JP2018124540A - Electro-optic device, electronic device, and head-mounted display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electro-optic device configured to eliminate color registration error due to a viewing angle, and an electronic device including the electro-optic device.SOLUTION: An electro-optic device includes a sub pixel 110G, a pixel contact area CH10, a sub pixel 110R, a pixel contact area CH9, a sub pixel 110G, a pixel contact area CH10, a sub pixel 110R, and a pixel contact area CH9, arranged in a first direction, X-direction. The sub pixel 110G has a color different from the sub pixel 110R. The pixel contact area CH10 and the pixel contact area CH9 have the same length (distance d5) in the X direction.SELECTED DRAWING: Figure 11

Description

  The present invention relates to an electro-optical device, an electronic apparatus, and a head mounted display.

  As an electro-optical device, for example, a plurality of color light-emitting elements including a light-emitting element that emits blue light is formed for each pixel on a substrate, and a plurality of pixels configured in units of a plurality of color sub-pixels are arranged in a matrix. A display device that is arranged and is laid out so that the relative positional relationship between the transistors of the sub-pixels of each emission color and the light-emitting portion of the light-emitting element that emits blue light is equal for each color Has been proposed (Patent Document 1).

  According to the display device disclosed in Patent Document 1, even when blue light has the highest energy and a part of the blue light leaks to an adjacent pixel, the variation in characteristics of the pixel transistor due to the influence of the leaked light varies from color to color. It can be reduced.

JP 2009-282190 A

  In the above-mentioned Patent Document 1, in the red (R), green (G), and blue (B) sub-pixels, a window insulating film is formed on the anode electrode, and R, G, which are light emitting elements are formed in the recesses of the window insulating film. B organic EL (Electro-luminescence) element is provided. The light emitting portion of each color organic EL element is an opening (window) in the concave portion of the window insulating film.

  However, in the subpixel layout of Patent Document 1, when a part of blue light leaks to the adjacent subpixels of other colors, a color mixture in which the blue light and other color lights are mixed occurs. In particular, when viewed from an oblique direction with respect to the normal direction of the sub-pixel, the mixed color is easily visually recognized.

  Further, the arrangement of the light emitting portions, that is, the sub-pixels in the organic EL element is related to the arrangement of the transistors that drive the organic EL element. Specifically, the contact for electrically connecting the anode electrode of the organic EL element and the transistor is provided outside the concave portion of the window insulating film that defines the light emitting portion. For example, according to the arrangement of the subpixels in the pixel formation region (pixel) shown in Example 1 or Example 2 of Patent Document 1, red (R) in the column direction with respect to the blue (B) subpixel. And green (G) subpixels are arranged, and the anode electrode contact is provided between the blue (B) subpixel and the red (R) or green (G) subpixel in the column direction. . Accordingly, in one pixel formation region (pixel), the column-direction interval between the blue (B) sub-pixel and the red (R) or green (G) sub-pixel is considered to be the same. On the other hand, in the pixels adjacent to each other in the column direction, an anode electrode contact is provided between the blue (B) subpixel of one pixel and the red (R) or green (G) subpixel of the other pixel. Is not provided. Therefore, the interval in the column direction between the blue (B) sub-pixel of one pixel and the red (R) or green (G) sub-pixel of the other pixel is the interval between the sub-pixels in the column direction in the pixel. It may be different. That is, it is conceivable that the distance between the sub-pixels is set to be different in the row direction or the column direction, or in the row direction and the column direction, corresponding to the arrangement of the transistors that drive the organic EL elements. Then, the state of color mixture changes depending on the direction from which the image is viewed obliquely with respect to the normal direction of the sub-pixel. When such a color mixture state is called color misregistration due to viewing angle, there is a problem that color misregistration due to viewing angle occurs.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  [Application Example] The electro-optical device according to this application example includes a first sub-pixel, a first area, a second sub-pixel, a second area, a third sub-pixel, and a third area arranged in the first direction. , A fourth sub-pixel, a fourth region, wherein the first sub-pixel is a color different from the second sub-pixel, and the third sub-pixel is a color different from the fourth sub-pixel, The first region is a pixel contact region of the first subpixel, the second region is a pixel contact region of the second subpixel, and the third region is the third subpixel. The fourth region is a pixel contact region of the fourth sub-pixel, and the first region, the second region, the third region, and the fourth region. The lengths in the first direction are preferably the same.

  According to the configuration of this application example, the length in the first direction between the first sub-pixel and the second sub-pixel having different colors and the first sub-pixel between the third sub-pixel and the fourth sub-pixel having different colors are also included. Since the length in one direction is the same, the state of color mixture depending on the viewing angle in the first direction between sub-pixels of different colors is relieved. That is, it is possible to provide an electro-optical device in which color misregistration due to the viewing angle in the first direction is reduced. Further, by setting the region between the sub-pixels in the first direction as the pixel contact region, the sub-pixels of different colors can be divided by the pixel contact region, and electrical connection to the sub-pixels of different colors can be achieved. . In other words, it is not necessary to provide a dedicated configuration for distinguishing between sub-pixels of different colors in the first direction.

The electro-optical device according to the application example further includes a fifth sub-pixel, a fifth region, a sixth sub-pixel, and a sixth region arranged in the first direction, and the fifth sub-pixel includes: The sixth sub-pixel is arranged in a second direction intersecting the first direction with respect to the first sub-pixel and the second sub-pixel, and the sixth sub-pixel is relative to the third sub-pixel and the fourth sub-pixel. Arranged in the second direction, the fifth region is a pixel contact region of the fifth sub-pixel, the sixth region is a pixel contact region of the sixth sub-pixel, and the fifth region It is preferable that the length of the sixth region in the first direction is the same.
According to this configuration, the length in the first direction between the added fifth subpixel and the sixth subpixel is also the same. Accordingly, it is possible to provide an electro-optical device that can reduce color misregistration caused by the viewing angle in the first direction and can perform color display with good appearance. In addition, by making the fifth region and the sixth region pixel contact regions, respectively, the fifth subpixel and the sixth subpixel are divided by the pixel contact region, and the electrical connection to each subpixel is established. Can be planned.

In the electro-optical device according to the application example, the first sub-pixel in the second direction, the seventh region between the second sub-pixel and the fifth sub-pixel, and the first sub-pixel in the second direction. 3 sub-pixels and an eighth region between the fourth sub-pixel and the sixth sub-pixel, and the lengths of the seventh region and the eighth region in the second direction are the same. It is preferable that
According to this configuration, it is possible to provide an electro-optical device in which color misregistration caused by the viewing angles in the first direction and the second direction is reduced.

In the electro-optical device according to the application example described above, the third sub-pixel with respect to the first sub-pixel, the first region, the second sub-pixel, and the second region arranged in the first direction. The third region, the fourth subpixel, and the fourth region may be arranged in parallel along the first direction.
According to this configuration, a maximum of four color sub-pixels are arranged at equal intervals in the first direction. Accordingly, it is possible to provide an electro-optical device that can reduce color shift due to the viewing angle in the first direction and can perform excellent color expression.

  [Application Example] The electro-optical device according to this application example includes a first sub-pixel, a first area, a second sub-pixel, a second area, a third sub-pixel, and a third area arranged in the first direction. , Fourth sub-pixel, fourth region, fifth region, sixth region, fifth sub-pixel, seventh region, eighth region, and sixth sub-pixel. The fifth region, the first subpixel and the second subpixel, the sixth region, and the fifth subpixel are arranged in a second direction intersecting the first direction, and the seventh region The region, the third sub-pixel, the fourth sub-pixel, the eighth region, and the sixth sub-pixel are arranged in the second direction, and the first sub-pixel has a color different from that of the second sub-pixel. The third sub-pixel has a color different from that of the fourth sub-pixel, and the fifth region includes pixels of the first sub-pixel and the second sub-pixel. The sixth region is a pixel contact region of the fifth sub-pixel, the seventh region is a pixel contact region of the third sub-pixel and the fourth sub-pixel, and The eighth region is a pixel contact region of the sixth sub-pixel, and the lengths of the fifth region, the sixth region, the seventh region, and the eighth region in the second direction are It is characterized by being the same.

  According to the configuration of this application example, the fifth sub-pixel is arranged in the second direction with respect to the first sub-pixel and the second sub-pixel of different colors arranged in the first direction, and is also arranged in the first direction. The sixth sub-pixel is arranged in the second direction with respect to the third sub-pixel and the fourth sub-pixel having different colors. The length in the second direction between the first subpixel, the second subpixel, and the fifth subpixel, and the length in the second direction between the third subpixel, the fourth subpixel, and the sixth subpixel. Since they are the same, it is alleviated that the mixed color state differs depending on the viewing angle in the second direction between the sub-pixels of different colors. That is, it is possible to provide an electro-optical device in which color misregistration due to the viewing angle in the second direction is reduced. In addition, the region between the sub-pixels in the second direction is used as the pixel contact region, so that the sub-pixels of different colors and the other sub-pixels are separated by the pixel contact region, and electrical connection to each sub-pixel is achieved. be able to. In other words, it is not necessary to provide a dedicated configuration for dividing the sub-pixels in the second direction.

In the electro-optical device according to the application example, the lengths of the first region, the second region, the third region, and the fourth region in the first direction and the first region in the first direction. It is preferable that the length in the first direction of the ninth region between the 5 sub-pixels and the sixth sub-pixel is the same.
According to this configuration, it is possible to provide an electro-optical device in which color misregistration due to the viewing angle in the first direction in addition to the second direction is reduced.

In the electro-optical device according to the application example, the first sub-pixel and the third sub-pixel may have the same color, and the other sub-pixels may have a different color from the first sub-pixel.
According to this configuration, it is possible to prevent the occurrence of color misregistration in the direction in which the first subpixel and the third subpixel are adjacent to each other. That is, it is possible to reduce the probability that color misregistration caused by the viewing angle occurs with the arrangement of subpixels.

In the electro-optical device according to the application example, the second sub-pixel and the third sub-pixel may have the same color, and the other sub-pixels may have a different color from the second sub-pixel.
According to this configuration, occurrence of color misregistration in the direction in which the second subpixel and the third subpixel are arranged side by side can be prevented. That is, it is possible to reduce the probability that color misregistration caused by the viewing angle occurs with the arrangement of subpixels.

In the electro-optical device according to the application example described above, the area of the fifth sub-pixel with respect to the area of each of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, The sixth sub-pixel has a large area, and the fifth sub-pixel and the sixth sub-pixel are blue.
According to this configuration, blue has lower visibility than red or green having a longer wavelength than blue. Therefore, even if the blue fifth subpixel and the sixth subpixel are arranged adjacent to the subpixels of other colors, the color shift due to the viewing angle is not noticeable, and the areas of the fifth subpixel and the sixth subpixel are small. By making the area larger than the area of the other sub-pixels, a preferable white balance can be easily realized.

In the electro-optical device according to the application example, the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel have a light emitting element and light from the light emitting element at a predetermined wavelength. The pixel contact region is a non-light emitting region.
According to this configuration, it is possible to provide a self-luminous electro-optical device that can reduce color misregistration due to a viewing angle and can perform color display with good appearance.

In the electro-optical device according to the application example, the light-emitting element and the colored layer are provided over the same substrate.
According to this configuration, it is possible to improve the relative disposition accuracy of the colored layer with respect to the light emitting element as compared with the case where the light emitting element and the colored layer are provided on separate substrates, which results in the viewing angle. It is possible to provide a self-luminous electro-optical device that hardly causes color misregistration.

  [Application Example] The electro-optical device according to this application example includes a plurality of display units arranged in a first direction and a second direction intersecting the first direction, and the display units are at least different colors. The length of the first region in the first direction between the first subpixel and the second subpixel in the display unit that includes one subpixel and the second subpixel and is adjacent in the first direction. Preferably, the first region is a pixel contact region according to one of the first subpixel and the second subpixel.

  According to this application example, in the display units adjacent to each other in the first direction, the lengths in the first direction between the first sub-pixels and the second sub-pixels having different colors are the same. It is alleviated that the state of color mixture differs between the pixels depending on the viewing angle in the first direction. That is, it is possible to provide an electro-optical device in which color misregistration due to the viewing angle in the first direction is reduced. In addition, the first region between the first sub-pixel and the second sub-pixel in the first direction is a pixel contact region, so that the sub-pixels of different colors arranged in the first direction are divided by the pixel contact region. Thus, electrical connection to sub-pixels of different colors can be achieved. In other words, it is not necessary to provide a dedicated configuration for distinguishing between sub-pixels of different colors in the first direction.

In the electro-optical device according to the application example, the display unit includes a third sub-pixel having a color different from that of the first sub-pixel and the second sub-pixel, and the first sub-pixel is arranged in the first direction. And the second sub-pixel are arranged, the third sub-pixel is arranged in the second direction with respect to the first sub-pixel and the second sub-pixel, and the display unit is adjacent in the first direction. The length of the first region in the first direction is the same as the length of the second region between the third sub-pixels in the first direction, and the second region is the third region. A pixel contact region related to the sub-pixel is preferable.
According to this configuration, the third sub-pixels are also arranged at equal intervals in the display units adjacent in the first direction. Therefore, for example, if the first sub-pixel is red, the second sub-pixel is green, and the third sub-pixel is blue, the color shift due to the viewing angle in the first direction is reduced, and the color display has a good appearance. It is possible to provide an electro-optical device capable of satisfying the requirements.

In the electro-optical device according to the application example, in the display units adjacent to each other in the second direction, the first sub-pixel and the third region between the second sub-pixel and the third sub-pixel The lengths in the second direction are preferably the same.
According to this configuration, the third sub-pixels are also arranged at equal intervals with respect to the first sub-pixel and the second sub-pixel having different colors in the display unit adjacent in the second direction. Therefore, the color shift due to the viewing angle in the first direction and the second direction is reduced.

  [Application Example] The electro-optical device according to this application example includes a plurality of display units arranged in a first direction and a second direction intersecting the first direction, and the display units are first colors of different colors. A first sub-pixel, a second sub-pixel, and a third sub-pixel; wherein the first sub-pixel and the second sub-pixel are arranged in the first direction; The third sub-pixels are arranged in the second direction, and the first region of the first region between the first sub-pixel and the second sub-pixel is adjacent to the display unit in the first direction. The length in the direction and the length in the first direction of the second region between the third sub-pixels are the same, and in the adjacent display units in the second direction, the first sub-pixel and the second sub-pixel The second direction of the third region between the sub-pixel and the third sub-pixel A the same length, the third region is preferably a pixel contact area according to any one of the first sub-pixel and the second sub-pixel and the third sub-pixel.

  According to this application example, in the display units adjacent in the first direction, the first sub-pixel, the second sub-pixel, and the third sub-pixel of different colors are arranged at equal intervals in the first direction. Further, in the display units adjacent in the second direction, the first sub-pixel, the second sub-pixel, and the third sub-pixel having different colors are arranged at equal intervals in the second direction. Therefore, it is alleviated that the color mixture state between the sub-pixels of different colors differs depending on the viewing angles in the first direction and the second direction. That is, color misregistration due to viewing angles in the first direction and the second direction is reduced. Further, since the third region between the first subpixel and the second subpixel and the third subpixel is a pixel contact region according to any of these subpixels, the third region is different in the second direction. The color sub-pixels can be divided by the pixel contact region to achieve electrical connection to the different color sub-pixels. In other words, it is not necessary to provide a dedicated configuration for distinguishing between sub-pixels of different colors in the second direction.

[Application Example] An electronic apparatus according to this application example includes the electro-optical device according to the application example described above.
According to this application example, it is possible to provide an electronic device capable of displaying with good appearance with reduced color shift due to the viewing angle.

[Application Example] A head-mounted display according to this application example includes the electro-optical device according to the application example described above, in which at least one of both eyes recognizes a displayed image. To do.
According to this application example, it is possible to provide a head mounted display capable of recognizing a good-looking display in which color shift caused by at least the viewing angle in the first direction is reduced. In particular, by applying the electro-optical device of the present application to both eyes, it is possible to reduce a sense of incongruity due to color misregistration of images recognized by both eyes. A mount display can be provided.

1 is a perspective view illustrating a configuration of an electro-optical device according to a first embodiment. The schematic plan view which shows arrangement | positioning of the display unit (pixel) in a display panel. FIG. 6 is a circuit diagram illustrating a pixel circuit in a sub-pixel. FIG. 3 is a schematic cross-sectional view illustrating the structure of blue (B) and green (G) sub-pixels. FIG. 3 is a schematic cross-sectional view illustrating the structure of green (G) and red (R) sub-pixels. The schematic plan view which shows arrangement | positioning of the electrical structure of the pixel in a wiring layer. The schematic plan view which shows arrangement | positioning of the electrical structure of the pixel in a wiring layer. The schematic plan view which shows arrangement | positioning of the electrical structure of the pixel in a wiring layer. The schematic plan view which shows arrangement | positioning of the electrical structure of the pixel in a wiring layer. The schematic plan view which shows arrangement | positioning of the electrical structure of the pixel in a wiring layer. The schematic plan view which shows arrangement | positioning of the sub pixel and pixel contact area | region in a pixel. The graph which shows the spectral characteristic of the resonance structure in each of the sub pixel of blue (B), green (G), and red (R), and the spectral characteristic of a color filter. Schematic explaining color shift due to viewing angle when sub-pixels of different colors are adjacent in the X direction or Y direction. FIG. 10 is a schematic plan view illustrating an arrangement of sub-pixels and pixel contact regions in the electro-optical device according to the second embodiment. FIG. 10 is a schematic plan view illustrating an arrangement of sub-pixels and pixel contact regions in an electro-optical device according to a third embodiment. FIG. 10 is a schematic plan view illustrating an arrangement of sub-pixels and pixel contact regions in an electro-optical device according to a fourth embodiment. FIG. 10 is a schematic plan view illustrating an arrangement of sub-pixels and pixel contact regions in an electro-optical device according to a fifth embodiment. FIG. 6 is a schematic plan view showing an arrangement of sub-pixels and pixel contact regions of different colors in Comparative Example 1. FIG. 10 is a schematic plan view showing an arrangement of sub-pixels and pixel contact regions of different colors in Comparative Example 2. The graph which shows the viewing angle characteristic of the brightness | luminance of the X direction of an Example and a comparative example. The graph which shows the viewing angle characteristic of the brightness | luminance of the Y direction of an Example and a comparative example. The graph which shows the viewing angle characteristic of the color shift of the X direction of an Example and a comparative example. The graph which shows the viewing angle characteristic of the color shift of the Y direction of an Example and a comparative example. The graph which shows the relationship between the distance from the light emission part of an organic EL element to a colored layer, and color shift. The graph which shows the relationship between the width | variety of a pixel contact area | region, and color shift. Schematic which shows the structure of the head mounted display as an electronic device. The schematic plan view which shows arrangement | positioning of the sub pixel and pixel contact area | region in the pixel of a modification.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described with reference to the drawings. Note that the drawings to be used are appropriately enlarged or reduced so that the part to be described can be recognized.

(First embodiment)
<Electro-optical device>
First, a basic configuration example of the electro-optical device according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing a configuration of an electro-optical device, and FIG. 2 is a schematic plan view showing an arrangement of display units (pixels) in a display panel.

  The electro-optical device 100 according to the present embodiment is a display device capable of color display, and includes a flexible circuit board 102 (hereinafter referred to as an FPC 102) on which a display panel 101 and a driver IC 103 for driving the display panel 101 are mounted in a plane. ) And a frame 105 for storing the display panel 101 and fixing it to a support or the like.

  The FPC 102 is electrically connected to the display panel 101 and has a plurality of external connection terminals 104 for inputting input signals such as image information from an external circuit to the driver IC 103.

  The frame body 105 is provided with a window frame (opening) 105a through which the display on the display panel 101 can be visually recognized.

  As shown in FIG. 2, the display panel 101 has a horizontally long display area 101a, and a plurality of pixels P as display units are arranged in a matrix at a predetermined arrangement pitch in the display area 101a. Although not shown in FIG. 2, the pixel P includes at least sub-pixels SP that can display blue (B), green (G), and red (R). The sub-pixel SP includes an organic electroluminescence (EL) element as a light emitting element and a colored layer that converts light emitted from the organic EL element into light (color light) in a predetermined wavelength region. Although the detailed configuration of the pixel P (sub-pixel SP) will be described later, the row direction in the arrangement of the pixels P is defined as the X direction and the column direction is defined as the Y direction. In the present embodiment, the X direction is an example of the first direction of the present invention, and the Y direction is an example of the second direction that intersects the first direction of the present invention.

  The display panel 101 is a micro display in which the diagonal length of the display area 101a is less than 1 inch (about 25.4 mm), for example. The pixel density in the display area 101a is, for example, 3300 ppi (pixel per inch).

  The self-luminous electro-optical device 100 including such a display panel 101 is preferably used as a display unit of a head-mounted display as an electronic device to be described later, for example.

<Electrical configuration of sub-pixel>
Next, the electrical configuration of the sub-pixel SP in the electro-optical device 100 will be described with reference to FIG. FIG. 3 is a circuit diagram showing a pixel circuit in the sub-pixel.

  As shown in FIG. 3, the pixel circuit 110 in the sub-pixel SP includes four transistors 31, 32, 33, 34, an organic EL element 50, and a storage capacitor 35. In the display area 101a of the display panel 101 shown in FIG. 2, a scanning line 22, a data line 26, and a first control line, which are signal wirings for electrical connection with these components in the pixel circuit 110, are provided. 27, a second control line 28, a first power supply line 41 and a second power supply line 42 are provided.

  The pixel circuit 110 is provided between the first power supply wiring 41 and the second power supply wiring 42. The scanning line 22, the first control line 27, and the second control line 28 are provided to extend in the X direction so as to straddle the plurality of pixel circuits 110 arranged in the X direction. The data line 26 extends in the Y direction so as to straddle the plurality of pixel circuits 110 arranged in the Y direction. A capacitive element 25 is connected in series to the input side of the data line 26.

  The pixel circuit 110 includes a write control transistor 31, a drive transistor 32, a compensation transistor 33, and a light emission control transistor 34. In the present embodiment, these transistors are P-channel transistors, but N-channel transistors can also be used.

  The organic EL element 50 as a light emitting element has a first electrode 51 as an anode, a second electrode 52 as a cathode, and a light emitting functional layer 53 sandwiched between these electrodes. The first electrode 51 is a pixel electrode provided for each pixel circuit 110 (subpixel SP), and is hereinafter referred to as a pixel electrode 51. The second electrode 52 is a common electrode provided in common over the plurality of pixel circuits 110 (sub-pixels SP), and is arranged over the display region 101a shown in FIG. .

  The light emitting functional layer 53 in the organic EL element 50 includes a light emitting layer containing an organic light emitting material. In the present embodiment, white light emission is obtained from the light emitting functional layer 53.

  As shown in FIG. 3, the organic EL element 50 is connected between the first power supply line 41 and the second power supply line 42 via the drive transistor 32 and the light emission control transistor 34. The first power supply wiring 41 is supplied with a high power supply potential Vel. The second power supply wiring 42 is supplied with a lower power supply potential (for example, ground potential) Vct.

  A first power supply line 41 is connected to one (source or drain) of a pair of current ends of the drive transistor 32. One (source or drain) of the pair of current ends of the light emission control transistor 34 is connected to the other (source or drain) of the pair of current ends of the drive transistor 32. The pixel electrode 51 of the organic EL element 50 is connected to the other (source or drain) of the pair of current ends of the light emission control transistor 34. The common electrode 52 of the organic EL element 50 is connected to the second power supply wiring 42.

  The gate of the write control transistor 31 is connected to the scanning line 22, one (source or drain) of the pair of current ends is connected to the data line 26, and the other (source or drain) is connected to the gate of the driving transistor 32. Has been. One capacitor electrode 36 of the pair of capacitor electrodes 36, 37 of the storage capacitor 35 is connected to the first power supply wiring 41, and the other capacitor electrode 37 is connected to the other of the pair of current ends of the write control transistor 31. Has been.

  The gate of the compensation transistor 33 is connected to the first control line 27, one of the pair of current ends (source or drain) is connected to the data line 26, and the other is one of the pair of current ends of the light emission control transistor 34. Connected to (source or drain). A second control line 28 is connected to the gate of the light emission control transistor 34.

  The scanning line 22 is connected to a scanning line driving circuit that supplies a scanning signal. The data line 26 is connected to one end of the capacitive element 25, and the other end of the capacitive element 25 is connected to a data line driving circuit that supplies a data signal based on the image signal. Therefore, the data signal is supplied to the capacitive element 25, and a potential corresponding to the data signal is supplied to the data line 26.

  In this embodiment, the horizontal scanning period has a compensation period and a writing period, and the scanning line driving circuit supplies a scanning signal to the scanning line 22 so that each of the plurality of scanning lines 22 is in the horizontal scanning period. Select in turn. The write control transistor 31 of the pixel circuit 110 corresponding to the scanning line 22 selected by the scanning line driving circuit is turned on. Therefore, the driving transistor 32 of the pixel circuit 110 is also turned on. Further, the scanning line driving circuit supplies a control signal to the first control line 27 to sequentially select each of the plurality of first control lines 27 for each compensation period. The compensation transistor 33 of the pixel circuit 110 corresponding to the first control line 27 selected by the scanning line driving circuit is turned on. The storage capacitor 35 holds the threshold voltage | Vth | of the drive transistor 32 until the end of the compensation period in which the compensation transistor 33 is turned off. When the scanning line driving circuit supplies a control signal to the first control line 27 to control the compensation transistor 33 of the pixel circuit 110 to the OFF state, the path from the data line 26 to the gate electrode of the driving transistor 32 is in a floating state. become. On the other hand, the gate potential of the driving transistor 32 is maintained at a potential of (Vel− | Vth |) by the storage capacitor 35. Next, in the data line driving circuit, a gradation potential (data signal) corresponding to a gradation specified for each pixel circuit 110 by an image signal supplied from an external circuit is parallel to the capacitor 25 for each writing period. To supply. The level of the grayscale potential is shifted using the capacitor 25, and the potential is supplied to the gate of the drive transistor 32 of the pixel circuit 110 via the data line 26 and the write control transistor 31. The holding capacitor 35 holds a voltage corresponding to the gradation potential while compensating for the threshold voltage | Vth | of the driving transistor 32. On the other hand, when the selection of the scanning line 22 in the writing period is completed, the scanning line driving circuit supplies a control signal to the second control line 28 to thereby control the light emission of the pixel circuit 110 corresponding to the second control line 28. The transistor 34 is controlled to be on. Accordingly, a driving current corresponding to the voltage held in the holding capacitor 35 in the immediately preceding writing period is supplied from the driving transistor 32 to the organic EL element 50 via the light emission control transistor 34. The organic EL element 50 emits light with a luminance corresponding to the amount of the drive current. In this way, the organic EL element 50 emits light at a luminance corresponding to the gradation potential, whereby an arbitrary image designated by the image signal is displayed. Since the drive current supplied from the drive transistor 32 to the organic EL element 50 is offset by the influence of the threshold voltage, even if the threshold voltage of the drive transistor 32 varies for each pixel circuit 110, the variation is compensated. The In addition, since the drive current corresponding to the gradation level is supplied to the organic EL element 50, it is possible to suppress the occurrence of display unevenness that impairs the uniformity of the display screen. As a result, high-quality display is possible.

  Note that the pixel circuit 110 is not limited to the configuration including the four transistors 31, 32, 33, and 34. For example, if the variation in the threshold voltage of the driving transistor 32 for each pixel circuit 110 is small, the compensation transistor 33 is eliminated. It is good also as a structure. Further, the configuration of the signal wiring is not limited to this. For example, the scanning line 22 is different from the first control line 27, but the scanning line 22 and the first control line 27 may be a single wiring.

<Pixel structure>
Next, the structure of the pixel P (sub-pixel SP) will be described with reference to FIGS. 4 and 5 are schematic sectional views showing the structure of the sub-pixel. 4 is a schematic cross-sectional view showing the structure of blue (B) and green (G) sub-pixels SP, and FIG. 5 is a schematic cross-sectional view showing the structure of green (G) and red (R) sub-pixels SP. is there. More specifically, FIG. 4 straddles four transistors 32, 31, 33, and 34 arranged in the Y direction in the sub pixel arrangement shown in FIG. 10 to be described later, and each of the blue (B) and green (G) subs. It is a schematic sectional drawing along the HH 'line straddling a pixel. FIG. 5 also extends over three transistors 33 arranged in the X direction in the arrangement of subpixels shown in FIG. 10 and along the line AA ′ across green (G) and red (R) subpixels. FIG. Note that the display panel 101 of the present embodiment includes an organic EL element 50 as a light emitting element and a colored layer 71 formed for each subpixel SP on the same substrate.

  As shown in FIGS. 4 and 5, in the present embodiment, each of the four transistors 31, 32, 33, and 34 constituting the pixel circuit 110 is a substrate, for example, one of the semiconductor substrates 10 such as silicon. An active region 10A formed by implanting impurity ions on the surface is provided. That is, the four transistors 31, 32, 33, and 34 are MOSFETs (Metal-Oxide-Semiconductor-Field-Effect-Transistor). Note that the active region 10A includes a region that functions as a source or drain by implanting impurity ions at a high concentration, and a region that functions as a gate without implanting impurity ions at a low concentration. However, in FIG. 4 and FIG. 5, they are collectively displayed for convenience.

  A gate insulating film 11 is formed on the semiconductor substrate 10 so as to cover the active region 10A. On the gate insulating film 11, a gate electrode is formed in a portion of the active region 10A facing the region functioning as a gate. 4, the gate electrode 32g of the driving transistor 32, the gate electrode 33g of the compensation transistor 33, and the gate electrode 34g of the light emission control transistor 34 are shown. Of course, a gate electrode is similarly formed in the write control transistor 31. A first interlayer insulating film 12 is formed to cover these gate electrodes. In addition, a through-hole that penetrates through the first interlayer insulating film 12 and the gate insulating film 11 to reach a region that functions as the source or drain of the write control transistor 31, for example, is provided. In addition, a through hole penetrating the first interlayer insulating film 12 and reaching, for example, the gate electrode 32 g of the driving transistor 32 is provided. By forming and patterning a conductive film so as to cover these through holes, for example, the contact hole CH1 in contact with the region functioning as the source or drain of the write control transistor 31 and the gate electrode 32g of the drive transistor 32 are formed. A contact hole CH2 in contact therewith is formed. In addition, a wiring 21A that connects the contact hole CH1 and the contact hole CH2 is formed. That is, a wiring 21A that connects the source or drain of the write control transistor 31 and the gate of the drive transistor 32 is formed. On the first interlayer insulating film 12, not only the wiring 21 </ b> A but also a wiring 21 </ b> D for connection with other transistors is formed in the same manner. Although not shown in FIG. 4, the wiring 21 </ b> D is connected to the other of the pair of current ends of the light emission control transistor 34.

  A second interlayer insulating film 13 is formed to cover these wiring 21A, wiring 21D and the like. Further, a through-hole is formed through the second interlayer insulating film 13 to reach the wiring 21D, for example, and a conductive film is formed and patterned so as to cover the through-hole, so that the contact hole CH3 is interposed. A relay layer 29B connected to the wiring 21D is formed. Further, by patterning the conductive film in the same manner as the relay layer 29B, the scanning line 22, the first control line 27, the second control line 28, and the first power supply line 41 are formed.

  A third interlayer insulating film 14 is formed to cover the scanning line 22, the first control line 27, the second control line 28, the first power supply wiring 41, the relay layer 29B, and the like. In addition, a through hole is formed through the third interlayer insulating film 14 to reach the relay layer 29B, for example, and a conductive film is formed and patterned so as to cover the through hole, so that the contact hole CH4 is interposed. Thus, the relay wiring 43B connected to the relay layer 29B is formed.

  A fourth interlayer insulating film 15 is formed to cover the relay wiring 43B and the like. Further, a through hole is formed through the fourth interlayer insulating film 15 to reach the relay wiring 43B, for example, and a light-reflective conductive film is formed and patterned so as to cover the through hole. Reflective layers 45B and 45G corresponding to the blue (B) and green (G) sub-pixels SP are formed. For example, the reflective layer 45G is connected to the relay wiring 43B through the contact hole CH5 provided in the fourth interlayer insulating film 15. Further, as shown in FIG. 5, the reflective layer 45R corresponding to the red (R) sub-pixel SP is formed in the same manner. In the following description, the reflective layers 45B, 45G, and 45R formed on the same wiring layer may be collectively referred to as the reflective layer 45 in some cases.

  As shown in FIG. 4, the first insulating layer 16 a is formed so as to cover the reflective layer 45. In the blue (B) sub-pixel SP, the second insulating layer 16b is formed by patterning on the first insulating layer 16a. Then, the pixel electrode 51B is formed by patterning on the second insulating layer 16b. In the green (G) sub-pixel SP, the second insulating layer 16b and the fourth insulating layer 16d are formed by patterning on the first insulating layer 16a. Then, the pixel electrode 51G is formed by patterning on the fourth insulating layer 16d. As shown in FIG. 5, in the red (R) sub-pixel SP, the second insulating layer 16b, the third insulating layer 16c, and the fourth insulating layer 16d are respectively formed on the first insulating layer 16a by patterning. . Then, the pixel electrode 51R is formed by patterning on the fourth insulating layer 16d. That is, the third insulating layer 16c is formed corresponding to the red (R) subpixel SP, and the fourth insulating layer 16d is formed corresponding to the green (G) and red (R) subpixels SP. The

  As shown in FIG. 4, the 5th insulating layer 17 for ensuring the insulation between the pixel electrodes 51B and 51G is formed. The fifth insulating layer 17 is formed so as to cover the outer edges of the pixel electrodes 51B and 51G and to have openings on the pixel electrodes 51B and 51G. The opening defines the light emitting region in the blue (B) and green (G) sub-pixels SP. As shown in FIG. 5, the fifth insulating layer 17 is formed by patterning so as to cover the outer edge portion of the pixel electrode 51 </ b> R even in the red (R) sub-pixel SP, and the opening that defines the light emitting region by the fifth insulating layer 17. Is formed.

  A light emitting functional layer 53 is formed so as to cover each pixel electrode 51B, 51G and the fifth insulating layer 17, and a conductive film having both light transmittance and light reflecting property is formed so as to cover the light emitting functional layer 53. A common electrode 52 is formed. Thus, a top emission type organic EL element 50 is formed for each of the blue (B) and green (G) subpixels SP. As shown in FIG. 5, the top emission type organic EL element 50 is similarly formed in the red (R) sub-pixel SP.

  As the transparent conductive film constituting the pixel electrodes 51B, 51G, 51R, for example, an ITO (Indium-Tin-Oxide) film having a work function considering the injectability of holes into the light emitting functional layer 53 is used. For example, an alloy of Mg and Ag is used for the common electrode 52, which has both light transmittance and light reflectivity. Note that a metal thin film such as Li, Mg, or Ca having a work function in consideration of the electron injection property to the light emitting functional layer 53 may be provided between the light emitting functional layer 53 and the common electrode 52.

  The light emitting functional layer 53 includes a light emitting layer capable of obtaining white light emission as described above, but in this embodiment, an optical resonant structure is provided for each subpixel SP of blue (B), green (G), and red (R). By adopting, a top emission structure in which light in a specific wavelength region corresponding to each color can be extracted from the organic EL element 50 is obtained. The optical resonant structure has different optical distances between the reflective layer 45 and the common electrode 52 for each of the blue (B), green (G), and red (R) subpixels SP. Resonant wavelength light is emitted from the organic EL element 50. In the present embodiment, an optical resonance structure is adopted in which the optical distance is varied by varying the layer configuration of the insulating layer between the reflective layer 45 and the pixel electrode 51. Specifically, since the resonance wavelengths of green and red are longer than blue, the first insulating layer 16a and the second insulating layer 16b exist between the reflective layer 45B and the pixel electrode 51B. The first insulating layer 16a, the second insulating layer 16b, and the fourth insulating layer 16d exist between the reflective layer 45G and the pixel electrode 51G. Further, as shown in FIG. 5, the first insulating layer 16a, the second insulating layer 16b, the third insulating layer 16c, and the fourth insulating layer 16d exist between the reflective layer 45R and the pixel electrode 51R. . Thus, if the light emitting functional layer 53 having a uniform film thickness is formed so as to cover the pixel electrodes 51B, 51G, 51R, the optical layer between the reflective layer 45B and the common electrode 52 in the blue (B) subpixel SP. The shortest distance becomes the smallest, and the optical distance between the reflective layer 45R and the common electrode 52 in the red (R) subpixel SP becomes the largest. Note that such an optical resonant structure is not limited to changing the layer configuration of the insulating layer between the reflective layers 45B, 45G, and 45R and the pixel electrodes 51B, 51G, and 51R, and the reflective layer 45 and the pixel electrode 51 are not limited. The film thickness of the pixel electrodes 51B, 51G, and 51R is made different for each of the blue (B), green (G), and red (R) sub-pixels SP. It is good also as a structure which changes various distances. Hereinafter, the organic EL elements 50 provided in the blue (B), green (G), and red (R) subpixels SP having an optical resonance structure are referred to as organic EL elements 50B, 50G, and 50R.

  Next, as shown in FIGS. 4 and 5, a sealing layer 60 is formed so as to cover the common electrode 52. The sealing layer 60 protects moisture and oxygen from entering the organic EL elements 50B, 50G, and 50R. In addition, since the color filter 70 is formed on the sealing layer 60 thereafter, the sealing layer 60 is configured in consideration of flattening. Specifically, the sealing layer 60 is formed by laminating a first inorganic sealing film 61, an organic sealing film 62, and a second inorganic sealing film 63 in this order. As the first inorganic sealing film 61 and the second inorganic sealing film 63, for example, a silicon oxide film, a nitride film, or an oxynitride film is used which does not easily transmit gas such as moisture and oxygen. The organic sealing film 62 is made of, for example, an acrylic transparent resin that can be flattened by being applied to a surface having unevenness by using a spin coating method, a printing method, or the like.

  A color filter 70 is formed on the sealing layer 60. The color filter 70 includes colored layers 71B, 71G, and 71R corresponding to blue (B), green (G), and red (R) subpixels SP. Examples of a method for forming such a color filter 70 include a photolithography method in which the colored layers 71B, 71G, and 71R are sequentially formed by applying a photosensitive resin containing a color material, exposing and developing the photosensitive resin. The order of forming the colored layers 71B, 71G, 71R is not limited to the order of blue (B), green (G), and red (R). In order to obtain desired optical characteristics, the thicknesses of the colored layers 71B, 71G, and 71R may be different for each color. Hereinafter, the colored layers 71B, 71G, and 71R may be collectively referred to as the colored layer 71.

  As described above, the organic EL elements 50B, 50G, and 50R, the sealing layer 60, and the color filter 70 are formed on the semiconductor substrate 10 including the pixel circuit 110 including the four transistors 31, 32, 33, and 34. A transparent counter substrate 90 is bonded to the semiconductor substrate 10 on which these components are formed via a transparent adhesive layer 80, and the display panel 101 is completed. The counter substrate 90 functions as a protective substrate that protects the organic EL elements 50B, 50G, and 50R, the color filter 70, and the like formed on the semiconductor substrate 10.

  Next, the structure of the pixel contact region will be described with reference to FIGS. In the present invention, the pixel contact region refers to the connection between the reflective layer 45 that functions as an electrical relay wiring and the pixel electrode 51 in each of the blue (B), green (G), and red (R) subpixels SP. It refers to a region where a contact hole is formed or a non-light emitting region including a contact hole.

  As shown in FIG. 4, in the green (G) sub-pixel SP of the present embodiment, the relay wiring 43 </ b> B formed on the third interlayer insulating film 14 has a contact hole CH <b> 5 penetrating the fourth interlayer insulating film 15. To the reflective layer 45G. As shown in FIG. 5, the reflective layer 45G is connected to the pixel electrode 51G via a contact hole CH10 that penetrates the first insulating layer 16a, the second insulating layer 16b, and the fourth insulating layer 16d. Since the organic EL element 50G is a top emission type, the contact hole CH5 provided in the lower layer of the reflective layer 45G does not affect the light emission from the organic EL element 50G, so the wiring of the relay wiring 43B and the contact hole CH5 The determination of the position in the layer has a certain degree of freedom. On the other hand, the position of the contact hole CH10 provided on the reflective layer 45G in the wiring layer affects the light emission from the organic EL element 50G, and thus the opening of the fifth insulating layer 17 that defines the light emitting region described above. It is provided at a position that does not overlap the part. That is, the portion of the pixel electrode 51G that overlaps with the contact hole CH10 is covered with the fifth insulating layer 17 and is electrically insulated from the light emitting functional layer 53, so that the region overlapping with the contact hole CH10 does not emit light. It becomes an area. In addition, the contact hole CH5 and the contact hole CH10 are provided at different positions. That is, the portion of the fifth insulating layer 17 formed so as to overlap the contact hole CH10 in plan view is a pixel contact region related to the green (G) subpixel SP.

  Further, as shown in FIG. 5, in the red (R) sub-pixel SP, the reflective layer 45R penetrates the first insulating layer 16a, the second insulating layer 16b, the third insulating layer 16c, and the fourth insulating layer 16d. It is connected to the pixel electrode 51R through the contact hole CH9. Since the organic EL element 50R is also a top emission type, the position of the contact hole CH9 provided on the reflective layer 45R in the wiring layer affects the light emission from the organic EL element 50R. Similar to the sub-pixel SP, it is provided at a position that does not overlap with the opening of the fifth insulating layer 17 that defines the light-emitting region. That is, the portion of the pixel electrode 51R that overlaps with the contact hole CH9 is covered with the fifth insulating layer 17, and is electrically insulated from the light emitting functional layer 53. Therefore, the region that overlaps with the contact hole CH9 does not emit light. It becomes an area. That is, the portion of the fifth insulating layer 17 formed so as to overlap the contact hole CH9 in plan view is a pixel contact region related to the red (R) subpixel SP. Although not shown in FIGS. 4 and 5, in the blue (B) sub-pixel SP, the reflective layer 45B is connected via a contact hole CH11 penetrating the first insulating layer 16a and the second insulating layer 16b. It is connected to the pixel electrode 51B. The contact hole CH11 is also covered with the fifth insulating layer 17. That is, the portion of the fifth insulating layer 17 formed so as to overlap with the contact hole CH11 in plan view is a pixel contact region related to the blue (B) subpixel SP.

  In the present embodiment, from the viewpoint of forming the contact holes CH9, CH10, and CH11 by penetrating a plurality of insulating layers, as shown in FIG. 5, a hole that penetrates the first insulating layer 16a and the second insulating layer 16b. To form a relay portion connected to the reflective layer 45. Thereafter, the fourth insulating layer 16d is patterned so as not to cover the relay portion in the green (G) subpixel SP. In the red (R) subpixel SP, the third insulating layer 16c and the fourth insulating layer 16d are formed by patterning so as not to cover the relay portion. Then, a transparent conductive film is formed and patterned so as to be in contact with the relay portion of each subpixel SP, thereby forming the pixel electrodes 51B, 51G, 51R, and the contact holes CH9, CH10, CH11 is formed. In other words, in order to electrically connect the reflective layer 45 and the pixel electrode 51, by forming a relay portion in advance, the distance for electrical connection is shortened, and the contact holes CH9, CH10, and CH11 can be easily formed. Can be formed.

  In FIG. 5, the compensation transistor 33 in which the gate electrode 33 g is connected to the first control line 27 is illustrated. As described above, the active region 10A in the semiconductor substrate 10 is provided with the drain region 33d and the source region 33s.

  In the present embodiment, the four transistors 31, 32, 33, and 34 in the pixel circuit 110 are configured by MOSFETs. However, the present invention is not limited to this. For example, TFTs (Thin-Film-Transistors) may be used.

<Disposition of electrical configuration of pixels>
Next, with reference to FIGS. 6 to 10, the arrangement of the electrical configuration of the pixels in each wiring layer on the semiconductor substrate 10 will be described. 6 to 10 are schematic plan views showing the arrangement of the electrical configuration of the pixels in the wiring layer. Specifically, FIG. 6 shows the arrangement of the four transistors 31, 32, 33, and 34, and FIG. 7 shows the arrangement of the scanning line 22, the first control line 27, the second control line 28, and the first power supply line 41. 8 shows the arrangement of the data line 26 and the relay wiring, FIG. 9 shows the arrangement of the reflective layers 45B, 45G, and 45R, and FIG. 10 shows the arrangement of the pixel electrodes 51B, 51G, and 51R and the pixel contact region. It is.

  First, the arrangement of the four transistors 31, 32, 33, and 34 in the semiconductor substrate 10 and the wirings related to the sources or drains of these transistors 31, 32, 33, and 34 will be described with reference to FIG. Note that the reference numeral of the pixel circuit related to the blue (B) sub-pixel SP is 110B. Similarly, the code of the pixel circuit related to the green (G) subpixel SP is 110G, and the code of the pixel circuit related to the red (R) subpixel SP is 110R.

  As shown in FIG. 6, in the pixel P, the four transistors 31, 32, 33, and 34 included in the pixel circuit 110 are arranged such that a pair of current ends are along the X direction. Further, the light emission control transistor 34, the compensation transistor 33, the write control transistor 31, and the drive transistor 32 are arranged in the Y direction in this order. The pixel circuit 110G, the pixel circuit 110B, and the pixel circuit 110R are arranged in parallel in the X direction in this order with the arrangement of the four transistors 31, 32, 33, and 34 of the pixel circuit 110 as one unit.

  The four transistors 31, 32, 33, and 34 are arranged to face the active region between a pair of current ends, and have gate electrodes 31g, 32g, 33g, and 34g provided in an island shape, respectively. . The gate electrodes 31g, 32g, 33g, and 34g are provided in the same wiring layer.

  Here, one of the pair of current ends (source or drain) of each of the transistors 31, 32, 33, and 34 is called a source region, and the other is called a drain region. In the write control transistor 31, the drive transistor 32, and the compensation transistor 33, the drain region of the pair of current ends is located on the left side of the gate electrode in the X direction, and the source region is located on the right side of the gate electrode in the X direction. . On the other hand, of the pair of current ends of the light emission control transistor 34, the drain region is located on the right side of the gate electrode in the X direction, and the source region is located on the left side of the gate electrode in the X direction.

  The drain region 31d of the write control transistor 31 and the gate electrode 32g of the drive transistor 32 are connected by a wiring 21A extending in the Y direction. The drain region 32d of the drive transistor 32, the drain region 33d of the compensation transistor 33, and the source region 34s of the light emission control transistor 34 are connected by a wiring 21B extending in the Y direction. The source region 31s of the write control transistor 31 and the source region 33s of the compensation transistor 33 are connected by a wiring 21C extending in the Y direction. A contact hole 21s for connecting to a relay layer 29A described later is disposed at an intermediate point of the wiring 21C extending in the Y direction. One end of a wiring 21D bent so as to extend in the X direction and the Y direction is connected to the drain region 34d of the light emission control transistor 34, and the other end of the wiring 21D is connected to a relay layer 29B described later. A contact hole CH3 for connection is arranged. The wirings 21A, 21B, and 21C are provided in the same wiring layer above the gate electrodes 31g, 32g, 33g, and 34g.

  As shown in FIG. 7, the scanning line 22 extends in the X direction so as to overlap the write control transistor 31 of the pixel circuits 110G, 110B, and 110R, and the gate electrode 31g of the write control transistor 31 via the contact hole. Connected with. The first control line 27 extends in the X direction so as to overlap with the compensation transistors 33 of the pixel circuits 110G, 110B, and 110R, and is connected to the gate electrode 33g of the compensation transistor 33 through a contact hole. The second control line 28 extends in the X direction so as to overlap the light emission control transistors 34 of the pixel circuits 110G, 110B, and 110R, and is connected to the gate electrode 34g of the light emission control transistor 34 through a contact hole. The first power supply line 41 extends in the X direction so as to overlap the drive transistor 32 of the pixel circuits 110G, 110B, and 110R, and is connected to the source region of the drive transistor 32 through a contact hole.

  Between the scanning line 22 and the first control line 27, the contact hole 21 s provided at an intermediate point of the wiring 21 C connecting the source region 31 s of the write control transistor 31 and the source region 33 s of the compensation transistor 33. A relay layer 29A to be connected is provided. In the relay layer 29A, a contact hole CH8 for connecting to a data line 26 described later is disposed.

  A relay layer 29 </ b> B is provided at the other end of the wiring 21 </ b> D connected to the drain region of the light emission control transistor 34. In the relay layer 29B, a contact hole CH4 for connecting to a relay wiring described later is disposed. That is, the lower layer contact hole CH3 and the upper layer contact hole CH4 are provided at the same position in plan view with the relay layer 29B interposed therebetween (see FIG. 4).

  The scanning line 22, the first control line 27, the second control line 28, the first power supply wiring 41, the relay layer 29A, and the relay layer 29B are provided in the same wiring layer.

  As shown in FIG. 8, data lines 26 extending in the Y direction are provided corresponding to the pixel circuits 110G, 110B, and 110R. The data line 26 is electrically connected to the wiring 21C through the contact hole CH8, the relay layer 29A and the contact hole 21s described above.

  In the pixel circuit 110G and the pixel circuit 110R, a relay wiring 43B extending in the Y direction is provided. One end of the relay wiring 43B is connected to the lower layer contact hole CH4. Contact holes CH5 and CH6 connected to reflective layers 45G and 45R described later are disposed at the other end of the relay wiring 43B. Also in the pixel circuit 110B, a relay wiring 43C extending in the Y direction is provided. In the Y direction, the relay wiring 43C is longer than the relay wiring 43B, and one end of the relay wiring 43C is connected to the lower contact hole CH4. A contact hole CH7 connected to a reflective layer 45B described later is disposed at the other end of the relay wiring 43C. The data line 26 and the relay wirings 43B and 43C are provided in the same wiring layer.

  As shown in FIG. 9, the reflective layer 45G corresponding to the green (G) subpixel SP and the reflective layer 45R corresponding to the red (R) subpixel SP are arranged side by side in the X direction. The reflective layer 45G and the reflective layer 45R are rectangles having the same size. A similarly rectangular reflective layer 45B is arranged in the Y direction with respect to the reflective layers 45G and 45R. The size of the reflective layer 45B is approximately twice the size of the reflective layer 45G. The reflection layers 45B, 45G, and 45R are provided on the same wiring layer and are provided electrically independently. The reflective layer 45G is connected to the contact hole CH5 provided in the lower layer, the reflective layer 45R is connected to the contact hole CH6 provided in the lower layer, and the reflective layer 45B is connected to the contact hole CH7 provided in the lower layer.

  As shown in FIG. 10, the pixel electrode 51B is disposed so as to overlap the reflective layer 45B in plan view. The pixel electrode 51B has a rectangular outer shape, and the contact hole CH11 for electrical connection between the reflective layer 45B and the pixel electrode 51B is disposed so as to overlap one end side in the X direction of the reflective layer 45B. At the same time, it is arranged so as to overlap the short side portion of the pixel electrode 51B. The pixel electrode 51G is disposed so as to overlap the reflective layer 45G in plan view. The pixel electrode 51G has a rectangular outer shape, and the contact hole CH10 for electrical connection between the reflective layer 45G and the pixel electrode 51G is disposed so as to overlap one end side in the X direction of the reflective layer 45G. At the same time, the pixel electrode 51G is disposed so as to overlap the short side portion. Similarly, the pixel electrode 51R is disposed so as to overlap the reflective layer 45R in plan view. The pixel electrode 51R has a rectangular outer shape, and the contact hole CH9 for electrical connection between the reflective layer 45R and the pixel electrode 51R is disposed so as to overlap one end side in the X direction of the reflective layer 45R. At the same time, it is arranged so as to overlap the short side portion of the pixel electrode 51R. A region in which these contact holes CH9, CH10, and CH11 are provided is referred to as a pixel contact region.

  As described above, since the pixel electrodes 51B, 51G, and 51R formed using a transparent conductive film such as ITO have a higher resistance than the scanning lines 22 and the relay wirings 43B, the reflective layers 45B, 45G, The contact holes CH9, CH10, and CH11 for electrical connection with 45R are formed larger in plan view than the contact holes related to other wirings.

  As described above, in the pixel circuits 110B, 110G, and 110R, the four transistors 31, 32, 33, and 34 except for the organic EL elements 50B, 50G, and 50R and the signal wirings connected thereto are formed as the reflective layer 45B, It is formed in a lower layer than 45G and 45R. Since the arrangement of the structure provided below the reflective layers 45B, 45G, and 45R does not affect the light emission of the upper organic EL elements 50B, 50G, and 50R, it has a degree of freedom in arrangement. That is, the pixel circuit 110 can be relatively freely arranged according to the arrangement of the reflective layer 45 and the pixel electrode 51.

  A fifth insulating layer 17 that defines a light emitting region (opening) on each of the pixel electrodes 51B, 51G, and 51R is provided so as to cover the contact holes CH9, CH10, and CH11 (see FIG. 5). Therefore, portions of the pixel electrodes 51B, 51G, 51R that overlap with the contact holes CH9, CH10, CH11 are insulated by the fifth insulating layer 17 and do not contact the light emitting functional layer 53. That is, the pixel contact region is a non-light emitting region.

  In the blue (B), green (G), and red (R) sub-pixels SP, the pixel contact region that is a non-light emitting region is preferably as small as possible from the viewpoint of ensuring luminance. On the other hand, if the pixel contact region is too small, the connection resistance between the reflective layer 45 and the pixel electrode 51 is reduced, leading to a resistance loss of the drive current of the organic EL element 50. In addition, the arrangement of the pixel contact region also affects the optical characteristics of the pixel P. Hereinafter, the relationship between the configuration of the sub-pixel SP and the optical characteristics in the present embodiment will be described with reference to FIGS.

<Arrangement of sub-pixel and pixel contact region>
FIG. 11 is a schematic plan view showing the arrangement of sub-pixels and pixel contact regions in a pixel. In the following description, for the purpose of identifying the blue (B), green (G), and red (R) sub-pixels SP, the codes of the pixel circuits 110B, 110G, and 110R are used, and the blue (B) sub-pixels are used. The pixel is denoted by reference numeral 110B, the green (G) sub-pixel is denoted by reference numeral 110G, and the red (R) sub-pixel is denoted by reference numeral 110R. In addition, the regions represented on the drawing as the sub-pixels 110B, 110G, and 110R each indicate a light emitting region. Furthermore, pixel contact regions related to the sub-pixels 110B, 110G, and 110R are represented by using reference numerals of the contact holes CH9, CH10, and CH11. That is, the pixel contact region of the sub-pixel 110R is given the code CH9, the pixel contact region of the sub-pixel 110G is given the code CH10, and the pixel contact region of the sub-pixel 110B is given the code CH11. To do.

  As shown in FIG. 11, the pixel P1 as the pixel P includes a sub-pixel 110G, a pixel contact region CH10, a sub-pixel 110R, and a pixel contact region CH9 arranged in the X direction. In addition, the pixel P1 includes subpixels 110B arranged in the Y direction with respect to the subpixel 110G and the subpixel 110R. The pixel contact region CH11 of the subpixel 110B is aligned in the X direction with respect to the subpixel 110B, and is aligned in the Y direction with respect to the pixel contact region CH9 of the subpixel 110R.

  Similar to the pixel P1, the pixel P2 as the pixel P adjacent to the pixel P1 in the X direction includes a sub pixel 110G, a pixel contact region CH10, a sub pixel 110R, and a pixel contact region CH9 arranged in the X direction. Further, the pixel P2 has sub-pixels 110B arranged in the Y direction with respect to the sub-pixel 110G and the sub-pixel 110R. The pixel contact region CH11 of the subpixel 110B is aligned in the X direction with respect to the subpixel 110B, and is aligned in the Y direction with respect to the pixel contact region CH9 of the subpixel 110R.

  That is, in the pixel P1 and the pixel P2 adjacent in the X direction, the sub pixel 110G, the pixel contact region CH10, the sub pixel 110R, and the pixel contact region CH9 are repeatedly arranged in this order in the X direction. Similarly, the sub-pixel 110B and the pixel contact region CH11 are repeatedly arranged in this order in the X direction. There is no pixel contact region between the sub-pixel 110B, the sub-pixel 110G, and the sub-pixel 110R arranged in the Y direction. As described above, the pixel contact region is a non-light emitting region. Further, as described with reference to FIGS. 4 and 5, the opening is defined as the light emitting region by the fifth insulating layer 17 that forms the opening on the pixel electrodes 51B, 51G, and 51R. Each of the sub-pixels 110B, 110G, and 110R shown in FIG.

  In the present embodiment, in the pixel P1, the sub pixel 110G is an example of the first sub pixel of the present invention, and the sub pixel 110R is an example of the second sub pixel of the present invention. In the pixel P2 adjacent to the pixel P1 in the X direction, the sub pixel 110G is an example of the third sub pixel of the present invention, and the sub pixel 110R is an example of the fourth sub pixel of the present invention. In addition, among the pixels P1 and P2 adjacent in the X direction, the subpixel 110B on the pixel P1 side is an example of the fifth subpixel of the present invention, and the subpixel 110B on the pixel P2 side is the sixth subpixel of the present invention. It is an example. Therefore, the pixel contact region CH10 in the pixel P1 is an example of the first region of the present invention, and the pixel contact region CH9 is an example of the second region of the present invention. The pixel contact region CH10 in the pixel P2 is an example of the third region of the present invention, and the pixel contact region CH9 is an example of the fourth region of the present invention. Further, the pixel contact region CH11 in the pixel P1 is an example of a fifth region, and the pixel contact region CH11 in the pixel P2 is an example of a sixth region.

  Here, the length of the light emitting region of the sub-pixel 110G in the X direction and the length of the light emitting region of the sub-pixel 110R are the same as the width d1, and the length of the light-emitting region of the sub-pixel 110G in the Y-direction and the light emission of the sub-pixel 110R. The length of the region is the same and the width is d2. The length of the light emitting region of the subpixel 110B in the X direction is defined as a width d3, and the length of the light emitting region of the subpixel 110B in the Y direction is defined as a width d4. The width d2 and the width d4 may be the same length or different lengths. The length of the pixel contact region CH9 and the length of the pixel contact region CH10 in the X direction are the same as the interval d5, and the length of the pixel contact region CH11 in the X direction is the interval d7. The distance d5 and the distance d7 have the same length in this case, but can be different lengths. The lengths of the pixel contact regions CH9 and CH10 in the Y direction are the same as the lengths of the light emitting regions of the subpixels 110G and 110R in the Y direction and have a width d2. The length of the pixel contact region CH11 in the Y direction is the same as the length of the light emitting region of the sub-pixel 110B in the Y direction and has a width d4. The length between the sub pixel 110B, the sub pixel 110G, and the sub pixel 110R adjacent to each other in the Y direction in the pixel P is a distance d6, and the sub pixel of the pixel P adjacent to the sub pixel 110B of the pixel P in the Y direction. A distance between 110G and the sub-pixel 110R is defined as an interval d8. The interval d6 and the interval d8 may have the same length or different lengths.

That is, in this embodiment, in the pixel P1 and the pixel P2 that are adjacent to each other in the X direction as the first direction, the sub pixel 110G as the first sub pixel and the pixel contact region CH10 as the first region are arranged in the X direction. , A sub-pixel 110R as the second sub-pixel, a pixel contact region CH9 as the second region, a sub-pixel 110G as the third sub-pixel, a pixel contact region CH10 as the third region, a sub-pixel as the fourth sub-pixel The pixel 110R has a pixel contact region CH9 as a fourth region. The sub pixel 110G and the sub pixel 110R have different colors. The distance d5 which is the length in the X direction as the first direction of the pixel contact regions CH9 and CH10 in the pixel P1 and the pixel P2 is the same.
Further, the sub-pixel 110B as the fifth sub-pixel, the pixel contact region CH11 as the fifth region, the sub-pixel 110B as the sixth sub-pixel, and the sixth region as a sixth region, which are arranged in the X direction as the first direction. It further has a pixel contact region CH11. The sub-pixel 110B is arranged in the Y direction as the second direction with respect to the sub-pixel 110G and the sub-pixel 110R, and the interval d7 that is the length of the pixel contact region CH11 in the pixel P1 and the pixel P2 is the same.

  In the present embodiment, the distance d6 that is the length between the sub-pixel 110B and the sub-pixel 110G and the sub-pixel 110R in the pixel P is an example of the seventh region and the eighth region of the present invention. Further, the pixel contact region CH11 related to the sub-pixel 110B is an example of a ninth region of the present invention. Note that the sub-pixel 110B is also treated as the third sub-pixel in another application example of the present invention.

  In the present embodiment, the area of the subpixel 110G and the area of the subpixel 110R are the same. Further, the area of the sub-pixel 110B is approximately doubled with respect to the area of the sub-pixel 110G. This is because the emission lifetime of the organic EL element 50B of the subpixel 110B is shorter than the emission lifetime of the organic EL element 50G of the subpixel 110G (or the organic EL element 50R of the subpixel 110R). The light emission luminance depends on the amount of current flowing through the organic EL element 50 and the light emission area, and the light emission lifetime depends on the amount of current flowing through the organic EL element 50 and the energization time. Therefore, by increasing the area of the sub-pixel 110B compared to the sub-pixel 110G and reducing the amount of current while ensuring the light emission luminance, the light emission lifetime of the organic EL element 50B is substantially equal to the light emission lifetime of the organic EL element 50G. To do.

  A feature of the arrangement of the subpixel SP and the pixel contact region in the present embodiment is that the subpixel 110G, the pixel contact region CH10, the subpixel 110R, and the pixel contact region CH9 are repeatedly arranged in this order in the X direction. That is, the length of CH9 is the same as the length of the pixel contact region CH10. Thereby, the sub-pixels 110G and 110R of different colors are arranged at equal intervals in the X direction.

  Further, if the distance d6 and the distance d8 in the Y direction are the same length, the sub-pixels 110G and 110B of different colors are arranged at equal intervals in the Y direction in the pixels P adjacent in the Y direction. Similarly, sub-pixels 110R and 110B of different colors are arranged at equal intervals in the Y direction.

FIG. 12 is a graph showing the spectral characteristics of the resonance structure and the spectral characteristics of the color filter in each of the blue (B), green (G), and red (R) subpixels SP.
As described above, the resonance structure according to the organic EL elements 50B, 50G, and 50R can be obtained so that colored light in a desired wavelength range can be obtained from each of the blue (B), green (G), and red (R) subpixels SP. Colored layers 71B, 71G, and 71R are provided.

  As shown in FIG. 12, the blue (B) colored layer 71B has a light transmittance of 60% or more in a wavelength range of 400 nm to 490 nm, for example. In the wavelength region of 490 nm or more, the light transmittance is reduced to 10% or less at 550 nm or more. The green (G) colored layer 71G has a light transmittance of 60% or more in a wavelength range of, for example, 490 nm to 580 nm. In the wavelength region of less than 490 nm, the light transmittance rapidly decreases, and in the wavelength region of less than 460 nm, the transmittance is less than 5%. Further, in the wavelength region of 580 nm or more, the light transmittance gradually decreases, and at 620 nm or more, it becomes 5% or less. The red (R) colored layer 71R has a light transmittance of 60% or more in a wavelength range of, for example, 590 nm to 650 nm. In the wavelength region of less than 590 nm, the light transmittance decreases rapidly, and in the wavelength region of 410 nm or more and 570 nm or less, it becomes 10% or less. In other words, the spectral characteristics of the colored layer 71B and the spectral characteristics of the colored layer 71G have overlapping portions, and the transmittance is about 60% in the vicinity of 490 nm. Further, the spectral characteristics of the colored layer 71G and the spectral characteristics of the colored layer 71R have overlapping portions, and the transmittance is about 45% in the vicinity of 590 nm.

On the other hand, from the organic EL element 50B in the blue (B) sub-pixel SP, the spectral radiance (unit: W (watt) / (Sr (steradian) · m ² (square meter) · nm (nanometer)) For example, light having a resonance wavelength showing a peak at 460 nm is emitted from the organic EL element 50G in the green (G) sub-pixel SP, and light having a resonance wavelength showing a peak in the spectral radiance is about 520 nm, for example. The organic EL element 50R in the red (R) sub-pixel SP emits light having a resonance wavelength having a peak in spectral radiance of, for example, about 610 nm, that is, the resonance structure and the color filter 70 (coloring). Each of the blue (B), green (G), and red (R) sub-pixels SP by including the layers 71B, 71G, and 71R). It has become a configuration capable of obtaining a color light with high color purity.

  FIG. 13 is a schematic diagram illustrating color misregistration due to a viewing angle when sub-pixels of different colors are adjacent to each other in the X direction or the Y direction. Specifically, in FIG. 13, sub-pixels SP arranged in the order of green (G), red (R), and green (G) in the X direction are shown in the upper stage, and blue (B) and green (G in the Y direction are shown in the middle stage. ), Blue (B), and sub-pixels SP arranged in the order of blue (B), red (R), and blue (B) in the Y direction.

  As shown in the upper part of FIG. 13, light LG1 emitted in the normal direction from the organic EL element 50G of the green (G) subpixel SP is transmitted through the colored layer 71G and emitted. Similarly, light LR1 emitted from the organic EL element 50R of the red (R) sub-pixel SP in the normal direction is emitted through the colored layer 71R. Light LG2 emitted in an oblique direction from the organic EL element 50G toward the colored layer 71R cannot pass through the colored layer 71R as shown by the spectral characteristics of the colored layer 71R shown in FIG. Most are absorbed). On the other hand, as shown in FIG. 12, since the spectral characteristic of the colored layer 71G and the spectral characteristic of the organic EL element 50R have an overlapping portion, the organic EL element 50R is directed to the colored layer 71G. Thus, a part of the light LR2 emitted obliquely passes through the colored layer 71G. That is, as shown in the upper part of FIG. 13, when the green (G) sub-pixel SP (colored layer 71G) is observed obliquely in the X direction, a part of the light LR2 is mixed with the light LG1. Mixed color is visible. For example, when one end in the X direction of the light emitting region of the red (R) organic EL element 50R is disposed closer to the green (G) colored layer 71G, the light LR2 transmitted through the colored layer 71G from an oblique direction is arranged. As the amount of light increases, the appearance of the mixed color state changes.

  In the present embodiment, the distance d5 of the pixel contact region between the light emitting region of the organic EL element 50G and the light emitting region of the organic EL element 50R is the same in the X direction. Therefore, the state of color mixture when observed from the left and right sides in the X direction with respect to the green (G) sub-pixel SP is difficult to change. That is, the color shift due to the viewing angle in the X direction is reduced. In consideration of reduction of color misregistration caused by the viewing angle in the X direction, as shown in FIG. 5, the colored layer 71 </ b> G and the colored layer 71 </ b> R of different colors are separated by the fifth insulating layer 17 in the X direction. It is preferable that the pixel contact region is arranged so as to be positioned at the center of the interval d5 which is the length in the X direction of the defined pixel contact region. In other words, the distance from the end of the light emitting region of the organic EL element 50R indicated by the width d1 in the X direction to the end of the colored layer 71R is preferably equal on the left and right sides in the X direction on the drawing. Similarly, the distance from the end of the light emitting region of the organic EL element 50G indicated by the width d1 in the X direction to the end of the colored layer 71G is preferably equal on the left and right sides in the X direction on the drawing.

  As shown in the upper part of FIG. 13, the distance df between the light emitting portions of the organic EL elements 50B, 50G, 50R and the color filter 70 (colored layers 71B, 71G, 71R) is as shown in FIG. Further, it is determined by the film thickness of the sealing layer 60. The film thickness of the sealing layer 60 is approximately 2 μm to 4 μm. Compared with the case where the organic EL elements 50B, 50G, and 50R and the color filter 70 (colored layers 71B, 71G, and 71R) are formed on different substrates and arranged to face each other, the color filter 70 is provided on the sealing layer 60. As a result, the color filter 70 (colored layers 71B, 71G, 71R) can be formed with high positional accuracy with respect to the light emitting portions of the organic EL elements 50B, 50G, 50R. In addition, since the light emitting portions of the organic EL elements 50B, 50G, and 50R and the color filter 70 (colored layers 71B, 71G, and 71R) can be arranged close to each other, it is possible to suppress the influence of color shift caused by the viewing angle.

  As shown in the middle part of FIG. 13, light LG1 emitted in the normal direction from the organic EL element 50G of the green (G) sub-pixel SP passes through the colored layer 71G and is emitted. Similarly, light LB1 emitted in the normal direction from the organic EL element 50B of the blue (B) subpixel SP is transmitted through the colored layer 71B and emitted. As shown in FIG. 12, since the spectral characteristics of the colored layer 71B and the spectral characteristics of the organic EL element 50G have an overlapping portion, an oblique direction from the organic EL element 50G toward the colored layer 71B. A part of the light LG2 emitted from the light transmits the colored layer 71B. In addition, as shown in FIG. 12, since the spectral characteristics of the colored layer 71G and the spectral characteristics of the organic EL element 50B have overlapping portions, the organic EL element 50B is directed toward the colored layer 71G. A part of the light LB2 emitted in the oblique direction is transmitted through the colored layer 71G. That is, as shown in the middle part of FIG. 13, when observed from an oblique direction in the Y direction with respect to the green (G) sub-pixel SP (colored layer 71G), a mixed color in which a part of the light LB2 is mixed with the light LG1. , A color mixture in which a part of the light LG2 is mixed with the light LB1 is visually recognized. For example, if one end in the Y direction of the light emitting region of the blue (B) organic EL element 50B is placed closer to the green (G) colored layer 71G, the amount of light LB2 transmitted through the colored layer 71G increases. For this reason, the appearance of the mixed color state changes. The distance d6 of one pixel contact region and the distance d8 of the other pixel region between the light emitting region of the organic EL element 50G and the light emitting region of the organic EL element 50B in the Y direction are caused by the viewing angle in the Y direction. From the viewpoint of reducing color misregistration, the same length is preferable. In consideration of the reduction in color misregistration caused by the viewing angle in the Y direction, as shown in FIG. 4, the boundary between the colored layer 71 </ b> B and the colored layer 71 </ b> G in different colors is caused by the fifth insulating layer 17. It is preferable that they are arranged so as to be located at the center of the interval d6 (interval d8) which is the length in the Y direction of the region between the defined sub-pixels. In other words, the distance from the end of the light emitting region of the organic EL element 50G indicated by the width d2 in the Y direction to the end of the colored layer 71G is preferably equal on the left and right sides in the Y direction on the drawing. Similarly, the distance from the end of the light emitting region of the organic EL element 50B indicated by the width d4 in the Y direction to the end of the colored layer 71B is preferably equal on the left and right sides in the Y direction on the drawing.

  Note that when the mixed color in which part of the light LR2 is mixed with the light LG1 and the mixed color in which a part of the light LB2 is mixed with the light LG1 shown in the upper part of FIG. 13 are compared, the light LB2 is more visible than the light LR2. Is low. Therefore, the color mixing in the X direction in which a part of the light LR2 is mixed with the light LG1 may be emphasized, and the color mixing in the Y direction in which a part of the light LB2 is mixed with the light LG1 may be neglected. In other words, the distance d6 of one pixel contact region between the light emitting area of the organic EL element 50G and the light emitting area of the organic EL element 50B and the distance d8 of the other pixel area in the Y direction are not necessarily the same. Also good.

  As shown in the lower part of FIG. 13, light LR1 emitted in the normal direction from the organic EL element 50R of the red (R) sub-pixel SP passes through the colored layer 71R and is emitted. Similarly, light LB1 emitted in the normal direction from the organic EL element 50B of the blue (B) subpixel SP is transmitted through the colored layer 71B and emitted. As shown in FIG. 12, since the spectral characteristics of the colored layer 71B and the spectral characteristics of the organic EL element 50R do not substantially overlap, light emitted in an oblique direction from the organic EL element 50R toward the colored layer 71B. A part of LR2 does not pass through the colored layer 71B. Further, as shown in FIG. 12, since the spectral characteristics of the colored layer 71R and the spectral characteristics of the organic EL element 50B hardly overlap each other, they are emitted obliquely from the organic EL element 50B toward the colored layer 71R. A part of the light LB2 does not pass through the colored layer 71R. That is, when observed from an oblique direction in the Y direction, a mixed color in which the light LB1 is mixed with the light LB2 and a mixed color in which the light LR2 is mixed with the light LB1 are not visually recognized. That is, in the Y direction, even if the distance d6 or the distance d8 between the light emitting region of the organic EL element 50B and the light emitting region of the organic EL element 50R is reduced, color mixing hardly occurs.

The effects of the first embodiment are as follows.
(1) In the pixel P1 and the pixel P2 adjacent in the X direction, the sub pixel 110G, the pixel contact region CH10, the sub pixel 110R, and the pixel contact region CH9 are repeatedly arranged in this order in the X direction. The distance d5 in the X direction between the pixel contact region CH9 and the pixel contact region CH10 has the same length. Accordingly, since the light emitting regions of the sub-pixels 110G and 110R of different colors are arranged at equal intervals in the X direction, it is possible to provide the electro-optical device 100 in which the color shift due to the viewing angle in the X direction is reduced. .

  (2) In the pixel P1 and the pixel P2 adjacent to each other in the X direction, the sub pixel 110B is arranged side by side in the Y direction with respect to the sub pixels 110G and 110R. Further, the sub-pixel 110B and the pixel contact region CH11 are repeatedly arranged in this order in the X direction. The distance d7 in the X direction of the pixel contact region CH11 is the same length as the distance d5 in the X direction of the pixel contact region CH9. That is, the light emitting regions of the sub-pixels 110B, 110G, and 110R in the X direction are arranged at equal intervals by the pixel contact regions CH9, CH10, and CH11. In other words, in the X direction, the subpixels 110B, 110G, 110G in the X direction are formed by the pixel contact regions CH9, CH10, CH11 without using a special configuration for dividing each of the subpixels 110B, 110G, 110R at equal intervals. , 110R can be divided at equal intervals.

  (3) Each of the sub-pixels 110B, 110G, and 110R includes the organic EL element 50, the resonance structure related to the organic EL element 50, and the color filter 70 (colored layers 71B, 71G, and 71R). Color light with excellent color purity can be extracted from each of the pixels 110B, 110G, and 110R. Therefore, it is possible to provide a self-luminous electro-optical device 100 that can reduce color misregistration caused by the viewing angle in the X direction and can display an attractive color display.

  (4) The organic EL element 50 (organic EL elements 50B, 50G, 50R), the resonance structure related to the organic EL elements 50B, 50G, 50R, and the color filter 70 (colored layers 71B, 71G, 71R) are the same. It is formed on the semiconductor substrate 10. Although the sealing layer 60 is provided between the organic EL element 50 and the color filter 70, the organic EL element 50 is compared with the case where the organic EL element 50 and the color filter 70 are formed on different substrates. Since the light emitting section and the color filter 70 can be arranged close to each other, the self-luminous electro-optical device 100 in which the color shift caused by the viewing angle hardly affects the display quality can be provided.

  Hereinafter, an embodiment in which the arrangement of sub-pixels SP of different colors is changed will be described. In each of the following embodiments, the basic configuration of the electro-optical device 100 is the same, and the sub-pixel SP includes an organic EL element 50 as a light emitting element, a resonance structure related to the organic EL element 50, and a color filter. 70. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted. Also, the following embodiments share the effects (3) and (4) of the first embodiment in common.

(Second Embodiment)
FIG. 14 is a schematic plan view illustrating an arrangement of sub-pixels and pixel contact regions in the electro-optical device according to the second embodiment.
As shown in FIG. 14, in the second embodiment, the arrangement of the sub-pixel 110G and the sub-pixel 110R in the X direction is different between the pixel P1 and the pixel P2 adjacent to each other in the X direction in the first embodiment. Is. Specifically, the sub pixel 110G, the pixel contact region CH10, the sub pixel 110R, the pixel contact region CH9, the sub pixel 110R, the pixel contact region CH9, the sub pixel 110G, and the pixel contact region CH10 are arranged in this order in the X direction. Yes. The sub-pixel 110R of the same color is disposed in the X direction with the pixel contact region CH9 interposed therebetween, and the sub-pixel 110G of the same color is disposed in the X direction with the pixel contact region CH10 interposed therebetween. Note that, in the pixel P1 and the pixel P2 adjacent in the X direction, the sub pixel 110R, the pixel contact region CH9, the sub pixel 110G, the pixel contact region CH10, the sub pixel 110G, the pixel contact region CH10, the sub pixel 110R, The pixel contact region CH9 may be arranged in this order. Note that each of the sub-pixels 110B, 110G, and 110R illustrated in FIG. 14 indicates a light emitting region.

  The arrangement of the sub-pixel 110B and the pixel contact region CH11 is the same as that in the first embodiment, and the sub-pixel 110B is arranged in the Y direction with respect to the sub-pixel 110G and the sub-pixel 110R. In the pixels P1 and P2 adjacent in the X direction, the sub-pixel 110B and the pixel contact region CH11 are repeatedly arranged in this order in the X direction. That is, the sub-pixels 110B of the same color are arranged in the X direction with the pixel contact region CH11 interposed therebetween.

  According to the arrangement of the subpixels SP, the subpixels SP of the same color are arranged side by side in the X direction with the pixel contact region related to the subpixel SP interposed therebetween.

  In the X direction, the length of the light emitting region of the sub pixel 110G and the length of the light emitting region of the sub pixel 110R are the same, and the length of the pixel contact region CH9 and the length of the pixel contact region CH10 are also the same. Further, the length of the pixel contact region CH9 and the length of the pixel contact region CH11 in the X direction are the same.

According to the second embodiment, in addition to the effects (2) to (4) of the first embodiment, the following effects can be obtained.
(5) The subpixels SP of the same color are arranged in the X direction with the pixel contact region of the subpixel SP interposed therebetween. That is, in the pixels P1 and P2 adjacent in the X direction, the sub-pixels SP of different colors are arranged symmetrically with respect to the pixel contact regions CH9 and CH11. Therefore, color symmetry in the arrangement of the sub-pixels SP in the X direction is realized with respect to the first embodiment, and the probability that sub-pixels SP of different colors are arranged adjacent to each other in the X direction is reduced. , It is possible to further suppress the color shift caused by the viewing angle in the X direction.

(Third embodiment)
FIG. 15 is a schematic plan view illustrating an arrangement of sub-pixels and pixel contact regions in the electro-optical device according to the third embodiment.
As shown in FIG. 15, the third embodiment differs from the first embodiment in the arrangement of the pixel contact regions. Specifically, the sub-pixel 110G and the sub-pixel 110R are arranged in this order with an interval d5 in the X direction. The sub-pixels 110B are repeatedly arranged with an interval d7 in the X direction. Note that each of the sub-pixels 110B, 110G, and 110R illustrated in FIG. 15 indicates a light emitting region.

  The length in the X direction of the light emitting region of the subpixel 110G and the subpixel 110R is the width d1, and the length in the X direction of the light emitting region of the subpixel 110B is a width d3 larger than the width d1. The length in the Y direction of the light emitting region of the subpixel 110G and the subpixel 110R is the width d2, and the length in the Y direction of the light emitting region of the subpixel 110B is the width d4. The lengths in the Y direction of the width d2 and the width d4 may be the same or different.

  In the pixel P, the sub pixel 110B is arranged in the Y direction with respect to the sub pixel 110G and the sub pixel 110R. In the pixel P, the pixel contact region CH12 related to the sub pixel 110G and the pixel contact related to the sub pixel 110R are arranged in the Y direction in the region between the sub pixel 110G and the sub pixel 110R and the sub pixel 110B, that is, the interval d6. A region CH13 is provided. Further, in the pixel P1 and the pixel P3 as the pixels P adjacent in the Y direction, the sub pixel 110B is arranged in the region between the sub pixel 110G and the sub pixel 110R and the sub pixel 110B arranged in the Y direction, that is, in the interval d8. Such a pixel contact region CH14 is provided. In this case, the distance d6 and the distance d8 have the same length in the Y direction.

  In the present embodiment, in the pixel P1, the sub pixel 110G is an example of the first sub pixel of the present invention, and the sub pixel 110R is an example of the second sub pixel of the present invention. In the pixel P2 adjacent to the pixel P1 in the X direction, the sub pixel 110G is an example of the third sub pixel of the present invention, and the sub pixel 110R is an example of the fourth sub pixel of the present invention. Further, in the pixel P1 and the pixel P3 adjacent in the Y direction, the sub pixel 110B arranged in the Y direction with respect to the sub pixel 110G and the sub pixel 110R is an example of the fifth sub pixel of the present invention. In the pixel P2 and the pixel P4 adjacent in the Y direction, the sub pixel 110B arranged in the Y direction with respect to the sub pixel 110G and the sub pixel 110R is an example of the sixth sub pixel of the present invention. Therefore, the region (distance d6) where the pixel contact region CH12 and the pixel contact region CH13 are provided in the pixel P1 is an example of the fifth region of the present invention, and the region (interval) where the pixel contact region CH14 is provided in the pixel P3. d8) is an example of the sixth region of the present invention. The region (distance d6) in which the pixel contact region CH12 and the pixel contact region CH13 are provided in the pixel P2 is an example of the seventh region of the present invention, and the region (distance d8) in which the pixel contact region CH14 is provided in the pixel P4. Is an example of the eighth region of the present invention. In the pixel P1, a region between the sub-pixel 110G and the sub-pixel 110R adjacent in the X direction is an example of a first region. In the pixel P1 and the pixel P2 adjacent in the X direction, the sub-pixel 110R and The area between the sub-pixel 110G is an example of the second area of the present invention, and the area between the sub-pixel 110G and the sub-pixel 110R adjacent in the X direction in the pixel P2 is the third area of the present invention. It is an example. In the pixel P2, the area between the sub-pixels opposite to the third area in the X direction with respect to the sub-pixel 110R is an example of the fourth area of the present invention.

According to the third embodiment, in addition to the effects (3) and (4) of the first embodiment, the following effects can be obtained.
(6) In the pixel P1 and the pixel P3 adjacent in the Y direction, the sub pixel 110G, the pixel contact region CH12, the sub pixel 110B, the pixel contact region CH14, the sub pixel 110G, the pixel contact region CH12, the sub pixel 110B, and the pixel contact region CH14 is arranged in the Y direction in this order. Similarly, the sub pixel 110R, the pixel contact region CH13, the sub pixel 110B, the pixel contact region CH14, the sub pixel 110R, the pixel contact region CH13, the sub pixel 110B, and the pixel contact region CH14 are arranged in this order in the Y direction. Since the interval d6 that is the length in the Y direction of the pixel contact regions CH12 and CH13 is the same as the interval d8 that is the length in the Y direction of the pixel contact region CH14, as described in the first embodiment. According to the spectral characteristics of FIG. 12, the light emitting areas of the sub-pixels 110B and the sub-pixels 110G having different colors that cause color mixing are arranged at equal intervals in the Y direction. In addition, although it is difficult for color mixing to occur, the light emission regions of the sub-pixels 110B and the light emission regions of the sub-pixels 110R of different colors are arranged at equal intervals in the Y direction. That is, it is possible to provide an electro-optical device in which color misregistration due to the viewing angle in the Y direction is reduced.

  As in the first embodiment, from the viewpoint of reducing color misregistration caused by the viewing angle in the X direction, the distance d5 related to the arrangement of the sub-pixel 110G and the sub-pixel 110R and the arrangement of the sub-pixel 110B are related. More preferably, the distance d7 is the same length.

(Fourth embodiment)
FIG. 16 is a schematic plan view illustrating an arrangement of sub-pixels and pixel contact regions in the electro-optical device according to the fourth embodiment.
As shown in FIG. 16, in the fourth embodiment, the number of sub-pixels SP of different colors in the pixel P as a display unit is increased from three colors to four colors in the first embodiment. Further, each of the sub-pixels 110B, 110G, 110R, and 110Y shown in FIG. 16 indicates a light emitting region.
Specifically, in the pixel P, the sub pixel 110G, the pixel contact region CH15, the sub pixel 110R, and the pixel contact region CH16 are arranged in this order in the X direction. Further, the sub-pixel 110B, the pixel contact region CH17, the yellow (Y) sub-pixel 110Y, and the pixel contact region CH18 are arranged in this order in the X direction. A sub pixel 110G is arranged in the Y direction with respect to the sub pixel 110B, and a sub pixel 110R is arranged in the Y direction with respect to the sub pixel 110Y. Note that the color to be increased other than blue (B), green (G), and red (R) is not limited to yellow (Y), and other intermediate colors may be selected.

  The widths d1 that are the lengths in the X direction of the light emitting regions of the subpixel 110G, the subpixel 110R, the subpixel 110B, and the subpixel 110Y are all the same. The length in the Y direction of the light emitting regions of the subpixel 110G and the subpixel 110R is the width d2, and the length in the Y direction of the light emitting regions of the subpixel 110B and the subpixel 110Y is the width d4. The width d2 and the width d4 may be the same length or may be different.

  The interval d5 that is the length in the X direction of the pixel contact regions CH15, CH16, CH17, and CH18 is the same length.

  The length between the sub-pixel 110B and the sub-pixel 110G and the length between the sub-pixel 110Y and the sub-pixel 110R in the Y direction in the pixel P are both the same length with the interval d6. That is, the length between the light emitting regions of the sub-pixels SP of different colors in the Y direction in the pixel P is the interval d6. According to the same concept, the length between the light emitting regions of the sub-pixels SP of different colors in the pixel P adjacent in the Y direction is the interval d8. The distance d6 and the distance d8 in the Y direction may be the same length or different lengths.

  In other words, in the present embodiment, in the pixel P1 and the pixel P2 as the pixels P adjacent to each other in the X direction, the light emitting areas of four different color sub-pixels SP are arranged at equal intervals in the X direction. In addition, the sub pixel 110G in the present embodiment is an example of the first sub pixel in another application example of the present invention, and similarly, the sub pixel 110R is an example of the second sub pixel, and the sub pixel 110B is the third sub pixel. The sub pixel 110Y is an example of a fourth sub pixel.

According to the fourth embodiment, in addition to the effects (3) and (4) of the first embodiment, the following effects can be obtained.
(7) In the pixel P1 and the pixel P2 as the pixels P adjacent to each other in the X direction, the light emitting areas of four different color sub-pixels SP are arranged at equal intervals in the X direction. Therefore, the color shift due to the viewing angle in the X direction is reduced, and an electro-optical device capable of more excellent color expression can be provided by increasing the number of yellow (Y) sub-pixels 110Y.

  As in the third embodiment, from the viewpoint of reducing the color shift caused by the viewing angle in the Y direction, the arrangement of the light emitting region of the subpixel 110G and the light emitting region of the subpixel 110B in the same pixel P is arranged. It is more preferable that the interval d6 and the interval d8 related to the arrangement of the light emitting region of the subpixel 110B and the light emitting region of the subpixel 110G in the pixel P adjacent in the Y direction have the same length.

(Fifth embodiment)
FIG. 17 is a schematic plan view illustrating an arrangement of sub-pixels and pixel contact regions in the electro-optical device according to the fifth embodiment.
As shown in FIG. 17, in the fifth embodiment, as in the fourth embodiment, the number of sub-pixels SP of different colors in the pixel P as a display unit is increased from three colors to four colors. The arrangement of sub-pixels SP of different colors is different from that of the fourth embodiment. Further, each of the sub-pixels 110B, 110G, 110R, and 110Y shown in FIG. 17 represents a light emitting region.
Specifically, in the pixel P1 and the pixel P2 adjacent in the X direction, the sub pixel 110G, the pixel contact region CH15, the sub pixel 110R, the pixel contact region CH16, the sub pixel 110R, the pixel contact region CH16, the sub pixel 110G, the pixel Contact regions CH15 are arranged in this order in the X direction. Further, the sub-pixel 110B, the pixel contact region CH17, the sub-pixel 110Y, the pixel contact region CH18, the sub-pixel 110Y, the pixel contact region CH18, the sub-pixel 110B, and the pixel contact region CH17 are arranged in this order in the X direction. A sub pixel 110G is arranged in the Y direction with respect to the sub pixel 110B, and a sub pixel 110R is arranged in the Y direction with respect to the sub pixel 110Y.

  In the present embodiment, the sub-pixels 110R of the same color are arranged across the pixel contact region CH16 in the pixels P1 and P2 adjacent in the X direction. Similarly, sub-pixels 110Y of the same color are arranged with the pixel contact region CH18 interposed therebetween. That is, in the pixel P adjacent in the X direction, the sub-pixel SP of the same color is arranged with the pixel contact region of the sub-pixel interposed therebetween.

According to the fifth embodiment, in addition to the effects (3) and (4) of the first embodiment, the following effects can be obtained.
(8) The subpixels SP of the same color are arranged in the X direction with the pixel contact region of the subpixel SP interposed therebetween. That is, in the pixels P1 and P2 adjacent in the X direction, the sub-pixels SP of different colors are arranged symmetrically with respect to the pixel contact regions CH16 and CH18. Therefore, with respect to the fourth embodiment, the color symmetry in the arrangement in the X direction of the light emitting region of the subpixel SP is realized, and the probability that the subpixels SP having different colors are arranged adjacent to each other in the X direction is reduced. As a result, the color shift caused by the viewing angle in the X direction can be further suppressed.

  Next, the effect of reducing the color misregistration caused by the viewing angle in the embodiment will be described by giving more specific examples and comparative examples related to the size and arrangement of the light emitting areas of the sub-pixels SP of different colors.

Example 1
The arrangement of the sub-pixels SP of different colors in Example 1 is the first embodiment shown in FIG. 11, and the dimensions related to each sub-pixel SP are as follows.
The width d1 in the X direction of the light emitting regions of the subpixel 110G and the subpixel 110R is 2.5 μm.
The width d2 in the Y direction of the light emitting regions of the subpixel 110G and the subpixel 110R is 3.4 μm.
The width d3 in the X direction of the light emitting region of the sub-pixel 110B is 6.25 μm.
The width d4 in the Y direction of the light emitting region of the sub-pixel 110B is 2.7 μm.
An interval d5 (interval d7) in the X direction between the pixel contact regions CH9, CH10, and CH11 is 1.25 μm.
The intervals d6 and d8 between the light emitting regions of the subpixel 110G and the subpixel 110R and the light emitting region of the subpixel 110B in the Y direction are the same and are 0.7 μm.

(Example 2)
The arrangement of sub-pixels SP of different colors in Example 2 is the third embodiment shown in FIG. 15, and the dimensions relating to each sub-pixel SP are as follows.
The width d1 in the X direction of the light emitting regions of the subpixel 110G and the subpixel 110R is 3.05 μm.
The width d2 in the Y direction of the light emitting regions of the subpixel 110G and the subpixel 110R is 2.65 μm.
The width d3 in the X direction of the light emitting region of the sub-pixel 110B is 6.8 μm.
The width d4 in the Y direction of the light emitting region of the sub-pixel 110B is 2.35 μm.
An interval d5 that is the length in the X direction of the region between the light emitting region of the subpixel 110G adjacent to the X direction and the light emitting region of the subpixel 110R is 0.7 μm. Similarly, the distance d7, which is the length in the X direction between the light emitting regions of the sub-pixels 110B adjacent in the X direction, is 0.7 μm.
An interval d6 (interval d8) that is a length in the Y direction of the pixel contact regions CH12, CH13, and CH14 is 1.25 μm.

(Comparative Example 1)
FIG. 18 is a schematic plan view showing the arrangement of sub-pixels SP and pixel contact regions of different colors in Comparative Example 1. Note that each of the sub-pixels 110B, 110G, and 110R illustrated in FIG. 18 indicates a light emitting region. As shown in FIG. 18, in the comparative example 1, in the pixel P which is a display unit, the sub-pixel 110G and the sub-pixel 110R are arranged side by side in the X direction, and in the Y direction with respect to the sub pixel 110G and the sub pixel 110R. The sub-pixels 110B are arranged side by side. If only the arrangement of the sub-pixels SP of different colors is seen, the three contact holes CH19, CH20, and CH21 related to the sub-pixel 110B, the sub-pixel 110G, and the sub-pixel 110R are arranged in the Y direction. The sub pixel 110G and the sub pixel 110R are arranged in a region between the sub pixel 110B. That is, the length in the Y direction of the pixel contact regions CH19, CH20, and CH21 is the interval d6.
The dimensions related to each sub-pixel SP of Comparative Example 1 are as follows.
The width d1 in the X direction of the light emitting regions of the subpixel 110G and the subpixel 110R is 3.05 μm.
The width d2 in the Y direction of the light emitting regions of the subpixel 110G and the subpixel 110R is 2.9 μm.
The width d3 in the X direction of the light emitting region of the sub-pixel 110B is 6.8 μm.
The width d4 in the Y direction of the light emitting region of the sub-pixel 110B is 2.65 μm.
An interval d5 that is the length in the X direction of the region between the light emitting region of the subpixel 110G adjacent to the X direction and the light emitting region of the subpixel 110R is 0.7 μm. Similarly, the distance d7, which is the length in the X direction between the light emitting regions of the sub-pixels 110B adjacent in the X direction, is 0.7 μm.
The distance d6, which is the length in the Y direction of the pixel contact regions CH19, CH20, CH21, is 1.25 μm. Further, the length in the Y direction, that is, the distance d8, of the region between the sub-pixel 110G and the sub-pixel 110R and the sub-pixel 110B arranged in the Y direction, in which the contact holes CH19, CH20, and CH21 are not provided, is 0.7 μm. It is.

(Comparative Example 2)
FIG. 19 is a schematic plan view showing the arrangement of sub-pixels SP and pixel contact regions of different colors in Comparative Example 2. Note that each of the sub-pixels 110B, 110G, and 110R illustrated in FIG. 19 indicates a light emitting region. As shown in FIG. 19, in the comparative example 2, in the pixel P which is a display unit, the sub-pixel 110B, the sub-pixel 110G, and the sub-pixel 110R are arranged in this order in the Y direction. In the pixel P1 and the pixel P2 adjacent to each other in the X direction, the sub pixel 110B and the pixel contact region CH24 are arranged in this order in the X direction, and the sub pixel 110G and the pixel contact region CH23 are arranged in this order in the X direction. The sub-pixel 110R and the pixel contact region CH22 are arranged in this order in the X direction. Such an arrangement of sub-pixels SP of different colors is called a horizontal stripe method.
The dimensions related to each sub-pixel SP of Comparative Example 2 are as follows.
The width d11 in the X direction of the light emitting regions of the subpixel 110B, the subpixel 110G, and the subpixel 110R is 6.25 μm.
The width d12 in the Y direction of the light emitting region of the sub-pixel 110R is 1.37 μm.
The width d13 in the Y direction of the light emitting region of the sub-pixel 110G is the same as the width d12 and is 1.37 μm.
The width d14 in the Y direction of the light emitting region of the sub-pixel 110B is 2.66 μm.
An interval d15 in the X direction between the pixel contact regions CH22, CH23, and CH24 is 1.25 μm.
The intervals d16, d17, and d18 of the sub-pixels SP of different colors in the Y direction are all the same, and are 0.7 μm.

  In the first embodiment, the second embodiment, the first comparative example, and the second comparative example, the size of the pixel P as a display unit is the same, and the light emitting areas of the subpixel 110G and the subpixel 110R are the same, The light emitting area of 110B is almost twice as large as that of the subpixel 110G.

<Evaluation of optical characteristics of Examples and Comparative Examples>
20 is a graph showing the viewing angle characteristic of the luminance in the X direction of the example and the comparative example, FIG. 21 is a graph showing the viewing angle characteristic of the luminance in the Y direction of the example and the comparative example, and FIG. 22 is an X of the example and the comparative example. FIG. 23 is a graph showing the viewing angle characteristics of the color misregistration in the Y direction in the example and the comparative example.

  As an evaluation method of optical characteristics, luminance viewing angle characteristics and color misregistration viewing angle characteristics in a state where all the pixels P of the display area 101a of the display panel 101 are displayed in white were obtained using an optical simulator. The luminance is obtained when the front luminance is “1” and the viewing angle with respect to the normal direction is changed within a range of ± 20 degrees. The color misregistration is the amount of chromaticity deviation (Δu) when the viewing angle with respect to the normal direction is changed in a range of ± 20 degrees with respect to the front chromaticity when white display is performed (according to the CIE 1976 UCS system chromaticity diagram). The value of “v”) is obtained.

  The electro-optical devices of the example and the comparative example define the configuration and arrangement of the pixels P (sub-pixels SP) on the assumption that they are used in a display unit of a head-mounted display as an electronic device to be described later. Therefore, in the evaluation of the example and the comparative example, it is preferable that the change in luminance is within 20% with respect to the front and the color shift (Δu′v ′) is 0.02 or less in the viewing angle range of ± 15 degrees. It is said.

  As shown in FIG. 20, in the viewing angle characteristics of the luminance in the X direction, the change in luminance is within 20% in all of Example 1, Example 2, Comparative Example 1, and Comparative Example 2. Note that the luminance viewing angle characteristic of Example 2 is substantially the same as the luminance viewing angle characteristic of Comparative Example 1, and FIG. On the other hand, in the viewing angle characteristics of the luminance in the Y direction, as shown in FIG. 21, the luminance change in Example 1, Example 2, and Comparative Example 1 is within 20%, but Comparative Example 2 is luminance. The change has reached 40%. This is considered to be due to the fact that in the second comparative example, the sub-pixels SP of different colors are arranged in order in the Y direction.

  As shown in FIG. 22, in the viewing angle characteristics of the color misregistration in the X direction, the change in color misregistration is within 0.02 in the range of ± 20 degrees in each of Example 1, Example 2, Comparative Example 1, and Comparative Example 2. The way of change is the same regardless of whether the viewing angle is on the + side or the-side. On the other hand, in Example 1, Example 2, and Comparative Example 1, the change amount is within 0.01, whereas the change amount of Comparative Example 2 is large. This is because the comparative example 2 is different from the first example, the second example, and the first comparative example in the pixel P1 and the pixel P2 that are adjacent to each other in the X direction. In this case, the lower the viewing angle, the longer the optical distance in optical resonance, and the wavelength of light emitted from the organic EL element 50 in the oblique direction is shifted to the longer wavelength side, so that it is easily affected by color shift. It is done.

  On the other hand, in the viewing angle characteristics of the color misregistration in the Y direction, as shown in FIG. 23, in Example 1 and Example 2, the color misregistration change is within 0.015 within a range of ± 15 degrees. The method of change is the same regardless of whether it is on the + side or-side. On the other hand, in Comparative Examples 1 and 2, the change in color shift is within 0.02 within a range of ± 15 degrees, but the amount of change in color shift on the minus side of the viewing angle is + It can be seen that the amount of change in the color shift on the side is much larger. This is considered to be caused by the fact that the arrangement of the light emitting regions of the sub-pixels SP of different colors in the Y direction is not equally spaced in the comparative example 1 and the comparative example 2 compared to the first and second examples. In particular, in Comparative Example 1, the length of the interval d6 in which the pixel contact regions CH19, CH20, and CH21 are provided is 1.25 μm, and the length of the interval d8 in which the pixel contact regions CH19, CH20, and CH21 are not provided. Is 0.7 μm, the length of the interval d6 in the Y direction is clearly different from the length of the interval d8.

  In the first and second embodiments, the light emitting regions of the sub-pixels SP of different colors are arranged at equal intervals in the X direction and the Y direction, and therefore, between the sub-pixels SP of different colors arranged adjacent to each other. The state of color mixture of is difficult to change depending on the viewing angle. That is, the color shift caused by the viewing angle is reduced.

  FIG. 24 is a graph showing the relationship between the distance from the light emitting portion of the organic EL element to the colored layer and the color shift. Specifically, the distance df (see FIG. 13) from the light emitting portion of the organic EL element 50 to the colored layer 71 in Example 1, that is, the film thickness of the sealing layer 60 (see FIGS. 4 and 5) is about 2. It was 6 μm. The viewing angle characteristics of the color misregistration in the X direction when this is 1.6 μm and 3.6 μm are obtained by optical simulation. As shown in FIG. 24, when the distance between the light emitting portion of the organic EL element 50 and the colored layer 71 is reduced, the optical distance at the low viewing angle of the resonance structure becomes longer, resulting in an oblique direction. It is considered that the degree of color misregistration is increased under the influence of the shift of the wavelength of emitted light toward the longer wavelength side. This is related to the spectral characteristics of light emission and the spectral characteristics of the colored layer in the resonance structure for each subpixel SP, and therefore, between the light emitting portion of the organic EL element 50 and the colored layer 71 according to the allowable range of color misregistration. It is considered preferable to set the distance. Further, since the film thickness of the sealing layer 60 relates to the reliability quality, it is necessary to consider this as well.

  FIG. 25 is a graph showing the relationship between the width of the pixel contact region and the color shift. Specifically, the distance d5 that is the length of the pixel contact region in the X direction in Example 1 was 1.25 μm. The visual angle characteristics of the color shift in the X direction when this is 0.75 μm and 1.75 μm are obtained by optical simulation. As shown in FIG. 25, when the distance d5 between the pixel contact regions is reduced, the degree of color shift is slightly improved. This is because the length of the sub-pixel 110G and the sub-pixel 110R in the X direction is increased and the area of the light-emitting region is substantially increased by shortening the distance d5 of the pixel contact region. It is considered that the relative impact of changes. That is, the area of the light emitting region of the sub-pixel SP relative to the area of the pixel P, that is, the aperture ratio is related to the color shift. Therefore, it is considered preferable to set the size of the pixel contact region according to the aperture ratio of the subpixel SP.

(Sixth embodiment)
<Electronic equipment>
Next, an example of an electronic apparatus to which the electro-optical device of the above embodiment is applied will be described with reference to FIG. FIG. 26 is a schematic diagram showing a configuration of a head mounted display as an electronic apparatus.

  As shown in FIG. 26, a head mounted display (HMD) 1000 as an electronic apparatus of the present embodiment includes a pair of optical units 1001L and 1001R for displaying information corresponding to the left and right eyes, A mounting unit (not shown) for mounting the pair of optical units 1001L and 1001R on the user's head, a power supply unit, a control unit (not shown), and the like are provided. Here, since the pair of optical units 1001L and 1001R have a bilaterally symmetric configuration, the optical unit 1001R for the right eye will be described as an example.

  The optical unit 1001R includes a display unit 100R to which the electro-optical device 100 of the above embodiment is applied, a condensing optical system 1002, and a light guide body 1003 bent in an L shape. The light guide body 1003 is provided with a half mirror layer 1004. In the optical unit 1001R, the display light emitted from the display unit 100R is incident on the light guide 1003 by the condensing optical system 1002, reflected by the half mirror layer 1004, and guided to the right eye. The display light (video) projected on the half mirror layer 1004 is a virtual image. Therefore, the user can visually recognize both the display (virtual image) by the display unit 100R and the outside world beyond the half mirror layer 1004. That is, the HMD 1000 is a transmissive (see-through) projection display device.

  The light guide 1003 is a combination of rod lenses and forms a rod integrator. A condensing optical system 1002 and a display unit 100R are arranged on the light incident side of the light guide 1003, and the rod lens receives display light condensed by the condensing optical system 1002. . Further, the half mirror layer 1004 of the light guide body 1003 has an angle at which the light beam collected by the condensing optical system 1002 and totally transmitted in the rod lens is reflected toward the right eye. .

  The display unit 100R can display the display signal transmitted from the control unit as image information such as characters and video. The displayed image information is converted from a real image to a virtual image by the condensing optical system 1002.

  As described above, the optical unit 1001L for the left eye also includes the display unit 100L to which the electro-optical device 100 of the above embodiment is applied, and the configuration and function are the same as those of the optical unit 1001R for the right eye. is there.

  According to the present embodiment, since the electro-optical device 100 of the above-described embodiment is applied as the display units 100L and 100R, the color shift due to the viewing angle is reduced, and a see-through type color display that can display a good-looking color is possible. An HMD 1000 can be provided.

  In particular, when confirming the display light (image) projected with both eyes, the distance between the left eye and the right eye of the user is not necessarily constant. The viewing angle range in which the display light is confirmed by the right eye may vary depending on the user. If the color mixing state due to the viewing angle is different between the display unit 100L and the display unit 100R, a sense of incongruity due to color misalignment of display light (image) recognized by both eyes will be felt, and over a long period of time. It becomes easy to get tired when wearing. According to the present embodiment, since the color misregistration due to the viewing angle is reduced, it is possible to provide the head mounted display 1000 that does not get tired in image recognition even when worn for a long time.

  The HMD 1000 to which the electro-optical device 100 of the above embodiment is applied is not limited to a configuration including a pair of optical units 1001L and 1001R corresponding to both eyes. For example, the HMD 1000 includes a single optical unit 1001R. Also good. Moreover, it is not limited to a see-through type, and may be an immersive type that visually recognizes a display in a state where external light is shielded. In addition, the electro-optical devices of the other embodiments may be applied to the display units 100L and 100R.

  The present invention is not limited to the above-described embodiments, and various modifications can be made as appropriate without departing from the spirit or concept of the invention that can be read from the claims and the entire specification. Electronic equipment to which the electro-optical device is applied is also included in the technical scope of the present invention. Various modifications other than the above embodiment are conceivable. Hereinafter, a modification will be described.

  (Modification 1) In the first embodiment and the third embodiment, the sub pixel 110G and the sub pixel 110R are arranged in the pixel P on the lower side in the Y direction of the sub pixel 110B. However, the present invention is not limited to this. The sub pixel 110G and the sub pixel 110R may be arranged above the sub pixel 110B in the Y direction. Further, the sub pixel 110R may be disposed on the left side in the X direction, and the sub pixel 110G may be disposed on the right side. Further, although the light emission areas of the sub-pixels 110G and 110R arranged in the X direction are the same, the present invention is not limited to this, and the light emission areas may be different. That is, at least subpixels SP adjacent to each other in the first direction are arranged at equal intervals, optical characteristics (spectral characteristics) of subpixels SP of different colors, and optical characteristics (for example, luminance and white balance) as the display panel 101. In consideration of the above, the emission area and arrangement of the sub-pixel SP can be set.

  In each of the above embodiments, the row direction (X direction) in the arrangement of the pixels P is exemplified as the first direction of the present invention. However, the present invention is not limited to this. FIG. 27 is a schematic plan view showing the arrangement of sub-pixels and pixel contact regions in a pixel of a modified example. For example, as shown in FIG. 27, the first direction of the present invention is the column direction (Y direction) in the array of pixels P, and the second direction intersecting the first direction is the row direction (X direction) in the array of pixels P. ). The pixel P1 includes a sub pixel 110B as a first sub pixel, a pixel contact region CH10 as a first region, a sub pixel 110R as a second sub pixel, and a pixel contact region as a second region, which are arranged in the Y direction. It has CH9. The pixel P2 adjacent to the pixel P1 in the Y direction is arranged in the Y direction, the sub pixel 110B as the third sub pixel, the pixel contact region CH10 as the third region, and the sub pixel 110R as the fourth sub pixel. And a pixel contact region CH9 as a fourth region.

  The pixel P1 includes a sub-pixel 110G as a fifth sub-pixel and a pixel contact region CH11 as a fifth region, which are arranged in the Y direction. In the pixel P1, the sub pixel 110G is arranged in the X direction intersecting the Y direction with respect to the sub pixel 110B and the sub pixel 110R. The pixel P2 adjacent to the pixel P1 in the Y direction has a sub pixel 110G as a sixth sub pixel and a pixel contact region CH11 as a sixth region, which are arranged in the Y direction. Similarly to the pixel P1, also in the pixel P2, the sub-pixel 110G is arranged in the X direction intersecting the Y direction with respect to the sub-pixel 110B and the sub-pixel 110R.

  The length in the Y direction of the light emitting regions of the subpixel 110B and the subpixel 110R is the width d1, and the length of the pixel contact regions CH9 and CH10 in the Y direction, that is, the interval between the light emitting regions adjacent in the Y direction is d5. The length in the Y direction of the light emitting region of the subpixel 110G is approximately twice the width d1 of the light emitting region of the subpixel 110B. The length in the X direction of the light emitting region of the subpixel 110B and the subpixel 110R is the width d2, the length in the X direction of the light emitting region of the subpixel 110G is the width d4, and the width d2 and the width d4 are the same. . The length in the X direction between the sub pixel 110B and the sub pixel 110G in the pixel P is the interval d6, and the length in the X direction between the sub pixel 110G and the sub pixel 110B of the pixel P adjacent in the X direction. Is the interval d8. The interval d6 and the interval d8 are the same. That is, the arrangement of the sub-pixels in the modification is obtained by rotating the sub-pixel arrangement shown in FIG. 11 of the first embodiment by 90 degrees in the plane, and the sub-pixels 110B and 110G are exchanged. The area of the light emitting region of the subpixel 110G is larger than the area of the light emitting region of the subpixel 110B. Thereby, the balance of the luminance and the luminance life of the organic EL element 50 of the sub-pixel SP in the pixel P are adjusted. Even with the arrangement of the sub-pixels SP of different colors in the pixels of such a modification, the color shift caused by the viewing angle in the row direction (X direction) and the column direction (Y direction) can be reduced.

  (Modification 2) In each of the embodiments described above, the organic EL element 50 capable of obtaining white light emission and the resonance structure are combined to extract desired color light from the sub-pixels SP of different colors. However, the resonance structure is essential. Instead, for example, the present invention can also be applied to a configuration without a resonance structure or a configuration in which organic EL elements that can obtain colored light corresponding to the sub-pixels SP of different colors are provided.

  (Modification 3) The arrangement of the sub-pixels SP of different colors and the pixel contact region in the present invention is not limited to being applied to the self-luminous electro-optical device 100. For example, the present invention can also be applied to a light-receiving display device that uses illumination light, such as a transmissive liquid crystal device.

  (Modification 4) The electronic apparatus to which the electro-optical device of each of the above embodiments can be applied is not limited to the head mounted display 1000 of the above sixth embodiment. For example, the invention can be applied to various on-vehicle head-up displays (HUD) and various projection display devices such as an illumination type.

  DESCRIPTION OF SYMBOLS 10 ... Semiconductor substrate as a substrate, 50, 50B, 50G, 50R ... Organic EL element as a light emitting element, 70 ... Color filter, 71, 71B, 71G, 71R ... Colored layer, 100 ... Electro-optical device, 110, 110B, 110G, 110R: pixel circuit or subpixel, CH9, CH10, CH11: contact hole or pixel contact region, P: pixel as a display unit, SP: subpixel.

Claims (17)

A first sub-pixel, a first region, a second sub-pixel, a second region, a third sub-pixel, a third region, a fourth sub-pixel, a fourth region, which are arranged in the first direction,
The first sub-pixel has a different color from the second sub-pixel,
The third sub-pixel has a different color from the fourth sub-pixel,
The first region is a pixel contact region of the first sub-pixel;
The second region is a pixel contact region of the second sub-pixel;
The third region is a pixel contact region of the third sub-pixel;
The fourth region is a pixel contact region of the fourth sub-pixel;
The electro-optical device, wherein the first region, the second region, the third region, and the fourth region have the same length in the first direction. A fifth subpixel, a fifth region, a sixth subpixel, and a sixth region, which are arranged in the first direction;
The fifth sub-pixel is arranged in a second direction intersecting the first direction with respect to the first sub-pixel and the second sub-pixel;
The sixth sub-pixel is arranged in the second direction with respect to the third sub-pixel and the fourth sub-pixel;
The fifth region is a pixel contact region of the fifth sub-pixel;
The sixth region is a pixel contact region of the sixth sub-pixel;
The electro-optical device according to claim 1, wherein the lengths of the fifth region and the sixth region in the first direction are the same. A seventh region between the first subpixel and the second subpixel and the fifth subpixel in the second direction;
An eighth region between the third sub-pixel and the fourth sub-pixel and the sixth sub-pixel in the second direction;
The electro-optical device according to claim 1, wherein the seventh region and the eighth region have the same length in the second direction.   The third sub-pixel, the third region, and the fourth sub-line with respect to the first sub-pixel, the first region, the second sub-pixel, and the second region that are aligned in the first direction. The electro-optical device according to claim 1, wherein the pixels and the fourth region are arranged in parallel along the first direction. A first sub-pixel, a first region, a second sub-pixel, a second region, a third sub-pixel, a third region, a fourth sub-pixel, a fourth region, arranged in a first direction;
A fifth region, a sixth region, a fifth sub-pixel, a seventh region, an eighth region, and a sixth sub-pixel;
The fifth region, the first subpixel and the second subpixel, the sixth region, and the fifth subpixel are arranged in a second direction intersecting the first direction,
The seventh region, the third sub-pixel and the fourth sub-pixel, the eighth region, and the sixth sub-pixel are arranged in the second direction,
The first sub-pixel has a different color from the second sub-pixel,
The third sub-pixel has a different color from the fourth sub-pixel,
The fifth region is a pixel contact region of the first subpixel and the second subpixel,
The sixth region is a pixel contact region of the fifth sub-pixel;
The seventh region is a pixel contact region of the third subpixel and the fourth subpixel,
The eighth region is a pixel contact region of the sixth sub-pixel;
The electro-optical device, wherein the fifth region, the sixth region, the seventh region, and the eighth region have the same length in the second direction. A length of the first region, the second region, the third region, and the fourth region in the first direction;
6. The electro-optical device according to claim 5, wherein a length of the ninth region between the fifth sub-pixel and the sixth sub-pixel in the first direction is the same in the first direction.   The electro-optic according to any one of claims 1 to 6, wherein the first sub-pixel and the third sub-pixel have the same color, and the other sub-pixels have a different color from the first sub-pixel. apparatus.   The electro-optic according to any one of claims 1 to 6, wherein the second sub-pixel and the third sub-pixel have the same color, and the other sub-pixels have a different color from the second sub-pixel. apparatus.   The area of the fifth subpixel and the area of the sixth subpixel are larger than the areas of the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel, The electro-optical device according to any one of claims 2, 3, 5, and 6, wherein the fifth sub-pixel and the sixth sub-pixel are blue. The first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel include a light emitting element and a colored layer that converts light from the light emitting element into light of a predetermined wavelength region. Including
The electro-optical device according to claim 1, wherein the pixel contact region is a non-light emitting region.   The electro-optical device according to claim 10, wherein the light emitting element and the colored layer are provided on the same substrate. A plurality of display units arranged in a first direction and a second direction intersecting the first direction;
The display unit includes at least a first subpixel and a second subpixel of different colors,
In the display units adjacent to each other in the first direction, the length of the first region between the first subpixel and the second subpixel in the first direction is the same,
The electro-optical device, wherein the first region is a pixel contact region according to one of the first sub-pixel and the second sub-pixel. The display unit includes a third sub-pixel having a color different from that of the first sub-pixel and the second sub-pixel,
The first sub-pixel and the second sub-pixel are arranged in the first direction, and the third sub-pixel is arranged in the second direction with respect to the first sub-pixel and the second sub-pixel,
In the display unit adjacent in the first direction, the length of the first region in the first direction is the same as the length of the second region between the third sub-pixels in the first direction. ,
The electro-optical device according to claim 12, wherein the second region is a pixel contact region related to the third sub-pixel.   In the display units adjacent to each other in the second direction, the lengths in the second direction of the first subpixel and the third region between the second subpixel and the third subpixel are the same. The electro-optical device according to claim 13. A plurality of display units arranged in a first direction and a second direction intersecting the first direction;
The display unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel having different colors,
The first sub-pixel and the second sub-pixel are arranged in the first direction, and the third sub-pixel is arranged in the second direction with respect to the first sub-pixel and the second sub-pixel,
In the adjacent display units in the first direction, the length in the first direction of the first region between the first subpixel and the second subpixel, and the second length between the third subpixels. The length of the region in the first direction is the same;
In the display units adjacent to each other in the second direction, the lengths in the second direction of the first subpixel and the third region between the second subpixel and the third subpixel are the same. ,
The electro-optical device, wherein the third region is a pixel contact region according to any of the first subpixel, the second subpixel, and the third subpixel.   An electronic apparatus comprising the electro-optical device according to claim 1.   A head-mounted display comprising the electro-optical device according to claim 1, wherein at least one of the eyes recognizes a displayed image.

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