Organic light emitting device, display device, photoelectric conversion device, electronic device, lighting device, and moving object

Abstract

The present application relates to organic light emitting devices, display devices, photoelectric conversion devices, electronic devices, lighting devices, and moving objects. An organic light emitting device includes sub-pixels arranged on a substrate, the sub-pixels including a first sub-pixel, a second sub-pixel, and a third sub-pixel, the first sub-pixel, the second sub-pixel, and the third sub-pixel in turn including a lower electrode, an insulating layer covering end portions of the lower electrode, an organic layer, and an upper electrode, at least a portion of the organic layer being continuously arranged in at least two regions of a region between a position on a first lower electrode included in the first sub-pixel and a position on a second lower electrode included in the second sub-pixel, a region between the position on the second lower electrode and a position on a third lower electrode included in the third sub-pixel, and a region between the position on the third lower electrode and the position on the first lower electrode, the organic light emitting device satisfying formula (1) and formula (2) given below: λ1>λ2>λ3…(1) θ1<θ2<θ3…(2).

Description

TECHNICAL FIELD

[0001] The present application relates to organic light emitting devices, display devices, photoelectric conversion devices, electronic devices, lighting devices, and moving objects. BACKGROUND

[0002] An organic light emitting element includes a cathode, an anode, and an organic compound layer between the cathode and the anode, and functions as a light emitting device that emits light with recombination of an electron injected from the cathode and a hole injected from the anode. Because the organic light emitting element can constitute a light and flexible device, organic light emitting devices such as display devices including the organic light emitting element have been attracting attention in recent years.

[0003] The display device disclosed in Japanese Patent Application Publication No. 2020-155339 is a so-called "white light + CF" type display device in which white light is emitted from a light emitting layer, and the emitted white light passes through a color filter (CF), whereby one of red light, green light, and blue light is taken out. The display device disclosed in Japanese Patent Application Publication No. 2020-155339 has an optical interference structure in which a reflection layer is positioned below the light emitting layer, and an optical path length between a light emitting position in the light emitting layer and the reflection layer is optimal for each color. The optical interference structure can adjust the color of light before the light enters the CF, and can improve the color purity of light that has passed through the CF.

[0004] Japanese Patent Application Publication No. 2013-122835 discloses an organic light emitting element in which an insulating layer is formed to cover a peripheral portion of a lower electrode arranged for each pixel, and a light emitting region is defined by an opening in the insulating layer. Light generated from a light emitting layer is reflected at a wall surface of the opening in the insulating layer to improve light extraction efficiency. Further, Japanese Patent Application Publication No. 2013-122835 describes that light extraction efficiency can be improved by setting an inclination angle of the wall surface of the opening in the insulating layer with respect to the lower electrode to an acute angle.

[0005] Japanese Patent Application Publication No. 2013-122835 discloses a technique of reducing an inclination angle of an insulating layer that covers a peripheral portion of a lower electrode with respect to the lower electrode and reflecting light generated from a light emitting layer at a reflection layer, but the document does not disclose a technique of changing the inclination angle of the insulating layer for each light emitting element that constitutes a pixel of a display device. When the inclination angle of the insulating layer is uniformly reduced for all light emitting elements, a problem that current leakage between pixels is more likely to occur can arise.

[0006] In view of the above problem, the present application aims to suppress current leakage between pixels. SUMMARY

[0007] The present application provides an organic light emitting device including sub-pixels arranged on a substrate, the sub-pixels including a first sub-pixel, a second sub-pixel and a third sub-pixel, each of the first sub-pixel, the second sub-pixel and the third sub-pixel including, in order from a side close to the substrate, a lower electrode, an insulating layer covering an end portion of the lower electrode, an organic layer and an upper electrode, at least a portion of the organic layer being continuously arranged in at least two regions of a region between a position on a first lower electrode included in the first sub-pixel and a position on a second lower electrode included in the second sub-pixel, a region between the position on the second lower electrode and a position on a third lower electrode included in the third sub-pixel, and a region between the position on the third lower electrode and the position on the first lower electrode, wherein the insulating layer has at least one top portion in a region between a sub-pixel adjacent to the first sub-pixel and the first sub-pixel, between a sub-pixel adjacent to the second sub-pixel and the second sub-pixel, and between a sub-pixel adjacent to the third sub-pixel and the third sub-pixel, and assuming that a portion of the insulating layer between a first end portion thereof and a first top portion thereof is referred to as a first portion, the first end portion being given by an end portion of the insulating layer on the first lower electrode, the first top portion being given by the top portion closest to the first end portion, assuming that a portion of the insulating layer between a second end portion thereof and a second top portion thereof is referred to as a second portion, the second end portion being given by an end portion of the insulating layer on the second lower electrode, the second top portion being given by the top portion closest to the second end portion, and assuming that a portion of the insulating layer between a third end portion thereof and a third top portion thereof is referred to as a third portion, the third end portion being given by an end portion of the insulating layer on the third lower electrode, the third top portion being given by the top portion closest to the third end portion, the following expressions (1) and (2) are satisfied:

[0008] λ1>λ2>λ3…(1)

[0009] θ1<θ2<θ3…(2)

[0010] (in expression (1), λ1 represents a wavelength at which light emitted from the first sub-pixel has a maximum intensity, λ2 represents a wavelength at which light emitted from the second sub-pixel has a maximum intensity, and λ3 represents a wavelength at which light emitted from the third sub-pixel has a maximum intensity, in expression (2), θ1 represents an inclination angle of the first portion with respect to the substrate, θ2 represents an inclination angle of the second portion with respect to the substrate, and θ3 represents an inclination angle of the third portion with respect to the substrate).

[0011] Other features of the present application will become apparent from the following description of exemplary embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a plan view showing a configuration of an organic light emitting device according to the first embodiment.

[0013] Figure 2 is a cross-sectional view showing a configuration of an organic light emitting device according to the first embodiment.

[0014] Figure 3 is a partial enlarged view of Figure 2

[0015] Figure 4 is a cross-sectional view showing a configuration of an organic light emitting device according to the second embodiment.

[0016] Figure 5 is a cross-sectional view showing a configuration of an organic light emitting device according to the third embodiment.

[0017] Figure 6 is a cross-sectional view showing a configuration of an organic light emitting device according to the fourth embodiment.

[0018] Figure 7 is a partial enlarged view of Figure 6

[0019] Figure 8 is a cross-sectional view showing a configuration of an organic light emitting device according to the fifth embodiment.

[0020] Figure 9 is a schematic view showing an example of a display device.

[0021] Figure 10 is a schematic view showing an example of a camera device.

[0022] Figure 11A and Figure 11B are schematic views each showing another example of a display device.

[0023] Figure 12A and Figure 12B are schematic views each showing another example of a display device.

[0024] Figure 13A and Figure 13B are schematic views each showing an example of an illumination device.

[0025] Figure 14A and Figure 14B are schematic views each showing an application example of a display device. DETAILED DESCRIPTION

[0026] ​​Details of the organic light emitting apparatus according to the embodiments will be described below with reference to the accompanying drawings. Any of the following embodiments represents an example of the present application, and the values, shapes, materials, components, and forms of connection and arrangement of components in the embodiments are not intended to limit the scope of the present application. Although various features are mentioned in the embodiments, all of these features are not essential in the present application, and these features can be optionally combined with each other. In the drawings, the same or similar components are designated by the same reference numerals, and overlapping descriptions of these components are omitted.

[0027] In the present specification, in order to facilitate the explanation of positional relationships between components with reference to the drawings, words such as "upper" and "lower" indicating arrangement positions are used. The positional relationships between components change as appropriate depending on the direction in which the components are viewed. Therefore, the expressions indicating the positional relationships are not limited to the words used in the present specification, and can be appropriately replaced with other words depending on the situation. Furthermore, the words "upper" and "lower" are not to be interpreted as meaning that one component is positioned directly above or directly below the other component, and the state in which the two components are in direct contact with each other. For example, the expression "an electrode B on an insulating layer A" does not require that the electrode B be formed on the insulating layer A in direct contact with the insulating layer A, and does not exclude the presence of other components between the insulating layer A and the electrode B.

[0028] In the present specification, the expression "substantially parallel" means a state in which two straight lines or two planes are arranged so as to form an angle of 15° or more and 15° or less therebetween. In the present specification, the expression "continuously arranged between A and B" means that the respective components are continuously arranged from A to B without interruption. In the present specification, the word "height" indicates a distance measured upward from the upper surface (first surface) of the substrate 1. A portion parallel to the upper surface (first surface) of the substrate 1 can be specified, and the "height" can be defined based on the specified reference.

[0029] First Embodiment

[0030] Details of the organic light emitting apparatus according to the first embodiment will be described below with reference to Figures 1 to 3 The organic light emitting apparatus according to the first embodiment will be described below with reference to

[0031] Overall configuration of the organic light emitting apparatus

[0032] Figure 1 is a plan view showing the configuration of the organic light emitting apparatus 100 according to the first embodiment. The organic light emitting apparatus 100 includes a display region 110 at which a plurality of pixels PX are arranged in a two-dimensional array on a substrate 1 (on-substrate), and a peripheral circuit 120. The peripheral circuit 120 is a circuit for causing image display in the display region 110, and can include a signal line driver circuit 121 (a signal output circuit) and a signal line driver circuit 122 (a vertical scanning circuit) as drivers for causing image display.

[0033] Each pixel PX includes a plurality of sub-pixels SP. In the present embodiment, each pixel PX includes three kinds of sub-pixels SP, i.e., a first sub-pixel SPR that emits light of a first color, a second sub-pixel SPG that emits light of a second color, and a third sub-pixel SPB that emits light of a third color. Here, the first color, the second color, and the third color are assumed to be, for example, red, green, and blue, respectively. The configuration of the pixel PX described above is exemplary, and the pixel configuration is not limited to the pixel configuration described above. In another example, each pixel PX can include a fourth sub-pixel SPW that emits light of a fourth color in addition to the first sub-pixel SPR, the second sub-pixel SPG, and the third sub-pixel SPB. The fourth color can be, for example, white or yellow. In addition, the present embodiment represents an example in which the sub-pixels SP are configured in a delta array, but the present application is not limited to this example. The sub-pixels can be configured in a stripe array, a square array, or a Bayer array.

[0034] Configuration of light emitting element

[0035] Figure 2 is a schematic cross-sectional view taken along the line segment II-II in Figure 1 Each sub-pixel SP includes a light emitting element 10 configured on the upper surface (first surface) of the substrate 1. Figure 2 Three sub-pixels SP belonging to one of the pixels PX included in the organic light emitting apparatus 100 are shown. The first sub-pixel SPR includes a first light emitting element 10R, the second sub-pixel SPG includes a second light emitting element 10G, and the third sub-pixel SPB includes a third light emitting element 10B. The first light emitting element 10R is a light emitting element that emits light of a first color, the second light emitting element 10G is a light emitting element that emits light of a second color, and the third light emitting element 10B is a light emitting element that emits light of a third color. In the present specification, when a particular light emitting element among the light emitting elements 10 is referred to, the relevant light emitting element is indicated by adding a suffix to the reference sign, such as the light emitting element “10R”. When a light emitting element is referred to without specifying the kind of the light emitting element, the light emitting element is simply indicated by the light emitting element “10”. The same applies to other components.

[0036] Each light emitting element 10 includes, in order from the upper surface side of the substrate 1 (from the side close to the substrate), a lower electrode 2, an insulating layer 3 that covers the end portion of the lower electrode 2, an organic layer 4 including a light emitting layer, and an upper electrode 5. The organic light emitting apparatus 100 according to the present embodiment is a top emission device in which light is taken out from the upper electrode 5. The organic light emitting apparatus 100 further includes a protective layer 6 configured to cover the upper electrode 5, a first planarization layer 8, a second planarization layer 9, and a color filter layer 70.

[0037] The color filter layer 70 includes a first color filter 7R, a second color filter 7G, and a third color filter 7B. The first color filter 7R is a color filter that allows a first color of light to pass through, the second color filter 7G is a color filter that allows a second color of light to pass through, and the third color filter 7B is a color filter that allows a third color of light to pass through. These color filters 7 are arranged in a one-to-one relationship with the light emitting elements 10, and are respectively configured in correspondence with the light emitting regions of the light emitting elements 10. In Figure 1 In a plan view, the color filters 7 included in each sub-pixel SP (light emitting element 10) are indicated by solid lines. Further, in Figure 1 In a plan view, the color filters 7 included in each sub-pixel SP (light emitting element 10) are indicated by solid lines. Further, in Figure 1 In a plan view, the color filters 7 included in each sub-pixel SP (light emitting element 10) are indicated by solid lines. Further, in Figure 1 As shown in

[0038] In the present embodiment, the organic layer 4 included in each light emitting element 10 emits white light. The color filters 7R, 7G, and 7B each separate one of the RGB lights from the white light emitted from the organic layer 4 by allowing the respective light to selectively pass through, and then outputs the separated light to the outside. At least a part of the color filters included in the color filter layer 70 can be a color conversion layer that absorbs the light emitted from the organic layer and outputs the light after conversion into another color. The color conversion layer can include quantum dots (QD). The color filter layer 70 can include four or more kinds of color filters. In addition, the light emitted from the organic layer 4 can not necessarily be white light.

[0039] The substrate 1 is a plate-like member having a first surface. Various components are stacked on the first surface of the substrate 1, thereby forming the organic light emitting device 100. The substrate 1 can be a semiconductor substrate such as a silicon substrate, or can be an insulator substrate made of, for example, glass, quartz, or resin. Further, the substrate 1 can have flexibility.

[0040] A drive circuit layer (not shown) including transistors electrically connected to the lower electrode 2 can be formed on the substrate 1. In this embodiment, the drive circuit formed in the drive circuit layer is an active-matrix type pixel drive circuit. Therefore, it can be said that the organic light emitting device 100 is an active matrix display device. The drive circuit layer can be formed by being laminated on the substrate 1, or a part of the drive circuit layer can be formed directly in the substrate 1 by a semiconductor process. The drive circuit layer can include transistors, wiring layers, and insulators between the wiring layers. The insulator is, for example, an interlayer insulating layer made of an inorganic material such as silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiON), or the like, or an organic material such as polyimide, polyacrylate, or the like. The interlayer insulating layer has a flat upper surface, and is generally called a planarization layer for the purpose of reducing unevenness of a surface used as an underground in a step of forming the lower electrode 2. When the substrate 1 includes the drive circuit layer, the term "substrate" can also be considered to include the drive circuit layer. When the term "substrate" is also considered to include the drive circuit layer, the upper surface of the uppermost interlayer insulating layer in the drive circuit layer can be considered to be the first surface. In this embodiment, because the lower electrode 2 is formed on the first surface, the lower surface of the lower electrode 2 coincides with the first surface. Therefore, the lower surface of the lower electrode 2 can be considered to be the first surface.

[0041] The lower electrode 2 is an anode (positive electrode), and is configured to be electrically isolated by the insulating layer 3 for each light emitting element 10. In other words, the lower electrode 2 is configured to be electrically isolated for each sub-pixel. It can also be said that the light emitting element 10 independently includes the lower electrode 2 in a one-to-one relationship. The lower electrode 2 is also called a pixel electrode or an individual electrode. In this embodiment, the lower electrode 2 is used not only as an anode but also as a reflection layer that reflects light generated from the organic layer 4 and improves the light emitting efficiency of the light emitting element 10. In order to enhance the function as a reflection layer, the lower electrode 2 can be made of a metal material having a reflectance of 80% or more for the light emitting wavelength of the organic layer 4. Here, the light emitting wavelength of the organic layer 4 is the wavelength at which the light intensity is the greatest from the light emitted from the organic layer 4. For example, a metal such as Al (aluminum) or Ag (silver), or an alloy obtained by adding, for example, Si, Cu, Ni, or Nd to any of the above metals can be used as the material of the lower electrode 2. Alternatively, a metal material having a reflectance of 80% or more for light in the visible light range can be used as the material of the lower electrode 2. The lower electrode 2 can have a layered structure including a barrier layer. A metal such as Ti, W, Mo, or Au, or an alloy of any of these metals can be used as the material of the barrier layer. The barrier layer can be a metal layer on the upper surface of the lower electrode 2.

[0042] An insulating layer 3 is disposed on both the lower electrode 2 and the substrate 1, and covers the end of the lower electrode 2. The insulating layer 3 may include a portion located on the lower electrode 2 and a portion located at the same height as the lower electrode 2. The portion of the insulating layer 3 disposed on the lower electrode 2 is located between the lower electrode 2 and the organic layer 4. The lower electrode 2 includes a first region covered by the insulating layer 3 and a second region not covered by the insulating layer 3 but covered by the organic layer. Specifically, the first region does not contact the organic layer 4, and the second region does contact the organic layer 4. The second region is referred to as an opening in the insulating layer 3, or simply an opening. This is because, in a plan view viewed from above, the second region can be considered as a recess formed to be surrounded by the insulating layer 3. The second region is the light-emitting region of each light-emitting element 10. Therefore, the shape of the light-emitting region in a plan view viewed from above can be the shape defined by the insulating layer 3. The shape of the insulating layer 3 is not limited to... Figure 2 The shape shown is acceptable as long as the insulating layer 3 serves to electrically isolate the lower electrode 2 of the light-emitting element 10. The insulating layer 3 is also called a pixel isolation film, separator, or dam.

[0043] The insulating layer 3 has a sloping portion on its upper side. Alternatively, the upper side can be described as the side opposite to the substrate 1 or the side the same as the organic layer 4. Here, it is assumed that one light-emitting element 10, including a lower electrode 2 whose end is covered by the insulating layer 3, is light-emitting element A, and another light-emitting element 10 adjacent to light-emitting element A is light-emitting element B. In this case, the insulating layer 3 has at least one top between the lower electrode 2 contained in light-emitting element A and the lower electrode 2 contained in light-emitting element B. The top refers to the portion where, when viewed in a cross-sectional view including light-emitting elements A and B, and following its upper surface from the lower electrode 2 of light-emitting element A, the slope of the insulating layer 3 changes from an upward slope to a downward slope. The top may include a flat portion. For each light-emitting element 10, the insulating layer 3 has at least one top. Thus, the insulating layer 3 has at least one top between the first light-emitting element 10R and another adjacent light-emitting element 10, between the second light-emitting element 10G and another adjacent light-emitting element 10, and between the third light-emitting element 10B and another adjacent light-emitting element 10. The first light-emitting element 10R, the second light-emitting element 10G, and the third light-emitting element 10B can be read as the first sub-pixel SPR, the second sub-pixel SPG, and the third sub-pixel SPB, respectively. The insulating layer 3 can be continuously disposed from the lower electrode 2 included in the light-emitting element A to the lower electrode 2 included in the light-emitting element B, or it can be separated between the lower electrode 2 included in the light-emitting element A and the lower electrode 2 included in the light-emitting element B. The inclined portion of the insulating layer 3 will be described later.

[0044] The insulating layer 3 can be formed by, for example, a chemical vapor deposition (CVD) method or a physical vapor deposition (PVD) method. The insulating layer 3 can be made of, for example, silicon nitride (SiNx), silicon oxide (SiOx), or silicon oxynitride (SiON). The insulating layer 3 can be formed of a laminated film of the above-described materials. The inclination angle of the inclined portion of the insulating layer 3 can be controlled depending on the conditions of anisotropic etching or isotropic etching. Alternatively, the inclination angle of the insulating layer 3 can be controlled by controlling the inclination angle of a layer located below the insulating layer 3. The upper surface of the insulating layer 3 can have a concave-convex shape made by a process such as etching or by laminating an additional layer.

[0045] The organic layer 4 is located between the lower electrode 2 and the upper electrode 5. The organic layer 4 is continuously disposed on both the lower electrode 2 and the insulating layer 3 in a form common to a plurality of light emitting elements 10. It can be said that the plurality of light emitting elements 10 share a single organic layer 4. The organic layer 4 can be disposed in a form common to a plurality of sub-pixels SP constituting one pixel PX. The organic layer 4 can be separated between adjacent pixels PX, or can be disposed in a form common to a plurality of pixels PX. The organic layer 4 can be integrally formed throughout the entire display region 110 for the organic light emitting device 100 to display an image. When the organic layer 4 is composed of a plurality of layers, at least a part of the layers can be continuously disposed above the plurality of light emitting elements 10. When the sub-pixel SP has a very small size, it is particularly effective to dispose the organic layer 4 in a form common to a plurality of sub-pixels SP.

[0046] Now, assume that the pixels PX included in the organic light emitting device 100 each include a first sub-pixel SPR having a first lower electrode 2R and a second sub-pixel SPG having a second lower electrode 2G. In this case, at least a part of the organic layer 4 can be continuously disposed between a position on the first lower electrode 2R and a position on the second lower electrode 2G. Here, the expression "continuously disposed" means that the organic layer is continuously disposed without interruption in between. Further, the expression "continuously disposed between a position on the first lower electrode 2R and a position on the second lower electrode 2G" means that the organic layer 4 is continuously disposed without interruption from the position on the first lower electrode 2R to the position on the second lower electrode 2G.

[0047] Further, it is assumed that each pixel PX included in the organic light emitting device 100 includes a first sub-pixel SPR having the first lower electrode 2R, a second sub-pixel SPG having the second lower electrode 2G, and a third sub-pixel SPB having the third lower electrode 2B. In this case, at least a portion of the organic layer 4 can satisfy the following aspects. The organic layer 4 can be continuously disposed in at least two of the regions between the position on the first lower electrode 2R and the position on the second lower electrode 2G, between the position on the second lower electrode 2G and the position on the third lower electrode 2B, and between the position on the third lower electrode 2B and the position on the first lower electrode 2R. Alternatively, the organic layer 4 can be continuously disposed in all of the regions between the position on the first lower electrode 2R and the position on the second lower electrode 2G, between the position on the second lower electrode 2G and the position on the third lower electrode 2B, and between the position on the third lower electrode 2B and the position on the first lower electrode 2R.

[0048] The organic layer 4 includes a light emitting layer configured to emit light by recombination of holes provided from the lower electrode 2 and electrons provided from the upper electrode 5. The organic layer 4 can include a hole transport layer, a light emitting layer, and an electron transport layer. For the organic layer 4, an appropriate material can be selected from the viewpoint of light emitting efficiency, driving life, and optical interference. The hole transport layer can function as an electron blocking layer or a hole injection layer, or can be formed into a laminate structure of, for example, a hole injection layer, a hole transport layer, and an electron blocking layer. The light emitting layer can be formed into a laminate structure of light emitting layers configured to emit light of different colors, or can be a mixed layer prepared by mixing light emitting dopants that emit light of different colors. The light emitting layer can contain a first color light emitting material that emits light of a first color, a second color light emitting material that emits light of a second color, and a third color light emitting material that emits light of a third color. The light emitting layer can be configured to produce white light by mixing of the respective light emitting colors. The first color, the second color, and the third color can be, for example, red, green, and blue, respectively. The light emitting layer can contain light emitting materials in complementary color relationship, such as a blue light emitting material and a yellow light emitting material. The electron transport layer can function as a hole blocking layer or an electron injection layer, or can be formed into a laminate structure of, for example, an electron injection layer, an electron transport layer, and a hole blocking layer.

[0049] The organic layer 4 can include a plurality of light emitting layers and an intermediate layer between functional layers. The organic light emitting device 100 can be a light emitting device of a tandem structure in which the intermediate layer functions as a charge generation layer. The tandem structure can include a charge transport layer, such as a hole transport layer or an electron transport layer, between the charge generation layer and the light emitting layer.

[0050] The charge generation layer is a layer including an electron-donating material and an electron-accepting material and generating electric charges. The electron-donating material and the electron-accepting material are a material that donates an electron and a material that accepts the electron, respectively. Thus, because positive charges and negative charges are generated in the charge generation layer, the positive charges or the negative charges can be supplied to layers located above and below the charge generation layer. The electron-donating material can be, for example, an alkali metal such as lithium or cesium. Alternatively, the electron-donating material can be, for example, lithium fluoride, a lithium complex, cesium carbonate, or a cesium complex. In the latter case, the electron-donating ability can be exerted by mixing a reducing material such as aluminum, magnesium, or calcium together. The electron-accepting material can be, for example, an inorganic material such as molybdenum oxide or an organic material such as [dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile] (HAT-CN). The electron-accepting material and the electron-donating material can be mixed with each other or stacked one on top of the other.

[0051] The upper electrode 5 is a cathode (negative electrode) and is disposed on the organic layer 4. The upper electrode 5 is continuously formed over the plurality of light emitting elements 10 and is shared by the light emitting elements 10. Like the organic layer 4, the upper electrode 5 can be integrally formed over the entire display region 110 in which the organic light emitting device 100 displays an image. The upper electrode 5 can be an electrode that transmits at least a portion of light that has reached the lower surface of the upper electrode 5. The upper electrode 5 can function as a semi-transmissive and semi-reflective layer having a property of transmitting a portion of light and reflecting the other portion of light (i.e., a semi-transmissive and semi-reflective property). The upper electrode 5 can be made of, for example, a metal such as magnesium or silver, an alloy in which magnesium or silver is a main component, or an alloy material containing an alkali metal or an alkaline earth metal. Alternatively, an oxide conductor such as ITO, IZO, ZnO, AZO, or IGZO can be used as the upper electrode 5. The upper electrode 5 can be formed in a laminate structure as long as an appropriate transmittance is obtained.

[0052] The protective layer 6 is continuously formed on the upper electrode 5 over the plurality of light emitting elements 10 and is shared by the light emitting elements 10. The protective layer 6 can contain an inorganic material that has a light-transmitting property and has a low permeability to oxygen and moisture from the outside. The protective layer 6 is also referred to as, for example, a moisture-proof layer or a sealing layer. The protective layer 6 can contain, for example, silicon nitride (SiNx), silicon oxynitride (such as SiON), aluminum oxide (such as Al2O3), silicon oxide (SiO x) or titanium oxide (such as TiO2). Silicon nitride and silicon oxynitride can be formed by, for example, a CVD method or a sputtering method. On the other hand, aluminum oxide, silicon oxide, and titanium oxide can be formed by an atomic layer deposition (ALD) method. The material combination and the manufacturing method of the protective layer 6 are not limited to the above-described examples, and the protective layer 6 can be manufactured in consideration of the thickness of the layer to be formed, the time required for forming the protective layer, and the like. The protective layer 6 can be formed in a single-layer structure or a laminated structure, as long as the light that has passed through the upper electrode 5 is transmitted and sufficient moisture-proof performance is ensured.

[0053] A color filter layer 70 is formed on the protective layer 6. As described above, the color filter layer 70 can include a first color filter 7R, a second color filter 7G, and a third color filter 7B. The color filters 7 included in the color filter layer 70 can be in contact with each other without a gap, similarly to the first color filter 7R and the second color filter 7G shown in the drawing. Figure 2

[0054] A first planarization layer 8 is formed between the protective layer 6 and the color filter layer 70, and a second planarization layer 9 is formed on the color filter layer 70. The first planarization layer 8 and the second planarization layer 9 are made of, for example, a resin.

[0055] Sloped portion of insulating layer

[0056] A sloped portion of the insulating layer 3 will be described below. As Figure 2 indicated in the drawing, the insulating layer 3 included in the organic light emitting device 100 according to the present embodiment has a sloped portion, and the inclination angle of the sloped portion is different for each light emitting element 10.

[0057] As described above, the insulating layer 3 that covers the end portion of the lower electrode 2 of one light emitting element 10 (light emitting element A) has at least one top portion between the lower electrode 2 of the light emitting element 10 (light emitting element A) and the lower electrode 2 of another adjacent light emitting element 10 (light emitting element B).

[0058] As Figure 2 ​As shown, the insulating layer 3 covering the end portion of the first lower electrode 2R included in the first sub-pixel SPR has a first end portion 31R given by the end portion of the insulating layer 3 on the first lower electrode 2R (first lower electrode). The corresponding insulating layer 3 has two top portions between the first sub-pixel SPR and the adjacent second sub-pixel SPG, and the top portion closest to the first sub-pixel SPR among the two top portions is referred to as a first top portion 32R. In this case, a portion between the first end portion 31R and the first top portion 32R is referred to as a first portion 33R. The first portion 33R includes an inclined portion inclined in such a manner that a normal direction of the inclined portion extends toward an upper side of a first light emitting region where the first lower electrode 2R and the organic layer 4 come into contact with each other.

[0059] Likewise, as shown in FIG. 6, the insulating layer 3 covering the end portion of the second lower electrode 2G included in the second sub-pixel SPG has a second end portion 31G given by the end portion of the insulating layer 3 on the second lower electrode 2G (second lower electrode). The corresponding insulating layer 3 has two top portions between the second sub-pixel SPG and the adjacent first sub-pixel SPR, and the top portion closest to the second sub-pixel SPG among the two top portions is referred to as a second top portion 32G. In this case, a portion between the second end portion 31G and the second top portion 32G is referred to as a second portion 33G. The second portion 33G includes an inclined portion inclined in such a manner that a normal direction of the inclined portion extends toward an upper side of a second light emitting region where the second lower electrode 2G and the organic layer 4 come into contact with each other. Figure 2 Likewise, as shown in FIG. 7, the insulating layer 3 covering the end portion of the third lower electrode 2B included in the third sub-pixel SPB has a third end portion 31B given by the end portion of the insulating layer 3 on the third lower electrode 2B (third lower electrode). The corresponding insulating layer 3 has two top portions between the third sub-pixel SPB and the adjacent second sub-pixel SPG, and the top portion closest to the third sub-pixel SPB among the two top portions is referred to as a third top portion 32B. In this case, a portion between the third end portion 31B and the third top portion 32B is referred to as a third portion 33B. The third portion 33B includes an inclined portion inclined in such a manner that a normal direction of the inclined portion extends toward an upper side of a third light emitting region where the third lower electrode 2B and the organic layer 4 come into contact with each other.

[0060] Figure 2 Likewise, as shown in FIG. 7, the insulating layer 3 covering the end portion of the third lower electrode 2B included in the third sub-pixel SPB has a third end portion 31B given by the end portion of the insulating layer 3 on the third lower electrode 2B (third lower electrode). The corresponding insulating layer 3 has two top portions between the third sub-pixel SPB and the adjacent second sub-pixel SPG, and the top portion closest to the third sub-pixel SPB among the two top portions is referred to as a third top portion 32B. In this case, a portion between the third end portion 31B and the third top portion 32B is referred to as a third portion 33B. The third portion 33B includes an inclined portion inclined in such a manner that a normal direction of the inclined portion extends toward an upper side of a third light emitting region where the third lower electrode 2B and the organic layer 4 come into contact with each other.

[0061] Improvement of light extraction efficiency with inclined portion of insulating layer

[0062] ​As described above, the light emitted from the organic layer 4 is output to the outside after passing through the upper electrode 5 and the color filter 7. Here, the organic layer 4 emits not only the light LI propagating upward but also light L2 propagating in a direction including a direction parallel to the first surface of the substrate 1, that is, propagating in the lateral direction. If the light L2 propagating in the lateral direction is left as it is, the light L2 cannot be extracted from the light emitting element 10 to the outside. However, by reflecting the light L2 at the inclined portion of the insulating layer 3 and changing the propagation direction of the light L2 so that the light propagates upward, it is possible to extract the light L2 from the light emitting element 10 to the outside. Therefore, it is considered that it is possible to improve the light extraction efficiency of the organic light emitting device 100. From the viewpoint of the light extraction efficiency, it is preferable that the light L2 be totally reflected at the inclined portion of the insulating layer 3.

[0063] Now, a case where the light L2 propagating in the lateral direction from the organic layer 4 is totally reflected at the inclined portion of the insulating layer 3 will be discussed. For simplicity, it is assumed that the light L2 propagates in parallel to the first surface of the substrate 1. It is further assumed for simplicity that the inclined portion of the insulating layer 3 has a bevel shape defining a flat bevel surface.

[0064] Here, in order to totally reflect the light at the inclined portion of the insulating layer 3, it is necessary to set the incident angle θ i [°] of the light incident to the inclined portion to the critical angle θ c [°] or more. In this case, assuming that the angle formed between the bevel surface of the inclined portion and the first surface is an inclination angle θ j [°], the incident angle θ i [°] satisfies θ i = 90° - θ j . Therefore, by setting the inclination angle θ j to a certain value or less (that is, (90° - θ c ) or less), the incident angle θ i becomes the critical angle θ c or more, and it is possible to more easily totally reflect the light L2 propagating in the lateral direction from the organic layer 4. It is considered that by setting the inclination angle θ j to a smaller value, it is possible to further improve the light extraction efficiency of the organic light emitting device 100. The above discussion is made for the case where the light is totally reflected at the inclined portion of the insulating layer 3, but the present application is not limited to this case. In other words, by setting the inclination angle θ j to a certain value or less (that is, (90° - θ c ) or less), it is possible to more easily reflect the light L2 propagating in the lateral direction from the organic layer 4.

[0065] However, if the inclination angle θ jIf the inclination angle θ of the inclined portion of the insulating layer 3 is set too small, the following drawbacks arise. The insulating layer 3 is configured to cover the end portion of the lower electrode 2, and functions to reduce the thickness of the organic layer 4 disposed on the lower electrode 2. This brings about the effect of suppressing current leakage between adjacent sub-pixels SP. However, if the inclination angle θ of the inclined portion of the insulating layer 3 is set too small j If set too small, the above effect weakens, and current leakage between adjacent sub-pixels SP is more likely to occur. If current leakage between adjacent sub-pixels SP occurs, unintended light emission results, color purity decreases, and the color gamut narrows.

[0066] Achieving both suppression of current leakage and improvement of light extraction efficiency

[0067] As a result of intensive studies based on the above discussion, the inventors found that by adjusting the inclination angle θ of the inclined portion of the insulating layer 3 for each sub-pixel SP j , it is possible to improve light extraction efficiency while suppressing current leakage between adjacent sub-pixels SP. This will be described in detail below.

[0068] The organic light emitting device 100 according to the present embodiment includes a plurality of sub-pixels SP or a plurality of light emitting elements 10, and the color of light taken out to the outside is different for each sub-pixel SP. In the present embodiment, the organic light emitting device 100 includes a color filter layer 70, and outputs light of a specific color by causing white light emitted from the organic layer 4 to pass through the color filter 7. Because the color filter 7 absorbs light of other colors than the color of light taken out to the outside after passing through the color filter 7, there is no impact on light extraction efficiency even if light of other colors than the color of light taken out to the outside does not reach the color filter 7. Conversely, if a larger amount of light of the color taken out to the outside can be guided to reach the color filter 7 and can be output to the outside, light extraction efficiency improves. When the color filter 7 is a color conversion layer, if a larger amount of light converted to the desired color can be guided to reach the color filter 7 and can be output to the outside, light extraction efficiency improves.

[0069] The refractive index of a substance differs depending on the wavelength of light. In general, when a substance is transparent in the visible light range, the substance exhibits normal dispersion in which the refractive index has a larger value at a shorter wavelength of light in the visible light range. The refractive index n1 of the organic layer 4 and the refractive index n2 of the insulating layer 3 will be discussed below to study total reflection at the inclined portion of the insulating layer 3. When the insulating layer 3 is made of a plurality of layers, the refractive index n2 is given by the refractive index of the uppermost layer among the layers that form the insulating layer 3. When the organic layer 4 is made of a plurality of layers, the refractive index n1 is given by the refractive index of the lowermost layer among the layers that form the organic layer 4. The refractive index can be measured by spectroscopic ellipsometry with a target material in a thin film form. A sample for measuring the refractive index can be prepared by forming a thin film of the target material on a Si substrate.

[0070] The materials generally used as the organic layer 4 and the insulating layer 3 that constitute the organic light emitting device 100 generally exhibit the above-described normal dispersion in the visible light range. Therefore, assuming that the wavelength of light of the first color is λ1 [nm], the wavelength of light of the second color is λ2 [nm], and λ1 > λ2 is satisfied, the following Equations (5) and (6) hold. The wavelength λ1 of light of the first color refers to the wavelength at which light of the first color has the maximum intensity. The wavelength λ2 of light of the second color refers to the wavelength at which light of the second color has the maximum intensity. The wavelength λ3 of light of the third color described later refers to the wavelength at which light of the third color has the maximum intensity. λ1 can be 590 nm or more and 770 nm or less, λ1 can be 500 nm or more and 580 nm or less, and λ3 can be 430 nm or more and 490 nm or less.

[0071] n1@λ1 > n1@λ2... (5)

[0072] n2@λ1 > n2@λ2... (6)

[0073] In Equation (5), n1@λ1 denotes the refractive index of the organic layer 4 at the wavelength λ1, and n1@λ2 denotes the refractive index of the organic layer 4 at the wavelength λ2. In Equation (6), n2@λ1 denotes the refractive index of the insulating layer 3 at the wavelength λ1, and n2@λ2 denotes the refractive index of the insulating layer 3 at the wavelength λ2. The above aspects apply equally to the following description.

[0074] The critical angle refers to the minimum incident angle at which total reflection occurs when light propagates from a region having a larger refractive index to a region having a smaller refractive index. The critical angle θc is given by the following Equation (7). c The critical angle θc is determined in accordance with the refractive index of the material located on the incident side and the refractive index of the material located on the exit side. The critical angle θc when light enters the insulating layer 3 from the organic layer 4 is expressed by the following Equation (7). c .

[0075] The critical angle θc is determined in accordance with the refractive index of the material located on the incident side and the refractive index of the material located on the exit side. The critical angle θc when light enters the insulating layer 3 from the organic layer 4 is expressed by the following Equation (7). c = arcsin(n2 / n1)... (7)

[0076] In the case where n1 < n2 in formula (7), total reflection does not occur regardless of the incident angle. In the present embodiment, the following formulas (8) and (9) further hold. Preferably, n1 > n2 is satisfied throughout the entire visible light range (400 nm or more and 700 nm or less).

[0077] n1@λ1 > n2@λ1... (8)

[0078] n1@λ2 > n2@λ2... (9)

[0079] Further, the following formula (10) holds. Formula (10) means that the wavelength dependence of the refractive index of the insulating layer 3 is smaller than the wavelength dependence of the refractive index of the organic layer 4. Such a characteristic is a general tendency of materials generally used as the organic layer 4 and the insulating layer 3 constituting the organic light emitting device 100.

[0080] (n1@λ1) / (n2@λ1) < (n1@λ2) / (n2@λ2)... (10)

[0081] The above discussion can be summarized as follows. As seen from formula (7), the critical angle is determined depending on the refractive index n1 of the organic layer 4 and the refractive index n2 of the insulating layer 3. The refractive index n1 of the organic layer 4 and the refractive index n2 of the insulating layer 3 are different depending on the wavelength, and the critical angle θ c has a larger value at a longer wavelength. Thus, the following formula (11) holds. In formula (11), θ c @λ1 represents the critical angle at a wavelength λ1, and θ c @λ2 represents the critical angle at a wavelength λ2.

[0082] θ c @λ1 > θ c @λ2... (11)

[0083] As described above, by setting the inclination angle θ j to a certain value or less (i.e., (90° - θ c below), the incident angle θ i becomes the critical angle θ c above, it is possible to more easily reflect or totally reflect the light L2 propagating in the lateral direction from the organic layer 4. As seen from formula (11), because the critical angle θ c @λ1 at the wavelength λ1 is larger than the critical angle θ c @λ2 at the wavelength λ2, the upper limit of the inclination angle θ j is smaller at the wavelength λ1 than at the wavelength λ2. Thus, the inclination angle θ jThe upper limit is smaller for sub-pixels SP from which light having a longer wavelength is to be extracted to the outside. In other words, the inclined portion of the insulating layer 3 does not need to be as gentle for sub-pixels SP from which light having a shorter wavelength is to be extracted to the outside. The inventors completed the present application based on the above-described concept.

[0084] Relationship between the inclination angles in the sub-pixels SP

[0085] The inclination angles of the inclined portion of the insulating layer 3 in each sub-pixel SP included in the organic light-emitting device 100 according to the present embodiment, which is designed based on the above-described technical concept, will be described below. Each pixel PX includes three kinds of sub-pixels SP, i.e., a first sub-pixel SPR that emits light of a first color, a second sub-pixel SPG that emits light of a second color, and a third sub-pixel SPB that emits light of a third color. Here, it is assumed that the light of the first color has a wavelength λ1 at a maximum intensity, the light of the second color has a wavelength λ2 at a maximum intensity, and the light of the third color has a wavelength λ3 at a maximum intensity, and that the following formulae (3) and (1) are satisfied.

[0086] λ1 > λ2 … (3)

[0087] λ1 > λ2 > λ3 … (1)

[0088] As described above, the first color, the second color, and the third color can be red, green, and blue, respectively. Therefore, λ1 can be 610 nm, λ2 can be 515 nm, and λ3 can be 450 nm.

[0089] As described above, the inclination angle of the inclined portion of the insulating layer 3 does not need to be as small for sub-pixels SP from which light having a shorter wavelength is to be extracted to the outside. Therefore, in order to suppress current leakage between adjacent sub-pixels SP, the inclination angle of the inclined portion of the insulating layer 3 in a sub-pixel SP from which light having a shorter wavelength is to be extracted to the outside is designed to be larger than the inclination angle of the inclined portion of the insulating layer 3 in a sub-pixel SP from which light having a longer wavelength is to be extracted to the outside. It is assumed that the inclination angle of the first portion 33R of the insulating layer 3 in the first sub-pixel SPR is θ1, the inclination angle of the second portion 33G of the insulating layer 3 in the second sub-pixel SPG is θ2, the inclination angle of the third portion 33B of the insulating layer 3 in the third sub-pixel SPB is θ3, and that the following formulae (4) and (2) are satisfied. The inclination angles θ1, θ2, and θ3 are inclination angles with respect to the upper surface (first surface) of the substrate 1, respectively.

[0090] θ1 < θ2 … (4)

[0091] θ1 < θ2 < θ3 … (2)

[0092] Under the above conditions, compared with the case of uniformly reducing the tilt angle, it is possible to suppress current leakage between adjacent sub-pixels SP and improve light extraction efficiency.

[0093] Definition of tilt angle

[0094] The definition of the tilt angle is illustrated using the second sub-pixel SPG as an example.

[0095] like Figure 1 and Figure 2 As shown, observe the cross-section obtained by cutting each sub-pixel SP along a plane perpendicular to substrate 1. Figure 3 yes Figure 2 Enlarged image.

[0096] like Figure 3 As shown, the insulating layer 3 covering the end of the second lower electrode 2G contained in the second sub-pixel SPG has a second end portion 31G (311G, 312G) and a second top portion 32G (321G, 322G). The corresponding insulating layer 3 also has a second portion 33G (331G, 332G) between the second end portion 31G and the second top portion 32G. Here, the second portion 33G (331G, 332G) includes a sloped portion that extends upward toward the upper side of the second light-emitting area where the second lower electrode 2G and the organic layer 4 are in contact with each other, in the direction normal to the sloped portion. In the following description, the sloped portion extending upward toward the light-emitting area in the direction normal will also be referred to as the effective sloped portion. In this embodiment, the entire second portion 33G is the effective sloped portion.

[0097] In this specification, the tilt angle of Part 2 33G is calculated as follows. The tilt angles of Part 1 33R and Part 33B can also be calculated in the same way.

[0098] exist Figure 3 In the cross-sectional view, firstly, straight lines are drawn to divide the portion between the second end 31G and the second top 32G into ten equal regions in the height direction (i.e., in the direction perpendicular to the first surface of the substrate 1). When the second top 32G includes a flat portion, straight lines are drawn to divide the portion of the flat portion closest to the second end 31G and the portion between the second end 31G into ten equal regions in the direction perpendicular to the first surface of the substrate 1. In other words, when the second top 32G includes a flat portion, the portion of the flat portion closest to the second end 31G and the portion between the second end 31G is given as the second portion 33G. The above aspects also apply to the first portion 33R and the third portion 33B. In addition to the uppermost straight line (the straight line furthest from the substrate 1) and the lowermost straight line (the straight line closest to the substrate 1), the nine points where the insulating layer 3 intersects with nine of the eleven straight lines (in Figure 3The angle formed between the insulating layer 3 and the first surface is measured (indicated by the open circle), and the average of the 9 measured angles is calculated and obtained as the inclination angle of the inclined portion of the insulating layer 3.

[0099] Shape of the inclined portion of each sub-pixel SP

[0100] The shape of the inclined portion of the insulating layer 3 included in each sub-pixel SP in the organic light emitting device 100 according to the present embodiment will be described below. Figure 3 The shape of the inclined portion of each sub-pixel SP

[0101] As Figure 3 indicated, it is assumed that the first portion 33R has a width W11 and a height H11, the second portion 33G has a width W12 and a height H12, and the third portion 33B has a width W13 and a height H13. Here, the width W11 of the first portion 33R is the distance between the first end portion 31R and the first top portion 32R in the direction parallel to the first surface of the substrate 1. The height H11 of the first portion 33R is the height of the first top portion 32R with respect to the lower end of the first end portion 31R. Similarly, the width W12 of the second portion 33G is the distance between the second end portion 31G and the second top portion 32G in the direction parallel to the first surface of the substrate 1. The height H12 of the second portion 33G is the height of the second top portion 32G with respect to the lower end of the second end portion 31G. The width W13 of the third portion 33B is the distance between the third end portion 31B and the third top portion 32B in the direction parallel to the first surface of the substrate 1. The height H13 of the third portion 33B is the height of the third top portion 32B with respect to the lower end of the third end portion 31B.

[0102] Based on the above assumptions, the organic light emitting device 100 satisfies the following equations (12) and (13).

[0103] (H11 / W11) < (H12 / W12) … (12)

[0104] (H11 / W11) < (H12 / W12) < (H13 / W13) … (13)

[0105] It is preferable that the width W11 of the first portion 33R, the width W12 of the second portion 33G, and the width W13 of the third portion 33B are substantially equal. The expression "substantially equal" means that these widths are equal except for manufacturing errors.

[0106] In a plan view of the substrate 1, the first portion 33R preferably overlaps the color filter 7R. In a plan view of the substrate 1, the second portion 33G preferably overlaps the color filter 7G. In a plan view of the substrate 1, the third portion 33B preferably overlaps the color filter 7B. With the effective inclined portions overlapping the corresponding color filters 7 in a plan view as described above, light reflected or totally reflected at the inclined portions of the insulating layer 3 can be more easily guided toward the color filters 7. As a result, the light emission efficiency can be improved for the desired color, and both the light emission efficiency and the color gamut can be improved.

[0107] The organic light emitting device 100 has been described above as satisfying the formulae (4) and (2). However, the present invention is not limited to this case, and the organic light emitting device 100 can satisfy only the formula (4) without satisfying the formula (2). For example, an organic light emitting device satisfying the formula (4) and being set to θ2= θ3 also falls within the scope of the present invention. Likewise, the organic light emitting device 100 has been described above as satisfying the formulae (12) and (13). However, the present invention is not limited to this case, and the organic light emitting device 100 can satisfy only the formula (12) without satisfying the formula (13). For example, an organic light emitting device satisfying the formula (12) and being set to (H12 / W12) = (H13 / W13) also falls within the scope of the present invention.

[0108] Second Embodiment

[0109] The organic light emitting device according to the second embodiment of the present invention will be described below with reference to Figure 4 The organic light emitting device according to the second embodiment of the present invention will be described below with reference to

[0110] Figure 4 is a cross-sectional view showing the configuration of an organic light emitting device 200 according to the second embodiment. The organic light emitting device 200 according to the second embodiment differs from the organic light emitting device 100 according to the first embodiment in that the color filter layer 70 includes regions in which the color filters 7 partially overlap each other. The organic light emitting device 200 includes an overlapping region 71 in which an end portion of the first color filter 7R rides on and overlaps an end portion of the second color filter 7G. The organic light emitting device 200 also includes an overlapping region 72 in which an end portion of the third color filter 7B rides on and overlaps an end portion of the second color filter 7G. If light emitted from the light emitting element 10 in a certain sub-pixel SP passes through the color filter 7 of an adjacent sub-pixel SP and is taken out to the outside, unintended light emission can occur, and the color gamut can become narrow. In the present embodiment, the overlapping regions between the color filters 7 are formed at positions at which light emitted from the light emitting element 10 in a certain sub-pixel SP can enter the color filter 7 in an adjacent sub-pixel SP. With the presence of the overlapping regions, light can be attenuated by the action of two color filters 7, and thus the narrowing of the color gamut can be suppressed.

[0111] As Figure 4 shown, the organic light emitting device 200 includes the insulating layer 3 having two mountains between every two adjacent subpixels. For example, when observing the upper surface of the insulating layer 3 covering the end of the first lower electrode 2R and the end of the second lower electrode 2G while following it from the first end 31R on the first lower electrode 2R to the second end 31G on the second lower electrode 2G, there are, in order, the four inclined portions given below. That is, there are an inclined portion (effective inclined portion) 33R facing the light emitting region of the first subpixel SPR, an inclined portion 34R not facing the light emitting region of the first subpixel SPR, an inclined portion 34G not facing the light emitting region of the second subpixel SPG, and an inclined portion (effective inclined portion) 33G facing the light emitting region of the second subpixel SPG. Among the four inclined portions, the inclined portion 34R and the inclined portion 34G can reflect light emitted from the adjacent subpixel to be incident on the color filter 7 of a different color. In the present embodiment, in view of the above, the inclined portion 34R and the inclined portion 34G are configured to overlap the above-described overlapping region 71 between the adjacent color filters in a plan view. Although the overlapping region 71 is shown as overlapping the inclined portion 34R and the inclined portion 34G, the present application is not limited to this case. It is only required that at least one of the inclined portion 34R and the inclined portion 34G overlap the overlapping region 71.

[0112] In the present embodiment, preferably, the inclined portion (effective inclined portion) 33R and the inclined portion (effective inclined portion) 33G do not overlap the overlapping region 71 between the adjacent color filters 7 in a plan view. With this configuration, light reflected or totally reflected at the effective inclined portions is extracted to the outside of the light emitting element without being blocked by the overlapping region 71 between the adjacent color filters 7, and thus the light emitting efficiency can be improved.

[0113] Third Embodiment

[0114] An organic light emitting device according to the third embodiment of the present application will be described below with reference to Figure 5 the drawings. The following description is mainly made with respect to the aspects of difference from the second embodiment.

[0115] Figure 5is a cross-sectional view showing a configuration of an organic light emitting device 300 according to a third embodiment. The organic light emitting device 300 according to the third embodiment includes a microlens array MLA on the second planarization layer 9 in addition to the configuration of the organic light emitting device 200 according to the second embodiment. The microlens array MLA includes a first microlens 11R corresponding to the first light emitting element 10R, a second microlens 11G corresponding to the second light emitting element 10G, and a third microlens 11B corresponding to the third light emitting element 10B. These microlenses 11 are each configured to overlap a center of a light emitting region of the corresponding light emitting element 10 in a plan view. The light emitting region of the corresponding light emitting element 10 is defined by the opening in the insulating layer 3, and the center of the light emitting region can be set as a barycenter of the opening in the insulating layer 3.

[0116] Each microlens 11 included in the microlens array MLA has a light condensing effect. The microlens 11 has a function of condensing light incident from the same side as the color filter 7 and outputting the condensed light from a surface located on the side opposite to the color filter 7. Therefore, light L2R that is reflected or totally reflected at the inclined portion of the insulating layer 3 can be output as light L3R propagating more toward the front direction, and thus the light emitting efficiency in the front direction can be further improved.

[0117] The microlens 11 constituting the microlens array MLA can be a microlens known in the art. The material of the microlens 11 can be a resin. The microlens array MLA can be formed, for example, by forming a film (a photoresist film) made of a material for forming the microlens 11, and then exposing and developing the photoresist film using a mask having a continuous gradation change. A grey mask or an area gradation mask can be used as the above-mentioned mask. In addition, the lens shape can be adjusted by performing an etching back process on the microlens 11 that has been formed via the exposure and development processes. It is only required that the shape of the microlens 11 be able to refract the emitted light, and the lens shape can be spherical or aspherical. The cross-sectional shape of the microlens 11 can be asymmetric.

[0118] The exit surface side of the microlens 11 (i.e., the side of the microlens 11 opposite to the color filter 7) is preferably filled with a material having a lower refractive index than the microlens 11, typically air. In this condition, the light condensing effect of the microlens 11 can be increased.

[0119] The sealing (protective) layer 6 can have a protrusion 61 protruding in a direction away from the substrate 1 from the upper surface. The protrusion 61 of the sealing layer 6 also has a light condensing effect like the microlens 11. The protrusion 61 of the sealing layer 6 preferably overlaps the effective inclined portions (33R, 33G, 33B) of the insulating layer 3 in a plan view. With this configuration, an effect similar to the light condensing effect of the microlens 11 can be expected, and light reflected or totally reflected at the effective inclined portions of the insulating layer 3 can be more easily extracted toward the front direction.

[0120] Fourth Embodiment

[0121] An organic light emitting device according to a fourth embodiment of the present application will be described below with reference to Figures 6 to 8 An organic light emitting device according to a fourth embodiment of the present application will be described below with reference to

[0122] Figure 6 is a cross-sectional view showing the configuration of an organic light emitting device 400 according to the fourth embodiment. The organic light emitting device 400 according to the fourth embodiment includes a reflective layer 12 and an optical adjustment layer 14 between the substrate 1 and the lower electrode 2 in addition to the configuration of the organic light emitting device 300 according to the third embodiment.

[0123] The reflective layer 12 is a layer that reflects light generated from the organic layer 4 and propagating toward the substrate 1. The reflective layer 12 can be separate for each sub-pixel SP. Figure 6 An example of the reflective layer 12 that is separate for each sub-pixel SP is shown. The first sub-pixel SPR includes a first reflective layer 12R, the second sub-pixel SPG includes a second reflective layer 12G, and the third sub-pixel SPB includes a third reflective layer 12B.

[0124] From the viewpoint of the light emitting efficiency of the organic light emitting device 400, a material having a reflectance of 50% or more for visible light can be used as the reflective layer 12. More specifically, a metal such as Al or Ag, or an alloy obtained by adding, for example, Si, Cu, Ni, Nd, or Ti to any of these metals can be used as the reflective layer 12. The reflective layer 12 can include a barrier layer formed on a surface thereof that reflects light. A metal such as Ti, W, Mo, or Au, an alloy of any of these metals, or a transparent conductive oxide such as ITO or IZO can be used as the material of the barrier layer on the reflective layer 12.

[0125] The reflective layer 12 can include a conductive layer 13 at a peripheral region of the reflective layer 12. The conductive layer 13 is made of, for example, Ti or TiN, and can function as the above-described barrier layer. With the presence of the conductive layer 13 formed on the reflective layer 12, it is possible to reduce the electrical resistance when the reflective layer 12 and the lower electrode 2 are electrically connected to each other. For example, each lower electrode 2 can extend to a position formed on an opening (contact hole) in the insulating layer 3, and can be electrically connected to the conductive layer 13 disposed on the peripheral portion of the reflective layer 12 located below the opening via the opening.

[0126] According to the present embodiment, since the reflective layer 12 is formed on the first surface of the substrate 1, the lower surface of the reflective layer 12 coincides with the first surface. Therefore, the lower surface of the reflective layer 12 can be regarded as the first surface.

[0127] The optical adjustment layer 14 is a light-transmissive insulating layer located between the reflective layer 12 and the lower electrode 2. The optical adjustment layer 14 included in the organic light emitting device 400 is continuously disposed throughout the plurality of sub-pixels SP, but the thickness of the optical adjustment layer 14 is different for each sub-pixel SP. This configuration can provide a configuration (resonance structure) in which the optical path length between the reflective layer 12 and the light emitting position in the light emitting layer of the organic layer 4 is optimized for each color.

[0128] The optical adjustment layer 14 can be composed of a single layer or multiple layers. The optical adjustment layer 14 can be composed of multiple layers, and the number of layers stacked can be different for each sub-pixel SP. The material of the optical adjustment layer 14 is not limited to a specific material, and for example, silicon oxide (SiOx) can be used.

[0129] The lower electrode 2 is located on the optical adjustment layer 14. As described above, the lower electrode 2 is disposed to be electrically isolated for each sub-pixel SP. The lower electrode 2 can be made of a transparent material, such as an oxide conductor such as ITO, IZO, ZnO, AZO, or IGZO. Both the optical adjustment layer 14 and the lower electrode 2 are optically transparent.

[0130] The optical path length between the upper electrode 5 and the reflective layer 12 in the organic light emitting device 400 according to the present embodiment can be set to provide an enhanced interference structure. The enhanced interference structure can also be referred to as a resonance structure.

[0131] By forming the organic layer 4 and the optical adjustment layer 14 to satisfy the enhanced optical interference condition, it is possible to increase the intensity of light extracted from the organic light emitting device using optical interference. By setting the optical condition to enhance light extracted in the front direction, it is possible to more efficiently emit light in the front direction. It is also known that the half-value width of the emission spectrum of light enhanced using optical interference is reduced compared to the emission spectrum before interference. In other words, it is possible to improve color purity.

[0132] In designing the organic light emitting device for light having a wavelength λ, by adjusting the distance d0 from the light emitting position in the light emitting layer of the organic layer 4 to the reflecting surface of the reflecting layer 12 to d0 = iλ / 4n0 (i = 1, 3, 5,...), it is possible to achieve enhanced interference.

[0133] As a result, in the emission distribution of light having a wavelength λ, the component propagating toward the front direction is increased, thereby improving the front luminance. In the above formula, n0 represents the refractive index at the wavelength λ of the layer located between the light emitting position and the reflecting surface.

[0134] In the present embodiment, in order to optimize the optical path length from the light emitting position in the light emitting layer of the organic layer 4 to the reflecting layer 12 for each color, the optical path length Lr from the light emitting position in the light emitting layer of the organic layer 4 to the reflecting surface (e.g., the upper surface) of the reflecting layer 12 is set to substantially satisfy the following formula (14). The optical path length Lr is the sum of the product of the refractive index n j and the thickness d j of each layer in the organic layer. Thus, Lr can be expressed by Σn j × d j or n0×d0. In formula (14), φ represents a negative value.

[0135] Lr = (2m - (φr / π)) x (λ / 4)... (14)

[0136] In the above formula (14), m represents an integer of 0 or more (non-negative integer), and φr represents the sum of the phase shift [rad] when light having a wavelength λ is reflected at the reflecting surface. In the case of φr = -π and m = 0, Lr = λ / 4 is obtained. In the case of φr = -π and m = 1, Lr = 3λ / 4 is obtained. Hereinafter, the condition of m = 0 in the above formula (14) is referred to as the λ / 4 interference condition, and the condition of m = 1 in the above formula (14) is referred to as the 3λ / 4 interference condition.

[0137] Further, the optical path length Ls between the light emitting position in the light emitting layer of the organic layer 4 and the reflecting surface (e.g., the lower surface) of the upper electrode 5 is set to satisfy the following formula (15).

[0138] Ls = (2m' - (φs / π)) x (λ / 4) = -(φs / π)) x (λ / 4)... (15)

[0139] In the above formula (15), m' represents an integer of 0 or more (non-negative integer), and φs represents the sum of the phase shift [rad] when light having a wavelength λ is reflected at the reflecting surface.

[0140] Thus, the total layer interference L from the reflecting layer 12 to the upper electrode 5 is set to substantially satisfy the following formula (16).

[0141] L = (Lr+Ls) = (2m-(φ / π)) x (λ / 4)... (16)

[0142] In the above formula (16), φ represents the sum (φr+φs) of the phase shifts when light having a wavelength λ is reflected at the reflective surface 12 and the upper electrode 5.

[0143] In an actual organic light emitting device, the full layer interference L need not be exactly identical to the value satisfying the above formula, in consideration of the viewing angle characteristics and the like in a trade-off relationship with the light extraction efficiency in the front direction. More specifically, the full layer interference L can include an error within a numerical range of ±λ / 8 from the value satisfying formula (16). The value of the full layer interference L can deviate from the allowable value of the interference condition by 50 nm or more and 75 nm or less.

[0144] Thus, the organic light emitting device 400 according to the present embodiment preferably satisfies the following formula (17). Furthermore, the full layer interference L need only fall within a numerical range of ±λ / 16 from the value satisfying formula (16), and preferably satisfies the following formula (17').

[0145] (λ / 8) x (4m-(2φ / π)-1) < L < (λ / 8) x (4m-(2φ / π)+1)... (17)

[0146] (λ / 16) x (8m-(4φ / π)-1) < L < (λ / 16) x (8m-(4φ / π)+1)... (17')

[0147] Here, the light emitting wavelength λ can be the light emitting wavelength at which the intensity of light emission has a maximum peak value. In light emission of an organic compound, when the light emission spectrum includes a plurality of peak values, the intensity of light emission is typically maximum at one of the peak values having the shortest wavelength. Thus, the light emitting wavelength can be the wavelength at the peak value having the shortest wavelength. The light emission spectrum represents the light emission spectrum after passing through a color filter (CF) of each light emitting element.

[0148] With the above configuration, light emitted from the organic layer 4 passes through both the lower electrode 2 and the optical adjustment layer 14, and then is reflected at the reflective layer 12. The light reflected at the reflective layer 12 enters the inclined portion of the insulating layer 3 at an incident angle smaller than that of the light reflected at the lower electrode 2. Assume that the incident angle of the light reflected at the lower electrode 2 with respect to the inclined portion of the insulating layer 3 is θ k , and the incident angle of the light reflected at the reflective layer 12 with respect to the inclined portion of the insulating layer 3 is θ l , θ k > θ lis established. Thus, it is understood that, in the case where the reflective layer 12 and the optical adjustment layer 14 are formed as in the present embodiment, light can more easily be reflected or totally reflected at the inclined portion of the insulating layer 3 as compared to the case where the reflective layer 12 and the optical adjustment layer 14 are not formed as in the first embodiment. Thus, by using the enhanced interference structure as in the present embodiment, the light emission efficiency can be further improved.

[0149] A preferred example of the organic light emitting device 400 according to the present embodiment will be described below.

[0150] As Figure 6 indicated, the distance d l 1 from the upper surface of the first reflective layer 12R in the first light emitting element 10R to the upper surface of the first lower electrode 2R and the distance d2 from the upper surface of the second reflective layer 12G in the second light emitting element 10G to the upper surface of the second lower electrode 2G are preferably different from each other. The distance d1 is the shortest distance from the upper surface of the first reflective layer 12R in the first light emitting element 10R to the upper surface of the first lower electrode 2R. The distance d2 is the shortest distance from the upper surface of the second reflective layer 12G in the second light emitting element 10G to the upper surface of the second lower electrode 2G. Further, the distance d1, the distance d2 and the distance d3 from the upper surface of the third reflective layer 12B in the third light emitting element 10B to the upper surface of the third lower electrode 2B are preferably all different from each other. The distance d3 is the shortest distance from the upper surface of the third reflective layer 12B in the third light emitting element 10B to the upper surface of the third lower electrode 2B. Under the above conditions, the effect of improving the light emission efficiency by reflection or total reflection can be increased.

[0151] Further, as Figure 6 indicated, the distances d l 1 to d3 preferably satisfy the following formula (18) or (19).

[0152] d1 > d2 … (18)

[0153] d1 > d2 > d3 … (19)

[0154] As described above, light reflected at a position far from the insulating layer 3 enters the inclined portion of the insulating layer 3 at a larger incident angle. Thus, by the setting satisfying the above formula (18) or (19), for a light emitting element 10 which does not easily reflect or totally reflect incident light (i.e., has a larger critical angle θ c ), the incident angle with respect to the inclined portion of the insulating layer 3 can be increased, and thus the corresponding light emitting element can more easily reflect or totally reflect incident light. As a result, the effect of improving the light emission efficiency can be further exerted while suppressing current leakage between sub-pixels.

[0155] As Figure 7As shown, the organic light emitting apparatus 400 according to the present embodiment includes a second flat portion 35G located between the second end portion 31G and the second top portion 32G, which is substantially parallel to the substrate 1. The organic light emitting apparatus 400 also includes a second upper side inclined portion 36G located between the second flat portion 35G and the second top portion 32G, and a second lower side inclined portion 37G located between the second flat portion 35G and the second end portion 31G. In other words, the second portion 33G is composed of the second flat portion 35G, the second upper side inclined portion 36G, and the second lower side inclined portion 37G. Although the above is described with the focus on the second light emitting element 10G in the second sub-pixel SPG, the same applies to the other sub-pixels SP. Thus, looking at the first sub-pixel SPR, the first portion 33R is composed of the first flat portion 35R, the first upper side inclined portion 36R, and the first lower side inclined portion 37R. Looking at the third sub-pixel SPB, the third portion 33B is composed of the third flat portion 35B, the third upper side inclined portion 36B, and the third lower side inclined portion 37B.

[0156] The lower side inclined portion 37 is an inclined portion having a steeper region with a larger inclination angle than the upper side inclined portion 36. The length H3 of the lower side inclined portion 37 in the height direction is preferably shorter than the length H2 of the upper side inclined portion 36 in the height direction.

[0157] As described above, since the inclination angle θ j of the inclined portion of the insulating layer 3 is reduced, the light extraction efficiency of the organic light emitting apparatus can be improved. However, if the inclination angle θ j is excessively reduced, current leakage between adjacent sub-pixels SP is more likely to occur. In the present embodiment, in order to solve the above problem, the inclined portion of the insulating layer 3 includes not only the upper side inclined portion 36 having the function of making light more easily reflect or totally reflect and improving the light extraction efficiency, but also the lower side inclined portion 37 having the function of providing a steeper inclined portion and suppressing current leakage between sub-pixels SP. As a result, it is possible to achieve an improvement in the light extraction efficiency due to reflection or total reflection at the inclined portion of the insulating layer 3, while suppressing current leakage between adjacent sub-pixels SP.

[0158] Since the lower side inclined portion 37 has a steeper inclination than the upper side inclined portion 36, the thickness of the organic layer 4 formed on the lower side inclined portion 37 can be reduced. In particular, by reducing the thickness of the charge transport layer 41, which is one of the multiple layers constituting the organic layer 4 and is located on the side closer to the lower electrode 2, it is possible to suppress charge crosstalk (i.e., current leakage) between sub-pixels SP via the charge transport layer 41 having high conductivity. Thus, the lower side inclined portion 37 has the effect of suppressing charge crosstalk between sub-pixels SP with a steeper inclination. However, if the length of the lower side inclined portion 37 in the height direction is excessively long, as Figure 8As shown, the film thickness of the organic layer 4 becomes thin in some places, and current leakage between the upper electrode 5 and the lower electrode 2 is more likely to occur. In the present embodiment, in order to solve the above problem, the length H3 in the height direction of the lower side inclined portion 37 having a steeper inclination is set shorter than the length H2 in the height direction of the upper side inclined portion 38. As a result, it is possible to suppress current leakage between the upper electrode 5 and the lower electrode 2 while suppressing the charge crosstalk between the sub-pixels SP.

[0159] On the other hand, the upper side inclined portion 36 has an effect of reflecting or totally reflecting light with a smaller inclination angle and improving the light extraction efficiency. This effect can be enhanced by increasing the size of the region where light is reflected or totally reflected. For this reason, from the viewpoint of enhancing the effect of improving the light extraction efficiency, it is preferable that the length H2 in the height direction of the upper side inclined portion 36 be longer and the inclination angle of the upper side inclined portion 36 be smaller.

[0160] The length H3 in the height direction of the lower side inclined portion 37 is preferably longer than the length (thickness) Tl in the height direction of the charge transport layer 41 (typically, a hole transport layer) in the portion where it contacts the lower electrode 2. Under this condition, it is possible to easily thin the charge transport layer 41 along the lower side inclined portion 37. As a result, it is possible to suppress the charge crosstalk between the sub-pixels SP.

[0161] Further, the length H3 in the height direction of the lower side inclined portion 37 is preferably shorter than the length (thickness) T2 in the height direction of the organic layer 4 in the portion where it contacts the lower electrode 2. Under this condition, since the portion of the organic layer 4 positioned along the lower side inclined portion 37 is buried within the portion of the organic layer 4 formed in the region parallel to the substrate 1, it is unlikely that a region where the organic layer 4 becomes too thin occurs. As a result, it is possible to suppress current leakage between the upper electrode 5 and the lower electrode 2.

[0162] The features of the present application can also be expressed as follows. As Figure 7As shown, it is assumed that the height of the first top portion 32R with respect to the upper surface of the first flat portion 35R is H21, and the distance in the direction parallel to the substrate 1 between the end of the first flat portion 35R located on the side near the first top portion 32R (located on the first top portion side) and the first top portion 32R is W21. Further, it is assumed that the height of the second top portion 32G with respect to the upper surface of the second flat portion 35G is H22, and the distance in the direction parallel to the substrate 1 between the end of the second flat portion 35G located on the side near the second top portion 32G (located on the second top portion side) and the second top portion 32G is W22. In addition, it is assumed that the height of the third top portion 32B with respect to the upper surface of the third flat portion 35B is H23, and the distance in the direction parallel to the substrate 1 between the end of the third flat portion 35B located on the side near the third top portion 32B (located on the third top portion side) and the third top portion 32B is W23.

[0163] Based on the above assumptions, the organic light emitting device 400 satisfies the following equations (20) and (21).

[0164] (H21 / W21) < (H22 / W22)... (20)

[0165] (H21 / W21) < (H22 / W22) < (H23 / W23)... (21)

[0166] The distance W21, the distance W22, and the distance W23 are preferably substantially equal. Here, the expression "substantially equal" means that these distances are equal except for manufacturing errors. When the first portion 33R, the second portion 33G, and the third portion 33B each include a plurality of flat portions, the flat portion closest to the top portion 32 among these flat portions can be regarded as the flat portion 35.

[0167] The optical adjustment layer 14 is disposed between the reflective layers 12. At this time, the optical adjustment layer 14 disposed between the reflective layers 12 preferably has a gap 15 filled with a substance having a lower refractive index than the substance forming the optical adjustment layer 14. The gap 15 can be a vacuum or an air space. In this case, due to the effect of reflection or total reflection caused by the gap 15, the light extraction efficiency can be further improved. In other words, the optical adjustment layer 14 disposed between the reflective layers 12 can include a low-density region having a lower density than the optical adjustment layer 14 disposed on the reflective layers 12. Here, the term "density" can represent an atomic density [atom / cm 3 ] or a weight density [g / cm 3 ].

[0168] As Figure 7As shown, the gap 15 can have a sharp protrusion 151 when viewed in a cross section perpendicular to the first surface of the substrate 1. The protrusion 151 can be defined by two straight lines in the above-mentioned cross section, the two straight lines intersecting at an angle of 45° or less. Further, the protrusion 151 of the gap 15 can point in a direction in which light is taken out of the organic light emitting apparatus 400.

[0169] In two light emitting elements 10 adjacent in a plan view, the sealing layer 6 can include a low-density region between the lower electrodes 2. In this case, the light emitting efficiency can be further improved due to the effect of reflection or total reflection caused by the low-density region.

[0170] The refractive index of the lower electrode 2 is preferably higher than the refractive index of the optical adjustment layer 14 at least at a certain wavelength of visible light. Under this condition, light can be reflected or totally reflected at the upper surface of the inclined portion of the optical adjustment layer 14, and the light emitting efficiency can be improved. Here, when the optical adjustment layer 14 is composed of multiple layers, the refractive index is given by the refractive index of the uppermost layer among the layers forming the optical adjustment layer 14. When the lower electrode 2 is composed of multiple layers, the refractive index is given by the refractive index of the lowermost layer among the layers forming the lower electrode 2.

[0171] Fifth Embodiment

[0172] An organic light emitting apparatus according to the fifth embodiment will be described below with reference to Figure 9 An organic light emitting apparatus according to the fifth embodiment will be described below with reference to

[0173] Figure 9 is a cross-sectional view of an organic light emitting apparatus 500 according to the fifth embodiment. In the organic light emitting apparatus 500, the shape of the lower side inclined portion 37 in the organic light emitting apparatus 400 according to the fourth embodiment is changed to a shape in which the upper corner of the lower side inclined portion 37 is chamfered. The lower side inclined portion 37 in the organic light emitting apparatus 500 includes a lower side gently inclined portion 372 corresponding to the chamfered portion and a lower side steeply inclined portion 371. The lower side steeply inclined portion 371 is a portion having a larger inclination angle as in the lower side inclined portion 37 in the organic light emitting apparatus 400, and the lower side gently inclined portion 372 is a portion having a gentler inclination (i.e., a smaller inclination angle) than the lower side steeply inclined portion 371.

[0174] With the lower side inclined portion 37 including the lower side gently inclined portion 372 as described above, the light L5G reflected at the reflection layer 12 can more easily reach the upper side inclined portion 36 without being blocked by the lower side inclined portion 37. As a result, a larger amount of light can be directed toward the upper side inclined portion 36, and the light extraction efficiency can be improved.

[0175] The length H4 in the height direction of the lower steep inclined portion 371 is preferably longer than the length (thickness) Tl in the height direction of the charge transport layer 41 (typically, a hole transport layer) in the portion thereof in contact with the lower electrode 2. In this condition, the charge transport layer 41 can be easily thinned along the lower steep inclined portion 371. As a result, the charge crosstalk between the sub-pixels SP can be suppressed.

[0176] Further, the length H4 in the height direction of the lower steep inclined portion 371 is preferably shorter than the length (thickness) T2 in the height direction of the organic layer 4 in the portion thereof in contact with the lower electrode 2. In this condition, because the portion of the organic layer 4 located along the lower steep inclined portion 371 is buried within the portion of the organic layer 4 formed in the region parallel to the substrate 1, a region where the organic layer 4 becomes too thin is unlikely to occur. As a result, the current leakage between the upper electrode 5 and the lower electrode 2 can be suppressed.

[0177] Other Embodiments

[0178] The above embodiments have been described in connection with the sub-pixels SPR, SPG, and SPB including the color filters 7R, 7G, and 7B, respectively, and emitting the first to third light by causing white light generated from the organic layer 4 to pass through the corresponding color filter 7. However, the present application is not limited to this case, and the sub-pixels SP can not need to include the color filters 7. More specifically, another configuration in which at least the light-emitting layer among the plurality of layers constituting the organic layer 4 is formed to be separate for each sub-pixel also falls within the scope of the present application. In this configuration, the first sub-pixel SPR can include a first light-emitting layer configured to emit light of a first color, the second sub-pixel SPG can include a second light-emitting layer configured to emit light of a second color, and the third sub-pixel SPB can include a third light-emitting layer configured to emit light of a third color. At least a portion of the other layers among the plurality of layers constituting the organic layer 4 other than the light-emitting layer can be configured in a form common to the plurality of sub-pixels SP. This embodiment also can provide the effect of improving the light extraction efficiency while suppressing the current leakage between the pixels.

[0179] Figure 10 FIG. 1 is a schematic view illustrating an example of a display device according to an embodiment. The display device 1000 can include a touch panel 1003, a display panel 1005, a frame 1006, a circuit board 1007, and a battery 1008 between an upper cover 1001 and a lower cover 1009. Flexible printed circuits FPCs 1002 and 1004 are connected with the touch panel 1003 and the display panel 1005, respectively. Transistors are formed on the circuit board 1007 by printing. When the display device is not portable, the battery 1008 can not be included, or can be arranged in another location even in the case of a portable device.

[0180] The display device according to the embodiment can include red, green, and blue color filters. The color filters can be composed of red, green, and blue in a delta array configuration.

[0181] The display device according to the embodiment can be used in a display unit of a portable terminal. At this time, the display device can have both a display function and an operation function. For example, the portable terminal can be a mobile phone such as a smartphone, a tablet, or a head-mounted display.

[0182] The display device according to the embodiment can be used in a display unit of an imaging device including an optical unit equipped with a plurality of lenses and an imaging element configured to receive light that has passed through the optical unit. The display unit of the imaging device can be configured to display information obtained by the imaging element. The display unit can be a display unit exposed to the outside of the imaging device, or can be a display unit arranged in a viewfinder. The imaging device can be a digital camera or a digital video camera.

[0183] Figure 11A is a schematic view showing an example of an imaging device according to the embodiment. The imaging device 1100 can include a viewfinder 1101, a back display 1102, an operation unit 1103, and a housing 1104. The viewfinder 1101 can include a display device according to the embodiment. In this case, the display device can display not only an image to be captured but also environmental information, an image capturing instruction, or the like. The environmental information can contain, for example, the intensity of extraneous light, the direction of extraneous light, the moving speed of a subject, and the possibility that a subject is blocked by an obstacle.

[0184] Because a good timing for capturing an image is limited within a short period of time, it is desirable to display information as quickly as possible. From this aspect, it is preferable to use a display device to which an organic light emitting element according to the present application is applied. This is because the organic light emitting element has a high response speed. A display device to which the organic light emitting element is applied can be more suitably used in a device that requires a higher display speed than a liquid crystal display device.

[0185] The imaging device 1100 includes an optical unit (not shown). The optical unit includes a plurality of lenses and focuses an image on an imaging element arranged in the housing 1104. The lenses can adjust a focal point by adjusting the relative positions of the lenses. The focal point adjustment can be automatic. The imaging device can also be referred to as an opto-electric conversion device. As an imaging method, the opto-electric conversion device can employ not only a method of sequentially capturing an image but also a method of detecting a difference from a previous image, a method of always extracting a part of a recorded image, or the like.

[0186] Figure 11Bis a schematic view showing an example of an electronic device according to an embodiment. The electronic device 1200 includes a display unit 1201, an operation unit 1202, and a housing 1203. The housing 1203 can house a circuit, a printed board on which the circuit is formed, a battery, and a communication unit. The operation unit 1202 can be constituted by a button or a sensitive unit such as a touch panel. The operation unit can be a biometric identification unit such as a unit that identifies a fingerprint and unlocks a device. An electronic device including a communication unit can also be referred to as a communication device. The electronic device can have a camera function by including a lens and an image pickup element. An image captured with the camera function is displayed on the display unit. The electronic device can be, for example, a smartphone or a notebook computer.

[0187] Figure 12A and Figure 12B are schematic views showing another example of a display device according to an embodiment. Figure 12A The display device 1300 represents a display device such as a TV monitor or a PC monitor. The display device 1300 includes a frame 1301 and a display unit 1302. The light-emitting device according to an embodiment can be used as the display unit 1302.

[0188] The display device 1300 further includes a base 1303 that supports the frame 1301 and the display unit 1302. The base 1303 is not limited to the form shown. The lower edge of the frame 1301 can also function as a base. Figure 12A

[0189] The frame 1301 and the display unit 1302 can have a curved shape. The radius of curvature of the curved shape can be 5000 mm or more and 6000 mm or less.

[0190] Figure 12B is a schematic view showing still another example of a display device according to an embodiment. Figure 12B The display device 1310 shown can be folded and is generally referred to as a foldable display device. The display device 1310 includes a first display unit 1311, a second display unit 1312, a housing 1313, and a folding point 1314. The first display unit 1311 and the second display unit 1312 can each include a light-emitting device according to an embodiment. The first display unit 1311 and the second display unit 1312 can be one seamless unit of a display device. The first display unit 1311 and the second display unit 1312 can be separated from each other at the folding point. The first display unit 1311 and the second display unit 1312 can display different images or can display one image in combination of both the first display unit and the second display unit.

[0191] Figure 13A ​is a schematic view showing an example of a lighting device according to an embodiment. The lighting device 1400 can include a housing 1401, a light source 1402, a circuit board 1403, an optical film 1404, and a light diffuser 1405. The light source 1402 can include an organic light emitting element according to an embodiment. The optical film can be an optical filter for improving color rendering properties of the light source. The light diffuser can efficiently diffuse light from the light source as to illuminate a target, and can cause light to reach a wider space. The optical filter and the light diffuser can be disposed at a light exit side of the lighting device. A cover can be disposed at the outermost side as necessary.

[0192] The lighting device illuminates, for example, a room. The lighting device can emit not only white light and neutral white light, but also light of any color in a range from blue to red. The lighting device can include a light control circuit for controlling the emitted light. The lighting device can include an organic light emitting element according to the present application and a power supply circuit connected to the organic light emitting element. The power supply circuit is a circuit for converting an AC voltage into a DC voltage. The word "white" means a color with a color temperature of 4200 K, and the word "neutral white" means a color with a color temperature of 5000 K. The lighting device can include a color filter.

[0193] The lighting device according to an embodiment can further include a heat dissipation unit. The heat dissipation unit dissipates heat in the device to the outside of the device, and can be made of, for example, a metal or liquid silicon having a high specific heat.

[0194] Figure 13B is a schematic view showing a car as an example of a moving object according to an embodiment. The car 1500 includes a tail light 1501 as an example of a car lamp. The tail light 1501 of the car 1500 can be configured to be lit, for example, when a brake is operated.

[0195] The tail light 1501 can include an organic light emitting element according to an embodiment. The tail light can include a protective member for protecting the organic light emitting element. The protective member can be made of any appropriate material as long as the material has a particularly high strength and is transparent. However, the protective member is preferably made of, for example, polycarbonate. For example, a derivative of furandicarboxylic acid or acrylonitrile can be added to the polycarbonate.

[0196] The car 1500 can include a vehicle body 1503 and a window 1502 mounted to the vehicle body 1503. The window can be a transparent display, provided that it is not a window for a driver to visually check the front and rear of the car. The transparent display can include an organic light emitting element according to an embodiment. In this case, components such as electrodes included in the organic light emitting element are formed of a transparent member.

[0197] The mobile object according to the embodiment can be a ship, an airplane, a drone, or the like. The mobile object can include a main body and a light fixture arranged to the main body. The light fixture can generate light to notify a position of the main body. The light fixture includes the organic light emitting element according to the embodiment.

[0198] An application example of the display device according to the embodiment will be described below with reference to Figure 14A and Figure 14B An application example of the display device according to the embodiment will be described below with reference to

[0199] Figure 14A A pair of glasses 1600 (smart glasses) representing one application example is shown. A camera device 1602 such as a CMOS sensor or a SPAD is arranged on the front side of a lens 1601 of each of the glasses 1600. Further, any one of the display devices according to the embodiment described above is arranged on the back side of the lens 1601.

[0200] The glasses 1600 further include a control device 1603. The control device 1603 functions as a power supply for supplying power to the camera device 1602 and the display device according to the embodiment. In addition, the control device 1603 controls the operation of the camera device 1602 and the display device. An optical system for converging light to the camera device 1602 is formed on the lens 1601.

[0201] Figure 14B A pair of glasses 1610 (smart glasses) representing another application example is shown. The pair of glasses 1610 includes a control device 1612 on which a camera device and a display device corresponding to the camera device 1602 described above are mounted. An optical system for converging light to the camera device in the control device 1612 and projecting light from the display device is formed on a lens 1611, and an image is projected onto the lens 1611. The control device 1612 functions as a power supply for supplying power to the camera device and the display device, and controls the operation of the camera device and the display device. The control device can include a line-of-sight detector for detecting a line-of-sight of a wearer (user). The line-of-sight can be detected using infrared radiation. An infrared light emitter emits infrared light to an eyeball of a user who is gazing at a displayed image. Reflection light of the emitted infrared light from the eyeball is detected by a camera unit including a light receiving unit, whereby an image of the eyeball is obtained. With the provision of a unit for reducing light incident on the display device from the infrared light emitter in a plan view, degradation of image quality is mitigated.

[0202] The line of sight of the user toward the displayed image is detected from the eye image captured by the above-described infrared imaging technique. Appropriate methods among known methods can be optionally applied to detect the line of sight from the eye image. As an example, a line-of-sight detection method based on a Purkinje image formed by reflected illumination light at the cornea can be used.

[0203] In more detail, the line-of-sight detection process is performed according to the pupil corneal reflection method. With the pupil corneal reflection method, based on a pupil image and a Purkinje image contained in the eye image, a line-of-sight vector representing the direction (angle of rotation) of the eye is calculated, whereby the line of sight of the user is detected.

[0204] The display device according to the embodiment of the present application can include an imaging device having a light-receiving element, and can control an image displayed on the display device in accordance with information on the user's line of sight provided from the imaging device.

[0205] More specifically, the display device determines a first visual region in which the user is gazing and a second visual region other than the first visual region based on the line-of-sight information. The first and second visual regions can be determined by a control means in the display device, or can be obtained by receiving those visual regions which have been determined by an external control means. In the display region of the display device, the display resolution in the first visual region can be controlled to be higher than the display resolution in the second visual region. In other words, the display resolution can be set to be lower in the second visual region than in the first visual region.

[0206] In addition, the display region includes a first display region and a second display region different from the first display region, and one of the first and second display regions having a higher priority is determined based on the line-of-sight information. The first and second display regions can be determined by a control means in the display device, or can be obtained by receiving those display regions which have been determined by an external control means. The resolution of the region having the higher priority can be controlled to be higher than the resolution of the region other than the region having the higher priority. In other words, the resolution can be set to be lower in the region having the lower priority.

[0207] The first visual region or the region having the higher priority can be determined using AI. The AI can be a model configured to estimate the angle of the line of sight and the distance to a target located in front of the line of sight from the eye image by using the eye image and the direction in which the eye actually gazes in the image as teacher data. The AI program can be installed in any one of the display device, the imaging device, and the external device. When the AI program is installed in the external device, the AI program is transmitted to the display device via communication.

[0208] When display control is performed in accordance with visual recognition, the present application can preferably be applied to smart glasses further including an imaging device configured to capture an image of an external field. The smart glasses are capable of displaying information obtained by capturing an image of the external field in real time.

[0209] As described above, by using a device equipped with the organic light emitting element according to the embodiment, it is possible to present display that ensures good image quality and is stable even for a long time.

[0210] While the present application has been described with reference to exemplary embodiments, it is to be understood that the application is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all the variations, equivalents and alternatives.

Claims

1. An organic light emitting device comprising subpixels arranged on a substrate, the subpixels comprising a first subpixel, a second subpixel, and a third subpixel, each of the first subpixel, the second subpixel, and the third subpixel comprising, in order from a side close to the substrate, a lower electrode, an insulating layer covering end portions of the lower electrode, an organic layer, and an upper electrode, at least a portion of the organic layer being continuously arranged in at least two regions of regions between a position on a first lower electrode included in the first subpixel and a position on a second lower electrode included in the second subpixel, between the position on the second lower electrode and a position on a third lower electrode included in the third subpixel, and between the position on the third lower electrode and the position on the first lower electrode, the insulating layer having at least one top portion in each of regions between a subpixel adjacent to the first subpixel and the first subpixel, between a subpixel adjacent to the second subpixel and the second subpixel, and between a subpixel adjacent to the third subpixel and the third subpixel, and provided that a portion of the insulating layer between a first end portion thereof and a first top portion thereof is referred to as a first portion, the first end portion being given by an end portion of the insulating layer on the first lower electrode, the first top portion being given by the top portion closest to the first end portion, provided that a portion of the insulating layer between a second end portion thereof and a second top portion thereof is referred to as a second portion, the second end portion being given by an end portion of the insulating layer on the second lower electrode, the second top portion being given by the top portion closest to the second end portion, and provided that a portion of the insulating layer between a third end portion thereof and a third top portion thereof is referred to as a third portion, the third end portion being given by an end portion of the insulating layer on the third lower electrode, the third top portion being given by the top portion closest to the third end portion, the following expressions (1) and (2) are satisfied: λ1 > λ2 > λ3... (1) θ1 < θ2 < θ3... (2) in expression (1), λ1 denotes a wavelength at which light emitted from the first subpixel has a maximum intensity, λ2 denotes a wavelength at which light emitted from the second subpixel has a maximum intensity, and λ3 denotes a wavelength at which light emitted from the third subpixel has a maximum intensity, and in expression (2), θ1 denotes an inclination angle of the first portion with respect to the substrate, θ2 denotes an inclination angle of the second portion with respect to the substrate, and θ3 denotes an inclination angle of the third portion with respect to the substrate. characterized in that ​ ​ ​ ​ ​ ​ ​ ​ 2. An organic light emitting device comprising subpixels arranged on a substrate, the subpixels comprising a first subpixel, a second subpixel, and a third subpixel, each of the first subpixel, the second subpixel, and the third subpixel comprising, in order from a side close to the substrate, a lower electrode, an insulating layer covering an end portion of the lower electrode, an organic layer, and an upper electrode, at least a portion of the organic layer being continuously arranged in at least two regions of a region between a position on a first lower electrode included in the first subpixel and a position on a second lower electrode included in the second subpixel, a region between the position on the second lower electrode and a position on a third lower electrode included in the third subpixel, and a region between the position on the third lower electrode and the position on the first lower electrode, the insulating layer having at least one top portion in a region between a subpixel adjacent to the first subpixel and the first subpixel, a subpixel adjacent to the second subpixel and the second subpixel, and a subpixel adjacent to the third subpixel and the third subpixel, and provided that a portion of the insulating layer between a first end portion thereof and a first top portion thereof is referred to as a first portion, the first end portion being given by an end portion of the insulating layer on the first lower electrode, the first top portion being given by the top portion closest to the first end portion, provided that a portion of the insulating layer between a second end portion thereof and a second top portion thereof is referred to as a second portion, the second end portion being given by an end portion of the insulating layer on the second lower electrode, the second top portion being given by the top portion closest to the second end portion, and provided that a portion of the insulating layer between a third end portion thereof and a third top portion thereof is referred to as a third portion, the third end portion being given by an end portion of the insulating layer on the third lower electrode, the third top portion being given by the top portion closest to the third end portion, the following expressions (1) and (5) are satisfied: λ1 > λ2 > λ3... (1) (H11 / W11) < (H12 / W12) < (H13 / W13)... (5) in expression (1), λ1 denotes a wavelength at which light emitted from the first subpixel has a maximum intensity, λ2 denotes a wavelength at which light emitted from the second subpixel has a maximum intensity, and λ3 denotes a wavelength at which light emitted from the third subpixel has a maximum intensity, in expression (5), H11 denotes a height of the first top portion with respect to a lower end of the first end portion, H12 denotes a height of the second top portion with respect to a lower end of the second end portion, and H13 denotes a height of the third top portion with respect to a lower end of the third end portion, and in expression (5), W11 denotes a distance between the first end portion and the first top portion in a direction parallel to the substrate, W12 denotes a distance between the second end portion and the second top portion in a direction parallel to the substrate, and W13 denotes a distance between the third end portion and the third top portion in a direction parallel to the substrate. characterized in that ​ ​ ​ ​ ​ ​ ​ ​ 3. An organic light emitting device comprising subpixels arranged on a substrate, the subpixels comprising a first subpixel, a second subpixel, and a third subpixel, each of the first subpixel, the second subpixel, and the third subpixel comprising, in order from a side close to the substrate, a lower electrode, an insulating layer covering end portions of the lower electrode, an organic layer, and an upper electrode, at least a portion of the organic layer being continuously arranged in at least two of regions between a position on a first lower electrode included in the first subpixel and a position on a second lower electrode included in the second subpixel, between the position on the second lower electrode and a position on a third lower electrode included in the third subpixel, and between the position on the third lower electrode and the position on the first lower electrode, the insulating layer having at least one top portion in each of regions between a subpixel adjacent to the first subpixel and the first subpixel, between a subpixel adjacent to the second subpixel and the second subpixel, and between a subpixel adjacent to the third subpixel and the third subpixel, and provided that a portion of the insulating layer between a first end portion thereof and a first top portion thereof is referred to as a first portion, the first end portion being given by an end portion of the insulating layer on the first lower electrode, the first top portion being given by the top portion closest to the first end portion, provided that a portion of the insulating layer between a second end portion thereof and a second top portion thereof is referred to as a second portion, the second end portion being given by an end portion of the insulating layer on the second lower electrode, the second top portion being given by the top portion closest to the second end portion, provided that a portion of the insulating layer between a third end portion thereof and a third top portion thereof is referred to as a third portion, the third end portion being given by an end portion of the insulating layer on the third lower electrode, the third top portion being given by the top portion closest to the third end portion, each of the first portion, the second portion, and the third portion has at least one flat portion, and formula (1) and formula (7) given below are satisfied: λ1 > λ2 > λ3... (1) (H21 / W21) < (H22 / W22) < (H23 / W23)... (7) characterized in that ​ ​ ​ ​ ​ ​ ​ ​ In formula (1), λ1 represents a wavelength at which light emitted from the first sub-pixel has a maximum intensity, λ2 represents a wavelength at which light emitted from the second sub-pixel has a maximum intensity, and λ3 represents a wavelength at which light emitted from the third sub-pixel has a maximum intensity, in formula (7), H21 represents a height of an upper surface of a first flat portion of the first top portion with respect to a first flat portion of the flat portion that is closest to a first top portion of the first portion, H22 represents a height of an upper surface of a second flat portion of the second top portion with respect to a second flat portion of the flat portion that is closest to a second top portion of the second portion, and H23 represents a height of an upper surface of a third flat portion of the third top portion with respect to a third flat portion of the flat portion that is closest to a third top portion of the third portion, in formula (7), W21 represents a distance in a direction parallel to the substrate between an end of the first flat portion on a side close to the first top portion and the first top portion, W22 represents a distance in a direction parallel to the substrate between an end of the second flat portion on a side close to the second top portion and the second top portion, and W23 represents a distance in a direction parallel to the substrate between an end of the third flat portion on a side close to the third top portion and the third top portion.

4. The organic light emitting device according to any one of claims 1 to 3, wherein, Between the substrate and the lower electrode, the first sub-pixel, the second sub-pixel, and the third sub-pixel each further include, in order from a side close to the substrate, a reflective layer and an optical adjustment layer, and A thickness of the optical adjustment layer included in the first sub-pixel, a thickness of the optical adjustment layer included in the second sub-pixel, and a thickness of the optical adjustment layer included in the third sub-pixel are different from each other.

5. The organic light emitting device according to any one of claims 1 to 3, wherein, Light emitted from the first sub-pixel is red light, light emitted from the second sub-pixel is green light, and light emitted from the third sub-pixel is blue light.

6. The organic light emitting device according to any one of claims 1 to 3, wherein, The organic layer includes a light-emitting layer that is continuously disposed in at least two of regions between a position on a first lower electrode included in the first sub-pixel and a position on a second lower electrode included in the second sub-pixel, between a position on the second lower electrode and a position on a third lower electrode included in the third sub-pixel, and between a position on the third lower electrode and a position on the first lower electrode.

7. The organic light emitting device according to any one of claims 1 to 3, wherein, The first sub-pixel includes a first color filter on the upper electrode, The second sub-pixel includes a second color filter on the upper electrode, and The third sub-pixel includes a third color filter on the upper electrode.

8. The organic light emitting device according to any one of claims 1 to 3, wherein, The first sub-pixel, the second sub-pixel, and the third sub-pixel each include a microlens on the upper electrode.

9. An organic light emitting apparatus comprising subpixels arranged on a substrate, the subpixels including a first subpixel and a second subpixel, each of the first subpixel and the second subpixel including, in order from a side close to the substrate, a reflective layer, an optical adjustment layer, a lower electrode, an insulating layer covering end portions of the lower electrode, an organic layer, and an upper electrode, at least a portion of the organic layer being continuously arranged between a position on a first lower electrode included in the first subpixel and a position on a second lower electrode included in the second subpixel, a thickness of the optical adjustment layer included in the first subpixel and a thickness of the optical adjustment layer included in the second subpixel being different from each other, the insulating layer having at least one top portion in a region between a subpixel adjacent to the first subpixel and the first subpixel and in a region between a subpixel adjacent to the second subpixel and the second subpixel, and assuming that a portion of the insulating layer between a first end portion thereof and a first top portion thereof is referred to as a first portion, the first end portion being given by an end portion of the insulating layer on the first lower electrode, the first top portion being given by the top portion closest to the first end portion, and assuming that a portion of the insulating layer between a second end portion thereof and a second top portion thereof is referred to as a second portion, the second end portion being given by an end portion of the insulating layer on the second lower electrode, the second top portion being given by the top portion closest to the second end portion, formulae (3) and (4) given below are satisfied: λ1 > λ2... (3) θ1 < θ2... (4) in formula (3), λ1 denotes a wavelength at which light emitted from the first subpixel has a maximum intensity, and λ2 denotes a wavelength at which light emitted from the second subpixel has a maximum intensity, and in formula (4), θ1 denotes an inclination angle of the first portion with respect to the substrate, and θ2 denotes an inclination angle of the second portion with respect to the substrate. characterized in that 10. An organic light emitting apparatus comprising subpixels arranged on a substrate, the subpixels including a first subpixel and a second subpixel, each of the first subpixel and the second subpixel including, in order from a side close to the substrate, a reflective layer, an optical adjustment layer, a lower electrode, an insulating layer covering end portions of the lower electrode, an organic layer, and an upper electrode, at least a portion of the organic layer being continuously arranged between a position on a first lower electrode included in the first subpixel and a position on a second lower electrode included in the second subpixel, a thickness of the optical adjustment layer included in the first subpixel and a thickness of the optical adjustment layer included in the second subpixel being different from each other, the insulating layer having at least one top portion in a region between a subpixel adjacent to the first subpixel and the first subpixel and in a region between a subpixel adjacent to the second subpixel and the second subpixel, and assuming that a portion of the insulating layer between a first end portion thereof and a first top portion thereof is referred to as a first portion, the first end portion being given by an end portion of the insulating layer on the first lower electrode, the first top portion being given by the top portion closest to the first end portion, and assuming that a portion of the insulating layer between a second end portion thereof and a second top portion thereof is referred to as a second portion, the second end portion being given by an end portion of the insulating layer on the second lower electrode, the second top portion being given by the top portion closest to the second end portion, formulae (3) and (4) given below are satisfied: λ1 > λ2... (3) θ1 < θ2... (4) in formula (3), λ1 denotes a wavelength at which light emitted from the first subpixel has a maximum intensity, and λ2 denotes a wavelength at which light emitted from the second subpixel has a maximum intensity, and in formula (4), θ1 denotes an inclination angle of the first portion with respect to the substrate, and θ2 denotes an inclination angle of the second portion with respect to the substrate. ​ ​ ​ ​ ​ ​ ​ ​ characterized in that ​ ​ assuming that a portion of the insulating layer between a first end portion thereof and a first top portion is called a first portion, the first end portion being given by an end portion of the insulating layer on the first lower electrode, the first top portion being given by the top portion closest to the first end portion, assuming that a portion of the insulating layer between a second end portion thereof and a second top portion is called a second portion, the second end portion being given by an end portion of the insulating layer on the second lower electrode, the second top portion being given by the top portion closest to the second end portion, the following given formulae (3) and (6) are satisfied: λ1> λ2... (3) (H11 / W11)< (H12 / W12)... (6) In formula (3), λ1 denotes a wavelength at which light emitted from the first sub-pixel has a maximum intensity, and λ2 denotes a wavelength at which light emitted from the second sub-pixel has a maximum intensity, in formula (6), H11 denotes a height of the first top portion with respect to a lower end of the first end portion, and H12 denotes a height of the second top portion with respect to a lower end of the second end portion, in formula (6), W11 denotes a distance between the first end portion and the first top portion in a direction parallel to the substrate, and W12 denotes a distance between the second end portion and the second top portion in a direction parallel to the substrate.

11. An organic light emitting device comprising sub-pixels arranged on a substrate, the sub-pixels including a first sub-pixel and a second sub-pixel, each of the first sub-pixel and the second sub-pixel including, in order from a side close to the substrate, a reflective layer, an optical adjustment layer, a lower electrode, an insulating layer covering an end portion of the lower electrode, an organic layer, and an upper electrode, at least a portion of the organic layer being continuously arranged between a position on a first lower electrode included in the first sub-pixel and a position on a second lower electrode included in the second sub-pixel, characterized in that a thickness of the optical adjustment layer included in the first sub-pixel and a thickness of the optical adjustment layer included in the second sub-pixel are different from each other, the insulating layer has at least one top portion in regions between a sub-pixel adjacent to the first sub-pixel and the first sub-pixel and between a sub-pixel adjacent to the second sub-pixel and the second sub-pixel, and assuming that a portion of the insulating layer between a first end portion thereof and a first top portion is called a first portion, the first end portion being given by an end portion of the insulating layer on the first lower electrode, the first top portion being given by the top portion closest to the first end portion, and assuming that a portion of the insulating layer between a second end portion thereof and a second top portion is called a second portion, the second end portion being given by an end portion of the insulating layer on the second lower electrode, the second top portion being given by the top portion closest to the second end portion, the first portion and the second portion each have at least one flat portion, and the following given formulae (3) and (8) are satisfied: λ1> λ2... (3) (H21 / W21)< (H22 / W22)... (8) In Formula (3), λ1 represents a wavelength at which light emitted from the first sub-pixel has a maximum intensity, and λ2 represents a wavelength at which light emitted from the second sub-pixel has a maximum intensity, in Formula (8), H21 represents a height of an upper surface of a first flat portion of the flat portion that is a first top portion closest to the first portion with respect to the first top portion, and H22 represents a height of an upper surface of a second flat portion of the flat portion that is a second top portion closest to the second portion with respect to the second top portion, in Formula (8), W21 represents a distance in a direction parallel to the substrate between an end of the first flat portion on a side close to the first top portion and the first top portion, and W22 represents a distance in a direction parallel to the substrate between an end of the second flat portion on a side close to the second top portion and the second top portion.

12. The organic light emitting device according to any one of claims 9 to 11, wherein, The organic layer includes a light-emitting layer that is continuously disposed between a position on a first lower electrode included in the first sub-pixel and a position on a second lower electrode included in the second sub-pixel.

13. The organic light emitting device according to any one of claims 9 to 11, wherein, The first sub-pixel includes a first color filter on the upper electrode, and The second sub-pixel includes a second color filter on the upper electrode.

14. The organic light emitting device according to any one of claims 9 to 11, wherein, The first sub-pixel and the second sub-pixel each include a microlens on the upper electrode.

15. The organic light emitting device according to any one of claims 1 to 3 and 9 to 11, wherein, The organic layer emits white light.

16. A display device, characterized by The display device includes: The organic light-emitting device according to any one of claims 1 to 15; and a transistor connected to the sub-pixel.

17. A display device, characterized by The display device includes: an imaging device; and the organic light-emitting device according to any one of claims 1 to 15 as a display unit, wherein an image displayed on the display unit is controlled in accordance with information provided from the imaging device regarding a user's line of sight.

18. A photoelectric conversion device, comprising: an optical unit including a lens; an imaging element configured to receive light that has passed through the optical unit; and a display unit configured to display an image captured by the imaging element, characterized in that the display unit includes the organic light-emitting device according to any one of claims 1 to 15.

19. An electronic device, characterized in that The electronic device includes: a display unit including the organic light-emitting device according to any one of claims 1 to 15; a housing in which the display unit is arranged; and a communication unit arranged in the housing and configured to communicate with an outside.

20. An illumination device, characterized by The lighting device includes: a light source including the organic light-emitting device according to any one of claims 1 to 15; and a light diffuser or an optical film through which light emitted from the light source passes.

21. A mobile object, comprising: The moving object includes: a light fixture including the organic light-emitting device according to any one of claims 1 to 15; and a main body in which the light fixture is arranged.

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