Display device and electronic apparatus

Abstract

Provided are a display device and an electronic apparatus capable of, for example, suppressing peeling of an adhesive layer from a layer disposed on the outermost surface of a base body bonded to a second substrate when the second substrate and the adhesive layer bonding the second substrate to the base body have deteriorated.　The display device comprises: a base body having a display region and including a first substrate, a light emitting element having a structure in which a first electrode, an organic layer, and a second electrode are laminated in this order on the first substrate, a protective layer covering the light emitting element, a color filter formed on the upper side of the protective layer, and a peripheral light-shielding part formed outside the display region; a second substrate facing a surface of the base body on which the light emitting element is formed; and an adhesive layer disposed between the base body and the second substrate and bonding the based body and the second substrate. When, in a plan view of the base body, a region inside an inner edge part of the peripheral light-shielding part is a first region and a region outside the inner edge part of the peripheral light-shielding part is a second region, the base body has, as color filters, a first color filter provided in the first region and a second color filter provided in the second region and forming the peripheral light-shielding part. On the surface of the base body, a surface uneven part is formed in a region in contact with the adhesive layer and including at least the second region in a plan view of the base body.

Description

Display devices and electronic devices

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

[0002] Display devices using light-emitting elements such as organic EL elements are used in various industries. Patent Document 1 proposes a display device having a structure in which a second substrate is bonded to a base body having light-emitting elements provided on a first substrate.

[0003] Japanese Patent Application Laid-Open No. 2006-120635

[0004] The display device disclosed in Patent Document 1 has room for improvement in terms of preventing the layer arranged on the outermost surface of the base adhered to the second substrate from peeling off from the adhesive layer when the second substrate and the adhesive layer adhering the second substrate to the base deteriorate, and in terms of preventing the layer arranged on the outermost surface of the base from peeling off from the base.

[0005] The present disclosure has been made in consideration of the above-mentioned points, and one of its objects is to provide a display device and an electronic device that can prevent peeling between the layer arranged on the outermost surface of the base adhered to the second substrate and the adhesive layer when the second substrate and the adhesive layer adhering the second substrate to the base deteriorate, and can prevent peeling of the layer arranged on the outermost surface of the base from the base.

[0006] The present disclosure relates to, for example, (1) a display device comprising: a base having a display area, a first substrate; a light-emitting element having a structure in which a first electrode, an organic layer, and a second electrode are laminated in this order on the first substrate; a protective layer covering the light-emitting element; a color filter formed on the protective layer; and a peripheral light-shielding portion formed outside the display area; a second substrate facing the surface of the base where the light-emitting element is formed; and an adhesive layer disposed between the base and the second substrate and bonding the base and the second substrate together, wherein, in a plan view of the base, a region inside from the inner edge of the peripheral light-shielding portion is defined as a first region and a region outside from the inner edge of the peripheral light-shielding portion is defined as a second region, the base has, as color filters, a first color filter provided in the first region and a second color filter provided in the second region and forming the peripheral light-shielding portion; and a surface irregularity portion is formed on the surface of the base in a region in contact with the adhesive layer in a plan view of the base and in at least the second region.

[0007] The present disclosure may be (2) an electronic device including the display device described in (1) above.

[0008] FIG. 1A is a plan view illustrating one example of a display device according to the first embodiment. FIG. 1B is a partially enlarged plan view illustrating a region XS1 surrounded by a dashed line in FIG. 1A . FIG. 1C is a partially enlarged plan view illustrating a region XS2 surrounded by a dashed line in FIG. 1A . FIG. 2 is a cross-sectional view illustrating one example of a display device according to the first embodiment. FIG. 3 is a plan view schematically illustrating one example of a display device according to a first modification of the first embodiment. FIG. 4 is a cross-sectional view schematically illustrating one example of a display device according to the first modification of the first embodiment. FIG. 5 is a plan view illustrating one example of a display device according to a second modification of the first embodiment. FIG. 6 is a cross-sectional view illustrating one example of a display device according to the second modification of the first embodiment. FIGS. 7A and 7B are plan views illustrating one example of a surface irregularity portion of a display device according to a third modification of the first embodiment. FIG. 8 is a plan view schematically illustrating one example of a display device according to a fourth modification of the first embodiment. FIG. 9 is a cross-sectional view illustrating one example of a display device according to the fourth modification of the first embodiment. FIG. 10 is a plan view schematically showing an example of a display device according to Modification 5 of the first embodiment. FIG. 11 is a cross-sectional view for explaining an example of a display device according to Modification 5 of the first embodiment. FIG. 12 is a plan view schematically showing an example of a display device according to Modification 6 of the first embodiment. FIG. 13 is a plan view for explaining an example of a display device according to Modification 6 of the first embodiment. FIG. 14 is a plan view schematically showing an example of a display device according to the second embodiment. FIG. 15 is a cross-sectional view schematically showing an example of a display device according to the second embodiment. FIG. 16 is a plan view schematically showing an example of a display device according to the third embodiment. FIG. 17 is a cross-sectional view schematically showing an example of a display device according to the third embodiment. FIG. 18 is a cross-sectional view schematically showing an example of a display device according to Modification 1 of the third embodiment. FIG. 19 is a plan view schematically showing an example of a display device according to Modification 3 of the third embodiment. FIG. 20 is a cross-sectional view schematically showing an example of a display device according to Modification 3 of the third embodiment. FIG. 21 is a plan view schematically illustrating an example of a display device according to the fourth embodiment.FIG. 22 is a cross-sectional view schematically showing an example of a display device according to the fourth embodiment. FIG. 23 is a cross-sectional view schematically showing an example of a display device according to the fifth embodiment. FIG. 24 is a cross-sectional view schematically showing an example of a display device according to the sixth embodiment. FIG. 25 is a cross-sectional view schematically showing an example of a display device according to Modification 1 of the sixth embodiment. FIG. 26 is a cross-sectional view schematically showing an example of a display device according to Modification 1 of the sixth embodiment. FIG. 27 is a cross-sectional view schematically showing an example of a display device according to Modification 2 of the sixth embodiment. FIG. 28 is a cross-sectional view schematically showing an example of a display device according to Modification 3 of the sixth embodiment. FIG. 29 is a cross-sectional view schematically showing an example of a display device according to the seventh embodiment. FIGS. 30A, 30B, and 30C are partial cross-sectional views for explaining an example of a display device according to the seventh embodiment. FIGS. 31A and 31B are diagrams for explaining an application example of the display device. FIG. 32 is a diagram for explaining an application example of the display device. FIG. 33 is a diagram for explaining an application example of the display device. Fig. 34 is a diagram for explaining an application example of the display device. Fig. 35 is a diagram for explaining an application example of the display device. Figs. 36A and 36B are diagrams for explaining an application example of the display device.

[0009] 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.

[0010] The description 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 example

[0011] The following description is a preferred example of the present disclosure, and the contents of the present disclosure are 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 contents of the present disclosure are not limited to these directions. In the examples of Figures 1A and 2, the Z axis direction is the up-down direction (the upper side is the +Z direction, the lower side is the -Z direction), the X axis direction is the front-to-back direction (the front side is the +X direction, 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, the left side is the -Y direction), and the description will be based on this. The same applies to Figures 3 to 30. The relative size and thickness ratios of each layer shown in Figure 1A and other figures are described for convenience and do not limit the actual size ratios. The same applies to Figure 1B and Figures 2 to 30.

[0012] [1 First Embodiment] [1-1 Configuration] An example of a display device according to an embodiment of the present disclosure is an organic electroluminescence (EL) display device. The display device according to the first embodiment will be described below using an example in which the display device is an organic EL display device (hereinafter simply referred to as "display device 10") as shown in FIGS. 1A, 1C, and 2. FIG. 1A is a plan view showing an example of the display device 10. FIG. 1C is a diagram for schematically explaining the layout of subpixels in a region XS2 of FIG. 1A. FIG. 2 is a cross-sectional view schematically showing a vertical cross section taken along line A-A of FIG. 1A.

[0013] (Display Area and Outer Area) The display device 10 has a display surface D, and a display area 10A and an outer area 10B are defined on the display surface D side. The display surface D refers to a surface defined as a surface through which light generated by the light-emitting elements 104 in the display device 10 is extracted to the outside. The display area 10A is a region in which pixels are arranged. The display area 10A is a region defined as a region from which light generated by the plurality of light-emitting elements 104 on the display surface D is emitted. The outer area 10B refers to a predetermined region defined as a region outside the outer periphery of the display area 10A. In the example of FIG. 1A , the display area 10A is formed as a rectangular region, and the outer area 10B is a region defined as a rectangular ring-shaped region outside the display area 10A. The outer edge of the display area 10A is located at the inner periphery of the outer area 10B, and the display area 10A and the outer area 10B are adjacent to each other. In the present disclosure, the direction away from the center of the display area 10A along the surface direction of the display area 10A is referred to as the outward direction, and the direction opposite to the outward direction is referred to as the inward direction. The direction from the display area 10A toward the outer area 10B is the outward direction.

[0014] In addition, when pads for connecting to an external device are provided on the base 110 of the display device 10 as described below, the outer region 10B is defined as the region outside the outer periphery of the display region 10A, excluding the region outside the region defined as the region for providing the pads (pad formation region 10C). In the display device 10 shown in the example of Figure 1, the region combining the outer region 10B and the display region 10A is the region where the base 110 and the second substrate 112 face each other, and therefore the outer region 10B is the region where the base 110 and the second substrate 112 face each other, excluding the display region 10A.

[0015] The following description will be given using an example in which the display device 10 displays using a top emission method. The top emission method refers to a method in which the light-emitting element 104 is disposed closer to the light-emitting surface than the first substrate 111. Therefore, in the display device 10, the first substrate 111 is located on the back side of the display device 10, and the direction from the first substrate 111 toward the light-emitting element 104 (described later) (the +Z direction) corresponds to the front side (top side) of the display device 10. In the display device 10, light generated from the light-emitting element 104 is directed in the +Z direction and emitted to the outside. In the following description, in each layer constituting the display device 10, the surface facing the display surface in the display area (display area 10A) 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). Note that this does not prohibit the display device 10 according to the present disclosure from being a bottom emission method. The display device 10 can also be applied to a bottom emission method. In the bottom emission system, light generated from the light emitting element 104 is directed in the −Z direction and emitted to the outside.

[0016] In this specification, when the surface of the base 110 is referred to, it refers to the upper surface (first surface) unless otherwise specified. This also applies to other components of the base 110 (for example, the first upper surface covering layer, the second upper surface covering layer, and the peripheral light-shielding portion, etc.).

[0017] (Types of Sub-Pixels) In the examples of Figures 1A, 1C, 2, etc., the display device 10 has pixels formed in a display region 10A, and the pixels are composed of a combination of subpixels. Furthermore, in the display device 10 shown in this example, three colors, red, green, and blue, are defined as multiple color types corresponding to emitted light colors, and three types of subpixels, subpixels 101R, 101G, and 101B, are provided. The subpixels 101R, 101G, and 101B are red, green, and blue subpixels, respectively, and display red, green, and blue, respectively. However, the example of Figure 1 is merely an example, and the display device 10 is not limited to a case where it has multiple subpixels corresponding to the three color types. Furthermore, the wavelengths of light corresponding to the red, green, and blue colors can be determined as wavelengths in the range of 610 nm to 650 nm (red wavelength band), 510 nm to 590 nm (green wavelength band), and 440 nm to 480 nm (blue wavelength band), respectively. Note that the number of color types of the sub-pixels is not limited to the three colors shown here, and may be two colors, four colors, or the like. Furthermore, the color types of the sub-pixels are not limited to red, green, and blue, and may be yellow, white, or the like.

[0018] The layout of the subpixels 101B, 101R, and 101G in the display device 10 is not particularly limited. However, in the example of FIG. 1, in a predetermined region constituting the display surface, the subpixels 101B, 101R, and 101G constituting one pixel are arranged in a delta shape, and each pixel is arranged two-dimensionally. Note that FIG. 1C is an example, and as will be described later, the delta shape refers to an arrangement in which the centers of the subpixels constituting one pixel are connected to form a triangle. In the present disclosure, the layout of the subpixels 101B, 101R, and 101G is not limited. The example of FIG. 1A is a diagram for explaining the display region 10A of the display device 10.

[0019] In the description of this specification, when the types of the sub-pixels 101R, 101G, and 101B are not particularly distinguished from one another, the sub-pixels 101R, 101G, and 101B are collectively referred to as the sub-pixel 101.

[0020] (Control of Light-Emitting States of Sub-Pixels) The display device 10 generally includes a control circuit (not shown), an H driver that drives the display surface in the horizontal direction, and a V driver (not shown) that drives (scans) the display surface in the vertical direction, and the control circuit controls the driving of the H driver and V driver. When a two-dimensional matrix is ​​assigned to each sub-pixel 101, the H driver and V driver control the light-emitting states of the sub-pixels 101 on a column-by-column and row-by-row basis, respectively.

[0021] As shown in FIGS. 1 and 2 , the display device 10 includes a base 110 having a first substrate 111 and a light-emitting element 104, a second substrate 112, and an adhesive layer 113 disposed between the base 110 and the second substrate 112. In the display device 10, a surface irregularity portion 30 is formed on the base 110. For ease of explanation, in FIG. 1 , the surface irregularity portion 30 is indicated by a hatched area surrounded by a dashed line. This also applies to FIGS. 3 , 5 , 8 , 10 , 14 , 16 , and 19 . Regarding hatching in plan views, in FIGS. 12 and 13 , the convex group 35 is indicated by a hatched area. In FIG. 21 , the groove group 45 is indicated by a hatched area.

[0022] (Surface Unevenness) On the surface of the substrate 110, the surface unevenness 30 is formed in a region of the surface of the substrate 110 that comes into contact with the adhesive layer 113 (the region to be adhered). The surface unevenness 30 has surface convex portions 31 that are formed in a convex shape. In the examples of FIGS. 1B and 2 , the surface unevenness 30 is composed of a combination of surface convex portions 31 and surface concave portions 32 that are formed in a concave shape. In this example, the surface unevenness 30 has a plurality of surface convex portions 31, and has surface concave portions 32 that are formed in a concave shape between adjacent surface convex portions 31. The surface unevenness 30 may have a structure that has a plurality of surface concave portions 32, and a surface convex portion 31 is formed between adjacent surface concave portions 32.

[0023] The layout of the surface unevenness portion 30 is determined by the formation state of the surface convex portions 31 and the surface concave portions 32. The surface convex portions 31 and the surface concave portions 32 are unit-shaped portions (unit-shaped portions) that constitute the surface unevenness portion 30. The surface unevenness portion 30 has a structure in which at least one type of unit-shaped portion is arranged in a predetermined layout. In the surface unevenness portion 30 of the example in FIG. 1B , the surface convex portions 31 are formed to have a delta-shaped layout similar to the layout of the subpixels 101. The portions between adjacent surface convex portions 31 are defined as surface concave portions 32. Note that the arrangement of the surface convex portions 31 and the surface concave portions 32 shown in FIG. 1B is an example and does not limit the formation state of the surface convex portions 31 and the surface concave portions 32.

[0024] (Formation Area of ​​Surface Unevenness) As shown in FIG. 2 , the surface unevenness 30 is formed in at least the second region AR2 in a plan view of the base 110. In a plan view of the base 110 (in the example of FIG. 2 , when the base 110 is viewed with the Z-axis direction (vertical direction) as the line of sight), the region inward from the inner edge 23A of the peripheral light-shielding portion 23 of the base 110 is referred to as the first region AR1, and the region outward from the inner edge 23A of the peripheral light-shielding portion 23 of the base 110 is referred to as the second region AR2. Therefore, as shown in FIG. 2 , the surface unevenness 30 is formed in at least a predetermined portion of the region outward from the inner edge 23A of the formation area of ​​the peripheral light-shielding portion 23, which is the second region AR2. In the example shown in FIG. 2 , the surface unevenness 30 is formed in a region including the region directly above the peripheral light-shielding portion 23. 2, the region of the second region AR2 where the protective layer 16 is formed is referred to as the first peripheral region SR1. The region of the second region AR2 excluding the first peripheral region SR1 (the region outside the first peripheral region SR1) is referred to as the second peripheral region SR2. The region of the second region AR2 outside the outer edge 23B of the peripheral light-shielding portion 23 is referred to as the outer peripheral region NR, as will be described in the sixth embodiment below. The region of the second region AR2 outside the region where the first top surface covering layer 28 is formed is referred to as the outer edge region ER.

[0025] The dimensions of the surface convex portions 31 and / or surface concave portions 32 constituting the surface unevenness portion 30 are preferably smaller than the width (length in the inner and outer directions) of the auxiliary electrode 26 described below and the width of the peripheral light-shielding portion 23. For example, in the surface unevenness portion 30, when the surface convex portions 31 have a hemispherical shape, the diameter of the surface convex portions 31 can be set to be approximately 6 μm or more and 10 μm or less.

[0026] The surface unevenness portion 30 may be formed based on processing of the surface (upper surface) of the base 110, or may be formed by forming an uneven structure in a layer below the surface of the base 110 (on the second surface side) and reflecting the uneven structure on the surface of the base 110. In the example of FIG. 2 , as will be described later, an unevenness portion (first unevenness portion 33) is formed in a layer (first upper surface coating layer 28) below the layer that forms the surface of the base 110, and an unevenness portion (second unevenness portion 34) based on the first unevenness portion 33 is formed as the surface unevenness portion 30 in a layer (second upper surface coating layer 29) that forms the surface of the base 110. Note that the example of FIG. 2 is merely an example and does not limit the structure of the surface unevenness portion 30.

[0027] The display device 10 according to the first embodiment may have a configuration in which the surface convex portions 31 and the surface concave portions 32 shown in FIG. 2 are interchanged. That is, the surface convex portions 31 may be replaced with surface concave portions 32, and the surface concave portions 32 may be replaced with surface convex portions 31 (not shown). The same applies to modified examples 1 to 6 described below, in which the surface convex portions 31 and the surface concave portions 32 may be interchanged. Note that when the surface convex portions 31 and the surface concave portions 32 are interchanged, the first concave-convex shape CS1 of the first concave-convex portion 33 and the second concave-convex shape CS2 of the second concave-convex portion 34 described below also have a configuration in which the concave shapes and convex shapes are interchanged.

[0028] (Adhesive Layer) The adhesive layer 113 contacts both the base 110 and the second substrate 112 and bonds the surface (first surface) of the base 110 on the display surface D side to the second substrate 112. The adhesive layer 113 can also function as a filling layer that fills the gap between the base 110 and the second substrate 112. The adhesive layer 113 contacts the surface irregularities 30. The adhesive layer 113 is generally formed of a resin material. Suitable resin materials for the adhesive layer 113 include organic resins such as acrylic resins, epoxy resins, urethane resins, and polyolefin resins, and transparent resin materials are preferably used. The resin for the adhesive layer 113 is preferably made of a material that is more flexible than the second substrate 112 and has a lower glass transition point.

[0029] (Second Substrate) The second substrate 112 serves as an opposing substrate to the first substrate 111. In the display device 10, the second substrate 112 is disposed opposite the surface of the base 110 on which the light-emitting element 104 is formed. The second substrate 112 can protect the display surface D of the base 110. The second substrate 112 may also be capable of performing an optical function. In the example of the first embodiment shown in FIG. 1 and other figures, a polarizing plate 114 is provided as the second substrate 112. Note that this is merely an example, and the second substrate 112 is bonded to the base 110 via an adhesive layer 113. There are no particular limitations on the second substrate 112 as long as it is capable of protecting the display surface D of the base 110. Examples of the second substrate include a glass substrate and a resin substrate. The second substrate may also include a film, such as a resin film or a polarizing film.

[0030] Next, an example of the layer structure of the substrate 110 and the contents of each layer will be described.

[0031] 2, the base 110 has a first substrate 111 and a light-emitting element 104. As will be described later, the light-emitting element 104 has a structure in which a first electrode 13, an organic layer 14, and a second electrode 15 are laminated in this order.

[0032] (First Substrate) The first substrate 111 has a substrate body 11 and an inorganic insulating layer 12 .

[0033] (Substrate Body) The substrate body 11 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, etc. Specifically, the substrate body 11 may be a glass substrate, a semiconductor substrate, a resin substrate, or the like.

[0034] As shown in FIG. 2 , the first substrate 111 has an inorganic insulating layer 12 provided on the substrate main body 11, and various circuits for driving the plurality of light-emitting elements 104 are provided within the inorganic insulating layer 12. Examples of the various circuits include a drive circuit for controlling the drive of the light-emitting elements 104 and a power supply circuit for supplying power to the plurality of light-emitting elements 104 (neither of which are shown). The inorganic insulating layer 12 prevents the various circuits from being exposed to the outside. Furthermore, the first substrate 111 is provided with wiring for connecting the light-emitting elements 104 and circuits provided on the substrate main body 11 to the first electrodes 13, etc. Examples of the wiring include a plurality of contact plugs.

[0035] (Inorganic Insulating Layer) The inorganic insulating layer 12 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.

[0036] (Light-Emitting Element) A plurality of light-emitting elements 104 are provided on the first surface of the inorganic insulating layer 12. In the examples shown in FIGS. 1A, 1C, 2, etc., the light-emitting elements 104 are organic electroluminescence elements (organic EL elements). The light-emitting elements 104 are provided within the display region 10A in a planar view of the base 110. The plurality of light-emitting elements 104 are light-emitting elements that emit light from their light-emitting surfaces (emitted light colors) in colors corresponding to the colors of the sub-pixels 101. For example, light-emitting elements 104R, 104G, and 104B are formed in the sub-pixels 101R, 101G, and 101B, respectively. The plurality of light-emitting elements 104 are arranged in a layout corresponding to the arrangement of the sub-pixels 101 of the respective color types. In this specification, when there is no particular distinction between the types of light-emitting elements 104R, 104G, and 104B, the term "light-emitting element 104" is used.

[0037] The light-emitting element 104 has a laminated structure in which a first electrode 13, an organic layer 14, and a second electrode 15 are laminated in this order from the first substrate 111 side in a direction from the second surface to the first surface (+Z direction).

[0038] (First Electrode) A plurality of first electrodes 13 are provided on the first surface side of the first substrate 111. In the example of Fig. 2, the first electrodes 13 are anode electrodes.

[0039] The first electrode 13 is composed of at least one layer of a metal layer or a metal oxide layer, and may be composed of a single layer film of a metal layer or a metal oxide layer, or a laminate film of a metal layer and a metal oxide layer.

[0040] 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 an aluminum alloy and a silver alloy. Specific examples of the aluminum alloy include AlNd and AlCu.

[0041] The metal oxide layer contains, 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).

[0042] 2 , the first electrodes 13 are electrically separated for each sub-pixel 101. That is, a plurality of first electrodes 13 are provided on the first surface side of the first substrate 111, and each first electrode 13 is provided for each sub-pixel 101.

[0043] In addition, it is preferable that an insulating layer be formed between adjacent first electrodes 13. In the examples of FIGS. 1C and 2, an inorganic insulating layer 12 is formed between adjacent first electrodes 13. In the examples of FIGS. 1C, 2, etc., the inorganic insulating layer 12 electrically separates each first electrode 13 into each light-emitting element 104 (i.e., each sub-pixel 101). As shown in FIG. 1C, an opening 12A is formed on the first surface side of the inorganic insulating layer 12, and the first surface of the first electrode 13 (the surface facing the second electrode 15) is exposed from the opening 12A of the inorganic insulating layer 12, and the portion of the first electrode 13 exposed from the opening 12A faces the organic layer 14 (described later) without the inorganic insulating layer 12 interposed therebetween. Note that the inorganic insulating layer 12 may be formed not only between adjacent first electrodes 13 but also on the edge of the first electrode 13. The edge of the first electrode 13 is defined as the portion from the outer periphery of the first electrode 13 to a predetermined position closer to the center of the first electrode 13. In this case as well, the inorganic insulating layer 12 has an opening 12A, and the first surface of the first electrode 13 is exposed through the opening 12A.

[0044] (Light-emitting element) In the display device 10, a plurality of light-emitting elements 104 are provided on the upper side of the first surface of the first substrate 111. In the example of Fig. 1C, the plurality of light-emitting elements 104 are formed as individual light-emitting elements 104R, 104G, and 104B corresponding to the individual sub-pixels 101R, 101G, and 101B. In this specification, the term "light-emitting element 104" is used when there is no particular distinction between the types of light-emitting elements 104R, 104G, and 104B. The plurality of light-emitting elements 104 are two-dimensionally arranged in a striped arrangement pattern.

[0045] (Organic Layer) The organic layer 14 is an organic light-emitting layer provided between the first electrode 13 and the second electrode 15. The organic layer 14 is provided as a layer common to the sub-pixels 101. In the example of FIG. 1C , the organic layer 14 is common to the sub-pixels 101R, 101G, and 101B, and is configured to be able to emit white light. However, this does not prohibit the emission color of the organic layer 14 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 14 may be, for example, any one of white, red, blue, and green.

[0046] The organic layer 14 has a configuration in which, for example, 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 13 toward the second electrode 15. An electron injection layer may be provided between the electron transport layer and the second electrode 15. The electron injection layer is intended to increase electron injection efficiency. Note that the configuration of the organic layer 14 is not limited to this, and layers other than the light-emitting layer may be provided as needed.

[0047] The hole injection layer is a buffer layer for increasing the efficiency of hole injection into the light-emitting layer and suppressing leakage. The hole transport layer is a buffer layer for increasing the efficiency of hole transport into the light-emitting layer. The electron transport layer is a buffer layer for increasing the efficiency of electron transport into the light-emitting layer.

[0048] The light-emitting layer generates light when electrons and holes are recombined under an applied electric field, and is an organic compound layer containing an organic light-emitting material.

[0049] (Second Electrode) A second electrode 15 is provided on the upper side of the organic layer 14. A portion of the second electrode 15 corresponding to the sub-pixel 101 (a portion corresponding to the light-emitting element 104) is provided so as to face the first electrode 13. The second electrode 15 is provided as an electrode common to the plurality of sub-pixels 101 (sub-pixels 101R, 101G, 101B). An electrode layer common to the plurality of sub-pixels 101 is formed as the second electrode 15. The second electrode 15 is a cathode electrode. The second electrode 15 is preferably a transparent electrode that is transparent to light generated in the organic layer 14. The transparent electrode referred to here includes an electrode formed of a transparent conductive layer and an electrode formed of a laminated structure having a transparent conductive layer and a semi-transmissive reflective layer.

[0050] The transparent conductive layer is preferably made of a transparent conductive material having good light transmittance and a small work function. The transparent conductive layer can be formed of, for example, a metal oxide. Specific examples of the material for the transparent conductive layer include a material containing 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).

[0051] The semi-transmissive reflective layer can be formed of, for example, a metal layer. Specifically, the material of the semi-transmissive reflective layer can be, for example, a material containing at least one metal element selected from the group consisting of magnesium (Mg), aluminum (Al), silver (Ag), gold (Au), and copper (Cu). The metal layer may contain at least one of the metal elements as a constituent element of an alloy. Specific examples of the alloy include an MgAg alloy and an AgPdCu alloy.

[0052] (Auxiliary Electrode) It is preferable that the display device 10 is provided with an auxiliary electrode 26 generally outside the display region 10A (in the outer region 10B). The auxiliary electrode 26 relays electrical connection between various circuits formed on the first substrate 111 side and the second electrode 15.

[0053] The material of the auxiliary electrode 26 is not particularly limited as long as it is a conductive material, and may be, for example, a metal, etc. As shown in Figure 2, the second electrode 15 is extended from the display region 10A to its outer side (outer region 10B) and connected to the auxiliary electrode 26, thereby achieving electrical connection between the second electrode 15 and the auxiliary electrode 26.

[0054] The auxiliary electrode 26 is formed in a ring shape so as to generally surround the periphery of the display region 10A in a plan view of the display region 10A. However, this is just an example, and the layout of the auxiliary electrode 26 is not limited to a ring shape. The auxiliary electrode 26 may be positioned generally directly below a peripheral light-shielding portion 23, which will be described later, or the entire auxiliary electrode 26 may be positioned at a position shifted from directly below the peripheral light-shielding portion 23.

[0055] (Protective Layer) In the display device 10, a protective layer 16 is formed so as to cover the formation surface (first surface) of the light emitting element 104. This makes the first surface of the light emitting element 104 less susceptible to exposure to the outside air, and suppresses moisture penetration into the light emitting element 104 from the external environment.

[0056] The protective layer 16 is formed of an insulating material. Examples of the insulating material include thermosetting resins. Other insulating materials include SiO, SiON, AlO, and TiO. In this case, examples of the protective layer 16 include a CVD film containing SiO, SiON, and the like, and an ALD film containing AlO, TiO, and SiO. The CVD film refers to a film formed using chemical vapor deposition (CVD). The ALD film refers to a film formed using atomic layer deposition (ALD). The protective layer 16 may be formed as a single layer or may have a structure in which multiple layers are stacked. In the example of FIG. 2, the protective layer 16 has a stacked structure of a first protective layer 16A and a second protective layer 16B. The first protective layer 16A and the second protective layer 16B may be layers formed from a predetermined insulating material, or the first protective layer 16A and the second protective layer 16B may be formed from a CVD film and an ALD film, respectively.

[0057] The protective layer 16 covers the upper surface (first surface) of the second electrode 15 and also covers the auxiliary electrode 26. In the example of Fig. 2, the first protective layer 16A and the second protective layer 16B are each formed in the display region 10A and are further formed over a wide area up to a part of the outer region 10B. In the example of Fig. 2, the first protective layer 16A and the second protective layer 16B are formed outward (in the direction away from the display region 10A) from a peripheral light-shielding portion 23 described later.

[0058] 2, in the plan view of the base 110, the outer edge of the peripheral light-shielding portion 23 and the outer edge of the auxiliary electrode 26 are located in the first peripheral region SR1. As described above, the first peripheral region SR1 is the region (second region AR2) extending from the inner edge of the peripheral light-shielding portion 23 to the outer side, where the protective layer 16 is formed.

[0059] (Planarization Layer) A planarization layer 17 is formed on the upper side of the protective layer 16. The planarization layer 17 is formed so as to cover the upper surface side (first surface) of the second protective layer 16B.

[0060] The planarization layer 17 may be a layer formed of an inorganic material or a layer formed of an organic material. Examples of inorganic materials include the same materials as those of the protective layer 16. Examples of organic materials include resin materials. The planarization layer 17 can improve the planarization of the surface (upper surface) that serves as a base for forming the color filter 18 described below. Furthermore, the provision of the planarization layer 17, together with the protective layer 16, can make the first surface of the light-emitting element 104 less susceptible to exposure to the outside air, thereby suppressing the penetration of moisture from the external environment into the light-emitting element 104.

[0061] (Color Filter) In the display device 10, a color filter 18 is provided on the upper side of the protective layer 16. In the example of Fig. 2, the color filter 18 is provided on the first surface side (upper side, +Z direction side) of the planarization layer 17 formed on the protective layer 16. The color filter 18 is preferably configured to select light of a predetermined color type from the visible light generated by the light emitting element 104.

[0062] In the display device 10, the first surface side (upper side, +Z direction side) of the planarization layer 17 is provided with the first color filter 19 and the second color filter 20 as the color filter 18 as described above. An example of the color filter 18 is an on-chip color filter (OCCF). An example of the material of the color filter 18 is an organic material for both the first color filter 19 and the second color filter 20.

[0063] (First Color Filter) The first color filter 19 is provided in a region (first region AR1) inward from an inner edge portion 23A of a peripheral light-shielding portion 23 (described later) in a plan view of the base 110. That is, the first color filter 19 is preferably formed generally within the display region 10A. The first color filter 19 is provided according to the color type of the sub-pixel 101. In the examples of FIGS. 1C and 2, for example, the first color filter 19 may include a red color filter (red filter 19R), a green color filter (green filter 19G), and a blue color filter (blue filter 19B). The filters corresponding to the color types of the sub-pixels 101 are provided at positions corresponding to the color types of the respective sub-pixels 101. Specifically, the red filter 19R, the green filter 19G, and the blue filter 19B are provided in the sub-pixels 101R, 101G, and 101B, respectively. By providing the first color filter 19 in the display device 10, light corresponding to the colors of the sub-pixels 101R, 101G, and 101B can be effectively extracted to the outside.

[0064] (Second Color Filter) The second color filter 20 is formed outside the first color filter 19, which is the outermost one. In FIG. 2, the second color filter 20 is formed generally in the outer region 10B. The second color filter 20 is formed so as to cover the upper side (+Z direction side) of the auxiliary electrode 26. The second color filter 20 becomes the peripheral light-shielding portion 23. In the example of FIG. 2, the second color filter 20 has a structure in which a red color filter (red filter 20R) and a blue color filter (blue filter 20B) are stacked in the thickness direction (Z-axis direction) of the base 110. The red filter 20R may be formed simultaneously with the red filter 19R using the same material. The blue filter 20B may be formed simultaneously and integrally with the blue filter 19B using the same material. In the example of FIG. 2, the second color filter 20 may have a structure in which a red color filter (red filter 20R) and a blue color filter (blue filter 20B) are stacked together, and may further have a green color filter (green filter 20G).

[0065] The red filter 20R can be, for example, a filter that easily transmits light in the red wavelength band of visible light and easily absorbs light in other wavelength bands. The blue filter 20B can be, for example, a filter that easily transmits light in the blue wavelength band of visible light and easily absorbs light in other wavelength bands. A structure in which the red filter 20R and the blue filter 20B are stacked can block light over a wide range of wavelength bands. Therefore, the second color filter 20 generally suppresses the transmission of light generated by the light-emitting elements 104 in the display region 10A that travels diagonally from the outer region 10B to the outside. In this way, the second color filter 20 exerts an effect of suppressing light leakage. Light traveling from the outside of the display device 10 toward the first substrate 111 is blocked by the second color filter 20, thereby suppressing the intrusion of external light.

[0066] In this way, the second color filter 20 has light-blocking properties when the red filter 20R and the blue filter 20B are stacked, and the stacked structure of the red filter 20R and the blue filter 20B functions as a light-blocking filter. In the example shown in Figure 2, the innermost edge of the second color filter 20 is in contact with the outermost edge of the first color filter 19.

[0067] (Peripheral Light-Shielding Portion) In the display device 10, a peripheral light-shielding portion 23 is provided on the first surface side of the planarization layer 17. The peripheral light-shielding portion 23 is configured to suppress the emission of light generated by the light-emitting elements from the display surface side. The peripheral light-shielding portion 23 is a portion that has the function of restricting the passage of visible light at least more than the first color filter 19, and is not limited to a portion that has the function of completely blocking the propagation of light. In the example shown in FIG. 2, the peripheral light-shielding portion 23 is configured with the second color filter 20 as described above. In this example, the inner edge portion 23A of the peripheral light-shielding portion 23 is located at the boundary between the outer region 10B and the display region 10A. The peripheral light-shielding portion 23 is provided in the outer region 10B in a planar view of the base 110. The provision of the peripheral light-shielding portion 23 can suppress leakage of light from the outer edge of the display region 10A into the outer region 10B due to reflection or diffusion of light generated by the light-emitting elements 104 in the display region 10A. In addition, the provision of the peripheral shading portion 23 prevents the area of ​​the outer region 10B from shining from the outer edge of the display region 10A due to light reflected by the highly reflective auxiliary electrode 26, making it easier to recognize the display on the display surface D.

[0068] (Top Surface Covering Layer) In a plan view of the base 110, the display device 10 has a top surface covering layer at least above the first color filter 19 and the peripheral light-shielding portion 23. The display device 10 also has a first top surface covering layer 28 and a second top surface covering layer 29 as top surface covering layers.

[0069] (First Top Surface Covering Layer) The first top surface covering layer 28 covers the first color filter 19 and the peripheral light-shielding portion 23 in a plan view of the base 110. In the example of Fig. 2, the first top surface covering layer 28 covers the outer end surface of the protective layer 16 and the outer end surface of the planarizing layer 17, and is formed up to a predetermined position in a region (second peripheral region SR2) outside the outer end of the protective layer 16.

[0070] The first upper surface coating layer 28 is preferably an organic coating layer. The material of the organic coating layer can be an organic resin. Examples of organic resins for forming the organic coating layer include the resin for forming the planarizing layer 17 described above and the resin for forming the lens 22 shown in the second embodiment described below. The organic coating layer can be formed by curing a coating film in which a predetermined organic resin is applied so as to cover the surfaces of the first color filter 19 and the peripheral light-shielding portion 23.

[0071] (First Unevenness Portion) A first unevenness portion 33 is formed on the surface (first surface) of the first top surface coating layer 28. In the first top surface coating layer 28, the first unevenness portion 33 is formed on the surface facing the second top surface coating layer 29 in a plan view of the base 110, and in the second region AR2. In the example shown in FIG. 2 , the first unevenness portion 33 is formed in both the first peripheral region SR1 and the second peripheral region SR2 of the second region AR2. However, this is just one example, and the first unevenness portion 33 may also be formed in either the first peripheral region SR1 or the second peripheral region SR2 of the second region AR2.

[0072] The first uneven portion 33 has a first uneven shape CS1. The first uneven shape CS1 is a shape determined according to various conditions, such as the layout of the first uneven portion 33 and the dimensions of the three-dimensional structure that constitutes the first uneven portion 33. The first uneven portion 33 is formed by a combination of first convex portions 33A as portions having a convex shape and first concave portions 33B as portions having a concave shape. The layout of the first uneven portion 33 refers to the arrangement of the first convex portions 33A and the first concave portions 33B. The dimensions of the three-dimensional structure that constitutes the first uneven portion 33 refer to the dimensions of the first convex portions 33A and the first concave portions 33B.

[0073] The method for forming the first uneven portion 33 is not particularly limited. Specifically, the first uneven portion 33 can be formed, for example, by applying a method for forming the lenses 22, which will be described later, to the surface of the organic coating layer that will become the first upper surface coating layer 28. An example of a method for forming the lenses 22 is an OCL (On Chip Lens) formation method. Examples of the OCL formation method include a melting method and an etch-back method.

[0074] (Second Top Surface Coating Layer) The second top surface coating layer 29 forms the surface of the base 110 and is a layer that comes into contact with the adhesive layer 113. The second top surface coating layer 29 is formed so as to cover the surface (first surface) of the first top surface coating layer 28. Furthermore, as shown in the example of Figure 2, from the viewpoint of suppressing the intrusion of moisture from the outside, the second top surface coating layer 29 is preferably formed so as to cover the outer end surface of the first top surface coating layer 28. When the region of the second region AR2 that is outside the region where the first top surface coating layer 28 is formed is defined as the outer edge region ER, the second top surface coating layer 29 extends to the outer edge region ER.

[0075] The second upper surface coating layer 29 is preferably an inorganic coating layer. Examples of the material for the inorganic coating layer include inorganic materials. Examples of the inorganic material include inorganic insulating materials among the insulating materials for forming the protective layer 16 described above. Examples of inorganic insulating materials include SiO, SiON, AlO, and TiO.

[0076] The method for forming the second upper surface coating layer 29 is not particularly limited, and any method can be used that is applicable as a method for forming an inorganic coating layer that will become the second upper surface coating layer 29. The method for forming the inorganic coating layer can be a method for forming the protective layer 16, such as a chemical vapor deposition method (CVD method).

[0077] In the second upper surface coating layer 29, a second uneven portion 34 is formed on the surface (first surface) of the second upper surface coating layer 29 facing the adhesive layer 113 in a plan view of the base 110, and also in the second region AR2. In the example shown in FIG. 2 , the second uneven portion 34 is formed in the same region as the first uneven portion 33, i.e., in both the first peripheral region SR1 and the second peripheral region SR2 of the second region AR2. However, this is just one example, and the second uneven portion 34 may also be formed in either the first peripheral region SR1 or the second peripheral region SR2 of the second region AR2. The second uneven portion 34 is formed by a combination of second convex portions 34A as portions having a convex shape and second concave portions 34B as portions having a concave shape.

[0078] The second uneven portion 34 has a second uneven shape CS2. The second uneven shape CS2 is a shape based on the first uneven shape CS1. When the second upper surface coating layer 29 is formed to cover the first uneven portion 33, the second upper surface coating layer 29 is formed so that an uneven shape reflecting the first uneven shape CS1 of the first uneven portion 33 appears directly above the first uneven portion 33 on the surface (upper surface) of the second upper surface coating layer 29. In this case, the uneven shape that appears on the surface (upper surface) of the second upper surface coating layer 29 based on the first uneven shape CS1 of the first uneven portion 33 becomes the second uneven shape CS2. Furthermore, the portion of the second upper surface coating layer 29 that forms the second uneven shape CS2 becomes the second uneven portion 34.

[0079] The second concave-convex shape CS2 is specified by the layout of the second concave-convex portion 34 and the dimensions of the three-dimensional structure that constitutes the second concave-convex portion 34.

[0080] The layout of the second uneven portion 34 refers to the arrangement of the second convex portions 34A and the second concave portions 34B. The dimensions of the three-dimensional structure constituting the second uneven portion 34 refer to the dimensions of the second convex portions 34A and the dimensions of the second concave portions 34B.

[0081] In the display device 10 according to the first embodiment, the surface unevenness portion 30 of the base 110 is formed of a second unevenness portion 34 .

[0082] (Pads) Pads 25 (electrode pads) are preferably provided in the pad formation region 10C of the first substrate 111. The pads 25 can be connection terminals for electrically connecting the display device 10 to external devices, etc. The pads 25 may be formed from the same material as the first electrodes 13. For example, the pads 25 may be electrically connected to connection terminals of an FPC (flexible circuit board) (not shown). The connection structure between the pads 25 and the connection terminals of the FPC can be, for example, a connection structure via an anisotropic conductive film (ACF) or the like.

[0083] [1-2 Actions and Effects] When a display device has a structure in which a second substrate is bonded to a base having a first substrate and light-emitting elements with an adhesive layer, if the adhesive layer or the second substrate is distorted or deformed due to deterioration of the adhesive layer or the second substrate, there has been a problem in that delamination occurs between the adhesive layer and the surface of the base, or the layer forming the surface of the base follows the adhesive layer and peels off from the base.

[0084] In conventional display devices, the substrate is provided with light-emitting elements arranged for each subpixel and auxiliary electrodes that support the current-carrying state of the light-emitting elements. A protective layer or the like is provided to protect the light-emitting elements and auxiliary electrodes from moisture and the like. Therefore, in conventional display devices, the surface of the substrate is made as flat as possible by providing a protective layer or the like, or, if the surface of the substrate is inclined, a relatively gentle inclination is formed. For this reason, for example, when distortion occurs in the second substrate, the adhesive layer follows the distortion, and as a result of the distortion of the adhesive layer, there is a problem that peeling between the substrate and the adhesive layer is likely to occur. Peeling between the substrate and the adhesive layer is likely to occur near the edges of the adhesive layer, and there is a particular need to prevent peeling between the substrate and the adhesive layer near the edges of the adhesive layer.

[0085] In the display device 10 according to the first embodiment, the surface unevenness 30 is formed on the base 110, which increases the contact area between the adhesive layer 113 and the surface of the base 110. Furthermore, because the surface unevenness 30 is formed in the second region AR2, the increase in contact area is particularly likely to be realized in the outer region 10B. Therefore, in the display device 10 according to the first embodiment, it is possible to suppress peeling between the adhesive layer 113 and the base 110 in the outer region 10B, where peeling is likely to begin.

[0086] [1-3 Modifications] (Modification 1) In the display device 10 according to the first embodiment, as shown in FIGS. 3 and 4, the surface irregularities 30 may be formed in the first peripheral region SR1, and the surface irregularities may be omitted in the second peripheral region SR2. This configuration is referred to as Modification 1 of the first embodiment. FIGS. 3 and 4 are a plan view and a cross-sectional view, respectively, schematically illustrating an example of a display device 10 according to Modification 1 of the first embodiment. FIG. 4 is a cross-sectional view schematically illustrating a longitudinal section taken along line B-B in FIG. 3. The display device 10 according to Modification 1 of the first embodiment can be realized by configuring the display device 10 according to the first embodiment, except that the first irregularities 33 are formed only in the first peripheral region SR1 and the second irregularities 34 are formed only in the first peripheral region SR1. However, from the viewpoint of increasing the adhesion area between the base 110 and the adhesive layer 113, it is more preferable that the surface irregularities 30 be formed in both the first peripheral region and the second peripheral region. This also applies to the following modified example 2.

[0087] (Variation 2) In the display device 10 according to the first embodiment, as shown in FIGS. 5 and 6 , the surface irregularities 30 may be formed in the second peripheral region SR2, and the formation of the surface irregularities 30 in the first peripheral region SR1 may be omitted. This configuration is referred to as Variation 2 of the first embodiment. FIGS. 5 and 6 are a plan view and a cross-sectional view, respectively, schematically illustrating an example of a display device 10 according to Variation 2 of the first embodiment. FIG. 6 is a cross-sectional view schematically illustrating a vertical cross section taken along line CC in FIG. 5 . The display device 10 according to Variation 2 of the first embodiment can be realized by configuring it in the same way as the display device 10 according to the first embodiment described above, except that the first irregularities 33 are formed only in the second peripheral region SR2, and the second irregularities 34 are formed only in the second peripheral region SR2.

[0088] (Variation 3) In the display device 10 according to the first embodiment, the layout of the surface irregularity portion 30 is not limited to the case where the surface protrusions 31 have a curved contour shape, such as a circular shape, in a plan view of the base 110, as shown in the example of FIG. 1B. For example, as shown in FIGS. 7A and 7B, the surface protrusions 31 may have a polygonal shape, such as a strip shape or a rectangle shape. This form is referred to as Variation 3 of the first embodiment. FIGS. 7A and 7B are a plan view and a cross-sectional view schematically illustrating an example of the layout of the surface irregularity portion 30 in the display device 10 according to Variation 3 of the first embodiment. FIGS. 7A and 7B show views similar to FIG. 1B in Variation 3 of the first embodiment.

[0089] In the example shown in Figure 7A, the front surface convex portions 31 are formed in a rectangular shape, and the sizes of the respective front surface convex portions 31 are uniform. The layout of the front surface convex portions 31 is arranged in a stripe pattern from the peripheral light-shielding portion 23 outward so that the centers of adjacent front surface convex portions 31 are aligned in a straight line. However, this is just one example. Also, as shown in Figure 7B, there may be multiple sizes of the front surface convex portions 31. In both Figures 7A and 7B, the portions between adjacent front surface convex portions 31 form front surface concave portions 32.

[0090] (Variation 4) As shown in the examples of FIGS. 8 and 9 , the display device 10 according to the first embodiment may have a plurality of unit shaped portions, at least one of the surface convex portions and the surface concave portions, that form the surface irregularity portion 30, and at least one type of unit shaped portion may be formed concentrically at intervals in the outward direction of the peripheral light-shielding portion 23 in an area (second area AR2) outside the peripheral light-shielding portion 23. This configuration is referred to as Variation 4 of the first embodiment. FIG. 8 is a plan view schematically illustrating an example of the display device 10 according to Variation 4 of the first embodiment. FIG. 9 is a cross-sectional view schematically illustrating an example of the display device 10 according to Variation 4 of the first embodiment. FIG. 9 is a cross-sectional view schematically illustrating the state of the vertical cross section taken along line D-D in FIG. 8 . 8 and 9 , the surface convex portions 31 of the surface unevenness portion 30 have a rectangular ring shape in a plan view of the base 110, and are arranged at intervals in a direction away from the inner edge of the peripheral light-shielding portion 23. In this case, the space between adjacent surface convex portions 31 forms a surface concave portion 32.

[0091] (Variation 5) In the display device 10 according to the first embodiment, as shown in the examples of FIGS. 10 and 11 , at least one of the surface convex portions 31 and the surface concave portions 32 forming the surface unevenness portion 30 may be alternately arranged at intervals in a region (second region AR2) outside the peripheral light-shielding portion 23 in a direction along the inner edge of the peripheral light-shielding portion 23 (a direction along the boundary between the first region and the second region). This configuration is referred to as Variation 5 of the first embodiment. FIG. 10 is a plan view schematically illustrating an example of the display device 10 according to Variation 5 of the first embodiment. FIG. 11 is a cross-sectional view schematically illustrating an example of the display device 10 according to Variation 5 of the first embodiment. FIG. 11 is also a cross-sectional view schematically illustrating a longitudinal section taken along line E-E in FIG. 10 . 10 and 11 , the surface convex portions 31 of the surface unevenness portion 30 have a rectangular outline shape in a plan view of the base 110, and are arranged at intervals in a direction along the inner edge of the peripheral light-shielding portion 23. In this case, the surface concave portions 32 are formed between adjacent surface convex portions 31. Therefore, in this example, the surface unevenness portion 30 is formed so that the surface convex portions 31 and the surface concave portions 32 are arranged alternately.

[0092] (Variation 6) As shown in the examples of FIGS. 12 and 13 , the display device 10 according to the first embodiment may include a plurality of unit shape portions, at least one of the surface convex portions 31 and the surface concave portions 32, and a plurality of unit shape groups each including a plurality of unit shape portions. In a plan view of the base 110, at least one type of unit shape group may be concentrically arranged. This configuration is referred to as Variation 6 of the first embodiment. FIGS. 12 and 13 are plan views schematically illustrating an example of a display device 10 according to Variation 6 of the first embodiment. In the example of FIG. 12 , a convex group 35 including a plurality of surface convex portions 31 is formed in a rectangular ring shape, as shown in Variation 4 of the first embodiment described above. A plurality of convex groups 35 are arranged concentrically at intervals in the outward direction of the peripheral light-shielding portion 23 in a region (second region AR2) extending outward from the inner edge of the peripheral light-shielding portion 23. In the example of Figure 13, a convex group 35 consisting of multiple surface convex portions 31 is formed in a rectangular shape, as shown in variant example 5 of the first embodiment described above, and multiple convex groups are arranged at intervals in a direction along the inner edge of the peripheral shading portion 23.

[0093] [2 Second Embodiment] [2-1 Configuration] In the display device 10 according to the second embodiment, as shown in FIGS. 14 and 15 , the first uneven portion 33 of the first upper surface covering layer 28 and the second uneven portion 34 of the second upper surface covering layer 29 are formed in the second region AR2 and the first region AR1, respectively, and the surface uneven portion 30 is also formed in the first region AR1 and the second region AR2. Except for these configurations, the display device according to the second embodiment is similar to the first embodiment. Therefore, the second embodiment is similar to the first embodiment in other configurations except for the configurations of the first upper surface covering layer 28 and the second upper surface covering layer 29. FIG. 14 is a plan view schematically illustrating an example of a display device according to the second embodiment. FIG. 15 is a cross-sectional view schematically illustrating an example of a display device according to the second embodiment. Furthermore, FIG. 15 is a cross-sectional view schematically illustrating a vertical cross section taken along line F-F in FIG. 14 . In the description of the second embodiment, detailed description of the same configuration as the first embodiment will be omitted.

[0094] (First upper surface coating layer) In the display device according to the second embodiment, the first upper surface coating layer 28 is an organic coating layer, and the first uneven portion 33 of the first upper surface coating layer 28 is formed in the first region AR1 and the second region AR2.

[0095] (Lens) It is preferable that the first upper surface covering layer 28 has a lens 22 formed in the first region AR1, and it is preferable that the lens 22 also serves as at least a part of the first concave-convex portion 33.

[0096] In the first region AR1, the lenses 22 are provided on the surface (first surface) of the first upper surface covering layer 28 in a layout corresponding to each sub-pixel 101.

[0097] The shape of the lens 22 in the first upper surface covering layer 28 is not particularly limited. An example of the lens 22 is a lens formed in a convex shape having a curved surface that is convexly curved on the first surface side (a so-called convex lens). The lens 22 is preferably an on-chip lens (OCL).

[0098] The OCL can be formed by a melting method, an etch-back method, a combination of the melting method and the etch-back method, or the like. Specifically, for example, an organic resin for forming the first top surface coating layer 28 is prepared, and an organic material layer is formed by curing a coating film of the organic resin by spin coating or the like. Then, a photolithography method or an etching method is applied to the organic material layer, thereby imparting a three-dimensional shape for forming the lens 22 to the surface (first surface) of the organic material layer. The three-dimensional shape for the lens 22 is formed at least in the display region 10A and is formed according to the layout of the subpixels 101. This results in a state in which the three-dimensional shape for the lens 22 is imparted to the first region AR1 of the first top surface coating layer 28. The three-dimensional shape corresponding to the lens 22 becomes the first convex portion 33A constituting the first uneven portion 33 in the first top surface coating layer 28. In other words, the lens 22 also serves as at least a part of the first uneven portion 33.

[0099] As described in the first embodiment, the first top surface coating layer 28 has a first uneven portion 33 formed in the second region AR2. From the viewpoint of preventing an increase in the number of manufacturing steps, it is preferable to perform the process of forming the first uneven portion 33 in the second region AR2 (i.e., the process of imparting a three-dimensional shape to the second region AR2) when performing the process of imparting a three-dimensional shape that will become the lens 22 to the first region AR1. This can be achieved by applying the method of forming an OCL in both the first region AR1 and the second region AR2 on the surface of the organic material layer described above. This also allows the three-dimensional shape that will become the lens 22 to be formed in both the first region AR1 and the second region AR2 of the first top surface coating layer 28.

[0100] As described in the first embodiment, the first uneven portion 33 is composed of a combination of a first convex portion 33A having a convex shape and a first concave portion 33B having a concave shape. In the example shown in FIGS. 14 and 15 , in the first region AR1, the lenses 22 also serve as the first convex portions 33A constituting the first uneven portion 3. The portions between adjacent lenses 22 also serve as the first concave portions 33B. Furthermore, since a three-dimensional shape that becomes the lens 22 is also formed in the second region AR2, the lens 22 forms the first convex portion 33A in the second region AR2 and also serves as at least a portion of the first uneven portion 33 in the second region AR2 (also serving as the first convex portion 33A). However, FIGS. 14 and 15 are merely examples, and the three-dimensional shape formed in the second region AR2 may be a shape different from that of the lens 22. That is, the first convex portion 33A in the second region AR2 and the first convex portion 33A in the first region AR1 may have different shapes. Also, even if the three-dimensional shape formed in the second region AR2 is a shape that becomes a lens, the dimensions of the three-dimensional shape may be the same as or different from the dimensions of the lens formed in the first region AR1.

[0101] (Second Upper Surface Coating Layer) In the display device 10 according to the second embodiment, the second upper surface coating layer 29 is an inorganic coating layer, and a second uneven portion 34 having a second uneven shape CS2 is formed in the first region AR1 and the second region AR2 of the second upper surface coating layer 29. The second uneven shape CS2 is a shape based on the first uneven shape CS1.

[0102] When the second top surface coating layer 29 coats the first top surface coating layer 28, an uneven shape is formed on the surface (first surface) of the second top surface coating layer 29 in a shape that follows the surface shape of the first top surface coating layer 28. That is, the second top surface coating layer 29 is formed so that an uneven shape that reflects the first uneven shape CS1 of the first uneven portion 33 formed in the first region AR1 and the second region AR2 appears directly above the first uneven portion 33 on the surface (upper surface) of the second top surface coating layer 29. Therefore, a second uneven portion 34 having the second uneven shape CS2 is formed in the first region AR1 and the second region AR2 of the second top surface coating layer 29. And, because the second top surface coating layer 29 forms the surface of the base 110, the surface uneven portion 30 of the base 110 is composed of the second uneven portion 34.

[0103] [2-2 Actions and Effects] According to the display device 10 of the second embodiment, the same effects as those of the first embodiment can be obtained.

[0104] In the display device 10 according to the second embodiment, when the lenses 22 are formed in the first region AR1 in the first upper surface covering layer 28, the first uneven portion 33 can be formed in the first region AR1 and the second region AR2, and the lenses 22 can also serve as part of the first uneven portion 33. In this case, the first uneven portion 33 can be formed in the first region AR1 and the second region AR2 by imparting a three-dimensional shape corresponding to the lenses 22 to the second region AR2 in conjunction with the process of forming the lenses 22 in the first region AR1. This eliminates the need to separately perform the process of forming the first uneven portion 33 in the second region AR2. As a result, the display device according to the second embodiment can prevent an increase in the number of manufacturing processes.

[0105] [3 Third Embodiment] [3-1 Configuration] In a display device 10 according to the third embodiment, as shown in FIGS. 16 and 17 , the peripheral light-shielding portion 23 has a third uneven portion 37 having a third uneven shape CS3 on the surface facing the first top surface covering layer 28, and the first uneven shape CS1 of the first uneven portion 33 is shaped based on the third uneven shape CS3 of the third uneven portion 37. Apart from these configurations, the display device 10 according to the third embodiment is similar to the first embodiment. Therefore, the configuration of the third embodiment is similar to the first embodiment, except for the configuration of the peripheral light-shielding portion and the first uneven portion of the first top surface covering layer. FIG. 16 is a plan view schematically illustrating an example of a display device according to the third embodiment. FIG. 17 is a cross-sectional view schematically illustrating a vertical cross section taken along line G-G in FIG. 16 . In the description of the third embodiment, detailed description of the same configuration as in the first embodiment will be omitted.

[0106] (Peripheral Light-Shielding Portion) The peripheral light-shielding portion 23 is composed of the second color filter 20. In the example of Figures 16 and 17, the second color filter 20 in the peripheral light-shielding portion 23 has a layered structure in which a blue filter 20B is layered on a red filter 20R, and further has a structure in which a green filter 20G is formed in a predetermined layout on top of the layered structure (on the surface of the blue filter 20B). The material of the green filter 20G can be the same as the material of the green filter 19G used in the first color filter 19.

[0107] (Third uneven portion) A third uneven portion 37 is formed on the surface (first surface) of the peripheral light-shielding portion 23. In the peripheral light-shielding portion 23, the third uneven portion 37 is formed on the surface facing the first upper surface coating layer 28 in a plan view of the base 110.

[0108] The third uneven portion 37 has a third uneven shape CS3. The third uneven shape CS3 is a shape determined according to various conditions, such as the layout of the third uneven portion 37 and the dimensions of the three-dimensional structure that constitutes the third uneven portion 37. The third uneven portion 37 is formed by a combination of third convex portions 37A as portions having a convex shape and third concave portions 37B as portions having a concave shape. The layout of the third uneven portion 37 refers to the arrangement of the third convex portions 37A and the third concave portions 37B. The dimensions of the three-dimensional structure that constitutes the third uneven portion 37 refer to the dimensions of the third convex portions 37A and the third concave portions 37B.

[0109] The third uneven shape CS3 is determined as an uneven shape based on the structure of the second color filter 20. The peripheral light-shielding portion 23 shown in the examples of FIGS. 16 and 17 has portions where the green filter 20G is formed and portions where the green filter 20G is not formed, and the third uneven shape CS3 is a shape determined by a combination of such portions where the green filter 20G is formed and portions where the green filter 20G is not formed. Note that in the third uneven portion 37, the portions where the green filter 20G is formed form third convex portions 37A, and third concave portions 37B are formed between adjacent portions where the green filter 20G is formed. In the examples of FIGS. 16 and 17, the third concave portions 37B are formed by portions surrounded by the side surfaces of the green filters 20G and the portions where the green filters 20G are not formed (exposed portions of the blue filters 20B in FIG. 16). 17, the third uneven portion 37 is formed by forming the green filter 20G on the blue filter 20B in a predetermined layout, but the third uneven portion 37 may also be formed by providing a filter corresponding to another color (e.g., the red filter 20R) in a predetermined layout. Therefore, the third uneven shape CS3 may be a shape determined according to the layout of the filter corresponding to at least one type of color.

[0110] (First Upper Surface Covering Layer) In the display device 10 according to the second embodiment, a first uneven portion 33 having a first uneven shape CS1 is formed on the first upper surface covering layer 28. The first uneven shape CS1 of the first uneven portion 33 is a shape based on the third uneven shape CS3.

[0111] When the first top surface covering layer 28 covers the peripheral light-shielding portion 23, the first top surface covering layer 28 is formed so that an uneven shape reflecting the third uneven shape CS3 of the third uneven portion 37 appears on the surface (top surface) of the first top surface covering layer 28 directly above the peripheral light-shielding portion 23. Therefore, an uneven shape reflecting the surface shape of the peripheral light-shielding portion 23 is formed on the surface (first surface) side of the first top surface covering layer 28 directly above and in the vicinity of the third uneven portion 37 of the peripheral light-shielding portion 23. This uneven shape constitutes at least a part of the first uneven portion 33 having the first uneven shape CS1.

[0112] (Second Upper Surface Coating Layer) In the display device 10 according to the second embodiment, a second uneven portion 34 having a second uneven shape CS2 is formed in the second upper surface coating layer 29. As described in the first embodiment, the second uneven shape CS2 is a shape based on the first uneven shape CS1. The surface of the second upper surface coating layer 29 forms the surface of the base 110, and therefore the surface uneven portion 30 of the base 110 is composed of the second uneven portion 34.

[0113] [3-2 Actions and Effects] According to the display device 10 of the third embodiment, the same effects as those of the first embodiment can be obtained.

[0114] According to the display device 10 of the third embodiment, the peripheral light-shielding portion 23 is formed of the second color filter 20, and a filter (e.g., a green filter 20G) made of the same material as that used for the first color filter 19 is disposed on the surface of the peripheral light-shielding portion 23, thereby forming the third uneven portion 37. Therefore, the third uneven portion 37 can be formed in the peripheral light-shielding portion 23 in conjunction with the formation of the first color filter 19, thereby eliminating the need to add a separate process for forming the third uneven portion 37. As a result, the display device according to the third embodiment can prevent an increase in the number of manufacturing processes.

[0115] [3-3 Modifications] (Modification 1) In the display device 10 according to the third embodiment, the third concave-convex portion 37 of the peripheral light-shielding portion 23 may be formed based on a stacked structure of a red filter 20R and a blue filter 20B, as shown in Fig. 18. This configuration is referred to as Modification 1 of the third embodiment. Fig. 18 is a cross-sectional view schematically showing one example of a display device according to Modification 1 of the third embodiment.

[0116] (Peripheral light-shielding portion) The second color filter 20 forming the peripheral light-shielding portion 23 has a laminated structure in which a blue filter 20B is laminated on a red filter 20R in the thickness direction (Z-axis direction) of the base 110, and has a structure in which the blue filter 20B is formed in a predetermined layout.

[0117] The peripheral light-shielding portion 23 shown in the example of Figure 18 has portions where blue filters 20B are formed and portions where blue filters 20B are not formed. The portions where blue filters 20B are formed form third convex portions 37A, and third concave portions 37B are formed between adjacent portions where blue filters 20B are formed. In the example of Figure 18, the third concave portions 37B are formed by the side surfaces of the blue filters 20B and the portions where blue filters 20B are not formed. In this example, the third concave-convex shape CS3 is formed by a combination of such portions where blue filters 20B are formed and portions where blue filters 20B are not formed. Note that, from the viewpoint of maintaining the functionality of the peripheral light-shielding portion 23, it is preferable to determine the layout of the blue filters so that the areas where blue filters 20B are formed are larger than the areas where blue filters are not formed.

[0118] According to the display device 10 according to the first modification of the third embodiment, it is possible to obtain the same functions and effects as those of the third embodiment described above.

[0119] 18 , the third uneven portion 37 has an uneven shape formed on the peripheral light-shielding portion 23 based on the layout of the blue filter 20B (based on a structure that combines portions where the blue filter 20B is formed and portions where the blue filter 20B is not formed). However, the uneven shape may be formed on the surface of the peripheral light-shielding portion 23 based on the structure of the red filter. For example, the uneven shape may be formed in accordance with differences in the thickness of the red filter (not shown). In this case, an uneven shape is formed on the blue filter to reflect the differences in the thickness of the red filter, and this uneven shape becomes the third uneven shape CS3 of the third uneven portion 37.

[0120] 18 , in the display device 10 according to the third embodiment, the peripheral light-shielding portion 23 may be configured such that the green filter 20G is disposed in a predetermined layout below the stacked structure of the red filter 20R and the blue filter 20B, and a third uneven shape CS3 based on the layout of the green filter 20G may be formed on the surface of the stacked structure (the surface (first surface) of the blue filter 20B). In this case, the portion of the peripheral light-shielding portion 23 where the third uneven shape CS3 is formed becomes the third uneven portion 37.

[0121] (Variation 3) In the display device 10 according to the third embodiment, as shown in FIGS. 19 and 20 , three-dimensional structures 40 are formed in the outer edge region ER of the second region AR2, the three-dimensional structures 40 are covered with the second upper surface covering layer 29, and the portion of the second upper surface covering layer 29 that covers the three-dimensional structures 40 is designated as a structure covering portion 41. In this case, at least a portion of the surface irregularity portion 30 may be formed in the structure covering portion 41. This configuration is referred to as Variation 3 of the third embodiment. FIG. 19 is a plan view schematically showing an example of a display device according to Variation 3 of the third embodiment. FIG. 20 is a cross-sectional view schematically showing an example of a display device according to Variation 3 of the third embodiment. FIG. 20 is a cross-sectional view schematically showing the state of the vertical cross section taken along line H-H in FIG. 19 .

[0122] (Outer Edge Region) The outer edge region ER is defined as a region of the second region AR2 that is outer than the region where the protective layer 16 is formed and outer than the region where the first top surface covering layer 28 is formed in a plan view of the base 110. In the example of Figure 20, the outer edge surface of the protective layer 16 is located closer to the display region 10A than the outer edge surface of the first substrate 111. Furthermore, the first top surface covering layer 28 covers the region where the protective layer 16 is formed in a plan view of the base 110, and the outer edge surface of the first top surface covering layer 28 is located outer than the protective layer 16 and closer to the display region 10A than the outer edge surface of the first substrate 111. That is, in the example of Figure 20, the outer edge region ER is a region that is outer than the region where the first top surface covering layer 28 is formed.

[0123] (Three-dimensional Structure) The base 110 has a three-dimensional structure 40 in the outer edge region ER. The three-dimensional structure 40 is made of a third color filter 21 as the color filter 18. In the example of FIG. 20 , the three-dimensional structure 40 can be formed on the base 110 by providing a green filter 21G as the third color filter 21 in a predetermined layout in the outer edge region ER. The outer edge region ER has formed portions and non-formed portions of the green filter 21G, and the green filter 21G corresponds to the three-dimensional structure 40. Note that in the example of FIG. 20 , the three-dimensional structure 40 is formed by forming the green filter 21G in a predetermined layout in the outer edge region ER, but the three-dimensional structure 40 may also be formed by providing a filter corresponding to another color (for example, a red filter) in a predetermined layout.

[0124] (Second upper surface coating layer) The second upper surface coating layer 29 covers the three-dimensional structures 40. In the example of Fig. 20, the second upper surface coating layer 29 covers the outer end surface of the first upper surface coating layer 28 and further extends to the outer edge region ER. The portion of the second upper surface coating layer 29 that extends to the outer edge region ER covers the three-dimensional structures 40. Note that the portion of the second upper surface coating layer 29 that covers the three-dimensional structures 40 is referred to as the structure-covering portion 41.

[0125] (Second Concave-Convex Portion) A second concave-convex portion 34 having a second concave-convex shape CS2 is formed on the second upper surface coating layer 29. The second concave-convex shape CS2 of the second concave-convex portion 34 includes a shape based on the three-dimensional structure 40.

[0126] When the second upper surface coating layer 29 coats the three-dimensional structures 40, an uneven shape is formed on the surface (first surface) side of the structure-coating portion 41 of the second upper surface coating layer 29 as a shape that follows the surface shape of the three-dimensional structures 40. That is, the second upper surface coating layer 29 is formed so that an uneven shape that reflects the shape of the three-dimensional structures 40 and the shape of the surroundings of the three-dimensional structures 40 appears directly above the three-dimensional structures 40 on the surface (upper surface) of the second upper surface coating layer 29. Therefore, an uneven shape based on the three-dimensional structures 40 is formed in the structure-coating portion 41 of the second upper surface coating layer 29, i.e., directly above the three-dimensional structures 40 and directly above the vicinity thereof. In the example of FIG. 20 , the uneven shape based on the three-dimensional structures 40 is included in at least a part of the second uneven shape CS2 of the second uneven portion 34. And, since the second upper surface coating layer 29 forms the surface of the base 110, the surface uneven portion 30 of the base 110 is composed of the second uneven portion 34. Therefore, at least a portion of the surface unevenness 30 is formed in the structure covering portion 41 of the second upper surface covering layer 29 that covers the three-dimensional structures 40. Note that, for convenience of explanation, in Fig. 20, the shape of the portion of the second unevenness 34 formed in the first peripheral region SR1 is depicted as being slightly arc-shaped, and the shape of the portion of the second unevenness 34 formed in the outer edge region ER is depicted as being angular, but the shapes of these second unevennesses 34 are not limited to these shapes. Also, in Fig. 20, the shape of the portion of the second unevenness 34 formed in the outer edge region ER is illustrated as being different from the shape of the portion of the second unevenness 34 formed in the first peripheral region SR1, but this is just one example. For example, when a positive resist, which is an organic material, is used as the material for the first upper surface coating layer 28 and a negative resist is used as the material for the three-dimensional structure 40, it is possible to make the shape of the portion of the second uneven portion 34 formed in the outer edge region ER different from the shape of the portion of the second uneven portion 34 formed in the outer edge region ER and the shape of the portion of the second uneven portion 34 formed in the first peripheral region SR1, depending on differences in processing processes such as the reflow process.

[0127] (Planarization Layer) The three-dimensional structure 40 may be formed directly on the surface (first surface) of the first substrate 111, but as shown in the example of Figure 20, the planarization layer 17 may be provided not only on the protective layer 16 but also on a predetermined region of the outer edge region ER, and the three-dimensional structure 40 may be provided on the planarization layer 17 provided in the outer edge region ER.

[0128] The display device 10 according to the third modification of the third embodiment can achieve the same effects and advantages as those of the third embodiment described above. Furthermore, since an uneven structure can be formed in the base 110 near the outer edge of the outer region 10B, peeling between the base 110 and the adhesive layer 113 can be more effectively suppressed.

[0129] In addition, in the display device 10 according to variant example 3 of the third embodiment, a third uneven portion 37 is formed in the peripheral shading portion 23, and a three-dimensional structure 40 is provided on the base 110, but in the display device 10 according to the present disclosure, the third uneven portion 37 of the peripheral shading portion 23 may be omitted, and the three-dimensional structure 40 may be provided on the base 110.

[0130] [4 Fourth Embodiment] [4-1 Configuration] In the display device according to the fourth embodiment, as shown in FIGS. 21 and 22 , a recessed structure 43, which is at least one of a groove and a hole, is formed in the extension 42 of the second upper surface covering layer 29, and the recessed structure 43 forms at least a part of the surface unevenness portion 30. Except for these configurations, the display device according to the fourth embodiment may be similar to the first embodiment. Therefore, the configuration of the fourth embodiment, except for the configuration of the extension of the second upper surface covering layer, may be similar to the first embodiment. FIG. 21 is a plan view schematically illustrating an example of a display device according to the fourth embodiment. FIG. 22 is a cross-sectional view schematically illustrating an example of a display device according to the fourth embodiment. FIG. 22 is a cross-sectional view schematically illustrating a vertical cross section taken along line I-I in FIG. 21 . In the description of the fourth embodiment, detailed description of the same configuration as the first embodiment will be omitted.

[0131] (Second Top Coating Layer) The second top coating layer 29 has an extension 42. The second top coating layer 29 covers the outer end surface of the first top coating layer 28 and further extends to the outer edge region ER, and the portion of the second top coating layer 29 formed in the outer edge region ER is defined as the extension 42. Note that the outer edge region ER refers to the region of the second region AR2 that is outside the region where the protective layer 16 is formed and outside the region where the first top coating layer 28 is formed. In the example of FIG. 21 , the extension 42 is formed in a rectangular ring shape in a plan view of the base 110. However, this is just one example of the extension 42 and does not limit the configuration of the extension 42.

[0132] (Recessed Structure) A recessed structure 43 is formed in the extension portion 42 of the second top surface coating layer 29. The recessed structure 43 represents at least one of a groove and a hole. The shape, size, and layout of the recessed structure 43 are not particularly limited. In the example of Figures 21 and 22, a groove 44 as the recessed structure 43 is formed so that its longitudinal direction is along the outer end 28A of the first top surface coating layer 28. Furthermore, the shape, size, and layout of the groove 44 are not particularly limited. In this example, multiple grooves 44 are arranged at intervals toward the outside in the extension portion 42. These multiple grooves 44 are referred to as a groove group 45. In the example of Figures 21 and 22, the multiple groove groups 45 are arranged at intervals from each other along the extension direction of the outer end 28A of the first top surface coating layer 28.

[0133] (Surface Unevenness) The surface of the substrate 110 is formed by a second upper surface coating layer 29, and the unevenness structure formed in the second upper surface coating layer 29 constitutes the surface unevenness 30. As described in the first embodiment, the surface unevenness 30 has a surface convex portion 31 and a surface concave portion 32 as unit shaped portions, and has an uneven shape formed by combining the surface convex portion 31 and the surface concave portion 32. As described above, the second upper surface coating layer 29 has a concave structure 43 formed in the extension portion 42, and therefore the concave structure 43 forms the surface concave portion 32. The concave structure 43 forms at least a part of the surface unevenness 30. In the example of Figures 21 and 22, the groove 44 forms the surface concave portion 32, and therefore the groove 44 forms a part of the surface unevenness 30. Note that in the example of Figures 21 and 22, the portion between adjacent grooves 44 forms the surface convex portion 31.

[0134] [4-2 Actions and Effects] According to the display device of the fourth embodiment, the same effects as those of the first embodiment can be obtained.

[0135] [5 Fifth Embodiment] [5-1 Configuration] As shown in FIG. 23 , the display device according to the fifth embodiment has a configuration in which a layer corresponding to the second upper surface covering layer 29 is omitted from the configuration of the display device according to the first embodiment, and a layer covering the first color filter 19 and the peripheral light-shielding portion 23 (upper surface covering layer 50 in the fifth embodiment) is in contact with an adhesive layer 113. FIG. 23 is a cross-sectional view schematically showing an example of a display device according to the fifth embodiment. Therefore, the configuration of the fifth embodiment may be the same as that of the first embodiment, except for the configuration of the first upper surface covering layer. In the description of the fifth embodiment, detailed description of the same configuration as that of the first embodiment will be omitted.

[0136] (Top Surface Covering Layer) In the display device according to the fifth embodiment, the base 110 has a top surface covering layer 50. Similar to the first top surface covering layer 28 described in the first embodiment, the top surface covering layer 50 covers the first color filter 19 and the peripheral light-shielding portion 23 and is formed of an organic resin. The top surface covering layer 50 forms the surface of the base 110 and is in contact with the adhesive layer 113.

[0137] (Unevenness) The upper surface coating layer 50 has an unevenness 51. In the upper surface coating layer 50, the unevenness 51 may be formed in the same manner as the first unevenness 33 described in the first embodiment. The unevenness 51 is formed on the surface of the base 110 facing the adhesive layer 113 in a plan view, and in at least the second region AR2. The unevenness 51 is composed of a combination of convex portions 51A as portions having a convex shape and concave portions 51B as portions having a concave shape. In the example shown in FIG. 23 , the unevenness 51 is formed in both the first peripheral region SR1 and the second peripheral region SR2 of the second region AR2. However, this is just an example, and the unevenness 51 may also be formed in either the first peripheral region SR1 or the second peripheral region SR2 of the second region AR2.

[0138] The uneven portion 51 has an uneven shape CSU. The uneven shape CSU of the uneven portion 51 may be the same shape as the first uneven shape CS1 described in the first embodiment.

[0139] The method for forming the uneven portion 51 can be the same as the method for forming the first uneven portion 33. For example, the uneven portion 51 can be specifically formed by applying the method for forming the lens 22 described in the second embodiment to the surface of the organic coating layer that becomes the upper surface coating layer 50.

[0140] In the display device 10 according to the fifth embodiment, the surface irregularity portion 30 of the base 110 is composed of irregularities 51 .

[0141] [5-2 Actions and Effects] According to the display device of the fifth embodiment, the same effects as those of the first embodiment can be obtained.

[0142] [5-3 Modification] In the display device according to the fifth embodiment, similarly to the second embodiment, the concave-convex portion 51 may be formed in the first region AR1 and the second region AR2. This form is referred to as a modification of the fifth embodiment. In the modification of the fifth embodiment, the convex portion 51A of the concave-convex portion 51 formed in the second region AR2 may have a three-dimensional shape that becomes the lens 22. Furthermore, the convex portion 51A formed in the first region AR1 may have a three-dimensional shape that becomes the lens 22.

[0143] [6 Sixth Embodiment] [6-1 Configuration] As shown in FIG. 24 , the display device according to the sixth embodiment has a configuration in which the layers corresponding to the first upper surface covering layer 28 and the second upper surface covering layer 29 are omitted from the configuration of the display device according to the third embodiment, and at least the peripheral light-shielding portion 23 is in contact with the adhesive layer 113. FIG. 24 is a cross-sectional view schematically illustrating an example of a display device according to the sixth embodiment. Therefore, in the sixth embodiment, the configuration of the other parts of the base 110, except for the configuration of the part that contacts the adhesive layer 113, may be the same as in the third embodiment. Furthermore, the same configuration as in the first embodiment in the third embodiment may also be the same as in the first embodiment. In the description of the sixth embodiment, detailed description of the same configuration as in the third embodiment will be omitted, and detailed description of the same configuration as in the first embodiment will also be omitted.

[0144] 24 , the peripheral light-shielding portion 23 is exposed on the surface of the base 110, and the surface (first surface) of the peripheral light-shielding portion 23 is in contact with the adhesive layer 113. The uneven shape of the surface of the peripheral light-shielding portion 23 forms at least a part of the surface unevenness portion 30.

[0145] As described in the third embodiment, the peripheral light-shielding portion 23 has the second color filter 20. In the example of Fig. 24, the peripheral light-shielding portion 23 has a laminated structure in which a red filter 20R and a blue filter 20B are laminated, and further has a structure in which a green filter 20G is formed in a predetermined layout on the laminated structure (on the surface of the blue filter 20B).

[0146] (Uneven portion) An uneven portion 55 is formed on the surface (first surface) of the peripheral light-shielding portion 23. The uneven portion 55 is configured in the same manner as the third uneven portion 37 described in the third embodiment. The uneven portion 55 is configured by a combination of convex portions 55A as portions having a convex shape and concave portions 55B as portions having a concave shape.

[0147] The uneven portion 55 has an uneven shape CSF, which is the same shape as the third uneven shape CS3 described in the third embodiment.

[0148] The concave-convex shape CSF of the concave-convex portion 51 is a concave-convex shape determined according to the structure of the second color filter 20 (i.e., according to the stacked structure of the second color filter 20), as in the third embodiment. The peripheral light-shielding portion 23 shown in the example of FIG. 24 has portions where the green filter 20G is formed and portions where it is not formed. The portions where the green filter 20G is formed form convex portions 55A, and concave portions 55B are formed between adjacent portions where the green filter 20G is formed. In the example of FIG. 24, the concave portions 55B are formed by the side surfaces of the green filter 20G and the portions where the green filter 20G is not formed. In this example, the concave-convex shape CSF is determined by the combination of the portions where the green filter 20G is formed and the portions where the green filter 20G is not formed. Note that in the example of FIG. 24, the concave-convex portion 55 may be formed by providing a filter (e.g., a red filter 20R) corresponding to a color type other than the green filter 20G on the blue filter 20B in a predetermined layout. Therefore, the concave-convex shape CSF may be a shape determined according to the layout of a filter corresponding to at least one color type.

[0149] 24 , the surface unevenness portion 30 of the base 110 is configured with an unevenness portion 55. Therefore, in the example of Fig. 24 , the surface unevenness portion 30 of the base 110 has an unevenness shape CSF that is formed on the surface of the peripheral light-shielding portion 23 and is determined according to the layout of the second color filter 20.

[0150] [6-2 Actions and Effects] According to the display device of the sixth embodiment, the same effects as those of the third embodiment can be obtained.

[0151] [6-3 Modifications] (Modification 1) In the display device 10 according to the sixth embodiment, as shown in Fig. 25 , the concave-convex portion 55 of the peripheral light-shielding portion 23 may be formed based on a stacked structure of a red filter 20R and a blue filter 20B, similar to Modification 1 of the third embodiment. This configuration is referred to as Modification 1 of the sixth embodiment. Fig. 25 is a cross-sectional view schematically showing one example of a display device according to Modification 1 of the sixth embodiment.

[0152] The second color filter 20 forming the peripheral light-shielding portion 23 has a layered structure in which a blue filter 20B is layered on a red filter 20R, and the blue filter 20B is formed in a predetermined layout.

[0153] The uneven shape CSF of the uneven portion 55 of the peripheral light-shielding portion 23 shown in the example of FIG. 25 is an uneven shape determined by a combination of portions where the blue filter 20B is formed and portions where the blue filter 20B is not formed.

[0154] 25 example, the uneven portion 55 is formed based on the layout of the blue filter 20B in the peripheral light-shielding portion 23 (based on a structure that combines formed and unformed portions of the blue filter 20B), but the uneven portion 55 may also be formed by forming an uneven structure on the surface of the peripheral light-shielding portion 23 based on the structure of the red filter. For example, as shown in FIG. 26, the uneven portion 55 may be formed in accordance with differences in the thickness of the red filter. In this case, an uneven shape is formed in the blue filter 20B to reflect the difference in thickness of the red filter 20R, and this uneven shape becomes the uneven shape CSF of the uneven portion 55.

[0155] (Variation 2) In the display device 10 according to the sixth embodiment, as shown in FIG. 27 , the peripheral light-shielding portion 23 may be configured such that the green filter 20G is disposed in a predetermined layout below the stacked structure of the red filter 20R and the blue filter 20B, and a concave-convex shape CSF based on the layout of the green filter 20G may be formed on the surface of the stacked structure (the surface (first surface) of the blue filter 20B). In this case, the red filter 20R is formed to follow the shape of the green filter 20G in the portion where the green filter 20G is formed, and a concave-convex structure reflecting the shape of the green filter 20G is formed on the upper surface (first surface) of the red filter. Furthermore, the blue filter 20B formed on the upper surface (first surface) of the red filter 20R has a concave-convex structure reflecting the shape of the red filter 20R on the upper surface (first surface) of the blue filter 20B. The concave-convex structure formed on the upper surface of the blue filter 20B constitutes the concave-convex portion 55. Furthermore, the shape of the uneven portion 55 formed on the surface of the peripheral light-shielding portion 23 is the uneven shape CSF.

[0156] (Variation 3) In the display device 10 according to the sixth embodiment, as shown in Fig. 28 , three-dimensional structures 56 may be formed in the outer peripheral region NR of the second region AR2, the three-dimensional structures 56 may be in contact with the adhesive layer 113, and the three-dimensional structures 56 may form at least a part of the surface unevenness portion 30. This configuration is referred to as Variation 3 of the sixth embodiment. Fig. 28 is a cross-sectional view schematically showing an example of a display device according to Variation 3 of the sixth embodiment.

[0157] (Outer peripheral region) The outer peripheral region NR is defined as the region of the second region AR2 that is outer than the outer edge of the peripheral light-shielding portion 23 in a plan view of the base 110. It is defined as the region that is outer than the formation region of the protective layer 16 and outer than the formation region of the first top surface covering layer 28. In the example of FIG. 28 , the outer end surface of the protective layer 16 is located closer to the display region 10A than the outer end surface of the first substrate 111. That is, in the example of FIG. 28 , the outer peripheral region NR is formed so that the boundary between the first peripheral region SR1 and the second peripheral region SR2 is located in the outer peripheral region NR.

[0158] (Three-dimensional Structure) The three-dimensional structure 56 is provided in the outer peripheral region NR. In the example of Fig. 28, the three-dimensional structure 56 is formed in the second peripheral region SR2.

[0159] The three-dimensional structure 56 may have a structure similar to that of the three-dimensional structure 40 described in Modification 3 of the third embodiment. The three-dimensional structure 56 is composed of a third color filter 21 as the color filter 18. In the example of FIG. 28 , the three-dimensional structure 56 is provided on the base 110 by providing a green filter 21G as the third color filter 21 at a predetermined position in a predetermined layout in the second peripheral region SR2 included in the outer peripheral region NR. The second peripheral region SR2 has formed portions and non-formed portions of the green filter 21G, and the green filter 21G corresponds to the three-dimensional structure 56. Note that in the example of FIG. 28 , the three-dimensional structure 56 is formed of the green filter 21G, but the three-dimensional structure 56 may also be formed of a filter corresponding to another color (e.g., a red filter).

[0160] In the display device 10, the surface of the three-dimensional structure 56 is exposed on the surface of the base 110, and the three-dimensional structure 56 is in contact with the adhesive layer 113. The three-dimensional structure 56 also forms an uneven structure on the surface of the base 110. Therefore, the three-dimensional structure 56 forms at least a part of the surface uneven portion 30 of the base 110.

[0161] (Planarization Layer) The three-dimensional structure 56 may be formed directly on the surface (first surface) of the first substrate 111, but as shown in the example of Figure 28, the planarization layer 17 may be provided not only on the protective layer 16 but also on a predetermined region of the outer peripheral region NR, and the three-dimensional structure 56 may be provided on the planarization layer 17 provided in the outer peripheral region NR.

[0162] The display device 10 according to the third modification of the sixth embodiment can achieve the same effects and advantages as those of the sixth embodiment described above. Furthermore, since an uneven structure can be formed in the base 110 near the outer edge of the outer region 10B, peeling between the base 110 and the adhesive layer 113 can be more effectively suppressed.

[0163] In the example of the display device 10 according to the third modification of the sixth embodiment shown in Fig. 28 , the peripheral light-shielding portion 23 has the second color filter 20, as described in the example of Fig. 24 . The peripheral light-shielding portion 23 has a laminated structure in which a red filter 20R and a blue filter 20B are stacked, and further has a structure in which a green filter 20G is formed in a predetermined layout on top of the laminated structure (on the surface of the blue filter 20B). However, this is just one example, and in the display device 10 according to the third modification of the sixth embodiment, for example, the peripheral light-shielding portion 23 may be configured similarly to the display device 10 according to the first or second modification of the sixth embodiment, as shown in the examples of Figs. 25 to 27 .

[0164] In the display device 10 according to variant example 3 of the sixth embodiment, an uneven portion 55 is formed in the peripheral shading portion 23, and a three-dimensional structure 56 is provided on the base 110; however, in the display device 10 according to the present disclosure, the uneven portion 55 in the peripheral shading portion 23 may be omitted, and the three-dimensional structure 56 may be provided on the base 110.

[0165] [7 Seventh Embodiment] As shown in FIG. 29 , a display device according to the seventh embodiment is configured similarly to the first embodiment, except that an optical lens 115 made of glass, resin, or the like is provided as the second substrate 112. FIG. 29 is a cross-sectional view schematically illustrating an example of a display device according to the seventh embodiment. Therefore, the configuration of the seventh embodiment, except for the material of the second substrate 112, can be the same as that of the first embodiment, and detailed description of the configuration of each layer will be omitted. The display device according to the seventh embodiment can also achieve the same effects as those of the first embodiment. The optical lens 115 is disposed so as to cover the plurality of sub-pixels 101, etc. Note that, for the sake of convenience, FIG. 29 does not specifically illustrate the structure of the optical lens 115. However, FIGS. 30A , 30B , and 30C show an example of an optical lens 115 that can be used as the second substrate 112. 30A , 30B, and 30C , examples of the optical lens 115 include a convex lens 115A, a concave lens 115B, and a Fresnel lens 115C. The concave lens 115B can be a cover glass or the like having a structure formed with a first layer 115B1 and a second layer 115B2 to function as a concave lens. For ease of explanation, only the adhesive layer 113 and the optical lens 115 of the display device 10 are shown in FIGS. 30A , 30B, and 30C , and other components are omitted.

[0166] [8 Application Examples] (Electronic Devices) As application examples, the display device 10 according to each of the above-described embodiments may be provided in various electronic devices. In particular, it is preferable to provide it in devices that require high resolution and are used with magnification near the eyes, such as electronic viewfinders for video cameras and single-lens reflex cameras, or head-mounted displays. Examples of electronic devices include the following specific examples 1 to 6.

[0167] Specific Example 1 Fig. 31A is a front view showing an example of the appearance of a digital still camera 310. Fig. 31B is a rear view showing an example of the appearance of a 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 a camera main body (camera body) 311, and a grip part 313 for the photographer to hold on the left side of the front.

[0168] 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.

[0169] 32 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.

[0170] 33 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 one of the display devices 10 according to the above-described embodiment and modified examples.

[0171] 34 shows an example of the appearance of a see-through head mounted display 340. The see-through head mounted display 340 includes a main body 341, an arm 342, and a lens barrel 343.

[0172] The main body 341 is connected to the arm 342 and the glasses 350. Specifically, an end of the long side of the main body 341 is coupled to the arm 342, and one side of the main body 341 is connected to the glasses 350 via a connecting member. The main body 341 may also be worn directly on the head of a human body.

[0173] The main body 341 incorporates a control board for controlling the operation of the see-through head mounted display 340 and a display unit. The arm 342 connects the main body 341 to the lens barrel 343 and supports the lens barrel 343. Specifically, the arm 342 is coupled to an end of the main body 341 and an end of the lens barrel 343, respectively, and fixes the lens barrel 343. The arm 342 also incorporates a signal line for communicating data related to images provided from the main body 341 to the lens barrel 343.

[0174] The lens barrel 343 projects image light provided from the main body 341 via the arm 342 through an eyepiece 351 toward the eyes of a user wearing the see-through head mounted display 340. In this see-through head mounted display 340, the display unit of the main body 341 includes any one of the above-described display devices 10, etc.

[0175] 35 is a perspective view showing an example of the appearance of a smartphone 360. As shown in Fig. 35 , the smartphone 360 ​​has a display unit 361 that displays information such as pixels, and an operation unit 362 that is configured with buttons and the like that accept operation inputs by the user. The display device 10 according to the above-described embodiment and modified example can be applied to this display unit 361.

[0176] (Example 6) The display device 10 and the like may be provided in a vehicle or in various displays.

[0177] 36A and 36B are diagrams showing an example of the internal configuration of a vehicle 500 equipped with various displays. Specifically, Fig. 36A is a diagram showing an example of the internal appearance of the vehicle 500 from the rear to the front of the vehicle 500, and Fig. 36B is a diagram showing an example of the internal appearance of the vehicle 500 from diagonally rear to diagonally front of the vehicle 500.

[0178] The vehicle 500 includes a center display 501, a console display 502, a head-up display 503, a digital rearview mirror 504, a steering wheel display 505, and a rear entertainment display 506. At least one of these displays includes any of the above-described display devices 10, etc. For example, all of these displays may include any of the above-described display devices 10, etc.

[0179] The center display 501 is disposed in a portion of the dashboard facing the driver's seat 508 and the passenger seat 509. While FIGS. 36A and 36B show an example of a horizontally elongated center display 501 extending from the driver's seat 508 side to the passenger seat 509 side, the screen size and location of the center display 501 are arbitrary. The center display 501 can display information detected by various sensors. As a specific example, the center display 501 can display an image captured by an image sensor, a distance image to obstacles in front of or to the side of the vehicle 500 measured by a ToF sensor, and the body temperature of a passenger detected by an infrared sensor. The center display 501 can be used to display, for example, at least one of safety-related information, operation-related information, a life log, health-related information, authentication / identification-related information, and entertainment-related information.

[0180] The safety-related information includes information such as detection of drowsiness, distraction, child mischief, whether a seatbelt is fastened, and whether a passenger has been abandoned. For example, this information is detected by a sensor placed on the back side of the center display 501. The operation-related information is obtained by detecting gestures related to passenger operations using a sensor. The detected gestures may include operations of various equipment within the vehicle 500. For example, operations of the air conditioning system, navigation system, AV system, lighting system, etc. are detected. The life log includes life logs of all passengers. For example, the life log includes a record of each passenger's actions while on board. By acquiring and saving the life log, the condition of the passenger at the time of the accident can be confirmed. The health-related information is obtained by detecting the passenger's body temperature using a sensor such as a temperature sensor, and inferring the passenger's health condition based on the detected body temperature. Alternatively, an image sensor may be used to capture an image of the passenger's face, and the passenger's health condition may be inferred from the facial expression in the image. Furthermore, the system may have an automated voice conversation with the occupant and estimate the occupant's health condition based on the occupant's responses. The authentication / identification-related information includes a keyless entry function that uses a sensor to perform facial recognition, a function that automatically adjusts seat height and position using facial recognition, etc. The entertainment-related information includes a function that uses a sensor to detect operation information of an AV device by the occupant, and a function that recognizes the occupant's face using a sensor and provides content suitable for the occupant via the AV device.

[0181] The console display 502 can be used to display, for example, life log information. The console display 502 is disposed near a shift lever 511 on a center console 510 between a driver's seat 508 and a passenger seat 509. Information detected by various sensors can also be displayed on the console display 502. Furthermore, the console display 502 may display an image of the vehicle's surroundings captured by an image sensor, or an image showing the distance to an obstacle around the vehicle.

[0182] The head-up display 503 is virtually displayed behind the windshield 512 in front of the driver's seat 508. The head-up display 503 can be used to display, for example, at least one of safety-related information, operation-related information, a life log, health-related information, authentication / identification-related information, and entertainment-related information. Because the head-up display 503 is often virtually located in front of the driver's seat 508, it is suitable for displaying information directly related to the operation of the vehicle 500, such as the speed of the vehicle 500 and the remaining fuel (battery) level.

[0183] The digital rearview mirror 504 can not only display the rear of the vehicle 500 but also the status of passengers in the rear seats. Therefore, by placing a sensor on the back side of the digital rearview mirror 504, it can be used to display life log information, for example.

[0184] The steering wheel display 505 is disposed near the center of the steering wheel 513 of the vehicle 500. The steering wheel display 505 can be used to display at least one of, for example, safety-related information, operation-related information, a life log, health-related information, authentication / identification-related information, and entertainment-related information. In particular, because the steering wheel display 505 is located near the driver's hands, it is suitable for displaying life log information such as the driver's body temperature, and for displaying information regarding the operation of AV equipment, air conditioning equipment, etc.

[0185] The rear entertainment display 506 is attached to the back side of the driver's seat 508 and the passenger seat 509 and is intended for viewing by rear seat passengers. The rear entertainment display 506 can be used to display, for example, at least one of safety-related information, operation-related information, a life log, health-related information, authentication / identification-related information, and entertainment-related information. In particular, since the rear entertainment display 506 is located directly in front of the rear seat passengers, information related to the rear seat passengers is displayed on the rear entertainment display 506. For example, the rear entertainment display 506 may display information related to the operation of an AV device or an air conditioning system, or may display the results of measuring the body temperature of the rear seat passengers using a temperature sensor.

[0186] A sensor may be arranged on the back side of the display device 10 or the like, enabling the distance to surrounding objects to be measured. Optical distance measurement methods are broadly divided into passive and active types. Passive methods measure distance by receiving light from an object without projecting light from the sensor onto the object. Passive methods include the lens focusing method, the stereo method, and the monocular vision method. Active methods measure distance by projecting light onto an object and receiving the light reflected from the object with a sensor. Active methods include the optical radar method, the active stereo method, the photometric stereo method, the moire topography method, and the interferometry method. The display device 10 or the like described above can be applied to any of these distance measurement methods. The above-mentioned passive or active distance measurement can be performed by using a sensor arranged on the back side of the display device 10 or the like.

[0187] 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.

[0188] 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 modified examples, and in the application examples, are merely examples, and different configurations, methods, processes, shapes, materials, and numerical values, etc., may be used as necessary.

[0189] 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 modified examples, and the application examples, can be combined with each other as long as they do not deviate from the gist of this disclosure.

[0190] Unless otherwise specified, the materials exemplified in the display devices according to the first to eleventh embodiments and their respective modifications, and in the application examples, can be used singly or in combination of two or more.

[0191] The present disclosure may also employ the following configuration. (1) A display device comprising: a base having a display area, the base having a first substrate, a light-emitting element having a structure in which a first electrode, an organic layer, and a second electrode are laminated in this order on the first substrate, a protective layer covering the light-emitting element, a color filter formed on the protective layer, and a peripheral light-shielding portion formed outside the display area; a second substrate facing the surface of the base where the light-emitting element is formed, and an adhesive layer disposed between the base and the second substrate and bonding the base and the second substrate; when a region inside from an inner edge of the peripheral light-shielding portion in a plan view of the base is defined as a first region and a region outside from the inner edge of the peripheral light-shielding portion is defined as a second region, the base has, as the color filters, a first color filter provided in the first region and a second color filter provided in the second region and forming the peripheral light-shielding portion; and a surface unevenness portion formed on the surface of the base in a region in contact with the adhesive layer in a plan view of the base and in at least the second region. (2) The display device according to (1), wherein the base has a first top surface coating layer that covers the first color filter and the peripheral light-shielding portion and is formed from an organic resin, and a second top surface coating layer that covers the first top surface coating layer and is formed from an inorganic material, wherein the first top surface coating layer has a first uneven portion having a first uneven shape on a surface facing the second top surface coating layer in a plan view of the base and in the second region, wherein the second top surface coating layer has a second uneven portion that has a second uneven shape based on the first uneven shape of the first uneven portion formed on a surface facing the adhesive layer in a plan view of the base, and wherein the surface uneven portion is composed of the second uneven portion. (3) The display device according to (2), wherein the surface uneven portion, the first uneven portion, and the second uneven portion are further formed in the first region. (4) The display device according to (3), wherein the first upper surface covering layer has a lens in at least the first region, and the lens also serves as at least a part of the first concave-convex portion. (5) The display device according to (4), wherein the first upper surface covering layer further has the lens in the second region.(6) The display device described in (2) above, wherein the outer end surface of the protective layer is located closer to the display area than the outer end surface of the first substrate, the first top surface covering layer and the second top surface covering layer cover the formation area of ​​the protective layer in a planar view of the base and are formed to extend outside the protective layer, and when the area of ​​the second area where the protective layer is formed is defined as a first peripheral area and the area outside the first peripheral area is defined as a second peripheral area, the first uneven portion and the second uneven portion are formed in the second peripheral area. (7) The base has a first top surface coating layer that covers the first color filter and the peripheral light-shielding portion and is formed from an organic resin, and a second top surface coating layer that covers the first top surface coating layer and is formed from an inorganic material, the first top surface coating layer has a first uneven portion that has a first uneven shape on a surface facing the second top surface coating layer in a plan view of the base and in the second region, the second top surface coating layer has a second uneven portion that has a second uneven shape based on the first uneven shape of the first uneven portion on a surface facing the adhesive layer in a plan view of the base, the peripheral light-shielding portion has a third uneven portion that has a third uneven shape as an uneven shape determined in accordance with the structure of the second color filter on a surface facing the first top surface coating layer, the first uneven shape of the first uneven portion is a shape based on the third uneven shape of the third uneven portion, and the surface uneven portion is composed of the second uneven portion. The display device according to (1) above. (8) The display device according to (7) above, wherein the peripheral light-shielding portion has a structure in which a plurality of filters corresponding to a plurality of color types are stacked in a thickness direction of the base as the second color filter, and the concave-convex shape of the peripheral light-shielding portion is a shape determined according to a layout of the filters corresponding to at least one type of color type.(9) The display device according to any one of (1), (7) and (8) above, wherein the base has a first top surface coating layer that covers the first color filter and the peripheral light-shielding portion and is formed from an organic resin, and a second top surface coating layer that covers the first top surface coating layer and is formed from an inorganic material, the outer end surface of the protective layer and the outer end surface of the first top surface coating layer are located closer to the display area than the outer end surface of the first substrate, and when the area of ​​the second area that is outside the area where the protective layer is formed and outside the area where the first top surface coating layer is formed is defined as an outer edge area, the base has a three-dimensional structure consisting of a third color filter as the color filter in the outer edge area, the second top surface coating layer has a structure covering portion that covers the three-dimensional structure, and at least a part of the surface unevenness portion is formed in the structure covering portion. (10) The display device described in any one of (1), (7), (8) and (9) above, wherein the base has a first top surface coating layer that covers the first color filter and the peripheral light-shielding portion and is formed from an organic resin, and a second top surface coating layer that covers the first top surface coating layer and is formed from an inorganic material, the outer end surface of the protective layer and the outer end surface of the first top surface coating layer are located closer to the display area than the outer end surface of the first substrate, when the area of ​​the second area that is outside the area where the protective layer is formed and outside the area where the first top surface coating layer is formed is defined as an outer edge area, a part of the second top surface coating layer is formed in the outer edge area, when the part of the second top surface coating layer that is formed in the outer edge area is defined as an extension, the extension has a concave structure of at least one of a groove and a hole, and the concave structure forms at least a part of the surface unevenness. (11) The display device described in any one of (1), (7), (8) and (9) above, wherein the base has an upper surface coating layer formed from an organic resin and covering the first color filter and the peripheral light-shielding portion, the upper surface coating layer has an uneven portion having an uneven shape on the surface facing the adhesive layer in a planar view of the base and at least in the second region, and the surface uneven portion is composed of the uneven portion.(12) The display device according to (1) above, wherein the surface irregularity portion is formed on the surface of the peripheral light-shielding portion of the base, and is formed in an irregular shape determined according to the structure of the second color filter. (13) The display device according to any one of (1), (2), and (6) to (12) above, wherein the surface irregularity portion has a plurality of unit shaped portions which are at least one of surface convex portions and surface concave portions, and at least one type of unit shaped portion is arranged concentrically in a plan view of the base. (14) The display device according to any one of (1), (2), and (6) to (12) above, wherein the surface irregularity portion has a plurality of unit shaped portions which are at least one of surface convex portions and surface concave portions, and has a plurality of unit shaped groups each consisting of a plurality of the unit shaped portions, and at least one type of unit shaped group is arranged concentrically in a plan view of the base. (15) The display device according to any one of (1), (2), and (6) to (12) above, wherein the surface irregularity portion has a plurality of surface convex portions and surface concave portions, and the surface convex portions and the surface concave portions are formed so as to be alternately arranged in a direction along the boundary between the first region and the second region. (16) The display device according to any one of (1) to (15) above, wherein the second substrate is a polarizing plate. (17) An electronic device comprising the display device according to any one of (1) to (16) above.

[0192] 10: Display device 13: First electrode 14: Organic layer 15: Second electrode 16: Protective layer 18: Color filter 19: First color filter 20: Second color filter 22: Lens 23: Peripheral light-shielding portion 23A: Inner edge portion 28: First upper surface coating layer 29: Second upper surface coating layer 30: Surface uneven portion 33: First uneven portion 34: Second uneven portion 40: Three-dimensional structure 44: Groove 50: Upper surface coating layer 51: Uneven portion 55: Uneven portion 56: Three-dimensional structure 101: Sub-pixel 104: Light-emitting element 110: Base 111: First substrate 112: Second substrate 113: Adhesive layer 114: Polarizing plate 115: Optical lens 310: Digital still camera 320: Head mounted display 330: Television device 340: See-through head mounted display 350: Glasses 360: Smartphone 500: Vehicle AR1: First region AR2: Second region ER: Outer edge region NR: Outer peripheral region SR1: First peripheral region SR2: Second peripheral region

Claims

1. A display device comprising: a base having a display area, a first substrate, a light-emitting element having a structure in which a first electrode, an organic layer, and a second electrode are laminated in this order on the first substrate, a protective layer covering the light-emitting element, a color filter formed on the upper side of the protective layer, and a peripheral light-shielding portion formed outside the display area; a second substrate facing the surface of the base on which the light-emitting element is formed; and an adhesive layer disposed between the base and the second substrate and bonding the base and the second substrate, wherein, in a plan view of the base, a region inside from an inner edge of the peripheral light-shielding portion is defined as a first region, and a region outside from the inner edge of the peripheral light-shielding portion is defined as a second region, the base has, as its color filters, a first color filter provided in the first region, and a second color filter provided in the second region and forming the peripheral light-shielding portion, and a surface unevenness is formed on the surface of the base in a region that is in contact with the adhesive layer in a plan view of the base and at least in the second region.

2. The display device of claim 1, wherein the base has a first top surface coating layer formed from an organic resin and covering the first color filter and the peripheral light-shielding portion, and a second top surface coating layer formed from an inorganic material and covering the first top surface coating layer, the first top surface coating layer has a first uneven portion having a first uneven shape on a surface facing the second top surface coating layer in a planar view of the base and in the second region, the second top surface coating layer has a second uneven portion having a second uneven shape based on the first uneven shape of the first uneven portion formed on a surface facing the adhesive layer in a planar view of the base, and the surface uneven portion is composed of the second uneven portion.

3. The display device according to claim 2, wherein the surface unevenness portion, the first unevenness portion and the second unevenness portion are further formed in the first region.

4. The display device according to claim 3, wherein the first upper surface covering layer has a lens in at least the first region, and the lens also serves as at least a part of the first uneven portion.

5. The display device according to claim 4, wherein the first upper surface covering layer further comprises the lens in the second region.

6. The display device of claim 2, wherein an outer end surface of the protective layer is located closer to the display area than an outer end surface of the first substrate, the first top surface covering layer and the second top surface covering layer cover the formation area of ​​the protective layer in a planar view of the base and are formed to extend outside the protective layer, and when a region of the second area where the protective layer is formed is defined as a first peripheral area and a region outside the first peripheral area is defined as a second peripheral area, the first uneven portion and the second uneven portion are formed in the second peripheral area.

7. The base has a first top coating layer that covers the first color filter and the peripheral light-shielding portion and is formed of an organic resin, and a second top coating layer that covers the first top coating layer and is formed of an inorganic material, the first top coating layer has a first uneven portion having a first uneven shape on a surface facing the second top coating layer in a plan view of the base and in the second region, the second top coating layer has a second uneven portion having a second uneven shape based on the first uneven shape of the first uneven portion on a surface facing the adhesive layer in a plan view of the base, the peripheral light-shielding portion has a third uneven portion having a third uneven shape as an uneven shape determined according to the structure of the second color filter on a surface facing the first top coating layer, the first uneven shape of the first unevenness portion is a shape based on the third uneven shape of the third unevenness portion, and the surface unevenness portion is composed of the second uneven portion. The display device according to claim 1 .

8. The display device according to claim 7, wherein the peripheral light shielding portion has a structure in which a plurality of filters corresponding to a plurality of color types are stacked in a direction along the thickness direction of the base as the second color filter, and the uneven shape of the peripheral light shielding portion is a shape determined according to the layout of the filters corresponding to at least one type of color type.

9. The display device of claim 1, wherein the base has a first top surface covering layer that covers the first color filter and the peripheral light-shielding portion and is formed from an organic resin, and a second top surface covering layer that covers the first top surface covering layer and is formed from an inorganic material, the outer end surface of the protective layer and the outer end surface of the first top surface covering layer are located closer to the display area than the outer end surface of the first substrate, and when a region of the second area that is outside the formation area of ​​the protective layer and outside the formation area of ​​the first top surface covering layer is defined as an outer edge area, the base has a three-dimensional structure consisting of a third color filter as the color filter in the outer edge area, the second top surface covering layer has a structure covering portion that covers the three-dimensional structure, and at least a portion of the surface unevenness portion is formed in the structure covering portion.

10. The display device of claim 1, wherein the base has a first top surface covering layer formed from an organic resin and covering the first color filter and the peripheral light-shielding portion, and a second top surface covering layer formed from an inorganic material and covering the first top surface covering layer, the outer end surface of the protective layer and the outer end surface of the first top surface covering layer are located closer to the display area than the outer end surface of the first substrate, and when a region of the second area that is outside the formation area of ​​the protective layer and outside the formation area of ​​the first top surface covering layer is defined as an outer edge area, a part of the second top surface covering layer is formed in the outer edge area, and when a portion of the second top surface covering layer formed in the outer edge area is defined as an extension, the extension has a concave structure of at least one of a groove and a hole, and the concave structure forms at least a part of the surface unevenness.

11. The display device described in claim 1, wherein the base has an upper surface coating layer formed from an organic resin and covering the first color filter and the peripheral light-shielding portion, the upper surface coating layer has an uneven portion having an uneven shape on the surface facing the adhesive layer in a planar view of the base and at least in the second region, and the surface uneven portion is composed of the uneven portion.

12. The display device according to claim 1, wherein the surface irregularity portion of the base is formed on the surface of the peripheral light-shielding portion, and is formed in an irregular shape determined according to the structure of the second color filter.

13. The display device according to claim 1, wherein the surface irregularity portion has a plurality of unit shaped portions which are at least one of a surface convex portion and a surface concave portion, and at least one type of the unit shaped portions is concentrically arranged in a plan view of the base body.

14. The display device of claim 1, wherein the surface unevenness portion has a plurality of unit shape portions which are at least one of surface convex portions and surface concave portions, and has a plurality of unit shape groups each consisting of a plurality of the unit shape portions, and at least one type of the unit shape groups is concentrically arranged in a plan view of the base.

15. The display device of claim 1, wherein the surface irregularity portion has a plurality of surface convex portions and surface concave portions, and the surface convex portions and the surface concave portions are arranged alternately in a direction along the boundary between the first region and the second region.

16. The display device according to claim 1, wherein the second substrate is a polarizing plate or an optical lens.

17. An electronic device comprising the display device according to claim 1.

Images