Light shielding device

Abstract

To provide a light shielding device having a display device. To provide a method for developing a shading device having a display device.SOLUTION: A light shielding device used for a vehicle, the light shielding device including a light shielding unit, a storage unit, and a driving unit, the light shielding unit including a display unit on an inner surface of the vehicle, the storage unit being located on a roof portion of the vehicle, the driving unit having a first function of deploying the light shielding unit to a first position, a second function of deploying the light shielding unit to a second position, and a third function of storing the light shielding unit in a third position inside the storage unit, the first position being a position where the light shielding unit does not obstruct a front visual field of a driver, the second position is a position at which the light shielding unit covers 80% or more of an area of the front window of the vehicle.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] One aspect of the present invention relates to a moving body. One aspect of the present invention relates to a vehicle. One aspect of the present invention relates to a shading device for a moving body such as a vehicle. Another aspect of the present invention relates to a control method for a shading device for a moving body such as a vehicle. Another aspect of the present invention relates to a display device included in a shading device for a moving body such as a vehicle. Another aspect of the present invention relates to an illumination device included in a shading device for a moving body such as a vehicle. Another aspect of the present invention relates to a power generation device included in a shading device for a moving body such as a vehicle.

[0002] Note that one embodiment of the present invention is not limited to the above-mentioned technical field. The technical field of one embodiment of the invention disclosed in this specification relates to an object, a method, or a manufacturing method. Alternatively, one embodiment of the present invention relates to a process, a machine, a manufacture, or a composition of matter. Therefore, more specific examples of the technical field of one embodiment of the present invention disclosed in this specification include vehicles, semiconductor devices, display devices, light-emitting devices, lighting devices, power storage devices, memory devices, driving methods thereof, and manufacturing methods thereof.

[0003] Although a vehicle is mentioned above as an example of a moving body, the moving body is not limited to a vehicle. For example, a moving body may be a train, a monorail, a ship, or an aircraft (helicopter, airplane, rocket). Furthermore, a vehicle may be a car, a bus, a truck, or the like. [Background technology]

[0004] Various types of sunshades have been proposed to prevent the temperature inside parked vehicles from rising, mainly during the day when the sun is strong. In addition, with the diversification of travel and camping styles, sleeping in a car has become an increasingly common form of lodging, and measures to prevent people from peeking inside the car while sleeping in the car are needed.

[0005] Detachable sunshades that are fixed with suction cups or the like are sometimes used to cover vehicle windows. However, this configuration is cumbersome to install and requires a place to store the sunshade after removal. For this reason, it has been proposed to equip vehicles with a sunshade device that can be deployed and stored (Patent Document 1).

[0006] Furthermore, advances in information networks and communication technologies have led to an increase in the amount of video information (television broadcasts, video distribution services, etc.) available in vehicles. Furthermore, advances in vehicle driving automation technology (JASO TP18004 (2018)) have led to the practical application of Level 3 (conditional driving automation) driving automation systems, and it is possible that Level 4 (highly automated driving) and Level 5 (fully automated driving) driving automation systems will be put to practical use in the future. Such autonomously driving vehicles are required to be equipped with display devices that allow users to enjoy video information in the vehicle, perform teleworking in the vehicle, and so on. Since a larger screen is desirable for a vehicle display device, it has been proposed to equip the vehicle with a large, deployable and storable display device (Patent Document 2). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-67688 [Patent Document 2] International Publication No. 2016 / 020808 Summary of the Invention [Problem to be solved by the invention]

[0008] Patent Document 1 shows an example in which a storage section for a shading device is provided on the roof of a vehicle. However, the shading device disclosed in Patent Document 1 only functions as a shading device and does not have a display means for an image or the like.

[0009] Furthermore, the shading device disclosed in Patent Document 1 is intended for use on the rear window, and is difficult to use in vehicles equipped with a room mirror (also called an inside mirror) on the front window. It is possible to configure separate shading devices for the driver's seat and passenger's seat. However, separate shading devices for the driver's seat and passenger's seat create gaps, making it difficult to adequately shade the front window. Furthermore, heated air between the front window and the shading device diffuses into the vehicle interior through the gaps in the shading device, making it easy for the temperature inside the vehicle to rise.

[0010] Furthermore, when a display device is installed on the surface of the shading device facing the interior of the vehicle (also called the in-vehicle surface), or when the in-vehicle surface of the shading device is used as the projection surface of a projector device, if the shading device is structured so that it is separated into the driver's seat side and the passenger seat side, the display quality will be reduced.

[0011] Furthermore, the display device disclosed in Patent Document 2 can provide a large-screen display device in a vehicle, but does not disclose its function as a shading device to be installed in a vehicle.

[0012] In view of the above, an object of one embodiment of the present invention is to provide a shading device having a display device. Another object is to provide a method for deploying a shading device having a display device. Another object is to provide a shading device having a display device that can reduce the space between the front window and the shading device when used on a front window of a vehicle. Another object is to provide a display device that can be included in the shading device. Another object is to provide a display method for a display device that can be included in the shading device.

[0013] Another object of one embodiment of the present invention is to provide a shading device that can be deployed and retracted by a driving means such as electric power.Another object of one embodiment of the present invention is to provide a shading device to be used on a front window of a vehicle.Another object of the present invention is to provide a shading device that is not separated into a driver's seat side and a passenger seat side, as a shading device to be used on a front window of a vehicle.Another object of the present invention is to provide a shading device that can reduce the space between the front window and the shading device, as a shading device to be used on a front window of a vehicle.

[0014] Note that the description of these problems does not preclude the existence of other problems. One embodiment of the present invention does not necessarily solve all of these problems. Furthermore, problems other than those described above will become apparent from the description of the specification, etc., and problems other than those described above can be extracted from the description of the specification, etc. [Means for solving the problem]

[0015] One aspect of the present invention is a shading device for use in a vehicle, the shading device having a shading section, a storage section, and a drive means, the shading section having a display section on the inside surface of the vehicle, the storage section being located on the roof of the vehicle, the drive means having a first function of deploying the shading section to a first position, a second function of deploying the shading section to a second position, and a third function of storing the shading section in a third position inside the storage section, the first position being a position where the shading section does not obstruct the driver's forward visibility, and the second position being a position where the shading section covers 80% or more of the area of ​​the vehicle's front windshield.

[0016] In the above-described shading device, it is preferable that the shading portion has a reflective layer on the outer surface of the vehicle, the reflective layer having an aluminum layer and a silicon nitride layer on the aluminum layer, and the reflectivity of the reflective layer is 80% or more.

[0017] In any one of the above shading devices, the shading portion preferably has a solar cell on the outer surface of the vehicle, and the solar cell preferably has a silicon solar cell, a CIGS solar cell, or a perovskite solar cell.

[0018] In any one of the above-described shading devices, the display unit is electrically connected to the image output unit, the image output unit has an image processing unit that corrects the image to be output to the display unit, and it is preferable that the image processing unit has the function of stretching the image vertically and correcting it into a trapezoidal shape with a wider left and right width at the bottom.

[0019] In any one of the above-described shading devices, the shading part has a spring part connected to the display part and a support part connected to the spring part, the support part is connected to a movable part of the drive means inside the pillar of the vehicle, the movable part is connected to a first winding part and a second winding part, and in the first function, the second function, and the third function, either one or both of the first winding part and the second winding part perform a rotational movement.

[0020] In any one of the above light blocking devices, it is preferable that the storage section has a transmission section, and when the light blocking section is in the third position, the transmission section and the display section overlap.

[0021] Another aspect of the present invention is a shading device for use in a vehicle, the shading device having a shading portion, a storage portion, and a drive means, the storage portion being located on the roof portion of the vehicle, the shading portion having a first portion with an opening, a second portion connected to the first portion, and a third portion connected to the second portion, the size of the opening being larger than the size of a rearview mirror of the vehicle, the drive means having a first mechanism that deploys the shading portion downward from the roof portion in a first state in which the first portion, the second portion, and the third portion overlap, a second mechanism that tilts the shading portion in the first state so that it is approximately parallel to the front windshield of the vehicle without contacting the rearview mirror, and a third mechanism that deploys the second portion and the third portion so that they are approximately parallel to the front windshield when the shading portion is tilted. [Effects of the Invention]

[0022] According to one aspect of the present invention, a shading device having a display device for use in a moving body such as a vehicle can be provided. Also, a moving body such as a vehicle equipped with a shading device having a display device can be provided. Also, a method for deploying a shading device having a display device can be provided. Also, a shading device that can be deployed and stored by a driving means such as electric power can be provided. Also, a display device that can be included in the shading device can be provided. Also, a display method for a display device that can be included in the shading device can be provided.

[0023] According to another aspect of the present invention, a shading device for use on a vehicle's front windshield can be provided. Furthermore, a shading device that is not separated into a driver's seat side and a passenger seat side can be provided as a shading device for use on a vehicle's front windshield. Furthermore, a shading device that can reduce the space between the front windshield and the shading device can be provided as a shading device for use on a vehicle's front windshield. Furthermore, a configuration in which the above shading device is equipped with a display device can be provided.

[0024] According to another aspect of the present invention, a shading device for use in a vehicle equipped with a rearview mirror on the front windshield can be provided. Furthermore, as a shading device for use in a vehicle equipped with a rearview mirror on the front windshield, a shading device that is not separated into a driver's seat side and a passenger seat side can be provided. Furthermore, as a shading device for use in a vehicle equipped with a rearview mirror on the front windshield, a shading device that can reduce the space between the front windshield and the shading device can be provided. Furthermore, a configuration in which the above shading device is equipped with a display device can be provided.

[0025] Note that the description of these effects does not preclude the existence of other effects. Note that one embodiment of the present invention does not necessarily have all of these effects. Note that effects other than these will become apparent from the description in the specification, drawings, claims, etc., and it is possible to extract other effects from the description in the specification, drawings, claims, etc. [Brief explanation of the drawings]

[0026] [Figure 1] 1A and 1B are diagrams illustrating an example of the configuration of a light blocking device according to an embodiment. [Figure 2] 2A to 2D are diagrams illustrating an example of the configuration of a light blocking device according to an embodiment. [Figure 3] 3A and 3B are diagrams illustrating an example of the configuration of a light blocking device according to an embodiment. [Figure 4] 4A to 4C are diagrams illustrating an example of the configuration of a light blocking device according to an embodiment. [Figure 5] 5A to 5C are diagrams illustrating an example of the configuration of a light blocking device according to an embodiment. [Figure 6] 6A and 6B are diagrams illustrating an example of the configuration of a light blocking device according to an embodiment. [Figure 7] 7A to 7E are diagrams illustrating image correction according to the embodiment. [Figure 8] 8A and 8B are diagrams illustrating a configuration example of a light blocking device according to an embodiment. [Figure 9] 9A1 to 9D2 are diagrams illustrating a configuration example of a light blocking device according to an embodiment. [Figure 10] 10A1 to 10D2 are diagrams illustrating an example of the configuration of a light blocking device according to an embodiment. [Figure 11] 11A to 11C are diagrams illustrating an example of the configuration of a light blocking device according to an embodiment. [Figure 12] 12A to 12C are diagrams showing configuration examples of a display device. [Figure 13]13A to 13F are diagrams showing examples of pixel configurations. [Figure 14] FIG. 14 is a diagram illustrating an example of the configuration of a display device. [Figure 15] 15A and 15B are diagrams showing configuration examples of a display device. [Figure 16] 16A to 16F are diagrams showing configuration examples of a light-emitting device. [Figure 17] 17A and 17B are diagrams showing configuration examples of a light receiving device, and Fig. 17C to Fig. 17E are diagrams showing configuration examples of a display device. [Figure 18] 18A and 18B are top views showing configuration examples of a display panel. [Figure 19] 19A to 19C are top views showing configuration examples of a display panel. [Figure 20] 20A and 20B are cross-sectional views showing examples of the configuration of a display panel. [Figure 21] 21A to 21C are diagrams illustrating a display panel and a display device according to the first embodiment. [Figure 22] 22A and 22B are diagrams illustrating the display device of the first embodiment. [Figure 23] FIG. 23 is a photograph showing the appearance of the display device of Example 1. As shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0027] The embodiments will be described in detail with reference to the drawings. However, the present invention is not limited to the following description, and it will be readily understood by those skilled in the art that various changes can be made in form and detail without departing from the spirit and scope of the present invention. Therefore, the present invention should not be interpreted as being limited to the description of the embodiments shown below.

[0028] In the configuration of the invention described below, the same parts or parts having similar functions are denoted by the same reference numerals in different drawings, and repeated explanations thereof will be omitted. In addition, when referring to similar functions, the same hatch pattern may be used and no particular reference numeral may be assigned.

[0029] In the drawings described in this specification, the size of each component, the thickness of a layer, or an area may be exaggerated for clarity, and therefore, the drawings are not necessarily limited to the scale.

[0030] In this specification, ordinal numbers such as "first" and "second" are used to avoid confusion of components and do not limit the number.

[0031] It should be noted that the terms "film" and "layer" may be interchangeable. For example, the term "conductive layer" may be changed to the term "conductive film." Or, for example, the term "insulating film" may be changed to the term "insulating layer."

[0032] (Embodiment 1) In this embodiment, a configuration example of a light-blocking device of one embodiment of the present invention will be described with reference to drawings.

[0033] [Light blocking device configuration example 1] 1A and 1B show an example of a shading device according to one embodiment of the present invention. As an example of a vehicle equipped with a shading device according to one embodiment of the present invention, a bird's-eye view of the exterior of vehicle 60A is shown in FIG. 1A, and a perspective view of vehicle 60A from the inside is shown in FIG. 1B. Here, an example is shown in which shading device 50 having shading part 51 deployed near front windshield 61 inside vehicle 60A is installed on roof part 59 (also referred to as roof portion) of vehicle 60A.

[0034] As shown in Fig. 1A, the shading device 50 has a shading section 51 and a storage section 52. The storage section 52 has the function of storing and unfolding the shading section 51. Furthermore, as shown in Fig. 1B, it is preferable that the shading section 51 has a display section 53 on the surface facing the interior of the vehicle. It is also preferable that the shading section 51 and the display section 53 are flexible.

[0035] It is preferable that the light-shielding portion 51 has a flexible substrate (also referred to as a sheet, film, or screen). Furthermore, when the light-shielding portion 51 has a display portion 53, the display portion 53 may be used as the substrate of the light-shielding portion 51. Note that, as the flexible substrate, for example, flexible materials such as polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyacrylonitrile resin, acrylic resin, polyimide resin, polymethyl methacrylate resin, polycarbonate (PC) resin, polyethersulfone (PES) resin, polyamide resins (nylon, aramid, etc.), polysiloxane resin, cycloolefin resin, polystyrene resin, polyamideimide resin, polyurethane resin, polyvinyl chloride resin, polyvinylidene chloride resin, polypropylene resin, polytetrafluoroethylene (PTFE) resin, ABS resin, cellulose nanofiber, etc. can be used.

[0036] The light-shielding portion 51 preferably has a function of blocking light from outside the vehicle on its surface on the vehicle exterior side (also referred to as the surface on the vehicle exterior side), and more preferably has a function of reflecting light from outside the vehicle. When the light-shielding portion 51 has a function of blocking light from outside the vehicle, the transmittance of the light-shielding portion 51 with respect to visible light is preferably 20% or less, more preferably 10% or less, more preferably 5% or less, and even more preferably 0%.

[0037] Furthermore, when the light-shielding portion 51 has a function of reflecting light from outside the vehicle, the light-shielding portion 51 may have a reflective layer using a metal layer such as aluminum, titanium, silver, an aluminum-titanium alloy, an aluminum-neodymium alloy, or a silver-neodymium alloy. Methods that can be used to form the metal layer include evaporation, sputtering, CVD (Chemical Vapor Deposition), PLD (Pulsed Laser Deposition), ALD (Atomic Layer Deposition), MCVD (Metal CVD), and MOCVD (Metal Organic CVD). The metal layer may be formed directly on the substrate of the light-shielding portion 51, or may be formed on a separate substrate and then attached to the light-shielding portion 51.

[0038] The reflective layer may also have a transparent inorganic layer, such as silicon oxide, silicon nitride, silicon oxynitride, or silicon nitride oxide, on a metal layer, such as aluminum. The reflective layer preferably has an inorganic layer on a metal layer, since the inorganic layer prevents the surface of the metal layer from deteriorating (e.g., oxidizing), thereby suppressing a decrease in the reflectivity of the reflective layer. Methods for forming the inorganic layer include vapor-phase methods such as vapor deposition, sputtering, CVD, PLD, and ALD, as well as liquid-phase methods such as the sol-gel method. A reflective layer having an inorganic layer on a metal layer may have, for example, a structure in which a silicon nitride layer is provided on an aluminum layer. The reflectivity of the reflective layer for visible light is preferably 50% or more, more preferably 80% or more, even more preferably 90% or more, and even more preferably 95% or more.

[0039] The shading portion 51 may also have a power generation device. Examples of the power generation device include a photoelectric conversion device such as a solar cell, or a temperature difference power generation device. The photoelectric conversion device such as a solar cell is preferably provided on the surface of the shading portion 51 facing the exterior of the vehicle. Since the shading portion 51 is preferably flexible, the power generation device of the shading portion 51 is also preferably flexible. For example, a thin-film solar cell may be used as a flexible solar cell. A silicon solar cell using silicon such as amorphous silicon, polysilicon, or single-crystalline silicon is preferably used as a thin-film solar cell. A CIGS solar cell using a semiconductor material CIGS made of copper (Cu), indium (In), gallium (Ga), and selenium (Se) is preferably used. A perovskite solar cell using a material having a perovskite structure (e.g., NH3CH3PbI3) is preferably used.

[0040] 2A to 2D are diagrams illustrating the deployment and storage of the shading device 50. FIG. 2A is a cross-sectional view showing a state in which the shading unit 51 is stored in the storage unit 52 in the shading device 50 of the vehicle 60A. FIGS. 2B and 2C are cross-sectional views showing a state in which the shading unit 51 is deployed close to the front windshield 61 in the shading device 50 of the vehicle 60A. As shown in FIG. 2A, storing the shading unit 51 in the storage unit 52 in the roof portion 59 of the vehicle 60A is preferable because it makes effective use of the internal space of the roof portion 59, which would have been little used in the past.

[0041] As shown in FIGS. 2B and 2C, the sunshade device 50 can have multiple deployment positions for the lower end of the sunshade portion 51. For example, when the lower end of the sunshade portion 51 is deployed to a first deployment position P1 as shown in FIG. 2B, the sunshade portion 51 can be used as a sun visor by the driver while driving. FIG. 2D is a schematic diagram of the sunshade portion 51 deployed to the first deployment position P1 as shown in FIG. 2B, as viewed from inside the vehicle 60A. In the first deployment position P1, the sunshade portion 51 does not obstruct the driver's forward visibility, allowing the driver to drive in this state. For example, the first deployment position P1 that does not obstruct the driver's forward visibility is preferably set so that the lower end of the sunshade portion 51 is positioned within 50% or less, 30% or less, or 20% or less of the vertical length of the windshield 61 from the driver's perspective. As shown in FIG. 2D, when the shading part 51 has the display part 53 on the inside of the vehicle, when the shading part 51 is deployed to the first deployment position P1, the display part 53 can display images captured by a camera installed outside the vehicle body, as well as various driving support information such as map information, traffic information, vehicle position information, route to the destination, distance, direction of travel, estimated arrival time, time, speed, direction, temperature, humidity, air pressure, tilt angle, and altitude.

[0042] 2C , when deployed to the second deployment position P2, the shading part 51 is positioned so as to overlap the windshield 61 from the top to the bottom. Therefore, examples of when the shading part 51 is deployed to the second deployment position P2 include when the vehicle is stopped, parked, reversing, and traveling using a driving automation system of level 4 (highly automated driving) or level 5 (fully automated driving). Note that when the shading part 51 is deployed to the second deployment position P2, it is preferable that it covers 80% or more of the area of ​​the windshield 61, more preferably 90% or more, more preferably 95% or more, and even more preferably 100%.

[0043] 2C, when display unit 53 is provided on the vehicle interior side of light-shielding unit 51, display unit 53 can display images captured by a camera installed outside the vehicle body, as well as various driving support information such as map information, traffic information, vehicle position information, route to destination, distance, direction of travel, estimated arrival time, time, speed, direction, temperature, humidity, air pressure, tilt angle, altitude, etc. Furthermore, display unit 53 can display television broadcasts, images recorded on various media, images transmitted from information terminals such as notebook PCs, tablet devices, mobile phones, smartphones, portable game consoles, etc.

[0044] 3A and 3B show an example of a block diagram of a vehicle 60 incorporating a shading device 50 having a display unit 53. The vehicle 60 includes, for example, the shading device 50, an image output unit 67, an operation unit 66, and the like.

[0045] 3A, the shading device 50 includes a shading unit 51, a driving means 54, etc. The shading unit 51 includes a display unit 53, and the display unit 53 includes a display panel 55. The display panel 55 is preferably flexible. When the display panel 55 is flexible, it can be transformed into a state in which the display surface is flat or curved, and a state in which the display panel 55 is rolled up and stored, or a state in which it is folded and stored. The display device described in the second embodiment is preferably used as the display panel 55.

[0046] Furthermore, the driving means 54 of the shading device 50 can deploy and retract the shading part 51 having the display part 53. The driving means 54 can be operated by an operating part 66, for example.

[0047] <How to deploy and store the shading device 1> An example of a method for deploying and storing the shading device 50 and an example of the driving means 54 will be described with reference to FIGS. 4A to 6B.

[0048] FIG. 4A is a schematic diagram of region 81 indicated by the dashed-dotted line in FIG. 2D. The light-shielding unit 51 includes a display unit 53, a spring unit 57, and a support unit 58. The support unit 58 is connected to a movable unit 71 of a driving means 54 (described later) within an opening 65 of a pillar 70. The pillar 70 refers to the vehicle portion indicated by the two-dot chain line in FIGS. 2D and 4A. The movable unit 71 has the function of deploying the light-shielding unit 51 in the direction of the solid arrow and retracting the light-shielding unit 51 in the direction of the dashed arrow. The support unit 58 is connected to the display unit 53 via the spring unit 57. The connection between the support unit 58 and the display unit 53 via the spring unit 57 prevents the display unit 53 from bending when the light-shielding unit 51 is deployed. Although the case where spring portion 57 is used has been described here, the present invention is not limited to a spring, and any other suitable structure can be used as long as it can apply a certain amount of force (tension) outward to prevent display unit 53 from bending. For example, an elastic body such as rubber may also be used.

[0049] 4B and 4C are cross-sectional schematic diagrams of roof portion 59 and pillar 70 shown in FIG. 4A. Driving means 54 will be described using FIGS. 4B and 4C. In FIG. 4B, driving means 54 has a movable portion 71 and a plurality of guide portions 72. Furthermore, movable portion 71 is connected to support portion 58 in fixed region 73A, movable portion 71 is connected to a part of display unit 53 in fixed region 73B, and movable portion 71 is connected to image output unit 67 in fixed region 73B. One or more of guide portions 72 are connected to a motor.

[0050] In FIG. 4B , the light-shielding unit 51 includes a display unit 53, a reflective layer 56, a spring unit 57, and a support unit 58, and has a region connected to the image output unit 67. The support unit 58, which is connected to the display unit 53 via the spring unit 57, is connected to the movable unit 71 at a fixed region 73A. The display unit 53 is connected to the movable unit 71 at a fixed region 73B opposite the side connected to the spring unit 57. The movable unit 71 contacts a plurality of guide units 72, at least one of which is connected to a motor. The movable unit 71 can move in the direction of the solid arrow in the figure when the light-shielding unit 51 is deployed, and in the direction of the dashed arrow in the figure when the light-shielding unit 51 is retracted, due to the rotation of the motor. At this time, by having the fixed region 73A and the fixed region 73B as described above, a certain force (tension) is applied to the display unit 53 even when the movable unit 71 moves, thereby preventing the display unit 53 from bending.

[0051] 4C is an example of a driving means different from that shown in FIG. 4B. In FIG. 4C, the driving means 54 has a movable portion 71, a plurality of guide portions 72, and a winding portion 74 (74A, 74B). In addition, the movable portion 71 is connected to the support portion 58 in the fixed region 73A, the movable portion 71 is connected to a part of the display unit 53 in the fixed region 73B, and the movable portion 71 is connected to the image output unit 67 in the fixed region 73B. One or more of the winding portions 74 (74A, 74B) are connected to a motor.

[0052] 4C , the light-shielding unit 51 includes a display unit 53, a reflective layer 56, a spring unit 57, and a support unit 58, and has a region connected to the image output unit 67. The support unit 58, which is connected to the display unit 53 via the spring unit 57, is connected to the movable unit 71 at a fixed region 73A. The display unit 53 is connected to the movable unit 71 at a fixed region 73B opposite the side connected to the spring unit 57. The movable unit 71 is connected to a winding unit 74A and a winding unit 74B, and at least one of the winding units 74A and 74B is connected to a motor. The movable unit 71 contacts a plurality of guide units 72, and by the rotation of the motor, the movable unit 71 can move in the direction of the solid arrow in the figure when the light-shielding unit 51 is deployed, and in the direction of the dashed arrow in the figure when the light-shielding unit 51 is retracted. In this case, by having the fixed areas 73A and 73B as described above, even when the movable part 71 moves, a certain force (tension) is applied to the display part 53, thereby preventing the display part 53 from bending.

[0053] 4B and 4C is preferably provided inside the pillar 70, but may be provided outside the pillar 70. Although not shown, the driving means 54 is preferably provided on both the left pillar 70 and the right pillar 70 of the vehicle 60. Furthermore, the spring portion 57 is not limited to being provided at one location, and it is preferable that the display portion 53 and the support portion 58 are connected at two or more locations.

[0054] 4A to 4C show an example in which the support portion 58 is connected to the display portion 53 via the spring portion 57, but a structure without the spring portion 57 may also be used, as in an example shown in FIGS. 5A to 5C.

[0055] 6A and 6B show modified examples of region 75 in Figures 4C and 5C. Figures 6A and 6B show an example in which shading device 50 has a rotation mechanism 77 corresponding to winding unit 74B in Figures 4C and 5C, a shaft 76, and an image output unit 67 inside shaft 76.

[0056] The thickness of the light-shielding portion 51 can be, for example, 10 μm to 5 mm, preferably 20 μm to 4 mm, more preferably 50 μm to 3 mm, and typically 100 μm to 2 mm. The thinner the light-shielding portion 51, the more compact the size of the light-shielding device 50 can be when the light-shielding portion 51 is rolled up. However, if the thickness is too thin, the light-shielding portion 51 may be susceptible to wind and other influences, and the mechanical strength of the light-shielding portion 51 may be reduced. Furthermore, by having a moderate thickness, for example, of approximately 0.5 mm to 5 mm, problems such as rippling of the display surface when the light-shielding portion 51 is unfolded can be suppressed. Furthermore, a stretchable material may be used for the light-shielding portion 51.

[0057] The shaft 76 has a function of fixing one end of the light-shielding part 51. Inside the shaft 76, an image output part 67 having a ribbon cable, an FPC (Flexible Printed Circuit), etc. electrically connected to the display part 53 is disposed. Here, it is preferable that a connector and wiring electrically connected to the image output part 67 are provided inside the shaft 76. Furthermore, it is preferable that the shaft 76 is provided with a circuit that supplies signals and voltages to the light-shielding part 51. In addition, the shaft 76 may be configured to have one or more of an antenna, a wireless receiver, a wireless transmitter, a power supply line, a battery, a printed circuit board on which ICs such as a computing unit and a memory unit are mounted, an external connection port, etc.

[0058] Here, the smaller the diameter of the shaft portion 76, the smaller the size of the light shielding device 50 can be when the light shielding portion 51 is wound up. The diameter of the shaft portion 76 may be determined depending on the allowable curvature when the light shielding portion 51 is bent. For example, the diameter of the shaft portion 76 can be set to 0.1 mm or more and 50 mm or less, preferably 0.5 mm or more and 30 mm or less, more preferably 1 mm or more and 20 mm or less, and more preferably 2 mm or more and 10 mm or less. By setting the diameter of the shaft portion 76 to 0.1 mm or more, it is possible to prevent the shaft portion 76 from bending due to the weight of the light shielding portion 51. Furthermore, by setting the diameter of the shaft portion 76 to 50 mm or less, it is possible to make the size of the winding portion 74B sufficiently compact.

[0059] The rotation mechanism 77 has a function of rotating the shaft portion 76. The bearing portion 78 has a function of supporting the shaft portion 76. The rotation mechanism 77 may be configured to rotate the shaft portion 76 by combining the power of a motor or the like with gears or the like, for example.

[0060] <Display section of the light blocking device> The display unit 53 of the shading device 50 shown in FIG. 1B etc. has a display panel 55 as shown in FIG. 3A, and an image output unit 67 can be connected to the display panel 55. Video and images output from the image output unit 67 can be displayed on the display surface of the display panel 55. The display panel 55 can display video captured by a camera installed outside the vehicle via the image output unit 67. It can also display various information such as map information, traffic information, vehicle position information, route to the destination, distance, direction of travel, estimated arrival time, time, speed, direction, temperature, humidity, air pressure, tilt angle, and altitude. Furthermore, by connecting the image output unit 67 to the shading device 50, such as a television broadcast receiver (tuner) or a media player that plays video information recorded on a storage device such as a CD, DVD, or memory card, various videos, such as television broadcasts, can also be displayed on the display panel 55. In addition, by connecting information terminals such as notebook PCs, tablet terminals, mobile phones, and smartphones, and portable game consoles to the image output unit 67 wirelessly or via a wired connection, images and the like transmitted from these information terminals and game consoles can be displayed on the display panel 55 via the image output unit 67.

[0061] The display panel 55 may have a function as a touch panel. In this case, it is preferable that the display panel 55 displays applications and icons linked to the operation of the applications. This facilitates intuitive operation. For example, the map may be moved, enlarged, reduced, etc., by touch operation.

[0062] <Image correction processing> 1B and other figures, display unit 53 of shading device 50 is deployed close to front window 61 of the vehicle body, and therefore display panel 55 of display unit 53 is tilted from the driver's viewpoint. That is, the upper side of display panel 55 is located close to the driver's viewpoint, and the lower side of display panel 55 is located far from the driver's viewpoint. Therefore, when image 91 (FIG. 7A) displayed on display panel 55 is viewed from the driver's viewpoint, the vertical width (also referred to as height) of display panel 55 is narrow, and the horizontal width (also referred to as width) of the lower side of display panel 55 appears as image 92 (FIG. 7B). This appearance may impair the display quality and visibility of the image displayed on display panel 55.

[0063] Therefore, an image processing unit 68 may be provided in addition to the configuration shown in Fig. 3A. Fig. 3B shows an example in which the image output unit 67 has the image processing unit 68. The image processing unit 68 has a function of performing correction processing on the image data so that the image is stretched vertically so that the height of the image is longer, and so that the image has a trapezoidal shape with a wider left and right width at the bottom. Fig. 7C shows a conceptual schematic diagram of the correction processing performed by the image processing unit 68. It is preferable that the image processing unit 68 has a function of performing correction so that the image displayed on the display unit 53 appears to be located at the virtual display position 53IM.

[0064] Image output unit 67 in FIG. 3B has a function of outputting image 93 (FIG. 7D) obtained by correction by image processing unit 68 to display panel 55. At this time, as shown in FIG. 7E, from the driver's viewpoint, an image 94 equivalent to the image data before correction can be viewed. Note that while FIG. 3B shows an example in which image output unit 67 includes image processing unit 68, one embodiment of the present invention is not limited to this configuration, and image processing unit 68 may be provided separately from image output unit 67. Note that although FIGS. 7A to 7E schematically show the image displayed on display panel 55 and the image that is viewed, for the sake of explanation, the difference between the displayed image and the viewed image is exaggerated more than in reality.

[0065] [Light blocking device configuration example 2] 8A to 10D2 show an example of a shading device 50 according to one embodiment of the present invention. While Fig. 2A and other figures show an example in which the shading device 50 is installed in a vehicle 60A in which a rearview mirror 62 is attached to a roof portion 59, Figs. 8A to 10D2 show an example in which the shading device 50B is installed in a vehicle 60B in which a rearview mirror 62 is attached to a front windshield 61. Fig. 8A shows a schematic bird's-eye view of the exterior of the vehicle 60B, and Fig. 8B shows a perspective view of the vehicle 60B from inside. Here, an example is shown in which the shading device 50B, which has a shading portion 51 deployed near the front windshield 61 inside the vehicle 60B, is installed on the roof portion 59 of the vehicle 60B.

[0066] Unlike the vehicle 60A shown in FIG. 1A etc., the vehicle 60B shown in FIG. 8A etc. has a rearview mirror 62 attached to the front windshield 61. Therefore, when the shading device 50 is installed in the vehicle 60B and performs the unfolding and retracting operations shown in FIGS. 2A to 2C, the shading part 51 and the rearview mirror 62 interfere with each other. Therefore, in the vehicle 60B shown in FIG. 8A etc., it is preferable that the shading device 50B has a function to perform the unfolding and retracting operations shown in FIGS. 9A1 to 9D2 (deployment and storage method 1). Alternatively, in the vehicle 60B shown in FIG. 8A etc., it is preferable that the shading device 50B has a function to perform the unfolding and retracting operations shown in FIGS. 10A1 to 10D2 (deployment and storage method 2).

[0067] <How to deploy and store the shading device 1> 9A1 to 9D2 show an example of a vehicle 60B equipped with a shading device. 9A1, 9B1, 9C1, and 9D1 are cross-sectional schematic views showing the unfolding operation of shading unit 51B-1. Also, 9A2, 9B2, 9C2, and 9D2 are schematic views of the interior of the vehicle corresponding to 9A1, 9B1, 9C1, and 9D1, respectively.

[0068] 9A1 and 9A2 show a state in which light-shielding section 51B-1 (not shown) of light-shielding device 50B-1 (not shown) is stored in storage section 52. Light-shielding section 51B-1 is deployed in the order of step S1 shown in FIGS. 9B1 and 9B2, step S2 shown in FIGS. 9C1 and 9C2, and step S3 shown in FIGS. 9D1 and 9D2.

[0069] As shown in FIG. 9B1, the light-shielding portion 51B-1 has a first portion PT1, a second portion PT2 connected to the first portion PT1, and a third portion PT3 connected to the second portion PT2. As shown in FIG. 9B2 and other figures, the first portion PT1 has an opening PT1K at a position overlapping the rearview mirror 62. In step S1 shown in FIG. 9B1, the light-shielding portion 51B-1 is deployed downward from the roof portion 59 with the first portion PT1, the second portion PT2, and the third portion PT3 overlapping each other. Next, in step S2 shown in FIG. 9C1, the light-shielding portion 51B-1 is tilted so as to be approximately parallel to (or close to) the windshield 61 with the first portion PT1, the second portion PT2, and the third portion PT3 overlapping each other, and then the second portion PT2 and the third portion PT3 are deployed so as to be approximately parallel to the windshield 61. 9D1, the light-shielding portion 51B-1 can be deployed so that the first portion PT1, the second portion PT2, and the third portion PT3 of the light-shielding portion 51B-1 are close to the front windshield 61. The light-shielding portion 51B-1 can be stored in the reverse order to the above.

[0070] That is, the shading device 50B-1 has a first mechanism that deploys the shading portion 51B-1 downward from the roof portion 59 while the first portion PT1, the second portion PT2, and the third portion PT3 have an overlapping region. The shading device 50B-1 also has a second mechanism that tilts the shading portion 51B-1 so that it becomes substantially parallel to (or approaches) the front windshield 61 while the first portion PT1, the second portion PT2, and the third portion PT3 remain overlapping. The shading device 50B-1 also has a third mechanism that deploys the second portion PT2 and the third portion PT3 so that they become substantially parallel to the front windshield 61 while the first portion PT1 remains tilted.

[0071] 9B1 to 9D1, the light-shielding part 51B-1 can be deployed without interfering with the rearview mirror 62 installed on the front windshield 61. Also, the deployment method shown in Figures 9B1 to 9D1 allows the light-shielding part 51B-1 to be deployed without interfering with the dashboard 64 and the handlebars 63 of the vehicle body.

[0072] In this specification and elsewhere, "substantially parallel" refers to a state in which two straight lines are arranged at an angle of, for example, -30° to 30°. Therefore, this also includes cases in which the angle is -20° to 20°, -10° to 10°, -5° to 5°, and 0°.

[0073] <How to deploy and store the shading device 2> 10A1 to 10D2 show an example of a shading device 50. 10A1, 10B1, 10C1, and 10D1 are cross-sectional schematic views showing the unfolding operation of a shading portion 51B-2 (not shown) of a shading device 50B-2 (not shown). 10A2, 10B2, 10C2, and 10D2 are schematic views of the interior of a vehicle corresponding to 10A1, 10B1, 10C1, and 10D1, respectively.

[0074] 10A1 and 10A2 show a state in which light-shielding portion 51B-2 of light-shielding device 50B-2 is stored in storage portion 52. Light-shielding portion 51B-2 is deployed in the order of step S1 shown in FIGS. 10B1 and 10B2, step S2 shown in FIGS. 10C1 and 10C2, and step S3 shown in FIGS. 10D1 and 10D2.

[0075] As shown in FIG. 10B1, the light-shielding portion 51B-2 has a first portion PT1 and a second portion PT2 connected to the first portion PT1. As shown in FIG. 10B2 and other figures, the first portion PT1 has an opening PT1K at a position overlapping the rearview mirror 62. In step S1 shown in FIG. 10B1, the first portion PT1 is deployed downward from the roof portion 59 while the second portion PT2 is in a rolled-up state. Next, in step S2 shown in FIG. 9C1, the light-shielding portion 51B-2 is tilted so as to approach the windshield 61 while the second portion PT2 remains rolled-up, and then the second portion PT2 is deployed toward the lower end of the windshield 61. As a result, in step S3 shown in FIG. 10D1, the light-shielding portion 51B-2 can be deployed so that the first portion PT1 and the second portion PT2 of the light-shielding portion 51B-2 are in proximity to the windshield 61. Note that the light-shielding portion 51B-2 can be stored in the reverse order described above.

[0076] 10B1 to 10D1, the light-shielding part 51B-2 can be deployed without interfering with the rearview mirror 62 installed on the windshield 61. Also, by the deployment method shown in Figures 10B1 to 10D1, the light-shielding part 51B-2 can be deployed without interfering with the dashboard 64 and the handlebars 63. Note that the light-shielding part 51B-2 can be stored in the reverse order of the above.

[0077] The shading device 50B-1 and the shading device 50B-2 shown in the second configuration example of the shading device can have the same configuration as the shading device 50 shown in the first configuration example of the shading device, except that the deployment and storage methods are different.

[0078] [Light blocking device configuration example 3] In the shading device configuration example 1 and the shading device configuration example 2, examples are shown in which the shading devices (50, 50B, 50B-1, 50B-2) are provided on the front windshield 61 side of the vehicle 60 (vehicle 60A, vehicle 60B). However, one aspect of the present invention is not limited to installation on the front windshield 61 side, and the shading devices may be provided on the side windshield and rear windshield sides of the vehicle. The interior perspective views of vehicles 60C and 60D in FIGS. 11A to 11C show examples in which shading devices are provided on the front windshield (50F), side windshield (50S1, 50S2, 50S), and rear windshield (50R), respectively. FIG. 11B shows the shading devices 50F, 50S1, 50S2, 50S3, 50R during deployment, and FIG. 11C shows a modified example of the vehicle 60 provided with the shading device 50. The shading devices 50S1, 50S2, 50S3 and 50R shown in Figures 11A to 11C are installed at different positions in the vehicle, but can use the configuration of the shading device (50, 50B, 50B-1, 50B-2) shown in configuration example 1 of the shading device or configuration example 2 of the shading device.

[0079] As shown in FIG. 11C , even when the storage compartments 52F, 52S2 of the shading devices 50F, 50S2 are provided with transmissive portions 69 (69F, 69S2) to store the shading unit 51 (e.g., when the shading unit 51 is located in the position shown in FIG. 2A ), the display units 53F, 53S2 of the shading unit 51 may be overlapped with the transmissive portions 69F, 69S2 to allow the display units 53F, 53S2 to be visible from inside the vehicle. For example, when the storage compartment 52F of the shading device 50F has the transmissive portion 69F and the display unit 53F displays an image of the area above the vehicle 60D (image captured by an imaging device, not shown), the shading device 50F can be used as a substitute for a sunroof to improve the aesthetic appearance of the vehicle 60D. When the shading device 50F is used as a substitute for a sunroof, the shading device 50F is preferable because it is lighter than a typical glass sunroof.

[0080] In this embodiment, a vehicle is described as an example of a moving body, but the moving body is not limited to a vehicle. For example, a moving body may be a train, a monorail, a ship, or an aircraft (helicopter, airplane, rocket). In addition, a vehicle may be an automobile, a bus, a truck, or the like.

[0081] This embodiment mode can be implemented by appropriately combining at least a part thereof with other embodiment modes described in this specification.

[0082] (Embodiment 2) In this embodiment, a structural example of a display device that can be used for a light-blocking device of one embodiment of the present invention will be described. The display device described below can be applied to the display panel 55 in Embodiment 1.

[0083] One embodiment of the present invention is a display device having a light-emitting element (also referred to as a light-emitting device). The display device has two or more light-emitting elements that emit light of different colors. Each light-emitting element has a pair of electrodes and an EL layer therebetween. The light-emitting element is preferably an organic EL element (organic electroluminescent element). The two or more light-emitting elements that emit light of different colors each have an EL layer containing a different light-emitting material. For example, a full-color display device can be realized by having three types of light-emitting elements that emit red (R), green (G), or blue (B) light, respectively.

[0084] To fabricate a display device with multiple light-emitting elements that emit different colors, it is necessary to form at least layers (light-emitting layers) containing light-emitting materials with different emission colors in an island-like configuration. To fabricate part or all of the EL layer separately, a known method is to form island-shaped organic films using a metal or other shadow mask. However, this method often results in deviations from the design in the shape and position of the island-shaped organic films due to various factors, such as the accuracy of the metal mask, misalignment between the metal mask and the substrate, metal mask deflection, and the spread of the contours of the deposited film due to vapor scattering, making it difficult to achieve high resolution and a high aperture ratio. Furthermore, during deposition, the contours of the layer may become blurred, resulting in thinning of the edges. This means that the thickness of the island-shaped light-emitting layer may vary depending on the location. Furthermore, when fabricating large, high-resolution, or high-definition display devices, there is a concern that low dimensional accuracy of the metal mask and deformation due to heat may reduce manufacturing yield. Therefore, measures to artificially increase the resolution (also known as pixel density) have been taken, such as adopting special pixel arrangements such as a pentile array.

[0085] In this specification, the term "island-like" refers to a state in which two or more layers made of the same material and formed in the same process are physically separated. For example, an island-like light-emitting layer refers to a state in which the light-emitting layer is physically separated from the adjacent light-emitting layer.

[0086] In one embodiment of the present invention, an EL layer is processed into a fine pattern by photolithography without using a shadow mask such as a fine metal mask (FMM). This makes it possible to realize a display device with high definition and a large aperture ratio, which have been difficult to achieve until now. Furthermore, since the EL layer can be separately formed, a display device with extremely vivid images, high contrast, and high display quality can be realized. Note that, for example, the EL layer may be processed into a fine pattern using both a metal mask and photolithography.

[0087] Furthermore, the EL layer can be partially or entirely separated physically. This can suppress leakage current between adjacent light-emitting elements through a layer shared between them (also called a common layer). This can prevent crosstalk caused by unintended light emission, resulting in a display device with extremely high contrast. In particular, a display device with high current efficiency at low luminance can be realized.

[0088] One embodiment of the present invention can also be a display device that combines a white-emitting light-emitting element and a color filter. In this case, light-emitting elements provided in pixels (subpixels) that emit light of different colors can have the same configuration, and all layers can be common layers. Furthermore, part or all of each EL layer is separated by photolithography. This suppresses leakage current through the common layer, thereby realizing a display device with high contrast. In particular, in an element having a tandem structure in which multiple light-emitting layers are stacked via a highly conductive intermediate layer, leakage current through the intermediate layer can be effectively prevented, thereby realizing a display device that combines high brightness, high definition, and high contrast.

[0089] Furthermore, it is preferable to provide an insulating layer that covers at least the side surfaces of the island-shaped light-emitting layers. The insulating layer may be configured to cover a portion of the top surface of the island-shaped EL layers. The insulating layer is preferably made of a material that has barrier properties against water and oxygen. For example, an inorganic insulating film that is difficult for water or oxygen to diffuse can be used. This suppresses deterioration of the EL layer and realizes a highly reliable display device.

[0090] Furthermore, there is a region (recess) between two adjacent light-emitting elements where the EL layer of either light-emitting element is not provided. If a common electrode, or a common electrode and a common layer, is formed to cover the recess, the common electrode may be separated by a step at the edge of the EL layer (also called a step break), resulting in insulation of the common electrode on the EL layer. Therefore, it is preferable to use a configuration in which the local step located between two adjacent light-emitting elements is filled with a resin layer that functions as a planarizing film (also called LFP: Local Filling Planarization). The resin layer functions as a planarizing film. This suppresses step breaks in the common layer or common electrode, thereby achieving a highly reliable display device.

[0091] A more specific example of the structure of the display device of one embodiment of the present invention will be described below with reference to the drawings.

[0092] [Configuration example 1] 12A is a schematic top view of a display device 100 according to one embodiment of the present invention. The display device 100 includes a plurality of red light-emitting elements 110R, a plurality of green light-emitting elements 110G, and a plurality of blue light-emitting elements 110B on a substrate 101. In FIG. 12A, the light-emitting regions of the light-emitting elements are labeled with R, G, and B to easily distinguish the light-emitting elements from one another.

[0093] The light emitting elements 110R, 110G, and 110B are arranged in a matrix. Fig. 12A shows a so-called stripe arrangement in which light emitting elements of the same color are arranged in one direction. Note that the arrangement method of the light emitting elements is not limited to this, and arrangement methods such as an S-stripe arrangement, a delta arrangement, a Bayer arrangement, or a zigzag arrangement may also be used, or a pentile arrangement, a diamond arrangement, or the like may also be used.

[0094] As the light-emitting elements 110R, 110G, and 110B, it is preferable to use, for example, an OLED (Organic Light Emitting Diode) or a QLED (Quantum-dot Light Emitting Diode). Examples of light-emitting materials that the EL elements have include fluorescent materials, phosphorescent materials, inorganic compounds (such as quantum dot materials), and materials that exhibit thermally activated delayed fluorescence (TADF materials).

[0095] 12A also shows a connection electrode 111C that is electrically connected to the common electrode 113. The connection electrode 111C is given a potential (for example, an anode potential or a cathode potential) to be supplied to the common electrode 113. The connection electrode 111C is provided outside the display area where the light emitting elements 110R and the like are arranged.

[0096] The connection electrode 111C can be provided along the periphery of the display area. For example, it may be provided along one side of the periphery of the display area, or it may be provided over two or more sides of the periphery of the display area. That is, if the top surface shape of the display area is rectangular, the top surface shape of the connection electrode 111C can be strip-shaped (rectangular), L-shaped, U-shaped (square bracket shaped), quadrangular, or the like.

[0097] Figures 12B and 12C are schematic cross-sectional views corresponding to dashed dotted lines A1-A2 and A3-A4 in Figure 12A, respectively. Figure 12B shows a schematic cross-sectional view of light-emitting element 110R, light-emitting element 110G, and light-emitting element 110B, and Figure 12C shows a schematic cross-sectional view of connection portion 140 where connection electrode 111C and common electrode 113 are connected.

[0098] The light-emitting element 110R has a pixel electrode 111R, an organic layer 112R, a common layer 114, and a common electrode 113. The light-emitting element 110G has a pixel electrode 111G, an organic layer 112G, a common layer 114, and a common electrode 113. The light-emitting element 110B has a pixel electrode 111B, an organic layer 112B, a common layer 114, and a common electrode 113. The common layer 114 and the common electrode 113 are provided in common to the light-emitting element 110R, the light-emitting element 110G, and the light-emitting element 110B.

[0099] Organic layer 112R of light emitting element 110R contains a light emitting organic compound that emits light having an intensity at least in the red wavelength range. Organic layer 112G of light emitting element 110G contains a light emitting organic compound that emits light having an intensity at least in the green wavelength range. Organic layer 112B of light emitting element 110B contains a light emitting organic compound that emits light having an intensity at least in the blue wavelength range. Organic layer 112R, organic layer 112G, and organic layer 112B can also be called EL layers, and each contains at least a layer (light emitting layer) containing a light emitting organic compound.

[0100] Hereinafter, when describing matters common to light emitting element 110R, light emitting element 110G, and light emitting element 110B, they may be referred to as light emitting element 110. Similarly, when describing matters common to components distinguished by alphabets, such as organic layer 112R, organic layer 112G, and organic layer 112B, they may be described using symbols without the alphabets.

[0101] The organic layer 112 and the common layer 114 can each independently have one or more of an electron injection layer, an electron transport layer, a hole injection layer, and a hole transport layer. For example, the organic layer 112 can have a stacked structure of a hole injection layer, a hole transport layer, a light-emitting layer, and an electron transport layer from the pixel electrode 111 side, and the common layer 114 can have an electron injection layer.

[0102] The pixel electrode 111R, pixel electrode 111G, and pixel electrode 111B are provided for each light-emitting element. The common electrode 113 and common layer 114 are provided as a continuous layer common to each light-emitting element. A conductive film that is translucent to visible light is used for either one of the pixel electrodes or the common electrode 113, and a conductive film that is reflective to visible light is used for the other. By making each pixel electrode translucent and the common electrode 113 reflective, a bottom-emission display device can be obtained. Conversely, by making each pixel electrode reflective and the common electrode 113 translucent, a top-emission display device can be obtained. Incidentally, by making both the pixel electrodes and the common electrode 113 translucent, a dual-emission display device can also be obtained.

[0103] A protective layer 121 is provided on the common electrode 113 to cover the light emitting elements 110R, 110G, and 110B. The protective layer 121 has a function of preventing impurities such as water from diffusing from above into each light emitting element.

[0104] The edge of the pixel electrode 111 (111R, 111G, 111B) preferably has a tapered shape. When the edge of the pixel electrode has a tapered shape, the organic layer 112 provided along the side surface of the pixel electrode also has a tapered shape. By tapering the side surface of the pixel electrode, the coverage of the EL layer provided along the side surface of the pixel electrode can be improved. Furthermore, by tapering the side surface of the pixel electrode, foreign matter (for example, dust or particles) during the manufacturing process can be easily removed by a process such as cleaning, which is preferable.

[0105] In this specification, the term "tapered shape" refers to a shape in which at least a part of the side surface of the structure is inclined with respect to the substrate surface. For example, it is preferable to have a region in which the angle (also called the taper angle) between the inclined side surface and the substrate surface is less than 90°.

[0106] The organic layer 112 is processed into an island shape by photolithography. As a result, the angle between the top surface and the side surface of the organic layer 112 at its edge is close to 90 degrees. On the other hand, an organic film formed using an FMM (Fine Metal Mask) or the like tends to become gradually thinner closer to the edge. For example, the top surface is formed in a sloped shape over a range of 1 μm to 10 μm from the edge, making it difficult to distinguish between the top surface and the side surface.

[0107] Between two adjacent light emitting elements, an insulating layer 125, a resin layer 126, and a layer 128 are provided.

[0108] Between two adjacent light-emitting elements, the side surfaces of the organic layers 112 face each other with the resin layer 126 sandwiched therebetween. The resin layer 126 is located between the two adjacent light-emitting elements and is provided so as to fill the ends of each organic layer 112 and the region between the two organic layers 112. The resin layer 126 has a smooth, convex upper surface, and a common layer 114 and a common electrode 113 are provided to cover the upper surface of the resin layer 126.

[0109] The resin layer 126 functions as a planarization film that fills in the step between two adjacent light-emitting elements. By providing the resin layer 126, it is possible to prevent the phenomenon (also called step disconnection) in which the common electrode 113 is divided by the step at the end of the organic layer 112, and the common electrode on the organic layer 112 is isolated. The resin layer 126 can also be called LFP (Local Filling Planarization).

[0110] An insulating layer containing an organic material can be suitably used as the resin layer 126. For example, acrylic resin, polyimide resin, epoxy resin, imide resin, polyamide resin, polyimideamide resin, silicone resin, siloxane resin, benzocyclobutene resin, phenol resin, precursors of these resins, etc. can be used as the resin layer 126. Alternatively, organic materials such as polyvinyl alcohol (PVA), polyvinyl butyral, polyvinylpyrrolidone, polyethylene glycol, polyglycerin, pullulan, water-soluble cellulose, or alcohol-soluble polyamide resin can be used as the resin layer 126.

[0111] Furthermore, a photosensitive resin can be used as the resin layer 126. A photoresist can be used as the photosensitive resin. The photosensitive resin can be a positive type material or a negative type material.

[0112] The resin layer 126 may contain a material that absorbs visible light. For example, the resin layer 126 itself may be made of a material that absorbs visible light, or the resin layer 126 may contain a pigment that absorbs visible light. For example, the resin layer 126 may be a resin that can be used as a color filter that transmits red, blue, or green light and absorbs other light, or a resin that contains carbon black as a pigment and functions as a black matrix.

[0113] The insulating layer 125 is provided in contact with the side surface of the organic layer 112. The insulating layer 125 is also provided to cover the upper end portion of the organic layer 112. A portion of the insulating layer 125 is provided in contact with the upper surface of the substrate 101.

[0114] The insulating layer 125 is located between the resin layer 126 and the organic layer 112, and functions as a protective film for preventing the resin layer 126 from coming into contact with the organic layer 112. If the organic layer 112 and the resin layer 126 come into contact with each other, the organic layer 112 may be dissolved by an organic solvent or the like used when forming the resin layer 126. Therefore, as shown in this embodiment, by providing the insulating layer 125 between the organic layer 112 and the resin layer 126, it is possible to protect the side surfaces of the organic layer.

[0115] The insulating layer 125 can be an insulating layer containing an inorganic material. For example, an inorganic insulating film such as an insulating oxide film, a nitride insulating film, an oxynitride insulating film, or a nitride oxide insulating film can be used for the insulating layer 125. The insulating layer 125 may have a single-layer structure or a stacked-layer structure. Examples of oxide insulating films include a silicon oxide film, an aluminum oxide film, a magnesium oxide film, an indium gallium zinc oxide film, a gallium oxide film, a germanium oxide film, an yttrium oxide film, a zirconium oxide film, a lanthanum oxide film, a neodymium oxide film, a hafnium oxide film, and a tantalum oxide film. Examples of nitride insulating films include a silicon nitride film and an aluminum nitride film. Examples of oxynitride insulating films include a silicon oxynitride film and an aluminum oxynitride film. Examples of nitride oxide insulating films include a silicon nitride oxide film and an aluminum nitride oxide film. In particular, by using an inorganic insulating film such as a metal oxide film, an aluminum oxide film, or a silicon oxide film formed by an ALD method as the insulating layer 125, an insulating layer 125 with few pinholes and excellent protection of the EL layer can be formed.

[0116] In this specification and elsewhere, an oxynitride refers to a material whose composition contains more oxygen than nitrogen, and a nitride oxide refers to a material whose composition contains more nitrogen than oxygen. For example, silicon oxynitride refers to a material whose composition contains more oxygen than nitrogen, and silicon nitride oxide refers to a material whose composition contains more nitrogen than oxygen.

[0117] The insulating layer 125 can be formed by a sputtering method, a CVD method, a PLD method, an ALD method, etc. The insulating layer 125 is preferably formed by an ALD method, which has good coverage.

[0118] Furthermore, a reflective film (for example, a metal film containing one or more selected from silver, palladium, copper, titanium, aluminum, etc.) may be provided between the insulating layer 125 and the resin layer 126, so that the light emitted from the light-emitting layer is reflected by the reflective film, thereby improving the light extraction efficiency.

[0119] The layer 128 is a remaining portion of a protective layer (also referred to as a mask layer or a sacrificial layer) for protecting the organic layer 112 during etching of the organic layer 112. The layer 128 can be made of a material that can be used for the insulating layer 125. In particular, it is preferable to use the same material for the layer 128 and the insulating layer 125 because this allows the use of common processing equipment and the like.

[0120] In particular, inorganic insulating films such as metal oxide films such as aluminum oxide films and hafnium oxide films, or silicon oxide films formed by the ALD method have few pinholes and are therefore excellent in protecting the EL layer, and can be suitably used for the insulating layer 125 and the layer 128.

[0121] A protective layer 121 is provided to cover the common electrode 113 .

[0122] The protective layer 121 may have, for example, a single-layer structure or a stacked-layer structure including at least an inorganic insulating film. Examples of the inorganic insulating film include oxide films or nitride films such as a silicon oxide film, a silicon oxynitride film, a silicon nitride oxide film, a silicon nitride film, an aluminum oxide film, an aluminum oxynitride film, and a hafnium oxide film. Alternatively, the protective layer 121 may be made of a semiconductor material or a conductive material such as indium gallium oxide, indium zinc oxide, indium tin oxide, or indium gallium zinc oxide.

[0123] The protective layer 121 may also be a laminated film of an inorganic insulating film and an organic insulating film. For example, it is preferable to have a configuration in which an organic insulating film is sandwiched between a pair of inorganic insulating films. Furthermore, it is preferable that the organic insulating film functions as a planarizing film. This makes it possible to make the upper surface of the organic insulating film flat, thereby improving the coverage of the inorganic insulating film thereon and enhancing the barrier properties. In addition, since the upper surface of the protective layer 121 is flat, it is preferable that when a structure (e.g., a color filter, a touch sensor electrode, a lens array, etc.) is provided above the protective layer 121, the influence of uneven shapes caused by the structure below can be reduced.

[0124] 12C shows a connection portion 140 where the connection electrode 111C and the common electrode 113 are electrically connected. In the connection portion 140, an opening is provided in the insulating layer 125 and the resin layer 126 above the connection electrode 111C. The connection electrode 111C and the common electrode 113 are electrically connected in the opening.

[0125] 12C shows connection portion 140 where connection electrode 111C and common electrode 113 are electrically connected, but common electrode 113 may be provided on connection electrode 111C via common layer 114. In particular, when a carrier injection layer is used for common layer 114, the electrical resistivity of the material used for common layer 114 is sufficiently low and the common layer can be formed thin, so that there is often no problem even if common layer 114 is located at connection portion 140. This allows common electrode 113 and common layer 114 to be formed using the same masking mask, thereby reducing manufacturing costs.

[0126] The above is a description of an example of the configuration of the display device.

[0127] [Pixel layout] The following mainly describes pixel layouts that are different from those in Fig. 12A. There are no particular limitations on the arrangement of light-emitting elements (sub-pixels), and various methods can be applied.

[0128] The top surface shape of the sub-pixel may be, for example, a triangle, a quadrangle (including a rectangle and a square), a polygon such as a pentagon, a polygon with rounded corners, an ellipse, a circle, etc. Here, the top surface shape of the sub-pixel corresponds to the top surface shape of the light-emitting region of the light-emitting element.

[0129] An S-stripe arrangement is applied to the pixel 150 shown in Fig. 13A. The pixel 150 shown in Fig. 13A is composed of three sub-pixels: light-emitting elements 110a, 110b, and 110c. For example, the light-emitting element 110a may be a blue light-emitting element, the light-emitting element 110b may be a red light-emitting element, and the light-emitting element 110c may be a green light-emitting element.

[0130] The pixel 150 shown in FIG. 13B includes a light-emitting element 110a having a generally trapezoidal top view with rounded corners, a light-emitting element 110b having a generally triangular top view with rounded corners, and a light-emitting element 110c having a generally rectangular or hexagonal top view with rounded corners. The light-emitting element 110a has a larger light-emitting area than the light-emitting element 110b. In this manner, the shape and size of each light-emitting element can be determined independently. For example, the more reliable the light-emitting element, the smaller the size can be. For example, the light-emitting element 110a may be a green light-emitting element, the light-emitting element 110b may be a red light-emitting element, and the light-emitting element 110c may be a blue light-emitting element.

[0131] The pixels 124a and 124b shown in Fig. 13C are arranged in a Pentile array. Fig. 13C shows an example in which pixel 124a having light-emitting elements 110a and 110b and pixel 124b having light-emitting elements 110b and 110c are arranged alternately. For example, light-emitting element 110a may be a red light-emitting element, light-emitting element 110b may be a green light-emitting element, and light-emitting element 110c may be a blue light-emitting element.

[0132] 13D and 13E are arranged in a delta configuration. Pixel 124a has two light-emitting elements (light-emitting elements 110a and 110b) in the top row (first row) and one light-emitting element (light-emitting element 110c) in the bottom row (second row). Pixel 124b has one light-emitting element (light-emitting element 110c) in the top row (first row) and two light-emitting elements (light-emitting elements 110a and 110b) in the bottom row (second row). For example, light-emitting element 110a may be a red light-emitting element, light-emitting element 110b may be a green light-emitting element, and light-emitting element 110c may be a blue light-emitting element.

[0133] FIG. 13D shows an example in which each light-emitting element has a substantially rectangular top view shape with rounded corners, and FIG. 13E shows an example in which each light-emitting element has a circular top view shape.

[0134] 13F shows an example in which light-emitting elements of each color are arranged in a zigzag pattern. Specifically, when viewed from above, the positions of the upper sides of two light-emitting elements arranged in a column direction (e.g., light-emitting elements 110a and 110b, or light-emitting elements 110b and 110c) are misaligned. For example, light-emitting element 110a may be a red light-emitting element, light-emitting element 110b may be a green light-emitting element, and light-emitting element 110c may be a blue light-emitting element.

[0135] In photolithography, the finer the pattern to be processed, the more significant the effect of light diffraction becomes. This reduces the fidelity of the photomask pattern when it is transferred by exposure, making it difficult to process the resist mask into the desired shape. Therefore, even if the photomask pattern is rectangular, it is likely to have rounded corners. As a result, the top surface shape of the light-emitting element may be polygonal with rounded corners, elliptical, circular, or the like.

[0136] Furthermore, in a method for manufacturing a display panel according to one embodiment of the present invention, the EL layer is processed into an island shape using a resist mask. The resist film formed on the EL layer needs to be cured at a temperature lower than the heat resistance temperature of the EL layer. Therefore, depending on the heat resistance temperature of the material for the EL layer and the curing temperature of the resist material, the resist film may not be cured sufficiently. A resist film that is not cured sufficiently may have a shape that is different from the desired shape during processing. As a result, the top surface shape of the EL layer may become a polygon with rounded corners, an ellipse, a circle, or the like. For example, when a resist mask with a square top surface shape is formed, a resist mask with a circular top surface shape may be formed, resulting in a circular top surface shape of the EL layer.

[0137] In order to obtain a desired top surface shape for the EL layer, a technique for correcting the mask pattern in advance (OPC (Optical Proximity Correction) technique) may be used so that the design pattern and the transfer pattern match. Specifically, OPC technique adds correction patterns to the corners of the figures on the mask pattern.

[0138] This concludes the description of the pixel layout.

[0139] This embodiment mode can be implemented by appropriately combining at least a part thereof with other embodiment modes described in this specification.

[0140] (Embodiment 3) In this embodiment, a structural example of a display device according to one embodiment of the present invention will be described.

[0141] The display device of this embodiment can be used in electronic devices with relatively large screens, such as television sets, desktop or notebook personal computers, computer monitors, digital signage, large game machines such as pachinko machines, as well as display units of digital cameras, digital video cameras, digital photo frames, mobile phones, portable game machines, smartphones, wristwatch-type terminals, tablet terminals, personal digital assistants, and sound reproduction devices.

[0142] [Display device 400] FIG. 14 shows a perspective view of display device 400, and FIG. 15A shows a cross-sectional view of display device 400.

[0143] The display device 400 has a configuration in which a substrate 452 and a substrate 451 are bonded together. In Fig. 14, the substrate 452 is clearly indicated by a dashed line.

[0144] The display device 400 includes a display unit 462, a circuit 464, wiring 465, etc. Fig. 14 shows an example in which an IC 473 and an FPC 472 are mounted on the display device 400. Therefore, the configuration shown in Fig. 14 can also be said to be a display module including the display device 400, an IC (integrated circuit), and an FPC.

[0145] The circuit 464 can be, for example, a scanning line driver circuit.

[0146] The wiring 465 has a function of supplying signals and power to the display portion 462 and the circuit 464. The signals and power are input to the wiring 465 from the outside via the FPC 472 or input to the wiring 465 from the IC 473.

[0147] 14 shows an example in which an IC 473 is provided on a substrate 451 by a COG (Chip On Glass) method or a COF (Chip on Film) method. The IC 473 may be, for example, an IC having a scanning line driver circuit or a signal line driver circuit. Note that the display device 400 and the display module may not include an IC. Alternatively, the IC may be mounted on an FPC by a COF method or the like.

[0148] 15A shows an example of a cross section of a part of a region including FPC 472, a part of circuit 464, a part of display unit 462, and a part of a region including a connecting portion of display device 400. Fig. 15A shows an example of a cross section of display unit 462, particularly a region including light-emitting element 430b that emits green light and light-emitting element 430c that emits blue light.

[0149] The display device 400 shown in FIG. 15A includes the transistor 202, the transistor 210, the light-emitting element 430b, the light-emitting element 430c, and the like between a substrate 453 and a substrate 454.

[0150] The light-emitting element described in Embodiment 2 can be applied to the light-emitting element 430b and the light-emitting element 430c.

[0151] Here, when a pixel of a display device has three types of subpixels that emit different colors, the three subpixels include subpixels of three colors of red (R), green (G), and blue (B), or subpixels of three colors of yellow (Y), cyan (C), and magenta (M), etc. When a pixel of a display device has four subpixels, the four subpixels include subpixels of four colors of R, G, B, and white (W), or subpixels of four colors of R, G, B, and Y, etc.

[0152] The substrate 454 and the protective layer 416 are bonded together via an adhesive layer 442. The adhesive layer 442 is provided to overlap the light emitting element 430b and the light emitting element 430c, respectively, and a solid sealing structure is applied to the display device 400.

[0153] The light-emitting elements 430b and 430c each have a conductive layer 411a, a conductive layer 411b, and a conductive layer 411c as pixel electrodes. The conductive layer 411b is reflective to visible light and functions as a reflective electrode. The conductive layer 411c is transparent to visible light and functions as an optical adjustment layer.

[0154] The conductive layer 411a is connected to a conductive layer 222b included in the transistor 210 through an opening provided in the insulating layer 214. The transistor 210 has a function of controlling the driving of a light-emitting element.

[0155] An EL layer 412G or an EL layer 412B is provided to cover the pixel electrode. An insulating layer 421 is provided in contact with the side surfaces of the EL layer 412G and the side surfaces of the EL layer 412B, and a resin layer 422 is provided to fill the recesses in the insulating layer 421. A layer 424 is provided between the EL layer 412G and the insulating layer 421, and between the EL layer 412B and the insulating layer 421. A common layer 414, a common electrode 413, and a protective layer 416 are provided to cover the EL layer 412G and the EL layer 412B.

[0156] Light emitted from the light-emitting element is emitted toward the substrate 452. The substrate 452 is preferably made of a material that is highly transparent to visible light.

[0157] The transistor 202 and the transistor 210 can be fabricated using the same materials and processes.

[0158] The substrate 453 and the insulating layer 212 are bonded together by an adhesive layer 455 .

[0159] The display device 400 is manufactured by first bonding a substrate 454 provided with the insulating layer 212, the transistors, the light-emitting elements, and the like to the substrate 454 with an adhesive layer 442. The substrate 453 is then attached to the exposed surface of the substrate 454, and the components formed on the substrate 454 are transferred to the substrate 453. The substrate 453 and the substrate 454 are preferably flexible. This can increase the flexibility of the display device 400.

[0160] For the insulating layer 212, the inorganic insulating film that can be used for the insulating layer 211 and the insulating layer 215 can be used.

[0161] A connection portion 204 is provided in a region of the substrate 453 where the substrate 454 does not overlap. In the connection portion 204, a wiring 465 is electrically connected to the FPC 472 via a conductive layer 466 and a connection layer 242. The conductive layer 466 can be obtained by processing the same conductive film as the pixel electrode. This allows the connection portion 204 and the FPC 472 to be electrically connected via the connection layer 242.

[0162] The transistor 202 and the transistor 210 each include a conductive layer 221 functioning as a gate, an insulating layer 211 functioning as a gate insulating layer, a semiconductor layer including a channel formation region 231i and a pair of low-resistance regions 231n, a conductive layer 222a connected to one of the pair of low-resistance regions 231n, a conductive layer 222b connected to the other of the pair of low-resistance regions 231n, an insulating layer 225 functioning as a gate insulating layer, a conductive layer 223 functioning as a gate, and an insulating layer 215 covering the conductive layer 223. The insulating layer 211 is located between the conductive layer 221 and the channel formation region 231i. The insulating layer 225 is located between the conductive layer 223 and the channel formation region 231i.

[0163] The conductive layer 222a and the conductive layer 222b are each connected to the low-resistance region 231n through an opening provided in the insulating layer 215. One of the conductive layer 222a and the conductive layer 222b functions as a source, and the other functions as a drain.

[0164] 15A shows an example in which the insulating layer 225 covers the top surface and side surfaces of the semiconductor layer. The conductive layer 222a and the conductive layer 222b are connected to the low-resistance region 231n through openings provided in the insulating layer 225 and the insulating layer 215, respectively.

[0165] On the other hand, in the transistor 209 shown in FIG. 15B, the insulating layer 225 overlaps with the channel formation region 231i of the semiconductor layer 231 but does not overlap with the low-resistance region 231n. For example, the structure shown in FIG. 15B can be manufactured by processing the insulating layer 225 using the conductive layer 223 as a mask. In FIG. 15B, the insulating layer 215 is provided to cover the insulating layer 225 and the conductive layer 223, and the conductive layer 222a and the conductive layer 222b are each connected to the low-resistance region 231n through openings in the insulating layer 215. Furthermore, an insulating layer 218 may be provided to cover the transistor.

[0166] The structure of the transistor included in the display device of this embodiment is not particularly limited. For example, a planar transistor, a staggered transistor, an inverted staggered transistor, or the like can be used. Furthermore, either a top-gate transistor or a bottom-gate transistor structure may be used. Alternatively, gates may be provided above and below a semiconductor layer in which a channel is formed.

[0167] The transistor 202 and the transistor 210 have a structure in which a semiconductor layer in which a channel is formed is sandwiched between two gates. The two gates may be connected and the same signal may be supplied to drive the transistor. Alternatively, the threshold voltage of the transistor may be controlled by applying a potential for controlling the threshold voltage to one of the two gates and a potential for driving to the other.

[0168] The crystallinity of a semiconductor material used for a semiconductor layer of a transistor is not particularly limited, and any of an amorphous semiconductor, a single-crystal semiconductor, and a semiconductor having crystallinity other than single crystal (a microcrystalline semiconductor, a polycrystalline semiconductor, or a semiconductor having a crystalline region in part) may be used. The use of a single-crystal semiconductor or a crystalline semiconductor is preferable because it can suppress deterioration of transistor characteristics.

[0169] The semiconductor layer of the transistor preferably includes a metal oxide (also referred to as an oxide semiconductor). That is, the display device of this embodiment preferably includes a transistor using a metal oxide for a channel formation region (hereinafter referred to as an OS transistor).

[0170] The band gap of the metal oxide used for the semiconductor layer of the transistor is preferably 2 eV or more, more preferably 2.5 eV or more. Use of a metal oxide with a wide band gap can reduce the off-state current of the OS transistor.

[0171] The metal oxide preferably contains at least indium or zinc, and more preferably contains indium and zinc. For example, the metal oxide preferably contains indium, M (wherein M is one or more selected from gallium, aluminum, yttrium, tin, silicon, boron, copper, vanadium, beryllium, titanium, iron, nickel, germanium, zirconium, molybdenum, lanthanum, cerium, neodymium, hafnium, tantalum, tungsten, magnesium, and cobalt), and zinc.

[0172] Alternatively, the semiconductor layer of the transistor may contain silicon, such as amorphous silicon or crystalline silicon (such as low-temperature polysilicon or single-crystal silicon).

[0173] The transistors included in the circuit 464 may have the same structure as or different from the transistors included in the display portion 462. The transistors included in the circuit 464 may all have the same structure or may have two or more types of structures. Similarly, the transistors included in the display portion 462 may all have the same structure or may have two or more types of structures.

[0174] At least one insulating layer covering the transistor is preferably made of a material that is resistant to the diffusion of impurities such as water and hydrogen. This allows the insulating layer to function as a barrier layer. With this structure, it is possible to effectively prevent impurities from diffusing into the transistor from the outside, thereby improving the reliability of the display device.

[0175] It is preferable to use an inorganic insulating film for each of the insulating layers 211, 212, 215, 218, and 225. Examples of the inorganic insulating film that can be used include a silicon nitride film, a silicon oxynitride film, a silicon oxide film, a silicon nitride oxide film, an aluminum oxide film, and an aluminum nitride film. Alternatively, a hafnium oxide film, an yttrium oxide film, a zirconium oxide film, a gallium oxide film, a tantalum oxide film, a magnesium oxide film, a lanthanum oxide film, a cerium oxide film, and a neodymium oxide film may also be used. Two or more of the above-described inorganic insulating films may be stacked.

[0176] An organic insulating film is suitable for the insulating layer 214, which functions as a planarizing layer. Materials that can be used for the organic insulating film include acrylic resin, polyimide resin, epoxy resin, polyamide resin, polyimideamide resin, siloxane resin, benzocyclobutene resin, phenol resin, and precursors of these resins.

[0177] Various optical members can be arranged along the inner or outer surface of substrate 454. Examples of optical members include a light-shielding layer, a polarizing plate, a retardation plate, a light diffusion layer (such as a diffusion film), an anti-reflection layer, a microlens array, and a light-collecting film. In addition, an antistatic film that suppresses the adhesion of dust, a water-repellent film that makes it difficult for dirt to adhere, a hard coat film that suppresses scratches caused by use, an impact absorbing layer, etc. may be arranged on the outer surface of substrate 454.

[0178] By providing the protective layer 416 that covers the light-emitting element, impurities such as water can be prevented from entering the light-emitting element, and the reliability of the light-emitting element can be improved.

[0179] 15A shows a connection portion 228. The common electrode 413 and a wiring are electrically connected at the connection portion 228. FIG. 15A shows an example in which the same layered structure as that of the pixel electrode is applied to the wiring.

[0180] The substrate 453 and the substrate 454 can each be made of glass, quartz, ceramic, sapphire, resin, metal, alloy, semiconductor, or the like. A material that transmits light is used for the substrate on the side from which light from the light-emitting element is extracted. Using a flexible material for the substrate 453 and the substrate 454 can increase the flexibility of the display device. Alternatively, a polarizing plate may be used for the substrate 453 or the substrate 454.

[0181] Substrates 453 and 454 can be made of polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyacrylonitrile resin, acrylic resin, polyimide resin, polymethyl methacrylate resin, polycarbonate (PC) resin, polyethersulfone (PES) resin, polyamide resin (nylon, aramid, etc.), polysiloxane resin, cycloolefin resin, polystyrene resin, polyamideimide resin, polyurethane resin, polyvinyl chloride resin, polyvinylidene chloride resin, polypropylene resin, polytetrafluoroethylene (PTFE) resin, ABS resin, cellulose nanofiber, etc. One or both of substrates 453 and 454 may be made of glass having a thickness sufficient to provide flexibility.

[0182] The adhesive layer can be made of various curable adhesives, such as photo-curable adhesives (e.g., ultraviolet curable), reactive curable adhesives, thermosetting adhesives, and anaerobic adhesives. Examples of such adhesives include epoxy resin, acrylic resin, silicone resin, phenolic resin, polyimide resin, imide resin, PVC (polyvinyl chloride) resin, PVB (polyvinyl butyral) resin, and EVA (ethylene vinyl acetate) resin. Materials with low moisture permeability, such as epoxy resin, are particularly preferred. Two-component resins may also be used. Adhesive sheets, etc., may also be used.

[0183] The connection layer 242 may be made of an anisotropic conductive film (ACF), an anisotropic conductive paste (ACP), or the like.

[0184] Materials that can be used for conductive layers such as the gate, source, and drain of a transistor, as well as various wirings and electrodes that constitute a display device include metals such as aluminum, titanium, chromium, nickel, copper, yttrium, zirconium, molybdenum, silver, tantalum, and tungsten, and alloys containing these metals as main components, etc. Films containing these materials can be used as a single layer or a stacked layer structure.

[0185] Examples of light-transmitting conductive materials include conductive oxides such as indium oxide, indium tin oxide, indium zinc oxide, zinc oxide, and zinc oxide containing gallium, or graphene. Alternatively, metal materials such as gold, silver, platinum, magnesium, nickel, tungsten, chromium, molybdenum, iron, cobalt, copper, palladium, and titanium, or alloy materials containing such metal materials, can be used. Alternatively, nitrides of such metal materials (e.g., titanium nitride) can be used. When using metal materials or alloy materials (or their nitrides), it is preferable to thin them sufficiently to ensure light-transmitting properties. A stacked film of the above materials can also be used as the conductive layer. For example, a stacked film of an alloy of silver and magnesium and indium tin oxide is preferable because it can enhance conductivity. These can also be used for conductive layers such as various wirings and electrodes constituting a display device, and for conductive layers (conductive layers functioning as pixel electrodes or common electrodes) of light-emitting elements.

[0186] Examples of insulating materials that can be used for each insulating layer include resins such as acrylic resin and epoxy resin, and inorganic insulating materials such as silicon oxide, silicon oxynitride, silicon nitride oxide, silicon nitride, and aluminum oxide.

[0187] This embodiment mode can be implemented by appropriately combining at least a part thereof with other embodiment modes described in this specification.

[0188] (Fourth embodiment) In this embodiment, a light-emitting element (also referred to as a light-emitting device) that can be used for a display device that is one embodiment of the present invention will be described.

[0189] In this specification, etc., a device fabricated using a metal mask or FMM (fine metal mask, high-resolution metal mask) may be referred to as a device with an MM (metal mask) structure. Also, in this specification, etc., a device fabricated without using a metal mask or FMM may be referred to as a device with an MML (metal maskless) structure.

[0190] In this specification, a structure in which different light-emitting layers are formed or different light-emitting layers are painted for each color light-emitting device (here, blue (B), green (G), and red (R)) may be referred to as an SBS (Side By Side) structure. In this specification, a light-emitting device that can emit white light may be referred to as a white light-emitting device. A white light-emitting device can be combined with a colored layer (for example, a color filter) to realize a full-color display device.

[0191] [Light-emitting device] Light-emitting devices can be broadly divided into single-structure and tandem-structure devices. A single-structure device has one light-emitting unit between a pair of electrodes. The light-emitting unit is configured to include one or more light-emitting layers. To obtain white light emission with a single structure, two light-emitting layers can be selected so that the light emitted by each of the two light-emitting layers has a complementary color relationship. For example, by making the light-emitting color of the first light-emitting layer and the light-emitting color of the second light-emitting layer complementary, a configuration can be obtained in which the entire light-emitting device emits white light. Furthermore, in the case of a light-emitting device having three or more light-emitting layers, the light-emitting colors of the three or more light-emitting layers can be combined to produce a configuration in which the entire light-emitting device emits white light.

[0192] A tandem-structure device has multiple light-emitting units between a pair of electrodes. Each light-emitting unit is configured to include one or more light-emitting layers. By using light-emitting layers that emit light of the same color in each light-emitting unit, the brightness per given current can be increased, and the device can be made more reliable than a single-structure light-emitting device. To obtain white light emission in a tandem structure, the light from the light-emitting layers of multiple light-emitting units can be combined to obtain white light emission. Note that the combination of light-emitting colors that can produce white light emission is the same as in the single-structure configuration. Note that in a tandem-structure device, it is preferable to provide an intermediate layer, such as a charge-generating layer, between the multiple light-emitting units.

[0193] When comparing a white light-emitting device with a light-emitting device having an SBS structure, the light-emitting device with an SBS structure can consume less power than the white light-emitting device, and the manufacturing process of the white light-emitting device is simpler than that of the light-emitting device having an SBS structure, so the manufacturing cost can be lower and the manufacturing yield can be higher.

[0194] <Example of light-emitting device configuration> As shown in FIG. 16A, the light-emitting device has an EL layer 790 between a pair of electrodes (a lower electrode 791 and an upper electrode 792). The EL layer 790 can be composed of multiple layers, such as a layer 720, a light-emitting layer 711, and a layer 730. The layer 720 can have, for example, a layer containing a substance with high electron injection properties (electron injection layer) and a layer containing a substance with high electron transport properties (electron transport layer). The light-emitting layer 711 contains, for example, a light-emitting compound. The layer 730 can have, for example, a layer containing a substance with high hole injection properties (hole injection layer) and a layer containing a substance with high hole transport properties (hole transport layer).

[0195] A structure having layer 720, light-emitting layer 711, and layer 730 provided between a pair of electrodes can function as a single light-emitting unit, and the structure of FIG. 16A is referred to as a single structure in this specification.

[0196] Specifically, the light-emitting device shown in FIG. 16B includes layers 730-1 and 730-2, a light-emitting layer 711, layers 720-1 and 720-2, and an upper electrode 792 on a lower electrode 791. For example, the lower electrode 791 serves as an anode, and the upper electrode 792 serves as a cathode. In this case, the layer 730-1 functions as a hole injection layer, the layer 730-2 functions as a hole transport layer, the layer 720-1 functions as an electron transport layer, and the layer 720-2 functions as an electron injection layer. On the other hand, when the lower electrode 791 serves as a cathode and the upper electrode 792 serves as an anode, the layer 730-1 functions as an electron injection layer, the layer 730-2 functions as an electron transport layer, the layer 720-1 functions as a hole transport layer, and the layer 720-2 functions as a hole injection layer. This layer structure allows efficient carrier injection into the light-emitting layer 711, thereby increasing the efficiency of carrier recombination within the light-emitting layer 711.

[0197] As shown in FIGS. 16C and 16D, a configuration in which a plurality of light-emitting layers (light-emitting layers 711, 712, 713) are provided between layer 720 and layer 730 is also a variation of the single structure.

[0198] As shown in Figures 16E and 16F, a configuration in which multiple light-emitting units (EL layer 790a, EL layer 790b) are connected in series via an intermediate layer (charge generating layer) 740 is referred to as a tandem structure in this specification. The tandem structure may also be referred to as a stack structure. Note that the tandem structure makes it possible to produce a light-emitting device capable of emitting light with high brightness.

[0199] 16C, light-emitting materials that emit light of the same color, or even the same light-emitting material, may be used for light-emitting layer 711, light-emitting layer 712, and light-emitting layer 713. By stacking the light-emitting layers, the luminance of emitted light can be increased.

[0200] Furthermore, different light-emitting materials may be used for the light-emitting layer 711, the light-emitting layer 712, and the light-emitting layer 713. When the light emitted from the light-emitting layer 711, the light-emitting layer 712, and the light-emitting layer 713 is complementary in color, white light is obtained. Fig. 16D shows an example in which a colored layer 795 that functions as a color filter is provided. When white light passes through the color filter, light of a desired color can be obtained.

[0201] 16E, light-emitting layers 711 and 712 may be made of light-emitting materials that emit light of the same color. Alternatively, light-emitting layers 711 and 712 may be made of light-emitting materials that emit different colors. When the light emitted by light-emitting layer 711 and the light emitted by light-emitting layer 712 are complementary colors, white light is obtained. FIG. 16F shows an example in which a colored layer 795 is further provided.

[0202] 16C, 16D, 16E, and 16F, the layer 720 and the layer 730 may have a laminated structure made up of two or more layers, as shown in FIG. 16B.

[0203] 16D, light-emitting layers 711, 712, and 713 may be made of light-emitting materials that emit light of the same color. Similarly, in FIG. 16F, light-emitting layers 711 and 712 may be made of light-emitting materials that emit light of the same color. In this case, by applying a color conversion layer instead of colored layer 795, light of a desired color different from the light-emitting material can be obtained. For example, by using a blue light-emitting material in each light-emitting layer and transmitting blue light through the color conversion layer, light with a wavelength longer than blue (e.g., red, green, etc.) can be obtained. For the color conversion layer, a fluorescent material, a phosphorescent material, or quantum dots can be used.

[0204] The light-emitting device can emit light of red, green, blue, cyan, magenta, yellow, or white, depending on the material of the EL layer 790. The color purity can be further improved by providing the light-emitting device with a microcavity structure.

[0205] A white light-emitting device may have a structure in which two or more types of light-emitting materials are contained in the light-emitting layer, or may have two or more stacked light-emitting layers containing different light-emitting materials, in which case the light-emitting materials should be selected so that the light emitted from each of the light-emitting materials has a complementary color relationship.

[0206] [Light-emitting device] Here, a specific example of the configuration of the light-emitting device will be described.

[0207] The light-emitting device has at least a light-emitting layer. The light-emitting device may further have, in addition to the light-emitting layer, a layer containing a substance with high hole-injection properties, a substance with high hole-transport properties, a hole-blocking material, a substance with high electron-transport properties, an electron-blocking material, a substance with high electron-injection properties, or a bipolar substance (a substance with high electron-transport properties and high hole-transport properties).

[0208] The light-emitting device can be made of either a low-molecular-weight compound or a high-molecular-weight compound, and may contain an inorganic compound. The layers constituting the light-emitting device can be formed by a method such as vapor deposition (including vacuum vapor deposition), transfer, printing, inkjet printing, or coating.

[0209] For example, a light emitting device can include one or more of a hole injection layer, a hole transport layer, a hole blocking layer, an electron blocking layer, an electron transport layer, and an electron injection layer.

[0210] The hole injection layer is a layer that injects holes from the anode into the hole transport layer and contains a material with high hole injection properties, such as an aromatic amine compound and a composite material containing a hole transport material and an acceptor material (electron acceptor material).

[0211] The hole transport layer is a layer that transports holes injected from the anode by the hole injection layer to the light emitting layer. The hole transport layer is a layer that contains a hole transport material. The hole transport material is a material having a concentration of 1×10 -6 cm 2 A material having a hole mobility of 1 / Vs or more is preferred. Note that other materials can also be used as long as they have a higher hole transporting property than electron transporting property. As the hole transporting material, a material having a high hole transporting property, such as a π-electron-rich heteroaromatic compound (e.g., a carbazole derivative, a thiophene derivative, a furan derivative, etc.) or an aromatic amine (a compound having an aromatic amine skeleton), is preferred.

[0212] The electron transport layer is a layer that transports electrons injected from the cathode by the electron injection layer to the light emitting layer. The electron transport layer is a layer that contains an electron transporting material. The electron transporting material is a material having a molecular weight of 1×10 -6 cm 2A substance having an electron mobility of 1 / Vs or more is preferred. Note that other substances can also be used as long as they have a higher electron transporting property than holes. Examples of electron-transporting materials that can be used include metal complexes having a quinoline skeleton, metal complexes having a benzoquinoline skeleton, metal complexes having an oxazole skeleton, and metal complexes having a thiazole skeleton, as well as oxadiazole derivatives, triazole derivatives, imidazole derivatives, oxazole derivatives, thiazole derivatives, phenanthroline derivatives, quinoline derivatives having a quinoline ligand, benzoquinoline derivatives, quinoxaline derivatives, dibenzoquinoxaline derivatives, pyridine derivatives, bipyridine derivatives, pyrimidine derivatives, and π-electron-deficient heteroaromatic compounds including nitrogen-containing heteroaromatic compounds.

[0213] The electron injection layer is a layer that injects electrons from the cathode to the electron transport layer and contains a material with high electron injection properties. Examples of the material with high electron injection properties include alkali metals, alkaline earth metals, and compounds thereof. Examples of the material with high electron injection properties include a composite material containing an electron transport material and a donor material (electron donor material).

[0214] Examples of the electron injection layer include lithium, cesium, ytterbium, lithium fluoride (LiF), cesium fluoride (CsF), calcium fluoride (CaF), 8-(quinolinolato)lithium (abbreviation: Liq), 2-(2-pyridyl)phenolatolithium (abbreviation: LiPP), 2-(2-pyridyl)-3-pyridinolatolithium (abbreviation: LiPPy), 4-phenyl-2-(2-pyridyl)phenolatolithium (abbreviation: LiPPP), and lithium oxide (LiO x The electron injection layer may be formed of an alkali metal, an alkaline earth metal, such as cesium carbonate, or a compound thereof. The electron injection layer may have a stacked structure of two or more layers. For example, the stacked structure may have a structure in which lithium fluoride is used in the first layer and ytterbium is provided in the second layer.

[0215] Alternatively, the electron injection layer may be formed using a material having electron transport properties. For example, a compound having an unshared electron pair and an electron-deficient heteroaromatic ring may be used as the material having electron transport properties. Specifically, a compound having at least one of a pyridine ring, a diazine ring (pyrimidine ring, pyrazine ring, pyridazine ring), and a triazine ring may be used.

[0216] The organic compound having an unshared electron pair preferably has a lowest unoccupied molecular orbital (LUMO) level of -3.6 eV to -2.3 eV. Generally, the highest occupied molecular orbital (HOMO) level and the LUMO level of an organic compound can be estimated by cyclic voltammetry (CV), photoelectron spectroscopy, optical absorption spectroscopy, inverse photoelectron spectroscopy, or the like.

[0217] Examples of organic compounds with lone electron pairs include 4,7-diphenyl-1,10-phenanthroline (abbreviated as BPhen), 2,9-di(naphthalen-2-yl)-4,7-diphenyl-1,10-phenanthroline (abbreviated as NBPhen), diquinoxalino[2,3-a:2',3'-c]phenazine (abbreviated as HATNA), and 2,4,6-tris[3'-(pyridin-3-yl)biphenyl-3-yl]-1,3,5-triazine (abbreviated as TmPPYTz). NBPhen has a higher glass transition temperature (Tg) and better heat resistance than BPhen.

[0218] The light-emitting layer is a layer containing a light-emitting substance. The light-emitting layer can contain one or more light-emitting substances. As the light-emitting substance, a substance that emits light of a color such as blue, purple, blue-purple, green, yellow-green, yellow, orange, or red is appropriately used. Furthermore, a substance that emits near-infrared light can also be used as the light-emitting substance.

[0219] Examples of light-emitting materials include fluorescent materials, phosphorescent materials, TADF materials, and quantum dot materials.

[0220] Examples of fluorescent materials include pyrene derivatives, anthracene derivatives, triphenylene derivatives, fluorene derivatives, carbazole derivatives, dibenzothiophene derivatives, dibenzofuran derivatives, dibenzoquinoxaline derivatives, quinoxaline derivatives, pyridine derivatives, pyrimidine derivatives, phenanthrene derivatives, and naphthalene derivatives.

[0221] Examples of phosphorescent materials include organometallic complexes (particularly iridium complexes) having a 4H-triazole skeleton, a 1H-triazole skeleton, an imidazole skeleton, a pyrimidine skeleton, a pyrazine skeleton, or a pyridine skeleton; organometallic complexes (particularly iridium complexes) having a phenylpyridine derivative having an electron-withdrawing group as a ligand; platinum complexes; and rare earth metal complexes.

[0222] The light-emitting layer may contain one or more organic compounds (host materials, assist materials, etc.) in addition to a light-emitting substance (guest material). One or more organic compounds may be a hole-transporting material or an electron-transporting material, or both. Alternatively, a bipolar material or a TADF material may be used as the one or more organic compounds.

[0223] The light-emitting layer preferably contains, for example, a phosphorescent material and a hole-transporting material and an electron-transporting material that are a combination that easily forms an exciplex. This configuration allows for efficient emission using Exciplex-Triplet Energy Transfer (ExTET), which is energy transfer from the exciplex to the light-emitting material (phosphorescent material). By selecting a combination that forms an exciplex that emits light that overlaps with the wavelength of the lowest-energy absorption band of the light-emitting material, the energy transfer becomes smooth, allowing for efficient emission. This configuration simultaneously enables high efficiency, low-voltage operation, and long life of the light-emitting device.

[0224] At least a part of the configuration examples exemplified in this embodiment and the corresponding drawings can be combined as appropriate with other configuration examples or drawings.

[0225] This embodiment mode can be implemented by appropriately combining at least a part thereof with other embodiment modes described in this specification.

[0226] (Embodiment 5) In this embodiment, a light-receiving device that can be used for a display device of one embodiment of the present invention and a display device having a light-receiving and light-emitting function will be described.

[0227] The light receiving device can be, for example, a pn-type or pin-type photodiode. The light receiving device functions as a photoelectric conversion device (also called a photoelectric conversion element) that detects light incident on the light receiving device and generates electric charges. The amount of electric charges generated by the light receiving device is determined based on the amount of light incident on the light receiving device.

[0228] In particular, it is preferable to use an organic photodiode having a layer containing an organic compound as the light-receiving device. Organic photodiodes can be easily made thin, lightweight, and large in area, and have a high degree of freedom in shape and design, making them applicable to a variety of display devices.

[0229] [Light receiving device] 17A, the light-receiving device has a layer 765 between a pair of electrodes (a lower electrode 761 and an upper electrode 762). The layer 765 has at least one active layer and may further have other layers.

[0230] 17B shows a modification of the layer 765 included in the light-receiving device shown in Fig. 17A. Specifically, the light-receiving device shown in Fig. 17B includes a layer 766 on a lower electrode 761, an active layer 767 on the layer 766, a layer 768 on the active layer 767, and an upper electrode 762 on the layer 768.

[0231] The active layer 767 functions as a photoelectric conversion layer.

[0232] When the lower electrode 761 is an anode and the upper electrode 762 is a cathode, the layer 766 includes a hole transport layer and / or an electron blocking layer. The layer 768 includes an electron transport layer and / or a hole blocking layer. When the lower electrode 761 is a cathode and the upper electrode 762 is an anode, the layers 766 and 768 have the reversed structures.

[0233] Here, in a display device according to one embodiment of the present invention, a layer shared by the light-receiving device and the light-emitting device (which may also be referred to as a continuous layer shared by the light-receiving device and the light-emitting device) may be present. Such a layer may have different functions in the light-emitting device and the light-receiving device. In this specification, components may be referred to based on their functions in the light-emitting device. For example, a hole injection layer functions as a hole injection layer in the light-emitting device and as a hole transport layer in the light-receiving device. Similarly, an electron injection layer functions as an electron injection layer in the light-emitting device and as an electron transport layer in the light-receiving device. Furthermore, a layer shared by the light-receiving device and the light-emitting device may have the same function in the light-emitting device and in the light-receiving device. A hole transport layer functions as a hole transport layer in both the light-emitting device and the light-receiving device, and an electron transport layer functions as an electron transport layer in both the light-emitting device and the light-receiving device.

[0234] Next, materials that can be used for the light-receiving device will be described.

[0235] The light-receiving device can be made of either a low-molecular-weight compound or a high-molecular-weight compound, and may contain an inorganic compound. The layers constituting the light-receiving device can be formed by a method such as vapor deposition (including vacuum vapor deposition), transfer, printing, inkjet printing, or coating.

[0236] The active layer of the light-receiving device includes a semiconductor. Examples of the semiconductor include inorganic semiconductors such as silicon and organic semiconductors containing organic compounds. In this embodiment, an example in which an organic semiconductor is used as the semiconductor of the active layer is shown. By using an organic semiconductor, the light-emitting layer and the active layer can be formed by the same method (for example, vacuum deposition), which is preferable because it allows the use of a common manufacturing device.

[0237] The active layer is made of n-type semiconductor material, such as fullerene (e.g., C 60 , C 70 Examples of the fullerene derivatives include [6,6]-phenyl-C71-butyric acid methyl ester (abbreviation: PC70BM), [6,6]-phenyl-C61-butyric acid methyl ester (abbreviation: PC60BM), 1',1'',4',4''-tetrahydro-di[1,4]methanonaphthaleno[1,2:2',3',56,60:2'',3''][5,6]fullerene-C 60 (abbreviated as ICBA) and others.

[0238] Furthermore, examples of n-type semiconductor materials include perylene tetracarboxylic acid derivatives such as N,N'-dimethyl-3,4,9,10-perylene tetracarboxylic acid diimide (abbreviation: Me-PTCDI) and 2,2'-(5,5'-(thieno[3,2-b]thiophene-2,5-diyl)bis(thiophene-5,2-diyl))bis(methane-1-yl-1-ylidene)dimalononitrile (abbreviation: FT2TDMN).

[0239] Examples of n-type semiconductor materials include metal complexes having a quinoline skeleton, metal complexes having a benzoquinoline skeleton, metal complexes having an oxazole skeleton, metal complexes having a thiazole skeleton, oxadiazole derivatives, triazole derivatives, imidazole derivatives, oxazole derivatives, thiazole derivatives, phenanthroline derivatives, quinoline derivatives, benzoquinoline derivatives, quinoxaline derivatives, dibenzoquinoxaline derivatives, pyridine derivatives, bipyridine derivatives, pyrimidine derivatives, naphthalene derivatives, anthracene derivatives, coumarin derivatives, rhodamine derivatives, triazine derivatives, and quinone derivatives.

[0240] Examples of p-type semiconductor materials for the active layer include electron-donating organic semiconductor materials such as copper(II) phthalocyanine (CuPc), tetraphenyldibenzoperiflanthene (DBP), zinc phthalocyanine (ZnPc), tin phthalocyanine (SnPc), quinacridone, and rubrene.

[0241] Examples of p-type semiconductor materials include carbazole derivatives, thiophene derivatives, furan derivatives, and compounds having an aromatic amine skeleton. Examples of p-type semiconductor materials include naphthalene derivatives, anthracene derivatives, pyrene derivatives, triphenylene derivatives, fluorene derivatives, pyrrole derivatives, benzofuran derivatives, benzothiophene derivatives, indole derivatives, dibenzofuran derivatives, dibenzothiophene derivatives, indolocarbazole derivatives, porphyrin derivatives, phthalocyanine derivatives, naphthalocyanine derivatives, quinacridone derivatives, rubrene derivatives, tetracene derivatives, polyphenylenevinylene derivatives, polyparaphenylene derivatives, polyfluorene derivatives, polyvinylcarbazole derivatives, and polythiophene derivatives.

[0242] The HOMO level of the electron-donating organic semiconductor material is preferably shallower (higher) than the HOMO level of the electron-accepting organic semiconductor material, and the LUMO level of the electron-donating organic semiconductor material is preferably shallower (higher) than the LUMO level of the electron-accepting organic semiconductor material.

[0243] It is preferable to use a spherical fullerene as the electron-accepting organic semiconductor material and a planar organic semiconductor material as the electron-donating organic semiconductor material. Molecules with similar shapes tend to aggregate together, and when molecules of the same type aggregate, the energy levels of their molecular orbitals become close, which can improve carrier transport properties.

[0244] The active layer can also contain a polymer compound, such as poly[[4,8-bis[5-(2-ethylhexyl)-2-thienyl]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl]-2,5-thiophenediyl[5,7-bis(2-ethylhexyl)-4,8-dioxo-4H,8H-benzo[1,2-c:4,5-c']dithiophene-1,3-diyl]]polymer (abbreviated as PBDB-T), which functions as a donor, or a PBDB-T derivative. For example, an acceptor material can be dispersed in PBDB-T or a PBDB-T derivative.

[0245] For example, the active layer is preferably formed by co-evaporating an n-type semiconductor and a p-type semiconductor, or may be formed by laminating an n-type semiconductor and a p-type semiconductor.

[0246] The active layer may also contain a mixture of three or more materials. For example, to expand the wavelength range, a third material may be mixed in addition to an n-type semiconductor material and a p-type semiconductor material. In this case, the third material may be a low-molecular-weight compound or a high-molecular-weight compound.

[0247] The light-receiving device may further include a layer containing a substance with high hole-transporting properties, a substance with high electron-transporting properties, or a bipolar substance (a substance with high electron-transporting properties and high hole-transporting properties) as a layer other than the active layer. Furthermore, without being limited to the above, the light-receiving device may further include a layer containing a substance with high hole-injecting properties, a hole-blocking material, a material with high electron-injecting properties, or an electron-blocking material. For the layer other than the active layer of the light-receiving device, for example, the materials that can be used in the above-mentioned light-emitting device can be used.

[0248] For example, polymer compounds such as poly(3,4-ethylenedioxythiophene) / poly(styrenesulfonic acid) (PEDOT / PSS) and inorganic compounds such as molybdenum oxide and copper iodide (CuI) can be used as hole transporting or electron blocking materials. Furthermore, inorganic compounds such as zinc oxide (ZnO) and organic compounds such as polyethyleneimine ethoxylate (PEIE) can be used as electron transporting or hole blocking materials. The light-receiving device may have, for example, a mixed film of PEIE and ZnO.

[0249] [Display device with light detection function] A display device according to one embodiment of the present invention has a display portion in which light-emitting devices are arranged in a matrix, and can display an image. Furthermore, the display portion has a matrix of light-receiving devices, and the display portion has an imaging function and / or a sensing function in addition to an image display function. The display portion can be used as an image sensor or a touch sensor. That is, by detecting light in the display portion, it is possible to capture an image or detect the proximity or contact of an object (such as a finger, a hand, or a pen).

[0250] Furthermore, in the display device of one embodiment of the present invention, the light-emitting device can be used as a light source for a sensor. In the display device of one embodiment of the present invention, when light emitted from the light-emitting device included in the display portion is reflected (or scattered) by an object, the light-receiving device can detect the reflected light (or scattered light), so that imaging or touch detection is possible even in a dark place.

[0251] Therefore, a light receiving unit and a light source are not required to be provided separately from the display device, and the number of components in the electronic device can be reduced. For example, a biometric authentication device or a capacitive touch panel for scrolling or the like is not required to be provided separately in the electronic device. Therefore, by using the display device of one embodiment of the present invention, an electronic device with reduced manufacturing costs can be provided.

[0252] Specifically, a display device according to one embodiment of the present invention has a light-emitting device and a light-receiving device in each pixel. In the display device according to one embodiment of the present invention, an organic EL device is used as the light-emitting device, and an organic photodiode is used as the light-receiving device. The organic EL device and the organic photodiode can be formed on the same substrate. Therefore, the organic photodiode can be built into a display device using an organic EL device.

[0253] In a display device having a light-emitting device and a light-receiving device in each pixel, the pixel has a light-receiving function, so that it is possible to detect contact or proximity of an object while displaying an image. For example, in addition to displaying an image using all of the sub-pixels of the display device, some of the sub-pixels can emit light as a light source and the remaining sub-pixels can display an image.

[0254] When the light receiving device is used as an image sensor, the display device can capture an image using the light receiving device. For example, the display device of the present embodiment can be used as a scanner.

[0255] For example, an image sensor can be used to capture an image for personal authentication using a fingerprint, palm print, iris, pulse shape (including vein shape and artery shape), face, or the like.

[0256] For example, an image sensor can be used to capture images of the area around the eye, the surface of the eye, or the inside of the eye (such as the fundus) of a user of a wearable device. Therefore, the wearable device can have a function to detect one or more of the user's blinking, movement of the pupil, and movement of the eyelids.

[0257] The light receiving device can also be used as a touch sensor (also called a direct touch sensor) or a near-touch sensor (also called a hover sensor, hover touch sensor, non-contact sensor, or touchless sensor).

[0258] Here, the touch sensor or near-touch sensor can detect the proximity or contact of an object (such as a finger, a hand, or a pen).

[0259] A touch sensor can detect an object when the display device and the object are in direct contact with each other. A near-touch sensor can detect an object even if the object does not touch the display device. For example, a configuration in which the display device can detect an object when the distance between the display device and the object is between 0.1 mm and 300 mm, preferably between 3 mm and 50 mm, is preferred. This configuration allows the object to operate the display device without directly touching it; in other words, it allows the display device to be operated in a non-contact (touchless) manner. This configuration reduces the risk of the display device becoming dirty or scratched, or allows the object to operate the display device without directly touching dirt (e.g., dust, viruses, etc.) adhering to the display device.

[0260] Furthermore, the display device of one embodiment of the present invention can have a variable refresh rate. For example, the refresh rate can be adjusted (for example, within a range of 1 Hz to 240 Hz) depending on the content displayed on the display device, thereby reducing power consumption. Furthermore, the drive frequency of the touch sensor or near-touch sensor may be changed depending on the refresh rate. For example, when the refresh rate of the display device is 120 Hz, the drive frequency of the touch sensor or near-touch sensor can be configured to be higher than 120 Hz (typically 240 Hz). This configuration enables low power consumption and an increased response speed of the touch sensor or near-touch sensor.

[0261] The display device 105 shown in FIGS. 17C to 17E includes, between a substrate 351 and a substrate 359, a layer 353 having a light-receiving device, a functional layer 355, and a layer 357 having a light-emitting device.

[0262] The functional layer 355 has a circuit for driving the light-receiving device and a circuit for driving the light-emitting device. The functional layer 355 may be provided with one or more of a switch, a transistor, a capacitor, a resistor, a wiring, a terminal, etc. Note that when the light-emitting device and the light-receiving device are driven by a passive matrix method, a configuration without a switch or a transistor may be used.

[0263] 17C , when a finger 352 touches the display device 105, the light emitted by the light-emitting device in the layer 357 having the light-emitting device is reflected by the finger 352, and the reflected light is detected by the light-receiving device in the layer 353 having the light-receiving device. This makes it possible to detect that the finger 352 has touched the display device 105.

[0264] Furthermore, as shown in FIGS. 17D and 17E, the display device may have a function of detecting or capturing an image of an object that is close to (not in contact with) the display device.

[0265] This embodiment mode can be implemented by appropriately combining at least a part thereof with other embodiment modes described in this specification.

[0266] (Embodiment 6) In this embodiment, a display panel according to one embodiment of the present invention will be described.

[0267] One embodiment of the present invention is a display panel that can be enlarged by arranging multiple display panels so that they partially overlap. Of the two overlapping display panels, at least the display panel located on the display surface side (upper side) has a portion that is adjacent to the display section and transmits visible light. Pixels of the lower display panel and the portion of the upper display panel that transmits visible light are arranged to overlap. This allows images displayed on the two display panels to be displayed continuously and seamlessly when viewed from the display surface side (in a plan view).

[0268] For example, a display panel according to one embodiment of the present invention is a stacked panel including a first display panel and a second display panel. The first display panel includes a first region, which includes a first pixel and a second pixel. The second display panel includes a second region, a third region, and a fourth region. The second region includes a third pixel, which has a function of transmitting visible light and a function of blocking visible light. The second pixel of the first display panel and the third region of the second display panel overlap each other. The aperture ratio of the second pixel is preferably larger than that of the first pixel.

[0269] The display device including the light-emitting element and the light-receiving element, as exemplified above, can be used for one or both of the first display panel and the second display panel. In other words, it can be said that at least one of the first pixel, the second pixel, and the third pixel has a light-emitting element and a light-receiving element.

[0270] More specifically, for example, the following configuration can be adopted.

[0271] [Configuration example 1] 18A is a schematic top view of a display panel 500 included in the display panel of one embodiment of the present invention. The display panel 500 can have the same structure as the display device 100 described in the above embodiment.

[0272] The display panel 500 includes a display section 501, a region 510 adjacent to the display section 501 that transmits visible light, and a region 520 that has a portion that blocks visible light.

[0273] Here, even when the display panel 500 is a standalone unit, it is possible to display an image on the display unit 501. Furthermore, even when the display panel 500 is a standalone unit, it is possible to capture an image using the display unit 501.

[0274] The region 510 may be provided with, for example, a pair of substrates constituting the display panel 500 and a sealant for sealing a display element sandwiched between the pair of substrates. In this case, a material that is translucent to visible light is used for the members provided in the region 510. The width of the region 510 is represented by W.

[0275] The region 520 is provided with, for example, wirings electrically connected to pixels included in the display portion 501. In addition to such wirings, a driver circuit (scanning line driver circuit, signal line driver circuit, etc.) for driving the pixels or a circuit such as a protection circuit may be provided. The region 520 also includes a region provided with terminals (also referred to as connection terminals) electrically connected to external terminals or wiring layers, or wirings electrically connected to the terminals.

[0276] Fig. 18B is a schematic top view showing an example of the configuration of a display panel 550 having the display panel 500 shown in Fig. 18A. Fig. 18B shows an example in which the display panel 550 has three display panels 500.

[0277] In the present embodiment, when describing display panels, components included in display panels, or components related to display panels, alphabets are added after their reference numerals. Unless otherwise specified, the reference numeral "a" is added to the display panel and its components arranged at the bottom (opposite the display surface) of multiple display panels, some of which are overlapped with each other, and the reference numerals of one or more display panels and their components arranged above it are added with alphabets in alphabetical order. Unless otherwise specified, even when describing a configuration including multiple display panels, the reference numerals are omitted when describing matters common to each display panel or component.

[0278] The display panel 550 shown in FIG. 18B includes a display panel 500a, a display panel 500b, and a display panel 500c.

[0279] Display panel 500b is disposed so that a portion thereof overlaps the upper side (display surface side) of display panel 500a. Specifically, display section 501a of display panel 500a and region 510b of display panel 500b that transmits visible light overlap, and display section 501a of display panel 500a and region 520b of display panel 500b that shields visible light do not overlap.

[0280] Furthermore, display panel 500c is disposed such that a portion thereof overlaps the upper side (display surface side) of display panel 500b. Specifically, display section 501b of display panel 500b and region 510c of display panel 500c that transmits visible light overlap, and display section 501b of display panel 500b and region 520c of display panel 500c that shields visible light do not overlap.

[0281] Since region 510b that transmits visible light is superimposed on display unit 501a, the entire display unit 501a can be viewed from the display surface side. Similarly, since region 510c is superimposed on display unit 501b, the entire display unit 501b can be viewed from the display surface side. Therefore, the region in which display units 501a, 501b, and 501c are seamlessly arranged can be used as display unit 551 of display panel 550.

[0282] The display panel 550 can expand the display section 551 by the number of display panels 500. In this case, by using a display panel having an imaging function (i.e., a display panel having pixels each having a light-emitting element and a light-receiving element) for all the display panels 500, the entire area of ​​the display section 551 can be used as an imaging area.

[0283] [Configuration example 2] Although FIG. 18B shows a configuration in which a plurality of display panels 500 are arranged overlapping in one direction, a plurality of display panels 500 may be arranged overlapping in two directions, that is, the vertical direction and the horizontal direction.

[0284] Fig. 19A is a schematic top view showing an example of a display panel 500 having a different shape of region 510 from that of Fig. 18A. In the display panel 500 shown in Fig. 19A, regions 510 that transmit visible light are arranged along two sides of a display unit 501.

[0285] Fig. 19B is a schematic perspective view of a display panel 550 in which two display panels 500 shown in Fig. 19A are arranged vertically and two horizontally. Fig. 19C is a schematic perspective view of display panel 550 as viewed from the opposite side to the display surface side.

[0286] 19B and 19C, a region along the short side of display portion 501a of display panel 500a overlaps with a portion of region 510b of display panel 500b. Also, a region along the long side of display portion 501a of display panel 500a overlaps with a portion of region 510c of display panel 500c. Also, region 510d of display panel 500d overlaps with a region along the long side of display portion 501b of display panel 500b and a region along the short side of display portion 501c of display panel 500c.

[0287] Therefore, as shown in FIG. 19B, a region in which display units 501a, 501b, 501c, and 501d are seamlessly arranged can be used as display unit 551 of display panel 550.

[0288] Here, it is preferable that a pair of substrates used in the display panel 500 are made of a flexible material, thereby making the display panel 500 flexible. In this way, as shown in Figures 19B and 19C, for example, a portion of the display panel 500a can be curved and arranged so as to overlap the lower side of the display portion 501b of the adjacent display panel 500b.

[0289] Furthermore, by providing flexibility to each display panel 500, display panel 500b can be gently curved so that the height of the upper surface of display portion 501b of display panel 500b matches the height of the upper surface of display portion 501a of display panel 500a. This makes it possible to align the heights of the display portions except for the vicinity of the area where display panels 500a and 500b overlap, thereby improving the display quality of images displayed on display portion 551 of display panel 550.

[0290] Although the relationship between the display panel 500a and the display panel 500b has been described above as an example, the same applies to the relationship between two adjacent display panels.

[0291] Furthermore, it is preferable that the thickness of the display panel 500 is thin in order to reduce the step between two adjacent display panels 500. For example, it is preferable that the thickness of the display panel 500 is 1 mm or less, preferably 300 μm or less, and more preferably 100 μm or less.

[0292] A substrate may also be provided to protect the display unit 551 of the display panel 550. In this case, the substrate may be provided for each display panel, or one substrate may be provided across multiple display panels.

[0293] Although a configuration in which four rectangular display panels 500 are stacked is shown here, an extremely large stacked panel can be created by increasing the number of display panels 500. Furthermore, by changing the arrangement of the multiple display panels 500, the contour shape of the display section of the stacked panel can be made into various shapes, such as a non-rectangular shape, a circle, an ellipse, or a polygon. Furthermore, by arranging the display panels 500 three-dimensionally, a stacked panel having a display section with a three-dimensional shape, such as a cylindrical shape, a spherical shape, or a hemispherical shape, can be realized.

[0294] 20A is a cross-sectional view illustrating a structural example of a display panel 650 of one embodiment of the present invention. The display panel 650 can have a structure in which a display panel 600a and a display panel 600b are sandwiched between a substrate 601a and a substrate 601b, and an adhesive layer 619 is filled between the substrates.

[0295] Substrates 601a and 601b may be made of polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyacrylonitrile resin, acrylic resin, polyimide resin, polymethyl methacrylate resin, polycarbonate (PC) resin, polyethersulfone (PES) resin, polyamide resins (nylon, aramid, etc.), polysiloxane resin, cycloolefin resin, polystyrene resin, polyamideimide resin, polyurethane resin, polyvinyl chloride resin, polyvinylidene chloride resin, polypropylene resin, polytetrafluoroethylene (PTFE) resin, ABS resin, cellulose nanofiber, etc. Adhesive layer 619 may be made of various curable adhesives such as photocurable adhesives (e.g., ultraviolet curable), reactive curable adhesives, thermosetting adhesives, and anaerobic adhesives. Examples of such adhesives include epoxy resin, acrylic resin, silicone resin, phenolic resin, polyimide resin, imide resin, PVC (polyvinyl chloride) resin, PVB (polyvinyl butyral) resin, and EVA (ethylene vinyl acetate) resin. In particular, a material with low moisture permeability such as epoxy resin is preferable. A two-component mixed resin may also be used. An adhesive sheet or the like may also be used.

[0296] The display panel 600a and the display panel 600b can have the same structure as the display device 100 described in the above embodiment. Similarly to the display panel 500, the display panel 600 preferably has flexibility.

[0297] 20B is an enlarged view of the configuration shown in FIG. 20A. As shown in FIG. 20B, display panel 600a and display panel 600b are bonded together by adhesive layer 618 so that an edge of the display panel overlaps with an edge of the display panel. Specifically, display panel 600a and display panel 600b are bonded together by adhesive layer 618 so that an edge of the display section of display panel 600a overlaps with an edge of the display section of display panel 600b. In other words, display panel 650 can be configured by stacking display panel 600a and display panel 600b. The adhesive layer 618 can be made of the same material as the adhesive layer 619.

[0298] The display panel 650 can be configured to have a large size similar to the display panel 600 by stacking a plurality of display panels 600. The display panel 650 may also be configured to have three or more display panels 600 stacked one on top of the other. By increasing the number of display panels 600 included in the display panel 650, the display panel 650 can be made even larger.

[0299] At least a part of the configuration examples exemplified in this embodiment and the corresponding drawings can be combined as appropriate with other configuration examples or drawings.

[0300] This embodiment mode can be implemented by appropriately combining at least a part thereof with other embodiment modes described in this specification. [Example]

[0301] Example 1 In this example, results of manufacturing a display device according to one embodiment of the present invention will be described. The display device manufactured in this example is a kawara-type multidisplay.

[0302] <Display panel> First, the details of the display panel used in the display device manufactured in this example will be shown.

[0303] FIG. 21A shows a schematic diagram of the display panel of this embodiment. The display panel shown in FIG. 21A is an active matrix organic EL display with a light-emitting section 1250 having a diagonal size of 13.5 inches, 1280 × 720 effective pixels, and a resolution of 108 ppi. The display panel has a built-in demultiplexer (DeMUX) 1253 that functions as a source driver. The display panel also has a built-in scan driver 1255. Two sides of the light-emitting section 1250 are in contact with a region 1251 that transmits visible light. Leading wiring 1257 is provided around the remaining two sides.

[0304] The display panel uses channel-etched transistors using c-axis aligned crystalline oxide semiconductor (CAAC-OS), which is made of In-Ga-Zn oxide.

[0305] The light-emitting element used was a tandem (stacked) organic EL element that emits white light. The light-emitting element has a top-emission structure, and the light from the light-emitting element is extracted to the outside of the display panel through a color filter.

[0306] Fig. 21B shows a schematic diagram of a display device in which two display panels are arranged horizontally, and Fig. 21C shows a schematic diagram of the display device shown in Fig. 21B taken along the dashed-dotted XY cross section.

[0307] The display device of this embodiment is configured by overlapping multiple display panels so that the non-display areas between the display areas are small. Specifically, a light-transmitting layer 1103 is provided between a visible light-transmitting area 1251 of the upper display panel and a light-emitting section 1250 of the lower display panel.

[0308] On two sides of the display panel, no structures that block visible light, such as wiring or drivers, are arranged from the end of the light-emitting section 1250 to the end of the display panel, forming a visible light-transmitting region 1251. The width of the visible light-transmitting region 1251 of the display panel is narrow, and the thickness T of the visible light-transmitting region 1251 (which can also be said to be the thickness of one display panel) is very thin. Therefore, in the display device of this embodiment, although there are parts where the display panels overlap, the step that occurs on the display surface side is very small, and the seams are configured to be inconspicuous.

[0309] The four display panels are flexible. For example, as shown in FIG. 21C, the lower display panel can be curved near the FPC 1373a, and a portion of the lower display panel and a portion of the FPC 1373a can be arranged below the light-emitting portion 1250 of the upper display panel adjacent to the FPC 1373a. As a result, the FPC 1373a can be arranged without physically interfering with the rear surface of the upper display panel. This allows other display panels to be arranged on all four sides of the display panel, making it easy to increase the display area.

[0310] In this example, an adhesive film having adhesive layers on both sides of the base material was used as the light-transmitting layer 1103. By using this adhesive film, the two display panels that make up the display device can be detachably attached to each other. The adhesive layer on one side of the light-transmitting layer 1103 is adsorbed to the substrate 1211a, and the adhesive layer on the other side of the light-transmitting layer 1103 is adsorbed to the substrate 1201b.

[0311] 21B, the light-transmitting layer 1103 has not only a portion overlapping with the region 1251 that transmits visible light, but also a portion overlapping with the light-emitting section 1250. In FIG. 21C, the light-transmitting layer 1103 overlaps the entire region 1251 that transmits visible light from the edge of the substrate 1201b, and further overlaps with a portion of the region 1155b that includes the display element. Note that the light-transmitting layer 1103 is not provided in the curved portion of the display panel near the portion where the FPC 1373a is connected in FIG. 21C. However, depending on the thickness or flexibility of the light-transmitting layer 1103, the light-transmitting layer 1103 may be provided in the curved portion of the display panel.

[0312] Each display panel was fabricated by bonding a substrate and an element layer together with an adhesive layer. For example, as shown in FIG. 21C , a substrate 1201a and an element layer 1153a, a substrate 1211a and an element layer 1153a, a substrate 1201b and an element layer 1153b, and a substrate 1211b and an element layer 1153b are bonded together with an adhesive layer 1157. The element layer 1153a has a region 1155a including a display element and a region 1156a including wiring electrically connected to the display element. Similarly, the element layer 1153b has a region 1155b including a display element and a region 1156b including wiring electrically connected to the display element.

[0313] <Display device> 22A and 22B are diagrams illustrating a display device in which three display panels shown in FIG. 21A are arranged horizontally.

[0314] 21A to 21C are arranged horizontally. Display panel 1100A overlaps part of display panel 1100B, and display panel 1100B overlaps part of display panel 1100C, thereby enabling seamless display on display panels 1100A, 1100B, and 1100C. Note that while FIG. 22A shows a structure in which the display surfaces of display panels 1100A, 1100B, and 1100C are curved to be concave, it is also possible to curve the display surfaces to be convex.

[0315] Fig. 22B is a schematic bird's-eye view of display device 1110 in which three display panels are arranged horizontally, as shown in Fig. 22A. In display device 1110, display panels 1100A, 1100B, and 1100C are attached to one surface of support 1376. Support 1376, display panels 1100A, 1100B, and 1100C are fixed in a curved shape with a curvature radius R of 900 mm, providing a design that provides a high sense of immersion when viewing.

[0316] FIG. 23 is a photograph showing the appearance of the display device 1110 described in FIG. 22B.

[0317] 23, the overlapping portions of the three display panels of the display device 1110 are inconspicuous, and the seams are hardly visible. Therefore, because the three display panels of the display device 1110 are curved with a curvature radius R=900 mm and the seams are hardly visible, a display device that provides a very immersive feeling when viewing has been fabricated. [Explanation of symbols]

[0318] 50: shading device, 51: shading portion, 52: storage portion, 53: display portion, 54: driving means, 55: display panel, 56: reflective layer, 57: spring portion, 58: support portion, 59: roof portion, 60: vehicle, 61: front window, 62: rearview mirror, 63: handle, 64: dashboard, 65: opening, 66: operation portion, 67: image output portion, 68: image processing portion, 69: transmission portion, 70: pillar, 71: movable portion, 72: guide portion, 73A: fixed region, 73B: fixed region, 74A: winding portion, 74B: winding portion, 76: shaft portion, 77: rotation mechanism, 78: bearing portion, 91: image, 92: Image, 93: image, 94: image, 100: display device, 101: substrate, 110: light-emitting element, 110a: light-emitting element, 110b: light-emitting element, 110B: light-emitting element, 110c: light-emitting element, 110G: light-emitting element, 110R: light-emitting element, 111: pixel electrode, 111B: pixel electrode, 111C: connection electrode, 111G: pixel electrode, 111R: pixel electrode, 112: organic layer, 112B: organic layer, 112G: organic layer, 112R: organic layer, 113: common electrode, 114: common layer, 121: protective layer, 124a: pixel, 124b: pixel, 125: insulating layer, 126: resin layer, 128: layer, 14 0: connection portion, 150: pixel, 202: transistor, 204: connection portion, 209: transistor, 210: transistor, 211: insulating layer, 212: insulating layer, 214: insulating layer, 215: insulating layer, 218: insulating layer, 221: conductive layer, 222a: conductive layer, 222b: conductive layer, 223: conductive layer, 225: insulating layer, 228: connection portion, 231: semiconductor layer, 231i: channel formation region, 231n: low resistance region, 242: connection layer, 351: substrate, 352: finger, 353: layer, 355: functional layer, 357: layer, 359: substrate, 400: display device, 411a: conductive layer, 411b: Conductive layer, 411c: conductive layer, 412B: EL layer, 412G: EL layer, 413: common electrode, 414: common layer, 416: protective layer, 421: insulating layer, 422: resin layer, 424: layer, 430b: light-emitting element, 430c: light-emitting element, 442: adhesive layer, 451: substrate, 452: substrate, 453: substrate, 454: substrate, 455: adhesive layer, 462: display unit, 464: circuit, 465: wiring, 466: conductive layer, 472: FPC, 473: IC, 500: display panel, 500a: display panel, 500b: display panel, 500c: display panel, 500d: display panel, 501: display unit,501a: display unit, 501b: display unit, 501c: display unit, 501d: display unit, 510: region, 510b: region, 510c: region, 510d: region, 520: region, 520b: region, 520c: region, 550: display panel, 551: display unit, 600: display panel, 600a: display panel, 600b: display panel, 601a: substrate, 601b: substrate, 618: adhesive layer, 619: adhesive layer, 650: display panel, 711: light-emitting layer, 712: light-emitting layer, 713: light-emitting layer, 720: layer, 720-1: layer, 720-2: layer, 730: layer, 730-1: layer, 730-2: layer, 761: lower electrode, 762: upper electrode, 765: layer, 766: layer, 76 7: active layer, 768: layer, 790: EL layer, 790a: EL layer, 790b: EL layer, 791: lower electrode, 792: upper electrode, 795: colored layer, 1100A: display panel, 1100B: display panel, 1100C: display panel, 1103: light-transmitting layer, 1110: display device, 1153a: element layer, 1153b: element layer, 1155a: region, 1155b: region, 1156a: region, 1156b: region, 1157: adhesive layer, 1201a: substrate, 1201b: substrate, 1211a: substrate, 1211b: substrate, 1250: light-emitting section, 1251: region, 1255: scan driver, 1257: routing wiring, 1373a: FPC, 1376: support,

Claims

[Claim 1] A shading device for use in a vehicle, The light blocking device has a light blocking portion and a storage portion, the light-shielding portion has a display portion on an inner surface of the vehicle, The storage section has a transmission section, When the light-shielding portion is housed inside the housing portion, the transmission portion and the display portion overlap each other. Shading device.

Images