• 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:
    The present invention relates to a light-emitting device (100, 100A, 100B) in which the voltage built up between the light-emitting element (30) and the substrate (10) can be reduced. The light emitting device (100, 100A, 100B) includes a substrate (10) extending in a first direction (D1), a sealing resin member (20), and a light emitting element (30). The substrate (10) includes a flexible base (11), a plurality of spinning portions (12), and a slot portion (14, 14A, 14B) disposed between the plurality of spinning portions (12). The sealing resin member (20) seals a portion of the substrate (10) and the light-emitting element (30). The sealing resin member (20) is separated from the first groove portion (141) which is a part of the groove portion (14, 14A, 14B) and extends in a second direction (D2) that crosses the first direction (D1 ).
    公开号:BR102013017491B1
    申请号:R102013017491-2
    申请日:2013-07-08
    公开日:2021-05-18
    发明作者:Motokazu Yamada；Tadaaki Miyata；Naoki Mori
    申请人:Nichia Corporation；
    IPC主号:
    专利说明:

    CROSS REFERENCE TO RELATED ORDERS
    This application claims as priority Japanese Patent Application No. 2012-153421, filed July 9, 2012. The entire disclosure of Japanese Patent Application No. 2012-153421 is incorporated herein by reference. BACKGROUND OF THE INVENTION 1. Field of Invention
    The present invention relates to a light emitting device including a flexible substrate and a light emitting element. 2. Description of Related Art
    A light-emitting device has been proposed which includes a light-emitting element disposed on a flexible substrate, and a sealing member which seals the light-emitting element (see, for example, Patent Literature 1: JP 2005-322937 A). The light emitting device described in Patent Literature 1: JP 2005-322937 A can be rolled up during the production and transportation process, and can also be cut to a desired size for use.
    However, in the light emitting device described in JP 2005322937 A, there is a problem in that when the light emitting device is rolled up, stress concentrations tend to occur between the sealing member which seals the light emitting element and the substrate. SUMMARY OF THE INVENTION
    The present invention is devised in light of such circumstances, and it is therefore an object of the present invention to provide a light-emitting device in which the tension that occurs between the enclosing member sealing the light-emitting element and the substrate can be reduced.
    The light emitting device according to the present invention includes a substrate, at least one light emitting element, and at least one sealing resin member. The substrate includes a flexible base extending in a first direction that is a longitudinal direction of the substrate, a plurality of spinning portions disposed in the base, and a slot portion formed between the plurality of spinning portions that are spaced apart from each other. of others. The light-emitting element is disposed on the substrate and electrically connected to corresponding portions of the plurality of spinning portions. The sealing resin member seals the substrate and the light emitting element. The sealing resin member is separated from a plurality of first groove portions and extends in a second direction that crosses the first direction.
    The present invention provides a light emitting device in which a tension occurring between the enclosing member and the substrate can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
    FIG. 1 is a schematic plan view of a light emitting device according to a first embodiment.
    FIG. 2 is an enlarged close-up plan view of the light-emitting element shown in FIG. 1.
    FIG. 3 is a cross-sectional view taken along line A-A of FIG. two.
    FIG. 4 is an enlarged view of FIG. 1.
    FIG. 5 is a schematic plan view of a light emitting device according to a second embodiment.
    FIG. 6 is a schematic plan view of a light emitting device according to a third embodiment.
    FIG. 7 is an enlarged plan view of a slot portion. DETAILED DESCRIPTION OF MODALITIES
    Hereinafter, embodiments of the invention will be described with reference to the drawings. In the description of the drawings below, the same or similar components are indicated by the same or similar reference symbols. However, it should be noted that the drawings are drawn schematically, and the dimensional and similar proportions of components may differ from the actual proportions. Consequently, the specific dimension and the like should be determined by considering the following description. It should be understood from the drawings and the present description that the components of the invention shown in the drawings are not limited to the illustrated dimension relationships between them, but may be provided with different relative dimensions than those shown. 1. FIRST MODE Structure of the Light Emitting Device 100
    A structure of a light emitting device 100 according to a first embodiment will be described with reference to the drawings. FIG. 1 is a plan view showing a structure of a light emitting device 100. FIG. 2 is an enlarged close-up plan view of a light-emitting element 30 shown in FIG. 1. FIG. 3 is a cross-sectional view taken along line A-A of FIG. two.
    The light emitting device 100 includes a substrate 10, a plurality of sealing resin members 20, and a plurality of light emitting elements 30. The light emitting device 100 is flexible so that it can be stored on a spool. , etc., and can be installed along a curved surface.
    Substrate 10 is an elongated flexible member. A first D-i direction shown in FIG. 1, corresponds to the longitudinal direction of the substrate 10 and a second direction D2 is substantially perpendicular to the first direction D1 and corresponds to the lateral direction of the substrate 10. The proportion of the lengths of the substrate 10 in the longitudinal direction and the lateral direction can be appropriately adjusted, by example, to be 6:1, 30:1, or 100:1. The length of the substrate 10 in the longitudinal direction can be 1150 mm, and the length of the substrate 10 in the lateral direction can be 15 mm, for example. Substrate 10 includes a flexible base 11, a plurality of spinning portions 12, a pair of end portions 13, a groove portion 14, and a reflective layer 15.
    Substrate 10 is made of a flexible insulating material. For this material, an insulating resin such as polyethylene terephthalate and polyimide can preferably be used, but there is no limitation in this regard. For example, the base 11 can be made of a strip of copper laminate or aluminum laminate that is covered with an insulating resin. The base 11 can have a thickness of from about 10 µm to about 100 µm. The material of the base 11 can be appropriately selected in view of the type of assembly of the light emitting elements 30, the reflectance, adhesion to other members, etc. For example, in the case where an alloy is used to assemble the light-emitting elements 30, a polyimide that has a high heat resistance may preferably be used, and in the case where the reflective layer 15, which will be described below, does not is disposed on the base 11, a material which has a high optical reflectance (for example a white colored material) can preferably be used.
    The plurality of wiring portions 12 are disposed on a first main surface of the base 11. Each of the plurality of wiring portions 12 is made of a thin metal film such as copper laminate or aluminum laminate, for example. Each of the plurality of spinning portions 12 may be crank-shaped, as shown in FIG. 1. The plurality of spinning portions 12 can be arranged in a zigzag fashion along the first direction Dr. The plurality of spinning portions 12 are also spaced apart. In the present embodiment, the plurality of wiring portions 12 are covered with a reflective layer 15 and are connected to a corresponding light-emitting element 30 at a corresponding aperture portion 151 to be described below.
    The spinning portions 12 have a thickness that does not impair the flexibility of the substrate 10 and a thickness of 8 µm to 150 µm is preferable.
    The spinning portions 12 are preferably arranged on the base 11 with the largest possible area. With this placement, heat dissipation can be improved.
    The corners of the spinning portions 12 are preferably rounded. More specifically, the radius of rounded corners is preferably 100 µm or more.
    A pair of end portions 13 may be arranged extending along the first direction D1 on the main surface of the base 11.0 The pair of end portions 13 may be disposed along the second direction D2 on either side of each of the plurality of end portions. wiring 12. As in the present embodiment, with the 0 pair of end portions 13 extending along the first direction D1 to approximately the entire sides of the base 11 without being interrupted, the voltage that is generated at the time of bending the substrate 10 and is accumulated in the light-emitting elements 30 and in the sealing resin 20 can be reduced. A pair of external wires 131 is connected to the pair of terminal portions 13, respectively. Electrical power is supplied through the pair of external wires 131 to the pair of terminal portions 13. The pair of external wires 131 can be connected to corresponding portions of known connectors (not shown) arranged in the base 10.
    The pair of end portions 13 together with the wiring portions 12 can increase the freedom in placing the light-emitting elements 30. For example, it is possible that of six light-emitting elements 30 to be arranged three in the first direction D1 and two in the second direction D2 as a block and connected in parallel, hereafter twelve blocks are arranged in the first direction D1 and connected in series by a pair of terminal portions 13. The pair of terminal portions 13 is made up of at least one terminal portion of positive side and a negative-side end portion, and the number of ends of each of the pair of end portions 13 is not specifically limited. Therefore, each of the pair of end portions 13 can consist of a single end or can be made of a plurality of ends.
    The slot portions 14 are portions in the base 11 where the plurality of wiring portions 12 and the pair of end portions 13 are not disposed. That is, the slot portions 14 are disposed between the plurality of spinning portions 12 that are spaced apart from each other, and between the spinning portions 12 and their corresponding end portions 13. In addition, the slot portions 14 can be arranged between the pair of end portions 13 which are separated from each other. The slot portions 14 are crank-shaped when viewed from above, as shown in Figure 1. The gap between the slot portions 14 is preferably narrower than the width of the spinning portions 12 and, for example, may be about from 0.05 mm to about 5 mm. The configuration of the slot portions 14 will be described below.
    The reflective layer 15 covers the base 11, the plurality of spinning portions 12, the pair of end portions 13, and the groove portions 14. The reflective layer 15 can cover approximately the entire upper surface of the substrate 10, except for the portions of opening 151 which are described below. The reflective layer 15 is made of a material that reflects the emission of the plurality of light emitting elements 30 and the light whose wavelength is converted by a wavelength converting member which will be described later. For such a material, an insulating white paint which is called a white protective coating made of a silicone resin containing titanium oxide is preferably used, but there is no limitation in this regard. Reflective layer 15 includes a plurality of aperture portions 151 as shown in FIG. 2 and in FIG. 3. Opening portions 151 are arranged so that light-emitting elements 30 are connected to two wiring portions 12 or to a wiring portion 12 and an end portion 13, respectively.
    The plurality of sealing resin members 20 are disposed on the substrate 10 to cover the opening portions 151 of the reflective layer 15. In the present embodiment, the plurality of sealing resin members 20 are arranged in a row along the first direction D-f. Each of the sealing resin members 20 seals a light-emitting element 30. In the present embodiment, the sealing resin members 20 respectively have a hemisphere shape with the light-emitting element 30 at the center, but the shape is not limited thereto. . These sealing resin members 20 are made of a light-transmissible resin (an epoxy resin, a urea resin, a silicone resin, etc.). The sealing resin members 20 may contain a light scattering agent (barium sulfate, titanium oxide, aluminum oxide, silicon oxide, etc.). Furthermore, the sealing resin members 20 preferably contain a wavelength converting member such as a fluorescent material that absorbs light from the light emitting element 30 and releases light having a different wavelength than the absorbed light. Examples of a wavelength converting member include an oxide-based fluorescent material, a sulfide-based fluorescent material, and a nitride-based fluorescent material. For example, a light emitting element based on gallium nitride to emit blue light is used as light emitting element and fluorescent materials to absorb blue light, such as a fluorescent material based on YAG or a fluorescent material based on l_AG to emitting yellow to green light, a SiAION-based fluorescent material to emit green light, and a SCASN-based fluorescent material and a CASN-based fluorescent material to emit red light, are preferably used alone or in combination. Particularly, for the light emitting devices used for display devices such as the backlights of liquid crystal TV displays and screens, a SiAION fluorescent material and a SCASN fluorescent material are preferably used in combination. Furthermore, for lighting applications, a fluorescent material based on YAG or a fluorescent material based on 1_AG and a fluorescent material based on SCASN or a fluorescent material based on CASN are preferably used in combination.
    In the substrate 10, the plurality of light-emitting elements 30 are respectively disposed in the opening portions 151 of the reflective layer 15. That is, the plurality of light-emitting elements 30 are respectively disposed separate from the first slot portions extending in the second. direction D2 that crosses the first direction D-|. With such an arrangement, separation of the plurality of light-emitting elements 30 from the substrate 10 can be avoided. In the present embodiment, the plurality of light-emitting elements 30 are arranged in a line along the first direction. The two light-emitting elements 30 arranged in the center of the line are respectively connected to the spinning piece 12 and to the end portion 13. Others light-emitting elements 30 are respectively connected to the two spinning portions 12. In the present embodiment, the light-emitting elements 30 are mounted on the substrate 10 in flip-chip fashion so that the longitudinal direction of each light-emitting element 30 is substantially parallel to the second direction D2. In detail, the light-emitting elements 30 respectively include a semiconductor structure 31, a p-side electrode 32, an n-side electrode 33, and an insulating layer 24, as shown in Figure 3. The semiconductor structure 31 includes a p-side layer. n-type, an active layer, and a p-type layer made respectively of a semiconductor based on gallium nitride and superimposed in this order on a light-transmitting sapphire substrate. The n-side electrode 33 is arranged extending to a lower portion of the p-type layer via insulating layer 34. The p-side electrode 32 and the n-side electrode 33 are respectively connected to a pair of wiring portions 12 via a pair of members of union 35. For the union member, an alloy such as an alloy based on Sn-Ag-Cu and an alloy based on Au-Sn, or shielding made of metal such as Au, for example, is preferably used. A filler 36 is applied between the light emitting element 30 and the substrate 10.0 The filler material 36 can be made of a silicone resin or an epoxy resin, for example. The filler material 36 preferably has a light-reflecting property and more specifically contains titanium oxide or silicon oxide which has a white color. Such filler material 36 is preferably disposed in the groove portion 14, in the plurality of spinning portions 12, and further in the reflective layer 15, as shown in FIG. 2 and in FIG. 3. With this arrangement, the light extraction efficiency can be increased and also the portions where the light-emitting elements 30 are arranged can be reinforced efficiently.
    The assembly of the light emitting elements 30 is not limited to a flip-chip assembly and a molding joint or a bonding wire joint can be employed to make the joint. Slot Portion Setup 14
    Next, the configuration of the groove portion 14 will be described with reference to the drawings. FIG. 4 shows a partially enlarged view of FIG. 1.
    The groove portion 14 includes at least a first groove portion 141, at least a second groove portion 142, and at least a third groove portion 143.
    The first groove portion 141 extends in a direction that crosses perpendicularly the first direction DI which is the longitudinal direction of the substrate. In the present embodiment, the first slot portion 141 extends in the second direction D2 which is a lateral direction of the substrate. The length 141S of the first slot portion 141 is about a quarter of the width 10S of the substrate 10 in the second direction D2.
    The second slot portion 142 extends along the direction that crosses the first direction D1 which is the longitudinal direction. In the present embodiment, similarly to the first slot portion 141, the second slot portion 142 extends in the second direction D2 which is a lateral direction of the substrate. Thus, the first slot portion 141 and the second slot portion 142 are formed approximately parallel to each other. Furthermore, the first slot portions 141 and the second slot portions 142 are disposed at different locations in the first D1 direction. That is, the first slot portions 141 and the second slot portions 142 are not formed along a single straight line in the second direction D2. Furthermore, the first slot portions 141 and the second slot portions 142 are formed at different locations in the second direction D2. The length 142S of the second slot portions 142 is, similarly to the first slot portions, about a quarter of the width 10S of the substrate 10 in the second direction D2.
    A third slot portion 143 continues with at least a first slot portion 141 and at least a second slot portion 142. The third slot portion 143 extends along a direction that crosses the first slot portion 141 and the second slot portion 142. In the present embodiment, the third slot portions 143 extend along the first direction DI which is the longitudinal direction of the substrate. Thus, third slot portions 143 substantially perpendicularly cross first slot portions 141 and second slot portions 142 respectively. The length 143S of the third slot portions 143 is greater than the length 141S of the first slot portions 141 and the length 142S of the second slot portions 142, but is not limited thereto. At least one light-emitting element 30 may be disposed on the third groove portion 143. A sealing resin member 20 sealing the light-emitting element 30 is disposed on each of the third groove portions 143.
    The first groove portions 141 and the third groove portions 143 are respectively connected to each other in a curve and the second groove portions 142 and the third groove portions 143 are respectively connected to each other in a curve. This placement allows an easy connection between the first groove portions 141 and the third groove portions 143 and between the second grooves 142 and the third grooves 143. As described above, a plurality of groove portions are easily connected in a curve, the which allows to avoid or reduce stress concentration in the regions where the plurality of groove portions are connected to each other. Consequently, damage to the groove portions 14 and the spinning portions 12 can be avoided due to bending of the substrate 10.
    In the present embodiment, first groove portions 141 are spaced apart from each of the corresponding sealing resin members 20 and the light emitting member 30. Similarly, the second groove portions 142 are spaced apart from each of the corresponding resin members. seal 20 and light emitting member 30. That is, in the first direction D1 the resin seal member 20 and light emitting member 30 are located between one of the first groove portions 141 and the corresponding second groove portion 142. Thus, the locations of the first groove portions 141 in the first D1 direction are different from the locations of the sealing resin members 20 and the light emitting elements 30 in the first direction. Similarly, the locations of the second groove portions 142 in the first D1 direction. are different from the locations of the sealing resin members 20 and the light emitting elements 30 in the first direction Di. More specifically, in the first direction the second groove portions 142 and the sealing resin members 20 are preferably spaced apart by a distance of 0.5 mm or more.
    The locations of the first slot portions 141 in the second direction D2 differ from the locations of the second slot portions 142 in the second direction D2, however, the substrate 10 tends to bend at the first slot portions 141 and the second slot portions 142. On the other hand, the substrate 10 has a longer side in the longitudinal direction, so that the substrate 10 will likely not bend in the third groove portions 143 that are formed along the longitudinal direction.
    The light emitting device 100 as described above employs flexible substrate 10 so that one processing method per roll can be used for fabrication. Performance and Effect
    (1) In the light emitting device 100 according to a first embodiment, the sealing resin 20 is disposed separate from a plurality of first groove portions 141 which are between the plurality of groove portions 14 and extend in a second direction D2. crossing the first direction D1 As described above, the sealing resin members 20 are respectively separated from the first groove portions 141. Thus, in the case where the substrate 10 is bent along the first groove portions 141, the bending force of the substrate 10 accumulated in the connecting portions with the sealing resin members 20 can be reduced. In other words, placing the substrate 10 so that it can be easily bent along the first groove portions 141 which are respectively separated from the sealing resin members 20 allows the reduction of a built-up tension in the connecting portions between the substrate 10 and the sealing resin members 20. Thus, the sealing resin members 20 can be prevented from coming loose from the substrate 10.
    (2) The locations of the second groove portions 142 in the first direction are different from the locations of the sealing resin members 20 and the light emitting elements 30 in the first direction D1. Thus, it is still possible to prevent the bending force of the substrate 10 from building up at the connecting portions with the sealing resin members 20.
    (3) Sealing resin members 20 are disposed on the third groove portions 143 respectively. Thus, the sealing resin members 20 are respectively separate from the first groove portions 141 and the second groove portions 142 so that the bending force of the substrate 10 accumulated in the connecting portions with the sealing resin members 20 can be reduced. 2, SECOND MODE
    In the following, a structure of a light emitting device 100A according to a second embodiment will be described with reference to the drawings. The difference between the second mode and the first mode is that five light-emitting elements 30 are connected to a pair of wiring portions 12. Now this difference will be prominently described below.
    FIG. 5 is a partially enlarged view showing a configuration of a light emitting device 100A. As shown in Figure 5, light emitting device 100A may have a configuration in which a plurality of base patterns are connected in a longitudinal direction of light emitting device 100A, in which each base pattern may include first and second portions of wiring 121, 122, a slot portion 14A, five sealing resin members 20, and five light emitting elements 30.
    The first and second spinning portions 121, 122 are adjacent to each other via slot portion 14A. In a plan view, the first wiring portion 121 may include four projected first portions 121a and five recessed portions 121b. The first four projected portions 121a project towards the side of the second wiring portion 122. The first five recessed portions 121b are respectively formed on both sides of each of the four first projected portions 121a.
    Furthermore, in a plan view, the second spinning portion 122 may include five second projecting portions 122a and four second recessed portions 122b. The five second projecting portions 122a protrude towards the side of the first wiring portion 121. The four second projecting portions 122b are respectively formed on either side of each of the five second projecting portions 122a. The four first projecting portions 121a respectively project into the four second projecting portions 122b in an alternating manner and the five second projecting portions 122a respectively project into the five second projecting portions 121b in an alternating manner.
    The slot portion 14A may include a first slot portion 141, a second slot portion 142, five third slot portions 143, four fourth slot portions 144, and eight fifth slot portions 145.
    The configuration of the first to third slot portions 141 to 143 is similar to that in the first embodiment.
    The four fourth slot portions 144 are disposed at different locations than the third slot portions 143 in the second direction D2. The four fourth slot portions 144 are respectively disposed between the five third slot portions 143 in the first D1 direction. In the present embodiment, the four fourth slot portions 144 respectively extend along the first direction DT to be approximately parallel to the five third slot portions 143.
    The eight fifth slot portions 145 are respectively connected to the third slot portion 143 and the fourth slot portion 144. That is, the third slot portions 143 and the fourth slot portions 144 are connected by the fifth slot portions 145 respectively. In the present embodiment, the fifth slot portions 145 extend along the second direction D2 and approximately parallel to the first slot portions 141 and the second slot portions 142 respectively.
    In the light emitting device 100A as described above, the sealing resin members 20 are also separate from the first groove portions 141 and the second groove portions 142 of each groove portion 14A. Thus, the sealing resin members 20 can be prevented from coming loose from the substrate 10. 3. THIRD MODE
    In the following, a structure of a light emitting device 100B according to a third embodiment will be described with reference to the drawings. The third embodiment differs from the first embodiment in that the shape of the groove portions 14 is different, three or four end portions 13 are provided, and each of the two sealing resin members 20 seals at least one light-emitting element 30 is separate in each. hypothetical line in the second direction D2. Now, mainly the differences will be described below.
    FIG. 6 is a partially enlarged plan view showing a configuration of a light emitting device 100B. As shown in FIG. 6, light emitting device 100B may include a plurality of unit patterns, each of which includes: third through sixth wiring portions 123 to 126, a slot portion 14B, and a slot portion 14C. In FIG. 6, a portion of the light emitting device 100B is shown enlarged, and in the light emitting device 100B, the pattern shown in FIG. 6 is repeatedly arranged in the longitudinal direction.
    Each slot portion 14B is formed between the third spinning portion 123 and the fourth spinning portion 124. Each slot portion 14C is formed between the fifth spinning portion 125 and the sixth spinning portion 126. Each of the slot portions 14B and of the slot portions 14C may include a sixth slot portion 146, a seventh slot portion 147 and an eighth slot portion 148.
    The sixth groove portions 146 respectively extend along a direction that crosses the first direction D1. In the present embodiment, each sixth slot portion 146 extends along the second direction D2 which is a lateral direction of the substrate.
    The seventh groove portions 147 extend along a direction that crosses perpendicularly the first direction D-i. In the present embodiment, each seventh slot portion 147 extends along the second direction D2 which is a lateral direction of the substrate. Furthermore, the sixth groove portions 146 and the seventh groove portions 147 are arranged at different locations in the first direction. Meanwhile, the sixth groove portions 146 and the seventh groove portions 147 which are adjacent to each other are arranged at the same locations in the second direction D2.
    The eight slot portions 148 continue with the sixth slot portions 146 and the seventh slot portions 147 respectively. The eighth slots 148 extend along a direction that intersects the sixth slot portions 146 and the seventh slot portions 147. In the present embodiment, the eighth slot portions 148 extend along the first direction DI which is the longitudinal direction. of the substrate. Eighth slot portions 148 substantially perpendicularly cross sixth slot portions 146 and seventh slot portions 147. Light-emitting elements 30 are disposed over eighth slot portions 148 respectively. The sealing resin members 20 which seal the light-emitting elements 30 are disposed over the eighth slot portions 148 respectively.
    In the light emitting device 100B as described above, the resin sealing members 20 are also separated from the sixth groove portions 146 and the seventh groove portions 147 of each of the groove portions 14B and 14B. Thus, the sealing resin members 20 can be prevented from coming loose from the substrate 10. OTHER MODALITIES
    The present invention is described with reference to the embodiments illustrated in the accompanying drawings. It should be understood, however, that the description and drawings are intended to be illustrative of the present invention, and the scope of the present invention is not limited to those described above. Various alternative modalities, examples, and operating technologies will be apparent to the skilled person from the description provided herein.
    (A) In the embodiments described above, the sealing resin members 20 and the light emitting elements 30 are disposed on a main surface which is on one side of the substrate 10, but the arrangement is not limited thereto. The sealing resin members 20 and the light-emitting elements 30 can also be disposed on the main surface and on the opposite surface of the substrate 10.
    (B) In the above embodiments, each of the light-emitting elements 30 is connected to two portions of wiring 12, but is not limited thereto. Each of the light-emitting elements 30 can be connected to three wiring portions 12. In addition, each of the sealing resin members 20 is disposed on the two wiring portions 12, but may be arranged on three wiring portions 12.
    (C) In the above embodiments, all of the spinning portions 12 are provided with at least one enclosing member 20 and at least one light-emitting element 30, but are not limited thereto. The light emitting element 30 and/or the sealing element 20 may not be disposed in some of the wiring portions 12.
    (D) In the above embodiments, substrate 10 includes three or more portions of spinning 12, but at least two portions of spinning 12 are sufficient. Thus, the light emitting device 100 includes at least one sealing resin member 20 and a light emitting element 30.
    (E) In the above embodiments, a pair of (two) wiring portions 12 are connected to a light-emitting element 30, but a pair of wiring portions 12 may be connected to a plurality of light-emitting elements 30. , at least one light-emitting element 30 may be connected to a pair of end portions 13.
    (F) In the above embodiments, a enclosing member 20 seals a light-emitting element 30, but a enclosing member 20 can seal a plurality of light-emitting elements 30.
    (G) In the above embodiments, in a plan view, the shape of the spinning portion 12 is respectively illustrated in FIG. 2, and in FIG. 4 to FIG. 6, but the shape of the spinning portion 12 is not limited thereto. The shape of the spinning portion 12 in plan view can be changed appropriately according to the size of the substrate 10 and the number of light-emitting elements to be used.
    (H) In the above embodiments, the slot portion 14 includes slot portions extending in the second direction D2 (e.g., the first and second slot portions 141, 142), but is not limited thereto. The groove portion 14 includes at least one groove portion that extends in a direction that crosses the first D1 direction.
    (I) In the above embodiments, the slot portion 14 is made of a plurality of straight slot portions, but not limited to them. At least one of the plurality of groove portions can be formed with a curved shape, a wavy shape, or the like.
    (J) Although not shown in the above embodiments, in addition to the members described above, an associated member such as a Zener diode may be disposed on the substrate 10 or on the wiring portions 12. The voltage built up between the associated members and the substrate 10 may be reduced by locating the associated members in accordance with the spinning portions 12 and the slot portion 14 in a manner similar to that of the light-emitting elements 30.
    (K) In the above first embodiment, substrate 10 includes a pair of end portions 13, but is not limited thereto. For example, substrate 10 includes twelve blocks of light-emitting elements 30 and twelve pairs of terminals 13 in which six light-emitting elements 30 are disposed, three in the first D1 direction and two in the second D2 direction and are electrically connected as a block. then twelve blocks are aligned in the first D1 direction and twelve pairs of terminals 13 are respectively connected to respective portions of the twelve blocks. Such a connection allows the dimming operation to be performed in the case where the light emitting device 100 is used as the backlight of a TV display, for example.
    (L) Although not shown in the above embodiments, in T-shaped portions between the groove portion 14, the base 11 can be heavily bent along the corresponding groove portions, which can lead to damage of the substrate 100 caused by the ends. of a plurality of the wiring portions. Thus, letting the base 11 bend in multiple directions will be advantageous. For example, as shown in FIG. 7 showing an enlarged view of slot portion 14, substrate 10 may include first through third spinning portions 201 to 203, and at least one first straight slot portion 301 and at least one second straight slot portion 302. The first spinning portion 201 is adjacent to the second and third spinning portions 202, 203, respectively. The second and third spinning portions 202, 203 are adjacent to each other. The first straight groove portion 301 is disposed in a straight line between the first spinning portion 201 and the second and third spinning portions 202, 2303, respectively. The second straight slot portion 302 is disposed in a straight line between the second spinning portion and the third spinning portion 203. In addition, the second straight slot portion 302 is disposed substantially perpendicular to the first straight slot portion 301. , the first straight groove portions 301 and the second straight groove portions 302 intersect in a T-shape.
    In a plan view, the first spinning portion 201 further includes a projection 201A protruding from the first straight slot portion 301 toward the second straight slot portion 302. In the example shown in FIG. 7, the flat shape of the projecting portion 201A is approximately semicircular, but other suitable shapes such as triangular or trapezoidal can be employed. As described above, in the region where the first straight groove portion 301 and the second straight groove 302 intersect, the groove takes on a Y-shape by the projection 201A. With this placement, it is possible to prevent the base 11 from bending too sharply along the first straight groove portion 301 or the second straight groove portion 302.
    Furthermore, as shown in FIG. 7, the smallest distance Wminl between the projection 201A and the second spinning portion 202 and the width W1 of the first straight groove portion 301 are approximately equal. The shortest distance Wmin2 between the projection 201A and the third wiring portion 203 and the width W1 of the first straight groove portion 301 are approximately equal. The shortest distance Wminl and the shortest distance Wmin2 are approximately equal. As described above, the projection 201A allows the width of the slots from the first to the third wiring portions 201 to 203 to be approximately the same or reduces the difference in width thereof, which can prevent the base 11 from bending sharply.
    Furthermore, it is preferable that the width W1 of the second straight groove portion 302 be wider in the direction of the projection 201A. Thus, the walls on both sides of the second straight groove portion 302 are formed with curved surfaces so that the second straight groove portion 302 can be easily connected to the first straight groove portion 301.
    In the configurations described above, the slot portions are disposed between a plurality of spinning portions respectively, but the slot portions can be formed between one of the pair of end portions and one or more spinning portions.
    As described above, it should be obvious that various other embodiments are possible without departing from the spirit and scope of the present invention. Accordingly, the scope and spirit of the present invention should be limited only by the following claims.
    Reference Numerals 100, IOOA, 1008 - light emitting device
    10 - substrate
    11 - base
    12 - wiring portion
    13 - terminal portion
    14, 14A, 14B - slot portion
    141 to 148 - first to eighth slot portions
    5 15 - reflective layer
    20 - sealing resin member
    30 - light emitting element
    D1 - first direction
    D2 - second direction
    权利要求:
    Claims (9)
    [0001]
    1. Light emitting device (100, 100A, 100B) characterized in that it comprises: a substrate (10) extending in a first direction (D1) corresponding to a longitudinal direction of the substrate (10); wherein the substrate (10) includes a flexible base (11), a plurality of spinning portions (12) disposed in the base, and (11) a slot portion (14, 14A, 14B) formed between the plurality of spinning portions. wiring (12) spaced apart from each other; a light-emitting element (30) disposed on the substrate (10) and electrically connected to the plurality of wiring portions (12); and a sealing resin member (20) sealing the light-emitting element (30) and a portion of the substrate (10); wherein the sealing resin member (20) is spaced from a first groove portion (141) of the groove portion (14, 14A, 14B), the first groove portion (141) extending in a second direction (D2 ) crossing the first direction (D1), wherein the sealing resin member (20) and the first groove portion (141) are disposed along the first direction (D1) at different locations, and the groove portion (14 , 14A, 14B) comprises a first slot portion (141), a second slot portion (142) extending in the second direction (D2), and a third slot portion (143) connecting the first slot portion (141 ) and the second groove portion (142), and the sealing resin member (20) is disposed over the third groove portion (143).
    [0002]
    2. A light-emitting device (100, 100A, 100B) according to claim 1, characterized in that the light-emitting element (30) is separate from the first slot portion (141) of the slot portion (14 , 14A, 14B) and extends in a second direction (D2) that crosses the first direction (D1).
    [0003]
    3. A light emitting device (100, 100A, 100B) according to claim 1, characterized in that the sealing resin member (20) and the second slot portion (142) are disposed along the first direction (D1) at different locations.
    [0004]
    4. A light emitting device (100, 100A, 100B) according to claim 1, characterized in that the sealing resin member (20) is located between the first groove portion (141) and the second groove portion (142) with respect to the first direction (D1).
    [0005]
    5. A light-emitting device (100, 100A, 100B) according to claim 1, characterized in that the first slot portion (141) and the second slot portion (142) extend from the third slot portion groove (143) in the same direction.
    [0006]
    6. A light emitting device (100, 100A, 100B) according to claim 1, characterized in that the first slot portion (141) and the second slot portion (142) extend from the third slot portion groove (143) in opposite directions.
    [0007]
    7. Light emitting device (100, 100A, 100B) according to claim 1, characterized in that the slot portion (14, 14A, 14B) defines a T-shaped region.
    [0008]
    8. A light emitting device (100, 100A, 100B) according to claim 7, characterized in that at least one of the plurality of wiring portions (12) includes a protrusion projecting in the region in the form of T of the groove portion (14, 14A, 14B) as seen in plan view.
    [0009]
    9. Light emitting device (100, 100A, 100B), according to claim 1, characterized in that the second direction (D2) is perpendicular to the first direction (D1).
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    TW201810708A|2018-03-16|
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    KR20140007288A|2014-01-17|
    ZA201409541B|2016-08-31|
    RU2013131256A|2015-01-20|
    EP2685153B1|2020-08-05|
    EP2685153A2|2014-01-15|
    KR102091071B1|2020-03-20|
    TWI618263B|2018-03-11|
    ZA201304926B|2015-06-24|
    ZA201409543B|2016-08-31|
    JP2014017356A|2014-01-30|
    RU2017143143A3|2021-01-15|
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    法律状态:
    2015-08-25| 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]|
    2020-03-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-07-14| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2021-03-16| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-18| 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 08/07/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2012-153421|2012-07-09|
    JP2012153421A|JP5609925B2|2012-07-09|2012-07-09|Light emitting device|
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