Display device and electronic apparatus

Abstract

Provided are a display device and an electronic apparatus capable of suppressing peeling of an adhesive layer from a layer disposed on an outermost surface of a base bonded to a second substrate, for example, when the second substrate and the adhesive layer bonding the second substrate to the base deteriorate. The display device includes: a base having a display area 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 stacked on the first substrate in this order; a protective layer covering the light emitting element; a color filter formed on an upper side of the protective layer; the peripheral shading part is formed on the outer side of the display area; a second substrate facing a surface of the base on which the light emitting element is formed; and an adhesive layer provided between the base and the second substrate and joining the base and the second substrate. In a plan view of the base body, a region inside an inner edge portion of the peripheral light shielding portion is a first region and a region outside the inner edge portion of the peripheral light shielding portion is a second region. The base body has, as color filters, a first color filter disposed in the first region and a second color filter disposed in the second region and forming a peripheral light shielding portion. On the surface of the base body, a surface uneven portion is formed in a region that is in contact with the adhesive layer and includes at least the second region in a plan view of the base body.

Description

Technical Field

[0001] This disclosure relates to display devices and electronic devices. Background Technology

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

[0003] Reference List

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application No. 2006-120635 Summary of the Invention

[0006] The problem to be solved by the present invention

[0007] The display device disclosed in Patent Document 1 still has room for improvement in the following aspects: in the event of deterioration of the second substrate and the adhesive layer for bonding the second substrate to the substrate, it suppresses the peeling between the layer disposed on the outermost surface of the substrate bonded to the second substrate and the adhesive layer, and suppresses the peeling between the layer disposed on the outermost surface of the substrate and the substrate.

[0008] In view of the above points, this disclosure is made, and the object of this disclosure is to provide a display device and an electronic device that can suppress peeling between the layer disposed on the outermost surface of the substrate bonded to the second substrate and the adhesive layer in the event of deterioration of the second substrate and the adhesive layer for bonding the second substrate to the substrate, and suppress peeling of the layer disposed on the outermost surface of the substrate from the substrate.

[0009] Solution to the problem

[0010] This disclosure includes, for example, (1) a display device including a display area, the display device comprising: The substrate includes a first substrate; a light-emitting element having a structure in which a first electrode, an organic layer and a second electrode are sequentially stacked 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 on the outer side of the display area. The second substrate faces the surface in which the light-emitting element is formed in the surface of the substrate; and An adhesive layer is disposed between the substrate and the second substrate and bonds the substrate and the second substrate, wherein... In the plan view of the substrate, where the area from the inner edge of the peripheral light-shielding portion to the inner side is defined as the first region, and the area from the inner edge of the peripheral light-shielding portion to the outer side is defined as the second region, the substrate includes a first color filter disposed in the first region as a color filter and a second color filter disposed in the second region and forming the peripheral light-shielding portion. On the surface of the substrate, in the area that contacts the adhesive layer in the planar view of the substrate, and at least in the second region, surface irregularities are formed.

[0011] This disclosure may be (2) an electronic device including the display device according to (1) above. Attached Figure Description

[0012] [ Figure 1 ] Figure 1 A is a plan view illustrating one embodiment of the display device according to the first embodiment. Figure 1 B is magnified. Figure 1 A magnified plan view of a portion of region XS1 enclosed by dashed lines in area A. Figure 1 C is magnified. Figure 1 A magnified plan view of a portion of region XS2 enclosed by dashed lines in area A.

[0013] [ Figure 2 ] Figure 2 This is a cross-sectional view used to illustrate an example of a display device according to the first embodiment.

[0014] [ Figure 3 ] Figure 3 This is a plan view schematically illustrating an example of a display device according to a first variation of the first embodiment.

[0015] [ Figure 4 ] Figure 4 This is a schematic cross-sectional view of an example of a display device according to a first variation of the first embodiment.

[0016] [ Figure 5 ] Figure 5 This is a plan view illustrating an example of a display device according to a second variation of the first embodiment.

[0017] [ Figure 6 ] Figure 6 This is a cross-sectional view illustrating an example of a display device according to a second variation of the first embodiment.

[0018] [ Figure 7 ] Figure 7 A and Figure 7 B is a plan view illustrating an example of the surface irregularities of a display device according to a third variation of the first embodiment.

[0019] [ Figure 8 ] Figure 8 This is a plan view schematically showing an example of a display device according to a fourth variation of the first embodiment.

[0020] [ Figure 9 ] Figure 9 This is a cross-sectional view used to illustrate an example of a display device according to a fourth variation of the first embodiment.

[0021] [ Figure 10 ] Figure 10 This is a plan view schematically showing an example of a display device according to a fifth variation of the first embodiment.

[0022] [ Figure 11 ] Figure 11 This is a cross-sectional view used to illustrate an example of a display device according to a fifth variation of the first embodiment.

[0023] [ Figure 12 ] Figure 12 This is a plan view schematically showing an example of a display device according to a sixth variation of the first embodiment.

[0024] [ Figure 13 ] Figure 13 This is a plan view illustrating an example of a display device according to a sixth variation of the first embodiment.

[0025] [ Figure 14 ] Figure 14 This is a schematic plan view of an example of a display device according to the second embodiment.

[0026] [ Figure 15 ] Figure 15 This is a cross-sectional view schematically showing an example of a display device according to the second embodiment.

[0027] [ Figure 16 ] Figure 16 This is a plan view schematically showing an example of a display device according to a third embodiment.

[0028] [ Figure 17 ] Figure 17 This is a cross-sectional view schematically showing an example of a display device according to a third embodiment.

[0029] [ Figure 18 ] Figure 18 This is a cross-sectional view schematically illustrating an example of a display device according to a first variation of the third embodiment.

[0030] [ Figure 19 ] Figure 19This is a plan view schematically showing an example of a display device according to a third variation of the third embodiment.

[0031] [ Figure 20 ] Figure 20 This is a cross-sectional view schematically showing an example of a display device according to a third variation of the third embodiment.

[0032] [ Figure 21 ] Figure 21 This is a plan view schematically showing an example of a display device according to the fourth embodiment.

[0033] [ Figure 22 ] Figure 22 This is a cross-sectional view schematically showing an example of a display device according to the fourth embodiment.

[0034] [ Figure 23 ] Figure 23 This is a cross-sectional view schematically showing an example of a display device according to the fifth embodiment.

[0035] [ Figure 24 ] Figure 24 This is a cross-sectional view schematically showing an example of a display device according to the sixth embodiment.

[0036] [ Figure 25 ] Figure 25 This is a cross-sectional view schematically showing an example of a display device according to a first variation of the sixth embodiment.

[0037] [ Figure 26 ] Figure 26 This is a cross-sectional view schematically showing an example of a display device according to a first variation of the sixth embodiment.

[0038] [ Figure 27 ] Figure 27 This is a cross-sectional view schematically showing an example of a display device according to a second variation of the sixth embodiment.

[0039] [ Figure 28 ] Figure 28 This is a cross-sectional view schematically showing an example of a display device according to a third variation of the sixth embodiment.

[0040] [ Figure 29 ] Figure 29 This is a cross-sectional view schematically showing an example of a display device according to the seventh embodiment.

[0041] [ Figure 30 ] Figure 30 A, Figure 30 B and Figure 30 C is a partial cross-sectional view used to illustrate an example of a display device according to the seventh embodiment.

[0042] [ Figure 31 ] Figure 31 A and Figure 31 B is a diagram illustrating an application example of the display device.

[0043] [ Figure 32 ] Figure 32 This is a diagram illustrating an application example of a display device.

[0044] [ Figure 33 ] Figure 33 This is a diagram illustrating an application example of a display device.

[0045] [ Figure 34 ] Figure 34 This is a diagram illustrating an application example of a display device.

[0046] [ Figure 35 ] Figure 35 This is a diagram illustrating an application example of a display device.

[0047] [ Figure 36 ] Figure 36 A and Figure 36 B is a diagram illustrating an application example of the display device. Detailed Implementation

[0048] In the following description, examples, etc., according to this disclosure will be described with reference to the accompanying drawings. Note that the description will be given in the following order. In this specification and the drawings, components having substantially the same functional construction are indicated by the same reference numerals, and redundant descriptions will be omitted.

[0049] Note that the descriptions will be given in the following order.

[0050] 1. First Implementation Method

[0051] 2. Second Implementation Method

[0052] 3. Third Implementation Method

[0053] 4. Fourth Implementation Method

[0054] 5. Fifth Implementation Method

[0055] 6. Sixth Implementation Method

[0056] 7. Seventh Implementation Method

[0057] 8. Application Examples

[0058] The following description represents preferred embodiments of this disclosure, and the content of this disclosure is not limited to these embodiments. Furthermore, in the following description, directions such as front and back, left and right, and up and down are indicated for ease of description, but the content of this disclosure is not limited to these directions. Figure 1 A, Figure 2 In the example, we assume the Z-axis direction is vertical (the top is in the +Z direction and the bottom is in the -Z direction), the X-axis direction is front-back (the front is in the +X direction and the back is in the -X direction), and the Y-axis direction is left-right (the right is in the +Y direction and the left is in the -Y direction), and the description will be based on this. This also applies to... Figures 3 to 30 For ease of description, in Figure 1 The figures in Figures A and B show the relative size ratios of the layers' dimensions and thicknesses, without limiting the actual size ratios. The definitions and size ratios for these directions also apply to... Figure 1 B and Figures 2 to 30 The attached diagram.

[0059] [1 First Implementation]

[0060] [1-1 Construction]

[0061] Examples of display devices according to embodiments of the present disclosure include organic electroluminescent (EL) display devices. In the display device according to the first embodiment, such as... Figure 1 A, Figure 1 C and Figure 2 As shown, the case where the display device is an organic EL display device (hereinafter referred to as "display device 10") will be described as an example. Figure 1 A is a plan view showing an example of the display device 10. Figure 1 C is used for illustrative purposes. Figure 1 A diagram illustrating the layout of subpixels in a portion of region XS2 in region A. Figure 2 It schematically shows along Figure 1 A cross-sectional view of the longitudinal section intercepted by line AA in line A.

[0062] (Display area and outer area)

[0063] 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. The display surface D is defined as the surface from which light generated from the light-emitting elements 104 in the display device 10 is extracted to the outside. The display area 10A is the area in which pixels are disposed. The display area 10A is defined as the area in which light generated by a plurality of light-emitting elements 104 is emitted on the display surface D. The outer area 10B is defined as a predetermined area outside the outer peripheral edge of the display area 10A. (As an example...) Figure 1 In example A, display area 10A is formed as a rectangular area, and the area outside display area 10A, defined as a rectangular annular area, is the outer area 10B. The position of the outer edge of display area 10A is the position of the inner peripheral edge of outer area 10B, and display area 10A and outer area 10B are in contact with each other. In this disclosure, the direction away from the center of display area 10A along the planar direction of display area 10A is called the outer direction, and the direction opposite to the outer direction is called the inner direction. The direction from display area 10A toward outer area 10B is the outer direction.

[0064] It should be noted that, in the case where pads for connection to external devices are provided on the substrate 110 of the display device 10 as described later, the outer region 10B refers to the region outside the outer peripheral edge of the display region 10A, excluding the region designated for providing pads (pad forming region 10C). Figure 1 In the example of the display device 10 shown, the combined area of ​​the outer region 10B and the display region 10A is the area where the substrate 110 and the second substrate 112 face each other, and therefore, the outer region 10B is the area after removing the display region 10A from the area where the substrate 110 and the second substrate 112 face each other.

[0065] In the following description, the display device 10 is described as an example of displaying using a top emission method. The top emission method refers to a method in which the light-emitting element 104 is positioned closer to the light-emitting surface side 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 (+Z direction) from the first substrate 111 toward the light-emitting element 104 (described later) is the front surface side (upper surface side) direction 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, among the layers constituting the display device 10, the surface on the display surface side of the display area (display area 10A) of the display device 10 is referred to as the first surface (upper surface), and the surface on the back side of the display device 10 is referred to as the second surface (lower surface). Note that this does not exclude the case where the display device 10 according to this disclosure is a bottom emission type. The display device 10 can also be applied to a bottom emission type. In the bottom-emitting type, the light generated from the light-emitting element 104 is directed in the -Z direction and emitted to the outside.

[0066] Note that in this specification, when a surface is referred to as the surface of the substrate 110, unless otherwise stated, the surface refers to the upper surface (first surface). This also applies to other constructions of the substrate 110 (e.g., first upper surface covering layer, second upper surface covering layer, peripheral light-shielding portion, etc.).

[0067] (Type of subpixel)

[0068] exist Figure 1 A, Figure 1 C Figure 2 In the example shown, in display device 10, pixels are formed in display area 10A, and the pixels are constructed by combinations of subpixels. Furthermore, in the display device 10 shown in this example, red, green, and blue are defined as multiple color types corresponding to the emitted light color, and three types of subpixels 101R, 101G, and 101B are set as subpixels. Subpixels 101R, 101G, and 101B are respectively red, green, and blue subpixels, and are displayed as red, green, and blue respectively. However, Figure 1 The example provided is just one illustration, and the display device 10 is not limited to including multiple sub-pixels corresponding to the three color types. Furthermore, the wavelengths of light corresponding to each color type—red, green, and blue—can be specified, for example, as 610nm-650nm (red band), 510nm-590nm (green band), and 440nm-480nm (blue band), respectively. Note that the number of color types for sub-pixels is not limited to the three colors shown here, and can include two colors, four colors, etc. Moreover, the color types of sub-pixels are not limited to red, green, and blue, and can also include yellow, white, etc.

[0069] Furthermore, the layout of sub-pixels 101B, 101R, and 101G in the display device 10 is not particularly limited, but... Figure 1 In the example, within a predetermined area constituting the display surface, subpixels 101B, 101R, and 101G constituting a pixel are arranged in a delta shape, and each pixel is set in two dimensions. Note that... Figure 1 C is an example, and as described later, a triangle represents an arrangement of triangles drawn by connecting the centers of the subpixels that make up a pixel. In this disclosure, the layout of subpixels 101B, 101R, and 101G is not limited. Figure 1 Example A is a diagram used to illustrate the display area 10A of the display device 10.

[0070] In the description of this specification, without specifically distinguishing the types of sub-pixels 101R, 101G, and 101B, sub-pixels 101R, 101G, and 101B are collectively referred to as sub-pixels 101.

[0071] (Control of the light emission state of sub-pixels)

[0072] The display device 10 typically includes a control circuit (not shown), an H driver that drives the display surface in a horizontal direction, and a V driver (not shown) that drives (scans) the display surface in a vertical direction, and the control circuit controls the driving of the H driver and the V driver. When a two-dimensional matrix is ​​allocated to each sub-pixel 101, the H driver and the V driver control the light emission state of the sub-pixel 101 in column and row units, respectively.

[0073] like Figure 1 and Figure 2 As shown, the display device 10 includes a substrate 110 having a first substrate 111 and a light-emitting element 104, and includes a second substrate 112 and an adhesive layer 113 disposed between the substrate 110 and the second substrate 112. In the display device 10, surface irregularities 30 are formed on the substrate 110. Figure 1 In the diagram, for ease of description, the surface irregularities 30 are represented by shaded areas enclosed by dashed lines. This also applies to... Figure 3 , Figure 5 , Figure 8 , Figure 10 , Figure 14 , Figure 16 and Figure 19 Additionally, regarding the shaded lines in the plan view, in Figure 12 and Figure 13 In the diagram, the shaded area represents convex group 35. Figure 21 In the diagram, slot group 45 is represented by the shaded area.

[0074] (Surface irregularities)

[0075] On the surface of the substrate 110, surface irregularities 30 are formed in the area of ​​the substrate 110 that contacts the adhesive layer 113 (the area to be bonded). The surface irregularities 30 have surface protrusions 31 formed in a convex shape. Furthermore, in... Figure 1 B and Figure 2 In this example, the surface protrusion 30 is constructed from a combination of surface protrusions 31 and surface recesses 32 formed as concave shapes. Furthermore, in this example, the surface protrusion 30 has a plurality of surface protrusions 31, and surface recesses 32 formed as concave shapes are located between adjacent surface protrusions 31. The surface protrusion 30 may have a structure including a plurality of surface recesses 32 and surface protrusions 31 formed between adjacent surface recesses 32.

[0076] The layout of the surface protrusions and concave portions 30 is determined by the formation state of the surface protrusions 31 and surface concave portions 32. The surface protrusions 31 and surface concave portions 32 are parts constituting the unit shape (unit shape portion) of the surface protrusions and concave portions 30. The surface protrusions and concave portions 30 have a structure in which at least one type of unit shape portion is arranged in a predetermined layout. Figure 1 In example B, the surface protrusions 30 are formed with a triangular layout similar to that of the sub-pixels 101. The portion between adjacent surface protrusions 31 is defined as a surface recess 32. Note that... Figure 1 The arrangement of the surface protrusions 31 and surface recesses 32 shown in B is an example, and the formation state of the surface protrusions 31 and surface recesses 32 is not limited.

[0077] (The area where the surface is uneven)

[0078] like Figure 2 As shown, the surface irregularities 30 are formed at least in the second region AR2 in the plan view of the substrate 110. In the plan view of the substrate 110 (in... Figure 2 In the example, when viewing the substrate 110 with the Z-axis direction (vertical direction) as the viewing direction, the region inside the inner edge 23A of the peripheral light-shielding portion 23 of the substrate 110 is called the first region AR1, and the region outside the inner edge 23A of the peripheral light-shielding portion 23 of the substrate 110 is called the second region AR2. Therefore, as Figure 2 As shown, the surface irregularities 30 are formed at least in a predetermined portion of the region outside the inner edge 23A of the region forming the peripheral light-shielding portion 23, which is the second region AR2. Figure 2 In the example shown, the surface protrusion 30 is formed in the region directly above the peripheral light-shielding portion 23. Furthermore, as in this specification... Figure 2 As shown, the area where the protective layer 16 is formed in the second region AR2 is referred to as the first peripheral region SR1. The area in the second region AR2 excluding the first peripheral region SR1 (the area outside the first peripheral region SR1) is referred to as the second peripheral region SR2. Furthermore, as described in the sixth embodiment described later, the area outside the outer end portion 23B of the peripheral light-shielding portion 23 of the second region AR2 is referred to as the outer peripheral region NR. Additionally, the area outside the area where the first upper surface cover layer 28 is formed in the second region AR2 is referred to as the outer edge region ER.

[0079] The dimensions of the surface protrusions 31 and / or surface recesses 32 constituting the surface unevenness 30 are preferably smaller than the width (length in the inner-outer direction) of the auxiliary electrode 26 and the width of the peripheral light-shielding portion 23, as described later. For example, in the case where the surface protrusions 31 have a hemispherical shape in the surface unevenness 30, specifically, the diameter of the surface protrusions 31 can be between approximately 6 μm and 10 μm.

[0080] The surface irregularities 30 can be formed based on the processing of the surface (upper surface) of the substrate 110, or by forming an irregular structure in a layer below the surface of the substrate 110 (on the second surface side) and reflecting this irregular structure onto the surface of the substrate 110. Figure 2 In the example, as will be described later, a protrusion (first protrusion 33) is formed in the layer below the layer forming the surface of the substrate 110 (first upper surface cover layer 28), and a protrusion based on the first protrusion 33 (second protrusion 34) is formed in the layer forming the surface of the substrate 110 (second upper surface cover layer 29) as a surface protrusion 30. Note that Figure 2 The example is just one example, and the structure of the surface unevenness 30 is not limited.

[0081] The display device 10 according to the first embodiment may have Figure 2 The surface protrusion 31 and surface recess 32 shown are interchangeable. That is, the surface protrusion 31 can be changed to the surface recess 32, and the surface recess 32 can be changed to the surface protrusion 31 (not shown). Regarding the interchangeability of the surface protrusion 31 and surface recess 32, this also applies to the first to sixth modifications described later. Note that when the surface protrusion 31 and surface recess 32 are interchanged, the concave shape and convex shape are also interchanged in 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 later.

[0082] (Adhesive layer)

[0083] The adhesive layer 113 contacts both components of the substrate 110 and the second substrate 112, and bonds the surface of the substrate 110 on the display surface D side (the first surface) to the second substrate 112. Furthermore, the adhesive layer 113 can serve as a filler layer to fill the gap between the substrate 110 and the second substrate 112. The adhesive layer 113 contacts the surface irregularities 30. The adhesive layer 113 typically comprises a resin material. As the resin material constituting the adhesive layer 113, for example, a resin selected from the group of organic resins such as acrylic resins, epoxy resins, polyurethane resins, and polyolefin resins can be suitably used, and a transparent resin material is preferred. The resin constituting the adhesive layer 113 preferably comprises a material that is softer than the second substrate 112 and has a lower glass transition point.

[0084] (Second substrate)

[0085] The second substrate 112 is a substrate opposite to the first substrate 111. In the display device 10, the second substrate 112 is configured to face the surface of the substrate 110 where the light-emitting element 104 is formed. The second substrate 112 can protect the display surface D side of the substrate 110. Furthermore, the second substrate 112 can perform optical functions. Figure 1 In the example of the first embodiment shown, the polarizing plate 114 is configured as the second substrate 112. Note that this is an example, and the second substrate 112 is not particularly limited, as long as it is bonded to the substrate 110 via the adhesive layer 113 and can function to protect the display surface D of the substrate 110. Examples of the second substrate include glass substrates, resin substrates, etc. Furthermore, the second substrate includes thin films, including resin films, polarizing films, etc.

[0086] Next, we will describe the layer structure of the base 110 and examples of the contents of each layer.

[0087] (Matrix)

[0088] exist Figure 2 In the example of the display device 10 shown, the substrate 110 includes a first substrate 111 and a light-emitting element 104. Here, as 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 stacked sequentially.

[0089] (First substrate)

[0090] The first substrate 111 includes a substrate body 11 and an inorganic insulating layer 12.

[0091] (Substrate body)

[0092] The substrate body 11 may comprise, for example, glass or resin with low permeability to moisture and oxygen, or may comprise semiconductors that are easy to form transistors, etc. Specifically, the substrate body 11 may be a glass substrate, a semiconductor substrate, a resin substrate, etc.

[0093] In the first substrate 111, as Figure 2 As shown, an inorganic insulating layer 12 is disposed on the substrate body 11, and various circuits for driving the plurality of light-emitting elements 104 are disposed within the inorganic insulating layer 12. Examples of the various circuits include driving circuits that control the light-emitting elements 104, and power supply circuits that supply power to the plurality of light-emitting elements 104 (neither shown in the figures). The inorganic insulating layer 12 restricts the exposure of the various circuits to the outside. Furthermore, the first substrate 111 is provided with wiring for connecting the light-emitting elements 104, circuits disposed on the substrate body 11, etc., to the first electrode 13, etc. Examples of the wiring include a plurality of contact plugs.

[0094] (Inorganic insulating layer)

[0095] The inorganic insulating layer 12 may comprise, for example, an organic or inorganic material. The organic material may comprise, for example, at least one of polyimide and acrylic resin. The inorganic material may comprise, for example, at least one of silicon oxide, silicon nitride, silicon oxynitride, and aluminum oxide.

[0096] (Light-emitting element)

[0097] Multiple light-emitting elements 104 are disposed on the first surface of the inorganic insulating layer 12. Figure 1 A, Figure 1 C Figure 2 In the example, the light-emitting element 104 is an organic electroluminescent element (organic EL element). The light-emitting element 104 is disposed in the display area 10A in the planar view of the substrate 110. As a plurality of light-emitting elements 104, each light-emitting element is provided with a color corresponding to the color type of the sub-pixel 101, which is the color of the light emitted from the light-emitting surface (as the emitted color). For example, light-emitting elements 104R, 104G, and 104B are formed in sub-pixels 101R, 101G, and 101B, respectively. Furthermore, the plurality of light-emitting elements 104 have a layout corresponding to the arrangement of sub-pixels 101 for each color type. Note that in this specification, the term light-emitting element 104 is used without specifically distinguishing the types such as light-emitting elements 104R, 104G, and 104B.

[0098] The light-emitting element 104 has a stacked structure in which a first electrode 13, an organic layer 14, and a second electrode 15 are stacked in sequence. The first electrode 13, the organic layer 14, and the second electrode 15 are stacked in this order from the first substrate 111 side in the direction (+Z direction) from the second surface toward the first surface.

[0099] (First electrode)

[0100] Multiple first electrodes 13 are disposed on the first surface side of the first substrate 111. Figure 2 In the example, the first electrode 13 is the anode electrode.

[0101] The first electrode 13 includes at least one of a metal layer and a metal oxide layer. The first electrode 13 may be composed of a single-layer film of a metal layer or a metal oxide layer, or a stacked film of a metal layer and a metal oxide layer.

[0102] For example, the metal layer contains at least one metallic 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 of these metallic elements as a constituent element of the alloy. Specific examples of alloys include aluminum alloys and silver alloys. Specific examples of aluminum alloys include AlNd and AlCu.

[0103] The metal oxide layer comprises at least one of, for example, a mixture of indium oxide and tin oxide (ITO), a mixture of indium oxide and zinc oxide (IZO), and titanium oxide (TiO).

[0104] exist Figure 2In this configuration, the first electrode 13 is electrically separated for each sub-pixel 101. That is, a plurality of first electrodes 13 are disposed on the first surface side of the first substrate 111 and are disposed for each sub-pixel 101.

[0105] Furthermore, preferably, an insulating layer is formed between adjacent first electrodes 13. Figure 1 C and Figure 2 In the example, an inorganic insulating layer 12 is formed between adjacent first electrodes 13. Figure 1 C Figure 2 In other examples, the inorganic insulating layer 12 electrically separates each first electrode 13 for each light-emitting element 104 (i.e., each sub-pixel 101). Furthermore, as... Figure 1 As shown in Figure C, an opening 12A is formed on the first surface side of the inorganic insulating layer 12. The first surface of the first electrode 13 (the surface facing the second electrode 15) is exposed through the opening 12A of the inorganic insulating layer 12, and the portion of the first electrode 13 exposed through the opening 12A faces the organic layer 14 described later, while avoiding insertion into the inorganic insulating layer 12. Note that the inorganic insulating layer 12 can not only be formed between adjacent first electrodes 13, but can also straddle the edge of the first electrode 13. The edge of each first electrode 13 is defined by a portion extending from the outer periphery of the first electrode 13 to a predetermined position near the center side of the first electrode 13. In this case, the inorganic insulating layer 12 also has an opening 12A, and the first surface of the first electrode 13 is exposed through the opening 12A.

[0106] (Light-emitting element)

[0107] In the display device 10, a plurality of light-emitting elements 104 are disposed above the first surface of the first substrate 111. Figure 1 In example C, multiple light-emitting elements 104 are formed, with individual light-emitting elements 104R, 104G, and 104B corresponding to individual sub-pixels 101R, 101G, and 101B. In this specification, the term light-emitting element 104 is used without specifically distinguishing between types such as light-emitting elements 104R, 104G, and 104B. The multiple light-emitting elements 104 are arranged in a two-dimensional striped pattern.

[0108] (Organic layer)

[0109] Organic layer 14 is an organic light-emitting layer disposed between the first electrode 13 and the second electrode 15. Organic layer 14 is configured as a layer shared by sub-pixels 101. Figure 1In example C, organic layer 14 is shared by sub-pixels 101R, 101G, and 101B, and is capable of emitting white light. However, this does not preclude the emission color of organic layer 14 from being non-white, and it can be colors such as red, blue, and green. That is, the emission color of organic layer 14 can be, for example, any of white, red, blue, and green.

[0110] 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. The electron injection layer may be disposed between the electron transport layer and the second electrode 15. The electron injection layer is used to improve 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.

[0111] The hole injection layer is a buffer layer used to improve the hole injection efficiency into the light-emitting layer and suppress leakage. The hole transport layer is used to improve the hole transport efficiency of the light-emitting layer. The electron transport layer is used to improve the electron transport efficiency into the light-emitting layer.

[0112] The luminescent layer generates light by applying an electric field to cause electrons and holes to recombine. The luminescent layer is an organic compound layer containing organic light-emitting materials.

[0113] (Second electrode)

[0114] The second electrode 15 is disposed on the upper side of the organic layer 14. The portion of the second electrode 15 corresponding to the sub-pixel 101 (the portion corresponding to the light-emitting element 104) is positioned facing the first electrode 13. The second electrode 15 is configured as an electrode shared by multiple sub-pixels 101 (sub-pixels 101R, 101G, and 101B). An electrode layer shared by multiple sub-pixels 101 is formed as the second electrode 15. The second electrode 15 is a cathode electrode. Preferably, the second electrode 15 is a transparent electrode that is transparent to light generated in the organic layer 14. The transparent electrode referred to herein includes transparent electrodes comprising a transparent conductive layer and transparent electrodes comprising a stacked structure having a transparent conductive layer and a semi-transparent reflective layer.

[0115] As a transparent conductive layer, a transparent conductive material with good optical transparency and a low work function is appropriately used. The transparent conductive layer may contain, for example, a metal oxide. Specifically, examples of materials for the transparent conductive layer may include materials comprising 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).

[0116] The semi-transparent reflective layer may be composed of, for example, a metallic layer. Specifically, examples of materials for the semi-transparent reflective layer may include materials containing at least one metallic element selected from the group consisting of magnesium (Mg), aluminum (Al), silver (Ag), gold (Au), and copper (Cu). The metallic layer may contain at least one of the aforementioned metallic elements as a constituent element of an alloy. Specific examples of alloys include MgAg alloys and AgPdCu alloys.

[0117] (Auxiliary electrode)

[0118] In the display device 10, the auxiliary electrode 26 is preferably disposed approximately outside the display area 10A (in the outer area 10B). The auxiliary electrode 26 relays the electrical connection between the various circuits formed on the first substrate 111 side and the second electrode 15.

[0119] The material of the auxiliary electrode 26 is not particularly limited, as long as it is a conductive material, and for example, a metal can be used. Figure 2 As shown, the second electrode 15 extends from the display area 10A to its outer side (outer area 10B) and is connected to the auxiliary electrode 26, so that an electrical connection can be made between the second electrode 15 and the auxiliary electrode 26.

[0120] In the plan view of the display area 10A, the auxiliary electrode 26 is formed in a ring shape to generally surround the periphery of the display area 10A. However, this is an example, and the arrangement of the auxiliary electrode 26 is not limited to a ring shape. The auxiliary electrode 26 can generally be arranged directly below the peripheral light-shielding portion 23 described later, or the entire auxiliary electrode 26 can be arranged at a position offset from directly below the peripheral light-shielding portion 23.

[0121] (Protective layer)

[0122] In the display device 10, a protective layer 16 is formed to cover the forming surface side (first surface) of the light-emitting element 104. The first surface of the light-emitting element 104 is difficult to contact with external air and inhibits moisture from entering the light-emitting element 104 from the external environment.

[0123] The protective layer 16 comprises an insulating material. For example, a thermosetting resin can be used as the insulating material. Alternatively, the insulating material can be SiO, SiON, AlO, TiO, etc. In this case, examples of the protective layer 16 include CVD films containing SiO, SiON, etc., and ALD films containing AlO, TiO, SiO, etc. Note that CVD film refers to a film formed using chemical vapor deposition. ALD film refers to a film formed using atomic layer deposition. The protective layer 16 can comprise a single layer or may have a structure with multiple stacked layers. Figure 2In the example, 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 each be a layer containing a predetermined insulating material, or the first protective layer 16A and the second protective layer 16B may each include a CVD film and an ALD film, respectively.

[0124] The protective layer 16 covers the upper surface (first surface) of the second electrode 15, and further covers the auxiliary electrode 26. Figure 2 In the example, a first protective layer 16A and a second protective layer 16B are formed in the display area 10A and extend extensively into a portion of the outer area 10B. Figure 2 In the example, the first protective layer 16A and the second protective layer 16B are formed on the outside of the peripheral light-shielding portion 23 (on the side away from the display area 10A).

[0125] In this specification, as well as Figure 2 As shown in the plan view of the substrate 110, the outer ends of the peripheral light-shielding portion 23 and the auxiliary electrode 26 are located in the first peripheral region SR1. As described above, in the region outside the inner end of the peripheral light-shielding portion 23 (the second region AR2), the first peripheral region SR1 is the region where the protective layer 16 is formed.

[0126] (Planarization layer)

[0127] A planarization layer 17 is formed on the protective layer 16. The planarization layer 17 is formed to cover the upper surface side (first surface) of the second protective layer 16B.

[0128] The planarization layer 17 can be a layer containing inorganic materials or a layer containing organic materials. Examples of inorganic materials include the same materials as the protective layer 16. Examples of organic materials include resin materials. The planarization layer 17 improves the flatness of the surface (upper surface) of the substrate used to form the color filter 18, as described later. Furthermore, because the planarization layer 17 is provided, together with the protective layer 16, the first surface of the light-emitting element 104 is less likely to come into contact with external air, and moisture can be prevented from entering the light-emitting element 104 from the external environment.

[0129] (Color filter)

[0130] In the display device 10, a color filter 18 is disposed on top of the protective layer 16. Figure 2 In the example, the color filter 18 is disposed 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 a predetermined color type of light from the visible light generated by the light-emitting element 104.

[0131] In the display device 10, on the first surface side (upper side, +Z direction side) of the planarization layer 17, as described above, a first color filter 19 and a second color filter 20, serving as color filters 18, are provided. As the color filter 18, an on-chip color filter (OCCF) can be cited as an example. As the material for the color filter 18, organic materials can be cited for both the first color filter 19 and the second color filter 20.

[0132] (First color filter)

[0133] In the plan view of the substrate 110, the first color filter 19 is disposed in the region (first region AR1) inside the inner edge 23A of the peripheral light-shielding portion 23, which will be described later. That is, the first color filter 19 is preferably generally formed in the display area 10A. Furthermore, the first color filter 19 is provided according to the color type of the sub-pixel 101. Figure 1 C and Figure 2 In the example, the first color filter 19 includes a red color filter (red filter 19R), a green color filter (green filter 19G), and a blue color filter (blue filter 19B). Color filters corresponding to the color types of sub-pixels 101 are disposed at positions corresponding to the color type of each sub-pixel 101. Specifically, the red filter 19R, green filter 19G, and blue filter 19B are disposed in sub-pixels 101R, 101G, and 101B, respectively. Because the first color filter 19 is disposed in the display device 10, light corresponding to the color types of sub-pixels 101R, 101G, and 101B can be effectively extracted to the outside.

[0134] (Second color filter)

[0135] The second color filter 20 is formed outside the first color filter 19, which is disposed on the outermost side. Figure 2 In this configuration, a second color filter 20 is typically formed in the outer region 10B. The second color filter 20 is formed to cover the upper side (+Z direction side) of the auxiliary electrode 26. The second color filter 20 serves as a peripheral light-shielding portion 23. Figure 2 In the example, the second color filter 20 has a structure in the thickness direction (Z-axis direction) of the substrate 110 where a red color filter (red filter 20R) and a blue color filter (blue filter 20B) are stacked. The red filter 20R can be formed simultaneously using the same material as the red filter 19R. The blue filter 20B can be integrally formed simultaneously using the same material as the blue filter 19B. Figure 2In the example, the second color filter 20 may also include a green color filter (green filter 20G) in a structure that stacks a red color filter (red color filter 20R) and a blue color filter (blue color filter 20B).

[0136] For example, the red filter 20R can be categorized as a filter that readily allows light of the red wavelength band in the visible light spectrum to pass through while readily absorbing light of other color wavelength bands. Similarly, the blue filter 20B can be categorized as a filter that readily allows light of the blue wavelength band in the visible light spectrum to pass through while readily absorbing light of other color wavelength bands. By stacking the red filter 20R and the blue filter 20B in this manner, light blocking across a wide range of wavelength bands can be achieved. Therefore, in the light generated by the light-emitting element 104 in the display area 10A, light propagating from the outer region 10B in an oblique direction is generally suppressed from passing through the second color filter 20. Thus, the effect of suppressing light leakage from the second color filter 20 is achieved. Light from the outside of the display device 10 toward the first substrate 111 is blocked by the second color filter 20, and the intrusion of external light is suppressed.

[0137] As described above, the second color filter 20 has light-shielding properties in the state where the red filter 20R and the blue filter 20B are stacked, and the multilayer structure of the red filter 20R and the blue filter 20B serves as a light-shielding filter. Note that in Figure 2 In the example shown, the innermost end of the second color filter 20 is in contact with the outermost end of the first color filter 19.

[0138] (Surrounding shade area)

[0139] 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 light generated from the light-emitting element from escaping from the display surface side. The peripheral light-shielding portion 23 is a portion that restricts the passage of visible light at least more than the first color filter 19, and is not limited to a portion that completely blocks the propagation of light. Figure 2In the example shown, as described above, the peripheral light-shielding portion 23 includes a second color filter 20. Furthermore, in this example, the inner edge 23A of the peripheral light-shielding portion 23 is located at the boundary between the outer region 10B and the display region 10A. In the plan view of the substrate 110, the peripheral light-shielding portion 23 is disposed in the outer region 10B. By providing the peripheral light-shielding portion 23, light leakage from the outer periphery of the display region 10A to the outer region 10B due to reflection, diffusion, etc., of light generated by the light-emitting element 104 in the display region 10A can be suppressed. Furthermore, because the peripheral light-shielding portion 23 is provided, light reflected from the auxiliary electrode 26 with high reflectivity is prevented from illuminating the area from the outer periphery of the display region 10A to the outer region 10B, making the display on the display surface D easily identifiable.

[0140] (Upper surface covering layer)

[0141] In the plan view of the substrate 110, the display device 10 has an upper surface cover layer at least above the first color filter 19 and the peripheral light-shielding portion 23. Furthermore, the display device 10 includes a first upper surface cover layer 28 and a second upper surface cover layer 29 as upper surface cover layers.

[0142] (First upper surface covering layer)

[0143] In the plan view of the substrate 110, the first upper surface covering layer 28 covers the first color filter 19 and the peripheral light-shielding portion 23. Figure 2 In the example, the first upper surface covering layer 28 covers the outer end face of the protective layer 16 and the outer end face of the planarization layer 17, and is formed at a predetermined position in the outer region (second peripheral region SR2) of the outer end of the protective layer 16.

[0144] The first upper surface covering layer 28 is preferably an organic covering layer. The material of the organic covering layer can be an organic resin. Examples of organic resins used to form the organic covering layer include resins used to form the planarization layer 17 described above and resins used to form the lens 22 shown in the second embodiment described later. The organic covering layer can be formed by curing a coating film coated with a predetermined organic resin to cover the surfaces of the first color filter 19 and the peripheral light-shielding portion 23.

[0145] (First concave-convex part)

[0146] A first protrusion 33 is formed on the surface (first surface) of the first upper surface cover layer 28. In the plan view of the substrate 110, in the first upper surface cover layer 28, the first protrusion 33 is formed on the surface facing the second upper surface cover layer 29 and in the second region AR2. Figure 2In the example shown, the first protrusion 33 is formed in both the first peripheral region SR1 and the second peripheral region SR2 in the second region AR2. However, this is an example, and the first protrusion 33 may also be formed in either the first peripheral region SR1 or the second peripheral region SR2 in the second region AR2.

[0147] The first convex-concave portion 33 has a first convex-concave shape CS1. The first convex-concave shape CS1 is a shape determined based on various conditions such as the layout of the first convex-concave portion 33 and the dimensions of the three-dimensional structure constituting the first convex-concave portion 33. The first convex-concave portion 33 is constructed by combining a first convex portion 33A, which is a portion having a convex shape, and a first concave portion 33B, which is a portion having a concave shape. The layout of the first convex-concave portion 33 refers to the arrangement of the first convex portion 33A and the first concave portion 33B. The dimensions of the three-dimensional structure constituting the first convex-concave portion 33 refer to the dimensions of the first convex portion 33A and the first concave portion 33B.

[0148] There are no particular limitations on the method for forming the first uneven portion 33. For example, the first uneven portion 33 can be specifically formed by applying the method for forming the lens 22 described later to the surface of the organic coating layer to be the first upper surface coating layer 28. As a method for forming the lens 22, on-chip lens (OCL) forming methods can be cited. Examples of OCL forming methods include melting methods and etching-back methods.

[0149] (Second upper surface covering layer)

[0150] The second upper surface cover layer 29 is a layer that forms the surface of the substrate 110 and contacts the adhesive layer 113. The second upper surface cover layer 29 is formed to cover the surface of the first upper surface cover layer 28 (the first surface). Furthermore, as... Figure 2 As shown in the example, from the viewpoint of inhibiting the intrusion of moisture from the outside, the second upper surface covering layer 29 is preferably formed to cover the outer end face of the first upper surface covering layer 28. When the region outside the formation area of ​​the first upper surface covering layer 28 in the second region AR2 is defined as the outer edge region ER, the second upper surface covering layer 29 extends to the outer edge region ER.

[0151] The second upper surface covering layer 29 is preferably an inorganic covering layer. The material of the inorganic covering layer can be an inorganic material. Examples of inorganic materials include the inorganic insulating materials used to form the protective layer 16 described above. Examples of inorganic insulating materials include SiO, SiON, AlO, and TiO.

[0152] There are no particular limitations on the method used to form the second upper surface capping layer 29, and any method suitable for forming an inorganic capping layer as the second upper surface capping layer 29 can be used. As a method for forming the inorganic capping layer, a method for forming the protective layer 16, such as chemical vapor deposition (CVD), can be applied.

[0153] In the second upper surface cover layer 29, in the plan view of the substrate 110, a second protrusion 34 is formed on the surface of the second upper surface cover layer 29 facing the adhesive layer 113 (first surface) and in the second region AR2. Figure 2 In the example shown, the second protrusion 34 is formed in the same region as the first protrusion 33, that is, in both the first peripheral region SR1 and the second peripheral region SR2 of the second region AR2. However, this is an example, and the second protrusion 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 protrusion 34 is constructed by a combination of a second protrusion 34A, which is a portion having a convex shape, and a second concave portion 34B, which is a portion having a concave shape.

[0154] The second uneven portion 34 has a second uneven shape CS2. The second uneven shape CS2 is based on the shape of the first uneven shape CS1. When the second upper surface cover layer 29 is formed to cover the first uneven portion 33, the second upper surface cover layer 29 is formed such that the 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 cover layer 29. In this case, the uneven shape appearing on the surface (upper surface) of the second upper surface cover layer 29 based on the first uneven shape CS1 of the first uneven portion 33 is the second uneven shape CS2. Furthermore, in the second upper surface cover layer 29, the portion forming the second uneven shape CS2 is the second uneven portion 34.

[0155] 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 constituting the second concave-convex portion 34.

[0156] The layout of the second convex and concave portions 34 represents the arrangement of the second convex portion 34A and the second concave portion 34B. The dimensions of the three-dimensional structure constituting the second convex and concave portions 34 represent the dimensions of the second convex portion 34A and the second concave portion 34B.

[0157] In the display device 10 according to the first embodiment, the surface irregularities 30 of the substrate 110 include a second irregularity 34.

[0158] (pad)

[0159] The pad 25 (electrode pad) is preferably disposed in the pad forming region 10C of the first substrate 111. The pad 25 may be a connection terminal for electrically connecting the display device 10 to an external device or the like. The pad 25 may contain a material similar to the first electrode 13. For example, the connection terminal of a flexible circuit board (FPC) (not shown) may be electrically connected to the pad 25. As a connection structure between the pad 25 and the connection terminal of the FPC, a connection structure through an anisotropic conductive film (ACF) can be cited as an example.

[0160] [1-2 Functions and Effects]

[0161] In a display device having a structure in which a second substrate is bonded to a substrate including a first substrate and a light-emitting element via an adhesive layer, when deformation or shape change occurs in the adhesive layer or the second substrate due to deterioration of the adhesive layer or the second substrate, there is a problem that delamination occurs between the adhesive layer and the surface of the substrate, and the layer forming the surface of the substrate follows the adhesive layer and peels off from the substrate.

[0162] In existing display devices, light-emitting elements are arranged on a substrate for each sub-pixel, and auxiliary electrodes indicating the energized state of the auxiliary light-emitting elements are provided. A protective layer or similar material is also provided to protect the light-emitting elements and auxiliary electrodes from moisture and other influences. Therefore, in existing display devices, the surface of the substrate is made as flat as possible by providing a protective layer or similar material, or even when the substrate surface is tilted, a relatively gentle slope is formed. Consequently, for example, when deformation occurs in the second substrate, the adhesive layer deforms accordingly, and there is a problem that peeling may occur between the substrate and the adhesive layer due to the deformation of the adhesive layer. Peeling between the substrate and the adhesive layer is particularly prone to occur near the ends of the adhesive layer, and it is especially necessary to suppress peeling between the substrate and the adhesive layer near the ends of the adhesive layer.

[0163] In the display device 10 according to the first embodiment, since the surface irregularities 30 are formed on the substrate 110, the contact area between the adhesive layer 113 and the surface of the substrate 110 is increased. Furthermore, since the surface irregularities 30 are formed in the second region AR2, it is particularly easy to increase the contact area in the outer region 10B. Therefore, in the display device 10 according to the first embodiment, peeling between the adhesive layer 113 and the substrate 110 in the outer region 10B, where peeling may begin, can be suppressed.

[0164] [1-3 Variations]

[0165] (First variation)

[0166] In the display device 10 according to the first embodiment, such as Figure 3 and Figure 4 As shown, a surface irregularity 30 is formed in the first peripheral region SR1, and the formation of a surface irregularity in the second peripheral region SR2 may be omitted. This configuration is referred to as a first variation of the first embodiment. Figure 3 and Figure 4 The diagram schematically shows a plan view and a cross-sectional view of an example of a display device 10 according to a first variation of the first embodiment. Furthermore, Figure 4 It is schematically shown along Figure 3 A cross-sectional view of the longitudinal section taken by line BB in the diagram. Except that the first uneven portion 33 is formed only in the first peripheral region SR1, and the second uneven portion 34 is formed only in the first peripheral region SR1, the display device 10 according to the first modification of the first embodiment can be implemented with the same structure as the display device 10 according to the first embodiment described above. However, from the viewpoint of increasing the adhesive area between the substrate 110 and the adhesive layer 113, it is more preferable to form the surface uneven portion 30 in both the first and second peripheral regions. This also applies to the second modification described below.

[0167] (Second variation)

[0168] In the display device 10 according to the first embodiment, such as Figure 5 and Figure 6 As shown, the surface unevenness 30 is formed in the second peripheral region SR2, and the formation of the surface unevenness 30 in the first peripheral region SR1 may be omitted. This configuration is referred to as a second variation of the first embodiment. Figure 5 and Figure 6 These are schematic plan and cross-sectional views illustrating an example of a display device 10 according to a second variation of the first embodiment. Furthermore, Figure 6 It is an illustrative representation along Figure 5 A cross-sectional view of the longitudinal section intercepted by line CC. Except that the first uneven portion 33 is formed only in the second peripheral region SR2 and the second uneven portion 34 is formed only in the second peripheral region SR2, the display device 10 of the second variation according to the first embodiment can be implemented by the same structure as the display device 10 according to the first embodiment described above.

[0169] (Third variation)

[0170] In the display device 10 according to the first embodiment, the arrangement of the surface protrusions 30 is not limited to the case where the surface protrusions 31 have a curved profile shape such as a circle in the plan view of the substrate 110, such as... Figure 1 As shown in example B. For example, as Figure 7 A and Figure 7As shown in B, the surface protrusion 31 may have a polygonal shape, such as a strip or a rectangle. This form is referred to as a third variation of the first embodiment. Figure 7 A and Figure 7 B is a plan view and a cross-sectional view schematically showing an example of the layout of the surface irregularities 30 in the display device 10 of the third variation of the first embodiment. Figure 7 A and Figure 7 B illustrates a third variation of the first embodiment. Figure 1 B is the same view.

[0171] exist Figure 7 In the example shown in A, the surface protrusions 31 are formed in a rectangular shape, and the dimensions of the surface protrusions 31 are uniform. The surface protrusions 31 are arranged in a long strip shape, such that the centers of adjacent surface protrusions 31 are aligned in a straight line from the peripheral light-shielding portion 23 outwards. However, this is just an example. Furthermore, as... Figure 7 As shown in B, the surface protrusion 31 can have various sizes. Figure 7 A and Figure 7 In B, the portion between adjacent surface protrusions 31 is a surface recess 32.

[0172] (Fourth variation)

[0173] In the display device 10 according to the first embodiment, such as Figure 8 and Figure 9 As shown in the example, multiple unit-shaped portions forming at least one of the surface protrusions and surface recesses of the surface unevenness 30 can be provided, and multiple unit-shaped portions of at least one type can be formed concentrically at intervals in the outer direction of the peripheral light-shielding portion 23 in the region outside the peripheral light-shielding portion 23 (second region AR2). This configuration is referred to as a fourth variation of the first embodiment. Figure 8 This is a plan view schematically showing an example of a display device 10 according to a fourth variation of the first embodiment. Figure 9 This is a schematic cross-sectional view illustrating an example of a display device 10 according to a fourth variation of the first embodiment. Furthermore, Figure 9 It schematically shows along Figure 8 A cross-sectional view of the longitudinal section intercepted by line DD in the diagram. Figure 8 and Figure 9 In the example, the plurality of surface protrusions 31 of the surface protrusions 30 have a rectangular ring shape in the plan view of the substrate 110, and are spaced apart in a direction away from the inner edge of the peripheral light-shielding portion 23. At this time, the space between adjacent surface protrusions 31 is a surface recess 32.

[0174] (Variation Example 5)

[0175] In the display device 10 according to the first embodiment, such as Figure 10 and Figure 11 As shown in the example, in the region outside the peripheral light-shielding portion 23 (second region AR2), at least one of the surface protrusions 31 and surface recesses 32 forming the surface unevenness 30 can be alternately arranged at intervals along the direction of the inner edge of the peripheral light-shielding portion 23 (along the direction of the boundary between the first region and the second region). This configuration is referred to as the fifth variation of the first embodiment. Figure 10 This is a plan view schematically showing an example of a display device 10 according to a fifth variation of the first embodiment. Figure 11 This is a schematic cross-sectional view illustrating an example of a display device 10 according to a fifth modification of the first embodiment. Furthermore, Figure 11 It is schematically shown along Figure 10 A cross-sectional view of the longitudinal section intercepted by line EE. Figure 10 and Figure 11 In this example, the surface protrusions 31 of the surface unevenness 30 have a rectangular outline shape in the plan view of the substrate 110 and are spaced apart along the direction of the inner edge of the peripheral light-shielding portion 23. At this time, the space between adjacent surface protrusions 31 is a surface recess 32. Therefore, in this example, the surface unevenness 30 is formed with surface protrusions 31 and surface recesses 32 arranged alternately.

[0176] (Sixth variation)

[0177] In the display device 10 according to the first embodiment, such as Figure 12 and Figure 13 As shown in the example, at least one of the surface protrusions 31 and surface recesses 32 can be provided with multiple unit shape portions, and multiple unit shape groups including multiple unit shape portions can be provided. At least one type of unit shape group can be arranged concentrically in the plan view of the base 110. This form is referred to as the sixth variation of the first embodiment. Figure 12 and Figure 13 This is a plan view schematically illustrating an example of a display device 10 according to a sixth variation of the first embodiment. Figure 12 In the example, as shown in the fourth variation of the first embodiment described above, the protrusion group 35 having a plurality of surface protrusions 31 is formed into a rectangular ring shape, and in the region outside the inner edge of the peripheral light-shielding portion 23 (second region AR2), a plurality of protrusion groups 35 are arranged concentrically at intervals in the outer direction of the peripheral light-shielding portion 23. Figure 13 In the example, as shown in the fifth variation of the first embodiment described above, the protrusion group 35 including a plurality of surface protrusions 31 is formed into a rectangle, and the plurality of protrusion groups 35 are spaced apart in the direction along the inner edge of the peripheral light-shielding portion 23.

[0178] [2 Second Implementation]

[0179] [2-1 Construction]

[0180] like Figure 14 and Figure 15 As shown, in the display device 10 according to the second embodiment, the first uneven portion 33 of the first upper surface cover layer 28 and the second uneven portion 34 of the second upper surface cover layer 29 are formed in the second region AR2 and the first region AR1, and the surface uneven portion 30 is also formed in the first region AR1 and the second region AR2. Apart from these structures, the other structures of the display device according to the second embodiment are similar to those of the first embodiment. Therefore, in the second embodiment, the structures of the parts other than the structures of the first upper surface cover layer 28 and the second upper surface cover layer 29 are the same as those of the first embodiment. Figure 14 This is a schematic plan view of an example of a display device according to the second embodiment. Figure 15 This is a schematic cross-sectional view illustrating an example of a display device according to the second embodiment. Furthermore, Figure 15 It is schematically shown along Figure 14 A cross-sectional view of the longitudinal section intercepted by line FF in the diagram. In the description of the second embodiment, detailed descriptions of the same structure as in the first embodiment will be omitted.

[0181] (First upper surface covering layer)

[0182] In the display device according to the second embodiment, the first upper surface cover layer 28 is an organic cover layer, and the first uneven portion 33 of the first upper surface cover layer 28 is formed in the first region AR1 and the second region AR2.

[0183] (lens)

[0184] In the first upper surface covering layer 28, the lens 22 is preferably formed in the first region AR1, and the lens 22 is preferably also used as at least a part of the first concave-convex portion 33.

[0185] In the first region AR1, the lens 22 is disposed on the surface (first surface) of the first upper surface cover layer 28 in a layout corresponding to each sub-pixel 101.

[0186] The shape of the lens 22 in the first upper surface cover layer 28 is not particularly limited. As the lens 22, a lens with a convex curved surface on the first surface side (so-called a convex lens) can be listed. The lens 22 is preferably an on-chip lens (OCL).

[0187] OCL can be formed by methods such as melting, etching back, and combining melting and etching back. Specifically, for example, an organic resin for forming the first upper surface cover layer 28 is prepared, and a coating film of the organic resin is cured by spin coating or the like to form an organic material layer. Photolithography or etching is then applied to the organic material layer, thereby imparting a three-dimensional shape for forming the lens 22 onto the surface (first surface) of the organic material layer. The three-dimensional shape for forming the lens 22 is formed at least in the display area 10A and is formed according to the layout of the sub-pixels 101. Thus, the first region AR1 of the first upper surface cover layer 28 is formed with the three-dimensional shape to become the lens 22. The three-dimensional shape corresponding to the lens 22 is the first protrusion 33A constituting the first concave-convex portion 33 in the first upper surface cover layer 28. That is, the lens 22 also serves as at least a portion of the first concave-convex portion 33.

[0188] Note that, as described in the first embodiment, the first uneven portion 33 is formed in the second region AR2 in the first upper surface cover layer 28. From the viewpoint of suppressing an increase in the number of manufacturing steps, it is preferable to perform the step of forming the first uneven portion 33 in the second region AR2 (i.e., the step of giving the second region AR2 a three-dimensional shape) while performing the step of giving the first region AR1 the three-dimensional shape to become the lens 22 described above. This can be achieved by applying the method of forming OCL in both the first region AR1 and the second region AR2 on the surface of the organic material layer described above. Thus, it is possible to form the three-dimensional shape to become the lens 22 in both the first region AR1 and the second region AR2 of the first upper surface cover layer 28.

[0189] Similar to the first embodiment, the first concave-convex portion 33 is constructed by a combination of a first protrusion 33A, which is a portion having a convex shape, and a first concave portion 33B, which is a portion having a concave shape. Figure 14 and Figure 15 In the example, in the first region AR1, lens 22 also serves as a first convex portion 33A constituting the first concave-convex portion 3. The portion between adjacent lenses 22 also serves as a first concave portion 33B. Furthermore, since the three-dimensional shape of lens 22 is also formed in the second region AR2, lens 22 forms a first convex portion 33A in the second region AR2, and also serves as at least a portion (also becoming a first convex portion 33A) of the first concave-convex portion 33 in the second region AR2. However, Figure 14 and Figure 15This is an example, and the three-dimensional shape formed in the second region AR2 can be a different shape from that of the lens 22. That is, the first protrusion 33A of the second region AR2 and the first protrusion 33A of the first region AR1 can also have different shapes. In addition, even if the three-dimensional shape formed in the second region AR2 is a lens shape, the size of a part of the three-dimensional shape can be the same as or different from the size of the lens formed in the first region AR1.

[0190] (Second upper surface covering layer)

[0191] In the display device 10 according to the second embodiment, the second upper surface cover layer 29 is an inorganic cover 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 in the second upper surface cover layer 29. The second uneven shape CS2 is based on the shape of the first uneven shape CS1.

[0192] When the second upper surface cover layer 29 covers the first upper surface cover layer 28, a concave-convex shape is formed on the surface (first surface) side of the second upper surface cover layer 29, conforming to the surface shape of the first upper surface cover layer 28. That is, the second upper surface cover layer 29 is formed such that the concave-convex shape CS1, reflecting the first concave-convex shape 33 formed in the first region AR1 and the second region AR2, appears directly above the first concave-convex shape 33 on the surface (upper surface) of the second upper surface cover layer 29. Therefore, a second concave-convex shape 34 having a second concave-convex shape CS2 is formed in the first region AR1 and the second region AR2 of the second upper surface cover layer 29. Furthermore, since the second upper surface cover layer 29 constitutes the surface of the substrate 110, the surface concave-convex shape 30 of the substrate 110 is constituted by the second concave-convex shape 34.

[0193] [2-2 Functions and Effects]

[0194] The display device 10 according to the second embodiment can achieve the same effect as the first embodiment.

[0195] In the display device 10 according to the second embodiment, when the lens 22 is formed in the first region AR1 of the first upper surface cover layer 28, the first concave-convex portion 33 can be formed in the first region AR1 and the second region AR2, and the lens 22 can also be used as part of the first concave-convex portion 33. In this case, by giving the second region AR2 a three-dimensional shape corresponding to the lens 22 during the step of forming the lens 22 in the first region AR1, the first concave-convex portion 33 can be formed in both the first region AR1 and the second region AR2. The necessity of separately performing the step of forming the first concave-convex portion 33 in the second region AR2 can be suppressed. Therefore, the increase in the number of manufacturing processes can be suppressed in the display device according to the second embodiment.

[0196] [3 Third Implementation]

[0197] [3-1 Construction]

[0198] In the display device 10 according to the third embodiment, such as Figure 16 and Figure 17 As shown, the peripheral light-shielding portion 23 has a third uneven portion 37 on the surface facing the first upper surface cover layer 28. This third uneven portion has a third uneven shape CS3, and the first uneven shape CS1 of the first uneven portion 33 is based on the shape of the third uneven shape CS3 of the third uneven portion 37. Apart from these structures, the other structures of the display device 10 according to the third embodiment are the same as those of the first embodiment. Therefore, in the third embodiment, the structures of the parts other than the peripheral light-shielding portion and the first uneven portion of the first upper surface cover layer are the same as those of the first embodiment. Figure 16 This is a plan view schematically showing an example of a display device according to a third embodiment. Figure 17 This is a schematic cross-sectional view illustrating an example of a display device according to a third embodiment. Furthermore, Figure 17 It is schematically shown along Figure 16 A cross-sectional view of the longitudinal section intercepted by line GG in the diagram. In the description of the third embodiment, detailed descriptions of structures identical to those in the first embodiment will be omitted.

[0199] (Surrounding shade area)

[0200] The peripheral light-shielding part 23 includes a second color filter 20. Figure 16 and Figure 17 In the example, the peripheral light-shielding portion 23 has a stacked structure of a blue filter 20B stacked on a red filter 20R of the second color filter 20, and further has a structure of a green filter 20G formed in a predetermined layout on the stacked structure (the surface of the blue filter 20B). As the material of the green filter 20G, the same material as the green filter 19G used in the first color filter 19 can be applied.

[0201] (Third concave-convex part)

[0202] A third protrusion 37 is formed on the surface (first surface) of the peripheral light-shielding portion 23. In the plan view of the substrate 110, the third protrusion 37 is formed on the surface facing the first upper surface cover layer 28 in the peripheral light-shielding portion 23.

[0203] The third convex-concave portion 37 has a third convex-concave shape CS3. The third convex-concave shape CS3 is a shape determined based on various conditions, such as the layout of the third convex-concave portion 37 and the dimensions of the three-dimensional structure constituting the third convex-concave portion 37. The third convex-concave portion 37 is constructed by combining a third convex portion 37A, which is a portion having a convex shape, and a third concave portion 37B, which is a portion having a concave shape. The layout of the third convex-concave portion 37 represents the layout of the third convex portion 37A and the third concave portion 37B. The dimensions of the three-dimensional structure constituting the third convex-concave portion 37 represent the dimensions of the third convex portion 37A and the third concave portion 37B.

[0204] The third concave-convex shape CS3 is determined to be a concave-convex shape based on the structure of the second color filter 20. Figure 16 and Figure 17 The peripheral light-shielding portion 23 shown in the example has a forming portion and a non-forming portion of the green filter 20G, and the third concave-convex shape CS3 has a shape determined by this combination of the forming portion and the non-forming portion of the green filter 20G. Furthermore, in the third concave-convex portion 37, the forming portion of the green filter 20G forms a third convex portion 37A, and a third concave portion 37B is formed between adjacent forming portions of the green filter 20G. Figure 16 and Figure 17 In the example, the third recess 37B is formed by the side surface of the green filter 20G and the non-forming portion of the green filter 20G (in Figure 16 The portion of the structure surrounded by the exposed portion of the blue filter 20B. Figure 17 In the example, the third protrusion 37 is formed by forming a green filter 20G on a blue filter 20B in a predetermined layout. However, the third protrusion 37 can also be formed by setting filters corresponding to other color types (e.g., a red filter 20R) in a predetermined layout. Therefore, the third protrusion shape CS3 can be a shape determined according to the layout of filters corresponding to at least one color type.

[0205] (First upper surface covering layer)

[0206] 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 cover layer 28. The first uneven shape CS1 of the first uneven portion 33 is based on the shape of a third uneven shape CS3.

[0207] When the first upper surface covering layer 28 covers the peripheral light-shielding portion 23, the first upper surface covering layer 28 is formed such that the concave-convex shape CS3 reflecting the third concave-convex shape 37 appears directly above the peripheral light-shielding portion 23 on the surface (upper surface) of the first upper surface covering layer 28. Therefore, a concave-convex shape reflecting the surface shape of the peripheral light-shielding portion 23 is formed directly above and near the third concave-convex shape 37 of the peripheral light-shielding portion 23 on the surface (first surface) side of the first upper surface covering layer 28. This concave-convex shape constitutes at least a portion of the first concave-convex portion 33 having the first concave-convex shape CS1.

[0208] (Second upper surface covering layer)

[0209] In the display device 10 according to the second embodiment, a second uneven portion 34 having a second uneven shape CS2 is formed on the second upper surface cover layer 29. As described in the first embodiment, the second uneven shape CS2 is based on the shape of the first uneven shape CS1. Furthermore, since the surface of the second upper surface cover layer 29 forms the surface of the substrate 110, the uneven portion 30 on the surface of the substrate 110 is constituted by the second uneven portion 34.

[0210] [3-2 Functions and Effects]

[0211] The display device 10 according to the third embodiment can achieve the same effect as the first embodiment.

[0212] According to the display device 10 of the third embodiment, the peripheral light-shielding portion 23 includes a second color filter 20, and a third uneven portion 37 can be formed by arranging a filter (e.g., a green filter 20G) containing a material also used in the first color filter 19 on the surface of the peripheral light-shielding portion 23. Therefore, based on the formation of the first color filter 19, the third uneven portion 37 can be formed in the peripheral light-shielding portion 23, and the necessity of additional forming steps for the third uneven portion 37 can be suppressed. Therefore, according to the display device of the third embodiment, the increase in the number of manufacturing processes can be suppressed.

[0213] [3-3 Variation]

[0214] (First variation)

[0215] In the display device 10 according to the third embodiment, such as Figure 18 As shown, the third uneven portion 37 of the peripheral light-shielding portion 23 can be formed based on the stacked structure of the red filter 20R and the blue filter 20B. This configuration is referred to as the first variation of the third embodiment. Figure 18 This is a cross-sectional view schematically illustrating an example of a display device according to a first variation of the third embodiment.

[0216] (Surrounding shade area)

[0217] The second color filter 20 forming the peripheral light-shielding portion 23 has a stacked structure in which a blue color filter 20B is stacked on a red color filter 20R in the thickness direction (Z-axis direction) of the substrate body 110, and has a structure in which the blue color filter 20B is formed in a predetermined layout.

[0218] exist Figure 18 The peripheral light-shielding portion 23 shown in the example has a forming portion of blue filter 20B and a non-forming portion of blue filter 20B. The forming portion of blue filter 20B forms a third protrusion 37A, and a third recess 37B is formed between the portions forming adjacent blue filters 20B. Figure 18 In this example, the third recess 37B includes a side surface of the blue filter 20B and a non-forming portion of the blue filter 20B. In this example, the third concave-convex shape CS3 is formed by a combination of the forming portion and the non-forming portion of the blue filter 20B. Note that, from the viewpoint of maintaining the function of the peripheral light-shielding portion 23, the arrangement of the blue filter is preferably determined such that the area of ​​the forming portion of the blue filter 20B is larger than the area of ​​the non-forming portion of the blue filter 20B.

[0219] The display device 10 according to the first variation of the third embodiment can achieve the same function and effect as the third embodiment described above.

[0220] (Other examples of the first variation)

[0221] Note that in Figure 18 In the example, the third uneven portion 37 is formed in the peripheral light-shielding portion 23 based on the layout of the blue filter 20B (a structure based on the combination of the forming portion and the non-forming portion of the blue filter 20B). However, the uneven structure can be formed on the surface of the peripheral light-shielding portion 23 based on the structure of the red filter. For example, it can be formed according to the thickness difference of the red color filter (not shown). In this case, the uneven shape is formed in the blue filter by reflecting the thickness difference of the red filter, and this uneven shape becomes the third uneven shape CS3 of the third uneven portion 37.

[0222] (Second variation)

[0223] In the display device 10 according to the third embodiment, such as Figure 18As shown, the peripheral light-shielding portion 23 can arrange a green filter 20G in a predetermined layout below the stacked structure of the red filter 20R and the blue filter 20B, and form a concave-convex shape as a third concave-convex shape CS3 based on the layout of the green filter 20G on the surface of the stacked structure (the surface of the blue filter 20B (first surface)). In this case, the portion of the peripheral light-shielding portion 23 with the third concave-convex shape CS3 is the third concave-convex portion 37.

[0224] (Third variation)

[0225] In the display device 10 according to the third embodiment, such as Figure 19 and Figure 20 As shown, when the three-dimensional structure 40 is formed in the outer edge region ER of the second region AR2, the three-dimensional structure 40 is covered by a second upper surface covering layer 29, and the portion of the three-dimensional structure 40 covered by the second upper surface covering layer 29 is a structural covering portion 41, at least a portion of the surface protrusions 30 may be formed in the structural covering portion 41. This configuration is referred to as a third variation of the third embodiment. Figure 19 This is a plan view schematically showing an example of a display device according to a third variation of the third embodiment. Figure 20 This is a cross-sectional view schematically illustrating an example of a display device according to a third variation of the third embodiment. Furthermore, Figure 20 It is schematically shown along Figure 19 A cross-sectional view of the longitudinal section intercepted by line HH in the diagram.

[0226] (Outer edge area)

[0227] In the plan view of the substrate 110, the outer edge region ER is defined as the region outside the formation area of ​​the protective layer 16 in the second region AR2 and outside the formation area of ​​the first upper surface covering layer 28. Figure 20 In the example, the outer end face of the protective layer 16 is located closer to the display area 10A than the outer end face of the first substrate 111. Furthermore, in the plan view of the substrate 110, the first upper surface cover layer 28 covers the formation area of ​​the protective layer 16, and the outer end face of the first upper surface cover layer 28 is located outside the protective layer 16 and closer to the display area 10A than the outer end face of the first substrate 111. That is, in Figure 20 In the example, the outer edge region ER is the region outside the formation region of the first upper surface cover layer 28.

[0228] (Three-dimensional structure)

[0229] The substrate 110 has a three-dimensional structure 40 in the outer region ER. The three-dimensional structure 40 includes a third color filter 21, which serves as a color filter 18. Figure 20In the example, a three-dimensional structure 40 can be formed on the substrate 110 by setting a green filter 21G as a third color filter 21 in a predetermined layout in the outer edge region ER. In the outer edge region ER, a formed portion and a non-formed portion of the green filter 21G are formed, and the green filter 21G corresponds to the three-dimensional structure 40. Note that in... Figure 20 In the example, the three-dimensional structure 40 is formed by forming a green filter 21G in the outer edge region ER in a predetermined layout, but the three-dimensional structure 40 can also be formed by setting filters corresponding to other color types (e.g., red filters) in a predetermined layout.

[0230] (Second upper surface covering layer)

[0231] The second upper surface covering layer 29 covers the three-dimensional structure 40. In Figure 20 In the example, the second upper surface cover layer 29 covers the outer end face of the first upper surface cover layer 28 and extends further to the outer edge region ER. A portion of the second upper surface cover layer 29 extending to the outer edge region ER covers the three-dimensional structure 40. Note that the portion of the second upper surface cover layer 29 that covers the three-dimensional structure 40 is referred to as the structural cover portion 41.

[0232] (Second concave-convex part)

[0233] A second uneven portion 34 having a second uneven shape CS2 is formed on the second upper surface cover layer 29. The second uneven shape CS2 of the second uneven portion 34 includes a shape based on the three-dimensional structure 40.

[0234] When the second upper surface cover layer 29 covers the three-dimensional structure 40, a concave-convex shape is formed on the surface (first surface) side of the structural cover portion 41 of the second upper surface cover layer 29, conforming to the surface shape of the three-dimensional structure 40. That is, the second upper surface cover layer 29 is formed such that the concave-convex shape reflecting the shape of the three-dimensional structure 40 and the shape of its periphery appears directly above the three-dimensional structure 40 on the surface (upper surface) of the second upper surface cover layer 29. Therefore, a concave-convex shape based on the three-dimensional structure 40 is formed on the structural cover portion 41 of the second upper surface cover layer 29, that is, directly above and near the three-dimensional structure 40. Figure 20 In the example, the uneven shape based on the three-dimensional structure 40 is included in at least a portion of the second uneven shape CS2 of the second uneven portion 34. Furthermore, since the second upper surface covering layer 29 forms the surface of the substrate 110, the surface uneven portion 30 of the substrate 110 is constituted by the second uneven portion 34. Therefore, at least a portion of the surface uneven portion 30 is formed in the structural covering portion 41 of the three-dimensional structure 40 covering the second upper surface covering layer 29. Note that in Figure 20For ease of explanation, the shape of the second concave-convex portion 34 formed on the first peripheral portion SR1 is described as slightly arc-shaped, and the shape of the second concave-convex portion 34 formed on the outer edge portion ER is described as angular. However, the shapes of these second concave-convex portions 34 are not limited to these shapes. Furthermore, in... Figure 20 The diagram shows a portion of the second protrusion 34 formed in the outer edge region ER with a shape different from the portion of the second protrusion 34 formed in the first peripheral region SR1; however, this is only an example. For instance, if a positive resist containing organic material is used as the material of the first upper surface cover layer 28 and a negative resist is used as the material of the three-dimensional structure 40, the shapes of the portion of the second protrusion 34 formed in the outer edge region ER, and the portion of the second protrusion 34 formed in the first peripheral region SR1, may differ from each other depending on the processing steps, such as the reflow process.

[0235] (Planarization layer)

[0236] The three-dimensional structure 40 can be directly formed on the surface (first surface) of the first substrate 111, but as in Figure 20 As shown in the example, the planarization layer 17 can be disposed not only on the protective layer 16, but also on a predetermined area of ​​the outer edge region ER, and a three-dimensional structure 40 can be disposed on the planarization layer 17 disposed in the outer edge region ER.

[0237] The display device 10 according to the third variation of the third embodiment can achieve the same effects as those of the third embodiment described above. Furthermore, since the uneven structure can be formed near the outer end of the outer region 10B of the substrate 110, peeling between the substrate 110 and the adhesive layer 113 can be more effectively suppressed.

[0238] Note that in the display device 10 according to the third variation of the third embodiment, the third uneven portion 37 is formed in the peripheral light-shielding portion 23, and the three-dimensional structure 40 is provided in the substrate 110. However, in the display device 10 according to the present disclosure, the third uneven portion 37 of the peripheral light-shielding portion 23 can be omitted, and the three-dimensional structure 40 can be provided in the substrate 110.

[0239] [4 Fourth Implementation Method]

[0240] [4-1 Construction]

[0241] In the display device according to the fourth embodiment, such as Figure 21 and Figure 22As shown, at least one of the grooves and holes, a concave structure 43, is formed in the extension 42 of the second upper surface cover layer 29, and the concave structure 43 forms at least a portion of the surface unevenness 30. Apart from these constructions, the display device according to the fourth embodiment can be the same as the display device according to the first embodiment. Therefore, in the fourth embodiment, except for the construction of the extension of the second upper surface cover layer, the construction of other portions can be the same as the construction of the first embodiment. Figure 21 This is a plan view schematically showing an example of a display device according to the fourth embodiment. Figure 22 This is a cross-sectional view schematically showing an example of a display device according to the fourth embodiment. Furthermore, Figure 22 It is schematically shown along Figure 21 A cross-sectional view of the longitudinal section intercepted by line II in the diagram. In the description of the fourth embodiment, detailed descriptions of the same structure as in the first embodiment will be omitted.

[0242] (Second upper surface covering layer)

[0243] The second upper surface cover layer 29 has an extension 42. The second upper surface cover layer 29 covers the outer end face of the first upper surface cover layer 28 and further extends to the outer edge region ER, and the portion of the second upper surface cover 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 outside the formation area of ​​the protective layer 16 and outside the formation area of ​​the first upper surface cover layer 28 in the second region AR2. Figure 21 In the example, in the plan view of the base 110, the extension 42 is formed as a rectangular ring. However, this is just one example of the extension 42 and does not limit the construction of the extension 42.

[0244] (Concave structure)

[0245] In the second upper surface cover layer 29, a concave structure 43 is formed in the extension 42. The concave structure 43 represents at least one of a groove and a hole. The shape, size, and layout of the concave structure 43 are not particularly limited. Figure 21 and Figure 22 In this example, the groove 44, which is a concave structure 43, is formed such that its longitudinal direction is along the outer end 28A of the first upper surface cover layer 28. Furthermore, the shape, size, and layout of the groove 44 are not particularly limited. In this example, a plurality of grooves 44 are arranged at intervals towards the outside in the extension 42. The plurality of grooves 44 are referred to as a groove group 45. Figure 21 and Figure 22 In the example, multiple slot groups 45 are arranged at intervals along the extension direction of the outer end 28A of the first upper surface cover layer 28.

[0246] (Surface irregularities)

[0247] The surface of the substrate 110 includes a second upper surface cover layer 29, and the uneven structure formed in the second upper surface cover layer 29 is a surface uneven portion 30. As described in the first embodiment, the surface uneven portion 30 has a surface protrusion 31 and a surface concave portion 32 as unit shape portions, and has an uneven shape formed by combining the surface protrusion 31 and the surface concave portion 32. Furthermore, in the second upper surface cover layer 29, since a concave structure 43 is formed in the extension 42 as described above, the concave structure 43 forms the surface concave portion 32. The concave structure 43 forms at least a portion of the surface uneven portion 30. Figure 21 and Figure 22 In this embodiment, since the groove 44 forms a surface recess 32, the groove 44 forms part of the surface unevenness 30. Note that in Figure 21 and Figure 22 In the example, the portion between adjacent grooves 44 forms a surface protrusion 31.

[0248] [4-2 Functions and Effects]

[0249] The display device according to the fourth embodiment can achieve the same effect as the first embodiment.

[0250] [5 Fifth Implementation Method]

[0251] [5-1 Construction]

[0252] like Figure 23 As shown, the display device according to the fifth embodiment has a structure in which the layer corresponding to the second upper surface cover layer 29 is omitted from the structure of the display device according to the first embodiment, and the layer covering the first color filter 19 and the peripheral light-shielding portion 23 (the upper surface cover layer 50 in the fifth embodiment) is brought into contact with the adhesive layer 113. Figure 23 This is a schematic cross-sectional view illustrating an example of a display device according to a fifth embodiment. Therefore, in the fifth embodiment, except for the construction of the first upper surface covering layer, the construction of other parts can be the same as that of the first embodiment. In the description of the fifth embodiment, detailed descriptions of constructions identical to those of the first embodiment will be omitted.

[0253] (Upper surface covering layer)

[0254] In the display device according to the fifth embodiment, the substrate 110 includes an upper surface cover layer 50. Similar to the first upper surface cover layer 28 described in the first embodiment, the first color filter 19 and the peripheral light-shielding portion 23 are covered and comprise an organic resin. The upper surface cover layer 50 is a layer that forms the surface of the substrate 110 and contacts the adhesive layer 113.

[0255] (Concave and convex parts)

[0256] The upper surface cover layer 50 has a protrusion 51. The protrusion 51 in the upper surface cover layer 50 can be formed in the same manner as the first protrusion 33 described in the first embodiment. In the plan view of the substrate 110, the protrusion 51 is formed on the surface facing the adhesive layer 113 and is formed at least in the second region AR2. The protrusion 51 is constructed from a combination of a convex protrusion 51A and a concave concave portion 51B. Figure 23 In the example shown, the protrusion 51 is formed in both the first peripheral region SR1 and the second peripheral region SR2 in the second region AR2. However, this is an example, and the protrusion 51 may also be formed in either the first peripheral region SR1 or the second peripheral region SR2 in the second region AR2.

[0257] The concave-convex portion 51 has a concave-convex shape CSU. The concave-convex shape CSU of the concave-convex portion 51 may have the same shape as the first concave-convex shape CS1 described in the first embodiment.

[0258] As a method for forming the uneven portion 51, the same method as the method for forming the first uneven portion 33 can be applied. 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 (i.e., the upper surface coating layer 50).

[0259] In the display device 10 according to the fifth embodiment, the surface irregularities 30 of the substrate 110 include irregularities 51.

[0260] [5-2 Functions and Effects]

[0261] The display device according to the fifth embodiment can achieve the same effect as the first embodiment.

[0262] [5-3 Variation]

[0263] In the display device of the fifth embodiment, similar to the second embodiment, the uneven portion 51 may also be formed in the first region AR1 and the second region AR2. This configuration is referred to as a variation of the fifth embodiment. In the variation of the fifth embodiment, the protrusion 51A formed in the uneven portion 51 in the second region AR2 may have a three-dimensional shape that serves as a lens 22. Furthermore, the protrusion 51A formed in the first region AR1 may also have a three-dimensional shape that serves as a lens 22.

[0264] [6 Sixth Implementation Method]

[0265] [6-1 Construction]

[0266] like Figure 24As shown, the display device according to the sixth embodiment has a structure in which the layer corresponding to the first upper surface cover layer 28 and the layer corresponding to the second upper surface cover layer 29 are omitted from the structure 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. Figure 24 This is a schematic cross-sectional view illustrating an example of a display device according to a sixth embodiment. Therefore, in the sixth embodiment, except for the portion in contact with the adhesive layer 113, the structure of the other portions of the substrate 110 can be the same as that of the third embodiment. Furthermore, the same structure as in the third embodiment and the first embodiment can be the same structure as in the first embodiment for the sixth embodiment. In the description of the sixth embodiment, detailed descriptions of structures identical to those in the third embodiment and the first embodiment are omitted.

[0267] (Surrounding shade area)

[0268] According to Figure 24 In the sixth embodiment of the display device 10 shown in the example, the peripheral light-shielding portion 23 is exposed on the surface of the substrate 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 portion of the surface uneven portion 30.

[0269] As described in the third embodiment, the peripheral light-shielding portion 23 includes a second color filter 20. Figure 24 In the example, the peripheral light-shielding part 23 has a stacked structure of stacked red filter 20R and blue filter 20B, and further has a structure in which green filter 20G is formed on the stacked structure (the surface of blue filter 20B) in a predetermined layout.

[0270] (Concave and convex parts)

[0271] The uneven portion 55 is formed on the surface (first surface) of the peripheral light-shielding portion 23. The uneven portion 55 is constructed in the same way as the third uneven portion 37 described in the third embodiment. The uneven portion 55 is constructed by combining a convex portion 55A, which is a portion having a convex shape, and a concave portion 55B, which is a portion having a concave shape.

[0272] The concave-convex portion 55 has a concave-convex shape CSF. The concave-convex shape CSF has the same shape as the third concave-convex shape CS3 described in the third embodiment.

[0273] Similar to the third embodiment, the uneven shape CSF of the uneven portion 51 is determined according to the structure of the second color filter 20 (i.e., according to the stacking structure of the second color filter 20). Figure 24The example shown has a peripheral light-shielding portion 23 with a forming portion of a green filter 20G and a non-forming portion of a green filter 20G. The forming portion of the green filter 20G forms a protrusion 55A, and a recess 55B is formed between adjacent portions of the green filter 20G. Figure 24 In the example, the recess 55B includes a side surface of the green filter 20G and a non-forming portion of the green filter 20G. In this example, the concave-convex shape CSF is determined by the combination of the forming portion and the non-forming portion of the green filter 20G. Note that in Figure 24 In the example, the protrusion 55 is formed by arranging filters (e.g., red filter 20R) corresponding to other color types besides the green filter 20G in a predetermined layout on the blue filter 20B. Therefore, the protrusion shape CSF can have a shape determined according to the layout of the filters corresponding to at least one color type.

[0274] exist Figure 24 In the example shown, in the display device 10 according to the sixth embodiment, the surface irregularities 30 of the substrate 110 are composed of irregularities 55. Therefore, in Figure 24 In the example, the surface irregularity 30 of the substrate 110 has an irregularity CSF formed on the surface of the peripheral light-shielding portion 23 and determined according to the layout of the second color filter 20.

[0275] [6-2 Functions and Effects]

[0276] The display device according to the sixth embodiment can achieve the same effect as the third embodiment.

[0277] [6-3 Variation]

[0278] (First variation)

[0279] In the display device 10 according to the sixth embodiment, such as Figure 25 As shown, similar to the first variation of the third embodiment, the uneven portion 55 of the peripheral light-shielding portion 23 can be formed based on the stacked structure of the red filter 20R and the blue filter 20B. This configuration is referred to as the first variation of the sixth embodiment. Figure 25 This is a cross-sectional view schematically showing an example of a display device according to a first variation of the sixth embodiment.

[0280] The second color filter 20 forming the peripheral light-shielding portion 23 has a stacked structure in which a blue color filter 20B is stacked on a red color filter 20R, and has a structure in which the blue color filter 20B is formed in a predetermined layout.

[0281] Figure 25The uneven shape CSF of the uneven portion 55 of the peripheral light-shielding portion 23 shown in the example is determined by the combination of the forming portion and the non-forming portion of the blue filter 20B.

[0282] (Other examples of the first variation)

[0283] Note that in Figure 25 In the example, the uneven portion 55 is formed according to the layout of the blue filter 20B within the peripheral light-shielding portion 23 (based on the structure combining the forming and non-forming portions of the blue filter 20B). However, the uneven portion 55 can 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 Figure 26 As shown, it can be formed according to the thickness difference of the red filter. In this case, by reflecting the thickness difference of the red filter 20R, an uneven shape is formed in the blue filter 20B, and this uneven shape becomes the uneven shape CSF of the uneven portion 55.

[0284] (Second variation)

[0285] In the display device 10 according to the sixth embodiment, such as Figure 27 As shown, the peripheral light-shielding portion 23 can arrange a green filter 20G in a predetermined layout below the stacked structure of the red filter 20R and the blue filter 20B, and form an uneven shape as an uneven shape CSF based on the layout of the green filter 20G on the surface of the stacked structure (the surface (first surface) of the blue filter 20B). In this case, in the formation portion of the green filter 20G, the red filter 20R is formed to follow the shape of the green filter 20G, and an uneven structure reflecting the shape of the green filter 20G is formed on the upper surface side (first surface side) of the red filter. Furthermore, in the blue filter 20B formed on the upper surface (first surface) side of the red filter 20R, an uneven structure reflecting the shape of the red filter 20R is formed on the upper surface side (first surface side) of the blue filter 20B. In addition, the uneven structure formed on the upper surface side of the blue filter 20B constitutes an uneven portion 55. Furthermore, the shape of the uneven portion 55 formed on the surface of the peripheral light-shielding portion 23 is an uneven shape CSF.

[0286] (Third variation)

[0287] In the display device 10 according to the sixth embodiment, such as Figure 28 As shown, the three-dimensional structure 56 can be formed in the outer peripheral region NR of the second region AR2, the three-dimensional structure 56 can contact the adhesive layer 113, and the three-dimensional structure 56 can form at least a portion of the surface unevenness 30. This configuration is referred to as the third variation of the sixth embodiment. Figure 28This is a cross-sectional view schematically showing an example of a display device according to a third variation of the sixth embodiment.

[0288] (Outer perimeter area)

[0289] In the plan view of the substrate 110, the outer peripheral region NR is defined as the region outside the outer end of the outer peripheral light-shielding portion 23 in the second region AR2. It is defined as the region outside the formation area of ​​the protective layer 16 and outside the formation area of ​​the first upper surface covering layer 28. Figure 28 In the example, the outer end face of the protective layer 16 is located closer to the display area 10A than the outer end face of the first substrate 111. That is, in Figure 28 In the example, the outer peripheral region NR is formed such that the boundary between the first outer peripheral region SR1 and the second outer peripheral region SR2 lies within the outer peripheral region NR.

[0290] (Three-dimensional structure)

[0291] The three-dimensional structure 56 is set in the outer peripheral region NR. Figure 28 In the example, the three-dimensional structure 56 is formed in the second peripheral region SR2.

[0292] The three-dimensional structure 56 may have the same structure as the three-dimensional structure 40 described in Variation 3 of the third embodiment. The three-dimensional structure 56 includes a third color filter 21 as a color filter 18. Figure 28 In the example, a three-dimensional structure 56 is formed in the substrate 110 by setting a green filter 21G as a third color filter 21 at a predetermined position in a second peripheral region SR2 included in the peripheral region NR. In the second peripheral region SR2, a forming portion and a non-forming portion of the green filter 21G are formed, and the green filter 21G corresponds to the three-dimensional structure 56. Note that in Figure 28 In the example, the three-dimensional structure 56 includes a green filter 21G, but the three-dimensional structure 56 may include a filter corresponding to another color type (e.g., a red filter).

[0293] In the display device 10, the surface of the three-dimensional structure 56 is exposed on the surface of the substrate 110, and the three-dimensional structure 56 is in contact with the adhesive layer 113. Furthermore, the three-dimensional structure 56 forms an uneven structure on the surface of the substrate 110. Therefore, the three-dimensional structure 56 forms at least a portion of the uneven portion 30 on the surface of the substrate 110.

[0294] (Planarization layer)

[0295] The three-dimensional structure 56 can be directly formed on the surface (first surface) of the first substrate 111, but as Figure 28As shown in the example, the planarization layer 17 can be disposed not only on the protective layer 16 but also on a predetermined area of ​​the peripheral region NR, and a three-dimensional structure 56 can be disposed on the planarization layer 17 disposed in the peripheral region NR.

[0296] The display device 10 according to the third variation of the sixth embodiment can achieve the same function and effect as the sixth embodiment described above. Furthermore, since a textured structure can be formed near the outer end of the outer region 10B in the substrate 110, peeling between the substrate 110 and the adhesive layer 113 can be more effectively suppressed.

[0297] According to Figure 28 In the example of the display device 10 of the third variation of the sixth embodiment shown, the peripheral light-shielding portion 23 includes, as shown in the example... Figure 24 The example describes the second color filter 20. The peripheral light-shielding portion 23 has a stacked structure of a red filter 20R and a blue filter 20B, and further has a structure in which a green filter 20G is formed on the stacked structure (on the surface of the blue filter 20B) in a predetermined layout. However, this is an example, and in the display device 10 of the third variation according to the sixth embodiment, for example, as Figures 25 to 27 As shown in the example, the peripheral light-shielding portion 23 can be constructed in the same way as the display device 10 of the first variant or variant 2 according to the sixth embodiment.

[0298] It should be noted that in the display device 10 according to the third variation of the sixth embodiment, a concave-convex portion 55 is formed in the peripheral light-shielding portion 23, and a three-dimensional structure 56 is provided in the substrate 110. However, in the display device 10 according to the present disclosure, the concave-convex portion 55 of the peripheral light-shielding portion 23 can be omitted, and the three-dimensional structure 56 can be provided in the substrate 110.

[0299] [7 Seventh Implementation Method]

[0300] like Figure 29 As shown, the display device according to the seventh embodiment is formed in the same manner as the first embodiment, except that an optical lens 115 comprising glass, resin, etc. is provided as the second substrate 112. Figure 29 This is a schematic cross-sectional view illustrating an example of a display device according to the seventh embodiment. Therefore, in the seventh embodiment, the construction of parts other than the material of the second substrate 112 can be the same as in the first embodiment, and thus detailed descriptions of the construction of each layer are omitted. Furthermore, the same effects as in the first embodiment can be obtained in the display device according to the seventh embodiment. The optical lens 115 is configured to cover a plurality of sub-pixels 101, etc. Note that in Figure 29 For ease of description, the structural diagram of the optical lens 115 is omitted. However, in Figure 30 A, Figure 30 B and Figure 30 In C, an example of an optical lens 115 that can be adapted to a second substrate 112 is shown. Figure 30 A, Figure 30 B and Figure 30 As shown in C, examples of optical lenses 115 include convex lenses 115A, concave lenses 115B, Fresnel lenses 115C, etc. Note that concave lenses 115B can include cover glass, etc., formed by a first layer 115B1 and a second layer 115B2 to create a structure that functions as a concave lens. Figure 30 A, Figure 30 B and Figure 30 In section C, for ease of description, only the adhesive layer 113 and the optical lens 115 of the display device 10 are shown, and descriptions of other structures are omitted.

[0301] [8 Application Examples]

[0302] (Electronic devices)

[0303] As an example of application, the display device 10 according to each of the above embodiments can be installed in various electronic devices. In particular, the display device is preferably installed in a device that requires high image resolution and is used near the eyes for viewing in a magnified state. This device includes electronic viewfinders of cameras or single-lens reflex cameras, head-mounted displays, etc. Examples of electronic devices include the following specific examples 1 to 6.

[0304] (Specific example 1)

[0305] Figure 31 A is a front view showing an example of the appearance of a digital still camera 310. Figure 31 B is a rear view showing an example of the appearance of the digital still camera 310. The digital still camera 310 is a single-lens reflex type with interchangeable lenses and includes an interchangeable imaging lens unit (interchangeable lens) 312 located approximately in the center of the front of the camera body (camera body) 311, and a grip portion 313 on the left side of the front for the photographer to hold.

[0306] The monitor 314 is positioned slightly to the left of the center of the back of the camera body 311. An electronic viewfinder (eyepiece window) 315 is positioned above the monitor 314. By observing the electronic viewfinder 315, the photographer can visually identify the optical image of the subject guided by the imaging lens unit 312 to determine the composition. The electronic viewfinder 315 can be any of the display devices 10 according to the above embodiments and variations. (Specific Implementation Example 2)

[0308] Figure 32This is a perspective view showing an example of the appearance of a head-mounted display 320. The head-mounted display 320 includes, for example, ear loops 322 worn on the user's head on both sides of the eyeglass-shaped display portion 321. As the display portion 321, any of the display devices 10 according to the above embodiments and variations can be used.

[0309] (Specific example 3)

[0310] Figure 33 This is a perspective view showing an example of the appearance of a television device 330. The television device 330 includes, for example, an image display screen 331 including a front panel 332 and a filter glass 333, and the image display screen 331 is constructed from any display device 10 according to the above-described embodiments and variations.

[0311] (Specific example 4)

[0312] Figure 34 An example of the appearance of a see-through head-mounted display 340 is shown. The see-through head-mounted display 340 includes a main body 341, an arm 342, and a lens barrel 343.

[0313] The main body 341 is connected to the arm 342 and the glasses 350. Specifically, the long side end of the main body 341 is connected to the arm 342, and one side of the side surface of the main body is connected to the glasses 350 via a connecting member. Note that the main body 341 can be worn directly on the human head.

[0314] The main body 341 includes a control panel and a display unit for controlling the operation of the see-through head-mounted display 340. An arm 342 connects the main body 341 and the lens barrel 343, and supports the lens barrel 343. Specifically, the arm 342 is coupled to both the end of the main body 341 and the end of the lens barrel 343 to fix the lens barrel 343. Furthermore, the arm 342 includes a signal line for transmitting data related to the image provided from the main body 341 to the lens barrel 343.

[0315] The lens tube 343 projects image light from the main body 341 via the arm 342 toward the eyes of the user wearing the see-through head-mounted display 340 through the eyepiece 351. In the see-through head-mounted display 340, the display section of the main body 341 includes any of the aforementioned display devices 10, etc.

[0316] (Specific example 5)

[0317] Figure 35 This is a perspective view showing an example of the appearance of the Smartphone 360. (As shown) Figure 35 As shown, the smartphone 360 ​​includes a display unit 361 that displays information such as pixels and an operation unit 362 that includes buttons for receiving user input. The display device 10 according to the above embodiment and its variations can be applied to the display unit 361.

[0318] (Specific example 6)

[0319] The aforementioned display device 10, etc., can be installed in vehicles or in various displays.

[0320] Figure 36 A and Figure 36 B is a diagram illustrating an example of the interior structure of a vehicle 500 equipped with various displays. Specifically, Figure 36 A is a diagram showing an example of the interior state of vehicle 500 from the rear to the front. Figure 36 B is a diagram showing an example of the interior state of vehicle 500 from its rear to its front.

[0321] Vehicle 500 includes a central display 501, a console display 502, a head-up display 503, a digital rearview mirror 504, a steering wheel display 505, and a rear-seat entertainment display 506. At least one of these displays includes any of the aforementioned display devices 10, etc. For example, all these displays may include any of the aforementioned display devices 10, etc.

[0322] The central display 501 is located on the dashboard facing the driver's seat 508 and the passenger seat 509. Figure 36 A and Figure 36 Example B shows a central display 501 with a transversely elongated shape extending from the driver's seat 508 side to the passenger seat 509 side; however, the screen size and arrangement of the central display 501 are arbitrary. The central display 501 is capable of displaying information sensed by various sensors. As specific examples, the central display 501 can display images captured by an image sensor, images of the distance to obstacles in front of or to the sides of the vehicle 500 measured by a ToF sensor, passenger body temperatures detected by an infrared sensor, etc. The central display 501 can be used to display at least one of, for example, safety-related information, operational-related information, lifestyle logs, health-related information, authentication / identification-related information, or entertainment-related information.

[0323] Safety-related information includes information about drowsiness detection, distraction detection, detection of mischief by accompanying children, whether seat belts are worn, and passenger departure detection, and is sensed by sensors, for example, those mounted in an overlapping manner on the rear side of the central display 501. Operation-related information is obtained by detecting gestures related to passenger actions using sensors. Sensed gestures may include the operation of various types of equipment in the vehicle 500. For example, the operation of air conditioning, navigation, audiovisual (AV) systems, lighting, etc. A life log includes a log of all passengers' activities. For example, the life log includes a record of the behavior of each passenger in the vehicle. By acquiring and storing the life log, the condition of each passenger at the time of an accident can be checked. Health-related information uses sensors such as temperature sensors to sense passenger body temperature and estimates passenger health status based on the sensed body temperature. Alternatively, an image sensor can be used to image the passenger's face, and passenger health status can be estimated based on the imaged facial expressions. Furthermore, automatic voice interaction with passengers can be performed, and passenger health status can be estimated based on the content of the responses received from passengers. Authentication / identification related information includes keyless entry functions that use sensors to perform facial authentication and functions that automatically adjust seat height and position via facial recognition. Entertainment related information includes functions that use sensors to detect passenger operation information of AV devices and functions that use sensors to recognize passenger faces and provide content suitable for passengers via AV devices.

[0324] For example, the console display 502 can be used to display log information. The console display 502 is located near the gear shift lever 511 of the center console 510 between the driver's seat 508 and the passenger seat 509. The console display 502 can also display information detected by various sensors. Furthermore, the console display 502 can display images of the vehicle's surroundings captured by image sensors, or it can display images of the distances to obstacles around the vehicle.

[0325] The head-up display 503 is virtually displayed behind the windshield 512 in front of the driver's seat 508. For example, the head-up display 503 can be used to display at least one piece of information, including safety-related information, operation-related information, life logs, health-related information, authentication / identification-related information, and entertainment-related information. Since in many cases the head-up display 503 is actually positioned 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 vehicle 500's speed and remaining fuel (battery) level.

[0326] The digital rearview mirror 504 can not only display the rear of the vehicle 500, but also the status of the rear passengers. Therefore, for example, by overlapping the sensors on the back side of the digital rearview mirror 504, it can be used to display life log information.

[0327] The steering wheel display 505 is positioned near the center of the steering wheel 513 in the vehicle 500. The steering wheel display 505 can be used to display at least one type of information, such as safety-related information, operation-related information, daily logs, health-related information, authentication / identification-related information, and entertainment-related information. Specifically, because the steering wheel display 505 is close to the driver's hands, it is suitable for displaying daily log information such as the driver's body temperature, or for displaying information regarding the operation of AV devices, air conditioning equipment, etc.

[0328] The rear entertainment display 506 is attached to the rear side of the driver's seat 508 or the front passenger seat 509 and is for viewing by passengers in the rear seats. The rear entertainment display 506 can display at least one of the following: safety-related information, operational-related information, lifestyle logs, health-related information, certification / identification-related information, or entertainment-related information. Specifically, the rear entertainment display 506 located in front of the rear passengers displays information relevant to the rear passengers. For example, it may display information about the operation of AV devices or HVAC systems, or it may display the results of the rear passengers' body temperature measured using a temperature sensor.

[0329] Sensors can be arranged in an overlapping manner on the back side of the display device 10, etc., and can measure the distance to objects present in the surrounding environment. Optical ranging methods are broadly classified into passive and active methods. Passive methods perform distance measurement by receiving light from an object without projecting light from the sensor onto the object. Passive methods include lens focusing methods, stereo vision methods, and monocular vision methods. Active methods include distance measurement performed by projecting light onto an object, and measuring distance by receiving reflected light from an object using a sensor. Active methods include optical radar methods, active stereo vision methods, illuminance difference stereo methods, moiré topology methods, and interferometric methods. Any of the aforementioned display devices 10, etc., can be used to perform distance measurement using any of these methods. By using sensors, etc., arranged in an overlapping manner on the back side of the display device 10, the aforementioned passive or active distance measurement can be performed.

[0330] Although the display device and application examples according to the first to seventh embodiments and variations of this disclosure have been specifically described above, this disclosure is not limited to the display device and application examples according to the first to seventh embodiments and variations described above, and various modifications can be made based on the technical concept of this disclosure.

[0331] For example, the structures, methods, steps, shapes, materials, values, etc. described in the display devices and application examples according to the first to seventh embodiments and variations are merely examples, and different structures, methods, steps, shapes, materials, values, etc. may be used as needed.

[0332] Without departing from the spirit of this disclosure, the structure, method, steps, shape, material, values, etc. of the display device and application example according to the first embodiment to the seventh embodiment and the modified examples described above can be combined with each other.

[0333] The materials described in the first to eleventh embodiments and variations of the display device and application example above may be used alone or in combination of two or more, unless otherwise stated.

[0334] Furthermore, this disclosure may be constructed in the following ways.

[0335] (1) A display device including a display area, the display device comprising: The substrate includes a first substrate; a light-emitting element having a structure in which a first electrode, an organic layer and a second electrode are sequentially stacked 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 on the outer side of the display area. The second substrate has a surface facing the substrate from which the light-emitting element is formed; and An adhesive layer is disposed between the substrate and the second substrate and bonds the substrate and the second substrate, wherein... In the plan view of the substrate, if the area from the inner edge of the peripheral light-shielding portion to the inner side is defined as the first region, and the area from the inner edge of the peripheral light-shielding portion to the outer side is defined as the second region, the substrate includes a first color filter disposed in the first region and a second color filter disposed in the second region and forming the peripheral light-shielding portion as color filters. In the plan view of the substrate, surface irregularities are formed in the area on the surface of the substrate that is in contact with the adhesive layer, and in at least the second region.

[0336] (2) According to the display device of (1), wherein, The substrate includes a first upper surface covering layer that covers a first color filter and a peripheral light-shielding portion and comprises an organic resin, and a second upper surface covering layer that covers the first upper surface covering layer and comprises an inorganic material. In the plan view of the substrate, the first upper surface cover layer is on the surface facing the second upper surface cover layer and includes a first uneven portion having a first uneven shape in the second region. In the plan view of the substrate, the second upper surface cover layer includes a second protrusion with a second uneven shape on the surface facing the adhesive layer, the second uneven shape being based on the first uneven shape of the first uneven portion, and The surface irregularities include a second irregularity.

[0337] (3) The display device according to (2), wherein, The surface irregularities, the first irregularity, and the second irregularity are further formed in the first region.

[0338] (4) The display device according to (3), wherein, The first upper surface covering layer includes a lens at least in the first region, and The lens also serves as at least a portion of the first concave-convex portion.

[0339] (5) The display device according to (4), wherein, The first upper surface covering layer also includes a lens in the second region.

[0340] (6) The display device according to (2), wherein, The outer end face of the protective layer is positioned closer to the display area than the outer end face of the first substrate. In the planar view of the substrate, the first upper surface covering layer and the second upper surface covering layer cover the area where the protective layer is formed and extend to the outside of the protective layer. In the case where the area forming the protective layer in the second region is the first peripheral region, and the area outside the first peripheral region is defined as the second peripheral region, The first and second concave-convex portions are formed in the second peripheral region.

[0341] (7) The display device according to (1), wherein, The substrate includes a first upper surface covering layer that covers a first color filter and a peripheral light-shielding portion and comprises an organic resin; and a second upper surface covering layer that covers the first upper surface covering layer and comprises an inorganic material. In the plan view of the substrate, the first upper surface cover layer is on the surface facing the second upper surface cover layer and includes a first uneven portion having a first uneven shape in the second region. In the plan view of the substrate, a second uneven portion with a second uneven shape is formed on the surface facing the adhesive layer in the second upper surface cover layer. This second uneven shape is based on the first uneven shape of the first uneven portion. The peripheral light-shielding portion has a third uneven portion on the surface facing the first upper surface covering layer. The third uneven portion has a third uneven shape, which is an uneven shape determined according to the structure of the second color filter. The first concave-convex shape of the first concave-convex portion is based on the shape of the third concave-convex ... portion, and The surface unevenness is composed of a second unevenness.

[0342] (8) The display device according to (7), wherein, The peripheral light-shielding section has a structure in which multiple color filters corresponding to various color types are stacked as second color filters in the direction along the thickness direction of the substrate, and The concave-convex shape of the peripheral light-shielding part has a shape determined according to the layout of the filter corresponding to at least one color type.

[0343] (9) A display device according to any one of (1), (7) and (8), wherein, The substrate includes a first upper surface covering layer that covers a first color filter and a peripheral light-shielding portion and comprises an organic resin, and a second upper surface covering layer that covers the first upper surface covering layer and comprises an inorganic material. The outer end face of the protective layer and the outer end face of the first upper surface cover layer are positioned closer to the display area than the outer end face of the first substrate. In the second region, the area outside the formation area of ​​the protective layer and outside the formation area of ​​the first upper surface covering layer is defined as the outer edge region. The substrate includes a three-dimensional structure in its outer region, which includes a third color filter serving as a color filter. The second upper surface covering layer includes a structural covering portion that covers the three-dimensional structure, and At least a portion of the surface irregularities is formed in the structural cover.

[0344] (10) A display device according to any one of (1), (7), (8) and (9), wherein, The substrate includes a first upper surface covering layer that covers a first color filter and a peripheral light-shielding portion and comprises an organic resin; and a second upper surface covering layer that covers the first upper surface covering layer and comprises an inorganic material. The outer end face of the protective layer and the outer end face of the first upper surface cover layer are positioned closer to the display area than the outer end face of the first substrate. In the second region, the area outside the formation area of ​​the protective layer and outside the formation area of ​​the first upper surface covering layer is defined as the outer edge region. A portion of the second upper surface covering layer is formed in the outer edge region. When the portion of the second upper surface covering layer formed in the outer edge region 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 portion of the surface's unevenness.

[0345] (11) A display device according to any one of (1), (7), (8) and (9), wherein, The substrate includes an upper surface covering layer that covers the first color filter and the peripheral light-shielding portion and contains an organic resin. In the plan view of the substrate, the upper surface cover layer includes a protrusion with an uneven shape on the surface facing the adhesive layer, and at least in the second region. The surface is composed of uneven parts.

[0346] (12) According to the display device of (1), wherein, In the substrate, surface irregularities are formed on the surface of the peripheral light-shielding portion, and are formed into irregular shapes determined according to the structure of the second color filter.

[0347] (13) A display device according to any one of (1), (2) and (6) to (12), wherein, The surface irregularity includes multiple unit shape portions of at least one of a surface protrusion and a surface concavity, and In the planar view of the substrate, at least one unit shape portion is arranged concentrically.

[0348] (14) A display device according to any one of (1), (2) and (6) to (12), wherein, The surface unevenness includes multiple unit shape portions of at least one of a surface protrusion and a surface concaveness, and includes multiple unit shape groups, each unit shape group including multiple unit shape portions, and In the planar view of the matrix, at least one group of unit shapes is arranged concentrically.

[0349] (15) A display device according to any one of (1), (2) and (6) to (12), wherein, The surface irregularities include multiple surface protrusions and multiple surface recesses, and The surface protrusions and surface recesses are arranged alternately along the direction of the boundary between the first region and the second region.

[0350] (16) A display device according to any one of (1) to (15), wherein, The second substrate is a polarizing plate.

[0351] (17) An electronic device comprising: The display device according to any one of (1) to (16).

[0352] Reference Symbol List

[0353] 10 Display devices

[0354] 13 First Electrode

[0355] 14 Organic layer

[0356] 15 Second electrode

[0357] 16 protective layers

[0358] 18 Color Filters

[0359] 19 First Color Filter

[0360] 20 Second color filter

[0361] 22 Lenses

[0362] 23. Peripheral shading area

[0363] 23A Inner edge

[0364] 28 First upper surface covering layer

[0365] 29 Second upper surface covering layer

[0366] 30 Surface irregularities

[0367] 33 First concave-convex part

[0368] 34 Second concave-convex part

[0369] 40 Three-dimensional structure

[0370] 44 slots

[0371] 50 Upper surface covering layer

[0372] 51. Concave and convex parts

[0373] 55. Uneven or concave portion

[0374] 56 Three-dimensional structure

[0375] 101 subpixels

[0376] 104 Light-emitting elements

[0377] 110 matrix

[0378] 111 First substrate

[0379] 112 Second substrate

[0380] 113 Adhesive layer

[0381] 114 polarizing plate

[0382] 115 Optical Lens

[0383] 310 Digital Still Camera

[0384] 320 Head-Mounted Display

[0385] 330 Television Unit

[0386] 340° Transparent Head-Mounted Display

[0387] 350 glasses

[0388] 360 Smartphone

[0389] 500 vehicles

[0390] AR1 First Area

[0391] AR2 Second Area

[0392] ER outer edge region

[0393] NR outer perimeter area

[0394] SR1 First Surrounding Area

[0395] SR2 Second Surrounding Area.

Claims

1. A display device comprising a display area, the display device comprising: The substrate includes a first substrate; The light-emitting element has a structure in which a first electrode, an organic layer, and a second electrode are sequentially stacked on the first substrate; A protective layer covers the light-emitting element; A color filter is formed on the upper side of the protective layer; and a peripheral light-shielding portion is formed on the outer side of the display area; The second substrate has a surface facing the substrate on which the light-emitting element is formed. as well as An adhesive layer is disposed between the substrate and the second substrate and bonds the substrate to the second substrate, wherein... In the plan view of the substrate, where the area from the inner edge of the peripheral light-shielding portion to the inner side is defined as a first region, and the area from the inner edge of the peripheral light-shielding portion to the outer side is defined as a second region, the substrate includes a first color filter disposed in the first region and a second color filter disposed in the second region and forming the peripheral light-shielding portion as the color filter. On the surface of the substrate, in the area that contacts the adhesive layer in the plan view of the substrate, and at least in the second area, surface irregularities are formed.

2. The display device according to claim 1, wherein, The substrate includes a first upper surface covering layer that covers the first color filter and the peripheral light-shielding portion and comprises an organic resin, and a second upper surface covering layer that covers the first upper surface covering layer and comprises an inorganic material. In the plan view of the substrate, the first upper surface covering layer includes a first uneven portion having a first uneven shape on the surface facing the second upper surface covering layer and in the second region. In the plan view of the substrate, the second upper surface cover layer includes a second uneven portion having a second uneven shape on the surface facing the adhesive layer, the second uneven shape being based on the first uneven shape of the first uneven portion, and The surface irregularities include the second irregularity.

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

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

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

6. The display device according to claim 2, wherein, The outer end face of the protective layer is positioned closer to the display area than the outer end face of the first substrate. In the plan view of the substrate, the first upper surface covering layer and the second upper surface covering layer cover the area where the protective layer is formed and extend to the outside of the protective layer. In the case where the area forming the protective layer in the second region is the first peripheral region, and the area outside the first peripheral region is defined as the second peripheral region, the first and second irregular portions are formed in the second peripheral region.

7. The display device according to claim 1, wherein, The substrate includes a first upper surface covering layer that covers the first color filter and the peripheral light-shielding portion and comprises an organic resin; and a second upper surface covering layer that covers the first upper surface covering layer and comprises an inorganic material. In the plan view of the substrate, the first upper surface covering layer includes a first uneven portion having a first uneven shape on the surface facing the second upper surface covering layer and in the second region. In the plan view of the substrate, a second uneven portion having a second uneven shape is formed on the surface facing the adhesive layer in the second upper surface cover layer, the second uneven shape being based on the first uneven shape of the first uneven portion. The peripheral light-shielding portion has a third uneven portion on the surface facing the first upper surface covering layer. The third uneven portion has a third uneven shape, which is an uneven shape determined according to the structure of the second color filter. The first concave-convex shape of the first concave-convex portion is based on the shape of the third concave-convex shape of the third concave-convex portion, and The surface irregularities are formed by the second irregularity.

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

9. The display device according to claim 1, wherein, The substrate includes a first upper surface covering layer that covers the first color filter and the peripheral light-shielding portion and comprises an organic resin, and a second upper surface covering layer that covers the first upper surface covering layer and comprises an inorganic material. The outer end face of the protective layer and the outer end face of the first upper surface cover layer are positioned closer to the display area than the outer end face of the first substrate. In the second region, if the region outside the formation area of ​​the protective layer and outside the formation area of ​​the first upper surface cover layer is defined as the outer edge region, then... The substrate includes a three-dimensional structure in the outer edge region, the three-dimensional structure including a third color filter as the color filter. The second upper surface cover layer includes a structural cover portion covering the three-dimensional structure, and At least a portion of the surface irregularities is formed in the structural cover.

10. The display device according to claim 1, wherein, The substrate includes a first upper surface covering layer that covers the first color filter and the peripheral light-shielding portion and comprises an organic resin; and a second upper surface covering layer that covers the first upper surface covering layer and comprises an inorganic material. The outer end face of the protective layer and the outer end face of the first upper surface cover layer are positioned closer to the display area than the outer end face of the first substrate. In the second region, if the region outside the formation area of ​​the protective layer and outside the formation area of ​​the first upper surface cover layer is defined as the outer edge region, then... A portion of the second upper surface covering layer is formed in the outer edge region. When the portion of the second upper surface covering layer formed in the outer edge region 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 portion of the surface irregularities.

11. The display device according to claim 1, wherein, The substrate includes an upper surface covering layer that covers the first color filter and the peripheral light-shielding portion and comprises an organic resin. In the plan view of the substrate, the upper surface cover layer includes uneven portions with a concave-convex shape on the surface facing the adhesive layer and at least in the second region. The surface irregularities are constructed from the irregularities.

12. The display device according to claim 1, wherein, In the substrate, the surface irregularities are formed on the surface of the peripheral light-shielding portion and are formed into an irregular shape determined according to the structure of the second color filter.

13. The display device according to claim 1, wherein, The surface irregularities include at least one of surface protrusions and surface recesses, comprising multiple unit-shaped portions. In the plan view of the substrate, at least one of the unit shape portions is arranged concentrically.

14. The display device according to claim 1, wherein, The surface irregularities include at least one of surface protrusions and surface recesses, comprising multiple unit shape portions, and multiple unit shape groups, each unit shape group comprising multiple unit shape portions. In the plan view of the substrate, at least one of the unit shape groups is arranged concentrically.

15. The display device according to claim 1, wherein, The surface irregularities include multiple surface protrusions and multiple surface recesses, and The surface protrusions and surface recesses are arranged alternately along the direction of 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