• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    light emitting device, display unit, and lighting unit. a light emitting device includes: a light source; an optical component including a light incident surface facing the light source; and a wavelength converting member provided between the light source and the light incidence surface, the wavelength converting member crossing a first region r extending into a second region outside the first region, the first region being surrounded by the light-incidence surface and light paths of light emitted by the light source and entering the edges of the light-incidence surface.
    公开号:BR102013008257B1
    申请号:R102013008257-0
    申请日:2013-04-04
    公开日:2021-07-20
    发明作者:Tomoharu Nakamura；Kazue Shimizu；Gen Yonezawa；Shingo Ohkawa
    申请人:Sony Corporation；
    IPC主号:
    专利说明:

    FUNDAMENTALS
    [001] The present invention relates to a light emitting device favorable to a surface light source, a display unit and a lighting unit, each of which includes the light emitting device.
    [002] A surface emitting device that uses a blue light emitting diode (LED) is employed, for example, in a backlight of a liquid crystal display unit or in a lighting unit. For example, Japanese Patent 3,116,727 discloses how to obtain white light by providing a film to which a fluorescent material is applied to a light emitting observation surface of a light guide plate and converting, through the fluorescent material, a wavelength of light entering the light guide plate from a blue LED. Furthermore, for example, Japanese patent 3,114,805 discloses how to provide a wavelength converter, in which a fluorescent material is mixed with an elastic body, between a blue LED and an end face of a light guide plate. SUMMARY
    [003] In general, it is highly desired to increase color homogeneity in one plane in a light emitting device used as a surface light source.
    [004] It is desirable to provide a light emitting device capable of increasing the color homogeneity in a plane, and to provide a display unit and a lighting unit, each including the light emitting device.
    [005] According to an embodiment of the present invention, there is provided a light emitting device including: a light source; an optical component including a light incident surface facing the light source; and a wavelength converting member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the light incident surface and light paths of light emitted by the light source and entering the edges of the light incidence surface.
    [006] In the light emitting device according to the embodiment of the present invention, the light emitted by the light source is subjected to wavelength conversion in the wavelength converting member, enters the light-incidence surface of the component optical, passes through the interior of the optical component, and exits through the light-inciding surface. This is seen as light emission. Here, the wavelength converting member crosses the first region surrounded by the light-incidence surface and the light paths of light emitted by the light source and entering the edges of the light-incidence surface, and extends to the second region outside the first region. This reduces light that does not pass through the wavelength converting member of light emitted by the light source. In other words, this reduces light that is not subject to wavelength conversion in the wavelength converting member.
    [007] According to an embodiment of the present invention, there is provided a display unit with a liquid crystal display and a light emitting device on a rear face side of the liquid crystal display, the light emitting device including : a light source; an optical component including a light-inciding surface, the light-inciding surface facing the light source; and a wavelength converting member provided between the light source and the light incidence surface, the wavelength converting member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the light-incidence surface and light paths of light emitted by the light source and entering the edges of the light-incidence surface.
    [008] In the display unit according to the embodiment of the present invention, the light emitted by the light emitting device is selectively transmitted by the liquid crystal screen and an image is displayed thereby.
    [009] According to an embodiment of the present invention, there is provided a lighting unit with a light emitting device, the light emitting device including: a light source; an optical component including a light-inciding surface, the light-inciding surface facing the light source; and a wavelength converting member provided between the light source and the light incidence surface, the wavelength converting member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the light-incidence surface and light paths of light emitted by the light source and entering the edges of the light-incidence surface.
    [0010] In the lighting unit according to the embodiment of the present invention, lighting is carried out with light emitted by the light emitting device.
    [0011] According to the light emitting device of the embodiment of the present invention, the wavelength converting member crosses the first region surrounded by the light incident surface and the light paths of light entering the edges of the incident surface of light and extends to the second region outside the first region. Therefore, color homogeneity in a plane is increased. According to each of the display unit and lighting unit of the embodiments of the present invention, the light emitting device of the embodiment of the present invention is included. Therefore, high quality in display or lighting is achieved.
    [0012] It should be understood that both the general description and the detailed description below are exemplary, and are not intended to provide further explanation of the technology, as claimed. BRIEF DESCRIPTION OF THE DRAWINGS
    [0013] The accompanying drawings are included to provide a better understanding of the invention, and are incorporated into and form part of this report. The drawings illustrate embodiments and, together with the report, serve to explain the principles of the technology.
    [0014] FIG. 1 is a perspective view illustrating a general configuration of a light emitting device according to a first embodiment of the present invention.
    [0015] FIG. 2 is a cross-sectional view illustrating an arrangement between a light source, a light guide plate, and a wavelength converting member shown in FIG. 1.
    [0016] FIG. 3 is a perspective view illustrating light beams traveling from the light source shown in FIG. 2 toward a light-inciding surface of the light guide plate shown in FIG. two.
    [0017] FIG. 4 is a cross-sectional view illustrating a configuration of a light emitting device in accordance with a second embodiment of the present invention.
    [0018] FIG. 5 is a cross-sectional view to explain an example that does not include a light shielding member.
    [0019] FIG. 6 is a plan view schematically illustrating a light emitting state of the light emitting device shown in FIG. 5.
    [0020] FIG. 7 is a cross-sectional view illustrating an example of dimensions of the light emitting device shown in FIG. 5.
    [0021] FIG. 8 is a cross-sectional view illustrating a blue light-emitting portion of the light emitting device having the dimensions shown in FIG. 7.
    [0022] FIG. 9 is a cross-sectional view illustrating a modification of the light emitting device shown in FIG. 4.
    [0023] FIG. 10 is a cross-sectional view illustrating other modifications of the light emitting device shown in FIG. 4.
    [0024] FIG. 11 is a cross-sectional view illustrating another modification of the light emitting device shown in FIG. 4.
    [0025] FIG. 12 is a cross-sectional view illustrating another modification of the light-emitting device shown in FIG. 4.
    [0026] FIG. 13 is a perspective view illustrating an appearance of a display unit in accordance with a third embodiment of the present invention.
    [0027] FIG. 14 is an exploded speed illustrating a main body portion shown in FIG. 13.
    [0028] FIG. 15 is an exploded perspective view illustrating a screen module shown in FIG. 14.
    [0029] FIGS. 16A and 16B are perspective views illustrating an appearance of an application example 1 of the display unit.
    [0030] FIG. 7 is a perspective view illustrating an appearance of an application example 2.
    [0031] FIGS. 18A and 18B are perspective views illustrating an appearance of an example and application 3 viewed from the front and rear, respectively.
    [0032] FIG. 19 is a perspective view illustrating an appearance of an application example 4.
    [0033] FIG. 20 is a perspective view illustrating an appearance of an application example 5.
    [0034] FIGS. 21A and 21B are a front view and a side view of an application example 6 and an open state, respectively, and FIGS. 21C to 21G are a front view, a left side view, a right side view, a top view and a bottom view of application example 6 in a closed state, respectively.
    [0035] FIG. 22 is a perspective view illustrating an appearance of an application example 7 of a lighting unit.
    [0036] FIG. 23 is a perspective view illustrating an appearance of an application example 8 of a lighting unit.
    [0037] FIG. 24 is a perspective view illustrating an appearance of an application example 9 of the lighting unit. DETAILED DESCRIPTION
    [0038] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Description will be in the following order. 1. First Embodiment (light emitting device; an example in which a wavelength converting member crosses a region surrounded by the light incident surface and light paths of light emitted by the light source and entering the edges of the incident surface of light, and the wavelength converting member extending to a region outside this region). 2. Second Embodiment (light emitting device; an example in which a light shielding member is provided over a light path of light emitted by the light source passing through a container without passing through the wavelength converting member , and moves to a surface adjacent to the light-incidence surface of the light guide plate). 3. Third embodiment (display unit; liquid crystal display unit). 4. Application examples from 1 to 6 of Display Unit; 5. Application examples 7 to 9 of Lighting unit. (First mode of realization)
    [0039] FIG. 1 illustrates a general configuration of a light emitting device (light emitting device 1) according to a first embodiment of the present invention. The light emitting device 1 can be used, for example, as a backlight that illuminates a transmissive liquid crystal display from its rear, or as a lighting unit, for example, in a room. The light emitting device 1 includes a light source 10, a light guide plate 40, and an optical blade 50. The light guide plate 20 corresponds to a specific, but non-limiting example of an "optical component" of the present invention.
    [0040] In this report, a lamination direction of the optical blade 50, the light guide plate 20, and the reflection member 40 is referred to as the "Z (forward-rear direction)" direction, a lateral direction on a main surface (widest surface) of guide plate 20 is referred to as the “X direction”, and a vertical direction is referred to as the “Y direction”.
    [0041] The light source 10 is a point light source and configured by a light emitting diode (LED), specifically. Light source 10 can be enclosed in a unit 11 (not shown in FIG. 1, see FIG. 2), and can be mounted on a light source substrate 12, for example. The light source 10 may face a light incident surface 20A (e.g., left and right end faces) in FIG. 1) of the light guide plate 20, for example. The light source substrate 12 may have an elongated rectangular-parallelepiped shape and may be arranged in a line in a longitudinal direction thereof, for example.
    [0042] The light guide plate 20 guides light emitted by the light source 10 from the light-inciding surface 20A to a light-emitting surface 20B. The light guide plate 20 can be configured, for example, primarily from a transparent thermoplastic resin such as polycarbonate resin (PC) and an acrylic resin (such as polymethyl methacrylate (PMMA)). The light guide plate 20 can have, for example, a rectangular-parallelepiped shape configured by a pair of main surfaces (front and rear faces) facing each other in the front-rear direction (Z direction) and four end faces (faces sides) adjacent to it by its top, bottom, left and right.
    [0043] The left and right end faces of the light guide plate 20 are configured as light incidence surface 20A on which the light emitted by the light source 10 coincides, as described above. It should be noted that only one of the left and right end faces of the light guide plate 20 can be configured as the light incident surface 20A. Alternatively three of the end faces of the light guide plate 20 can be individually configured as the light-inciding surface 20A. Alternatively all four end faces can individually be configured as the light incident surface 20A.
    [0044] The front face and the rear face of the light guide plate 20 are configured as light-incidence surfaces 20B and 20D that emit incident light from the light-incidence surface 20A, respectively. The light-emitting surface 20B (front face) and the light-emitting surface 20D (rear face) of the light guide plate 20 individually have a flat shape corresponding to an object to be illuminated (such as a liquid crystal display 122 describes below) which is arranged on the side of the light emitting surface 20B of the light guide plate 20.
    [0045] The light-emitting surface 20B (front face) of the light guide plate 20 may have, for example, a concave-convex pattern formed from convex thin sections 20C to improve the straight direction of light propagating on the guide plate. light 20. The convex sections 20C may be, for example, protrusions or strip-shaped ridges extending in one direction (for example, in the lateral direction) of the light-emitting surface 20B. The light-emitting surface 20D (back face) of the light guide plate 20 can have, for example, a scattering agent printed thereon in a scattering section pattern that scatters light propagating on the light guide plate 20 to be uniform. It should be noted that a section including a filter may be provided, or the surface may be partially roughened to provide the spreading section, rather than providing the spreading agent.
    [0046] The wavelength converting member 30 converts a wavelength of light emitted by the light source 10. The wavelength converting member 30 is provided between the light source 10 and the light-inciding surface 20A of the guide plate of light 20. The wavelength converting member 30 may preferably include a fluorescent material, for example. Specifically, it is preferable that the light source 10 is a blue light source and the wavelength converting member 30 includes a fluorescent material that effects wavelength conversion on blue light from the light source 10 to allow blue light be converted to red or green light. Thereby, light of various colors is generated in the light emitting device 1 by synthesizing red and green light resulting from the wavelength conversion by the wavelength converting member 30.
    [0047] Furthermore, the wavelength converting member 30 may preferably include a quantum dot, for example. In other words, it is preferable that the light source 10 is a blue light source and the wavelength converting member 30 includes a quantum dot that effects wavelength conversion on blue light from the light source 10 to allow blue light to be converted to red or green light. The quantum dot has a discrete energy level and the light emission wavelength is freely selected by changing the size of the dot. The spectrum of red and green light obtained has a narrow half-band width and an abrupt peak. Therefore, chromatic purity of red and green light increases and color gamut is expanded compared to an existing light-emitting device that uses white LEDs and a fluorescent material.
    [0048] The reflection member 40 is a plate or blade-shaped member provided on the light-emitting surface side 20D (rear face) of the light guide plate 20. The reflection member 40 returns, to the light guide plate. light 20, the light emitted by the light source 10 and which has escaped towards the light-emitting surface 20D of the light guide plate 20 or light which has moved to the light-emitting surface 20D from the insert of the light guide plate 20.
    [0049] The reflection member 40 can be configured, for example, of foamed PET (polyethylene terephthalate), a deposited silver film, a multilayer reflection film, or white PET. When the reflection member 40 has a regular reflection function (mirror reflection), a surface of the reflection member 40 is preferably subjected to a process such as silver deposition, aluminum deposition, and multilayer reflection. When the reflection member 40 has a thin shape, the reflection member 40 can be integrally formed by a method such as hot press molding using a thermoplastic resin and melt extrusion molding. Alternatively, the reflection member 40 can be formed, for example, by applying an energy ray curable resin (such as ultraviolet ray) onto a base formed from a material such as PET and then transferring a shape to the energy curable resin from Ray. In this example, examples of the thermoplastic resin include a polycarbonate resin, a polyester resin such as polyethylene terephthalate, an amorphous resin and copolymerized polyester such as MS (methyl methacrylate and styrene copolymer), a polystyrene resin, and a chloride resin of polyvinyl. In addition, the base can be made of glass when a shape is transferred to an energy-ray curable resin (such as ultraviolet ray).
    [0050] The optical blade 50 is provided on the light-emitting surface 20B side (front face) of the light guide plate 20. The optical blade 50 may include, for example, a diffuser plate, a diffuser blade, a lenticular film , a polarization separation blade, etc. FIG. 1 illustrates only one of the optical blade 50 configured from the plurality of blades described above. Provision of such an optical blade 50 allows light emitted by the light guide plate 20 in an oblique direction to move upwards in a direction towards the front face. This further increases the frontal luminance.
    [0051] FIG. 2 illustrates an arrangement relationship between light source 10, light guide plate 20, and wavelength converting member 30 shown in FIG. 1, and illustrates a cross section including the light emitting center 10A of the light source 10 and being perpendicular to the light incident surface 20A. The light source 10 is arranged to face the light-inciding surface 20A of the light guide plate 20, and the wavelength converting member 30 is arranged between the light source 10 and the light-inciding surface 20A, as described above. . The reflection member 40 is laid on the side of the light-emitting surface 20D (rear face) of the light guide plate 20.
    [0052] The wavelength converting member 30 is preferably contained and sealed in a tube-shaped (capillary) container 31 made of a material such as glass. One reason is that this suppresses a change in the characteristics of the wavelength converting member 30 due to moisture, oxygen, etc. in air and allow the wavelength converting member 30 to be easily handled. It should be noted that the wavelength converting member 30, as described above, can be manufactured as follows, for example. A fluorescent material or quantum dot is mixed with an ultraviolet ray curable resin. The obtained mixture is placed in a container 31 configured, for example, of a glass tube, and one side of the container 31 is sealed. An ultraviolet ray is applied to cure the resin. Thereby, a gel wavelength converting member 30 with a certain level of viscosity is formed.
    [0053] The wavelength converting member 30 crosses a region S1 that is surrounded by the light incident surface 20A and light paths of emitted light v1 and light v2 that travels from the light source 10 and enters the edges (an upper edge 20E and a lower edge 20F) of the light-incidence surface 20A. The wavelength converting member 30 also extends to a region S2 outside the S1 region. In this way, color uniformity in one location is increased in light emitting device 1.
    [0054] The light source 10 and the wavelength converter member 30 shown in FIG. 2 can be held by a support (support) member 60, for example. Support member 60 can be configured, for example, with a highly reflective polycarbonate resin or a polyamide-based resin (such as “Genestar (trademark)” available from Kuraray Co. Ltd.). Support member 60 may include a first support portion 61 which supports the light source 10 and may include a second support portion 62 and a third support portion 63 which hold the wavelength converting member 30.
    [0055] The first support portion 61 is a portion to which the light source substrate 12 with light source 10 mounted thereon is coupled. The first support portion 61 faces the light-inciding surface 20A. The support portion 61 includes, in a central part thereof, an opening 61c which passes through an outer face 61A to an inner face 61B. The opening 61C includes, in a portion thereof closest to the outer face 61A, a seat portion 61D formed by recessing a circumference of the opening 61C in a strip shape. Thereby, the seat portion 61D supports the substrate of the light source 12, thus allowing the unit 11 provided with the light source 10 to be loosely fitted in the opening 61C. It should be noted that the seat portion 61D may not necessarily be provided, depending on the dimensions of the light source substrate 12. In addition, a portion of the entire inner face 61B is desirably sloped to increase efficiency of use of light emitted by the light source. 10.
    [0056] The second support portion 62 and the third support portion 63 form a sandwich with the upper and lower ends of the container 31, including the wavelength converting member 30 to support the container 31, so that for example , the position and orientation of the container 31 do not change. The second and third support portion 62 and 63 may extend from an upper end and a lower end of the first support portion 61 in a direction substantially perpendicular to the first support portion 61. Therefore, the first support portion 61, a second support portion 62 and third support portion 63 may have cross-sectional shapes that configure, for example, three sides of a FIG. rectangular. The upper and lower ends of the container 31 may, for example, be secured by protrusions (not shown) for support which are provided on the second support portion 62 and on the third support portion 63. It should be noted that the upper and lower ends and The bottom of the container 31 can be secured by other methods, such as by using an adhesive tape on both sides.
    [0057] Furthermore, a tip end of the second support portion 62 and a tip end of the third support portion 62 sandwich and hold one end of the light guide plate 20 and one end of the reflection member 40. It should be noted that it is sufficient that the second support portion 62 and the third support portion 63 sandwich at least the upper and lower ends of the container 31. The end of the light guide plate 20 and the end of the reflecting member 40 can be held by others members (described below).
    [0058] It should be noted that a non-illustrated heat dissipating member (heat sink) is coupled to the outer side of the above-described support member 60, in particular around the light source 10. In addition, the light-emitting device light 1 as a whole which includes such components as the light source 10, the light guide plate 20, the wavelength converting member 30, the reflection member 40, the optical blade 50, and the support member 60, and the heat-dissipating member (not shown) is contained in a chassis that is not shown (not shown in FIGS. 1 and 2, see a rear chassis 124 in FIG. 15, for example).
    [0059] In the light emitting device 1, the light emitted by the light source 10 is subjected to conversion in the wavelength converting member 30, enters the light-inciding surface 20A of the light guide plate 20, moves through the interior of the light guide plate 20, exits its light emitter 20B, and passes through the optical blade 50. This is observed as light emission. Here, light source 10 is a point light source as described above. Therefore, the light emitted by the light source 10 is scattered from the light emitting scepter 10A in all directions around 360°. There is no special problem with light scattering in the lateral direction, as long as the wavelength converting member 30 and the light-inciding surface 20 extend in the lateral direction, as shown in FIG. 3. On the other hand, some of the light scattered in the vertical direction may be deflected to a region above the upper edge 20E or it may be deflected to a region below the lower edge 20F.
    [0060] Here, the wavelength converting member 30 crosses the region S1 that is surrounded by the light incident surface 20A and the light paths of light v1 and light v2 emitted by light source 10 and entering the edges (a upper edge 20E and lower edge 20F) of the light incidence surface 20A. In other words, the wavelength converting member 30 crosses the S1 region in a direction parallel to the light-inciding surface 20A. Therefore, light passing through the inner side of the S1 region and entering the light-inciding surface 20A is subjected to wavelength conversion in the wavelength converting member 30.
    [0061] Furthermore, the wavelength converting member 30 extends into the S2 region outside the S1 region. In other words, the wavelength converting member 30 is provided to spread over and out of the S1 regions and to extend into the S2 region external thereto. Therefore, light emitted by the light source 10 and scattering in the vertical direction to travel outside the S1 region is captured by the wavelength converting member 30 to some degree and is subjected to wavelength conversion. Consequently, in the light emitting device 1, light which does not pass through the wavelength converting member 30 from light emitted by the light source 10, i.e. light which is not subject to wavelength conversion in the wavelength converting member. wave 30, is reduced. Therefore, color homogeneity in a plane is increased.
    [0062] As described above, in the present embodiment, the wavelength converting member 30 crosses the region S1 which is surrounded by the light incident surface 20A and the light paths of light v1 and v2 emitted by the light source 10 and entering the edges (the upper edge 20E and the lower edge 20F) of the light-inciding surface 20A. Additionally the wavelength converting member 30 extends into the S2 region outside the S1 region. This reduces light that does not pass through the wavelength converting member 30 from the light emitted by the light source 10, i.e. light that is not subject to wavelength conversion in the wavelength converting member 30. Thus color homogeneity in a plan is augmented. (Second mode of realization)
    [0063] FIG. 4 illustrates a cross-sectional configuration of a light emitting device 1A according to a second embodiment of the present invention. The light emitting device 1A includes a light shielding member 70 between the light-inciding surface 20A of the light guide plate 20 and the container 31 which includes the wavelength converting member 30. Thus, color homogeneity which occurs in the vicinity of the 20A light incidence surface is reduced and color homogeneity in one plane is further increased. Except for that, the light emitting device 1A has similar configuration, functions and effects as in the first embodiment. Therefore, the corresponding components are described with the same numbers.
    [0064] The light source 10, the unit 11, the light source substrate 12, the light guide plate 20, the wavelength converting member 30, the container 31, the reflection member 40, and the optical blade 50 individually have a configuration similar to the first embodiment.
    [0065] The support member 60 includes the first support portion 61 that supports the light source 10, and includes the second support portion 62 and the third support portion 63 that support the wavelength converting member 30, as in first embodiment.
    [0066] The support portion 61 includes, in a central part thereof, the opening 61C that crosses from the outer face 61A to the inner face 61B. In the present embodiment, the seat portion 61D on the side of the outer face 61A of the opening 61C is not provided. The light source substrate 12 is attached to the outer face 61A and thus the unit 11 with the light source 10 mounted thereon is loosely fitted in the opening 61C.
    [0067] The second support portion 62 holds, with the third support portion 63, the upper end of the container 31, including the wavelength converting member 30. It should be noted that FIG. 4 illustrates a case in which the optical blade 50 is arranged on the light-emitting surface 20B of the light guide plate 20, and one end of the optical blade 50 is secured by the second support portion 62, but by a frame-like member 80 ( see FIG. 15). The frame-like member 80 is a frame-like resin component that supports the optical blade 50, which is called the intermediate chassis.
    [0068] The third support portion 63, together with the second support portion, supports the lower end of the container 31, including the wavelength converter member 30. The tip end of the third support portion 63 extends over the rear side of the light-emitting surface 20D (rear face) of the light guide plate 20 and the reflection member 40.
    [0069] The light shielding member 70 is provided over a luminous path of light v3 emitted by the light source 10, passing through the container 31 without passing through the wavelength converting member 30, and moving to a surface adjacent to the surface incident light 20A of the light guide plate 20, i.e. to the light-emitting surface 20B or the light-emitting surface 20D.
    [0070] In other words, when the light shielding member 70 is not provided, the light v3 passes through a space close to the support member 60, the frame-like member 80 etc., to enter the optical blade 50, and can be emitted directly out as shown in FIG. 5. In this case, the v3 light is not subjected to wavelength conversion in the wavelength converting member 30. Furthermore, the v3 light is not mixed, in the light guide plate 20, with green or red light resulting from the wavelength conversion. Therefore, the v3 light is emitted as blue light in an unaltered state from the moment the v3 light is emitted from the light source 10. Consequently, the blue color B homogeneity caused by the v3 light is observed along the right sides and left in which the light source 10 is provided, when the light emitting device 1 is viewed from the front side of the optical blade 50, as schematically shown in FIG. 6.
    [0071] The v3 light causing the above-described homogeneity B is emitted from a portion 31A of the container 31. When specific values refer to the relationship of dimensions and location between the light source 10, the light guide plate 20, and the converting member of wavelength 30 are given, portion 31A is specified based on the specific values given. For example, as shown in FIG. 7, a dimension t1 from the upper end to the lower end of the container 31 may be 4mm, a thickness t2 of the light guide plate 20 may be 3.5mm, and a maximum thickness t3 of the wavelength converting member 30 may be 2.7mm. For example, a distance L1 between the light emitting center 10A of the light source 10 and the light incident surface 20A can be 0.6mm, a thickness L2 of the container 31 in the lateral direction can be 2mm, and a distance L3 between container 31 and light-incidence surface 20A can be 1.4mm. For example, a thickness (difference between the outer diameter and an inner diameter) R of the container 31 may be 1mm, and a refractive index N of the container 31 may be 1.51.
    [0072] In this case, the portion 31A of which the v3 light causing the color homogeneity B is limited in a band that has a distance L between 1.95mm and 2.16mm, both inclusive of the light emitting center 10A of the source luminous 10 in the lateral direction, and which has a distance t between 1.3mm and 1.94mm, both inclusive in a height direction, as shown in FIG. 8. Therefore, the light shielding member 70 is provided based on the calculation described above to shield the light v3 and suppress color homogeneity B. It should be noted that the portion 31A from which the v3 light causing the color homogeneity B is emitted is illustrated with a line thicker than an outline of the container 31 in FIG. 8.
    [0073] In particular, the light shield member 70 is preferably a light shield protrusion 71 provided on each second support portion 62 and third support portion 63 of the support member 60, as shown in FIG. 4. In this way, the v3 light is shielded in a position extremely close to the portion from which the v3 light causing the B homogeneity of color is emitted. This surely suppresses the occurrence of color homogeneity B. Additionally, this allows for the easy formation of the light shield member 70 in a manufacturing process of the support member 60 which is configured from a resin component.
    [0074] Alternatively, it is also preferable that the light shielding member 70 is a light shielding protrusion 72 provided on the frame-like member 80 as shown in a light emitting device B1 in FIG. 9. This allows for the easy formation of the light shield member 70 in a manufacturing process of the frame-like member 80 which is configured from a resin component.
    [0075] Alternatively, it is also preferable that the light shielding member 70 is a light shielding pad 73 covering an end of a surface adjacent to the light-inciding surface 20A of the light guide plate 20, in particular, which covers one end of the light-emitting surface 20B, as shown in a light-emitting device 71 or 72 shown in FIG. 4 or 9, it is possible to suppress light reflection due to the light shielding protrusion 71 or 72. Thereby, it is possible to further increase the use and light efficiency. Furthermore, the light shielding pad 73 is preferably sandwiched between the frame-like member 80 and the light-emitting surface 20B of the light guide plate 20. This allows to adjust the mechanical clearance between the frame-like member 80 and the light guide plate 20, or allows to reduce sounds caused when the frame-like member 80 touches the light guide plate 20 made of a different material than the frame-like member 80. It may be preferable to use, for example, urethane foam ("PORON" (trademark)” available from Rogers Inoac Corporation) as a material that configures the light shield pad 73.
    [0076] Additionally it is more preferable that the optical blade 50 is provided on the opposite side of the frame-like member 80 of the light shielding pad 73 (above the frame-like member 80, i.e. in front (closer to the observation surface) emitting device)) as shown in a light emitting device 1d in FIG. 11. One reason is that this allows a width of the light-shielding pad 73 to be wider than that of FIG. 10, thus allowing easy coupling of the shield pad to the light 73.
    [0077] Furthermore, it is also preferable to provide a lower pad 74 on the side of the light-emitting surface 20D (rear face) of the light guide plate 20, specifically between the reflecting member 40 and the third support portion 63 of the member. bracket 60 as shown in a light emitting device 1E in FIG. 12. This shields the light emitted by the light source 10, passes through the container without passing through the wavelength converting member 30, and moves to a surface adjacent to the light-inciding surface 20A of the light guide plate 20, or that is, for the 20D light-emitting surface. This suppresses color inhomogeneity caused by this light. Furthermore, the lower pad 74 not only has the light shielding function, but also functions as a clearance adjustment and abnormal noise prevention like the light shield pad 73 described above. For example, polyethylene foam (“SUPER OPCELL (trademark)” available from Sanwa Kako Co, Ltd.) may be preferable to an optical path material that configures the lower pad 74.
    [0078] Additionally it is preferable that one end 41 of the reflection member 40 extends over and out of the light guide plate 20, towards the light source 10, as shown in FIGS. 4, 9 to 12. This shields light emitted by light source 10, passes through container 31 without passing through wavelength converting member 30, and moves to a surface adjacent to the light-inciding surface 20A of the guide plate. of light 20, that is, for the light-emitting surface 20D. In this way, color inhomogeneity caused by light is suppressed. Furthermore, an even greater effect is obtained when the light shielding protrusion 71 of the third support portion 63 shown in FIG. 4 is used together or when the lower pad 74 shown in FIG. 12 is used together.
    [0079] In each of the light emitting devices 1A to 1E, as in the first embodiment, the light emitted by the light source 10 is subjected to the wavelength converter in the wavelength converting member 30, enters the incident surface of light 20A of the light guide plate 20, travels through the interior of the light guide plate 20, exits the light emitting surface 20B, and passes through the optical blade 50. This is observed as light emission.
    [0080] At this time, the light v3 emitted by the light source 10 passes through the container 31 without passing through the wavelength converting member 30, and moves to the surface (the light-emitting surface 20B or the light-emitting surface 20D ) adjacent to the light incidence surface 20A of the light guide plate 20 is generated. The light v3 can pass through the space near the support member 60, the frame-like member 80 etc., pass through the optical blade 50, and can be emitted directly to the outside. This v3 light can cause blue color B inhomogeneity as shown in FIG. 6. In the present embodiments, the light shielding member 70 is provided over the light path of light v3. Therefore, the v3 light causing color inhomogeneity B is shielded by the light shielding member 70. Consequently, color homogeneity in one plane is further increased.
    [0081] It should be noted that there is a v4 light emitted by the light source 10, which passes through the container 31 without passing through the wavelength converting member 30, traverses the space near the support member 60, the frame-like member 80 etc. ., and enters the light-inciding surface 20A of the light guide plate 20, as shown in FIGS. 4 and 9 to 12. However, the v4 light is mixed, in the light guide plate 20, with light that has been subjected to wavelength conversion. Therefore, v4 light is less likely to cause a significant problem, such as color B inhomogeneity caused by v3 light. Furthermore, when the v3 light enters the light-emitting surface 20B or 20D of the light guide plate 20, the v3 light is mixed, in the light guide plate 20, with light that has been subjected to wavelength conversion. In this way, the problem of color inhomogeneity B is moderated.
    [0082] As described above, in the present embodiments, the light shielding member 70 is provided over the light path of light v3 which is emitted by the light source 10, passes through the container 312 without passing through the length converting member. wave 30, and moves to the surface adjacent to the light-inciding surface 20a of the light guide plate 20, i.e. to the light-emitting surface 20B or the light-emitting surface 20D. Therefore, the v3 light that tail B color inhomogeneity is shielded. Consequently, color homogeneity in a plane is further increased. (Third mode of realization)
    [0083] FIG. 13 illustrates an appearance of a display unit 101 according to a third embodiment of the present invention. The display unit 101 can be used, for example, as a flat screen television unit. The display unit 101 has a configuration in which a pedestal 103 supports a flat plate-like main body section 102 for image display. The display 101 is used as a standing display unit that is placed on a horizontal surface, such as a floor, bookcase and a rack, in a state in which the pedestal 103 is attached to the section 102 of the main body. . However, it should be noted that the display unit 101 can be used as a display unit attached to the wall in a state in which the pedestal 103 is removed from the main body section 102.
    [0084] FIG. 14 illustrates an exploded view of the main body section 102 shown in FIG. 13. This section 102 may include, for example, a front outer member (bevel) 111, a panel module 112, and a rear outer member (back cover) 113, in this order of proximity to a front face (relative to a observer). The outer front member 111 is a picture frame-like member that covers the front circumference of the panel module 112. A pair of speakers 114 is arranged in a lower portion of the outer front member 111. The panel module 112 is fixed to the front outer member 111. An electrical power source substrate 115 and a signal substrate 116 are mounted on a rear face of the panel module 112 and a coupling bracket 117 is secured thereto. This bracket 117 is for coupling a bracket attached to the wall, for coupling components as a substrate, and for coupling the pedestal 103. The outer rear member 113 covers the rear face and side faces of the panel module 112.
    [0085] FIG. 15 illustrates an exploded view of the panel module 112 shown in FIG. 13. The panel module 112 may include, for example, a front housing (top chassis) 121, a liquid crystal display 122, the frame-like member (middle chassis) 80, the optical blade 50, the light guide plate 20, the reflection member 40, a rear housing (rear chassis) 124, a balancer substrate 125, a balancer cover 126, and a timer substrate 127, in this order of proximity to the front face (facing the viewer).
    [0086] The front housing 121 is a frame-like metallic component that covers the front circumference of the liquid crystal display 122. The liquid crystal display 122 may include, for example, a liquid crystal cell 122A, a font substrate 122B, and a flexible substrate 122C, such as a COF (chip on film) that connects the liquid crystal cell 122A and the source substrate 122B. The frame-like member 80 is a frame-shaped resin component that supports the liquid crystal display 122 and the optical blade 50. The rear housing 124 is a component made of metal such as iron (Fe) and contains the crystal display. liquid 122, frame-like member 80, and light emitting device 1. Balancing substrate 135 controls light emitting device 1. Balancing substrate 125 is mounted on the rear face of rear housing 124 and is covered with the housing cover. balancer 126 as shown in FIG. 15. Timer substrate 127 is also mounted on the rear face of rear housing 124.
    [0087] In the display unit 101, light emitted by the light emitting device 1 is selectively transmitted by the liquid crystal screen 122, and an image is displayed thereby. In the present example, the display unit 101 includes the light emitting device having increased color homogeneity in one plane, as described in the first embodiment. Therefore, the display quality of the display unit 101 is improved.
    [0088] It should be noted that although a case in which the display unit 101 includes the light emitting device 1 according to the first embodiment is described above in the third embodiment, we can say that the display unit 101 may include any of the light emitting devices 1A to 1E according to the second embodiment, instead of the light emitting device q according to the first embodiment. (Examples of display unit application)
    [0089] Examples in which the above-described display unit 101 is applied to electronic apparatus will be described below. Examples of electronic devices include televisions, digital cameras, notebooks, personal digital assistants such as mobile phones and video cameras. In other words, the above-described display unit is applicable to an electronic apparatus in any field that uses an externally or internally generated image signal to display or a cinema film. (Example of application 1)
    [0090] FIGS. 16A and 16B illustrate an appearance of an electronic book to which the display unit 101 of the above-described embodiment is applied. The electronic book may include, for example, a display section 210 and a non-display section 220. The display section 210 is configured by the display unit 101 of the above-described embodiment. (Example of application 2)
    [0091] FIG. 17 illustrates an appearance of a smartphone to which the display unit 101 of the above-described embodiment is applied. The smartphone may include, for example, a display section 230 and a non-display section 240. The display section 230 is configured by the display unit 101 of the above-described embodiment. (Example of application 3)
    [0092] FIG. 18 illustrates an appearance of a digital camera to which the display unit 101 of the above-described embodiment is applied. The digital camera may include, for example, a light-emitting section 410 for a flash, a display section 420, and a menu switch 430, and a shutter button 440. The display section 420 is configured by the display unit 101 of the above-described embodiment. (Example of application 4)
    [0093] FIG. 19 illustrates an appearance of a notebook to which the display unit 101 of the above-described embodiment is applied. The notebook may include, for example, a main body 510, a keyboard 520 for character input command operations, etc., and a display section 530 that displays an image. The display section 530 is configured by the display unit 101 of the above-described embodiment. (Example application 5)
    [0094] FIG. 20 illustrates an appearance of a video camera to which the display unit 101 of the above-described embodiment is applied. The video camera may include, for example, a main body section 610, a lens 620 for photographing an object provided on a front side face of the main body section 610, a start/stop switch 630 used in photography, and a display section 640. The display section 640 is configured by the display unit 101 of the above-described embodiment. (Example of application 6)
    [0095] FIGS. 21A to 21G illustrate an appearance of a mobile phone to which a display unit 101 of the above-described embodiment is applied. The mobile phone can be configured, for example, of a top housing 710 and a bottom housing 720 connected by a connecting section (hinge section) 730. The mobile phone may include, for example, a screen 740, a sub-screen 750, a scene light 760, and a camera 770. One or both of the screen 640 and the sub-screen 750 are each configured by the display unit 101 of the above-described embodiment. (Example of application of the lighting unit)
    [0096] FIGS. 22 and 23 illustrate an appearance of a table lighting unit to which any of the light emitting devices 1 and 1A to 1E of the above-described embodiment is applied. The lighting unit may include, for example, a pole 842 provided on a base 841 and a lighting section 843 coupled to the pole 842. The lighting section 843 is configured by any of the light emitting devices 1 and 1A to 1E accordingly with the first and second embodiments described above. Section and lighting 843 can have any shape. like the laminate shown in FIG. 22 and a curved face shape shown in FIG. 23 by allowing the light guide plate 20 to have a curved shape.
    [0097] FIG. 24 illustrates an appearance of an ambient lighting unit to which any of the light emitting devices 1 and 1A to 1E of the above-described embodiment is applied. The lighting unit may include, for example, a lighting section 844 which is configured by any of the light emitting devices 1 and 1A to 1E in accordance with the above-described embodiments. Illumination sections 844 are arranged at the appropriate number in an apparatus range on a building seal 850A. It should be noted that the lighting section 844 is not limitedly provided over the seal 850A and can be provided anywhere, such as a wall 850B and on a floor (not shown), according to the application.
    [0098] The lighting unit effects lighting using light emitted by the light emitting device 1. In the present example, the lighting unit includes the light emitting device 1 with improved color homogeneity in one plane, as described in the first mode of achievement. Therefore, the lighting quality is improved.
    [0099] Above, the present invention has been described with reference to preferred embodiments. However, the present invention is not limited to the above-described embodiments and can be modified in various ways. For example, material, thickness, etc. of each layer described above in the embodiments are not limiting and other materials, other thicknesses etc. can be used.
    [00100] Furthermore, for example, although a case in which the light source 10 is an LED has been described above in the embodiments, the light source 10 can be configured by a component such as a semiconductor laser.
    [00101] Furthermore, for example, the configurations of the light emitting devices 1 and 1A to 1E and the display unit 101 (television unit) have been described above in the embodiments. However, it is not necessary to include all components and other components can still be included.
    [00102] Furthermore, a case where the wavelength converting member 30 which has been sealed in the container 31 has been described above in the modalities. However, the wavelength converting member 30 can be a blade-like member in which a fluorescent material or quantum dot is dispersed in a resin blade.
    [00103] In addition, the edge light type light emitting device 1 in which the light emitted by the light source 10 is guided to the light incidence surface 20A which is the end face of the light guide plate 20 and is emitted by the The light-emitting surface 20B towards the front face has been described above in the embodiment. However, the present invention is also applicable to a direct type light emitting device, in which the light source 10 is arranged in a plane and a diffuser is arranged as an optical component above the light source 10.
    [00104] It is possible to obtain at least the following configurations of the above-described exemplary embodiments and the modifications of the invention. 1. ) A light-emitting device including: a light source; an optical component including a light incident surface facing the light source; and a wavelength converting member provided between the light source and the light incidence surface, the wavelength converting member crossing a first region r extending into a second region outside the first region, the first region being surrounded by the light-incidence surface and light paths of light emitted by the light source and entering the edges of the light-incidence surface. 2.) Light emitting device according to (1), further including a container containing the wavelength converting member. 3.) The light emitting device according to (2), further including a light shielding member provided over a light path of light emitted by the light source, passes through the container without passing through the wavelength converting member, and moves to a surface adjacent to the light-inciding surface of the optical component. 4.) The light-emitting device according to (3), wherein the light-shielding member is a light-shielding pad covering one end of the surface adjacent to the light-inciding surface of the optical component. 5.) The light emitting device according to (4), further including: an optical blade provided on the surface adjacent to the light-inciding surface of the optical component; and a frame-like member supporting the optical blade, wherein: the light-shielding pad is sandwiched between the frame-like member and the optical component. 6.) The light emitting device according to (5), wherein the optical blade is provided on an opposite side of the frame-like member of the shield pad. 7.) The light emitting device according to (3), further including: a support member supporting the container, wherein the light shielding member is a light shielding protrusion which is provided on the supporting member. 8.) The light-emitting device according to (3), further including: an optical blade provided on the surface adjacent to the light-inciding surface of the optical component; and a frame-like member supporting the optical blade, where the light shielding member is a shielding protrusion provided over the frame-like member. 9. ) The light-emitting device according to any one of (1) to (8), where the light source is a point light source. 10.) The light emitting device according to any one of (1) to (9), wherein the wavelength converting member includes a fluorescent material. 11.) The light emitting device according to (1), wherein the wavelength converting member includes a quantum dot. 12. ) The light emitting device according to any one of (1) to (11), where the light source is a blue light source. 13. ) The light emitting device according to (12), where the light source is configured as a light emitting diode. 14. ) Electrical device according to any one of (1) to (13), where the optical component is a light guide plate, and the light-inciding surface is an end face of the light guide plate. 15.) A display unit with a liquid crystal display and a light emitting device on a rear face side of the liquid crystal display, the light emitting device including: a light source; an optical component including a light incident surface facing the light source; and a wavelength converting member provided between the light source and the light incidence surface, the wavelength converting member crossing a first region r extending into a second region outside the first region, the first region being surrounded by the light-incidence surface and light paths of light emitted by the light source and entering the edges of the light-incidence surface. 16. ) A lighting unit with a light emitting device, the light emitting device including: a light source; an optical component including a light incident surface facing the light source; and a wavelength converting member provided between the light source and the light incidence surface, the wavelength converting member crossing a first region r extending into a second region outside the first region, the first region being surrounded by the light-incidence surface and light paths of light emitted by the light source and entering the edges of the light-incidence surface.
    [00105] The present application contains subject matter related to that disclosed in Japanese Patent Priority Application JP 2012-90,213, filed with the Japan Patent Office on April 11, 2012, the entire contents of which are incorporated herein by reference.
    [00106] It should be understood by one experienced in the art that various modifications, combinations, sub-combinations and alterations may occur depending on design requirements and other factors while falling within the scope of the appended claims or their equivalents.
    权利要求:
    Claims (38)
    [0001]
    1. Light-emitting device, characterized by the fact that it comprises: a light source; an optical component including a light-inciding surface, the light-inciding surface facing the light source; and a wavelength converting member for converting a wavelength of at least a portion of light emitted from the light source from a first wavelength to a second wavelength that is different from the first wavelength; wavelength being provided between the light source and the light incidence surface, the wavelength converting member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the incidence surface of light and light paths of light that is emitted by the light source and enters the edges of the light incident surface, the light source is a blue light source, and the wavelength converting member is configured to convert the hair wavelength minus the portion of the blue light emitted from the blue light source of the first wavelength that corresponds to the blue light for the second wavelength that and corresponds to red light or green light so as to convert blue light into red light or green light.
    [0002]
    2. A light-emitting device according to claim 1, further characterized in that it comprises: a container containing the wavelength converting member.
    [0003]
    3. A light-emitting device according to claim 2, further characterized in that it comprises: a light shielding member provided on a light path of light that is emitted by the light source, passes through the container without passing through the converting member wavelength, and moves to a surface adjacent to the light-inciding surface of the optical component.
    [0004]
    4. A light-emitting device according to claim 3, characterized in that the light-shielding member is a light-shielding pad covering one end of the surface adjacent to the light-inciding surface of the optical component.
    [0005]
    5. A light-emitting device according to claim 4, further characterized in that it comprises: an optical blade provided on the surface adjacent to the light-incidence surface of the optical component; and a frame-like member supporting the optical blade, wherein the light-shielding pad is sandwiched between the frame-like member and the optical component.
    [0006]
    6. A light-emitting device comprising: a light source; an optical component including a light-inciding surface, the light-inciding surface facing the light source; and a wavelength converting member provided between the light source and the light incidence surface, the wavelength converting member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the light-incidence surface and light paths of light that is emitted by the light source and enters the edges of the light-incidence surface; a container containing the wavelength converting member; and a light shield member provided over a luminous path of light that is emitted by the light source, passes through the container without passing through the wavelength converting member, and moves to a surface adjacent to the light-inciding surface of the optical component, wherein the light-shielding member is a light-shielding pad covering one end of the surface adjacent to the light-inciding surface of the optical component, characterized in that it further comprises: an optical blade provided on the surface adjacent to the light incidence surface of the optical component; and a frame-like member supporting the optical blade, wherein the light-shielding pad is sandwiched between the frame-like member and the optical component, and wherein the optical blade is provided on an opposite side of the frame-like member of the shielding pad. .
    [0007]
    7. A light-emitting device comprising: a light source; an optical component including a light-inciding surface, the light-inciding surface facing the light source; and a wavelength converting member provided between the light source and the light incidence surface, the wavelength converting member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the light-incidence surface and light paths of light that is emitted by the light source and enters the edges of the light-incidence surface; a container containing the wavelength converting member; a light shield member provided over a luminous path of light that is emitted by the light source, passes through the container without passing through the wavelength converting member, and moves to a surface adjacent to the light-inciding surface of the component optical; and a support member supporting the container, further characterized in that: the light-shielding member is a light-shielding protrusion which is provided on the support member.
    [0008]
    8. A light-emitting device according to claim 3, further characterized in that it comprises: an optical blade provided on the surface adjacent to the light-incidence surface of the optical component; and a frame-like member supporting the optical blade, where the light shielding member is a shielding protrusion provided over the frame-like member.
    [0009]
    9. Light emitting device according to claim 1, characterized in that the light source is a point light source.
    [0010]
    10. A light emitting device according to claim 1, characterized in that the wavelength converting member includes a fluorescent material.
    [0011]
    11. Light emitting device according to claim 1, characterized in that the wavelength converting member includes a quantum dot.
    [0012]
    12. Light emitting device according to claim 1, characterized in that the light source is configured with a light emitting diode.
    [0013]
    13. Electrical device according to claim 1, characterized in that: the optical component is a light guide plate, and the light incidence surface is an end face of the light guide plate.
    [0014]
    14. Display unit, characterized in that it is with a liquid crystal display and a light emitting device on a rear face side of the liquid crystal display, the light emitting device comprising: a light source; an optical component including a light-inciding surface, the light-inciding surface facing the light source; and a wavelength converting member for converting a wavelength of at least a portion of light emitted from the light source from a first wavelength to a second wavelength that is different from the first wavelength; wavelength being provided between the light source and the light incidence surface, the wavelength converting member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the incidence surface of light and light paths of light that is emitted by the light source and enters the edges of the light incident surface, the light source is a blue light source, and the wavelength converting member is configured to convert the hair wavelength minus the portion of the blue light emitted from the blue light source of the first wavelength that corresponds to the blue light for the second wavelength that and corresponds to red light or green light so as to convert blue light into red light or green light.
    [0015]
    15. Lighting unit, characterized in that it is with a light emitting device, the light emitting device comprising: a light source; an optical component including a light-inciding surface, the light-inciding surface facing the light source; and a wavelength converting member for converting a wavelength of at least a portion of light emitted from the light source from a first wavelength to a second wavelength that is different from the first wavelength; wavelength being provided between the light source and the light incidence surface, the wavelength converting member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the incidence surface of light and light paths of light that is emitted by the light source and enters the edges of the light incident surface, the light source is a blue light source, and the wavelength converting member is configured to convert the hair wavelength minus the portion of the blue light emitted from the blue light source of the first wavelength that corresponds to the blue light for the second wavelength that and corresponds to red light or green light so as to convert blue light into red light or green light.
    [0016]
    16. Light-emitting device, characterized by the fact that it comprises: a plurality of light sources; an optical component including a light-inciding surface, the light-inciding surface facing the plurality of light sources; and a wavelength converting member for converting a wavelength of at least a portion of light emitted from at least one light source of the light sources of a first wavelength to a second wavelength that is different from the first wavelength. wave, the wavelength converting member being provided between the at least one light source and the light-inciding surface, the wavelength converting member crossing a first region and extending to a second region outside the first region, the the first region being surrounded by the light-incidence surface and light paths of light that is emitted by the at least one light source and enters the edges of the light-incidence surface, the at least one light source is a first light source, and the member wavelength converter is configured to convert the wavelength of at least the portion of first light emitted from the first light source of the first wavelength that corresponds to the first light to the second wavelength that corresponds to the second light or third light, so as to convert the first light into the second light or the third light.
    [0017]
    17. A light-emitting device according to claim 16, further characterized in that it comprises: a container containing the wavelength converting member.
    [0018]
    18. A light-emitting device according to claim 17, further characterized in that it comprises: a light shielding member provided over a light path of light which is emitted by a first light source of the plurality of light sources, passes through the container without passing through the wavelength converting member, and moves to one end of a light-emitting surface of the optical component.
    [0019]
    19. A light-emitting device according to claim 18, characterized in that the light-shielding member is a light-shielding pad covering the end of the light-emitting surface of the optical component.
    [0020]
    20. A light-emitting device according to claim 19, further characterized in that it comprises: an optical blade provided on the light-emitting surface of the optical component; and a frame-like member supporting the optical blade, wherein the light-shielding pad is sandwiched between the frame-like member and the optical component.
    [0021]
    21. A light-emitting device according to claim 19, further characterized in that it comprises: a reflection member provided on the light-emitting surface of the optical component; and a frame-like member supporting the wavelength converting member and extending over the light-emitting surface of the optical component, wherein the light-shielding pad is sandwiched between the frame-like member and the reflecting member.
    [0022]
    22. Light emitting device according to claim 16, characterized in that the light source is a point light source.
    [0023]
    23. A light emitting device according to claim 16, characterized in that the wavelength converting member includes a fluorescent material.
    [0024]
    24. A light emitting device according to claim 16, characterized in that the wavelength converting member includes at least one quantum dot.
    [0025]
    25. A light emitting device according to claim 24, characterized in that the wavelength converting member includes a quantum dot for each of the light sources.
    [0026]
    26. Light emitting device according to claim 16, characterized in that the at least one light source is configured with a light emitting diode.
    [0027]
    27. A light emitting device according to claim 16, characterized in that: the optical component is a light guide plate, and the light incidence surface is an end face of the light guide plate.
    [0028]
    28. A light emitting device according to claim 16, characterized in that the wavelength converting member includes a blade in which a quantum dot is dispersed.
    [0029]
    29. A light emitting device according to claim 16, characterized in that the wavelength converting member includes a blade in which a fluorescent material is dispersed.
    [0030]
    30. Light emitting device according to claim 16, characterized in that the device is a direct type light emitting device.
    [0031]
    31. Light emitting device according to claim 16, characterized in that the device is a light emitting device of the edge light type.
    [0032]
    32. A light emitting device according to claim 16, characterized in that the at least one light source is a laser light source.
    [0033]
    33. A light-emitting device according to claim 16, further characterized in that it comprises: a reflection member provided on a light-emitting surface of the optical component, wherein one end of the reflection member extends over and away from the light-incidence surface of the optical component for the plurality of light sources.
    [0034]
    34. Light-emitting device, characterized by the fact that it comprises: a plurality of light sources; an optical component including a light-inciding surface, the light-inciding surface facing the plurality of light sources; and a wavelength converting member including a quantum dot material for converting a wavelength of at least a portion of light emitted from at least one light source from light sources of a first wavelength to a second wavelength. which is different from the first wavelength, the wavelength converting member being provided between the at least one light source and the light incidence surface, the wavelength converting member crossing a first region and extending into a second region outside the first region, the first region being surrounded by the light incidence surface and light paths that are emitted by the at least one light source and enter the edges of the light incidence surface, the at least one light source is a first light source, and the wavelength converting member is configured to convert the wavelength of at least the first portion. uz emitted from the first light source of the first wavelength corresponding to the first light to the second wavelength corresponding to the second light or third light, so as to convert the first light into the second light or the third light.
    [0035]
    35. Light emitting device according to claim 34, characterized in that the device is a direct type light emitting device.
    [0036]
    36. Light emitting device according to any one of claims 34 or 35, characterized in that the device is an edge light type light emitting device.
    [0037]
    37. A light-emitting device according to any one of claims 34 to 36, further characterized in that it comprises: a reflection member provided on a light-emitting surface of the optical component, wherein one end of the reflection member extends over and away from the light-inciding surface of the optical component to the plurality of light sources.
    [0038]
    A light emitting device according to any one of claims 34 to 37, characterized in that it comprises a diffuser over the light emitting device.
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    同族专利:
    公开号 | 公开日
    EP3012686A1|2016-04-27|
    CN110082953A|2019-08-02|
    PL3012686T3|2019-04-30|
    BR102013008257A2|2016-01-19|
    TR201901273T4|2019-02-21|
    US9110204B2|2015-08-18|
    JP2013218953A|2013-10-24|
    US20150323726A1|2015-11-12|
    EP2650720B1|2015-12-16|
    EP3012686B1|2018-12-05|
    EP2650720A1|2013-10-16|
    US20130271700A1|2013-10-17|
    IN2013MU00276A|2015-07-10|
    CN103376596A|2013-10-30|
    ES2708824T3|2019-04-11|
    US9239418B2|2016-01-19|
    JP6092522B2|2017-03-08|
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    法律状态:
    2016-01-19| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-02-27| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-20| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 04/04/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2012090213A|JP6092522B2|2012-04-11|2012-04-11|LIGHT EMITTING DEVICE, DISPLAY DEVICE, AND LIGHTING DEVICE|
    JP2012090213|2012-04-11|
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