Light-emitting device, wearable device, display, photoelectric conversion device, electronic apparatus, illumination device, and movable body

Abstract

To provide a technique advantageous for preventing a reduction in image quality caused by stitch exposure in a light-emitting device using organic light-emitting elements.SOLUTION: A light-emitting device includes a substrate comprising, on its principal surface, a display area where a plurality of pixels is arranged. The principal surface includes a first area including a first conductive pattern, and a second area including a second conductive pattern and adjacent to each other to the first area. Each of the plurality of pixels includes an organic light-emitting element, and a drive transistor supplying current according to a luminance signal to the organic light-emitting element. The first conductive pattern and the second conductive pattern each include a conductive pattern connected to a gate electrode of the drive transistor of one of the plurality of pixels. The first area and the second area are adjacent to each other with a boundary therebetween involving displacement between the first conductive pattern and the second conductive pattern. The boundary does not pass through the center of the display area.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a light-emitting device, a wearable device, a display device, a photoelectric conversion device, an electronic device, a lighting device, and a moving object. [Background technology]

[0002] In recent years, with the development of virtual reality (VR) and augmented reality (AR) technologies, there has been a demand for higher-resolution light-emitting devices using organic light-emitting elements such as organic light-emitting diodes (OLEDs). To increase resolution, micro-OLEDs are known, in which transistors are formed on silicon wafers using semiconductor microprocessing technology. Furthermore, there is a demand for light-emitting devices with more pixels, resulting in a demand for larger-sized light-emitting devices. However, the exposure size of exposure machines used in semiconductor microprocessing is generally approximately 33 mm x 26 mm. To manufacture large-sized light-emitting devices, it is considered to divide the exposure area into two or more areas and perform stitching exposure. Patent Document 1 discloses a method for flexibly setting the position of stitching between adjacent patterns in a semiconductor device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-064001 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 shows that the joints are set in a visually inconspicuous position in an imaging device, etc. However, Patent Document 1 does not disclose the influence on image quality caused by joint exposure in a light-emitting device using an organic light-emitting element.

[0005] An object of the present invention is to provide a technique that is advantageous in suppressing degradation of image quality caused by stitching exposure in a light-emitting device using an organic light-emitting element. [Means for solving the problem]

[0006] In view of the above problems, a light-emitting device according to an embodiment of the present invention is a light-emitting device including a substrate having a display area in which a plurality of pixels are arranged on a main surface, the main surface including a first area including a first conductive pattern and a second area including a second conductive pattern and adjacent to the first area, each of the plurality of pixels including an organic light-emitting element and a drive transistor that supplies a current to the organic light-emitting element according to a luminance signal, the first conductive pattern and the second conductive pattern each including a conductive pattern connected to a gate electrode of the drive transistor of any of the plurality of pixels, the first area and the second area being adjacent to each other via a boundary that involves a misalignment between the first conductive pattern and the second conductive pattern, and the boundary does not pass through the center of the display area. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a technique that is advantageous in suppressing deterioration in image quality caused by stitching exposure in a light-emitting device using an organic light-emitting element. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a cross-sectional view showing a configuration example of a light emitting device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a circuit diagram showing a configuration example of a pixel of the light-emitting device in FIG. [Figure 3] FIG. 3 is a plan view showing an example of the arrangement of pixels in FIG. 2. [Figure 4] FIG. 2 is a plan view showing a configuration example of the light emitting device of FIG. [Figure 5] FIG. 2 is a plan view showing a configuration example of the light emitting device of FIG. [Figure 6] FIG. 2 is a plan view showing a configuration example of the light emitting device of FIG. [Figure 7] FIG. 2 is a plan view showing a configuration example of the light emitting device of FIG. [Figure 8] FIG. 2 is a diagram showing an example of the configuration of a head-mounted display using the light-emitting device of FIG. 1. [Figure 9] 2 is a cross-sectional view showing a configuration example of a pixel of the light-emitting device of FIG. [Figure 10] 1A and 1B are diagrams illustrating an example of a display device using the light-emitting device of this embodiment. [Figure 11] FIG. 1 is a diagram showing an example of a photoelectric conversion device using the light emitting device of this embodiment. [Figure 12] 1A to 1C are diagrams illustrating examples of electronic devices using the light-emitting device of this embodiment. [Figure 13] 1A and 1B are diagrams illustrating an example of a display device using the light-emitting device of this embodiment. [Figure 14] 1 is a diagram showing an example of a lighting device using the light-emitting device of this embodiment. [Figure 15] 1A and 1B are diagrams showing an example of a moving object using the light emitting device of the present embodiment. [Figure 16] FIG. 1 is a diagram showing an example of a wearable device using the light-emitting device of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the scope of the invention claimed. Although multiple features are described in the embodiments, not all of these multiple features are necessarily essential to the invention, and multiple features may be combined arbitrarily. Furthermore, in the accompanying drawings, the same reference numerals are used to designate the same or similar components, and redundant explanations will be omitted.

[0010] A light emitting device according to an embodiment of the present disclosure will be described with reference to Figures 1 to 8(a) and 8(b). Figure 1 is a cross-sectional view showing an example of the configuration of a light emitting device 100 of this embodiment. Figure 2 is a diagram showing an example of the configuration of a drive circuit for a pixel PIX arranged in the light emitting device 100. Figure 3 is a plan view showing an example of the arrangement of the drive circuit of Figure 2. Figure 4 is a plan view showing an example of the configuration of the light emitting device 100.

[0011] The light emitting device 100 includes a substrate 115 having a display area 402 (also referred to as an effective pixel area) on a main surface 151 of which a plurality of pixels PIX are arranged. The substrate 115 may be made of a semiconductor such as silicon. A wiring structure 101 is arranged on the substrate 115 on which the transistor TR is provided. The wiring structure 101 includes an insulator made of silicon oxide or the like, wiring patterns arranged in the insulator, and plugs for connecting the wiring patterns. A lower electrode 110, an insulating layer 111, an organic layer 112 including a light emitting layer, and an upper electrode 113, which constitute an organic light emitting element, are arranged on the wiring structure 101. A protective layer 114 may be arranged on the organic light emitting element.

[0012] The transistor TR includes, for example, a gate electrode 102. FIG. 1 shows a two-layer wiring structure 101 including a wiring layer on which a wiring pattern 104 is arranged and a wiring layer on which a wiring pattern 106 is arranged. The wiring structure 101 is provided with a plug 103 connected to the gate electrode 102 and a substrate 115. The plug 103 connects the gate electrode 102 and the wiring pattern 104 and the substrate 115 and the wiring pattern 104. The wiring structure 101 is also provided with a plug 105 connecting the wiring pattern 104 and the wiring pattern 106, and a plug 107 connecting the wiring pattern 106 and the lower electrode 110. While the configuration shown in FIG. 1 shows a case where there are two wiring layers on which wiring patterns are arranged, the number of wiring layers may be one or three or more depending on the configuration of the light-emitting device 100.

[0013] FIG. 2 shows an example of the circuit configuration of a pixel PIX in this embodiment. The pixel PIX can include an organic light-emitting element 201, a driving transistor 202, and a writing transistor 203. The above-mentioned transistor TR corresponds to the driving transistor 202, the writing transistor 203, etc. The writing transistor 203 has a gate electrode 102 connected to a signal line SEL and one main terminal (the source in the configuration of FIG. 2) connected to a signal line DATA. The gate electrode 102 of the driving transistor 202 is connected to the other main terminal (the drain in the configuration of FIG. 2) of the writing transistor 203. One main terminal (the source in the configuration of FIG. 2) of the driving transistor 202 is connected to a power supply line VDD, and the other main terminal (the drain in the configuration of FIG. 2) of the driving transistor 202 is connected to one main terminal of the organic light-emitting element 201. The other main terminal of the organic light-emitting element 201 is connected to a power supply line VSS. When the write transistor 203 is turned on in response to a signal supplied to the signal line SEL, a predetermined potential is supplied as a luminance signal from the signal line DATA to the gate electrode 102 of the drive transistor 202. The drive transistor 202 supplies a current corresponding to the potential of the luminance signal to the organic light emitting element 201. This causes the organic light emitting element 201 to emit light at a luminance corresponding to the luminance signal (current driving).

[0014] FIG. 3 is a plan view showing an example of the arrangement of two pixels PIXa and PIXb in this embodiment. Actual pixels PIXa and PIXb include components not shown in FIG. 3, but FIG. 3 shows only the minimum components necessary for explanation. As shown in FIG. 2, pixels PIXa and PIXb include drive transistors 202a and 202b and write transistors 203a and 203b, respectively. The drive transistors 202a and 202b include source-drain regions 116a and 116c and gate electrodes 102a and 102c provided in the substrate 115. The write transistors 203a and 203b include source-drain regions 116b and 116d and gate electrodes 102b and 102d provided in the substrate 115.

[0015] The gate electrode 102a of the drive transistor 202a and the drain of the write transistor 203a are connected via plugs 103a and 103b, a wiring pattern 104a, and a plug 103c. The wiring pattern 104a constitutes a part of the wiring pattern 104 shown in FIG. 1. The wiring pattern 104a may be connected to a wiring pattern 106a that constitutes a part of the wiring pattern 106 shown in FIG. 1 via plugs 105a and 105b. As shown in FIG. 3, a plug 107a may be connected to the wiring pattern 106a. The wiring patterns 104a and 106a and the plugs 103a, 103b, 103c, 105a, 105b, and 107a are patterns connected to the gate electrode 102a of the drive transistor 202a. The wiring patterns 104a, 106a and the plugs 103a, 103b, 103c, 105a, 105b, and 107a can also be said to be patterns at the same potential as the gate electrode 102a of the drive transistor 202a, when wiring resistance and transient potential fluctuations are ignored. The wiring pattern 104b constitutes a part of the wiring pattern 104 shown in FIG. 1. The wiring pattern 104b is also a pattern connected to the source of the write transistor 203a via a plug 103d. The wiring pattern 104c constitutes a part of the wiring pattern 104 shown in FIG. 1. The wiring pattern 104c is also a pattern connected to the gate electrode 102b of the write transistor 203a via a plug 103e.

[0016] Similarly, the gate electrode 102c of the drive transistor 202b and the drain of the write transistor 203a are connected via plugs 103f and 103g, a wiring pattern 104d, and a plug 103h. The wiring pattern 104d constitutes a part of the wiring pattern 104 shown in FIG. 1. The wiring pattern 104d may also be connected to a wiring pattern 106b that constitutes a part of the wiring pattern 106 shown in FIG. 1 via plugs 105c and 105d. As shown in FIG. 3, a plug 107b may be connected to the wiring pattern 106b. The wiring patterns 104d and 106b and the plugs 103f, 103g, 103h, 105c, 105d, and 107b are patterns connected to the gate electrode 102c of the drive transistor 202b. The wiring patterns 104d and 106b and the plugs 103f, 103g, 103h, 105c, 105d, and 107b can also be said to be patterns at the same potential as the gate electrode 102a of the drive transistor 202a, when wiring resistance and transient potential fluctuations are ignored. The wiring pattern 104e constitutes a part of the wiring pattern 104 shown in FIG. 1. The wiring pattern 104e is also a pattern connected to the source of the write transistor 203b via the plug 103i. The wiring pattern 104f constitutes a part of the wiring pattern 104 shown in FIG. 1. The wiring pattern 104f is also a pattern connected to the gate electrode 102d of the write transistor 203b via the plug 103j.

[0017] In the present embodiment, when manufacturing the light-emitting device 100, in some configurations, the region to be exposed is divided into two or more regions and stitching exposure is performed. For example, in the exposure process for forming the wiring pattern 104 shown in FIG. 3, stitching exposure is performed along the boundary 300 between the pixel PIXa and the pixel PIXb. The wiring pattern 104 is a pattern disposed in the wiring layer closest to the gate electrode 102 among multiple wiring layers disposed in the display region 402. Meanwhile, the gate electrode 102, the plug 103, the plug 105, the wiring pattern 106, the plug 107, etc. may be formed by one-shot exposure. However, the pattern formed using stitching exposure is not limited to the wiring pattern 104. For example, the gate electrode 102 may be formed by stitching exposure. Furthermore, for example, the wiring pattern 106, which is a pattern disposed in the wiring layer second closest to the gate electrode 102 among multiple wiring layers disposed in the display region 402, may be formed by stitching exposure. Furthermore, for example, any of the gate electrode 102, the plug 103 connected to the substrate 115, the plug 105 connected to the wiring pattern 104, and the plug 107 connected to the wiring pattern 106 may be formed using connecting exposure.

[0018] For example, in a layer requiring fine pattern formation, a connecting exposure using ArF exposure may be used, and in a layer for forming a relatively large pattern, a flood exposure using KrF exposure or i-line exposure may be used. The wiring patterns and plugs formed using the connecting exposure may be referred to as conductive patterns 121 below. In the configuration shown in FIG. 3, the wiring patterns 104 (wiring patterns 104a to 104f) are conductive patterns 121 formed using the connecting exposure.

[0019] When stitching exposure is used, the line width of the wiring pattern 104, which is the conductive pattern 121 formed using stitching exposure, may differ for each divided exposed region. Furthermore, the overlap amount of the wiring pattern 104 with respect to patterns of other layers (e.g., layers formed using flood exposure), such as the gate electrode 102, plugs 103 and 105, and wiring pattern 106, may also vary. Specifically, the line width may differ across the boundary 300 between the wiring pattern 104a included in the conductive pattern 121a and the wiring pattern 104d included in the conductive pattern 121b. Similarly, the line width may differ between the wiring pattern 104c (conductive pattern 121a) and the wiring pattern 104f (conductive pattern 121b). This may result in different values ​​of parasitic capacitance between the wiring pattern 104a and the wiring pattern 104c and the parasitic capacitance between the wiring pattern 104d and the wiring pattern 104f. The wiring patterns 104c and 104f are the signal lines SEL shown in Fig. 2. That is, the parasitic capacitance between the gate electrode 102 of the driving transistor 202 and the signal lines SEL may vary across the boundary 300 of the connecting exposure.

[0020] The parasitic capacitance between the gate electrode 102 of the driving transistor 202 and the signal line SEL affects the voltage applied from the signal line DATA to the gate electrode 102 of the driving transistor 202 when the writing transistor 203 is conductive. If the value of the parasitic capacitance differs, the voltage applied to the gate electrode 102 of the driving transistor 202 will differ even when the same luminance signal is supplied, and the amount of current flowing through the organic light-emitting element 201 will change. In other words, the amount of current flowing through the organic light-emitting element 201 will vary for each exposure region when bridge exposure is performed, and there is a possibility that a difference will occur in the emission intensity of the organic light-emitting element 201 at the boundary 300 of the bridge exposure.

[0021] As shown in FIG. 4, a display region 402 including the above-described pixels PIX is arranged on the main surface 151 of the substrate 115. A dummy pixel region 400 including dummy pixels is arranged around the display region 402. The dummy pixels have the same configuration as the pixels PIX, but may not emit light. For example, the dummy pixels may not be provided with the plugs 107 that connect the wiring pattern 106 and the lower electrodes 110. A peripheral region 401 is arranged around the dummy pixel region 400. Circuits for operating the pixels PIX may be arranged in the peripheral region 401.

[0022] As described above, the main surface 151 of the substrate 115 includes a conductive pattern 121 (for example, the above-mentioned wiring pattern 104) formed by connecting exposure across the boundary 300. It can also be said that the main surface 151 of the substrate 115 includes, across the boundary 300, a region 411a including conductive patterns 121a (for example, wiring patterns 104a to 104c) formed using connecting exposure, and a region 411b including conductive patterns 121b (for example, wiring patterns 104d to 104f). In this case, as described above, for example, the line width of the conductive pattern 121a arranged in the region 411a and the conductive pattern 121b arranged in the region 411b may be different. Furthermore, the relative positions of the conductive pattern 121a arranged in the region 411a and the conductive pattern 121b arranged in the region 411b with respect to the layer formed using floodwise exposure may be different. Therefore, the region 411a and the region 411b are adjacent to each other across a boundary that involves a misalignment between the conductive pattern 121a and the conductive pattern 121b.

[0023] The display area 402 may have a substantially rectangular shape having sides 412a to 412d, as shown in FIG. 4 . The sides 412a to 412d may be virtual lines connecting the centers of the pixels PIX arranged at the vertices of the display area 402. Here, the center of the pixel PIX can be defined as the geometric center of gravity of the entire pixel configuration or a specific pixel configuration in orthogonal projection onto the main surface 151 of the substrate 115. For example, the center of the pixel PIX may be the geometric center of gravity of a light-emitting region of the pixel PIX in orthogonal projection onto the main surface 151 of the substrate 115. The center 410 of the display area is defined as the geometric center of gravity of the rectangle defined by the sides 412a to 412d in orthogonal projection onto the main surface 151 of the substrate 115. In this case, the boundary 300 used for stitching exposure is arranged so as not to pass through the center of the display area 402.

[0024] As described above, in the conductive pattern 121 formed using stitching exposure, pattern size and alignment deviations occur for each region 411. This may result in differences in the light emission intensity of the organic light-emitting element 201 across the stitching exposure boundary 300. This prevents the stitching exposure boundary 300 from being located in the center of the display region 402, which is the most visible area. As a result, even if the boundary 300 passes through the display region 402 and a difference in light emission intensity occurs between the region 411a and the region 411b across the boundary 300, the difference in light emission intensity can be prevented from being visible. As a result, in the light-emitting device 100 using the organic light-emitting element 201, degradation of image quality caused by stitching exposure is suppressed.

[0025] For example, as shown in FIG. 4 , boundary 300 may be disposed between center 410 of display area 402 and side 412a constituting the outer edge of display area 402. In this case, boundary 300 may extend parallel to the direction in which side 412a extends. In this case, boundary 300 can also be said to be disposed between center line 403, which passes through center 410 of display area 402 and is parallel to the direction in which side 412a extends, and side 412a constituting the outer edge of display area 402. In the configuration shown in FIG. 4 , in orthogonal projection onto main surface 151 of substrate 115, the rectangular shape of the outer edge of display area 402 has long and short sides, and an example is shown in which boundary 300 is disposed parallel to side 412a constituting the short side. However, this is not limited thereto, and boundary 300 may be disposed parallel to sides 412b and 412d constituting the long sides. The outer edge of the display area 402 may also be square.

[0026] Next, an example of placing the boundary 300 of the stitching exposure at a position that is less visible to the human eye will be described with reference to Figure 5. Unless otherwise specified in this specification, the relationship between each configuration in orthogonal projection onto the main surface 151 of the substrate 115 will be shown below.

[0027] As described above, the boundary 300 of the stitching exposure does not pass through the center of the display area 402. Furthermore, in the configuration shown in FIG. 5 , the boundary 300 is disposed between the center 410 of the display area 402 and a side 412a of the side 412 that constitutes the outer edge of the display area 402 in a direction intersecting the direction in which the boundary 300 extends. In this case, the length 502 between the boundary 300 and the center 410 of the display area 402 may be equal to or greater than the length 501 between the boundary 300 and the side 412a. As shown in FIG. 5 , the length between the parallel sides 412a and 412c that constitute the outer edge of the display area 402 is defined as a length 511. The length 511 is the length of the display area 402 in the direction intersecting the boundary 300. In this case, the boundary 300 is disposed within a range of ¼ of the length 511 from the side 412a. This moves the boundary 300 away from the center of the display area 402, reducing the visibility of the boundary 300.

[0028] Furthermore, for example, the outer edge of substrate 115 includes portion 500, and in a direction intersecting the direction in which boundary 300 extends, boundary 300 is disposed between portion 500 of substrate 115 and center 410 of display region 402. In this case, length 503 between boundary 300 and center 410 of display region 402 may be equal to or greater than length 504 between boundary 300 and portion 500 of substrate 115.

[0029] 5, it is assumed that the display area 402 is disposed between the side 412a and the center 410 of the display area 402, and furthermore, the viewing angle of the display area 402 in the light emitting device 100 is A degrees. The viewing angle of the display area 402 is a design value of the field of view when a user views the display area 402 through an eyepiece optical system (for example, an optical system disposed in the viewfinder 1101 shown in FIG. 11) disposed in the light emitting device 100. In this case, the boundary 300 of the stitching exposure may be disposed within a range of {(A / 2-30) / A}×100[%] with respect to the length 511 of the display area in the direction intersecting the boundary 300 from the side 412a. For example, the viewing angle may be set to approximately 105 degrees to 120 degrees. This is because the horizontal field of view that the human eye can clearly recognize is approximately ±30 degrees. Therefore, for example, boundary 300 may be arranged in a range of 30 degrees or more from the center of the field of view through the eyepiece optical system in a direction intersecting boundary 300. By shifting the position of boundary 300 of stitching exposure from the range of the field of view that is easily recognized by humans, the difference in luminescence intensity caused by stitching exposure becomes less noticeable to the human eye.

[0030] In the above description, an example has been given in which boundary 300 is disposed between side 412a, which is a short side among sides 412 constituting the outer edge of display area 402, and center 410 of display area 402. However, this is not limited to this, and the same applies to a case in which boundary 300 is disposed between sides 412b and 412d, which are long sides among sides 412 constituting the outer edge of display area 402, and center 410 of display area 402. Hereinafter, unless otherwise specified, the short sides (sides 412a and 412c) and the long sides (sides 412b and 412d) may be interchanged.

[0031] Generally, there is a technique called foveated rendering that reduces the load of rendering processing by lowering the resolution of the display area 402 in the peripheral visual field where a person is not gazing. When performing this foveated rendering, the present disclosure can achieve a greater effect by arranging a boundary 300 of the stitching exposure in the area with the lowered resolution.

[0032] 6 is a diagram showing a display area 402 when foveated rendering is performed. The display area 402 includes a display area 601 and a display area 602 in which the resolution of the image displayed is lower than that of the display area 601. The display area 601 is disposed in the center of the display area 402. In this case, the boundary 300 of the stitching exposure passes through the display area 602. Alternatively, the boundary 300 does not have to pass through the display area 601. This makes it difficult for the human eye to perceive the difference in luminescence intensity caused by the stitching exposure.

[0033] For example, assume that half of the central area of ​​display area 402 in the short side direction and half of the central area of ​​display area 402 in the long side direction are set as display area 601. In this case, boundary 300 is disposed within a distance of ¼ of length 511 from side 412a. This allows the effects of the present disclosure to be obtained. Here, display area 601 may be, for example, an area in which the pixels PIX are arranged at a higher density than display area 602. Furthermore, for example, display area 602 may be an area in which the resolution of the image displayed by signal processing is lower than that of display area 601.

[0034] Furthermore, the conductive pattern 121 formed using stitching exposure may also be disposed in the peripheral region 401. Therefore, as shown in FIG. 7 , a stitching exposure boundary 300 may be disposed in the peripheral region 401. That is, the boundary 300 does not need to pass through the display region 402. In this case, a difference in the emission intensity in the display region 402 caused by the boundary 300 being disposed in the display region 402 is unlikely to occur. As a result, it is possible to further suppress degradation in the quality of the displayed image caused by the stitching exposure boundary 300.

[0035] Next, an example in which the above-described light-emitting device 100 is applied to a wearable device such as a head-mounted display or smart glasses will be described. FIGS. 8(a) and 8(b) show a display device 800 that displays images of a wearable device. The display device 800 has multiple light-emitting devices, including a light-emitting device 100a arranged corresponding to the left eye and a light-emitting device 100b arranged corresponding to the right eye when worn by a user. In this case, as shown in FIG. 8(a), when worn by a user, the orientation of the boundary 300a of the light-emitting device 100a relative to the center 410a of the display area 402 of the light-emitting device 100a may be different from the orientation of the boundary 300b of the light-emitting device 100b relative to the center 410b of the display area 402 of the light-emitting device 100b. More specifically, the boundary 300a of the light-emitting device 100a may be disposed to the left of the center 410a of the display area 402 of the light-emitting device 100a, and the boundary 300b of the light-emitting device 100b may be disposed to the right of the center 410b of the display area 402 of the light-emitting device 100b. This results in the stitching exposure boundaries 300a and 300b of the light-emitting devices 100a and 100b, which are disposed corresponding to the left and right eyes, being positioned outside the field of view. This prevents the difference in light emission intensity caused by the stitching exposure boundary 300 from being visible. As a result, in a wearable device having a display device 800 including the light-emitting devices 100a and 100b, degradation of image quality caused by the stitching exposure of the light-emitting devices 100a and 100b is suppressed.

[0036] Furthermore, for example, as shown in FIG. 8(b), when a user wears the light-emitting devices 100a and 100b, the boundaries 300a and 300b of the light-emitting devices 100a and 100b may be located above the centers 410a and 410b of the display areas 402 of the light-emitting devices 100a and 100b, respectively. The vertical field of view that the human eye can clearly perceive is approximately 15 degrees upward and approximately 20 degrees downward. It is also known that when a person is relaxed, their gaze tends to be directed downward. Therefore, the stitching exposure boundary 300 is located above the centers 410a and 410b of the display areas 402 of the light-emitting devices 100. This can prevent the difference in light emission intensity caused by the stitching exposure boundary 300 from being visible.

[0037] Here, application examples in which the light emitting device 100 of this embodiment is applied to a display device, a photoelectric conversion device, an electronic device, a lighting device, a mobile object, and a wearable device will be described with reference to Figs. 9(a) and 9(b) to 16(a) and 16(b). The description will be given assuming that an organic light emitting element (OLED), such as an organic EL element using an organic light emitting material, is disposed in the pixel PIX of the light emitting device 100. First, details of each component disposed in the pixel PIX of the light emitting device 100 will be shown, and then application examples will be described.

[0038] An organic light-emitting device according to one embodiment of the present invention has a first electrode, a second electrode, and an organic compound layer disposed between these electrodes. One of the first electrode and the second electrode is an anode and the other is a cathode. In the organic light-emitting device of this embodiment, the organic compound layer may be a single layer or a laminate consisting of multiple layers, as long as it has an emitting layer. If the organic compound layer is a laminate consisting of multiple layers, the organic compound layer may include, in addition to the emitting layer, a hole injection layer, a hole transport layer, an electron blocking layer, a hole / exciton blocking layer, an electron transport layer, an electron injection layer, etc. The emitting layer may also be a single layer or a laminate consisting of multiple layers. If the emitting layer is a multi-layer, a charge generation layer may be disposed between the emitting layers. The charge generation layer may be composed of a compound having a lower LUMO than the hole transport layer, and the LUMO of the charge generation layer may be lower than the HOMO of the hole transport layer. Here, the molecular orbital energy of the organic compound layer may be the molecular orbital energy of the organic compound having the largest weight ratio in the organic compound layer.

[0039] Here, the closer the HOMO and LUMO are to the vacuum level, the higher they are described as being. The LUMO of the charge generation layer being lower than the HOMO of the hole transport layer means that the LUMO of the charge generation layer is closer to the vacuum level than the HOMO of the hole transport layer.

[0040] In this specification, the HOMO and LUMO can be calculated using molecular orbital calculations. The molecular orbital calculations are performed using density functional theory (DFT) or the like, with the functional being B3LYP and the basis set being 6-31G. *It is also the case that the range of graphical designs is Gaussian09(Gaussian09). ,RevisionC.01,MJFrisch,GWTrucks,HBSchlegel,GEScus area, MARobb, JRCheeseman, G. Scalmani, V. Barone, B. Mennucci, G. Petersson, H. Nakatsuji, M. Caricato, X. Li, HPHr atchian, AFIzmaylov, J. Bloino, G. Zheng, JLSonnenberg, M. Hada, M. Ehara, K. Toyota, R. Fukuda, J. Hasegawa, M. Ish ida,T.Nakajima,Y.Honda,O.Kitao,H.Nakai,T.Vreven,JAMontgomery,Jr.,JEPeralta,F.Ogliaro,M.Bearpark,JJH eyd, E. Brothers, KNKudin, VNStaroverov, T. Keith, R. Kobayashi, J. Normand, K. Raghavachari, A. Rendell, JCBuran t,SSIyengar,J.Tomasi,M.Cossi,N.Rega,JMMillam,M.Klene,JEKnox,JBCross,V.Bakken,C.Adamo,J.Jaramillo,R. Gomperts,REStratmann,O.Yazyev,AJAustin,R.Cammi,C.Pomelli,JWOchterski,RLMartin,K.Morokuma,VGZakrzews ki,GAVoth,P.Salvador,JJDannenberg,S.Dapprich,ADDaniels,O.Farkas,JBForesman,JVOrtiz,JCioslowski,and DJFox,Gaussian,Inc.,Wallingford CT,2010.)

[0041] The HOMO and LUMO in this specification can be calculated using the ionization potential and band gap. The HOMO can be estimated by measuring the ionization potential. The ionization potential can be measured by dissolving the compound to be measured in a solvent such as toluene and using a measuring device such as an AC-3. The band gap can be measured by dissolving the compound to be measured in a solvent such as toluene and irradiating it with excitation light. The band gap can be measured by measuring the absorption edge of the excitation light. Alternatively, the compound to be measured can be deposited on a substrate such as glass and irradiated with excitation light on the deposited film. The band gap can be measured by measuring the absorption edge of the absorption spectrum where the deposited film absorbs the excitation light.

[0042] The LUMO can be calculated using the band gap and ionization potential: subtracting the ionization potential from the band gap gives the LUMO.

[0043] The LUMO can also be estimated from the reduction potential. For example, the one-electron reduction potential can be estimated using CV (cyclic volmetry) measurements. CV measurements are performed, for example, in a 0.1 M tetrabutylammonium perchlorate solution in DMF, with an Ag / Ag reference electrode. + The LUMO can be estimated by adding -4.8 eV, the difference between the reduction potential of the compound and that of ferrocene, to the reduction potential of the compound obtained.

[0044] If necessary, conventionally known low-molecular-weight and high-molecular-weight hole-injecting or hole-transporting compounds, host compounds, light-emitting compounds, electron-injecting or electron-transporting compounds, etc. may be used together. Examples of these compounds are given below.

[0045] Suitable hole injection and transport materials are those with high hole mobility that facilitates hole injection from the anode and transports the injected holes to the light-emitting layer. Furthermore, materials with high glass transition temperatures are suitable to reduce film quality degradation, such as crystallization, in organic light-emitting devices. Examples of low-molecular-weight and high-molecular-weight materials with hole injection and transport properties include triarylamine derivatives, arylcarbazole derivatives, phenylenediamine derivatives, stilbene derivatives, phthalocyanine derivatives, porphyrin derivatives, poly(vinylcarbazole), poly(thiophene), and other conductive polymers. Furthermore, the above-mentioned hole injection and transport materials are also suitable for use in electron blocking layers. Specific examples of compounds that can be used as hole injection and transport materials are listed below, but are not limited to these.

[0046] [ka]

[0047] Among the hole transport materials listed above, HT16 to HT18 can reduce the driving voltage when used in a layer in contact with the anode. HT16 is widely used in organic light-emitting devices. HT2, HT3, HT4, HT5, HT6, HT10, and HT12 may be used in an organic compound layer adjacent to HT16. Furthermore, multiple materials may be used in one organic compound layer.

[0048] Examples of luminescent materials that are mainly involved in luminescence function include fused ring compounds (e.g., fluorene derivatives, naphthalene derivatives, pyrene derivatives, perylene derivatives, tetracene derivatives, anthracene derivatives, rubrene, etc.), quinacridone derivatives, coumarin derivatives, stilbene derivatives, organoaluminum complexes such as tris(8-quinolinolato)aluminum, iridium complexes, platinum complexes, rhenium complexes, copper complexes, europium complexes, ruthenium complexes, and polymer derivatives such as poly(phenylenevinylene) derivatives, poly(fluorene) derivatives, and poly(phenylene) derivatives.

[0049] Specific examples of compounds that can be used as light-emitting materials are shown below, but the present invention is not limited to these.

[0050] [ka]

[0051] [ka]

[0052] When the light-emitting material is a hydrocarbon compound, it is suitable because it can reduce the decrease in light-emitting efficiency due to exciplex formation and the decrease in color purity due to the change in the emission spectrum of the light-emitting material due to exciplex formation.

[0053] Hydrocarbon compounds are compounds composed only of carbon and hydrogen, and among the above-mentioned exemplary compounds, BD7, BD8, GD5 to GD9, and RD1 are mentioned.

[0054] When the light-emitting material is a fused polycyclic ring containing a five-membered ring, it is suitable because it has a high ionization potential, is resistant to oxidation, and forms a device with a long durability and life. Among the above-mentioned exemplary compounds, BD7, BD8, GD5 to GD9, and RD1 are examples.

[0055] Examples of the light-emitting layer host or light-emitting assist material contained in the light-emitting layer include aromatic hydrocarbon compounds or derivatives thereof, as well as carbazole derivatives, dibenzofuran derivatives, dibenzothiophene derivatives, organoaluminum complexes such as tris(8-quinolinolato)aluminum, and organic beryllium complexes.

[0056] Specific examples of compounds that can be used as the light-emitting layer host or light-emitting assist material contained in the light-emitting layer are shown below, but the present invention is not limited to these.

[0057] [ka]

[0058] The host material may be a hydrocarbon compound. A hydrocarbon compound is a compound composed only of carbon and hydrogen, and examples of the above-mentioned compounds include EM1 to EM12 and EM16 to EM27. From the viewpoint of stability, host materials that do not have a carbon-heteroatom bond in the single bond connecting the aryl group units in their structure, such as F3 in Compound 1, are more suitable.

[0059] The electron transporting material can be arbitrarily selected from those capable of transporting electrons injected from the cathode to the light-emitting layer, and is selected taking into consideration the balance with the hole mobility of the hole transporting material, etc. Examples of materials having electron transport properties include oxadiazole derivatives, oxazole derivatives, pyrazine derivatives, triazole derivatives, triazine derivatives, quinoline derivatives, quinoxaline derivatives, phenanthroline derivatives, organoaluminum complexes, and fused ring compounds (e.g., fluorene derivatives, naphthalene derivatives, chrysene derivatives, anthracene derivatives, etc.). Furthermore, the above electron transporting materials are also suitable for use in hole-blocking layers.

[0060] Specific examples of compounds that can be used as electron transporting materials are shown below, but the present invention is not limited to these.

[0061] [ka]

[0062] The electron injection material can be selected from those that allow easy electron injection from the cathode, taking into consideration the balance with hole injection properties. Organic compounds include n-type dopants and reducing dopants. Examples include compounds containing alkali metals such as lithium fluoride, lithium complexes such as lithium quinolinol, benzimidazolidene derivatives, imidazolidene derivatives, fulvalene derivatives, and acridine derivatives.

[0063] It can also be used in combination with the above electron transporting material.

[0064] Structure of organic light-emitting element The organic light-emitting element is provided by forming an insulating layer, a first electrode, an organic compound layer, and a second electrode on a substrate. A protective layer, a color filter, a microlens, etc. may be provided on the cathode. When a color filter is provided, a planarizing layer may be provided between the protective layer and the color filter. The planarizing layer may be made of an acrylic resin, etc. The same applies when a planarizing layer is provided between the color filter and the microlens.

[0065] substrate Examples of the substrate include quartz, glass, silicon wafer, resin, and metal. The substrate may also include switching elements such as transistors and wiring patterns, with an insulating layer provided thereon. The insulating layer may be made of any material as long as it allows contact holes to be formed so that wiring patterns can be formed between the first electrode and the substrate, and insulation from unconnected wiring patterns is ensured. For example, the insulating layer may be made of a resin such as polyimide, silicon oxide, silicon nitride, or the like.

[0066] electrode A pair of electrodes can be used as the electrodes. The pair of electrodes may be an anode and a cathode. When an electric field is applied in the direction in which the organic light-emitting element emits light, the electrode with a higher potential is the anode, and the other is the cathode. It can also be said that the electrode that supplies holes to the light-emitting layer is the anode, and the electrode that supplies electrons is the cathode.

[0067] The anode may be made of a material with a high work function. For example, simple metals such as gold, platinum, silver, copper, nickel, palladium, cobalt, selenium, vanadium, and tungsten, mixtures containing these metals, alloys of these metals, and metal oxides such as tin oxide, zinc oxide, indium oxide, indium tin oxide (ITO), and zinc indium oxide can be used. Conductive polymers such as polyaniline, polypyrrole, and polythiophene can also be used as the anode.

[0068] These electrode materials may be used alone or in combination of two or more. The anode may be composed of one layer or multiple layers.

[0069] When the electrode is used as a reflective electrode, for example, chromium, aluminum, silver, titanium, tungsten, molybdenum, or alloys thereof, or laminates thereof can be used. The above materials can also function as a reflective film without functioning as an electrode. Furthermore, when a transparent electrode is used as the electrode, a transparent conductive oxide layer such as indium tin oxide (ITO) or indium zinc oxide can be used, but is not limited to these. Photolithography technology can be used to form the electrode.

[0070] On the other hand, a material with a low work function may be selected as the cathode material. Examples include simple metals such as alkali metals (e.g., lithium), alkaline earth metals (e.g., calcium), aluminum, titanium, manganese, silver, lead, and chromium, as well as mixtures containing these metals. Alternatively, alloys combining these simple metals may be used. For example, magnesium-silver, aluminum-lithium, aluminum-magnesium, silver-copper, and zinc-silver may be used. Metal oxides such as indium tin oxide (ITO) may also be used. These electrode materials may be used alone or in combination. The cathode may have a single-layer or multi-layer structure. Silver may be used as the cathode, and a silver alloy may be used to reduce silver aggregation. The alloy ratio is not important as long as silver aggregation is reduced. For example, the silver:other metal ratio may be 1:1 or 3:1.

[0071] The cathode may be a top-emission element using an oxide conductive layer such as ITO, or a bottom-emission element using a reflective electrode such as aluminum (Al), and is not particularly limited. The method for forming the cathode is not particularly limited, but using a DC or AC sputtering method, for example, can provide good coverage of the formed film and reduce the resistance of the cathode.

[0072] Pixel isolation layer The pixel separation layer may be formed of silicon oxides such as silicon nitride (SiN), silicon oxynitride (SiON), or silicon oxide (SiO) formed using a chemical vapor deposition (CVD) method. To increase the in-plane resistance of the organic compound layer, the thickness of the organic compound layer, particularly the hole transport layer, may be thinned on the sidewalls of the pixel separation layer. Specifically, the thickness of the organic compound layer on the sidewalls can be thinned by increasing the taper angle of the sidewalls of the pixel separation layer or the thickness of the pixel separation layer, thereby increasing vignetting during deposition.

[0073] On the other hand, the sidewall taper angle and film thickness of the pixel separation layer can be adjusted to the extent that voids are not formed in the protective layer formed thereon. By preventing voids from being formed in the protective layer, the occurrence of defects in the protective layer can be reduced. Since the occurrence of defects in the protective layer is reduced, deterioration of reliability such as the occurrence of dark spots and poor conduction of the second electrode can be reduced.

[0074] According to this embodiment, charge leakage to adjacent pixels can be effectively suppressed even if the taper angle of the sidewall of the pixel separation layer is not steep. As a result of this study, it was found that charge leakage can be sufficiently reduced if the taper angle is between 60 degrees and 90 degrees. The thickness of the pixel separation layer may be between 10 nm and 150 nm. Similar effects can also be achieved even if the pixel separation layer is composed only of pixel electrodes without a pixel separation layer. However, in this case, short circuits in organic light-emitting elements can be reduced by making the thickness of the pixel electrode less than half that of the organic layer or by making the edge of the pixel electrode forward tapered at less than 60 degrees.

[0075] Furthermore, even when the first electrode is a cathode and the second electrode is an anode, a wide color gamut and low-voltage operation are possible by forming an electron transport material and a charge transport layer, and an emitting layer on the charge transport layer.

[0076] organic compound layer The organic compound layer may be formed as a single layer or as multiple layers. When multiple layers are present, they may be referred to as hole injection layer, hole transport layer, electron blocking layer, light-emitting layer, hole blocking layer, electron transport layer, electron injection layer, etc., depending on their functions. The organic compound layer is primarily composed of organic compounds but may also contain inorganic atoms or compounds. The organic compound layer may contain, for example, copper, lithium, magnesium, aluminum, iridium, platinum, molybdenum, zinc, etc. The organic compound layer may be disposed between the first electrode and the second electrode, or may be disposed in contact with the first electrode and the second electrode. When multiple light-emitting layers are present, a charge generation section may be disposed between the first and second light-emitting layers. The charge generation section may contain an organic compound having a lowest unoccupied molecular orbital energy (LUMO) of -5.0 eV or less. The same applies when a charge generation section is disposed between the second and third light-emitting layers.

[0077] protective layer A protective layer may be provided on the cathode. For example, by adhering glass with a moisture absorbent on the cathode, the penetration of moisture and other contaminants into the organic compound layer can be reduced, thereby reducing the occurrence of display defects. In another embodiment, a passivation layer such as silicon nitride may be provided on the cathode to reduce the penetration of moisture and other contaminants into the organic compound layer. For example, after forming the cathode, the cathode may be transferred to another chamber without breaking the vacuum, and a 2 μm-thick silicon nitride may be formed by CVD to serve as a protective layer. After forming the protective layer by CVD, a protective layer may be formed by atomic layer deposition (ALD). The material of the protective layer formed by ALD is not limited, and may be silicon nitride, silicon oxide, aluminum oxide, or the like. Silicon nitride may be further formed by CVD on the protective layer formed by ALD. The protective layer formed by ALD may have a thickness smaller than that of the protective layer formed by CVD. Specifically, the thickness of the protective layer formed by ALD may be 50% or less, or even 10% or less, of the protective layer formed by CVD.

[0078] Color filters A color filter may be provided on the protective layer. For example, a color filter taking into consideration the size of the organic light-emitting element may be provided on another substrate, and the substrate on which the color filter is formed may be bonded to the substrate on which the organic light-emitting element is provided. Alternatively, for example, a color filter may be patterned on the above-mentioned protective layer using photolithography technology. The color filter may be made of a polymer.

[0079] planarization layer A planarization layer may be disposed between the color filter and the protective layer. The planarization layer is provided for the purpose of reducing the unevenness of the layers below the planarization layer. It may also be called a material resin layer without limiting the purpose. The planarization layer may be composed of an organic compound, and may be a low molecular weight or a high molecular weight. In consideration of reducing the unevenness, a high molecular weight organic compound may be used for the planarization layer.

[0080] The planarization layers may be provided above and below the color filter. In this case, the constituent materials of the planarization layers may be the same or different. Specific examples of the material for the planarization layer include polyvinyl carbazole resin, polycarbonate resin, polyester resin, ABS resin, acrylic resin, polyimide resin, phenol resin, epoxy resin, silicone resin, and urea resin.

[0081] Microlenses The organic light-emitting device may have an optical component such as a microlens on its light-emitting side. The microlens may be made of acrylic resin, epoxy resin, or the like. The microlens may be intended to increase the amount of light extracted from the organic light-emitting device or to control the direction of the extracted light. The microlens may have a hemispherical shape. When the microlens has a hemispherical shape, among the tangents to the hemisphere, there is a tangent that is parallel to the insulating layer, and the point of contact between this tangent and the hemisphere is the vertex of the microlens. The vertex of the microlens can be determined in the same way in any cross-sectional view. In other words, among the tangents to the semicircle of the microlens in the cross-sectional view, there is a tangent that is parallel to the insulating layer, and the point of contact between this tangent and the semicircle is the vertex of the microlens.

[0082] It is also possible to define the midpoint of a microlens. In the cross section of the microlens, a line segment is imagined from the point where an arc shape ends to the point where another arc shape ends, and the midpoint of this line segment can be called the midpoint of the microlens. The cross section for determining the vertex and midpoint may be a cross section perpendicular to the insulating layer.

[0083] The microlens has a first surface having a convex portion and a second surface opposite the first surface. The second surface can be disposed closer to the functional layer (light-emitting layer) than the first surface. To achieve this configuration, it is necessary to form the microlens on the light-emitting device. If the functional layer is an organic layer, high-temperature processes can be avoided in the microlens manufacturing process. Furthermore, if the second surface is disposed closer to the functional layer than the first surface, the glass transition temperatures of the organic compounds constituting the organic layer may all be 100°C or higher, and are preferably, for example, 130°C or higher.

[0084] Counter substrate An opposing substrate may be disposed on the planarization layer. The opposing substrate is called an opposing substrate because it is provided at a position corresponding to the aforementioned substrate. The opposing substrate may be made of the same material as the aforementioned substrate. When the aforementioned substrate is defined as a first substrate, the opposing substrate may be a second substrate.

[0085] organic layer The organic compound layers (hole injection layer, hole transport layer, electron blocking layer, light-emitting layer, hole blocking layer, electron transport layer, electron injection layer, etc.) constituting the organic light-emitting element according to an embodiment of the present disclosure may be formed by the following method.

[0086] The organic compound layer constituting the organic light-emitting device according to the embodiment of the present disclosure can be formed by dry processes such as vacuum deposition, ionization deposition, sputtering, plasma, etc. Alternatively to the dry process, a wet process can be used in which the compound is dissolved in an appropriate solvent and a layer is formed by a known coating method (e.g., spin coating, dipping, casting, LB method, inkjet method, etc.).

[0087] Here, when a layer is formed by a vacuum deposition method or a solution coating method, crystallization is unlikely to occur and the layer has excellent stability over time. When a film is formed by a coating method, the film can be formed by combining it with an appropriate binder resin.

[0088] Examples of the binder resin include, but are not limited to, polyvinylcarbazole resin, polycarbonate resin, polyester resin, ABS resin, acrylic resin, polyimide resin, phenol resin, epoxy resin, silicone resin, and urea resin.

[0089] These binder resins may be used singly or in combination as homopolymers or copolymers, and may further contain known additives such as plasticizers, antioxidants, and ultraviolet absorbers, as needed.

[0090] Pixel circuit The light-emitting device may have a pixel circuit connected to the light-emitting element. The pixel circuit may be an active matrix type that controls the emission of the first light-emitting element and the second light-emitting element independently. The active matrix type circuit may be voltage-programmed or current-programmed. The drive circuit has a pixel circuit for each pixel. The pixel circuit may have a light-emitting element, a transistor that controls the emission brightness of the light-emitting element, a transistor that controls the emission timing, a capacitor that holds the gate voltage of the transistor that controls the emission brightness, and a transistor for connecting to GND without going through the light-emitting element.

[0091] The light-emitting device has a display region and a peripheral region arranged around the display region. The display region has pixel circuits, and the peripheral region has a display control circuit. The mobility of a transistor constituting the pixel circuit may be lower than the mobility of a transistor constituting the display control circuit.

[0092] The slope of the current-voltage characteristics of the transistors that make up the pixel circuit may be smaller than the slope of the current-voltage characteristics of the transistors that make up the display control circuit. The slope of the current-voltage characteristics can be measured using the so-called Vg-Ig characteristics.

[0093] The transistors that make up the pixel circuit are transistors connected to the light-emitting elements, such as the first light-emitting element.

[0094] pixel An organic light emitting device includes a plurality of pixels, each of which includes sub-pixels that emit different colors, for example, RGB colors.

[0095] A pixel has an area called a pixel aperture that emits light. The pixel aperture may be 15 μm or less, or 5 μm or more. More specifically, it may be 11 μm, 9.5 μm, 7.4 μm, 6.4 μm, etc.

[0096] The spacing between the subpixels may be 10 μm or less, and specifically may be 8 μm, 7.4 μm, or 6.4 μm.

[0097] The pixels may be arranged in a known manner in a plan view. For example, they may be in a stripe arrangement, a delta arrangement, a pentile arrangement, or a Bayer arrangement. The shape of the subpixels in a plan view may be any known shape. For example, they may be rectangular, quadrilaterals such as diamonds, or hexagons. Of course, a shape that is close to a rectangle, rather than an exact shape, is included in the rectangle. The shape of the subpixels and the pixel arrangement may be used in combination.

[0098] Uses of organic light-emitting devices according to embodiments of the present disclosure The organic light-emitting device according to the embodiment of the present disclosure can be used as a component of a display device or a lighting device, and can also be used as an exposure light source for an electrophotographic image forming device, a backlight for a liquid crystal display device, or a light-emitting device having a white light source and a color filter.

[0099] The display device may be an image information processing device that has an image input unit that inputs image information from an area CCD, linear CCD, memory card, etc., has an information processing unit that processes the input information, and displays the input image on the display unit.

[0100] The display unit of the imaging device or inkjet printer may have a touch panel function. The driving method of this touch panel function may be an infrared method, a capacitance method, a resistive film method, or an electromagnetic induction method, and is not particularly limited. The display device may also be used in the display unit of a multifunction printer.

[0101] Next, further explanation will be given with reference to the drawings. Fig. 9(a) shows an example of a pixel PIX arranged in the light-emitting device 100. The pixel has sub-pixels 810 (pixels PIX). The sub-pixels are divided into 810R, 810G, and 810B based on their light emission. The emitted colors may be distinguished by the wavelength of light emitted from the light-emitting layer, or the light emitted from the sub-pixels may be selectively transmitted or color-converted using a color filter or the like. Each sub-pixel has a reflective electrode 802 as a first electrode on an interlayer insulating layer 801, an insulating layer 803 covering the edge of the reflective electrode 802, an organic compound layer 804 covering the first electrode and the insulating layer, a transparent electrode 805 as a second electrode, a protective layer 806, and a color filter 807.

[0102] A transistor and a capacitor may be disposed below or inside the interlayer insulating layer 801. The transistor and the first electrode may be electrically connected via a contact hole (not shown) or the like.

[0103] The insulating layer 803 may also be called a bank or a pixel separation film. The insulating layer 803 covers the edges of the first electrodes and is disposed to surround the first electrodes. The portions of the first electrodes not covered by the insulating layer 803 come into contact with the organic compound layer 804 and become light-emitting regions.

[0104] The organic compound layer 804 includes a hole injection layer 841 , a hole transport layer 842 , a first light-emitting layer 843 , a second light-emitting layer 844 , and an electron transport layer 845 .

[0105] The second electrode may be a transparent electrode, a reflective electrode, or a semi-transparent electrode.

[0106] The protective layer 806 reduces the penetration of moisture into the organic compound layer. Although the protective layer is illustrated as a single layer, it may be a multi-layer structure. Each layer may be an inorganic compound layer and an organic compound layer.

[0107] The color filters 807 are divided into 807R, 807G, and 807B depending on their colors. The color filters may be formed on a planarization film (not shown). A resin protective layer (not shown) may be disposed on the color filters. The color filters may be formed on a protective layer 806. The color filters may be provided on an opposing substrate such as a glass substrate and then bonded thereto.

[0108] A display device 800 in FIG. 9(b) (corresponding to the light-emitting device 100 described above) includes an organic light-emitting element 826 and a TFT 818 as an example of a transistor. A substrate 811 made of glass, silicon, or the like is provided with an insulating layer 812 thereon. An active element such as the TFT 818 is disposed on the insulating layer, and a gate electrode 813, a gate insulating film 814, and a semiconductor layer 815 of the active element are disposed on the insulating layer. The TFT 818 also includes the semiconductor layer 815, a drain electrode 816, and a source electrode 817. An insulating film 819 is provided on the top of the TFT 818. An anode 821 constituting the organic light-emitting element 826 and the source electrode 817 are connected via a contact hole 820 provided in the insulating film.

[0109] The electrical connection between the electrodes (anode, cathode) included in the organic light-emitting element 826 and the electrodes (source electrode, drain electrode) included in the TFT is not limited to the embodiment shown in Figure 9(b). In other words, it is sufficient that either the anode or the cathode is electrically connected to either the TFT source electrode or the drain electrode. TFT stands for thin film transistor.

[0110] 9(b), the organic compound layer 822 is illustrated as a single layer, but may be a multi-layer organic compound layer 822. A first protective layer 824 and a second protective layer 825 are provided on the cathode 823 to reduce deterioration of the organic light-emitting element.

[0111] In the display device 800 of FIG. 9(b), transistors are used as switching elements, but other switching elements may be used instead.

[0112] Furthermore, the transistors used in the display device 800 of Figure 9(b) are not limited to transistors using single-crystal silicon wafers, but may also be thin-film transistors having an active layer on the insulating surface of a substrate. Examples of active layers include non-single-crystal silicon such as single-crystal silicon, amorphous silicon, and microcrystalline silicon, and non-single-crystal oxide semiconductors such as indium zinc oxide and indium gallium zinc oxide. Thin-film transistors are also called TFT elements.

[0113] The transistors included in the display device 800 of Figure 9(b) may be formed within a substrate such as a silicon substrate. Here, "formed within a substrate" means that the substrate itself, such as a silicon substrate, is processed to form the transistors. In other words, having a transistor within a substrate can be seen as the substrate and the transistor being formed integrally.

[0114] The organic light-emitting element according to this embodiment has its light emission brightness controlled by a TFT, which is an example of a switching element. By providing multiple organic light-emitting elements on a surface, an image can be displayed based on the respective light emission brightnesses. Here, the switching element according to this embodiment is not limited to a TFT, but may also be a transistor formed from low-temperature polysilicon or an active matrix driver formed on a substrate such as a silicon substrate. "On the substrate" can also be referred to as "inside the substrate." Whether to provide a transistor in the substrate or to use a TFT is determined by the size of the display unit. For example, if the size is about 0.5 inches, the organic light-emitting element may be provided on a silicon substrate.

[0115] FIG. 10 is a schematic diagram illustrating an example of a display device using the light-emitting device 100 of this 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 an upper cover 1001 and a lower cover 1009. The touch panel 1003 and the display panel 1005 are connected to flexible printed circuits FPCs 1002 and 1004. Active elements such as transistors are disposed on the circuit board 1007. The battery 1008 may not be disposed if the display device 1000 is not a portable device, and even if it is a portable device, it does not need to be disposed in this position. The light-emitting device 100 can be applied to the display panel 1005. Pixels PIX disposed in the light-emitting device 100 functioning as the display panel 1005 are connected to active elements such as transistors disposed on the circuit board 1007 and operate.

[0116] The display device 1000 shown in FIG. 10 may be used as a display unit of a photoelectric conversion device (which may also be called an imaging device) that has an optical unit with multiple lenses and an imaging element that receives light that has passed through the optical unit and photoelectrically converts it into an electrical signal. The photoelectric conversion device may have a display unit that displays information acquired by the imaging element. The display unit may be a display unit exposed to the outside of the photoelectric conversion device or a display unit located within a viewfinder. The photoelectric conversion device may be a digital camera or a digital video camera.

[0117] FIG. 11 is a schematic diagram illustrating an example of a photoelectric conversion device using the light-emitting device 100 of this embodiment. The photoelectric conversion device 1100 may include a viewfinder 1101, a rear display 1102, an operation unit 1103, and a housing 1104. The photoelectric conversion device 1100 may also be called an imaging device. The light-emitting device 100 of this embodiment can be applied to the viewfinder 1101 or the rear display 1102, which are display units. In this case, the light-emitting device 100 may display not only an image to be captured, but also environmental information, imaging 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 that the subject will be blocked by an obstruction, and the like.

[0118] Since the timing suitable for capturing an image is often very short, it is better to display information as soon as possible. Therefore, a light emitting device 100 in which pixels PIX including light emitting elements using an organic light emitting material such as an organic EL element are arranged may be used in a viewfinder 1101 or a rear display 1102. This is because organic light emitting materials have a fast response speed. A light emitting device 100 using an organic light emitting material is more suitable than a liquid crystal display device for these devices, which require a high display speed.

[0119] The photoelectric conversion device 1100 has an optical section (not shown). The optical section has multiple lenses, which form an image on a photoelectric conversion element (not shown) housed in a housing 1104 that receives light that has passed through the optical section. The focus of the multiple lenses can be adjusted by adjusting their relative positions. This operation can also be performed automatically.

[0120] The light emitting device 100 may be applied to a display unit of an electronic device. In this case, the light emitting device 100 may have both a display function and an operation function. Examples of the portable terminal include a mobile phone such as a smartphone, a tablet, and a head-mounted display.

[0121] FIG. 12 is a schematic diagram showing an example of an electronic device using the light-emitting device 100 of this embodiment. The electronic device 1200 has a display unit 1201, an operation unit 1202, and a housing 1203. The housing 1203 may have a circuit, a printed circuit board having the circuit, a battery, and a communication unit. The operation unit 1202 may be a button or a touch panel type reaction unit. The operation unit 1202 may be a biometric recognition unit that recognizes a fingerprint to perform unlocking or the like. A portable device having a communication unit can also be called a communication device. The light-emitting device 100 of this embodiment can be applied to the display unit 1201.

[0122] 13(a) and 13(b) are schematic diagrams illustrating an example of a display device using the light-emitting device 100 of this embodiment. FIG. 13(a) illustrates a display device such as a television monitor or a PC monitor. The display device 1300 has a frame 1301 and a display unit 1302. The light-emitting device 100 of this embodiment can be applied to the display unit 1302. The display device 1300 may have a base 1303 that supports the frame 1301 and the display unit 1302. The base 1303 is not limited to the form shown in FIG. 13(a). For example, the bottom edge of the frame 1301 may also serve as the base 1303. The frame 1301 and the display unit 1302 may be curved. The radius of curvature may be 5000 mm or more and 6000 mm or less.

[0123] FIG. 13(b) is a schematic diagram illustrating another example of a display device using the light-emitting device 100 of this embodiment. The display device 1310 of FIG. 13(b) is configured to be bendable and is a so-called foldable display device. The display device 1310 has a first display unit 1311, a second display unit 1312, a housing 1313, and a bending point 1314. The light-emitting device 100 of this embodiment can be applied to the first display unit 1311 and the second display unit 1312. The first display unit 1311 and the second display unit 1312 may be a single display unit without any joints. The first display unit 1311 and the second display unit 1312 can be separated by the bending point. The first display unit 1311 and the second display unit 1312 may display different images, or the first display unit and the second display unit 1312 may display a single image.

[0124] FIG. 14 is a schematic diagram illustrating an example of a lighting device using the light-emitting device 100 of this embodiment. The lighting device 1400 may include a housing 1401, a light source 1402, a circuit board 1403, an optical film 1404, and a light diffusion unit 1405. The light-emitting device 100 of this embodiment can be applied to the light source 1402. The optical film 1404 may be a filter that improves the color rendering of the light source. The light diffusion unit 1405 can effectively diffuse light from the light source, such as for lighting, and deliver the light over a wide area. If necessary, a cover may be provided on the outermost part. The lighting device 1400 may include both the optical film 1404 and the light diffusion unit 1405, or only one of them.

[0125] The lighting device 1400 is, for example, a device that illuminates a room. The lighting device 1400 may emit white, daylight white, or any other color from blue to red. It may have a dimming circuit that adjusts the light intensity. The lighting device 1400 may have a power supply circuit connected to the light emitting device 100 that functions as the light source 1402. The power supply circuit is a circuit that converts AC voltage into DC voltage. White has a color temperature of 4200K, and daylight white has a color temperature of 5000K. The lighting device 1400 may also have a color filter. The lighting device 1400 may also have a heat sink. The heat sink dissipates heat from within the device to the outside, and examples of the heat sink include metal with a high specific heat, liquid silicon, etc.

[0126] FIG. 15 is a schematic diagram of an automobile having a tail lamp, which is an example of a vehicle lamp using the light emitting device 100 of this embodiment. The automobile 1500 may have a tail lamp 1501 that is turned on when the brakes are applied, for example. The light emitting device 100 of this embodiment may be used as a headlamp as a vehicle lamp. An automobile is an example of a mobile body, and the mobile body may be a ship, a drone, an aircraft, a railroad vehicle, an industrial robot, or the like. The mobile body may have a body and a lamp provided thereon. The lamp may indicate the current location of the body.

[0127] The light emitting device 100 of this embodiment can be applied to a tail lamp 1501. The tail lamp 1501 may have a protective member that protects the light emitting device 100 functioning as the tail lamp 1501. The protective member may be made of any material as long as it has a certain degree of strength and is transparent, but may be made of polycarbonate or the like. The protective member may also be made by mixing a furandicarboxylic acid derivative, an acrylonitrile derivative, or the like with polycarbonate.

[0128] The automobile 1500 may have a body 1503 and a window 1502 attached thereto. The window may be a window for checking the front and rear of the automobile, or may be a transparent display such as a head-up display. The light-emitting device 100 of this embodiment may be used in the transparent display. In this case, the constituent materials of the electrodes and the like of the light-emitting device 100 are made of transparent materials.

[0129] 16(a) and 16(b), a further application example of the light emitting device 100 of this embodiment will be described. The light emitting device 100 can be applied to systems that can be worn as a wearable device, such as smart glasses, a head-mounted display (HMD), or smart contact lenses. An image capturing and displaying device used in such an application example has an image capturing device capable of photoelectrically converting visible light and a light emitting device capable of emitting visible light.

[0130] 16(a) illustrates glasses 1600 (smart glasses) according to one application example. An imaging device 1602 such as a CMOS sensor or a SPAD is provided on the front side of a lens 1601 of the glasses 1600. In addition, the light emitting device 100 of this embodiment is provided on the back side of the lens 1601.

[0131] The glasses 1600 further include a control device 1603. The control device 1603 functions as a power source that supplies power to the image capture device 1602 and the light emitting device 100 according to each embodiment. The control device 1603 also controls the operations of the image capture device 1602 and the light emitting device 100. The lens 1601 is formed with an optical system for focusing light onto the image capture device 1602.

[0132] FIG. 16(b) illustrates glasses 1610 (smart glasses) according to one application example. The glasses 1610 include a control device 1612, which is equipped with an imaging device corresponding to the imaging device 1602 and a light-emitting device 100. A lens 1611 includes an optical system for projecting light emitted from the imaging device in the control device 1612 and the light-emitting device 100, and an image is projected onto the lens 1611. The control device 1612 functions as a power source for supplying power to the imaging device and the light-emitting device 100 and controls the operation of the imaging device and the light-emitting device 100. The control device 1612 may also include a gaze detection unit that detects the gaze of the wearer. Infrared light may be used for gaze detection. The infrared light-emitting unit emits infrared light toward the eyeball of a user gazing at a displayed image. An imaging unit having a light-receiving element detects the emitted infrared light reflected from the eyeball, thereby obtaining an image of the eyeball. By providing a reduction means for reducing the amount of light from the infrared light emitting section to the display section in a plan view, degradation of image quality is reduced.

[0133] The gaze of the user relative to the displayed image is detected from an image of the eyeball obtained by capturing infrared light. Any known method can be used for gaze detection using the image of the eyeball. As an example, a gaze detection method based on the Purkinje image formed by reflection of irradiated light on the cornea can be used.

[0134] More specifically, gaze detection processing is performed based on the pupil-corneal reflex method, which calculates a gaze vector representing the direction (rotation angle) of the eyeball based on the pupil image and Purkinje image included in the captured image of the eyeball, thereby detecting the user's gaze.

[0135] The light emitting device 100 according to the embodiment of the present disclosure may include an imaging device having a light receiving element, and may control the display image based on user line of sight information from the imaging device.

[0136] Specifically, the light emitting device 100 determines a first field of view area where the user gazes and a second field of view area other than the first field of view area based on the line-of-sight information. The first field of view area and the second field of view area may be determined by a control device of the light emitting device 100, or may be determined by an external control device and received. In the display area of ​​the light emitting device 100, the display resolution of the first field of view area may be controlled to be higher than the display resolution of the second field of view area. In other words, the resolution of the second field of view area may be lower than that of the first field of view area.

[0137] The display area includes a first display area and a second display area different from the first display area, and a high-priority area is determined from the first display area and the second display area based on line-of-sight information. The first display area and the second display area may be determined by a control device of the light-emitting device 100, or may be determined by an external control device and received. The resolution of the high-priority area may be controlled to be higher than the resolution of areas other than the high-priority area. In other words, the resolution of an area with a relatively low priority may be lowered.

[0138] Note that AI may be used to determine the first field of view area and areas with high priority. The AI ​​may be a model configured to estimate the angle of gaze and the distance to an object in the line of sight from the image of the eyeball, using as training data an image of the eyeball and the actual direction in which the eyeball in the image was looking. The AI ​​program may be included in the light-emitting device 100, the imaging device, or an external device. If included in an external device, it is transmitted to the light-emitting device 100 via communication.

[0139] When display control is performed based on visual recognition detection, the smart glasses can be applied to smart glasses that further include an imaging device for capturing images of the outside world. The smart glasses can display captured outside information in real time.

[0140] The disclosure of this specification includes the following light-emitting devices, wearable devices, display devices, photoelectric conversion devices, electronic devices, lighting devices, and mobile objects.

[0141] (Item 1) A light-emitting device including a substrate having a display area on a main surface in which a plurality of pixels are arranged, the main surface includes a first region including a first conductive pattern and a second region including a second conductive pattern and adjacent to the first region; Each of the plurality of pixels includes an organic light emitting element and a drive transistor that supplies a current to the organic light emitting element according to a luminance signal, the first conductive pattern and the second conductive pattern each include a conductive pattern connected to a gate electrode of the driving transistor of any of the plurality of pixels; the first region and the second region are adjacent to each other via a boundary where the first conductive pattern and the second conductive pattern are misaligned, A light-emitting device, wherein the boundary does not pass through the center of the display area.

[0142] (Item 2) The light-emitting device described in item 1, characterized in that the first conductive pattern and the second conductive pattern include patterns arranged in a wiring layer closest to the gate electrode among multiple wiring layers arranged in the display area.

[0143] (Item 3) The light-emitting device described in item 1 or 2, characterized in that the first conductive pattern and the second conductive pattern include patterns arranged in a wiring layer that is second closest to the gate electrode among multiple wiring layers arranged in the display area.

[0144] (Item 4) The light-emitting device described in any one of items 1 to 3, characterized in that the first conductive pattern and the second conductive pattern include one or more of a plug connected to the gate electrode, a plug connected to a pattern arranged in a wiring layer closest to the gate electrode among multiple wiring layers arranged in the display area, and a plug connected to a pattern arranged in a wiring layer second closest to the gate electrode among the multiple wiring layers.

[0145] (Item 5) Each of the plurality of pixels further includes a write transistor that writes the luminance signal to the gate electrode, 5. A light-emitting device according to any one of items 1 to 4, characterized in that the first conductive pattern and the second conductive pattern each include a conductive pattern connected to a gate electrode of the writing transistor of any of the plurality of pixels.

[0146] (Item 6) 6. The light emitting device according to any one of items 1 to 5, wherein the boundary passes through the display area.

[0147] (Item 7) 6. The light emitting device according to any one of items 1 to 5, wherein the boundary does not pass through the display area.

[0148] (Item 8) In the orthogonal projection onto the principal surface, an outer edge of the substrate including a first portion; the boundary is disposed between the first portion and the center in a direction intersecting a direction in which the boundary extends, 8. The light emitting device according to any one of items 1 to 7, wherein the length between the boundary and the center is equal to or greater than the length between the boundary and the first portion.

[0149] (Item 9) In the orthogonal projection onto the principal surface, The display area has a rectangular shape, the boundary is disposed between a first side of the sides constituting the outer edge of the display area and the center in a direction intersecting a direction in which the boundary extends, and 9. The light emitting device according to any one of items 1 to 8, wherein the length between the boundary and the center is equal to or greater than the length between the boundary and the first side.

[0150] (Item 10) further including an eyepiece optical system; In the orthogonal projection onto the principal surface, The display area has a rectangular shape, the boundary is disposed between a first side of the sides constituting the outer edge of the display area and the center in a direction intersecting a direction in which the boundary extends, and The light emitting device described in any one of items 1 to 9, characterized in that when the field of view through the eyepiece optical system is A degrees, the boundary is arranged in a range of {(A / 2-30) / A}×100[%] from the first side to the length of the display area in the intersecting direction.

[0151] (Item 11) further including an eyepiece optical system; In the orthogonal projection onto the principal surface, The display area has a rectangular shape, the boundary is disposed between a first side of the sides constituting the outer edge of the display area and the center in a direction intersecting a direction in which the boundary extends, and 11. The light emitting device according to claim 1, wherein the boundary is disposed within a range of 30 degrees or more in the intersecting direction from the center of the field of view through the eyepiece optical system.

[0152] (Item 12) The rectangular shape has long and short sides, 12. The light emitting device according to any one of items 9 to 11, wherein the first side constitutes the long side.

[0153] (Item 13) The rectangular shape has long and short sides, 12. The light emitting device according to any one of items 9 to 11, wherein the first side constitutes the short side.

[0154] (Item 14) 12. The light emitting device according to any one of items 9 to 11, wherein the boundary extends parallel to the direction in which the first side extends.

[0155] (Item 15) the display area includes a first display area and a second display area in which an image is displayed at a lower resolution than the first display area; 15. The light emitting device according to any one of items 1 to 14, wherein the boundary passes through the second display area.

[0156] (Item 16) Item 16. The light emitting device according to item 15, wherein the boundary does not pass through the first display area.

[0157] (Item 17) Item 17. The light emitting device according to item 15 or 16, wherein the first display region has a higher pixel density than the second display region.

[0158] (Item 18) 1. A wearable device having a display device for displaying an image, A wearable device characterized in that the display device has the light-emitting device described in any one of items 1 to 17.

[0159] (Item 19) The wearable device described in item 18 is characterized in that the display device has a plurality of light-emitting devices, including a first light-emitting device arranged corresponding to the left eye and a second light-emitting device arranged corresponding to the right eye when worn by a user.

[0160] (Item 20) The wearable device described in item 19 is characterized in that, when worn by the user, the direction in which the boundary of the first light-emitting device is arranged relative to the center of the display area of ​​the first light-emitting device and the direction in which the boundary of the second light-emitting device is arranged relative to the center of the display area of ​​the second light-emitting device are different from each other.

[0161] (Item 21) The wearable device described in item 19, characterized in that when worn by the user, the boundary of the first light-emitting device is located to the left of the center of the display area of ​​the first light-emitting device, and the boundary of the second light-emitting device is located to the right of the center of the display area of ​​the second light-emitting device.

[0162] (Item 22) The wearable device described in item 19, characterized in that when worn by the user, the boundaries of the first light-emitting device and the second light-emitting device are positioned above the centers of the display areas of the first light-emitting device and the second light-emitting device.

[0163] (Item 23) 18. A display device comprising: the light-emitting device according to any one of items 1 to 17; and an active element connected to the light-emitting device.

[0164] (Item 24) an optical unit having a plurality of lenses, an image sensor that receives light that has passed through the optical unit, and a display unit that displays an image; 18. A photoelectric conversion device, wherein the display unit displays an image captured by the imaging element, and the photoelectric conversion device comprises the light-emitting device according to any one of items 1 to 17.

[0165] (Item 25) A display unit is provided in the housing, and a communication unit is provided in the housing and communicates with an external device. 18. An electronic device, wherein the display unit comprises the light-emitting device according to any one of items 1 to 17.

[0166] (Item 26) A lighting device having a light source and at least one of a light diffusion unit and an optical film, 18. A lighting device, wherein the light source comprises the light emitting device according to any one of items 1 to 17.

[0167] (Item 27) A moving body having a body and a lighting fixture provided on the body, The lighting fixture is a moving body having the light emitting device according to any one of items 1 to 17.

[0168] The invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention. Accordingly, the following claims are appended to apprise the public of the scope of the invention. [Explanation of symbols]

[0169] 100: light emitting device, 102: gate electrode, 115: pixel, 121: conductive pattern, 151: main surface, 201: organic light emitting element, 202: driving transistor, 300: boundary, 402: display area, 410: center, 411: area, PIX: pixel

Claims

1. A light-emitting device including a substrate having a display area on a main surface in which a plurality of pixels are arranged, the main surface includes a first region including a first conductive pattern and a second region including a second conductive pattern and adjacent to the first region; Each of the plurality of pixels includes an organic light emitting element and a drive transistor that supplies a current to the organic light emitting element according to a luminance signal, the first conductive pattern and the second conductive pattern each include a conductive pattern connected to a gate electrode of the driving transistor of any of the plurality of pixels; the first region and the second region are adjacent to each other via a boundary where the first conductive pattern and the second conductive pattern are misaligned, A light-emitting device, wherein the boundary does not pass through the center of the display area.

2. 2. The light-emitting device according to claim 1, wherein the first conductive pattern and the second conductive pattern include patterns arranged in a wiring layer closest to the gate electrode among a plurality of wiring layers arranged in the display region.

3. 2. The light-emitting device according to claim 1, wherein the first conductive pattern and the second conductive pattern include patterns arranged in a wiring layer that is second closest to the gate electrode among a plurality of wiring layers arranged in the display area.

4. 2. The light-emitting device according to claim 1, wherein the first conductive pattern and the second conductive pattern include one or more of a plug connected to the gate electrode, a plug connected to a pattern arranged in a wiring layer among a plurality of wiring layers arranged in the display area that is closest to the gate electrode, and a plug connected to a pattern arranged in a wiring layer among the plurality of wiring layers that is second closest to the gate electrode.

5. Each of the plurality of pixels further includes a write transistor that writes the luminance signal to the gate electrode, 2 . The light emitting device according to claim 1 , wherein the first conductive pattern and the second conductive pattern each include a conductive pattern connected to a gate electrode of the write transistor of any of the plurality of pixels.

6. The light emitting device according to claim 1 , wherein the boundary passes through the display area.

7. The light emitting device according to claim 1 , wherein the boundary does not pass through the display area.

8. In the orthogonal projection onto the principal surface, an outer edge of the substrate including a first portion; the boundary is disposed between the first portion and the center in a direction intersecting a direction in which the boundary extends, The light emitting device according to claim 1 , wherein the length between the boundary and the center is equal to or greater than the length between the boundary and the first portion.

9. In the orthogonal projection onto the principal surface, The display area has a rectangular shape, the boundary is disposed between a first side of the sides constituting the outer edge of the display area and the center in a direction intersecting a direction in which the boundary extends, The light emitting device according to claim 1 , wherein the length between the boundary and the center is equal to or greater than the length between the boundary and the first side.

10. further including an eyepiece optical system; In the orthogonal projection onto the principal surface, The display area has a rectangular shape, the boundary is disposed between a first side of the sides constituting the outer edge of the display area and the center in a direction intersecting a direction in which the boundary extends, The light-emitting device of claim 1, characterized in that, when the field of view through the eyepiece optical system is A degrees, the boundary is arranged in a range of {(A / 2-30) / A} x 100 [%] from the first side to the length of the display area in the intersecting direction.

11. further including an eyepiece optical system; In the orthogonal projection onto the principal surface, The display area has a rectangular shape, the boundary is disposed between a first side of the sides constituting the outer edge of the display area and the center in a direction intersecting a direction in which the boundary extends, 2. The light emitting device according to claim 1, wherein the boundary is disposed within a range of 30 degrees or more in the intersecting direction from the center of the field of view through the eyepiece optical system.

12. The rectangular shape has long and short sides, The light emitting device according to claim 9 , wherein the first side constitutes the long side.

13. The rectangular shape has long and short sides, The light emitting device according to claim 9 , wherein the first side constitutes the short side.

14. The light emitting device according to claim 9 , wherein the boundary extends parallel to a direction in which the first side extends.

15. the display area includes a first display area and a second display area in which an image is displayed at a lower resolution than the first display area; The light emitting device according to claim 1 , wherein the boundary passes through the second display area.

16. The light emitting device according to claim 15 , wherein the boundary does not pass through the first display area.

17. 16. The light emitting device according to claim 15, wherein the first display region has a higher pixel density than the second display region.

18. 1. A wearable device having a display device for displaying an image, A wearable device, wherein the display device comprises the light-emitting device according to claim 1 .

19. The wearable device of claim 18, characterized in that the display device has a plurality of light-emitting devices, including a first light-emitting device arranged corresponding to the left eye and a second light-emitting device arranged corresponding to the right eye when worn by a user.

20. The wearable device of claim 19, characterized in that when worn by the user, the direction in which the boundary of the first light-emitting device is aligned relative to the center of the display area of ​​the first light-emitting device and the direction in which the boundary of the second light-emitting device is aligned relative to the center of the display area of ​​the second light-emitting device are different from each other.

21. The wearable device of claim 19, characterized in that when worn by the user, the boundary of the first light-emitting device is located to the left of the center of the display area of ​​the first light-emitting device, and the boundary of the second light-emitting device is located to the right of the center of the display area of ​​the second light-emitting device.

22. The wearable device of claim 19, characterized in that when worn by the user, the boundaries of the first light-emitting device and the second light-emitting device are positioned above the centers of the display areas of the first light-emitting device and the second light-emitting device.

23. A display device comprising: a light-emitting device according to claim 1; and an active element connected to the light-emitting device.

24. an optical unit having a plurality of lenses, an image sensor that receives light that has passed through the optical unit, and a display unit that displays an image; A photoelectric conversion device, wherein the display section displays an image captured by the imaging element, and the photoelectric conversion device comprises the light-emitting device according to claim 1 .

25. A display unit is provided in the housing, and a communication unit is provided in the housing and communicates with an external device.

18. An electronic device, wherein the display unit comprises the light-emitting device according to claim 1.

26. A lighting device having a light source and at least one of a light diffusion unit and an optical film, 18. An illumination device, characterized in that the light source comprises a light emitting device according to any one of claims 1 to 17.

27. A moving body having a body and a lighting fixture provided on the body, 18. A moving body, wherein the lighting fixture comprises the light emitting device according to claim 1.

Images