Display devices and electronic devices

Abstract

Provided are a display device and electronic apparatus which are capable of suppressing color mixing while also suppressing a decrease in luminance and a decrease in the protection function of light emitting elements.　The display device comprises: a substrate; a plurality of light emitting elements which are disposed two-dimensionally on the substrate and which have a plurality of first electrodes, an organic layer disposed on the first electrodes, and a second electrode covering the organic layer; a protective layer which covers the plurality of light emitting elements; and a plurality of color filters which are provided above the protective layer. A plurality of subpixels respectively corresponding to the plurality of light emitting elements are formed. A ring-shaped lens having a protruding surface part that protrudes in the direction away from the substrate is provided to the peripheral edge part of each subpixel, at a position so as to avoid a position straddling the color filter of a subpixel adjacent to that subpixel, in a planar view of the subpixels. The refractive index of the lens is higher than the refractive index of the outer part of the lens contacting the protruding surface part.

Description

[Technical Field]

[0001] The present disclosure relates to a display device and an electronic device using the same. [Background technology]

[0002] In a display device (hereinafter simply referred to as a display device) equipped with a light-emitting element having an organic layer, light generated by the light-emitting element may penetrate not only the color filter provided in the subpixel corresponding to the light-emitting element but also the color filter of the adjacent subpixel adjacent to the subpixel. In this case, light may leak not only into the subpixel intended to emit light but also into the adjacent subpixel (hereinafter sometimes referred to as light leakage), causing color mixing on the display screen. To suppress such light leakage and color mixing, it is known to form a light-shielding layer between adjacent color filters, as shown in Patent Document 1, for example. Another known method is to shorten the distance between the light-emitting element and the color filter by thinning a protective layer formed between the light-emitting element and the color filter using atomic layer deposition (ALD) technology. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-162588 Summary of the Invention [Problem to be solved by the invention]

[0004] When a light-shielding layer is formed in a display device, there is room for improvement in terms of suppressing a decrease in the brightness of the display device. Also, when a protective film in a display device is made thinner, there is room for improvement in terms of suppressing a decrease in the protective function of the light-emitting element.

[0005] The present disclosure has been made in view of the above-mentioned points, and one of its objects is to provide a display device and an electronic device that can suppress color mixing while suppressing a decrease in brightness and a decrease in the protection function of light-emitting elements. [Means for solving the problem]

[0006] The present disclosure provides a method for manufacturing a semiconductor device, comprising, for example, (1) a substrate; a plurality of light-emitting elements arranged two-dimensionally on the substrate, each of which has a plurality of first electrodes, an organic layer arranged on the plurality of first electrodes, and a second electrode covering the organic layer; a protective layer covering the plurality of light-emitting elements; a plurality of color filters provided on the protective layer; a plurality of lenses disposed in the color filter; Equipped with a plurality of sub-pixels are formed corresponding to the plurality of light-emitting elements, The lens a ring-shaped projection having a convex surface that is convex in a direction away from the substrate; and The lens, in a plan view of the sub-pixel, At the periphery of the sub-pixel It is provided, The refractive index of the lens is the color filter higher than the refractive index of It is a display device.

[0007] This disclosure provides: (2) A substrate; a plurality of light-emitting elements arranged two-dimensionally on the substrate, each of which has a plurality of first electrodes, an organic layer arranged on the plurality of first electrodes, and a second electrode covering the organic layer; a protective layer covering the plurality of light-emitting elements; a plurality of color filters provided on the protective layer; a planarization layer provided between the protective layer and the color filter; a plurality of lenses disposed in the planarization layer; Equipped with a plurality of sub-pixels are formed corresponding to the plurality of light-emitting elements, the lens has a ring shape with a convex surface portion that is convex in a direction away from the substrate, and the lens is provided on a periphery of the sub-pixel in a plan view of the sub-pixel, the planarization layer includes a first planarization layer and a second planarization layer stacked on the first planarization layer and having a refractive index higher than that of the first planarization layer; the lens is provided on the first planarization layer; The refractive index of the lens is higher than the refractive index of the second planarization layer. It is a display device.

[0009] The present disclosure also relates to, for example, 3 ) ( 1) or (2) The present invention may also be applied to an electronic device equipped with the display device described above. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a cross-sectional view for explaining an example of a display device according to the first embodiment. [Figure 2] Fig. 2A is a plan view for explaining one embodiment of a display device, and Fig. 2B is a partially enlarged plan view of an area XS enclosed by a dashed line in Fig. 2A. [Figure 3] 3A and 3B are plan views showing examples of the layout of sub-pixels and ring-shaped lenses of a display device. [Figure 4] 4A and 4B are cross-sectional views showing an embodiment of a ring-shaped lens. [Figure 5] 5A, 5B, and 5C are cross-sectional views showing an embodiment of a ring-shaped lens. [Figure 6] FIG. 6 is a cross-sectional view for explaining an example of a display device according to the second embodiment. [Figure 7] FIG. 7 is a cross-sectional view for explaining an example of a display device according to the third embodiment. [Figure 8] FIG. 8 is a cross-sectional view for explaining an example of a display device according to the fourth embodiment. [Figure 9] FIG. 9 is a cross-sectional view for explaining an example of a display device according to the fifth embodiment. [Figure 10] Fig. 10A is a plan view showing a layout of sub-pixels and ring-shaped lenses of the display device of Fig. 9. Fig. 10B and Fig. 10C are plan views showing examples of a layout of sub-pixels and ring-shaped lenses of a display device according to a fifth embodiment. [Figure 11] FIG. 11 is a cross-sectional view for explaining an example of a display device according to the sixth embodiment. [Figure 12]FIG. 12 is a cross-sectional view for explaining an example of a display device according to the sixth embodiment. [Figure 13] FIG. 13 is a cross-sectional view for explaining an example of a display device according to the seventh embodiment. [Figure 14] 14A and 14B are diagrams illustrating an example of an electronic device using a display device. [Figure 15] FIG. 15 is a diagram illustrating an example of an electronic device using a display device. [Figure 16] FIG. 16 is a diagram illustrating an example of an electronic device using a display device. DETAILED DESCRIPTION OF THE INVENTION

[0011] An embodiment of the present disclosure will be described below with reference to the drawings. The description will be given in the following order: In this specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals, and redundant description will be omitted.

[0012] The explanation will be given in the following order. 1. First embodiment 2. Second embodiment 3. Third embodiment 4. Fourth Embodiment 5. Fifth Embodiment 6. Sixth Embodiment 7. Seventh Embodiment 8. Application Examples

[0013] The following description is a preferred example of the present disclosure, and the content of the present disclosure is not limited to these embodiments. Furthermore, in the following description, directions such as front-to-back, left-to-right, and up-down are indicated for the sake of convenience, but the content of the present disclosure is not limited to these directions. In the examples of FIGS. 1 and 2, the Z-axis direction is the up-down direction (the upper side is the +Z direction, and the lower side is the -Z direction), the X-axis direction is the front-to-back direction (the front side is the +X direction, and the rear side is the -X direction), and the Y-axis direction is the left-to-right direction (the right side is the +Y direction, and the left side is the -Y direction), and the description will be based on this. The same applies to FIGS. 3 to 13. The relative size and thickness ratios of each layer shown in each figure, such as FIG. 1, are shown for convenience and do not limit the actual size ratios. The same definitions and size ratios regarding these directions apply to each of FIGS. 2 to 16.

[0014] [1 First embodiment] [1-1 Display Device Configuration] 1 is a cross-sectional view showing an example of the configuration of an organic EL (Electroluminescence) display device 10 (hereinafter simply referred to as "display device 10") according to an embodiment of the present disclosure. The display device 10 includes a drive substrate 11, a plurality of light-emitting elements 13, a protective layer 15, a plurality of color filters 17, and a ring-shaped lens 19.

[0015] The display device 10 is a top-emission display device. In the display device 10, the drive substrate 11 is located on the back side of the display device 10, and the direction from the drive substrate 11 toward the light-emitting elements 13 (the +Z direction) is the front side (display surface 10A side, top side) of the display device 10. In the following description, in each layer constituting the display device 10, the surface facing the display surface 10A side of the display device 10 is referred to as the first surface (top surface), and the surface facing the back side of the display device 10 is referred to as the second surface (bottom surface).

[0016] (Sub-pixel configuration) In the example of the display device 10 shown in FIG. 1, one pixel is formed by a combination of multiple subpixels corresponding to multiple colors. In this example, three colors, red, green, and blue, are defined as the multiple colors, and three types of subpixels, subpixel 101R, subpixel 101G, and subpixel 101B, are provided. The subpixels 101R, subpixel 101G, and subpixel 101B are red, green, and blue subpixels, respectively, and display red, green, and blue, respectively. However, the example in FIG. 1 is merely an example, and the display device 10 is not limited to a case where multiple subpixels corresponding to multiple colors are provided. A single color may be provided, or a pixel may be formed without subpixels. Furthermore, the wavelengths of light corresponding to the red, green, and blue colors may be defined as wavelengths in the ranges of 610 nm to 650 nm, 510 nm to 590 nm, and 440 nm to 480 nm, respectively. In the example of Fig. 1, the layout of the sub-pixels 101R, 101G, and 101B is a striped layout as shown in Fig. 2B. Fig. 2B is an enlarged view of a portion of the display surface 10A of Fig. 2A. Fig. 2A is a view for explaining the display surface 10A of the display device 10.

[0017] In the following description, when there is no particular distinction between the sub-pixels 101R, 101G, and 101B, the term sub-pixel 101 will be used.

[0018] The peripheral portion 102 of the sub-pixel 101 refers to a portion having a predetermined width extending inward from the outer edge of the portion defined as the sub-pixel 101 in a plan view of the display surface 10A. The layout of the sub-pixels 101 is determined in advance, and the layout of the light-emitting elements 13 is determined according to the layout of the sub-pixels 101.

[0019] Furthermore, when a specific subpixel is selected, an adjacent subpixel (described later) adjacent to the subpixel 101 refers to a subpixel adjacent to the selected subpixel in a two-dimensional arrangement relative to the selected subpixel. For example, in the example shown in FIG. 1, the adjacent subpixels to the subpixel 101G are the subpixel 101R and the subpixel 101B as shown in FIG. 2B. In this case, the color filters of the adjacent subpixels (described later) are the color filter (red filter 17R) of the subpixel 101R and the color filter (blue filter 17B) of the subpixel 101B. The formation portion of each subpixel 101 may have a shape that roughly matches the formation portion of each color filter 17 as shown in FIGS. 2B, 3A, 3B, etc., or may have a shape that does not match the formation portion of the color filter 17.

[0020] (Drive board) The drive substrate 11 has various circuits provided on the substrate 11A for driving the plurality of light-emitting elements 13. Examples of the various circuits include a drive circuit for controlling the driving of the light-emitting elements 13 and a power supply circuit for supplying power to the plurality of light-emitting elements 13 (neither of which is shown).

[0021] Substrate 11A may be made of, for example, glass or resin with low moisture and oxygen permeability, or may be made of a semiconductor that facilitates the formation of transistors and the like. Specifically, substrate 11A may be a glass substrate, a semiconductor substrate, a resin substrate, or the like. Examples of glass substrates include high strain point glass, soda glass, borosilicate glass, forsterite, lead glass, and quartz glass. Examples of semiconductor substrates include amorphous silicon, polycrystalline silicon, and single crystal silicon. Examples of resin substrates include at least one selected from the group consisting of polymethyl methacrylate, polyvinyl alcohol, polyvinyl phenol, polyether sulfone, polyimide, polycarbonate, polyethylene terephthalate, and polyethylene naphthalate.

[0022] On the first surface of the drive substrate 11, a plurality of contact plugs (not shown) are provided for connecting the light emitting elements 13 to various circuits provided on the substrate 11A.

[0023] (light-emitting element) In the display device 10, a plurality of light-emitting elements 13 are provided on a first surface of a drive substrate 11. In the example of FIG. 2, the plurality of light-emitting elements 13 are formed as individual light-emitting elements 13R, 13G, and 13B corresponding to the individual sub-pixels 101R, 101G, and 101B. In this specification, when there is no particular distinction between the types of light-emitting elements 13R, 13G, and 13B, the term "light-emitting element 13" is used. The plurality of light-emitting elements 13 are two-dimensionally arranged in a predetermined arrangement pattern, such as a matrix. In the example of FIG. 2A, the plurality of light-emitting elements 13 are two-dimensionally arranged in two predetermined directions (X-axis direction and Y-axis direction in FIG. 2A). FIG. 2A is a plan view illustrating an example of a display surface 10A of the display device 10. In FIG. 2A, reference numeral 10B denotes a region outside the display surface 10A.

[0024] The light-emitting element 13 is configured to be able to emit white light. The light-emitting element 13 is, for example, a white OLED (Organic Light-Emitting Diode) or a white Micro-OLED (MOLED). In this embodiment, the display device 10 uses the light-emitting element 13 and a color filter 17 as a colorization method.

[0025] The light-emitting element 13 includes a first electrode 130A, an organic layer 130B, and a second electrode 130C. The first electrode 130A, the organic layer 130B, and the second electrode 130C are stacked in this order from the drive substrate 11 side toward the counter substrate 21.

[0026] (first electrode) In the display device 10, a plurality of first electrodes 130A are provided on the first surface side of the drive substrate 11. The first electrodes 130A are electrically separated for each sub-pixel 101 by an insulating layer 14, which will be described later. The first electrodes 130A are anodes. It is preferable that the first electrodes 130A also function as a reflective layer. From this perspective, it is preferable that the first electrodes 130A have as high a reflectivity as possible. Furthermore, in order to improve luminous efficiency, it is preferable that the first electrodes 130A be made of a material with a large work function.

[0027] The first electrode 130A is composed of at least one layer of a metal layer and a metal oxide layer. For example, the first electrode 130A may be composed of a single layer of a metal layer or a metal oxide layer, or a laminated film of a metal layer and a metal oxide layer. When the first electrode 130A is composed of a laminated film, the metal oxide layer may be provided on the organic layer 130B side, or the metal layer may be provided on the organic layer 130B side. However, from the viewpoint of having a layer having a high work function adjacent to the organic layer 130B, it is preferable that the metal oxide layer be provided on the organic layer 130B side.

[0028] The metal layer contains at least one metal element selected from the group consisting of chromium (Cr), gold (Au), platinum (Pt), nickel (Ni), copper (Cu), molybdenum (Mo), titanium (Ti), tantalum (Ta), aluminum (Al), magnesium (Mg), iron (Fe), tungsten (W), and silver (Ag). The metal layer may contain at least one metal element as a constituent element of an alloy. Specific examples of the alloy include aluminum alloys and silver alloys. Specific examples of the aluminum alloy include AlNd and AlCu.

[0029] The metal oxide layer includes, for example, at least one of a mixture of indium oxide and tin oxide (ITO), a mixture of indium oxide and zinc oxide (IZO), and titanium oxide (TiO).

[0030] (Second electrode) In the light-emitting element 13, the second electrode 130C is provided opposite the first electrode 130A. The second electrode 130C is provided as a common electrode for all sub-pixels 101. The second electrode 130C is a cathode. The second electrode 130C is a transparent electrode that is transparent to light generated in the organic layer 130B. Here, the transparent electrode also includes a semi-transparent reflective layer. In order to increase light-emitting efficiency, it is preferable that the second electrode 130C be made of a material that is as transparent as possible and has a small work function.

[0031] The second electrode 130C is composed of at least one layer of a metal layer and a metal oxide layer. More specifically, the second electrode 130C is composed of a single layer of a metal layer or a metal oxide layer, or a laminated film of a metal layer and a metal oxide layer. When the second electrode 130C is composed of a laminated film, the metal layer may be provided on the organic layer 130B side, or the metal oxide layer may be provided on the organic layer 130B side. However, from the viewpoint of having a layer having a low work function adjacent to the organic layer 130B, it is preferable that the metal layer be provided on the organic layer 130B side.

[0032] The metal layer contains at least one metal element selected from the group consisting of magnesium (Mg), aluminum (Al), silver (Ag), calcium (Ca), and sodium (Na). The metal layer may contain at least one of the above metal elements as a constituent element of an alloy. Specific examples of the alloy include an MgAg alloy, an MgAl alloy, and an AlLi alloy. The metal oxide contains at least one of a mixture of indium oxide and tin oxide (ITO), a mixture of indium oxide and zinc oxide (IZO), and zinc oxide (ZnO).

[0033] (organic layer) The organic layer 130B is provided between the first electrode 130A and the second electrode 130C. The organic layer 130B is provided as an organic layer common to all sub-pixels. The organic layer 130B is configured to be able to emit white light. However, this does not prohibit the emission color of the organic layer 130B from being other than white, and colors such as red, blue, and green may also be used. In other words, the emission color of the organic layer 130B may be, for example, any one of white, red, blue, and green.

[0034] The organic layer 130B has a structure in which a hole injection layer, a hole transport layer, a light-emitting layer, and an electron transport layer are stacked in this order from the first electrode 130A toward the second electrode 130C. Note that the structure of the organic layer 130B is not limited to this, and layers other than the light-emitting layer may be provided as needed.

[0035] The hole injection layer is a buffer layer that increases the efficiency of hole injection into the light-emitting layer and suppresses leakage. The hole transport layer is a buffer layer that increases the efficiency of hole transport into the light-emitting layer. The light-emitting layer generates light by recombining electrons and holes when an electric field is applied. The light-emitting layer is an organic light-emitting layer containing an organic light-emitting material. The electron transport layer is an electron injection layer that increases the efficiency of electron transport into the light-emitting layer. An electron injection layer may be provided between the electron transport layer and the second electrode 130C. This electron injection layer increases the efficiency of electron injection.

[0036] (insulating layer) In the display device 10, as shown in FIG. 1, it is preferable that an insulating layer 14 is provided on the first surface side of the drive substrate 11. The insulating layer 14 is provided between adjacent first electrodes 130A and electrically separates each first electrode 130A into each light-emitting element 13 (i.e., each sub-pixel 101). The insulating layer 14 also has a plurality of openings 14A, and the first surfaces (surfaces facing the second electrodes 130C) of the first electrodes 130A are exposed through the openings 14A. In the example shown in FIG. 1 etc., the insulating layer 14 covers the areas from the periphery to the side surfaces (edge ​​surfaces) of the first surfaces of the separated first electrodes 130A. In this case, each opening 14A is disposed on the first surface of the corresponding first electrode 130A. In this case, the first electrodes 130A are exposed through the openings 14A, and this exposed area defines the light-emitting area of ​​the light-emitting element 13. In this specification, the peripheral portion of the first surface of the first electrode 130A refers to a region having a predetermined width extending from the outer peripheral edge of the first surface of each first electrode 130A toward the inside of the first surface. In the example of Figure 1, a portion covered with the insulating layer 14 is formed on the first surface of the first electrode 130A within the peripheral portion 102 of the subpixel 101, and the peripheral edge of the opening 14A is located within the peripheral portion 102.

[0037] The insulating layer 14 is made of, for example, an organic material or an inorganic material. The organic material includes, for example, at least one of polyimide and acrylic resin. The inorganic material includes, for example, at least one of silicon oxide, silicon nitride, silicon oxynitride, and aluminum oxide.

[0038] (protective layer) A protective layer 15 is formed on the first surface of the second electrode 130C. The protective layer 15 isolates the light emitting element 13 from the outside air and prevents moisture from entering the light emitting element 13 from the external environment. In addition, when the second electrode 130C is made of a metal layer, the protective layer 15 may have a function of preventing oxidation of the metal layer.

[0039] The protective layer 15 is formed of an insulating material. For example, a thermosetting resin can be used as the insulating material. Other insulating materials include SiO, SiON, AlO, and TiO. In this case, examples of the protective layer 15 include a CVD film containing SiO, SiON, and the like, and an ALD film containing AlO, TiO, and SiO, and the like. The protective layer 15 may be formed as a single layer or a laminate of multiple layers. In the example of FIG. 1, the protective layer 15 is formed as a laminate of a first protective layer 15A and a second protective layer 15B. In this case, it is preferable that the first protective layer 15A is formed as a CVD film and the second protective layer 15B is formed as an ALD film. The CVD film refers to a film formed using chemical vapor deposition. The ALD film refers to a film formed using atomic layer deposition.

[0040] (flattening layer) A planarization layer 16 is preferably provided on the first surface of the protective layer 15. The formation of the planarization layer 16 allows the lenses 19 to be formed on the planarization layer 16 with high precision. Furthermore, since the planarization layer 16 is formed between the protective layer 15 and the color filter 17, even if irregularities are formed on the first surface of the protective layer 15, the presence of the planarization layer 16 allows the color filter 17 to be provided with high precision. Furthermore, the planarization layer 16, together with the protective layer 15, preferably has the function of insulating the light-emitting element 13 from the outside air and suppressing the penetration of moisture from the external environment into the light-emitting element 13.

[0041] Examples of materials for forming the planarizing layer 16 include ultraviolet curable resins and thermosetting resins.

[0042] (Color filter) The color filter 17 is provided on the first surface side (upper side, +Z direction side) of the protective layer 15, and in the example of FIG. 1, it is provided on the planarization layer 16. The color filter 17 shown in the first embodiment is an on-chip color filter (OCCF). As shown in the example of FIG. 1, the color filter 17 may include, for example, a red color filter (red filter 17R), a green color filter (green filter 17G), and a blue color filter (blue filter 17B). The red filter 17R, the green filter 17G, and the blue filter 17B are provided facing the light-emitting element 13R for the red sub-pixel, the light-emitting element 13G for the green sub-pixel, and the light-emitting element 13B for the blue sub-pixel, respectively. As a result, the white light emitted from each light-emitting element 13R, 13G, 13B in the red sub-pixel 101R, green sub-pixel 101G, and blue sub-pixel 101B passes through the above-mentioned red filter 17R, green filter 17G, and blue filter 17B, respectively, and red light, green light, and blue light are respectively emitted from the display surface 10A.

[0043] 1 is merely an example, and is not intended to limit the types of color filters 17 to a combination of three types: red, green, and blue. For example, the types of color filters 17 may be a combination of four types: red, green, blue, and white.

[0044] (Color filter array) 1, the color filters 17 are arranged such that red filters 17R, green filters 17G, and blue filters 17B are repeatedly arranged in this order. In this example, the color filters 17 (red filters 17R, green filters 17G, and blue filters 17B) are formed in stripes in accordance with the sub-pixels 101, as shown in FIGS. 1 and 2B.

[0045] (lens) The display device 10 is provided with a ring-shaped lens 19. In the example of FIG. 1, a lens 19 is disposed in each sub-pixel 101, and a plurality of lenses 19 are provided overall. Each lens 19 has a convex surface portion 19A that is convex in the direction away from the substrate 11A (direction away from the drive substrate 11). Specifically, in the example of FIG. 1, the convex surface portion 19A of the lens 19 forms a convex curved surface.

[0046] (Lens arrangement in plan view of sub-pixel) Regarding the arrangement of the lenses 19 in a plan view of the subpixels 101, each lens 19 is provided at a position on the periphery 102 of the corresponding subpixel 101. For example, as shown in FIGS. 1 and 2B, the lens 19 provided in the green subpixel 101G is provided on the periphery 102G of the green subpixel 101G. The lens 19 provided in the red subpixel 101R is provided on the periphery 102R of the red subpixel 101R. The lens 19 provided in the blue subpixel 101B is provided on the periphery 102B of the blue subpixel 101B.

[0047] Furthermore, the lenses 19 are arranged in positions that avoid spanning the color filters 17 of adjacent subpixels. For example, in the example of FIG. 1, the lens 19 provided in the green subpixel 101G is arranged in a position that avoids the formation region of the red filter 17R of the subpixel 101R, which is the subpixel adjacent to the green filter 17G. Furthermore, the lens 19 provided in the green subpixel 101G is arranged in a position that avoids the formation region of the blue filter 17B of the subpixel 101B, which is the subpixel adjacent to the green filter 17G. Therefore, when the green filter 17G, the red filter 17R, and the blue filter 17B are in contact with each other at their side surfaces as in FIG. 1, the lens 19 is arranged so as not to span the boundaries between the green filter 17G, the red filter 17R, and the blue filter 17B.

[0048] When the formation area of ​​the color filter 17 and the area of ​​the sub-pixel 101 are substantially aligned, for example, the lens 19 provided in the green sub-pixel 101G is provided inside the green filter 17G along the periphery of the green filter 17G in a plan view of the green sub-pixel 101G. The same applies to the lens 19 provided in the red sub-pixel 101G and the lens 19 provided in the blue sub-pixel 101B.

[0049] (Position of the convex part) The lens 19 is provided in the color filter 17 so that the color filter 17 forms an outer portion 190. The outer portion 190 refers to the portion of the outer side of the lens 19 that contacts the convex portion 19A. That is, in the display device 10, the convex portion 19A of the lens 19 contacts the color filter 17. The bottom surface 191 of the lens 19 contacts the first surface of the planarization layer 16. The lens 19 forms the convex portion 19A in a direction away from the substrate 11A, with the first surface of the planarization layer 16 as its base end. By forming the lens 19 on the first surface of the planarization layer 16, the lens 19 can be formed more precisely.

[0050] (Lens cross-sectional shape) The cross-sectional shape of the lens 19 is not particularly limited as long as it allows light generated by the light-emitting element 13 of a specific sub-pixel 101 and incident on the lens 19 to pass through the color filter 17 corresponding to that sub-pixel 101. In the example of FIG. 1, the cross-sectional shape of the lens 19 is a tongue-like shape with a curved tip. However, the cross-sectional shape is not limited to this shape. For example, as shown in FIGS. 4A, 4B, 5A, 5B, and 5C, the lens 19 may have a semicircular, elliptical, trapezoidal, or triangular cross-sectional shape. Note that the cross-sectional shape of the lens 19 refers to the cross-sectional shape observed when the lens is cut along a plane whose normal direction is the circumferential direction of the lens 19. The cross-sectional shape of the lens 19 may be symmetrical as shown in FIGS. 1, 4A, and 4B, or asymmetrical as shown in FIGS. 5A, 5B, and 5C. The symmetrical shape referred to here refers to a shape that is approximately symmetrical with respect to a line parallel to the Z-axis direction. When the longitudinal cross-sectional shape of the lens 19 is asymmetric, it is preferable that the outer slope be steeper than the inner slope in terms of effectively suppressing color mixing. FIG. 4A shows a case where the longitudinal cross-sectional shape of the lens 19 is an isosceles triangle. FIG. 4B shows a case where the longitudinal cross-sectional shape of the lens 19 is an isosceles trapezoid. FIG. 5A shows a case where the longitudinal cross-sectional shape of the lens 19 is a triangle in which the lengths of the two sides extending from the protruding end of the lens 19 to the bottom surface of the lens 19 are different. FIG. 5B shows a case where the longitudinal cross-sectional shape of the lens 19 is a non-isosceles trapezoid. FIG. 5C shows a case where the longitudinal cross-sectional shape of the lens 19 is a convex curved shape in which the curvature of the curve extending from the protruding end of the lens 19 to the bottom surface of the lens is different. For ease of explanation, the filled resin layer 20 and the opposing substrate 21 are omitted from the examples of FIGS. 4A, 4B, 5A, 5B, and 5C.

[0051] (lens refractive index) The refractive index of the lens 19 is higher than the refractive index of the outer portion 190. This makes it easier for light traveling from the inside of the lens 19 toward the outer portion 190 to be totally reflected and refracted, with the convex portion 19A of the lens 19 serving as the interface. Furthermore, light incident on the lens 19 of a specific subpixel 101 is refracted by the convex portion 19A of the lens 19, making it less likely for the light to travel toward an adjacent subpixel. In the example of FIG. 1 , the refractive index of the lens 19 is higher than the refractive index of the color filter 17.

[0052] (lens material) As with the planarization layer 16, the material for forming the lenses 19 can be, for example, an ultraviolet-curable resin or a thermosetting resin. The lenses 19 are preferably formed from a photosensitive resin material. In this case, the lenses 19 can be easily formed with high precision using photolithography techniques or the like. Also, the adhesion between the lenses 19 and the planarization layer 16 can be easily improved.

[0053] Furthermore, the lens 19 is made of a light-transmitting material. By making the lens 19 of a light-transmitting material, the light generated by the light-emitting element 13 can more reliably travel through the lens 19. Furthermore, the lens 19 may be transparent, or may be colored to match the color type of the sub-pixel 101. When the lens 19 is disposed within the color filter 17, the color uniformity of the light that has passed through the color filter 17 within the sub-pixel 101 can be improved by coloring the lens 19.

[0054] (Filled resin layer) A filled resin layer 20 may be formed on the first surface side of the color filter 17. The filled resin layer 20 can smooth the surface of the first surface on which the color filter 17 is formed. The filled resin layer 20 can also function as an adhesive layer for adhering the counter substrate 21 described below. Examples of the filled resin layer 20 include an ultraviolet curable resin and a thermosetting resin.

[0055] (opposing substrate) The counter substrate 21 is provided on the filled resin layer 20 in a state facing the drive substrate 11. The counter substrate 21 seals the light emitting elements 13 together with the filled resin layer 20. The counter substrate 21 may be made of the same material as the substrate 11A that forms the drive substrate 11, and is preferably made of a material such as glass.

[0056] [1-2 Action and Effects] In a display device including a light-emitting element having an organic layer and a color filter, a portion of light generated from a light-emitting element of a given subpixel travels toward the color filter of an adjacent subpixel, which can cause color leakage into the adjacent subpixel or color mixing in the pixel. According to the display device 10 of the first embodiment, a ring-shaped lens 19 is disposed around the periphery 102 of the subpixel 101 in a plan view to prevent the light from entering the color filter 17 adjacent to the color filter 17 corresponding to the subpixel 101. The refractive index of the lens 19 is higher than that of its outer portion 190. Therefore, even if a portion of light L1 generated from the light-emitting element 13 of a given subpixel 101 travels toward the color filter 17 of the adjacent subpixel, the light undergoes at least one of total reflection and refraction within the lens 19, becoming light L2 that travels through the given subpixel 101. This reduces the amount of light L3 of the light L1 that travels directly to the adjacent subpixel. Thus, according to the first embodiment, it is possible to suppress so-called color leakage, in which light generated by a light-emitting element 13 corresponding to a predetermined sub-pixel 101 leaks into an adjacent sub-pixel, and it is possible to improve the extraction efficiency of light generated by the light-emitting element 13 of the predetermined sub-pixel 101.

[0057] [1-3 Modified example of display device] In the display device 10 of the first embodiment, the layout of the sub-pixels 101R, 101G, and 101B is not limited to the example shown in FIG. 1 and may be, for example, a delta-shaped layout as shown in FIG. 3A or a square layout as shown in FIG. 3B. In this case, it is preferable that the color filters 17 (red filters 17R, green filters 17G, and blue filters 17B) are also arranged in a manner that matches the layout of the sub-pixels 101. For example, when the sub-pixels 101 are arranged in a delta shape, the color filters 17 are also arranged in a delta shape. Note that, as shown in the examples of FIGS. 3A and 3B, the sizes of the sub-pixels 101 and the color filters 17 may be approximately the same, or the size of the color filters 17 may be larger than the size of the sub-pixels 101. Note that the delta-shaped layout refers to an arrangement in which the centers of the three sub-pixels 101R, 101G, and 101B are connected to form a triangle. The square arrangement refers to an arrangement in which the centers of four sub-pixels (sub-pixels 101R, 101G, 101B, and 101B in the example of FIG. 3B) are connected to form a square.

[0058] [2 Second embodiment] [2-1 Display Device Configuration] A display device 10 according to a second embodiment will be described. As shown in Fig. 6, the display device 10 according to the second embodiment includes a drive substrate 11, a plurality of light-emitting elements 13, a protective layer 15, and a plurality of color filters 17, similar to the first embodiment, and further includes a ring-shaped lens 19. Also, similar to the first embodiment, the display device 10 according to the second embodiment has a plurality of sub-pixels 101 defined corresponding to each of the plurality of light-emitting elements 13.

[0059] The drive substrate 11, the plurality of light-emitting elements 13, and the protective layer 15 may be the same as those in the first embodiment. The plurality of color filters 17 may be configured in the same manner as those in the first embodiment, except that the lenses 19 may not be disposed therein. However, this does not restrict the second embodiment from further providing the lenses 19 within the color filters 17. In the second embodiment, the lenses 19 may be provided within the planarization layer 16 and the color filters 17, which will be described later.

[0060] (flattening layer) In the display device 10 according to the second embodiment, a planarization layer 16 is formed between the protective layer 15 and the color filter 17. In the example of FIG. 6, the planarization layer 16 has a first planarization layer 16A and a second planarization layer 16B stacked on the first planarization layer 16A. In the planarization layer 16, a second surface (lower surface) of the first planarization layer 16A faces the protective layer 15, and a first surface (upper surface) of the second planarization layer 16B faces the color filter 17. The refractive index of the second planarization layer 16B is higher than the refractive index of the first planarization layer 16A.

[0061] The materials of the first planarization layer 16A and the second planarization layer 16B are not particularly limited, but as described above, it is preferable to select a material having a higher refractive index for the second planarization layer 16B than for the first planarization layer 16A. In this case, since the refractive index of the second planarization layer 16B is higher than that of the first planarization layer 16A, light easily travels from the first planarization layer 16A to the second planarization layer 16B.

[0062] (lens) In the display device 10 according to the second embodiment, the lens 19 is provided in the planarization layer 16 so that the planarization layer 16 forms an outer portion 190. A bottom surface 191 of the lens 19 is disposed on the first surface of the first planarization layer 16A.

[0063] Furthermore, the outer portion 190 of the lens is the second planarization layer 16B, and the refractive index of the lens 19 is higher than that of the second planarization layer 16B. Therefore, in the second embodiment, light traveling from the inside of the lens 19 toward the second planarization layer 16B, which is the outer portion 190, is subjected to at least one of total reflection and refraction, with the convex portion 19A of the lens 19 serving as the interface. This makes it possible to suppress light leakage to adjacent subpixels. Note that apart from these points, the lens 19 is the same as in the first embodiment. For example, the shape of the lens 19 and the arrangement of the lens 19 in a planar view of the subpixel 101 are also the same as in the first embodiment.

[0064] [2-2 Action and Effects] The display device 10 according to the second embodiment includes a ring-shaped lens 19, similar to the first embodiment. The lens 19 is positioned such that the convex portion 19A is located within the second planarization layer 16B, which has a refractive index lower than that of the lens 19. As a result, as shown in FIG. 6 , the display device 10 allows light generated by the light-emitting element 13 corresponding to a given subpixel 101 and directed toward an adjacent subpixel to undergo at least one of total reflection and refraction by the lens 19, thereby allowing the light to travel within the given subpixel. For example, when light L1 generated by the light-emitting element 13G corresponding to the green subpixel 101G and directed toward the adjacent blue subpixel 101B travels within the lens 19, the light L1 undergoes at least one of total reflection and refraction by the convex portion 19A of the lens 19, becoming light L2 traveling within the subpixel 101G. This allows light L3, which is part of the light L1 and directed toward the blue subpixel 101B, to be suppressed, thereby reducing light leakage. Thus, according to the second embodiment, it is possible to suppress so-called color leakage, in which light generated by a light-emitting element 13 corresponding to a specific sub-pixel 101 leaks into an adjacent sub-pixel, and to suppress color mixing in the pixel due to color leakage.

[0065] [3 Third embodiment] [3-1 Display Device Configuration] A display device 10 according to a third embodiment will be described. As shown in Fig. 7, the display device 10 according to the third embodiment includes a first substrate 30, a second substrate 31, and a sealing resin layer 32 that bonds the first substrate 30 and the second substrate 31 together.

[0066] (First substrate) The first substrate 30 has a drive substrate 11, a light-emitting element 13 arranged on the drive substrate 11, and a protective layer 15. The drive substrate 11, the light-emitting element 13, and the protective layer 15 in the display device 10 according to the third embodiment may be the same as those in the first embodiment.

[0067] In the display device 10, a plurality of sub-pixels 101 corresponding to a plurality of light-emitting elements 13, respectively, are formed, as in the first embodiment.

[0068] (flattening layer) The first substrate 30 preferably has a planarization layer 16 provided on the protective layer 15. By providing the planarization layer 16, the lenses 19 can be positioned with high precision on the first substrate 30. The planarization layer 16 can be formed in the same manner as in the first embodiment.

[0069] (Second substrate) The second substrate 31 has a counter substrate 21 and a plurality of color filters 37. The counter substrate 21 may be the same as that in the first embodiment.

[0070] (Color filter) The plurality of color filters 37 may be formed similarly to the color filters 17 of the first embodiment, except that they are provided on the second surface side (lower side, −Z direction side) of the second substrate 31 (FIG. 7). In the example of FIG. 7, as in the first embodiment, for example, a red color filter (red filter 37R), a green color filter (green filter 37G), and a blue color filter (blue filter 37B) are arranged as the plurality of color filters 37. As in the first embodiment, the red filter 37R, the green filter 37G, and the blue filter 37B are arranged facing the light-emitting element 13R for the red sub-pixel, the light-emitting element 13G for the green sub-pixel, and the light-emitting element 13B for the blue sub-pixel, respectively. In the example of FIG. 7, the color filters 37 are arranged such that the red filter 37R, the green filter 37G, and the blue filter 37B are repeatedly arranged in this order.

[0071] 7, a filling resin layer 20 may be formed between the counter substrate 21 and the color filter 37, as in the first embodiment. However, this does not prohibit the color filter 37 from being formed on the counter substrate 21 surface without the filling resin layer 20 therebetween.

[0072] (Sealing resin layer) The sealing resin layer 32 bonds the protective layer 15 of the first substrate 30 and the color filter 37 of the second substrate 31 to each other. At this time, the light emitting elements 13 of the first substrate and the color filter of the second substrate are aligned with each other. The alignment can be achieved by facing the first substrate 30 and the second substrate 31 so that the red filter 37R corresponds to the light emitting element 13R, the green filter 37G corresponds to the light emitting element 13G, and the blue filter 37B corresponds to the light emitting element 13B.

[0073] The material of the sealing resin layer 32 is not particularly limited as long as it can transmit the light generated by the light-emitting element 13 toward the color filter 37, and may be formed of the same material as the planarization layer 16 described in the first embodiment.

[0074] (lens) In the display device 10 according to the third embodiment, lenses 19 are provided in the periphery 102 of the sub-pixels 101, as in the first and second embodiments.

[0075] However, in the third embodiment, as shown in FIG. 7 , the lens 19 is provided in the sealing resin layer 32 so that the sealing resin layer 32 forms an outer portion 190. The lens 19 is also provided on the first substrate 30 and has a convex portion 19A that is convex in a direction away from the first substrate 30. Other than these points, the lens 19 is the same as in the first embodiment. For example, the arrangement of the lens 19 in a plan view of the subpixel 101 is also the same as in the first embodiment. That is, the lens 19 is provided at a position that avoids straddling adjacent color filters 37 in a plan view of the subpixel 101. For example, the lens 19 provided in the subpixel 101G is formed so as not to enter the portions where the color filters (red filter 37R and blue filter 37B) of the subpixels 101R and 101B that are adjacent to the subpixel 101G are formed.

[0076] In the display device 10 according to the third embodiment, the sealing resin layer 32 forms the outer portion 190 of the lens 19, and the refractive index of the lens 19 is higher than the refractive index of the sealing resin layer 32. Therefore, in the third embodiment, at least one of total reflection and refraction occurs in light traveling from the inside of the lens 19 toward the sealing resin layer 32, which forms the outer portion 190, with the convex portion 19A of the lens 19 as the interface, thereby suppressing light leakage to adjacent sub-pixels.

[0077] It is preferable that the bottom surface 191 of the lens 19 is located on the first surface of the planarizing layer 16, as in the first embodiment.

[0078] [3-2 Action and Effects] The display device 10 according to the third embodiment is provided with a ring-shaped lens, as in the first embodiment. The lens 19 is positioned so that the convex portion 19A is present within the sealing resin layer 32, which has a refractive index lower than that of the lens 19. As a result, the display device 10, like the first and second embodiments, can suppress the amount of light L3, of the light L1 generated by the light-emitting element 13 corresponding to a given sub-pixel 101, traveling to an adjacent sub-pixel, thereby increasing the amount of light L2 traveling through the given sub-pixel 101. Therefore, the display device 10 according to the third embodiment can suppress light leakage to adjacent sub-pixels and suppress color mixing between pixels.

[0079] [4 Fourth embodiment] [4-1 Display Device Configuration] A display device 10 according to a fourth embodiment will be described. As shown in Fig. 8, the display device 10 according to the fourth embodiment is formed in the same manner as the third embodiment, except that the lens 19 is arranged on the second surface side of the second substrate 31 instead of on the first surface side of the first substrate 30.

[0080] In this display device 10, the lens 19 is provided on the second substrate 31 and has a convex portion 19A that is convex in a direction away from the second substrate 31. The lens 19 is provided in the sealing resin layer 32 so that the sealing resin layer 32 forms an outer portion 190. The surface corresponding to the bottom surface 191 of the lens 19 in the third embodiment is located on the second surface side of the second substrate 31 in the fourth embodiment. In the example of FIG. 8 , a planarization layer 36 is formed on the second surface side of the color filter 37 on the second substrate 31, and the lens 19 is formed on the second surface side of the planarization layer 36. This makes it easy to form the lens 19 accurately on the second surface side of the second substrate 31. The planarization layer 36 may be formed using the same material as the planarization layer 16 in the first embodiment.

[0081] [4-2 Action and Effects] In the display device 10 according to the fourth embodiment, a ring-shaped lens 19 is provided in each subpixel 101. The lens 19 is positioned so that a convex portion 19A is present in the sealing resin layer 32, which has a refractive index lower than that of the lens 19. As a result, in the display device 10, light L1 generated by a light-emitting element corresponding to a specific subpixel 101 and traveling toward an adjacent subpixel is at least totally reflected or refracted by the lens 19, thereby reducing the amount of light L3 entering the adjacent subpixel and increasing the amount of light L2 traveling within the specific subpixel 101. In this way, the display device 10 according to the fourth embodiment can reduce light leakage to adjacent subpixels.

[0082] [5 Fifth embodiment] [5-1 Display Device Configuration] In the display devices 10 of the first to fourth embodiments described above, it is preferable that the lenses 19 are provided at positions that avoid overlapping with the openings 14A in a plan view of the sub-pixels 101, as shown in Fig. 9 (fifth embodiment). Fig. 9 shows an example in which the lenses 19 are provided at positions that avoid overlapping with the openings 14A in the display device 10 of the first embodiment. Here, the description will continue based on this example.

[0083] In the display device 10 of the fifth embodiment, as described in the first embodiment, a plurality of first electrodes 130A are formed in a state separated from one another for each subpixel 101, and an insulating layer 14 is formed between adjacent first electrodes 130A. The insulating layer 14 has a plurality of openings 14A, and each opening 14A is disposed above a corresponding first electrode 130A.

[0084] 9 and 10A, in the fifth embodiment, the lenses 19 are provided at positions that avoid overlapping with the openings 14A in plan view of the subpixels 101, and therefore the lenses 19 are provided so as not to enter the portion directly above the openings 14A. Fig. 10A is a plan view illustrating the arrangement of the subpixels 101, the openings 14A, and the lenses 19 in the display device 10 of Fig. 9.

[0085] 9 and 10A, the size of the opening 14A is generally formed slightly smaller than the size of the color filter 17 so that it fits inside the formation area of ​​the color filter 17. In consideration of this, it is preferable that the ring-shaped lens 19 provided in the periphery 102 of a certain subpixel 101 is formed inside the color filter 17 and outside the opening 14A. That is, it is preferable that, in the subpixel 101, the inner periphery RI of the lens 19 does not extend into the portion immediately above the opening 14A, and the outer periphery RO of the lens 19 is located inside the edge of the color filter 17. In this case, the lens 19 is disposed in a portion of the periphery 102 of the subpixel 101 that is inside the color filter 17 and outside the opening 14A.

[0086] In the display device 10 according to the fifth embodiment, the lens 19 is preferably provided outside the opening 14A along the periphery of the opening 14A in a plan view of the subpixel 101, since this allows the lens 19 to efficiently change the direction of light traveling toward an adjacent subpixel. For example, in the example of Fig. 9, the inner peripheral edge R1 of the ring-shaped lens 19 provided in the peripheral portion 102G of the green subpixel 101G is formed along the periphery of the opening 14A so as not to enter the area directly above the opening 14A. The outer peripheral edge RO of the lens 19 is formed inside the outer peripheral edge of the color filter 17 (green filter 17G) so as not to enter the area where the color filters 17 (red filter 17R and blue filter 17B) corresponding to the subpixels 101R and 101B adjacent to the subpixel 101G are formed. These are the same for the ring-shaped lens 19 provided on the periphery 102R of the red sub-pixel 101R and the ring-shaped lens 19 provided on the periphery 102B of the blue sub-pixel 101B.

[0087] In plan view of the subpixel 101, the opening 14A may have a shape that matches the shape of the color filter 17 as shown in the examples of FIGS. 9 and 10A, or may not match the shape of the color filter 17 as shown in FIGS. 10B and 10C. FIG. 10B shows an example in which the color filter 17 is circular, the opening 14A is hexagonal, and a ring-shaped lens 19 is formed on the outer side of the opening 14A along the periphery of the opening 14A in the peripheral portion 102 of the subpixel 101. FIG. 10C shows an example in which the color filter 17 is roughly rectangular, the opening 14A is circular, and the ring-shaped lens 19 is formed on the outer side of the opening 14A along the periphery of the opening 14A in the peripheral portion 102 of the subpixel 101. In both the examples of FIGS. 10B and 10C, the shape is such that the opening does not extend into an adjacent subpixel.

[0088] [5-2 Action and Effects] In the display device 10 according to the fifth embodiment, the ring-shaped lens 19 is provided outside the opening 14A of the lens 19 in a plan view of the subpixel 101 so as not to enter directly above the opening 14A. As a result, light traveling directly above the opening 14A from the light-emitting element 13 in a specific subpixel 101 passes directly through the color filter 17 and is emitted to the outside from the display surface 10A. Furthermore, it is easy to increase the amount of light traveling obliquely from the light-emitting element 13 that passes through the lens 19. Therefore, light L1 generated by the light-emitting element 13 corresponding to the specific subpixel 101 and traveling toward an adjacent subpixel can be efficiently converted into light L2 traveling toward the specific subpixel 101, thereby suppressing the amount of light L3 that enters the adjacent subpixel directly.

[0089] [6 Sixth embodiment] [6-1 Display Device Configuration] In the display devices 10 of the first and second embodiments described above, and in an embodiment of the fifth embodiment including the configuration of the display device 10 of the first or second embodiment, a convex lens 24 may be further provided on the first surface side of the color filter 17, as shown in, for example, FIGS. 11 and 12 (sixth embodiment). In the display device 10 shown in the examples of FIGS. 11 and 12, a convex lens 24 is formed on the first surface of each of the plurality of color filters 17. FIG. 11 shows an example in which a convex lens 24 is formed in the display device 10 according to the first embodiment. FIG. 12 shows an example in which a convex lens 24 is formed in the display device 10 according to the second embodiment. For ease of explanation, the filled resin layer 20 and the counter substrate 21 are omitted in the examples of FIGS. 11 and 12.

[0090] (convex lens) Unlike the lens 19, the convex lens 24 is formed in a non-ring shape and is a single-sided convex lens. An example of the convex lens 24 is an on-chip microlens. The convex lens 24 can be formed by applying an on-chip microlens (OCL) formation method using a melting method, an etch-back method, or the like. The convex lens 24 may be formed from the same material as the ring-shaped lens 19 described in the first embodiment.

[0091] 11 and 12, a covering layer 25 that covers the color filter 17 is formed on the base end side of the convex lens 24 (between the convex lens 24 and the color filter 17). The covering layer 25 may be made of the same material as the material used to form the convex lens 24. When the covering layer 25 is formed on the color filter 17, exposure of the color filter 17 can be effectively suppressed.

[0092] [6-2 Action and Effects] According to the display device 10 of the sixth embodiment, as in the first and second embodiments, the lens 19 can change the traveling direction of light L1 generated by the light-emitting element 13 corresponding to a specific sub-pixel 101 toward an adjacent sub-pixel to light L2 traveling through the specific sub-pixel, thereby reducing the amount of light L3 traveling toward the adjacent sub-pixel. This makes it possible to reduce light leakage to the adjacent sub-pixel. Furthermore, according to the sixth embodiment, the provision of the convex lens 24 makes it easy to align the direction of light emitted from the display surface 10A.

[0093] [7 Seventh embodiment] [7-1 Display Device Configuration] In the display device 10 of the third embodiment described above, and in an embodiment of the fifth embodiment including the configuration of the display device 10 of the third embodiment, a convex lens 26 may be further provided on the second surface side of the color filter 37, as shown in FIG. 13 (seventh embodiment). In the display device 10 shown in the example of FIG. 13, a convex lens 26 is formed on the second surface side of each of the plurality of color filters 37. The convex lens 26 may be formed using the same material and by the same method as the convex lens 24 described in the sixth embodiment. Furthermore, in the display device 10 according to the seventh embodiment, a covering layer 27 covering the color filter 37 may be formed between the convex lens 26 and the color filter 37, as also described in the sixth embodiment. This covering layer 27 may be formed in the same manner as the covering layer 25 formed between the convex lens 24 and the color filter 17 described in the sixth embodiment.

[0094] [7-2 Action and Effects] According to the display device 10 of the seventh embodiment, as in the sixth embodiment, the lens 19 can change the traveling direction of light L1 generated by the light emitting element 13 corresponding to a predetermined sub-pixel 101, that is traveling toward an adjacent sub-pixel, to light L2 traveling through the predetermined sub-pixel, thereby reducing the amount of light L3 traveling toward the adjacent sub-pixel. Furthermore, according to the seventh embodiment, the provision of the convex lens 26 makes it easy to align the direction of light emitted from the display surface 10A side.

[0095] [8 Application Examples] (electronic equipment) The display device 10 according to the embodiment described above may be provided in various electronic devices, and is particularly preferably provided in devices that require high resolution and are used near the eyes in a magnified state, such as an electronic viewfinder for a video camera or a single-lens reflex camera, or a head-mounted display.

[0096] (Example 1) Fig. 14A is a front view showing an example of the appearance of digital still camera 310. Fig. 14B is a rear view showing an example of the appearance of digital still camera 310. This digital still camera 310 is an interchangeable lens single-lens reflex type, and has an interchangeable taking lens unit (interchangeable lens) 312 located approximately in the center of the front of camera main body 311, and a grip part 313 on the left side of the front for the photographer to hold.

[0097] A monitor 314 is provided at a position shifted to the left from the center on the back of the camera body 311. An electronic viewfinder (eyepiece window) 315 is provided above the monitor 314. By looking through the electronic viewfinder 315, the photographer can visually confirm the optical image of the subject guided by the photographing lens unit 312 and determine the composition. Any of the display devices 10 according to the above-described embodiment and modified examples can be used as the electronic viewfinder 315.

[0098] (Example 2) 15 is a perspective view showing an example of the appearance of a head-mounted display 320. The head-mounted display 320 has, for example, ear hooks 322 on both sides of a glasses-shaped display unit 321 for wearing on the user's head. As the display unit 321, any of the display devices 10 according to the above-described embodiment and modified examples can be used.

[0099] (Example 3) 16 is a perspective view showing an example of the appearance of a television device 330. This television device 330 has, for example, an image display screen unit 331 including a front panel 332 and a filter glass 333, and this image display screen unit 331 is configured by any of the display devices 10 according to the above-described embodiment and modifications.

[0100] The above provides a specific description of the display devices and application examples according to the first to seventh embodiments and their respective modifications of the present disclosure, but the present disclosure is not limited to the display devices and application examples according to the above-described first to seventh embodiments and their respective modifications, and various modifications based on the technical ideas of the present disclosure are possible.

[0101] For example, the configurations, methods, processes, shapes, materials, and numerical values, etc., given in the display devices according to the first to seventh embodiments and their respective modifications, and in the application examples, are merely examples, and different configurations, methods, processes, shapes, materials, and numerical values, etc., may be used as necessary.

[0102] The configurations, methods, processes, shapes, materials, numerical values, etc. of the display devices according to the above-described first to seventh embodiments and their respective modifications, and application examples can be combined with each other as long as they do not deviate from the gist of this disclosure.

[0103] Unless otherwise specified, the materials exemplified in the display devices according to the first to seventh embodiments and their respective modifications, and in the application examples, can be used singly or in combination of two or more.

[0104] The present disclosure may also employ the following configuration. (1) a substrate; a plurality of light-emitting elements arranged two-dimensionally on the substrate, each having a plurality of first electrodes, an organic layer arranged on the plurality of first electrodes, and a second electrode covering the organic layer; a protective layer covering the plurality of light-emitting elements; a plurality of color filters provided on the protective layer; Equipped with a plurality of sub-pixels are formed corresponding to the plurality of light-emitting elements, a ring-shaped lens having a convex surface that is convex in a direction away from the substrate is provided at a periphery of the sub-pixel in a plan view of the sub-pixel, the ring-shaped lens being provided at a position that does not overlap with the color filter of an adjacent sub-pixel adjacent to the sub-pixel, The refractive index of the lens is higher than the refractive index of the outer portion of the lens that is in contact with the convex portion. Display device. (2) The lens is provided in the color filter so that the color filter is the outer portion. The display device according to (1) above. (3) a planarization layer is further formed between the protective layer and the color filter; The bottom surface of the lens is in contact with the planarization layer. The display device according to (2) above. (4) a planarization layer is further formed between the protective layer and the color filter; The lens is provided in the planarization layer so that the planarization layer is the outer portion. The display device according to (1) above. (5) a planarization layer is further formed between the protective layer and the color filter; The planarization layer includes a first planarization layer and a second planarization layer stacked on the first planarization layer and having a refractive index higher than that of the first planarization layer. the lens is provided on the first planarization layer; The outer portion is the second planarization layer. The display device according to (1) above. (6) A first substrate including a drive substrate, a plurality of light-emitting elements arranged two-dimensionally on the drive substrate, the light-emitting elements having a plurality of first electrodes, an organic layer arranged on the plurality of first electrodes, and a second electrode covering the organic layer, and a protective layer covering the plurality of light-emitting elements; a second substrate having a counter substrate disposed so as to face the drive substrate and a plurality of the color filters formed on the counter substrate; a sealing resin layer that bonds the protective layer of the first substrate and the color filter of the second substrate to each other; Equipped with a plurality of sub-pixels are formed corresponding to the plurality of light-emitting elements, a ring-shaped lens having a convex surface that is convex in a direction away from the first substrate is provided at a periphery of the sub-pixel in a plan view of the sub-pixel, the ring-shaped lens being provided at a position that does not overlap the color filter of an adjacent sub-pixel adjacent to the sub-pixel, The refractive index of the lens is higher than the refractive index of the outer portion of the lens that is in contact with the convex portion. Display device. (7) A first substrate including a drive substrate, a plurality of light-emitting elements arranged two-dimensionally on the drive substrate, the light-emitting elements having a plurality of first electrodes, an organic layer arranged on the plurality of first electrodes, and a second electrode covering the organic layer, and a protective layer covering the plurality of light-emitting elements; a second substrate having a counter substrate disposed so as to face the drive substrate and a plurality of the color filters formed on the counter substrate; a sealing resin layer that bonds the protective layer of the first substrate and the color filter of the second substrate to each other; Equipped with a plurality of sub-pixels are formed corresponding to the plurality of light-emitting elements, a ring-shaped lens having a convex surface that is convex in a direction away from the second substrate is provided at a peripheral portion of the sub-pixel in a position that avoids a position across the color filter of an adjacent sub-pixel adjacent to the sub-pixel in a plan view of the sub-pixel, The refractive index of the lens is higher than the refractive index of the outer portion of the lens that is in contact with the convex portion. Display device. (8) The plurality of first electrodes are formed in a state separated from each other according to the arrangement of the sub-pixels, an insulating layer is formed between adjacent first electrodes, the insulating layer has a plurality of openings; each of the openings is disposed above a respective one of the plurality of first electrodes; the lens is provided at a position that does not overlap with the opening in a plan view of the sub-pixel; The display device according to (1) above. (9) The lens is provided along a periphery of the opening in a plan view of the sub-pixel. The display device according to (8) above. (10) The lens has a semicircular, semielliptical, trapezoidal, or triangular cross-sectional shape. The display device according to any one of (1) to (9) above. (11) The lens is formed from a light-transmitting material. The display device according to any one of (1) to (10) above. (12) The lens is formed from a photosensitive resin material. The display device according to any one of (1) to (11) above. (13) A convex lens is further provided on the color filter. The display device according to any one of (1) to (6) and (8) to (12) above. (14) A display device according to any one of (1) to (13) above, electronic equipment. [Explanation of symbols]

[0105] 10:Display device 11: Drive board 11A: Circuit board 13: Light emitting element 14: Insulating layer 14A: Opening 15:Protective layer 15A: First protective layer 15B: Second protective layer 16: Flattening layer 16A: First planarization layer 16B: Second planarization layer 17: Color filter 19: Lens 19A: Convex part 20: Filled resin layer 21: Opposing substrate 24: Convex lens 25: Covering layer 26: Convex lens 27: Covering layer 30: First substrate 31: Second substrate 32: Sealing resin layer 37: Color filter 101: Subpixel 102: Periphery 130A: First electrode 130B:Organic layer 130C: Second electrode 190:Outer part 191: Bottom 310: Digital still camera 311: Camera body 312: Photographic lens unit 313: Grip part 314: Monitor 315: Electronic viewfinder 320: Head-mounted display 321:Display section 322: Ear hook 330: Television equipment 331: Video display screen section 332: Front panel 333: Filter glass

Claims

1. A substrate; a plurality of light-emitting elements arranged two-dimensionally on the substrate, each of which has a plurality of first electrodes, an organic layer arranged on the plurality of first electrodes, and a second electrode covering the organic layer; a protective layer covering the plurality of light-emitting elements; a plurality of color filters provided on the protective layer; a plurality of lenses disposed in the color filter; Equipped with a plurality of sub-pixels are formed corresponding to the plurality of light-emitting elements, the lens has a ring shape with a convex surface portion that is convex in a direction away from the substrate, and the lens is provided on a periphery of the sub-pixel in a plan view of the sub-pixel, The refractive index of the lens is higher than the refractive index of the color filter. Display device.

2. A substrate; a plurality of light-emitting elements arranged two-dimensionally on the substrate, each of which has a plurality of first electrodes, an organic layer arranged on the plurality of first electrodes, and a second electrode covering the organic layer; a protective layer covering the plurality of light-emitting elements; a plurality of color filters provided on the protective layer; a planarization layer provided between the protective layer and the color filter; a plurality of lenses disposed in the planarization layer; Equipped with a plurality of sub-pixels are formed corresponding to the plurality of light-emitting elements, the lens has a ring shape with a convex surface portion that is convex in a direction away from the substrate, and the lens is provided on a periphery of the sub-pixel in a plan view of the sub-pixel, the planarization layer includes a first planarization layer and a second planarization layer stacked on the first planarization layer and having a refractive index higher than that of the first planarization layer; the lens is provided on the first planarization layer; The refractive index of the lens is higher than the refractive index of the second planarization layer. Display device.

3. a planarization layer is further formed between the protective layer and the color filter; The bottom surface of the lens is in contact with the planarization layer. The display device according to claim 1 .

4. the plurality of first electrodes are formed in a state separated from one another according to the arrangement of the sub-pixels, an insulating layer is formed between adjacent first electrodes, the insulating layer has a plurality of openings; Each of the openings is disposed above a respective one of the plurality of first electrodes; the lens is provided at a position that does not overlap with the opening in a plan view of the sub-pixel; The display device according to claim 1 .

5. the lens is provided along a periphery of the opening in a plan view of the sub-pixel; The display device according to claim 4 .

6. The lens has a semicircular, semi-elliptical, trapezoidal or triangular cross-sectional shape. The display device according to claim 1 .

7. The lens is made of a light-transmitting material. The display device according to claim 1 .

8. The lens is formed from a photosensitive resin material. The display device according to claim 1 .

9. A convex lens is further provided on the color filter. The display device according to claim 1 .

10. A display device comprising the display device according to any one of claims 1 to 9. electronic equipment.

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