• 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 aim is to provide an image display device in which the number of pixels of an arrangement of light emitting element or the like can be reduced and in which the cost can be drastically reduced while the degradation of the light. image is minimized, and a display unit used for this purpose. In an image display device in which a plurality of display units including pixels made of light emitting elements or the like are arranged in a plane, the display unit is configured by groups of grid-shaped pixels. in two-dimensional arrangement constituted by providing pixels in locations corresponding respectively to three network points of a square grid, and by constituting an area of space in which there is no pixel in a location corresponding to the remaining point of the grid.
    公开号:BE1018662A3
    申请号:E2009/0092
    申请日:2009-02-19
    公开日:2011-06-07
    发明作者:
    申请人:Mitsubishi Electric Corp；
    IPC主号:
    专利说明:

    IMAGE DISPLAY DEVICE AND DISPLAY UNIT FOR IMAGE DISPLAY DEVICE
    BACKGROUND OF THE INVENTION Field of the Invention
    The present invention relates to an image display device comprising electroluminescent elements such as LEDs arranged in a plane and a display unit used for this purpose.
    Description of the related art
    In a related art, a large image display device includes many display units containing light emitting elements arranged in a plane. Recently, LEDs (light-emitting diodes) have become the preferred elements among electroluminescent elements because the arrangement and pitch of the LEDs of the three primary colors can be arbitrarily designed. Large image display devices having different resolutions and brightness can therefore be formed according to the intended use.
    The display units of the large image display device comprise pixels or picture elements containing sub-pixels of the respective colors of at least R (red), G (green), B (blue). ) arranged in a square grid for displaying a color video (in the following description, the term "subpixel" is used to designate the same as an individual electroluminescent element).
    In addition, R, G, B are assigned to three of four (2 x 2) pixel pixels, and an appropriate color is assigned to the fourth remaining pixel depending on the intended use. For example, G has been assigned to the fourth pixel in a large image display device in which cathode ray tubes CRTs or discharge tubes are arranged, and R has been assigned to this pixel in a device in which are arranged LEDs (see Japanese Patent No. 3702699). Recently, there is an example where W (white) is assigned as a pixel pattern of an organic light-emitting diode display or the like (see, for example, Japanese Patent No. 3416570).
    More specifically recently appeared an LED device called 3-in-l featuring LED chips of three colors R, G, B in a single LED lamp. When such 3-in-1 LED devices are implemented, a single pixel emits three primary colors, and the three colors become easier to mix than in the system where three R, G, B LEDs are arranged. As a result, the viewing distance at which an observer looks at an image becomes smaller. As a 3-in-1 organization of the LED device, there is a system as disclosed in JP-A-2001-75508.
    In this type of large image display device, it is necessary to arrange the pixels in a higher density and with a smaller pixel pitch as the resolution becomes higher. Therefore, in a large, high resolution image display device including, for example, an LED array, the number of LEDs per unit area increases and the cost becomes higher. Especially in the use of high quality image display with high definition content such as "Hi-Vision", there is a problem that the LED layout density becomes higher and the cost drastically increases.
    SUMMARY OF THE INVENTION
    The invention has been developed to solve the problems described above. An object of the invention is to provide an image display device in which the number of pixels of electroluminescent elements or similar components can be reduced and in which the cost can be lowered drastically while the degradation of image is minimized, and a display unit used for this purpose.
    In an image display device in which a plurality of display units are disposed in a plane, the display unit is configured with two-dimensional grid-shaped pixel groups constituted by providing pixels in locations. respectively corresponding to three points of the grid of a square grid, and constituting a space zone in which there is no pixel in a location corresponding to the remaining point of the grid.
    According to the invention, an image display device can be obtained in which the number of pixels of the electroluminescent elements or the like can be reduced and the cost can be lowered drastically while the degradation of the image is minimized, and a display unit used for this purpose.
    The above-mentioned and other objects, features, aspects, and advantages of the present invention will become more apparent from the following detailed description of the present invention taken in conjunction with the accompanying drawings.
    BRIEF DESCRIPTION OF THE DRAWINGS
    Fig. 1 is an explanatory block diagram of a large image display device as targeted by the invention.
    Fig. 2 is an explanatory diagram showing a pixel arrangement of a conventional display unit.
    Fig. 3 is an explanatory diagram showing a pixel arrangement of a display unit in an embodiment 1 of the invention.
    Fig. 4 is an explanatory diagram showing a pixel arrangement in which the pixels are arranged in the manner of a square grid.
    Fig. 5 is an explanatory diagram showing a resolution according to the pixel arrangement shown in FIG. 4.
    Figs. 6A to 6D are separate graphs obtained by separating the pixel arrangement shown in FIG. 4 and corresponding to four grids.
    Fig. 7 is an explanatory diagram showing a resolution according to the separate arrangements of the pixels presented in FIGS. 6A to 6D.
    Fig. 8 is an explanatory diagram showing a pixel arrangement constituted by combining the separate pixel arrangements shown in Figs. 6A to 6D.
    Figs. 9A-9C are explanatory diagrams showing a resolution according to the combined pixel arrangement shown in FIG. 8.
    Fig. 10 is a diagram giving an explanation of the resolution according to the pixel arrangement of the display unit presented in the execution 1.
    Fig. 11 is an explanatory diagram showing a resolution according to the pixel arrangement shown in FIG. 10.
    Fig. 12 is an explanatory diagram showing a pixel arrangement of a display unit shown in Embodiment 2 of the invention.
    Fig. 13 is an explanatory diagram showing resolution according to the pixel arrangement shown in FIG. 12.
    Fig. 14 is an explanatory diagram showing a pixel arrangement of each display unit shown in embodiment 3 of the invention.
    Fig. 15 is an explanatory diagram showing a pixel arrangement of each display unit shown in embodiment 4 of the invention.
    Fig. 16 is an explanatory diagram showing a resolution according to the pixel arrangement shown in FIG. 13.
    Fig. 17 is an explanatory diagram showing a resolution according to the pixel arrangement shown in FIG. 14.
    Fig. 18 is an explanatory diagram controlling the pixels in the embodiment 3 of the invention.
    Fig. 19 is an explanatory diagram controlling the pixels in the embodiment 4 of the invention.
    Fig. 20 is an explanatory block diagram showing an image display device in the embodiment of the invention.
    Fig. 21 is an explanatory diagram of the resolution in the image display device shown in FIG. 20.
    Fig. 22 is an explanatory diagram showing the pixel arrangement of each display unit in embodiment 6 of the invention.
    Fig. 23 is an explanatory diagram showing an example of the pixel arrangement of each display unit in embodiment 7 of the invention.
    Fig. 24 is an explanatory diagram showing another example of pixel arrangement of each display unit of the embodiment 7 of the invention.
    Fig. 25 is an explanatory diagram showing an example of an LED device of a 3-in-1 system used for execution 7.
    Fig. 26 is a sectional view of a main portion showing a display unit of the embodiment 8 of the invention.
    DETAILED DESCRIPTION OF THE INVENTION
    Execution 1
    Fig. 1 is an explanatory block diagram of a large image display device according to the invention.
    In FIG. 1, a portion 2 of the display of the large image display device 1 comprises a plurality of display units 3 arranged in a plane. Each display unit 3 is configured by groups of numerous two-dimensional layout pixels in which the pixels are arranged in a square grid.
    Figs. 2 and 3 are explanatory diagrams showing a conventional display unit and a pixel arrangement of the display unit according to the embodiment 1 of the invention. While a set of the pixel group 4 is constituted by arranging each pixel of four (2 x 2) pixels at each point of the grating of a square grid shown in FIG. 2, one pixel is removed from the four (2 x 2) pixels forming a square grid and the remaining three pixels configure a set of the pixel group 4 shown in FIG. 3. This means that in Fig. 3, a set of the group 4 of pixels is configured by respectively arranging the pixels 5 in the locations corresponding to three points of the grid of the square grid and constituting a zone 6 of space in which there is no pixel in a corresponding location at the remaining point of the grid.
    Subsequently, a resolution concept will be described in an image display device to which the invention applies.
    For ease of explanation, assume that a group 4 of pixels constituting a basic square grid shown in FIG. 2 is subdivided into four grids A, B, C, D corresponding to the respective points of the grid, Figs. 4, 5. FIG. 4 is a combined graph of the four grids A, B, C, D, and FIG. 5 is an explanatory diagram showing its resolution.
    In FIG. 4, when the horizontal sampling frequency (H) corresponds to the pixel pitch xO (y0 in the vertical direction (V)), the maximum reproducible frequency is expressed by 1 / 2x0, and similarly, the maximum recoverable frequency is expressed by l / 2y0 in the vertical direction. Fig. 5 shows the relationship in two dimensions.
    Figs. 6A to 6D, 7 are explanatory diagrams of four grids A, B, C, D and an explanatory diagram showing the resolution of the respective grids. These four grids are equal in pixel layout but different in phase, and have the same resolution. When the two respective types of grids are combined, the pixel arrangements as shown in Figs. 8A, 8B, 8C are constituted and the display unit 3 is configured by arranging a set of grid-shaped pixels.
    The respective resolution is expressed in correspondence with the respective dispositions of the pixels of Figs. 8A, 8B, 8C and have the following characteristics.
    I. A + B: the pixels in the horizontal direction are interpolated and the horizontal resolution is improved to twice that of A.
    II. A + C: the pixels in the vertical direction are interpolated and the vertical resolution is improved to twice that of A.
    III. A + D: the pixels in the diagonal direction are interpolated and the horizontal resolution and the vertical resolution are improved in comparison with that of A.
    The pixel arrangement shown in FIG. 3 is shown in combination with the four grids A, B, C, D as shown in FIG. 10, for example, as below.
    IV. A + B + D
    Regarding the resolution of IV, the grids of points I, II, III described above are combined and the horizontal resolution and the vertical resolution are improved as shown in FIG. 11. In addition, for the diagonal resolution, diagonal components appeared in spaces between the diagonal lines of III. In FIG. 8C, for example, diagonal lines L1, L3 may be shown and in FIG. 10, the diagonal line L2 is shown in the space between the diagonal lines L1, L3 of FIG. 8C and some degree of improvement is expected. The degree of improvement is shown by hatched areas shown in FIG. 11. Here, compared to the resolution shown in FIG. 5, the resolution of the hatched areas may be reduced and the grid-like space areas may be perceived as noise due to the removal of a pixel, however, the horizontal resolution and the vertical resolution are maintained.
    Such a reduction in resolution and noise are difficult to perceive through observation at an appropriate viewing distance.
    Moreover, in moving images, the relationships between the pixels change with respect to each other. In FIG. 10, when the diagonal image L1 moves horizontally towards L2, L3, for example, information is lost due to the removal of pixels at the location of L2, but the information is not lost at the location of L3 and the degradation of the image in still images is more relaxed in moving images.
    As described above, according to the embodiment 1 of the invention, since the display unit 3 is configured by two-dimensional grid-shaped pixels 4 constituted by providing pixels 5 in locations respectively corresponding to three points of the grating of a square grid, and constituting a zone 6 of space in which there is no pixel in a location corresponding to the remaining point of the grid, degradation of the image can be minimized and the cost of the elements of the The display constituting the pixels can be reduced by 25%, and the cost of the image display device can thus be reduced.
    Execution 2
    Fig. 12 is an explanatory diagram showing a pixel arrangement of a display unit 3 in the embodiment 2 of the invention, and the pixel groups 4 shown in FIG. 3 are turned 45 ° to the left from the center point of the square grids.
    In FIG. 2, the space zones 6 formed by removing a pixel from the four (2x2) pixels on the square grid can be perceived as noise in a grid form. However, in FIG. 12, the groups 4 of pixels are turned by 45 °, and the zones 6 of space in the form of a grid are therefore in an alternating arrangement, and the noise becomes less noticeable.
    Fig. 13 is an explanatory diagram showing a two-dimensional resolution shown in FIG. 12. The resolution corresponding to FIG. 12 is obtained by turning FIG. 11 showing the resolution corresponding to FIG. 3 of 45 ° and has the same surface as that of FIG. 11. The areas showing the resolution have the same area because the numbers of pixels are the same in Figs. 3 and 12.
    Suppose that the horizontal pitch of the pixels of FIG. 3 or xO, components reduced to xO / V2 appear in the horizontal and vertical components in FIG. 12. In FIG. 13, although the resolution of the diagonal lines is sacrificed, the horizontal and vertical resolution becomes higher as a function of the reduced components at x0 / V2 of the pitch of the pixels.
    Here, in the nature of the image, the resolution component of the diagonal line is generally insufficient in comparison with the components of horizontal and vertical resolution. An improvement in the horizontal and vertical resolution at the cost of the resolution component of the diagonal line thus makes the apparent resolution of the image being displayed higher and provides an improvement in the quality of the image.
    As described above, according to the embodiment 2 of the invention, since the display unit 3 is configured by groups of grid-shaped two-dimensional grid pixels constituted by providing pixels 5 in locations corresponding to three points. of pixels of the square grid and constituting the area 6 of space in which there is no pixel in a location corresponding to the remaining point of the grid, by turning the groups 4 of pixels by 45 ° with respect to the central point of the square grid, and by arranging the pixels alternately as a set, the image degradation can be further reduced and the cost reduction of the image display device can be effectively achieved.
    Execution 3
    Fig. 14 is an explanatory block diagram showing a pixel arrangement of the display unit 3 in the embodiment 3 of the invention. In FIG. 14, a group 7 of pixels constituting each display unit 3 is constituted by providing electroluminescent elements (sub-pixels) 8 of three primary colors R, G, and B such that LEDs in locations respectively corresponding to three points of the grid of a square grid, and constituting a zone 9 of space in which there is no electroluminescent element in a location corresponding to the remaining point of the grid.
    This means that each pixel group 7 is configured as a grid-shaped group of pixels in which the electroluminescent elements 8 of three primary colors R, G, and B are assigned only to locations corresponding to three points in the network of the network. square grid, and the fourth electroluminescent element (subpixel) is not provided in the location corresponding to the remaining point of the grid.
    In the case where the display unit 3 having such groups 7 of pixels is used, grid-like areas 9 may be perceived as noise. Such noise, however, is not perceived by observation at an appropriate viewing distance, and a color display can be realized even when a subpixel is removed because each group of pixels contains three primary colors.
    As described above, according to the embodiment 3 of the invention, in an image display device in which a plurality of display units comprising pixels constituted by electroluminescent elements are arranged in a plane, the unit 3 of display is configured by groups of two-dimensional grid-shaped pixels constituted by providing electroluminescent elements 8 of three primary colors R, G, and B in locations respectively corresponding to three points of the grid of a square grid, and constituting a zone 9 of space in which there is no electroluminescent element in a location corresponding to the remaining point of the grid. Therefore, an image display device can be realized in which the cost of the electroluminescent elements constituting the sub-pixels can be reduced by 25% and the cost can be drastically reduced while the image degradation is suppressed .
    Execution 4
    Fig. 15 shows a pixel arrangement of the display unit in the embodiment 4 of the invention, and the pixel groups 7 shown in FIG. 14 are rotated 45 ° to the left so that the electroluminescent element 8 of the primary color R can be located on a vertex with respect to the central point of the square grid.
    This means that the electroluminescent elements (subpixels) 9 constituting the display unit 3 are arranged in an alternating manner as an assembly by removing a sub-pixel from the four (2x2) sub-pixels present on the square grid. , assigning the electroluminescent elements 8 of the three primary colors R, G, and B to the remaining three sub-pixels, and rotating the groups 7 of pixels by 45 ° with respect to the center point of the square grid.
    Figs. 16 and 17, for example, are explanatory diagrams showing a two-dimensional resolution when three primary RGB colors are considered as a set of groups 7 of pixels and the respective groups 7 of pixels are controlled according to the sampling of an image ( which will be referred to later as the pixel control) in Figs. 14 and 15, respectively.
    In FIG. 14, the horizontal sample rate is xO (the vertical sample rate is yO). According to the sampling theorem, the maximum reproducible frequency when the sampling frequency is xO is expressed by 1 / 2x0. In the vertical direction, similarly, the maximum returnable frequency is expressed by 1 / 2y0. Fig. 16 shows the relationship in two dimensions.
    Fig. 17 showing the resolution corresponding to FIG. 15 is obtained by turning FIG. 16 of 45 ° and has the same surface as FIG. 16. In FIG. 17, the interrupted line surface corresponds to the resolution of FIG. 14 (Fig. 16) shown for comparison with the resolution of FIG. 15. The areas showing the resolution have the same area in Figs. 16 and 17 because the numbers of pixels are identical in Figs. 14 and 15. Suppose that the horizontal pitch of the pixels of FIG. 14 is xO, components reduced to x0 / V2 appear in the horizontal and vertical components in FIG. 15. In FIG. 17, although the resolution of the diagonal line is sacrificed, the horizontal and vertical resolution becomes higher as a function of the reduced components at x0 / V2 of the pitch of the pixels. Here, in the nature of the image, the resolution component of the diagonal line is generally insufficient compared to the components of horizontal and vertical resolution. An improvement in the horizontal and vertical resolution at the cost of the resolution component of the diagonal line thus makes the apparent resolution of the image being displayed higher and provides an improvement in image quality.
    In addition, the grid space areas 9 shown in FIG. 14, a subpixel of which has been removed and which can be perceived by close observation, are alternately arranged in FIG. 15 and become less noticeable as a noise.
    Figs. 18 and 19 are explanatory diagrams showing a concept of the pixel control corresponding to FIGS. 14 and 15, and each group 7 of pixels corresponds to a sampling point of an image.
    In FIG. 18, the electroluminescent elements 8 of each pixel are sequentially controlled on the basis of the sampled image signals at sampling points n, n + 1, n + 2, ... corresponding to the respective pixels in the lines of the lines of sampling n, n + 1, n + 2, ....
    In FIG. 19, the electroluminescent elements 8 of each pixel on odd lines are sequentially controlled on the basis of the sampled image signals at sampling points n, n + 1, n + 2, ... corresponding to the respective pixels turned of 45. In the lines of the odd sampling lines n, n + 1, n + 2, ..., and the electroluminescent elements 8 of each pixel on even lines are sequentially controlled on the basis of the image signals sampled at the points d sampling n ', n' + 1, n '+ 2, ... corresponding to the respective pixels turned by 45 ° in the lines of the pair sampling cloths n', n '+ 1, n' + 2, .. .
    As previously described, according to the embodiment 4 of the invention, since the groups 7 of pixels are rotated by 45 ° with respect to the center point of the square grid in the display unit 3 and the groups 7 of pixels are arranged alternatively as an assembly, the image degradation can be further reduced and the cost reduction of the electroluminescent elements can be effectively achieved.
    Execution 5
    Fig. 20 is an explanatory block diagram showing an image display device in the embodiment of the invention.
    In FIG. 20, the image signals displayed on the image display device 1 are provided as so many sampling lines 10. In the image display device 1, when the attention is focused on a micro- zone 11 corresponding to the sampling lines n to n + 9, the groups 7 of pixels shown in the embodiment 4 are arranged therein. The image signals corresponding to the electroluminescent elements 8 of the respective colors R, G, B constituting the groups 7 of pixels are sampled separately according to the locations in the space of the respective electroluminescent elements (sub-pixels) 9, and the electroluminescent elements. respective (subpixels) 9 are controlled.
    For example, each sampling line 10 contains color signals of three primary colors, and, in the line of the sampling line n, the signals R are extracted and the respective electroluminescent elements R 8 are controlled on the basis of the signals sampled at the sampling points m, m + 1, m + 2, m + 3, corresponding to R. In the line of the sampling line n + 1, the signals G and B are extracted and the elements The respective G and B electroluminescent electrodes 8 are controlled based on the sampled image signals at the sampling points ma, me, ma + 1, mc + 1, ma + 2, mc + 2, ma + 3, mc + 3,. corresponding to G and B. Similarly, in the lines of the n + 2 and n + 3 sampling lines, the respective corresponding light emitting elements 8 are controlled on the basis of the sampled image signals at the sampling points mb. , mb + 1, mb + 2, mb + 3, ... and ma, me, ma + 1, mc + 1, ma + 2, mc + 2, ma + 3, mc + 3, ..., resp ectively.
    Such a method of controlling the respective color image signals based on sampled signals as a function of locations in the space of the individual subpixels is referred to as subpixel control to distinguish it from the pixel control.
    Fig. 21 is an explanatory diagram showing a concept of resolution in the embodiment of the invention. The resolution graph Fig. 17 of the pixel control defined according to the pixel arrangement shown in FIG. 15 represents a common resolution among the three colors, and a color display can be performed. Here, when subpixel control is applied to the pixel arrangement shown in FIG. 15, the sampling points of the image increase three times and the apparent resolution becomes higher as a function of the increase of the sampling points.
    The improvement in the apparent resolution as a function of subpixel control can be qualitatively represented as an area (hatched portion) surrounding areas representing the common resolution among the three colors as shown in FIG. Since the information is representative of one of the colors R, G, B in the area, the area tends to change color to the color of the subpixel carrying the information. Although a color representation is not possible, the area is important in improving resolution because human vision is more sensitive to contrast than color and ignores color changes in detail.
    As previously described, in the embodiment of the invention, by applying the subpixel control in addition to the subpixel removal effect by the method that can suppress image degradation, the quality of image can be improved and a cost reduction of the image display device can be achieved extremely efficiently.
    Execution 6
    Fig. 22 shows a pixel arrangement of each display unit 3 in the embodiment 6 of the invention. In group 7 of pixels of the execution 3 (Fig. 14) and the execution 4 (Fig. 15), the sub-pixels are arranged to form a triangle and the vertex of the triangle is R. On the other hand, in FIG. 22, G is located at the top of the triangle.
    The sampling lines shown in FIG. 20 comprise the odd lines (n, n + 2, n + 4, ...) corresponding to R and the even lines (n + 1, n + 3, n + 5, ...) corresponding to B and G. Generally, G dominates 60% of the brightness, and there are large differences in brightness between the odd and even lines of the sample lines shown in FIG.
    20.
    Moreover, in FIG. 22, the sampling lines comprise the odd lines (n, n + 2, n + 4, ...) corresponding to G and the even lines (n + 1, n + 3, n + 5, ...) corresponding to B and R. Therefore, there are advantages that the differences in brightness between the odd and even lines of the sample lines become smaller and the flicker due to differences in brightness between the lines during display of a moving image become less noticeable in subpixel control.
    As previously described, in Embodiment 6 of the invention, by applying subpixel control in addition to the subpixel removal effect by the method that can suppress image degradation, the quality of the the image can be improved and a reduction in the cost of the image display device can be achieved extremely efficiently.
    As an additional feature present in embodiment 6, when subpixel control is applied, the colors of the sampling lines are in the complementary color relationship with the odd rows of G and the even lines of B and R. This relationship holds similarly in the longitudinal and lateral lines and the adjacent lines are in a complementary color relationship. This means that the adjacent lines complete the color deficiency in the respective lines necessary for the representation of the white. As described in Embodiment 5, details of the image tend to change colors to the colors of the sub-pixels carrying the information. However, the color change tends to decrease when the image is moving. The trend is common in the embodiments 3 to 6 of the invention.
    Execution 7
    Figs. 23, 24 are explanatory diagrams showing a pixel arrangement of a display unit according to the embodiment 7 of the invention. Fig.
    24 is an explanatory diagram showing an example using an LED device 12 of a 3-in-1 system in place of the electroluminescent elements 8 of the display unit 3 in the embodiment 3 of the invention, and the Fig.
    25 is an explanatory diagram showing an example using an LED device 12 of a 3-in-1 system in place of the electroluminescent elements 8 of the display unit 3 in the embodiment 4 of the invention.
    The LED device 12 of the 3-in-1 system comprises LED chips 13, 14, 15 of three primary colors R, G, B in a single LED lamp as shown in FIG. 26 and R, G, B are concentrated on a single point. When the device is used as the light emitting element 8 of the display unit 3, a single pixel emits light of three primary colors and the unit can be applied to a color display. The resolution is the same as that shown in Figs. 11 and 13, and the respective resolution represents the color resolution.
    Execution 8
    In the embodiments 3 to 7, a space area 9 is formed by removing a pixel of four (2x2) pixels forming a square grid. When the space is blackened, the black level of the display surface is lowered and the contrast of the image can be improved. On the other hand, when direct sunlight is received, the reflection of the external light from the black area is not negligible and the contrast may be weakened. Here, by providing an opening member forming a recessed portion on the display surface in the space zone which has been formed by removing a pixel, the incidence and reflection of the external light are suppressed and the contrast is improved.
    Fig. 26 is a sectional view of a main portion showing a display unit 3 of the embodiment 8, and shows a section along a line A-A in FIG. 15. Electroluminescent elements 8 such as LEDs are mounted on a substrate 31 of the display unit 3, and the surface of the substrate 31 is blackened by a resinous coating or the like. Some degree of reflection may be suppressed by blackening the space area 9, and when the opening members 32 forming the recessed portions are provided on the surface of the display in the space areas 9 and the inner portions of the opening members 32 are also blackened, at an incidence of direct sunlight, the reflection of the outer light which has first entered the recessed portions is significantly suppressed and the contrast is remarkably improved .
    Various modifications and alterations of this invention will be apparent to those skilled in the art without departing from the scope and spirit of this invention, and it should be understood that it is not limited to the illustrative embodiments presented herein.
    权利要求:
    Claims (11)
    [1]
    An image display device in which a plurality of display units are arranged in a plane, the display unit being configured by two-dimensional array-shaped pixel groups constituted by providing pixels in locations. respectively corresponding to three points of the grid of a square grid, and constituting a space zone in which there is no pixel in a location corresponding to the remaining point of the grid.
    [2]
    An image display device according to claim 1, wherein the pixels are rotated 45 ° with respect to the center point of the square grid so that the pixels can be alternately arranged as a set in the display unit.
    [3]
    An image display device according to claim 1 or 2, wherein electroluminescent elements of three primary colors R, G, and B are provided in the locations respectively corresponding to the three points of the grid of the square grid.
    [4]
    An image display device according to claim 3, wherein image signals corresponding to the electroluminescent elements of the three primary colors R, G, B are separately sampled according to locations in the respective color space, and the electroluminescent elements of the respective colors are driven based on the sampled signals.
    [5]
    The image display device according to claim 4, wherein the light emitting elements of the pixels are located such that the electroluminescent elements of the primary color G can be sampled by odd or even lines of the sampling lines and the electroluminescent elements of the primary color B and R may be sampled by even or odd lines of the sampling lines in the display unit.
    [6]
    An image display device according to claim 1 or 2, wherein LED devices of a 3-in-1 system comprising LED chips of three colors R, G, and B in a single LED lamp. are provided in the locations respectively corresponding to the three points of the grid of the square grid.
    [7]
    An image display device according to any one of claims 1 to 6, wherein an aperture member constituting a recessed portion is provided on a display surface in the gap area.
    [8]
    A display unit for an image display device configured with two-dimensional array-shaped grid pixel groups constituted by providing pixels in locations corresponding respectively to three points of the grating of a square grid, and constituting a space zone in which there is no pixel in a location corresponding to the remaining point of the grid.
    [9]
    An image display unit according to claim 8, wherein the pixels are rotated 45 ° with respect to the center point of the square grid so that the pixels can be arranged alternately as an assembly.
    [10]
    An image display unit according to claim 8 or 9, wherein electroluminescent elements of three primary colors R, G, and B are provided in the locations respectively corresponding to the three points of the grid of the square grid.
    [11]
    An image display unit according to claim 8 or 9, wherein LED devices of a 3-in-1 system comprising three-color LED chips R, G, and B in a single LED lamp. are provided in the locations respectively corresponding to the three points of the grid of the square grid.
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    同族专利:
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    US8711066B2|2014-04-29|
    US20090213036A1|2009-08-27|
    JP5215090B2|2013-06-19|
    US9599323B2|2017-03-21|
    JP2009230096A|2009-10-08|
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    法律状态:
    2020-10-28| MM| Lapsed because of non-payment of the annual fee|Effective date: 20200229 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2008042988|2008-02-25|
    JP2008042988|2008-02-25|
    JP2008227155|2008-09-04|
    JP2008227155A|JP5215090B2|2008-02-25|2008-09-04|Image display device and display unit for image display device|
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