Display devices and electronic devices

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] This invention relates to a display device and electronic equipment. [Background technology]

[0002] In recent years, head-mounted displays have been proposed as virtual image display devices that enable the formation and observation of virtual images, such as head-mounted displays, which guide image light from a display element to the observer's eyes. As described in Patent Document 1, such virtual image display devices employ a see-through optical system that superimposes image light and ambient light. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2013-200553 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] However, the virtual image display device described in Patent Document 1 had the problem of being difficult to achieve both high image quality and miniaturization of electronic devices such as head-mounted displays. This is because, in conventional virtual image display devices, increasing the brightness and resolution of the displayed image would increase the size of the display device. In other words, conventionally, there has been a problem in realizing a display device that is lightweight and compact enough not to cause discomfort to the user when adapted to electronic devices, while also displaying high-quality images. [Means for solving the problem]

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

[0006] (Application Example 1) The display device relating to this application example comprises a first light-emitting element, a second light-emitting element, a first color filter through which light from the first light-emitting element passes, and a second color filter through which light from the second light-emitting element passes, 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, the color filter is positioned in line with the optical axis from the light-emitting element, allowing the field of view to 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 and miniaturization of electronic devices such as head-mounted displays.

[0007] (Application Example 2) In the display device described in Application Example 1 above, the first light-emitting element, the first color filter, the second light-emitting element, and the second color filter are arranged in the display area, the optical axis from the first light-emitting element is inclined toward the center of the display area from the normal 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 than the center of the first light-emitting element in a plan view. In display devices such as head-mounted displays with a light-gathering optical system, the optical axis from the light-emitting element is tilted toward the center of the display area, except for the center of the display area. Therefore, with this configuration, the color filter is positioned offset toward the center relative to the light-emitting element, making it possible to widen the field of view while maintaining the size of the light-emitting element to a certain extent. In other words, it is possible to achieve both miniaturization of electronic devices such as head-mounted displays with a light-gathering optical system and high image quality displayed on such devices.

[0008] (Application Example 3) In the display device described in Application Example 2 above, the second light-emitting element and the second color filter are positioned inside the display area relative to the first light-emitting element and the first color filter. When the first displacement is defined as the difference between the center of the first light-emitting element and the center of the first color filter in a plan view, and the second displacement is defined as the difference between the center of the second light-emitting element and the center of the second color filter in a plan view, it is preferable that the second displacement is smaller than the first displacement. In display devices such as head-mounted displays with a light-gathering optical system, the tilt of the optical axis from the light-emitting element increases towards the outer edges of the display area. With this configuration, the amount of misalignment 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 field of view can be widened while maintaining the size of the light-emitting element to a certain extent. In other words, it is possible to achieve both miniaturization of electronic devices such as head-mounted displays with a light-gathering optical system and high image quality displayed on those devices.

[0009] (Application Example 4) In the display device described in Application Example 3 above, it is preferable that a separation section for separating the color filters is further provided, and the difference between the first amount of misalignment and the second amount of misalignment is brought about by the width of the separation section located 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 simply by changing the width of the separation section.

[0010] (Application Example 5) In the display device described in Application Example 3 above, 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 shift amount and the second shift amount is brought about by the width of the separation portion that is placed between the first color filter and the second color filter and separates the red color filter and the blue color filter. Humans have a high visual sensitivity to green. Therefore, this configuration avoids the green color filter, which has high visual sensitivity, and creates a difference in the amount of shift, thus reducing the possibility that the user will notice the separation area that is creating the difference.

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

[0012] (Application Example 7) In the display device according to Application Example 3 above, the difference between the first shift amount and the second shift amount is preferably 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 simply by changing the width of the color filter.

[0013] (Application Example 8) In the display device according to Application Example 7 above, 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 visual sensitivity of a human is low for blue. Therefore, with this configuration, since the difference in the shift amount is created using a blue color filter with low visual sensitivity, it is possible to suppress the possibility that the user notices the presence of the color filter that creates the difference.

[0014] (Application Example 9) In the display device according to Application Example 7 or 8 above, the light-emitting elements and the color filters are arranged in a matrix in the display area, and the position in the row direction of the another color filter is preferably different between the first row and the second row adjacent to the first row. This configuration prevents different color filters of varying widths from being in a single row, thus reducing the likelihood that the user will notice the presence of other color filters creating the difference.

[0015] (Application Example 10) An electronic device characterized by being equipped with a display device as described in any one of the above application examples 1 to 9. This configuration makes it possible to achieve both miniaturization of electronic devices such as head-mounted displays and high image quality on those devices. [Brief explanation of the drawing]

[0016] [Figure 1] A diagram illustrating the outline of the electronic device according to this embodiment. [Figure 2] A diagram illustrating the internal structure of the electronic device according to this embodiment. [Figure 3] A diagram illustrating the optical system of the electronic device according to this embodiment. [Figure 4] A diagram illustrating the display device according to this embodiment. [Figure 5] A diagram illustrating the display device related to the comparative example. [Figure 6] A diagram illustrating the configuration of sub-area boundaries. [Figure 7] A diagram illustrating the arrangement of sub-area boundaries. [Figure 8] A diagram illustrating the relationship between the amount of shift and the field of view. [Figure 9] A diagram illustrating the configuration of the sub-area boundary of the display device according to Embodiment 2. [Figure 10] A diagram illustrating the arrangement of sub-area boundaries of the display device related to Modification Example 1. [Figure 11] A diagram illustrating the arrangement of sub-area boundaries of the display device related to Modification Example 2. [Modes for carrying out the invention]

[0017] Embodiments of the present invention will be described below with reference to the drawings. In the following drawings, each layer and component is scaled differently in order to make them recognizable on the drawings.

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

[0019] The head-mounted display 100 is an example of an electronic device according to this embodiment and includes a display device 80 (see Figure 3). As shown in Figure 1, the head-mounted display 100 has the appearance of eyeglasses. The head-mounted display 100 allows the user wearing it to view the image light GL (see Figure 3), which is the image, while also allowing the user to see through to the ambient light. In short, the head-mounted display 100 has a see-through function that displays ambient light and the image light GL superimposed, and is compact and lightweight while having a wide field of view and high performance.

[0020] The head-mounted display 100 comprises a transparent member 101 that covers the user's eyes, a frame 102 that supports the transparent member 101, and a first built-in device section 105a and a second built-in device section 105b attached to the frame 102 from the left and right cover sections to the rear temple section. The transparent member 101 is a thick, curved optical member (transparent eye cover) that covers the user's eyes and is divided into a first optical section 103a and a second optical section 103b. In Figure 1, the first display device 151, which combines the first optical section 103a and the first built-in device section 105a on the left side, is the part 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 on its own. Furthermore, the second display unit 152, which combines the second optical unit 103b and the second internal device unit 105b on the right side of Figure 1, is a see-through unit that forms a virtual image for the left eye and functions as an electronic device with a display function even when used independently.

[0021] "Internal structure of electronic devices" Figure 2 is a diagram illustrating the internal structure of the electronic device according to this embodiment. Figure 3 is a diagram illustrating the optical system of the electronic device according to this embodiment. Next, the internal structure and optical system of the electronic device will be explained with reference to Figures 2 and 3. Although Figures 2 and 3 illustrate the first display device 151 as an example of the electronic device, the second display device 152 has almost the same structure, being symmetrical.

[0022] As shown in Figure 2, the first display device 151 comprises a projection viewing device 70 and a display device 80 (see Figure 3). The projection viewing device 70 comprises a prism 10, which is a light guide member, a light transmitting member 50, and a projection lens 30 for image formation (see Figure 3). The prism 10 and the light transmitting member 50 are integrated by joining, and are firmly fixed to the underside of the frame 61 such that, for example, the upper surface 10e of the prism 10 and the lower surface 61e of the frame 61 are in contact. The projection lens 30 is fixed to the end of the prism 10 via a lens barrel 62 that houses it. The prism 10 and the light transmitting member 50 of the projection viewing device 70 correspond to the first optical part 103a in Figure 1, and the projection lens 30 and the display device 80 of the projection viewing device 70 correspond to the first built-in device part 105a in Figure 1.

[0023] Of the projection viewing device 70, the prism 10 is an arc-shaped member that is curved to conform to the face in a planar view, and can be considered as being divided into a first prism portion 11 on the central side near the nose and a second prism portion 12 on the peripheral side away from the nose. The first prism portion 11 is located on the light emission side and has a first surface S11 (see Figure 3), a second surface S12, and a third surface S13 as sides having optical functions. The second prism portion 12 is located on the light incidence side and has a fourth surface S14 (see Figure 3) and a fifth surface S15 as sides having optical functions. Of 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 positioned between the first surface S11 and the third surface S13. In addition, the prism 10 has an upper surface 10e adjacent to the first surface S11 to the fourth surface S14.

[0024] The prism 10 is made of a resin material that exhibits high light transmittance in the visible range, and is molded, for example, by injecting and solidifying thermoplastic resin into a mold. The main body portion 10s of the prism 10 (see Figure 3) is a single-piece molded product, but can be considered separately as a first prism portion 11 and a second prism portion 12. The first prism portion 11 enables the guidance and emission of image light GL, as well as the transmission of ambient light. The second prism portion 12 enables the incidence and guidance of image light GL.

[0025] The light-transmitting member 50 is integrally fixed with the prism 10. The light-transmitting member 50 is an auxiliary prism that assists the transparency function of the prism 10. The light-transmitting member 50 exhibits high light transmittance in the visible range and is formed of a resin material having approximately the same refractive index as the main body portion 10s of the prism 10. The light-transmitting member 50 is formed, for example, by molding a thermoplastic resin.

[0026] As shown in Figure 3, the projection lens 30 has, for example, three lenses 31, 32, and 33 along the incident optical axis. Each lens 31, 32, and 33 is rotationally symmetric with respect to the central axis of the lens's light incident surface, and at least one of them is an aspherical lens. The projection lens 30 directs the image light GL emitted from the display device 80 into the prism 10 and re-images it onto the eye EY. In short, the projection lens 30 is a relay optical system for re-imagesing the image light GL emitted from each pixel 820 of the display device 80 onto 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] The display device 80 has pixels 820 arranged in an M x N matrix. M and N are integers greater than or equal to 2, and in this embodiment, as an example, M=720 and N=1280. Each pixel 820 contains p subpixels, and each subpixel comprises 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. Other elements such as LED elements and semiconductor laser elements can be used as the light-emitting element 830. In this embodiment, p=3, and each pixel 820 contains three light-emitting elements 830 and three color filters 840. The color filter 840 of each pixel 820 includes 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 the image light GL. In addition to the above, with p=4, the color filter 840 may also include a color filter 840 for white light (effectively a subpixel without a color filter 840), or it may also include a color filter 840 for yellow light.

[0028] As shown in Figure 3, the optical axis of the image light GL emitted from each pixel 820 (more precisely, each subpixel) is shifted for each pixel 820 (more precisely, for each subpixel). The display device 80 of this embodiment corrects this shift, making it possible to display a bright, high-resolution image to the user. This point will be explained next.

[0029] "Display device configuration" Figure 4 illustrates the display device according to this embodiment, where (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. Figure 5 illustrates the display device according to a comparative example, where (a) is a plan view of a pixel and (b) is a cross-sectional view of a pixel. Next, the display device according to this embodiment will be described with reference to Figures 4 and 5. Although Figure 5 illustrates a comparative example, for the sake of clarity, the same names and reference numbers are used for parts that have the same function as the display device according to this embodiment. Furthermore, in the following figures, for the sake of clarity, a Cartesian coordinate system of x, y, and z is introduced, with the axis along the normal of the display device being the z-axis, the axis along which pixels 820 are arranged vertically in M ​​rows on the display device (the axis along the direction of column extension) being the y-axis, and the axis along which pixels 820 are arranged horizontally in N columns on the display device (the axis along the direction of row extension) being the x-axis. Furthermore, in the following diagrams, the scale is arbitrary, and different scales are used for each part within a single drawing, in order to make the explanation easier to understand.

[0030] As shown in Figure 4(a), the display device 80 has a display area 810. The optical axis of the image light GL from a pixel 820 located in the central part C of the display area 810 is approximately aligned with the normal of the display device, but the optical axis of the image light GL from a pixel 820 located at the left end L of the display device is tilted to the right from the normal of the display device. Similarly, the optical axis of the image light GL from a pixel 820 located at the right end R of the display device is tilted to the left from the normal of the display device. Thus, in the display device 80 of an electronic device such as a head-mounted display 100 having a light-gathering optical system, the optical axis from the light-emitting element 830 is tilted toward the center of the display area 810, except for the central part of the display area 810. Therefore, in the display device 80 of this embodiment, the display area 810 is divided into 2q+1 sub-areas, and the relative positional relationship between the center of the light-emitting element 830 and the center of the color filter 840 is different for pixels 820 belonging to different sub-areas. Note that q is an integer of 1 or more, and in this embodiment q=20. In other words, the display area 810 is divided into a total of 41 sub-areas: a first sub-area including its central part C, 20 sub-areas divided to the left along the x-axis from the first sub-area, and 20 sub-areas divided to the right along the x-axis from the first sub-area. In other words, there are 2q+1 different arrangements within the display area 810 in which the relative positional relationship between the center of the light-emitting element 830 and the center of the color filter 840 differs.

[0031] Figure 4(bL) is a plan view of a pixel 820 located to the left of the central part C of the display area 810, Figure 4(bC) is a plan view of a pixel 820 located in the central part C of the display area 810, and Figure 4(bR) is a plan view of a pixel 820 located to the right of the central part C of the display area 810. Figure 4(cL) is a cross-sectional view of a pixel 820 located to the left of the central part C of the display area 810, Figure 4(cC) is a cross-sectional view of a pixel 820 located in the central part C of the display area 810, and Figure 4(cR) is a cross-sectional view of a pixel 820 located to the right of the central part C of the display area 810. The display device 80 according to this embodiment includes a first light-emitting element 830 and a first color filter 840 through which light from the first light-emitting element 830 passes. These include, for example, the pixels 820 located to the left of the central part C shown in Figures 4(bL) and 4(cL), and the pixels 820 located to the right of the central part C shown in Figures 4(bR) and 4(cR), etc. The display device 80 also includes a second light-emitting element 830 and a second color filter 840 through which light from the second light-emitting element 830 passes. These include, for example, the pixels 820 located in the central part C shown in Figures 4(bC) and 4(cC). Therefore, for example, the second light-emitting element 830 and the second color filter 840 included in the pixels 820 located near the central part C of the display area 810 are positioned inside the display area 810 compared to the first light-emitting element 830 and the first color filter 840.

[0032] As can be seen from Figure 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. Furthermore, as can be seen from Figures 4(cL) and 4(cR), the optical axis from the first light-emitting element 830 is inclined toward the center of the display area 810 from the normal 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 of the display area 810 than the center of the first light-emitting element 830 in a plan view.

[0033] When the difference 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 shift amount, and the difference 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 shift amount, the second shift amount is smaller than the first shift amount. For example, in the pixel 820 located in the central part C shown in Figure 4(bC) and Figure 4(cC), the second shift amount is zero, and the center of the second light-emitting element 830 and the center of the second color filter 840 are almost identical. In contrast, in the pixel 820 located to the left of the central part C shown in Figure 4(bL) and Figure 4(cL), and in the pixel 820 located to the right of the central part C shown in Figure 4(bR) and Figure 4(cR), the first shift amount is a finite positive value, and the second shift amount is smaller than the first shift amount.

[0034] In short, the color filters 840 are positioned in each sub-area in accordance with the optical axis from the light-emitting element 830. Furthermore, as you move away from the center C of the display area 810, the color filters 840 are positioned more significantly offset from the light-emitting element 830 towards the center of the display area 810. In the display device 80 of the electronic device having a light-gathering optical system, the tilt of the optical axis from the light-emitting element 830 becomes greater towards the outside of the display area 810, but in the display device 80, the amount of offset 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 this configuration, the field of view can be widened while maintaining the size of the light-emitting element 830 to a certain extent. The field of view is the angle θc (see Figure 8) that the optical axis from the pixel 820 makes with the normal of the display device. This point will be explained in comparison with the comparative example. As shown in Figure 5, in conventional display devices, the positional relationship between the light-emitting element 830 and the color filter 840 was the same throughout the display area 810. That is, the center of the light-emitting element 830 and the center of the color filter 840 coincided at any pixel 820 in the display area 810. Therefore, as the resolution was increased, the field of view became larger towards the outside of the display area 810, forcing the light-emitting element 830 to be made smaller. As a result, the image light GL became weaker, resulting in a darker display. In other words, conventionally, it was not possible to achieve both high resolution and a bright display. In contrast, in the display device of this embodiment, even if the resolution is increased and the field of view becomes larger outside the display area 810, the size of the light-emitting element 830 can be maintained to a certain extent, and the strength of the image light GL can be maintained. In other words, the display device according to this embodiment achieves both high resolution and bright display, enabling miniaturization of electronic devices such as a head-mounted display 100 with a light-gathering optical system and high-quality images displayed on the electronic device. For example, if the length of the subpixel in the row direction is 7.5 micrometers, the width of the subpixel 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, then the width of the light-emitting element 830 in the column direction of the comparative example is 1.1 micrometers, while the width of the light-emitting element 830 in this embodiment is 1.8 micrometers. That is, the area of ​​the light-emitting element 830 in this embodiment can be 1.64 times that of the light-emitting element 830 in the comparative example, enabling lower driving voltage and brighter display.

[0036] "Sub-area boundary" Figure 6 illustrates the configuration of sub-area boundaries, where (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. Figure 7 illustrates the arrangement of sub-area boundaries. Next, the configuration and arrangement of sub-area boundaries SB will be explained with reference to Figures 6 and 7. Note that a sub-area boundary SB is the boundary between one sub-area and its adjacent sub-area.

[0037] Within a single sub-area, the relative positions of the light-emitting element 830 and the color filter 840 are identical for pixels 820 located within the same sub-area. However, as shown in Figure 6, the relative positions of the light-emitting element 830 and the color filter 840 differ between pixels 820 belonging to different sub-areas. In the example in Figure 6, the center of the light-emitting element 830 and the center of the color filter 840 are almost identical for the pixel 820 to the left of the sub-area boundary SB, but the center of the color filter 840 is shifted to the left relative to the center of the light-emitting element 830 for the pixel 820 to the right. Next, the configuration of the sub-area boundary SB will be explained.

[0038] The display device 80 according to this embodiment includes a separation unit 850 that separates the color filters 840. The separation unit 850 is a component that suppresses the mixing of colorants in the color filters 840, a bank when the color filters 840 are formed by a printing method, or a so-called black matrix to avoid color mixing. In the example in Figure 6, the amount of misalignment 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 misalignment, and the amount of misalignment 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 misalignment. As mentioned above, the second misalignment is smaller than the first misalignment, and this difference between the first and second misalignments is brought about by the width of the separation unit 850 positioned between the first color filter 840 and the second color filter 840. The separation unit 850 that separates subpixels located within one sub-area has a standard width W BS It remains constant. In contrast, even if they are adjacent subpixels, if they belong to different sub-areas, the separation unit 850 changes by a width W. BC This is the result. Standard width W BS and change range W BC In this embodiment, the width is different from that of the previous example, and the change width W BC The standard width is W BSIt is made narrower. In this way, the positional relationship between the light-emitting element 830 and the color filter 840 can be easily adjusted simply by changing the width of the separation part 850 of the sub-area boundary SB.

[0039] Furthermore, in order to suppress the possibility that the user will notice the presence of the separation section 850 that is creating the difference, the difference between the first and second shift amounts is brought about by changing the width of the separation section 850, which is positioned between the first color filter 840 and the second color filter 840 and separates the red color filter 840R and the blue color filter 840B. This is because, since human visual sensitivity is higher for green, the difference in shift amounts is created by avoiding the highly sensitive green color filter 840G, and the change width W BC This is because it is difficult to notice the existence of the separation section 850.

[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 (q=20) sub-areas. The 40 rows of pixels 820 located in the central part C of the display area 810 constitute the central sub-area, and the amount of displacement is set to zero. Each of the 40 sub-areas other than the central sub-area consists of 31 rows of pixels 820. The change width W is BC The displacement is stated to be 0.025 micrometers. Therefore, the displacement increases by 0.025 micrometers for each sub-area moved from the central sub-area to the adjacent sub-area, and the displacement in the outermost sub-area is 0.5 micrometers.

[0041] As shown in Figure 7, it is preferable that the row-direction position of the separation portion 850 (sub-area boundary) that creates the difference between the first and second shift amounts differs between the first row and the second row adjacent to the first row. This is because the separation portions 850 (sub-area boundary SB) with different widths do not form a single line, thus reducing the possibility that the user will notice the presence of the separation portion 850 that is creating the difference. In this embodiment, the sub-area boundary SB is shifted by 1 pixel 820 for each row, and three rows constitute one cycle.

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

[0043] The amount of deviation 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 87 is mainly composed of organic substances. Let the refractive index in these three layers be n A Let it be n. A cover glass 880 is disposed on the upper surface of the filling layer 870, and quartz glass is used in this embodiment. Let the refractive index of this cover glass 880 be n B Let it be n. 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 n. 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 θ, 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 θ, 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 θ. At this time, the law of refraction is expressed by Equation 1.

[0044]

Equation

[0045] On the other hand, if the amount of deviation 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, the relationship between L(x), Z0, and θ A is expressed by Equation 2.

[0046]

Equation

[0047] From equation 1 and equation 2, the field of view θ C The relationship between the displacement L(x) and the displacement is given by equation 3.

[0048]

number

[0049] Ideally, each sub-area should generally satisfy the relationship in Equation 3. 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=4.68357mm, outermost sub-area)=0.5 micrometers. As a result, the angle of view from the outermost sub-area nearly coincided with the design optical axis to lens 33.

[0050] (Embodiment 2) "A form with altered sub-area boundaries" Figure 9 illustrates the configuration of the sub-area boundary of the display device according to Embodiment 2, where (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. The display device 80 according to Embodiment 2 will be described below with reference to Figure 9. Note that the same reference numerals are used for components identical to those in Embodiment 1, and redundant explanations are omitted.

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

[0052] In the example in Figure 9, the first shift is the difference 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, and the second shift is the difference 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. As mentioned above, the second shift is smaller than the first shift, but this difference between the first and second shifts is due to the width of another color filter 840 placed between the first and second color filters 840. The color filters 840 of subpixels located within a sub-area are constant, except for the row of subpixels at the very edge of that sub-area (subpixels with another color filter 840). For example, in the right sub-area of ​​Figure 9, the standard width W of the red color filter 840R is... CFRS and standard width W of the green color filter 840G CFGS This is equivalent to the change width W of the blue color filter 840B, which forms the sub-area boundary SB. CFBC and other standard width W of the 840B blue color filter CFBS This is different. The standard width W of the blue color filter 840B. CFBS This is the standard width W of the red color filter 840R. CFRS and standard width W of the green color filter 840G CFGS This is equivalent to the change width W of the row of blue color filters 840B that form the sub-area boundary. CFBC This is the standard width W of the red color filter 840R. CFRS Green color filter 840G standard width W CFGS, standard width W of the blue color filter 840B CFBS It is made narrower. In this way, the positional relationship between the light-emitting element 830 and the color filter 840 can be easily adjusted simply by changing the width of the color filter 840 that forms the sub-area boundary.

[0053] Furthermore, in order to suppress the possibility that the user will notice the presence of the color filter 840 that is creating the difference, it is preferable that the difference between the first and second shift amounts is brought about by a blue color filter 840B placed between the first and second color filters 840. This is because, since human visual sensitivity is low to blue, creating a difference in the shift amount with the blue color filter 840B, which has low visual sensitivity, can suppress the possibility of the user noticing the presence of the color filter 840 that is creating the difference. The same effect as in Embodiment 1 can be obtained with this configuration as well. Furthermore, the present invention is not limited to the embodiments described above, and various modifications and improvements can be made to the embodiments described above. Modifications are described below.

[0054] (Variation 1) "Form 1: Different arrangement of sub-area boundaries" Figure 10 is a diagram illustrating the arrangement of the sub-area boundary SB of the display device according to Modification 1. In Embodiment 1 (Figure 7), the sub-area boundary SB formed one cycle with 3 rows. In contrast, in this Modification, as shown in Figure 10, the period of the sub-area boundary SB is 2 rows. The period of the sub-area boundary SB may also be 4 rows, or any number of rows. Alternatively, the rows may be arranged randomly. In this case, the average value for each row should correspond to the position of the sub-area boundary SB discussed in Embodiment 1.

[0055] (Modification 2) "Form 2: Different arrangement of sub-area boundaries" Figure 11 is a diagram illustrating the arrangement of sub-area boundaries of the display device according to Modification 2. In Embodiment 1 (Figure 7), the sub-area boundary SB formed a cycle with three rows. In contrast, in this Modification, as shown in Figure 11, the sub-area boundary SB is a single straight line. Such a configuration is also acceptable. [Explanation of symbols]

[0056] C...Central part, SB...Sub-area boundary, S11...First surface, S12...Second surface, S13...Third surface, S14...Fourth surface, S15...Fifth surface, 10...Prism, 10e...Top surface, 10s...Main body part, 11...First prism part, 12...Second prism part, 30...Projection lens, 31...Lens, 32...Lens, 33...Lens, 50...Light transmitting member, 61...Frame, 61e...Bottom surface, 62...Microscope tube, 70...Projection fluoroscopy device, 80...Display device, 100...Head-mounted display, 101...Fluorescent part Material, 102...frame, 103a...first optical part, 103b...second optical part, 105a...first internal device part, 105b...second internal device part, 151...first display device, 152...second display device, 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 part, 860...sealing layer, 870...filling layer, 880...cover glass, 890...air.

Claims

1. A first light-emitting element arranged in the display area, In a plan view, a second light-emitting element is positioned toward the center of the display area along the first direction relative to the first light-emitting element, The first light-emitting element and the first color filter that overlap in a plan view, The second light-emitting element and the second color filter that overlap in a plan view, A display device equipped with, A lens that focuses the light emitted from the first light-emitting element and transmitted through the first color filter, and the light emitted from the second light-emitting element and transmitted through the second color filter, Equipped with, The first light-emitting element and the second light-emitting element are one of an organic EL element, an LED element, or a semiconductor laser element. In a plan view, the first displacement, which is the amount of displacement of the center of the first color filter relative to the center of the first light-emitting element, is greater than the second displacement, which is the amount of displacement of the center of the second color filter relative to the center of the second light-emitting element. An electronic device in which, in a plan view, the area where the first light-emitting element and the first color filter overlap is smaller than the area where the second light-emitting element and the second color filter overlap.

2. The electronic device according to claim 1, wherein, in a plan view, the width of the first color filter in the first direction is greater than the width of the first light-emitting element in the first direction, and the width of the second color filter in the first direction is greater than the width of the second light-emitting element in the first direction.

3. The electronic device according to claim 1 or 2, wherein the difference between the first amount of displacement and the second amount of displacement is brought about by the width of the separation portion disposed between the first color filter and the second color filter.

4. The electronic device according to claim 1 or 2, wherein the difference between the first amount of deviation and the second amount of deviation is brought about by the width of another color filter placed between the first color filter and the second color filter.

Images