Display device, photoelectric conversion device, and electronic apparatus

Abstract

To improve the display quality of a display.SOLUTION: A display 100 has a plurality of pixels PX arranged on a principal surface of a substrate 8. A first pixel PX1 of the plurality of pixels PX has a first sub-pixel SP1 that includes a first light emitting element and emits light in a first color, and a second sub-pixel SP2 that includes a second light emitting element and emits light in a second color. The display has a first lens that is arranged on a first light emitting region being a light emitting region ER of the first light emitting element, and a second lens that is arranged on a second light emitting region being the light emitting region ER of the second light emitting element. A vector directed from the center of the first light emitting region to the vertex of the first lens in plan view from a direction perpendicular to the principal surface is different from a vector directed from the center of the second light emitting region to the vertex of the second lens in plan view from the direction perpendicular to the principal surface.SELECTED DRAWING: Figure 7

Description

Technical Field

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

Background Art

[0002] An organic EL element is a light-emitting element having a pair of electrodes and an organic compound layer including a light-emitting layer disposed therebetween. The organic EL element takes advantage of excellent characteristics such as surface light emission characteristics, light weight, and visibility, and is being increasingly put into practical use as a light-emitting device such as a thin display, a lighting fixture, a head-mounted display (HMD), an electronic viewfinder (EVF) of a digital camera, and a light source for a print head of an electrophotographic printer.

[0003] Patent Document 1 discloses an example in which an image is formed on a user's eyeball through an optical system such as a lens in a display device having a relatively small display surface such as an HMD or an EVF. FIG. 1 shows an example in which a display device 2 is used together with a magnifying optical system 6. Here, the broken line shown in FIG. 1 indicates a light ray emitted from the display area of the display device 2 and incident on the eye through the magnifying optical system 6. As shown in FIG. 1, for the central portion of the display area, a light ray emitted in the normal direction of the display area is used, while for the peripheral portion of the display area, a light ray emitted in an oblique direction (a direction inclined with respect to the normal direction) is used.

[0004] The display device described in Patent Document 1 is a so-called "white + CF method" organic EL display in which white light is emitted from an organic compound layer, and any one of red light, green light, and blue light is extracted by the emitted white light passing through a color filter (CF). In a display device having such a configuration, light emitted obliquely from the organic compound layer may enter the user's eyeball through the CF of an adjacent sub-pixel instead of the CF directly above. When passing through the CF of an adjacent sub-pixel, light emission of a color different from the desired color occurs, resulting in color mixing. Therefore, Patent Document 1 describes that color mixing is suppressed by arranging the CF shifted in a plan view with respect to the light emitting surface at the peripheral portion of the display area more than at the central portion.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Even if, as in Patent Document 1, an appropriate CF is passed for each pixel and incident on the user's eyeball, when displaying the same color (for example, white of the same luminance) with the same intensity and chromaticity at the central portion and the peripheral portion of the display area, the color may shift between the central portion and the peripheral portion. When color shift occurs between the central portion and the peripheral portion of the display area, the display quality deteriorates.

[0007] Therefore, in the present invention, in view of the above problems, an object is to improve the display quality of the display device.

Means for Solving the Problems

[0008] A display device as one aspect of the present invention is A display device having a first pixel and a second pixel arranged on a main surface of a substrate, wherein the first pixel includes a first sub-pixel including a first light-emitting element and emitting light of a first color, and a second sub-pixel including a second light-emitting element and emitting light of a second color, the second pixel includes a third sub-pixel including a third light-emitting element and emitting light of the first color, a first lens disposed on a first light-emitting region which is a light-emitting region of the first light-emitting element, a second lens disposed on a second light-emitting region which is a light-emitting region of the second light-emitting element, and a third lens disposed on a third light-emitting region which is a light-emitting region of the third light-emitting element, and a difference between a distance between a center of the first light-emitting region and a vertex of the first lens in a plan view from a direction perpendicular to the main surface and a distance between a center of the light-emitting region of the second light-emitting element and a vertex of the second lens in a plan view from a direction perpendicular to the main surface is larger than a difference between a distance between a center of the first light-emitting region and a vertex of the first lens in a plan view from a direction perpendicular to the main surface and a distance between a center of the light-emitting region of the third light-emitting element and a vertex of the third lens in a plan view from a direction perpendicular to the main surface .

Effects of the Invention

[0009] According to the present invention, the display quality of a display device can be improved.

Brief Description of Drawings

[0010]

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Embodiments for Carrying Out the Invention

[0011] Hereinafter, the details of the display device according to the embodiments of the present invention will be described with reference to the drawings. Note that the following embodiments are all examples of the present invention, and numerical values, shapes, materials, components, the arrangement and connection forms of the components, etc. do not limit the present invention. Although a plurality of features are described in the embodiments, not all of these plurality of features are essential for the invention, and the plurality of features may be arbitrarily combined. Further, in the accompanying drawings, the same or similar configurations are denoted by the same reference numerals, and redundant descriptions are omitted.

[0012] First, the background in which the present inventors arrived at the present invention will be described.

[0013] (Color shift depending on the viewing direction) The relationship between the emission angle and chromaticity of the light emitted from the light-emitting region will be exemplarily described with reference to FIG. 2. FIG. 2(a) schematically shows the light emitted from the light-emitting region ER of a certain light-emitting element, the light emitted from the light-emitting element at an emission angle (θ) = 0° (normal direction), and the light emitted from the light-emitting element at an emission angle (θ) = 40° (oblique direction). In this example, it is assumed that the light-emitting element emits white light. FIG. 2(b) exemplifies the result of normalizing the peak intensity of the red component (580 nm to 780 nm) and the peak intensity of the blue component (400 nm to 490 nm) included in the light emitted from the light-emitting element, with the peak intensity of the green component (490 nm to 580 nm) being 1. As shown in FIG. 2(b), it can be seen that the intensity ratios of the red component, green component, and blue component (hereinafter, color component ratios) are different between the light emitted in the normal direction and the light emitted in the oblique direction.

[0014] This indicates that when the light-emitting element is observed from a direction perpendicular to its surface and when it is observed from an oblique direction with respect to its surface, the colors of the light emitted by the light-emitting element are observed as different from each other, that is, the chromaticities are different from each other. For example, in the case of the example shown in Fig. 2(b), if the light observed from a direction perpendicular to the surface of the light-emitting element is white, the light observed from an oblique direction (θ = 40°) indicates that the blue component is stronger than when observed from the perpendicular direction.

[0015] Consider a display device in which a plurality of pixels are arranged over the entire display area, and each pixel includes the above-described light-emitting element, and the display device is observed through a magnifying optical system. As shown in Fig. 1, for the pixel at the center of the display area, the light emitted in the normal direction of the display surface enters the user's eyeball, but for the pixel at the peripheral portion of the display area, the light emitted in an oblique direction with respect to the normal direction of the display surface enters the user's eyeball. Then, since the color component ratio of the light emitted from the light-emitting element is different between the normal direction and the oblique direction, the light from the pixel at the center of the display area is visually recognized as white, but the light from the pixel at the peripheral portion of the display area is visually recognized as a bluish color.

[0016] (Refraction of light by a microlens) Fig. 3 is a cross-sectional view showing the relationship when the light-emitting region ER and the microlens ML are arranged with the center of the light-emitting region ER shifted with respect to the vertex of the microlens ML. Here, "arranging A by shifting it with respect to B" means arranging A and B so that they do not overlap in a plan view when viewed from a direction perpendicular to the substrate 8 and are separated by a certain distance. In Fig. 3, let the height of the microlens be h, the radius be r, and the refractive index be n, and assume that the light emitted through the microlens is emitted into a medium (typically air) with a refractive index of 1.

[0017] As shown in FIG. 3, light is emitted from the light-emitting region ER at an angle θ1, and is bent at an angle θ2 by point A of the microlens ML. Let the inclination of the normal to the surface of the microlens ML at point A at this time with respect to the tangent be angle α. If (α + θ1) is set as β, then according to Snell's law, the following equation (1) holds. Equation (2) is obtained by solving equation (1) for θ1. 1×sin(θ2 + α) = n×sin(θ1 + α) ··· Equation (1) θ1 = sin -1 {sin(θ2 + α) / n} - α ··· Equation (2)

[0018] As shown in FIG. 3, for light incident in the region where α is positive, that is, the region to the right of the vertex of the microlens ML in FIG. 3, θ2 > θ1, and the light is emitted to a wider angle side. In reality, since there is also a layer such as a protective layer between the microlens ML and the light-emitting region ER, the relationship between the emission angle θ1 from the light-emitting region ER and the emission angle θ2 from the microlens ML is not simply determined by the above equation alone. However, by adopting a configuration in which the microlens ML is provided offset from the light-emitting region ER, it is considered that the emission intensity in a specific direction can be enhanced by the above mechanism.

[0019] FIG. 4 is a cross-sectional view showing the case where the microlens ML is arranged without shifting its vertex with respect to the center of the light-emitting region (FIG. 4(a)) and the case where it is arranged with a shift (FIG. 4(b)). As shown in FIG. 4(a), when the microlens ML is provided without shifting its vertex with respect to the center of the light-emitting region, the intensity of light emitted in the direction perpendicular (normal direction) to the main surface of the substrate 8 can be increased. On the other hand, as shown in FIG. 4(b), when the microlens ML is provided with its vertex shifted with respect to the center of the light-emitting region, the light emitted from the light-emitting element is refracted in an oblique direction, and the intensity of light emitted in the oblique direction can be increased. Thus, the intensity of light emitted in a specific direction can be increased depending on the position where the microlens ML is provided. Here, it is considered that the intensity of light emitted from the microlens ML at an emission angle θ2 is determined by the intensity of light emitted from the light-emitting element at an angle θ1 determined at each point of the lens and the area of the region S that satisfies the relationship of that angle (FIG. 3). When θ2>0, the intensity of light emitted at the emission angle θ2 increases as the shift amount X (lens shift amount) from the center of the light-emitting region at the vertex of the microlens ML is increased from 0, reaches a maximum when the shift amount X is set to a certain value, and turns to decrease when it exceeds that value. That is, it is considered that there is a shift amount for maximizing the emission angle θ2.

[0020] (Adjustment of light quantity by lens shift amount) If the lens shift amount is set for each color, it is possible to adjust the intensity of the light emitted at the emission angle θ2 for each color. By adjusting this for each pixel according to the position of the pixel within the display area, it is also possible to make the color component ratios of the light from each pixel incident on the user's eyeball uniform. For example, in the case of the example in Fig. 2(b), for each pixel where the light emitted at an emission angle of 40° is incident on the user's eyeball, the intensities of the light of the red pixel and the green pixel are increased relative to the blue pixel. More specifically, for each of the above pixels, the lens shift amount is changed between the red pixel and the green pixel and the blue pixel so that the intensities of the light of the red pixel and the green pixel become about 1.46 times (= 2.17 / 1.49) that of the blue pixel. By doing so, it is possible to suppress color shift between the pixel where the light emitted at the emission angle of 40° is used and the pixel at the center.

[0021] The setting of the lens shift amount for each color may be such that the emission intensity of the sub-pixels of a specific color is increased relative to the sub-pixels of other colors, or the emission intensity of the sub-pixels of a specific color is decreased relative to the sub-pixels of other colors, or a combination of both may be used. For example, in the case of the example in Fig. 2(b), in the red pixel and the green pixel, a lens shift amount at which the emission intensity to a certain emission angle θ2 becomes maximum may be set, and in the blue pixel, a smaller lens shift amount may be set. Alternatively, in the red pixel and the green pixel, a lens shift amount at which the emission intensity to a certain emission angle θ2 becomes maximum may be set, and in the blue pixel, a larger lens shift amount may be set. By doing so, the amount of emitted light satisfying the relationship of formula (2) decreases, and the emission intensity of the blue component to the emission angle θ2 can be relatively weakened. As a result, the color component ratio at the emission angle θ2 can be made closer to the color component ratio in the normal direction.

[0022] Note that, as described above, the lens shift amount refers to the relative shift amount between the vertex of the microlens ML and the center of the light-emitting region in a plan view. The lens shift amount may be set by shifting the vertex of the microlens ML with respect to the center of the light region, or by shifting the center of the light-emitting region with respect to the vertex of the microlens ML, or by combining both. Note that the center of the light-emitting region refers to the centroid of the figure defined by the outer edge of the light-emitting region when the light-emitting surface is viewed from a direction perpendicular to the light-emitting surface.

[0023] The inventors of the present invention have arrived at the idea and have reached the solution means of providing the microlens by shifting it in a plan view with respect to the center of the light-emitting region of the light-emitting element and adjusting the lens shift amount for each sub-pixel.

[0024] [Embodiment 1] With reference to FIGS. 5 to 11, the display device according to Embodiment 1 of the present invention will be described.

[0025] (Overall Configuration of Organic Light-Emitting Device) FIG. 5 is a plan view showing the configuration of a display device 100 according to Embodiment 1. The display device 100 has a display region 110 in which a plurality of pixels PX are arranged in a two-dimensional array on a substrate 8 (on the substrate), and a peripheral circuit 120. The peripheral circuit 120 is a circuit for displaying an image in the display region 110 and may include a signal line driving circuit 121 (signal output circuit), which is a driver for image display, and a signal line driving circuit 122 (vertical scanning circuit).

[0026] Each of the plurality of pixels PX has a plurality of sub-pixels SP. In the present embodiment, each of the plurality of pixels PX has three types of sub-pixels SP, namely a sub-pixel SPR that emits light of a first color, a sub-pixel SPB that emits light of a second color, and a sub-pixel SPG that emits light of a third color. Here, the three sub-pixels SP of the first pixel PX1 among the plurality of pixels PX are referred to as a first sub-pixel SP1, a second sub-pixel SP2, and a fifth sub-pixel SP5. Also, the three sub-pixels SP of the second pixel PX2, which is another pixel among the plurality of pixels PX, are referred to as a third sub-pixel SP3, a fourth sub-pixel SP4, and a sixth sub-pixel SP6. In the present embodiment, the first pixel PX1 is disposed outside the display area 110 compared to the second pixel PX2. In other words, the second pixel PX2 is disposed closer to the center of the display area 110 than the first pixel PX1. The center of the display area 110 mentioned here may be the centroid of the outer shape of the display area 110. The first sub-pixel SP1 and the third sub-pixel SP3 are sub-pixels SPR that emit light of the first color, the second sub-pixel SP2 and the fourth sub-pixel SP4 are sub-pixels SPB that emit light of the second color, and the fifth sub-pixel SP5 and the sixth sub-pixel SP6 are sub-pixels SPG that emit light of the third color. Here, the first color, the second color, and the third color are, for example, red, blue, and green, respectively.

[0027] Note that the configuration of the pixel PX shown here is an example and is not limited thereto. For example, each of the plurality of pixels PX may have, in addition to the sub-pixel SPR, the sub-pixel SPB, and the sub-pixel SPG, a sub-pixel SPW that emits a fourth color. The fourth color may be, for example, white or yellow. Also, in the present embodiment, an example in which the arrangement of the sub-pixels SP is a delta arrangement is shown, but it is not limited thereto, and a stripe arrangement, a square arrangement, or a Bayer arrangement may be used. In this specification, when referring to a specific type of sub-pixel or a specific sub-pixel among the plurality of sub-pixels SP, a subscript is attached after the reference numeral as in sub-pixel SP "B" or sub-pixel SP "1". Also, when referring to a sub-pixel without specifying the type of sub-pixel, it is simply shown as sub-pixel "SP". The same applies to other components.

[0028] (Configuration of sub-pixels) FIG. 6(a) is a plan view showing only a part of the plurality of sub-pixels SP arranged in the display area 110 of the display device 100. FIG. 6(b) is a schematic cross-sectional view showing only a part of the cross-section along the line segment E-E' in FIG. 6(a). FIG. 7 is a schematic cross-sectional view showing a part of the cross-section along the line segment E-E' in FIG. 6(a).

[0029] As shown in FIG. 7, each of the plurality of sub-pixels SP included in the display device 100 has a light-emitting element LE. The light-emitting element LE includes a first electrode 11 provided independently for each light-emitting element LE, an insulating layer 16 covering an end portion of the first electrode 11, an organic layer 12 including a light-emitting layer, and a second electrode 13 disposed on the first electrode 11 with the organic layer 12 interposed therebetween. The first electrode 11 is also referred to as a lower electrode, a pixel electrode, an individual electrode, or the like.

[0030] The organic layer 12 is continuously disposed on the first electrode 11 and the insulating layer 16 in common for the plurality of light-emitting elements LE. It can be said that one organic layer 12 is shared by the plurality of light-emitting elements LE. Note that the organic layer 12 may be commonly disposed across the plurality of sub-pixels SP constituting one pixel PX. The organic layer 12 may be separated between adjacent pixels PX, or may be commonly disposed across a plurality of pixels PX. The organic layer 12 may be integrally formed over the entire display area 110. When the organic layer 12 is composed of a plurality of layers, at least a part of those layers may be continuously disposed across the plurality of light-emitting elements LE. In that case, at least the light-emitting layer may be continuously disposed across the plurality of light-emitting elements LE. The light-emitting layer is preferably continuously disposed between above the first lower electrode which is the lower electrode of the first sub-pixel SP1 and above the second lower electrode which is the lower electrode of the second sub-pixel SP2. When the size of the sub-pixel SP is fine, in particular, it is effective to commonly dispose the light-emitting layer across the plurality of sub-pixels SP. Note that "continuously disposed" means disposed without interruption in the middle.

[0031] The insulating layer 16 has an opening on the first electrode 11. At the opening, the first electrode 11 is in contact with the organic layer 12, and a second electrode 13, which is the upper electrode, is disposed thereon. In other words, at the opening of the insulating layer 16, the first electrode 11, the organic layer 12 including the light-emitting layer, and the second electrode 13 are laminated. The light-emitting element LE emits light in a region where the first electrode 11 is in contact with the organic layer 12. Therefore, the region where the first electrode 11 is in contact with the organic layer 12 becomes the light-emitting region ER of the light-emitting element LE. In the case of this embodiment, since the region where the first electrode 11 is in contact with the organic layer 12 is defined by the opening of the insulating layer 16, the light-emitting region ER of the light-emitting element LE is defined by the opening of the insulating layer 16. The insulating layer 16 is also called a pixel isolation film, a partition wall, a bank, or the like.

[0032] The display device 100 further includes a protective layer 14 disposed on the second electrode 13, a color filter layer 18 disposed on the protective layer 14, and a microlens array MLA disposed on the color filter layer 18. The microlens array MLA has a plurality of microlenses ML so as to correspond to the respective light-emitting elements LE. Each of the plurality of microlenses ML is disposed on the light-emitting region ER of the corresponding light-emitting element LE, and is disposed so as to overlap the light-emitting region ER of the corresponding light-emitting element LE in a plan view from a direction perpendicular to the main surface of the substrate 8. Each of the plurality of microlenses ML may be disposed directly above the light-emitting region ER of the corresponding light-emitting element LE. Each of the plurality of microlenses ML is preferably disposed so as to overlap the center of the light-emitting region ER of the corresponding light-emitting element LE in a plan view from a direction perpendicular to the main surface of the substrate 8. Light emitted from the corresponding light-emitting element LE is incident on each microlens ML. In the case of this embodiment, light emitted from the light-emitting element LE and transmitted through the color filter 180 is incident on the microlens ML.

[0033] (Improvement of light emission intensity by misaligned arrangement of microlenses) In this embodiment, in the central portion of the display region 110, the microlens ML is arranged without any deviation with respect to the light-emitting region ER. Here, the deviation between the microlens ML and the light-emitting region ER refers to the deviation between the apex of the microlens ML and the center of the light-emitting region ER. In the following description, the deviation between the apex of the microlens ML and the center of the light-emitting region ER may be simply referred to as the deviation between the microlens ML and the light-emitting region ER. In the central portion of the display region 110, in a plan view with respect to the surface (main surface) on which the light-emitting element LE of the substrate 8 is arranged, the distance between the apex of the microlens ML and the center of the light-emitting region ER is substantially 0 excluding manufacturing errors.

[0034] On the other hand, in the peripheral portion of the display region 110, the microlens ML is arranged so as to deviate outward of the display region 110 with respect to the light-emitting region ER. That is, in the peripheral portion of the display region 110, in a plan view with respect to the surface (main surface) on which the light-emitting element LE of the substrate 8 is arranged, the apex of the microlens ML and the center of the light-emitting region ER are separated by a certain distance (do not coincide). Further, in this embodiment, as shown in FIG. 6(b), the distance between the apex of the microlens ML and the center of the light-emitting region ER becomes larger for the sub-pixels SP located outside the display region 110.

[0035] Four sub-pixels SPa to SPd are shown in FIG. 6(b). The sub-pixel SPa is located at the center of the display region 110, the sub-pixel SPb is located outside the display region 110 compared to the sub-pixel SPa, the sub-pixel SPc is located outside the display region 110 compared to the sub-pixel SPb, and the sub-pixel SPd is located outside the display region 110 compared to the sub-pixel SPc. At this time, if the distances between the apex of the microlens ML of each of the sub-pixels SPb, SPc, SPd and the center of the light-emitting region ER are Db, Dc, Dd, respectively, then Db < Dc < Dd.

[0036] As shown in FIG. 6(b), the direction from the center of the light-emitting region ER to the apex of the microlens ML in a direction parallel to the main surface of the substrate 8 is the direction from the center portion to the peripheral portion of the display region 110. In FIG. 6(b), only a part of the sub-pixels SP arranged along the line segment E-E' is shown, but the same applies to the other sub-pixels SP arranged along other line segments passing through the center of the display region 110. That is, in a direction parallel to the main surface of the substrate 8, the direction from the center of the light-emitting region ER included in each sub-pixel SP to the apex of the microlens ML is the direction from the center portion to the peripheral portion of the display region 110. In other words, the display device of the present embodiment has a plurality of sets of a light-emitting region ER and a microlens ML into which light from the light-emitting region ER is incident. And in the plurality of sets, the direction from the center of the light-emitting region ER to the apex of the microlens ML in a direction parallel to the main surface of the substrate 8 is the direction from the center portion to the peripheral portion of the display region 110 in which the plurality of sets are arranged. In a plan view perpendicular to the main surface of the substrate 8, in each sub-pixel SP, it can also be said that the microlens ML is radially displaced relative to the light-emitting region ER with the center portion of the display region 110 as the center.

[0037] As described above, when the display device 100 is used together with an enlarging optical system, for example, at the center portion of the display region 110 of the display device 100, light emitted in the normal direction (front direction) of the display surface enters the user's eyeball. On the other hand, at the peripheral portion of the display region 110, light emitted in an oblique direction with respect to the display surface enters the user's eyeball. Therefore, by arranging the microlens ML offset from the light-emitting region ER at the peripheral portion of the display region 110 as in the present embodiment, the emission intensity of the light emitted in an oblique direction from the sub-pixels SP at the peripheral portion of the functional region 110 can be increased. Thereby, the light utilization efficiency of the display device 100 can be improved. Here, the light utilization efficiency refers to the ratio of the amount of light that enters the user's eyeball among the light emitted from the display device 100.

[0038] (Color Shift Suppression by Adjusting Microlens Displacement Amount) In this embodiment, furthermore, for each of a plurality of sub-pixels SP that constitute one pixel PX, the deviation direction of the vertex of the microlens ML with respect to the center of the light-emitting region ER is individually set. In this embodiment, for two sub-pixels SP among the plurality of sub-pixels SP that constitute one pixel PX, the distances between the vertex of the microlens ML and the center of the light-emitting region ER are made different from each other. In this embodiment, for two sub-pixels SP, the distances between the vertex of the microlens ML and the center of the light-emitting region ER are made different from each other, but not only the distances (absolute values) but also the directions thereof may be individually set for the deviation directions. That is, for two sub-pixels SP among the plurality of sub-pixels SP that constitute one pixel PX, the displacements from the vertex of the microlens ML to the center of the light-emitting region ER may be made different from each other. In other words, for two sub-pixels SP among the plurality of sub-pixels SP that constitute one pixel PX, the vectors from the vertex of the microlens ML to the center of the light-emitting region ER may be made different from each other.

[0039] The microlenses ML are arranged at a predetermined pitch for each type of sub-pixel SP. For the sub-pixel SPR, the microlenses ML are arranged at a pitch LPr, for the sub-pixel SPG, the microlenses ML are arranged at a pitch LPg, and for the sub-pixel SPB, the microlenses ML are arranged at a pitch LPb. Note that the pitch of the microlenses ML refers to the distance between the vertices of the microlenses ML corresponding to the sub-pixels that are closest to each other among the sub-pixels emitting the same color in a plan view with respect to the surface (main surface) of the substrate 8 on which the light-emitting elements LE are arranged. In this embodiment, the pitch of the microlenses ML is constant regardless of the color (type of sub-pixel) to be emitted, and as shown in FIG. 7, LPr = LPg = LPb. By making the pitch of the microlenses ML constant, the gaps between the microlenses ML can be reduced and filled. Thereby, it is possible to set the radius of each microlens ML to be large, and the light extraction efficiency can be improved.

[0040] Regarding the light-emitting regions ER of the respective sub-pixels SP, they are arranged at a predetermined pitch for each type of sub-pixel SP. The light-emitting regions ER of the sub-pixels SPR are arranged at a pitch Pr, the light-emitting regions ER of the sub-pixels SPG are arranged at a pitch Pg, and the light-emitting regions ER of the sub-pixels SPB are arranged at a pitch Pb. Note that the pitch of the light-emitting region ER refers to the distance between the centers of the light-emitting regions of the sub-pixels that are closest to each other among the sub-pixels emitting the same color in a plan view with respect to the surface (main surface) of the substrate 8 on which the light-emitting elements LE are arranged. In the present embodiment, the pitch of the light-emitting region ER differs depending on the color to be emitted (type of sub-pixel). Specifically, as shown in FIG. 7, Pr = Pg < Pb.

[0041] Furthermore, in the present embodiment, the pitch of the light-emitting region ER and the pitch of the microlens ML are different from each other (Pr < LPr, Pg < LPg, Pb < LPb). More specifically, Pr = Pg < Pb < LPr = LPg = LPb. Since the pitch of the microlens ML and the pitch of the light-emitting region ER are different, even if the microlens ML and the light-emitting element LE are arranged without displacement at the center of the display region 110, at the peripheral portion, the microlens ML and the light-emitting element LE are arranged with an outward displacement. That is, at the peripheral portion on the left side of the display region 110 shown in FIGS. 6 and 7, the microlens ML is arranged with a displacement in the left direction (the direction from E' to E) with respect to the light-emitting region ER. As shown in FIGS. 6 and 7, at the position of the center E' of the display region 110, the vertex of the microlens ML and the center of the light-emitting region ER are not displaced. In this way, by changing the pitch of the light-emitting region ER without changing the pitch of the microlens ML for each type of sub-pixel, for the two sub-pixels SP within one pixel PX, the displacement from the vertex of the microlens ML to the center of the light-emitting region ER can be made different. By adjusting the above-described displacement for each type (color of the emitted light) of the sub-pixel SP, the effect of enhancing the intensity of the light emitted in a specific direction by displacing the microlens ML with respect to the light-emitting region ER can be adjusted for each sub-pixel SP. As a result, depending on the position within the display region 110, that is, depending on the emission angle of the light used, the intensity of the light can be enhanced or weakened for each sub-pixel SP. As a result, color shift between the central portion and the peripheral portion of the display region can be reduced, and the display quality can be improved.

[0042] In this embodiment, the sub-pixel SPR that emits light of the first color and the sub-pixel SPG that emits light of the third color are designed to enhance the intensity of the light emitted in the direction of the user's eyeball over the entire display area 110. That is, for the sub-pixel SPR and the sub-pixel SPG, the pitches of the microlens ML and the light-emitting region ER are set so that the intensity of the light emitted in a specific direction determined by the position of each sub-pixel SP in the display area 110 increases. Typically, the lens shift amount of each sub-pixel is set to be the lens shift amount at which the intensity of the light emitted from each sub-pixel in a specific direction is maximized. The sub-pixel SPB that emits light of the second color is designed to relatively weaken the intensity of the light emitted in the direction of the user's eyeball in the peripheral portion of the display area 110. That is, for the sub-pixel SPB arranged in the peripheral portion of the display area 110, the pitches of the microlens ML and the light-emitting region ER are set so that the intensity of the light emitted in a specific direction determined by the position of each sub-pixel SP in the display area 110 relatively decreases.

[0043] As described above, the sub-pixel SPB that emits light of the second color has a larger ratio of the emission intensity of the light emitted in the diagonal direction to the emission intensity of the light emitted in the front direction compared to other sub-pixels (SPR, SPG). Therefore, if the intensity of the light emitted in the direction of the user's eyeball is enhanced over the entire display area 110 for all sub-pixels SP, the color component ratio will deviate in the peripheral portion, and the intensity of the light of the second color will become stronger than the light emitted in the front direction. Thus, in this embodiment, by adopting the above configuration, for the type of sub-pixel with a large ratio of the emission intensity of the light emitted in the diagonal direction to the emission intensity of the light emitted in the front direction, the emission intensity in the peripheral portion of the display area 110 is made relatively weaker than that of other types of sub-pixels. As a result, the same color component ratio as that of the pixels PX in the central portion of the display area 110 can be obtained for the pixels PX in the peripheral portion of the display area 110, and color deviation in the peripheral portion can be reduced.

[0044] Also, for sub-pixels other than the sub-pixel (here, sub-pixel SPB) for which the emission intensity in the peripheral portion is desired to be relatively weakened (here, sub-pixels SPR and SPG), the intensity of the light emitted from each sub-pixel in a specific direction is maximized. And for the sub-pixel (sub-pixel SPB) for which the emission intensity in the peripheral portion is desired to be weakened, the lens shift amount thereof is made different from that of the other sub-pixels. More specifically, for the sub-pixel (sub-pixel SPB) for which the emission intensity in the peripheral portion is desired to be weakened, the lens shift amount thereof is made smaller than the lens shift amount of the other sub-pixels. Thereby, while increasing the light utilization efficiency of each sub-pixel SP, it is possible to suppress color shift in the peripheral portion of the display area 110.

[0045] The pitch of the microlens ML can be 0.1 times or more and 20 times or less the pitch of the light-emitting region ER. Specifically, the pitch of the light-emitting region ER may be, for example, 0.1 μm or more and 120 μm or less, and the pitch of the microlens ML may be 0.01 μm or more and 2400 μm or less. Also, in the present embodiment, the distance from the second electrode 13 of the light-emitting element LE to the microlens ML may be 0.1 μm or more and 1 mm or less. Also, the distance from the light-emitting region ER of the light-emitting element LE to the microlens ML may be 0.1 μm or more and 1 mm or less.

[0046] Here, the case where the pitch of the light-emitting region ER is changed without changing the pitch of the microlens ML has been described. However, the pitch of the microlens ML may be changed without changing the pitch of the light-emitting region ER. Alternatively, both the pitch of the microlens ML and the pitch of the light-emitting region ER may be changed. In that case, for at least one type of sub-pixel, the pitch of the microlens ML and the pitch of the light-emitting region ER may be made different. Also, here, it has been assumed that the microlens ML and the light-emitting region ER are arranged at a predetermined pitch for each type of sub-pixel SP, but the present invention is not limited to this. At least one of the microlens ML and the light-emitting region ER of a specific type of sub-pixel SP may not be arranged at an equal pitch. In other words, when focusing on a specific type of sub-pixel SP, the distance between two adjacent microlenses ML or the distance between two adjacent light-emitting regions ER may not be constant.

[0047] (Another aspect of this embodiment) Next, another aspect of the present embodiment will be described. In the following description, the microlens ML of the first sub-pixel SP1 is referred to as the first lens ML1, the microlens ML of the second sub-pixel SP2 is referred to as the second lens ML2, and the microlens ML of the third sub-pixel SP3 is referred to as the third lens ML3. The microlens ML of the fourth sub-pixel SP4 is referred to as the fourth lens ML4, the microlens ML of the fifth sub-pixel SP5 is referred to as the fifth lens ML5, and the microlens ML of the sixth sub-pixel SP6 is referred to as the sixth lens ML6. Also, the light-emitting element LE of the first sub-pixel SP1 is referred to as the first light-emitting element LE1, and the light-emitting region ER of the first light-emitting element LE1 is referred to as the first light-emitting region ER1. The light-emitting element LE of the second sub-pixel SP2 is referred to as the second light-emitting element LE2, and the light-emitting region ER of the second light-emitting element LE2 is referred to as the second light-emitting region ER2. The light-emitting element LE of the third sub-pixel SP3 is referred to as the third light-emitting element LE3, and the light-emitting region ER of the third light-emitting element LE3 is referred to as the third light-emitting region ER3. The light-emitting element LE of the fourth sub-pixel SP4 is referred to as the fourth light-emitting element LE4, and the light-emitting region ER of the fourth light-emitting element LE4 is referred to as the fourth light-emitting region ER4. The light-emitting element LE of the fifth sub-pixel SP5 is referred to as the fifth light-emitting element LE5, and the light-emitting region ER of the fifth light-emitting element LE5 is referred to as the fifth light-emitting region ER5. The light-emitting element LE of the sixth sub-pixel SP6 is referred to as the sixth light-emitting element LE6, and the light-emitting region ER of the sixth light-emitting element LE6 is referred to as the sixth light-emitting region ER6.

[0048] As described above, in the present embodiment, for two of the plurality of sub-pixels SP that constitute one pixel PX, the displacements from the apex of the microlens ML to the center of the light-emitting region ER of the light-emitting element LE are made different from each other. Therefore, the displacement from the center of the first light-emitting region ER1 to the apex of the first lens ML1 in plan view is different from the displacement from the center of the second light-emitting region ER2 to the apex of the second lens ML2 in plan view. In other words, the vector from the center of the first light-emitting region ER1 to the apex of the first lens ML1 in plan view is different from the vector from the center of the second light-emitting region ER2 to the apex of the second lens ML2 in plan view.

[0049] (Another aspect 1 of the present embodiment) Focusing on the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3, the present embodiment can also be understood as follows.

[0050] As shown in FIG. 7, the distance between the center of the first light-emitting region ER1 and the vertex of the first lens ML1 in a plan view is defined as the first distance d1, and the distance between the center of the second light-emitting region ER2 and the vertex of the second lens ML2 in a plan view is defined as the second distance d2. Further, the distance between the center of the third light-emitting region ER3 and the vertex of the third lens ML3 in a plan view is defined as the third distance d3. At this time, the first distance d1 and the third distance d3 are different from each other (i.e., d1≠d3). Also, the difference (|d1 - d2|) between the first distance d1 and the second distance d2 is equal to or greater than the difference (|d1 - d3|) between the first distance d1 and the third distance d3. That is, |d1 - d2|≧|d1 - d3| holds. Also, the first distance d1 and the second distance d2 are different from each other (i.e., d1≠d2).

[0051] In the present embodiment, LPr = LPg = LPb and Pr = Pg < Pb, and since the first pixel PX1 is arranged outside the display region 110 compared to the second pixel PX2, d1>d2. However, the present invention is not limited to this. The lens shift amount (d1 in this example) of the color for which the intensity of the light emitted in the diagonal direction is to be relatively increased is set to an amount by which the emission intensity in a desired angle is increased. And then, as long as the lens shift amount (d2 in this example) of the color for which the intensity of the light emitted in the diagonal direction is to be relatively decreased is set to a different amount. For example, d1 < d2 may be the case.

[0052] Regarding the sub-pixels that emit light of a color for which it is desired to relatively enhance the intensity of the light emitted in the diagonal direction, it is preferable that the lens shift amount be such that the emission intensity in the desired angle is maximized according to the position in the display region 110 of each sub-pixel. Thereby, the light utilization efficiency can be enhanced. Further, it is preferable that d1 > d2. Thereby, since d2 can be set small, the design is simplified, which is preferable. Also, d2 may be 0. That is, regarding sub-pixels other than the sub-pixels that emit light of a color for which it is desired to relatively enhance the intensity in the diagonal direction, the vertex of the microlens ML and the center of the light-emitting region ER may be arranged without displacement.

[0053] (Another aspect 2 of the present embodiment) Furthermore, focusing on the first sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3, and the fourth sub-pixel SP4, it can also be grasped as follows.

[0054] In the present embodiment, the pitch of the microlens ML is constant regardless of the type of the sub-pixel SP. Therefore, in a plan view, the distance between the vertex of the first lens ML1 and the vertex of the third lens ML3 is equal to the distance between the vertex of the second lens ML2 and the vertex of the fourth lens ML4. On the other hand, the pitch of the light-emitting region ER varies depending on the type of the sub-pixel SP. Therefore, in a plan view, the distance between the center of the first light-emitting region ER1 and the center of the third light-emitting region ER3 is different from the distance between the center of the second light-emitting region ER2 and the center of the fourth light-emitting region ER4.

[0055] (Others) In the present embodiment, the area of the light-emitting region ER of each sub-pixel SP is constant over the entire display region 110 regardless of the type of the sub-pixel SP, but it is not limited to this. For example, for the purpose of adjusting the current amount necessary for emitting light of a predetermined luminance or the like, the area of the light-emitting region ER may be changed for each sub-pixel SP. Also, the area of the light-emitting region ER may be changed according to the position of the sub-pixel 110 in the display region 110. For example, the area of the light-emitting region ER of the sub-pixel SP arranged in the peripheral portion of the display region 110 may be made smaller than the area of the light-emitting region ER of the sub-pixel SP arranged in the central portion of the display region 110.

[0056] (Detailed description of the components of the sub-pixels) The substrate 8 may be any plate-like member that can support the first electrode 11, the organic layer 12, and the second electrode 13. The substrate 1 may be a semiconductor substrate such as a silicon substrate, a conductor substrate such as a metal, or an insulator substrate such as glass, quartz, or resin. A driving circuit layer (not shown) including transistors electrically connected to the first electrode 11 may be formed on the substrate 8. In this embodiment, the driving circuit formed in the driving circuit layer is an active matrix type pixel driving circuit. Therefore, it can be said that the display device 100 is an active matrix type display device. The driving circuit layer may be formed by being laminated on the substrate 8, or a part of it may be directly formed on the substrate 8 by a semiconductor process. The driving circuit layer may be a multilayer wiring layer including transistors, a plurality of wiring layers, and an interlayer insulating layer disposed between the plurality of wiring layers. When the substrate 8 has a driving circuit layer, the driving circuit layer may also be regarded as part of the "substrate". When the driving circuit layer is also regarded as part of the "substrate", the upper surface of the uppermost interlayer insulating layer of the driving circuit layer can be regarded as the main surface of the substrate 8. In this embodiment, since the first electrode 11 is formed on the main surface, the lower surface of the first electrode 11 coincides with the main surface of the substrate 8. Therefore, the lower surface of the first electrode 11 may be regarded as the main surface of the substrate 8.

[0057] The first electrode 11 is an anode. As described above, it is electrically separated and arranged for each sub-pixel SP by the insulating layer 16. The first electrode 11 may be transparent or opaque. When it is opaque, a metal material with a reflectivity of 70% or more at the emission wavelength is desirable. As the first electrode 11, metals such as Al and Ag, alloys obtained by adding Si, Cu, Ni, Nd, etc. thereto, or transparent conductive oxides such as ITO, IZO, AZO, and IGZO can be used. Here, the emission wavelength refers to the spectral range emitted from the organic layer 12. If the first electrode 11 has a reflectivity higher than the desired value, it may be a laminated electrode with a barrier electrode such as a metal or its alloy of Ti, W, Mo, Au, etc., or a laminated electrode with a transparent oxide film electrode such as ITO and IZO.

[0058] On the other hand, when the first electrode 11 is a transparent electrode, a configuration in which a reflective layer is further provided below the first electrode 11 may be adopted. As the transparent electrode, for example, transparent conductive oxides such as ITO, IZO, AZO, and IGZO can be used. For the purpose of optimizing the optical distance described later, a configuration in which an insulating film is further provided between the reflective layer and the transparent conductive film may be adopted.

[0059] The second electrode 13 is disposed on the organic layer 12 and has light transmissivity. The second electrode 13 may be a semi-transmissive material having the property of transmitting a part of the light reaching its surface and reflecting the other part (i.e., semi-transmissive and reflective).

[0060] As the material of the second electrode 13, for example, a transparent material such as the above-mentioned transparent conductive oxide can be used. In addition, a semi-transmissive material made of a single metal such as aluminum, silver, or gold, an alkali metal such as lithium or cesium, an alkaline earth metal such as magnesium, calcium, or barium, or an alloy material containing these metal materials can be used. As the semi-transmissive material, an alloy mainly composed of magnesium or silver is particularly preferable. Also, if the second electrode 13 has a preferable transmittance, it may be a laminated structure of layers having the above materials. Further, the second electrode 13 may be shared by a plurality of light-emitting elements LE.

[0061] Either the first electrode 11 or the second electrode 13 is an anode, and the other functions as a cathode. That is, the first electrode 11 may be the anode and the second electrode 13 may be the cathode, or vice versa. When an electric field is applied in the direction in which the light-emitting element LE emits light, the electrode with the higher potential is the anode and the other is the cathode. Also, it can be said that the electrode that supplies holes to the light-emitting layer is the anode and the electrode that supplies electrons is the cathode.

[0062] The organic layer 12 is disposed on the first electrode 11 and can be formed by known techniques such as vapor deposition or spin coating. The organic layer 12 may be composed of a plurality of layers. When the organic layer is an organic compound layer, examples of the plurality of layers include any one or a combination of a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

[0063] In the light-emitting layer, holes injected from the anode and electrons injected from the cathode recombine in the organic compound layer to emit light. The structure of the light-emitting layer may be a single layer or a plurality of layers. Any of the light-emitting layers can have a red light-emitting material, a green light-emitting material, or a red light-emitting material, and white light can also be obtained by mixing each emission color. Also, any of the light-emitting layers may have light-emitting materials having a complementary color relationship such as a blue light-emitting material and a yellow light-emitting material.

[0064] Also, different colors may be emitted by changing the materials and structures included in the light-emitting layer for each sub-pixel. Also, a light-emitting layer may be provided for each light-emitting element. In that case, the light-emitting layer may be patterned for each light-emitting element LE.

[0065] The display device according to the present embodiment may have an element having a first reflection surface, a second reflection surface, and a light-emitting layer disposed between the first reflection surface and the second reflection surface. The above-described light-emitting element may have this configuration. The first reflection surface may be the first electrode 11 or a reflection layer disposed between the first electrode 11 and the insulating layer.

[0066] To optimize the optical distance between the first reflecting surface and the light-emitting position of the organic layer 12 including the light-emitting layer, assuming the optical path length Lr from the upper surface of the first reflecting surface to the light-emitting position of the organic layer 12 and the phase shift at the reflecting layer is Φr, Lr = (2m - (Φr / π)) × (λ / 4) ··· Equation (3) m is an integer of 0 or more. The film thicknesses of the first electrode 11 or the first reflecting surface and the organic layer 12 may be optimized so as to approximately satisfy the above Equation (3).

[0067] Also, the optical distance Ls between the light-emitting position and the second reflecting surface approximately satisfies the following Equation (4), assuming the phase shift when the light of wavelength λ is reflected at the reflecting surface is Φs. In this embodiment, m' = 0. Ls = (2m' - (Φs / π)) × (λ / 4) = -(Φs / π) × (λ / 4) ··· Equation (4) Therefore, the total layer interference L approximately satisfies the following condition. L = Lr + L = (2m - Φ / π) × (λ / 4) ··· Equation (5) Here, Φ is the sum Φr + Φs of the phase shifts when the light of wavelength λ is reflected at the first electrode 11 or the reflecting layer and the second electrode 13.

[0068] Here, the so-called approximately satisfy means that in Equations (3) to (5), the allowable range is about λ / 8 or about 20 nm.

[0069] Note that since it may be difficult to specify the light-emitting position of the light-emitting layer, in the above configuration, the light-emitting position is substituted with the interface on the first reflecting surface side or the interface on the second reflecting surface side of the functional layer. Considering the above allowable range, even in such a substitution case, the effect of enhancing light can be achieved.

[0070] The protective layer 14 is an insulating layer, has light-transmitting properties, and preferably contains an inorganic material with low oxygen and moisture permeability from the outside. For example, the protective layer 14 is silicon nitride (SiN), silicon oxynitride (SiON), silicon oxide (SiO x) It can be made using inorganic materials such as aluminum oxide (Al2O3) and titanium oxide (TiO2). Particularly in terms of protection performance, inorganic materials such as SiN, SiON, and Al2O3 are preferred. For the formation of the protective layer 14, it is preferable to use chemical vapor deposition (CVD method), atomic layer deposition (ALD method), or sputtering method.

[0071] If the protective layer 14 has sufficient moisture barrier performance, it may have a single-layer structure or a laminated structure of multiple layers combined with the above materials and formation methods. For example, it may be a laminate of a silicon nitride layer and a layer with a high density formed by atomic deposition method. Furthermore, if the protective layer 14 retains the moisture barrier performance, it may have an organic layer. Examples of the organic layer include polyacrylate, polyimide, polyester, epoxy, etc. Furthermore, the protective layer 14 may be arranged across a plurality of light-emitting elements LE.

[0072] The microlens array MLA can be formed in an exposure and development process. Specifically, a film (photoresist film) made of a material for forming microlenses is formed, and the photoresist film is exposed and developed using a mask having a continuous gradation change. As such a mask, it is possible to use a gray mask or an area gradation mask that enables light irradiation having a continuous gradation on the imaging surface by changing the density distribution of dots composed of a light-shielding film with a resolution lower than that of the exposure apparatus.

[0073] Also, by performing etch-back on the microlenses formed in the exposure and development process, it is possible to adjust the lens shape. The shape of the microlens may be any shape that can refract the emitted light, and it may be spherical or have an asymmetric cross-sectional shape.

[0074] A light-transmitting plate (not shown) may be disposed on the microlens array MLA with a gap therebetween. The gap may be a vacuum space or a space in which a gas exists. The gap is preferably a space filled with air. By providing a gap on the microlens array MLA, the side opposite to the light-emitting element LE of the microlens array MLA, that is, the light-emitting surface side, can be filled with a material having a refractive index lower than that of the microlenses ML constituting the microlens array MLA. Thereby, the light condensing effect of the microlenses ML can be enhanced.

[0075] In this embodiment, a full-color display may be enabled by adopting a configuration in which different colors are injected for each light-emitting element. As a method for realizing a full-color display, a method using a white organic EL element and a color filter as described above may be used, or a configuration in which the light-emitting layer is patterned in each light-emitting element to emit different colors may be adopted.

[0076] Also, a full-color display may be enabled by making the distance between the first reflecting surface and the second reflecting surface different for each light-emitting element. By adopting a configuration in which the distance between the first reflecting surface and the second reflecting surface is made different, light emission of different colors is emitted while sharing the light-emitting layer in each light-emitting element, and the manufacturing process of the light-emitting layer becomes easier than the method of patterning the light-emitting layer.

[0077] When a plurality of light-emitting elements LE are arranged, the planar arrangement may be any of a stripe arrangement, a square arrangement, a delta arrangement, a pentile arrangement, and a Bayer arrangement. FIGS. 5 to 7 show an arrangement example in the case of a delta arrangement. The size and shape of the microlenses ML may be appropriately set according to the arrangement method. For example, in the case of a stripe arrangement, a plurality of long microlenses may be arranged across a plurality of sub-pixels as shown in FIG. 8(a), or a plurality of hemispherical microlenses may be arranged within one sub-pixel as shown in FIG. 8(b). Adopting a delta arrangement is preferable because when the shape of the microlens is a spherical surface, the area where the light-emitting region and the microlens overlap can be set large, and the light extraction efficiency can be enhanced.

[0078] In this embodiment, the color filter layer 18 may be disposed on the protective layer 14. Each of the color filters 180r, 180b, and 180g included in the color filter layer 18 may be a color filter that transmits a different color. Here, the sub-pixel SPR that emits light of the first color has the color filter 180r, the sub-pixel SPB that emits light of the second color has the color filter 180b, and the sub-pixel SPG that emits light of the third color has the color filter 180g. The color filters 180r, 180b, and 180g may be, for example, color filters that transmit red, blue, and green light, respectively. In FIG. 7, the color filter layer 18 is disposed between the protective layer 14 and the microlens array MLA.

[0079] Note that although the microlens ML corresponding to one sub-pixel shows only the sub-pixel that overlaps the center of the light-emitting region ER of the sub-pixel in plan view, the present invention is not limited to this. Over the entire display area 110, only the sub-pixels in which the microlens ML overlaps the center of the light-emitting region ER of the sub-pixel in plan view may be arranged. Also, in the peripheral portion of the display area 110, sub-pixels in which the microlens ML corresponding to one sub-pixel does not overlap the center of the light-emitting region ER of the sub-pixel in plan view may be arranged. By having such a configuration, when it is desired to use the light emitted in a direction with a larger angle with respect to the front direction in the peripheral portion, the light utilization efficiency can be improved.

[0080] In the embodiment, an example of full-color display using a color filter that transmits three colors of light is shown, but the present invention is not limited to this, and the color filter layer 18 may be partially or entirely omitted. In this case, color display may be performed by separately forming the light-emitting layers in the light-emitting element LE and making the color of the light emitted from the light-emitting element different.

[0081] The microlens array MLA may be integrally (continuously) formed directly above the protective layer 14. Further, for the purpose of flattening the unevenness of the protective layer 14, a flattening layer may be formed between the protective layer 14 and the microlens array MLA. The flattening layer may be provided above and below the color filter layer 18, and the constituent materials thereof may be the same or different. Specifically, examples include polyvinylcarbazole resin, polycarbonate resin, polyester resin, ABS resin, acrylic resin, polyimide resin, phenol resin, epoxy resin, silicon resin, urea resin, and the like.

[0082] When the microlens array MLA and the protective layer 14 are integrally formed, the distance between the corresponding microlens ML and the light-emitting element LE can be shortened compared to the case of forming on a separate substrate and bonding them. Therefore, since the solid angle of the light incident from the light-emitting layer to the microlens expands, the light extraction efficiency is improved.

[0083] The stacking order of the color filter layer 18 and the microlens array MLA may be appropriately selected. That is, the color filter layer 18 may be disposed above the microlens array MLA, or may be disposed between the microlens array MLA and the light-emitting element LE. FIG. 7 shows an example in which the microlens array MLA is provided on the light extraction side rather than the color filter layer 18. By stacking in this order, the light incident on the microlens is only the light that has passed through the color filter, so that the emission of the unintended emission color of adjacent sub-pixels outside the element is suppressed, which is preferable because the display quality is improved.

[0084] The distance (color filter shift amount) between the center of the color filter 180 of each sub-pixel in plan view and the center of the light-emitting region ER can be appropriately set. Considering the optical path of the light from the light-emitting region ER passing through the color filter 180 and reaching the microlens ML, as shown in FIG. 7, it is preferable to set the color filter shift amount in the range of 0 or more and the microlens shift amount or less because it is considered that the transmission of light is less likely to be hindered.

[0085] As shown in FIG. 7, the color filter layer 18 may be integrally formed on the protective layer 14, and the microlens array MLA may also be integrally formed. Alternatively, the color filter layer 18 may be formed on a separate substrate and bonded so that the substrate on which the color filter layer 18 is formed faces the substrate 8. By forming the color filter layer 18 and the protective layer 14 integrally, each color filter 180 can be formed with high positional accuracy with respect to the light emitting region ER using a photolithography process. Further, by integrally forming the color filter layer 18, the microlens array MLA, and the protective layer 14, the positional relationship among the light emitting region ER, the color filter 180, and the microlens ML can be accurately formed.

[0086] Also, as shown in FIG. 9(a), the microlens array MLA and the color filter layer 18 may be formed on separate substrates and bonded to face the substrate 8 having the light emitting element LE to manufacture a display device. By configuring in this way, the degree of freedom in the processing method (such as temperature) during the production of the color filter layer 18 and the microlens array MLA increases, and the degree of freedom in the design and manufacturing process of the color filter layer 18 and the microlens array MLA can be raised.

[0087] In this case, for example, the microlens array MLA and the color filter layer 18 are fixed to the substrate 8 with an adhesive. At this time, the adhesive may be disposed either between the protective layer 14 and the microlens array MLA or between the planarization layer and the microlens array MLA. Also, a space may be provided between the microlens array MLA and the protective layer 14 (or the planarization layer, the color filter), and the microlens array MLA may be fixed to the substrate 8 with an adhesive at the end of the display device, or the space may be filled with a filling resin. It is preferable that the refractive index of the filling resin is smaller than the refractive index of the microlens ML.

[0088] Also, as shown in FIG. 9(b), the color filter layer 18 may be integrally formed on the protective layer 14, and the microlens array MLA may be formed on a separate substrate and bonded to face each other.

[0089] Even when the microlens array MLA is formed on a separate substrate and then bonded to face the substrate 8, the effects of the present invention can be obtained. As shown in FIG. 10, by displacing the apex of the microlens ML from the center of the light-emitting region ER, light can be refracted when passing through the microlens ML.

[0090] In the present embodiment, an example in which the microlens ML is a spherical microlens has been described, but the display device of the present embodiment is not limited to this. For example, as shown in FIG. 11, an aspherical lens in which the center of the lens (the centroid of the shape formed by the line connecting the ends of the lens in plan view) and the apex are displaced may be used. Also in this case, it is sufficient that the apex of the microlens ML, which is an aspherical lens, is displaced from the center of the light-emitting region ER. Note that the center of the microlens ML, which is an aspherical lens, and the center of the light-emitting region ER may or may not be displaced.

[0091] In FIG. 11, an example is shown in which the microlens ML of the sub-pixel SP arranged at the center of the display region 110 of the display device is a spherical lens, and the microlens ML of the sub-pixel SP arranged at the peripheral portion of the display region 110 is an aspherical lens. Also in this case, by adjusting the lens displacement amount for each sub-pixel as described above, the emission intensity at a specific angle can be adjusted for each sub-pixel. Thereby, color shift between the central portion and the peripheral portion of the display region can be reduced, and the display quality can be improved.

[0092] [Embodiment 2] With reference to FIG. 12, a display device according to Embodiment 2 of the present invention will be described. In the following description, mainly the parts different from Embodiment 1 will be described.

[0093] FIG. 12 is a cross-sectional view showing the configuration of the display device 200 according to Embodiment 2. The difference between the display device 200 and the display device 100 is that the pitch of the light-emitting region ER is constant regardless of the color to be emitted (type of sub-pixel), and the pitch of the microlens ML varies depending on the color to be emitted (type of sub-pixel). Since other points have the same configuration as the display device 100, the description thereof is omitted. As in the present embodiment, it is preferable to make the pitch of the light-emitting region ER constant regardless of the type of sub-pixel because the design of the light-emitting region ER is simplified.

[0094] As shown in FIG. 12, for the sub-pixel SPR, the microlenses ML are arranged at a pitch LPr, for the sub-pixel SPG, the microlenses ML are arranged at a pitch LPg, and for the sub-pixel SPB, the microlenses ML are arranged at a pitch LPb. FIG. 12 shows an example where LPb < LPr = LPg. On the other hand, the light-emitting regions ER of the sub-pixel SPR are arranged at a pitch Pr, the light-emitting regions ER of the sub-pixel SPG are arranged at a pitch Pg, and the light-emitting regions ER of the sub-pixel SPB are arranged at a pitch Pb. FIG. 12 shows an example where Pr = Pg = Pb. Further, FIG. 12 shows an example where Pr = Pg = Pb < LPb < LPg = LPr.

[0095] Also according to the present embodiment, as in Embodiment 1, the amount of lens shift can be adjusted for each sub-pixel, and the effect of enhancing the intensity of the light emitted in a specific direction by shifting the microlens ML with respect to the light-emitting region ER can be adjusted for each sub-pixel SP. Thereby, the intensity of the light can be increased or decreased for each sub-pixel SP according to the position in the display region 110, that is, according to the emission angle of the light used. As a result, color shift between the central portion and the peripheral portion of the display region can be reduced, and the display quality can be improved.

[0096] [Other Embodiments] FIG. 13 is a schematic diagram showing an example of a display device according to the present embodiment. The display device 1000 may include a touch panel 1003, a display panel 1005, a frame 1006, a circuit board 1007, and a battery 1008 between an upper cover 1001 and a lower cover 1009. The touch panel 1003 and the display panel 1005 are connected to flexible printed circuits FPC 1002 and 1004. A transistor is printed on the circuit board 1007. The battery 1008 may not be provided if the display device is not a portable device, or may be provided at another position even if the display device is a portable device.

[0097] The display device according to the present embodiment may include a color filter having red, green, and blue. The red, green, and blue may be arranged in a delta array in the color filter.

[0098] The display device according to the present embodiment may be used for a display unit of a portable terminal. In that case, it may have both a display function and an operation function. Examples of the portable terminal include a mobile phone such as a smartphone, a tablet, and a head-mounted display.

[0099] The display device according to the present embodiment may be used for a display unit of an imaging device including an optical unit having a plurality of lenses and an imaging element that receives light that has passed through the optical unit. The imaging device may include a display unit that displays information acquired by the imaging element. Further, the display unit may be a display unit exposed to the outside of the imaging device or a display unit disposed in a viewfinder. The imaging device may be a digital camera or a digital video camera.

[0100] FIG. 14(a) is a schematic diagram showing an example of an imaging device according to the present embodiment. The imaging device 1100 may include a viewfinder 1101, a rear display 1102, an operation unit 1103, and a housing 1104. The viewfinder 1101 may include a display device according to the present embodiment. In that case, the display device may display not only the image to be captured but also environmental information, imaging instructions, and the like. The environmental information may include the intensity of external light, the direction of external light, the speed at which the subject moves, the possibility that the subject is blocked by an obstacle, and the like.

[0101] Since the timing suitable for imaging is a very short time, it is better to display information as soon as possible. Therefore, it is preferable to use the display device using the organic light-emitting element of the present invention. This is because the organic light-emitting element has a high response speed. The display device using the organic light-emitting element can be more preferably used than these devices, such as a liquid crystal display device, for which a display speed is required.

[0102] The imaging device 1100 has an optical unit (not shown). The optical unit has a plurality of lenses and forms an image on an image sensor housed in the housing 1104. The plurality of lenses can adjust the focus by adjusting their relative positions. This operation can also be performed automatically. The imaging device may be called a photoelectric conversion device. The photoelectric conversion device may include, as an imaging method, a method of detecting the difference from a previous image instead of sequentially imaging, a method of cutting out from an image that is always recorded, and the like.

[0103] FIG. 14(b) is a schematic diagram showing an example of an electronic device according to the present embodiment. The electronic device 1200 includes a display unit 1201, an operation unit 1202, and a housing 1203. The housing 1203 may include a circuit, a printed circuit board having the circuit, a battery, and a communication unit. The operation unit 1202 may be a button or a reaction unit of a touch panel system. The operation unit may be a biometric recognition unit that recognizes a fingerprint to unlock etc. An electronic device having a communication unit can also be called a communication device. The electronic device may further have a camera function by including a lens and an imaging device. An image captured by the camera function is displayed on the display unit. Examples of the electronic device include a smartphone and a notebook personal computer.

[0104] FIG. 15 is a schematic diagram showing an example of a display device according to the present embodiment. FIG. 15(a) shows a display device such as a TV monitor or a PC monitor. The display device 1300 has a frame 1301 and a display unit 1302. The light-emitting device according to the present embodiment may be used for the display unit 1302.

[0105] It has a frame 1301 and a base 1303 that supports the display unit 1302. The base 1303 is not limited to the form of FIG. 15(a). The lower side of the frame 1301 may also serve as the base.

[0106] Also, the frame 1301 and the display unit 1302 may be bent. The radius of curvature may be 5000 mm or more and 6000 mm or less.

[0107] FIG. 15(b) is a schematic diagram showing another example of the display device according to the present embodiment. The display device 1310 in FIG. 15(b) is configured to be foldable and is a so-called foldable display device. The display device 1310 includes a first display unit 1311, a second display unit 1312, a housing 1313, and a bending point 1314. The first display unit 1311 and the second display unit 1312 may include the light-emitting device according to the present embodiment. The first display unit 1311 and the second display unit 1312 may be a single seamless display device. The first display unit 1311 and the second display unit 1312 can be separated at the bending point. The first display unit 1311 and the second display unit 1312 may display different images, or may display one image together with the first and second display units.

[0108] FIG. 16(a) is a schematic diagram showing an example of the lighting device according to the present embodiment. The lighting device 1400 may include a housing 1401, a light source 1402, a circuit board 1403, an optical film 1404, and a light diffusing portion 1405. The light source may include the organic light-emitting element according to the present embodiment. The optical filter may be a filter that improves the color rendering property of the light source. The light diffusing portion can effectively diffuse the light of the light source, such as lighting up, and deliver the light to a wide range. The optical filter and the light diffusing portion may be provided on the light-emitting side of the lighting. If necessary, a cover may be provided on the outermost side.

[0109] The lighting device is, for example, a device for lighting a room. The lighting device may emit any color from white, day white, or other colors from blue to red. It may have a dimming circuit for dimming them. The lighting device may include the organic light-emitting element of the present invention and a power supply circuit connected thereto. The power supply circuit is a circuit that converts an AC voltage into a DC voltage. Also, white has a color temperature of 4200K and day white has a color temperature of 5000K. The lighting device may have a color filter.

[0110] In addition, the lighting device according to the present embodiment may have a heat radiating portion. The heat radiating portion releases the heat inside the device to the outside of the device, and examples thereof include a metal having a high specific heat and liquid silicon.

[0111] FIG. 16(b) is a schematic diagram of an automobile which is an example of a moving body according to the present embodiment. The automobile has a tail lamp which is an example of a lighting device. The automobile 1500 may have a tail lamp 1501 and may be configured to turn on the tail lamp when a braking operation or the like is performed.

[0112] The tail lamp 1501 may have an organic light-emitting element according to the present embodiment. The tail lamp may have a protective member for protecting the organic EL element. The protective member has a certain degree of strength and may be made of any material as long as it is transparent, but is preferably made of polycarbonate or the like. A phthalic acid derivative, an acrylonitrile derivative or the like may be mixed into the polycarbonate.

[0113] The automobile 1500 may have a vehicle body 1503 and a window 1502 attached thereto. The window may be a transparent display as long as it is not a window for checking the front and rear of the automobile. The transparent display may have an organic light-emitting element according to the present embodiment. In this case, constituent materials such as electrodes of the organic light-emitting element are made of transparent members.

[0114] The moving body according to the present embodiment may be a ship, an aircraft, a drone or the like. The moving body may have a fuselage and a lighting device provided on the fuselage. The lighting device may emit light for indicating the position of the fuselage. The lighting device has an organic light-emitting element according to the present embodiment.

[0115] With reference to FIG. 17, application examples of the display device of each of the above-described embodiments will be described. The display device can be applied to a system that can be worn as a wearable device such as smart glasses, an HMD, or smart contacts. The imaging display device used in such an application example has an imaging device capable of photoelectrically converting visible light and a display device capable of emitting visible light.

[0116] FIG. 17(a) illustrates glasses 1600 (smart glasses) according to one application example. An imaging device 1602 such as a CMOS sensor or a SPAD is provided on the front surface side of the lens 1601 of the glasses 1600. Also, a display device of each of the above-described embodiments is provided on the back surface side of the lens 1601.

[0117] The glasses 1600 further include a control device 1603. The control device 1603 functions as a power supply that supplies power to the imaging device 1602 and the display device according to each embodiment. Also, the control device 1603 controls the operations of the imaging device 1602 and the display device. An optical system for condensing light onto the imaging device 1602 is formed in the lens 1601.

[0118] FIG. 17(b) illustrates glasses 1610 (smart glasses) according to one application example. The glasses 1610 have a control device 1612, and an imaging device corresponding to the imaging device 1602 and a display device are mounted on the control device 1612. An optical system for the imaging device within the control device 1612 and for projecting light emitted from the display device is formed in the lens 1611, and an image is projected onto the lens 1611. The control device 1612 functions as a power supply that supplies power to the imaging device and the display device, and controls the operations of the imaging device and the display device. The control device may have a gaze detection unit that detects the wearer's gaze. Infrared rays may be used for gaze detection. The infrared light emitting unit emits infrared light toward the eyeball of the user who is gazing at the display image. The imaging unit having a light receiving element detects the reflected light of the emitted infrared light from the eyeball, thereby obtaining an imaging image of the eyeball. By having a reduction means for reducing the light from the infrared light emitting unit to the display unit in a plan view, a reduction in image quality is reduced.

[0119] The user's gaze with respect to the display image is detected from the imaging image of the eyeball obtained by imaging infrared light. Any known method can be applied to gaze detection using the imaging image of the eyeball. As an example, a gaze detection method based on a Purkinje image by reflection of irradiation light on the cornea can be used.

[0120] More specifically, a gaze detection process based on the pupil corneal reflex method is performed. Using the pupil corneal reflex method, a gaze vector representing the orientation (rotation angle) of the eyeball is calculated based on the image of the pupil and the Purkinje image included in the captured image of the eyeball, thereby detecting the user's gaze.

[0121] The display device according to an embodiment of the present invention may include an imaging device having a light receiving element, and control the display image of the display device based on the user's gaze information provided from the imaging device.

[0122] Specifically, the display device determines a first visual field region that the user is gazing at and a second visual field region other than the first visual field region based on the gaze information. The first visual field region and the second visual field region may be determined by the control device of the display device, or the display device may receive those determined by an external control device. In the display area of the display device, the display resolution of the first visual field region may be controlled to be higher than that of the second visual field region. That is, the resolution of the second visual field region may be made lower than that of the first visual field region.

[0123] Also, the display area has a first display area and a second display area different from the first display area, and based on the gaze information, a region with a higher priority is determined from the first display area and the second display area. The first visual field region and the second visual field region may be determined by the control device of the display device, or the display device may receive those determined by an external control device. The resolution of the region with a higher priority may be controlled to be higher than that of the regions other than the region with a higher priority. That is, the resolution of the region with a relatively lower priority may be made lower.

[0124] Note that AI may be used to determine the first visual field region and the region with a higher priority. AI may be a model configured to estimate the angle of the gaze and the distance to the target at the tip of the gaze from the image of the eyeball using the image of the eyeball and the direction in which the eyeball in the image is actually looking as teacher data. The AI program may be possessed by the display device, the imaging device, or an external device. When an external device has it, it is transmitted to the display device via communication.

[0125] When performing display control based on visual recognition, it can be preferably applied to smart glasses further having an imaging device for imaging the outside. The smart glasses can display the imaged external information in real time.

[0126] As described above, by using the device using the organic light-emitting element according to the present embodiment, it is possible to achieve a good image quality and a stable display even for long-time display.

Explanation of Reference Numerals

[0127] 100 Display device 8 Substrate PX Pixel SP Sub-pixel LE Light-emitting element ML Lens ER Light-emitting region

Claims

1. It has a first pixel and a second pixel arranged on the main surface of the substrate, The first pixel has a first sub-pixel including a first light-emitting element and emitting light of a first color, and a second sub-pixel including a second light-emitting element and emitting light of a second color, The second pixel has a third sub-pixel including a third light-emitting element and emitting light of the first color, A display device having a first lens arranged on a first light-emitting region which is a light-emitting region of the first light-emitting element, a second lens arranged on a second light-emitting region which is a light-emitting region of the second light-emitting element, and a third lens arranged on a third light-emitting region which is a light-emitting region of the third light-emitting element, The difference between the distance between the center of the first light-emitting region and the vertex of the first lens in a plan view from a direction perpendicular to the main surface and the distance between the center of the light-emitting region of the second light-emitting element and the vertex of the second lens in a plan view from a direction perpendicular to the main surface is Larger than the difference between the distance between the center of the first light-emitting region and the vertex of the first lens in a plan view from a direction perpendicular to the main surface and the distance between the center of the light-emitting region of the third light-emitting element and the vertex of the third lens in a plan view from a direction perpendicular to the main surface A display device characterized by this.

2. The distance between the end of the display area where the first pixel and the second pixel are arranged and the first pixel is smaller than the distance between the end of the display area and the second pixel The display device according to claim 1, characterized by this.

3. The second pixel has a fourth sub-pixel including a fourth light-emitting element and emitting light of the second color, It has a fourth lens arranged on a fourth light-emitting region which is a light-emitting region of the fourth light-emitting element, The distance between the vertex of the first lens and the vertex of the third lens in a plan view from a direction perpendicular to the main surface is equal to the distance between the vertex of the second lens and the vertex of the fourth lens in a plan view from a direction perpendicular to the main surface, The distance between the center of the first light-emitting region and the center of the third light-emitting region in a plan view from a direction perpendicular to the main surface is different from the distance between the center of the second light-emitting region and the center of the fourth light-emitting region in a plan view from a direction perpendicular to the main surface. The display device according to claim 1 or 2, characterized in that.

4. It has a first pixel and a second pixel arranged on the main surface of the substrate. The first pixel includes a first sub-pixel that includes a first light-emitting element and emits light of a first color, and a second sub-pixel that includes a second light-emitting element and emits light of a second color different from the first color. The second pixel includes a third sub-pixel that includes a third light-emitting element and emits light of the first color, and a fourth sub-pixel that includes a fourth light-emitting element and emits light of the second color. A display device having a first lens disposed on a first light-emitting region that is a light-emitting region of the first light-emitting element, a second lens disposed on a second light-emitting region that is a light-emitting region of the second light-emitting element, a third lens disposed on a third light-emitting region that is a light-emitting region of the third light-emitting element, and a fourth lens disposed on a fourth light-emitting region that is a light-emitting region of the fourth light-emitting element, The difference between the distance between the apex of the first lens and the apex of the third lens in a plan view from a direction perpendicular to the main surface and the distance between the apex of the second lens and the apex of the fourth lens in a plan view from a direction perpendicular to the main surface is smaller than the distance between the apex of the first lens and the apex of the second lens in a plan view from a direction perpendicular to the main surface. The distance between the center of the first light-emitting region and the center of the third light-emitting region in a plan view from a direction perpendicular to the main surface is different from the distance between the center of the second light-emitting region and the center of the fourth light-emitting region in a plan view from a direction perpendicular to the main surface. The display device, characterized in that.

5. The distance between the center of the first light-emitting region and the center of the third light-emitting region in a plan view from a direction perpendicular to the main surface is smaller than the distance between the center of the second light-emitting region and the center of the fourth light-emitting region in a plan view from a direction perpendicular to the main surface. The display device according to claim 3 or 4, characterized by the above.

6. The second pixel includes a fourth light-emitting element and has a fourth sub-pixel that emits light of the second color. It has a fourth lens disposed on the fourth light-emitting region that is the light-emitting region of the fourth light-emitting element. The distance between the apex of the first lens and the apex of the third lens in a plan view from a direction perpendicular to the main surface is different from the distance between the apex of the second lens and the apex of the fourth lens in a plan view from a direction perpendicular to the main surface. The difference between the distance between the center of the first light-emitting region and the center of the third light-emitting region in a plan view from a direction perpendicular to the main surface and the distance between the center of the second light-emitting region and the center of the fourth light-emitting region in a plan view from a direction perpendicular to the main surface is smaller than the distance between the apex of the first lens and the apex of the second lens in a plan view from a direction perpendicular to the main surface. The display device according to claim 1 or 2, characterized by the above.

7. It has a first pixel and a second pixel disposed on the main surface of the substrate. The first pixel includes a first sub-pixel that includes a first light-emitting element and emits light of a first color, and a second sub-pixel that includes a second light-emitting element and emits light of a second color different from the first color. The second pixel includes a third sub-pixel that includes a third light-emitting element and emits light of the first color, and a fourth sub-pixel that includes a fourth light-emitting element and emits light of the second color. A display device having a first lens disposed over a first light-emitting region which is a light-emitting region of the first light-emitting element, a second lens disposed over a second light-emitting region which is a light-emitting region of the second light-emitting element, a third lens disposed over a third light-emitting region which is a light-emitting region of the third light-emitting element, and a fourth lens disposed over a fourth light-emitting region which is a light-emitting region of the fourth light-emitting element, The difference between the distance between the center of the first light-emitting region and the center of the third light-emitting region in a plan view from a direction perpendicular to the main surface and the distance between the center of the second light-emitting region and the center of the fourth light-emitting region in a plan view from a direction perpendicular to the main surface is smaller than the distance between the center of the first light-emitting region and the center of the second light-emitting region in a plan view from a direction perpendicular to the main surface, The distance between the apex of the first lens and the apex of the third lens in a plan view from a direction perpendicular to the main surface is different from the distance between the apex of the second lens and the apex of the fourth lens in a plan view from a direction perpendicular to the main surface A display device characterized by the above.

8. The distance between the apex of the first lens and the apex of the third lens in a plan view from a direction perpendicular to the main surface is larger than the distance between the apex of the second lens and the apex of the fourth lens in a plan view from a direction perpendicular to the main surface The display device according to claim 6 or 7, characterized by the above.

9. The distance between the end of the display region where the first pixel and the second pixel are disposed and the first pixel is smaller than the distance between the end of the display region and the second pixel, The distance between the center of the first light-emitting region of the first light-emitting element and the apex of the first lens in a plan view from a direction perpendicular to the main surface is larger than the distance between the center of the third light-emitting region of the third light-emitting element and the apex of the third lens in a plan view from a direction perpendicular to the main surface The display device according to any one of claims 1 to 8, characterized by the above.

10. A set including the set of the first light-emitting region and the first lens, and the set of the second light-emitting region and the second lens, and having a plurality of sets of a light-emitting region and a lens disposed on the light-emitting region, In each of the plurality of sets, the direction from the center of the light-emitting region in a direction parallel to the main surface toward the apex of the lens is a direction from the center portion to the peripheral portion of the region where the plurality of sets are arranged. The display device according to any one of claims 1 to 9, characterized in that.

11. The first sub-pixel and the second sub-pixel are arranged adjacent to each other. The display device according to any one of claims 1 to 10, characterized in that.

12. The plurality of light-emitting elements including the first light-emitting element and the second light-emitting element each have, A lower electrode, An organic layer including a light-emitting layer disposed on the lower electrode, An upper electrode disposed on the lower electrode with the organic layer interposed therebetween, And have, An insulating layer that covers an end portion of the lower electrode and has an opening on the lower electrode is disposed, The light-emitting region of each of the plurality of light-emitting elements is a portion defined by the opening of the insulating layer in a plan view from a direction perpendicular to the main surface. The display device according to any one of claims 1 to 11, characterized in that.

13. The light-emitting layer is continuously disposed between the first lower electrode, which is the lower electrode of the first sub-pixel, and the second lower electrode, which is the lower electrode of the second sub-pixel. The display device according to claim 12, characterized in that.

14. The light-emitting layer emits white light. The display device according to claim 12 or 13, characterized in that.

15. The distance between the upper electrode of the first light-emitting element and the first lens in the direction perpendicular to the main surface is 0.1 μm or more and 1 mm or less. The display device according to any one of claims 12 to 14, characterized in that.

16. Further comprising a color filter, The color filter is disposed between the first light-emitting element and the first lens or on the first lens. The display device according to any one of claims 1 to 15, characterized in that.

17. Having a first pixel and a second pixel disposed on the main surface of a substrate, The first pixel includes a first sub-pixel that includes a first light-emitting element and emits light of a first color, and a second sub-pixel that includes a second light-emitting element and emits light of a second color. The second pixel has a third sub-pixel that includes a third light-emitting element and emits light of the first color. A display device having a first lens disposed on a first light-emitting region that is a light-emitting region of the first light-emitting element, a second lens disposed on a second light-emitting region that is a light-emitting region of the second light-emitting element, and a third lens disposed on a third light-emitting region that is a light-emitting region of the third light-emitting element, The difference between the distance between the center of the first light-emitting region and the vertex of the first lens in a plan view from a direction perpendicular to the main surface and the distance between the center of the light-emitting region of the second light-emitting element and the vertex of the second lens in a plan view from a direction perpendicular to the main surface, Is greater than the difference between the distance between the center of the first light-emitting region and the vertex of the first lens in a plan view from a direction perpendicular to the main surface and the distance between the center of the light-emitting region of the third light-emitting element and the vertex of the third lens in a plan view from a direction perpendicular to the main surface, The second pixel has a fourth sub-pixel that includes a fourth light-emitting element and emits light of the second color. Having a fourth lens disposed on a fourth light-emitting region that is a light-emitting region of the fourth light-emitting element, The distance between the vertex of the first lens and the vertex of the third lens in a plan view from a direction perpendicular to the main surface is equal to the distance between the vertex of the second lens and the vertex of the fourth lens in a plan view from a direction perpendicular to the main surface. The distance between the center of the first light-emitting region and the center of the third light-emitting region in a plan view from a direction perpendicular to the main surface is different from the distance between the center of the second light-emitting region and the center of the fourth light-emitting region in a plan view from a direction perpendicular to the main surface. A display device characterized by the above.

18. Having a transistor connected to the electrode of the first light-emitting element The display device according to any one of claims 1 to 17, characterized by the above.

19. An imaging device, A display device according to any one of claims 1 to 17 as a display unit, and comprising: A display device in which the display image of the display unit is controlled based on the user's line-of-sight information provided from the imaging device.

20. Having an optical unit having a plurality of lenses, an imaging element that receives light that has passed through the optical unit, and a display unit that displays an image captured by the imaging element. The display unit is a photoelectric conversion device having a display device according to any one of claims 1 to 17.

21. An electronic device having a display unit having a display device according to any one of claims 1 to 17, a housing in which the display unit is provided, and a communication unit provided in the housing for communicating with the outside.

Images