Display device and electronic apparatus

Abstract

Provided is a display device capable of suppressing deterioration of adhesion coverage of a protective layer at an end portion of a light shielding layer. The display device includes a light shielding layer surrounding a display region, a first peripheral layer surrounding the light shielding layer, and a protective layer covering the light shielding layer and the first peripheral layer. The shading layer comprises a first coloring layer and a second coloring layer arranged on the first coloring layer, and the height of the upper surface of the first peripheral layer is lower than that of the upper surface of the first coloring layer.

Description

Technical Field

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

[0002] As a display device, there are devices with a metal layer such as wiring or contact electrodes in the peripheral area of ​​the display area. In such display devices, visibility may deteriorate when external light is reflected by the aforementioned metal layer. Therefore, techniques are being investigated to suppress external light reflection caused by the aforementioned metal layer by placing a light-shielding layer above the aforementioned metal layer.

[0003] For example, Patent Document 1 discloses that by setting the protective part, which is composed of a red first layer, a green second layer and a blue third layer, to overlap with the peripheral wiring in the surrounding area when viewed from above, it is possible to block light shining on the peripheral wiring from the viewing side and the reflected light from the surface of the peripheral wiring.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2009-091716 Summary of the Invention

[0007] The technical problem that the invention aims to solve

[0008] However, steep steps are easily formed at the ends of the light-shielding layer. If such steep steps are covered with a protective layer, the adhesion and coverage of the protective layer at the ends of the light-shielding layer may deteriorate. Steep steps are particularly prone to form at the ends of light-shielding layers that include two or more coloring layers, and the adhesion and coverage of the protective layer at the ends of the light-shielding layer are particularly prone to deterioration.

[0009] The purpose of this disclosure is to provide a display device capable of suppressing the degradation of the adhesion and coverage of the protective layer at the end of the light-shielding layer, and an electronic device having the display device.

[0010] Solutions for solving technical problems

[0011] To solve the above-mentioned technical problems, the display device disclosed herein includes:

[0012] A light-shielding layer surrounds the display area;

[0013] The first peripheral layer surrounds the light-shielding layer; and

[0014] A protective layer, covering the light-shielding layer and the first peripheral layer.

[0015] The light-shielding layer includes a first coloring layer and a second coloring layer, wherein the second coloring layer is disposed on the first coloring layer.

[0016] The height of the upper surface of the first peripheral layer is lower than the height of the upper surface of the first coloring layer.

[0017] The display device disclosed herein includes:

[0018] A light-shielding layer surrounds the display area;

[0019] Multiple peripheral layers, having a concentric shape surrounding the light-shielding layer; and

[0020] A protective layer, covering a light-shielding layer and multiple surrounding layers.

[0021] The spacing between multiple peripheral layers widens as they move away from the display area, or the width of multiple peripheral layers narrows as they move away from the display area.

[0022] The display device disclosed herein includes:

[0023] A light-shielding layer surrounds the display area;

[0024] Multiple peripheral layers, having a concentric shape surrounding the light-shielding layer; and

[0025] A protective layer, covering a light-shielding layer and multiple surrounding layers.

[0026] Multiple peripheral layers include multiple segmented peripheral layers that are divided circumferentially in the display area.

[0027] Regarding the number of segmentation parts in multiple segmentation perimeter layers, the farther away from the display area, the more segmentation perimeter layers there are.

[0028] The electronic device disclosed herein includes any one of the aforementioned display devices. Attached Figure Description

[0029] Figure 1 This is a top view of the display device according to the first embodiment.

[0030] Figure 2 It is along Figure 1 A sectional view along line II-II.

[0031] Figure 3 This is a top view of the light-shielding layer and the surrounding layers.

[0032] Figure 4 It is an enlarged cross-sectional view showing the periphery of the light-shielding layer and its vicinity.

[0033] Figure 5 This is a cross-sectional view of the display device according to the second embodiment.

[0034] Figure 6 It is a top view of the light-shielding layer and multiple surrounding layers.

[0035] Figure 7 This is a cross-sectional view of the display device involved in the variation example.

[0036] Figure 8 This is a cross-sectional view of the display device involved in the variation example.

[0037] Figure 9 This is a cross-sectional view of the display device involved in the variation example.

[0038] Figure 10 This is a cross-sectional view of the display device involved in the variation example.

[0039] Figure 11 This is a cross-sectional view of the display device involved in the variation example.

[0040] Figure 12 This is a cross-sectional view of the display device involved in the variation example.

[0041] Figure 13 It is a top view of the light-shielding layer and multiple surrounding layers.

[0042] Figure 14 This is a cross-sectional view of the display device involved in the variation example.

[0043] Figure 15 This is a cross-sectional view of the display device involved in the variation example.

[0044] Figure 16 This is a cross-sectional view of the display device involved in the variation example.

[0045] Figure 17 This is a cross-sectional view of the display device involved in the variation example.

[0046] Figure 18 It is a top view of the light-shielding layer and multiple surrounding layers.

[0047] Figure 19 This is a cross-sectional view of the display device involved in the variation example.

[0048] Figure 20 This is a top view of the light-shielding layer and the surrounding layers.

[0049] Figure 21 It is a top view of the light-shielding layer and multiple surrounding layers.

[0050] Figure 22 It is a top view of the light-shielding layer and multiple surrounding layers.

[0051] Figure 23 This is a cross-sectional view of the display device involved in the variation example.

[0052] Figure 24 A, Figure 24 B Figure 24C are conceptual diagrams used to illustrate the relationship between the normal LN passing through the center of the light-emitting part, the normal LN' passing through the center of the lens component, and the normal LN' passing through the center of the wavelength selection part.

[0053] Figure 25 This is a conceptual diagram used to illustrate the relationship between the normal LN passing through the center of the light-emitting part, the normal LN' passing through the center of the lens component, and the normal LN' passing through the center of the wavelength selection part.

[0054] Figure 26 A, Figure 26 B are conceptual diagrams used to illustrate the relationship between the normal LN passing through the center of the light-emitting part, the normal LN' passing through the center of the lens component, and the normal LN' passing through the center of the wavelength selection part.

[0055] Figure 27 This is a conceptual diagram used to illustrate the relationship between the normal LN passing through the center of the light-emitting part, the normal LN' passing through the center of the lens component, and the normal LN' passing through the center of the wavelength selection part.

[0056] Figure 28 A is a schematic cross-sectional view used to illustrate the first example of a resonator structure. Figure 28 B is a schematic cross-sectional view used to illustrate a second example of a resonator structure.

[0057] Figure 29 A is a schematic cross-sectional view used to illustrate the third example of a resonator structure. Figure 29 B is a schematic cross-sectional view used to illustrate the fourth example of a resonator structure.

[0058] Figure 30 A is a schematic cross-sectional view used to illustrate the fifth example of a resonator structure. Figure 30 B is a schematic cross-sectional view used to illustrate the sixth example of a resonator structure.

[0059] Figure 31 This is a schematic cross-sectional view used to illustrate the seventh example of a resonator structure.

[0060] Figure 32 A is the front view of the digital camera. Figure 32 B is the rear view of the digital camera.

[0061] Figure 33 It is a stereoscopic image of a head-mounted display.

[0062] Figure 34 It is a 3D diagram of a television set.

[0063] Figure 35 It is a stereoscopic image of a see-through head-mounted display.

[0064] Figure 36 It's a 3D image of a smartphone.

[0065] Figure 37 A is a diagram showing the interior of a vehicle from the rear to the front. Figure 37 Figure B shows the interior of the vehicle from the diagonal rear to the diagonal front. Detailed Implementation

[0066] The embodiments of this disclosure will be described in the following order.

[0067] 1. Description relating to the display device as a whole in this disclosure

[0068] 2. First Embodiment (Example of a Display Device)

[0069] 3. Second Embodiment (Example of a Display Device)

[0070] 4 variations

[0071] 5. The relationship between the normals passing through the centers of the light-emitting part, the lens component, and the wavelength selection part.

[0072] 6 Examples of resonator structures

[0073] 7 Application Examples (Examples of electronic devices)

[0074] The embodiments described below are preferred examples of this disclosure, and the content of this disclosure is not limited to these embodiments. It should be noted that in the following description, components with substantially the same functional configuration are labeled with the same reference numerals, and repetitive descriptions are appropriately omitted. Furthermore, to avoid cluttering the illustrations, there are cases where only a portion of the components are labeled with reference numerals, or where the illustrations are simplified, enlarged, or reduced in size.

[0075] <1. Description relating to the display device as a whole in this disclosure>

[0076] The display device disclosed herein includes a light-shielding layer surrounding a display area, a first peripheral layer surrounding the light-shielding layer, and a protective layer covering the light-shielding layer and the first peripheral layer. The light-shielding layer includes a first coloring layer and a second coloring layer disposed on the first coloring layer. The height of the upper surface of the first peripheral layer is lower than the height of the upper surface of the first coloring layer.

[0077] As described above, by making the height of the upper surface of the first peripheral layer lower than the height of the upper surface of the first coloring layer, a height difference (step) can be formed between the upper surface of the first peripheral layer and the upper surface of the light-shielding layer, thus allowing the protective layer to gradually descend near the outer end of the light-shielding layer. Therefore, it is possible to suppress the deterioration of the adhesion and coverage of the protective layer at the outer end of the light-shielding layer.

[0078] Preferably, the first peripheral layer is made of the same material as the second coloring layer. This allows the first peripheral layer to be formed using the same process as the second coloring layer. More preferably, the first peripheral layer is made of the same material as the second coloring layer and has approximately the same thickness as the second coloring layer, which is thinner than the first coloring layer. This allows the first peripheral layer to be formed more easily using the same process as the second coloring layer. In this disclosure, "approximately the same thickness" is defined to include the same thickness.

[0079] Preferably, the outer end of the second coloring layer is recessed to a position further inward than the outer end of the first coloring layer. This creates a height difference (step) between the upper surfaces of the first and second coloring layers, thus preventing the outer end of the light-shielding layer from becoming too steep.

[0080] The preferred light-shielding layer includes a third coloring layer disposed on the second coloring layer, wherein the outer end of the third coloring layer is recessed to a position further inward than the outer end of the second coloring layer. Thus, since a height difference (step) can be formed between the upper surface of the second coloring layer and the upper surface of the third coloring layer, the outer end of the light-shielding layer can be prevented from becoming steep.

[0081] A preferred display device further includes a second peripheral layer surrounding the first peripheral layer. The first peripheral layer is made of the same material as the second coloring layer, and the second peripheral layer is made of the same material as the third coloring layer. Therefore, the first peripheral layer can be formed using the same process as the second coloring layer, and the second peripheral layer can be formed using the same process as the third coloring layer. A more preferred display device further includes a second peripheral layer surrounding the first peripheral layer. The first peripheral layer is made of the same material as the second coloring layer and has approximately the same thickness as the second coloring layer. The second peripheral layer is made of the same material as the third coloring layer and has approximately the same thickness as the third coloring layer. The thickness of the second coloring layer is thinner than the thickness of the first coloring layer, and the thickness of the third coloring layer is thinner than the thickness of the second coloring layer. Therefore, the first peripheral layer can be formed more easily using the same process as the second coloring layer, and the second peripheral layer can be formed more easily using the same process as the third coloring layer.

[0082] The preferred display device further includes a second peripheral layer surrounding the first peripheral layer, the upper surface of which is lower than the upper surface of the first peripheral layer. This allows the protective layer to gradually descend near the outer end of the light-shielding layer.

[0083] The preferred display device further includes a second peripheral layer surrounding the first peripheral layer, which is divided circumferentially in the display area. Therefore, since the protective layer forming material can be introduced into the divided portions of the second peripheral layer during the protective layer forming process, the protective layer can gradually descend near the outer end of the light-shielding layer.

[0084] The preferred marking device further includes a second peripheral layer surrounding the first peripheral layer. The first and second peripheral layers are divided circumferentially in the display area, with the second peripheral layer having more division points than the first peripheral layer. Therefore, during the protective layer formation process, the amount of protective layer forming material entering the division points of the second peripheral layer is greater than the amount entering the division points of the first peripheral layer. This allows the protective layer to gradually descend near the outer end of the light-shielding layer.

[0085] The preferred display device further includes a third peripheral layer disposed on a platform portion. This platform portion is formed by the outer end of the second coloring layer being recessed to a position more inward than the outer end of the first coloring layer. The third peripheral layer is also recessed to a position more inward than the outer end of the first coloring layer, and the height of the upper surface of the third peripheral layer is lower than the height of the upper surface of the second coloring layer. This creates a height difference (step) between the upper surface of the third peripheral layer and the upper surface of the second coloring layer, and also between the upper surface of the third peripheral layer and the upper surface of the first coloring layer. Therefore, it is possible to prevent the outer end of the light-shielding layer from becoming too steep.

[0086] A preferred display device further includes a planarization layer disposed between a light-shielding layer and a protective layer, wherein the third peripheral layer is made of the same material as the planarization layer. Therefore, the third peripheral layer can be formed using the same process as the planarization layer. A more preferred display device further includes a planarization layer disposed between a light-shielding layer and a protective layer, wherein the third peripheral layer is made of the same material as the planarization layer and has approximately the same thickness as the planarization layer, and the thickness of the planarization layer is thinner than the thickness of the second coloring layer. Therefore, the third peripheral layer can be formed more easily using the same process as the planarization layer.

[0087] The preferred display device further includes a planarization layer disposed between the light-shielding layer and the protective layer, the end of which is recessed further inward than the outer end of the second coloring layer. Therefore, since a height difference (step) can be formed between the upper surface of the second coloring layer and the upper surface of the planarization layer, the formation of steep ends through the light-shielding layer and the planarization layer can be suppressed.

[0088] Preferably, the first peripheral layer is made of the same material as the planarization layer. This allows the first peripheral layer to be formed using the same process as the planarization layer. More preferably, the first peripheral layer is made of the same material as the planarization layer and has approximately the same thickness as the planarization layer, wherein the thickness of the planarization layer is thinner than the thickness of the first coloring layer. This allows the first peripheral layer to be formed more easily using the same process as the planarization layer.

[0089] A preferred display device further includes a second peripheral layer surrounding the first peripheral layer. The first peripheral layer is made of the same material as the second coloring layer, and the second peripheral layer is made of the same material as the planarization layer. Therefore, the first peripheral layer can be formed using the same process as the second coloring layer, and the second peripheral layer can be formed using the same process as the planarization layer. A more preferred display device further includes a second peripheral layer surrounding the first peripheral layer. The first peripheral layer is made of the same material as the second coloring layer and has approximately the same thickness as the second coloring layer. The second peripheral layer is made of the same material as the planarization layer and has approximately the same thickness as the planarization layer. The thickness of the second coloring layer is thinner than the thickness of the first coloring layer, and the thickness of the planarization layer is thinner than the thickness of the second coloring layer. Therefore, the first peripheral layer can be formed more easily using the same process as the second coloring layer, and the second peripheral layer can be formed more easily using the same process as the planarization layer.

[0090] The preferred display device further includes a planarization layer disposed between the light-shielding layer and the protective layer, the planarization layer covering the outer end of the light-shielding layer and the first peripheral layer, and the planarization layer comprising a positive photosensitive resin composition. Since the positive photosensitive resin composition is easier to form a positive taper than the negative photosensitive resin composition, it is easier to make the end of the planarization layer smooth.

[0091] Preferably, the first peripheral layer and the light-shielding layer form a stepped shape of three or more levels that decreases with distance from the display area. Therefore, by forming a protective layer in a manner that mimics the stepped shape, the protective layer can gradually decrease at and near the outer end of the light-shielding layer. Here, the number of steps is counted based on the surface where the first peripheral layer is formed.

[0092] The display device disclosed herein includes a light-shielding layer surrounding a display area, a plurality of concentric peripheral layers surrounding the light-shielding layer, and a protective layer covering the light-shielding layer and the plurality of peripheral layers. The spacing between the plurality of peripheral layers widens as it moves away from the display area to the outside, or the width of the plurality of peripheral layers narrows as it moves away from the display area to the outside.

[0093] As described above, when the spacing between the multiple peripheral layers widens as it moves away from the display area, the amount of protective layer forming material entering the space between the peripheral layers increases as it moves away from the display area. Therefore, the protective layer can gradually descend near the outer end of the light-shielding layer. This helps to suppress the deterioration of the protective layer's adhesion and coverage at the end of the light-shielding layer.

[0094] As described above, when the width of the multiple peripheral layers narrows as they move away from the display area, the amount of protective layer forming material placed on the upper surface of the peripheral layers decreases as it moves away from the display area. Therefore, the protective layer can gradually descend near the outer end of the light-shielding layer. This suppresses the deterioration of the protective layer's adhesion and coverage at the end of the light-shielding layer.

[0095] The preferred light-shielding layer includes a first coloring layer and a second coloring layer disposed on the first coloring layer, and a plurality of peripheral layers are made of the same material as the first coloring layer. Thus, the first coloring layer and the plurality of peripheral layers can be formed in the same process.

[0096] Preferably, the height of the multiple peripheral layers decreases as they move away from the display area. As a result, since a height difference (step) can be formed between adjacent peripheral layers, it is easy for the protective layer to gradually decrease near the outer end of the light-shielding layer.

[0097] The display device disclosed herein includes a light-shielding layer surrounding a display area, a plurality of concentric peripheral layers surrounding the light-shielding layer, and a protective layer covering the light-shielding layer and the plurality of peripheral layers. The plurality of peripheral layers include a plurality of segmented peripheral layers divided in the circumferential direction of the display area. Regarding the number of segmented portions of the plurality of segmented peripheral layers, the further away from the display area, the more segmented peripheral layers there are.

[0098] As described above, the multiple peripheral layers include multiple segmented peripheral layers divided circumferentially in the display area. Regarding the number of segmented portions of the multiple segmented peripheral layers, the farther away from the display area, the more segmented peripheral layers there are. Therefore, during the protective layer formation process, the amount of protective layer forming material entering the segmented portions of the peripheral layers increases as it moves away from the display area. Thus, the protective layer can gradually descend near the outer end of the light-shielding layer. Therefore, it is possible to suppress the deterioration of the adhesion and coverage of the protective layer at the end of the light-shielding layer.

[0099] The light-shielding layer may also include two or three colored layers. Two colored layers may include a first colored layer and a second colored layer disposed on the first colored layer. Preferably, the first and second colored layers have different colors. Preferably, the combination of the colors of the first and second colored layers is red and blue. By selecting this color combination, the light-shielding properties of the light-shielding layer against visible light can be improved. Furthermore, the light-shielding layer can be formed using the same process as the color filter for the display area.

[0100] The three-layer coloring layer may also include a first coloring layer, a second coloring layer disposed on the first coloring layer, and a third coloring layer disposed on the second coloring layer. Preferably, the first, second, and third coloring layers have different colors. By selecting this color combination, the light-shielding properties of the light-shielding layer to visible light can be improved. In addition, the light-shielding layer can be formed using the same process as the color filter for the display area.

[0101] In this disclosure, "upper surface" refers to the surface on the display side of the display device. In this disclosure, "height of the upper surface" refers to the height based on the surface where the light-shielding layer is provided. For example, when the light-shielding layer is provided on the upper surface of the planarization layer or the upper surface of the protective layer, "height of the upper surface" refers to the height based on the upper surface of the planarization layer or the upper surface of the protective layer.

[0102] In this disclosure, the descriptions of the outer end of the light-shielding layer, the outer end of the first coloring layer, the outer end of the second coloring layer, and the outer end of the third coloring layer, etc., indicate that the "outer end" is the end located on the outer side when viewed from the display area. In the descriptions of being inside the outer end of the first coloring layer and inside the outer end of the second coloring layer, etc., the "inner side" indicates that the end is located on the inner side when viewed from the display area.

[0103] In this disclosure, the light-shielding layer (or the first coloring layer) and the first peripheral layer can be either separate or connected. The first peripheral layer and the second peripheral layer can be either separate or connected. The third peripheral layer and the second coloring layer can be either separate or connected.

[0104] The display device disclosed herein can also be an electronic device. For example, the display device disclosed herein can be a VR (Virtual Reality) device, MR (Mixed Reality) device, or AR (Augmented Reality) device, or it can be an electronic viewfinder (EVF) or a small projector.

[0105] <2 First Implementation>

[0106] [Configuration of display device 101]

[0107] Figure 1 This is a top view of the display device 101 according to the first embodiment. Figure 2 It is along Figure 1 A cross-sectional view along line II-II. The display device 101 can also be a top-emitting OLED display device. The display device 101 can also be a microdisplay. For example... Figure 1 As shown, the display device 101 has a display area RE1 and a peripheral area RE2 disposed around the display area RE1.

[0108] Multiple sub-pixels 10R, 10G, and 10B are arranged two-dimensionally within the display area RE1 in a prescribed configuration pattern. The prescribed configuration pattern can also be a stripe arrangement, mosaic arrangement, square arrangement, Delta arrangement, or other arrangements. Pad portion 101A and a driver for image display (not shown) are disposed in the peripheral area RE2. A flexible printed circuit board (FPC) (not shown) can also be connected to the pad portion 101A.

[0109] Subpixel 10R emits red light (first light). Subpixel 10G emits green light (second light). Subpixel 10B emits blue light (third light). In the following description, without specifically distinguishing between subpixels 10R, 10G, and 10B, they are collectively referred to as subpixel 10. A pixel (one pixel cell) is, for example, composed of multiple adjacent subpixels 10R, 10G, and 10B. However, the composition of a pixel is not limited to this example; for example, a pixel may also be composed of multiple adjacent subpixels 10R, 10G, 10B, and 10B.

[0110] like Figure 2 As shown, the display device 101 includes a driving substrate 11, multiple light-emitting elements 12W, contact electrodes 124, an insulating layer 13, a protective layer 14, a planarization layer 15, a color filter 16, a light-shielding layer 17FBK, a peripheral layer 18, a planarization layer 19, and a protective layer 20. The planarization layer 15 and the planarization layer 19 are layers that are included as needed, and may or may not be included.

[0111] In this specification, the surface that forms the display surface (top side) of each layer of the display device 101 is referred to as the first surface (upper surface), and the surface that forms the opposite side (bottom side) of the display device 101 is referred to as the second surface (lower surface). In this specification, the peripheral or outer peripheral portion of the first surface refers to an area extending inward from the peripheral edge of the first surface and having a predetermined width; the peripheral or outer peripheral portion of the second surface refers to an area extending inward from the peripheral edge of the second surface and having a predetermined width. In this specification, "top view" refers to a view of an object from a direction perpendicular to the first or second surface. In this specification, unless otherwise explicitly stated, "A is outside B" means that A is outside B when viewed from the display area RE1, and "A is inside B" means that A is inside B when viewed from the display area RE1. In this instruction manual, unless otherwise explicitly stated, "A is backed up to a position more inward than B" means that when viewed from display area RE1, A is backed up to a position more inward than B.

[0112] (Driver substrate 11)

[0113] The driving substrate 11 is a so-called backplane and is capable of driving multiple light-emitting elements 12W. The driving substrate 11 includes, for example, a substrate and an insulating layer in sequence.

[0114] Multiple drive circuits (not shown) and multiple wirings (not shown) may also be disposed on the first surface of the substrate. The substrate may be, for example, a semiconductor substrate that easily forms transistors, or a glass substrate or resin substrate with low permeability to moisture and oxygen. Semiconductor substrates include, for example, amorphous silicon, polycrystalline silicon, or monocrystalline silicon. Glass substrates include, for example, high strain point glass, soda-lime glass, borosilicate glass, magnesium olivine, lead glass, or quartz glass. Resin substrates include, for example, at least one selected from the group consisting of polymethyl methacrylate, polyvinyl alcohol, polyvinylphenol, polyethersulfone, polyimide, polycarbonate, polyethylene terephthalate, and polyethylene naphthalate.

[0115] An insulating layer may also be disposed on the first surface of the substrate, covering multiple driving circuits and multiple wirings, and planarizing them. The insulating layer may also insulate the multiple driving circuits and multiple wirings disposed on the first surface of the substrate from the multiple light-emitting elements 12W. The multiple wirings may also be connected to the pad portion 101A.

[0116] The insulating layer can be an organic insulating layer, an inorganic insulating layer, or a laminate thereof. Organic insulating layers include, for example, at least one selected from the group consisting of polyimide resins, acrylic resins, and phenolic resins. Inorganic insulating layers include, for example, silicon dioxide (SiO₂). x ), silicon nitride (SiN) x ) and silicon oxynitride (SiO) xN y It is at least one of the groups consisting of , etc.

[0117] The insulating layer has multiple contacts (not shown) inside. Multiple contacts located in the display area RE1 electrically connect the light-emitting element to the wiring. Multiple contacts located in the peripheral area RE2 electrically connect the contact electrode 124 to the wiring. The contacts may contain at least one metal selected from the group consisting of copper (Cu) and titanium (Ti).

[0118] (12W LED)

[0119] The light-emitting element 12W is capable of emitting white light based on the control of driving circuitry and other components. The light-emitting element 12W can be an OLED element. The OLED element can be a Micro-OLED (M-OLED) element. The light-emitting element 12W is included in sub-pixels 10R, 10G, and 10B of various colors.

[0120] Multiple light-emitting elements 12W are arranged two-dimensionally on the first surface of the driving substrate 11 in a predetermined configuration pattern. The predetermined configuration pattern is as described above for the multiple sub-pixels 10. The light-emitting elements 12W sequentially include a first electrode 121, an OLED layer 122, and a second electrode 123 on the first surface of the driving substrate 11.

[0121] (First electrode 121)

[0122] The first electrode 121 is disposed on the second surface side of the OLED layer 122. The first electrode 121 is a separate electrode disposed individually among the plurality of light-emitting elements 12W within the display area RE1. That is, within the display area RE1, the first electrode 121 is separated between adjacent light-emitting elements 12W in the in-plane direction along the first surface of the driving substrate 11. The first electrode 121 is the anode. When a voltage is applied between the first electrode 121 and the second electrode 123, holes are injected from the first electrode 121 into the OLED layer 122.

[0123] The first electrode 121 can be composed of either a metal layer or a metal layer and a transparent conductive oxide layer. When the first electrode 121 is composed of a metal layer and a transparent conductive oxide layer, from the viewpoint of placing a layer with a high work function adjacent to the OLED layer 122, it is preferable to provide the transparent conductive oxide layer on the OLED layer 122 side.

[0124] The metal layer can also function as a reflective layer that reflects light emitted by the OLED layer 122. The metal layer may contain 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 the aforementioned metallic elements as a constituent element of an alloy. Specific examples of alloys include aluminum alloys or silver alloys. Specific examples of aluminum alloys include, for example, AlNd or AlCu.

[0125] The substrate layer (not shown) may also be positioned adjacent to the second side of the metal layer. The substrate layer may also enhance the crystal orientation of the metal layer during film formation. For example, the substrate layer may contain at least one metallic element selected from the group consisting of titanium (Ti) and tantalum (Ta). The substrate layer may contain at least one of the aforementioned metallic elements as a constituent element of the alloy.

[0126] The transparent conductive oxide layer comprises a transparent conductive oxide. The transparent conductive oxide includes, for example, at least one selected from the group consisting of transparent conductive oxides containing indium (hereinafter referred to as "indium-based transparent conductive oxides"), transparent conductive oxides containing tin (hereinafter referred to as "tin-based transparent conductive oxides"), and transparent conductive oxides containing zinc (hereinafter referred to as "zinc-based transparent conductive oxides").

[0127] Indium-based transparent conductive oxides include, for example, indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), indium gallium zinc oxide (IGZO), or fluorine-doped indium oxide (IFO). Among these transparent conductive oxides, indium tin oxide (ITO) is particularly preferred. This is because, in terms of work function, the hole injection barrier to the OLED layer 122 of indium tin oxide (ITO) is particularly low, thus enabling a particularly low driving voltage for the display device 101. Tin-based transparent conductive oxides include, for example, tin oxide, antimony-doped tin oxide (ATO), or fluorine-doped tin oxide (FTO). Zinc-based transparent conductive oxides include, for example, zinc oxide, aluminum-doped zinc oxide (AZO), boron-doped zinc oxide, or gallium-doped zinc oxide (GZO).

[0128] (OLED layer 122)

[0129] The OLED layer 122 is capable of emitting white light. The OLED layer 122 is disposed between a plurality of first electrodes 121 and a second electrode 123. Within the display area RE1, the OLED layer 122 is connected between adjacent light-emitting elements 12W in the in-plane direction along the first surface of the driving substrate 11, and is a common layer among the plurality of light-emitting elements 12W within the display area RE1.

[0130] The OLED layer 122 may also be composed of a stack including an organic light-emitting layer, in which case a portion of the stack (e.g., an electron injection layer) may be an inorganic layer. The OLED layer 122 may be an OLED layer with a single light-emitting unit, an OLED layer with two light-emitting units (tandem structure), or an OLED layer with other structures. An OLED layer with a single light-emitting unit may, for example, be formed by stacking a hole injection layer, a hole transport layer, a red light-emitting layer, a light-emitting separation layer, a blue light-emitting layer, a green light-emitting layer, an electron transport layer, and an electron injection layer from the first electrode 121 to the second electrode 123 in this order. An OLED layer with two light-emitting units may, for example, be formed by stacking a hole injection layer, a hole transport layer, a blue light-emitting layer, an electron transport layer, a charge generation layer, a hole transport layer, a yellow light-emitting layer, an electron transport layer, and an electron injection layer from the first electrode 121 to the second electrode 123 in this order.

[0131] The hole injection layer improves the hole injection efficiency to each emissive layer and suppresses leakage. The hole transport layer improves the hole transport efficiency to each emissive layer. The electron injection layer improves the electron injection efficiency to each emissive layer. The electron transport layer improves the electron transport efficiency to each emissive layer. The light emission separation layer is used to adjust the injection of charge carriers into each emissive layer, and adjusts the light emission balance of each color by injecting electrons and holes into each emissive layer via the light emission separation layer. The charge generation layer can supply electrons and holes to the two emissive layers sandwiched by the charge generation layer.

[0132] In the red, green, blue, and yellow light-emitting layers, an electric field is applied to induce recombination between holes injected from the first electrode 121 or the charge generation layer and electrons injected from the second electrode 123 or the charge generation layer, thereby emitting red, green, blue, and yellow light, respectively.

[0133] (Second electrode 123)

[0134] The second electrode 123 is disposed on the first surface side of the OLED layer 122. Within the display area RE1, the second electrode 123 is connected to adjacent light-emitting elements 12W in the in-plane direction along the first surface of the driving substrate 11, and is a common electrode among the multiple light-emitting elements 12W within the display area RE1. The second electrode 123 extends from the display area RE1 to the peripheral area RE2. The peripheral edge of the second surface of the second electrode 123 is connected to the first surface of the contact electrode 124.

[0135] The second electrode 123 is a cathode. When a voltage is applied between the first electrode 121 and the second electrode 123, electrons are injected into the OLED layer 122 from the second electrode 123. The second electrode 123 is transparent to white light emitted from the OLED layer 122. Preferably, the second electrode 123 is a transparent electrode that is transparent to visible light. In this specification, visible light refers to light with a wavelength range of 360 nm and above, but not exceeding 830 nm.

[0136] The second electrode 123 is made of a material with the highest possible light transmittance and the lowest work function, which is preferred for improving luminous efficiency. The second electrode 123 may be composed of at least one layer, such as a metal layer or a transparent conductive oxide layer. More specifically, the second electrode 123 may be a single-layer film of a metal layer or a transparent conductive oxide layer, or a laminated film of a metal layer and a transparent conductive oxide layer. When the second electrode 123 is a laminated film, either the metal layer or the transparent conductive oxide layer may be disposed on the OLED layer 122 side; however, from the viewpoint of placing a layer with a low work function adjacent to the OLED layer 122, it is preferable that the metal layer be disposed on the OLED layer 122 side.

[0137] The metal layer may contain at least one metallic element selected from the group consisting of magnesium (Mg), aluminum (Al), silver (Ag), calcium (Ca), and sodium (Na). The metal layer may also contain at least one of these metallic elements as a constituent element of the alloy. Specific examples of alloys include MgAg alloys, MgAl alloys, or AlLi alloys. The transparent conductive oxide layer comprises a transparent conductive oxide. Examples of this transparent conductive oxide include materials similar to the transparent conductive oxide of the first electrode 121 described above.

[0138] (Contact electrode 124)

[0139] A contact electrode 124 is disposed on a first surface of the drive substrate 11 in the peripheral region RE2. The contact electrode 124 is an auxiliary electrode connecting the second electrode 123 and wiring (not shown) within the drive substrate 11. The first surface of the contact electrode 124 is electrically connected to the periphery of the second surface of the second electrode 123. On the other hand, the second surface of the contact electrode 124 is connected to the wiring via a plurality of contact portions, etc.

[0140] Viewed from above, the contact electrode 124 can be either a closed loop that surrounds the entire periphery of the display area RE1, or a loop that surrounds the periphery of the display area RE1 and is divided at one or more locations.

[0141] The contact electrode 124 is formed, for example, by at least one layer of a metal layer and a metal oxide layer. More specifically, for example, the contact electrode 124 is formed by a single layer of a metal layer or a metal oxide layer, or a laminate of a metal layer and a metal oxide layer. Preferably, the contact electrode 124 has the same configuration as the first electrode 121 described above. In this case, since the first electrode 121 and the contact electrode 124 can be formed in the same process, the manufacturing process of the display device 101 can be simplified.

[0142] The material used in the contact electrode 124 can be the same as that used in the first electrode 121. Specifically, the material used in the metal layer of the contact electrode 124 can be the same as that used in the metal layer of the first electrode 121, and the material used in the metal oxide layer of the contact electrode 124 can be the same as that used in the metal oxide layer of the first electrode 121.

[0143] The substrate layer (not shown) may also be configured to be adjacent to the second side of the metal layer. The same material as the substrate layer of the first electrode 121 described above can be used as the material comprising the substrate layer.

[0144] (Insulation layer 13)

[0145] An insulating layer 13 is disposed on a portion of the first surface of the driving substrate 11 between the separated first electrodes 121. The insulating layer 13 provides insulation between adjacent first electrodes 121 in the in-plane direction of the first surface of the driving substrate 11. The insulating layer 13 has a plurality of first openings 131. The plurality of first openings 131 are respectively disposed corresponding to each light-emitting element 12W. The plurality of first openings 131 may also be disposed on the first surface (the surface on the side of the OLED layer 122) of each first electrode 121. The first electrode 121 and the OLED layer 122 are in contact through the first openings 131.

[0146] An insulating layer 13 is also disposed on the first surface of the drive substrate 11, between the first electrode 121 and the contact electrode 124. The insulating layer 13 provides insulation between the first electrode 121 and the contact electrode 124. The insulating layer 13 has a second opening 132. The second opening 132 is disposed corresponding to the contact electrode 124. The second opening 132 may also be disposed on the first surface of the contact electrode 124 (the surface connected to the peripheral portion of the second electrode 123). The peripheral portion of the contact electrode 124 and the second electrode 123 are in contact through the second opening 132. The second opening 132 may also have the same annular shape as the contact electrode 124.

[0147] The insulating layer 13 can be an organic insulating layer, an inorganic insulating layer, or a laminate thereof. An organic insulating layer may include, for example, at least one selected from the group consisting of polyimide resins, acrylic resins, and phenolic resins. An inorganic insulating layer may include, for example, silicon dioxide (SiO2). x ), silicon nitride (SiN) x ) and silicon oxynitride (SiO) x N y It is at least one of the groups consisting of , etc.

[0148] (Protective layer 14)

[0149] A protective layer 14 is disposed on the first surface of the second electrode 123 and covers a plurality of light-emitting elements 12W. The protective layer 14 is transparent to white light emitted from the light-emitting elements 12W. Preferably, the protective layer 14 is transparent to visible light. The protective layer 14 can protect the plurality of light-emitting elements 12W, etc. For example, the protective layer 14 can prevent moisture from seeping into the plurality of light-emitting elements 12W from the external environment. In addition, when the second electrode 123 is composed of a metal layer, the protective layer 14 can also have the function of inhibiting the oxidation of the metal layer.

[0150] The protective layer 14 may comprise, for example, an inorganic or organic material with low hygroscopicity. The protective layer 14 can be a single-layer or multi-layer structure. When increasing the thickness of the protective layer 14, a multi-layer structure is preferred. This is to mitigate internal stresses within the protective layer 14. Inorganic materials may include, for example, silicon dioxide (SiO2). x ), silicon nitride (SiN) x ), silicon nitride (SiO) x N y Titanium oxide (TiO) x ) and aluminum oxide (AlO x At least one of the groups consisting of, etc. Organic materials include, for example, cured products of at least one resin selected from the group consisting of thermosetting resins and ultraviolet-curing resins. Specifically, organic materials include, for example, at least one selected from the group consisting of acrylic resins, polyimide resins, phenolic resins, epoxy resins, norbornene resins, and parylene resins.

[0151] Preferably, the protective layer 14 comprises a deposited layer containing a monolayer. The deposited layer can also be an ALD (Atomic Layer Deposition) layer. By including a deposited layer in the protective layer 14, the inhibitory effect of the protective layer 14 on water intrusion can be improved. The deposited layer may, for example, contain metal oxides or metal nitrides. Metal oxides may, for example, include aluminum oxide (Al₂O₃). x ) or titanium dioxide (TiO) xMetal nitrides, for example, include titanium nitride (TiN). x ).

[0152] (Planarization layer 15)

[0153] A planarization layer 15 is disposed on the first surface of the protective layer 14. The planarization layer 15 is capable of filling in the unevenness of the first surface of the protective layer 14 and forming a flat first surface above the protective layer 14. The planarization layer 15 is transparent to white light emitted from the light-emitting element 12W. Preferably, the planarization layer 15 is transparent to visible light. The planarization layer 15 comprises, for example, an inorganic material or an organic material. As an inorganic material, the same material as the inorganic material of the protective layer 14 can be exemplified. As an organic material, the same material as the organic material of the protective layer 14 can be exemplified.

[0154] Organic materials may also include cured forms of photosensitive resin compositions. Photosensitive resin compositions may also include either positive or negative photosensitive resin compositions. Specific examples of photosensitive resin compositions include at least one selected from the group consisting of polyimides, polyimide precursors, polybenzoxazoles, polybenzoxazole precursors, acrylic resins, phenolic resins, and siloxane resins, but are not limited to these materials.

[0155] (Filter 16)

[0156] A color filter 16 is disposed above the plurality of light-emitting elements 12W. More specifically, the color filter 16 is disposed on the first surface of the planarization layer 15 in the display area RE1. The color filter 16 is, for example, an on-chip color filter (OCCF). The color filter 16 includes, for example, a plurality of color layers 16FR, a plurality of color layers 16FG, and a plurality of color layers 16FB. It should be noted that in the following description, without specifically distinguishing between color layers 16FR, color layers 16FG, and color layers 16FB, they are collectively referred to as color layer 16F.

[0157] Multiple color layers 16F are arranged two-dimensionally on the first surface of the planarization layer 15 in a predetermined configuration pattern. The predetermined configuration pattern is as described in the predetermined configuration pattern of multiple sub-pixels 10. Each color layer 16F is disposed above the light-emitting element 12W. Sub-pixel 10R is composed of the light-emitting element 12W and the color layer 16FR disposed above the light-emitting element 12W. Sub-pixel 10G is composed of the light-emitting element 12W and the color layer 16FG disposed above the light-emitting element 12W. Sub-pixel 10B is composed of the light-emitting element 12W and the color layer 16FB disposed above the light-emitting element 12W.

[0158] Coloring layer 16FR is red. While allowing the red component of the white light emitted from the light-emitting element 12W to pass through, coloring layer 16FR absorbs visible light components other than red light. Coloring layer 16FG is green. While allowing the green component of the white light emitted from the light-emitting element 12W to pass through, coloring layer 16FG absorbs visible light components other than green light. Coloring layer 16FB is blue. While allowing the blue component of the white light emitted from the light-emitting element 12W to pass through, coloring layer 16FB absorbs visible light components other than blue light. The thickness of coloring layer 16FR can also be thinner than that of coloring layer 16FG. The thickness of coloring layer 16FB can also be thinner than that of coloring layer 16FR.

[0159] Color layer 16FR, for example, contains a red photoresist. Color layer 16FG, for example, contains a green photoresist. Color layer 16FB, for example, contains a blue photoresist.

[0160] (17FBK light-shielding layer)

[0161] Figure 3 This is a top view of the light-shielding layer and the surrounding layers. Figure 4 This is an enlarged cross-sectional view showing the peripheral end of the light-shielding layer 17FBK and its vicinity. The light-shielding layer 17FBK is disposed on the first surface of the planarization layer 15 in the peripheral region RE2. Preferably, the light-shielding layer 17FBK is located above and covers the contact electrode 124. The light-shielding layer 17FBK can absorb and block external light (visible light) incident on the peripheral region RE2. This suppresses the reflection of external light by the contact electrode 124, etc. In top view, the light-shielding layer 17FBK can have a closed ring shape surrounding the entire periphery of the display region RE1, or it can have a ring shape surrounding the periphery of the display region RE1 but divided at one or more locations. Figure 3 The image shows an example of the former's shape.

[0162] The light-shielding layer 17FBK includes a coloring layer 17FR and a coloring layer 17FB. Alternatively, the coloring layer 17FR may be disposed on the first surface of the planarization layer 15, and the coloring layer 17FB may be disposed on the first surface of the coloring layer 17FR. However, the stacking order of the coloring layers 17FB and 17FR is not particularly limited; it is also possible that the coloring layer 17FB is disposed on the first surface of the planarization layer 15, and the coloring layer 17FR is disposed on the first surface of the coloring layer 17FB. The peripheral end of the outer side of the coloring layer 17FB is recessed to a position further inward than the peripheral end of the outer side of the coloring layer 17FR. Thus, a height difference 17A3, equal to the thickness of the coloring layer 17FB, is formed between the first surfaces of the coloring layer 17FB and the coloring layer 17FR.

[0163] Preferably, coloring layers 17FR and 17FG have different colors. Coloring layer 17FR is preferably red. Coloring layer 17FR may also have the same transmittance and absorption properties as coloring layer 16FR. Preferably, coloring layer 17FB is blue. Coloring layer 17FB may also have the same transmittance and absorption properties as coloring layer 16FB. Preferably, coloring layer 17FR is made of the same material as coloring layer 16FR and has approximately the same thickness as coloring layer 16FR. Preferably, coloring layer 17FB is made of the same material as coloring layer 16FB and has approximately the same thickness as coloring layer 16FB. By having coloring layers 17FR and 17FB have the above-described structure and thickness, the color filter 16 and the light-shielding layer 17FBK can be formed in the same process. Alternatively, the thickness of coloring layer 16FB may be thinner than the thickness of coloring layer 16FR, and the thickness of coloring layer 17FB may be thinner than the thickness of coloring layer 17FR.

[0164] (Surrounding layer 18)

[0165] A peripheral layer 18 is disposed on the first surface of the planarization layer 15 in the peripheral region RE2. The peripheral layer 18 is located outside the peripheral end of the light-shielding layer 17FBK and surrounds the peripheral end of the light-shielding layer 17FBK. Alternatively, as shown... Figure 3 As shown, when viewed from above, the peripheral layer 18 has a closed loop that surrounds the light-shielding layer 17FBK.

[0166] The first surface of the peripheral layer can also be a flat surface. The height of the first surface of the peripheral layer 18 is lower than the height of the first surface of the coloring layer 17FR. Therefore, a height difference 17A2, smaller than the thickness of the coloring layer 17FR, is formed between the first surface of the peripheral layer 18 and the first surface of the coloring layer 17FR. Additionally, a height difference 17A1, smaller than the thickness of the coloring layer 17FR, is formed between the first surface of the peripheral layer 18 and the first surface of the planarization layer 15. Preferably, the width of the peripheral layer 18 is 1 μm or more. If the width of the peripheral layer 18 is 1 μm or more, peeling of the peripheral layer 18 during the manufacturing process of the display device 101 can be suppressed. Alternatively, the peripheral layer 18 may be separated from the peripheral end of the light-shielding layer 17FBK on its outer periphery, and a gap may be formed between the peripheral end of the inner periphery of the peripheral layer 18 and the peripheral end of the outer periphery of the light-shielding layer 17FBK. Preferably, the width of the gap formed between the peripheral layer 18 and the light-shielding layer 17FBK (coloring layer 17FR) is 0.2 μm or more. If the width of the gap is 0.2 μm or more, it is possible to suppress the overlap of the peripheral layer 18 and the light-shielding layer 17FBK during the manufacturing process of the display device 101.

[0167] Preferably, the peripheral layer 18 is made of the same material as the coloring layer 17FB, and more preferably, the peripheral layer 18 is made of the same material as the coloring layer 17FB and has approximately the same thickness as the coloring layer 17FB. By making the peripheral layer 18 of the same material as the coloring layer 17FB, the peripheral layer 18 can be formed by the same process as the coloring layer 17FB. However, the composition of the peripheral layer 18 is not limited to the above example; it may be made of a different material than the coloring layer 17FB, or it may have a different thickness than the coloring layer 17FB.

[0168] like Figure 4 As shown, the light-shielding layer 17FBK and the peripheral layer 18 form a stepped shape portion 17ST on the first surface of the planarization layer 15 in the peripheral region RE2. The stepped shape portion 17ST has, for example, three steps consisting of height differences 17A1, 17A2 and 17A3.

[0169] (Planarization layer 19)

[0170] A planarization layer 19 is disposed on and covers the first surface of the color filter 16. Preferably, the peripheral end of the planarization layer 19 is located outside the peripheral layer 18, and the planarization layer 19 also covers the stepped shape portion 17ST. Alternatively, the peripheral end of the planarization layer 19 may be located outside the peripheral end of the planarization layer 15, and the planarization layer 19 may also cover the peripheral end of the planarization layer 15.

[0171] The planarization layer 19 is transparent to light emitted from the color filter 16. Preferably, the planarization layer 19 is transparent to visible light. The planarization layer 19 can fill in the unevenness of the first surface of the color filter 16 and form a flat first surface above the color filter 16. Alternatively, the planarization layer 19 can prevent moisture from seeping into the multiple light-emitting elements 12W from the external environment. The thickness of the planarization layer 19 can also be thinner than the thickness of the color layer 17FB. The planarization layer 19 may contain, for example, inorganic or organic materials. As an inorganic material, the same material as the inorganic material of the protective layer 14 can be exemplified. As an organic material, the same material as the organic material of the protective layer 14 can be exemplified.

[0172] The organic material preferably contains a cured product of the photosensitive resin composition. The photosensitive resin composition may contain either a positive or negative photosensitive resin composition, but a positive photosensitive resin composition is preferred. Because a positive photosensitive resin composition is easier to form a positive taper than a negative photosensitive resin composition, it facilitates a smoother periphery of the planarization layer 19. Specific examples of the photosensitive resin composition include materials similar to the photosensitive resin composition of the planarization layer 15, but the study is not limited to these materials.

[0173] (Protective layer 20)

[0174] A protective layer 20 is disposed on the first surface of the planarization layer 19 and covers the first surface of the planarization layer 19 and the stepped shape portion 17ST. The protective layer 20 may also cover the entire first surface of the driving substrate 11. The protective layer 20 may also have a stepped shape mimicking the stepped shape portion 17ST. The protective layer 20 is transparent to light emitted from the color filter 16. Preferably, the protective layer 20 is transparent to visible light. The protective layer 20 can protect multiple light-emitting elements 12W, etc. For example, the protective layer 20 can prevent moisture from seeping into the multiple light-emitting elements 12W from the external environment. Alternatively, the protective layer 20 can improve the surface strength of the display surface.

[0175] The protective layer 20 can be an inorganic layer formed by vacuum film deposition technology such as CVD, or an organic layer (coating layer) formed by coating a resin composition. The protective layer 20 may contain at least one of inorganic and organic materials. Organic materials may include at least one curable resin such as a thermosetting resin and a UV-curable resin. Preferably, the protective layer 20 is composed of a hard coating layer. This improves the scratch resistance, weather resistance, and other properties of the display device 101.

[0176] The hard coating layer may, for example, comprise a UV-curable resin. The UV-curable resin may include at least one selected from the group consisting of free-radical polymeric UV-curable resins and cationic polymeric UV-curable resins. The UV-curable resin may also contain additives as needed. Additives may include at least one selected from the group consisting of sensitizers, fillers, stabilizers, leveling agents, UV absorbers, antistatic agents, defoamers, and viscosity modifiers. Specifically, for example, the UV-curable resin may also include an acrylic-based UV-curable resin.

[0177] [Manufacturing method of display device 101]

[0178] The following describes an example of a method for manufacturing the display device 101 according to the first embodiment.

[0179] (The process of forming the first electrode 121 and the contact electrode 124)

[0180] First, a metal layer and a metal oxide layer are sequentially formed on the first surface of the driving substrate 11, for example, by sputtering. Then, the metal layer and the metal oxide layer are patterned, for example, using photolithography. As a result, a plurality of first electrodes 121 and contact electrodes 124 are formed on the first surface of the driving substrate 11.

[0181] (The process of forming insulating layer 13)

[0182] Next, for example, an insulating layer 13 is formed on the first surface of the driving substrate 11 by means of CVD (Chemical Vapor Deposition) to cover a plurality of first electrodes 121 and contact electrodes 124. Next, for example, a plurality of first openings 131 and second openings 132 are formed on the insulating layer 13 by means of photolithography. The plurality of first openings 131 and second openings 132 are as described above.

[0183] (Forming process of OLED layer 122)

[0184] Next, for example, the hole transport layer, red light-emitting layer, light-emitting separation layer, blue light-emitting layer, green light-emitting layer, electron transport layer, and electron injection layer are stacked in this order on the first surface of the plurality of first electrodes 121 and the first surface of the driving substrate 11 by vapor deposition, thereby forming the OLED layer 122.

[0185] (Forming process of the second electrode 123)

[0186] Next, a second electrode 123 is formed on the first surface of the OLED layer 122 and the first surface of the contact electrode 124, for example, by vapor deposition or sputtering. As a result, a plurality of light-emitting elements 12W are formed on the first surface of the driving substrate 11, and the periphery of the second surface of the second electrode 123 is connected to the contact electrode 124.

[0187] (Forming process of protective layer 14)

[0188] Next, a protective layer 14 is formed on the first surface of the second electrode 123, for example by CVD or vapor deposition.

[0189] (Forming process of planarization layer 15)

[0190] Next, for example, a photosensitive resin composition is coated on the first surface of the protective layer 14, and then the photosensitive resin composition is exposed and developed, thereby forming a planarization layer 15 on the first surface of the protective layer 14.

[0191] (Forming process of color filter 16, light-shielding layer 17FBK and peripheral layer 18)

[0192] Next, a green photoresist is coated onto the first surface of the planarization layer 15, and a pattern is exposed to ultraviolet light through a photomask. Then, development is performed to form multiple color layers 16FG. Next, a red photoresist is coated onto the first surface of the planarization layer 15, covering multiple color layers 16FG. A pattern is exposed to ultraviolet light through a photomask. Then, development is performed to form multiple color layers 16FR and one color layer 17FR. Next, a blue photoresist is coated onto the first surface of the planarization layer 15, covering multiple color layers 16FG, multiple color layers 16FR, and one color layer 17FR. A pattern is exposed to ultraviolet light through a photomask. Then, development is performed to form multiple color layers 16FB, one color layer 17FB, and a peripheral layer 18. Thus, a color filter 16, a light-shielding layer 17FBK, and a peripheral layer 18 are formed on the first surface of the planarization layer 15.

[0193] (Forming process of planarization layer 19)

[0194] Next, for example, a photosensitive resin composition is coated on the first surface of the color filter 16, the light-shielding layer 17FBK and the peripheral layer 18, and then the photosensitive resin composition is exposed and developed, thereby forming a planarization layer 19 covering the color filter 16, the light-shielding layer 17FBK and the peripheral layer 18.

[0195] (The process of forming protective layer 20)

[0196] Next, a protective layer 20 is formed on the first surface of the planarization layer 19, for example, by a vacuum film-forming technique such as CVD. However, the method of forming the protective layer 20 is not limited to this example. For example, the protective layer 20 can also be formed by coating a curable resin on the first surface of the planarization layer 19 and curing it.

[0197] [Effects]

[0198] As described above, in the display device 101 according to the first embodiment, the peripheral layer 18 surrounds the peripheral end of the outer periphery of the light-shielding layer 17FBK, and the height of the first surface of the peripheral layer 18 is lower than the height of the first surface of the coloring layer 17FR. Therefore, a height difference 17A2, smaller than the thickness of the coloring layer 17FR, is formed between the first surface of the coloring layer 17FR and the first surface of the peripheral layer 18. Furthermore, a height difference 17A1, smaller than the thickness of the coloring layer 17FR, is formed between the first surface of the peripheral layer 18 and the first surface of the planarization layer 15.

[0199] The peripheral end of the outer side of the coloring layer 17FB is recessed to a position further inward than the peripheral end of the outer side of the coloring layer 17FR. As a result, a height difference 17A3 is formed between the first surface of the coloring layer 17FB and the first surface of the coloring layer 17FR.

[0200] Therefore, the three-tiered stepped shape portion 17ST, consisting of height differences 17A1, 17A2, and 17A3, is formed by the light-shielding layer 17FBK and the peripheral layer 18. This stepped shape portion 17ST gradually decreases in elevation as it moves away from the display area RE1. This suppresses the deterioration of the adhesion and coverage of the protective layer 20 at the peripheral end of the light-shielding layer 16FBK. For example, when the protective layer 20 is formed using vacuum film deposition techniques such as CVD, the deterioration of the adhesion and coverage of the protective layer 20 at the peripheral end of the light-shielding layer 16FBK can also be suppressed. Therefore, since the reduction in the function of the protective layer 20 can be suppressed, the decrease in the durability of the display device 101 can be suppressed.

[0201] <3 Second Implementation>

[0202] [Configuration of display device 102]

[0203] Figure 5 This is a cross-sectional view of the display device 102 according to the second embodiment. The display device 102 includes a plurality of peripheral layers 18. For example... Figure 6 As shown, a plurality of peripheral layers 18 are located outside the peripheral end of the light-shielding layer 17FBK and have a concentric shape surrounding the display area RE1. The spacing D between adjacent peripheral layers 18 widens with distance from the display area RE1. The plurality of peripheral layers 18 may also have approximately the same thickness regardless of the distance from the display area RE1. The width W of the plurality of peripheral layers 18 may also be the same regardless of the distance from the display area RE1. The spacing d between the peripheral layer 18 closest to the display area RE1 and the color layer 17FR may be either narrower than the spacing D between the peripheral layer 18 closest to the display area RE1 and the second closest peripheral layer 18 to the display area RE1, or approximately equal to that distance.

[0204] Preferably, the width W of the peripheral layer 18 is set to 1 μm or more. If the width W of the peripheral layer 18 is 1 μm or more, peeling of the peripheral layer 18 during the manufacturing process of the display device 102 can be suppressed. Preferably, the spacing D between adjacent peripheral layers 18 is set to 0.2 μm or more. If the spacing D between adjacent peripheral layers 18 is 0.2 μm or more, overlapping of adjacent peripheral layers 18 during the manufacturing process of the display device 102 can be suppressed. Preferably, the plurality of peripheral layers 18 are made of the same material as the coloring layer 17FR or coloring layer 17FB. Therefore, the coloring layer 17FR or coloring layer 17FB and the peripheral layers 18 can be formed in the same process.

[0205] The periphery of the planarization layer 19 can also be recessed to a location further inward than the periphery of the light-shielding layer 17FBK, specifically, it can be recessed to a location further inward than the periphery of the coloring layer 17FB. In this case, a height difference 17A4 is formed between the first surface of the planarization layer 19 and the first surface of the light-shielding layer 17FBK.

[0206] The protective layer 20 covers the planarization layer 19, the light-shielding layer 17FBK, and multiple peripheral layers 18. The first surface of the protective layer 20 gradually descends from the outer periphery of the light-shielding layer 17FBK. The descending first surface of the protective layer 20 can be an inclined surface, a stepped surface, or a combination of both.

[0207] [Manufacturing method of display device 102]

[0208] The following describes an example of the manufacturing method of the display device 102 according to the second embodiment. However, the process from forming the first electrode 121 and the contact electrode 124 to forming the planarization layer 15 is the same as the manufacturing method of the display device 101 in the first embodiment, so the description is omitted and the description will begin from the next process after the process of forming the planarization layer 15.

[0209] (Forming process of color filter 16, light-shielding layer 17FBK and peripheral layer 18)

[0210] After the planarization layer 15 is formed, a plurality of color layers 16FG are formed in the same manner as the formation process of color layer 16FG in the first embodiment. Next, a red color photoresist is coated on the first surface of the planarization layer 15 to cover the plurality of color layers 16FG, and ultraviolet light is irradiated through a photomask to expose the pattern, followed by development, thereby forming a plurality of color layers 16FR, a color layer 17FR, and a plurality of peripheral layers 18. Next, a blue color photoresist is coated on the first surface of the planarization layer 15 to cover the plurality of color layers 16FG, the plurality of color layers 16FR, the color layer 17FR, and the plurality of peripheral layers 18, and ultraviolet light is irradiated through a photomask to expose the pattern, followed by development, thereby forming a plurality of color layers 16FB and a color layer 17FB. Thus, a color filter 16, a light-shielding layer 17FBK, and a plurality of peripheral layers 18 are formed on the first surface of the planarization layer 15.

[0211] (Forming process of planarization layer 19)

[0212] Next, for example, a photosensitive resin composition is coated on the first surface of the color filter 16, and then the photosensitive resin composition is exposed and developed, thereby forming a planarization layer 19 on the first surface of the color filter 16 and the first surface of the light-shielding layer 17FBK.

[0213] (The process of forming protective layer 20)

[0214] Next, a protective layer 20 is formed on the first surface of the planarization layer 19, for example, using a vacuum film deposition technique such as CVD. At this time, the film-forming material of the protective layer 20 extends between adjacent peripheral layers 18. Since the spacing D between the multiple peripheral layers 18 widens with distance from the display region RE1, the amount of film-forming material extending between adjacent peripheral layers 18 increases with distance from the display region RE1. Therefore, the first surface of the protective layer 20 gradually descends with distance from the display region RE1.

[0215] However, the method of forming the protective layer 20 is not limited to this example. For example, the protective layer 20 can also be formed by coating a curable resin on the first surface of the planarization layer 19 and curing it. In this case, since the curable resin enters between the adjacent peripheral layers 18, the first surface of the protective layer 20 also gradually descends away from the display area RE1, similar to the case of vacuum film deposition techniques such as CVD.

[0216] [Effects]

[0217] As described above, in the display device 102 according to the second embodiment, the first surface of the protective layer 20 gradually decreases as it moves away from the display area RE1. Therefore, it is possible to suppress the deterioration of the adhesion and coverage of the protective layer 20 at the peripheral end of the light-shielding layer 17FBK. Therefore, since it is possible to suppress the reduction of the function of the protective layer 20, it is possible to suppress the reduction of the durability of the display device 102.

[0218] <4 Variations>

[0219] [Variation Example 1]

[0220] In the first embodiment, such as Figure 4 As shown, an example has been illustrated where the peripheral layer 18 and the outer peripheral side of the light-shielding layer 17FBK are separated. However, this disclosure is not limited to this example; for example, as... Figure 7 As shown, the peripheral layer 18 can also be connected to the peripheral end of the outer periphery of the light-shielding layer 17FBK.

[0221] Even in the display device 102 according to the second embodiment, similarly, the innermost peripheral layer 18 of the plurality of concentrically arranged peripheral layers 18 can be connected to the peripheral end of the outer peripheral side of the light-shielding layer 17FBK.

[0222] [Variation Example 2]

[0223] In the first embodiment, such as Figure 4As shown, an example where the first surface of the peripheral layer 18 is a flat surface has been illustrated. However, the shape of the first surface of the peripheral layer 18 is not limited to this; for example, as shown... Figure 8 As shown, the first surface of the peripheral layer 18 can also be stepped. This step shape can also have a height difference 17A5, decreasing as it moves away from the display area RE1. The height of the first surface of the peripheral layer 18 at its inner periphery can be approximately the same as or lower than the height of the first surface of the color layer 17FR. The peripheral layer 18 can be separated from or connected to the peripheral end of the outer periphery of the light-shielding layer 17FBK. Figure 8 An example of the latter is shown in the figure.

[0224] [Variation Example 3]

[0225] In the first embodiment, such as Figure 4 As shown, an example has been illustrated where the peripheral end of the planarization layer 19 is located further outward than the peripheral layer 18. However, this disclosure is not limited to this example; for example, as... Figure 9 As shown, the peripheral end of the planarization layer 19 can also be recessed to a location further inward than the peripheral end of the light-shielding layer 17FBK, specifically, further inward than the peripheral end of the coloring layer 17FB. Thus, a height difference 17A4 is formed between the first surface of the planarization layer 19 and the first surface of the light-shielding layer 17FBK.

[0226] Preferably, the peripheral layer 18 is made of the same material as the coloring layer 17FB, and more preferably, the peripheral layer 18 is made of the same material as the coloring layer 17FB and has approximately the same thickness as the coloring layer 17FB. By making the peripheral layer 18 the same material as the coloring layer 17FB, the coloring layer 17FB and the peripheral layer 18 can be formed in the same process.

[0227] In Modification 3, the four-level stepped shape portion 17ST, consisting of height differences 17A1, 17A2, 17A3, and 17A4, is formed by a planarization layer 19, a light-shielding layer 17FBK, and a peripheral layer 18. Therefore, since the steps of the stepped shape portion 17ST can be further reduced, the degradation of the adhesion and coverage of the protective layer 20 at the peripheral end of the light-shielding layer 17FBK can be further suppressed.

[0228] [Variation Example 4]

[0229] In Modification Example 3, an example was described where the peripheral layer 18 was made of the same material as the coloring layer 17FB. However, this disclosure is not limited to this example; for example, the peripheral layer 18 could also be made of the same material as the planarization layer 19. In this case, the planarization layer 19 and the peripheral layer 18 can be formed in the same process. Figure 10 As shown, the peripheral layer 18 may also be made of the same material as the planarization layer 19 and have approximately the same thickness as the planarization layer 19.

[0230] [Variation Example 5]

[0231] In the first embodiment, such as Figure 4 As shown, an example has been described in which the peripheral end of the outer periphery of the coloring layer 17FB is recessed to a position further inward than the peripheral end of the outer periphery of the coloring layer 17FR. However, this disclosure is not limited to this example; for example, other examples may be described as follows: Figure 11 As shown, the peripheral end of the outer periphery of the coloring layer 17FB is located further outward than the peripheral end of the outer periphery of the coloring layer 17FR, and the coloring layer 17FB covers the peripheral end of the outer periphery of the coloring layer 17FR. Alternatively, the peripheral layer 18 may be separate from the peripheral end of the outer periphery of the coloring layer 17FB, and a gap may be formed between the peripheral end of the inner periphery of the peripheral layer 18 and the peripheral end of the outer periphery of the coloring layer 17FB; or the peripheral layer 18 may be connected to the peripheral end of the outer periphery of the coloring layer 17FB.

[0232] The height of the first surface of the peripheral layer 18 is lower than the height of the first surface of the light-shielding layer 17FBK, i.e., the first surface of the coloring layer 17FB. Thus, a height difference 17A6 is formed between the first surface of the light-shielding layer 17FBK and the first surface of the peripheral layer 18. However, the height of the first surface of the peripheral layer 18 may also be lower than the height of the first surface of the coloring layer 17FR.

[0233] Preferably, the peripheral layer 18 is made of the same material as the planarization layer 19, and more preferably, the peripheral layer 18 is made of the same material as the planarization layer 19 and has approximately the same thickness as the planarization layer 19. By making the peripheral layer 18 the same material as the planarization layer 19, the planarization layer 19 and the peripheral layer 18 can be formed in the same process.

[0234] Preferably, the peripheral layer 18 is made of the same material as the coloring layer 17FB, and more preferably, the peripheral layer 18 is made of the same material as the coloring layer 17FB and has approximately the same thickness as the coloring layer 17FB. By making the peripheral layer 18 the same material as the coloring layer 17FB, the coloring layer 17FB and the peripheral layer 18 can be formed in the same process.

[0235] Similar to Modified Example 3, the peripheral end of the planarization layer 19 can also be recessed to a location further inward than the peripheral end of the light-shielding layer 17FBK, specifically further inward than the peripheral end of the coloring layer 17FB. In this case, a height difference 17A4 is formed between the first surface of the planarization layer 19 and the first surface of the light-shielding layer 17FBK.

[0236] In Modification 5, the three-tiered stepped shape 17ST, consisting of height differences 17A1, 17A4, and 17A6, is formed by a planarization layer 19, a light-shielding layer 17FBK, and a peripheral layer 18. The height difference 17A gradually decreases with distance from the display area RE1. Therefore, it is possible to suppress the deterioration of the adhesion and coverage of the protective layer 20 at the peripheral end of the light-shielding layer 17FBK. That is, since the functional degradation of the protective layer 20 can be suppressed, the durability reduction of the display device 101 can be suppressed.

[0237] [Variation Example 6]

[0238] In the first embodiment, such as Figure 4 As shown, an example of a display device 101 having a peripheral layer 18 has been described. However, this disclosure is not limited to this example; for example, as... Figure 12 As shown, the display device 101 may also have two peripheral layers 181 and 182.

[0239] The peripheral layers 181 and 182 are located outside the peripheral end of the light-shielding layer 17FBK and have a concentric shape surrounding the display area RE1. Alternatively, as shown... Figure 13 As shown, in a top view, peripheral layers 181 and 182 have a closed ring shape surrounding the light-shielding layer 17FBK. Viewed from the display area RE1, peripheral layer 181 is located near the front side of peripheral layer 182.

[0240] The height of the first surface of the peripheral layer 181 is lower than the height of the first surface of the coloring layer 17FR. As a result, a height difference 17A9, which is less than the thickness of the coloring layer 17FR, is formed between the first surface of the peripheral layer 181 and the first surface of the coloring layer 17FR.

[0241] The height of the first surface of the peripheral layer 182 is lower than the height of the first surface of the peripheral layer 181. Therefore, a height difference 17A8, smaller than the thickness of the peripheral layer 181, is formed between the first surfaces of the peripheral layer 181 and the peripheral layer 182. Additionally, a height difference 17A7, smaller than the thickness of the peripheral layer 181, is formed between the first surface of the peripheral layer 182 and the first surface of the planarization layer 15.

[0242] Alternatively, the peripheral layer 181 may be separated from the outer peripheral end of the light-shielding layer 17FBK, and a gap may be formed between the inner peripheral end of the peripheral layer 181 and the outer peripheral end of the light-shielding layer 17FBK; or the peripheral layer 181 may be connected to the outer peripheral end of the light-shielding layer 17FBK. Alternatively, the peripheral layer 182 may be separated from the outer peripheral end of the peripheral layer 181, and a gap may be formed between the inner peripheral end of the peripheral layer 182 and the outer peripheral end of the peripheral layer 181; or the peripheral layer 182 may be connected to the outer peripheral end of the peripheral layer 181. The width d of the gap formed between the peripheral layer 182 and the light-shielding layer 17FBK (coloring layer 17FR) is preferably 0.2 μm or more. When the gap width d is 0.2 μm or more, overlapping of the peripheral layer 182 and the light-shielding layer 17FBK during the manufacturing process of the display device 101 can be suppressed. The width D of the gap formed between peripheral layer 181 and peripheral layer 182 is preferably 0.2 μm or more. When the width D of the gap is 0.2 μm or more, it is possible to suppress the overlap of peripheral layer 181 and peripheral layer 182 in the manufacturing process of display device 101.

[0243] Preferably, the peripheral layer 181 is made of the same material as the coloring layer 17FB; more preferably, the peripheral layer 181 is made of the same material as the coloring layer 17FB and has approximately the same thickness as the coloring layer 17FB. Because the peripheral layer 181 is made of the same material as the coloring layer 17FB, the coloring layer 17FB and the peripheral layer 181 can be formed in the same process. Preferably, the peripheral layer 182 is made of the same material as the planarization layer 19; more preferably, the peripheral layer 182 is made of the same material as the planarization layer 19 and has approximately the same thickness as the planarization layer 19. Because the peripheral layer 182 is made of the same material as the planarization layer 19, the planarization layer 19 and the peripheral layer 182 can be formed in the same process.

[0244] It could also be, such as Figure 12 As shown, the display device 101 further includes a peripheral layer 21. The peripheral layer 21 is disposed on the platform portion 17TR ​​of the light-shielding layer 17FBK and surrounds the peripheral end portion of the outer peripheral side of the color layer 17FB. The platform portion 17TR ​​is formed by retracting from the peripheral end portion of the outer peripheral side of the color layer 17FB to a position further inward than the peripheral end portion of the outer peripheral side of the color layer 17FR. The peripheral layer 21 retracts from the peripheral end portion of the outer peripheral side of the color layer 17FR. Alternatively, the peripheral layer 21 may be separated from the peripheral end portion of the outer peripheral side of the color layer 17FB, and a gap may be formed between the peripheral end portion of the inner peripheral side of the peripheral layer 21 and the peripheral end portion of the outer peripheral side of the color layer 17FB; or the peripheral layer 21 may be in contact with the peripheral end portion of the outer peripheral side of the color layer 17FB.

[0245] The height of the first surface of the peripheral layer 21 is lower than the height of the first surface of the color layer 17FB. Therefore, the height difference 17A is less than the thickness of the color layer 17FB. 11 It is formed between the first surface of the coloring layer 17FB and the first surface of the peripheral layer 21. Additionally, there is a height difference 17A smaller than the thickness of the coloring layer 17FB. 10 It is formed between the first surface of the coloring layer 17FR and the first surface of the peripheral layer 21. Preferably, the peripheral layer 21 is made of the same material as the planarization layer 19; more preferably, the peripheral layer 21 is made of the same material as the planarization layer 19 and has approximately the same thickness as the planarization layer 19. By making the peripheral layer 21 the same material as the planarization layer 19, the planarization layer 19 and the peripheral layer 21 can be formed in the same process.

[0246] In variation example 6, the height difference 17A7, height difference 17A8, height difference 17A9, and height difference 17A... 10 Elevation difference 17A 11 The six-step stepped shape portion 17ST, which is formed by the height difference 17A4, is formed by a planarization layer 19, a light-shielding layer 17FBK, a peripheral layer 182, and a peripheral layer 181. Therefore, since each step of the stepped shape portion 17ST can be further reduced, the deterioration of the adhesion and coverage of the protective layer 20 at the peripheral end of the light-shielding layer 17FBK can be further suppressed.

[0247] In Modification 6, an example was described where the display device 101 has two peripheral layers 181 and 182. However, the number of peripheral layers is not limited to this example, and the display device 101 may also have three or more peripheral layers. In this case, the height of the three or more peripheral layers may decrease as they move away from the display area RE1.

[0248] [Variation Example 7]

[0249] In the first embodiment, such as Figure 4 As shown, an example of a light-shielding layer 17FBK including a coloring layer 17FR and a coloring layer 17FB has been illustrated. However, the configuration of the light-shielding layer 17FBK is not limited to this example; for example, it could also be, as shown... Figure 14 As shown, the light-shielding layer 17FBK includes a color layer 17FR, a color layer 17FB, and multiple color layers 17FG. Similar to Modification 6, the display device 101 may also have two peripheral layers 181 and 182.

[0250] Multiple shaded layers 17FG can also be arranged two-dimensionally in a prescribed configuration pattern. The prescribed configuration pattern can also be the same as that of the multiple shaded layers 16FG. Shaded layer 17FR is configured to cover the multiple shaded layers 17FG. The height of the first surface of the peripheral layer 181 is lower than the height of the first surface of the outermost shaded layer 17FG among the multiple shaded layers 17FG. Therefore, the height difference 17A is less than the thickness of the shaded layers 17FG. 12 It is formed between the first surface of the peripheral layer 181 and the first surface of the coloring layer 17FG.

[0251] The peripheral end of the outer side of the coloring layer 17FR is recessed to a position further inward than the outermost end of the outermost coloring layer 17FG among the plurality of coloring layers 17FG. Consequently, the height difference 17A is lower than the thickness of the outermost coloring layer 17FB. 13 It is formed between the first surface of the color layer 17FR and the first surface of the color layer 17FG. Here, the outer end of the color layer 17FG is indicated as the end on the side opposite to the display area RE1 side.

[0252] Preferably, coloring layer 17FG is made of the same material as coloring layer 16FG and has approximately the same thickness. Therefore, coloring layers 16FG and 17FG can be formed in the same process. Preferably, peripheral layer 181 is made of the same material as coloring layer 16FR. Therefore, coloring layer 16FR and peripheral layer 181 can be formed in the same process. Preferably, peripheral layer 182 is made of the same material as coloring layer 16FB and has approximately the same thickness. Therefore, coloring layer 16FB and peripheral layer 182 can be formed in the same process. Alternatively, the thickness of coloring layer 16FR may be thinner than the thickness of coloring layer 16FG, and the thickness of coloring layer 17FR may be thinner than the thickness of coloring layer 17FG. Alternatively, the thickness of coloring layer 16FB may be thinner than the thickness of coloring layer 16FR, and the thickness of coloring layer 17FB may be thinner than the thickness of coloring layer 17FR.

[0253] In variation 7, the elevation difference 17A7, elevation difference 17A8, and elevation difference 17A are used. 12 Elevation difference 17A 13 The five-level stepped shape portion 17ST, which is formed by the height difference 17A3, is formed by a planarization layer 19, a light-shielding layer 17FBK, a peripheral layer 181, and a peripheral layer 182. Therefore, since each step of the stepped shape portion 17ST can be further reduced, the degradation of the adhesion and coverage of the protective layer 20 at the peripheral end of the light-shielding layer 17FBK can be further suppressed.

[0254] Similarly, in the display device 102 of the second embodiment, the light-shielding layer 17FBK may also include a color layer 17FR, a color layer 17FB, and a plurality of color layers 17FG.

[0255] [Variation Example 8]

[0256] In Variation 7, an example was described where the light-shielding layer 17 includes multiple coloring layers 17FG. However, the configuration of the light-shielding layer 17FBK is not limited to this example; for example, it could also be, as... Figure 15 As shown, the light-shielding layer 17 includes a coloring layer 17FG.

[0257] Alternatively, the display device 101 may also include a peripheral layer 22. The peripheral layer 22 is disposed on the platform portion 17TG of the light-shielding layer 17FBK and surrounds the peripheral end portion of the outer periphery of the coloring layer 17FR. The platform portion 17TG is formed by receding from the peripheral end portion of the outer periphery of the coloring layer 17FR to a position further inward than the peripheral end portion of the outer periphery of the coloring layer 17FG. The peripheral layer 22 recedes from the peripheral end portion of the outer periphery of the coloring layer 17FG. Alternatively, the peripheral layer 22 may be separate from the peripheral end portion of the outer periphery of the coloring layer 17FR, and a gap may be formed between the peripheral end portion of the inner periphery of the peripheral layer 22 and the peripheral end portion of the outer periphery of the coloring layer 17FR; alternatively, the peripheral layer 22 may be in contact with the peripheral end portion of the outer periphery of the coloring layer 17FR. Preferably, the peripheral layer 22 is made of the same material as the planarization layer 19; more preferably, the peripheral layer 22 is made of the same material as the planarization layer 19 and has approximately the same thickness as the planarization layer 19. Since the peripheral layer 22 is made of the same material as the planarization layer 19, the planarization layer 19 and the peripheral layer 22 can be formed in the same process.

[0258] The height of the first surface of the peripheral layer 22 is lower than the height of the first surface of the coloring layer 17FR. Therefore, the height difference 17A is less than the thickness of the coloring layer 17FR. 15 It is formed between the first surface of the peripheral layer 22 and the first surface of the coloring layer 17FR. Additionally, there is a height difference 17A smaller than the thickness of the coloring layer 17FR. 14 It is formed between the first surface of the coloring layer 17FG and the first surface of the peripheral layer 22.

[0259] In variation example 8, the height difference 17A7, height difference 17A8, and height difference 17A are used. 12 Elevation difference 17A 14 Elevation difference 17A 15The six-step stepped shape portion 17ST, which is formed by the height difference 17A3, is formed by a planarization layer 19, a light-shielding layer 17FBK, a peripheral layer 22, a peripheral layer 181, and a peripheral layer 182. Therefore, since each step of the stepped shape portion 17ST can be further reduced, the deterioration of the adhesion and coverage of the protective layer 20 at the peripheral end of the light-shielding layer 17FBK can be further suppressed.

[0260] Similarly, in the display device 102 according to the second embodiment, the light-shielding layer 17FBK may also include a coloring layer 17FG. In addition, the display device 102 may also have a peripheral layer 22.

[0261] [Variation Example 9]

[0262] In the first embodiment, such as Figure 4 As shown, an example of a light-shielding layer 17FBK comprising a red coloring layer 17FR and a blue coloring layer 17FB has been illustrated. However, the composition of the light-shielding layer 17FBK is not limited to this example; for example, the light-shielding layer 17FBK may also include a black coloring layer. The black coloring layer may, for example, contain a black color photoresist.

[0263] Similarly, in the display device 102 of the second embodiment, the light-shielding layer 17FBK may also include a black coloring layer.

[0264] [Variation Example 10]

[0265] In the first embodiment, such as Figure 4 As shown, an example has been illustrated where the height of the first surface of the peripheral layer 18 is lower than the height of the first surface of the color layer 17FR. However, this disclosure is not limited to this example, as... Figure 16 As shown, the height of the first surface of the peripheral layer 18 can also be approximately the same as the height of the first surface of the coloring layer 17FR. It should be noted that "approximately the same" includes cases where they are identical. In Modification 10, it is preferable that the peripheral layer 18 is made of the same material as the coloring layer 17FR; more preferably, the peripheral layer 18 is made of the same material as the coloring layer 17FR and has approximately the same thickness as the coloring layer 17FR. By making the peripheral layer 18 of the same material as the coloring layer 17FR, the coloring layer 16FR and the peripheral layer 18 can be formed in the same process. The peripheral layer 18 is separated from the peripheral end of the outer periphery of the coloring layer 17FR, and a gap is formed between the peripheral end of the outer periphery of the coloring layer 17FR and the peripheral end of the inner periphery of the peripheral layer 18.

[0266] In the above-described modified example 10, during the manufacturing process of the display device 101, since the film-forming material used to form the protective layer 20 enters the gap between the coloring layer 17FR and the peripheral layer 18, the first surface of the protective layer 20 can be lowered near the peripheral end of the outer periphery of the peripheral layer 18. A step can be formed on the first surface of the protective layer through this lowering.

[0267] [Variation Example 11]

[0268] In the second embodiment, such as Figure 5 , Figure 6 The example shown illustrates how the spacing D between adjacent peripheral layers 18 widens as the distance from the display area RE1 increases. However, this disclosure is not limited to this example; for instance, it can also be configured as follows: Figure 17 , Figure 18 As shown, the width W of the peripheral layer 18 narrows as it moves away from the display area RE1. Alternatively, the spacing D between adjacent peripheral layers 18 may be constant, independent of the distance from the display area RE1. Alternatively, the height of the multiple peripheral layers 18 may be constant, independent of the distance from the display area RE1.

[0269] In Modification 11, during the manufacturing process of the display device 101, the amount of film-forming material of the protective layer 20 placed on the first surface of the peripheral layer 18 decreases as it moves away from the display area RE1. Therefore, the first surface of the protective layer 20 gradually descends as it moves away from the display area RE1.

[0270] like Figure 19 As shown, the width W of the plurality of peripheral layers 18 can also be configured to narrow as the distance from the display area RE1 increases, and the thickness of the plurality of peripheral layers 18 can also decrease as the distance from the display area RE1 increases. In this case, the spacing D between adjacent peripheral layers 18 can be constant regardless of the distance from the display area RE1, or the spacing D between adjacent peripheral layers 18 can be widened as the distance from the display area RE1 increases. The width W of the peripheral layer 18 is preferably set to 1 μm or more. If the width W of the peripheral layer 18 is 1 μm or more, peeling of the peripheral layer 18 during the manufacturing process of the display device 101 can be suppressed. The spacing D between adjacent peripheral layers 18 is preferably 0.2 μm or more. If the spacing D between adjacent peripheral layers 18 is 0.2 μm or more, overlapping of adjacent peripheral layers 18 during the manufacturing process of the display device 101 can be suppressed.

[0271] [Variation Example 12]

[0272] In the first embodiment, such as Figure 3As shown, an example of a peripheral layer 18 having a closed loop surrounding the light-shielding layer 17FBK when viewed from above has been illustrated. However, the configuration of the peripheral layer 18 is not limited to this example; for example, it could also be, as shown in the example below. Figure 20 As shown, in a top view, the peripheral layer 18 has a ring shape that is divided at multiple locations.

[0273] [Variation Example 13]

[0274] In variation example 6, such as Figure 13 As shown, an example in which the peripheral layers 181 and 182 have a closed ring shape surrounding the light-shielding layer 17FBK when viewed from above has been described. However, the configuration of the peripheral layers 181 and 182 is not limited to this example.

[0275] For example, it could also be, such as Figure 21 As shown, in top view, peripheral layer 181 has a closed loop shape, and in top view, peripheral layer 182 has a loop shape that is divided at multiple locations.

[0276] For example, it could also be, such as Figure 22 As shown, in top view, peripheral layers 181 and 182 have rings that are divided at multiple locations. In this case, the number of divided locations in peripheral layer 182 can also be greater than the number of divided locations in peripheral layer 181.

[0277] In the second embodiment, a portion of the peripheral layers 18 or all of the peripheral layers 18 may have a ring shape divided at multiple locations. In this case, the number of divided locations of the peripheral layer 18 may also increase as it moves away from the display area RE1.

[0278] Specifically, for example, in a top view, the innermost peripheral layer 18 of the plurality of peripheral layers 18 may have a closed loop shape, and in a top view, the peripheral layers 18 other than the innermost peripheral layer may have a ring shape that is divided at multiple locations.

[0279] [Variation Example 14]

[0280] It could also be, such as Figure 23 As shown, the display device 101 according to the first embodiment also includes an adhesive layer 23 and an optical element 24.

[0281] An adhesive layer 23 is disposed between the protective layer 20 and the optical element 24, and adheres the protective layer 20 and the optical element 24 together. The adhesive layer 23 is transparent to light of all colors emitted from the color filter 16. Preferably, the adhesive layer 23 is transparent to visible light. The adhesive layer 23 is, for example, an adhesive layer such as OCA (Optical Clear Adhesive).

[0282] Optical element 24 is attached to the first surface of protective layer 20 via bonding layer 23. Optical element 24 is, for example, a polarizing element. By providing a polarizing element on the display surface, reflections on the display surface can be suppressed.

[0283] [Variation Example 15]

[0284] Alternatively, the display device 101 may also include a lens array. The lens array may be disposed, for example, between the planarization layer 19 and the protective layer 20, or on the first surface of the protective layer 20. The lens array can focus the light incident from the light-emitting element 12W via the color filter 16 onto the front direction.

[0285] The lens array comprises multiple lenses. These lenses are so-called on-chip microlenses (OCLs) and are arranged two-dimensionally on the first surface of the planarization layer 19 or the first surface of the protective layer 20 in a prescribed configuration pattern. Either one lens may be positioned above a light-emitting element 12W, or two or more lenses may be positioned above a light-emitting element 12W. The lenses may have curved surfaces on the exit surface side from which light incident from the light-emitting element 12W exits. Preferably, this curved surface is a convex curved surface protruding away from the light-emitting element 12W, but it is not limited to a convex curved surface. Examples of curved surfaces include, for example, a generally parabolic shape, a generally hemispherical shape, and a generally semi-elliptical shape, but these shapes are not limited to.

[0286] [Variation Example 16]

[0287] In the first and second embodiments, from the viewpoint of improving light extraction efficiency and / or improving color purity, the light-emitting element 12W may also have a resonator structure. In this specification, "and / or" means at least one; for example, in the case of "X and / or Y," it means only X, only Y, or X and Y.

[0288] When the first electrode 121 is a reflective electrode that functions as a reflective layer, the first electrode 121 and the second electrode 123 can also form a resonator structure. In this case, the optical distance between the first electrode 121 and the second electrode 123 can be set according to the thickness of the OLED layer 122, according to the material of the first electrode 121, or according to a combination thereof.

[0289] When the first electrode 121 is a transparent electrode, a reflective layer may be provided below the transparent electrode, and the reflective layer and the second electrode 123 may form a resonator structure. In this case, the optical distance between the reflective layer and the second electrode 123 may be set according to the thickness of the OLED layer 122, according to the material of the reflective layer, according to the thickness of the insulating layer disposed between the first electrode 121 (transparent electrode) and the reflective layer, or according to a combination of two or more of these.

[0290] [Variation Example 17]

[0291] In the first and second embodiments, an example was described where the display device 101 includes a plurality of light-emitting elements 12W capable of emitting white light and a color filter 16, and is capable of displaying a color image through their combination. However, the colorization method of the display device 101 is not limited to this. For example, the display device 101 may also include a plurality of light-emitting elements capable of emitting red light, a plurality of light-emitting elements capable of emitting green light, and a plurality of light-emitting elements capable of emitting blue light instead of the plurality of light-emitting elements 12W. In this case, a color filter may or may not be included.

[0292] The light-emitting element may also be: a first light-emitting element, including a light-emitting layer capable of emitting light of a predetermined color (red light, green light, or blue light); or a second light-emitting element, including a light-emitting layer capable of emitting white light, and capable of resonating and enhancing light of a predetermined wavelength (red light, green light, or blue light) included in the white light emitted by the light-emitting layer through a resonator structure; or a third light-emitting element, including a light-emitting layer capable of emitting light of a predetermined color (red light, green light, or blue light), and capable of resonating and enhancing light of a predetermined wavelength included in the predetermined color light emitted by the light-emitting layer through a resonator structure.

[0293] [Variation Example 18]

[0294] In the first and second embodiments, an example with a color filter 16 was described, but a quantum dot layer may be provided instead of the color filter 16, or a quantum dot layer may be provided simultaneously with the color filter 16. The quantum dot layer includes quantum dots (semiconductor particles) and is capable of changing the color of light emitted from multiple light-emitting elements. Alternatively, multiple light-emitting elements capable of emitting blue light may be provided instead of multiple light-emitting elements 12W.

[0295] [Variation Example 19]

[0296] In the first and second embodiments, an example in which the first electrode 121 is the anode and the second electrode 123 is the cathode was described. However, it is also possible that the first electrode 121 is the cathode and the second electrode 123 is the anode.

[0297] [Variation Example 20]

[0298] In the first and second embodiments, examples of the first electrode 121 being a separate electrode and the second electrode 123 being a common electrode were described, but it is also possible that the first electrode 121 is a common electrode and the second electrode 123 is a separate electrode.

[0299] [Variation Example 21]

[0300] In the first and second embodiments, an example of an OLED element being used as the light-emitting element 12W was described. However, the light-emitting element is not limited to this example. For example, it may also be a self-emissive light-emitting element such as an LED (Light Emitting Diode), an inorganic electroluminescence (IEL) element, or a semiconductor laser element. It is also possible to have two or more light-emitting elements in the display device.

[0301] [Other variations]

[0302] The first embodiment, the second embodiment and their variations (hereinafter referred to as "the first embodiment, etc.") of this disclosure have been described in detail above, but this disclosure is not limited to the first embodiment, etc., and various variations can be made based on the technical concept of this disclosure.

[0303] For example, the configurations, methods, processes, shapes, materials, and values ​​listed in the first embodiment are merely examples, and different configurations, methods, processes, shapes, materials, and values ​​may be used as needed.

[0304] As long as they do not depart from the spirit of this disclosure, the structure, method, process, shape, material and values ​​of the first embodiment, etc., can be combined with each other.

[0305] Unless otherwise specified, the materials exemplified in the first embodiment, etc., can be used alone or in combination of two or more.

[0306] Alternatively, this disclosure can also be configured as follows. (1)

[0308] A display device comprising:

[0309] A light-shielding layer surrounds the display area;

[0310] A first peripheral layer surrounds the light-shielding layer; and

[0311] A protective layer covering the light-shielding layer and the first peripheral layer.

[0312] The light-shielding layer includes a first coloring layer and a second coloring layer, wherein the second coloring layer is disposed on the first coloring layer.

[0313] The height of the upper surface of the first peripheral layer is lower than the height of the upper surface of the first coloring layer. (2)

[0315] According to the display device described in (1), wherein,

[0316] The first peripheral layer is made of the same material as the second coloring layer. (3)

[0318] According to the display device described in (1) or (2), wherein,

[0319] The outer end of the second coloring layer is recessed to a more inward position than the outer end of the first coloring layer. (4)

[0321] According to the display device described in (3), wherein,

[0322] The light-shielding layer includes a third coloring layer, and the second coloring layer is disposed on the second coloring layer.

[0323] The outer end of the third coloring layer is recessed to a position further inward than the outer end of the second coloring layer. (5)

[0325] According to the display device described in (4), wherein,

[0326] The display device further includes a second peripheral layer that surrounds the first peripheral layer.

[0327] The first peripheral layer is made of the same material as the second coloring layer.

[0328] The second peripheral layer is made of the same material as the third coloring layer. (6)

[0330] The display device according to any one of (1) to (5), wherein,

[0331] The display device further includes a second peripheral layer that surrounds the first peripheral layer.

[0332] The height of the upper surface of the second peripheral layer is lower than the height of the upper surface of the first peripheral layer. (7)

[0334] The display device according to any one of (1) to (5), wherein,

[0335] The display device further includes a second peripheral layer that surrounds the first peripheral layer.

[0336] The second peripheral layer is divided in the circumferential direction of the display area. (8)

[0338] The display device according to any one of (1) to (5), wherein,

[0339] The display device further includes a second peripheral layer that surrounds the first peripheral layer.

[0340] The first peripheral layer and the second peripheral layer are divided in the circumferential direction of the display area.

[0341] The number of segmented parts in the second peripheral layer is greater than the number of segmented parts in the first peripheral layer. (9)

[0343] The display device according to any one of (1) to (8), wherein,

[0344] The display device also has a third peripheral layer.

[0345] The third peripheral layer is disposed on the platform portion, which is formed by retracting the outer end of the second coloring layer to a position further inward than the outer end of the first coloring layer.

[0346] The third peripheral layer is recessed to a position further inward than the outer end of the first coloring layer, and the height of the upper surface of the third peripheral layer is lower than the height of the upper surface of the second coloring layer. (10)

[0348] According to the display device described in (9), wherein,

[0349] The display device further includes a planarization layer disposed between the light-shielding layer and the protective layer.

[0350] The third peripheral layer is made of the same material as the planarization layer. (11)

[0352] The display device according to any one of (1) to (4), wherein,

[0353] The display device further includes a planarization layer disposed between the light-shielding layer and the protective layer.

[0354] The end of the planarization layer is recessed to a position further inward than the outer end of the second coloring layer. (12)

[0356] According to the display device described in (11), wherein,

[0357] The first peripheral layer is made of the same material as the planarization layer. (13)

[0359] According to the display device described in (11), wherein,

[0360] The display device further includes a second peripheral layer that surrounds the first peripheral layer.

[0361] The first peripheral layer is made of the same material as the second coloring layer.

[0362] The second peripheral layer is made of the same material as the planarization layer. (14)

[0364] The display device according to any one of (1) to (9), wherein,

[0365] The display device further includes a planarization layer disposed between the light-shielding layer and the protective layer.

[0366] The planarization layer covers the outer end of the light-shielding layer and the first peripheral layer.

[0367] The planarization layer comprises a positive photosensitive resin composition. (15)

[0369] The display device according to any one of (1) to (14), wherein,

[0370] The first peripheral layer and the light-shielding layer form a stepped shape that descends three or more levels as it moves away from the display area. (16)

[0372] A display device comprising:

[0373] A light-shielding layer surrounds the display area;

[0374] Multiple peripheral layers, having a concentric shape surrounding the light-shielding layer; and

[0375] A protective layer covering the light-shielding layer and the plurality of first peripheral layers.

[0376] The spacing between the plurality of peripheral layers widens as they move away from the display area, or the width of the plurality of peripheral layers narrows as they move away from the display area. (17)

[0378] According to the display device described in (16), wherein,

[0379] The light-shielding layer includes a first coloring layer and a second coloring layer, wherein the second coloring layer is disposed on the first coloring layer.

[0380] The plurality of peripheral layers are made of the same material as the first coloring layer. (18)

[0382] According to the display device described in (16) or (17), wherein,

[0383] The height of the plurality of peripheral layers decreases as they move away from the display area. (19)

[0385] A display device comprising:

[0386] A light-shielding layer surrounds the display area;

[0387] Multiple peripheral layers, having a concentric shape surrounding the light-shielding layer; and

[0388] A protective layer covering the light-shielding layer and the plurality of first peripheral layers.

[0389] The plurality of peripheral layers include a plurality of segmented peripheral layers that are divided in the circumferential direction of the display area.

[0390] Regarding the number of segmented portions of the plurality of segmented peripheral layers, the farther away from the display area, the more segmented peripheral layers there are. (20)

[0392] An electronic device comprising any one of (1) to (19) a display device.

[0393] <5. The relationship between the normals passing through the centers of the light-emitting part, the lens component, and the wavelength selection part>

[0394] The relationship between the normal LN passing through the center of the light-emitting part, the normal LN' passing through the center of the lens component, and the normal LN' passing through the center of the wavelength selection part will be explained below. Here, the light-emitting part is, for example, the light-emitting element 12W. The lens component is, for example, the lens in Modified Example 15. The wavelength selection part is, for example, the color filter 16.

[0395] It should be noted that the size of the wavelength selection section can be appropriately adjusted according to the light emitted from the light-emitting section; alternatively, if a light-absorbing section (e.g., a black matrix section) is provided between the wavelength selection sections of adjacent light-emitting sections, the size of the light-absorbing section can be appropriately adjusted according to the light emitted from the light-emitting section. Furthermore, the size of the wavelength selection section can be appropriately adjusted based on the distance (offset) d0 between the normal passing through the center of the light-emitting section and the normal passing through the center of the wavelength selection section. The planar shape of the wavelength selection section can be the same as, similar to, or different from the planar shape of the lens component.

[0396] The following is for reference Figure 24 A, Figure 24 B Figure 24 C, Figure 25 The relationship between the normals passing through the center of each part when the light-emitting part 51, the wavelength selection part 52, and the lens component 53 are arranged in this order will be explained.

[0397] like Figure 24 As shown in Figure A, the normal LN passing through the center of the light-emitting part 51, the normal LN” passing through the center of the wavelength selection part 52, and the normal LN' passing through the center of the lens member 53 can be the same. That is, D0 = 0, d0 = 0. Here, D0 represents the distance (offset) between the normal LN passing through the center of the light-emitting part 51 and the normal LN' passing through the center of the lens member 53, and d0 represents the distance (offset) between the normal LN passing through the center of the light-emitting part 51 and the normal LN” passing through the center of the wavelength selection part 52.

[0398] like Figure 24 As shown in B, the normal LN passing through the center of the light-emitting part 51 coincides with the normal LN” passing through the center of the wavelength selection part 52. However, it can also be configured such that the normal LN passing through the center of the light-emitting part 51 and the normal LN” passing through the center of the wavelength selection part 52 do not coincide with the normal LN' passing through the center of the lens member 53. That is, it can also be that D0 > 0 and d0 = 0.

[0399] like Figure 24 As shown in C, it can also be configured such that the normal LN passing through the center of the light-emitting part 51 is not the same as the normal LN” passing through the center of the wavelength selection part 52 and the normal LN' passing through the center of the lens member 53, while the normal LN” passing through the center of the wavelength selection part 52 is the same as the normal LN' passing through the center of the lens member 53. That is, it can also be configured such that D0 > 0, d0 > 0, or D0 = d0.

[0400] like Figure 25As shown, the normal LN passing through the center of the light-emitting part 51, the normal LN” passing through the center of the wavelength selection part 52, and the normal LN’ passing through the center of the lens member 53 can all be different. That is, D0 > 0, d0 > 0, and D0 ≠ d0 are all possible configurations. Here, it is preferable that the center of the wavelength selection part 52 ( Figure 25 The position indicated by the black quadrilateral is located at the center connecting the light-emitting part 51 and the center of the lens component 53. Figure 25 On the straight line LL (indicated by the black dot in the middle). Specifically, when the center of the light-emitting part 51 and the center of the wavelength selection part 52 are located on the line LL between the center of the light-emitting part 51 and the center of the wavelength selection part 52, and in the thickness direction ( Figure 25 When the distance in the vertical direction is set to LL1, and the distance in the thickness direction between the center of the wavelength selection unit 52 and the center of the lens component 53 is set to LL2,

[0401] D0 > d0 > 0,

[0402] Taking into account manufacturing variations, the following is preferred:

[0403] d0:D0=LL1:(LL1+LL2).

[0404] Here, the thickness direction refers to the thickness direction of the light-emitting part 51, the wavelength selection part 52, and the lens component 53.

[0405] The following is for reference Figure 26 A, Figure 26 B Figure 27 The relationship between the normals passing through the center of each part when the light-emitting part 51, the lens component 53, and the wavelength selection part 52 are arranged in this order will be explained.

[0406] like Figure 26 As shown in A, it can also be configured such that the normal LN passing through the center of the light-emitting part 51, the normal LN” passing through the center of the wavelength selection part 52, and the normal LN' passing through the center of the lens member 53 are the same. That is, it can also be configured such that D0 > 0 and d0 = 0.

[0407] like Figure 26 As shown in B, it can also be configured such that the normal LN passing through the center of the light-emitting part 51 is not the same as the normal LN” passing through the center of the wavelength selection part 52 and the normal LN' passing through the center of the lens member 53, while the normal LN” passing through the center of the wavelength selection part 52 is the same as the normal LN' passing through the center of the lens member 53. That is, it can also be configured such that D0 > 0, d0 > 0, or D0 = d0.

[0408] like Figure 27As shown, it is also possible to configure the normal LN passing through the center of the light-emitting part 51, the normal LN” passing through the center of the wavelength selection part 52, and the normal LN’ passing through the center of the lens member 53 to be different. Here, it is preferable that the center of the lens member 53 ( Figure 27 The position indicated by the black dot is located at the center of the light-emitting part 51 and the center of the wavelength selection part 52. Figure 27 On the straight line LL (where the position is indicated by the black quadrilateral in the middle). Specifically, on the line between the center of the light-emitting part 51 and the center of the lens member 53, and in the thickness direction ( Figure 27 When the distance in the vertical direction is set to LL2, and the distance in the thickness direction between the center of the lens component 53 and the center of the wavelength selection unit 52 is set to LL1,

[0409] d0>D0>0

[0410] Taking into account manufacturing variations, the following is preferred:

[0411] D0:d0=LL2:(LL1+LL2).

[0412] Here, the thickness direction refers to the thickness direction of the light-emitting part 51, the wavelength selection part 52, and the lens component 53.

[0413] <Example of a 6-resonator structure>

[0414] The sub-pixels included in the display device 101 according to the first embodiment, the display device 101 according to a variation of the first embodiment, the display device 102 according to the second embodiment, and the display device 102 according to a variation of the second embodiment can be configured to have a resonator structure that enables the light generated by the light-emitting element to resonate. The resonator structure will be described below with reference to the accompanying drawings. In the following description, the first surface of each layer will sometimes be referred to as the upper surface.

[0415] (Resonator Structure: First Example)

[0416] Figure 28 A is a schematic cross-sectional view used to illustrate the first example of the resonator structure. In the following description, unless otherwise specified, the light-emitting elements corresponding to sub-pixels 10R, 10G, and 10B are collectively referred to as light-emitting element 12. (The last sentence is a repetition of the first and can be omitted.) R 12 G 12 B Sometimes, the portions of OLED layer 122 corresponding to sub-pixels 10R, 10G, and 10B are referred to as OLED layer 122. R OLED layer 122 GOLED layer 122 B The light-emitting element is, for example, the light-emitting element 12W in the first embodiment, the light-emitting element 12W in the second embodiment, or the light-emitting element in variation 8.

[0417] In the first example, the first electrode 121 is formed with a common film thickness in each of the light-emitting elements 12. The same is true for the second electrode 123.

[0418] A reflector 71 is disposed below the first electrode 121 of the light-emitting element 12, with the optical adjustment layer 72 sandwiched between them. A resonator structure for causing the light generated by the OLED layer 122 to resonate is formed between the reflector 71 and the second electrode 123. In the following description, the optical adjustment layer 72, which is disposed corresponding to the sub-pixels 10R, 10G, and 10B respectively, is sometimes referred to as the optical adjustment layer 72. R 72 G 72 B .

[0419] The reflector 71 is formed with a common film thickness in each light-emitting element 12. The film thickness of the optical adjustment layer 72 varies depending on the color to be displayed by the sub-pixel. R 72 G 72 B Different film thicknesses allow for the setting of optical distances, through which optimal resonance is generated for the wavelength of light corresponding to the color to be displayed.

[0420] exist Figure 28 In the example shown in A, the reflector 71 is in the light-emitting element 12 R 12 G 12 B The upper surface of the second electrode 123 is configured for alignment. As described above, because the film thickness of the optical adjustment layer 72 varies depending on the color to be displayed by the sub-pixel, the position of the upper surface of the second electrode 123 is determined according to the light-emitting element 12. R 12 G 12 B Different types.

[0421] The reflector 71 can be formed, for example, from metals such as aluminum (Al), silver (Ag), copper (Cu) or alloys with them as the main components.

[0422] Optical adjustment layer 72 can use silicon nitride (SiN) x ), silicon oxide (SiO) x ), silicon oxynitride (SiO) x N yIt is composed of inorganic insulating materials such as α, β, γ ...

[0423] The first electrode 121 can be formed using transparent conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), and zinc oxide (ZnO).

[0424] The second electrode 123 needs to function as a semi-transparent reflective film. The second electrode 123 can be formed using magnesium (Mg), silver (Ag), or a magnesium-silver alloy (MgAg) with these as the main components, or it can be formed using alloys containing alkali metals or alkaline earth metals.

[0425] (Resonator Structure: Second Example)

[0426] Figure 28 B is a schematic cross-sectional view used to illustrate a second example of a resonator structure.

[0427] In the second example, the first electrode 121 and the second electrode 123 are also formed in each light-emitting element 12 with a common film thickness.

[0428] Furthermore, in the second example, a reflector 71 is also positioned below the first electrode 121 of the light-emitting element 12, with the optical adjustment layer 72 sandwiched between them. A resonator structure is formed between the reflector 71 and the second electrode 123 to resonate the light generated by the OLED layer 122. Similar to the first example, the reflector 71 is formed with a common film thickness in each light-emitting element 12, while the film thickness of the optical adjustment layer 72 varies depending on the color to be displayed by the sub-pixel.

[0429] exist Figure 28 In the first example shown in A, the reflector 71 is at the light-emitting element 12 R 12 G 12 B The upper surface of the second electrode 123 is configured to be aligned, and the position of the upper surface of the second electrode 123 is determined according to the light-emitting element 12. R 12 G 12 B Different types.

[0430] In contrast, Figure 28 In the second example shown in B, the upper surface of the second electrode 123 is configured to be on the light-emitting element 12 R 12 G 12 B Center alignment. To align the upper surface of the second electrode 123, on the light-emitting element 12... R 12 G 12 BIn the middle, the upper surface of the reflector 71 is configured according to the light-emitting element 12 R 12 G 12 B The type of light-emitting element 12 varies. Therefore, the lower surface of the reflector 71 (in other words, the upper surface of the substrate (insulating layer) 73) becomes a stepped shape corresponding to the type of light-emitting element 12.

[0431] The materials constituting the reflector 71, optical adjustment layer 72, first electrode 121, and second electrode 123 are the same as those described in the first example, so the description is omitted.

[0432] (Resonator Structure: Third Example)

[0433] Figure 29 A is a schematic cross-sectional view used to illustrate a third example of the resonator structure. In the following description, the reflector 71, which is provided corresponding to the sub-pixels 10R, 10G, and 10B respectively, is sometimes referred to as reflector 71. R 71 G 71 B .

[0434] In the third example, the first electrode 121 and the second electrode 123 are also formed in each light-emitting element 12 with a common film thickness.

[0435] Furthermore, in the third example, a reflector 71 is also positioned below the first electrode 121 of the light-emitting element 12, sandwiching the optical adjustment layer 72. A resonator structure for resonating the light generated by the OLED layer 122 is formed between the reflector 71 and the second electrode 123. Similar to the first and second examples, the thickness of the optical adjustment layer 72 varies depending on the color to be displayed by the sub-pixel. Also, similar to the second example, the upper surface of the second electrode 123 is positioned below the light-emitting element 12. R 12 G 12 B Center aligned.

[0436] exist Figure 29 In the second example shown in B, in order to align the upper surface of the second electrode 123, the lower surface of the reflector 71 is a stepped shape corresponding to the type of light-emitting element 12.

[0437] In contrast, Figure 29 In the third example shown in A, the film thickness of the reflector 71 is set according to the light-emitting element 12. R 12 G 12 B The types vary. More specifically, to make the reflector 71 R 71 G 71 B The film thickness is set in a manner consistent with the lower surface.

[0438] The materials constituting the reflector 71, optical adjustment layer 72, first electrode 121, and second electrode 123 are the same as those described in the first example, so the description is omitted.

[0439] (Resonator Structure: Fourth Example)

[0440] Figure 29 B is a schematic cross-sectional view used to illustrate the fourth example of the resonator structure. In the following description, the first electrode 121, which is respectively provided corresponding to sub-pixels 10R, 10G, and 10B, is sometimes referred to as the first electrode 121. R 121 G 121 B .

[0441] exist Figure 29 In the first example shown in A, the first electrode 121 and the second electrode 123 of each light-emitting element 12 are formed with a common film thickness. Moreover, a reflector 71 is provided below the first electrode 121 of the light-emitting element 12, with an optical adjustment layer 72 sandwiched between them.

[0442] In contrast, Figure 29 In the fourth example shown in B, the optical adjustment layer 72 is omitted, and the film thickness of the first electrode 121 is set according to the light-emitting element 12. R 12 G 12 B Different types.

[0443] The reflector 71 is formed with a common film thickness in each light-emitting element 12. The film thickness of the first electrode 121 varies depending on the color to be displayed by the sub-pixel. R 121 G 121 B Different film thicknesses allow for the setting of optical distances, through which optimal resonance is generated for the wavelength of light corresponding to the color to be displayed.

[0444] The materials constituting the reflector 71, optical adjustment layer 72, first electrode 121, and second electrode 123 are the same as those described in the first example, so the description is omitted.

[0445] (Resonator Structure: Fifth Example)

[0446] Figure 29 A is a schematic cross-sectional view used to illustrate the fifth example of a resonator structure.

[0447] exist Figure 28In the first example shown in A, the first electrode 121 and the second electrode 123 are formed in each light-emitting element 12 with a common film thickness. Moreover, a reflector 71 is provided below the first electrode 121 of the light-emitting element 12, with an optical adjustment layer 72 sandwiched between them.

[0448] In contrast, Figure 30 In the fifth example shown in A, the optical adjustment layer 72 is omitted, and instead, an oxide film 74 is formed on the surface of the reflector 71. The thickness of the oxide film 74 is set according to the light-emitting element 12. R 12 G 12 B The types vary. In the following description, the oxide film 74 corresponding to sub-pixels 10R, 10G, and 10B is sometimes referred to as oxide film 74. R 74 G 74 B .

[0449] The thickness of oxide film 74 varies depending on the color to be displayed by the sub-pixel. Oxide film 74 R 74 G 74 B Different film thicknesses allow for the setting of optical distances, through which optimal resonance is generated for the wavelength of light corresponding to the color to be displayed.

[0450] The oxide film 74 is a film obtained by oxidizing the surface of the reflector 71, and is composed of, for example, aluminum oxide, tantalum oxide, titanium oxide, magnesium oxide, zirconium oxide, etc. The oxide film 74 functions as an insulating film for adjusting the optical path length (optical distance) between the reflector 71 and the second electrode 123.

[0451] For example, the film thickness can be formed according to the light-emitting element 12 as follows. R 12 G 12 B Different types of oxide films 74.

[0452] First, an electrolyte is filled into a container, and the substrate on which the reflector 71 is formed is immersed in the electrolyte. Then, electrodes are arranged opposite to the reflector 71.

[0453] Then, a positive voltage is applied to the reflector 71 with reference to the electrode, and the reflector 71 is anodized. The thickness of the oxide film resulting from the anodization is proportional to the voltage applied to the electrode. Therefore, when applying voltage to the reflector 71... R 71 G 71 B Anodizing is performed under conditions where a voltage corresponding to the type of light-emitting element 12 is applied. As a result, oxide films 74 with different thicknesses can be formed simultaneously.

[0454] The materials constituting the reflector 71, the first electrode 121, and the second electrode 123 are the same as those described in the first example, so the description is omitted.

[0455] (Resonator Structure: Example 6)

[0456] Figure 30 B is a schematic cross-sectional view used to illustrate the sixth example of a resonator structure.

[0457] In the sixth example, the light-emitting element 12 is constructed by stacking a first electrode 121, an OLED layer 122, and a second electrode 123. However, in the sixth example, the first electrode 121 is formed to function as both an electrode and a reflector. The first electrode (also a reflector) 121 is constructed by stacking a first electrode 121, an OLED layer 122, and a second electrode 123 according to the light-emitting element 12. R 12 G 12 B The optical constants are formed from materials selected according to their type. Due to the different phase shifts of the first electrode (which also serves as a reflector) 121, an optical distance can be set to generate optimal resonance for the wavelength of light corresponding to the color to be displayed.

[0458] The first electrode (also serving as a reflector) 121 can be made of a single metal such as aluminum (Al), silver (Ag), gold (Au), or copper (Cu), or an alloy with these as the main components. For example, it can be configured such that the light-emitting element 12 is formed of copper (Cu). R First electrode (also a reflector) 121 R 12 Light-emitting elements are formed using aluminum. G First electrode (also a reflector) 121 G and light-emitting element 12 B First electrode (also a reflector) 121 B .

[0459] Regarding the materials constituting the second electrode 123, since they are the same as those described in the first example, the description is omitted.

[0460] (Resonator Structure: Seventh Example)

[0461] Figure 31 This is a schematic cross-sectional view used to illustrate the seventh example of a resonator structure.

[0462] The seventh example is basically achieved by adjusting the light-emitting element 12. R 12 G Applying the sixth example, and for the light-emitting element 12 B This configuration is obtained by applying the first example. Even in this configuration, it is possible to set the optical distance to generate optimal resonance for the wavelength of light corresponding to the color to be displayed.

[0463] Light-emitting element 12 R 12 G The first electrode (also serving as a reflector) used is 121. R 121 G It can be composed of single metals such as aluminum (Al), silver (Ag), gold (Au), and copper (Cu), or alloys with them as the main components.

[0464] Regarding the constituent light-emitting element 12 B The reflector used is 71 B Optical adjustment layer 72 B and the first electrode 121 B The materials, etc., are the same as those described in the first example, so the description is omitted.

[0465] <7 Application Examples>

[0466] (Electronic devices)

[0467] The display device 101 according to the first embodiment, the display device 101 according to a variation of the first embodiment, the display device 102 according to the second embodiment, and the display device 102 according to a variation of the second embodiment (hereinafter referred to as "the display device 101, etc. according to the first embodiment") can be included in various electronic devices. The display device 101, etc. according to the first embodiment are particularly suitable for eyeglasses such as head-mounted displays, or devices that require high resolution and are used for magnification near the eyes, such as electronic viewfinders of cameras or SLR cameras.

[0468] (Specific example 1)

[0469] Figure 32 A, Figure 32 Figure B shows an example of the appearance of a digital camera 310. The digital camera 310 is a lens-changeable single-lens reflex camera, with a replaceable photographic lens unit (replaceable lens) 312 located approximately in the center of the front of the camera body (camera body) 311, and a handle 313 for the photographer to hold on the left side of the front.

[0470] A monitor 314 is disposed at a position offset to the left from the center of the back of the camera body 311. An electronic viewfinder (eyepiece window) 315 is disposed at the top of the monitor 314. By observing the electronic viewfinder 315, the photographer can visually confirm the light image of the subject imported from the photographic lens unit 312 to determine the composition. The electronic viewfinder 315 includes any of the display devices 101 and the like according to the first embodiment.

[0471] (Specific example 2)

[0472] Figure 33 An example of the appearance of a head-mounted display 320 is shown. The head-mounted display 320 is an example of an eyeglass device. For example, the head-mounted display 320 has ear loops 322 on both sides of the eyeglass-shaped display section 321 for wearing on the user's head. The display section 321 includes any of the display devices 101 and the like according to the first embodiment.

[0473] (Specific example 3)

[0474] Figure 34 An example of the appearance of a television device 330 is shown. The television device 330, for example, has an image display screen 331 including a front panel 332 and a filter glass 333, which includes any of the display devices 101 and the like according to the first embodiment.

[0475] (Specific example 4)

[0476] Figure 35 An example of the appearance of a see-through head-mounted display 340 is shown. The see-through head-mounted display 340 is an example of an eyeglass device. The see-through head-mounted display 340 includes a main body 341, an arm 342, and a lens barrel 343.

[0477] The main body 341 is connected to the arm 342 and the glasses 350. Specifically, the long side of the main body 341 is connected to the arm 342, and one side of the main body 341 is connected to the glasses 350 via a connecting member. It should be noted that the main body 341 can also be worn directly on the human head.

[0478] The main body 341 houses a control board 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 the ends of the main body 341 and the lens barrel 343 respectively, and fixes the lens barrel 343 in place. Furthermore, a signal line is built into the arm 342 for communicating image-related data provided from the main body 341 to the lens barrel 343.

[0479] The lens tube 343 projects image light provided 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 this see-through head-mounted display 340, the display section of the main body 341 includes any of the display devices 101 and the like according to the first embodiment.

[0480] (Specific example 5)

[0481] Figure 36An example of the appearance of a smartphone 360 ​​is shown. The smartphone 360 ​​includes a display unit 361 for displaying various information and an operation unit 362, etc., consisting of buttons and the like that for accepting user input. The display unit 361 includes any of the display devices 101, etc., according to the first embodiment.

[0482] (Specific example 6)

[0483] The display device 101 and the like described in the first embodiment can also be provided by various displays provided by vehicles.

[0484] Figure 37 A and Figure 37 Figure B is an example of the internal configuration of a vehicle 500 equipped with various displays. Specifically, Figure 37 Figure A is an example showing the interior of the vehicle 500 from the rear to the front. Figure 37 Figure B is an example of the layout of the interior of the vehicle 500 from the rear to the front.

[0485] The 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 display devices 101, etc., according to the first embodiment. For example, all of these displays may include any of the display devices 101, etc., according to the first embodiment.

[0486] The central display 501 is located in a section of the dashboard opposite the driver's seat 508 and the passenger seat 509. Figure 37 A and Figure 37 Example B shows a horizontally elongated central display 501 extending from the driver's seat 508 side to the passenger seat 509 side, but the screen size and placement of the central display 501 are arbitrary. The central display 501 can display information detected by various sensors. As a specific example, it can display photographic images captured by an image sensor, distance images of obstacles in front of and to the sides of the vehicle 500 measured by a ToF sensor, and passenger body temperatures detected by an infrared sensor. The central display 501 can, for example, display at least one of the following: safety-related information, operational-related information, lifestyle logs, health-related information, authentication / identification-related information, and entertainment-related information.

[0487] Safety-related information includes information such as drowsiness detection, strabismus detection, detection of misbehaving children in the same vehicle, whether seat belts are worn, and passenger loss detection. This information is detected, for example, by sensors superimposed on the back side of the central display 501. Regarding operational information, sensors are used to detect gestures related to passenger actions. The detected gestures may also include operations on various devices within the vehicle 500. For example, operations on air conditioning, navigation, AV systems, and lighting are detected. The passenger log includes a log of all passengers' activities. For example, the log includes records of each passenger's actions during the journey. By acquiring and storing the passenger log, it is possible to confirm the passengers' condition at the time of an accident. Regarding health-related information, sensors such as temperature sensors are used to detect passengers' body temperature, and their health status is inferred based on the detected temperature. Alternatively, an image sensor can be used to capture images of passengers' faces, and their health status can be inferred based on the facial expressions captured in the images. Furthermore, passengers can be spoken to automatically via voice, and their health status can be inferred based on their responses. Authentication / identification-related information includes keyless entry functions that use sensors for facial authentication, and automatic seat height or position adjustments via facial recognition. Entertainment-related information includes functions that use sensors to detect passenger operation information on AV devices, and functions that recognize passengers' faces through sensors and provide passenger-appropriate content via AV devices.

[0488] The console display 502 can be used to display, for example, log information. The console display 502 is located near the gearshift lever 511 of the center console 510 between the driver's seat 508 and the passenger seat 509. Information detected by various sensors can also be displayed on the console display 502. Furthermore, the console display 502 can display images of the vehicle's surroundings captured by image sensors, as well as images showing the distances to obstacles around the vehicle.

[0489] The head-up display 503 is virtually displayed on the inside of the windshield 512 in front of the driver's seat 508. The head-up display 503 can be used to display at least one of the following: safety-related information, operation-related information, life log, health-related information, authentication / identification-related information, and entertainment-related information. Since the head-up display 503 is mostly virtually 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's speed and remaining fuel (battery) level.

[0490] Since the digital rearview mirror 504 can not only display the rear of the vehicle 500, but also the situation of the passengers in the rear seats, a sensor can be superimposed on the rear side of the digital rearview mirror 504 to display, for example, life log information.

[0491] The steering wheel display 505 is positioned near the center of the steering wheel 513 of the vehicle 500. The steering wheel display 505 can be used to display at least one of the following: safety-related information, operation-related information, personal logs, health-related information, authentication / identification-related information, and entertainment-related information. In particular, since the steering wheel display 505 is located near the driver's hands, it is suitable for displaying personal log information such as the driver's body temperature, or information related to the operation of AV devices, air conditioning equipment, etc.

[0492] The rear entertainment display 506 is mounted on the rear side of the driver's seat 508 and the front passenger seat 509 for viewing by rear passengers. The rear entertainment display 506 can display at least one of the following: safety-related information, operational-related information, lifestyle logs, health-related information, authentication / identification-related information, and entertainment-related information. In particular, since the rear entertainment display 506 is located in front of the rear passengers' eyes, it displays information relevant to them. For example, it may display information related to the operation of AV devices, air conditioning equipment, or results obtained by measuring the rear passengers' body temperature using a temperature sensor.

[0493] Alternatively, the display device 101 or similar device can be configured with sensors superimposed on the back side, enabling the measurement of distances to surrounding objects. Optical distance measurement methods are broadly categorized into passive and active types. Active methods measure distance by receiving light from an object, rather than projecting light from the sensor. Passive methods include lens focusing, stereoscopic methods, and monocular vision methods. Active methods measure distance by projecting light onto an object and receiving reflected light from the object through a sensor. Active methods include lidar, active stereoscopic methods, illuminance difference stereoscopic methods, moiré contour methods, and interference methods. The display device 101 or similar device according to the first embodiment can also be used for distance measurement using any of these methods. By using sensors superimposed on the back side of the display device 101 or similar device according to the first embodiment, both passive and active distance measurements can be performed.

[0494] Explanation of reference numerals in the attached figures

[0495] 10R, 10G, 10B: Subpixels; 11: Driving substrate; 12W: Light-emitting element; 13: Insulating layer; 14: Protective layer; 15: Planarization layer; 16: Color filter; 16FR, 16FG, 16FB: Colored parts; 17FBK: Light-shielding layer; 17FR, 17FB: Colored parts; 17A1, 17A2, 17A3, 17A4, 17A5, 17A6, 17A7, 17A8, 17A9, 17A 10 17A 11 17A 1217A 13 17A 14 17A 15 17ST: Height difference; 17TR, 17TG: Platform; 18, 21, 22, 181, 182: Peripheral layers; 19: Planarization layer; 20: Protective layer; 23: Adhesive layer; 24: Optical element; 101, 102: Display device; 101A: Pad; 121: First electrode; 122: OLED layer; 123: Second electrode; 124: Contact electrode; 131, 132: Opening; 310: Digital camera; 320: Head-mounted display; 330: Television device; 340: See-through head-mounted display; 360: Smartphone; 500: Vehicle; RE1: Display area; RE2: Peripheral area.

Claims

1. A display device comprising: A light-shielding layer surrounds the display area; A first peripheral layer surrounds the light-shielding layer; and A protective layer covering the light-shielding layer and the first peripheral layer. The light-shielding layer includes a first coloring layer and a second coloring layer, wherein the second coloring layer is disposed on the first coloring layer. The height of the upper surface of the first peripheral layer is lower than the height of the upper surface of the first coloring layer.

2. The display device according to claim 1, wherein, The first peripheral layer is made of the same material as the second coloring layer.

3. The display device according to claim 1, wherein, The outer end of the second coloring layer is recessed to a more inward position than the outer end of the first coloring layer.

4. The display device according to claim 3, wherein, The light-shielding layer includes a third coloring layer, which is disposed on the second coloring layer. The outer end of the third coloring layer is recessed to a position further inward than the outer end of the second coloring layer.

5. The display device according to claim 4, wherein, The display device further includes a second peripheral layer that surrounds the first peripheral layer. The first peripheral layer is made of the same material as the second coloring layer. The second peripheral layer is made of the same material as the third coloring layer.

6. The display device according to claim 1, wherein, The display device further includes a second peripheral layer that surrounds the first peripheral layer. The height of the upper surface of the second peripheral layer is lower than the height of the upper surface of the first peripheral layer.

7. The display device according to claim 1, wherein, The display device further includes a second peripheral layer that surrounds the first peripheral layer. The second peripheral layer is divided in the circumferential direction of the display area.

8. The display device according to claim 1, wherein, The display device further includes a second peripheral layer that surrounds the first peripheral layer. The first peripheral layer and the second peripheral layer are divided in the circumferential direction of the display area. The number of segmented parts in the second peripheral layer is greater than the number of segmented parts in the first peripheral layer.

9. The display device according to claim 1, wherein, The display device also has a third peripheral layer. The third peripheral layer is disposed on the platform portion, which is formed by retracting the outer end of the second coloring layer to a position further inward than the outer end of the first coloring layer. The third peripheral layer is recessed to a position further inward than the outer end of the first coloring layer, and the height of the upper surface of the third peripheral layer is lower than the height of the upper surface of the second coloring layer.

10. The display device according to claim 9, wherein, The display device further includes a planarization layer disposed between the light-shielding layer and the protective layer. The third peripheral layer is made of the same material as the planarization layer.

11. The display device according to claim 1, wherein, The display device further includes a planarization layer disposed between the light-shielding layer and the protective layer. The end of the planarization layer is recessed to a position further inward than the outer end of the second coloring layer.

12. The display device according to claim 11, wherein, The first peripheral layer is made of the same material as the planarization layer.

13. The display device according to claim 11, wherein, The display device further includes a second peripheral layer that surrounds the first peripheral layer. The first peripheral layer is made of the same material as the second coloring layer. The second peripheral layer is made of the same material as the planarization layer.

14. The display device according to claim 1, wherein, The display device further includes a planarization layer disposed between the light-shielding layer and the protective layer. The planarization layer covers the outer end of the light-shielding layer and the first peripheral layer, and the planarization layer comprises a positive photosensitive resin composition.

15. The display device according to claim 1, wherein, The first peripheral layer and the light-shielding layer form a stepped shape that descends three or more levels as it moves away from the display area.

16. A display device comprising: A light-shielding layer surrounds the display area; Multiple peripheral layers, having a concentric shape surrounding the light-shielding layer; and A protective layer covering the light-shielding layer and the plurality of peripheral layers. The spacing between the plurality of peripheral layers widens as they move away from the display area, or the width of the plurality of peripheral layers narrows as they move away from the display area.

17. The display device according to claim 16, wherein, The light-shielding layer includes a first coloring layer and a second coloring layer, wherein the second coloring layer is disposed on the first coloring layer. The plurality of peripheral layers are made of the same material as the first coloring layer.

18. The display device according to claim 16, wherein, The height of the plurality of peripheral layers decreases as they move away from the display area.

19. A display device comprising: A light-shielding layer surrounds the display area; Multiple peripheral layers, having a concentric shape surrounding the light-shielding layer; and A protective layer covering the light-shielding layer and the plurality of peripheral layers. The plurality of peripheral layers include a plurality of segmented peripheral layers that are divided in the circumferential direction of the display area. Regarding the number of segmented portions of the plurality of segmented peripheral layers, the farther away from the display area, the more segmented peripheral layers there are.

20. An electronic device comprising the display device of claim 1.

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