Display device

Abstract

This display device has a plurality of light emitting element units each including a first light emitting element (101), a second light emitting element (102), and a third light emitting element (103), wherein: in each light emitting element unit, a first base part (351) having a thickness TB1 and a first lens part (511) having a thickness TL1 are provided on the first light emitting unit (301) that emits light having a first color, a second base part (352) having a thickness TB2 and a second lens part (512) having a thickness TL2 are provided on the second light emitting unit (302) that emits light having a second color, and a third base part (353) having a thickness TB3 and a third lens part 513 having a thickness TL3 are provided on the third light emitting unit (303) that emits light having a third color; and (TL3+TB3)≤(TL2+TB2)<(TL1+TB1) [except when a value of TB3, a value of TB2 and a value of TB1 are the same] is satisfied.

Description

[Technical Field]

[0001] The present disclosure relates to a display device. [Background technology]

[0002] In recent years, displays using organic electroluminescence (EL) elements as light-emitting elements have become Development of devices (organic EL display devices) is progressing. This organic EL display device has, for example, a plurality of light-emitting elements, each of which has an organic layer including at least a light-emitting layer and a second electrode (upper electrode, for example, a cathode electrode) formed on a first electrode (lower electrode, for example, an anode electrode) formed separately for each pixel. Then, for example, a red light-emitting element, a green light-emitting element, and a blue light-emitting element are each provided as sub-pixels, and these sub-pixels constitute one pixel, and light from the light-emitting layer is emitted to the outside via the second electrode (upper electrode).

[0003] In such display devices, a lens member is disposed on the light-emitting side of each light-emitting element to extend the light-emitting lifetime of the light-emitting element, improve light extraction efficiency, and increase front luminance. For example, Japanese Patent Application Laid-Open No. 2012-109213 discloses a display device in which a convex lens is provided to reduce the difference in degradation characteristics between organic EL elements for each color of light emitted by the pixel. Specifically, pixels having organic EL elements with a high degradation rate are provided with lenses with greater light-gathering characteristics than pixels having organic EL elements with a low degradation rate, and the light-gathering characteristics are controlled by the radius of curvature or the refractive index of the convex lens. Japanese Patent Application Laid-Open No. 2012-089474 also discloses a display device in which a lens is provided to reduce the difference in angle dependence of luminance between organic EL elements for each color of light emitted by the pixel. Specifically, a pixel having an organic EL element whose brightness is highly angularly dependent is provided with a lens having greater divergence characteristics than a pixel having an organic EL element whose brightness is less angularly dependent, and the divergence characteristics are controlled by the radius of curvature of the concave lens, or the distance between the concave lens and the light-emitting layer, or the refractive index of the concave lens. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-109213 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-089474 Summary of the Invention [Problem to be solved by the invention]

[0005] However, it is often difficult to control the focusing characteristics solely by the radius of curvature of the convex lens or the refractive index of the convex lens, and to control the divergence characteristics solely by the radius of curvature of the concave lens, or the distance between the concave lens and the light-emitting layer, or the refractive index of the concave lens.

[0006] Therefore, an object of the present disclosure is to provide a display device having a configuration and structure in which a lens portion is arranged on the light emission side of a light-emitting element, and which can make the light emission from the light-emitting element closer to a desired state. [Means for solving the problem]

[0007] In order to achieve the above object, a display device according to a first aspect of the present disclosure comprises: The light emitting device includes a plurality of light emitting element units, each of which includes a first light emitting element having a first light emitting portion that emits light of a first color, a second light emitting element having a second light emitting portion that emits light of a second color, and a third light emitting element having a third light emitting portion that emits light of a third color; In each light-emitting element unit, a first base portion having a thickness TB1 is provided on the first light-emitting portion; A second base portion having a thickness TB2 is provided on the second light-emitting portion, a third base portion having a thickness TB3 is provided on the third light-emitting portion; A first lens portion having a thickness TL1 is provided on the first base portion, A second lens portion having a thickness TL2 is provided on the second base portion, A third lens portion having a thickness TL3 is provided on the third base portion, (TL3+TB3)≦(TL2+TB2)<(TL1+TB1) [However, this does not apply when the values ​​of TB3, TB2 and TB1 are the same] Satisfy.

[0008] In order to achieve the above object, a display device according to a second aspect of the present disclosure comprises: The light emitting device includes a plurality of light emitting element units each including at least a first light emitting element having a first light emitting portion that emits light of a first color and a second light emitting element having a second light emitting portion that emits light of a second color, In each light-emitting element unit, A first base portion having a thickness TB1 is provided above the first light-emitting portion, A second base portion having a thickness TB2 is provided above the second light-emitting portion, A first lens portion having a thickness TL1 is provided on the first base portion, TB2<(TL1+TB1) Satisfy. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic partial cross-sectional view of a display device according to a first embodiment. [Figure 2A] FIG. 2A is a schematic diagram of a lens portion and the like of one light-emitting element unit in Example 1 viewed from above. [Figure 2B] FIG. 2B is a schematic diagram of a lens portion and the like of one light-emitting element unit in Example 1 viewed from above. [Figure 3A] FIG. 3A is a schematic diagram of a lens portion and the like of one light-emitting element unit in Example 1 viewed from above. [Figure 3B] FIG. 3B is a schematic diagram of the lens portion and the like of one light-emitting element unit in Example 1 viewed from above. [Figure 4A] FIG. 4A is a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows AA and CC in FIG. 2A. [Figure 4B]FIG. 4B is a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows BB and DD in FIG. 2A. [Figure 5] FIG. 5 is a schematic partial cross-sectional view of a first modification of the display device of the first embodiment. [Figure 6] FIG. 6 is a schematic partial cross-sectional view of a second modified example of the display device of the first embodiment. [Figure 7] FIG. 7 is a schematic partial cross-sectional view of a third modified example of the display device of the first embodiment. [Figure 8] FIG. 8 is a schematic partial cross-sectional view of a display device according to a second embodiment. [Figure 9A] FIG. 9A is a schematic diagram of a lens portion and the like of one light-emitting element unit in Example 2 viewed from above. [Figure 9B] FIG. 9B is a schematic diagram of the lens portion and the like of one light-emitting element unit in Example 2 viewed from above. [Figure 10] FIG. 10 is a schematic diagram of a lens portion and the like of one light-emitting element unit in Example 2 viewed from above. [Figure 11A] FIG. 11A is a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows AA and CC in FIG. 9A. [Figure 11B] FIG. 11B is a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows BB and DD in FIG. 9A. [Figure 12] FIG. 12 is a schematic partial cross-sectional view of a first modification of the display device of the second embodiment. [Figure 13] FIG. 13 is a schematic partial cross-sectional view of a second modified example of the display device of the second embodiment. [Figure 14] FIG. 14 is a schematic partial cross-sectional view of a third modified example of the display device of the second embodiment. [Figure 15] FIG. 15 is a schematic partial cross-sectional view of a display device according to a third embodiment. [Figure 16] FIG. 16 is a schematic partial cross-sectional view of a first modification of the display device of the third embodiment. [Figure 17] FIG. 17 is a schematic partial cross-sectional view of a display device according to a fourth embodiment. [Figure 18] FIG. 18 is a schematic partial cross-sectional view of a first modified example of the display device of the fourth embodiment. [Figure 19] FIG. 19 is a schematic partial cross-sectional view of a second modified example of the display device of the fourth embodiment. [Figure 20] FIG. 20 is a schematic partial cross-sectional view of a display device according to a fifth embodiment. [Figure 21] FIG. 21 is a schematic partial cross-sectional view of a base portion and the like that constitutes the display device of Example 5. As shown in FIG. [Figure 22] FIG. 22 is a schematic partial cross-sectional view of a first modified example of the display device of the fifth embodiment. [Figure 23] FIG. 23 is a schematic diagram of a lens portion and the like of one light-emitting element unit in Modification 1 of the display device of Example 5, viewed from above. [Figure 24] FIG. 24 is a schematic partial cross-sectional view of a base portion and the like that constitutes the display device of Example 6. As shown in FIG. [Figure 25] FIG. 25 is a schematic partial cross-sectional view of a first modified example of the display device of the sixth embodiment. [Figure 26] FIG. 26 is a schematic partial cross-sectional view of a display device according to a seventh embodiment. [Figure 27] FIG. 27 is a schematic partial cross-sectional view of a first modified example of the display device of the seventh embodiment. [Figure 28A] FIG. 28A is a schematic diagram of a lens portion and the like of one light-emitting element unit in Example 7 and its Modification 1, viewed from above. [Figure 28B] FIG. 28B is a schematic diagram of the lens portion and the like of one light-emitting element unit in Example 7 and Modification 1 thereof, viewed from above. [Figure 29A] 29A is a schematic partial cross-sectional view of a lens portion and a base portion taken along arrows AA and CC in FIG. 28A in the display device of Example 7. FIG. [Figure 29B] FIG. 29B is a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows BB and DD in FIG. 28A. [Figure 30A]30A is a schematic partial cross-sectional view of a lens portion and a base portion taken along arrows AA and CC in FIG. 28B in Modification 1 of the display device of Example 7. FIG. [Figure 30B] FIG. 30B is a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows BB and DD in FIG. 28B. [Figure 31] FIG. 31 is a schematic partial cross-sectional view of a second modified example of the display device of the seventh embodiment. [Figure 32] FIG. 32 is a schematic partial cross-sectional view of a third modified example of the display device of the seventh embodiment. [Figure 33A] FIG. 33A is a schematic diagram of a lens portion and the like of one light-emitting element unit in Modifications 2 and 3 of Example 7, viewed from above. [Figure 33B] FIG. 33B is a schematic diagram of a lens portion and the like of one light-emitting element unit in Modifications 2 and 3 of Example 7, viewed from above. [Figure 34A] 34A is a schematic partial cross-sectional view of a lens portion and a base portion taken along arrows AA and CC in FIG. 33A in Modification 2 of the display device of Example 7. FIG. [Figure 34B] FIG. 34B is a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows BB and DD in FIG. 33A. [Figure 35A] 35A is a schematic partial cross-sectional view of a lens portion and a base portion taken along arrows AA and CC in FIG. 33B in Modification 3 of the display device of Example 7. FIG. [Figure 35B] FIG. 35B is a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows BB and DD in FIG. 33B. [Figure 36A] FIG. 36A is a conceptual diagram of a first example and a second example of light-emitting devices having a resonator structure. [Figure 36B] FIG. 36B is a conceptual diagram of the light-emitting devices of the first and second examples having a resonator structure. [Figure 37A] FIG. 37A is a conceptual diagram of a light-emitting device according to a third example and a fourth example, each having a resonator structure. [Figure 37B]FIG. 37B is a conceptual diagram of the light-emitting devices of the third and fourth examples having a resonator structure. [Figure 38A] FIG. 38A is a conceptual diagram of light-emitting devices of fifth and sixth examples having a resonator structure. [Figure 38B] FIG. 38B is a conceptual diagram of the light-emitting devices of the fifth and sixth examples having a resonator structure. [Figure 39A] FIG. 39A is a conceptual diagram of a seventh example of a light-emitting device having a resonator structure. [Figure 39B] FIG. 39B is a conceptual diagram of an eighth example of a light-emitting device having a resonator structure. [Figure 39C] FIG. 39C is a conceptual diagram of an eighth example of a light-emitting device having a resonator structure. [Figure 40] FIG. 40 is a schematic partial cross-sectional view of a display device according to a ninth embodiment. [Figure 41A] FIG. 41A is a schematic diagram showing the positional relationship between light-emitting elements and reference points in the display device of Example 9. FIG. [Figure 41B] FIG. 41B is a schematic diagram showing the positional relationship between the light-emitting elements and the reference point in the display device of Example 9. [Figure 42A] FIG. 42A is a diagram schematically showing the positional relationship between light-emitting elements and reference points in a modified example of the display device of Example 9. FIG. [Figure 42B] FIG. 42B is a diagram schematically showing the positional relationship between the light-emitting elements and the reference point in a modified example of the display device of Example 9. FIG. [Figure 43A] FIG. 43A is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 43B] FIG. 43B is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 43C] FIG. 43C is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 43D] FIG. 43D is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 44A] FIG. 44A is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 44B] FIG. 44B is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 44C] FIG. 44C is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 44D] FIG. 44D is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 45A] FIG. 45A is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 45B] FIG. 45B is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 45C] FIG. 45C is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 45D] FIG. 45D is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 46A] FIG. 46A is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 46B] FIG. 46B is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 46C] FIG. 46C is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 46D] FIG. 46D is a diagram showing a schematic diagram of a change in D0-X relative to a change in D1-X, and a change in D0-Y relative to a change in D1-Y. [Figure 47A]FIG. 47A is a conceptual diagram for explaining the relationship between a normal line LN passing through the center of the light emitting portion, a normal line LN' passing through the center of the lens portion, and a normal line LN" passing through the center of the wavelength selecting portion. [Figure 47B] FIG. 47B is a conceptual diagram for explaining the relationship between a normal line LN passing through the center of the light emitting section, a normal line LN' passing through the center of the lens section, and a normal line LN" passing through the center of the wavelength selecting section. [Figure 47C] FIG. 47C is a conceptual diagram for explaining the relationship between a normal line LN passing through the center of the light emitting portion, a normal line LN' passing through the center of the lens portion, and a normal line LN" passing through the center of the wavelength selecting portion. [Figure 48] FIG. 48 is a conceptual diagram for explaining the relationship between a normal line LN passing through the center of the light emitting section, a normal line LN' passing through the center of the lens section, and a normal line LN" passing through the center of the wavelength selecting section. [Figure 49A] FIG. 49A is a conceptual diagram for explaining the relationship between a normal line LN passing through the center of the light emitting portion, a normal line LN' passing through the center of the lens portion, and a normal line LN" passing through the center of the wavelength selecting portion. [Figure 49B] FIG. 49B is a conceptual diagram for explaining the relationship between a normal line LN passing through the center of the light emitting section, a normal line LN' passing through the center of the lens section, and a normal line LN" passing through the center of the wavelength selecting section. [Figure 50] FIG. 50 is a conceptual diagram for explaining the relationship between a normal line LN passing through the center of the light emitting portion, a normal line LN' passing through the center of the lens portion, and a normal line LN" passing through the center of the wavelength selecting portion. [Figure 51A] FIG. 51A is a schematic plan view and a schematic perspective view of a lens portion having a truncated quadrangular pyramid shape. [Figure 51B] FIG. 51B is a schematic plan view and a schematic perspective view of a lens portion having a truncated quadrangular pyramid shape. [Figure 52A] FIG. 52A is a schematic partial cross-sectional view of a base portion and the like for explaining a manufacturing method of the display device of Example 1. FIG. [Figure 52B] FIG. 52B is a schematic partial cross-sectional view of the base portion and the like for explaining the manufacturing method of the display device of Example 1. [Figure 52C]FIG. 52C is a schematic partial cross-sectional view of the base portion and the like for explaining the manufacturing method of the display device of Example 1. [Figure 52D] FIG. 52D is a schematic partial cross-sectional view of the base portion and the like for explaining the manufacturing method of the display device of Example 1. [Figure 53A] FIG. 53A is a schematic partial cross-sectional view of a base portion and the like for explaining a manufacturing method of the display device of Example 1. FIG. [Figure 53B] FIG. 53B is a schematic partial cross-sectional view of the base portion and the like for explaining the manufacturing method of the display device of Example 1. [Figure 53C] FIG. 53C is a schematic partial cross-sectional view of the base portion and the like for explaining the manufacturing method of the display device of Example 1. [Figure 54A] FIG. 54A is a diagram schematically illustrating an arrangement of light-emitting elements in the display device of Example 1. FIG. [Figure 54B] FIG. 54B is a diagram schematically showing an arrangement of light-emitting elements in the display device of Example 1. FIG. [Figure 54C] FIG. 54C is a diagram schematically showing an arrangement of light-emitting elements in the display device of Example 1. FIG. [Figure 54D] FIG. 54D is a diagram schematically showing an arrangement of light-emitting elements in the display device of Example 1. FIG. [Figure 55A] FIG. 55A is a front view of a digital still camera showing an example in which a display device according to the present disclosure is applied to a mirrorless digital still camera with interchangeable lenses. [Figure 55B] FIG. 55B is a rear view of a digital still camera showing an example in which the display device of the present disclosure is applied to a mirrorless digital still camera with interchangeable lenses. [Figure 56A] FIG. 56A is a diagram showing a state in which the luminance of a light-emitting element decreases over time, and a diagram showing a state in which the luminance of a light-emitting element decreases depending on the viewing angle, respectively. [Figure 56B] FIG. 56B is a diagram showing a state in which the luminance of a light-emitting element decreases over time, and a diagram showing a state in which the luminance of a light-emitting element decreases depending on the viewing angle, respectively. [Figure 57]FIG. 57 is a schematic diagram for explaining that the amount of light incident on the lens portion increases as the distance from the light emitting portion to the light exit surface of the lens portion increases. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present disclosure will be described below based on examples with reference to the drawings, but the present disclosure is not limited to the examples, and various numerical values ​​and materials in the examples are merely examples. The description will be made in the following order. 1. General Description of Display Devices According to First and Second Aspects of the Present Disclosure 2. Example 1 (Display Device According to the First Aspect of the Present Disclosure) 3. Example 2 (Modification of Example 1) 4. Example 3 (Modification of Examples 1 and 2) 5. Example 4 (Modification of Examples 1 to 3) 6. Example 5 (Modification of Examples 1 to 4) 7. Example 6 (Modification of Examples 1 to 5) 8. Example 7 (Display Device According to the Second Aspect of the Present Disclosure) 9. Example 8 (Modification of Examples 1 to 7) 10. Example 9 (Modification of Examples 1 to 8) 11.Other

[0011] <General Description of Display Devices According to First and Second Aspects of the Present Disclosure> In the display device according to the first aspect of the present disclosure, (TL3+TB3)≦(TL2+TB2)<(TL1+TB1) Although it satisfies (TL3+TB3)<(TL2+TB2) If so, specifically, 1.05≦(TL2+TB2) / (TL3+TB3) Preferably, 1.05≦(TL2+TB2) / (TL3+TB3)≦2.5 It is preferable that the following be satisfied. 1.05≦(TL1+TB1) / (TL2+TB2) 1.1 ≦(TL1+TB1) / (TL3+TB3) Preferably, 1.05≦(TL1+TB1) / (TL2+TB2)≦2.5 1.1 ≦(TL1+TB1) / (TL3+TB3)≦3.0 However, it is not limited to the above range.

[0012] In addition, in the display device according to the second aspect of the present disclosure, TB2<(TL1+TB1) Specifically, 1.1≦(TL1+TB1) / TB2≦10 Preferably, 1.5≦(TL1+TB1) / TB2≦3 However, it is not limited to the above range.

[0013] In the display device according to the first aspect of the present disclosure, in each light-emitting element unit, the side surface of the base may be configured not to be in contact with the side surface of the base adjacent to the base. By configuring in this manner, the side surface of the base has a refractive index n B A refractive index lower than n MThis allows the base to be in contact with a material having the above-mentioned property, thereby imparting a lens effect or waveguide effect to the base and further improving the light-collecting effect of the lens portion. The minimum distance between the side surfaces of adjacent base portions can be, but is not limited to, 0.4 μm to 1.2 μm, preferably 0.6 μm to 1.2 μm, more preferably 0.8 μm to 1.2 μm, and even more preferably 0.8 μm to 1.0 μm. By specifying the minimum value of the minimum distance between the side surfaces of adjacent base portions as 0.4 μm, the minimum distance between adjacent base portions can be made approximately equal to the lower limit of the wavelength band of visible light, thereby suppressing deterioration of the functionality of the material or layer surrounding the base portion and effectively enhancing the light-collecting effect near the side surface of the base. On the other hand, by specifying the maximum value of the minimum distance between the side surfaces of adjacent base portions as 1.2 μm, the size of the base portion can be reduced, thereby effectively enhancing the light-collecting effect near the side surface of the base portion.

[0014] Alternatively, in each light-emitting element unit, the side surface of the base may be in contact with the side surface of the base adjacent to the base. This configuration simplifies the manufacturing process of the display device. Even in this configuration, a portion of the side surface of some of the bases may not be in contact with the side surface of the base adjacent to the base.

[0015] In the display device according to the first aspect of the present disclosure, which includes the preferred embodiments described above, in each light-emitting element unit, the light-emitting portion can be configured to include a first electrode, an organic layer (including a light-emitting layer), and a second electrode.

[0016] Furthermore, in the display device according to the first aspect of the present disclosure including the preferred embodiments described above, the first light emitting unit has a first wavelength selecting unit on the light emitting side, the second light emitting unit has a second wavelength selecting unit on the light emitting side, The third light emitting section may have a third wavelength selecting section on the light emitting side.

[0017] The wavelength selection section can be composed of, for example, a color filter layer. The color filter layer is composed of a resin to which a colorant made of a desired pigment or dye has been added. The pigment or dye is selected to adjust the light transmittance to be high in the desired wavelength range, such as red, green, or blue, and low in other wavelength ranges. Alternatively, the wavelength selection section can be composed of a photonic crystal, a wavelength selection element that applies plasmons (a color filter layer having a conductive lattice structure in which a lattice-shaped hole structure is provided in a conductive thin film; see, for example, JP 2008-177191 A), a thin film made of an inorganic material such as amorphous silicon, or quantum dots. Hereinafter, the wavelength selection section will sometimes be described using a color filter layer as a representative example, but the wavelength selection section is not limited to a color filter layer.

[0018] By forming a light absorbing layer (black matrix layer) between the wavelength selecting sections of adjacent light emitting elements, it is possible to reliably suppress the occurrence of color mixing between adjacent light emitting elements. The size of the wavelength selecting section (e.g., color filter layer) may be changed appropriately in accordance with the light emitted by the light emitting element, and when a light absorbing layer (black matrix layer) is provided between the wavelength selecting sections (e.g., color filter layers) of adjacent light emitting elements, the size of the light absorbing layer (black matrix layer) may be changed appropriately in accordance with the light emitted by the light emitting element.

[0019] The display device according to the first and second aspects of the present disclosure may, for example, a first substrate and a second substrate, a light-emitting portion provided above the first substrate; a base provided on the light-emitting portion; a lens portion disposed on the base portion; and a sealing resin layer provided between the lens portion and the second substrate; It is composed of:

[0020] Here, when the light-emitting section has a wavelength selection section, a base section is provided on the light-emitting section, specifically, on the wavelength selection section. However, this is not limited to this form, and the wavelength selection section may be provided between the second substrate and the sealing resin layer, or the wavelength selection section may be provided between the sealing resin layers. The arrangement of the wavelength selection section described above can be applied to the display device according to the second aspect of the present disclosure.

[0021] In the display device according to the first aspect of the present disclosure, including the preferred embodiment described above, the thickness of the light-emitting section in each light-emitting element unit may be the same for the first light-emitting section, the second light-emitting section, and the third light-emitting section, or the thickness of the light-emitting section may be different for the first light-emitting section, the second light-emitting section, and the third light-emitting section. Specifically, when the thickness of the first light-emitting section is t1, the thickness of the second light-emitting section is t2, and the thickness of the third light-emitting section is t3, [a] Case where t1=t2, t1=t3, t2=t3 are satisfied [b] Cases where t1≠t2, t1≠t3, t2≠t3 are satisfied [c] Cases where t1≠t2, t1=t3, t2≠t3 are satisfied [d] Cases where t1≠t2, t1≠t3, t2=t3 are satisfied [e] Cases where t1=t2, t1≠t3, t2≠t3 are satisfied [f] Cases where t1≠t2, t1=t3, t2=t3 are satisfied [g] Cases where t1=t2, t1≠t3, t2=t3 are satisfied [h] Cases where t1=t2, t1=t3, t2≠t3 are satisfied There is.

[0022] In the display device according to the first aspect of the present disclosure, including the preferred embodiment described above, the lens portion of each light-emitting element unit can be configured to be convex in a direction away from the light-emitting portion. In this case, light emitted from the light-emitting portion passes through the base and lens portion, and then passes through the sealing resin layer and second substrate before being emitted to the outside, and it is desirable to decrease the refractive index in the order of the refractive index of the material constituting the base, the refractive index of the material constituting the lens portion, the refractive index of the material constituting the sealing resin layer, and the refractive index of the material constituting the second substrate. In some cases, the refractive index of the material constituting the base and the refractive index of the material constituting the lens portion may have the same value. That is, The refractive index of the first base material constituting the first base is n B-1 , The refractive index of the second base material constituting the second base is n B-2 , The refractive index of the third base material is n B-3 , The refractive index of the material of the first lens section is n L-1 , The refractive index of the material constituting the second lens section is n L-2 , The refractive index of the material constituting the third lens section is n L-3 , When n B-1 ≧n L-1 n B-2 ≧n L-2 n B-3 ≧n L-3 That is, the following can be satisfied. n B-1 =n L-1 (1-1) n B-2 =n L-2 (1-2) n B-3 =n L-3 (1-3) Alternatively, the present invention may be configured to satisfy the following: n B-1 >n L-1(2-1) n B-2 >n L-2 (2-2) n B-3 >n L-3 (2-3) It is possible to make the configuration satisfying the following. [A] Cases where formulas (1-1), (1-2), and (1-3) are satisfied [B] Cases where formulas (2-1), (2-2), and (2-3) are satisfied And in some cases, [C] Cases where formulas (1-1), (2-2), and (2-3) are satisfied [D] Cases where formulas (1-2), (2-1), and (2-3) are satisfied [E] Cases that satisfy formula (1-3), formula (2-1), and formula (2-2) [F] Cases that satisfy formula (1-1), formula (1-2), and formula (2-3) [G] Cases that satisfy formula (1-1), formula (1-3), and formula (2-2) [H] Cases that satisfy formula (1-2), formula (1-3), and formula (2-1) There are also.

[0023] To satisfy formula (1-1), formula (1-2), or formula (1-3), for example, the lens component material and the base component material may be the same material, but this is not limitative and different materials may also be used.Furthermore, to satisfy formula (2-1), formula (2-2), or formula (2-3), for example, the lens component material and the base component material may be different materials.

[0024] Although not limited thereto, in formula (2-1), formula (2-2) or formula (2-3), 0.01≦(n B-1 -n L-1 )≦0.1 0.01≦(n B-2 -n L-2 )≦0.1 0.01≦(n B-3 -n L-3 )≦0.1 It is preferable to satisfy the following.

[0025] Alternatively, in each light-emitting element unit, the lens portion can be configured to be concave in the direction away from the light-emitting portion. In this case, the light emitted from the light-emitting portion passes through the sealing resin layer, the base portion, and the lens portion, and then passes through the second substrate to be emitted to the outside, and it is desirable to increase the refractive index in the order of the refractive index of the material constituting the sealing resin layer, the refractive index of the material constituting the base portion, the refractive index of the material constituting the lens portion, and the refractive index of the material constituting the second substrate. In some cases, the refractive index of the material constituting the base portion and the refractive index of the material constituting the lens portion may have the same value. That is, n B-1 ≦n L-1 n B-2 ≦n L-2 n B-3 ≦n L-3 That is, the following can be satisfied. n B-1 =n L-1 (3-1) n B-2 =n L-2 (3-2) n B-3 =n L-3 (3-3) Alternatively, the present invention may be configured to satisfy the following: n B-1 <n L-1 (4-1) n B-2 <n L-2 (4-2) n B-3 <n L-3 (4-3) It is possible to make the configuration satisfying the following. [A'] Cases that satisfy formula (4-1), formula (4-2), and formula (4-3) And in some cases, [B'] Cases that satisfy formula (3-1), formula (4-2), and formula (4-3) [C'] Cases that satisfy formula (3-2), formula (4-1), and formula (4-3) [D'] Cases that satisfy formula (3-3), formula (4-1), and formula (4-2) [E'] Cases that satisfy formula (3-1), formula (3-2), and formula (4-3) [F'] Cases that satisfy formula (3-1), formula (3-3), and formula (4-2) [G'] Cases that satisfy formula (3-2), formula (3-3), and formula (4-1) There are also.

[0026] To satisfy formula (3-1), formula (3-2), or formula (3-3), for example, the lens component material and the base component material may be the same material, but this is not limitative and different materials may also be used.Furthermore, to satisfy formula (4-1), formula (4-2), or formula (4-3), for example, the lens component material and the base component material may be different materials.

[0027] Although not limited thereto, in formula (4-1), formula (4-2) or formula (4-3), 0.1≦(n L-1 -n B-1 )≦0.7 0.1≦(n L-2 -n B-2 )≦0.7 0.1≦(n L-3 -n B-3 )≦0.7 It is preferable to satisfy the following.

[0028] Alternatively, each light-emitting element unit may have a configuration in which lens portions that are convex in the direction away from the light-emitting portion and lens portions that are concave in the direction away from the light-emitting portion are mixed together. In this case, the refractive indexes of the convex lens portions and the concave lens portions may satisfy the various conditions described above.

[0029] Alternatively, in the display device according to the first aspect of the present disclosure, in each light-emitting element unit, The first base portion has a laminated structure of a first L base portion, a first M base portion, and a first H base portion from the light emitting portion side, The second base portion has a laminated structure of a second L base portion and a second H base portion from the light-emitting portion side, The first L base and the second L base are formed from an extension of the third base, The first M-base portion may be configured as an extension of the second H-base portion. For convenience, the display device according to the first aspect of the present disclosure having such a configuration may be referred to as a "display device according to the first-A aspect of the present disclosure."

[0030] In the display device according to the first aspect of the present disclosure, The refractive index of the material constituting the first H base is n B-1H ', The refractive index of the second H-base constituent material constituting the second H-base and the extension of the second H-base is n B-2H ', the refractive index of the third base portion constituent material constituting the third base portion and the third base portion extension portion is n B-3 ' When, n B-3 '>n B-2H '>n B-1H ' It is preferable to satisfy the following, but not limited to: 0.02≦(n B-3 '-n B-2H ') 0.02≦(n B-2 '-n B-1H ') 0.02≦(n B-3 '-n B-1H ') It is preferable to satisfy 0.05≦(n B-3 '-n B-2H ')≦0.2 0.05≦(n B-2 '-n B-1H ')≦0.2 0.05≦(n B-3 '-n B-1H ')≦0.2 It is more preferable to satisfy this condition. Thus, the light emitted from the light-emitting portion passes through the base portion. In the base portion having a laminated structure, it is desirable that the refractive index of the material constituting each layer gradually decreases as the distance from the light-emitting portion increases. And in this case, in each light-emitting element unit, the lens portion can be configured to be convex in the direction away from the light-emitting portion.

[0031] Furthermore, in the display device according to the first-A aspect of the present disclosure, the orthographic image of the first lens portion of the first light-emitting element and the orthographic image of the lens portion of the light-emitting element adjacent to the first light-emitting element can be in a form that partially overlaps. Note that the orthographic image is, in principle, the orthographic image on the light-emitting portion. [[ID= 6]]

[0032] In the display device according to the second aspect of the present disclosure, the light-emitting element unit further includes a third light-emitting element that emits light of a third color, in each light-emitting element unit, a third base portion with a thickness TB3 is provided above the third light-emitting portion, TB3≦TB2<(TL1+TB1) It can be in a form that satisfies this condition. Here, without limitation, when TB3<TB2, specifically, 1.05≦TB2 / TB3 Preferably, 1.1≦TB2 / TB3≦5 It is desirable to satisfy this condition. Also, specifically, 1.1≦(TL1+TB1) / TB2<00,00744>Preferably, 1.5≦(TL1+TB1) / TB2≦3 It is desirable to satisfy this condition.

[0033] Alternatively, in the display device according to the second aspect of the present disclosure, a second lens portion with a thickness TL2 is provided on the second base portion, (TL2+TB2)<(TL1+TB1) It can be in a form that satisfies the following. Here, without limitation, specifically, 1.1 ≦ (TL1 + TB1) / (TL2 + TB2) Preferably, 1.5 ≦ (TL1 + TB1) / (TL2 + TB2) ≦ 3 it is desirable to satisfy the above. And in this case, the light - emitting element unit further includes a third light - emitting element having a third light - emitting portion that emits a third color, in each light - emitting element unit, above the third light - emitting portion, a third base portion with a thickness TB3 is provided, [[ID=1,6]]TB3 ≦ TB2 < (TL1 + TB1) It can be in a form that satisfies the following. Here, without limitation, when TB3 < TB2, specifically, 1.05 ≦ TB2 / TB3 Preferably, 1.1 ≦ TB2 / TB3 ≦ 5 it is desirable to satisfy the above. Also, specifically, 1.1 ≦ (TL1 + TB1) / TB2 Preferably, 1.5 ≦ (TL1 + TB1) / TB2 ≦ 3 it is desirable to satisfy the above.

[0034] In the display device according to the second aspect of the present disclosure including the various preferred forms described above, when the second lens portion is not provided, the top surface of the second base portion and the top surface of the third base portion may be flat, may have a convex shape upward, or may have a concave shape.

[0035] In the display device according to the first aspect to the second aspect of the present disclosure including the various preferred forms described above (hereinafter, these display devices may be collectively referred to as, for convenience, 'the display device etc. of the present disclosure'), still, (TL3 + TB3) ≦ (TL2 + TB2) < (TL1 + TB1) [Provided that the case where the values of TB3, TB2, and TB1 are the same is excluded] TL1, TL2, and TL3 may have the same value as long as they satisfy the above requirement. Alternatively, TB1, TB2, and TB3 may have different values. However, it may be a different value. [Case 1-1] TL1=TL2, TL1=TL3, TL2=TL3 [Case 1-2] TL1 = TL2, TL1 = TL3, TL2 ≠ TL3 [Case 1-3] TL1 = TL2, TL1 ≠ TL3, TL2 = TL3 [Case 1-4] TL1≠TL2, TL1=TL3, TL2=TL3 [Case 1-5] TL1 ≠ TL2, TL1 ≠ TL3, TL2 = TL3 [Case 1-6] TL1 ≠ TL2, TL1 = TL3, TL2 ≠ TL3 [Case 1-7] TL1 = TL2, TL1 ≠ TL3, TL2 ≠ TL3 [Case 1-8] TL1 ≠ TL2, TL1 ≠ TL3, TL2 ≠ TL3 [Case 2-1] TB1 = TB2, TB1 = TB3, TB2 ≠ TB3 [Case 2-2] TB1 = TB2, TB1 ≠ TB3, TB2 = TB3 [Case 2-3] TB1≠TB2, TB1=TB3, TB2=TB3 [Case 2-4] TB1≠TB2, TB1≠TB3, TB2=TB3 [Case 2-5] TB1≠TB2, TB1=TB3, TB2≠TB3 [Case 2-6] TB1 = TB2, TB1 ≠ TB3, TB2 ≠ TB3 [Case 2-7] TB1 ≠ TB2, TB1 ≠ TB3, TB2 ≠ TB3 Assuming that there are 8 x 7 = 56 possible combinations of [Case 1] and [Case 2], the case to be selected can be determined appropriately depending on the specifications required for the display device. From the viewpoint of simplifying the manufacturing process, it is preferable to adopt [Case 1-1], but this is not limiting.

[0036] In the display device etc. of the present disclosure, the light-emitting portion may include an organic electroluminescence layer. That is, the display device etc. of the present disclosure may be configured as an organic electroluminescence display device (organic EL display device). Here, the display device etc. of the present disclosure is a top-emission type (top-emitting type) display device (top-emitting display device) that emits light from the second substrate.

[0037] The light (image) emitted from the entire display device is a converging system, but the degree of converging system depends on the specifications of the display device, as well as the degree of viewing angle dependency and wide viewing angle characteristics required of the display device.

[0038] In the display devices and the like of the present disclosure, including the various preferred embodiments described above, the lens portion may be hemispherical or may be configured as a portion of a sphere, or may be configured as a shape suitable for functioning as a lens. Specifically, the lens portion may be configured as a convex lens portion (on-chip micro convex lens) or as a concave lens portion (on-chip micro concave lens). The lens portion may be a spherical lens or an aspherical lens. Furthermore, the convex lens portion may be configured as a plano-convex lens, and the concave lens portion may be configured as a plano-concave lens. Furthermore, the lens portion may be a refractive lens or a diffractive lens.

[0039] Alternatively, the lens portion may be a rectangular parallelepiped with a square or rectangular bottom, with four side surfaces and one top surface having a convex shape, with rounded edges where the side surfaces meet and rounded edges where the top surface meets the side surfaces, resulting in a rounded three-dimensional shape overall. Alternatively, the lens portion may be a rectangular parallelepiped with a square or rectangular bottom (including a cube approximating a rectangular parallelepiped), with four side surfaces and one top surface having a flat shape, in which case, in some cases, the edges where the side surfaces meet and rounded edges where the top surface meets the side surfaces may also be rounded, resulting in a three-dimensional shape. Alternatively, the lens portion may be configured such that the cross-sectional shape when cut along an imaginary plane (vertical imaginary plane) including the thickness direction is rectangular or isosceles trapezoid. In other words, the lens portion may have a cross-sectional shape that is constant or that varies along the thickness direction.

[0040] The lens portion (on-chip microlens) is made of, for example, a transparent resin material such as an acrylic resin, an epoxy resin, a polycarbonate resin, or a polyimide resin, or a transparent inorganic material such as SiO2. The base can also be made of, for example, a transparent resin material such as an acrylic resin, an epoxy resin, a polycarbonate resin, or a polyimide resin, or a transparent inorganic material such as SiO2, but is not limited to these. It's not that.

[0041] The lens portion can be obtained by melt flowing the transparent resin material that constitutes the lens portion, or by etching back, or by a combination of photolithography technology using a gray-tone mask or a half-tone mask and an etching method, or by forming a transparent resin material into a lens shape based on a nanoimprint method. Materials that constitute the lens portion (microlens) can include high-refractive index resin materials (for convex lenses), high-refractive index inorganic materials (for convex lenses), low-refractive index resin materials (for concave lenses), and low-refractive index inorganic materials (for concave lenses).

[0042] The distance between axes passing through the centers of adjacent lens portions is preferably 1 μm or more and 10 μm or less. Note that the center of a lens portion refers to the center of gravity of the planar shape of the lens portion.

[0043] As described above, the light-emitting section is composed of, from the first substrate side, a first electrode, an organic layer (including a light-emitting layer), and a second electrode. The first electrode may be configured to be in contact with a portion of the organic layer, or the organic layer may be configured to be in contact with a portion of the first electrode. Specifically, the size of the first electrode may be smaller than the organic layer, or the size of the first electrode may be the same as that of the organic layer but an insulating layer may be formed in a portion between the first electrode and the organic layer, or the size of the first electrode may be larger than the organic layer. The size of the organic layer refers to the size of the region where the first electrode and the organic layer are in contact (light-emitting region). The size of the light-emitting region may be changed depending on the color of light emitted by the light-emitting element.

[0044] Specific examples of the three-dimensional shape of the base include a cylinder, an elliptical cylinder, an oblong cylinder, a prism (including a square prism, a hexagonal prism, an octagonal prism, and a prism with rounded edges), a truncated cone, and a truncated pyramid (including a truncated pyramid with rounded edges). Prisms and truncated pyramids include regular prisms and regular truncated pyramids. The edges where the side surfaces and the top surfaces of the base intersect may be rounded. The bottom of the truncated pyramid may be located on the first substrate side or the second electrode side. Specific examples of the planar shape of the base include circles, ellipses, ovals, and polygons, including triangles, squares, hexagons, and octagons. Polygons include regular polygons, including rectangles and regular hexagons (honeycomb shapes).

[0045] The cross-sectional shape of the side surface of the base in the thickness direction may be linear, convexly curved, or concavely curved. That is, the side surface of the above-mentioned prism or truncated pyramid may be flat, convexly curved, or concavely curved.

[0046] As described above, when the side surface of the base is not in contact with the side surface of the base adjacent to this base, the side surface of the base has a refractive index n B A refractive index lower than n M This allows the base to be in contact with a material having this property, thereby imparting a type of lens effect or waveguide effect to the base and further improving the light-collection efficiency of the lens portion. From a geometric optics perspective, when light is incident on the side surface of the base, the angle of incidence and the angle of reflection are equal, making it difficult to improve the light extraction efficiency in the front direction. However, from a wave analysis perspective (FDTD), the light extraction efficiency near the side surface of the base is improved, resulting in an improvement in the light extraction efficiency near the outer edge of the lens portion corresponding to the side surface of the base. Therefore, light near the outer edge of the light-emitting element can be effectively collected, thereby improving the light extraction efficiency of the entire light-emitting element in the front direction. This results in a highly efficient light emission of the display device. This means that the display device can achieve high brightness and low power consumption.

[0047] The side surface of the base is preferably vertical or approximately vertical. Specifically, the inclination angle of the side surface of the base can be 80 to 100 degrees, preferably 81.8 to 98.2 degrees, more preferably 84 to 96 degrees, even more preferably 86 to 94 degrees, particularly preferably 88 to 92 degrees, and most preferably 90 degrees.

[0048] Furthermore, in the display devices and the like of the present disclosure, including the various preferred embodiments described above, it is preferable that the planar shape of the lens section is similar to that of the light-emitting region. Alternatively, it is preferable that the light-emitting region is included in the orthogonal projection image of the lens section (orthogonal projection image on the light-emitting section). However, this is not limited thereto, and the orthogonal projection image of the lens section on the light-emitting section can be the same as the orthogonal projection image of the wavelength selection section on the light-emitting section, or can be included in the orthogonal projection image of the wavelength selection section on the light-emitting section. By adopting the latter configuration, it is possible to reliably suppress the occurrence of color mixing between adjacent light-emitting elements.

[0049] The size of the planar shape of the lens portion may vary depending on the light-emitting element. For example, if one pixel is composed of three sub-pixels, the size of the planar shape of the lens portion may be the same for all three sub-pixels constituting the pixel, or may be the same for two sub-pixels excluding one sub-pixel, or may be different for all three sub-pixels. Furthermore, the refractive index of the material constituting the lens portion may vary depending on the light-emitting element. For example, if one pixel is composed of three sub-pixels, the refractive index of the material constituting the lens portion may be the same for all three sub-pixels constituting the pixel, or may be the same for two sub-pixels excluding one sub-pixel, or may be different for all three sub-pixels.

[0050] When one pixel is made up of multiple sub-pixels, one lens portion may be provided corresponding to one sub-pixel, or multiple lens portions may be provided corresponding to one sub-pixel.

[0051] Furthermore, in these cases, the distance D0 [as will be described later, the distance between the normal line passing through the center of the light-emitting part and the lens In a light emitting element in which the value of the distance D0 is not 0, the normal line passing through the center of the wavelength selection section and the normal line passing through the center of the light emitting section can be configured to coincide with each other. Alternatively, in a light emitting element in which the value of the distance D0 is not 0, the normal line passing through the center of the wavelength selection section and the normal line passing through the center of the light emitting section can be configured to coincide with each other. The normal line passing through the center and the normal line passing through the center of the lens portion can be made to coincide with each other. By adopting the latter configuration, it is possible to reliably suppress the occurrence of color mixing between adjacent light-emitting elements.

[0052] The center of the wavelength selecting portion refers to the centroid of the area occupied by the wavelength selecting portion. Alternatively, if the planar shape of the wavelength selecting portion is a circle, ellipse, square, rectangle, or regular polygon, the center of these shapes corresponds to the center of the wavelength selecting portion. If these shapes are shapes with parts cut out, the center of the shape obtained by completing the cut-out parts corresponds to the center of the wavelength selecting portion. If these shapes are shapes with connected parts, the center of the shape obtained by removing the connected parts and completing the removed parts corresponds to the center of the wavelength selecting portion.

[0053] A light absorbing layer (black matrix layer) may be formed between the wavelength selection portions of adjacent light emitting elements.

[0054] The size of the wavelength selection section (for example, a color filter layer) is appropriately changed according to the distance (offset amount) d0 between the normal line passing through the center of the light emitting section and the normal line passing through the center of the color filter layer. The planar shape of the wavelength selection portion (for example, a color filter layer) may be the same as, similar to, or different from the planar shape of the lens portion.

[0055] The light absorbing layer (black matrix layer) formed between the wavelength selective portions of adjacent light emitting elements, or the light absorbing layer (black matrix layer) formed between the wavelength selective portions of adjacent light emitting elements, is made of, for example, a black resin film (specifically, black polyimide resin, for example) mixed with a black colorant and having an optical density of 1 or more, or is composed of a thin film filter utilizing thin film interference. The thin film filter is made of, for example, two or more laminated thin films made of metal, metal nitride, or metal oxide, and attenuates light by utilizing thin film interference. Specific examples of thin film filters include those made by alternately laminating Cr and chromium (III) oxide (Cr2O3).

[0056] In each light-emitting element, when the distance (offset amount) between the normal line LN passing through the center of the light-emitting part and the normal line LN' passing through the center of the lens part is D0, In some cases, the value of the distance (offset amount) D0 may be set to a value other than 0. In addition, in the display device, a reference point (reference area) P is assumed, and the distance D0 is the reference The shape depends on the distance D1 from the point (reference area) P to the normal LN passing through the center of the light-emitting part. The reference point (reference area) may have a certain extent. Here, various normals are lines perpendicular to the light-emitting surface of the display device. The center of the light-emitting portion refers to the centroid of the area where the first electrode and the organic layer are in contact. In the sub-pixels that make up one pixel, the distance D0 can be changed. That is, the distance D0 may be changed among the plurality of light-emitting elements that make up one pixel. .

[0057] For example, if one pixel is made up of three sub-pixels, the value of D0 is the sum of the sub-pixels that make up one pixel. The values ​​may be the same for all three sub-pixels, or may be the same for two sub-pixels except for one sub-pixel, or may be different for all three sub-pixels.

[0058] In the display device etc. of the present disclosure, the pixel (or sub-pixel) arrangement may be a delta arrangement, or may be a stripe arrangement, a diagonal arrangement, a rectangular arrangement, or a pentile arrangement. The arrangement of the wavelength selection section may also be a delta arrangement, a stripe arrangement, a diagonal arrangement, a rectangular arrangement, or a pentile arrangement in accordance with the pixel (or sub-pixel) arrangement.

[0059] Hereinafter, focusing on the light-emitting portion, a description will be given of an embodiment in which the light-emitting portion constituting the light-emitting element includes an organic electroluminescence layer, that is, an embodiment in which the display device of the present disclosure is an organic electroluminescence display device (organic EL display device).

[0060] Organic EL display devices are A first substrate, a second substrate, and a plurality of light-emitting elements arranged two-dimensionally between the first substrate and the second substrate; It is equipped with Each light emitting element provided on a base formed on the first substrate is first electrode, A second electrode, and an organic layer (including a light-emitting layer made of an organic electroluminescent layer) sandwiched between a first electrode and a second electrode; and The light from the organic layer is emitted to the outside through the second substrate.

[0061] The organic layer can be configured to emit white light. In this case, the organic layer can be configured to be composed of at least two light-emitting layers that emit different colors. Specifically, the organic layer can have a laminated structure in which three layers are stacked: a red light-emitting layer that emits red light (wavelength: 620 nm to 750 nm), a green light-emitting layer that emits green light (wavelength: 495 nm to 570 nm), and a blue light-emitting layer that emits blue light (wavelength: 450 nm to 495 nm), and the organic layer as a whole emits white light. Alternatively, the organic layer can have a two-layer structure in which two layers are stacked: a blue light-emitting layer that emits blue light and a yellow light-emitting layer that emits yellow light, and the organic layer as a whole emits white light. Alternatively, the organic layer can have a two-layer structure in which two layers are stacked: a blue light-emitting layer that emits blue light and an orange light-emitting layer that emits orange light, and the organic layer as a whole emits white light. The organic layer may be common to multiple light-emitting elements, or may be provided individually for each light-emitting element. A red light-emitting element is formed by combining such an organic layer emitting white light with a red color filter layer (or an intermediate layer functioning as a red color filter layer), a green light-emitting element is formed by combining an organic layer emitting white light with a green color filter layer (or an intermediate layer functioning as a green color filter layer), and a blue light-emitting element is formed by combining an organic layer emitting white light with a blue color filter layer (or an intermediate layer functioning as a blue color filter layer). One pixel is formed by combining sub-pixels such as a red light-emitting element, a green light-emitting element, and a blue light-emitting element. In some cases, one pixel may be formed by a red light-emitting element, a green light-emitting element, a blue light-emitting element, and a light-emitting element that emits white (or a fourth color) (or a light-emitting element that emits complementary color light). In a configuration formed by at least two light-emitting layers that emit different colors, the light-emitting layers that emit different colors may actually be mixed and not clearly separated into each layer.

[0062] Alternatively, the organic layer may be configured to consist of a single light-emitting layer. In this case, the light-emitting element may be configured, for example, of a red light-emitting element having an organic layer including a red light-emitting layer, a green light-emitting element having an organic layer including a green light-emitting layer, or a blue light-emitting element having an organic layer including a blue light-emitting layer. In the case of a color display device, one pixel is configured from these three types of light-emitting elements (sub-pixels). Alternatively, the pixel may be configured from a stacked structure of a red light-emitting element having an organic layer including a red light-emitting layer, a green light-emitting element having an organic layer including a green light-emitting layer, and a blue light-emitting element having an organic layer including a blue light-emitting layer. In principle, the formation of a color filter layer is not necessary, but a color filter layer may be provided to improve color purity.

[0063] Alternatively, a light-emitting element having an organic layer constituted by a single light-emitting layer may be combined with a light-emitting element having the above-mentioned organic layer emitting white light. Specifically, for example, one pixel may be constituted by a blue light-emitting element having an organic layer containing a blue light-emitting layer, a red light-emitting element combining an organic layer emitting white light with a red color filter layer (or an intermediate layer functioning as a red color filter layer), and a green light-emitting element combining an organic layer emitting white light with a green color filter layer (or an intermediate layer functioning as a green color filter layer).

[0064] The base is formed on or above the first substrate. Examples of materials constituting the base include insulating materials such as SiO2, SiN, and SiON. The film can be formed based on a forming method suitable for the material to be formed, specifically, for example, a known method such as various CVD methods, various coating methods, various PVD methods including sputtering and vacuum deposition, various printing methods such as screen printing, plating, electrodeposition, immersion, or sol-gel method.

[0065] A light-emitting element driving section is provided below or below the base, although this is not limited thereto. The light-emitting element driving section is composed of, for example, transistors (specifically, MOSFETs, for example) formed on a silicon semiconductor substrate constituting the first substrate, or thin-film transistors (TFTs) provided on various substrates constituting the first substrate. The transistors or TFTs constituting the light-emitting element driving section and the first electrode may be connected via contact holes (contact plugs) formed in the base or the like. The light-emitting element driving section may have a well-known circuit configuration. The second electrode is connected to the light-emitting element driving section via contact holes (contact plugs) formed in the base or the like at the periphery of the display device. The light-emitting elements are formed on the first substrate side. The second electrode may be a common electrode for a plurality of light-emitting elements. In other words, the second electrode may be a so-called solid electrode.

[0066] The first or second substrate can be a silicon semiconductor substrate, a high strain point glass substrate, a soda glass (Na2O·CaO·SiO2) substrate, a borosilicate glass (Na2O·B2O3·SiO2) substrate, a forsterite (2MgO·SiO2) substrate, or a lead glass (Na2O·PbO·SiO2) substrate. The substrate can be made of various glass substrates with an insulating material layer formed on its surface, a quartz substrate, a quartz substrate with an insulating material layer formed on its surface, or an organic polymer (in the form of a polymer material such as a flexible plastic film, plastic sheet, or plastic substrate made of a polymer material) exemplified by polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polyvinylphenol (PVP), polyethersulfone (PES), polyimide, polycarbonate, polyethylene terephthalate (PET), or polyethylene naphthalate (PEN). The materials making up the first and second substrates may be the same or different. However, because it is a top-emitting display device, the second substrate is required to be transparent to light from the light-emitting element.

[0067] When the first electrode functions as an anode electrode, examples of materials constituting the first electrode include metals or alloys with high work functions, such as platinum (Pt), gold (Au), silver (Ag), chromium (Cr), tungsten (W), nickel (Ni), copper (Cu), iron (Fe), cobalt (Co), and tantalum (Ta) (e.g., an Ag-Pd-Cu alloy containing silver as the main component, 0.3 to 1% by mass of palladium (Pd), and 0.3 to 1% by mass of copper (Cu), an Al-Nd alloy, an Al-Cu alloy, or an Al-Cu-Ni alloy). Furthermore, when a conductive material with a low work function and high light reflectance, such as aluminum (Al) or an aluminum-containing alloy, is used, it can be used as an anode electrode by improving the hole injection characteristics by providing an appropriate hole injection layer. The thickness of the first electrode can be, for example, 0.1 to 1 μm. Alternatively, when a light-reflecting layer, which will be described later, is provided, the material constituting the first electrode may be indium oxide, indium-tin oxide (ITO, Indium Tin Oxide, including Sn-doped In2O3, crystalline ITO, and amorphous ITO), or indium-zinc oxide (IZO, Indium Zinc Oxide). , indium-gallium oxide (IGO), indium-doped gallium-zinc oxide (IGZO, In-GaZnO4), IFO (F-doped In2O3), ITiO (Ti-doped In2O3), InSn, InSnZnO, tin oxide (SnO2), ATO (Sb doped Examples of transparent conductive materials include transparent conductive materials based on a host layer of a variety of materials, such as F-doped SnO2, FTO (F-doped SnO2), zinc oxide (ZnO), aluminum oxide-doped zinc oxide (AZO), gallium oxide-doped zinc oxide (GZO), B-doped ZnO, AlMgZnO (aluminum oxide and magnesium oxide-doped zinc oxide), antimony oxide, titanium oxide, NiO, spinel-type oxides, oxides with a YbFe2O4 structure, gallium oxide, titanium oxide, niobium oxide, or nickel oxide. Alternatively, a transparent conductive material with excellent hole injection properties, such as indium tin oxide (ITO) or indium zinc oxide (IZO), can be layered on a highly reflective film, such as a dielectric multilayer film or aluminum (Al) or its alloy (e.g., an Al-Cu-Ni alloy). On the other hand, when the first electrode is made to function as a cathode electrode, it is desirable to configure the first electrode from a conductive material having a small work function value and high light reflectance. However, the conductive material having high light reflectance used as an anode electrode can also be used as a cathode electrode by improving the electron injection characteristics by providing an appropriate electron injection layer thereon.

[0068] When the second electrode functions as a cathode, it is desirable for the material (semi-transparent or transparent) constituting the second electrode to be transparent to the emitted light and to be composed of a conductive material with a low work function to efficiently inject electrons into the light-emitting layer. Examples of low-work-function metals or alloys include aluminum (Al), silver (Ag), magnesium (Mg), calcium (Ca), sodium (Na), strontium (Sr), alkali metals or alkaline earth metals and silver (Ag) [e.g., alloys of magnesium (Mg) and silver (Ag) (Mg-Ag alloy)], magnesium-calcium alloys (Mg-Ca alloys), and aluminum (Al) and lithium (Li) alloys (Al-Li alloys). Among these, Mg-Ag alloys are preferred, with the volume ratio of magnesium to silver being 5:1 to 30:1. Alternatively, the volume ratio of magnesium to calcium being 2:1 to 10:1. The thickness of the second electrode can be 4 nm to 50 nm, preferably 4 nm to 20 nm, and more preferably 6 nm to 12 nm. Alternatively, at least one material selected from the group consisting of Ag-Nd-Cu, Ag-Cu, Au, and Al-Cu can be used. Alternatively, the second electrode can be formed by stacking, from the organic layer side, the above-mentioned material layer and a so-called transparent electrode (for example, a layer having a thickness of 3×10 -8 m to 1×10 -6 The second electrode may have a laminated structure with a metal (metal oxide) or a metal (metal oxide film) (m). A bus electrode (auxiliary electrode) made of a low-resistance material such as aluminum, aluminum alloy, silver, silver alloy, copper, copper alloy, gold, or gold alloy may be provided on the second electrode to reduce the resistance of the entire second electrode. The average light transmittance of the second electrode is preferably 50% to 90%, and more preferably 60% to 90%. On the other hand, when the second electrode is to function as an anode electrode, it is desirable that the second electrode be made of a conductive material that transmits emitted light and has a large work function.

[0069] Examples of methods for forming the first and second electrodes include deposition methods including electron beam deposition, hot filament deposition, and vacuum deposition; sputtering; chemical vapor deposition (CVD); MOCVD; a combination of ion plating and etching; various printing methods such as screen printing, inkjet printing, and metal mask printing; plating methods (electroplating and electroless plating); lift-off; laser ablation; and sol-gel processes. Various printing and plating methods can directly form the first and second electrodes with the desired shape (pattern). Furthermore, when forming the second electrode after forming the organic layer, it is preferable to use a film formation method with low particle energy, such as vacuum deposition, or MOCVD, in order to prevent damage to the organic layer. Damage to the organic layer can result in the generation of non-emitting pixels (or non-emitting sub-pixels) known as "dark dots" due to leakage current.

[0070] The organic layer includes an emitting layer containing an organic emitting material. Specifically, the organic layer can be formed, for example, from a laminated structure of a hole transport layer, an emitting layer, and an electron transport layer; a laminated structure of a hole transport layer and an emitting layer that also functions as an electron transport layer; or a laminated structure of a hole injection layer, a hole transport layer, an emitting layer, an electron transport layer, and an electron injection layer. Examples of methods for forming the organic layer include physical vapor deposition (PVD) methods such as vacuum deposition; printing methods such as screen printing and inkjet printing; laser transfer methods in which a laser is irradiated onto a laminated structure of a laser absorbing layer and an organic layer formed on a transfer substrate to separate the organic layer on the laser absorbing layer and transfer the organic layer; and various coating methods. When the organic layer is formed by vacuum deposition, for example, a so-called metal mask can be used, and the organic layer can be obtained by depositing a material that has passed through an opening in the metal mask.

[0071] A light-shielding portion may be provided between the light-emitting elements. Specific examples of the light-shielding material that constitutes the light-shielding portion include materials that can block light, such as titanium (Ti), chromium (Cr), tungsten (W), tantalum (Ta), aluminum (Al), and MoSi2. The light-shielding portion can be formed by a deposition method including electron beam deposition, hot filament deposition, and vacuum deposition, a sputtering method, a CVD method, an ion plating method, or the like.

[0072] Examples of materials that can be used to form the sealing resin layer include thermosetting adhesives such as acrylic adhesives, epoxy adhesives, urethane adhesives, silicone adhesives, and cyanoacrylate adhesives, and ultraviolet curing adhesives.

[0073] An intermediate layer (also called a protective layer) may be formed on the first substrate side of the sealing resin layer. In some cases, the intermediate layer may function as a color filter layer. Such an intermediate layer may be made of a known color resist material. In the case of a light-emitting element that emits white light, a transparent filter layer may be provided.

[0074] Examples of materials constituting the intermediate layer (protective layer) include acrylic resins, epoxy resins, and various inorganic materials (for example, SiN, SiON, SiO, Al2O3, and TiO2). The intermediate layer can be formed by a known method such as various CVD methods, various coating methods, various PVD methods including sputtering and vacuum deposition, and various printing methods such as screen printing. The intermediate layer may be common to a plurality of light-emitting elements, or may be provided individually for each light-emitting element.

[0075] An ultraviolet absorbing layer, an anti-fouling layer, a hard coat layer, an anti-static layer, or a protective member (e.g., a cover glass) may be formed on the outermost surface of the display device that emits light (specifically, for example, the outer surface of the second substrate).

[0076] Insulating layers and interlayer insulating layers are formed in display devices, and the insulating materials that make up these layers include SiO2, NSG (non-doped silicate glass), and BPSG (boron-lithium silicide). Silicon silicate glass), PSG, BSG, AsSG, SbSG, PbSG, SOG (spin-on glass), LTO (Low Temperature Oxide, low-temperature CVD-SiO2), low-melting glass, glass paste, and other SiO X Silicon-based materials (materials that make up silicon-based oxide films); Examples of the SiN-based materials include SiC, SiOF, and SiCN. Alternatively, titanium oxide (TiO2), tantalum oxide (Ta2O5), and aluminum oxide can be used. (Al2O3), magnesium oxide (MgO), chromium oxide (CrO x ), zirconium oxide ZrO2, niobium oxide (Nb2O5), tin oxide (SnO2), vanadium oxide (VO x Inorganic insulating materials such as polyimide resins and epoxy resins can also be used. Low dielectric constant insulating materials (e.g., materials with a dielectric constant k (=ε / ε0) of 3.5 or less) such as various resins such as alkoxy resins and acrylic resins, SiOCH, organic SOG, and fluorine resins Specific examples of the material include fluorocarbon, cycloperfluorocarbon polymer, benzocyclobutene, cyclic fluorine-based resin, polytetrafluoroethylene, amorphous tetrafluoroethylene, polyaryl ether, fluorinated aryl ether, fluorinated polyimide, amorphous carbon, parylene (polyparaxylylene), and fluorinated fullerene. Silk (a trademark of The Dow Chemical Co., which is used for coating) is also available. Low-k interlayer dielectric material), Flare (Honeywell Electronic Materials Co. Examples of suitable materials include polyallyl ether (PAE)-based materials (PLA, a trademark of PLA, Inc.). These materials can be used alone or in appropriate combination. In some cases, the substrate may be made of the materials described above. The insulating layer, interlayer insulating layer, and substrate can be formed by known methods such as various CVD methods, various coating methods, various PVD methods including sputtering and vacuum deposition, various printing methods such as screen printing, plating, electrodeposition, immersion, and sol-gel methods.

[0077] In organic EL display devices, it is desirable that the thickness of the hole transport layer (hole supply layer) and the thickness of the electron transport layer (electron supply layer) are approximately equal. Alternatively, the electron transport layer (electron supply layer) may be thicker than the hole transport layer (hole supply layer), which is necessary for high efficiency at low driving voltage and enables sufficient electron supply to the light-emitting layer. That is, by disposing the hole transport layer between the first electrode corresponding to the anode electrode and the light-emitting layer and forming it thinner than the electron transport layer, it is possible to increase the supply of holes. This then results in a carrier balance with no excess or deficiency of holes and electrons and a sufficiently high carrier supply, thereby achieving high light-emitting efficiency. Furthermore, the absence of excess or deficiency of holes and electrons makes it difficult for the carrier balance to be disrupted, suppressing driving degradation and extending the light-emitting lifetime.

[0078] The display device can be used, for example, as a monitor device constituting a personal computer, or as a monitor device incorporated in a television receiver, a mobile phone, a PDA (Personal Digital Assistant), a game machine, or a display device incorporated in a projector. Alternatively, it can be used as an electronic viewfinder. The display device of the present disclosure can be applied to an EVF (Eye View Finder) or a Head Mounted Display (HMD), and can be applied to a display device for VR (Virtual Reality), MR (Mixed Reality), or AR (Augmented Reality). Alternatively, the display device can be used to configure image display devices for electronic paper such as e-books and e-newspapers, billboards, posters, bulletin boards such as blackboards, rewritable paper as an alternative to printer paper, displays for home appliances, card displays for point cards, etc., electronic advertisements, and electronic POP. The display device of the present disclosure can be used as a light-emitting device to configure various lighting devices, including backlight devices for liquid crystal display devices and planar light source devices. [Example]

[0079] The display device of Example 1 is a display device according to the first aspect of the present disclosure. A schematic partial cross-sectional view of the display device of Example 1 is shown in Fig. 1, and schematic views of the lens portion and the like of one light-emitting element unit in Example 1 viewed from above are shown in Figs. 2A, 2B, 3A, and 3B. A schematic partial cross-sectional view of the lens portion and the base portion taken along arrows AA and CC in Fig. 2A is shown in Fig. 4A, and a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows BB and DD in Fig. 2A is shown in Fig. 4B. For the sake of simplicity, various components of the display device located below the base (interlayer insulating layer) 26 may be collectively designated by the reference numeral 29.

[0080] The display device of Example 1 includes a first light emitting element 1 having a first light emitting portion 301 that emits light of a first color. 01, a second light-emitting element 102 having a second light-emitting portion 302 that emits light of a second color, and The liquid crystal display device has a plurality of light emitting element units (pixels) each including a third light emitting element 103 having a third light emitting portion 303 that emits light.

[0081] Here, except for Example 3, the first light emitting element 101 emits blue light, the second light emitting element 102 emits green light, and the third light emitting element 103 emits red light.

[0082] Then, in each light-emitting element unit (pixel), A first base portion 351 having a thickness TB1 is provided above the first light-emitting portion 301 (including the concept of above the first light-emitting portion 301, and directly above the first light-emitting portion 301 in the example shown in FIG. 1 ). A second base 352 having a thickness TB2 is provided above the second light-emitting portion 302 (including the concept of above the second light-emitting portion 302, and directly above the second light-emitting portion 302 in the example shown in FIG. 1 ). A third base portion 353 having a thickness TB3 is provided above the third light-emitting portion 303 (including the concept of above the third light-emitting portion 303, and directly above the third light-emitting portion 303 in the example shown in FIG. 1).

[0083] In addition, a first lens portion 511 having a thickness TL1 is provided on the first base portion 351. A second lens portion 512 having a thickness TL2 is provided on the second base portion 352. On the third base portion 353, a third lens portion 513 having a thickness TL3 is provided.

[0084] and, (TL3+TB3)≦(TL2+TB2)<(TL1+TB1) However, this does not apply when the values ​​of TB3, TB2 and TB1 are the same. In the example shown, (TL3+TB3)<(TL2+TB2)<(TL1+TB1) As mentioned above, TL1, TL2, and TL3 may be the same value or may be different values. TB1, TB2, and TB3 may be the same value or may be different values. The value may be:

[0085] In addition, in the technology disclosed in Japanese Patent Application Laid-Open No. 2012-109213, (TL3+TB3)≦(TL2+TB2)<(TL1+TB1) However, the values ​​of TB3, TB2 and TB1 are the same. In the technology disclosed in Publication No. 89474, (TL3+TB3)=(TL2+TB2)=(TL1+TB1) is.

[0086] In each light-emitting element unit, the side surface of the base 35 is in contact with the side surface of the base 35 adjacent to this base 35.

[0087] In each light-emitting element unit, the light-emitting portion 30 (301, 302, 303) is connected to the first electrode 31 , an organic layer (including a light-emitting layer) 33, and a second electrode 32. That is, each of the light-emitting elements 10 (101, 102, 103) provided on the base 26 formed on the first substrate 41 is first electrode 31, A second electrode 32, and an organic layer (including a light-emitting layer made of an organic electroluminescent layer) 33 sandwiched between a first electrode 31 and a second electrode 32; and In the first embodiment, light from the organic layer 33 is emitted to the outside through the second substrate 42. Specifically, the plurality of light emitting elements 101, 102, and 103 are arranged two-dimensionally (specifically, the first and along a second direction different from the first direction).

[0088] Furthermore, The first light emitting unit 301 has a first wavelength selecting unit CF1 on the light emitting side, The second light emitting unit 302 has a second wavelength selecting unit CF2 on the light emitting side, The third light emitting section 303 has a third wavelength selecting section CF3 on the light emitting side.

[0089] The light-emitting section 30 is covered with an intermediate layer 34. On the intermediate layer 34, a wavelength selection section (specifically, a first color filter layer CF1 that selectively passes blue light, a second color filter layer CF2 that selectively passes green light, and a third color filter layer CF3 that selectively passes blue light) is formed. The second color filter layer CF2 selectively passes red light, and the third color filter layer CF3 selectively passes red light. The color filter layers CF1, CF2, and CF3 are OCCFs (on-chip color filter layers) formed on the first substrate side. This shortens the distance between the organic layer 33 and the color filter layer CF, making it possible to prevent light emitted from the organic layer 33 from entering an adjacent color filter layer CF of a different color and causing color mixing, and also enables a wide range of lens designs for the lens section 51.

[0090] In the example shown in FIG. 1, in each light-emitting element unit, the thickness of the light-emitting portion is the same for the first light-emitting portion 301, the second light-emitting portion 302, and the third light-emitting portion 303. This means that variations in the first light-emitting section 301, the second light-emitting section 302, and the third light-emitting section 303 due to manufacturing This concept includes the following: When the thickness of the first light-emitting section 301 is t1, the thickness of the second light-emitting section 302 is t2, and the thickness of the third light-emitting section 303 is t3, t1 = t2, t1 = t3, and t2 = t3, or t1 ≒ t2, t1 ≒ t3, and t2 ≒ t3. In FIG. 1, the thickness of the light-emitting section 30 is represented by "t."

[0091] In the light emitting element 10 of Example 1, the light emitting surfaces (outer surfaces) of the lens portions 511, 512, and 513 The lens portion 51' is convex in a direction away from the light emitting portions 301, 302, and 303. The light incident surfaces 51" of the lens portions 511, 512, and 513 are in contact with the top surface of the base portion 35. The lens portions 511, 512, and 513 have positive optical power, or alternatively, The light exit surface (outer surface) 51' is made up of a convex lens portion (on-chip micro convex lens), specifically a plano-convex lens.

[0092] In the display device of Example 1, The refractive index of the material (first base constituent material) of the first base portion 351 is n B-1 , The refractive index of the material (second base material) constituting the second base portion 352 is nB-2 , The refractive index of the material (third base constituent material) of the third base portion 353 is n B-3 , The refractive index of the material (first lens portion constituent material) constituting the first lens portion 511 is n L-1 , The refractive index of the material (second lens portion constituent material) constituting the second lens portion 512 is n L-2 , The refractive index of the material (third lens portion constituent material) constituting the third lens portion 513 is n L-3 , When n B-1 ≧n L-1 n B-2 ≧n L-2 n B-3 ≧n L-3 Specifically, n B-1 >n L-1 (2-1) n B-2 >n L-2 (2-2) n B-3 >n L-3 (2-3) That is, it is defined as "the case where [B] formula (2-1), formula (2-2), and formula (2-3) are satisfied" as described above. Here, the material constituting the lens portions 511, 512, and 513 is different from the material constituting the base portions 351, 352, and 353. This makes it possible to widen the range of choices for the material constituting the lens portion 51 and the material constituting the base portion 35. More specifically, an acrylic transparent resin is used as the material constituting the lens portions 511, 512, and 513, and a transparent acrylic resin is used as the material constituting the base portions 351, 352, and 353. 351, 352, and 353 are made of transparent acrylic resins with different refractive indices. In this case, light emitted from the light-emitting unit 30 passes through the base 35 and the lens unit 51, and further passes through the sealing resin layer 36 and the second substrate 42 before being emitted to the outside, and the refractive index values ​​decrease in the order of the refractive index of the material constituting the base 35, the refractive index of the material constituting the lens unit 51, the refractive index of the material constituting the sealing resin layer 36, and the refractive index of the material constituting the second substrate 42.

[0093] In the examples shown in FIGS. 1, 2A, and 2B, the top surfaces of the bases 351, 352, and 353 are lens portions. 3A, the lens portions 511, 512, and 513 cover a part of the top surface of the base portions 351, 352, and 353. In addition, as shown in FIGS. 2A and 3A, the planar shapes of the base portions 351, 352, and 353 are the same as those of the lens portions 511, 512, and 513. In this case, the base portions 351, 352, and 353 are the same as the first wavelength selection portion. CF1, the second wavelength selection unit CF2, and a part of the third wavelength selection unit CF3, and The remaining portions of the wavelength selection portion CF1, the second wavelength selection portion CF2, and the third wavelength selection portion CF3 are formed by a sealing resin layer. 2B and 3B, the planar shape of the lens portions 511, 512, and 513 is circular, and the planar shape of the base portions 351, 352, and 353 is square. In this case, the base portions 351, 352, and 353 are in contact with the first wavelength selection portion CF1, the second wavelength selection portion CF2, and In the example shown in FIG. 3B, the bases 35 are in contact with each other. However, the lens portions 51 are not in contact with each other. The sealing resin layer 36 is located above the paper surfaces of Figures 2A, 2B, 3A, and 3B.

[0094] The light-emitting element 10 (101, 102, 103) of Example 1 or Examples 2 to 9 described later ), the light-emitting section 30 (301, 302, 303) is an organic electroluminescence layer The light-emitting section 30 further includes a first electrode 31 and a second electrode 32. That is, the display device is an organic electroluminescence display device (organic EL display device), and the light-emitting element is an organic electroluminescence element (organic EL element). The display device is a top-emission type (top-surface emission type) display device that emits light from the second substrate 42. The light-emitting section 30 further includes a first electrode 31 and a second electrode 32.

[0095] That is, the display device of Example 1 or Examples 2 to 9 described later, A first substrate 41 and a second substrate 42, and base portions 351, 352, and 353 provided on the light-emitting portions 301, 302, and 303; Lens portions 511, 512, and 513 provided on the base portions 351, 352, and 353, and a sealing resin layer 36 provided between the lens portions 511, 512, and 513 and the second substrate 42; It is composed of:

[0096] In the light-emitting element 10 of Example 1, which is made of an organic EL element, the organic layer 33 has a laminated structure of a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer. One pixel is composed of three light-emitting elements: a first light-emitting element (blue light-emitting element) 101, a second light-emitting element (green light-emitting element) 102, and a third light-emitting element (red light-emitting element) 103. The organic layer 33 constituting the light-emitting element 10 emits white light. The light emitting elements 101, 102, and 103 emit white light and the organic layer 33 emits color light. The first filter layer, which should display blue, is composed of a combination of CF1, CF2, and CF3. The optical element (blue light emitting element) 101 is provided with a first color filter layer (blue color filter layer) CF1, and the second light emitting element (green light emitting element) 102 that is to display green is provided with a second color filter layer CF2. A third filter layer (green color filter layer) CF2 is provided to display red. The light emitting element (red light emitting element) 103 is provided with a third color filter layer (red color filter layer) C F3. The first light-emitting element 101, the second light-emitting element 102, and the third light-emitting element 103 have substantially the same configuration and structure, except for the color filter layer CF and the position of the light-emitting layer in the organic layer 33. The number of pixels is, for example, 1920 × 1080, one light-emitting element (display element) constitutes one sub-pixel, and the number of light-emitting elements (specifically, organic EL elements) is three times the number of pixels. In the display device of Example 1, the sub-pixel arrangement can be a delta arrangement shown in FIG. 54A, a stripe arrangement as shown in FIG. 54B, a diagonal arrangement as shown in FIG. 54C, or a rectangular arrangement. In some cases, as shown in FIG. 54D, the first light-emitting element 101, the second light-emitting element 102, the third light-emitting element 103, and the white One pixel may be configured by a fourth light-emitting element that emits a color (or a fourth light-emitting element that emits a complementary color light). In the fourth light-emitting element that emits white light, a transparent filter layer may be provided instead of the color filter layer.

[0097] Below the substrate (interlayer insulating layer) 26 made of SiO2 formed by the CVD method, An optical element driving unit is provided. The light emitting element driving unit can have a well-known circuit configuration. The light emitting element driving unit is composed of a transistor (specifically, a MOSFET) formed on a silicon semiconductor substrate corresponding to the first substrate 41. A transistor 20 made of a MOSFET is composed of a gate insulating layer 22 formed on the first substrate 41, a gate electrode 21 formed on the gate insulating layer 22, source / drain regions 24 formed on the first substrate 41, a channel formation region 23 formed between the source / drain regions 24, and an element isolation region 25 surrounding the channel formation region 23 and the source / drain region 24. The transistor 20 and the first electrode 31 are electrically connected via a contact plug 27 provided in a base 26. Note that in the drawing, one transistor 20 is shown for one light emitting element driving unit.

[0098] The second electrode 32 is connected to the light-emitting element driving section at the periphery of the display device via a contact hole (contact plug) (not shown) formed in the base (interlayer insulating layer) 26. An auxiliary electrode connected to the second electrode 32 may be provided below the second electrode 32 at the periphery of the display device, and the auxiliary electrode may be connected to the light-emitting element driving section.

[0099] The first electrode 31 functions as an anode electrode, and the second electrode 32 functions as a cathode electrode. The first electrode 31 is made of a light-reflecting material layer, specifically, a laminated structure of, for example, an Al-Nd alloy layer, an Al-Cu alloy layer, an Al-Ti alloy layer, and an ITO layer, and the second electrode 32 is made of a transparent conductive material such as ITO. The first electrode 31 is formed on the base (interlayer insulating layer) 26 based on a combination of a vacuum deposition method and an etching method. The second electrode 32 is formed by a film formation method, particularly a vacuum deposition method, in which the energy of the film-forming particles is low, and is not patterned. The organic layer 33 is also not patterned. However, this is not limited to this, and the organic layer 33 may be patterned. That is, the organic layer 33 may be painted differently for each sub-pixel, with the organic layer 33 of the blue light-emitting element being composed of an organic layer that emits blue light, the organic layer 33 of the green light-emitting element being composed of an organic layer that emits green light, and the organic layer 33 of the red light-emitting element being composed of an organic layer that emits red light.

[0100] In Example 1, the organic layer 33 has a stacked structure of a hole injection layer (HIL), a hole transport layer (HTL), an emissive layer, an electron transport layer (ETL), and an electron injection layer (EIL). The emissive layer is composed of at least two emissive layers that emit light of different colors, and as described above, the light emitted from the organic layer 33 is white. Specifically, the organic layer has a stacked structure of three layers: a red emissive layer that emits red light, a green emissive layer that emits green light, and a blue emissive layer that emits blue light. The organic layer may have a stacked structure of two layers: a blue emissive layer that emits blue light and a yellow emissive layer that emits yellow light, or a stacked structure of two layers: a blue emissive layer that emits blue light and an orange emissive layer that emits orange light.

[0101] The hole injection layer not only increases hole injection efficiency but also functions as a buffer layer to prevent leakage, and has a thickness of, for example, about 2 to 10 nm. The hole injection layer is made of, for example, a hexaazatriphenylene derivative represented by the following formula (A) or formula (B). If the edge of the hole injection layer comes into contact with the second electrode, this will be the main cause of brightness variations between pixels, leading to a deterioration in display quality.

[0102] [ka]

[0103] where R 1 ~R 6are each independently a substituent selected from hydrogen, halogen, a hydroxy group, an amino group, an arylamino group, a substituted or unsubstituted carbonyl group having 20 or less carbon atoms, a substituted or unsubstituted carbonyl ester group having 20 or less carbon atoms, a substituted or unsubstituted alkyl group having 20 or less carbon atoms, a substituted or unsubstituted alkenyl group having 20 or less carbon atoms, a substituted or unsubstituted alkoxy group having 20 or less carbon atoms, a substituted or unsubstituted aryl group having 30 or less carbon atoms, a substituted or unsubstituted heterocyclic group having 30 or less carbon atoms, a nitrile group, a cyano group, a nitro group, or a silyl group; and an adjacent R m (m=1~6) is a ring structure In addition, X 1 ~X 6 are each independently a carbon or nitrogen atom.

[0104] [ka]

[0105] The hole transport layer is a layer that increases the efficiency of hole transport to the light-emitting layer. In the light-emitting layer, when an electric field is applied, electrons and holes recombine to generate light. The electron transport layer is a layer that increases the efficiency of electron transport to the light-emitting layer, and the electron injection layer is a layer that increases the efficiency of electron injection into the light-emitting layer.

[0106] The hole transport layer is made of, for example, 4,4',4"-tris(3-methylphenylphenylamino)triphenylamine (m-MTDATA) or α-naphthylphenyldiamine (αNPD) with a thickness of about 40 nm.

[0107] The light-emitting layer is a light-emitting layer that generates white light by mixing colors, and is formed by laminating, for example, a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer, as described above.

[0108] In the red light-emitting layer, application of an electric field causes some of the holes injected from the first electrode 31 and some of the electrons injected from the second electrode 32 to recombine, thereby generating red light. Such a red light-emitting layer contains, for example, at least one material selected from a red light-emitting material, a hole transport material, an electron transport material, and a bipolar charge transport material. The red light-emitting material may be a fluorescent material or a phosphorescent material. A red light-emitting layer having a thickness of approximately 5 nm may be formed, for example, by mixing 30 mass % of 2,6-bis[(4'-methoxydiphenylamino)styryl]-1,5-dicyanonaphthalene (BSN) with 4,4-bis(2,2-diphenylvinyl)biphenyl (DPVBi).

[0109] In the green light-emitting layer, application of an electric field causes some of the holes injected from the first electrode 31 and some of the electrons injected from the second electrode 32 to recombine, generating green light. Such a green light-emitting layer contains, for example, at least one material selected from a green light-emitting material, a hole transport material, an electron transport material, and a positive and negative charge transport material. The green light-emitting material may be a fluorescent material or a phosphorescent material. A green light-emitting layer having a thickness of approximately 10 nm may be made, for example, of DPVBi mixed with 5% by mass of coumarin 6.

[0110] In the blue light-emitting layer, application of an electric field causes some of the holes injected from the first electrode 31 and some of the electrons injected from the second electrode 32 to recombine, thereby generating blue light. Such a blue light-emitting layer contains, for example, at least one material selected from a blue light-emitting material, a hole-transporting material, an electron-transporting material, and a bipolar charge-transporting material. The blue light-emitting material may be a fluorescent material or a phosphorescent material. A blue light-emitting layer having a thickness of approximately 30 nm may be formed, for example, by mixing 2.5 mass % of 4,4'-bis[2-{4-(N,N-diphenylamino)phenyl}vinyl]biphenyl (DPAVBi) with DPVBi.

[0111] The electron transport layer, which is about 20 nm thick, is made of, for example, 8-hydroxyquinoline aluminum (Alq3), and the electron injection layer, which is about 0.3 nm thick, is made of, for example, LiF or Li2O.

[0112] However, the materials constituting each layer are merely examples and are not limited to these materials. Furthermore, for example, the light-emitting layer may be composed of a blue light-emitting layer and a yellow light-emitting layer, or a blue light-emitting layer and an orange light-emitting layer, as described above.

[0113] A method for manufacturing the light emitting device 10 of Example 1 shown in FIG. 1 will be outlined below.

[0114] [Process-100A] First, a light emitting element driving section is formed on a silicon semiconductor substrate (first substrate 41) based on a known MOSFET manufacturing process.

[0115] [Process-100B] Next, a base (interlayer insulating layer) 26 is formed on the entire surface by CVD.

[0116] [Process-100C] Then, a contact hole is formed in a portion of the base 26 located above one of the source / drain regions of the transistor 20 using photolithography and etching techniques. Next, a metal layer is formed on the base 26 including the contact hole using, for example, a sputtering method, and then the metal layer is patterned using photolithography and etching techniques to form a first electrode 31 on a portion of the base 26. The first electrode 31 is separated for each light-emitting element. Additionally, a contact hole (contact plug) 27 that electrically connects the first electrode 31 and the transistor 20 can be formed in the contact hole.

[0117] [Process-110A] Next, for example, an insulating layer 28 is formed on the entire surface based on the CVD method, and then the insulating layer 28 is left on the base 26 between the first electrodes 31 based on photolithography and etching techniques.

[0118] [Process-110B] Thereafter, the organic layer 33 is formed on the first electrode 31 and the insulating layer 28 by, for example, a PVD method such as vacuum deposition or sputtering, or a coating method such as spin coating or die coating. In some cases, the organic layer 33 may be patterned into a desired shape.

[0119] [Process-110C] Next, the second electrode 32 is formed on the entire surface, for example, by vacuum deposition. In some cases, the second electrode 32 may be patterned into a desired shape. In this manner, the organic layer 33 and the second electrode 32 can be formed on the first electrode 31.

[0120] [Process-110D] Next, a protective film (not shown) made of an inorganic material is formed using a CVD method, and then an intermediate layer 34 is formed over the entire surface using a coating method, after which the top surface of the intermediate layer 34 is planarized. Because the intermediate layer 34 can be formed using a coating method, there are fewer constraints on the processing, a wider range of materials can be selected, and high-refractive-index materials can be used. Then, color filter layers CF1, CF2, and CF3 are formed on the intermediate layer 34 using a well-known method.

[0121] [Process-120] Next, the base 35 (351, 352, 353) is formed on the color filter layer CF (CF1, CF2, CF3). Specifically, a base constituent material layer for forming the base 351 on the entire surface Next, the base portion forming material layer 35' is patterned based on photolithography and etching techniques to obtain a first base portion 351 (see FIG. 52B). Thereafter, the base portion forming material layer 35' is patterned again based on photolithography and etching techniques, so that the first base portion 351 is left as it is, and the second 2 base 352 is obtained (see FIG. 52C). Then, photolithography and etching are performed. The base constituent material layer 35' is patterned again based on the technique, thereby forming the first base 351 and The third base portion 353 is obtained while leaving the second base portion 352 as it is (see FIG. 52D). In this manner, the first base portion 351, the second base portion 352, and the third base portion 353 can be obtained.

[0122] [Process-130] Next, for example, the third lens portion 513 is formed on the third base portion 353 (see FIG. 53A), the second lens portion 512 is formed on the second base portion 352 (see FIG. 53B), and the first lens portion 513 is formed on the first base portion 351 (see FIG. 53C). Specifically, the first lens portion 511 is formed on the entire surface (see FIG. 53C). A lens portion forming layer for forming the lens portion is formed, and a resist material layer is formed thereon. Then, the resist material layer is patterned to leave the resist material layer on the third base portion 353. By subjecting the resist material layer to a heat treatment, the resist material layer is shaped into a lens portion, thereby forming the third lens portion 513. In the same manner, the second lens portion 512 can be formed on the second base portion 352, and the first lens portion 511 can be formed on the first base portion 351. can be done.

[0123] [Process-140] Next, the lens portion 51 (511, 512, 513) and the second substrate 42 are bonded together with an acrylic adhesive. The organic layer 33 and the color filter layer CF are bonded together by a sealing resin layer 36 made of a resin such as a fluororesin. In this way, the light-emitting element (organic EL element) shown in Fig. 1, that is, the display device of Example 1, can be obtained. In this way, by providing the color filter layer CF on the first substrate side rather than on the second substrate side, a so-called OCCF type is used, which makes it possible to shorten the distance between the organic layer 33 and the color filter layer CF, thereby increasing the design width and design freedom of the lens portion 51, and the so-called OCCF type reduces the possibility of problems occurring in alignment with the organic layer 33.

[0124] As shown in FIG. 56A , the luminance of a light-emitting element decreases depending on the operating time of the light-emitting element. The decrease in luminance increases in the order of green light-emitting elements (indicated by a circle "G" in FIG. 56A ), red light-emitting elements (indicated by a square "R" in FIG. 56A ), and blue light-emitting elements (indicated by a triangle "B" in FIG. 56A ). Therefore, in a light-emitting element that emits white light using a light-emitting layer formed by stacking red, green, and blue light-emitting layers, the luminance changes differently over time in the red, green, and blue light-emitting layers, resulting in the white light emitted from the light-emitting element becoming reddish or greenish. Furthermore, as shown in FIG. 56B , the viewing angle dependence of the luminance decreases depending on the angle (viewing angle) from the normal to the light-emitting element in the order of red, green, and blue light-emitting elements. The results for the green light-emitting element are indicated by a circle "G" in Fig. 56B, the results for the red light-emitting element are indicated by a square "R" in Fig. 56B, and the results for the blue light-emitting element are indicated by a triangle "B" in Fig. 56B. Therefore, in a light-emitting element that emits white light using a light-emitting layer formed by stacking red, green, and blue light-emitting layers, the luminance changes in the red, green, and blue light-emitting layers differ depending on the viewing angle (i.e., when the display device is viewed from an angle rather than from the front), resulting in a deviation from the desired chromaticity, and the white light emitted from the light-emitting element becomes reddish or greenish light. In other words, so-called viewing angle coloration occurs.

[0125] If the radius of curvature of the lens surface of the on-chip micro convex lens can be increased, the amount of light emitted from the light emitting element to the outside can be increased. However, as pixels become smaller, the size of the light emitting section also becomes smaller, which in turn reduces the size of the on-chip micro convex lens, making it difficult to increase the radius of curvature of the lens surface.

[0126] In the display device of Example 1, the value of (TL+TB), which is the distance from the light emitting unit to the light exit surface of the lens unit, is the same as the value of TB3, the value of TB2, and the value of TB1. Although it is included, (TL3+TB3)≦(TL2+TB2)<(TL1+TB1) satisfies the following. Specifically, the distance from the light-emitting unit of the light-emitting element that emits blue light to the light-emitting surface of the lens unit is longer than the distance from the light-emitting units of the light-emitting elements that emit green and red light to the light-emitting surface of the lens unit. As shown in the conceptual diagram in Figure 57, the larger the value of (TL + TB), which is the distance from the light-emitting unit 30 to the light-emitting surface of the lens unit 51, that is, by taking into consideration not only the radius of curvature of the lens surface of the lens unit but also the height of the base, the more the amount of light incident on the lens unit 51 can be increased, and as a result, the luminance of the first light-emitting element can be increased.

[0127] In a display device that requires high brightness, such as a wearable display device, a head-mounted display (HMD), a display device for VR (Virtual Reality), MR (Mixed Reality), or AR (Augmented Reality), if the current flowing through the light-emitting element that emits blue light is increased in order to avoid the state shown in Fig. 56A, the light-emitting life of the light-emitting element will be shortened. (TL3+TB3)≦(TL2+TB2)<(TL1+TB1) By adopting such a configuration, the amount of light incident on the lens portion of the blue-emitting light-emitting element can be increased, so that the luminance of the blue-emitting light-emitting element can be maintained even if the value of the current flowing through the blue-emitting light-emitting element is reduced. As a result, deterioration over time of the blue-emitting light-emitting element can be suppressed, and changes in the white light emitted from the light-emitting element can be suppressed. Therefore, the display device of Example 1 is suitable for application to display devices that require high luminance as described above, wearable display devices, etc.

[0128] A schematic partial cross-sectional view of Modification 1 of the display device of Example 1 is shown in Figure 5. In this Modification 1 of the display device of Example 1, the base 35 and the lens portion 51 are made of the same material, for example, an acrylic transparent resin with a refractive index of 1.55. This simplifies the manufacturing process. In Figure 5, the boundary between the lens portion 51 and the base 35 is indicated by a dotted line.

[0129] FIG. 6 shows a schematic partial cross-sectional view of a modified example 2 of the display device of Example 1. This modified example 2 of the display device of Example 1 is provided with a base having a multi-layer structure. Specifically, the third base 353 of the third light-emitting element (red light-emitting element) 103 is made of an acrylic transparent resin. Also, the second base 352 of the second light-emitting element (green light-emitting element) 102 is made of a transparent acrylic resin. The first light-emitting element (blue light-emitting element) 101 includes a first base portion 351 and a second base portion layer 353. The first base portion 351 is made of an extension portion 35A and a second base portion layer 35B made of an acrylic transparent resin. The base portion 35 is made up of an extension portion 35A and a first base portion constituting layer 35C made of a transparent acrylic resin.

[0130] FIG. 7 shows a schematic partial cross-sectional view of a modified example 3 of the display device of Example 1. This modified example 3 of the display device of Example 1 also has a base having a multi-layer structure. Specifically, the third base 353 of the third light-emitting element (red light-emitting element) 103 is made of an acrylic transparent resin. Also, the second base 352 of the second light-emitting element (green light-emitting element) 102 has a thickness of 100 μm. The first light-emitting element (blue light-emitting element) 101 includes a first base portion 351 and a second base portion layer 353. The first base portion 351 is made of an extension portion 35A and a second base portion layer 35B made of an acrylic transparent resin. The extension 35A of the second base 352 (second base component layer 35B), and the acrylic It is made up of a first base portion constituting layer 35C made of a transparent resin.

[0131] Other configurations and structures of the above-described modified examples 1, 2, and 3 of the display device of the first embodiment can be the same as those of the display device of the first embodiment. [Example]

[0132] Example 2 is a modification of Example 1. Fig. 8 shows a schematic partial cross-sectional view of the display device of Example 2, Figs. 9A, 9B, and 10 show schematic views of the lens portion and the like of one light-emitting element unit in Example 2 viewed from above, Fig. 11A shows a schematic partial cross-sectional view of the lens portion and the base along arrows AA and CC in Fig. 9A, and Fig. 11B shows a schematic partial cross-sectional view of the lens portion and the base along arrows BB and DD in Fig. 9A.

[0133] In the display device of Example 2, in each light-emitting element unit, the side surface of the base 35 is not in contact with the side surface of the base 35 adjacent to this base 35. By adopting such a structure, the side surface of the base 35 is in contact with the refractive index n B A refractive index lower than n M Therefore, it is possible to provide the base 35 with a kind of lens effect or waveguide effect, and it is possible to further improve the light-collecting effect of the lens portion 51. In Example 2, specifically, the refractive index n of the material constituting the base 35 is B A refractive index lower than n M The spaces between the side surfaces of the bases 35 are filled with a sealing resin layer 36 made of a material having the above formula. The shortest distance between the side surfaces of adjacent bases 35 is set to, for example, 0.5 μm.

[0134] In the examples shown in FIGS. 8, 9A, and 9B, the top surfaces of the bases 351, 352, and 353 are lens portions. 10, the lens portions 511, 512, and 513 cover a part of the top surface of the base portions 351, 352, and 353. In addition, as shown in FIGS. 9A and 10, the planar shapes of the base portions 351, 352, and 353 are In this case, the base portions 351, 352, and 353 may be circular in shape. The first wavelength selection section CF1, the second wavelength selection section CF2, and the third wavelength selection section CF3 are in contact with each other. The remaining parts of the first wavelength selection section CF1, the second wavelength selection section CF2 and the third wavelength selection section CF3 9B, the lens portion 511, The planar shapes of 512 and 513 are circular, and the planar shapes of bases 351, 352, and 353 are square. In this case, the base portions 351, 352, and 353 are in contact with the first wavelength selecting portion CF1, the second wavelength selecting portion CF2, and the third wavelength selecting portion CF3. The sealing resin layer 36 is located above the paper surfaces of FIGS. 9A, 9B, and 10.

[0135] A schematic partial cross-sectional view of Modified Example 1 of the display device of Example 2 is shown in Figure 12. In this Modified Example 1 of the display device of Example 2, the base 35 and the lens portion 51 are made of the same material, for example, an acrylic transparent resin with a refractive index of 1.55. In Figure 12, the boundary between the lens portion 51 and the base 35 is indicated by a dotted line.

[0136] FIG. 13 shows a schematic partial cross-sectional view of a modified example 2 of the display device of Example 2. This modified example 2 of the display device of Example 2 includes a base having a multi-layer structure. Specifically, the third base 353 of the third light-emitting element (red light-emitting element) 103 is made of the same material as the third base 353 in the modified example 2 of Example 1. In addition, the second light-emitting element (green light-emitting element) The second base portion 352 of the embodiment 102 is the extension portion 35A of the third base portion 353, and the second modification of the embodiment 1. It is made of the same material as the second base portion 352 (second base portion forming layer 35B) in the above. The first base portion 351 of the first light emitting element (blue light emitting element) 101 is an extension of the third base portion 353. 35A, and the first base portion 351 (first base portion constituting layer 35C) in Modification 2 of Example 1 It is made of the same materials.

[0137] FIG. 14 shows a schematic partial cross-sectional view of a modified example 3 of the display device of Example 2. This modified example 3 of the display device of Example 2 includes a base having a multi-layer structure. Specifically, the third base 353 of the third light-emitting element (red light-emitting element) 103 is made of the same material as the third base 353 in the modified example 3 of Example 1. In addition, the second light-emitting element (green light-emitting element) The second base portion 352 of the embodiment 102 is the extension portion 35A of the third base portion 353, and the third modification of the embodiment 1. It is made of the same material as the second base portion 352 (second base portion forming layer 35B) in the above. The first base portion 351 of the first light emitting element (blue light emitting element) 101 is an extension of the third base portion 353. 35A, the extension of the second base portion 352 (second base portion constituting layer 35B), and the modified example of Example 1 3, the first base portion 351 (first base portion constituting layer 35C) is made of the same material as the first base portion 351 (first base portion constituting layer 35C). [Example]

[0138] Example 3 is a modification of Examples 1 and 2. Schematic partial cross-sectional views of the display device of Example 3 are shown in FIGS.

[0139] In Examples 1 and 2, the thickness of the light emitting portion is substantially the same in the first light emitting portion 301, the second light emitting portion 302, and the third light emitting portion 303. On the other hand, in Example 3, The thickness of the first light-emitting section 301, the second light-emitting section 302, and the third light-emitting section 303 differ. In the examples shown in FIGS. 15 and 16, the thickness of the first light-emitting portion 301 is t1, the thickness of the second light-emitting portion 302 is t2, When the thickness of the third light-emitting section 303 is t2 and the thickness of the third light-emitting section 303 is t3, t1 ≠ t2, t1 ≠ t3, and t2 ≠ t3 are satisfied. More specifically, t1>t2>t3 is.

[0140] Also, unlike Examples 1 and 2, the first light emitting element 101 emits red light, and the second light emitting element The second light emitting element 102 emits green light, and the third light emitting element 103 emits blue light.

[0141] Except for the above configuration and structure, the display device of Example 3 can be substantially the same as the configuration and structure of the display devices of Examples 1 and 2, and therefore detailed description thereof will be omitted. Also, various modified examples of the display device of Example 1 and various modified examples of the display device of Example 2 can be applied to the display device of Example 3.

[0142] In the display device of Example 3, the value of (TL+TB), which is the distance from the light emitting unit 30 to the light exit surface of the lens unit 51, is also (TL3+TB3)≦(TL2+TB2)<(TL1+TB1) Specifically, the distance from the third light-emitting portion 303 of the third light-emitting element 103 that emits blue light to the light exit surface of the third lens portion 513 is greater than the distance from the first light-emitting portion 301 of the first light-emitting element 101 that emits red light to the light exit surface of the first lens portion 511 (and, in some cases, the distance from the second light-emitting portion 302 of the second light-emitting element 102 that emits green light to the light exit surface of the second lens portion 512). The distance between the blue and red light emitting elements is shorter than the distance between the red and green light emitting elements. As a result, the blue-emitting light emitting element can focus more light more efficiently than the red-emitting light emitting element (and in some cases, than the green-emitting light emitting element), and the viewing angle dependency of the luminance of the blue-emitting light emitting element can be reduced. For example, in a display device for an application requiring a large amount of eye movement, such as an electronic viewfinder (i.e., an application in which viewing angle coloring is a concern), or in a display device for an application in which color is important, by using the display device of Example 3, deviation from a desired chromaticity can be suppressed, and the occurrence of viewing angle coloring, such as white light emitted from the light emitting element becoming reddish or greenish, can be suppressed.

[0143] As described above, the value of (TL+TB), which is the distance from the light emitting unit 30 to the light exit surface of the lens unit 51, is (TL3+TB3)≦(TL2+TB2)<(TL1+TB1) In a display device according to the first aspect of the present disclosure that satisfies the above, whether the first light-emitting element is a light-emitting element that emits blue light (Example 1) or whether the third light-emitting element is a light-emitting element that emits blue light (Example 3) can be determined appropriately depending on the specifications required of the display device.

[0144] In the display device of Example 3 shown in Figure 15, one lens unit is provided for one light-emitting unit, but in some cases, one lens unit may be shared by multiple light-emitting elements. For example, a light-emitting element may be arranged at each vertex of an equilateral triangle (a total of three light-emitting elements), and these three light-emitting elements may share one lens unit, or a light-emitting element may be arranged at each vertex of a rectangle (a total of four light-emitting elements), and these four light-emitting elements may share one lens unit. Alternatively, multiple lens units may be provided for one light-emitting unit. [Example]

[0145] Example 4 is a modification of Examples 1 to 3. As shown in a schematic partial cross-sectional view in Fig. 17, in the display device of Example 4, in each light-emitting element unit, the lens portion 51 is concave in a direction away from the light-emitting portion 30. In this case, the first light-emitting portion 301 The light emitted from the second light-emitting portion 302 passes through the sealing resin layer 36, the first base portion 351, the first lens portion 511, and the second substrate 42, and is emitted to the outside in a focused state. , the sealing resin layer 36, the second base portion 352, the second lens portion 512, the second support portion 372, the second substrate 4 2 and is emitted to the outside in a focused state. , the sealing resin layer 36, the third base portion 353, the third lens portion 513, the third support portion 373, the second substrate The refractive index of the material that forms the lens portion 51 is made higher than the refractive index of the material that forms the base portion 35. That is, n B-1 ≦n L-1 n B-2 ≦n L-2 n B-3 ≦n L-3 Specifically, it is preferable to increase the refractive index in the order of the refractive index of the material constituting the sealing resin layer 36, the refractive index of the material constituting the base 35, the refractive index of the material constituting the lens portion 51, the refractive index of the material constituting the support portion 37, and the refractive index of the material constituting the second substrate 42. In some cases, the refractive index of the material constituting the support portion 37 and the refractive index of the material constituting the lens portion 51 may have the same value.

[0146] 18 is a schematic partial cross-sectional view of a modified example 1 of the display device of Example 4, and in each light-emitting element unit, lens portions 51 that are convex in a direction away from the light-emitting unit 30 and lens portions 51 that are concave in a direction away from the light-emitting unit 30 are mixed. In the illustrated example, the first lens portion 511 and the second lens portion 512 are arranged in a direction opposite to the first light-emitting unit 301. The second light emitting portion 302 is concave in the direction away from the second light emitting portion 302, and the third lens portion 513 is convex in the direction away from the third light emitting portion 303, but the present invention is not limited to this. Reference number 38 is a planarization layer.

[0147] Alternatively, as shown in Fig. 19, which is a schematic partial cross-sectional view of a modified example 2 of the display device of Example 4, a base 35 laminated with a support 37 may be present in each light-emitting element unit. That is, the first base 351 constituting the first light-emitting element 101 is composed of a laminated structure of a base constituent layer 35D, a support constituent material layer 37A, and a support constituent material layer 37B. Also, the second base 352 constituting the second light-emitting element 102 is composed of a laminated structure of the base constituent layer 35D and the support constituent material layer 37A. Then, the light emitted from the first light-emitting element 301 is encapsulated in a sealing resin. The light passes through the oil layer 36, the base constituent layer 35D, the support portion constituent material layer 37A, the support portion constituent material layer 37B, the first lens portion 511, and the second substrate 42 and is emitted to the outside in a focused state. The light emitted from the light section 302 passes through the sealing resin layer 36, the base portion constituent layer 35D, the support portion constituent material layer 37A, the second lens portion 512, the second support portion 372, and the second substrate 42, and is emitted to the outside in a focused state. portion 353 (base portion constituent layer 35D), the third lens portion 513, the third support portion 373, and the second substrate 42. It passes through and is emitted to the outside in a focused state.

[0148] In either case, the refractive index of the material constituting each member is selected so that the lens portion 51 has a light-collecting function.

[0149] Except for the above configuration and structure, the display device of Example 4 can be substantially the same as the configuration and structure of the display devices of Examples 1 to 3, and therefore detailed description thereof will be omitted. Also, various modified examples of the display device of Example 1, various modified examples of the display device of Example 2, and various modified examples of the display device of Example 3 can be applied to the display device of Example 4.

[0150] In the display device of Example 4, all or part of the lens portion is formed on the second substrate side, which makes it easier to form the lens portion than forming it on the first substrate side on which the light-emitting portion is formed. Furthermore, when the base portion and lens portion are formed on the first substrate side on which the light-emitting portion is formed, there are cases where restrictions are imposed on the selection of materials constituting the base portion and lens portion and the formation process. However, when all or part of the lens portion is formed on the second substrate side, it is possible to increase the degree of freedom in the selection of materials constituting the base portion and lens portion and reduce restrictions on the manufacturing process. [Example]

[0151] The display device of Example 5 is a modification of Examples 1 to 4, and specifically relates to a display device according to Aspect 1-A of the present disclosure. A partial cross-sectional view of the display device of Example 5 is shown in Fig. 20, a schematic partial cross-sectional view of the base and the like is shown in Fig. 21, a partial cross-sectional view of Modified Example 1 of the display device of Example 5 is shown in Fig. 22, and a schematic view of the lens portion and the like of one light-emitting element unit in Modified Example 1 of the display device of Example 5 viewed from above is shown in Fig. 23.

[0152] As shown in the schematic partial cross-sectional views of FIGS. 20 and 21, in the display device of Example 5, The first base portion 351 is connected to the first L base portion 35 from the light emitting unit side. 1-L , 1M base 35 1-M and 1H base 35 1-H It has a laminated structure of The second base portion 352 is connected to the second L base portion 35 from the light emitting unit side. 2-L and the second H base 35 2-H Layer structure It has a structure, 1st L base 35 1-L and 2nd L base 35 2-L is composed of an extension 35A of the third base portion, 1M base 35 1-M is composed of the extension portion of the second H base portion (second base portion constituting layer 35B). There are.

[0153] 21 is a partial cross-sectional view, but hatching lines are omitted. Also, in FIG. 20, the top of the light exit surface of the third lens portion 513 is illustrated as being in contact with the extension portion 35C of the first H base portion. However, between the top of the light exit surface of the third lens portion 513 and the extension portion 35C of the first H base portion In addition, although the top of the light emitting surface of the second lens portion 512 is illustrated as being in contact with the sealing resin layer 36, the third lens portion 512 may be in contact with the sealing resin layer 36. The extension 35C of the first H base portion is present between the top of the light emitting surface of the base portion 513 and the sealing resin layer 36. It may exist.

[0154] In the display device of Example 5, 1st H base 35 1-H The refractive index of the first H-base constituent material is n B-1H ', 2nd H base 35 2-H and the second H-shaped base portion forming layer 35B) The refractive index of the H base material is n B-2H ', The refractive index of the third base portion constituent material constituting the third base portion 353 and the third base portion extension portion 35A is n B -3 ', n B-3 '>n B-2H '>n B-1H ' In this way, the light emitted from the light-emitting section 30 passes through the base section 35, and in the base section 35 having a layered structure, the refractive index of the material constituting each layer gradually decreases with increasing distance from the light-emitting section 30. In this case, in each light-emitting element unit, the lens section 51 is convex in the direction away from the light-emitting section 30.

[0155] In the display device of Example 5, in the first light emitting element 101, The light emitted from 301 is guided to the first L base 35 1-L (extension 35A of the third base), first M base 35 1-M[Extension part of second base (second base constituent layer 35B)], first H base 35 1-H and the first lens portion 511, and then passes through the sealing resin layer 36 and the second substrate 42, and is emitted to the outside. In the second light emitting element 102, the light emitted from the second light emitting portion 302 is reflected by the second L base portion 35. 2-L (extension portion 35A of the third base portion) and the second H base portion 35 2-H , and then passes through the second lens portion 512 and the extension portion 35C of the first H base portion, the sealing resin layer 36, and the second substrate 42. and is emitted to the outside. Furthermore, in the third light-emitting element 103, the light emitted from the third light-emitting portion 303 passes through the third base portion 353, and further passes through the third lens portion 512 and the extension portion of the second L base portion (second base portion forming layer 35B), the extension portion 35C of the first H base portion, the sealing resin layer 36, and the second substrate 42, and is emitted to the outside. Note that a schematic view of the lens portion and the like of one light-emitting element unit in Example 5 viewed from above is the same as that shown in, for example, FIG. 2A.

[0156] Furthermore, a schematic partial cross-sectional view of a modified example 1 of the display device of Example 5 is shown in FIG. 22, and a schematic view of the lens portion of one light-emitting element unit viewed from above is shown in FIG. 23, which shows an orthogonal projection image of the first lens portion 511 of the first light-emitting element 101 and a light-emitting element adjacent to the first light-emitting element 101. 19. The orthogonal projection image of the lens portion 51 partially overlaps with the orthogonal projection image of the lens portion 51. In FIG. 22, the partially overlapping area is shown between a dashed dotted line and a dashed two dotted line. In FIG. 23, the boundary portion of the light-emitting element is shown by a solid line and a dotted line. The structure of the lens portion of the modified example 1 of the display device of Example 5 shown in FIG. 22 can also be applied to the modified example 2 of Example 4 shown in FIG.

[0157] In the display device of Example 5, when forming the lens portion, it is less affected by the base portion and lens portion constituting the adjacent light-emitting element, and the formation of the lens portion is easier. Also, as shown in Modification 1, by making the size of the first lens portion of the first light-emitting element larger than the size of the lens portion of the light-emitting element adjacent to the first light-emitting element, the light-collecting efficiency of the lens portion can be improved. Also, by making the size of the third lens portion the smallest and then making the sizes of the second lens portion and the first lens portion larger in that order, the light-collecting efficiency of the lens portion can be improved. [Example]

[0158] Example 6 is a modification of Examples 1 to 5. For example, in the display device of Example 1 shown in FIG. 1, the wavelength selection section CF is included in the light-emitting section 30. On the other hand, as shown in the schematic partial cross-sectional view of FIG. 24, in the display device of Example 6, the wavelength selection section CF is provided between the second substrate 42 and the sealing resin layer 36. Alternatively, as shown in the schematic partial cross-sectional view of FIG. 25, the wavelength selection section CF may be provided between the sealing resin layers 36.

[0159] Except for the above points, the configuration and structure of the display device of Example 6 can be the same as the configuration and structure of the display device of Example 1, and therefore detailed description thereof will be omitted. In addition, the configuration and structure of the display device of Example 6 can also be applied to the modified example of Example 1, and the display devices of Examples 2 to 5 and their modified examples. [Example]

[0160] Example 7 relates to a display device according to the second aspect of the present disclosure. A schematic partial cross-sectional view of the display device of Example 7 is shown in Fig. 26, a schematic view of the lens portion and the like of one light-emitting element unit in Example 7 viewed from above is shown in Fig. 28A, a schematic partial cross-sectional view of the lens portion and the base portion of the display device of Example 7 taken along arrows AA and CC in Fig. 28A is shown in Fig. 29A, and a schematic partial cross-sectional view of the lens portion and the base portion taken along arrows BB and DD in Fig. 28A is shown in Fig. 29B.

[0161] The display device of Example 7 is The display device includes a plurality of light-emitting element units (pixels) each including at least a first light-emitting element 101 having a first light-emitting portion 301 that emits light of a first color and a second light-emitting element 102 having a second light-emitting portion 302 that emits light of a second color, In each light-emitting element unit (pixel), A first base portion 1351 having a thickness TB1 is provided above the first light-emitting portion 301. A second base portion 1352 having a thickness TB2 is provided above the second light-emitting portion 302. A first lens portion 511 having a thickness TL1 is provided on the first base portion 1351. TB2<(TL1+TB1) Satisfy.

[0162] Furthermore, in the display device of Example 7, The light-emitting element unit further includes a third light-emitting element having a third light-emitting portion 303 that emits light of a third color. child 103, In each light-emitting element unit, A third base portion 1353 having a thickness TB3 is provided above the third light-emitting portion 303. TB3≦TB2<(TL1+TB1) Satisfy.

[0163] The display device of Example 7 has substantially the same configuration and structure as the display device described in Example 1, except that second lens unit 512 and third lens unit 513 are removed.

[0164] Here, the planar shapes of the first base portion 1351, the second base portion 1352, and the third base portion 1353 are squares. is.

[0165] Fig. 27 shows a schematic partial cross-sectional view of modified example 1 of the display device of Example 7, Fig. 28B shows a schematic view of the lens portion and the like of one light-emitting element unit in modified example 1 of the display device of Example 7 viewed from above, Fig. 30A shows a schematic partial cross-sectional view of the lens portion and base portion along arrows AA and CC in Fig. 28B in modified example 1 of the display device of Example 7, and Fig. 30B shows a schematic partial cross-sectional view of the lens portion and base portion along arrows BB and DD in Fig. 28B. Modified example 1 of the display device of Example 7 essentially has the configuration and structure of the display device described in Example 2, excluding second lens portion 512 and third lens portion 513.

[0166] Figure 31 shows a schematic partial cross-sectional view of variant 2 of the display device of Example 7, Figure 33A shows a schematic view of the lens portion etc. of one light-emitting element unit viewed from above, Figure 34A shows a schematic partial cross-sectional view of the lens portion and base along arrows AA and CC in Figure 33A, and Figure 34B shows a schematic partial cross-sectional view of the lens portion and base along arrows BB and DD in Figure 33A.

[0167] In the modified example 2 of the display device of the seventh embodiment, A second lens portion 512 having a thickness TL2 is provided on the second base portion 1352. (TL2+TB2)<(TL1+TB1) Satisfy.

[0168] Furthermore, in the modified example 2 of the display device of the seventh embodiment, The light-emitting element unit further includes a third light-emitting element having a third light-emitting portion 303 that emits light of a third color. child 103, In each light-emitting element unit, A third base portion 1353 having a thickness TB3 is provided above the third light-emitting portion 303. TB3≦TB2<(TL1+TB1) Satisfy.

[0169] The second modification of the display device of the seventh embodiment has substantially the same configuration and structure as the display device described in the first embodiment except that third lens unit 513 is removed.

[0170] A schematic partial cross-sectional view of Modified Example 3 of the display device of Example 7 is shown in Figure 32, a schematic view of the lens portion and the like of one light-emitting element unit in Modified Example 3 of Example 7 viewed from above is shown in Figure 33B, a schematic partial cross-sectional view of the lens portion and base portion of Modified Example 3 of the display device of Example 7 taken along arrows AA and CC in Figure 33B is shown in Figure 35A, and a schematic partial cross-sectional view of the lens portion and base portion taken along arrows BB and DD in Figure 33B is shown in Figure 35B. Modified Example 3 of the display device of Example 7 essentially has the configuration and structure of the display device described in Example 2, excluding third lens portion 513.

[0171] In the display device of Example 7 or Modifications 1 to 3, the second base portion 1352 By making the refractive index of the constituent materials and the refractive index of the material constituting third base portion 1353 higher than the refractive index of the material constituting first base portion 1351, the light extraction efficiency near the side surfaces of second base portion 1352 and third base portion 1353 is improved, and as a result, light near the outer edges of the second light-emitting element and the third light-emitting element can be effectively collected. As a result, the second base portion 1352 and third base portion 1353 (or third base portion 1353) can be given the function of a lens portion, i.e., the function of collecting light. As a result, the light extraction efficiency in the front direction of the entire light emitting element can be improved. In addition, by making the refractive index of the material constituting the second base portion 1352 and the refractive index of the material constituting the third base portion 1353 lower than the refractive index of the material constituting the first base portion 1351, As a result of improving the light extraction efficiency near the side surface of first base portion 1351, it is also possible to more effectively collect light near the outer edge of first base portion 1351. In the example shown in Fig. 32, the space between the base portions is filled with sealing resin layer 36, and it is more effective if the refractive index of sealing resin layer 36 is made the lowest. [Example]

[0172] Example 8 is a modification of Examples 1 to 7.

[0173] To further improve light extraction efficiency, the organic EL display device preferably has a resonator structure. Specifically, light emitted from the light-emitting layer is resonated between a first interface formed by the interface between the first electrode and the organic layer (or, in a structure in which an interlayer insulating layer is provided below the first electrode and a light-reflecting layer is provided below the interlayer insulating layer, the interface formed by the interface between the light-reflecting layer and the interlayer insulating layer) and a second interface formed by the interface between the second electrode and the organic layer, and a portion of the light is emitted from the second electrode. The organic EL display device can be configured to satisfy the following formulas (1-1) and (1-2), where L1 is the distance from the maximum light-emitting position of the light-emitting layer to the first interface, OL1 is the optical distance, L2 is the distance from the maximum light-emitting position of the light-emitting layer to the second interface, and OL2 is the optical distance, and m1 and m2 are integers.

[0174] 0.7{-Φ1 / (2π)+m1}≦2×OL1 / λ≦1.2{-Φ1 / (2π)+m1} (1-1) 0.7{-Φ2 / (2π)+m2}≦2×OL2 / λ≦1.2{-Φ2 / (2π)+m2} (1-2) where: λ: maximum peak wavelength of the spectrum of light generated in the light-emitting layer (or a desired wavelength of the light generated in the light-emitting layer) Φ1: Phase shift of the light reflected at the first interface (unit: radian), where -2π<Φ1≦0 Φ2: Phase shift of the light reflected at the second interface (unit: radian), where -2π<Φ2≦0 is.

[0175] Here, the value of m1 is 0 or greater, and the value of m2 is 0 or greater, independent of the value of m1. However, examples include a form where (m1, m2) = (0, 0), a form where (m1, m2) = (0, 1), a form where (m1, m2) = (1, 0), and a form where (m1, m2) = (1, 1).

[0176] The distance L1 from the maximum light emission position of the light-emitting layer to the first interface is the distance from the maximum light emission position of the light-emitting layer to the first interface. The distance L2 from the maximum light-emitting position of the light-emitting layer to the second interface is the actual distance (physical distance) from the maximum light-emitting position of the light-emitting layer to the second interface. The optical distance is also called the optical path length, and generally refers to n × L when a ray of light passes through a medium with a refractive index of n for a distance L. This also applies below. Therefore, if the average refractive index is n ave When OL1=L1×n ave OL2=L2×n ave Here, the average refractive index n ave The organic layer (or the organic layer, the first electrode and It is obtained by summing up the products of the refractive index and thickness of each layer constituting the organic layer (or the organic layer, the first electrode and the interlayer insulating layer) and dividing the sum by the thickness of the organic layer (or the organic layer, the first electrode and the interlayer insulating layer).

[0177] The desired wavelength λ of the light generated in the light-emitting layer (specifically, for example, the red wavelength, green wavelength, or blue wavelength) is determined, and various parameters such as OL1 and OL2 of the light-emitting element are calculated based on the formulas (1-1) and (1-2), and the light-emitting element can be designed.

[0178] The first electrode or the light-reflecting layer and the second electrode absorb a portion of the incident light and reflect the remainder. This causes a phase shift in the reflected light. The phase shifts Φ1 and Φ2 can be determined by measuring the real and imaginary parts of the complex refractive index of the material constituting the first electrode or the light-reflecting layer and the second electrode, for example, using an ellipsometer, and performing calculations based on these values ​​(see, for example, "Principles of Optic," Max Born and Emil Wolf, 1974 (PERGAMON PRESS)). The refractive index of the organic layer, interlayer insulating layer, etc., or the first electrode, which absorbs a portion of the incident light and reflects the remainder, can also be determined by measuring using an ellipsometer.

[0179] Examples of materials for the light-reflecting layer include aluminum, aluminum alloys (e.g., Al-Nd and Al-Cu), Al / Ti stacked structures, Al-Cu / Ti stacked structures, chromium (Cr), silver (Ag), and silver alloys (e.g., Ag-Cu, Ag-Pd-Cu, and Ag-Sm-Cu). The light-reflecting layer can be formed by, for example, deposition methods including electron beam deposition, hot filament deposition, and vacuum deposition, sputtering, CVD, ion plating, plating methods (electroplating and electroless plating), lift-off, laser ablation, and sol-gel processes. Depending on the material for the light-reflecting layer, it may be preferable to form an underlayer, such as TiN, in order to control the crystalline state of the resulting light-reflecting layer.

[0180] In this way, in an organic EL display device having a resonator structure, a red light-emitting element made up of an organic layer that emits white light [in some cases, a red light-emitting element formed by combining an organic layer that emits white light with a red color filter layer (or an intermediate layer that functions as a red color filter layer)] resonates the red light emitted in the light-emitting layer to emit reddish light (light whose optical spectrum peaks in the red region) from the second electrode. Also, a green light-emitting element made up of an organic layer that emits white light [in some cases, a green light-emitting element formed by combining an organic layer that emits white light with a green color filter layer (or an intermediate layer that functions as a green color filter layer)] resonates the green light emitted in the light-emitting layer to emit greenish light (light whose optical spectrum peaks in the green region) from the second electrode. Furthermore, a blue light-emitting element composed of an organic layer that emits white light [in some cases, a blue light-emitting element composed of a combination of an organic layer that emits white light and a blue color filter layer (or an intermediate layer that functions as a blue color filter layer)] resonates the blue light emitted in the light-emitting layer, and emits bluish light (light having a peak in the optical spectrum in the blue region) from the second electrode. That is, the desired wavelength λ (specifically, the red wavelength, green wavelength, and blue wavelength) of the light generated in the light-emitting layer is determined, and various parameters such as OL1 and OL2 for each of the red, green, and blue light-emitting elements are calculated based on equations (1-1) and (1-2), and each light-emitting element can be designed. For example, in paragraph number

[0041] of Japanese Patent Application Laid-Open No. 2012-216495, an organic EL element having a resonator structure in which an organic layer is used as a resonator part is disclosed, and it is described that since it is possible to appropriately adjust the distance from the light-emitting point (light-emitting surface) to the reflecting surface, the film thickness of the organic layer is preferably 80 nm or more and 500 nm or less, and more preferably 150 nm or more and 350 nm or less. Usually, the value of (L1+L2=L0) is set to 0.01 for red light-emitting elements, green light-emitting elements, and blue light-emitting elements. The light emitting element is different.

[0181] The light-emitting element 10 has a resonator structure in which the organic layer 33 serves as a resonator. In order to appropriately adjust the distance from the light-emitting surface to the reflecting surface (specifically, the distance from the light-emitting surface to the first electrode 31 and the second electrode 32), the thickness of the organic layer 33 is set to 8×10 -8 m or more, 5×10 -7 m or less, and 1.5 × 10 -7 m or more, 3.5×10 -7 In an organic EL display device having a resonator structure, the red light emitting element 103 is actually The red light emitted from the light-emitting layer is resonated, and reddish light (light having a peak in the red region of the optical spectrum) is emitted from the second electrode 32. The blue light emitting element 101 emits green light (light having a peak in the green region of the optical spectrum) from the second electrode 32 by resonating the green light emitted from the light emitting layer. The blue light thus emitted is resonated, and bluish light (light having a peak in the blue region of the optical spectrum) is emitted from the second electrode 32.

[0182] When a resonator structure is provided, the organic layer 33 may be used as a resonator portion and may be sandwiched between the first electrode 31 and the second electrode 32. Alternatively, a light-reflecting layer 61 may be formed below the first electrode 31 (toward the first substrate 41), and the organic layer 33 may be used as a resonator portion and may be sandwiched between the light-reflecting layer 61 and the second electrode 32. That is, when the light-reflecting layer 61 is provided on the base 26, the interlayer insulating layer 62 is provided on the light-reflecting layer 61, and the first electrode 31 is provided on the interlayer insulating layer 62, the first electrode 31, the light-reflecting layer 61, and the interlayer insulating layer 62 may be made of the materials described above. The light-reflecting layer 61 may or may not be connected to the contact hole (contact plug) 27.

[0183] Hereinafter, resonator structures will be described based on Examples 1 to 8 with reference to Figures 36A (First Example), 36B (Second Example), 37A (Third Example), 37B (Fourth Example), 38A (Fifth Example), 38B (Sixth Example), 39A (Seventh Example), and 39B and 39C (Eighth Example). In Examples 1 to 4 and 7, the first electrode and the second electrode have the same thickness in each light-emitting section. In Examples 5 and 6, the first electrode has different thicknesses in each light-emitting section, and the second electrode has the same thickness in each light-emitting section. In Example 8, the first electrode may have different thicknesses or the same thickness in each light-emitting section, and the second electrode has the same thickness in each light-emitting section.

[0184] In the following description, the light-emitting portions constituting the first light-emitting element 101, the second light-emitting element 102, and the third light-emitting element 103 are denoted by reference numerals 301, 302, and 303, and the first electrode is denoted by reference numeral 311. , 312, 313, the second electrode is represented by reference numerals 321, 322, 323, and the organic layer is represented by reference numerals The light reflecting layers are denoted by reference numerals 611, 612, and 613, and the interlayer insulating layers are denoted by reference numerals 621, 622, 623, 621', 622', and 623'. In the following description, the materials used are examples and can be changed as appropriate.

[0185] In the illustrated example, the first light emitting element 101 and the second light emitting element 102 are derived from the formulas (1-1) and (1-2). The cavity lengths of the second light emitting element 102 and the third light emitting element 103 are The length of the resonator is shortened in the order of the first light-emitting element 101, the second light-emitting element 102, and the third light-emitting element 103, i.e., the value of L0 is shortened in the order of the first light-emitting element 101, the second light-emitting element 102, and the third light-emitting element 103. However, this is not limited to this, and the optimum resonator length can be determined by appropriately setting the values ​​of m1 and m2.

[0186] A conceptual diagram of a light-emitting device having a first example of a resonator structure is shown in Fig. 36A, a conceptual diagram of a light-emitting device having a second example of a resonator structure is shown in Fig. 36B, a conceptual diagram of a light-emitting device having a third example of a resonator structure is shown in Fig. 37A, and a conceptual diagram of a light-emitting device having a fourth example of a resonator structure is shown in Fig. 37B. In the first to sixth examples and part of the eighth example, interlayer insulating layers 62, 62' are formed under the first electrode 31 of the light-emitting section 30, and a light-reflecting layer 61 is formed under the interlayer insulating layers 62, 62'. In the first to fourth examples, the thickness of the interlayer insulating layers 62, 62' is the same as that of the light-emitting sections 301, 302. 02, 303. And the interlayer insulating layers 621, 622, 623, 621', 622 By appropriately setting the thickness of ', 623', an optimal resonance for the emission wavelength of the light emitting section 30 can be achieved. It is possible to set the optical distance at which the

[0187] In the first example, in the light-emitting portions 301, 302, and 303, the first interface (shown by the dotted line in the drawing) In the second example, the first interface (indicated by a dashed line in the drawing) is at the same level, while the level of the second interface (indicated by a dashed line in the drawing) is different in the light-emitting units 301, 302, and 303. In addition, in the second example, the first interface is at different levels in the light-emitting units 301, 302, and 303, while the level of the second interface is the same in the light-emitting units 301, 302, and 303.

[0188] In the second example, the interlayer insulating layers 621', 622', and 623' are formed on the surface of the light reflecting layer 61. The interlayer insulating layer 62' is made of an oxide film that has been anodized. The oxide film may be made of, for example, aluminum oxide, tantalum oxide, titanium oxide, magnesium oxide, or zirconium oxide, depending on the material of the light-reflecting layer 61. The surface of the light-reflecting layer 61 can be oxidized, for example, by the following method. Specifically, the first substrate 41 on which the light-reflecting layer 61 is formed is immersed in an electrolyte filled in a container. A cathode is placed facing the light-reflecting layer 61. The light-reflecting layer 61 is then anodized using the light-reflecting layer 61 as the anode. The thickness of the oxide film formed by anodization is proportional to the potential difference between the light-reflecting layer 61, which serves as the anode, and the cathode. Therefore, anodization is performed while applying a voltage to the light-reflecting layers 611, 622, and 623 according to the light-emitting sections 301, 302, and 303, respectively. As a result, interlayer insulating layers 621', 622', and 623' made of oxide films of different thicknesses are formed on the surface of the light reflecting layer 61 all at once. The thicknesses of the light reflecting layers 611, 622, and 623 and the thicknesses of the interlayer insulating layers 621', 622', and 623' are different in the light emitting sections 301, 302, and 303.

[0189] In the third example, an undercoat film 63 is disposed under the light-reflecting layer 61, and the undercoat film 63 has different thicknesses in the light-emitting sections 301, 302, and 303. The thickness of the base film 63 increases in the order of the light-emitting portion 301, the light-emitting portion 302, and the light-emitting portion 303.

[0190] In the fourth example, the thicknesses of the light reflecting layers 611, 612, and 613 at the time of film formation are different in the light emitting sections 301, 302, and 303. The first and second interfaces are at the same level, whereas the first and second interfaces are at different levels in the light emitting portions 301, 302, and 303.

[0191] In the fifth and sixth examples, the thicknesses of the first electrodes 311, 312, and 313 are different in the light-emitting sections 301, 302, and 303. The light-reflecting layer 61 has the same thickness in each light-emitting section 30.

[0192] In the fifth example, the level of the first interface is the same in the light-emitting portions 301, 302, and 303. On the other hand, the level of the second interface is different in the light emitting portions 301, 302, and 303.

[0193] In the sixth example, an undercoat film 63 is disposed under the light-reflecting layer 61, and the undercoat film 63 has different thicknesses in the light-emitting sections 301, 302, and 303. The thickness of the base film 63 increases in the order of the light-emitting portion 301, the light-emitting portion 302, and the light-emitting portion 303. In the light-emitting portions 301, 302, and 303, the second interfaces are at the same level, while the first interfaces are at the same level. The levels are different for light emitting elements 301, 302, and 303.

[0194] In the seventh example, the first electrodes 311, 312, and 313 also serve as light reflecting layers. The optical constants (specifically, the phase shift amount) of the materials that make up 11, 312, and 313 are For example, the first electrode 311 of the light emitting section 301 is made of copper (Cu ), and the first electrode 312 of the light-emitting section 302 and the first electrode 313 of the light-emitting section 303 may be made of aluminum (Al).

[0195] In the eighth example, the first electrodes 311 and 312 also serve as light reflecting layers, and the optical constants (specifically, the amount of phase shift) of the materials constituting the first electrodes 311 and 312 are set to be equal to or smaller than those of the light emitting sections 301 and 302. For example, the first electrode 311 of the light emitting section 301 is made of copper (Cu), The first electrode 312 of the light-emitting portion 302 and the first electrode 313 of the light-emitting portion 303 may be made of aluminum (Al). In the eighth example, for example, the seventh example is applied to the light-emitting portions 301 and 302, and the first example is applied to the light-emitting portion 303. The thicknesses of the first electrodes 311, 312, and 313 may be different or the same. [Example]

[0196] Example 9 is a modification of Examples 1 to 8. In Example 9, the relationship between the normal line LN passing through the center of the light emitting section, the normal line LN' passing through the center of the optical path control means (lens section 51), and the normal line LN" passing through the center of the wavelength selecting section (color filter layer CF), and modifications thereof will be described.

[0197] In the display panel (image display area) constituting the display device of Example 9, a reference point (reference area) P is assumed, and the distance (offset amount) D0 between the normal line LN passing through the center of the light-emitting part and the normal line LN' passing through the center of the lens part is It depends on the distance D1 to the normal line LN passing through the center. , the distance D0 may be changed.

[0198] The reference point P may be assumed to be located within a display panel that constitutes the display device. In this case, the reference point P may not be located in the central region of the display panel, or the reference point P may be located in the central region of the display panel. In these cases, the reference point P may be assumed to be one, or multiple, reference points P. In these cases, the value of the distance D0 may be 0 for some light-emitting elements (see, for example, FIG. 1). ), and the value of the distance D0 for the remaining light emitting elements can be configured to be non-zero.

[0199] Alternatively, if one reference point P is assumed, the reference point P may be configured not to be included in the central region of the display panel, or alternatively, the reference point P may be configured to be included in the central region of the display panel. Furthermore, if multiple reference points P are assumed, at least one of the reference points P may be configured not to be included in the central region of the display panel.

[0200] Alternatively, the reference point P may be assumed to be outside (external to) the display panel, in which case one reference point P may be assumed, or multiple reference points P may be assumed. In these cases, the value of the distance D0 may not be 0 for all light-emitting elements.

[0201] Furthermore, the light emitted from each light-emitting element and passing through the lens portion can be configured to converge (be condensed) into a certain area in the space outside the display device, or the light emitted from each light-emitting element and passing through the lens portion can be configured to diverge in the space outside the display device, or the light emitted from each light-emitting element and passing through the lens portion can be configured to be parallel light.

[0202] Furthermore, in the display device of Example 9, the value of the distance (offset amount) D0 can be varied depending on the position of the light emitting element on the display panel. A reference point P is set, The plurality of light-emitting elements are arranged in a first direction and a second direction different from the first direction, The distance from the reference point P to the normal line LN passing through the center of the light-emitting part is defined as D1, and the values ​​of the distance D0 in the first direction and the second direction are defined as D 0-X ,D 0-Y and the distance D1 in the first direction and the second direction The values ​​of each direction are D 1-X ,D 1-Y When D 1-X D against the change of 0-X varies linearly, and D 1-Y D against the change of 0-Y varies linearly, or D 1-X D against the change of 0-X varies linearly, and D 1-Y D against the change of 0-Y varies nonlinearly, or D 1-X D against the change of 0-X varies nonlinearly, and D1-Y D against the change of 0-Y varies linearly, or D 1-X D against the change of 0-X varies nonlinearly, and D 1-Y D against the change of 0-Y can be of a nonlinearly varying form.

[0203] Alternatively, in the display device of Example 9, A reference point P is set, When the distance from the reference point P to the normal line LN passing through the center of the light-emitting part is defined as D1, the value of the distance D0 can be increased as the value of the distance D1 increases.

[0204] where D 1-X D against the change of 0-X varies linearly, and D 1-Y D against the change of 0-Y changes linearly, D 0-X =k X D 1-X D 0-Y =k Y D 1-Y This means that the following holds true. However, k X ,k Y is a constant, i.e., D 0-X ,D 0-Y varies according to a linear function. On the other hand, D 1-X D against the change of 0-X varies nonlinearly, and D 1-Y Change D for 0-Y changes linearly, D 0-X =f X (D 1-X ) D 0-Y =f Y (D 1-Y ) This means that the following holds true. Here, f X ,f Y is a function that is not linear (e.g., a quadratic function).

[0205] Alternatively, D 1-X D for changes in 0-X Changes in D 1-Y D for changes in 0-Y The change in D can be a step-like change. In this case, when the step-like change is viewed as a whole, the change can be a linear change, or a non-linear change. Furthermore, when the display panel is divided into M×N regions, in one region, D 1-X D for changes in 0-X Changes in D 1-Y D for changes in 0-Y The change in may be constant or may be a constant change. The number of light-emitting elements in one region is not limited to, but may be 10×10.

[0206] Furthermore, in the display device of Example 9, the orthogonal projection image of the lens unit can be configured to coincide with the orthogonal projection image of the wavelength selection unit, or to be included in the orthogonal projection image of the wavelength selection unit. By adopting the latter configuration, it is possible to reliably suppress the occurrence of color mixing between adjacent light-emitting elements. Furthermore, in these cases, for light-emitting elements whose distance D0 is not 0, (a) The normal line LN″ passing through the center of the wavelength selection section and the normal line LN passing through the center of the light-emitting section are aligned. (b) The normal line LN'' passing through the center of the wavelength selection section and the normal line LN' passing through the center of the lens section are aligned. (c) A configuration in which the normal line LN″ passing through the center of the wavelength selection section does not coincide with the normal line LN passing through the center of the light emitting section, and the normal line LN″ passing through the center of the wavelength selection section does not coincide with the normal line LN′ passing through the center of the lens section. By adopting the latter configuration (b) or (c), it is possible to reliably prevent color mixing between adjacent light-emitting elements.

[0207] FIG. 40 shows a schematic partial cross-sectional view of the display device of Example 9.

[0208] In Example 9, when the distance (offset amount) between the normal line LN passing through the center of the light emitting part and the normal line LN' passing through the center of the lens part is set to D0, In at least some of the light emitting elements 10, the value of the distance (offset amount) D0 is not 0. In the display device, a reference point (reference area) is assumed, and the distance D0 is the reference point (reference area). It depends on the distance D1 from the quasi-region to the normal LN passing through the center of the light emitting part.

[0209] In the display device of Example 9, the reference point P is assumed to be within the display panel. However, the reference point P is not located in (is not included in) the central region of the display panel. In Figures 41A, 41B, 42A, and 42B, the central region of the display panel is indicated by a black triangle, the light-emitting element 10 is indicated by a square, the center of the light-emitting section 30 is indicated by a black square, and the reference point P is indicated by a black circle. The positional relationship between the light-emitting element 10 and the reference point P is shown schematically in Figure 41A, but one reference point P is assumed. Since the reference point P may include a certain degree of spread, the value of the distance D0 is 0 for some of the light-emitting elements 10 (specifically, one or more light-emitting elements 10 included in the reference point P). The distance D0 of the remaining light emitting elements 10 is not 0. The value of the distance (offset amount) D0 varies depending on the position.

[0210] In the display device of the embodiment, light emitted from each light-emitting element 10 and passing through the lens unit 51 is focused (condensed) in a certain region in the space outside the display device. Alternatively, light emitted from each light-emitting element 10 and passing through the lens unit 51 diverges in the space outside the display device. Alternatively, light emitted from each light-emitting element 10 and passing through the lens unit 51 is parallel light. Whether the light passing through the lens unit 51 is convergent light, divergent light, or parallel light depends on the specifications required for the display device. The power of the lens unit 51 can be designed based on these specifications. When the light passing through the lens unit 51 is convergent light, the spatial position where the image emitted from the display device is formed may or may not be on the normal line to the reference point P, depending on the specifications required for the display device. An optical system through which the image emitted from the display device passes may be arranged to control the display size, display position, etc. of the image emitted from the display device. The type of optical system to be arranged also depends on the specifications required for the display device, but an example of such an optical system is an imaging lens system.

[0211] In the display device of Example 9, a reference point P is set, and the plurality of light-emitting elements 10 are arranged in a first direction (specifically, the X direction) and a second direction (specifically, the Y direction) different from the first direction. The distance from the reference point P to the normal line LN passing through the center of the light-emitting unit 30 is defined as D1, and the values ​​of the distance D0 in the first direction (X direction) and the second direction (Y direction) are defined as D 0-X ,D 0-Y and the distance D1 in the first direction (X direction) and the second direction (Y direction) ) each value of D 1-X ,D 1-Y When [A]D 1-X D against the change of 0-X varies linearly, and D 1-Y D against the change of 0-Y may be designed to vary linearly, [B]D 1-X D against the change of 0-X varies linearly, and D 1-Y D against the change of 0-Ymay be designed to vary nonlinearly, [C]D 1-X D against the change of 0-X varies nonlinearly, and D 1-Y D against the change of 0-Y may be designed to vary linearly, [D]D 1-X D against the change of 0-X varies nonlinearly, and D 1-Y D against the change of 0-Y may be designed to vary nonlinearly.

[0212] 43A, 43B, 43C, 43D, 44A, 44B, 44C, 44D, 45A, 45B, 45C, 45D, 46A, 46B, 46C and 46D, D 1-X D for changes in 0-X Changes in D 1-Y D for changes in 0-Y 10A and 10B are schematic diagrams showing changes in the light intensity of the lens unit 51. In these diagrams, the open arrows indicate linear changes, and the black arrows indicate nonlinear changes. Furthermore, when the arrows point toward the outside of the display panel, this indicates that the light passing through the lens unit 51 is diverging light, and when the arrows point toward the inside of the display panel, this indicates that the light passing through the lens unit 51 is converging light or parallel light.

[0213] Alternatively, when a reference point P is set and the distance from the reference point P to the normal line LN passing through the center of the light-emitting unit 30 is defined as D1, the value of the distance D0 increases as the value of the distance D1 increases. It may be designed as follows.

[0214] That is, D 1-X ,D 1-Y D depends on the change of 0-X ,D 0-Y The change in may be determined based on the specifications required for the display device.

[0215] The display device of Example 9 may also be configured to assume a plurality of reference points P. The plurality of reference points P are arranged within the display area of ​​the display panel. The positional relationship between the light-emitting element 10 and the reference points P1 and P2 is shown schematically in FIG. 41B, and in the illustrated example, two reference points P1 and P2 are assumed. Specifically, the two reference points P1 and P2 are arranged in two-fold rotational symmetry with the center of the display panel as the symmetric point. Here, at least one reference point P is not included in the central area of ​​the display panel. In the illustrated example, the two reference points P1 and P2 are not included in the central area of ​​the display panel. The value of the distance D0 is 0 for some light-emitting elements (specifically, one or more light-emitting elements included in the reference point P), and the value of the distance D0 is not 0 for the remaining light-emitting elements. Regarding the distance D1 from the reference point P to the normal line LN passing through the center of the light-emitting section 30, is the distance between the normal line LN passing through the center of a certain light-emitting unit 30 and the closer reference point P. Let's say.

[0216] In the display device of the modified example of Example 9, the reference point P is assumed to be outside the display panel. The positional relationship between the light-emitting element 10 and the reference points P, P1, and P2 is shown typically in Figures 42A and 42B, but it is possible to have a configuration in which one reference point P is assumed (see Figure 42A), or alternatively, it is possible to have a configuration in which multiple reference points P are assumed (two reference points P1 and P2 are shown in Figure 42B). The two reference points P1 and P2 are arranged in two-fold rotational symmetry with the center of the display panel as the symmetric point. The value of the distance D0 is not 0 for all light-emitting elements. Regarding the distance D1 from the quasi-point P to the normal LN passing through the center of the light-emitting unit 30, The distance between the normal line LN passing through the center of the object and the nearest reference point P is defined as D1. In these cases, the light emitted from each light-emitting element 10 and passing through the lens unit 51 is focused (condensed) in a certain area in the space outside the display device. Alternatively, the light emitted from each light-emitting element 10 and passing through the lens unit 51 is diverged in the space outside the display device.

[0217] As shown in the conceptual diagram of FIG. 47A, the normal line LN passing through the center of the light emitting section, the normal line LN" passing through the center of the wavelength selecting section, and the normal line LN' passing through the center of the lens section 51 may coincide with each other. That is, D0=d0=0 (see, for example, FIG. 1). Note that d0 is the normal line LN passing through the center of the light emitting section as described above. This is the distance (offset amount) between the normal line LN passing through the center and the normal line LN″ passing through the center of the wavelength selective portion.

[0218] Furthermore, in the example shown in FIG. 40, as shown in the conceptual diagram in FIG. 47B, the normal line LN passing through the center of the light-emitting section and the normal line LN" passing through the center of the wavelength selecting section coincide with each other, but the normal line LN passing through the center of the light-emitting section and the normal line LN" passing through the center of the wavelength selecting section do not coincide with the normal line LN' passing through the center of the lens section 51. That is, D0≠d0=0.

[0219] Furthermore, as shown in the conceptual diagram in Figure 47C, the normal line LN passing through the center of the light emitting section, the normal line LN" passing through the center of the wavelength selecting section, and the normal line LN' passing through the center of the lens section 51 may not coincide with each other, and the normal line LN" passing through the center of the wavelength selecting section and the normal line LN' passing through the center of the lens section 51 may coincide with each other. In other words, D0 = d0 > 0.

[0220] As shown in the conceptual diagram of FIG. 48, the normal line LN passing through the center of the light emitting section does not coincide with the normal line LN" passing through the center of the wavelength selecting section, and the normal line LN' passing through the center of the lens section 51, and the normal line LN' passing through the center of the lens section 51 may not coincide with the normal line LN passing through the center of the light emitting section and the normal line LN" passing through the center of the wavelength selecting section. Here, it is preferable that the center of the wavelength selecting section (shown by a black square in FIG. 48) is located on a straight line LL connecting the center of the light emitting section and the center of the lens section 51 (shown by a black circle in FIG. 48). Specifically, the distance from the center of the light emitting section in the thickness direction to the center of the wavelength selecting section is LL1, and the distance from the center of the wavelength selecting section in the thickness direction to the center of the lens section 51 is LL2. When the distance to the center of 1 is LL2, D0>d0>0 Taking into account manufacturing variations, d0:D0=LL1:(LL1+LL2) It is preferable to satisfy the following.

[0221] Alternatively, as shown in the conceptual diagram in FIG. 49A, the normal line LN passing through the center of the light-emitting section, the normal line LN″ passing through the center of the wavelength selecting section, and the normal line LN′ passing through the center of the lens section 51 may coincide with each other. That is, D0=d0=0.

[0222] Also, as shown in the conceptual diagram in Figure 49B, the normal line LN passing through the center of the light emitting section, the normal line LN" passing through the center of the wavelength selecting section, and the normal line LN' passing through the center of the lens section 51 do not coincide, and there are cases where the normal line LN" passing through the center of the wavelength selecting section and the normal line LN' passing through the center of the lens section 51 coincide. In other words, D0 = d0 > 0.

[0223] Furthermore, as shown in the conceptual diagram in FIG. 50, the normal line LN passing through the center of the light emitting section does not coincide with the normal line LN" passing through the center of the wavelength selecting section, and the normal line LN' passing through the center of the lens section 51, and the normal line LN' passing through the center of the lens section 51 may not coincide with the normal line LN passing through the center of the light emitting section and the normal line LN" passing through the center of the wavelength selecting section. Here, it is preferable that the center of the wavelength selecting section is located on the straight line LL connecting the center of the light emitting section and the center of the lens section 51. Specifically, the distance from the center of the light emitting section in the thickness direction to the center of the wavelength selecting section (shown by a black square in FIG. 50) is defined as LL1, and the distance from the center of the wavelength selecting section in the thickness direction to the center of the lens section 51 (shown by a black square in FIG. 50) is defined as LL2. When the distance to the target point (shown by a circle) is LL2, d0>D0>0 Taking into account manufacturing variations, D0:d0=LL2:(LL1+LL2) It is preferable to satisfy the following.

[0224] Although the present disclosure has been described above based on preferred embodiments, the present disclosure is not limited to these embodiments. The configurations and structures of the display device (organic EL display device) and light-emitting element (organic EL element) described in the embodiments are merely examples and can be modified as appropriate. The manufacturing method of the display device is also merely examples and can be modified as appropriate. In the embodiments, the light-emitting element drive unit is configured using MOSFETs, but it can also be configured using TFTs. The first electrode and the second electrode may have a single-layer structure or a multi-layer structure. In the embodiments, a display device that emits three colors of light is configured, but it can also be a display device that emits four or more colors of light, a display device that emits three colors of light and white light, or a display device that emits two colors of light (e.g., red and green).

[0225] A light absorbing layer (black matrix layer) may be formed between the color filter layers CF of adjacent light emitting elements. The black matrix layer may be made of, for example, a black resin film (specifically, for example, a black polyimide resin) containing a black colorant and having an optical density of 1 or more.

[0226] In the embodiment, the planar shape of the lens portion is circular. However, this is not limiting, and the lens portion may be a truncated quadrangular pyramid as shown in Fig. 51A and Fig. 51B, which are modifications of Fig. 2A. Fig. 51A is a schematic plan view of a lens portion having a truncated quadrangular pyramid shape, and Fig. 51B is a schematic perspective view.

[0227] To prevent optical crosstalk caused by light emitted from a light-emitting element penetrating into an adjacent light-emitting element, a light-shielding portion may be provided between the light-emitting elements. Specifically, a groove may be formed between the light-emitting elements and filled with a light-shielding material to form the light-shielding portion. Such a light-shielding portion can reduce the rate at which light emitted from a light-emitting element penetrates into an adjacent light-emitting element, thereby suppressing color mixing and the resulting deviation of the chromaticity of the entire pixel from the desired chromaticity. Furthermore, preventing color mixing increases color purity when the pixel emits a single color, deepening the chromaticity point. This widens the color gamut and broadens the range of color expression of the display device. Furthermore, while a color filter layer is provided for each pixel to improve color purity, depending on the configuration of the light-emitting element, the color filter layer may be thinned or omitted, allowing light absorbed by the color filter layer to be extracted, resulting in improved luminous efficiency. Alternatively, a light-absorbing layer (black matrix layer) may be provided with light-shielding properties.

[0228] The display device of the present disclosure can be applied to a mirrorless digital still camera with interchangeable lenses. A front view of the digital still camera is shown in FIG. 55A, and a rear view is shown in FIG. 55B. This mirrorless digital still camera with interchangeable lenses has, for example, an interchangeable taking lens unit (interchangeable lens) 212 on the right side of the front of a camera body 211, and a grip 213 for the photographer to hold on the left side of the front. A monitor device 214 is provided in the approximate center of the back of the camera body 211. An electronic viewfinder (eyepiece window) 215 is provided above the monitor device 214. By looking through the electronic viewfinder 215, the photographer can visually confirm the optical image of the subject guided by the taking lens unit 212 and determine the composition. In a mirrorless digital still camera with interchangeable lenses configured as described above, the display device of the present disclosure can be used as the electronic viewfinder 215.

[0229] The present disclosure can also be configured as follows. [A01] Display device: First aspect The light emitting device includes a plurality of light emitting element units, each of which includes a first light emitting element having a first light emitting portion that emits light of a first color, a second light emitting element having a second light emitting portion that emits light of a second color, and a third light emitting element having a third light emitting portion that emits light of a third color; In each light-emitting element unit, a first base portion having a thickness TB1 is provided on the first light-emitting portion; A second base portion having a thickness TB2 is provided on the second light-emitting portion, a third base portion having a thickness TB3 is provided on the third light-emitting portion; A first lens portion having a thickness TL1 is provided on the first base portion, A second lens portion having a thickness TL2 is provided on the second base portion, A third lens portion having a thickness TL3 is provided on the third base portion, (TL3+TB3)≦(TL2+TB2)<(TL1+TB1) [However, this does not apply when the values ​​of TB3, TB2 and TB1 are the same] A display device that satisfies the above. [A02] The display device according to [A01], wherein in each light-emitting element unit, the side surface of the base is not in contact with the side surface of the base adjacent to the base. [A03] The display device according to [A01], wherein in each light-emitting element unit, a side surface of the base is in contact with a side surface of a base adjacent to the base. [A04] The display device according to any one of [A01] to [A03], wherein in each light-emitting element unit, the light-emitting portion includes a first electrode, an organic layer, and a second electrode. [A05] The first light-emitting unit has a first wavelength selecting unit on the light output side, the second light emitting unit has a second wavelength selecting unit on the light emitting side, The display device according to any one of [A01] to [A04], wherein the third light-emitting section has a third wavelength selection section on the light-emitting side. [A06] The display device according to any one of [A01] to [A05], wherein the thickness of the light emitting section is the same for the first light emitting section, the second light emitting section, and the third light emitting section in each light emitting element unit. [A07] The display device according to any one of [A01] to [A05], wherein in each light-emitting element unit, the thickness of the light-emitting portion is different between the first light-emitting portion, the second light-emitting portion, and the third light-emitting portion. [A08] The display device according to any one of [A01] to [A07], wherein in each light-emitting element unit, the lens portion is convex in a direction away from the light-emitting portion. [A09] The refractive index of the first base material constituting the first base is n B-1 , which constitutes the second base The refractive index of the second base material is n B-2 , the refractive index of the third base portion constituent material constituting the third base portion is n B -3 , the refractive index of the first lens component material constituting the first lens component is n L-1 , the second lens part is formed The refractive index of the material of the second lens section is n L-2 , a third lens unit structure constituting the third lens unit The refractive index of the material is n L-3 When n B-1 ≧n L-1 n B-2 ≧n L-2 n B-3 ≧n L-3 The display device according to [A08], which satisfies the following. [A10] The display device according to any one of [A01] to [A07], wherein in each light-emitting element unit, the lens portion is concave in a direction away from the light-emitting portion. [A11] A display device according to any one of [A01] to [A07], wherein each light-emitting element unit includes a lens portion that is convex in a direction away from the light-emitting portion and a lens portion that is concave in a direction away from the light-emitting portion. [A12] In each light-emitting element unit, The first base portion has a laminated structure of a first L base portion, a first M base portion, and a first H base portion from the light emitting portion side, The second base portion has a laminated structure of a second L base portion and a second H base portion from the light-emitting portion side, The first L base and the second L base are formed from an extension of the third base, The display device according to [A01], wherein the first M base is composed of an extension of the second H base. [A13] The refractive index of the first H base constituent material of the first H base is n B-1H ', the refractive index of the second H-base constituent material constituting the second H-base and the extension of the second H-base is n B-2H ', the refractive index of the third base portion constituent material constituting the third base portion and the third base portion extension portion is n B-3 ', n B-3 '>n B-2H '>n B-1H ' The display device according to [A12], which satisfies the following. [A14] The display device according to [A12] or [A13], wherein in each light-emitting element unit, the lens portion is convex in a direction away from the light-emitting portion. [A15] A display device described in any one of [A12] to [A14], wherein the orthogonal projection image of the first lens portion of the first light-emitting element and the orthogonal projection image of the lens portion of the light-emitting element adjacent to the first light-emitting element partially overlap. [B01] Display device: Second aspect The light emitting device includes a plurality of light emitting element units each including at least a first light emitting element having a first light emitting portion that emits light of a first color and a second light emitting element having a second light emitting portion that emits light of a second color, In each light-emitting element unit, A first base portion having a thickness TB1 is provided above the first light-emitting portion, A second base portion having a thickness TB2 is provided above the second light-emitting portion, A first lens portion having a thickness TL1 is provided on the first base portion, TB2<(TL1+TB1) A display device that satisfies the above. [B02] The light-emitting element unit further includes a third light-emitting element having a third light-emitting portion that emits light of a third color, In each light-emitting element unit, A third base portion having a thickness TB3 is provided above the third light-emitting portion, TB3≦TB2<(TL1+TB1) The display device according to [B01], which satisfies the following. [B03] A second lens portion having a thickness TL2 is provided on the second base portion, (TL2+TB2)<(TL1+TB1) The display device according to [B01], which satisfies the following. [B04] The light-emitting element unit further includes a third light-emitting element having a third light-emitting portion that emits light of a third color; In each light-emitting element unit, A third base portion having a thickness TB3 is provided above the third light-emitting portion, TB3≦TB2<(TL1+TB1) The display device according to [B03], which satisfies the following. [C01] The distance between the normal line passing through the center of the light emitting part and the normal line passing through the center of the lens part is D0. When the distance D0 is 0.001, the distance D0 is 0.001. The display device according to any one of [A01] to [B04], wherein [C02] A reference point P is assumed, and the distance D0 is the normal line passing through the center of the light-emitting part from the reference point P. The display device according to [C01], wherein the display device is dependent on a distance D1 to the [C03] The display device according to [C01] or [C02], wherein the reference point P is assumed to be within the display panel. [C04] The display device according to [C03], wherein the reference point P is not located in a central region of the display panel. [C05] The display device according to [C03] or [C04], in which a plurality of reference points P are assumed. [C06] A display device according to [C03], in which, when one reference point P is assumed, the reference point P is not included in the central region of the display panel, and, in which multiple reference points P are assumed, at least one reference point P is not included in the central region of the display panel. [C07] The display device according to [C01] or [C02], wherein the reference point P is assumed to be outside the display panel. [C08] The display device according to [C07], in which a plurality of reference points P are assumed. [C09] The display device according to any one of [C01] to [C08], wherein light emitted from each light-emitting element and passing through the lens portion is focused on a certain region in a space outside the display device. [C10] The display device according to any one of [C01] to [C08], wherein light emitted from each light-emitting element and passing through the lens portion is dispersed in a space outside the display device. [C11] The display device according to any one of [C01] to [C06], wherein the light emitted from each light-emitting element and passed through the lens portion is parallel light. [C12] A reference point P is set, The plurality of light-emitting elements are arranged in a first direction and a second direction different from the first direction, The distance from the reference point P to the normal line passing through the center of the light-emitting part is defined as D1, and the values ​​of the distance D0 in the first direction and the second direction are defined as D 0-X ,D 0-Y and the distance D1 in the first direction and the second direction Each value is D 1-X ,D 1-Y When D 1-X D against the change of 0-X varies linearly, and D 1-Y D against the change of 0-Y varies linearly, or D 1-X D against the change of 0-X varies linearly, and D 1-Y D against the change of 0-Y varies nonlinearly, or D 1-X D against the change of 0-X varies nonlinearly, and D 1-YD against the change of 0-Y varies linearly, or D 1-X D against the change of 0-X varies nonlinearly, and D 1-Y D against the change of 0-Y The display device according to any one of [C01] to [C11], wherein the signal changes nonlinearly. [C13] A reference point P is set, When the distance from the reference point P to the normal line passing through the center of the light-emitting part is defined as D1, the value of the distance D0 increases as the value of the distance D1 increases. Display device. [C14] The display device according to any one of [C01] to [C13], wherein a wavelength selection section is provided on the light incident side or the light exit side of the lens section. [C15] The display device according to [C14], wherein the orthogonal projection image of the lens portion coincides with the orthogonal projection image of the wavelength selection portion or is included in the orthogonal projection image of the wavelength selection portion. [C16] In a light-emitting element in which the value of the distance D0 is not 0, a normal line passing through the center of the wavelength selection unit, [C17] In the light-emitting element having a distance D0 value that is not 0, the normal line passing through the center of the wavelength selection section and the normal line passing through the center of the light-emitting section coincide with each other. The display device according to [C14] or [C15], wherein the normal line passing through the center of the lens portion coincides with the normal line. [C18] The orthogonal projection image of the lens part is included in the orthogonal projection image of the wavelength selection part, In the case of a light-emitting element where the value of the distance D0 is not 0, the normal line passing through the center of the wavelength selection section and the light-emitting section The display device according to [C14], wherein the normal line passing through the center coincides with the normal line. [C19] The orthogonal projection image of the lens part is included in the orthogonal projection image of the wavelength selection part, In the light emitting element where the value of the distance D0 is not 0, the normal line passing through the center of the wavelength selection section and the lens section The display device according to [C14], wherein the normal passing through the center of the display area coincides with the normal passing through the center of the display area. [C20] The orthogonal projection image of the lens section coincides with the orthogonal projection image of the wavelength selection section, In the light emitting element where the value of the distance D0 is not 0, the normal line passing through the center of the wavelength selection section and the lens section The display device according to [C14], wherein the normal passing through the center of the display area coincides with the normal passing through the center of the display area. [C21] The display device according to any one of [C14] to [C17], wherein a light absorption layer is formed between the wavelength selection sections of adjacent light emitting elements. [Explanation of symbols]

[0230] 10, 101, 102, 103...light-emitting element, 20...transistor, 21...gate 2. a gate electrode, 22. a gate insulating layer, 23. a channel forming region, 24. a source / drain region, 25. an element isolation region, 26. a substrate (interlayer insulating layer), 27. a contact plug, 28. an insulating layer, 29. various components of the display device located below the substrate (interlayer insulating layer), 30, 301, 302, 303. a light emitting section, 31. a first electrode electrode, 32... second electrode, 33... organic layer (including light-emitting layer), 34... intermediate layer, 35, 351, 352, 353, 1351, 1352, 1353... base, 35'... base constituent material layer, 35A... third base extension, 35B... second base constituent layer, 35C... first base constituent layer, 35D... base constituent layer, 35 1-L ...1st L base, 35 1-M ···Base of 1M, 35 1-H ...1st H base, 35 2-L ...2nd L base, 35 2-H ...Second H group portion, 36 sealing resin layer, 37 support portion, 38 planarization layer, 41 first substrate, 42 second substrate, 51, 511, 512, 513 lens portion, 51' lens Light exit surface (outer surface) of the lens part, 51"...light incident surface of the lens part, 61...light reflecting layer, 62...interlayer insulating layer, 63...undercoat film, CF, CF1, CF2, CF3...wavelength selection part (color filter layer)

Claims

1. A light-emitting device comprising a plurality of light-emitting element units each including a first light-emitting element having a first light-emitting portion that emits a first color, a second light-emitting element having a second light-emitting portion that emits a second color, and a third light-emitting element having a third light-emitting portion that emits a third color, In each light-emitting element unit, a first base portion having a thickness TB 1 is provided on the first light-emitting portion; a second base portion having a thickness TB 2 is provided on the second light-emitting portion; a third base portion having a thickness TB 3 is provided on the third light-emitting portion; a first lens portion having a thickness TL 1 is provided on the first base portion; a second lens portion having a thickness TL 2 is provided on the second base portion; a third lens portion having a thickness TL 3 is provided on the third base portion; (TL 3 +TB 3 )≦(TL 2 +TB 2 )<(TL 1 +TB 1 ) [However, this does not apply when the values ​​of TB 3 , TB 2 and TB 1 are the same.] Satisfied, In each light-emitting element unit, the side surface of the base is not in contact with the side surface of the base adjacent to the base. Display device.

2. A light-emitting element comprising a plurality of light-emitting element units each including a first light-emitting element having a first light-emitting portion that emits a first color, a second light-emitting element having a second light-emitting portion that emits a second color, and a third light-emitting element having a third light-emitting portion that emits a third color, In each light-emitting element unit, a first base portion having a thickness TB 1 is provided on the first light-emitting portion; a second base portion having a thickness TB 2 is provided on the second light-emitting portion; a third base portion having a thickness TB 3 is provided on the third light-emitting portion; a first lens portion having a thickness TL 1 is provided on the first base portion; a second lens portion having a thickness TL 2 is provided on the second base portion; a third lens portion having a thickness TL 3 is provided on the third base portion; (TL 3 +TB 3 )≦(TL 2 +TB 2 )<(TL 1 +TB 1 ) [However, this does not apply when the values ​​of TB 3 , TB 2 and TB 1 are the same.] Satisfied, In each light-emitting element unit, a side surface of the base is in contact with a side surface of a base adjacent to the base. Display device.

3. 3. The display device according to claim 1, wherein the light-emitting portion of each light-emitting element unit includes a first electrode, an organic layer, and a second electrode.

4. the first light emitting unit has a first wavelength selecting unit on the light emitting side, the second light emitting unit has a second wavelength selecting unit on the light emitting side, 3. The display device according to claim 1, wherein the third light-emitting section has a third wavelength selection section on the light-emitting side.

5. 3. The display device according to claim 1, wherein the thickness of the light emitting portion of each light emitting element unit is the same for the first light emitting portion, the second light emitting portion, and the third light emitting portion.

6. 3. The display device according to claim 1, wherein the thicknesses of the light-emitting portions of the first light-emitting portion, the second light-emitting portion, and the third light-emitting portion in each light-emitting element unit are different.

7. A light-emitting element comprising a plurality of light-emitting element units each including a first light-emitting element having a first light-emitting portion that emits a first color, a second light-emitting element having a second light-emitting portion that emits a second color, and a third light-emitting element having a third light-emitting portion that emits a third color, In each light-emitting element unit, a first base portion having a thickness TB 1 is provided on the first light-emitting portion; a second base portion having a thickness TB 2 is provided on the second light-emitting portion; a third base portion having a thickness TB 3 is provided on the third light-emitting portion; a first lens portion having a thickness TL 1 is provided on the first base portion; a second lens portion having a thickness TL 2 is provided on the second base portion; a third lens portion having a thickness TL 3 is provided on the third base portion; (TL 3 +TB 3 )≦(TL 2 +TB 2 )<(TL 1 +TB 1 ) [However, this does not apply when the values ​​of TB 3 , TB 2 and TB 1 are the same.] Satisfied, In each light-emitting element unit, the lens portion is convex in a direction away from the light-emitting portion, The refractive index of the first base portion constituent material constituting the first base portion is n B-1 , the refractive index of the second base portion constituent material constituting the second base portion is n B-2 , the refractive index of the third base portion constituent material constituting the third base portion is n B-3 , the refractive index of the first lens component material constituting the first lens component is n L-1 , the refractive index of the second lens portion constituent material constituting the second lens portion is n L-2 , the refractive index of the third lens portion constituent material constituting the third lens portion is n L-3 When n B-1 ≧n L-1 n B-2 ≧n L-2 n B-3 ≧n L-3 Satisfy the Display device.

8. 3. The display device according to claim 1, wherein the lens portion of each light-emitting element unit is concave in a direction away from the light-emitting portion.

9. 3. The display device according to claim 1, wherein each light-emitting element unit includes a lens portion that is convex in a direction away from the light-emitting portion and a lens portion that is concave in a direction away from the light-emitting portion.

10. A light-emitting element comprising a plurality of light-emitting element units each including a first light-emitting element having a first light-emitting portion that emits a first color, a second light-emitting element having a second light-emitting portion that emits a second color, and a third light-emitting element having a third light-emitting portion that emits a third color, In each light-emitting element unit, a first base portion having a thickness TB 1 is provided on the first light-emitting portion; a second base portion having a thickness TB 2 is provided on the second light-emitting portion; a third base portion having a thickness TB 3 is provided on the third light-emitting portion; a first lens portion having a thickness TL 1 is provided on the first base portion; a second lens portion having a thickness TL 2 is provided on the second base portion; a third lens portion having a thickness TL 3 is provided on the third base portion; (TL 3 +TB 3 )≦(TL 2 +TB 2 )<(TL 1 +TB 1 ) [However, this does not apply when the values ​​of TB 3 , TB 2 and TB 1 are the same.] Satisfied, In each light-emitting element unit, The first base portion has a laminated structure of a first L base portion, a first M base portion, and a first H base portion from the light emitting portion side, The second base portion has a laminated structure of a second L base portion and a second H base portion from the light emitting portion side, The first L-shaped base and the second L-shaped base are formed from an extension of the third L-shaped base, The first M base is composed of an extension of the second H base. Display device.

11. The refractive index of the first H-base constituent material constituting the first H-base is n B-1H ', the refractive index of the second H-base constituent material constituting the second H-base and the extension of the second H-base is n B-2H ', the refractive index of the third base portion constituent material constituting the third base portion and the third base portion extension portion is n B-3 ', n B-3 ’>n B-2H ’>n B-1H ’ 11. The display device according to claim 10, which satisfies the following:

12. The display device according to claim 10 , wherein the lens portion of each light-emitting element unit is convex in a direction away from the light-emitting portion.

13. 11. The display device according to claim 10, wherein an orthogonal projection image of the first lens portion of the first light-emitting element and an orthogonal projection image of the lens portion of the light-emitting element adjacent to the first light-emitting element partially overlap with each other.

Images