Display device and electronic apparatus

Abstract

To provide a display device that can achieve both a reduction in size of an electronic apparatus and higher quality of a displayed image.SOLUTION: A display device 80 includes: a first light-emitting element 830; a second light-emitting element 830; a first color filter 840 where light from the first light-emitting element 830 passes through; and a second color filter 840 where light from the second light-emitting element 830 passes through. The positional relation between the center of the first light-emitting element 830 and the center of the first color filter 840 is different from the positional relation between the center of the second light-emitting element 830 and the center of the second color filter 840. As the color filter 840 is disposed by aligning to an optical axis of the light-emitting element 830, the angle of view can be broadened while size of the light-emitting element 830 is maintained to a certain degree, and thereby, picture quality of a displayed image and reduction in size of the electronic apparatus can be both achieved.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a display device and an electronic device.

Background Art

[0002] In recent years, as a virtual image display device that enables the formation and observation of virtual images, such as a head-mounted display, a head-mounted display of a type that guides video light from a display element to the pupil of an observer has been proposed. In such a virtual image display device, as described in Patent Document 1, a see-through optical system that superimposes video light and external light is adopted.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the virtual image display device described in Patent Document 1, there has been a problem that it is difficult to achieve both the image quality of a display image and the miniaturization of an electronic device such as a head-mounted display. This is because in a conventional virtual image display device, when the display image is brightened and has a high resolution, the display device becomes large. In other words, conventionally, there has been a problem that it is difficult to realize a display device that is lightweight, compact enough not to give discomfort to a user when applied to an electronic device, and capable of displaying high-quality images.

Means for Solving the Problems

[0005] The present invention has been made to solve at least part of the above problems, and can be realized in the following forms or application examples.

[0006] (Application Example 1) The display device according to this application example includes a first light-emitting element, a second light-emitting element, a first color filter through which the light from the first light-emitting element passes, and a second color filter through which the light from the second light-emitting element passes, and is characterized in that the relative positional relationship between the center of the first light-emitting element and the center of the first color filter in a plan view is different from the relative positional relationship between the center of the second light-emitting element and the center of the second color filter in a plan view. With this configuration, since the color filter is arranged in alignment with the optical axis of the light-emitting element, the viewing angle can be widened while maintaining the size of the light-emitting element to a certain extent. Therefore, it is possible to achieve both high image quality of the displayed image and miniaturization of electronic devices such as head-mounted displays.

[0007] (Application Example 2) In the display device according to the above Application Example 1, the first light-emitting element, the first color filter, the second light-emitting element, and the second color filter are arranged in a display area, the optical axis of the light from the first light-emitting element is inclined toward the center of the display area from the normal line to the first light-emitting element, and it is preferable that the center of the first color filter in a plan view is shifted toward the center of the display area from the center of the first light-emitting element in a plan view. In a display device of an electronic device such as a head-mounted display having a condensing optical system, except for the central portion of the display area, the optical axis of the light from the light-emitting element is inclined toward the center of the display area. Therefore, with this configuration, since the color filter is arranged shifted toward the center with respect to the light-emitting element, the viewing angle can be widened while maintaining the size of the light-emitting element to a certain extent. That is, it is possible to achieve both miniaturization of an electronic device such as a head-mounted display having a condensing optical system and high quality of the image displayed on the electronic device.

[0008] (Application Example 3) In the display device described in the above Application Example 2, the second light-emitting element and the second color filter are arranged inside the first light-emitting element and the first color filter within the display area. When the deviation amount between the center of the first light-emitting element and the center of the first color filter in a plan view is defined as the first deviation amount, and the deviation amount between the center of the second light-emitting element and the center of the second color filter in a plan view is defined as the second deviation amount, it is preferable that the second deviation amount is smaller than the first deviation amount. In a display device of an electronic device such as a head-mounted display having a condensing optical system, the inclination of the optical axis from the light-emitting element becomes larger toward the outside of the display area. With this configuration, the deviation amount between the light-emitting element and the color filter is adjusted according to the position of the light-emitting element within the display area, so that the viewing angle can be widened while maintaining the size of the light-emitting element to a certain extent. That is, it is possible to achieve both miniaturization of an electronic device such as a head-mounted display having a condensing optical system and high quality of an image displayed on the electronic device.

[0009] (Application Example 4) In the display device described in the above Application Example 3, the display device further includes a separating portion that separates the color filters, and it is preferable that the difference between the first deviation amount and the second deviation amount is brought about by the width of the separating portion disposed between the first color filter and the second color filter. With this configuration, the positional relationship between the light-emitting element and the color filter can be easily adjusted only by changing the width of the separating portion.

[0010] (Application Example 5) In the display device described in the above Application Example 3, the color filter includes a red color filter, a green color filter, and a blue color filter, and it is preferable that the difference between the first deviation amount and the second deviation amount is brought about by the width of the separating portion disposed between the first color filter and the second color filter and separating the red color filter and the blue color filter. The visual sensitivity of a human is high for green. Therefore, with this configuration, a difference in deviation amount is created while avoiding the green color filter with high visual sensitivity, so that the possibility that the user notices the existence of the separating portion creating the difference can be suppressed.

[0011] (Application Example 6) In the display device described in the above Application Example 4 or 5, the light-emitting elements and the color filters are arranged in a matrix in the display area, and it is preferable that the positions in the row direction of the separation part that creates the difference between the first deviation amount and the second deviation amount are different between the first row and the second row adjacent to the first row. With this configuration, since the separation parts with different widths do not form a single row, it is possible to suppress the possibility that the user notices the existence of the separation part that creates the difference.

[0012] (Application Example 7) In the display device described in the above Application Example 3, it is preferable that the difference between the first deviation amount and the second deviation amount is brought about depending on the width of another color filter arranged between the first color filter and the second color filter. With this configuration, it is possible to easily adjust the positional relationship between the light-emitting element and the color filter only by changing the width of the color filter.

[0013] (Application Example 8) In the display device described in the above Application Example 7, the color filter preferably includes a red color filter, a green color filter, and a blue color filter, and the another color filter is a blue color filter. The human visual sensitivity to blue is low. Therefore, with this configuration, since the difference in the deviation amount is created using the blue color filter with low visual sensitivity, it is possible to suppress the possibility that the user notices the existence of the color filter that creates the difference.

[0014] (Application Example 9) In the display device described in the above Application Example 7 or 8, the light-emitting elements and the color filters are arranged in a matrix in the display area, and it is preferable that the position in the row direction of the another color filter is different between the first row and the second row adjacent to the first row. With this configuration, since another color filter with a different width does not form a single row, it is possible to suppress the possibility that the user notices the existence of another color filter that creates a difference.

[0015] (Application Example 10) An electronic device comprising the display device according to any one of the above Application Examples 1 to 9. With this configuration, it is possible to achieve both miniaturization of an electronic device such as a head-mounted display and high quality of an image displayed on the electronic device.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Modes for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale is different for each layer and each member in order to make each layer and each member large enough to be recognizable on the drawing.

[0018] (Embodiment 1) "Overview of the Electronic Device" FIG. 1 is a diagram for explaining the overview of the electronic device according to this embodiment. First, the overview of the electronic device will be explained with reference to FIG. 1.

[0019] The head-mounted display 100 is an example of the electronic device according to this embodiment and includes a display device 80 (see FIG. 3). As shown in FIG. 1, the head-mounted display 100 has an appearance like glasses. For a user wearing this head-mounted display 100, the user is made to visually recognize the video light GL (see FIG. 3) that becomes an image, and at the same time, the user is made to visually recognize the outside light in a see-through manner. In short, the head-mounted display 100 has a see-through function of overlapping and displaying the outside light and the video light GL, and is wide-angle, high-performance, and small and lightweight.

[0020] The head-mounted display 100 includes a see-through member 101 that covers in front of the user's eyes, a frame 102 that supports the see-through member 101, and a first built-in device portion 105a and a second built-in device portion 105b added to a portion from the cover portions at both left and right ends of the frame 102 to the rear vine portions (temples). The see-through member 101 is a thick and curved optical member (transmissive eye cover) that covers in front of the user's eyes and is divided into a first optical portion 103a and a second optical portion 103b. The first display unit 151, which is a combination of the first optical portion 103a on the left side in FIG. 1 and the first built-in device portion 105a, is a portion that displays a virtual image for the right eye in a see-through manner and functions as an electronic device with a display function even alone. Also, the second display unit 152, which is a combination of the second optical portion 103b on the right side in FIG. 1 and the second built-in device portion 105b, is a portion that forms a virtual image for the left eye in a see-through manner and functions as an electronic device with a display function even alone.

[0021] "Internal Structure of the Electronic Device" FIG. 2 is a diagram for explaining the internal structure of the electronic device according to the present embodiment. FIG. 3 is a diagram for explaining the optical system of the electronic device according to the present embodiment. Next, the internal structure and the optical system of the electronic device will be described with reference to FIGS. 2 and 3. In FIGS. 2 and 3, the first display device 151 is described as an example of the electronic device, but the second display device 152 has a structure that is almost symmetric about the left-right axis and is almost the same.

[0022] As shown in FIG. 2, the first display device 151 includes a projection and see-through device 70 and a display device 80 (see FIG. 3). The projection and see-through device 70 includes a prism 10 that is a light guide member, a light transmission member 50, and a projection lens 30 for imaging (see FIG. 3). The prism 10 and the light transmission member 50 are integrated by bonding, and are firmly fixed to the lower side of the frame 61 so that, for example, the upper surface 10e of the prism 10 is in contact with the lower surface 61e of the frame 61. The projection lens 30 is fixed to the end of the prism 10 via a lens barrel 62 that houses it. Among the projection and see-through device 70, the prism 10 and the light transmission member 50 correspond to the first optical portion 103a in FIG. 1, and the projection lens 30 of the projection and see-through device 70 and the display device 80 correspond to the first built-in device portion 105a in FIG. 1.

[0023] Among the projection and see-through device 70, the prism 10 is an arc-shaped member that is curved along the face in a plan view, and can be considered to be divided into a first prism portion 11 on the central side close to the nose and a second prism portion 12 on the peripheral side away from the nose. The first prism portion 11 is disposed on the light-emitting side, and has a first surface S11 (see FIG. 3), a second surface S12, and a third surface S13 as side surfaces having an optical function. The second prism portion 12 is disposed on the light-incident side, and has a fourth surface S14 (see FIG. 3) and a fifth surface S15 as side surfaces having an optical function. Among these, the first surface S11 and the fourth surface S14 are adjacent, the third surface S13 and the fifth surface S15 are adjacent, and the second surface S12 is disposed between the first surface S11 and the third surface S13. Further, the prism 10 has an upper surface 10e that is adjacent to the fourth surface S14 from the first surface S11.

[0024] The prism 10 is formed of a resin material that exhibits high light transmittance in the visible range, and is molded, for example, by injecting and solidifying a thermoplastic resin into a mold. The main body portion 10s of the prism 10 (see Fig. 3) is an integrally formed product, but can be considered as divided into a first prism portion 11 and a second prism portion 12. The first prism portion 11 enables the guiding and emitting of the video light GL and also enables the perspective of external light. The second prism portion 12 enables the incidence and guiding of the video light GL.

[0025] The light transmission member 50 is fixedly integrated with the prism 10. The light transmission member 50 is a member (auxiliary prism) that assists the perspective function of the prism 10. The light transmission member 50 exhibits high light transmittance in the visible range and is formed of a resin material having substantially the same refractive index as the main body portion 10s of the prism 10. The light transmission member 50 is formed, for example, by molding a thermoplastic resin.

[0026] As shown in Fig. 3, the projection lens 30 has, for example, three lenses 31, 32, and 33 along the incident-side optical axis. Each of the lenses 31, 32, and 33 is a lens that is rotationally symmetric about the central axis of the light incident surface of the lens, and at least one of them is an aspherical lens. The projection lens 30 makes the video light GL emitted from the display device 80 enter the prism 10 and form a reimage on the eye EY. In short, the projection lens 30 is a relay optical system for making the video light GL emitted from each pixel 820 of the display device 80 form a reimage on the eye EY via the prism 10. The projection lens 30 is held within the lens barrel 62, and the display device 80 is fixed to one end of the lens barrel 62. The second prism portion 12 of the prism 10 is connected to the lens barrel 62 that holds the projection lens 30 and indirectly supports the projection lens 30 and the display device 80.

[0027] In the display device 80, pixels 820 are arranged in an M×N matrix. M and N are integers of 2 or more. In this embodiment, as an example, M = 720 and N = 1280. Each pixel 820 includes p sub-pixels, and each sub-pixel includes a light-emitting element 830 and a color filter 840 through which light emitted from the light-emitting element 830 passes. The light-emitting element 830 emits white light, and in this embodiment, an organic EL element is used as an example. As the light-emitting element 830, an LED element, a semiconductor laser element, or the like can also be used. In this embodiment, p = 3, and each pixel 820 includes three light-emitting elements 830 and three color filters 840. The color filters 840 of each pixel 820 include a red color filter 840R, a green color filter 840G, and a blue color filter 840B, which convert the light from the corresponding light-emitting element 830 into red light, green light, and blue light to form video light GL. Alternatively, p = 4, and in addition to these, a color filter 840 for white light (virtually, a sub-pixel without a color filter) or a color filter 840 for yellow light may be provided for the color filter 840.

[0028] As shown in FIG. 3, the optical axes of the video light GL emitted from each pixel 820 (precisely, each sub-pixel) are shifted for each pixel 820 (precisely, for each sub-pixel). Since the display device 80 of this embodiment corrects this shift, it is possible to allow the user to visually recognize a bright and high-resolution image. Next, this point will be described.

[0029] "Configuration of the Display Device" FIG. 4 is a diagram for explaining the display device according to the present embodiment, (a) is an overall cross-sectional view, (b) is a plan view of a pixel, and (c) is a cross-sectional view of a pixel. FIG. 5 is a diagram for explaining the display device according to the comparative example, (a) is a plan view of a pixel, and (b) is a cross-sectional view of a pixel. Next, the display device according to the present embodiment will be described with reference to FIGS. 4 and 5. Note that although FIG. 5 is a diagram for explaining the comparative example, for the sake of easy understanding, the same names and reference numerals are used for the parts showing the same functions as those of the display device according to the present embodiment. Also, in the following figures, for the sake of easy understanding, an orthogonal coordinate system of x, y, and z is introduced. The axis along the normal line of the display device is defined as the z-axis, the axis along which the pixels 820 are arranged in the M-row vertical direction in the display device (the axis along the extending direction of the columns) is defined as the y-axis, and the axis along which the pixels 820 are arranged in the N-column horizontal direction in the display device (the axis along the extending direction of the rows) is defined as the x-axis. Also, in the following figures, for the sake of easy understanding, the scales are arbitrary, and the scales are different for each component even within one drawing.

[0030] As shown in FIG. 4(a), the display device 80 has a display area 810. The optical axis of the image light GL from the pixel 820 located at the center C of the display area 810 is substantially along the normal line of the display device, but the optical axis of the image light GL from the pixel 820 located at the left end L of the display device is inclined to the right from the normal line of the display device. Similarly, the optical axis of the image light GL from the pixel 820 located at the right end R of the display device is inclined to the left from the normal line of the display device. Thus, in the display device 80 of an electronic device such as the head-mounted display 100 having a condensing optical system, except for the central portion of the display area 810, the optical axis from the light-emitting element 830 is inclined toward the center side of the display area 810. Therefore, in the display device 80 of the present embodiment, the display area 810 is divided into 2q + 1 sub-areas, and in the pixels 820 belonging to different sub-areas, the relative positional relationship between the center of the light-emitting element 830 and the center of the color filter 840 is configured to be different. Note that q is an integer of 1 or more, and in the present embodiment, q = 20. That is, the display area 810 is divided into a total of 41 sub-areas, which include a first sub-area including the central portion C thereof, 20 sub-areas divided leftward along the x-axis from the first sub-area, and 20 sub-areas divided rightward along the x-axis from the first sub-area. In other words, there are 2q + 1 types of arrangements in which the relative positional relationship between the center of the light-emitting element 830 and the center of the color filter 840 is different within the display area 810.

[0031] FIG. 4(bL) is a plan view of the pixel 820 located on the left side of the center C of the display area 810, FIG. 4(bC) is a plan view of the pixel 820 located at the center C of the display area 810, and FIG. 4(bR) is a plan view of the pixel 820 located on the right side of the center C of the display area 810. FIG. 4(cL) is a cross-sectional view of the pixel 820 located on the left side of the center C of the display area 810, FIG. 4(cC) is a cross-sectional view of the pixel 820 located at the center C of the display area 810, and FIG. 4(cR) is a cross-sectional view of the pixel 820 located on the right side of the center C of the display area 810. The display device 80 according to the present embodiment includes a first light-emitting element 830 and a first color filter 840 through which the light from the first light-emitting element 830 passes. These are included, for example, in the pixel 820 located on the left side of the center C shown in FIG. 4(bL) and FIG. 4(cL), the pixel 820 located on the right side of the center C shown in FIG. 4(bR) and FIG. 4(cR), and the like. Further, the display device 80 includes a second light-emitting element 830 and a second color filter 840 through which the light from the second light-emitting element 830 passes. These are included, for example, in the pixel 820 located at the center C shown in FIG. 4(bC) and FIG. 4(cC). Therefore, for example, the second light-emitting element 830 and the second color filter 840 included in the pixel 820 located near the center C of the display area 810 are arranged inside the first light-emitting element 830 and the first color filter 840 within the display area 810.

[0032] And, as can be seen from FIG. 4, the relative positional relationship between the center of the first light-emitting element 830 and the center of the first color filter 840 in a plan view is different from the relative positional relationship between the center of the second light-emitting element 830 and the center of the second color filter 840 in a plan view. Further, as can be seen from FIG. 4(cL) and FIG. 4(cR), the optical axis of the light from the first light-emitting element 830 is inclined toward the center side of the display area 810 from the normal line to the first light-emitting element 830, and the center of the first color filter 840 in a plan view is shifted toward the center side of the display area 810 from the center of the first light-emitting element 830 in a plan view.

[0033] The deviation amount between the center of the first light-emitting element 830 and the center of the first color filter 840 in a plan view is defined as the first deviation amount, and when the deviation amount between the center of the second light-emitting element 830 and the center of the second color filter 840 in a plan view is defined as the second deviation amount, the second deviation amount is smaller than the first deviation amount. As an example, in the pixel 820 located in the central portion C shown in FIGS. 4(bC) and 4(cC), the second deviation amount is zero, and the center of the second light-emitting element 830 and the center of the second color filter 840 almost coincide. On the other hand, in the pixel 820 located on the left side of the central portion C shown in FIGS. 4(bL) and 4(cL) or in the pixel 820 located on the right side of the central portion C shown in FIGS. 4(bR) and 4(cR), the first deviation amount is a finite positive value, and the second deviation amount is smaller than the first deviation amount.

[0034] In short, the color filter 840 is arranged for each sub-area in alignment with the optical axis from the light-emitting element 830. Also, as the distance from the central portion C of the display area 810 increases, the color filter 840 is arranged with a greater deviation toward the center side of the display area 810 with respect to the light-emitting element 830. In the display device 80 of the electronic device having the condensing optical system, the inclination of the optical axis from the light-emitting element 830 becomes larger toward the outside of the display area 810. However, in the display device 80, the deviation amount between the light-emitting element 830 and the color filter 840 is adjusted according to the position of the light-emitting element 830 within the display area 810.

[0035] As a result of such a configuration, it is possible to widen the viewing angle while maintaining the size of the light-emitting element 830 to a certain extent. The viewing angle is the angle θc (see FIG. 8) formed by the optical axis from the pixel 820 and the normal line of the display device. This point will be described by comparing it with a comparative example. As shown in FIG. 5, in the conventional display device, the positional relationship between the light-emitting element 830 and the color filter 840 was the same everywhere in the display area 810. That is, for any pixel 820 in the display area 810, the center of the light-emitting element 830 and the center of the color filter 840 coincided. Therefore, as the resolution increased, the viewing angle became larger toward the outside of the display area 810, and the light-emitting element 830 had to be made smaller. As a result, the image light GL became weak, resulting in a dark display. That is, conventionally, it was impossible to achieve both high resolution and bright display. On the other hand, in the display device of the present embodiment, even if the resolution is increased and the viewing angle becomes larger outside the display area 810, the size of the light-emitting element 830 can be maintained to a certain extent, and the intensity of the image light GL can be maintained. In other words, in the display device according to the present embodiment, high resolution and bright display are compatible, and miniaturization of an electronic device such as the head-mounted display 100 having a condensing optical system and high quality of the image displayed on the electronic device are compatible. As an example, when the length of the sub-pixel in the row direction is 7.5 micrometers, the width of the sub-pixel in the column direction is 2.5 micrometers, and the length of the light-emitting element 830 in the row direction is 6.1 micrometers, the width of the light-emitting element 830 in the column direction in the comparative example is 1.1 micrometers, but the width of the light-emitting element 830 in the column direction in the present embodiment is 1.8 micrometers. That is, the area of the light-emitting element 830 in the present embodiment can be 1.64 times that of the light-emitting element 830 in the comparative example, enabling low-voltage driving and bright display.

[0036] "Sub-area boundary" FIG. 6 is a diagram for explaining the configuration of the sub-area boundary. (a) is a plan view of a pixel near the sub-area boundary, and (b) is a cross-sectional view of a pixel near the sub-area boundary. FIG. 7 is a diagram for explaining the arrangement of the sub-area boundary. Next, with reference to FIGS. 6 and 7, the configuration and arrangement of the sub-area boundary SB will be described. The sub-area boundary SB is the boundary between one sub-area and the adjacent sub-area.

[0037] Among the pixels 820 located within one sub-area, the positional relationship between the light-emitting element 830 and the color filter 840 is the same. On the other hand, as shown in FIG. 6, the positional relationship between the light-emitting element 830 and the color filter 840 differs between the pixels 820 belonging to different sub-areas. In the example of FIG. 6, for the pixel 820 to the left of the sub-area boundary SB, the center of the light-emitting element 830 and the center of the color filter 840 substantially coincide, but for the pixel 820 to the right, the center of the color filter 840 is shifted to the left with respect to the center of the light-emitting element 830. Next, the configuration of the sub-area boundary SB will be described.

[0038] The display device 80 according to the present embodiment includes a separation portion 850 that separates the color filters 840. The separation portion 850 may be a member that suppresses the mixing of the color materials of the color filters 840, a bank when the color filters 840 are formed by a printing method, or a so-called black matrix for avoiding color mixing. In the example of FIG. 6, the amount of deviation between the center of the first light-emitting element 830 belonging to the right sub-area and the center of the first color filter 840 is the first deviation amount, and the amount of deviation between the center of the second light-emitting element 830 belonging to the left sub-area and the center of the second color filter 840 is the second deviation amount. As described above, the second deviation amount is smaller than the first deviation amount, and the difference between the first deviation amount and the second deviation amount is brought about by the width of the separation portion 850 disposed between the first color filter 840 and the second color filter 840. The separation portion 850 that separates the sub-pixels located within one sub-area has a standard width W BS which is constant. On the other hand, even for adjacent sub-pixels, if the sub-areas to which they belong are different, the separation portion 850 has a changed width W BC The standard width W BS and the changed width W BC have different widths. In the present embodiment, the changed width W BC is the standard width W BSIt is narrower. In this way, by simply changing the width of the separation part 850 of the sub-area boundary SB, the positional relationship between the light-emitting element 830 and the color filter 840 can be easily adjusted.

[0039] Furthermore, in order to suppress the possibility that the user notices the existence of the separation part 850 where the difference is created, the difference between the first deviation amount and the second deviation amount is arranged between the first color filter 840 and the second color filter 840, and is brought about by changing the width of the separation part 850 that separates the red color filter 840R and the blue color filter 840B. This is because the human visual sensitivity is high for green. If a difference in the deviation amount is created while avoiding the green color filter 840G with high visual sensitivity, it is difficult to notice the existence of the separation part 850 with the change width W BC because it is difficult to notice the existence of the separation part 850 with the change width W.

[0040] In this embodiment, N = 1280 pixels 820 are arranged in the column direction of the display area 810, and the display area 810 is divided into 2q + 1 sub-areas (q = 20). The 40-column pixel 820 group located at the central part C of the display area 810 constitutes the central sub-area, and the deviation amount is set to zero. Each of the 40 sub-areas other than the central sub-area is composed of a 31-column pixel 820 group. And the change width W BC is 0.025 micrometers. Therefore, the deviation amount increases by 0.025 micrometers each time it moves from the central sub-area to the sub-area on its side, and the deviation amount in the outermost sub-area is 0.5 micrometers.

[0041] As shown in FIG. 7, it is preferable that the position in the row direction of the separation part 850 (sub-area boundary) that creates the difference between the first deviation amount and the second deviation amount is different between the first row and the second row adjacent to the first row. In this way, the separation parts 850 (sub-area boundaries SB) with different widths do not form a single row, so the possibility that the user notices the existence of the separation part 850 where the difference is created can be suppressed. In this embodiment, the sub-area boundary SB is shifted by one pixel 820 for each row, and one cycle is formed in three rows.

[0042] "Displacement amount" FIG. 8 is a diagram for explaining the relationship between the displacement amount and the viewing angle. Next, with reference to FIG. 8, the relationship between the displacement amount and the viewing angle will be explained.

[0043] The displacement amount between the light-emitting element 830 and the color filter 840 in each sub-area is determined by where the sub-area is located in the display area 810 and what the viewing angle from the sub-area is. As shown in FIG. 8, a sealing layer 860 is formed on the upper surface of the light-emitting element 830, and a color filter 840 is formed on the upper surface of the sealing layer 860. A filling layer 870 is formed on the further upper surface of the color filter 840, and from the sealing layer 860 to the filling layer 870 is mainly composed of an organic substance. Let the refractive index in these three layers be n A Let it be. A cover glass 880 is disposed on the upper surface of the filling layer 870, and in this embodiment, quartz glass is used. Let the refractive index of this cover glass 880 be n B Let it be. The upper surface of the cover glass 880 is air 890, and let the refractive index of the air 890 be n C Let it be. Further, let the emission angle (the inclination angle from the normal of the display device 80) of the video light GL from the light-emitting element 830 be θ A Let it be, and let the emission angle (the inclination angle from the normal of the display device 80) of the video light GL from the filling layer 870 to the cover glass 880 be θ B Let it be, and let the viewing angle (the inclination angle from the normal of the display device 80) of the video light GL from the cover glass 880 to the air 890 be θ C Let it be. At this time, the law of refraction is expressed by Equation 1.

[0044]

Equation

[0045] On the other hand, if the displacement amount of the color filter 840 with respect to the light-emitting element 830 is L(x), and the distance from the upper surface of the light-emitting element 830 to the upper surface of the color filter 840 is Z0, then the relationship between L(x), Z0, and θ A is expressed by Equation 2.

[0046]

Equation

[0047] The drawing angle θ is obtained from Equation 1 and Equation 2. C The deviation amount L(x) has the relationship shown in Equation 3 with respect to the drawing angle θ.

[0048]

Number

[0049] Ideally, the relationship of Equation 3 is generally satisfied in each sub-area. In this embodiment, Equation 3 is satisfied in the outermost sub-area. Specifically, n A = 1.80, n B = 1.48, n C = 1.00, θ A = 6.0°, θ B = 7.3°, θ C = 10.8°, L(x = 4.68357 mm, outermost sub-area) = 0.5 micrometer. As a result, the drawing angle from the outermost sub-area substantially coincides with the optical axis in the design of the lens 33.

[0050] (Embodiment 2) 「Form with Changed Sub-Area Boundary」 FIG. 9 is a diagram for explaining the configuration of the sub-area boundary of the display device according to Embodiment 2. (a) is a plan view of pixels near the sub-area boundary, and (b) is a cross-sectional view of pixels near the sub-area boundary. Hereinafter, the display device 80 according to Embodiment 2 will be described with reference to FIG. 9. Note that the same reference numerals are given to the same components as those in Embodiment 1, and redundant explanations are omitted.

[0051] This embodiment (Fig. 9) differs from Embodiment 1 (Fig. 6) in the configuration of the sub-area boundary SB. Other configurations are substantially the same as those in Embodiment 1. In Embodiment 1 (Fig. 6), the sub-area boundary SB was formed by changing the width of the separation part 850. In contrast, as shown in Fig. 9, in this embodiment, the width of the separation part 850 is the same, and the difference is that the sub-area boundary SB is formed by changing the width of the color filter 840. Other configurations are the same as those in Embodiment 1.

[0052] In the example of Fig. 9, the deviation amount between the center of the first light-emitting element 830 belonging to the right sub-area and the center of the first color filter 840 is the first deviation amount, and the deviation amount between the center of the second light-emitting element 830 belonging to the left sub-area and the center of the second color filter 840 is the second deviation amount. As described above, the second deviation amount is smaller than the first deviation amount, and the difference between the first deviation amount and the second deviation amount is brought about by the width of another color filter 840 arranged between the first color filter 840 and the second color filter 840. The color filters 840 of the sub-pixels located within one sub-area are constant except for the row of sub-pixels (sub-pixels having another color filter 840) at the outermost end of that sub-area. For example, in the right sub-area of Fig. 9, the standard width W CFRS of the red color filter 840R is equal to the standard width W CFGS of the green color filter 840G. On the other hand, for the blue color filter 840B, the change width W CFBC of the row of blue color filters 840B forming the sub-area boundary SB is different from the standard width W CFBS of the other blue color filters 840B. The standard width W CFBS of the blue color filter 840B is equal to the standard width W CFRS of the red color filter 840R and the standard width W CFGS of the green color filter 840G. In this embodiment, the change width W CFBC of the row of blue color filters 840B forming the sub-area boundary is the standard width W CFRS of the red color filter 840R or the standard width W CFGSThe standard width W of the cyan color filter 840B CFBS is narrower than that. In this way, by simply changing the width of the color filter 840 forming the sub-area boundary, the positional relationship between the light-emitting element 830 and the color filter 840 can be easily adjusted.

[0053] Furthermore, in order to suppress the possibility that the user notices the existence of the color filter 840 creating the difference, it is preferable that the difference between the first deviation amount and the second deviation amount is brought about by the cyan color filter 840B disposed between the first color filter 840 and the second color filter 840. This is because, since the human visual sensitivity to blue is low, creating a difference in the deviation amount with the cyan color filter 840B having low visual sensitivity can suppress the possibility of noticing the existence of the color filter 840 creating the difference. Even with such a configuration, the same effect as that of Embodiment 1 can be obtained. Note that the present invention is not limited to the above-described embodiments, and various changes and improvements can be made to the above-described embodiments. Modifications will be described below.

[0054] (Modification 1) "Form 1 in which the arrangement of the sub-area boundaries is different" FIG. 10 is a diagram for explaining the arrangement of the sub-area boundary SB of the display device according to Modification 1. In Embodiment 1 (FIG. 7), the sub-area boundary SB formed a cycle in 3 rows. In contrast, in this modification, as shown in FIG. 10, the cycle of the sub-area boundary SB is 2 rows. In addition to this, the cycle of the sub-area boundary SB may be 4 rows or any number of rows. Also, they may be randomly arranged for each row. In this case, it is sufficient that the average value for each row corresponds to the position of the sub-area boundary SB discussed in Embodiment 1.

[0055] (Modification 2) "Form 2 in which the arrangement of the sub-area boundaries is different" FIG. 11 is a diagram for explaining the arrangement of the sub-area boundaries of the display device according to Modification 2. In Embodiment 1 (FIG. 7), the sub-area boundary SB formed a cycle in three rows. In contrast, in this modification, as shown in FIG. 11, the sub-area boundary SB is a straight line in one column. Such a form may be adopted.

Description of Reference Numerals

[0056] C... Central portion, SB... Sub-area boundary, S11... First surface, S12... Second surface, S13... Third surface, S14... Fourth surface, S15... Fifth surface, 10... Prism, 10e... Upper surface, 10s... Main body portion, 11... First prism portion, 12... Second prism portion, 30... Projection lens, 31... Lens, 32... Lens, 33... Lens, 50... Light transmission member, 61... Frame, 61e... Lower surface, 62... Lens barrel, 70... Projection and perspective device, 80... Display device, 100... Head-mounted display, 101... Perspective member, 102... Frame, 103a... First optical portion, 103b... Second optical portion, 105a... First built-in device portion, 105b... Second built-in device portion, 151... First display unit, 152... Second display unit, 810... Display area, 820... Pixel, 830... Light-emitting element, 840... Color filter, 840B... Blue color filter, 840R... Red color filter, 840G... Green color filter, 850... Separation portion, 860... Sealing layer, 870... Filling layer, 880... Cover glass, 890... Air.

Claims

1. a first light-emitting element; a second light-emitting element; a first color filter through which light from the first light-emitting element passes; a second color filter through which light from the second light-emitting element passes, and a display device, wherein a relative positional relationship between a center of the first light-emitting element and a center of the first color filter in a plan view is different from a relative positional relationship between a center of the second light-emitting element and a center of the second color filter in the plan view.

2. the first light-emitting element, the first color filter, the second light-emitting element, and the second color filter are arranged in a display area, an optical axis of the first light-emitting element is inclined toward a center side of the display area from a normal line to the first light-emitting element, and the display device according to claim 1, wherein a center of the first color filter in the plan view is shifted toward the center side of the display area more than a center of the first light-emitting element in the plan view.

3. the second light-emitting element and the second color filter are arranged inside the first light-emitting element and the first color filter in the display area, and when a shift amount between the center of the first light-emitting element and the center of the first color filter in the plan view is defined as a first shift amount, and a shift amount between the center of the second light-emitting element and the center of the second color filter in the plan view is defined as a second shift amount, the second shift amount is smaller than the first shift amount. The display device according to claim 2, characterized in that

4. further comprising a separation part that separates the color filters, and the display device according to claim 3, wherein a difference between the first shift amount and the second shift amount is caused by a width of the separation part arranged between the first color filter and the second color filter.

5. the color filter includes a red color filter, a green color filter, and a blue color filter, and the display device according to claim 3, wherein a difference between the first shift amount and the second shift amount is caused by a width of the separation part arranged between the first color filter and the second color filter and separating the red color filter and the blue color filter.

6. the light-emitting elements and the color filters are arranged in a matrix in the display area, The position in the row direction of the separating portion that creates the difference between the first deviation amount and the second deviation amount is different between the first row and the second row adjacent to the first row, in the display device according to claim 4 or 5.

7. The difference between the first deviation amount and the second deviation amount is brought about depending on the width of another color filter disposed between the first color filter and the second color filter, in the display device according to claim 3.

8. The color filter includes a red color filter, a green color filter, and a blue color filter. The display device according to claim 7, wherein the another color filter is the blue color filter.

9. The light-emitting element and the color filter are arranged in a matrix in the display area. The display device according to claim 7 or 8, wherein the position in the row direction of the another color filter is different between the first row and the second row adjacent to the first row.

10. An electronic device, characterized by comprising the display device according to any one of claims 1 to 9.

Images