Display device and electronic apparatus

Abstract

To provide a display device capable of improving a color purity.SOLUTION: A display device includes: a first coloring layer that is provided to the side opposite to a first light emission element of a sealing layer, and to which a light from the first light emission element passes; and a second coloring layer that is provided to the side opposite to a second light emission element of the sealing layer, and passes the light from the second light emission element. The first coloring layer includes: a first flat surface that is opposite to the sealing layer; a first side surface that is contacted to the second coloring layer; and a first connection surface that is inclined to the first flat surface, connects the first flat surface and the first side surface, and is separated from the second coloring layer. The second coloring layer includes: a second flat surface that is opposite to the sealing layer; a second side surface that is contacted to the first side surface; and a second connection surface that is inclined to the second flat surface, connects the second flat surface and the second side surface, and is separated from the first coloring layer. The contact part of the first side surface and the second side surface is contacted to the sealing layer.SELECTED DRAWING: Figure 5

Description

[Technical field]

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

[0002] 2. Description of the Related Art Display devices having light-emitting elements such as organic EL (electroluminescence) elements are known.

[0003] For example, Patent Document 1 describes an electro-optical device having a substrate, a first light-emitting element and a second light-emitting element, a sealing layer arranged on the first light-emitting element and the second light-emitting element, a first colored portion that transmits light from the first light-emitting element, a second colored portion that transmits light from the second light-emitting element, and a wall portion that is in contact with the sealing layer and is provided between the first colored layer and the second colored layer. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2022-26073 Summary of the Invention [Problem to be solved by the invention]

[0005] In the electro-optical device described above, it is desirable to improve the color purity. [Means for solving the problem]

[0006] One aspect of the display device according to the present invention is A substrate; a first light emitting element and a second light emitting element provided on the substrate; a sealing layer covering the first light emitting element and the second light emitting element; a first colored layer provided on the opposite side of the sealing layer to the first light emitting element, through which light from the first light emitting element passes; a second colored layer provided on the opposite side of the sealing layer to the second light emitting element, through which light from the second light emitting element passes; having The first colored layer is a first flat surface opposite the sealing layer; a first side surface in contact with the second colored layer; a first connection surface that is inclined with respect to the first flat surface, connects the first flat surface and the first side surface, and is spaced apart from the second colored layer; having The second colored layer is a second flat surface opposite the sealing layer; and a second side surface in contact with the first side surface; a second connection surface inclined with respect to the second flat surface, connecting the second flat surface and the second side surface, and spaced apart from the first colored layer; having A contact portion between the first side surface and the second side surface is in contact with the sealing layer.

[0007] One aspect of the electronic device according to the present invention is The display device has one aspect of the above. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view illustrating a display device according to an embodiment of the present invention. [Diagram 2] FIG. 4 is an equivalent circuit diagram of a sub-pixel of the display device according to the embodiment. [Diagram 3] FIG. 1 is a plan view illustrating a display device according to an embodiment of the present invention. [Figure 4] FIG. 1 is a cross-sectional view illustrating a display device according to an embodiment of the present invention. [Diagram 5] FIG. 1 is a cross-sectional view illustrating a display device according to an embodiment of the present invention. [Figure 6] FIG. 1 is a cross-sectional view illustrating a display device according to an embodiment of the present invention. [Figure 7] FIG. 1 is a cross-sectional view illustrating a display device according to a reference example. [Figure 8] 5A to 5C are cross-sectional views each showing a manufacturing process of the display device according to the embodiment. [Figure 9] 5A to 5C are cross-sectional views each showing a manufacturing process of the display device according to the embodiment. [Figure 10] 5A to 5C are cross-sectional views each showing a manufacturing process of the display device according to the embodiment. [Figure 11] 5A to 5C are cross-sectional views each showing a manufacturing process of the display device according to the embodiment. [Figure 12] 5A to 5C are cross-sectional views each showing a manufacturing process of the display device according to the embodiment. [Figure 13] 5A to 5C are cross-sectional views each showing a manufacturing process of the display device according to the embodiment. [Figure 14] FIG. 11 is a cross-sectional view illustrating a display device according to a first modified example of the embodiment. [Figure 15] FIG. 11 is a cross-sectional view illustrating a display device according to a second modified example of the embodiment. [Figure 16] FIG. 11 is a cross-sectional view illustrating a display device according to a third modified example of the embodiment. [Figure 17] FIG. 11 is a plan view diagrammatically illustrating a display device according to a fourth modified example of the embodiment. [Figure 18] FIG. 1 is a perspective view showing a schematic diagram of a head mounted display according to an embodiment of the present invention. [Figure 19] FIG. 2 is a diagram illustrating an image forming device and a light guiding device of the head mounted display according to the embodiment. [Figure 20] 1 is a table showing light extraction efficiency in Example 1 and Comparative Example 1. [Figure 21] 1 is a table showing the measurement results of color gamuts in Example 1 and Comparative Example 1. [Figure 22] 4 is a CIE1931 color space showing the measurement results of color gamuts in Example 1 and Comparative Example 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Preferred embodiments of the present invention will be described in detail below with reference to the drawings. Note that the embodiments described below do not unduly limit the contents of the present invention described in the claims. In addition, not all of the configurations described below are necessarily essential components of the present invention.

[0010] 1. Display device 1.1. Overall structure First, the display device according to the present embodiment will be described with reference to the drawings. Fig. 1 is a plan view showing a display device 100 according to the present embodiment. In Fig. 1, an X-axis, a Y-axis, and a Z-axis are shown as three mutually orthogonal axes.

[0011] The display device 100 is, for example, a device that displays a full-color image using an organic electroluminescence (EL). The image may also include an image that displays only text information. The display device 100 is, for example, a microdisplay that is suitable for use in a head-mounted display or the like.

[0012] 1, the display device 100 has a display area 102 for displaying an image, and a peripheral area 104 surrounding the periphery of the display area 102 in a planar view. In the illustrated example, the planar view is a view from the Z-axis direction. The planar shape of the display area 102 is, for example, a rectangle.

[0013] The display device 100 has a plurality of pixels P. The pixels P are provided in a display area 102. The pixels P are the smallest unit for displaying an image. In the illustrated example, the pixels P are arranged in a matrix in the X-axis and Y-axis directions.

[0014] Each of the pixels P of the display device 100 has a red subpixel PR that emits red light, a green subpixel PG that emits green light, and a blue subpixel PB that emits blue light. In the illustrated example, one pixel P has one red subpixel PR. Two green subpixels PG. One blue subpixel PB. The subpixels PR, PG, and PB form one pixel P of a color image. The wavelength range of the red light emitted from the red subpixel PR is greater than 580 nm and is equal to or less than 700 nm. The wavelength range of the green light emitted from the green subpixel PG is equal to or greater than 500 nm and is equal to or less than 580 nm. The wavelength range of the blue light emitted from the blue subpixel PB is equal to or greater than 400 nm and less than 500 nm. For convenience, the subpixels PR, PG, and PB are illustrated in a simplified manner in FIG. 1.

[0015] The display device 100 includes, for example, an element substrate 2 and a light-transmitting substrate 4. The element substrate 2 and the light-transmitting substrate 4 are stacked in the Z-axis direction. The display device 100 has a so-called top emission structure, and emits light from the light-transmitting substrate 4.

[0016] The element substrate 2 has, for example, a data line driving circuit 110, a scanning line driving circuit 112, a control circuit 114, and a plurality of external terminals 116. The data line driving circuit 110, the scanning line driving circuit 112, the control circuit 114, and the plurality of external terminals 116 are provided in the peripheral region 104. The data line driving circuit 110 and the scanning line driving circuit 112 are peripheral circuits that control the driving of the sub-pixels PR, PG, and PB. The control circuit 114 controls the display of an image. Image data is supplied to the control circuit 114 from a higher-level circuit (not shown). The control circuit 114 supplies various signals based on the image data to the data line driving circuit 110 and the scanning line driving circuit 112. Although not shown, an FPC (Flexible printed circuits) board or the like for electrical connection with the higher-level circuit is connected to the external terminal 116. A power supply circuit (not shown) is electrically connected to the element substrate 2.

[0017] The light-transmitting substrate 4 is a cover that protects the element substrate 2. The light-transmitting substrate 4 is, for example, a glass substrate or a quartz substrate. The light-transmitting substrate 4 has light-transmitting properties.

[0018] 2 is an equivalent circuit diagram of the sub-pixels PR, PG, and PB of the display device 100. The element substrate 2 has, for example, a plurality of scanning lines 11, a plurality of data lines 12, a plurality of first power supply lines 13, and a plurality of second power supply lines 14.

[0019] The scanning lines 11 extend, for example, in the X-axis direction. The data lines 12 extend, for example, in the Y-axis direction. Although not shown, the multiple scanning lines 11 and the multiple data lines 12 are arranged in a lattice pattern. The scanning lines 11 are connected to a scanning line driving circuit 112 shown in FIG. 1. The data lines 12 are connected to a data line driving circuit 110 shown in FIG. 1.

[0020] 2, each of the sub-pixels PR, PG, and PB includes a light-emitting element 20 and a pixel circuit 15 that controls driving of the light-emitting element 20. The light-emitting element 20 is, for example, an OLED (Organic Light Emitting Diode). The light-emitting element 20 includes, for example, a pixel electrode 40, a light-emitting layer 43, and a common electrode 44.

[0021] The pixel electrode 40 is electrically connected to the first power supply line 13 via the pixel circuit 15. The common electrode 44 is electrically connected to the second power supply line 14. A high-level power supply potential Vel is supplied to the first power supply line 13 from a power supply circuit (not shown). A low-level power supply potential Vct is supplied to the second power supply line 14 from a power supply circuit (not shown). The pixel electrode 40 functions as an anode. The common electrode 44 functions as a cathode. In the light-emitting element 20, holes supplied from the pixel electrode 40 and electrons supplied from the common electrode 44 recombine in the light-emitting layer 43. This causes the light-emitting layer 43 to generate light.

[0022] The pixel circuit 15 has, for example, a switching transistor 16, a driving transistor 17, and a storage capacitor 18. The gate of the switching transistor 16 is electrically connected to the scanning line 11. One of the source and drain of the switching transistor 16 is electrically connected to the data line 12, and the other is electrically connected to the gate of the driving transistor 17. One of the source and drain of the driving transistor 17 is electrically connected to the first power supply line 13, and the other is electrically connected to the pixel electrode 40. One electrode of the storage capacitor 18 is electrically connected to the gate of the driving transistor 17, and the other electrode is electrically connected to the first power supply line 13.

[0023] In the pixel circuit 15, when the scanning line 11 is selected by the scanning line driving circuit 112 making the scanning signal active, the switching transistor 16 provided in the selected sub-pixel PR, PG, PB is turned on. Then, the data signal is supplied from the data line 12 to the driving transistor 17 corresponding to the selected scanning line 11. The driving transistor 17 supplies a current corresponding to the potential of the supplied data signal, i.e., the potential difference between the gate and the source, to the light-emitting element 20. Then, the light-emitting element 20 emits light with a luminance corresponding to the magnitude of the current supplied from the driving transistor 17. When the scanning line driving circuit 112 releases the selection of the scanning line 11 and the switching transistor 16 is turned off, the potential of the gate of the driving transistor 17 is held by the holding capacitance 18. Therefore, the light-emitting element 20 can maintain its light emission even after the switching transistor 16 is turned off.

[0024] The configuration of the pixel circuit 15 is not limited to the illustrated example. Although not illustrated, the pixel circuit 15 may have, for example, a transistor that controls conduction between the pixel electrode 40 and the driving transistor 17.

[0025] Fig. 3 is a plan view that shows a schematic diagram of the display device 100. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 3 that shows a schematic diagram of the display device 100.

[0026] As shown in Fig. 3, each pixel P has a red subpixel PR, a green subpixel PG, and a blue subpixel PB. In the illustrated example, the pixel P has two green subpixels PG1 and PG2 as the green subpixel PG. The subpixels PR, PG1, PG2, and PB are arranged, for example, in a square lattice pattern. In the illustrated example, in each pixel P, the green subpixel PG1 is provided in the +X-axis direction of the red subpixel PR. The green subpixel PG2 is provided in the -Y-axis direction of the red subpixel PR. The blue subpixel PB is provided in the +X-axis direction of the green subpixel PG2.

[0027] 3 and 4, the element substrate 2 of the display device 100 has, for example, a substrate 10, a light-emitting element 20, a sealing layer 50, and a coloring portion 60. As shown in Fig. 4, the light-transmitting substrate 4 is bonded to the element substrate 2 via an adhesive layer 6. For convenience, Fig. 3 omits illustration of members other than the light-emitting region 22 of the light-emitting element 20, the reflective layer 30, the pixel electrode 40, and the contact electrode 41.

[0028] The substrate 10 is, for example, a wiring substrate in which the pixel circuit 15 described above is provided on a silicon substrate. As shown in FIG. 4, the substrate 10 has, for example, a perpendicular line Q parallel to the Z axis. Instead of the silicon substrate, for example, a glass substrate, a resin substrate, or a ceramic substrate may be used. The transistors 16 and 17 of the pixel circuit 15 are, for example, MOS (Metal-Oxide-Semiconductor) type transistors, thin film transistors, and field effect transistors. Examples of materials for the elements and various wirings of the pixel circuit 15 include conductive materials such as polysilicon, metal, metal silicide, and metal compound.

[0029] The light-emitting element 20 is provided on the substrate 10. The light-emitting element 20 is provided between the substrate 10 and the sealing layer 50. A plurality of light-emitting elements 20 are provided corresponding to the sub-pixels PR, PG1, PG2, and PB. As shown in FIG. 3, the red sub-pixel PR has a first light-emitting element 20R as the light-emitting element 20. The green sub-pixel PG1 has a second light-emitting element 20G1 as the light-emitting element 20. The green sub-pixel PG2 has a third light-emitting element 20G2 as the light-emitting element 20. The blue sub-pixel PB has a fourth light-emitting element 20B as the light-emitting element 20.

[0030] As shown in FIG. 4, the light emitting element 20 includes, for example, a reflective layer 30, an insulating layer 32, an optical path adjustment layer 34, an element isolation layer 36, a pixel electrode 40, an organic layer 42, and a common electrode 44.

[0031] The reflective layer 30 is provided on the substrate 10. The reflective layer 30 is provided between the substrate 10 and the insulating layer 32. The reflective layer 30 is provided individually for each of the light-emitting elements 20. The reflective layer 30 is, for example, an aluminum (Al) layer or a silver (Ag) layer. The reflective layer 30 reflects light generated in the light-emitting layer 43. The reflective layer 30 is electrically connected to, for example, the pixel circuit 15.

[0032] The insulating layer 32 is provided on the reflective layer 30. The insulating layer 32 is provided between the reflective layer 30 and the optical path adjustment layer 34. The insulating layer 32 is further provided between adjacent reflective layers 30. The insulating layer 32 is, for example, a silicon nitride layer, a silicon oxide layer, or a silicon oxynitride layer.

[0033] The optical path adjustment layer 34 is provided on the insulating layer 32. The optical path adjustment layer 34 is provided between the insulating layer 32 and the pixel electrode 40. The optical path adjustment layer 34 is a layer that adjusts the distance D between the reflective layer 30 and the common electrode 44. The optical path adjustment layer 34 is, for example, a silicon nitride layer, a silicon oxide layer, or a silicon oxynitride layer.

[0034] The optical path adjustment layer 34 has, for example, a first adjustment layer 34a and a second adjustment layer 34b. The first adjustment layer 34a is provided in the red subpixel PR, but is not provided in the subpixels PG and PB. The second adjustment layer 34b is provided in the subpixels PR and PG, but is not provided in the blue subpixel PB. In the subpixel PR, the second adjustment layer 34b is provided on the first adjustment layer 34a. The optical path adjustment layer 34 can make the distance D of the green subpixel PG larger than the distance D of the blue subpixel PB, and the distance D of the red subpixel PR larger than the distance D of the green subpixel PG.

[0035] The pixel electrode 40 is provided on the optical path adjustment layer 34. The pixel electrode 40 is provided between the optical path adjustment layer 34 and the organic layer 42. The pixel electrode 40 is provided individually for each of the plurality of light-emitting elements 20. The pixel electrode 40 overlaps with the reflective layer 30 in a planar view. The pixel electrode 40 transmits light generated in the light-emitting layer 43. The material of the pixel electrode 40 is, for example, ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide).

[0036] The pixel electrode 40 is electrically connected to the reflective layer 30 via the contact electrode 41. The pixel electrode 40 is electrically connected to the pixel circuit 15 by the contact electrode 41 and the reflective layer 30. The contact electrode 41 is made of a material such as tungsten (W), titanium (Ti), or titanium nitride (TiN). An insulating layer 35 is provided between the contact electrode 41 and the insulating layer 32. The insulating layer 35 is a silicon nitride layer, a silicon oxide layer, or a silicon oxynitride layer.

[0037] An element isolation layer 36 is provided on the pixel electrode 40. The element isolation layer 36 is, for example, a silicon nitride layer, a silicon oxide layer, or a silicon oxynitride layer. An opening 37 is formed in the element isolation layer 36. The opening 37 penetrates the element isolation layer 36. The opening 37 defines a light emitting region 22 of the light emitting element 20. The light emitting region 22 is a region where the pixel electrode 40 and the organic layer 42 are in contact with each other. In the example shown in FIG. 3, the light emitting region 22 is a regular octagon, but the shape is not particularly limited.

[0038] As shown in Fig. 4, the organic layer 42 is provided on the pixel electrode 40. The organic layer 42 is, for example, a layer common to a plurality of light-emitting elements 20. The organic layer 42 is provided between the pixel electrode 40 and a common electrode 44. The organic layer 42 has a light-emitting layer 43 made of an organic light-emitting material. The organic light-emitting material constituting the light-emitting layer 43 is a light-emitting organic compound.

[0039] The organic layer 42 has, for example, a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer in addition to the light emitting layer 43. The organic layer 42 has, for example, the light emitting layer 43 from which red light, green light, and blue light are obtained, and generates white light emission.

[0040] The common electrode 44 is provided on the organic layer 42. The common electrode 44 is provided between the organic layer 42 and the sealing layer 50. The common electrode 44 is, for example, an electrode common to the multiple light-emitting elements 20. The material of the common electrode 44 is, for example, an alloy containing Ag, such as MgAg.

[0041] The light emitting element 20 has an optical resonator 24 that reflects and resonates light in a predetermined wavelength range between the common electrode 44 and the reflective layer 30. The optical resonator 24 multiple-reflects light generated in the light emitting layer 43 between the reflective layer 30 and the common electrode 44, selectively strengthening the light in the predetermined wavelength range. The first light emitting element 20R has an optical resonator 24 that strengthens red light. The light emitting elements 20G1 and 20G2 have optical resonators 24 that strengthen green light. The fourth light emitting element 20B has an optical resonator 24 that strengthens blue light.

[0042] The resonant wavelength in the optical resonator 24 of the light-emitting element 20 is determined by the distance D. When the resonant wavelength is λ, the relationship of the following formula (1) is established. In formula (1), n ​​is the refractive index of each layer between the reflective layer 30 and the common electrode 44 plus the calculated optical path length. m is the resonance order and is an integer equal to or greater than 0. The phase shift due to reflection by the common electrode 44 is calculated as λ / 2 in terms of wavelength.

[0043] 2nD=(m+1 / 2)λ (1)

[0044] The distance D is set so that the peak wavelength of the light in the desired wavelength range is the wavelength λ. By setting the distance D, the light in the desired wavelength range is amplified, and the intensity of the light can be increased and the spectrum can be narrowed.

[0045] 4, as described above, the distance D is adjusted by varying the thickness of the optical path adjustment layer 34 for each of the light emitting elements 20R, 20G, and 20B. Note that the method of adjusting the distance D is not limited to the method of adjusting the thickness of the optical path adjustment layer 34. For example, the distance D may be adjusted by varying the thickness of the pixel electrode 40 in the light emitting elements 20R, 20G, and 20B.

[0046] Although not shown, the first light emitting element 20R, the second light emitting element 20G1, the third light emitting element 20G2, and the fourth light emitting element 20B may have a common optical resonator 24 with the same distance D. In this case, the light in the common wavelength range is enhanced in the optical resonator 24 of the light emitting elements 20R, 20G, and 20B. In this case, the light other than the light in the predetermined wavelength range is attenuated in the coloring section 60. With such a common optical resonator 24, the manufacturing of the display device 100 can be simplified. However, in order to improve color purity, it is preferable that the light emitting elements 20R, 20G, and 20B have individual optical resonators 24 with different distances D.

[0047] The sealing layer 50 is provided on the plurality of light-emitting elements 20. The sealing layer 50 is provided between the plurality of light-emitting elements 20 and the coloring portion 60. In the illustrated example, the sealing layer 50 is provided on the common electrode 44. The sealing layer 50 covers the plurality of light-emitting elements 20. The sealing layer 50 transmits light from the light-emitting elements 20. The sealing layer 50 has insulating properties.

[0048] The sealing layer 50 protects the light-emitting element 20. Specifically, the sealing layer 50 seals the light-emitting element 20 to protect the light-emitting element 20 from the outside. The sealing layer 50 has, for example, a gas barrier property. The sealing layer 50 protects the light-emitting element 20 from external moisture, oxygen, and the like. The sealing layer 50 can reduce deterioration of the light-emitting element 20. This can improve the quality reliability of the display device 100.

[0049] The sealing layer 50 has, for example, a first layer 52, a second layer 54, and a third layer 56. The first layer 52 is provided on the light-emitting element 20. The first layer 52 is provided between the light-emitting element 20 and the second layer 54. The second layer 54 is provided on the first layer 52. The second layer 54 is provided between the first layer 52 and the third layer 56. The third layer 56 is provided on the second layer 54. The third layer 56 is provided between the second layer 54 and the coloring portion 60.

[0050] The material of the first layer 52 and the third layer 56 of the sealing layer 50 is, for example, an inorganic compound such as silicon nitride or silicon oxynitride. The third layer 56 may have an inorganic compound and have an upper surface made of resin. The second layer 54 is a planarizing layer for providing a flat surface to the third layer 56. The material of the second layer 54 is, for example, a resin such as epoxy resin. In addition, the sealing layer 50 may have an adhesive layer on the side in contact with the colored portion 60 to improve adhesion with the colored portion 60. The material of the adhesive layer is, for example, a resin such as an acrylic resin or an epoxy resin.

[0051] 1.2. Colored part The colored portion 60 is provided on the sealing layer 50. The colored portion 60 is provided between the sealing layer 50 and the light-transmitting substrate 4. For convenience, the colored portion 60 is illustrated in a simplified manner in FIG. 4. Here, FIG. 5 is a cross-sectional view taken along line VV in FIG. 4 which shows a schematic diagram of the display device 100, and is a view of the vicinity of the colored portion 60. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 4 which shows a schematic diagram of the display device 100, and is a view of the vicinity of the colored portion 60.

[0052] As shown in FIGS. 5 and 6, the coloring section 60 has, for example, a red coloring layer 70R, a green coloring layer 70G, a blue coloring layer 70B, and a light-transmitting layer 80. The coloring layers 70R, 70G, and 70B have different colors. In the illustrated example, the coloring section 60 has two green coloring layers 70G1 and 70G2 as the green coloring layer 70G. The red sub-pixel PR has a red coloring layer 70R. The green sub-pixel PG1 has a green coloring layer 70G1. The green sub-pixel PG2 has a green coloring layer 70G2. The blue sub-pixel PB has a blue coloring layer 70B.

[0053] The colored layers 70R, 70G1, 70G2, and 70B are provided on the sealing layer 50. The colored layers 70R, 70G1, 70G2, and 70B are provided between the sealing layer 50 and the light-transmitting layer 80. In the illustrated example, the colored layers 70R, 70G1, 70G2, and 70B are provided on the third layer 56 of the sealing layer 50.

[0054] The colored layers 70R, 70G1, 70G2, and 70B are color filters that selectively transmit light in a predetermined wavelength range. The predetermined wavelength range includes a peak wavelength λ determined by the distance D described above. The colored layers 70R, 70G1, 70G2, and 70B are made of a resin material, such as an acrylic photosensitive resin material containing a coloring material. The coloring material is, for example, a pigment or a dye. The colored layers 70R, 70G1, 70G2, and 70B may be positive color resists.

[0055] The red colored layer 70R is provided on the opposite side of the sealing layer 50 to the first light emitting element 20R. The red colored layer 70R overlaps with the light emitting region 22 of the first light emitting element 20R in a plan view. Light from the first light emitting element 20R passes through the red colored layer 70R. The red colored layer 70R is a color filter that selectively transmits red light out of the light from the first light emitting element 20R.

[0056] As shown in FIG. 5, the red colored layer 70R has a first flat surface 72R, a first side surface 74R, and a first connecting surface 76R.

[0057] The first flat surface 72R is the surface opposite to the sealing layer 50. The first flat surface 72R is a flat surface. In the illustrated example, the first flat surface 72R is parallel to the upper surface 58 of the sealing layer 50. The upper surface 58 is a flat surface.

[0058] The first side surface 74R is connected to the upper surface 58. In the illustrated example, the first side surface 74R is inclined with respect to the upper surface 58. The first side surface 74R is in contact with the green colored layer 70G1.

[0059] The first connecting surface 76R connects the first flat surface 72R and the first side surface 74R. The first connecting surface 76R is inclined with respect to the first flat surface 72R. The first connecting surface 76R is separated from the green colored layer 70G1. The first connecting surface 76R has a flat surface. The first connecting surface 76R is, for example, a flat surface. In a plan view, the first connecting surface 76R overlaps with the green colored layer 70G1.

[0060] The size W1 of the first connecting surface 76R in the Z-axis direction is, for example, ⅓ to ¾ of the thickness T1 of the red colored layer 70R. The thickness T1 is the maximum size of the red colored layer 70R in the Z-axis direction. Light from the first light-emitting element 20R is incident on the first flat surface 72R and the first connecting surface 76R.

[0061] The green colored layer 70G1 is provided on the opposite side of the sealing layer 50 to the second light emitting element 20G1. The green colored layer 70G1 overlaps with the light emitting region 22 of the second light emitting element 20G1 in a planar view. Light from the second light emitting element 20G1 passes through the green colored layer 70G1. The green colored layer 70G1 is a color filter that selectively transmits green light from the light from the second light emitting element 20G1.

[0062] The green colored layer 70G1 has a tapered shape. In the illustrated example, the shape of the green colored layer 70G1 is a trapezoid. The green colored layer 70G1 has a second flat surface 72G1, a second side surface 74G1, and a second connecting surface 76G1.

[0063] The second flat surface 72G1 is a surface opposite to the sealing layer 50. The second flat surface 72G1 is a flat surface. In the illustrated example, the second flat surface 72G1 is parallel to the upper surface 58 of the sealing layer 50.

[0064] The second side surface 74G1 is connected to the upper surface 58. In the illustrated example, the second side surface 74G1 is inclined with respect to the upper surface 58. The second side surface 74G1 is in contact with the first side surface 74R of the red colored layer 70R.

[0065] The second connection surface 76G1 connects the second flat surface 72G1 and the second side surface 74G1. The second connection surface 76G1 is inclined with respect to the second flat surface 72G1. The second connection surface 76G1 is separated from the red colored layer 70R. The second connection surface 76G1 has a flat surface. The second connection surface 76G1 is, for example, a flat surface.

[0066] The size W2 of the second connecting surface 76G1 in the Z-axis direction is, for example, 1 / 3 or more and 3 / 4 or less of the thickness T2 of the green colored layer 70G1. The thickness T2 is the maximum size of the green colored layer 70G1 in the Z-axis direction. In the illustrated example, the thickness T2 is smaller than the thickness T1. The sizes W1 and W2 are, for example, different from each other. In the illustrated example, the size W2 is smaller than the size W1. Light from the second light-emitting element 20G1 is incident on the second flat surface 72G1 and the second connecting surface 76G1.

[0067] A contact portion 78 between the first side surface 74R and the second side surface 74G1 is in contact with the sealing layer 50. The contact portion 78 is connected to the upper surface 58. In the illustrated example, the contact portion 78 is inclined with respect to the upper surface 58. The entire surface of the first side surface 74R is in contact with the second side surface 74G1. The entire surface of the second side surface 74G1 is in contact with the first side surface 74R.

[0068] 6, the green colored layer 70G2 is provided on the opposite side of the sealing layer 50 to the third light emitting element 20G2. The green colored layer 70G2 overlaps with the light emitting region 22 of the third light emitting element 20G2 in a plan view. Light from the third light emitting element 20G2 passes through the green colored layer 70G2. The green colored layer 70G2 is a color filter that selectively transmits green light out of the light from the third light emitting element 20G2.

[0069] The green colored layer 70G2 has a tapered shape. In the illustrated example, the shape of the green colored layer 70G2 is a trapezoid. The green colored layer 70G2 has a third flat surface 72G2, a third side surface 74G2, and a third connecting surface 76G2.

[0070] The third flat surface 72G2 is the surface opposite to the sealing layer 50. The third flat surface 72G2 is a flat surface. In the illustrated example, the third flat surface 72G2 is parallel to the upper surface 58 of the sealing layer 50.

[0071] The third side surface 74G2 is connected to the upper surface 58. In the example shown, the third side surface 74G2 is inclined with respect to the upper surface 58. The third side surface 74G2 is in contact with the blue colored layer 70B.

[0072] The third connection surface 76G2 connects the third flat surface 72G2 and the third side surface 74G2. The third connection surface 76G2 is inclined with respect to the third flat surface 72G2. The third connection surface 76G2 is separated from the blue colored layer 70B. The third connection surface 76G2 has a flat surface. The third connection surface 76G2 is, for example, a flat surface.

[0073] The size W3 of the third connection surface 76G2 in the Z-axis direction is, for example, 1 / 3 to 3 / 4 of the thickness T3 of the green colored layer 70G2. The thickness T3 is the maximum size of the green colored layer 70G2 in the Z-axis direction. Light from the third light-emitting element 20G2 is incident on the third flat surface 72G2 and the third connection surface 76G2.

[0074] The blue colored layer 70B is provided on the opposite side of the sealing layer 50 to the fourth light emitting element 20B. The blue colored layer 70B overlaps with the light emitting region 22 of the fourth light emitting element 20B in a plan view. The blue colored layer 70B is a color filter that selectively transmits blue light out of the light from the fourth light emitting element 20B.

[0075] The blue colored layer 70B has a fourth flat surface 72B, a fourth side surface 74B, and a fourth connecting surface 76B.

[0076] The fourth flat surface 72B is the surface opposite to the sealing layer 50. The fourth flat surface 72B is a flat surface. In the illustrated example, the fourth flat surface 72B is parallel to the upper surface 58 of the sealing layer 50.

[0077] The fourth side surface 74B is connected to the top surface 58. In the example shown, the fourth side surface 74B is inclined with respect to the top surface 58. The fourth side surface 74B is in contact with the third side surface 74G2 of the green colored layer 70G2.

[0078] The fourth connecting surface 76B connects the fourth flat surface 72B and the fourth side surface 74B. The fourth connecting surface 76B is inclined with respect to the fourth flat surface 72B. The fourth connecting surface 76B is separated from the green colored layer 70G2. The fourth connecting surface 76B has a flat surface. The fourth connecting surface 76B is, for example, a flat surface. In a plan view, the fourth connecting surface 76B overlaps with the green colored layer 70G2.

[0079] The size W4 of the fourth connecting surface 76B in the Z-axis direction is, for example, 1 / 3 or more and 3 / 4 or less of the thickness T3 of the blue colored layer 70B. The thickness T4 is the maximum size of the blue colored layer 70B in the Z-axis direction. In the illustrated example, the thickness T4 is greater than the thickness T3. The sizes W3 and W4 are, for example, different from each other. In the illustrated example, the size W4 is greater than the size W3. Light from the fourth light-emitting element 20B is incident on the fourth flat surface 72B and the fourth connecting surface 76B.

[0080] A contact portion 79 between the third side surface 74G2 and the fourth side surface 74B is in contact with the sealing layer 50. The contact portion 79 is connected to the upper surface 58. In the illustrated example, the contact portion 79 is inclined with respect to the upper surface 58. The entire surface of the third side surface 74G2 is in contact with the fourth side surface 74B. The entire surface of the fourth side surface 74B is in contact with the third side surface 74G2.

[0081] As shown in FIG. 5 and FIG. 6, the light-transmitting layer 80 is provided on the coloring layers 70R, 70G1, 70G2, 70B. The light-transmitting layer 80 is provided between the coloring layers 70R, 70G1, 70G2, 70B and the adhesive layer 6. The light-transmitting layer 80 covers the coloring layers 70R, 70G1, 70G2, 70B. Specifically, the light-transmitting layer 80 covers the flat surfaces 72R, 72G1, 72G2, 72B and the connection surfaces 76R, 76G1, 76G2, 76B. The upper surface of the light-transmitting layer 80 is, for example, a flat surface. The light-transmitting layer 80 protects the coloring layers 70R, 70G1, 70G2, 70B.

[0082] The light-transmitting layer 80 transmits light from the light-emitting element 20. The light-transmitting layer 80 is, for example, a silicon oxide layer, a silicon nitride layer, or a silicon oxynitride layer. The refractive index of the light-transmitting layer 80 is different from the refractive indexes of the colored layers 70R, 70G1, 70G2, and 70B. The refractive indexes of the colored layers 70R, 70G1, 70G2, and 70B can be adjusted by an additive or the like.

[0083] The refractive index of the light-transmitting layer 80 may be higher than the refractive index of the colored layers 70R, 70G1, 70G2, and 70B. In this case, the difference between the refractive index of the light-transmitting layer 80 and the refractive index of the colored layers 70R, 70G1, 70G2, and 70B may be 0.2 or more. The colored layers 70R, 70G1, 70G2, and 70B collect light from the light-emitting element 20 at the connection surfaces 76R, 76G1, 76G2, and 76B, respectively. This can improve the light extraction efficiency.

[0084] The refractive index of the light-transmitting layer 80 may be lower than that of the colored layers 70R, 70G1, 70G2, and 70B. In this case, the difference between the refractive index of the light-transmitting layer 80 and that of the colored layers 70R, 70G1, 70G2, and 70B may be 0.1 or more. The colored layers 70R, 70G1, 70G2, and 70B diverge light from the light-emitting element 20 at the connection surfaces 76R, 76G1, 76G2, and 76B, respectively. This can improve the viewing angle characteristics. The colored layers 70R, 70G1, 70G2, and 70B have a function as a lens due to the connection surfaces 76R, 76G1, 76G2, and 76B.

[0085] Although not shown, for example, the red colored layer 70R has a side surface in contact with the green colored layer 70G2 and a connection surface that connects the side surface and the first flat surface 72R and is separated from the green colored layer 70G2. The green colored layer 70G1 has a side surface in contact with the red colored layer 70R and a connection surface that connects the side surface and the third flat surface 72G2 and is separated from the red colored layer 70R. The contact portion between the side surface of the red colored layer 70R and the side surface of the green colored layer 70G2 is in contact with the sealing layer 50.

[0086] Furthermore, the above also applies to, for example, the green colored layer 70G2 and the blue colored layer 70B. Furthermore, the above also applies to, for example, a colored layer, a pixel P having the colored layer, and a colored layer constituting the adjacent pixel P and adjacent to the colored layer. In other words, the above also applies to adjacent colored layers among a plurality of colored layers.

[0087] 1.3. Effects The display device 100 includes a substrate 10, a first light-emitting element 20R and a second light-emitting element 20G1 provided on the substrate 10, and a sealing layer 50 that covers the first light-emitting element 20R and the second light-emitting element 20G1. The display device 100 further includes a red coloring layer 70R provided on the sealing layer 50 opposite the first light-emitting element 20R and serving as a first coloring layer through which light from the first light-emitting element 20R passes. The display device 100 further includes a green coloring layer 70G1 provided on the sealing layer 50 opposite the second light-emitting element 20G1 and serving as a second coloring layer through which light from the second light-emitting element 20G1 passes. The red colored layer 70R has a first flat surface 72R on the opposite side to the sealing layer 50, a first side surface 74R in contact with the green colored layer 70G1, and a first connecting surface 76R that is inclined with respect to the first flat surface 72R, connects the first flat surface 72R and the first side surface 74R, and is separated from the green colored layer 70G1. The green colored layer 70G1 has a second flat surface 72G1 on the opposite side to the sealing layer 50, a second side surface 74G1 in contact with the first side surface 74R, and a second connecting surface 76G1 that is inclined with respect to the second flat surface 72G1, connects the second flat surface 72G1 and the second side surface 74G1, and is separated from the red colored layer 70R. A contact portion 78 between the first side surface 74R and the second side surface 74G1 is in contact with the sealing layer 50.

[0088] Therefore, in the display device 100, the color purity can be improved. For example, as shown in FIG. 7, when the wall portion 1010 is provided between the red colored layer 1070R and the green colored layer 1070G and on the sealing layer 1050, there is light that enters the wall portion 1010 before entering the red colored layer 1070R, as shown by the dashed arrow in FIG. 7. In particular, when the pixel size becomes small, there is a limit to how small the size of the wall portion 1010 can be, so the ratio of the wall portion 1010 to the red colored layer 1070R increases. Therefore, the ratio of the light that enters the wall portion 1010 before entering the red colored layer 1070R increases. The light travels a shorter distance through the red colored layer 1070R, so the purity of red color decreases. Note that a light-transmitting layer 1080 is provided on the colored layers 1070R and 1070G.

[0089] In contrast, in the display device 100, the contact portion 78 between the first side surface 74R and the second side surface 74G1 is in contact with the sealing layer 50. Therefore, there is no wall portion in contact with the sealing layer 50 between the red colored layer 70R and the green colored layer 70G1. Therefore, even if the size of the pixel P is reduced, the color purity is unlikely to decrease. Therefore, the color purity can be improved. Note that FIG. 7 is a cross-sectional view that shows a schematic diagram of a display device according to a reference example.

[0090] The display device 100 has a light-transmitting layer 80 covering the first flat surface 72R, the first connecting surface 76R, the second flat surface 72G1, and the second connecting surface 76G1, and the refractive index of the light-transmitting layer 80 is different from the refractive index of the red colored layer 70R and the refractive index of the green colored layer 70G1. Therefore, in the display device 100, the red colored layer 70R can function as a lens due to the first connecting surface 76R. Furthermore, the green colored layer 70G1 can function as a lens due to the second connecting surface 76G1.

[0091] In the display device 100, the first connection surface 76R and the second connection surface 76G1 have flat surfaces. Therefore, in the display device 100, the first connection surface 76R having a flat surface can refract the light from the first light-emitting element 20R. Furthermore, the second connection surface 76G1 having a flat surface can refract the light from the second light-emitting element 20G1.

[0092] In the display device 100, the size W1 of the first connection surface 76R in the direction of the perpendicular line Q to the substrate 10 is equal to or greater than ⅓ of the thickness T1 of the red colored layer 70R. Therefore, in the display device 100, the red colored layer 70R can fully function as a lens by the first connection surface 76R.

[0093] In the display device 100, the size W2 of the second connection surface 76G1 in the direction of the perpendicular line Q is ⅓ or more of the thickness T2 of the green colored layer 70G1. Therefore, in the display device 100, the green colored layer 70G1 can fully function as a lens by the second connection surface 76G1.

[0094] In the display device 100, the size W1 of the first connecting surface 76R in the direction of the perpendicular line Q and the size W2 of the second connecting surface 76G1 in the direction of the perpendicular line Q are different from each other. Therefore, in the display device 100, the red colored layer 70R and the green colored layer 70G1 can have different lens functions.

[0095] The display device 100 includes a third light-emitting element 20G2 and a fourth light-emitting element 20B that are provided on the substrate 10 and covered with a sealing layer 50. The display device 100 further includes a green coloring layer 70G2 that is provided on the sealing layer 50 opposite to the third light-emitting element 20G2 and serves as a third coloring layer through which light from the third light-emitting element 20G2 passes. The display device 100 further includes a blue coloring layer 70B that is provided on the sealing layer 50 opposite to the fourth light-emitting element 20B and serves as a fourth coloring layer through which light from the fourth light-emitting element 20B passes. The green coloring layer 70G2 includes a third flat surface 72G2 on the opposite side to the sealing layer 50, a third side surface 74G2 that contacts the blue coloring layer 70B, and a third connection surface 76G2 that is inclined with respect to the third flat surface 72G2, connects the third flat surface 72G2 and the third side surface 74G2, and is separated from the blue coloring layer 70B. The blue colored layer 70B has a fourth flat surface 72B on the opposite side to the sealing layer 50, a fourth side surface 74B in contact with the third side surface 74G2, and a fourth connecting surface 76B inclined with respect to the fourth flat surface 72B, connecting the fourth flat surface 72B and the fourth side surface 74B, and separated from the green colored layer 70G2. A contact portion 79 between the third side surface 74G2 and the fourth side surface 74B is in contact with the sealing layer 50. A size W3 of the third connecting surface 76G2 in the direction of the perpendicular line Q and a size W4 of the fourth connecting surface 76B in the direction of the perpendicular line Q are different from each other. Therefore, in the display device 100, the green colored layer 70G2 and the blue colored layer 70B can have different lens functions.

[0096] 2. Display device manufacturing method Next, a method for manufacturing the display device 100 according to this embodiment will be described with reference to the drawings. Figures 8 to 13 are cross-sectional views that typically show the manufacturing process of the display device 100 according to this embodiment.

[0097] 8, a green coloring layer 70G is applied onto the sealing layer 50. The green coloring layer 70G is applied by, for example, a spin coating method. The green coloring layer 70G is, for example, a color resist. Next, the green coloring layer 70G is pre-baked.

[0098] 9, the green colored layer 70G is exposed to light using the mask layer 90 as a mask.

[0099] 10, the exposed green coloring layer 70G is developed. Next, the green coloring layer 70G is post-baked. This allows the green coloring layer 70G to be formed in a predetermined shape.

[0100] 11, a red coloring layer 70R is applied onto the sealing layer 50 and the green coloring layer 70G. The red coloring layer 70R is applied by, for example, a spin coating method. The red coloring layer 70R is, for example, a color resist. Next, the red coloring layer 70R is pre-baked.

[0101] 12, the red coloring layer 70R is exposed to light using the mask layer 92 as a mask. The mask layer 92 does not overlap, for example, the green coloring layer 70G in plan view. Note that the mask layer 92 may overlap a portion of the green coloring layer 70G in plan view.

[0102] 13, the exposed red colored layer 70R is developed. Next, the red colored layer 70R is post-baked. This allows the red colored layer 70R to be formed in a predetermined shape.

[0103] Next, for example, the blue coloring layer 70B is formed in the same manner as the red coloring layer 70R. The order of forming the coloring layers 70R, 70G, and 70B is not particularly limited. For example, the blue coloring layer 70B may be formed before the red coloring layer 70R is formed.

[0104] 5 and 6, the light-transmitting layer 80 is formed on the colored layers 70R, 70G, and 70B. The light-transmitting layer 80 is formed by, for example, a chemical vapor deposition (CVD) method.

[0105] As shown in FIG. 4, the light-transmitting substrate 4 is bonded to the element substrate 2 via an adhesive layer 6.

[0106] The above steps make it possible to manufacture the display device 100. The element substrate 2 is formed, for example, using a semiconductor manufacturing process.

[0107] 3. Display Device Modifications 3.1. First variant Next, a display device according to a first modification of this embodiment will be described with reference to the drawings. Figure 14 is a cross-sectional view that shows a schematic diagram of a display device 200 according to a first modification of this embodiment.

[0108] Hereinafter, in the display device 200 according to the first modification of this embodiment, components having the same functions as those of the components of the display device 100 according to this embodiment described above are denoted by the same reference numerals, and detailed description thereof will be omitted. This is the same for the display devices according to the second to fourth modifications of this embodiment described later.

[0109] In the display device 100 described above, as shown in FIG. 5, the first connecting surface 76R and the second connecting surface 76G1 have flat surfaces.

[0110] In contrast, in the display device 200, the first connecting surface 76R and the second connecting surface 76G1 have curved surfaces as shown in Fig. 14. The first connecting surface 76R and the second connecting surface 76G1 are, for example, curved surfaces.

[0111] Although not shown, the shapes of the first connecting surface 76R and the second connecting surface 76G1 are not particularly limited. For example, the connecting surfaces 76R and 76G1 may have a convex portion. Although not shown, the third connecting surface 76G2 of the green colored layer 70G1 and the fourth connecting surface 76B of the blue colored layer 70B may have a curved surface.

[0112] In the display device 200, the first connection surface 76R and the second connection surface 76G1 have curved surfaces. Therefore, in the display device 200, the light from the first light-emitting element 20R can be refracted by the first connection surface 76R having a curved surface. Furthermore, the light from the second light-emitting element 20G1 can be refracted by the second connection surface 76G1 having a curved surface.

[0113] 3.2. Second variant Next, a display device according to a second modification of this embodiment will be described with reference to the drawings. Figure 15 is a cross-sectional view that shows a schematic diagram of a display device 300 according to the second modification of this embodiment.

[0114] In the above-described display device 100, as shown in FIG. 5, the angle between the first flat surface 72R and the first connecting surface 76R is the same as the angle between the second flat surface 72G1 and the second connecting surface 76G1.

[0115] In contrast, in the display device 300, as shown in FIG. 15, the angle θ1 between the first flat surface 72R and the first connecting surface 76R is different from the angle θ2 between the second flat surface 72G1 and the second connecting surface 76G1. In the illustrated example, the angle θ1 is larger than the angle θ2. The angles θ1 and θ2 may be obtuse angles. The angle θ2 may be a right angle. For example, the angles θ1 and θ2 can be adjusted by adjusting the conditions for post-baking the red coloring layer 70R and the green coloring layer 70G1. In addition, when a positive color resist is used as the coloring layers 70R and 70G1, the angles θ1 and θ2 tend to be large.

[0116] Although not shown, the angle between the third flat surface 72G2 and the third connecting surface 76G2 of the green colored layer 70G1 and the angle between the fourth flat surface 72B and the fourth connecting surface 76B of the blue colored layer 70B may be different.

[0117] In the display device 200, the angle θ1 between the first flat surface 72R and the first connecting surface 76R is different from the angle θ2 between the second flat surface 72G1 and the second connecting surface 76G1. Therefore, the refraction angle of the light from the first light-emitting element 20R at the first connecting surface 76R and the refraction angle of the light from the second light-emitting element 20G1 at the second connecting surface 76G1 can be changed. For example, if the area of ​​the light-emitting region 22 of the first light-emitting element 20R is smaller than the area of ​​the light-emitting region 22 of the second light-emitting element 20G1, the light from the first light-emitting element 20R is unlikely to diverge. Therefore, by making the angle θ1 larger than the angle θ2, the difference in radiation angle between the light emitted from the red sub-pixel PR and the light emitted from the green sub-pixel PG1 can be reduced. This can improve the color viewing angle characteristics of the display device 300.

[0118] 3.3. Third variant Next, a display device according to a third modification of this embodiment will be described with reference to the drawings. Figure 16 is a cross-sectional view that shows a schematic diagram of a display device 400 according to the third modification of this embodiment.

[0119] In the display device 100 described above, the contact portion 78 between the first side surface 74R and the second side surface 74G1 is inclined with respect to the upper surface 58 of the sealing layer 50, as shown in FIG.

[0120] 16, in the display device 400, a contact portion 78 between the first side surface 74R and the second side surface 74G1 is perpendicular to the upper surface 58 of the sealing layer 50. The first side surface 74R and the second side surface 74G1 are perpendicular to the upper surface 58.

[0121] Although not shown, a contact portion 79 between the third side surface 74G2 of the green colored layer 70G1 and the fourth side surface 74B of the blue colored layer 70B may be perpendicular to the upper surface 58.

[0122] 3.4. Fourth variant Next, a display device according to a fourth modification of this embodiment will be described with reference to the drawings. Fig. 17 is a plan view showing a display device 500 according to the fourth modification of this embodiment. For convenience, Fig. 17 omits illustration of members other than the light-emitting region 22, the reflective layer 30, and the pixel electrode 40. In the display device 100 described above, as shown in FIG. 3, two green sub-pixels PG, namely, green sub-pixels PG1 and PG2, are provided in one pixel P.

[0123] 17, in the display device 500, one green sub-pixel PG is provided in one pixel P. The sub-pixels PR, PG, and PB are arranged in a delta configuration, for example. In the illustrated example, the shape of the light-emitting region 22 is a regular hexagon.

[0124] 4. Electronic equipment 4.1. Overall structure Next, a head mounted display as an electronic device according to this embodiment will be described with reference to the drawings. Fig. 18 is a perspective view showing a schematic view of a head mounted display 900 according to this embodiment.

[0125] The head mounted display 900 is a head-mounted display having an appearance like glasses, as shown in Fig. 18. The head mounted display 900 is worn on the head of an observer. The observer is a user who uses the head mounted display 900. The head mounted display 900 allows the observer to view image light formed by a virtual image, and also allows the observer to view an external world image in a see-through manner.

[0126] The head mounted display 900 has, for example, a first display unit 910a, a second display unit 910b, a frame 920, a first temple 930a, and a second temple 930b.

[0127] The first display unit 910a and the second display unit 910b display images. Specifically, the first display unit 910a displays a virtual image for the observer's right eye. The second display unit 910b displays a virtual image for the observer's left eye. The display units 910a and 910b each include, for example, an image forming device 911 and a light guide device 915.

[0128] The image forming device 911 forms image light. The image forming device 911 has an optical system, such as a light source and a projection device, and an external member 912. The external member 912 houses the light source and the projection device.

[0129] The light guiding device 915 covers the viewer's eyes. The light guiding device 915 guides the image light formed by the image forming device 911 and allows the viewer to visually recognize the image light overlapping with the outside light. Details of the image forming device 911 and the light guiding device 915 will be described later.

[0130] The frame 920 supports the first display unit 910a and the second display unit 910b. The frame 920, for example, surrounds the display units 910a and 910b. In the illustrated example, the image forming device 911 of the first display unit 910a is attached to one end of the frame 920. The image forming device 911 of the second display unit 910b is attached to the other end of the frame 920.

[0131] A first temple 930a and a second temple 930b extend from the frame 920. In the illustrated example, the first temple 930a extends from one end of the frame 920. The second temple 930b extends from the other end of the frame 920.

[0132] The first temple 930a and the second temple 930b are suspended from the ears of the viewer when the viewer wears the head mounted display 900. The viewer's head is positioned between the temples 930a and 930b.

[0133] 4.2. Image forming device and light guide device 19 is a diagram illustrating an image forming device 911 and a light guide device 915 of a first display unit 910a of a head mounted display 900. The first display unit 910a and the second display unit 910b basically have the same configuration. Therefore, the following description of the first display unit 910a can be applied to the second display unit 910b.

[0134] As shown in FIG. 19, the image forming device 911 includes, for example, the display device 100 as a light source, and a projection device 914 for forming an image.

[0135] The projection device 914 projects the image light emitted from the display device 100 toward the light guide device 915. The projection device 914 is, for example, a projection lens. The lens constituting the projection device 914 may have an axially symmetrical surface as a lens surface.

[0136] The light guiding device 915 is precisely positioned with respect to the projection device 914 by, for example, being screwed to the lens barrel of the projection device 914. The light guiding device 915 has, for example, an image light guiding member 916 that guides the image light, and a see-through member 918 for see-through.

[0137] The image light emitted from the projection device 914 is incident on the image light guiding member 916. The image light guiding member 916 is a prism that guides the image light toward the viewer's eye. The image light that enters the image light guiding member 916 is repeatedly reflected on the inner surface of the image light guiding member 916, and is then reflected by the reflective layer 917 and emitted from the image light guiding member 916. The image light that is emitted from the image light guiding member 916 reaches the viewer's eye. The reflective layer 917 is made of, for example, a metal or a dielectric multilayer film. The reflective layer 917 may be a half mirror.

[0138] The transparent member 918 is adjacent to the image light guiding member 916. The transparent member 918 is fixed to the image light guiding member 916. For example, the outer surface of the transparent member 918 is continuous with the outer surface of the image light guiding member 916. The transparent member 918 allows the observer to see outside light through it. The image light guiding member 916 also has a function of allowing the observer to see outside light through it, in addition to the function of guiding the image light. Note that the head mounted display 900 may be configured not to allow the observer to see outside light through it.

[0139] The electronic device according to the present embodiment is not limited to a head-mounted display as long as it has the display device according to the present embodiment. The electronic device according to the present embodiment may be an EVF (Electronic View Finder), a projector, a wearable display such as a smart watch, or an in-vehicle head-up display.

[0140] 5. Examples and Comparative Examples As Example 1, a display device corresponding to Figs. 1 to 6 was prepared. In Example 1, adjacent colored layers are in contact with each other, and the contact portions of the adjacent colored layers are in contact with the sealing layer. As Comparative Example 1, a comparative example corresponding to Fig. 7 was prepared. In Comparative Example 1, a wall portion is provided on the sealing layer, and the wall portion is located between adjacent colored layers.

[0141] The light extraction efficiency was measured in Example 1 and Comparative Example 1. FIG. 20 is a table showing the light extraction efficiency in Example 1 and Comparative Example 1. In FIG. 20, the light extraction efficiency in Comparative Example 1 is normalized as "1". As shown in FIG. 20, it was found that Example 1 had a better light extraction efficiency than Comparative Example 1 for white light, red light, green light, and blue light.

[0142] In Example 1 and Comparative Example 1, the color gamut during low gradation lighting was measured. A spectroradiometer "CS2000A" manufactured by KONICA MINOLTA was used as the measuring device. The measurement item was "chromaticity x, y". The measurement method was "radiation". The measurement speed was "Normal". The measurement mode was "No-Sync".

[0143] FIG. 21 is a table showing the measurement results of the color gamut in Example 1 and Comparative Example 1. FIG. 22 is a CIE1931 color space showing the measurement results of the color gamut in Example 1 and Comparative Example 1. As shown in FIGS. 21 and 22, it was found that Example 1 has a wider color gamut than Comparative Example 1. In general, the color gamut tends to narrow when low gradation lighting is used or the pixel size is small. In such cases, Example 1 can be said to be particularly effective.

[0144] The above-described embodiment and modifications are merely examples, and the present invention is not limited to these. For example, the embodiments and modifications can be appropriately combined.

[0145] The present invention includes configurations that are substantially the same as the configurations described in the embodiments, for example, configurations with the same functions, methods, and results, or configurations with the same purpose and effect. The present invention also includes configurations in which non-essential parts of the configurations described in the embodiments are replaced. The present invention also includes configurations that achieve the same effects as the configurations described in the embodiments, or configurations that can achieve the same purpose. The present invention also includes configurations in which publicly known technology is added to the configurations described in the embodiments.

[0146] The following can be derived from the above-described embodiment and modifications.

[0147] One aspect of the display device is A substrate; a first light emitting element and a second light emitting element provided on the substrate; a sealing layer covering the first light emitting element and the second light emitting element; a first colored layer provided on the opposite side of the sealing layer to the first light emitting element, through which light from the first light emitting element passes; a second colored layer provided on the opposite side of the sealing layer to the second light emitting element, through which light from the second light emitting element passes; having The first colored layer is a first flat surface opposite the sealing layer; a first side surface in contact with the second colored layer; a first connection surface that is inclined with respect to the first flat surface, connects the first flat surface and the first side surface, and is spaced apart from the second colored layer; having The second colored layer is a second flat surface opposite the sealing layer; and a second side surface in contact with the first side surface; a second connection surface inclined with respect to the second flat surface, connecting the second flat surface and the second side surface, and spaced apart from the first colored layer; having A contact portion between the first side surface and the second side surface is in contact with the sealing layer.

[0148] According to this display device, the color purity can be improved.

[0149] In one embodiment of the display device, a light-transmitting layer covering the first flat surface, the first connecting surface, the second flat surface, and the second connecting surface; The refractive index of the light transmitting layer may be different from the refractive index of the first colored layer and the refractive index of the second colored layer.

[0150] According to this display device, the first colored layer can function as a lens due to the first connecting surface, and the second colored layer can function as a lens due to the second connecting surface.

[0151] In one embodiment of the display device, The first connecting surface and the second connecting surface may have a flat surface.

[0152] According to this display device, the light from the first light-emitting element can be refracted by the first connecting surface having a flat surface, and the light from the second light-emitting element can be refracted by the second connecting surface having a flat surface.

[0153] In one embodiment of the display device, The angle between the first flat surface and the first connecting surface may be different from the angle between the second flat surface and the second connecting surface.

[0154] According to this display device, the refraction angle of the light from the first light emitting element at the first connection surface and the refraction angle of the light from the second light emitting element at the second connection surface can be changed.

[0155] In one embodiment of the display device, The first connecting surface and the second connecting surface may have a curved surface.

[0156] According to this display device, the light from the first light-emitting element can be refracted by the first connecting surface having a curved surface, and the light from the second light-emitting element can be refracted by the second connecting surface having a curved surface.

[0157] In one embodiment of the display device, The size of the first connection surface in a direction perpendicular to the substrate may be equal to or greater than ⅓ of the thickness of the first colored layer.

[0158] According to this display device, the first colored layer can fully function as a lens due to the first connecting surface.

[0159] In one embodiment of the display device, The size of the second connecting surface in the perpendicular direction may be equal to or greater than ⅓ of the thickness of the second colored layer.

[0160] According to this display device, the second colored layer can fully function as a lens due to the second connecting surface.

[0161] In one embodiment of the display device, The size of the first connection surface in a direction perpendicular to the substrate and the size of the second connection surface in the direction perpendicular to the substrate may be different from each other.

[0162] According to this display device, the lens function can be changed between the first colored layer and the second colored layer.

[0163] In one embodiment of the display device, a third light emitting element and a fourth light emitting element provided on the substrate and covered with the sealing layer; a third colored layer provided on the opposite side of the sealing layer from the third light emitting element, through which light from the third light emitting element passes; a fourth colored layer provided on the sealing layer on the opposite side to the fourth light emitting element, through which light from the fourth light emitting element passes; having The third colored layer is a third flat surface opposite the sealing layer; and a third side surface in contact with the fourth colored layer; a third connection surface inclined with respect to the third flat surface, connecting the third flat surface and the third side surface, and spaced apart from the fourth colored layer; having The fourth colored layer is a fourth flat surface opposite the sealing layer; and a fourth side surface in contact with the third side surface; a fourth connection surface inclined with respect to the fourth flat surface, connecting the fourth flat surface and the fourth side surface, and spaced apart from the third colored layer; having a contact portion between the third side surface and the fourth side surface contacts the sealing layer; The size of the third connecting surface in the perpendicular direction and the size of the fourth connecting surface in the perpendicular direction may be different from each other.

[0164] According to this display device, the lens function can be changed between the third colored layer and the fourth colored layer.

[0165] One aspect of the electronic device is The display device has one aspect of the above. [Explanation of symbols]

[0166] 2...element substrate, 4...translucent substrate, 6...adhesive layer, 10...substrate, 11...scanning line, 12...data line, 13...first power supply line, 14...second power supply line, 15...pixel circuit, 16...switching transistor, 17...driving transistor, 18...holding capacitor, 20...light-emitting element, 20R...first light-emitting element, 20G1...second light-emitting element, 20G2...third light-emitting element, 20B...fourth light-emitting element, 22...light-emitting region, 24...optical resonator, 30...reflective layer, 32...insulating layer, 34...optical path adjustment layer, 3 4a...first adjustment layer, 34b...second adjustment layer, 35...insulating layer, 36...element isolation layer, 37...opening, 40...pixel electrode, 41...contact electrode, 42...organic layer, 43...light-emitting layer, 44...common electrode, 50...sealing layer, 52...first layer, 54...second layer, 56...third layer, 58...upper surface, 60...coloring portion, 70R...red coloring layer, 70G, 70G1, 70G2...green coloring layers, 70B...blue coloring layer, 72R...first flat surface, 72G1...second flat surface, 72G2...third flat surface, 72B...fourth Flat surface, 74R...first side surface, 74G1...second side surface, 74G2...third side surface, 74B...fourth side surface, 76R...first connection surface, 76G1...second connection surface, 76G2...third connection surface, 76B...fourth connection surface, 78, 79...contact portion, 80...light-transmitting layer, 90...mask layer, 91...opening, 92...mask layer, 100...display device, 102...display area, 104...peripheral area, 110...data line driving circuit, 112...scanning line driving circuit, 114...control circuit, 116...external terminal, 200, 300 , 400, 500... display device, 900... head mounted display, 910a... first display section, 910b... second display section, 911... image forming device, 912... external member, 914... projection device, 915... light guide device, 916... image light guide member, 917... reflective layer, 918... transparent member, 920... frame, 930a... first temple, 930b... second temple, 1010... wall section, 1050... sealing layer, 1070R... red colored layer, 1070G... green colored layer, 1080... light-transmitting layer

Claims

1. A substrate; a first light-emitting element and a second light-emitting element provided on the substrate; a sealing layer covering the first light-emitting element and the second light-emitting element; a first colored layer provided on the sealing layer opposite to the first light emitting element, through which light from the first light emitting element passes; a second colored layer provided on the sealing layer on the opposite side to the second light-emitting element, through which light from the second light-emitting element passes; and The first colored layer is a first flat surface opposite the sealing layer; a first side surface in contact with the second colored layer; a first connecting surface inclined relative to the first flat surface, connecting the first flat surface and the first side surface, and spaced apart from the second colored layer; and The second colored layer is a second flat surface opposite the sealing layer; and a second side surface in contact with the first side surface; a second connecting surface inclined relative to the second flat surface, connecting the second flat surface and the second side surface, and spaced apart from the first colored layer; and A display device, wherein a contact portion between the first side surface and the second side surface is in contact with the sealing layer.

2. In claim 1, a light-transmitting layer covering the first flat surface, the first connecting surface, the second flat surface, and the second connecting surface; A display device, wherein the refractive index of the light-transmitting layer is different from the refractive index of the first colored layer and the refractive index of the second colored layer.

3. In claim 1, The display device, wherein the first connecting surface and the second connecting surface have flat surfaces.

4. In claim 1, A display device, wherein an angle formed between the first flat surface and the first connecting surface is different from an angle formed between the second flat surface and the second connecting surface.

5. In claim 1, The display device, wherein the first connection surface and the second connection surface have curved surfaces.

6. In claim 1, A display device, wherein the size of the first connection surface in the direction perpendicular to the substrate is equal to or greater than one-third of the thickness of the first colored layer.

7. In claim 6, A display device, wherein the size of the second connection surface in the perpendicular direction is equal to or greater than one-third of the thickness of the second colored layer.

8. In claim 1, A display device, wherein the size of the first connection surface in the direction perpendicular to the substrate and the size of the second connection surface in the direction perpendicular to the substrate are different from each other.

9. In claim 8, a third light-emitting element and a fourth light-emitting element provided on the substrate and covered with the sealing layer; a third colored layer provided on the sealing layer on the opposite side to the third light emitting element, through which light from the third light emitting element passes; a fourth colored layer provided on the sealing layer on the opposite side to the fourth light emitting element, through which light from the fourth light emitting element passes; and The third colored layer is a third flat surface opposite the sealing layer; and a third side surface in contact with the fourth colored layer; a third connecting surface inclined relative to the third flat surface, connecting the third flat surface and the third side surface, and spaced apart from the fourth colored layer; and The fourth colored layer is a fourth flat surface opposite the sealing layer; and a fourth side surface in contact with the third side surface; a fourth connecting surface inclined relative to the fourth flat surface, connecting the fourth flat surface and the fourth side surface, and spaced apart from the third colored layer; and a contact portion between the third side surface and the fourth side surface contacts the sealing layer; A display device, wherein the size of the third connecting surface in the perpendicular direction and the size of the fourth connecting surface in the perpendicular direction are different from each other.

10. An electronic device comprising the display device according to any one of claims 1 to 9.

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