Light-emitting device

Abstract

Provided is a light-emitting device comprising: a substrate; a pixel region which is formed by arranging a plurality of light-emitting elements in a matrix configuration at the centre of the substrate; a peripheral part which is provided to the substrate so as to surround the pixel region; a protective film which is laminated on the pixel region and on the peripheral part; a groove which is provided to a portion of the protective film located above the peripheral part, and which passes through at least part of the protective film along the film thickness direction of the protective film; and one or a plurality of light-blocking parts which are provided inside the groove and block the propagation of light from the light-emitting elements.

Description

Light-emitting device

[0001] The present disclosure relates to a light emitting device.

[0002] Currently, there are various display devices (light-emitting devices) such as television sets, monitors, etc. A display device has a display surface at its center, and a drive circuit for the display surface, as well as electrodes and signal lines for inputting signals for driving the display surface from an external device, are provided around the display surface, i.e., on the outer periphery of the display device.

[0003] Japanese Patent Application Laid-Open No. 2017-102386

[0004] In such display devices (light-emitting devices), in order to prevent malfunction, it is necessary to keep a certain distance between the display surface and the electrodes and signal lines connected to the underlying wiring from an external device, which has limited the amount of space that can be taken up in reducing the size of the display device while increasing the display surface.

[0005] Therefore, the present disclosure proposes a light-emitting device (display device) that can prevent malfunction, increase the display surface, and reduce the external size.

[0006] According to the present disclosure, there is provided a light-emitting device comprising: a substrate; a pixel region formed in a central portion of the substrate by arranging a plurality of light-emitting elements in a matrix; a peripheral portion provided on the substrate so as to surround the pixel region; a protective film laminated on the pixel region and the peripheral portion; a groove provided in a portion of the protective film located above the peripheral portion and penetrating at least a portion of the protective film along a thickness direction of the protective film; and one or more light-shielding portions provided in the groove for blocking propagation of light from the light-emitting elements.

[0007] FIG. 1 is a cross-sectional view of a display device according to a comparative example; FIG. 2 is a cross-sectional view of a display device according to an embodiment of the present disclosure; FIG. 3 is a cross-sectional view (part 4) of a display device according to a first modification of an embodiment of the present disclosure; FIG. 4 is a cross-sectional view (part 5) of a display device according to a first modification of an embodiment of the present disclosure; FIG. 5 is a cross-sectional view (part 1) of a display device according to a second modification of an embodiment of the present disclosure; FIG. 6 is a cross-sectional view (part 2) of a display device according to a second modification of an embodiment of the present disclosure; FIG. 7 is a cross-sectional view (part 3) of a display device according to a second modification of an embodiment of the present disclosure; FIG. 8 is a cross-sectional view (part 1) of a display device according to a third modification of an embodiment of the present disclosure; FIG. 9 is a cross-sectional view (part 2) of a display device according to a third modification of an embodiment of the present disclosure; FIG. 10 is a cross-sectional view (part 3) of a display device according to a third modification of an embodiment of the present disclosure; FIG. 11 is a plan view (part 1) of a display device according to a fourth modification of an embodiment of the present disclosure; FIG. 12 is a plan view (part 2) of a display device according to a fourth modification of an embodiment of the present disclosure. FIG. 1 is a plan view (part 3) of a display device according to Modification 4 of the embodiment of the present disclosure. FIG. 2 is a plan view (part 4) of a display device according to Modification 4 of the embodiment of the present disclosure. FIG. 3 is a plan view (part 5) of a display device according to Modification 4 of the embodiment of the present disclosure. FIG. 4 is a plan view (part 1) of a display device according to Modification 5 of the embodiment of the present disclosure. FIG. 5 is a plan view (part 2) of a display device according to Modification 5 of the embodiment of the present disclosure. FIG. 6 is a plan view (part 6) of a display device according to Modification 5 of the embodiment of the present disclosure. FIG. 7 is a cross-sectional view of a display device according to Modification 6 of the embodiment of the present disclosure. FIG. 8 is an explanatory diagram (part 1) for describing a method of manufacturing a display device according to an embodiment of the present disclosure. FIG. 9 is an explanatory diagram (part 2) for describing a method of manufacturing a display device according to an embodiment of the present disclosure. FIG. 10 is an explanatory diagram (part 3) for describing a method of manufacturing a display device according to an embodiment of the present disclosure. FIG. 11 is an explanatory diagram (part 4) for describing a method of manufacturing a display device according to an embodiment of the present disclosure. FIG. 12 is an explanatory diagram (part 5) for describing a method of manufacturing a display device according to an embodiment of the present disclosure. FIG. 13 is an explanatory diagram (part 6) for describing a method of manufacturing a display device according to an embodiment of the present disclosure. FIG. 14 is a front view showing an example of an external appearance of a digital still camera. FIG. 15 is a rear view showing an example of an external appearance of a digital still camera.FIG. 1 is an external view of a head-mounted display; FIG. 2 is an external view of a see-through head-mounted display; FIG. 3 is an external view of a television device; FIG. 4 is an external view of a smartphone; FIG. 5 is a diagram (part 1) showing the internal configuration of a car; and FIG. 6 is a diagram (part 2) showing the internal configuration of a car.

[0008] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In this specification and the drawings, components having substantially the same functional configurations are designated by the same reference numerals, and redundant description will be omitted. Furthermore, in this specification and the drawings, multiple components having substantially the same or similar functional configurations may be distinguished by adding different letters after the same reference numeral. However, when there is no particular need to distinguish between multiple components having substantially the same or similar functional configurations, only the same reference numerals will be used.

[0009] The drawings referred to in the following description are for explaining and facilitating understanding of one embodiment of the present disclosure, and for the sake of clarity, the shapes, dimensions, ratios, etc. shown in the drawings may differ from the actual ones. Furthermore, the design of the devices shown in the drawings can be modified as appropriate, taking into consideration the following description and known technologies.

[0010] Furthermore, the descriptions of specific shapes in the following explanation do not only refer to geometrically defined shapes, but also include shapes that have industrially acceptable differences in the operation of the display device and in the manufacturing process of the display device, as well as shapes similar to those shapes.

[0011] In the following description of circuits (electrical connections), unless otherwise specified, "electrically connected" means connecting multiple elements so that electricity is conducted between them. In addition, in the following description, "electrically connected" includes not only cases where multiple elements are directly and electrically connected, but also cases where elements are indirectly and electrically connected via other elements.

[0012] Furthermore, in the following description, an embodiment of the present disclosure will be described using an example in which it is applied to a display device that displays images, but the embodiment of the present disclosure is not limited to being applied to such a display device, and may also be applied to a light-emitting device such as an illumination device that irradiates light.

[0013] The description will be given in the following order: 1. Background that led the inventors to create the embodiments of the present disclosure 2. Embodiments of the present disclosure 2.1 Detailed configuration 2.2 Modified examples 2.3 Manufacturing method 3. Summary 4. Application examples 5. Supplementary information

[0014] <<1. Background that led the inventors to create the embodiments of the present disclosure>> First, before describing the details of the embodiments of the present disclosure, the background that led the inventors to create the embodiments of the present disclosure will be described with reference to FIG. 1. FIG. 1 is a cross-sectional view of a display device 100a according to a comparative example, and more specifically, shows the vicinity of an end of the display device 100a in a cross section obtained by cutting the display device 100a along the film thickness direction of a backplane (BP) substrate 200. In addition, in FIG. 1, the display device 100a is positioned so that light emitted from the display device 100a is directed from bottom to top in the figure. Note that the comparative example here refers to the display device 100a that the inventors studied before creating the embodiments of the present disclosure.

[0015] As described above, there is a demand for a larger display surface and a smaller external size for the display device 100. An outline of the configuration of a display device 100a according to a comparative example will now be described.

[0016] As shown in FIG. 1 , the display device 100a of the comparative example has a layered structure in which a backplane (BP) substrate 200 and a glass substrate 270 are stacked on top of each other. A pixel region (not shown) in which a plurality of light-emitting elements 210 are arranged in a matrix is ​​provided in the center of the BP substrate 200 of the display device 100a. For example, the light-emitting element 210 can emit light and can be, for example, an organic light-emitting diode (OLED) or a micro-OLED. Furthermore, as shown in FIG. 1 , the light-emitting element 210 has a layered structure consisting of an anode electrode 212, an organic EL film 214, and a cathode electrode 216.

[0017] 1, a protective film 220 that transmits light from the organic EL film 214 and protects the light emitting element 210 is laminated on the cathode electrode 216. Also, as shown in Fig. 1, a color filter 230 is laminated on the protective film 220. The color filter 230 can be formed from, for example, a color filter that transmits a red wavelength component, a color filter that transmits a green wavelength component, or a color filter that transmits a blue wavelength component.

[0018] In addition, an on-chip lens 240 that guides light from the organic EL film 214 toward the upper side of the display device 100a is provided on the color filter 230. As shown in Fig. 1, the BP substrate 200 and the glass substrate 270 that are stacked on top of each other are sealed with a resin 250 located between the BP substrate 200 and the glass substrate 270. Furthermore, the outer periphery of the display device 100a is sealed with a sealing member 260 made of resin.

[0019] 1 , a driving IC 310 that drives the light-emitting element 210 is mounted on the periphery of the display device 100a according to the comparative example via an anisotropic conductive film (ACF) 320 above electrodes 300 and signal lines (not shown) to which signals for driving the light-emitting element 210 are input from an external device. Also, on the periphery of the display device 100a according to the comparative example, flexible printed circuits (FPC) 312 and the like, through which signal lines (not shown) are routed via the ACF 320, are provided above the electrodes 300 and the like.

[0020] 1, light emitted from the light-emitting element 210 may be reflected at interfaces of the color filter 230, the contact 280, etc., and propagate laterally within the protective film 220 in the direction indicated by the thin arrow in Fig. 1. If such laterally propagated light (electromagnetic waves) is incident on the electrodes 300 or signal lines on the periphery of the display device 100a through which signals from an external device pass, disturbance voltages / currents may be induced in the signal lines, which may cause malfunction of the display device 100a.

[0021] Therefore, in the display device 100a according to the comparative example, such malfunctions are prevented by separating the pixel region (not shown), in which a plurality of light-emitting elements 210 are arranged in a matrix, by a certain distance or more from the electrodes 300 and signal lines through which signals for driving the light-emitting elements 210 are input from an external device.

[0022] However, in the display device 100a according to the comparative example, it is necessary to separate the pixel region from the electrodes 300 and signal lines connecting to the underlying wiring from an external device by a certain distance or more, making it difficult to increase the display surface while reducing the external dimensions of the display device 100a. Furthermore, in eyeglass-type displays that realize AR (Augmented Reality) / VR (Virtual Reality), which have been attracting attention in recent years, high brightness and compactness are desired, but as brightness increases, the amount of light propagating laterally also increases, raising the risk of malfunction more than ever before. On the other hand, in eyeglass-type displays that realize AR / VR, if the countermeasure is taken by separating the light-emitting element 210 by a certain distance or more from the electrodes 300 and signal lines through which driving signals are input from an external device, as in the comparative example, it becomes difficult to achieve both this and compactness.

[0023] In view of the above circumstances, the present inventors have come up with the idea of ​​providing a light-shielding portion within the display device 100 to block light emitted from the light-emitting element 210 and prevent it from propagating to the electrodes 300 and signal lines on the periphery of the display device 100. According to the embodiments of the present disclosure created by the present inventors, by providing such a light-shielding portion, it is possible to reduce the external size of the display device 100 while avoiding malfunctions. Details of the embodiments of the present disclosure will be described below in order.

[0024] <<2. Embodiments of the Present Disclosure>> <2.1 Detailed Configuration> First, a detailed configuration of a display device (light-emitting device) 100 according to an embodiment of the present disclosure will be described with reference to Fig. 2. Fig. 2 is a cross-sectional view of the display device 100 according to an embodiment of the present disclosure, and more specifically, shows the vicinity of an end of the display device 100 in a cross section obtained when the display device 100 is cut along the film thickness direction of the BP substrate 200. In Fig. 2, the display device 100 is positioned so that light emitted by the display device 100 is directed from the bottom to the top in the figure.

[0025] As shown in FIG. 2, the display device 100 according to this embodiment also has a laminated structure in which a BP substrate (substrate) 200 and a glass substrate 270 are laminated together, similar to the comparative example.

[0026] The BP substrate 200 can be formed from a semiconductor substrate such as polycrystalline silicon, a resin substrate such as polymethyl methacrylate, polyvinyl alcohol, polyvinyl phenol, polyethersulfone, polyimide, polycarbonate, polyethylene terephthalate, or polyethylene naphthalate, or a glass substrate such as high strain point glass, soda glass, borosilicate glass, forsterite, lead glass, or quartz glass.

[0027] A pixel region 200a in which a plurality of light-emitting elements 210 are arranged in a matrix is ​​provided in the center of the BP substrate 200 of the display device 100. Furthermore, in this embodiment, the region surrounding the pixel region 200a is referred to as a peripheral region 200b. For example, the light-emitting elements 210 can emit light to form an image and can be, for example, OLEDs or micro-OLEDs. Furthermore, in this embodiment, the light-emitting elements 210 are not limited to light-emitting elements using organic materials such as OLEDs, but may also be light-emitting elements using inorganic materials.

[0028] As shown in FIG. 2, the light emitting element 210 has a laminated structure consisting of an anode electrode (first electrode) 212 , an organic EL film (light emitting layer) 214 , and a cathode electrode (second electrode) 216 .

[0029] The anode electrode 212 can be formed of a light-reflecting material such as aluminum (Al), an aluminum alloy, silver (Ag), or a silver alloy. The anode electrode 212 may also be a multilayer film, for example, having a configuration in which a transparent conductive layer and a light-reflecting layer are stacked. More specifically, the anode electrode 212 may have a configuration in which an aluminum alloy layer is used as a first layer (light-reflecting layer) and a transparent conductive layer such as indium tin oxide (ITO) or indium zinc oxide (IZO) is used as a second layer (transparent conductive layer). Furthermore, the anode electrode 212 may also have a configuration in which an inorganic hole injection layer and a light-reflecting layer are stacked. More specifically, the anode electrode 212 may have a configuration in which an aluminum alloy layer is used as a first layer (light-reflecting layer) and a transparent conductive layer such as titanium (Ti), titanium oxide (TiO), titanium nitride (TiN), molybdenum (Mo), or molybdenum oxide (MoO) is used as a second layer (inorganic hole injection layer). ３The anode electrode 212 may have a laminated structure with an inorganic material layer such as Ti or TiN. An inorganic material layer such as TiN may be provided as a base layer under the anode electrode 212.

[0030] The organic EL film 214 may be a laminate of light-emitting layers of three colors, for example, red, green, and blue, i.e., it may emit white light. Note that in this embodiment, the organic EL film 214 is not limited to a laminate capable of emitting white light, but may be a single layer or a laminate that emits light of one or more colors. The organic EL film 214 may have a structure in which, for example, 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, and an electron transport layer are sequentially laminated.

[0031] The hole injection layer can be made of, for example, hexaazatriphenylene (HAT), etc. The hole transport layer can be made of, for example, α-NPD [N,N'-di(1-naphthalyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine].

[0032] The red light-emitting layer contains, for example, at least one of a red light-emitting material, a hole transport material, an electron transport material, and a positive and negative charge transport material. The red light-emitting material may be fluorescent or phosphorescent. Specifically, the red light-emitting layer may be composed of, for example, 4,4-bis(2,2-diphenylvinyl)biphenyl (DPVBi) mixed with 30 wt % of 2,6-bis[(4'-methoxydiphenylamino)styryl]-1,5-dicyanonaphthalene (BSN).

[0033] The emission separation layer is a layer for adjusting the injection of carriers into the emission layers, and the balance of light emission of each color is adjusted by injecting electrons and holes into each emission layer through the emission separation layer. The emission separation layer can be composed of, for example, a 4,4'-bis[N-(1-naphthyl)-N-phenyl-amino]biphenyl derivative.

[0034] The blue light-emitting layer contains, for example, at least one of a blue light-emitting material, a hole transport material, an electron transport material, and a bipolar charge transport material. The blue light-emitting material may be fluorescent or phosphorescent. Specifically, the blue light-emitting layer may be composed of, for example, DPVBi mixed with 2.5 wt % of 4,4'-bis[2-{4-(N,N-diphenylamino)phenyl}vinyl]biphenyl (DPAVBi).

[0035] The green light-emitting layer contains, for example, at least one of a green light-emitting material, a hole transport material, an electron transport material, and a positive and negative charge transport material. The green light-emitting material may be fluorescent or phosphorescent. Specifically, the green light-emitting layer may be formed, for example, by mixing 5 wt % of coumarin 6 with DPVBi.

[0036] The electron transport layer may be made of, for example, BCP (2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline), Alq3 (aluminum quinolinol), Bphen (bathophenanthroline), etc. The electron transport layer is made up of at least one layer, and may include an electron transport layer doped with an alkali metal or alkaline earth metal. The electron transport layer doped with an alkali metal or alkaline earth metal can be configured by doping, for example, 0.5 to 15 wt % of a host material such as BCP (2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline), Alq3 (aluminum quinolinol), or Bphen (bathophenanthroline) with, for example, 0.5 to 15 wt % of an alkali metal such as lithium (Li), sodium (Na), potassium (K), rubidium (Rb), or cesium (Cs) or an alkaline earth metal such as magnesium (Mg), calcium (Ca), strontium (Sr), or barium (Ba) as a dopant material by co-evaporation.

[0037] The cathode electrode 216 can be made of a transparent conductive material with good light transmittance and a small work function. For example, the cathode electrode 216 can be made of indium zinc oxide (IZO). In this embodiment, the cathode electrode 216 may be electrically connected to the cathode electrode 216 of an adjacent light-emitting element 210 via a cathode wiring (wiring) (not shown). Furthermore, in this embodiment, the cathode electrode 216 may be electrically connected to a contact (contact electrode) 280 provided in the peripheral portion 200b on the BP substrate 200 via the cathode wiring. The cathode wiring may be made of, for example, indium zinc oxide (IZO).

[0038] 2, a protective film 220 that transmits light from the organic EL film 214 and protects the light emitting element 210 is laminated on the cathode electrode 216. The protective film 220 is made of, for example, silicon oxide (SiO ２ ), aluminum oxide (Al ２ O ３ ), titanium oxide (TiO ２ The insulating layer 10 can be formed from an oxide film such as silicon nitride (SiN), a nitride film such as silicon oxynitride (SiON), or a resin material such as an acrylic resin or an epoxy resin.

[0039] As shown in FIG. 2 , a color filter 230 is laminated on the protective film 220. The color filter 230 may be formed of a color filter that transmits red wavelength components, a color filter that transmits green wavelength components, or a color filter that transmits blue wavelength components. For example, the color filter 230 may be formed of a material with a refractive index of approximately 1.6 to 1.7, and more specifically, may be formed of a material in which a pigment or dye is dispersed in a transparent binder such as acrylic resin. More specifically, as shown in FIG. 2 , each color filter 230 is provided on the protective film 220 for each light-emitting element 210. Furthermore, a light-shielding film formed by laminating multiple color filters 230 of different colors may be provided above an ineffective pixel region (not shown) located on the periphery of the pixel region 200 a.

[0040] Furthermore, in this embodiment, a groove 402 is provided in a portion of the protective film 220 located above the peripheral portion 200b. The groove 402 is provided along the film thickness direction of the protective film 220 so as to penetrate at least a portion of the protective film 220. Furthermore, in this embodiment, a plurality of color filters 230 are embedded in the groove 402, thereby forming the light-shielding portion 400 according to this embodiment. More specifically, in the example shown in FIG. 2 , a stack of two color filters 230 having different colors is embedded in the groove 402. Furthermore, in this embodiment, the color filter 230 provided above the pixel region 200a may extend to the peripheral portion 200b and be embedded in the groove 402. In other words, in this embodiment, the color filter 230 in the groove 402 may extend to a region of the upper surface of the protective film 220 located above the peripheral portion 200b, and may further extend to a region of the upper surface of the protective film 220 located above the pixel region 200a.

[0041] In this embodiment, as shown in FIG. 2, the grooves 402 of the light-shielding portion 400 are provided closer to the outer periphery of the BP substrate 200 than the contacts 280 .

[0042] As described above, the color filter 230 transmits only predetermined wavelength components and therefore cannot transmit light of wavelengths other than the predetermined wavelength. In other words, the color filter 230 is a material that absorbs light of wavelengths other than the predetermined wavelength (e.g., light in the visible light range). Therefore, in this embodiment, even if light emitted from the light-emitting element 210 is reflected at the interface between the color filter 230, the contact 280, or the like and propagates laterally within the protective film 220 (thin arrows in FIG. 2 ), the light is blocked by the light-shielding portion 400, which is made of a groove 402 in which the light-absorbing color filter 230 is embedded. Therefore, this embodiment can prevent the light emitted from the light-emitting element 210 from entering the electrodes 300 and signal lines on the periphery of the display device 100 through which signals from external devices pass. As a result, this embodiment prevents light from inducing disturbance voltages / currents in signal lines, etc., and prevents malfunction of the display device 100.

[0043] In this embodiment, the light-shielding portion 400 refers to an element having a function of blocking light emitted from the light-emitting element 210, thereby preventing the light from propagating to the electrodes 300 and signal lines, etc., which are located on the periphery of the display device 100 and through which signals from an external device pass, i.e., a portion having a light-shielding function to prevent light from propagating to the electrodes 300 and signal lines. Therefore, in this embodiment, the light-shielding portion 400 may absorb light, or may reflect, refract, or scatter light at the interface of the light-shielding portion 400.

[0044] Furthermore, on the color filter 230, an on-chip lens 240 is provided to guide light from the organic EL film 214 toward the upper side of the display device 100. The on-chip lens 240 can be formed from a styrene-based resin, an acrylic-based resin, a styrene-acrylic copolymer-based resin, a siloxane-based resin, or the like. In detail, as shown in FIG. 2 , the on-chip lens 240 is provided in the shape of a lens for each light-emitting element 210 in the pixel region, for example.

[0045] Furthermore, the glass substrate 270 provided above the protective film 220 can be formed from a glass substrate such as high strain point glass, soda glass, borosilicate glass, forsterite, lead glass, or quartz glass, or a resin substrate such as polymethyl methacrylate, polyvinyl alcohol, polyvinyl phenol, polyether sulfone, polyimide, polycarbonate, polyethylene terephthalate, or polyethylene naphthalate.

[0046] 2, in this embodiment as well, the BP substrate 200 and the glass substrate 270 stacked on top of each other are sealed by a resin 250 located between the BP substrate 200 and the glass substrate 270. Furthermore, the outer periphery of the stack of the BP substrate 200 and the glass substrate 270 is sealed by a sealing member (sealing material) 260 made of resin and provided on the outer periphery of the glass substrate 270. As shown in FIG. 2, the groove 402 is located below the sealing member 260.

[0047] 2, in the display device 100 according to this embodiment, a driving IC 310 that drives the light-emitting element 210 is mounted on the outer periphery of the BP substrate 200 that is not covered with the protective film 220, above the electrodes 300 and signal lines (not shown) to which signals for driving the light-emitting element 210 are input from an external device, via an ACF 320. Also, on the outer periphery of the display device 100 according to this embodiment, an FPC 312, through which signal lines are routed, is provided above the electrodes 300, etc., via the ACF 320. Therefore, in this embodiment, as shown in FIG. 2, the groove 402 is provided between the pixel region 200a and the electrodes 300.

[0048] As described above, in this embodiment, even if light emitted from the light-emitting element 210 is reflected at the interfaces of the color filter 230, the contact 280, and the like and propagates laterally within the protective film 220 (thin arrow in FIG. 2 ), the light is blocked by the light-shielding portion 400, which is formed by the groove 402 in which the light-absorbing color filter 230 is embedded. Therefore, this embodiment prevents the light emitted from the light-emitting element 210 from being incident on the electrodes 300 and signal lines on the periphery of the display device 100. As a result, this embodiment prevents the light from inducing disturbance voltages / currents in the signal lines, etc., and thus prevents malfunction of the display device 100. Furthermore, since malfunction does not occur in this embodiment, it is no longer necessary to separate the pixel region 200a and the electrodes 300, etc., by a certain distance or more, thereby enabling the outer dimensions of the display device 100 to be made smaller (thick arrow in FIG. 2 ). In addition, the outer dimensions of the display device 100 can be made smaller, thereby reducing the manufacturing cost of the display device 100. Furthermore, by applying this technology to glasses-type displays that realize AR / VR, it is possible to achieve high brightness and compactness while reducing the risk of malfunction.

[0049] In this embodiment, the display device 100 is not limited to the form shown in FIG. 2, and may be provided with a plurality of light-shielding portions 400, for example.

[0050] 2.2 Modifications (Modification 1) Next, a detailed configuration of the display device 100 according to Modification 1 of the embodiment of the present disclosure will be described with reference to Fig. 3 to Fig. 7. Fig. 3 to Fig. 7 are cross-sectional views of the display device 100 according to Modification 1 of the embodiment of the present disclosure, and more specifically, show a cross section of the display device 100 cut along the film thickness direction of the BP substrate 200, near an end of the stack of the BP substrate 200 and the glass substrate 270 of the display device 100. In Fig. 3 to Fig. 7, the display device 100 is positioned so that light emitted from the display device 100 is directed from the bottom to the top in the figures.

[0051] In Modification 1 shown in FIG. 3 , one color filter 230 is embedded in the groove 402 to form the light-shielding portion 400. That is, in this embodiment and Modification 1, the number of color filters 230 embedded in the groove 402 is not limited as long as the light emitted from the light-emitting element 210 can be prevented from propagating to the electrode 300, the signal line, etc. Therefore, in Modification 1, the light-shielding portion 400 may have one color filter 230 or may have a stack of two or more color filters 230. Furthermore, in this embodiment and Modification 1, the type of color filter 230 embedded in the groove 402 is not limited as long as the light emitted from the light-emitting element 210 can be prevented from propagating to the electrode 300, the signal line, etc. Therefore, in Modification 1, the light-shielding portion 400 may have, for example, a color filter that transmits a red wavelength component, a color filter that transmits a green wavelength component, a color filter that transmits a blue wavelength component, etc.

[0052] 4, a light-shielding portion 400a is formed by filling the groove 402 with black resin as a material that absorbs light (light-absorbing material). According to this modification 1, by providing the light-shielding portion 400a containing the black resin that absorbs light, the light emitted from the light-emitting element 210 is blocked by the light-shielding portion 400a, and therefore the light is less likely to be incident on the electrode 300, the signal line, etc.

[0053] 5 , a material that scatters light (light-scattering material), such as a transparent material having a refractive index different from that of the protective film 220, or a porous material, may be embedded in the groove 402. In this modification 1, the transparent material having a refractive index different from that of the protective film 220 may be a material having a refractive index higher than that of the protective film 220, or a material having a refractive index lower than that of the protective film 220, and these materials may be resin or inorganic materials.

[0054] According to the present modification 1, by providing the light-shielding portion 400b containing a light-scattering material, the light emitted from the light-emitting element 210 is scattered and refracted at the interface of the light-shielding portion 400b, and is therefore less likely to be incident on the electrode 300 or the signal line. Note that in the present modification 1, the side surface of the groove 402 may be roughened, which enables the light to be more effectively scattered at the interface of the light-shielding portion 400b.

[0055] 6 , a light-reflecting material (light-reflecting material), such as a metal material, is embedded in the groove 402 to form a light-shielding portion 400c. According to the present modification 1, by providing the light-shielding portion 400c having a light-reflecting metal material, the light emitted from the light-emitting element 210 is blocked by the light-shielding portion 400c, and therefore is less likely to be incident on the electrode 300, the signal line, etc.

[0056] 7, the groove 402 is provided with a void to form a light-shielding portion 400d. According to this modification 1, by providing the light-shielding portion 400d made of a void, the light emitted from the light-emitting element 210 is scattered at the interface of the light-shielding portion 400d, and is therefore less likely to be incident on the electrode 300, the signal line, etc. In this modification 1, the side surface of the groove 402 may be roughened, which allows the light to be more effectively scattered at the interface of the light-shielding portion 400d.

[0057] (Variation 2) Next, a detailed configuration of the display device 100 according to Variation 2 of the embodiment of the present disclosure will be described with reference to Figures 8 to 10. Figures 8 to 10 are cross-sectional views of the display device 100 according to Variation 2 of the embodiment of the present disclosure, and more specifically, show a cross section of the display device 100 cut along the film thickness direction of the BP substrate 200, near an end of the stack of the BP substrate 200 and the glass substrate 270 of the display device 100. In addition, in Figures 8 to 10, the display device 100 is positioned so that light emitted by the display device 100 is directed from the bottom to the top in the figures.

[0058] In Modification 2 shown in FIG. 8 , the grooves 402a constituting the light-shielding portion 400 may have a tapered shape widening upward in the figure, i.e., a trapezoidal shape with the top side longer than the bottom side in a cross section obtained when the display device 100a is cut along the film thickness direction of the BP substrate 200. That is, in Modification 2, the light-shielding portion 400 has a trapezoidal shape widening upward in the figure. Grooves 402a of this shape are easy to form, and therefore, an increase in the manufacturing time of the display device 100 due to the provision of the light-shielding portion 400 can be suppressed. Furthermore, in Modification 2, the grooves 402a may be located not only below the sealing member 260 but also closer to the pixel region 200a in the center of the BP substrate 200 than the sealing member 260.

[0059] 9, the grooves 402b constituting the light-shielding portion 400 may have a tapered shape widening downward in the figure, i.e., a trapezoidal shape with the top side shorter than the bottom side in a cross section obtained when the display device 100a is cut along the film thickness direction of the BP substrate 200. That is, in this modification 2, the light-shielding portion 400 has a trapezoidal shape widening downward in the figure. In addition, in this modification 2, the grooves 402b may be located not only below the sealing member 260 but also closer to the pixel region 200a in the center of the BP substrate 200 than the sealing member 260.

[0060] 10, the groove 402c constituting the light-shielding portion 400 may have a stepped shape that widens upward in the figure. That is, in this modification 2, the light-shielding portion 400 has a stepped shape that widens upward in the figure. The groove 402c having such a shape can be easily formed by performing etching multiple times. In this modification 2, the groove 402c may be located closer to the pixel region 200a in the center of the BP substrate 200 than the sealing member 260.

[0061] (Variation 3) Next, a detailed configuration of the display device 100 according to Variation 3 of the embodiment of the present disclosure will be described with reference to Figures 11 to 13. Figures 11 to 13 are cross-sectional views of the display device 100 according to Variation 3 of the embodiment of the present disclosure, and more specifically, show a cross section of the display device 100 cut along the film thickness direction of the BP substrate 200, near an end of the stack of the BP substrate 200 and the glass substrate 270 of the display device 100. In addition, in Figures 11 to 13, it is assumed that the display device 100 is positioned so that light emitted by the display device 100 is directed from the bottom to the top in the figures.

[0062] 11 , the grooves 402d constituting the light-shielding portion 400 penetrate the entire protective film 220 along the thickness direction of the protective film 220 and reach the upper surface of the BP substrate 200. According to this modification 3, the light-shielding portion 400 made of the grooves 402d that penetrate the entire protective film 220 and reach the upper surface of the BP substrate 200 can block all of the light emitted by the light-emitting element 210. Furthermore, in this modification 3, the grooves 402d may be located closer to the pixel region 200a in the center of the BP substrate 200 than the sealing member 260.

[0063] 12 , the grooves 402e constituting the light-shielding portion 400 penetrate the entire protective film 220 along the film thickness direction of the protective film 220 and further penetrate a portion of the BP substrate 200 along the film thickness direction of the BP substrate 200. According to this modification 3, the light-shielding portion 400 including the grooves 402e penetrating a portion of the BP substrate 200 can block all of the light emitted by the light-emitting element 210. Note that in this modification 3, the grooves 402e may penetrate the entire BP substrate 200 along the film thickness direction of the BP substrate 200 as long as there are no problems with strength, etc. Also, in this modification 3, the grooves 402e may be located closer to the pixel region 200a in the center of the BP substrate 200 than the sealing member 260.

[0064] 13 , the groove 402f constituting the light-shielding portion 400 penetrates a portion of the protective film 220 along the film thickness direction of the protective film 220. According to this modification 3, by providing the groove 402f of the light-shielding portion 400 so as to penetrate a portion of the protective film 220, the light-shielding portion 400 does not interfere with the routing of, for example, the cathode wiring (not shown) that electrically connects the cathode electrode 216 and the contact 280. Also, in this modification 3, the groove 402f may be located closer to the pixel region 200a in the center of the BP substrate 200 than the sealing member 260.

[0065] (Modification 4) Next, a detailed configuration of the display device 100 according to Modification 4 of the embodiment of the present disclosure will be described with reference to Fig. 14 to Fig. 18. Fig. 14 to Fig. 18 are plan views of the display device 100 according to Modification 4 of the embodiment of the present disclosure, and more specifically, are plan views of the display device 100 as seen from above.

[0066] 14 , the light-shielding portion 400 is provided so as to extend linearly along one side of the outer periphery of the pixel region 200 a. In detail, in this modification 4, the light-shielding portion 400 is provided between the pixel region 200 a and the driving IC 310 mounted on the electrode 300 so as to extend parallel to the driving IC 310 and to the same length as the driving IC 310.

[0067] 15 , the light-shielding portion 400 is provided so as to extend along one side of the outer periphery of the pixel region 200 a. More specifically, in this modification 4, the light-shielding portion 400 extends between the pixel region 200 a and the driver IC 310 mounted on the electrode 300, parallel to the driver IC 310, and longer than the driver IC 310. According to this modification 4, by making the light-shielding portion 400 longer than the driver IC 310, light emitted from the light-emitting element 210 is less likely to be incident on the electrode 300, signal lines, etc. located below the driver IC 310.

[0068] 16 , the light-shielding portion 400 is provided so as to surround the pixel region 200a along the four sides of the periphery of the pixel region 200a. According to this modification 4, by providing the light-shielding portion 400 so as to surround the pixel region 200a, the light-shielding portion 400 can block all of the light emitted by the light-emitting element 210. In addition, the light-shielding portion 400 prevents light from leaking outside the display device 100.

[0069] 17 , the light-shielding portion 400 is provided so as to extend in a zigzag (triangular wave) shape along one side of the outer periphery of the pixel region 200 a. According to this modification 4, by providing the light-shielding portion 400 in a zigzag shape, it is possible to scatter the light emitted from the light-emitting element 210 and to prevent the light from entering the electrode 300 located below the driving IC 310. Furthermore, in this modification 4, the light-shielding portion 400 is not limited to a zigzag shape, and may be a sinusoidal wave shape, an uneven shape (rectangular wave shape), or a random curved shape.

[0070] 18 , the light-shielding portion 400 is provided in the shape of a frame with four rounded corners that surrounds the pixel region 200a along the four sides of the periphery of the pixel region 200a. According to this modification 4, by providing the light-shielding portion 400 so as to surround the pixel region 200a, the light-shielding portion 400 can block all of the light emitted by the light-emitting element 210. In addition, the light-shielding portion 400 prevents light from leaking outside the display device 100.

[0071] In the fourth modification, the width of the light-shielding portion 400 (the length along the vertical direction in the drawing) is not limited.

[0072] (Modification 5) Next, a detailed configuration of the display device 100 according to Modification 5 of the embodiment of the present disclosure will be described with reference to Fig. 19 and Fig. 20. Fig. 19 and Fig. 20 are plan views of the display device 100 according to Modification 5 of the embodiment of the present disclosure, and more specifically, plan views of the display device 100 as seen from above.

[0073] 19 , the light-shielding portions 400e, 400f, and 400g are provided so as to extend linearly and parallel to one another along one side of the outer periphery of the pixel region 200a. Specifically, in this modification 5, the light-shielding portions 400e, 400f, and 400g have, for example, color filters 230 of different colors. According to this modification 5, by providing a plurality of light-shielding portions 400e, 400f, and 400g, the light emitted from the light-emitting element 210 is blocked by these light-shielding portions 400e, 400f, and 400g, making it difficult for the light to be incident on the electrode 300 located below the driving IC 310.

[0074] 20 , the light-shielding portions 400e, 400f, and 400g are arranged along one side of the outer periphery of the pixel region 200a, but have different lengths or are arranged alternately with respect to the pixel region 200a. That is, the present modification 5 is not limited to a configuration in which a plurality of light-shielding portions 400 of the same length extend in parallel, and the light-shielding portions 400 of different lengths may be arranged alternately.

[0075] In this modification 5, the number of light-shielding portions 400 is not particularly limited as long as it is two or more. Furthermore, not only may the materials embedded in the grooves 402 of the light-shielding portions 400 differ from one another, but the shapes of the grooves 402, the lengths thereof that penetrate the protective film 220, and the shapes, widths, and lengths of the light-shielding portions 400 in a plan view may also differ from one another. Furthermore, this modification 4 may be combined with the above-described modification 4. In this way, it is possible to provide each light-shielding portion 400 in a suitable manner depending on its position within the display device 100.

[0076] (Variation 6) Next, a detailed configuration of a display device 100 according to Variation 6 of the embodiment of the present disclosure will be described with reference to Fig. 21 . Fig. 21 is a cross-sectional view of the display device 100 according to Variation 6 of the embodiment of the present disclosure, and more specifically, shows a cross section of the display device 100 cut along the film thickness direction of the BP substrate 200, in the vicinity of an end of the stack of the BP substrate 200 and the glass substrate 270 of the display device 100. In Fig. 21 , the display device 100 is positioned so that light emitted by the display device 100 is directed from the bottom to the top in the figure.

[0077] 21 , the light-shielding portion 400h (groove 402) may be located closer to the pixel region 200a in the center of the BP substrate 200 than the contact 280. In such a case, a cathode wiring (wiring) 216a that electrically connects the cathode electrode 216 of the light-emitting element 210 to the contact 280 may be provided in the groove 402 of the light-shielding portion 400h. Alternatively, in this modification 6, the cathode wiring 216a may be routed so as to avoid the light-shielding portion 400h.

[0078] According to the sixth modification, the light-shielding portion 400h is provided closer to the pixel region 200a in the center of the BP substrate 200 than the contact 280, thereby making it possible to further reduce the outer size of the display device 100.

[0079] (Variation 7) Next, a detailed configuration of a display device 100b according to Variation 7 of the embodiment of the present disclosure will be described with reference to Fig. 22. Fig. 22 is a cross-sectional view of the display device 100b according to Variation 7 of the embodiment of the present disclosure, and more specifically, shows a cross section of the display device 100b cut along the film thickness direction of the BP substrate 200, in the vicinity of an end of the stack of the BP substrate 200 and the glass substrate 270 of the display device 100b. In Fig. 22, the display device 100b is positioned so that light emitted by the display device 100 is directed from the bottom to the top in the figure.

[0080] In Modification 7 shown in Figure 22, black resin is embedded in the grooves 402 of the light-shielding portion 400i. Furthermore, in this Modification 7, the black resin embedded in the grooves 402 extends above the ineffective pixel region (not shown) located on the periphery of the pixel region 200a. Also, in this Modification 7, a protective film 220 is laminated on the periphery of the BP substrate 200, and electrodes 302, ACF 320, driver IC 310, signal lines (not shown), etc. are provided on the peripheral protective film 220. Even in such a configuration as shown in Figure 22, light emitted from the light-emitting element 210 is blocked by the light-shielding portion 400i.

[0081] In the embodiments and modifications of the present disclosure, the display device 100 is not limited to the forms shown in FIGS. 2 to 22, but can have various forms.

[0082] 2.3 Manufacturing Method Next, a method for manufacturing the display device 100 according to this embodiment will be described with reference to Fig. 23A to Fig. 23F. Fig. 23A to Fig. 23F are explanatory views for explaining the method for manufacturing the display device 100 according to this embodiment, and correspond to the cross-sectional views shown in Fig. 2 in detail.

[0083] First, as shown in the upper part of Fig. 23A, a wiring layer 202 is formed on a BP substrate 200, and then an anode electrode 212, an organic EL film 214, and a cathode electrode 216 are laminated. Next, a protective film 222 and a protective film 224 are laminated on the cathode electrode 216. Then, as shown in the lower part of Fig. 23A, the protective film 224 located on the periphery of the display device 100 is removed.

[0084] Next, as shown in the upper part of Fig. 23B , grooves 410 are formed to separate the light-emitting elements 210. Then, as shown in the lower part of Fig. 23B , a protective film 226 is laminated, and as shown in the upper part of Fig. 23C , a groove 412 is formed in the center of each light-emitting element 210 by etching (dry etching or wet etching), thereby exposing the upper surface of the cathode electrode 216. At this time, the groove 402 of the light-shielding portion 400 can also be formed at the same time. Furthermore, as shown in the lower part of Fig. 23C , a cathode wiring 216a is formed to cover part of the side surface of the groove 412, and a protective film 228 is laminated to cover the cathode wiring 216a.

[0085] Next, as shown in the upper part of Fig. 23D, the cathode wiring 216a and the protective film 228 in the groove 402 are removed. Furthermore, as shown in the lower part of Fig. 23D, a protective film 232 is laminated. Then, as shown in the upper part of Fig. 23E, a protective film 234 made of a low refractive index material is laminated so as to fill the groove 412, and a protective film 236 made of a high refractive index material is laminated on the protective film 234. Furthermore, as shown in the lower part of Fig. 23E, color filters 230g and 230r are laminated on the protective film 236, and the color filter 230r is also buried in the groove 402.

[0086] Furthermore, as shown in FIG. 23F, by laminating a color filter 230b, a light-shielding portion 400 can be formed within the dashed circle.

[0087] As described above, the display device 100 according to the embodiment of the present disclosure can be easily formed without significantly changing the conventional manufacturing method, i.e., without increasing the number of steps, and as a result, according to the present embodiment, there is no increase in manufacturing costs.

[0088] Furthermore, the display device 100 according to this embodiment can be manufactured using methods, devices, and conditions that are used in the manufacture of general semiconductor devices and electronic devices. Each layer of the display device 100 according to this embodiment can be manufactured using, for example, an existing semiconductor device manufacturing method.

[0089] Examples of the above-mentioned method include a PVD (Physical Vapor Deposition) method, a CVD (Chemical Vapor Deposition) method, and an ALD (Atomic Layer Deposition) method. Examples of PVD methods include vacuum deposition, EB (electron beam) deposition, various sputtering methods (magnetron sputtering, RF (radio frequency)-DC (direct current) combined bias sputtering, ECR (electron cyclotron resonance) sputtering, facing target sputtering, high frequency sputtering, etc.), ion plating, laser ablation, molecular beam epitaxy (MBE), and laser transfer. Examples of CVD methods include plasma CVD, thermal CVD, metal organic (MO) CVD, and photo CVD. Other methods include various printing methods such as electroplating, electroless plating, spin coating, dipping, casting, microcontact printing, drop casting, screen printing, inkjet printing, offset printing, gravure printing, and flexographic printing, as well as various coating methods such as stamping, spraying, air doctor coating, blade coating, rod coating, knife coating, squeeze coating, reverse roll coating, transfer roll coating, gravure coating, kiss coating, cast coating, spray coating, slit orifice coating, and calendar coating. Furthermore, patterning methods include chemical etching such as shadow masking, laser transfer, and photolithography, and physical etching using ultraviolet light or a laser. Additionally, planarization techniques include CMP (Chemical Mechanical Polishing), laser planarization, and reflow.

[0090] <<3. Summary>> As described above, in the embodiment of the present disclosure, even if light emitted from the light-emitting element 210 is reflected at the interface between the color filter 230, the contact 280, or the like and propagates laterally within the protective film 220, the light is blocked by the light-shielding portion 400. Therefore, according to this embodiment, it is possible to prevent the light emitted from the light-emitting element 210 from being incident on the electrodes 300 or signal lines on the periphery of the display device 100. As a result, according to this embodiment, disturbance voltages / currents are not induced in the signal lines or the like by the light, and malfunction of the display device 100 does not occur. Furthermore, since malfunction does not occur in this embodiment, it is not necessary to separate the pixel region 200a and the electrodes 300, etc., by a certain distance or more, and the outer dimensions of the display device 100 can be made smaller. In addition, since the outer dimensions of the display device 100 can be made smaller, the manufacturing cost of the display device 100 can be reduced.

[0091] The technology of the present disclosure may be applied not only to the display device 100 but also to a light-emitting device such as a lighting device.

[0092] <<4. Application Examples>> For example, the technology according to the present disclosure may be applied to display devices of various electronic devices, etc. Therefore, examples of electronic devices to which the technology can be applied will be described below.

[0093] 24A is a front view showing an example of the appearance of a digital still camera 500, and Fig. 24B is a rear view showing an example of the appearance of the digital still camera 500. This digital still camera 500 is an interchangeable lens single-lens reflex type, and has an interchangeable taking lens unit (interchangeable lens) 512 located approximately in the center of the front of a camera main body 511, and a grip part 513 for the photographer to hold on the left side of the front.

[0094] A monitor 514 is provided at a position shifted to the left from the center on the back of the camera body 511. An electronic viewfinder (eyepiece window) 515 is provided above the monitor 514. By looking through the electronic viewfinder 515, the photographer can visually confirm the optical image of the subject guided by the photographing lens unit 512 and determine the composition. The display device 100 according to an embodiment of the present disclosure can be used as the monitor 514 or the electronic viewfinder 515.

[0095] 25 is an external view of a head-mounted display 600. The head-mounted display 600 has, for example, ear hooks 612 on both sides of a glasses-shaped display unit 611 for wearing on the user's head. In this head-mounted display 600, the display device 100 according to an embodiment of the present disclosure can be used as the display unit 611.

[0096] 26 is an external view of a see-through head mounted display 634. The see-through head mounted display 634 is composed of a main body 632, an arm 633, and an eyepiece tube 631.

[0097] The main body 632 is connected to the arm 643 and the glasses 630. Specifically, an end of the long side of the main body 632 is coupled to the arm 633, and one side of the main body 632 is connected to the glasses 630 via a connecting member. The main body 632 may also be worn directly on the head of the human body.

[0098] The main body 632 incorporates a control board for controlling the operation of the see-through head-mounted display 634 and a display unit. The arm 633 connects the main body 632 to the lens barrel 631 and supports the lens barrel 631. Specifically, the arm 633 is coupled to an end of the main body 632 and an end of the lens barrel 631, respectively, and fixes the lens barrel 631. The arm 633 also incorporates a signal line for communicating data related to images provided from the main body 632 to the lens barrel 631.

[0099] The lens barrel 631 projects image light provided from the main body 632 via the arm 633 through an eyepiece lens toward the eyes of a user wearing the see-through head mounted display 634. In this see-through head mounted display 634, the display unit of the main body 632 can use the display device 100 according to an embodiment of the present disclosure.

[0100] 27 shows an example of the appearance of a television device 710. This television device 710 has, for example, an image display screen unit 711 including a front panel 712 and a filter glass 713, and this image display screen unit 711 is configured by the display device 100 according to an embodiment of the present disclosure.

[0101] 28 shows an example of the appearance of a smartphone 800. The smartphone 800 has a display unit 802 that displays various information, an operation unit that includes buttons and the like that accept operation inputs from a user, and the like. The display unit 802 can be the display device 100 according to this embodiment.

[0102] 29A and 29B are diagrams showing the internal configuration of a vehicle having the display device 100 according to an embodiment of the present disclosure as a display device. In detail, Fig. 29A is a diagram showing the state of the interior of the vehicle from the rear to the front of the vehicle, and Fig. 29B is a diagram showing the state of the interior of the vehicle from diagonally rear to diagonally front of the vehicle.

[0103] 29A and 29B has a center display 911, a console display 912, a head-up display 913, a digital rearview mirror 914, a steering wheel display 915, and a rear entertainment display 916. The display device 100 according to an embodiment of the present disclosure can be applied to some or all of these displays.

[0104] The center display 911 is disposed on the center console 907 in a position facing the driver's seat 901 and the passenger seat 902. While FIGS. 29A and 29B show an example of a horizontally elongated center display 911 extending from the driver's seat 901 side to the passenger seat 902 side, the screen size and location of the center display 911 are arbitrary. The center display 911 can display information detected by various sensors (not shown). As a specific example, the center display 911 can display an image captured by an image sensor, a distance image to obstacles in front of or to the side of the vehicle measured by a ToF (Time of Flight) sensor, and the body temperature of a passenger detected by an infrared sensor. The center display 911 can be used to display, for example, at least one of safety-related information, operation-related information, a life log, health-related information, authentication / identification-related information, and entertainment-related information.

[0105] The safety-related information includes information such as whether or not the driver is dozing, whether or not the driver is looking away, whether or not a child is tampering with the vehicle, whether or not a seatbelt is fastened, and whether or not the driver has been abandoned. This information is detected, for example, by a sensor (not shown) placed on the rear side of the center display 911. The operation-related information is obtained by detecting gestures related to the driver's operations using a sensor. The detected gestures may include operations of various in-vehicle equipment. For example, operations of the air conditioning system, navigation system, AV (Audio / Visual) system, lighting system, etc. are detected. The life log includes life logs of all passengers. For example, the life log includes a record of each passenger's actions while in the vehicle. By acquiring and saving the life log, the condition of the passenger at the time of the accident can be confirmed. The health-related information is obtained by detecting the passenger's body temperature using a temperature sensor and estimating the passenger's health condition based on the detected body temperature. Alternatively, the passenger's face may be captured using an image sensor, and the passenger's health condition may be estimated based on the facial expression in the captured image. Furthermore, the system may have an automated voice conversation with the occupant and estimate the occupant's health condition based on the occupant's responses. The authentication / identification-related information includes a keyless entry function that uses a sensor to perform facial recognition, a function that automatically adjusts seat height and position using facial recognition, etc. The entertainment-related information includes a function that uses a sensor to detect operation information of an AV device by the occupant, and a function that recognizes the occupant's face using a sensor and provides content suitable for the occupant via the AV device.

[0106] The console display 912 can be used to display, for example, life log information. The console display 912 is disposed near the shift lever 908 on the center console 907 between the driver's seat 901 and the passenger seat 902. The console display 912 can also display information detected by various sensors (not shown). The console display 912 may also display an image of the vehicle's surroundings captured by an image sensor, or an image showing the distance to obstacles around the vehicle.

[0107] The head-up display 913 is virtually displayed behind the windshield 904 in front of the driver's seat 901. The head-up display 913 can be used to display, for example, at least one of safety-related information, operation-related information, a life log, health-related information, authentication / identification-related information, and entertainment-related information. Since the head-up display 913 is often virtually disposed in front of the driver's seat 901, it is suitable for displaying information directly related to the operation of the vehicle, such as the vehicle's speed and remaining fuel (battery) level.

[0108] The digital rearview mirror 914 can not only display the view behind the vehicle but also the status of passengers in the rear seats. Therefore, by placing a sensor (not shown) on the back side of the digital rearview mirror 914, it can be used to display life log information, for example.

[0109] The steering wheel display 915 is disposed near the center of the steering wheel 906 of the vehicle. The steering wheel display 915 can be used to display at least one of, for example, safety-related information, operation-related information, a life log, health-related information, authentication / identification-related information, and entertainment-related information. In particular, because the steering wheel display 915 is located near the driver's hands, it is suitable for displaying life log information such as the driver's body temperature, and for displaying information regarding the operation of AV equipment, air conditioning equipment, etc.

[0110] The rear entertainment display 916 is attached to the back side of the driver's seat 901 and the passenger seat 902 and is intended for viewing by rear seat passengers. The rear entertainment display 916 can be used to display, for example, at least one of safety-related information, operation-related information, a life log, health-related information, authentication / identification-related information, and entertainment-related information. In particular, since the rear entertainment display 916 is located directly in front of the rear seat passengers, information related to the rear seat passengers is displayed on the rear entertainment display 916. For example, the rear entertainment display 916 may display information related to the operation of an AV device or an air conditioning system, or may display the results of measurements such as the body temperature of the rear seat passengers taken with a temperature sensor (not shown).

[0111] <<5. Supplementary Information>> Although preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, the technical scope of the present disclosure is not limited to such examples. It is clear that a person skilled in the art of the present disclosure can conceive of various modified or altered examples within the scope of the technical idea described in the claims, and it is understood that these also naturally fall within the technical scope of the present disclosure.

[0112] Furthermore, the effects described herein are merely descriptive or exemplary and are not limiting. In other words, the technology according to the present disclosure may achieve other effects that will be apparent to those skilled in the art from the description of this specification, in addition to or in place of the above-described effects.

[0113] The present technology can also be configured as follows. (1) A light-emitting device comprising: a substrate; a pixel region configured by arranging a plurality of light-emitting elements in a matrix in a central portion of the substrate; a peripheral portion provided on the substrate so as to surround the pixel region; a protective film laminated on the pixel region and the peripheral portion; a groove provided in a portion of the protective film located above the peripheral portion and penetrating at least a portion of the protective film along a thickness direction of the protective film; and one or more light-shielding portions provided in the groove to block propagation of light from the light-emitting elements. (2) The light-emitting device according to (1), further comprising: an electrode provided in a region of the substrate not covered by the protective film and electrically connected to an external device, the groove being provided between the pixel region and the electrode. (3) The light-emitting device according to (1) or (2), wherein the light-shielding portion includes a light-absorbing material that absorbs light in the visible light range, a light-scattering material that scatters light at an interface with the protective film, or a light-reflecting material that reflects light at an interface with the protective film. (4) The light-emitting device according to (3) above, wherein the light-shielding portion includes a color filter or a black resin. (5) The light-emitting device according to (4) above, wherein the light-shielding portion includes a stack of a plurality of color filters of different colors. (6) The light-emitting device according to (3) above, wherein the light-shielding portion includes a transparent material or a porous material having a refractive index different from that of the protective film. (7) The light-emitting device according to (3) above, wherein the light-shielding portion includes a metal material. (8) The light-emitting device according to any one of (1) to (7) above, wherein the material of the light-shielding portion extends to a region of the upper surface of the protective film that is located above the peripheral portion. (9) The light-emitting device according to (8) above, wherein the material of the light-shielding portion further extends to a part of a region of the upper surface of the protective film that is located above the pixel region. (10) The light-emitting device according to (1) or (2) above, wherein the light-shielding portion is made of a void. (11) The light emitting device according to any one of (1) to (10) above, wherein the shape of the light-shielding portion in a cross section obtained by cutting the light emitting device along the film thickness direction of the substrate is trapezoidal or stepped. (12) The light emitting device according to any one of (1) to (11) above, wherein the groove penetrates the entire protective film along the film thickness direction of the protective film.(13) The light-emitting device according to (12), wherein the groove penetrates a part of the substrate along the film thickness direction of the substrate. (14) The light-emitting device according to any one of (1) to (11), wherein the light-emitting element is composed of a laminate of a first electrode, a light-emitting layer, and a second electrode, and a wiring electrically connected to the second electrode extends into the groove. (15) The light-emitting device according to (14), further comprising a contact electrode provided on the peripheral part of the substrate and electrically connected to the wiring, and wherein the groove is located closer to the center of the light-emitting device than the contact electrode. (16) The light-emitting device according to any one of (1) to (15), further comprising a glass substrate laminated above the protective film, and wherein the protective film and the glass substrate are sealed with a sealant provided on the outer periphery of the glass substrate. (17) The light-emitting device according to (16), wherein the groove is located below the sealant. (18) The light-emitting device according to (16) above, wherein the groove is located closer to the center of the light-emitting device than the sealing material. (19) The light-emitting device according to any one of (1) to (18) above, wherein, in a plan view of the light-emitting device seen from above, the light-shielding portion is provided along at least a part of the periphery of the pixel region. (20) The light-emitting device according to any one of (1) to (19) above, wherein, in a plan view of the light-emitting device seen from above, the light-shielding portion is linear, zigzag, or curved.

[0114] 100, 100a, 100b Display device 200 BP substrate 200a Pixel region 200b Peripheral portion 202 Wiring layer 210 Light-emitting element 212 Anode electrode 214 Organic EL film 216 Cathode electrode 216a Cathode wiring 220, 222, 224, 226, 228, 232, 234, 236 Protective film 230, 230b, 230g, 230r Color filter 240 On-chip lens 250 Resin 260 Sealing member 270 Glass substrate 280 Contact 300, 302 Electrode 310 Driver IC 312 FPC 320 ACF 400, 400a, 400b, 400c, 400d, 400e, 400f, 400g, 400h, 400i: light-shielding portions 402, 402a, 402b, 402c, 402d, 402e, 402f, 410, 412: grooves

Claims

1. A light-emitting device comprising: a substrate; a pixel region formed by arranging a plurality of light-emitting elements in a matrix at a central portion of the substrate; a peripheral portion provided on the substrate so as to surround the pixel region; a protective film laminated on the pixel region and the peripheral portion; a groove provided in a portion of the protective film located above the peripheral portion and penetrating at least a part of the protective film along the thickness direction of the protective film; and one or more light-shielding portions provided in the groove and blocking the propagation of light from the light-emitting elements.

2. The light-emitting device according to claim 1, further comprising an electrode provided in a region of the substrate not covered by the protective film and electrically connected to an external device, wherein the groove is provided between the pixel region and the electrode.

3. The light-emitting device according to claim 1, wherein the light-shielding portion includes a light-absorbing material that absorbs light in the visible light region, a light-scattering material that scatters light at an interface with the protective film, or a light-reflecting material that reflects light at an interface with the protective film.

4. The light-emitting device according to claim 3, wherein the light-shielding portion includes a color filter or a black resin.

5. The light-emitting device according to claim 4, wherein the light-shielding portion includes a stack of a plurality of color filters of different colors.

6. The light-emitting device according to claim 3, wherein the light-shielding portion includes a transparent material having a refractive index different from that of the protective film or a porous material.

7. The light-emitting device according to claim 3, wherein the light-shielding portion includes a metal material.

8. The light-emitting device according to claim 1, wherein the material of the light-shielding portion extends to a region located above the peripheral portion on the upper surface of the protective film.

9. The light-emitting device according to claim 8, wherein the material of the light-shielding portion further extends to a part of a region located above the pixel region on the upper surface of the protective film.

10. The light-emitting device according to claim 1, wherein the light-shielding portion is composed of voids.

11. The light-emitting device according to claim 1, wherein the shape of the light-shielding portion in a cross-section obtained by cutting the light-emitting device along the thickness direction of the substrate is trapezoidal or stepped.

12. The light-emitting device according to claim 1, wherein the groove penetrates the entire protective film along the thickness direction of the protective film.

13. The light-emitting device according to claim 12, wherein the groove penetrates a part of the substrate along the thickness direction of the substrate.

14. The light-emitting element is composed of a stack of a first electrode, a light-emitting layer, and a second electrode, and wiring electrically connected to the second electrode extends into the groove. The light-emitting device according to claim 1.

15. The light-emitting device according to claim 14, further comprising a contact electrode provided in the peripheral portion of the substrate to which the wiring is electrically connected, and the groove is located closer to the central portion side of the light-emitting device than the contact electrode.

16. The light-emitting device according to claim 1, further comprising a glass substrate laminated above the protective film, and the protective film and the glass substrate are sealed by a sealing material provided on the outer peripheral portion of the glass substrate.

17. The light-emitting device according to claim 16, wherein the groove is located below the sealing material.

18. The light-emitting device according to claim 16, wherein the groove is located closer to the central portion side of the light-emitting device than the sealing material.

19. The light-emitting device according to claim 1, wherein in a plan view of the light-emitting device seen from above, the light-shielding portion is provided along at least a part of the outer periphery of the pixel region.

20. The light-emitting device according to claim 1, wherein in a plan view of the light-emitting device seen from above, the light-shielding portion is linear, zigzag, or curved.

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