Organic light-emitting device, display device, camera device, electronic device, lighting device and mobile device

Abstract

Organic light-emitting device, display device, camera device, electronic device, lighting device and mobile body. The light-emitting device includes: a substrate having a main surface; a first light-emitting element and a second light-emitting element arranged on the main surface, wherein light emitted from the first light-emitting element is emitted from a first region, and light emitted from the second light-emitting element is emitted from a second region; a first lens, into which light emitted from the first region enters; and a second lens, into which light emitted from the second region enters. In a direction parallel to the main surface, the distance between the midpoint of the second region and the vertex of the second lens is greater than the distance between the midpoint of the first region and the vertex of the first lens. The second region is smaller than the first region.

Description

Technical Field

[0001] The present disclosure generally relates to an organic light-emitting device having an optical member such as a microlens, and a display device, an imaging device, an electronic apparatus, a lighting device, and a mobile body each including the organic light-emitting device. Background Art

[0002] The organic light emitting element includes a first electrode, a second electrode, and an organic compound layer arranged between the first electrode and the second electrode. The organic light emitting element is a light emitting device that emits light when carriers are injected from the first electrode and the second electrode. Since the organic light emitting element is a lightweight device that can be made flexible, display devices including organic light emitting elements have become the focus of attention in recent years. In order to provide a high-resolution display device, a system using a color filter (CF) and an organic light emitting element that emits white light (hereinafter referred to as a white + CF system) is known. For the white + CF system, an organic layer is formed on the entire substrate, and therefore, compared with a system in which an organic layer is formed for each color by using a metal mask, it is relatively easy for the white + CF system to obtain a higher resolution of pixel size, pixel pitch, etc.

[0003] International Publication No. 2017 / 169563 describes a display device including an organic light-emitting element for use with an optical system.

[0004] Fig.14 1 is a diagram schematically showing light from an organic light emitting device to an eyeball of a user when the organic light emitting device is used together with an optical system. When the organic light emitting device 10 is used together with the optical system 20 shown in the figure, light traveling forward relative to the display surface is used in a central region located in the central portion of the display region. In contrast, light traveling obliquely relative to the display surface is used in a peripheral region located in the peripheral portion of the display region, and an image is formed in the eyeball 30.

[0005] In other words, in the organic light emitting element located in the peripheral area, light emitted from the organic light emitting element at a wide angle is used, and therefore it is expected to improve the viewing angle characteristics of the organic light emitting element. International Publication No. 2017 / 169563 describes a display device having improved viewing angle characteristics by using a configuration in which the center of the light emitting surface of the light emitting portion and the center of the color filter are arranged to be offset relative to each other.

[0006] However, in a display device including an organic light-emitting element, it is known that it is difficult to extract light with a wide viewing angle. This is because the emitted light is totally reflected in a portion of the organic light-emitting element. Japanese Patent Publication No. 2017-017013 describes a display device having an output coupling component that reduces such total reflection and extracts light with a wide viewing angle.

[0007] The above-described display devices use energy to generate light emission that does not contribute to display, and thus there is room for improvement in reducing power consumption. Summary of the invention

[0008] The light emitting device includes: a substrate having a main surface; a first light emitting element and a second light emitting element arranged on the main surface, wherein light emitted from the first light emitting element is emitted from a first region, and light emitted from the second light emitting element is emitted from a second region; a first lens, into which light emitted from the first region enters; and a second lens, into which light emitted from the second region enters. In a direction parallel to the main surface, a distance between a midpoint of the second region and a vertex of the second lens is greater than a distance between a midpoint of the first region and a vertex of the first lens. The second region is smaller than the first region.

[0009] Further features of the present disclosure will become apparent from the following description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1A is a sectional view showing an example of a first light emitting element of the light emitting device according to the first embodiment of the present disclosure.

[0011] Figure 1B yes Figure 1A A plan view of the first light-emitting element in FIG.

[0012] Figure 2A is a sectional view showing an example of the second light emitting element of the light emitting device according to the first embodiment of the present disclosure.

[0013] Figure 2B yes Figure 2A A plan view of the second light-emitting element in FIG.

[0014] Figure 3 is a cross-sectional view showing an example of a comparative example.

[0015] Figure 4A is a cross-sectional view of a light emitting device according to a second embodiment of the present disclosure.

[0016] Figure 4B It is along Figure 4A A cross-sectional view taken along line AA' in FIG.

[0017] Figure 5A is a sectional view showing an example of a second light emitting element of a light emitting device according to a third embodiment of the present disclosure.

[0018] Figure 5B yes Figure 5A A plan view of the second light-emitting element in FIG.

[0019] Fig. 6A is a sectional view showing an example of a second light emitting element of a light emitting device according to a third embodiment of the present disclosure.

[0020] Figure 6B yes Fig. 6A A plan view of the second light-emitting element in FIG.

[0021] Figure 7 is a sectional view showing an example of a light emitting apparatus according to a fourth embodiment of the present disclosure.

[0022] Figure 8 is a cross-sectional view illustrating an example of advantages of an embodiment of the present disclosure.

[0023] Fig. 9 is a schematic diagram illustrating an example of a display device according to an embodiment of the present disclosure.

[0024] Fig. 10A is a schematic diagram illustrating an example of an image pickup apparatus according to an embodiment of the present disclosure.

[0025] Fig. 10B is a schematic diagram illustrating an example of an electronic device according to an embodiment of the present disclosure.

[0026] Fig.11A is a schematic diagram illustrating an example of a display device according to an embodiment of the present disclosure.

[0027] Fig. 11B is a schematic diagram illustrating an example of a foldable display device.

[0028] Fig. 12A is a schematic diagram illustrating an example of a lighting device according to an embodiment of the present disclosure.

[0029] Fig. 12B is a schematic diagram showing an example of a car equipped with a lamp according to an embodiment of the present disclosure.

[0030] Fig.13A and Fig. 13B An example of smart glasses according to an embodiment of the present disclosure is shown.

[0031] Fig.14 is a conceptual diagram showing the relationship between a display device used with an optical system and an observer. DETAILED DESCRIPTION

[0032] The display device described in International Publication No. 2017 / 169563 and Japanese Patent Application Publication No. 2017-017013 is capable of displaying using light having a wide viewing angle. However, the ratio of light that is helpful for display to light emitted from an organic light-emitting element that emits light having a wide viewing angle is very small. In other words, only a portion of the light emitted from an organic light-emitting element that emits light having a wide viewing angle from the display device is helpful for display. The above-mentioned display device also uses energy to emit light that is not helpful for display, so there is room for improvement in reducing power consumption.

[0033] An aspect of the present disclosure provides a display device which reduces power consumption even when light use efficiency is improved by using a lens.

[0034] A light-emitting device according to an embodiment of the present disclosure includes: a substrate having a main surface; a first light-emitting element and a second light-emitting element arranged on the main surface, wherein light emitted from the first light-emitting element is emitted from a first region, and light emitted from the second light-emitting element is emitted from a second region; a first lens, into which light emitted from the first region enters; and a second lens, into which light emitted from the second region enters. In a direction parallel to the main surface, the distance between the midpoint of the second region and the vertex of the second lens is greater than the distance between the midpoint of the first region and the vertex of the first lens. The second region is smaller than the first region.

[0035] The second light-emitting element may be a light-emitting element configured to emit light at a wide angle of the display device. In the second light-emitting element, the optical member is arranged to be offset compared to the first light-emitting element so as to emit light at a wide angle. In other words, the distance between the midpoint of the second region and the vertex of the second lens in a cross section including the lower electrode, the first lens, and the second lens is greater than the distance between the midpoint of the first region and the vertex of the first lens in the cross section.

[0036] In this case, the contribution rate of the second light-emitting element to the light emission of the display device is lower than the contribution rate of the first light-emitting element to the light emission of the display device. This is because all the light emitted from the first light-emitting element contributes to the light emission of the display device; while only a part of the light emitted from the second light-emitting element contributes to the light emission of the display device.

[0037] In order to reduce the electric energy used by the light emitted in the second light-emitting element but not contributing to the light emission of the display device, the light-emitting area of ​​the second light-emitting element is smaller than the light-emitting area of ​​the first light-emitting element. The light emission of the element decreases as the light-emitting area decreases, but the ratio of light emission and the contribution to the light emission of the display device increase. As a result, the power consumption of the display device is reduced.

[0038] In the specification, the lens may be an optical member including a microlens. The light emitting layer may be made of an organic compound or may be made of an inorganic compound.

[0039] Hereinafter, embodiments will be described with reference to the accompanying drawings. The following embodiments are not intended to limit the present disclosure. Multiple components are described in the embodiments; however, not all of the multiple components are essential to the present disclosure, and the multiple components may be used in any combination. In the accompanying drawings, the same reference numerals represent the same or similar components, and repeated descriptions may be omitted.

[0040] For example, in a white+CF system, the color filter may be a color filter that transmits red light, green light, and blue light, respectively. By means of additive color mixing of these sub-pixels, the organic EL light-emitting device is capable of full-color display. In the following embodiments, an example of a color filter that transmits three colors of light, respectively, is described; however, the configuration is not limited thereto.

[0041] In the specification, the lens may be disposed on the light extraction side of the light emitting device, and the lens may protrude toward the light extraction side. When the light emitting device emits light from both the lower electrode side and the upper electrode side of the light emitting element, each side may be regarded as the light extraction side.

[0042] The planar array may be any type of a stripe array, a square array, a delta array, and a Bayer array. By configuring the primary pixels in a matrix, a light emitting device with a high pixel count may be realized.

[0043] First embodiment

[0044] Figure 1A and Figure 1B is a diagram showing a first light emitting element of a light emitting device according to a first embodiment of the present disclosure. Figure 1A is a cross-sectional view of the first light emitting element. Figure 1B yes Figure 1A A plan view of the first light-emitting element in FIG.

[0045] Figure 1A The light-emitting device is composed of a substrate 100, and has a lower electrode 101, a functional layer 102 including a light-emitting layer, an upper electrode 103, a protective layer 104, a planarization layer 105, a microlens 106, and an insulating layer 107 covering both ends of the lower electrode 101 on the substrate 100. The insulating layer 107 is also called a pixel separation film or a bank. Figure 1A The cross-sectional view shows a cross section perpendicular to the main surface of the substrate 100 . Figure 1B The plan view is a plan view when viewed in a direction perpendicular to the main surface of the substrate 100.

[0046] The insulating layer 107 contacts and covers an end of the lower electrode 101. The functional layer 102 may contact a portion of the lower electrode 101 that is not in contact with the insulating layer 107. A region where the lower electrode 101 and the functional layer 102 contact each other is a light emitting region 108a that emits light by applying an electric field between the lower electrode 101 and the upper electrode 103.

[0047] Can be done through Figure 1B The light emitting area is determined by the fact that light emission during application of an electric field is observed in the same direction of Figure 1A In the embodiment of the present invention, the light emitting area can be determined by measuring the distance from the end of the first insulating layer covering the left end of the lower electrode 101 to the end of the second insulating layer covering the right end of the lower electrode 101. The end of the insulating layer 107 can be a contact point between the insulating layer 107 and the lower electrode 101.

[0048] exist Figure 1B In the embodiment, the light emitting region 108a is surrounded by the insulating layer 107. In other words, the light emitting region 108a can be considered as a region defined by the insulating layer 107 covering the end of the lower electrode 101. In the present embodiment, the light emitting region 108a has a hexagonal shape. Alternatively, the light emitting region may have other polygonal shapes or may have a circular shape. For example, a stripe configuration may be adopted in which a rectangular RGB light emitting region is configured and used to emit light.

[0049] Figure 2A and Figure 2B is a diagram showing a second light emitting element of the light emitting device according to the first embodiment of the present disclosure. Figure 2A is a cross-sectional view of the second light emitting element. Figure 2B yes Figure 2A The cross-sectional view and the plan view are respectively Figure 1A The cross-sectional view and Figure 1B The floor plan is similar.

[0050] The second light-emitting element has a similar structure to the first light-emitting element. In the direction parallel to the main surface of the substrate 100, the distance between the midpoint of the light-emitting region 108b in the second light-emitting element and the vertex of the microlens 106 is greater than the distance between the midpoint of the light-emitting region 108a in the first light-emitting element and the vertex of the microlens 106. In the case where the position of the microlens 106 in the first light-emitting element is the positive position, it can be considered that the position of the microlens 106 in the second light-emitting element is offset. It can also be considered that in a plan view in a direction perpendicular to the main surface of the substrate 100, the distance between the center of the light-emitting region 108b in the second light-emitting element and the vertex of the microlens 106 is greater than the distance between the center of the light-emitting region 108a in the first light-emitting element and the vertex of the microlens 106. Here, the center of the light-emitting region 108a (108b) may be the centroid of the outer shape of the light-emitting region 108a (108b), or may be the centroid of the opening of the insulating layer 107 that defines the light-emitting region 108a (108b).

[0051] In a plane perpendicular to the main surface of the substrate 100, the vertex of the microlens 106 is the position farthest from the main surface of the convex lens. In a plane perpendicular to the main surface of the substrate 100, the vertex of the microlens 106 is the position closest to the main surface of the concave lens. In a cross section parallel to the main surface of the substrate 100, the vertex of the lens can be considered as the center of the lens.

[0052] The light emitting area 108b of the second light emitting element is smaller than the light emitting area 108a of the first light emitting element. In other words, Figure 2A The light emitting area 108b in the figure is used as a line segment ratio Figure 1AThe light-emitting region 108a in is short. It can be considered that the area in contact with the lower electrode 101 of the functional layer 102 is small. In this embodiment, it is desirable that in addition to the light-emitting region 108b of the second light-emitting element being smaller than the light-emitting region 108a of the first light-emitting element, the following conditions are also satisfied. Assume that the difference (S12-S11) between the area S12 of the lower electrode 101 of the second light-emitting element and the area S11 of the lower electrode 101 of the first light-emitting element is ΔS1. Assume that the difference (S22-S21) between the area S22 of the portion of the lower electrode 101 of the second light-emitting element covered by the insulating layer 107 and the area S21 of the portion of the lower electrode 101 of the first light-emitting element covered by the insulating layer 107 is ΔS2. At this time, it is desirable that ΔS1<ΔS2 holds. In addition, it is desirable that the area of ​​the lower electrode 101 is substantially constant between the first light-emitting element and the second light-emitting element, and that the area of ​​the lower electrode 101 covered by the insulating layer 107 in the second light-emitting element is larger than that of the first light-emitting element. In other words, it is desirable to adjust the size of the light emitting region by using the area of ​​the insulating layer 107 covering the lower electrode 101. Therefore, the lower electrode 101 can be formed in the same shape in each light emitting element, so it becomes easy to manufacture the light emitting device. Here, the size of the area or region is the area or size in a plan view in a direction perpendicular to the main surface of the substrate 100.

[0053] In this way, power consumption is reduced by reducing the light emitting area 108b of the second light emitting element.

[0054] on the other hand, Figure 2B 108b is a mode of the light emitting region 108b. In this embodiment, the left and right sides of the hexagonal shape of the light emitting region 108b are arranged more toward the center than the light emitting region 108a. In other words, the light emitting region 108b of the second light emitting element has a hexagonal shape, and at least one side of the hexagonal shape of the light emitting region 108b of the second light emitting element is arranged more toward the inside than the hexagonal shape of the light emitting region 108a of the first light emitting element. The two sides of the hexagonal shape are a pair of sides that are opposite to each other among the sides of the hexagonal shape.

[0055] In this embodiment, two sides of the hexagonal shape are arranged inside the hexagonal shape of the light emitting region 108a. At least one side of the polygonal shape is arranged inside the polygonal shape of the light emitting region 108a of the first light emitting element.

[0056] Comparative Example

[0057] Figure 3is a cross-sectional view showing a comparative example. In the comparative example, the positional relationship between the light emitting area of ​​the second light emitting element and the optical member is different from that of the first light emitting element, but the light emitting area of ​​the second light emitting element has the same size as that of the light emitting area of ​​the first light emitting element. The fact that the positional relationship of the optical member in the second light emitting element is different from that of the optical member in the first light emitting element can be regarded as an optical member offset. The direction of the optical member offset can be the direction in which the light emitted from the light emitting layer is to be refracted.

[0058] like Figure 3 As shown, light from the end of the light emitting region 108a is difficult to be refracted in an oblique direction. On the other hand, light from the center of the light emitting region 108a is easy to be refracted in an oblique direction.

[0059] The light rays traveling toward the left side in the figure, that is, the light rays indicated by "Helpful" in the figure, are light rays that help the light emission of the display device. Assuming that the left side in the figure is the peripheral side of the display area, light traveling in an oblique direction relative to the display surface in the peripheral area located at the peripheral portion of the display area is used. The other light rays, that is, the light rays indicated by "Not Helpful" in the figure, are light rays that do not help the light emission of the display device. Therefore, as described in the first embodiment Figures 1A to 2B In the case of the mode, light utilization efficiency is improved by emitting light only from a region where light can be refracted in an oblique direction, thereby providing a light emitting device with low power consumption.

[0060] A display device that uses light traveling in a direction oblique to a display surface in a peripheral area of ​​the display device is mainly a display device that includes a display unit and an optical system and a user visually recognizes the display unit through the optical system. In this mode of the display device, not allowing unused light to be emitted further provides the following advantages. For example, when unused light enters Fig.14 When the optical system 20 is disposed in the display, the light may be stray light and deteriorate the display quality. In the above embodiment, since light that does not contribute to the display is not emitted, it is also advantageous in reducing stray light.

[0061] In this way, as in the case of the second light-emitting element, the size of the light-emitting area that contributes less to the light emission of the display device is reduced. In this embodiment, a light-emitting device including a microlens is used as an example for description; however, as long as a light-emitting area that contributes less to the light emission of the display device is used, the size of the light-emitting area can be reduced, and it does not matter whether an optical member such as a microlens is provided.

[0062] For example, assuming that the light-emitting device includes a first light-emitting area and a second light-emitting area arranged to surround the first light-emitting area, and the light-emitting element included in the second light-emitting area contributes less to the light emission of the light-emitting device, the size of the light-emitting area of ​​the light-emitting element included in the second light-emitting area can be reduced. Here, the term "arranged to surround the first light-emitting area" can be interpreted as "arranged to surround the first light-emitting area in a plan view in a direction perpendicular to the main surface of the substrate." In other words, the second light-emitting area includes a plurality of second light-emitting elements, and the plurality of second light-emitting elements are arranged to surround the first light-emitting element included in the first light-emitting area in a plan view in a direction perpendicular to the main surface of the substrate.

[0063] Since the second light-emitting area surrounds the first light-emitting area, the second light-emitting area includes an area arranged outside the display device compared to the first light-emitting area. Here, when a plurality of light-emitting elements are arranged on the substrate, the term "outer side" is used to refer to a light-emitting element closer to an end of the substrate than other light-emitting elements as an outer side light-emitting element.

[0064] According to the present embodiment, light emitted from the second light emitting element effectively assists light emission of the display device, thereby reducing power consumption.

[0065] Second embodiment

[0066] Figure 4A and Figure 4B is a diagram showing an example of a light emitting device according to a second embodiment of the present disclosure. Figure 4A Yes Figure 1B As in the case of , a plan view of the light emitting device in a direction perpendicular to the main surface of the substrate. The display area 200 has a plurality of light emitting elements. The positional relationship between the light emitting area and the microlens will be described by using the central portion A' and the peripheral portion A.

[0067] Figure 4B It is along Figure 4A 108a and the microlens 106 directly above the light emitting region 108a. In the cross section, a part of the light emitting element is omitted. The positional relationship between the microlens 106 and the light emitting region changes from A' toward A. Specifically, with the positional relationship between the light emitting region 108a and the microlens 106 directly above the light emitting region 108a as a reference, in the positional relationship between the light emitting region 108c and the microlens directly above the light emitting region 108c, the microlens is relatively shifted to the left side in the figure by the microlens shift amount 300a. The light emitting region 108c is smaller than the light emitting region 108a. Similarly, the light emitting region 108d is smaller than the light emitting region 108c, and the microlens directly above the light emitting region 108d is relatively shifted by the amount of the microlens shift amount 300b. In addition, the light emitting region 108e is smaller than the light emitting region 108d, and the microlens directly above the light emitting region 108e is relatively shifted by the amount of the microlens shift amount 300c.

[0068] In this embodiment, the first light emitting element has a light emitting region 108a, the second light emitting element has a light emitting region 108c, the third light emitting element has a light emitting region 108d, and the fourth light emitting element has a light emitting region 108e.

[0069] In a light emitting element, for example Figure 4A In FIG. 1 , the light emitting element closer to A than A′ is an outer element. The light emitting element farther from A′ can be considered as an outer light emitting element.

[0070] A pattern may be adopted in which the offset of the microlens increases continuously from the center portion A' of the display area toward the peripheral portion A. When the light emitting area decreases continuously or stepwise, light that does not contribute to light emission of the display device decreases, thereby providing a light emitting device with low power consumption.

[0071] Third embodiment

[0072] Figure 5A and Figure 5B is a diagram showing an example of a light emitting device according to a third embodiment of the present disclosure. Figure 5A Yes Figure 1A A cross section perpendicular to the main surface of the substrate as in the case of . Figure 5B Yes Figure 1B A plan view in a direction perpendicular to the main surface of the substrate as in the case of .

[0073] Fig. 6A and Figure 6B is a diagram showing an example of a light emitting device according to a third embodiment of the present disclosure.

[0074] Fig. 6A Yes Figure 1A A cross section perpendicular to the main surface of the substrate as in the case of . Figure 6B Yes Figure 1B A plan view in a direction perpendicular to the main surface of the substrate as in the case of .

[0075] FIG. 5A to FIG. 6B A configuration is shown in which the light emitting area is smaller than the light emitting area of ​​the first light emitting element. Figure 5A and Figure 5B and Fig. 6A and Figure 6B The difference is that Figure 5A and Figure 5B The left side of the light emitting area is shown to be smaller than the light emitting area of ​​the first light emitting element; and Fig. 6A and Figure 6B The right side is shown getting smaller.

[0076] exist Figure 5B, the first light-emitting element is arranged on the right side of the light-emitting element having the light-emitting area 108f. In other words, the right side in the figure is the center side of the display area. In other words, in the light-emitting area of ​​the light-emitting element having the light-emitting area 108f, the side arranged on the inner side compared to the hexagonal shape of the light-emitting area of ​​the first light-emitting element is one side of the polygonal shape, and the one side is the side closest to the first light-emitting element among the sides of the hexagonal shape.

[0077] On the other hand, in the light-emitting area of ​​the light-emitting element having the light-emitting area 108g, the side arranged on the inner side compared to the hexagonal shape of the light-emitting area of ​​the first light-emitting element is one side of the polygonal shape, and the one side is the side farthest from the first light-emitting element among the sides of the hexagonal shape.

[0078] In the third embodiment, as in the case of the first embodiment, light that does not contribute to light emission of the display device is also reduced, thereby reducing power consumption of the light emitting device.

[0079] Fourth embodiment

[0080] Figure 7 is a diagram showing an example of a light-emitting device according to a fourth embodiment of the present disclosure. In addition to the first embodiment, color filters 109a to 109c are arranged on the planarization layer 105. Pixels including color filters 109a to 109c, respectively, are considered to be sub-pixels, and a group of three sub-pixels can be considered to be one main pixel. The term "pixel includes a color filter" may mean that the light passing through the color filter is the light emitted from the light-emitting layer of the pixel. The three colors of red, green, and blue are particularly desired sub-pixel colors, and full-color display can be achieved by means of additive color mixing of these sub-pixels.

[0081] The planar array of the secondary pixels may be any type of a stripe array, a square array, a delta array, and a Bayer array. By arranging the primary pixels in a matrix, a display device with a high pixel count may be realized.

[0082] Each of the color filters 109a to 109c is also arranged to be offset from the center of the light emitting region 108b as in the case of the microlens 106. At this time, the color filter 109b can be arranged in a straight line connecting the vertex B of the microlens 106 and the end B' of the light emitting region adjacent to the first light emitting element.

[0083] In addition, the color filter 109b is arranged in a straight line connecting the end C of the microlens and the end C' of the light emitting area. At least two types of color filters may be arranged in a line segment connecting the vertex of the microlens located just above the light emitting area 108b and the light emitting area adjacent to the light emitting area 108b. This is to reduce the emission of light accidentally emitted from the adjacent light emitting area through the microlens.

[0084] Light emitted from the light emitting region 108b passes through the color filter 109b, and the light may be refracted to an oblique direction by the microlens 106, and does not pass through the color filters 109a, 109c of other sub-pixels, so color purity increases.

[0085] Figure 8 is a cross-sectional view showing the relationship between the light emitting region 108 and the microlens 106 .

[0086] exist Figure 8 In the figure, a microlens 106 with a height of h, a radius of r, and a refractive index of n is formed.

[0087] Light is emitted from the light emitting region 108 at an angle θ1 and refracted at an angle θ2 at point A of the microlens 106. The inclination of the microlens at point A relative to the tangent line is defined as angle α. According to Snell's law, the following equation 1 holds. In the figure, there is a portion where α+θ1 is β.

[0088] 1×sin(θ2+α)=n×sin(α+θ1) (1)

[0089] When Equation 1 is solved for θ1, θ1 is expressed by Equation 2.

[0090] θ1=sin -1 {sin(θ2+α) / n}-α (2)

[0091] In the case where the offset amount of the vertex of the microlens 106 from the center of the light emitting region 108 is Xshift and the distance from the light emitting region 108 to the microlens 106 is L, the size X of the light emitting region is represented by the following Equation 3.

[0092] X=rh×tan(θ1) (3)

[0093] The size X of the light emitting area 108 is expressed by Equation 4 according to Equations 2 and 3.

[0094] X = rh × tan[sin -1 {sin(θ2+α) / n}-α] (4)

[0095] At this time, the relationship between the angle θ1 of the light emitted from the light emitting region 108 and the shift amount Xshift of the vertex of the microlens 106 from the center of the light emitting region 108 is expressed by Inequality 5.

[0096] tan -1 (Xshift / h+L)>θ1 (5)

[0097] In the calculation by wave optics simulation, the offset between the vertex of the microlens 106 and the center of the light emitting region 108 and the aperture ratio of the light emitting region were obtained, and the results are shown in Table 1. However, in reality, there are other components such as the protective layer 104 and the color filter 109 between the microlens 106 and the light emitting region 108, and errors may occur.

[0098] Table 1

[0099] The distance between the vertex of the microlens and the center of the light-emitting area Aperture ratio of the light-emitting area 0μm 50％ 0.5μm 46％ 1.0μm 40％ 1.5μm 33％

[0100] Other components in the embodiment

[0101] substrate

[0102] In the specification, the substrate 100 is made of a material capable of supporting the lower electrode 101, the functional layer 102 and the upper electrode 103, and is suitably glass, plastic, silicon, etc., for example. The plastic may be flexible. Examples of flexible substrates include resins and organic materials, and specifically include polyimide resins, polyacrylic resins, and PMMA. Switching elements such as transistors, wiring, or interlayer dielectric films (not shown) may be formed on or in the substrate 100. A plurality of switching elements may be provided corresponding to a plurality of light-emitting elements.

[0103] Lower electrode

[0104] From the viewpoint of luminous efficiency, the lower electrode 101 can be made of a metal material having a reflectivity of visible light greater than or equal to 50%. Specifically, metals such as Al and Ag or alloys made by adding Si, Cu, Ni, Nd, Ti, etc. to one of the metals can be used. The reflective electrode can have a barrier layer on the light output side. The material of the barrier layer can be a metal such as Ti, W, Mo and Au, or an alloy of one of these metals, or a transparent conductive oxide such as ITO and IZO. The lower electrode can be an anode, and in this case, the upper electrode can be a cathode. On the other hand, when the lower electrode is a cathode, the upper electrode can be an anode.

[0105] The above describes the case where the lower electrode is a reflective electrode and the upper electrode is a light extraction electrode. Alternatively, the lower electrode may be a light extraction electrode. When the lower electrode is a light extraction electrode, the lower electrode has the same light transmittance as the case of the upper electrode (described later). Whether the electrode is a lower electrode or an upper electrode is determined by the distance from the substrate. The electrode close to the substrate having a transistor for controlling light emission, etc. is the lower electrode.

[0106] Insulation layer

[0107] The insulating layer 107 is provided in such a manner as to cover the end of the lower electrode 101, and an opening is provided in such a manner as to expose a portion of the lower electrode 101. The opening may be a light emitting region 108. The insulating layer 107 is made of an inorganic material such as silicon nitride (SiN), silicon oxynitride (SiON), and silicon oxide (SiO). The insulating layer is also referred to as a pixel separation film or a bank.

[0108] The insulating layer can be formed using a known technique such as a sputtering method and a chemical vapor deposition method (CVD method), etc. Alternatively, the insulating layer 107 can be made of an organic material such as an acrylic resin and a polyimide resin.

[0109] Functional layer

[0110] The functional layer 102 has a light emitting layer and is disposed on the lower electrode 101. The functional layer 102 can be formed by using a known technique such as a vapor deposition method and a spin coating method.

[0111] The functional layer 102 may be composed of a plurality of layers, or may be a stack of a plurality of layers. The plurality of layers may include a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, a hole blocking layer, an electron transport layer, an electron injection layer, etc. Other layers such as a charge generation layer may be included between these layers.

[0112] Holes injected from the anode and electrons injected from the cathode are recombined in the light emitting layer to emit light. The functional layer 102 may be an organic layer or may be an inorganic layer.

[0113] The light-emitting layer may be composed of multiple layers or may be composed of a single layer. When there is a light-emitting layer composed of multiple layers, a red light-emitting material, a green light-emitting material and a blue light-emitting material may be included in the layer of the light-emitting layer. White light may be obtained by mixing the luminescent colors. Light-emitting materials of complementary colors, such as a blue light-emitting material and a yellow light-emitting material, may be included in the organic layer.

[0114] The light-emitting material may be a material made of an organic compound, or may be a material having quantum dots. When an organic compound is used, the light-emitting layer may include a first material and a second material. The first material is a material that mainly emits light, and may be referred to as a dopant or a guest. On the other hand, the second material is a material that has a larger weight ratio in the light-emitting layer than the first material, and may be referred to as a host. The first material may be a material having a fluoranthene skeleton, a material having a pyrene skeleton, a material having a A material having an anthracene skeleton or a material having an anthracene skeleton. The structure of the material having an anthracene skeleton is an anthracene structure and can be referred to as an anthracene derivative.

[0115] The functional layer 102 may be shared by a plurality of pixels. In this case, it may be considered that the light emitting device includes a plurality of lower electrodes and a single functional layer. However, the configuration is not limited thereto. The entire or a portion of the functional layer 102 may be patterned pixel by pixel.

[0116] Upper electrode

[0117] The upper electrode 103 is arranged on the functional layer 102 and has light transmittance. The upper electrode 103 may be a semi-transparent material having a property of transmitting a part of the light reaching its surface and reflecting another part (i.e., semi-transparent reflective property). The material of the upper electrode 103 is, for example, a semi-transparent material composed of a transparent material such as a transparent conductive oxide, an elemental metal such as aluminum, silver, and gold, an alkali metal such as lithium and cesium, an alkaline earth metal such as magnesium, calcium, and barium, or an alloy material containing any of these metal materials.

[0118] It is desirable that the semi-transparent material is an alloy mainly containing magnesium or silver. As long as the upper electrode 103 has a desired transmittance, the upper electrode 103 may be a stacked body of the above-mentioned materials.

[0119] In addition, the upper electrode 103 may be arranged over a plurality of pixels.

[0120] The case where the upper electrode 103 is a light extraction electrode is described above. Alternatively, the upper electrode 103 may be a reflective electrode. In this case, as described for the lower electrode 101, the upper electrode 103 may be formed by using a material having reflective properties, and is shown as the material of the lower electrode 101.

[0121] The cathode can be made into a top emission element by using an oxide conductive layer made of ITO or the like, or can be made into a bottom emission element by using a reflective electrode made of aluminum (Al) or the like. The configuration of the cathode is not limited. The method of forming the cathode is not limited. When using a DC and AC sputtering method, etc., the film has good coverage and is easy to reduce resistance, so it is more desirable.

[0122] Protective layer

[0123] The protective layer 104 is formed to cover the light emitting element and has light transmittance. The protective layer 104 desirably contains an inorganic material having low permeability to oxygen and moisture from the outside. Specifically, the protective layer 104 may be silicon nitride (SiN), silicon oxynitride (SiON), silicon oxide (SiO x), aluminum oxide (Al2O3), titanium oxide (TiO2), etc. In terms of protective performance, inorganic materials, namely SiN, SiON or Al2O3, are desirable. The protective layer 104 can be formed using a chemical vapor deposition method (CVD method), an atomic layer deposition method (ALD method) or a sputtering method. When the protective layer 104 has sufficient moisture-proof performance, the protective layer 104 may have a single-layer structure or may have a stacked structure obtained by a combination of the above-mentioned materials and formation methods. The protective layer 104 may have, for example, a stacked structure of a layer formed by an ALD method and a layer formed by a sputtering method. Alternatively, the protective layer 104 may have a structure in which a layer formed by a CVD method, a layer formed by an ALD method, and a layer formed by a CVD method are sequentially arranged.

[0124] The protection layer 104 may be disposed over the plurality of pixels.

[0125] Planarization layer

[0126] The planarization layer 105 is arranged on the protective layer 104. The planarization layer 105 is made of a material having light transmittance, and may be made of an inorganic material or an organic material. The planarization layer 105 is a layer that reduces the concavities and convexities formed on the protective layer 104. When the concavities and convexities formed on the protective layer 104 are small or when the protective layer 104 itself is planarized by, for example, grinding the protective layer 104 itself, the planarization layer 105 does not need to be provided.

[0127] The planarization layer 105 is a layer disposed between the protective layer 104 and other components. Specifically, the planarization layer 105 may be polyvinyl carbazole resin, polycarbonate resin, polyester resin, ABS resin, acrylic resin, polyimide resin, phenolic resin, epoxy resin, silicone resin, urea-formaldehyde resin, etc.

[0128] Optical components

[0129] An optical component is formed on the planarization layer 105. The optical component may be a lens or the like, and specifically may be a microlens. The microlens may be a lens of small diameter. The microlens may be formed by exposure and development processing, and may be formed by a reflow method, an area tone modulation method, an etch-back method, or the like. Specifically, a film (photoresist film) made of a material for forming a microlens is formed, and the photoresist film is exposed and developed by using a mask with continuous tone modulation. A grayscale mask or an area tone modulation mask may be used as such a mask. The area tone modulation mask enables light irradiation with continuous tone changes on the imaging surface by changing the distribution of the dot density of a light shielding film having a resolution less than or equal to the resolution of the exposure device.

[0130] Alternatively, the lens shape may be adjusted by etching back the microlenses formed by the exposure and development processes.

[0131] Alternatively, microlenses caused by surface tension may be formed by patterning and reflowing the resin to melt and solidify the resin. When an organic layer is used as the functional layer 102, the temperature of the reflow process is set to be lower than or equal to a predetermined temperature. Lower than or equal to the predetermined temperature is, for example, lower than or equal to 120°C.

[0132] At this time, the microlens 106 is not limited to a spherical microlens, and may be a non-spherical microlens or an asymmetric microlens.

[0133] Color Filters

[0134] A color filter may be provided on the protective layer 104. For example, a color filter designed in consideration of the size of each light-emitting element may be provided on another substrate, and the substrate may be bonded to the substrate on which the light-emitting element is provided. Alternatively, a color filter may be patterned on the protective layer 104 using photolithography. The color filter may be made of a polymer. Filters that transmit red light, green light, and blue light, respectively, may typically be used as color filters. In other words, two or more color filters are provided, and the first color filter and the second color filter are filters that transmit light of wavelengths different from each other, respectively. A third color filter may be further provided, and the third color filter transmits light of a wavelength different from any one of the first color filter and the second color filter.

[0135] When a color filter is provided, a planarization layer may be provided on both the upper and lower sides of the color filter, and the materials of the planarization layers may be the same or may be different from each other. Specifically, the material of the planarization layer may be polyvinyl carbazole resin, polycarbonate resin, polyester resin, ABS resin, acrylic resin, polyimide resin, phenolic resin, epoxy resin, silicone resin, urea-formaldehyde resin, etc.

[0136] Opposite substrate

[0137] An opposing substrate may be provided on the above-mentioned member. The opposing substrate is provided at a position facing the above-mentioned substrate 100, so it is called an opposing substrate. The material of the opposing substrate may be the same as that of the substrate 100. When the substrate 100 is a first substrate, the opposing substrate may be a second substrate.

[0138] The light-emitting device in the above embodiment may be an organic light-emitting device in which a functional layer is an organic compound layer.

[0139] Use of a light emitting device according to an embodiment of the present invention

[0140] The light-emitting devices according to the embodiments of the present disclosure can be used as components of display devices or components of lighting devices. In addition, there are also uses such as light-emitting devices including exposure light sources for electronic photographic image forming devices and color filters for backlights or white light sources for liquid crystal display devices.

[0141] The display device may be an image information processing device. The image information processing device includes: an image input unit that inputs image information from an area array CCD, a linear CCD, a memory card, etc.; and an information processing unit that processes the input information. The image information processing device displays the input image on the display unit.

[0142] The display unit of the camera device or inkjet printer may have a touch panel function. The driving system of the touch panel function may be an infrared radiation system, a capacitance system, a resistance film system, or an electromagnetic induction system, and is not limited. The display device may be used as a display unit of a multifunction printer.

[0143] Next, a display device according to the present embodiment will be described with reference to the drawings.

[0144] Fig. 9 1 is a schematic diagram showing an example of a display device according to the present embodiment. The display device 1000 may include a touch panel 1003, a display panel 1005, a frame 1006, a circuit board 1007 and a battery 1008 between a top cover 1001 and a bottom cover 1009. A flexible printed circuit (FPC) 1002 is connected to the touch panel 1003. A flexible printed circuit (FPC) 1004 is connected to the display panel 1005. A transistor is arranged on or in the circuit board 1007. When the display device is not a portable device, it is not necessary to arrange the battery 1008, and when the display device is a portable device, the battery 1008 may be arranged in other positions. A control unit for controlling the display of the display device may be configured by using the above-mentioned transistors, etc. A known method using a CPU, etc. may be used as a control unit. In other words, the display device according to the present embodiment includes a light-emitting device and a control unit for controlling the display of the light-emitting device. The display device may be an active matrix display device.

[0145] The display device according to the present embodiment may include red, green and blue color filters. The red, green and blue color filters may be arranged in a delta array or a stripe array.

[0146] The display device according to this embodiment can be used in a display unit of a portable terminal. In this case, the display device can have a display function and an operation function. The portable terminal can be a cellular phone such as a smart phone, a tablet computer, a head-mounted display device, etc. When used in a display unit, the display device can be used together with a magnifying optical system.

[0147] The display device according to the present embodiment can be used in a display unit of an image pickup device, which includes an optical unit having a plurality of lenses and an image pickup device that receives light passing through the optical unit. The image pickup device may include a display unit that displays information acquired by the image pickup device. The display unit may be a display unit exposed to the outside of the image pickup device, or may be a display unit arranged in a viewfinder. The image pickup device may be a digital still camera or a digital video camera.

[0148] Fig. 10A 11 is a schematic diagram showing an example of an image pickup device according to the present embodiment. The image pickup device 1100 may include a viewfinder 1101, a rear display 1102, an operation unit 1103, and a housing 1104. The viewfinder 1101 may include a display device according to the present embodiment. In this case, the display device is not limited to displaying only the image to be captured, and may display environmental information, image pickup instructions, and the like. The environmental information may include the intensity of external light, the direction of external light, the moving speed of the subject, the possibility of the subject being shielded by an obstruction, and the like.

[0149] Since the best time for video recording is very short, it is desirable to display information as early as possible. Therefore, in a display device using a light-emitting device according to an embodiment of the present disclosure, it is desirable to use an organic light-emitting device. This is because an organic light-emitting element has a high response speed. Compared with a liquid crystal display device, a display device using an organic light-emitting element is more suitable for use in these devices that require a higher display speed.

[0150] The camera device 1100 includes an optical unit (not shown). The optical unit has a plurality of lenses and forms an image on an image pickup device housed in the housing 1104. The plurality of lenses can adjust the focus by adjusting the relative positions of the lenses. This operation can be performed automatically. The camera device can be referred to as a photoelectric conversion device. The photoelectric conversion device can include a method for detecting a difference from a previous image, a method for extracting an image from a continuously recorded image, etc. as a camera method, rather than sequentially capturing images.

[0151] Fig. 10B 1 is a schematic diagram showing an example of an electronic device according to the present embodiment. The electronic device 1200 includes a display unit 1201, an operating unit 1202, and a housing 1203. The housing 1203 may include a circuit, a printed board having the circuit, a battery, and a communication unit. The operating unit 1202 may be a button, or may be a touch panel type response unit. The operating unit may be a biometric unit for identifying fingerprints for example to unlock. An electronic device including a communication unit may be considered as a communication device. The electronic device may further have a camera function by including a lens and a camera device. An image captured by the camera function is displayed on the display unit. The electronic device may be a smart phone, a laptop computer, etc.

[0152] Fig.11A and Fig. 11B is a schematic diagram showing an example of a display device according to the present embodiment. Fig.11A 1300 is a display device such as a TV monitor or a PC monitor. The display device 1300 includes a frame 1301 and a display unit 1302. The light emitting device according to any embodiment may be used in the display unit 1302.

[0153] The display device 1300 includes a support frame 1301 and a base 1303 of a display unit 1302. The base 1303 is not limited to Fig.11A The bottom edge of the frame 1301 can be used as a base.

[0154] The frame 1301 and the display unit 1302 may be curved, and the radius of curvature may be greater than or equal to 5000 mm and less than or equal to 6000 mm.

[0155] Fig. 11B is a schematic diagram showing another example of the display device according to the present embodiment. Fig. 11B The display device 1310 is configured to be foldable and is a so-called foldable display device. The display device 1310 includes a first display unit 1311, a second display unit 1312, a housing 1313, and a folding point 1314. The first display unit 1311 and the second display unit 1312 may each include a light-emitting device according to any embodiment. The first display unit 1311 and the second display unit 1312 may constitute a seamless display device. The first display unit 1311 and the second display unit 1312 may be separated at a folding point. The first display unit 1311 and the second display unit 1312 may display different images, respectively, or the first display unit 1311 and the second display unit 1312 may display one image.

[0156] Fig. 12A 14 is a schematic diagram showing an example of a lighting device according to the present embodiment. The lighting device 1400 may include a housing 1401, a light source 1402, a circuit board 1403, a filter 1404, and a light diffusion unit 1405. The light source 1402 may include an organic light emitting element according to the present embodiment. The filter 1404 may be a filter that improves the color rendering of the light source 1402. The light diffusion unit 1405 can effectively diffuse light from the light source 1402 for lighting, etc., to transmit the light to a larger range. The filter 1404 and the light diffusion unit 1405 may be arranged on the light emitting side of the lighting. If necessary, a cover may be provided at the outermost portion.

[0157] The lighting device 1400 is a device for lighting a room, for example. The lighting device 1400 can emit any light of white, daylight color, and other colors from blue to red. The lighting device 1400 may include a light modulation circuit that modulates light of any of those colors. The lighting device may include an organic light emitting element according to an embodiment of the present disclosure and a power supply circuit connected to those elements. The power supply circuit is a circuit that converts an AC voltage into a DC voltage. The color temperature of white is 4200K, and the color temperature of daylight color is 5000K. The lighting device 1400 may include a color filter.

[0158] The lighting device 1400 according to the present embodiment may include a heat dissipation unit. The heat dissipation unit is used to release the heat inside the device to the outside of the device, and may be made of metal with high specific heat, liquid silicon, etc.

[0159] Fig. 12B 15 is a schematic diagram of a car as an example of a moving body according to the present embodiment. The car includes a tail light as an example of a lamp. The car 1500 includes a tail light 1501, and can be configured to turn on the tail light 1501 when a braking operation or the like is performed.

[0160] The tail lamp 1501 may include an organic light emitting element according to the present embodiment. The tail lamp 1501 may include a protective member for protecting the organic light emitting element. The protective member may be made of any material as long as it has a certain degree of high strength, and the protective member is desirably made of polycarbonate or the like. Furan dicarboxylic acid derivatives, acrylonitrile derivatives, etc. may be mixed with polycarbonate.

[0161] The automobile 1500 may include a vehicle body 1503 and a window 1502 fixed to the vehicle body 1503. The windows 1502 other than the windows for observing the front and rear of the automobile 1500 may be transparent displays. The transparent display may include an organic light emitting element according to the present embodiment. In this case, the constituent material of the electrode and the like of each organic light emitting element is composed of a transparent member.

[0162] The mobile object according to the present embodiment may be a ship, an airplane, an unmanned aircraft, etc. The mobile object may include a main body and a lamp provided on the main body. The lamp may emit light to notify the position of the main body. The lamp includes the organic light emitting element according to the present embodiment.

[0163] Reference Fig.13A and Fig. 13B The application examples of the display device of each embodiment described above are described. The display device can be applied to a wearable system as a wearable device, such as smart glasses, HMD, and smart contact lenses. The camera and display device used in such an application example includes a camera device capable of photoelectric conversion of visible light and a display device capable of emitting visible light.

[0164] Fig.13A Glasses 1600 (smart glasses) according to one application example are shown. An imaging device 1602 such as a CMOS sensor and a SPAD is provided on the surface side of a lens 1601 of the glasses 1600. In addition, the display device in any of the above embodiments is provided on the back side of the lens 1601.

[0165] The glasses 1600 further include a controller 1603. The controller 1603 serves as a power source to supply power to the camera 1602 and the display device in any embodiment. The controller 1603 controls the operation of the camera 1602 and the display device. An optical system for focusing light to the camera 1602 is formed in the lens 1601.

[0166] Fig. 13B Glasses 1610 (smart glasses) according to an application example are shown. Glasses 1610 include a controller 1612 and a camera corresponding to the camera 1602, and a display device is installed in the controller 1612. The camera in the controller 1612 and an optical system for projecting light emitted from the display device are formed in a lens 1611, and an image is projected onto the lens 1611. The controller 1612 serves as a power supply for supplying power to the camera and the display device, and also controls the operation of the camera and the display device. The controller 1612 may include a sight line detection unit for detecting the sight line of the wearer. Infrared radiation may be used to detect the sight line. The infrared emitting unit emits infrared light to the eyeball of the user staring at the display image. The infrared light emitted and reflected from the eyeball is detected by the camera unit including a light receiving element. Thus, a captured image of the eyeball is obtained. A reducer is provided for reducing the light from the infrared emitting unit to the display unit in a plan view, thereby reducing the degradation of image quality.

[0167] The user's line of sight toward the display image is detected from a captured image of the eyeball obtained by image capture using infrared light. Selected known techniques can be applied to line of sight detection using the captured image of the eyeball. As an example, a line of sight detection method based on a Purkinje image caused by reflection of irradiated light on the cornea can be used.

[0168] More specifically, a line of sight detection process based on the pupil-corneal reflection method is performed. By using the pupil-corneal reflection method, a line of sight vector indicating the direction (rotation angle) of the eyeball is calculated based on the pupil image and Purkinje image contained in the captured image of the eyeball. Thus, the user's line of sight is detected.

[0169] The display device according to the embodiment of the present disclosure may include an imaging device having a light receiving element, and may control a display image of the display device according to information on a line of sight of a user from the imaging device.

[0170] Specifically, the display device determines a first visual field area where the user is gazing and a second visual field area other than the first visual field area according to the visual line information. The first visual field area and the second visual field area may be determined by a controller of the display device, or the first visual field area and the second visual field area determined by an external controller may be received. In the display area of ​​the display device, the display resolution of the first visual field area may be controlled to be higher than the display resolution of the second visual field area. In other words, the resolution of the second visual field area may be lower than the resolution of the first visual field area.

[0171] The display area may include a first display area and a second display area different from the first display area, and an area with a higher priority may be determined from the first display area and the second display area according to the line of sight information. The first field of view area and the second field of view area may be determined by a controller of the display device, or the first field of view area and the second field of view area determined by an external controller may be received. The resolution of the area with a higher priority may be controlled to be higher than the resolution of the area other than the area with a higher priority. In other words, the resolution of the area with a relatively lower priority may be reduced.

[0172] AI can be used to determine the first field of view area or an area with a higher priority. AI can be a model constructed to estimate the angle of sight and the distance from the image of the eyeball to the subject in front of the sight by using the image of the eyeball and the corresponding direction that the eyeball of the image actually observes as training data. The display device or the camera device or the external device may include an AI program. When the external device includes an AI program, the AI ​​program is sent to the display device via communication.

[0173] When display control is performed based on line of sight detection, it is applicable to smart glasses that also include a camera device for photographing the outside. The smart glasses can display the photographed external information in real time.

[0174] As described above, in the case of a device using the organic light emitting element according to this embodiment, stable display with good image quality can be performed even for a long period of time.

[0175] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the claims is to be accorded the broadest interpretation so as to encompass all such modifications, equivalent structures, and functions.

Claims

1. A light emitting device, comprising: a substrate having a main surface; A first light emitting element and a second light emitting element are arranged on the main surface, wherein light emitted from the first light emitting element is emitted from the first region, and light emitted from the second light emitting element is emitted from the second region; a first lens into which light emitted from the first region enters; and a second lens, the light emitted from the second area entering the second lens, The invention is characterized in that, in a direction parallel to the main surface, the distance between the midpoint of the second region and the vertex of the second lens is greater than the distance between the midpoint of the first region and the vertex of the first lens, the midpoint of the first region is the centroid of the outer shape of the first region, and the midpoint of the second region is the centroid of the outer shape of the second region, and The second area is smaller than the first area.

2. The light emitting device according to claim 1, further comprising: a third light emitting element that emits light from a third region; and a third lens, the light emitted from the third region enters the third lens, wherein, in a direction parallel to the principal surface, a distance between a midpoint of the third region and a vertex of the third lens is greater than a distance between a midpoint of the second region and a vertex of the second lens, and The third area is smaller than the second area.

3. The light emitting device according to claim 1, wherein: The first light emitting element includes a lower electrode, a light emitting layer, and an upper electrode in sequence, and includes a first insulating layer and a second insulating layer covering both ends of the lower electrode respectively, and The midpoint of the first region is a midpoint of a line segment connecting an end portion of the first insulating layer and an end portion of the second insulating layer.

4. The light emitting device according to claim 1, wherein: The first lens and the second lens are disposed closer to a light extraction side of the light emitting device than the first light emitting element and the second light emitting element.

5. The light emitting device according to claim 1, wherein The light emitting area of ​​the light emitting device includes a first light emitting area and a second light emitting area surrounding the first light emitting area, The first light emitting element is arranged in the first light emitting area, and The second light emitting element is arranged in the second light emitting area.

6. The light emitting device according to claim 1, wherein: The first region and the second region both have a polygonal shape, and At least one side of the polygonal shape of the second region is arranged on an inner side compared to the polygonal shape of the first region.

7. The light emitting device according to claim 6, wherein: Compared to the polygonal shape of the first area, two sides of the polygonal shape of the second area are arranged on the inner side, and Among the sides of the polygonal shape, the two sides are opposite to each other.

8. The light emitting device according to claim 6, wherein: The first light emitting element is included in a first light emitting region of the light emitting device, The second light emitting element is included in a second light emitting area surrounding the first light emitting area, One side of the polygonal shape of the second region is arranged on the inner side compared to the polygonal shape of the first region, and Among the sides of the polygonal shape, the side is closest to the first light emitting area.

9. The light emitting device according to claim 1, wherein: The light emitting area of ​​the light emitting device includes a first light emitting area and a second light emitting area surrounding the first light emitting area, The first light emitting element is arranged in the first light emitting area, The second light emitting element is arranged in the second light emitting area, The light emitting device further comprises: a second color filter into which light emitted from the second region enters; a fourth light emitting element disposed adjacent to the second light emitting element and emitting light from a fourth region; and a fourth color filter into which light emitted from the fourth region enters, and the fourth color filter is configured to transmit light having a wavelength different from that of light transmitted by the second color filter, and The second color filter and the fourth color filter are arranged in a line segment connecting a vertex of the second lens and the fourth region.

10. The light emitting device according to claim 1, wherein When the height of the second lens is h, the radius of the second lens is r, and the refractive index of the second lens is n, The angle of light emitted from the second region is θ1, The angle of the second lens at a point where light emitted from the second area is refracted by the second lens is α, and the angle of the refracted light is θ2, The vertex of the second lens is offset from the center of the second region by Xshift, and When the distance from the second region to the second lens is L, The width X of the second region is expressed as follows: X=rh×tan[sin -1 {sin(θ2+α) / n}-α], and tan -1 (Xshift / h+L)>θ1。 11. A light emitting device, comprising: a substrate having a main surface; A first light emitting element and a second light emitting element are arranged on the main surface, wherein light emitted from the first light emitting element is emitted from the first region, and light emitted from the second light emitting element is emitted from the second region; a first optical member into which light emitted from the first region enters; and a second optical member, the light emitted from the second area entering the second optical member, The invention is characterized in that, in a direction parallel to the main surface, the distance between the midpoint of the second region and the midpoint of the second optical member is greater than the distance between the midpoint of the first region and the midpoint of the first optical member, the midpoint of the first region is the centroid of the outer shape of the first region, and the midpoint of the second region is the centroid of the outer shape of the second region, and The second area is smaller than the first area.

12. The light emitting device according to claim 11, wherein The first optical member and the second optical member are a first lens and a second lens, respectively, and The midpoint of the first optical member and the midpoint of the second optical member are the vertex of the first lens and the vertex of the second lens, respectively.

13. A display device comprising: A light emitting device according to any one of claims 1 to 12; and A control unit is configured to control the display of the light emitting device.

14. A camera device, comprising: an optical unit having a plurality of lenses; an imaging device configured to receive light passing through the optical unit; and a display unit configured to display an image captured by the imaging device, Wherein, the display unit comprises a light emitting device according to any one of claims 1 to 12.

15. An electronic device comprising: A display unit comprising a light emitting device according to any one of claims 1 to 12; a housing, wherein the display unit is disposed on the housing; and A communication unit is disposed in the housing and configured to communicate with an external source.

16. A lighting device comprising: A light source comprising a light emitting device according to any one of claims 1 to 12; and A light diffusion unit or an optical film configured to transmit light emitted from the light source.

17. A mobile object, comprising: A lamp comprising a light emitting device according to any one of claims 1 to 12; and A main body is provided with the lamp.

Images