Display device and electronic device

Abstract

To provide a display device with excellent viewing angle characteristics, and an electronic device equipped with such a display device. [Solution] The display device of the present invention comprises a substrate, a lens layer having a lens, a light-transmitting layer in contact with the lens surface of the lens and having light-transmitting properties, a pixel electrode arranged between the substrate and the lens layer, and a color filter arranged between the pixel electrode and the lens layer, wherein the lens is arranged corresponding to the pixel electrode, and the refractive index of the material constituting the lens is lower than the refractive index of the material constituting the light-transmitting layer.

Description

[Technical Field]

[0001] The present invention relates to a display device and an electronic device. [Background technology]

[0002] Display devices such as organic electroluminescence (EL) display devices that use organic EL elements are known. Patent Document 1 discloses an organic EL device that includes an organic EL element having a pixel electrode and a color filter that transmits light in a predetermined wavelength range. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-153607 Summary of the Invention [Problem to be solved by the invention]

[0004] For a display device equipped with a color filter such as that disclosed in Patent Document 1, it is desired to improve the viewing angle characteristics or widen the radiation angle. [Means for solving the problem]

[0005] One aspect of the display device of the present invention is a display device including a first pixel electrode, a common electrode, a first reflective layer provided on the side of the first pixel electrode opposite to the common electrode; a first element portion having a light-emitting layer provided between the first pixel electrode and the common electrode; a second pixel electrode; and the common electrode; a second reflective layer provided on the opposite side of the second pixel electrode from the common electrode; the light-emitting layer provided between the second pixel electrode and the common electrode, a second element portion adjacent to the first element portion, a substrate that transmits light emitted from the first element portion and the second element portion, a first coloring portion provided between the first element portion and the substrate and corresponding to the first pixel electrode, a second coloring portion provided between the second element portion and the substrate and corresponding to the second pixel electrode, and a second coloring portion provided between the first coloring portion and the substrate and corresponding to the first pixel electrode and a convex surface protruding toward the substrate.a first lens, a second coloring portion, and a second coloring portion provided between the first lens and the second coloring portion and the substrate, the second coloring portion corresponding to the second pixel electrode; and a convex surface protruding toward the substrate. a second lens and the first lens; lens and the substrate and the second lens and the substrate, and a light-transmitting layer provided in contact with a lens surface of the first lens and a lens surface of the second lens, wherein, in a plan view, a first distance between a center of a display area in which the first pixel electrode is provided and the first pixel electrode is different from a second distance between the center of the display area and a center of the first colored portion, a refractive index of the substrate is lower than a refractive index of the light-transmitting layer, a color of the first colored portion is different from a color of the second colored portion, a thickness of the first colored portion is greater than a thickness of the second colored portion, a distance between the substrate and the second colored portion in a normal direction of the substrate is greater than a distance between the substrate and the first colored portion, and 2nd reflective layer and the second colored portion, 1st reflective layer and the first colored portion. The refractive index of each of the materials constituting the first lens and the second lens is lower than the refractive index of the material constituting the light-transmitting layer. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 1 is a plan view showing a display device according to a first embodiment. [Figure 2] FIG. 2 is an equivalent circuit diagram of a sub-pixel according to the first embodiment. [Figure 3] FIG. 1 is a diagram showing a partial cross section of a display device according to a first embodiment. [Figure 4] FIG. 2 is a plan view showing a pixel electrode in the first embodiment. [Figure 5] FIG. 2 is a plan view showing a part of a color filter in the first embodiment. [Figure 6] FIG. 2 is a plan view showing a part of a lens layer in the first embodiment. [Figure 7] FIG. 2 is a diagram for explaining an optical path in the first embodiment. [Figure 8] 3 is a flow chart showing a method for manufacturing the display device according to the first embodiment. [Figure 9]FIG. 4 is a diagram illustrating a lens layer forming step in the first embodiment. [Figure 10] FIG. 4 is a diagram illustrating a lens layer forming step in the first embodiment. [Figure 11] FIG. 4 is a diagram illustrating a lens layer forming step in the first embodiment. [Figure 12] FIG. 4 is a diagram illustrating a lens layer forming step in the first embodiment. [Figure 13] FIG. 4 is a view for explaining a light-transmitting layer forming step in the first embodiment. [Figure 14] FIG. 10 is a diagram schematically illustrating a display device according to a second embodiment. [Figure 15] FIG. 10 is a diagram schematically illustrating a display device according to a third embodiment. [Figure 16] 10A to 10C are diagrams illustrating a method for manufacturing a display device according to a third embodiment. [Figure 17] FIG. 10 is a plan view showing a modified example of the pixel electrode and the lens. [Figure 18] 10A and 10B are cross-sectional views showing modified examples of the colored portion and the lens. [Figure 19] 10A and 10B are cross-sectional views showing modified examples of the colored portion and the lens. [Figure 20] FIG. 10 is a plan view showing a modified example of a color filter. [Figure 21] 10A and 10B are plan views showing modified examples of pixel electrodes, lenses, and colored portions. [Figure 22] 10A and 10B are plan views showing modified examples of pixel electrodes, lenses, and colored portions. [Figure 23] 10A and 10B are plan views showing modified examples of pixel electrodes, lenses, and colored portions. [Figure 24] 10A and 10B are plan views showing modified examples of pixel electrodes, lenses, and colored portions. [Figure 25] 10A to 10C are diagrams schematically showing modified examples of pixel electrodes, colored portions, and lenses. [Figure 26] 10A to 10C are diagrams schematically showing modified examples of pixel electrodes, colored portions, and lenses. [Figure 27] FIG. 2 is a diagram schematically illustrating a part of the internal structure of the virtual image display device. DETAILED DESCRIPTION OF THE INVENTION

[0007] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Note that the dimensions and scale of each part in the drawings may differ from those of the actual parts, and some parts are shown schematically to facilitate understanding. Furthermore, the scope of the present invention is not limited to these embodiments unless otherwise specified in the following description to the effect that the present invention is limited thereto.

[0008] 1. First embodiment 1A.Display device 100 FIG. 1 is a plan view showing a display device 100 according to the first embodiment. For ease of explanation, the following description will appropriately use the mutually orthogonal x-, y-, and z-axes shown in FIG. 1. An element substrate 1 of the display device 100, which will be described later, is parallel to the xy plane. Furthermore, "plan view" refers to viewing from the -z direction. The direction in which a light-transmitting substrate 9, which will be described later, and the element substrate 1 overlap is parallel to the -z direction. The thickness direction of the element substrate 1, which will be described later, is parallel to the -z direction. Furthermore, in the following description, light-transmitting refers to transparency to visible light, and preferably refers to a visible light transmittance of 50% or more.

[0009] The display device 100 is an organic EL (electroluminescence) display device that displays full-color images. The images include images that display only text information. The display device 100 has an element substrate 1 and a light-transmitting substrate 9 that is located on the +z-axis side of the element substrate 1. The display device 100 has a so-called top-emission structure. The display device 100 emits light from the light-transmitting substrate 9. The light-transmitting substrate 9 is a cover that protects the element substrate 1.

[0010] The element substrate 1 has a display area A10 that displays an image and a peripheral area A20 that surrounds the display area A10 in a planar view. The shape of the display area A10 in a planar view is rectangular, but is not limited to this and may be other polygonal shapes. The shape of the display area A10 in a planar view does not have to be a perfect rectangle, and may have rounded corners or may be partially missing. The element substrate 1 also has a plurality of pixels P, a data line driving circuit 101, a scanning line driving circuit 102, a control circuit 103, and a plurality of external terminals 104.

[0011] The display area A10 is composed of multiple pixels P. Each pixel P is the smallest unit for displaying an image. The pixels P are arranged in a matrix along the +x and +y directions. Each pixel P has a subpixel PB that emits light in the blue wavelength region, a subpixel PG that emits light in the green wavelength region, and a subpixel PR that emits light in the red wavelength region. The subpixels PB, PG, and PR each have an approximately rectangular shape in plan view. The subpixels PB, PG, and PR are aligned in the same color along the +x direction and aligned in the order of blue, green, and red along the +y direction. When the subpixels PB, PG, and PR are not distinguished, they are referred to as subpixel P0. The subpixel P0 is an element that constitutes a pixel P. The subpixel P0 is an example of a unit circuit, which is the smallest unit of an image to be displayed. The subpixels PB, PG, and PR together form one pixel of a color image. The subpixels P0 are controlled independently of each other.

[0012] A data line driving circuit 101, a scanning line driving circuit 102, a control circuit 103, and a plurality of external terminals 104 are arranged in the peripheral region A20 of the element substrate 1. The data line driving circuit 101 and the scanning line driving circuit 102 are peripheral circuits that control the driving of each part constituting the plurality of sub-pixels P0. The control circuit 103 controls the display of an image. Image data and the like are supplied to the control circuit 103 from a higher-level circuit (not shown). The control circuit 103 supplies various signals based on the image data to the data line driving circuit 101 and the scanning line driving circuit 102. An FPC (Flexible Printed Circuits) board or the like is connected to the external terminal 104 for electrical connection with a higher-level circuit (not shown). In addition, a power supply circuit (not shown) is electrically connected to the element substrate 1.

[0013] FIG. 2 is an equivalent circuit diagram of a sub-pixel P0 in the first embodiment. As shown in FIG. 2, scanning lines 13 and data lines 14 are provided on an element substrate 1. The scanning lines 13 extend along the +y direction. The data lines 14 extend along the +x direction. There are a plurality of scanning lines 13 and a plurality of data lines 14. The plurality of scanning lines 13 and the plurality of data lines 14 are arranged in a lattice pattern. The plurality of scanning lines 13 are connected to the scanning line driving circuit 102 shown in FIG. 1. The plurality of data lines 14 are connected to the data line driving circuit 101 shown in FIG. 1. A sub-pixel P0 is provided corresponding to each intersection of the plurality of scanning lines 13 and the plurality of data lines 14.

[0014] Each subpixel P0 includes an organic EL element 20 and a pixel circuit 30 that controls the driving of the organic EL element 20. The organic EL element 20 has a pixel electrode 23, a common electrode 25, and a functional layer 24 disposed therebetween. The pixel electrode 23 functions as an anode. The common electrode 25 functions as a cathode. In the organic EL element 20, holes supplied from the pixel electrode 23 and electrons supplied from the common electrode 25 recombine in the functional layer 24, causing the functional layer 24 to emit light. A power supply line 16 is electrically connected to the common electrode 25. A low power supply potential Vct is supplied to the power supply line 16 from a power supply circuit (not shown). A pixel electrode 23 is provided for each subpixel P0. The pixel electrodes 23 can be set independently of each other and different from each other. More specifically, the pixel electrodes 23 may be set to pass different currents or to receive different voltages.

[0015] The pixel circuit 30 includes a switching transistor 31, a driving transistor 32, and a storage capacitor 33. The gate of the switching transistor 31 is electrically connected to the scanning line 13. One of the source or drain of the switching transistor 31 is electrically connected to the data line 14, and the other is electrically connected to the gate of the driving transistor 32. One of the source or drain of the driving transistor 32 is electrically connected to a power supply line 15, and the other is electrically connected to the pixel electrode 23. A high-level power supply potential Vel is supplied to the power supply line 15 from a power supply circuit (not shown). One electrode of the storage capacitor 33 is connected to the gate of the driving transistor 32, and the other electrode is connected to the power supply line 15.

[0016] When the scanning line driving circuit 102 activates a scanning signal to select a scanning line 13, the switching transistor 31 provided in the selected sub-pixel P0 is turned on. Then, a data signal is supplied from the data line 14 to the driving transistor 32 corresponding to the selected scanning line 13. The driving transistor 32 supplies a current to the organic EL element 20 according to the potential of the supplied data signal, i.e., the potential difference between its gate and source. The organic EL element 20 then emits light at a brightness according to the magnitude of the current supplied from the driving transistor 32. Furthermore, when the scanning line driving circuit 102 deselects the scanning line 13 and turns off the switching transistor 31, the potential of the gate of the driving transistor 32 is held by the storage capacitor 33. Therefore, the organic EL element 20 can emit light even after the switching transistor 31 is turned off.

[0017] The configuration of the pixel circuit 30 is not limited to the illustrated configuration. For example, the pixel circuit 30 may further include a transistor that controls conduction between the pixel electrode 23 and the driving transistor 32.

[0018] FIG. 3 is a diagram showing a partial cross section of the display device 100 in the first embodiment, and corresponds to the cross section of the display device 100 taken along line AA in FIG.

[0019] As shown in FIG. 3 , the element substrate 1 includes a substrate 10, a reflective layer 21, an insulating layer 22, an element portion 2, a protective layer 4, a color filter 5, a lens layer 61, and a light-transmitting layer 62. The reflective layer 21 includes a plurality of reflective portions 210. The element portion 2 includes a plurality of pixel electrodes 23, a functional layer 24, and a common electrode 25. That is, the element portion 2 includes a plurality of organic EL elements 20 described above. The color filter 5 includes a plurality of colored portions 51. The lens layer 61 includes a plurality of lenses 610. The reflective layer 21, the insulating layer 22, the element portion 2, the protective layer 4, the color filter 5, the lens layer 61, and the light-transmitting layer 62 are arranged in this order from the substrate 10 toward the light-transmitting substrate 9.

[0020] Each subpixel P0 is provided with one reflective portion 210, one pixel electrode 23, one colored portion 51, and one lens 610. Hereinafter, the pixel electrode 23 provided in the subpixel PB will be referred to as the "pixel electrode 23B," the pixel electrode 23 provided in the subpixel PG as the "pixel electrode 23G," and the pixel electrode 23 provided in the subpixel PR as the "pixel electrode 23R." When there is no need to distinguish between the pixel electrodes 23B, 23G, and 23R, they will be referred to as the pixel electrodes 23. Similarly, the colored portion 51 provided in the subpixel PB will be referred to as the "colored portion 51B," the colored portion 51 provided in the subpixel PG as the "colored portion 51G," and the colored portion 51 provided in the subpixel PR as the "colored portion 51R." When there is no need to distinguish between the colored portions 51B, 51G, and 51R, they will be referred to as the colored portion 51. Below, each component of the display device 100 will be described in order.

[0021] The substrate 10 is a wiring substrate on which the pixel circuit 30 is formed, for example, on a base material made of a silicon substrate. The base material may be made of glass, resin, ceramic, or the like. In this embodiment, since the display device 100 is a top-emission type, the base material may or may not be light-transmitting. The switching transistor 31 and the driving transistor 32 of the pixel circuit 30 may each be a MOS transistor having an active layer, and the active layer may be made of a silicon substrate, for example. The switching transistor 31 and the driving transistor 32 of the pixel circuit 30 may be a thin-film transistor or a field-effect transistor. Examples of materials for the components and wiring of the pixel circuit 30 include conductive materials such as polysilicon, metal, metal silicide, and metal compound.

[0022] A reflective layer 21 having optical reflectivity is provided on the substrate 10. The reflective layer 21 has a plurality of reflective portions 210, which are arranged, for example, in a matrix in plan view. One reflective portion 210 is arranged corresponding to one pixel electrode 23. That is, the reflective portions 210 and the pixel electrodes 23 are arranged in a one-to-one relationship. Furthermore, each reflective portion 210 overlaps with the pixel electrode 23 in plan view. Each such reflective portion 210 reflects light generated in the light-emitting layer 240 of the functional layer 24. Therefore, each reflective portion 210 has optical reflectivity.

[0023] Examples of materials that can be used for the reflective layer 21 include metals such as Al (aluminum) and Ag (silver), and alloys of these metals. The reflective layer 21 may also function as wiring that is electrically connected to the pixel circuits 30.

[0024] An insulating layer 22 having insulating properties is disposed on the reflective layer 21. The insulating layer 22 has a first insulating film 221, a second insulating film 222, a third insulating film 223, and a fourth insulating film 224. The first insulating film 221 is disposed to cover the reflective layer 21. The first insulating film 221 is formed commonly across the sub-pixels PB, PG, and PR. The first insulating film 221 overlaps with the pixel electrodes 23B, 23G, and 23R in a planar view. A second insulating film 222 is disposed on the first insulating film 221. The second insulating film 222 overlaps with the pixel electrode 23R in a planar view, but does not overlap with the pixel electrodes 23B and 23G in a planar view. A third insulating film 223 is disposed to cover the second insulating film 222. The third insulating film 223 overlaps with the pixel electrodes 23R and 23G in a planar view, but does not overlap with the pixel electrode 23B in a planar view. The fourth insulating film 224 covers the outer edges of the pixel electrodes 23B, 23G, and 23R.

[0025] The insulating layer 22 adjusts the optical distance L0, which is the optical distance between the reflective section 210 and a common electrode 25 described below. The optical distance L0 differs for each emitted color. The optical distance L0 in the sub-pixel PB is set to correspond to light in the blue wavelength region. The optical distance L0 in the sub-pixel PG is set to correspond to light in the green wavelength region. The optical distance L0 in the sub-pixel PR is set to correspond to light in the red wavelength region. In this embodiment, the thickness of the insulating layer 22 differs between the sub-pixels PB, PG, and PR, and therefore the optical distance L0 differs for each emitted color.

[0026] Examples of materials constituting the layers constituting the insulating layer 22 include silicon-based inorganic materials such as silicon oxide and silicon nitride. The configuration of the insulating layer 22 is not limited to the configuration shown in Fig. 3. In Fig. 3, the third insulating film 223 is disposed on the second insulating film 222, but for example, the second insulating film 222 may be disposed on the third insulating film 223.

[0027] A plurality of pixel electrodes 23 are disposed on the insulating layer 22. The plurality of pixel electrodes 23 are disposed between the substrate 10 and a lens layer 61, which will be described later. The pixel electrodes 23 are translucent. Examples of materials for the pixel electrodes 23 include transparent conductive materials such as ITO (Indium Tin Oxide) and IZO (Indium Zinc Oxide). The plurality of pixel electrodes 23 are electrically insulated from one another by the insulating layer 22. The pixel electrode 23B is disposed on the surface of the first insulating film 221 on the +z-axis side. The pixel electrodes 23G and 23R are each disposed on the surface of the third insulating film 223 on the +z-axis side.

[0028] Fig. 4 is a plan view showing pixel electrodes 23B, 23G, and 23R in the first embodiment. The shape of each of pixel electrodes 23B, 23G, and 23R in a plan view is not particularly limited, but in the example shown in Fig. 4, it is substantially rectangular. The fourth insulating film 224 has an opening 245 overlapping with pixel electrode 23B in a plan view, an opening 246 overlapping with pixel electrode 23G in a plan view, and an opening 247 overlapping with pixel electrode 23R in a plan view. The openings 245, 246, and 247 are each a hole formed in the fourth insulating film 224.

[0029] As shown in FIG. 3, the portions of pixel electrodes 23B, 23G, and 23R excluding their outer edges are exposed and in contact with the functional layer 24. Therefore, the portion that substantially functions as pixel electrode 23B is the portion that overlaps with opening 245 in a plan view shown in FIG. 4. Similarly, the portion that substantially functions as pixel electrode 23G is the portion that overlaps with opening 246 in a plan view. The portion that substantially functions as pixel electrode 23R is the portion that overlaps with opening 247 in a plan view. The portions that overlap with openings 245, 246, and 247 are light-emitting portions that contribute to light emission. The portion of element unit 2 that overlaps with the light-emitting portion in a plan view is the light-emitting region that emits light.

[0030] In this embodiment, the planar areas of the multiple pixel electrodes 23 are equal to each other. The widths W2 of the multiple pixel electrodes 23 are also equal to each other. The width W2 is the length along the +y direction. The planar areas of the multiple pixel electrodes 23 may be different from each other. The widths W2 of the multiple pixel electrodes 23 may be different from each other.

[0031] The functional layer 24 is disposed in common to the subpixels PB, PG, and PR. The functional layer 24 includes a light-emitting layer 240 containing an organic light-emitting material. The organic light-emitting material is a light-emitting organic compound. In addition to the light-emitting layer 240, the functional layer 24 also includes, for example, a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer. The functional layer 24 includes the light-emitting layers 240 that emit blue, green, and red light, thereby achieving white light emission. The configuration of the functional layer 24 is not particularly limited to the configuration described above, and any known configuration can be applied.

[0032] A common electrode 25 is disposed on the functional layer 24. In other words, the common electrode 25 is disposed between the plurality of pixel electrodes 23 and a lens layer 61 (described later). The common electrode 25 is disposed in common to the sub-pixels PB, PG, and PR. The common electrode 25 has light reflectivity and light transmissivity. Examples of materials that can be used for the common electrode 25 include various metals, such as alloys containing Ag, such as MgAg.

[0033] The common electrode 25 resonates light generated in the light-emitting layer 240 with the reflective layer 21. The common electrode 25 and the reflective layer 21 form an optical resonant structure that can extract light of a desired resonant wavelength for each of the sub-pixels PB, PG, and PR. This optical resonant structure enables emission of light with enhanced brightness at the resonant wavelength corresponding to each emitted color. The resonant wavelength is determined by the optical distance L0 described above. If the peak wavelength of the spectrum of light in a predetermined wavelength range is λ0, the following relational expression [1] holds: Φ (radian) represents the sum of the phase shifts that occur during transmission and reflection between the reflective section 210 and the common electrode 25. {(2×L0) / λ0+Φ} / (2π)=m0 (m0 is an integer) [1]

[0034] The optical distance L0 is set so that the peak wavelength of light in the wavelength range to be extracted is λ0. By adjusting the optical distance L0 according to the light in the wavelength range to be extracted, the light in the specified wavelength range is amplified, and the intensity of the light can be increased and the spectrum of the light can be narrowed.

[0035] In this embodiment, as described above, the optical distance L0 is adjusted by varying the thickness of the insulating layer 22 for each of the subpixels PB, PG, and PR. However, for example, the optical distance L0 may also be adjusted by varying the thickness of the pixel electrode 23 for each of the subpixels PB, PG, and PR. The thickness of the insulating layer 22 is set in consideration of the refractive index of the constituent material of each layer that makes up the insulating layer 22.

[0036] A light-transmitting protective layer 4 is formed on the common electrode 25. The protective layer 4 protects the organic EL elements 20 and the like. The protective layer 4 may protect each organic EL element 20 from external moisture, oxygen, and the like. In other words, the protective layer 4 has gas barrier properties. This improves the reliability of the display device 100 compared to a display device not provided with the protective layer 4. The protective layer 4 includes a first layer 41, a second layer 42, and a third layer 43. The first layer 41, the second layer 42, and the third layer 43 are stacked in this order from the common electrode 25 in the +z direction.

[0037] Examples of materials constituting the first layer 41 and the third layer 43 include nitrogen-containing silicon-based inorganic materials such as silicon oxynitride and silicon nitride. When the first layer 41 is mainly made of a nitrogen-containing silicon-based inorganic material, the gas barrier properties of the first layer 41 can be improved compared to when the first layer 41 is mainly made of silicon oxide. The same applies to the third layer 43.

[0038] The second layer 42 may be made of a resin material such as epoxy resin. The unevenness of the +z-axis side surface of the first layer 41 is affected by the unevenness of the +z-axis side surface of the common electrode 25. Therefore, by providing the second layer 42 made of a resin material, the unevenness of the +z-axis side surface of the first layer 41 can be suitably reduced. This allows the +z-axis side surface of the protective layer 4 to be flat. The second layer 42 may also be made of an inorganic material, such as silicon oxide (e.g., silicon dioxide) or aluminum oxide. Having the second layer 42 made of such an inorganic material can repair defects, such as pinholes, that may occur in the first layer 41 during manufacturing. Therefore, it is particularly effective to prevent moisture and other contaminants from being transmitted from the atmosphere to the functional layer 24 through defects, such as pinholes, that may occur in the first layer 41.

[0039] The first layer 41, the second layer 42, and the third layer 43 may contain materials other than the above-mentioned constituent materials to the extent that the functionality of each layer is not impaired. Furthermore, the protective layer 4 is not limited to a configuration including the first layer 41, the second layer 42, and the third layer 43, and may further include layers other than these. Furthermore, any two or more of the first layer 41, the second layer 42, and the third layer 43 may be omitted.

[0040] A color filter 5 is disposed on the protective layer 4. In other words, the color filter 5 is disposed between the pixel electrode 23 and the lens layer 61. The color filter 5 selectively transmits light in a predetermined wavelength range. By providing the color filter 5, the color purity of the light emitted from the display device 100 can be improved compared to when the color filter 5 is not provided. The color filter 5 is made of a resin material, such as an acrylic photosensitive resin material containing a coloring material. The predetermined wavelength range through which light is selectively transmitted includes a peak wavelength λ0 determined by the optical distance L0.

[0041] The color filter 5 has a colored portion 51B that transmits light in the blue wavelength region, a colored portion 51G that transmits light in the green wavelength region, and a colored portion 51R that transmits light in the red wavelength region. The colored portion 51B blocks light in the green wavelength region and light in the red wavelength region, the colored portion 51G blocks light in the blue wavelength region and light in the red wavelength region, and the colored portion 51R blocks light in the blue wavelength region and light in the green wavelength region.

[0042] FIG. 5 is a plan view showing a portion of the color filter 5 in the first embodiment. The shape of the colored portion 51 in plan view is not particularly limited, but is rectangular in the example shown in FIG. 5. One colored portion 51 is arranged corresponding to one pixel electrode 23. That is, the colored portion 51 and the pixel electrode 23 are arranged in a one-to-one relationship. Furthermore, the colored portion 51 overlaps the corresponding pixel electrode 23 in plan view. Note that in this embodiment, the colored portion 51 overlaps the entire pixel electrode 23 in plan view, but may overlap only a portion of the pixel electrode 23 in plan view. Furthermore, the planar area of the colored portion 51 may be equal to or smaller than the planar area of the pixel electrode 23. Furthermore, the planar areas of the multiple colored portions 51 are equal to each other. Furthermore, the widths W5 of the multiple colored portions 51 are equal to each other. The width W5 is the length along the +y direction. Furthermore, the planar areas of the multiple colored portions 51 may be different from each other. The widths W5 of the multiple colored portions 51 may be different from each other. The colored portion 51 overlaps with the light-emitting region in a planar view. In other words, the colored portion 51 overlaps with any one of the openings 245, 246, and 247 in a planar view. The planar area of the colored portion 51 is larger than the planar area of the light-emitting portion of the pixel electrode 23. A part of the colored portion 51 may be disposed between the pixel electrode 23 and the lens layer 61.

[0043] As shown in FIG. 3, a light-transmitting lens layer 61 is disposed on the color filter 5. The lens layer 61 has a plurality of lenses 610. One lens 610 is provided for each sub-pixel P0. The lenses 610 protrude from the color filter 5 toward the light-transmitting substrate 9. The lenses 610 are microlenses having a lens surface 611. The lens surface 611 is convex. The lenses 610 may be so-called spherical lenses or so-called aspherical lenses.

[0044] The lenses 610 have the same height T6. The height T6 is the maximum length along the +z direction. The heights T6 of the lenses 610 may be different from each other.

[0045] FIG. 6 is a plan view showing a portion of the lens layer 61 in the first embodiment. The shape of the lenses 610 in plan view is not particularly limited, but in the example shown in FIG. 6, they are rectangular with rounded corners. The outer edges of two adjacent lenses 610 in plan view are connected. Each lens 610 is arranged corresponding to one pixel electrode 23. That is, the lenses 610 and the pixel electrodes 23 are arranged in a one-to-one relationship. The lenses 610 overlap with the pixel electrodes 23 in plan view. The planar area of the lenses 610 is approximately equal to the planar area of the pixel electrodes 23. However, the planar area of the lenses 610 is larger than the planar area of the light-emitting portion of the pixel electrodes 23. The widths W6 of the multiple lenses 610 are approximately equal. The width W6 is the length along the +y direction. Each lens 610 is arranged corresponding to a light-emitting region. The lenses 610 overlap with the light-emitting region in plan view. In other words, the lens 610 overlaps with any one of the openings 245, 246, and 247 in a plan view.

[0046] 3, the lenses 610 preferably overlap the corresponding colored portions 51 and pixel electrodes 23 in plan view. The overlap between the lenses 610 and the colored portions 51 may be partial. The overlap between the lenses 610 and the pixel electrodes 23 may be partial. The pixel electrode 23, colored portions 51, and lenses 610 provided in the subpixel are preferably arranged in a line in this order. Preferably, the pixel electrode 23, colored portions 51, and lenses 610 provided in the subpixel are arranged in a line.

[0047] In this embodiment, the lens 610 overlaps with almost the entire pixel electrode 23 in a plan view, but may overlap with only a part of the pixel electrode 23 in a plan view. The planar area of the lens 610 may be larger or smaller than the planar area of the pixel electrode 23. The widths W6 of the multiple lenses 610 may be different from one another.

[0048] Examples of materials that can be used to form the lens 610 include materials that are translucent and insulating. Specifically, examples of materials that can be used to form the lens 610 include silicon-based inorganic materials such as silicon oxide, and resin materials such as acrylic resin.

[0049] The refractive index of the material of the lens 610 is lower than the refractive index of the material of the later-described light-transmitting layer 62. Specifically, the refractive index of the material of the lens 610 is, for example, 1.3 or more and 1.6 or less for visible light with a wavelength of 550 nm.

[0050] 3, a light-transmitting layer 62 having light-transmitting and insulating properties is disposed on the lens layer 61. The light-transmitting layer 62 contacts a plurality of lens surfaces 611. The surface of the light-transmitting layer 62 that contacts the light-transmitting substrate 9 is flat.

[0051] The light-transmitting layer 62 may be made of a material that is transparent and insulating. Specifically, the light-transmitting layer 62 may be made of a resin material such as epoxy resin. By using a resin material, the light-transmitting layer 62 is formed so as to coat the lens surfaces 611, which makes it easy to flatten the surface of the light-transmitting layer 62 on the +z-axis side. The light-transmitting layer 62 may also be made of an inorganic silicon material such as aluminum oxide or silicon oxynitride.

[0052] The refractive index of the material of the light-transmitting layer 62 is higher than the refractive index of the material of the lens 610. For example, the refractive index of the material of the light-transmitting layer 62 is 1.5 or higher and 1.8 or lower for visible light with a wavelength of 550 nm. Furthermore, the refractive index of the material of the lens 610 is lower than the refractive index of the material of the light-transmitting layer 62, so although the lens surface 611 is convex, the lens 610 functions as a general concave lens. In other words, the lens 610 spreads the light emitted from the corresponding organic EL element 20. The spread of light will be described in detail later.

[0053] A light-transmitting substrate 9 having light-transmitting properties is disposed on the light-transmitting layer 62. When the light-transmitting layer 62 has adhesive properties, the light-transmitting substrate 9 is bonded to the element substrate 1 via the light-transmitting layer 62. When the light-transmitting layer 62 does not have adhesive properties, an adhesive member may be disposed between the light-transmitting layer 62 and the light-transmitting substrate 9.

[0054] In this embodiment, the refractive index of the material constituting the light-transmitting substrate 9 is lower than the refractive index of the material constituting the light-transmitting layer 62. The light-transmitting substrate 9 is formed, for example, from a glass substrate or a quartz substrate. The refractive index of the material constituting the light-transmitting substrate 9 is not particularly limited, but is, for example, 1.4 or more and 1.6 or less for visible light with a wavelength of 550 nm. The refractive index of the material constituting the light-transmitting substrate 9 may be higher than or equal to the refractive index of the material constituting the light-transmitting layer 62.

[0055] The above has described the configuration of the display device 100. Next, the optical path of the light emitted from the organic EL element 20 will be described.

[0056] Fig. 7 is a diagram illustrating the optical path in the first embodiment. As shown in Fig. 7, light emitted from the organic EL element 20 is emitted at a radiation angle θ when it exits the light-transmitting substrate 9 to the outside. Fig. 7 shows a luminous flux LL of light emitted from one point on the organic EL element 20 provided in one sub-pixel P0. The radiation angle θ is the solid angle of the luminous flux LL, and is the angle at which the light spreads around the chief ray A1, which is the peak of the light intensity.

[0057] As described above, the refractive index of the material of the lens 610 is lower than the refractive index of the material of the light-transmitting layer 62. Therefore, the refraction angle at the lens surface 611 is larger than the angle of incidence. Therefore, the light beam LL is refracted at the lens surface 611 and spreads outward more than the light beam LL0 indicated by the dashed line. Note that the light beam LL0 is a light beam obtained when the lens surface 611 is not provided and the lens layer 61 is made of the same material as the light-transmitting layer 62. Thus, by providing the lens layer 611 and the light-transmitting layer 62, the radiation angle θ of the subpixel P0 can be widened compared to when these elements are not provided. Furthermore, the refractive index of the external air is lower than the refractive index of the material of the light-transmitting substrate 9. Therefore, the light beam LL refracted at the lens surface 611 is refracted at the surface of the light-transmitting substrate 9 and spreads outward more than the light beam LL0. Therefore, the radiation angle θ can be further widened compared to when the light-transmitting substrate 9 is not provided.

[0058] As described above, the display device 100 includes the substrate 10, the lens layer 61, the light-transmitting layer 62, the pixel electrodes 23, and the color filter 5. The refractive index of the material of the lens 610 is lower than the refractive index of the material of the light-transmitting layer 62. One lens 610 is disposed corresponding to one pixel electrode 23. That is, one pixel electrode 23 and one lens 610 are provided for one sub-pixel P0. By providing a lens 610 for each sub-pixel P0, the radiation angle θ of light emitted from each sub-pixel P0 can be widened. This improves the viewing angle characteristics of the display device 100. That is, the range of viewing angles at which images can be viewed without image quality changes such as color shift can be widened.

[0059] Furthermore, the lens 610 is disposed on the +z-axis side of the color filter 5. This makes it possible to widen the radiation angle θ of light with high color purity that has passed through the color filter 5. This makes it possible to improve the viewing angle characteristics and image quality compared to when the lens 610 is disposed on the -z-axis side of the color filter 5.

[0060] In this embodiment, all of the sub-pixels P0 are provided with lenses 610. This provides the display device 100 with particularly excellent viewing angle characteristics. Note that some of the sub-pixels P0 may not be provided with lenses 610.

[0061] As described above, the lens surface 611 of the lens 610 is convex, but the refractive index of the material of the lens 610 is lower than the refractive index of the material of the light-transmitting layer 62. Therefore, as described above, the lens surface 611 can widen the light beam LL. Furthermore, since the lens 610 has a convex shape, it is easier to form the lens 610 than if it were concave. The method of forming the lens 610 will be described in detail later.

[0062] As described above, the color filter 5, the lens layer 61, the light-transmitting layer 62, and the light-transmitting substrate 9 are arranged in this order. By arranging them in this order, it is easy to form the convex lenses 610 on the color filter 5 when the layers are formed by stacking them from the substrate 10 side.

[0063] Furthermore, the lens layer 61 is in contact with the color filter 5. The surface of the lens layer 61 opposite to the lens surface 611 is in contact with the color filter 5. By having the lens layer 61 in contact with the color filter 5, light transmitted through the color filter 5 can be made to enter the lens 610 more efficiently than when other members are disposed between the lens layer 61 and the color filter 5. This makes it possible to increase the utilization efficiency of the light transmitted through the color filter 5. This makes it possible to display a bright image.

[0064] Note that other members may be disposed between the color filter 5, the lens layer 61, the light-transmitting layer 62, and the light-transmitting substrate 9. However, it is preferable that these are stacked. By stacking these members, it is possible to efficiently allow the light that has passed through the color filter 5 to enter the lens 610, and also to efficiently allow the light that has passed through the lens 610 to exit to the outside.

[0065] 6, it is preferable that the lens 610 overlaps the entire pixel electrode 23 in a plan view, and that the plane area of the lens 610 is larger than the plane area of the pixel electrode 23. With this configuration, light generated from the organic EL element 20 can be efficiently incident on the lens 610. Therefore, it is possible to realize a bright display device 100 with a wide radiation angle θ.

[0066] The display device 100 of this embodiment also includes an organic EL element 20. That is, the display device 100 includes a pixel electrode 23, a common electrode 25, and a light-emitting layer 240 disposed between the pixel electrode 23 and the common electrode 25. The display device 100 includes the organic EL element 20, thereby forming an organic EL display device. Therefore, the display device 100 can provide an organic EL display device with excellent viewing angle characteristics.

[0067] Furthermore, the display device 100 has an optical resonant structure. The provision of the optical resonant structure increases the intensity of light and narrows the spectrum of the light. Therefore, when the display device 100 having the optical resonant structure includes the lens layer 61 and the light-transmitting layer 62, the lens surface 611 particularly effectively widens the radiation angle θ, further improving the viewing angle characteristics.

[0068] 1B. Manufacturing method of display device 100 8 is a flow chart of a manufacturing method of the display device 100 according to the first embodiment. As shown in FIG. 8, the manufacturing method of the display device 100 includes an element substrate preparation step S11, an insulating layer formation step S12, an element portion formation step S13, a protective layer formation step S14, a color filter formation step S15, a lens layer formation step S16, and a light-transmitting layer formation step S17. By performing these steps in this order, the display device 100 is manufactured.

[0069] In the element substrate preparation step S11, the aforementioned substrate 10 and reflective layer 21 are formed. In the insulating layer formation step S12, the insulating layer 22 is formed. In the element portion formation step S13, the element portion 2 is formed on the insulating layer 22. That is, a plurality of organic EL elements 20 are formed. In addition, in the protective layer formation step S14, the protective layer 4 is formed. In the color filter formation step S15, the color filter 5 is formed. The element substrate 1, reflective layer 21, element portion 2, protective layer 4, and color filter 5 are formed by known techniques.

[0070] 9, 10, 11, and 12 are diagrams illustrating the lens layer forming step S16 in the first embodiment. First, as shown in FIG. 9, a lens material layer 61a is formed by depositing a lens-forming composition on a color filter 5. The lens-forming composition is, for example, a silicon-based inorganic material such as silicon oxide, or a resin material such as an acrylic resin. The lens material layer 61a is formed, for example, by a CVD method. Next, a mask M1 is formed on the lens material layer 61a. The mask M1 has a plurality of pattern portions M11. Each pattern portion M11 corresponds to a position where a lens 610 is to be formed. The mask M1 is formed, for example, using a positive photosensitive resist, in which exposed portions are removed by development. The plurality of pattern portions M11 are formed by patterning using a photolithography technique.

[0071] Next, the mask M1 is subjected to a heating process such as a reflow process, thereby melting the mask M1. When melted, the mask M1 becomes fluid, and the surface is deformed into a curved shape due to the action of surface tension. As a result of this deformation, multiple convex portions M12 are formed on the lens material layer 61a, as shown in FIG. 10. One convex portion M12 is formed from one pattern portion M11. The shape of the convex portion M12 is approximately hemispherical.

[0072] Next, the convex portions M12 and the lens material layer 61a are subjected to anisotropic etching, such as dry etching. This removes the convex portions M12, and as the convex portions M12 are removed, the exposed portions of the lens material layer 61a are etched. As a result, the shape of the convex portions M12 is transferred to the lens material layer 61a, and multiple lens convex portions 611a are formed, as shown in FIG. 11. Next, the lens material layer 61a, i.e., the same material as the lens convex portions 611a, is deposited on the lens convex portions 611a using, for example, a CVD method. As a result, lens coatings 612a are formed on the multiple lens convex portions 611a, as shown in FIG. 12. Thus, a lens layer 61 composed of the multiple lens convex portions 611a and the lens coatings 612a is formed.

[0073] The method for processing the shape of the convex portion M12 from the mask M1 may be, for example, a method of exposure using a grayscale mask or the like, a multi-step exposure method, etc. Although a mask is used in the above, the lens 610 may be formed directly from a resin material such as an acrylic resin using photolithography technology.

[0074] Fig. 13 is a diagram illustrating the light-transmitting layer-forming step S17 in the first embodiment. As shown in Fig. 13, in the light-transmitting layer-forming step S17, a light-transmitting layer-forming composition is deposited on a lens layer 61 to form a light-transmitting layer 62. The light-transmitting layer-forming composition has a refractive index higher than that of the lens-forming composition described above.

[0075] For example, when the light-transmitting layer-forming composition is an adhesive, the light-transmitting layer-forming composition is deposited on the lens layer 61. Then, the light-transmitting substrate 9 is pressed onto the deposited light-transmitting layer-forming composition, and the light-transmitting layer-forming composition is cured. According to this method, the light-transmitting layer 62 is formed, and the light-transmitting substrate 9 is bonded to the element substrate 1. Note that, when the light-transmitting layer 62 does not have adhesive properties, an adhesive layer is provided between the light-transmitting layer 62 and the light-transmitting substrate 9 to bond them together.

[0076] According to the above method, the display device 100 can be formed easily and quickly. Furthermore, since the lens 610 has a convex shape, it is easy to form the lens 610 using photolithography technology or the like, as described above. Therefore, compared to when the lens 610 has a concave shape, the lens layer 61 can be formed more easily and with higher precision. Furthermore, even when the lens layer 61 is made of an inorganic material, it is easy to form the convex lens 610 using photolithography technology or the like. Furthermore, since the lens layer 61 is formed on the color filter 5, it is particularly easy to align the colored portion 51 and the lens 610.

[0077] 2. Second embodiment Next, a second embodiment of the present invention will be described. Fig. 14 is a diagram schematically showing a display device 100a in the second embodiment. This embodiment differs from the first embodiment in that the colored portions 51B, 51G, and 51R have different thicknesses and that a planarization layer 7 is provided. Note that, for matters similar to those in the first embodiment, the reference numerals used in the description of the first embodiment are used and detailed descriptions of each will be omitted as appropriate.

[0078] In the display device 100a shown in FIG. 14, the colored portions 51B, 51G, and 51R have different thicknesses. For example, the thicknesses are adjusted to obtain appropriate chromaticity. Here, the colored portions 51B, 51G, and 51R, which have different thicknesses, are formed on the protective layer 4 having a flat surface, causing the surface on the +z-axis side of the color filter 5a to have irregularities. This makes it difficult to form a lens layer 61 on the surface on the +z-axis side of the color filter 5a. Therefore, in the display device 100a of this embodiment, a light-transmitting planarization layer 7 is disposed on the color filter 5a. In other words, the planarization layer 7 is disposed between the color filter 5a and the lens layer 61.

[0079] The surface of the planarization layer 7 on the +z-axis side is a flat surface 71. The flat surface 71 contacts the lens layer 61. The planarization layer 7 reduces the unevenness of the color filter 5. Therefore, by having the planarization layer 7, the lenses 610 can be formed on the flat surface 71. Therefore, the lens layer 61 can be formed without being affected by the unevenness on the surface on the +z-axis side of the color filter 5a.

[0080] The planarizing layer 7 is formed, for example, of an inorganic layer made of an inorganic material, an organic layer made of an organic material, or a laminate of an inorganic layer and an organic layer.

[0081] 3. Third embodiment Next, a third embodiment of the present invention will be described. Fig. 15 is a diagram schematically showing a display device 100b in the third embodiment. Fig. 16 is a diagram for explaining a manufacturing method of the display device 100b in the third embodiment. This embodiment differs from the first embodiment in that the arrangement of the lens layer 61 and the light-transmitting layer 62 is different. Note that, for matters in the third embodiment that are similar to those in the first embodiment, the symbols used in the description of the first embodiment will be used and detailed descriptions of each will be omitted as appropriate.

[0082] In the display device 100b shown in FIG. 15, the light-transmitting layer 62 and the lens layer 61 are arranged in this order from the color filter 5 toward the light-transmitting substrate 9. That is, the color filter 5, the light-transmitting layer 62, the lens layer 61, and the light-transmitting substrate 9 are arranged in this order. The lenses 610 protrude from the light-transmitting substrate 9 toward the color filter 5. Therefore, the lens surfaces 611 are convex surfaces that protrude toward the color filter 5. Also, in the present embodiment, as in the first embodiment, the refractive index of the constituent material of the lenses 610 is lower than the refractive index of the constituent material of the light-transmitting layer 62.

[0083] 15, the lens surface 611 can widen the light flux LL. Therefore, in this embodiment, as in the first embodiment, the presence of the lens layer 61 and the light-transmitting layer 62 can widen the radiation angle θ at the sub-pixel P0 compared to when these layers are not present. Furthermore, the presence of the light-transmitting substrate 9 can further widen the radiation angle θ.

[0084] In manufacturing the display device 100b, as shown in FIG. 16, a lens layer 61 is formed on a light-transmitting substrate 9. The lens layer 61 is formed using a method similar to that described in the first embodiment. Then, a deposition layer 62a made of a light-transmitting layer-forming composition is formed on the lens layer 61. The light-transmitting substrate 9 is then moved in the direction of arrow A9, thereby pressing the deposition layer 62a against the color filter 5. Then, while pressed, the deposition layer 62a is hardened. The light-transmitting layer 62 is bonded to the color filter 5 by hardening the deposition layer 62a. If the light-transmitting layer 62 does not have adhesive properties, an adhesive layer is provided between the light-transmitting layer 62 and the color filter 5 to bond them together.

[0085] According to this method, by forming the lens layer 61 on the surface of the light-transmitting substrate 9, it is possible to easily and accurately form the convex lenses 610 on the light-transmitting substrate 9 using a photolithography technique or the like. Furthermore, since the lens layer 61 is formed on the light-transmitting substrate 9, the influence of heat and the like on the organic EL elements 20 is reduced even if the organic EL elements 20 have poor heat resistance.

[0086] 4. Variations The above-described embodiments can be modified in various ways. Specific modifications that can be applied to the above-described embodiments are exemplified below. Two or more embodiments arbitrarily selected from the following examples can be combined as appropriate within the scope of not mutually contradictory.

[0087] 4-1. First modified example In each of the above-described embodiments, the organic EL elements 20 have an optical resonance structure with a different resonance length for each color, but the organic EL elements 20 may not necessarily have an optical resonance structure. The element section 2 may have, for example, a partition wall that separates the functional layer 24 into individual organic EL elements 20. The pixel electrode 23 may also be optically reflective. In this case, the reflective layer 21 may be omitted. The common electrode 25 is shared by multiple organic EL elements 20, but an individual cathode may be provided for each organic EL element 20.

[0088] 4-2. Second modified example A so-called black matrix having light-blocking properties may be disposed between the lenses 610. By disposing the black matrix, it is possible to suppress or prevent light that has passed through a colored portion 51 provided in a certain subpixel P0 from entering the lens 610 provided in the subpixel P0 adjacent to that subpixel P0. Furthermore, in order to prevent color mixture between adjacent colored portions 51, a black matrix may be disposed between the colored portions 51.

[0089] 4-3.Third Modification The shapes of the pixel electrode 23, the lens 610, and the color filter 5 in plan view are not limited to those in the above-described embodiments. FIG. 17 is a diagram illustrating a modified example of the pixel electrode 23 and the lens 610. The shapes of the pixel electrode 23 and the lens 610 illustrated in FIG. 17 may be rectangular in plan view. The length along the +x direction and the length along the +y direction may be different. FIG. 18 is a diagram illustrating a modified example of the colored portion 51 and the lens 610, and is a cross-sectional view taken along line BB in FIG. 17. FIG. 19 is a diagram illustrating a modified example of the colored portion 51 and the lens 610, and is a cross-sectional view taken along line CC in FIG. 17. As illustrated in FIGS. 18 and 19, the shape of the lens 610 in plan view is appropriately set to match the shape of the light-emitting portion in plan view. Therefore, the shape of the lens 610 in plan view may correspond to the shape of the pixel electrode 23 in plan view illustrated in FIG. 17. The same applies to the shape of the colored portion 51. Furthermore, as illustrated in FIGS. 18 and 19, adjacent lenses 610 may be spaced apart.

[0090] FIG. 20 is a plan view showing a modified example of the color filter 5. As shown in FIG. 20, the colored portions 51 may be arranged corresponding to multiple pixel electrodes 23. Specifically, the colored portion 51B overlaps multiple pixel electrodes 23B corresponding to blue. The colored portion 51G overlaps multiple pixel electrodes 23G corresponding to green. The colored portion 51R overlaps multiple pixel electrodes 23R corresponding to red. In the example shown in FIG. 20, the colored portions 51B, 51G, and 51R are arranged in a striped pattern. The colored portions 51B, 51G, and 51R may also overlap each other in a planar view. In FIG. 20, the colored portion 51B has an overlapping portion 519B that overlaps the colored portion 51G in a planar view. The colored portion 51G has an overlapping portion 519G that overlaps the colored portion 51R in a planar view.

[0091] 21, 22, 23, and 24 are plan views showing modified examples of the pixel electrode 23, the lens 610, and the colored portion 51, respectively. 21, 22, and 23 show the pixel electrode 23, the lens 610, and the colored portion 51 of one pixel P. In FIG. 24, the portion surrounded by a thick line corresponds to one pixel P.

[0092] As shown in Fig. 21 , the shapes of the plurality of pixel electrodes 23 in plan view may be different from one another. The shapes of the lenses 610 and the colored portions 51 in plan view may match the shapes of the light-emitting portions. Therefore, the shapes of the lenses 610 and the colored portions 51 in plan view may correspond to the shapes of the pixel electrodes 23 in plan view. Therefore, as shown in Fig. 21 , the shapes of the plurality of lenses 610 in plan view may be different from one another. The shapes of the plurality of colored portions 51 in plan view may be different from one another.

[0093] 22, the coloring portions 51B, 51G, and 51R may be arranged in a so-called rectangular array. The coloring portions 51B, 51G, and 51R do not have to be aligned in the +y direction. As shown in FIG. 22, the pixel electrodes 23 and the lenses 610 are arranged in accordance with the array of the coloring portions 51.

[0094] 23, the coloring portions 51B, 51G, and 51R may be arranged in a so-called Bayer array. One pixel P may have a plurality of coloring portions 51 of the same color. In FIG. 22, one pixel P has two coloring portions 51B.

[0095] 24, the colored portions 51B, 51G, and 51R may be arranged in a so-called delta arrangement. The shape of one pixel P in plan view does not have to be rectangular. The shapes of the pixel electrode 23, the lens 610, and the colored portions 51 in plan view are also not limited to rectangular, and may be, for example, polygonal other than rectangular, such as a hexagon, or may be circular.

[0096] 4-4.Fourth Modification In a plan view, the lenses 610 and a portion of the colored portions 51 may not overlap the corresponding pixel electrodes 23. For example, the lenses 610 and the colored portions 51 may be arranged shifted from the corresponding pixel electrodes 23 toward the center of the display region A10 or to the outside of the display device A10 in a plan view.

[0097] 25 and 26 are schematic diagrams showing modified examples of the pixel electrode 23, the colored portion 51, and the lens 610, respectively. By disposing the colored portion 51 so as to be offset from the pixel electrode 23 in a planar view, as shown in FIG. 25 or 26, the chief ray A1 can be inclined with respect to the normal line a1 of the pixel electrode 23. This makes it possible to increase the inclination angle θa of the chief ray A1. The inclination angle θa is the angle between the normal line a1 of the pixel electrode 23 and the chief ray A1. Furthermore, the lens 610 allows the light beam LL to be broader than the light beam LL0.

[0098] When the coloring portion 51 is arranged so as to be shifted to the outside of the display region A10 by the pixel electrode 23, the chief ray A1 can be tilted outward with respect to the normal line a1. This arrangement can further improve the viewing angle characteristics. On the other hand, when the coloring portion 51 is arranged so as to be shifted to the center of the display region A10 by the pixel electrode 23, the chief ray A1 can be tilted toward the center with respect to the normal line a1. This arrangement can suppress degradation of image quality, such as color unevenness, of the display device 100.

[0099] 5.Electronic equipment The display device 100 of the above-described embodiment can be applied to various electronic devices.

[0100] 5A. Virtual Image Display Device 900 Fig. 27 is a diagram schematically showing a part of the internal structure of a virtual image display device 900, which is an example of an electronic device of the present invention. The virtual image display device 900 shown in Fig. 27 is an HMD (head-mounted display) that is worn on a person's head to display images. The virtual image display device 900 includes the above-described display device 100 and an eyepiece 90. An image displayed on the display device 100 is emitted as image light L. In Fig. 27, light that enters the eye EY is illustrated as the image light L.

[0101] Image light L emitted from display device 100 is magnified by eyepiece 90, which is a condenser lens. Then, the image light L magnified by eyepiece 90 is guided to the human eye EY, allowing the human to see a virtual image formed by the image light L. Note that various other lenses, light guide plates, etc. may be provided between eyepiece 90 and the eye EY.

[0102] In order to obtain a large virtual image in the virtual image display device 900, the angle of view θ1 needs to be increased. To increase the angle of view θ1, the eyepiece 90 needs to be large. To increase the angle of view θ1 using the display device 100 that has a smaller planar area than the planar area of the eyepiece 90, the angle a that extends outward with respect to the normal a1 to the surface of the pixel electrode 23 needs to be increased.

[0103] The virtual image display device 900 includes the display device 100 described above. The display device 100 can widen the radiation angle θ for each subpixel P0. Therefore, the angle a can be made larger than in conventional devices. Therefore, even if a display device 100 having a smaller planar area than the eyepiece 90 is used, the angle of view θ1 can be widened. Therefore, even if a display device 100 smaller than conventional devices is used, a human can view a virtual image of the same size as when using conventional devices. In other words, a larger virtual image can be formed using a display device 100 smaller than conventional devices. By using such a display device 100, the virtual image display device 900 can be made smaller.

[0104] Furthermore, by widening the radiation angle θ of each subpixel P0, the range of light emitted from each subpixel P0 that reaches the eye EY is widened. Therefore, the range over which the light beams LL emitted from each subpixel P0 overlap is widened. This widens the allowable range of the eye EY position at which a virtual image can be viewed. Therefore, it is possible to appropriately accommodate individual differences, such as those of people with a narrow distance between their eyes, people with a wide distance between their eyes, people with large eyes EY, and people with small eyes EY.

[0105] Examples of the "electronic device" equipped with the display device 100 include the virtual image display device 900 illustrated in Fig. 27, as well as devices with eyepieces such as electronic viewfinders and electronic binoculars. Examples of the "electronic device" include devices such as personal computers, smartphones, and digital cameras that are equipped with the display device 100 as a display unit.

[0106] Although the present invention has been described above based on the illustrated embodiments, the present invention is not limited to these. Furthermore, the configuration of each part of the present invention can be replaced with any configuration that exhibits the same function as the above-described embodiments, and any configuration can be added. Furthermore, the present invention may be realized by combining any configuration of the above-described embodiments.

[0107] The "display device" is not limited to an organic EL display device, but may be an EL display device using inorganic materials, a liquid crystal display device having liquid crystal, or a device having an LED array.

[0108] The "display device" is not limited to a device that displays a full-color image, but may be a device that displays a monochrome image. For example, the "display device" may be a device that displays an image that is expressed in green, or a device that displays an image that is expressed in orange.

[0109] The light-emitting portion of the pixel electrode 23 that is in contact with the functional layer 24 may be considered as the "pixel electrode." [Explanation of symbols]

[0110] 1...element substrate, 2...element portion, 4...protective layer, 5...color filter, 7...planarization layer, 9...light-transmitting substrate, 10...substrate, 13...scanning line, 14...data line, 15...power supply line, 16...power supply line, 20...organic EL element, 21...reflective layer, 22...insulating layer, 23...pixel electrode, 23B...pixel electrode, 23G...pixel electrode, 23R...pixel electrode, 24...functional layer, 25...common electrode, 3 0...pixel circuit, 31...switching transistor, 32...driving transistor, 33...storage capacitor, 41...first layer, 42...second layer, 43...third layer, 51...colored portion, 51B...colored portion, 51G...colored portion, 51R...colored portion, 61...lens layer, 61a...lens material layer, 62...light-transmitting layer, 62a...deposition layer, 71...flat surface, 90...eyepiece lens, 100...display device device, 100a...display device, 100b...display device, 101...data line driving circuit, 102...scanning line driving circuit, 103...control circuit, 104...external terminal, 210...reflecting portion, 221...first insulating film, 222...second insulating film, 223...third insulating film, 224...fourth insulating film, 240...light emitting layer, 245...opening, 246...opening, 247...opening, 610...lens, 611...lens surface, 611a...lens convex portion, 612a...lens coating, 900...virtual image display device, A1...chief ray, A10...display area, A20...peripheral area, EY...eye, L...image light, L0...optical distance, LL...light flux, LL0...light flux, M1...mask, M11...pattern portion, M12...convex portion, P...pixel, P0...subpixel, PB...subpixel, PG...subpixel, PR...subpixel.

Claims

1. a first element portion including a first pixel electrode, a common electrode, a first reflective layer provided on the side of the first pixel electrode opposite to the common electrode, and a light-emitting layer provided between the first pixel electrode and the common electrode; a second element portion adjacent to the first element portion, the second element portion including: a second pixel electrode; the common electrode; a second reflective layer provided on the side of the second pixel electrode opposite to the common electrode; and the light-emitting layer provided between the second pixel electrode and the common electrode; a substrate that transmits light emitted from the first element portion and the second element portion; a first coloring section provided between the first element section and the substrate and corresponding to the first pixel electrode; a second coloring section provided between the second element section and the substrate and corresponding to the second pixel electrode; a first lens having a convex shape that is provided between the first coloring portion and the substrate, corresponds to the first pixel electrode, and protrudes toward the substrate; a convex second lens provided between the second colored portion and the substrate, corresponding to the second pixel electrode, and protruding toward the substrate; a light-transmitting layer provided between the first lens and the substrate and between the second lens and the substrate, and provided in contact with a lens surface of the first lens and a lens surface of the second lens; Equipped with a first distance between a center of a display region in which the first pixel electrode is provided and the first pixel electrode is different from a second distance between the center of the display region and a center of the first coloring portion, in a plan view; the refractive index of the substrate is lower than the refractive index of the light-transmitting layer; The color of the first colored portion is different from the color of the second colored portion, The thickness of the first colored portion is greater than the thickness of the second colored portion, a distance between the substrate and the second coloring portion in a normal direction of the substrate is greater than a distance between the substrate and the first coloring portion; a distance between the second reflective layer and the second colored portion in a normal direction of the substrate is the same as a distance between the first reflective layer and the first colored portion; the refractive index of each of the constituent materials of the first lens and the second lens is lower than the refractive index of the constituent material of the light-transmitting layer; A display device characterized by:

2. The second distance is greater than the first distance.

2. The display device according to claim 1.

3. a planarization layer provided between the first lens and the first colored portion and in contact with the first lens and the first colored portion; a surface of the first lens opposite to the lens surface contacts the substantially flat surface of the planarization layer; 3. The display device according to claim 1, wherein the first and second electrodes are electrically connected to each other.

4. In a plan view, the area of the first lens is larger than the area of the first pixel electrode.

4. The display device according to claim 1, wherein the first and second electrodes are electrically connected to each other.

5. The distance between the first reflective layer and the common electrode is an optical distance that resonates light in the same wavelength range as the wavelength range selectively transmitted by the first coloring portion.

5. The display device according to claim 1, wherein the first and second electrodes are electrically connected to each other.

6. a third lens corresponding to a third pixel electrode adjacent to the first pixel electrode; the first lens corresponding to the first pixel electrode and the third lens corresponding to the adjacent third pixel electrode are connected at their outer edges; 6. The display device according to claim 1, wherein the display device is a display device having a plurality of display areas.

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

Images