Display device

Abstract

To provide a display device that is suitable for increasing in size, a display device in which display unevenness is suppressed, or a display device that can display an image along a curved surface.SOLUTION: A display device includes a first display panel and a second display panel each including a pair of substrates. The first display panel and the second display panel each include a first region which can transmit visible light, a second region which can block visible light, and a third region which can perform display. The third region of the first display panel and the first region of the second display panel overlap each other. The third region of the first display panel and the second region of the second display panel do not overlap each other.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] One aspect of the present invention relates to a display device. Another aspect of the present invention relates to an electronic device including a display device. Regarding equipment.

[0002] Note that one embodiment of the present invention is not limited to the above technical fields. The technical field of one aspect relates to an article, a method, or a manufacturing method. One aspect of the present invention is a process, machine, manufacture, or composition. Therefore, the present invention more specifically disclosed herein The technical field of one embodiment of the present invention is a semiconductor device, a display device, a light-emitting device, a lighting device, a power storage device, Examples of the memory device include a memory device, a method for driving the memory device, or a method for manufacturing the memory device. Cut. [Background technology]

[0003] In recent years, there has been a demand for larger display devices. For example, in the case of home television sets (television (also called television receiver), digital signage (Digital Signage gnage (digital signage) and PID (Public Information Display In addition, the larger the digital signage and PID, the The amount of information that can be provided can be increased, and when used for advertising, the larger the image, the more people will be attracted to it. It is expected that this will be more noticeable and will increase the effectiveness of advertising.

[0004] Also, in the case of portable devices, there is a demand for larger display devices. Consideration is being given to increasing the amount of information displayed by enlarging the area, thereby improving the visibility of the display. It has been done.

[0005] Examples of display devices typically include light-emitting devices equipped with organic EL (Electro Luminescence ) elements, light-emitting diodes (LEDs: Light Emitting Diodes), etc., liquid crystal display devices, and electronic paper that performs display by electrophoresis and the like.

[0006] For example, the basic structure of an organic EL element is a layer containing a light-emitting organic compound sandwiched between a pair of electrodes . By applying a voltage to this element, light emission can be obtained from the light-emitting organic compound. A display device to which such an organic EL element is applied does not require a backlight, which was necessary in liquid crystal display devices , etc., and thus can realize a thin, lightweight, high-contrast, and low-power consumption display device. For example, an example of a display device using an organic EL element is disclosed in Patent Document 1.

[0007] In addition, Patent Document 2 discloses a flexible active matrix type light-emitting device provided with a transistor, which is a switching element, and an organicEL element on a film substrate .

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0009] ​​​One aspect of the present invention aims to provide a display device suitable for increasing in size. Or One aspect of the present invention aims to provide a display device with reduced display unevenness. Or, one aspect of the present invention aims to provide a display device capable of displaying along a curved surface as one of the problems.

[0010] Or, one aspect of the present invention aims to provide an electronic device with excellent listability. Or, with respect to portability one aspect of the present invention aims to provide an electronic device with excellent portability.

[0011] Or, one aspect of the present invention aims to provide a novel display device. Or, a novel electronic device is provided as one of the problems.

[0012] Note that the description of these problems does not prevent the existence of other problems. One aspect of the present invention is not required to solve all of these problems. Also, problems other than the above will be naturally revealed from the description in the specification and the like, and problems other than the above can be extracted from the description in the specification and the like.

Means for Solving the Problems

[0013] One aspect of the present invention is a display device having a first display panel and a second display panel, wherein each of the first display panel and the second display panel has a pair of substrates, and each of the first display panel and the second display panel has a first region, a second region, and a third region. The first region has a region capable of transmitting visible light, the second region has a region capable of blocking visible light, the third region has a region capable of performing display, and the third region of the first display panel and the first region of the second display panel are mutually ​It has an area provided so as to overlap, and the third area of the first display panel and the second display panel have areas provided so as not to overlap with each other.

[0014] Also, in the above, each of the first display panel and the second display panel has a third area having a light-emitting element, and each of the first display panel and the second display panel has wiring provided along a part of the outer periphery of the third area in the second area, and each of the first display panel and the second display panel has a sealing material provided along another part of the outer periphery of the third area in the first area. The first area preferably has an area with a width of 1 mm or more and 100 mm or less.

[0015] Another aspect of the present invention is a display device having a first display panel, a second display panel, and a third display panel. Each of the first display panel, the second display panel, and the third display panel includes a pair of substrates. Each of the first display panel, the second display panel, and the third display panel has a first area, a second area, and a third area. The first area has an area that can transmit visible light, the second area has an area that can block visible light, the third area has an area that can perform display, and each of the first display panel, the second display panel, and the third display panel has a light-emitting element in the third area. Each of the first display panel, the second display panel, and the third display panel has wiring provided along a part of the outer periphery of the third area in the second area. Each of the first display panel, the second display panel, and the third display panel has a sealing material provided along another part of the outer periphery of the third area in the first area. Each of the first In the field, it has a sealing material provided along another part of the outer periphery of the third region, and the first region has a region with a width of 1 mm or more and 100 mm or less. The third region of the first display panel and the first region of the second display panel are provided so as to overlap each other and have a region . The third region of the first display panel and the second region of the second display panel are provided so as not to overlap each other and have a region . The third region of the first display panel and the first region of the third display panel are provided so as to overlap each other and have a region . The third region of the first display panel and the second region of the third display panel are provided so as not to overlap each other and have a region . The third region of the second display panel and the second region of the third display panel are provided so as not to overlap each other and have a region .

[0016] Also, each of the pair of substrates preferably has flexibility.

[0017] Also, the first display panel has an FPC. The FPC and the second region of the first display panel have an overlapping region. The FPC and the third region of the second display panel have an overlapping region. The FPC is preferably provided on the side opposite to the display surface side of the second display panel.

[0018] Furthermore, it has a layer. The layer has a resin material. The layer and the third region of the first display panel have an overlapping region. The layer and the third region of the second display panel have an overlapping region. The layer has a portion with a first refractive index. The substrate on the display surface side of the pair of substrates has a portion with a second refractive index. The difference between the first refractive index and the second refractive index is preferably 10% or less. ​​​​​

[0019] In addition, another aspect of the present invention has a touch sensor in addition to any of the above display devices. It is a display module.

[0020] In addition, another aspect of the present invention is a display module having any of the above display devices, and has a first wireless module and a second wireless module. The first wireless module has a function of extracting a first signal from the received wireless signal and a function of supplying the first signal to the first display panel. The second wireless module has a function of extracting a second signal from the received wireless signal and a function of supplying the second signal to the second display panel. It has the function of

[0021] In addition, another aspect of the present invention is a building having any of the above display devices or any display module, having columns or walls, and the display device or display module is provided on the column or wall.

[0022] In addition, another aspect of the present invention is an electronic device having a first display panel, a second display panel, a third display panel, a first support, and a second support. The second display panel is flexible. Each of the first display panel, the second display panel, and the third display panel has a first region, a second region, and a third region. The first region has a function of transmitting visible light. The second region has a function of blocking visible light. The third region has a function of performing display. The third region of the first display panel and the first region of the second display panel have a first overlapping portion with each other. The third region of the second display panel and the third display The first region of the panel has a second part that overlaps with each other. The first display panel has a region supported by a first support, and the third display panel has a region supported by a second support. The first support and the second support can be deformed into a deployed state where the first display panel, the second display panel, and the third display panel are located in substantially the same plane, and a folded state where the first display panel and the third display panel are located so as to have an overlapping region. In the folded state, the third region of the second display panel has a bent region, and the first part and the second part have regions that do not bend, which is characterized. Moreover, in the above, the first display panel has a first FPC. The first FPC and the second region of the first display panel have an overlapping region. The first FPC and the third

[0023] region of the second display panel have an overlapping region. The first FPC is preferably located on the side opposite to the display surface side of the second display panel. Moreover, in the above, the second display panel has a second FPC. The second FPC and the second region of the second display panel have an overlapping region. The second FPC and the third region of the second display panel have an overlapping region. The second FPC is preferably located on the side opposite to the display surface side of the third display panel.

[0024] Moreover, in the above, the first display panel, the second display panel, and the third display panel preferably each have a touch sensor. At this time, the touch sensor preferably has a transistor and a capacitor. Also, at this time, the transistor preferably has a channel shape and a capacitor. Also, at this time, the transistor preferably has a channel shape and a capacitor. Also, at this time, the transistor preferably has a channel shape

[0025] Moreover, in the above, the first display panel, the second display panel, and the third display panel preferably each have a touch sensor. At this time, the touch sensor preferably has a transistor and a capacitor. Also, at this time, the transistor preferably has a channel shape The semiconductor to be formed preferably includes an oxide semiconductor. Effect of the Invention

[0026] According to one embodiment of the present invention, a display device suitable for large size can be provided. According to one aspect of the present invention, a display device in which display unevenness is suppressed can be provided. It is possible to provide a display device capable of displaying information in accordance with the above. Alternatively, an electronic device with excellent portability can be provided.

[0027] Alternatively, a novel display device (display panel) or electronic device can be provided. The description of the effect does not preclude the existence of other effects. However, it is not necessary for the invention to have all of these effects. Effects other than these may be as described in the specification, drawings, etc. It is obvious from the description of the specification, drawings, claims, etc. It is possible to extract other effects from the description above. [Brief description of the drawings]

[0028]

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Embodiments for Carrying Out the Invention

[0029] The embodiments will be described in detail with reference to the drawings. However, the present invention is not limited to the following description, and those skilled in the art can easily understand that its form and details can be variously changed without departing from the spirit and scope of the present invention. Therefore, the present invention is not construed as being limited to the content described in the following embodiments.

[0030] In the configuration of the invention described below, for the same part or parts having similar functions, the same reference numerals are commonly used among different drawings, and repeated explanations thereof are omitted. Also, when referring to similar functions, the hatching pattern may be the same and may not be particularly labeled with reference numerals.

[0031] Note that in each drawing described in this specification, the size of each component, the thickness of each layer, or the area may be exaggerated for clarity. Therefore, it is not necessarily limited to that scale.

[0032] Note that ordinal numbers such as "first" and "second" in this specification etc. are attached to avoid confusion of components and are not numerically limiting.

[0033] (Embodiment 1) In this embodiment, a configuration example and an application example of a display device according to an aspect of the present invention will be described with reference to the drawings.

[0034] [Configuration Example 1] FIG. 1(A) is a schematic top view of a display panel 100 included in a display device according to an aspect of the present invention.

[0035] The display panel 100 includes a display area 101, an area 110 adjacent to the display area 101 that transmits visible light, and an area 120 that blocks visible light. Also, in FIG. 1(A), an example is shown in which an FPC (Flexible Printed Circuit) 112 is provided on the display panel 100.

[0036] The display area 101 includes a plurality of pixels arranged in a matrix and can display an image. One or more display elements are provided in each pixel. As the display element, instead ​​​​​​As a table, a light-emitting element such as an organic EL element or a liquid crystal element can be used.

[0037] In the region 110, for example, a pair of substrates constituting the display panel 100 and the pair of substrates may be provided with a sealing material or the like for sealing the display element sandwiched therebetween. At this time, For the members provided in the region 110, a material having translucency with respect to visible light is used.

[0038] In the region 120, for example, wirings are provided that are electrically connected to the pixels included in the display region 101. In addition to such wirings, a drive circuit (such as a scanning line drive circuit, a signal line drive circuit, etc.) for driving the pixels may be provided. Further, in the region 120, a terminal (also referred to as a connection terminal) that is electrically connected to the FPC 112 and wirings that are electrically connected to the terminal may be provided.

[0039] The display device 10 according to one aspect of the present invention includes a plurality of the above-described display panels 100. In FIG. 1(B ), a schematic top view of the display device 10 including three display panels is shown.

[0040] Hereinafter, in order to distinguish between each display panel, between the components included in each display panel, and between the components related to each display panel, an alphabet will be appended after the reference numeral for explanation. Also, unless otherwise specified, for the display panel or component arranged on the lowermost side (opposite to the display surface side ), "a" will be appended after the reference numeral, and for one or more display panels and their components arranged in order above it, alphabets "b" and later will be appended in alphabetical order after the reference numeral. Also, unless otherwise specified, even when describing a configuration including a plurality of display panels, for each display panel or component ​ When explaining common matters, the alphabet will be omitted.

[0041] The display device 10 shown in Fig. 1(B) includes a display panel 100a, a display panel 100b, and a display panel 100c. The display panel 100c is provided.

[0042] A part of the display panel 100b is overlapped and disposed above (on the display surface side) the display panel 100a. Specifically, a part of the display area 101a of the display panel 100a overlaps with the area 110b that transmits visible light of the display panel 100b, and the display area 101a of the display panel 100a and the area 120b that blocks visible light of the display panel 100b do not overlap. It is arranged so that it does not overlap. Moreover, a part of the display panel 100c is overlapped and disposed above (on the display surface side) the display panel 100b. Specifically, a part of the display area 101b of the display panel 100b overlaps with the area 110c that transmits visible light of the display panel 100c, and the display area 101b of the display panel 100b and the area 120c that blocks visible light of the display panel 100c do not overlap. It is arranged so that it does not overlap. Since the area 110b that transmits visible light overlaps on the display area 101a, the entire display area 101a can be visually recognized from the display surface side. Similarly, the entire display area 101b can be visually recognized from the display surface side because the area 110c overlaps. Therefore, it is possible to set the area where the display areas 101a, 101b, and 101c are arranged continuously (the area surrounded by the broken line in Fig. 1(B)) as the display area 11 of the display device 10. It becomes possible.

[0043] Also, a part of the display panel 100c is overlapped and disposed above (on the display surface side) the display panel 100b. Specifically, a part of the display area 101b of the display panel 100b overlaps with the area 110c that transmits visible light of the display panel 100c, and the display area 101b of the display panel 100b and the area 120c that blocks visible light of the display panel 100c do not overlap. It is arranged so that they do not overlap. The display area 101b and the area 120c that blocks visible light of the display panel 100c do not overlap. It is arranged so that they do not overlap.

[0044] Since the area 110b that transmits visible light overlaps on the display area 101a, the entire display area 101a can be visually recognized from the display surface side. Similarly, the entire display area 101b can be visually recognized from the display surface side because the area 110c overlaps. Therefore, the display areas 101a, 101b, and 101c can be continuously arranged (the area surrounded by the broken line in Fig. 1(B)) as the display area 11 of the display device 10. It is possible. The area (the area surrounded by the broken line in Fig. 1(B)) where the display areas 101a, 101b, and 101c are continuously arranged is set as the display area 11 of the display device 10. It becomes possible.

[0045] ​ Here, the width W of the region 110 shown in FIG. 1(A) is 0.5 mm or more and 150 mm or less, preferably 1 mm or more and 100 mm or less, more preferably 2 mm or more and 50 mm or less. Since the region 110 has the function as a sealing region, the larger the width W of the region 110 is, the longer the distance between the end face of the display panel 100 and the display region 101 can be, and it becomes possible to effectively suppress the intrusion of impurities such as water from the outside into the display region 101. In particular, in this configuration example, since the region 110 is provided adjacent to the display region 101, it is important to set the width W of the region 110 to an appropriate value. For example, when an organic EL element is used as the display element, by setting the width W of the region 110 to 1 mm or more, the deterioration of the organic EL element can be effectively suppressed. In addition, in other portions other than the region 110, it is preferable to set the distance between the end of the display region 101 and the end face of the display panel 100 to be within the above range.

[0046] [Configuration Example 2] In FIG. 1(B), a configuration in which a plurality of display panels 100 are stacked in one direction is shown, but a plurality of display panels 100 may be stacked in two directions, the vertical direction and the horizontal direction.

[0047] FIG. 2(A) shows an example of a display panel 100 in which the shape of the region 110 is different from that in FIG. 1(A). In the display panel 100 shown in FIG. 2(A), the region 110 is arranged along two adjacent sides of the display region 101.

[0048] FIG. 2(B) shows a perspective schematic view of the display device 10 in which two display panels 100 shown in FIG. 2(A) are arranged vertically and two horizontally. FIG. 2(C) is opposite to the display surface side of the display device 10. ​It is a schematic perspective view when seen from the opposite side.

[0049] In FIGS. 2(B) and (C), a region along the short side of the display area 101a of the display panel 100a overlaps with a part of the region 110b of the display panel 100b. Also, a region along the long side of the display area 101a of the panel 100a overlaps with a part of the region 1 10c of the display panel 100c. Further, the region 110d of the display panel 100d overlaps with a region along the long side of the display area 101b of the panel 100b and a region along the short side of the display area 101c of the panel 100c.

[0050] Therefore, as shown in FIG. 2(B), the display area 11 of the display device 10 can be defined as an area where the display areas 101a, 101b, display areas 101c, and 101d are arranged seamlessly.

[0051] Here, it is preferable that a pair of substrates used for the display panel 100 are made of a flexible material, so that the display panel 100 has flexibility. By doing so, for example, as shown in the display panel 100a in FIGS. 2(B), ( C), when the FPC 112a or the like is provided on the display surface side, a part of the display panel 100a on the side where the FPC 112a is provided can be curved, and the FPC 11 2a can be arranged so as to overlap with the lower side of the display area 101b of the adjacent display panel 100b up to. As a result, the FPC 112a can be arranged without physically interfering with the back surface of the display panel 100b. Also, when the display panel 100a and the display panel 100b are overlapped and adhered, since it is not necessary to consider the thickness of the FPC 112a, the display panel ... ... ​The height between the upper surface of the region 110b of the display panel 100b and the upper surface of the display region 101a of the display panel 100a As a result, the difference in height between the edge of the display panel 100b located on the display area 101a can be reduced. This can prevent the part from being visually recognized.

[0052] Furthermore, by making each display panel 100 flexible, the display area of ​​the display panel 100b can be The height of the upper surface of the display area 101b is the height of the upper surface of the display area 101a of the display panel 100a. The display panel 100b can be gently curved to match the height of the display. Therefore, except for the area near the overlapping area of ​​the display panel 100a and the display panel 100b, each display area The height of the display area 11 of the display device 10 can be adjusted to be uniform, and the display quality of the image displayed in the display area 11 of the display device 10 can be improved. can be increased.

[0053] In the above, the relationship between the display panels 100a and 100b has been described as an example. The same is true between the two display panels.

[0054] In order to reduce the step between two adjacent display panels 100, For example, the thickness of the display panel 100 is set to 1 mm or less, preferably 3 It is preferable to set the thickness to 00 μm or less, and more preferably 100 μm or less.

[0055] FIG. 3A is a schematic top view of the display device 10 shown in FIGS. 2B and 2C, as viewed from the display surface side. It is.

[0056] Here, visible light (for example, 400 nm to 700 nm) in the region 110 of one display panel 100 If the transmittance of the display to light with wavelengths of 100 nm or less cannot be increased sufficiently, Depending on the number of display panels 100 overlapping 101, the brightness of the displayed image may decrease. There is a risk. For example, in region A in Fig. 3(A), one display panel 100c is superimposed on the display region 10 1a of display panel 100a. Also, in region B, a total of two display panels 10 0, namely display panels 100c and 100d, are overlapping on the display region 101b of display panel 10 0b. And in region C, a total of three display panels 1 00, namely display panel 100b, display panel 100c, and display panel 100d, are overlapping on the display region 101a of display panel 10 00.

[0057] In such a case, it is preferable to perform correction to locally increase the gradation of pixels on the image data to be displayed, according to the number of display panels 100 superimposed on the display region 101. By doing so, it becomes possible to suppress the degradation of the display quality of the image displayed in the display region 11 of the display device 10.

[0058] Also, by shifting the position of the display panel 100 arranged at the top, it is also possible to reduce the number of display panels 100 overlapping on the display region 101 of the lower display panel 10 0.

[0059] Fig. 3(B) shows a case where the display panels 100c and 100d arranged on the display panels 100a and 100b are relatively shifted in one direction (X direction) by a distance of the width W of the region 110. At this time, there are two types of regions: region D where one display panel 100 is superimposed on the display region 101 of one display panel 100, and region E where two display panels 100 are superimposed.

[0060] Note that the display panel 100 may be relatively shifted in a direction (Y direction) orthogonal to the X direction and arranged.

[0061] Note that when the display panel 100 located at the upper part is relatively shifted and arranged, the outline of the area combining the display areas 101 of the display panels 100 has a shape different from a rectangular shape. Therefore, when making the display area 11 of the display device 10 rectangular as shown in FIG. 3(B), the display device 10 may be driven so as not to display an image in the display area 101 of the display panel 100 located outside this. At this time, considering the number of pixels in the area where no image is displayed, more pixels than the number obtained by dividing the total number of pixels of the rectangular display area 11 by the number of display panels 100 may be provided in the display area 101 of the display panel 100.

[0062] Note that in the above, the distance when relatively shifting each display panel 100 is an integer multiple of the width W of the area 110, but it is not limited to this, and it may be appropriately set in consideration of the shape of the display panel 100 and the shape of the display area 11 of the display device 10 combined with this.

[0063] The display device 10 according to one aspect of the present invention can connect the display panels 100 without limit and can expand the size of the display area 11 without limit. For example, when used for household use, the size of the display area 11 may be 20 inches or more and 100 inches or less in diagonal, preferably 40 inches or more and 90 inches or less in diagonal, etc. Also, when applied to a portable type electronic device such as a tablet terminal, the size of the display area 11 may be 5 inches or more and 30 inches or less in diagonal, preferably 10 inches or more and 20 inches or less, etc. Also, for a large commercial signboard When used for etc., the size of the display area 11 can be 80 inches or more, 100 inches or more, 200 inches or more.

[0064] Also, the display device 10 according to one aspect of the present invention can increase the resolution (number of pixels) of the display area 11 without an upper limit. For example, the resolution of the display area 11 can be adjusted to a standardized resolution such as HD (number of pixels 1280×7 20), FHD (number of pixels 1920×1080), WQHD (number of pixels 2560×1440) , WQXGA (number of pixels 2560×1600), 4K (number of pixels 3840×2160), 8K (number of pixels 7680×4320), etc. In particular, it is preferable to use a display device with a resolution of 4K, more preferably 8K or higher. In personal use such as portable and home use, the higher the resolution, the higher the fineness, and it becomes possible to enhance the sense of presence and depth. Also, when used for commercial display boards, etc., the higher the resolution, the more information can be displayed.

[0065] [Cross-sectional configuration example] FIG. 4(A) is a schematic cross-sectional view when two display panels 100 are bonded together. In FIG. 4(A ), FPC112a is connected to the display surface side of the display panel 100a, and FPC112b is connected to the display surface side of the display panel 100b, respectively.

[0066] Also, as shown in FIG. 4(B), FPC112a and FPC112b may be connected to the side opposite to the display surface side of the display panel 1 00a or the display panel 100b. With such a configuration, the end portion of the display panel 100a arranged on the lower side can be made into the display panel Since it can be attached to the back surface of 100b, these adhesive areas can be increased, and the mechanical strength of the bonded portion can be enhanced.

[0067] Further, as shown in FIGS. 4(C) and 4(D), a resin layer 131 having translucency may be provided to cover the upper surfaces of the display panel 100a and the display panel 100b. Specifically, it is preferable to provide the resin layer 131 so as to cover each display area of the display panel 100a and the display panel 100b and the area where the display panel 100a and the display panel 100b overlap.

[0068] By providing the resin layer 131 across a plurality of display panels 100, the mechanical strength of the display device 10 can be enhanced. Further, if the surface of the resin layer 131 is formed to be flat, the display quality of the image displayed in the display area 11 can be enhanced. For example, by using a coating device such as a slit coater, a curtain coater, a gravure coater, a roll coater, or a spin coater, a resin layer 131 with high flatness can be formed.

[0069] Further, it is preferable that the resin layer 131 has a difference in refractive index from the substrate used on the display surface side of the display panel 100 of 20% or less, preferably 10% or less, more preferably 5% or less. By using such a resin layer 131 having a refractive index, the refractive index difference between the display panel 100 and the resin can be reduced, and light can be efficiently extracted to the outside. Further, by providing such a resin layer 131 so as to cover the stepped portion between the display panel 100a and the display panel 100b, the stepped portion becomes difficult to be visually recognized, and thus the display quality of the image displayed in the display area 11 of the display device 10 can be enhanced.

[0070] As the material used for the resin layer 131, for example, an organic resin film such as an epoxy resin, an aramid resin, an acrylic resin, a polyimide resin, a polyamide resin, or a polyamideimide resin can be used. This is possible.

[0071] Also, as shown in FIGS. 5(A) and 5(B), it is preferable to provide a protective substrate 132 on the display device 10 via the resin layer 131. At this time, the resin layer 131 may function as an adhesive layer that adheres the display device 10 and the protective substrate 132. The protective substrate 132 can not only protect the surface of the display device 10 but also enhance the mechanical strength of the display device 10. As the protective substrate 132, a material having translucency is used at least in the region overlapping the display region 11. Also, the protective substrate 132 may have light-shielding properties so that regions other than the region overlapping the display region 11 are not visible.

[0072] The protective substrate 132 may have a function as a touch panel. Also, when the display panel 100 has flexibility and can be curved, it is preferable that the protective substrate 132 also has flexibility.

[0073] Also, the protective substrate 132 is a substrate used on the display surface side of the display panel 100, or the difference in refractive index from the resin layer 131 is preferably 20% or less, more preferably 10% or less, and even more preferably 5% or less.

[0074] As the protective substrate 132, a film-like plastic substrate such as polyimide (PI), aramid, polyethylene terephthalate (PET), polyethersulfone (PES), polyethylene naphthalate (PEN), polycarbonate (PC), nylon, or poly ​ Polyether ether ketone (PEEK), polysulfone (PSF), polyetherimide ( PEI), polyarylate (PAR), polybutylene terephthalate (PBT), silicone resin, or a glass substrate can be used. Also, the protective substrate 132 preferably has flexibility. Further, the protective substrate 132 may also include fibers and the like, for example, prepregs. Also, the protective substrate 132 is not limited to a resin film, and may be a transparent nonwoven fabric obtained by continuously processing pulp into a sheet, a sheet containing artificial spider silk fibers containing a protein called fibroin, a composite obtained by mixing these with a resin, a laminate of a nonwoven fabric made of cellulose fibers having a fiber width of 4 nm or more and 100 nm or less and a resin film, or a laminate of a sheet containing artificial spider silk fibers and a resin film.

[0075] Also, as shown in FIGS. 5(C) and (D), a resin layer 133 is provided on the surface opposite to the display surface of the display panel 100a and the display panel 100 b, and a protective substrate 134 is provided via the resin layer 133. In this way, by sandwiching the display panels 100a and 100b between two protective substrates, the mechanical strength of the display device 10 can be further increased. Also, by making the resin layer 131 and the resin layer 133 have the same thickness and using materials of the same thickness for the protective substrate 132 and the protective substrate 134, a plurality of display panels 100 can be arranged at the central portion of these laminates. For example, when bending a laminate including the display panel 100, by positioning the display panel 100 at the central portion in the thickness direction, the lateral stress applied to the display panel 100 due to bending can be relaxed, and breakage can be prevented. . ​​​​​​​​

[0076] Also, as shown in FIGS. 5(C) and 5(D), the resin layer 133 and the protective substrate 134 disposed on the back side of the display panel 100a and the display panel 100 b preferably have openings for taking out the FPC 112a. At this time, if the resin layer 133 is provided so as to cover a part of the FPC 112 a, the mechanical strength at the connection portion between the display panel 100a and the FPC 112a can be increased, and problems such as the FPC 112a peeling off can be suppressed. Similarly, it is preferable to provide the resin layer 133 so as to cover a part of the FPC 112b. Note that the resin layer 133 and the protective substrate 134 provided on the side opposite to the display surface do not necessarily have to have translucency, and a material that absorbs or reflects visible light may be used. If the same material is commonly used for the resin layer 133 and the resin layer 131, or the protective substrate 134 and the protective substrate 132, the manufacturing cost can be reduced.

[0077] Note that the resin layer 133 and the protective substrate 134 provided on the side opposite to the display surface do not necessarily have to have translucency, and a material that absorbs or reflects visible light may be used. If the same material is commonly used for the resin layer 133 and the resin layer 131, or the protective substrate 134 and the protective substrate 132, the manufacturing cost can be reduced. layer 133 and the resin layer 131, or the protective substrate 134 and the protective substrate 132, the manufacturing cost can be reduced. Note that the resin layer 133 and the protective substrate 134 provided on the side opposite to the display surface do not necessarily

[0078] [Configuration Example of Display Area] Next, a configuration example of the display area 101 of the display panel 100 will be described. FIG. 6(A) is a schematic top view of the enlarged region P in FIG. 2(A), and FIG. 6(B) is a schematic top view of the enlarged region Q. As shown in FIG. 6(A), a plurality of pixels 141 are arranged in a matrix in the display area 101.

[0079] In the case of the display panel 100 capable of full-color display using three colors of red, blue, and green, the pixel 141 is a pixel capable of displaying any one of the above three colors. Alternatively, pixels capable of displaying white or yellow in addition to the above three colors may be provided. The region including the pixel 141 corresponds to the display area 101. In the case of the display panel 100 capable of full-color display using three colors of red, blue, and green, the pixel 141 is a pixel capable of displaying any one of the above three colors. Alternatively, pixels capable of displaying white or yellow in addition to the above three colors may be provided. The region including the pixel 141 corresponds to the display area 101. The region including the pixel 141 corresponds to the display area 101.

[0080] One pixel 141 has wiring 142a and wiring 142b electrically connected thereto. Each of the multiple wiring 142a intersects with wiring 142b and is electrically connected to circuit 143a. Also, the multiple wiring 142b is electrically connected to circuit 143b. One of circuit 143 a and circuit 143b can be a circuit that functions as a scanning line driving circuit, and the other can be a circuit that functions as a signal line driving circuit. Note that either one or both of circuit 143a and circuit 1 43b may not be provided.

[0081] In FIG. 6(A), multiple wiring 145 that is electrically connected to circuit 143a or circuit 143b is provided. Wiring 145 is electrically connected to FPC 123 in a region not shown and has a function of supplying an external signal to circuit 143a and circuit 143b.

[0082] In FIG. 6(A), the region including circuit 143a, circuit 143b, and the multiple wiring 145 corresponds to region 120 that shields visible light.

[0083] In FIG. 6(B), the region outside the outermost provided pixel 141 corresponds to region 110 that transmits visible light. Region 110 does not have members such as pixel 141, wiring 142a, and wiring 142 b that shield visible light. Note that if a part of pixel 141, wiring 142a, or wiring 142b has light transmittance with respect to visible light, it may extend to region 110. and be provided.

[0084] Here, the width W of region 110 is the outermost one among the regions 110 provided in display panel 100. It may also refer to a narrow width. When the width W of the display panel 100 varies depending on the location, the shortest length can be used as the width W. Note that in FIG. 6(B), the case where the distance from the pixel 141 to the end face of the substrate (i.e., the width W of the region 110) is the same in the vertical and horizontal directions of the drawing is shown. The shortest length can be used as the width W. Note that in FIG. 6(B), the case where the distance from the pixel 141 to the end face of the substrate (i.e., the width W of the region 110) is the same in the vertical and horizontal directions of the drawing is shown. The shortest length can be used as the width W. Note that in FIG. 6(B), the case where the distance from the pixel 141 to the end face of the substrate (i.e., the width W of the region 110) is the same in the vertical and horizontal directions of the drawing is shown. The shortest length can be used as the width W. Note that in FIG. 6(B), the case where the distance from the pixel 141 to the end face of the substrate (i.e., the width W of the region 110) is the same in the vertical and horizontal directions of the drawing is shown.

[0085] FIG. 6(C) is a schematic cross-sectional view taken along the cut line A1 - A2 in FIG. 6(B). The display panel 100 has a pair of substrates (substrate 151, substrate 152) each having translucency. The substrate 151 and the substrate 152 are adhered by an adhesive layer 153. Here, the substrate on the side where the pixel 141, the wiring 142b, etc. are formed is defined as the substrate 151. FIG. 6(C) is a schematic cross-sectional view taken along the cut line A1 - A2 in FIG. 6(B). The display panel 100 has a pair of substrates (substrate 151, substrate 152) each having translucency. The substrate 151 and the substrate 152 are adhered by an adhesive layer 153. Here, the substrate on the side where the pixel 141, the wiring 142b, etc. are formed is defined as the substrate 151. FIG. 6(C) is a schematic cross-sectional view taken along the cut line A1 - A2 in FIG. 6(B). The display panel 100 has a pair of substrates (substrate 151, substrate 152) each having translucency. The substrate 151 and the substrate 152 are adhered by an adhesive layer 153. Here, the substrate on the side where the pixel 141, the wiring 142b, etc. are formed is defined as the substrate 151. FIG. 6(C) is a schematic cross-sectional view taken along the cut line A1 - A2 in FIG. 6(B). The display panel 100 has a pair of substrates (substrate 151, substrate 152) each having translucency. The substrate 151 and the substrate 152 are adhered by an adhesive layer 153. Here, the substrate on the side where the pixel 141, the wiring 142b, etc. are formed is defined as the substrate 151.

[0086] As shown in FIGS. 6(B) and (C), when the pixel 141 is located at the outermost end of the display region 101, the width W of the region 110 that transmits visible light is the length from the end of the substrate 151 or substrate 152 to the end of the pixel 141. As shown in FIGS. 6(B) and (C), when the pixel 141 is located at the outermost end of the display region 101, the width W of the region 110 that transmits visible light is the length from the end of the substrate 151 or substrate 152 to the end of the pixel 141. As shown in FIGS. 6(B) and (C), when the pixel 141 is located at the outermost end of the display region 101, the width W of the region 110 that transmits visible light is the length from the end of the substrate 151 or substrate 152 to the end of the pixel 141.

[0087] Note that the end of the pixel 141 refers to the end of the member that blocks visible light among the members included in the pixel 141 and is located at the outermost end. Or, when a light-emitting element (also referred to as an organic EL element) having a layer containing a light-emitting organic compound between a pair of electrodes is used as the pixel 141, the end of the pixel 141 may be any of the end of the lower electrode, the end of the layer containing the light-emitting organic compound, and the end of the upper electrode. Note that the end of the pixel 141 refers to the end of the member that blocks visible light among the members included in the pixel 141 and is located at the outermost end. Or, when a light-emitting element (also referred to as an organic EL element) having a layer containing a light-emitting organic compound between a pair of electrodes is used as the pixel 141, the end of the pixel 141 may be any of the end of the lower electrode, the end of the layer containing the light-emitting organic compound, and the end of the upper electrode. Note that the end of the pixel 141 refers to the end of the member that blocks visible light among the members included in the pixel 141 and is located at the outermost end. Or, when a light-emitting element (also referred to as an organic EL element) having a layer containing a light-emitting organic compound between a pair of electrodes is used as the pixel 141, the end of the pixel 141 may be any of the end of the lower electrode, the end of the layer containing the light-emitting organic compound, and the end of the upper electrode. Note that the end of the pixel 141 refers to the end of the member that blocks visible light among the members included in the pixel 141 and is located at the outermost end. Or, when a light-emitting element (also referred to as an organic EL element) having a layer containing a light-emitting organic compound between a pair of electrodes is used as the pixel 141, the end of the pixel 141 may be any of the end of the lower electrode, the end of the layer containing the light-emitting organic compound, and the end of the upper electrode. Note that the end of the pixel 141 refers to the end of the member that blocks visible light among the members included in the pixel 141 and is located at the outermost end. Or, when a light-emitting element (also referred to as an organic EL element) having a layer containing a light-emitting organic compound between a pair of electrodes is used as the pixel 141, the end of the pixel 141 may be any of the end of the lower electrode, the end of the layer containing the light-emitting organic compound, and the end of the upper electrode.

[0088] FIG. 7(A) shows the case where the position of the wiring 142a is different from that in FIG. 6(B). FIG. 7(B) is a schematic cross-sectional view taken along the cut line B1 - B2 in FIG. 7(A), and FIG. 7(C) is a schematic cross-sectional view taken along the cut line C1 - C2 in FIG. 7(A). FIG. 7(A) shows the case where the position of the wiring 142a is different from that in FIG. 6(B). FIG. 7(B) is a schematic cross-sectional view taken along the cut line B1 - B2 in FIG. 7(A), and FIG. 7(C) is a schematic cross-sectional view taken along the cut line C1 - C2 in FIG. 7(A). FIG. 7(A) shows the case where the position of the wiring 142a is different from that in FIG. 6(B). FIG. 7(B) is a schematic cross-sectional view taken along the cut line B1 - B2 in FIG. 7(A), and FIG. 7(C) is a schematic cross-sectional view taken along the cut line C1 - C2 in FIG. 7(A).

[0089] As shown in FIGS. 7(A), (B), and (C), when the wiring 142a is located at the outermost edge of the display area 101, the width W of the region 110 that transmits visible light is the length from the end of the substrate 151 or substrate 152 to the end of the wiring 142a. When the wiring 142a has light-transmitting properties with respect to visible light, the region where the wiring 142a is provided may be included in the region 110.

[0090] Here, when the density of the pixels provided in the display area 101 of the display panel 100 is high, misalignment may occur when two display panels 100 are bonded together.

[0091] FIG. 8(A) shows the positional relationship when viewed from the display surface side between the display area 101a of the display panel 100a provided at the bottom and the display area 101b of the display panel 100b provided at the top. FIG. 8(A) shows the vicinity of the corners of the display area 101a and the display area 101b, respectively. A part of the display area 101a is covered by the region 110b.

[0092] In the example shown in FIG. 8(A), the case where the adjacent pixels 141a and 141b are relatively displaced in one direction ( Y direction) is shown. The arrow shown in the figure indicates the direction in which the display panel 100a is displaced with respect to the display panel 100b. Also, in the example shown in FIG. 8(B), the case where the adjacent pixels 141a and 141b are relatively displaced in both the vertical and horizontal directions (X direction and Y direction) is shown.

[0093] In the examples shown in FIGS. 8(A) and 8(B), the distance of displacement in the horizontal direction and the distance of displacement in the vertical direction ​​​​​​are each smaller than one pixel. In such a case, for the image data of the image to be displayed on either the display area 101a or the display area 101b, it is possible to maintain the display quality by multiplying by a correction corresponding to the distance of the shift. Specifically, in the case of a shift where the distance between pixels is small , correct so as to lower the gradation (luminance) of the pixels, and in the case of a shift where the distance between pixels is large , correct so as to increase the gradation (luminance) of the pixels. Also, when two pixels overlap, correct the image data by shifting it by one row so that the pixel located at the bottom is not driven.

[0094] In FIG. 8(C), an example is shown in which the pixels 141a and 141b that should have been adjacent are shifted relative to each other by a distance of one pixel or more in one direction (Y direction). Thus, when a shift of a distance of one pixel or more occurs, drive so as not to display the protruding pixel (the pixel with hatching added). Note that the same applies when the direction of the shift is the X direction.

[0095] When bonding a plurality of display panels 100, it is preferable to provide markers or the like for alignment on each display panel 100 so as to suppress misalignment. Alternatively, convex portions and concave portions may be formed on the surface of the display panel 100, and the convex portions and the concave portions may be fitted (mated) in the region where the two display panels 100 overlap.

[0096] Also, in consideration of the accuracy of misalignment, it is preferable to arrange more pixels in the display area 101 of the display panel 100 than the pixels to be used in advance. For example, at least one of the pixel columns along the scanning lines or the pixel columns along the signal lines is one column or more, preferably three It is preferable to provide more than a certain number of columns, more preferably 5 columns or more, in addition to the pixel columns used for display. Preferably.

[0097] [Application Example 1] By increasing the number of display panels 100 of one aspect of the present invention, it is possible to increase the area of the display area 11 without an upper limit. Therefore, the display device 10 can be suitably used for applications that display large images such as digital signage and PID. In FIG. 9(A), an example of applying the display device 10 of one aspect of the present invention to a pillar 15 and a wall 16 is shown. By using a flexible display panel as the display panel 100 used in the display device 10, it becomes possible to install the display device 10 along a curved surface. Here, as the number of display panels 100 used in the display device 10 increases, the scale of the wiring board for supplying signals for driving each of them increases. Furthermore, the larger the area of the display device 10, the longer the wiring required, so signal delay is likely to occur, which may have an adverse effect on the display quality.

[0098] In FIG. 9(A), an example of applying the display device 10 of one aspect of the present invention to a pillar 15 and a wall 16 is shown. By using a flexible display panel as the display panel 100 used in the display device 10, it becomes possible to install the display device 10 along a curved surface. Here, as the number of display panels 100 used in the display device 10 increases, the scale of the wiring board for supplying signals for driving each of them increases. Furthermore, the larger the area of the display device 10, the longer the wiring required, so signal delay is likely to occur, which may have an adverse effect on the display quality.

[0099] Therefore, it is preferable that each of the plurality of display panels 100 included in the display device 10 is provided with a wireless module that supplies a signal for driving the display panel 100. In FIG. 9(B), an example of a cross-section when the display device 10 is installed on the surface of a cylindrical pillar 15 is shown. The display device 10 including a plurality of display panels 100 is disposed between the interior member 21 and the exterior member 22 and is curved along the surface of the pillar 15. Here, as the number of display panels 100 used in the display device 10 increases, the scale of the wiring board for supplying signals for driving each of them increases. Furthermore, the larger the area of the display device 10, the longer the wiring required, so signal delay is likely to occur, which may have an adverse effect on the display quality. Therefore, it is preferable that each of the plurality of display panels 100 included in the display device 10 is provided with a wireless module that supplies a signal for driving the display panel 100.

[0100] Therefore, it is preferable that each of the plurality of display panels 100 included in the display device 10 is provided with a wireless module that supplies a signal for driving the display panel 100. In FIG. 9(B), an example of a cross-section when the display device 10 is installed on the surface of a cylindrical pillar 15 is shown. The display device 10 including a plurality of display panels 100 is disposed between the interior member 21 and the exterior member 22 and is curved along the surface of the pillar 15.

[0101] In FIG. 9(B), an example of a cross-section when the display device 10 is installed on the surface of a cylindrical pillar 15 is shown. The display device 10 including a plurality of display panels 100 is disposed between the interior member 21 and the exterior member 22 and is curved along the surface of the pillar 15. Here, as the number of display panels 100 used in the display device 10 increases, the scale of the wiring board for supplying signals for driving each of them increases. Furthermore, the larger the area of the display device 10, the longer the wiring required, so signal delay is likely to occur, which may have an adverse effect on the display quality.

[0102] One display panel 100 is electrically connected to the wireless module 150 via the FPC 112. It is provided. The display panel 100 is supported on the upper surface side of the support member 23 provided between the interior member 21 and the exterior member 22, and the wireless module 150 is arranged on the lower surface side of the support member 23. The display panel 100 and the wireless module 150 are electrically connected by the FPC 112 through the opening provided in the support member 23.

[0103] Also, FIG. 9(B) shows a configuration in which a light-shielding portion 26 is provided in a part of the exterior member 22. By providing the light-shielding portion 26 so as to cover an area outside the display area of the display device 10, the area can be made invisible to the observer.

[0104] The wireless module 150 receives the wireless signal 27 transmitted from the antenna 25 provided inside or outside the pillar 15. It also has a function of extracting a signal for driving the display panel 100 from the wireless signal 27 and supplying this signal to the display panel 100. As signals for driving the display panel 100, there are a power supply potential, a synchronization signal (clock signal), an image signal, etc. For example, each wireless module 150 is assigned a unique number. Also, the wireless signal 27 transmitted from the antenna 25 includes a signal for designating the unique number and a signal for driving the display panel 10 0. Each wireless module 150 receives a signal for driving the display panel 100 when the unique number included in the wireless signal 27 matches its own unique number, and supplies this to the display panel 100 via the FPC 112, so that different images can be displayed on each display panel 10

[0105] 0. 0. ​​​​​​

[0106] The wireless module 150 may be an active wireless module powered by the wireless signal 27, or may be a passive wireless module with a built-in battery or the like. In the case of a passive wireless module, the power supply and reception (also referred to as non-contact power transmission, contactless power transmission, or wireless power supply) using an electromagnetic induction method, a magnetic field resonance method, a radio wave method, etc. may be used to configure the built-in battery to be rechargeable. With such a configuration, even for the large display device 10, there is no delay in the signal for driving each display panel 100, and the display quality can be improved. Also, since it is driven by the wireless signal 27, when installing the display device 10 on a wall or a pillar, construction such as passing wiring through the wall or pillar is unnecessary, and the display device 10 can be easily installed in any place. Similarly, it is easy to change the installation location of the display device 10. Note that in the above, one wireless module 150 is connected to one display panel 100, but one wireless module 150 may be connected to two or more display panels 100.

[0107] For example, a display device according to an aspect of the present invention may have at least two display panels, and further includes at least a first wireless module that extracts a first signal from the received wireless signal and supplies this to the first display panel, and a second wireless module that extracts a second signal from the wireless signal and supplies this to the second display panel.

[0108]

[0109]

[0110] [Application Example 2] ​​​​​​​​​​​Hereinafter, an example of an electronic device to which the display device 10 according to one aspect of the present invention is applied will be described.

[0111] FIGS. 10(A) and (B) show perspective views of the electronic device 50. The electronic device 50 includes a support 51 a, a support 51b, a display panel 100a, a display panel 100b, and a display panel 100c and has.

[0112] The support 51a and the support 51b are rotatably connected by a hinge 52. Also the display panel 100a is supported by the support 51a. Also, the display panel 100c is supported by the support 51b. Among the three display panels, at least the display panel 10 0a and the display panel 100b located between the display panel 100c have flexibility. The table The display panels 100a and 100c may not have flexibility, but by making them the same configuration, mass productivity can be improved.

[0113] FIG. 10(A) shows a state (referred to as a deployed state) in which the display panels 100a, 100b, and 100c are each located in substantially the same plane. Also, FIG. 10(B) shows a state (referred to as a folded state) in which the display panels 100a and 100c are positioned so as to overlap each other. The supports 51a and 51b of the electronic device 50 can be reversibly deformed between a deployed state and a folded state. state and a folded state.

[0114] Each display panel included in the electronic device 50 preferably includes a touch sensor. Touch As the method of the sensor, various methods such as a capacitance method, a resistive film method, a surface acoustic wave method, an infrared method, and an optical method can be used. In particular, it is preferable to use the capacitance method 。 Further, as the touch sensor, an active matrix type touch sensor including a capacitor and a transistor is preferable. Specific configuration examples of the touch sensor and the touch panel including the touch sensor will be described in the following embodiments.

[0115] In addition, it is preferable that the display device included in the electronic device 50 is supported by each support so as to slide. At this time, it is preferable that the display device is supported by each support so as not to move in the thickness direction. At this time, it is preferable that the display device slides in the bending direction among the directions parallel to the display surface and is supported by each support so as not to move in a direction perpendicular thereto. By using such a support method, for example, when the display device is deformed from a flat state to a bent state, the displacement of the position generated in the display device according to the distance from the neutral plane to the display panel can be compensated by the sliding operation. As a result, it is possible to suppress the display device from being damaged due to stress applied thereto. In addition, one of the plurality of supports and the display device may be fixed so as not to slide. Further, the display device may have elasticity in a part thereof. By a part of the display device expanding and contracting, the above-mentioned displacement can be compensated. In addition, the bent portion of the display device may be fixed to each support so that the display device bends in a state where the display device is flat. By giving the display device flexibility, the above-mentioned displacement can be compensated.

[0116] The support method of the display device included in the electronic device 50 and each support is not particularly limited. For example, a method of sandwiching the display device with two members processed so as to form a groove portion in which the display device fits can be used to support the display device so as to slide. In addition, between the display device and each​​​​​ When fixing to the support, for example, methods such as adhesion, fixing with screws, etc., mechanically fixing by members, etc. can be mentioned. For example, a method of mechanically fixing with the display device sandwiched between members can be mentioned.

[0117] In the folded state shown in FIG. 10(B), the display panel 100b has a bent region so that the display area has a curved surface. Here, it is preferable that the overlapping regions of the display panel 100a and the display panel 100b, and the overlapping regions of the display panel 100b and the display panel 100c are not located in the bent region. In particular, among the visible light transmitting regions 110a, 110b, and 110c of each display panel, it is preferable that the strip-shaped portions provided in the direction perpendicular to the bending direction of the display device are not located in the bent region. Since the overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off, so by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. In the folded state shown in FIG. 10(B), the display panel 100b has a bent region so that the display area has a curved surface. Here, it is preferable that the overlapping regions of the display panel 100a and the display panel 100b, and the overlapping regions of the display panel 100b and the display panel 100c are not located in the bent region. In particular, among the visible light transmitting regions 110a, 110b, and 110c of each display panel, it is preferable that the strip-shaped portions provided in the direction perpendicular to the bending direction of the display device are not located in the bent region. Since the overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off, so by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. In the folded state shown in FIG. 10(B), the display panel 100b has a bent region so that the display area has a curved surface. Here, it is preferable that the overlapping regions of the display panel 100a and the display panel 100b, and the overlapping regions of the display panel 100b and the display panel 100c are not located in the bent region. In particular, among the visible light transmitting regions 110a, 110b, and 110c of each display panel, it is preferable that the strip-shaped portions provided in the direction perpendicular to the bending direction of the display device are not located in the bent region. Since the overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off, so by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. In the folded state shown in FIG. 10(B), the display panel 100b has a bent region so that the display area has a curved surface. Here, it is preferable that the overlapping regions of the display panel 100a and the display panel 100b, and the overlapping regions of the display panel 100b and the display panel 100c are not located in the bent region. In particular, among the visible light transmitting regions 110a, 110b, and 110c of each display panel, it is preferable that the strip-shaped portions provided in the direction perpendicular to the bending direction of the display device are not located in the bent region. Since the overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off, so by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. In the folded state shown in FIG. 10(B), the display panel 100b has a bent region so that the display area has a curved surface. Here, it is preferable that the overlapping regions of the display panel 100a and the display panel 100b, and the overlapping regions of the display panel 100b and the display panel 100c are not located in the bent region. In particular, among the visible light transmitting regions 110a, 110b, and 110c of each display panel, it is preferable that the strip-shaped portions provided in the direction perpendicular to the bending direction of the display device are not located in the bent region. Since the overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off, so by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. In the folded state shown in FIG. 10(B), the display panel 100b has a bent region so that the display area has a curved surface. Here, it is preferable that the overlapping regions of the display panel 100a and the display panel 100b, and the overlapping regions of the display panel 100b and the display panel 100c are not located in the bent region. In particular, among the visible light transmitting regions 110a, 110b, and 110c of each display panel, it is preferable that the strip-shaped portions provided in the direction perpendicular to the bending direction of the display device are not located in the bent region. Since the overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off, so by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. The overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions. Therefore, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off. Therefore, by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. The overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions. Therefore, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off. Therefore, by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. The overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions. Therefore, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off. Therefore, by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. The overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions. Therefore, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off. Therefore, by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved. The overlapping region of the two display panels is thick and may be inferior in flexibility compared to other regions. Therefore, by arranging so as to avoid the bent portion, the display surface can be formed into a smooth curved surface shape. Also, when repeating deformation on the portion where the two display panels are adhered, there is a risk that they will peel off. Therefore, by arranging this portion so as to avoid the bent portion, the reliability of the electronic device can be improved.

[0118] The electronic device 50 according to one aspect of the present invention has a configuration in which a display device including a plurality of display panels is supported by two supports. The display device can be deformed such as bent. For example, it is possible to bend the display panel 100b so that the display surface faces inward (inward bending) or bend it so that the display surface faces outward (outward bending). The electronic device 50 according to one aspect of the present invention is excellent in portability in the folded state of the display device and has a seamless appearance in the unfolded state. The electronic device 50 according to one aspect of the present invention has a configuration in which a display device including a plurality of display panels is supported by two supports. The display device can be deformed such as bent. For example, it is possible to bend the display panel 100b so that the display surface faces inward (inward bending) or bend it so that the display surface faces outward (outward bending). The electronic device 50 according to one aspect of the present invention is excellent in portability in the folded state of the display device and has a seamless appearance in the unfolded state. The electronic device 50 according to one aspect of the present invention has a configuration in which a display device including a plurality of display panels is supported by two supports. The display device can be deformed such as bent. For example, it is possible to bend the display panel 100b so that the display surface faces inward (inward bending) or bend it so that the display surface faces outward (outward bending). The electronic device 50 according to one aspect of the present invention is excellent in portability in the folded state of the display device and has a seamless appearance in the unfolded state. The electronic device 50 according to one aspect of the present invention has a configuration in which a display device including a plurality of display panels is supported by two supports. The display device can be deformed such as bent. For example, it is possible to bend the display panel 100b so that the display surface faces inward (inward bending) or bend it so that the display surface faces outward (outward bending). The electronic device 50 according to one aspect of the present invention is excellent in portability in the folded state of the display device and has a seamless appearance in the unfolded state. The electronic device 50 according to one aspect of the present invention is excellent in portability in the folded state of the display device and has a seamless appearance in the unfolded state. With a wide display area, the listability of the display is excellent. That is, the electronic device 50 can be said to be an electronic device that combines the improvement of the listability of the display and high portability. It can be said that it is an electronic device that combines the improvement of the listability of the display and high portability.

[0119] Figure 11(A) is a schematic cross-sectional view when cut along the cutting lines D1 - D2 in the unfolded state of the electronic device 50 shown in Figure 10(A). Also, Figure 11(B) is a schematic cross-sectional view when cut along the cutting lines E1 - E2 in the folded state of the electronic device 50 shown in Figure 10(B). It is a schematic cross-sectional view when cut along the cutting lines E1 - E2 in the folded state of the electronic device 50 shown in Figure 10(B). It is a schematic cross-sectional view.

[0120] As shown in Figures 11(A) and (B), inside the support 51a, there is a substrate 5 3a having terminals 54a. Similarly, inside the support 51b, there is a substrate 53 b having terminals 54b and 54c. The display panel 100a is electrically connected to the terminal 54a via the FPC112a. The display panel 100b is electrically connected to the terminal 54b via the FPC112b. The display panel 100c is electrically connected to the terminal 54c via the FPC112c.

[0121] Also, as shown in Figures 11(A) and (B), it is preferable to have a configuration in which a battery (battery 5 5a, battery 55b) is provided inside each support. By configuring the electronic device 50 to include a plurality of batteries, the frequency of charging can be reduced. Or, since the capacity of each battery can be reduced, the volume of each battery can be reduced, so that the thickness of the support 51a and the support 51b can be reduced, and the portability can be improved. Thereby, the thickness of the support 51a and the support 51b can be reduced, and the portability can be improved. Thereby, the thickness of the support 51a and the support 51b can be reduced, and the portability can be improved.

[0122] Also, as shown in Figure 11(B), in the folded state, it is preferable that the display panel 100b is curved along the curved surfaces of the support 51a and the support 51 b. In this way, the support Of the surfaces of the holding body 51a and the support body 51b, the corners are not located on the surface that can contact the display panel 100b. By making the surface into a curved surface shape with an appropriate radius of curvature, the problem that the display panel 10 0b is damaged by bending with a radius of curvature smaller than that allowed can be prevented.

[0123] FIGS. 12(A) and (B) show an electronic device 70 having a configuration different from that of the electronic device 50. The electronic device 70 mainly differs from the electronic device 50 in that it has a support body 51 c between the support body 51a and the support body 51b, and in that it has a plurality of display panels (display panels 10 00a to 100j) arranged side by side in the vertical and horizontal directions.

[0124] FIG. 12(A) is a schematic perspective view of the electronic device 70 in the unfolded state, and FIG. 12(B) is a schematic perspective view of the electronic device 70 in the folded and folded state.

[0125] The support body 51a and the support body 51c are rotatably connected by a hinge 52a. Also, the support body 51c and the support body 51b are rotatably connected by a hinge 52b. The display panel 100a and the display panel 100f are supported by the support body 51a. Also, the display panel 100c and the display panel 100h are supported by the support body 51c. Also, the display panel 100e and the display panel 100j are supported by the support body 51b. The display panels 100b, 100d, 100 g, and 100i, which are provided so as to straddle at least each support body, each have flexibility.

[0126] In the electronic device 70 according to one aspect of the present invention, a part of the flexible display device is provided on three support bodies. ​​​​The display device is supported by the display unit. For example, the display panel 100b and the display panel 100g are bent so that the display surface faces inward. It is possible to bend the wire so that it faces outward (inward bending) or outward (outward bending). The electronic device 70 is highly portable when the display device is folded, and can be carried around easily when the display device is unfolded. The wide display area with no visible seams provides excellent visibility of the display. The 0 can be said to be an electronic device that combines improved display visibility with high portability.

[0127] As shown in FIG. 12(A) and (B), the overlapping area of ​​each display panel is located in the curved area. In particular, it is preferable to prevent the visible light transmitting region 110 (region Among the areas 110a to 110j, the display device is provided in a strip shape in a direction perpendicular to the direction in which the display device is bent. It is preferable that the part to be cut is not located in a bending region. In the region 110, the portion that is provided in a strip shape in a direction parallel to the bending direction is as follows: Since it has relatively high mechanical strength against bending, it may be located in a bending region.

[0128] FIG. 13 is a cross-sectional view of the electronic device 70 in the folded state shown in FIG. 12(B) along the cutting line F1-F. 2. The inside of the support 51c includes the support 51a and The support 51c also has a substrate 53c, similar to the support 51b. The support 51c also has a battery 55c It is preferred that the compound has the formula:

[0129] The above describes the configuration of an electronic device having two or three supports. The display device according to one embodiment of the present invention can be easily enlarged in area. Therefore, by increasing the number of supports, it is possible to increase the display area in the unfolded state. Also, the area of one support can be increased.

[0130] This embodiment can be implemented in appropriate combination with at least some of the other embodiments described in this specification. It can be implemented in combination.

[0131] (Embodiment 2) In this embodiment, a display panel applicable to a display device according to one aspect of the present invention will be described with reference to the drawings. Here, as an example of the display panel, a touch panel having a function as a touch sensor will be described. It will be described.

[0132] FIG. 14(A) is a top view for explaining the structure of a touch panel applicable to a display device according to one aspect of the present invention. FIG. 14(B) is a cross-sectional view taken along cutting lines A-B and C-D in FIG. 14(A). FIG. 14(C) is a cross-sectional view taken along cutting line E-F in FIG. 14(A).

[0133] [Explanation of the top view] The touch panel 300 illustrated in this embodiment has a display unit 301 (see FIG. 14(A)). Reference.

[0134] The display unit 301 includes a plurality of pixels 302 and a plurality of imaging pixels 308. The imaging pixel 308 can detect a finger or the like that touches the display unit 301. Thus, the imaging pixel 308 can be used to constitute a touch sensor.

[0135] The pixel 302 includes a plurality of sub-pixels (for example, sub-pixel 302R), and the sub-pixel includes a light-emitting element and a pixel circuit that can supply power to drive the light-emitting element.

[0136] The pixel circuit is electrically connected to a wiring capable of supplying a selection signal and a wiring capable of supplying an image signal.

[0137] Also, the touch panel 300 includes a scanning line driving circuit 303g(1) capable of supplying a selection signal to the pixel 302 and an image signal line driving circuit 303s(1) capable of supplying an image signal to the pixel 302.

[0138] The imaging pixel 308 includes a photoelectric conversion element and an imaging pixel circuit for driving the photoelectric conversion element.

[0139] The imaging pixel circuit is electrically connected to a wiring capable of supplying a control signal and a wiring capable of supplying a power supply potential.

[0140] Examples of the control signal include a signal capable of selecting an imaging pixel circuit for reading a recorded imaging signal, a signal capable of initializing the imaging pixel circuit, and a signal capable of determining the time for the imaging pixel circuit to detect light.

[0141] The touch panel 300 includes an imaging pixel driving circuit 303g(2) capable of supplying a control signal to the imaging pixel 308 and an imaging signal line driving circuit 303s(2) for reading an imaging signal.

[0142] The touch panel 300 includes a region 110 that transmits visible light along two sides of the display unit 301.

[0143] [Explanation of cross-sectional view] The touch panel 300 has a substrate 310 and a counter substrate 370 facing the substrate 310 (see Fig. 14(B)).

[0144] ​​​​​​​​​​​The substrate 310 is a laminate including a flexible substrate 310b, a barrier film 310a that prevents impurities from diffusing into the light-emitting element, and an adhesive layer 310c that bonds the substrate 310b and the barrier film 310a together. The opposing substrate 370 is a laminate including a flexible substrate 370b, a barrier film 370a that prevents impurities from diffusing into the light-emitting element, and an adhesive layer 370c that bonds the substrate 370b and the barrier film 370a together (see FIG. 14(B)). It is a laminate.

[0145] The sealing material 360 bonds the opposing substrate 370 and the substrate 310 together. Further, the sealing material 360 has a refractive index greater than that of air and also functions as a layer (hereinafter also referred to as an optical bonding layer) that optically bonds two members (here, the opposing substrate 370 and the substrate 310) sandwiching the sealing material 360. The pixel circuit and the light-emitting element (for example, the first light-emitting element 350R) are located between the substrate 310 and the opposing substrate 370. The sealing material 360 bonds the opposing substrate 370 and the substrate 310 together. Further, the sealing material 360 has a refractive index greater than that of air and also functions as a layer (hereinafter also referred to as an optical bonding layer) that optically bonds two members (here, the opposing substrate 370 and the substrate 310) sandwiching the sealing material 360. The pixel circuit and the light-emitting element (for example, the first light-emitting element 350R) are located between the substrate 310 and the opposing substrate 370. It is a laminate (see FIG. 14(B)).

[0146] The sealing material 360 bonds the opposing substrate 370 and the substrate 310 together. Also, the sealing material 360 has a refractive index greater than that of air and functions as a layer (hereinafter also referred to as an optical bonding layer) that optically bonds two members (here, the opposing substrate 370 and the substrate 310) sandwiching the sealing material 360. The pixel circuit and the light-emitting element (for example, the first light-emitting element 350R) are between the substrate 310 and the opposing substrate 370. The sealing material 360 has a refractive index greater than that of air and also functions as a layer (hereinafter also referred to as an optical bonding layer) that optically bonds two members (here, the opposing substrate 370 and the substrate 310) sandwiching the sealing material 360. The pixel circuit and the light-emitting element (for example, the first light-emitting element 350R) are between the substrate 310 and the opposing substrate 370. It functions as a layer (hereinafter also referred to as an optical bonding layer) that optically bonds two members (here, the opposing substrate 370 and the substrate 310) sandwiching the sealing material 360. The pixel circuit and the light-emitting element (for example, the first light-emitting element 350R) are between the substrate 310 and the opposing substrate 370. The pixel circuit and the light-emitting element (for example, the first light-emitting element 350R) are between the substrate 310 and the opposing substrate 370. It is between the substrate 310 and the opposing substrate 370.

[0147] 〔Configuration of Pixel〕 The pixel 302 has sub-pixels 302R, 302G, and 302B (see FIG. 14(C)). Also, the sub-pixel 302R includes a light-emitting module 380R, the sub-pixel 302G includes a light-emitting module 380G, and the sub-pixel 302B includes a light-emitting module 380B. For example, the sub-pixel 302R includes a pixel circuit including the first light-emitting element 350R and a transistor 302t that can supply power to the first light-emitting element 350R (see FIG. 14(B)). Also, the light-emitting module 380R includes the first light-emitting element 350R and an optical element (for example, the first color filter layer 367R). The sub-pixel 302G includes a light-emitting module 380G, and the sub-pixel 302B includes a light-emitting module 380B. It does.

[0148] For example, the sub-pixel 302R includes a pixel circuit including the first light-emitting element 350R and a transistor 302t that can supply power to the first light-emitting element 350R (see FIG. 14(B)). Also, the light-emitting module 380R includes the first light-emitting element 350R and an optical element (for example, the first color filter layer 367R). It includes a pixel circuit including the first light-emitting element 350R and a transistor 302t that can supply power to the first light-emitting element 350R (see FIG. 14(B)). Also, the light-emitting module 380R includes the first light-emitting element 350R and an optical element (for example, the first color filter layer 367R). The light-emitting module 380R includes the first light-emitting element 350R and an optical element (for example, the first color filter layer 367R). For example, the first color filter layer 367R).

[0149] The first light-emitting element 350R includes a lower electrode 351R, an upper electrode 352, and a layer 353 containing a light-emitting organic compound between the lower electrode 351R and the upper electrode 352 (see FIG. 14(C)). .

[0150] The layer 353 containing a light-emitting organic compound includes a light-emitting unit 353a, a light-emitting unit 353b, and an intermediate layer 354 between the light-emitting unit 353a and the light-emitting unit 353b.

[0151] The light-emitting module 380R has a first colored layer 367R on the counter substrate 370. The colored layer may be any layer that transmits light having a specific wavelength. For example, a layer that selectively transmits light presenting red, green, blue, or the like can be used. Alternatively, a region that transmits the light emitted by the light-emitting element as it is may be provided.

[0152] For example, the light-emitting module 380R has a sealing material 360 in contact with the first light-emitting element 350R and the first colored layer 367R.

[0153] The first colored layer 367R is located at a position overlapping the first light-emitting element 350R. As a result, a part of the light emitted by the first light-emitting element 350R passes through the sealing material 360 that also serves as an optical bonding layer and the first colored layer 367R and is emitted to the outside of the light-emitting module 380R as indicated by the arrow in the figure.

[0154] Here, an example in which a light-emitting element is used as the display element has been shown, but one aspect of the present invention is not limited to this.

[0155] For example, in this specification and the like, a display element, a display device that is a device having the display element, or ​​​​​​​​​​A display panel, a light-emitting element, and a light-emitting device having the light-emitting element can use various forms or can have various elements. A display element, a display device, a display panel, a light-emitting element, or a light-emitting device can be, for example, an EL (electroluminescence) element (an EL element including organic and inorganic substances, an organic EL element, an inorganic EL element), an LED (a white LED, a red LED, a green LED, a blue LED, etc.), a transistor (a transistor that emits light according to an electric current), an electron emission element, a liquid crystal element, an electronic ink, an electrophoretic element, a grating light valve (GLV), a plasma display (PDP), a display element using MEMS (micro-electro-mechanical ·system), a digital micromirror device (DMD), a DMS ( digital·micro·shutter), MIRASOL (registered trademark), an IMOD ( interference·modulation) element, a shutter-type MEMS display element, an optical interference-type MEMS display element, an electro-wetting element, a piezoelectric ceramic display, and has at least one of a display element using carbon nanotubes, etc. In addition to these it may also have a display medium in which contrast, luminance, reflectance, transmittance, etc. change due to an electrical or magnetic action. As an example of a display device using an EL element, there is an EL display spray, etc. As an example of a display device using an electron emission element, there is a field emission display (FED) or an SED method flat panel display (SED: Surface-conduction Electron-emitter Display) or the like. As an example of a display device using a liquid crystal element, there is a liquid crystal display (a transmissive liquid crystal display, a transflective liquid crystal display, a reflective liquid crystal display, a direct-view liquid crystal There are, for example, a light ray and a projection type liquid crystal display). Electronic ink, electronic powder fluid (registered trademark), or As an example of a display device using an electrophoretic element, there is electronic paper. In addition, when realizing a transflective type liquid crystal display or a reflective liquid crystal display, part or all of the pixel electrodes may have the function of a reflective electrode. For example, part or all of the pixel electrodes may have aluminum, silver, etc. Further, in that case, it is also possible to provide a memory circuit such as an SRAM under the reflective electrode. Thereby furthermore, power consumption can be reduced.

[0156] 〔Configuration of touch panel〕 The touch panel 300 has a light shielding layer 367BM on the counter substrate 370. The light shielding layer 367B M is provided so as to surround a colored layer (for example, the first colored layer 367R).

[0157] The touch panel 300 includes an antireflection layer 367p at a position overlapping the display unit 301. As the antireflection layer 367p, for example, a circularly polarized plate can be used.

[0158] The touch panel 300 includes an insulating film 321. The insulating film 321 covers the transistor 302t . Note that the insulating film 321 can be used as a layer for flattening the unevenness caused by the pixel circuit. Also, a layer that can suppress the diffusion of impurities into the transistor 302t and the like can be applied to the insulating film 321. The touch panel 300 has a light emitting element (for example, the first light emitting element 350R) on the insulating film 321

[0159] . The touch panel 300 has it on the insulating film 321.

[0160] The touch panel 300 has a partition wall 328 overlapping the end of the lower electrode 351R on the insulating film 321 (see Fig. 14(C)). Further, a spacer 329 for controlling the distance between the substrate 310 and the counter substrate 370 is provided on the partition wall 328.

[0161] [Configuration of Image Signal Line Driving Circuit] The image signal line driving circuit 303s(1) includes a transistor 303t and a capacitor 303c. Note that the driving circuit can be formed on the same substrate in the same process as the pixel circuit. As shown in Fig. 1 14(B), the transistor 303t may have a second gate on the insulating film 321. The second gate may be electrically connected to the gate of the transistor 303t, or different potentials may be applied to these. Further, if necessary, the second gate may be provided for the transistor 308t, the transistor 302t, etc.

[0162] [Configuration of Imaging Pixel] The imaging pixel 308 includes a photoelectric conversion element 308p and an imaging pixel circuit for detecting the light irradiated to the photoelectric conversion element 308p. Further, the imaging pixel circuit includes a transistor 308t.

[0163] For example, a pin-type photodiode can be used as the photoelectric conversion element 308p.

[0164] [Other Configuration] The touch panel 300 includes a wiring 311 capable of supplying signals, and a terminal 319 is provided on the wiring 311. Note that an FPC309(1) capable of supplying signals such as an image signal and a synchronization signal is electrically connected to the terminal 319.

[0165] Note that a printed wiring board (PWB) may be attached to the FPC309(1). stomach.

[0166] The transistors formed in the same process are transistor 302t, transistor 303 t, transistor 308t, and the like.

[0167] The transistor structure may be a bottom gate type, a top gate type, or the like. A transistor can be applied.

[0168] In addition to the gate, source, and drain of the transistor, the various wiring that makes up the touch panel Possible materials for the wires and electrodes include aluminum, titanium, chromium, nickel, Kel, copper, yttrium, zirconium, molybdenum, silver, tantalum, or tungsten Metals such as tungsten or alloys containing these as the main component are used in a single layer structure or a multilayer structure. For example, a single layer structure of an aluminum film containing silicon, or an aluminum film laminated on a titanium film A two-layer structure with an aluminum film on a tungsten film, a two-layer structure with a copper-magnesium film on a tungsten film, Two-layer structure with copper film laminated on aluminum alloy film, two-layer structure with copper film laminated on titanium film A two-layer structure in which a copper film is laminated on a tungsten film, a titanium film or a titanium nitride film, and An aluminum film or a copper film is laminated on the titanium film or the titanium nitride film, and then the aluminum film or the copper film is laminated on the titanium film or the titanium nitride film. A three-layer structure in which a titanium film or titanium nitride film is formed on the top of the molybdenum film or molybdenum nitride film A molybdenum film and an aluminum film or a copper film are laminated on the molybdenum film or the molybdenum nitride film. A three-layer structure in which a film is laminated and then a molybdenum film or molybdenum nitride film is formed on top of the laminate. A transparent conductive material containing indium oxide, tin oxide, or zinc oxide may also be used. Yes. In addition, when using copper containing manganese, the controllability of the shape by etching is enhanced, which is preferable. preferable.

[0169] For semiconductors in which channels of transistors such as transistor 302t, transistor 303t, and transistor 308t are formed, it is preferable to apply an oxide semiconductor. In particular, it is preferable to apply an oxide semiconductor having a larger bandgap than silicon. When using a semiconductor material having a wider bandgap and a smaller carrier density than silicon, the current in the off state of the transistor can be reduced, which is preferable. For semiconductors in which channels of transistors such as transistor 302t, transistor 303t, and transistor 308t are formed, it is preferable to apply an oxide semiconductor. In particular, it is preferable to apply an oxide semiconductor having a larger bandgap than silicon. When using a semiconductor material having a wider bandgap and a smaller carrier density than silicon, the current in the off state of the transistor can be reduced, which is preferable. For semiconductors in which channels of transistors such as transistor 302t, transistor 303t, and transistor 308t are formed, it is preferable to apply an oxide semiconductor. In particular, it is preferable to apply an oxide semiconductor having a larger bandgap than silicon. When using a semiconductor material having a wider bandgap and a smaller carrier density than silicon, the current in the off state of the transistor can be reduced, which is preferable. For semiconductors in which channels of transistors such as transistor 302t, transistor 303t, and transistor 308t are formed, it is preferable to apply an oxide semiconductor. In particular, it is preferable to apply an oxide semiconductor having a larger bandgap than silicon. When using a semiconductor material having a wider bandgap and a smaller carrier density than silicon, the current in the off state of the transistor can be reduced, which is preferable. For semiconductors in which channels of transistors such as transistor 302t, transistor 303t, and transistor 308t are formed, it is preferable to apply an oxide semiconductor. In particular, it is preferable to apply an oxide semiconductor having a larger bandgap than silicon. When using a semiconductor material having a wider bandgap and a smaller carrier density than silicon, the current in the off state of the transistor can be reduced, which is preferable.

[0170] For example, as the above oxide semiconductor, it is preferable to contain at least indium (In) or zinc (Zn). More preferably, it contains an oxide represented by In-M-Zn-based oxide (M is a metal such as Al, Ti, ) For example, as the above oxide semiconductor, it is preferable to contain at least indium (In) or zinc (Zn). More preferably, it contains an oxide represented by In-M-Zn-based oxide (M is a metal such as Al, Ti, Ga, Ge, Y, Zr, Sn, La, Ce or Hf). For example, as the above oxide semiconductor, it is preferable to contain at least indium (In) or zinc (Zn). More preferably, it contains an oxide represented by In-M-Zn-based oxide (M is a metal such as Al, Ti,

[0171] In particular, as the semiconductor layer, it is preferable to use an oxide semiconductor film having a plurality of crystal parts, wherein the c-axis of the crystal part is oriented perpendicular to the surface to be formed of the semiconductor layer or the upper surface of the semiconductor layer, and there is no grain boundary between adjacent crystal parts. In particular, as the semiconductor layer, it is preferable to use an oxide semiconductor film having a plurality of crystal parts, wherein the c-axis of the crystal part is oriented perpendicular to the surface to be formed of the semiconductor layer or the upper surface of the semiconductor layer, and there is no grain boundary between adjacent crystal parts. In particular, as the semiconductor layer, it is preferable to use an oxide semiconductor film having a plurality of crystal parts, wherein the c-axis of the crystal part is oriented perpendicular to the surface to be formed of the semiconductor layer or the upper surface of the semiconductor layer, and there is no grain boundary between adjacent crystal parts.

[0172] Since such an oxide semiconductor has no grain boundaries, the occurrence of cracks in the oxide semiconductor film due to stress when the display panel is curved is suppressed. Therefore, such an oxide semiconductor can be suitably used for a display panel having flexibility and used in a curved state. Since such an oxide semiconductor has no grain boundaries, the occurrence of cracks in the oxide semiconductor film due to stress when the display panel is curved is suppressed. Therefore, such an oxide semiconductor can be suitably used for a display panel having flexibility and used in a curved state. Since such an oxide semiconductor has no grain boundaries, the occurrence of cracks in the oxide semiconductor film due to stress when the display panel is curved is suppressed. Therefore, such an oxide semiconductor can be suitably used for a display panel having flexibility and used in a curved state. Since such an oxide semiconductor has no grain boundaries, the occurrence of cracks in the oxide semiconductor film due to stress when the display panel is curved is suppressed. Therefore, such an oxide semiconductor can be suitably used for a display panel having flexibility and used in a curved state.

[0173] By using such a material as the semiconductor layer, fluctuations in electrical characteristics are suppressed, and reliability is A high-performance transistor can be realized.

[0174] In addition, due to its low off-current, the charge accumulated in the capacitor through the transistor can be held for a long period of time. By applying such a transistor to the pixel, it is possible to stop the drive circuit while maintaining the gradation of the image displayed in each display area. As a result, a display device with extremely low power consumption can be realized.

[0175] Alternatively, it is preferable to use silicon for the semiconductor in which the channels of transistors such as transistor 302t, transistor 303t, and transistor 308t are formed. Although amorphous silicon may be used as the silicon, it is particularly preferable to use crystalline silicon. For example, it is preferable to use microcrystalline silicon, polycrystalline silicon, single-crystalline silicon, etc. In particular, polycrystalline silicon can be formed at a lower temperature than single-crystalline silicon, and has a higher field-effect mobility and higher reliability than amorphous silicon. By applying such a polycrystalline semiconductor to the pixel, the aperture ratio of the pixel can be improved. Also, even when the pixel has extremely high definition, it is possible to form the gate drive circuit and the source drive circuit on the same substrate as the pixel, and the number of components constituting the electronic device can be reduced.

[0176] Here, a method for forming a flexible light-emitting panel will be described.

[0177] Here, for the sake of convenience, a configuration including pixels and a drive circuit, or a configuration including optical members such as a color filter will be referred to as an element layer. The element layer includes, for example, a display element, and in addition to the display element, a display ​​​​​​​​​​It may include wiring electrically connected to the element, and elements such as transistors used in pixels and circuits. This is also acceptable.

[0178] Here, the support having an insulating surface on which the element layer is formed is referred to as a base material. This shall be the case.

[0179] As a method of forming an element layer on a base material having a flexible insulating surface, there are a method of directly forming an element layer on the base material, and a method of forming an element layer on a rigid support base material and then peeling the element layer and the support base material to transfer the element layer to the base material. After forming the element layer on the rigid support base material, peeling the element layer and the support base material and transferring the element layer to the base material.

[0180] When the material constituting the base material has heat resistance against the heat applied in the element layer forming process, it is preferable to directly form the element layer on the base material because the process is simplified. At this time, forming the element layer in a state where the base material is fixed to the support base material is preferable because it facilitates conveyance within the apparatus and between apparatuses. This is preferable.

[0181] Also, when using the method of transferring to the base material after forming the element layer on the support base material, first, a release layer and an insulating layer are laminated on the support base material, and the element layer is formed on the insulating layer. Subsequently, the support base material and the element layer are peeled and transferred to the base material. At this time, a material that causes peeling at the interface between the support base material and the release layer, the interface between the release layer and the insulating layer, or within the release layer may be selected. This is acceptable.

[0182] For example, as the release layer, a layer containing a high melting point metal material such as tungsten and a layer containing an oxide of the metal material are laminated and used, and it is preferable to use a layer in which a plurality of silicon nitrides or silicon oxynitrides are laminated on the release layer. Using a high melting point metal material is preferable because the degree of freedom in the element layer forming process increases. This is preferable. This is preferable.

[0183] The peeling may be performed by applying mechanical force, etching the peeling layer, or dropping a liquid onto a part of the peeling interface to penetrate the entire peeling interface. Also, the peeling may be performed by applying heat to the peeling interface using the difference in thermal expansion. Moreover, when peeling is possible at the interface between the support substrate and the insulating layer, the peeling layer may not be provided.

[0184] For example, when using glass as the support substrate and an organic resin such as polyimide as the insulating layer, a starting point for peeling may be formed by locally heating a part of the organic resin using a laser beam or the like, and peeling may be performed at the interface between the glass and the insulating layer. Or, a metal layer may be provided between the support substrate and the insulating layer made of an organic resin, and by passing an electric current through the metal layer to heat the metal layer, peeling may be performed at the interface between the metal layer and the insulating layer. At this time, the insulating layer made of an organic resin can be used as a substrate. As the flexible substrate, for example, polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyacrylonitrile resin, polyimide resin, polymethyl methacrylate resin, polycarbonate (PC) resin, polyethersulfone (PES) resin, polyamide resin, cycloolefin resin, polystyrene resin, polyamideimide resin, polyvinyl chloride resin, etc. may be mentioned. In particular, it is preferable to use a material with a low coefficient of thermal expansion. For example, polyamideimide resin, polyimide resin, PET, etc. with a coefficient of thermal expansion of 30×10 / K or less can be preferably used. Also, a substrate in which a fibrous body is impregnated with a resin (also referred to as a prepreg), or an inorganic filler mixed in an organic resin

[0185] As the flexible substrate, for example, polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyacrylonitrile resin, polyimide resin, polymethyl methacrylate resin, polycarbonate (PC) resin, polyethersulfone (PES) resin, polyamide resin, cycloolefin resin, polystyrene resin, polyamideimide resin, polyvinyl chloride resin, etc. may be mentioned. In particular, it is preferable to use a material with a low coefficient of thermal expansion. For example, polyamideimide resin, polyimide resin, PET, etc. with a coefficient of thermal expansion of 30×10 / K or less can be preferably used. Also, a substrate in which a fibrous body is impregnated with a resin (also referred to as a prepreg), or an inorganic filler mixed in an organic resin can be used. As the flexible substrate, for example, polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyacrylonitrile resin, polyimide resin, polymethyl methacrylate resin, polycarbonate (PC) resin, polyethersulfone (PES) resin, polyamide resin, cycloolefin resin, polystyrene resin, polyamideimide resin, polyvinyl chloride resin, etc. may be mentioned. In particular, it is preferable to use a material with a low coefficient of thermal expansion. For example, polyamideimide resin, polyimide resin, PET, etc. with a coefficient of thermal expansion of 30×10 / K or less can be preferably used. Also, -6 / K or less polyamideimide resin, polyimide resin, PET, etc. can be preferably used. Also, a substrate in which a fibrous body is impregnated with a resin (also referred to as a prepreg), or an inorganic filler mixed in an organic resin It is also possible to use a substrate with a reduced thermal expansion coefficient.

[0186] When a fibrous body is included in the above material, the fibrous body uses high-strength fibers of organic or inorganic compounds. Specifically, high-strength fibers refer to fibers with a high tensile elastic modulus or Young's modulus. Typical examples include polyvinyl alcohol-based fibers, polyester-based fibers, polyamide -based fibers, polyethylene-based fibers, aramid-based fibers, polyparaphenylene benzobisoxazole fibers, glass fibers, or carbon fibers. Examples of glass fibers include glass fibers using E glass, S glass, D glass, Q glass, etc. These can be used in the form of woven fabric or non-woven fabric, and a structure in which this fibrous body is impregnated with resin and the resin is cured may be used as a flexible substrate. When using a structure composed of a fibrous body and resin as a flexible substrate, the reliability against breakage due to bending or local pressing is improved, which is preferable.

[0187] Note that the display device according to one aspect of the present invention can use an active matrix method having an active element in a pixel, or a passive matrix method having no active element in a pixel.

[0188] In the active matrix method, as the active element (active element, non-linear element), not only a transistor but also various active elements (active elements, non-linear elements) can be used. For example, MIM (Metal Insulator Metal), or T FD (Thin Film Diode), etc. can also be used. Since these elements have few manufacturing steps, it is possible to reduce the manufacturing cost or improve the yield. ​​​Alternatively, since the size of these elements is small, the aperture ratio can be improved. Thus, low power consumption and high brightness can be achieved.

[0189] As an alternative to the active matrix method, it is also possible to use a passive matrix type that does not use active elements (active elements, non-linear elements ). Since active elements (active elements, non-linear elements) are not used, the manufacturing process is less, so the manufacturing cost can be reduced or the yield can be improved. Alternatively, since active elements (active elements, non-linear elements) are not used, the aperture ratio can be improved, and low power consumption or high brightness can be achieved.

[0190] Here, examples of performing various displays using a display device have been shown, but one aspect of the present invention is not limited to this. For example, it may not display information. As an example, instead of a display device, it may be used as a lighting device. By applying it to a lighting device, it can be utilized as an interior with excellent design. Alternatively, it can be utilized as lighting that can illuminate in various directions. Alternatively, instead of a display device, it may be used as a light source such as a backlight or a front light. That is, it may be utilized as a lighting device for a display panel.

[0191] In particular, when using the display device of one aspect of the present invention in a household television device, digital signage, or a PID, applying a touch panel to the display panel in this way is preferable because not only can an image or video be displayed in the display area, but also an observer can intuitively operate it. Also, for example, when used for advertising purposes, it can enhance the advertising effect. ​ It produces effects. Also, when used for purposes of providing information such as route information and traffic information the usability can be improved by intuitive operations.

[0192] In addition, when it is not necessary to have the function as a touch sensor, such as when used for large advertisements installed on the walls of buildings and public facilities, etc., the touch sensor configuration in the touch panel configuration example shown above may be omitted, and a display panel may be configured.

[0193] (Embodiment 3) In this embodiment, a display panel applicable to a display device according to an aspect of the present invention will be described with reference to the drawings.

[0194] Here, as an example of the display panel, a touch panel having a function as a touch sensor will be described.

[0195] FIG. 15 is a cross-sectional view of a touch panel 500.

[0196] The touch panel 500 includes a display unit 501 and a touch sensor 595. Also, the touch panel 500 has a substrate 510, a substrate 570, and a substrate 590. Note that the substrate 510, substrate 570, and substrate 590 all have flexibility.

[0197] The display unit 501 includes a substrate 510, a plurality of pixels on the substrate 510, and a plurality of wirings 511 capable of supplying signals to the pixels. The plurality of wirings 511 are routed to the outer peripheral portion of the substrate 510, and a part of them constitutes a terminal 519. The terminal 519 is electrically connected to an FPC 509 ( 1).

[0198] [Touch Sensor] The substrate 590 is provided with a touch sensor 595 and a plurality of wiring 598 that is electrically connected to the touch sensor 595. The plurality of wiring 598 is routed along the outer peripheral portion of the substrate 590, and a part thereof constitutes a terminal. And the terminal is electrically connected to the FPC509(2).

[0199] As the touch sensor 595, for example, a capacitance type touch sensor can be applied. As the capacitance type, there are a surface capacitance type, a projected capacitance type, etc.

[0200] As the projected capacitance type, mainly due to the difference in the driving method, there are a self-capacitance method and a mutual-capacitance method. Using the mutual-capacitance method is preferable because simultaneous multi-point detection becomes possible.

[0201] Hereinafter, the case where a projected capacitance type touch sensor is applied will be described.

[0202] Note that the configuration of the touch sensor is not limited to the above, and various sensors that can detect the proximity or contact of a detection target such as a finger can be applied.

[0203] The projected capacitance type touch sensor 595 has electrodes 591 and 592. The electrode 591 is electrically connected to any one of the plurality of wiring 598, and the electrode 592 is electrically connected to any other one of the plurality of wiring 598.

[0204] The wiring 594 electrically connects two electrodes 591 sandwiching the electrode 592. At this time, a shape in which the area of the intersection portion of the electrode 592 and the wiring 594 is as small as possible is preferable. Thereby the area of the region where no electrode is provided can be reduced, and unevenness in transmittance can be reduced. As a result, the unevenness in the luminance of the light transmitted through the touch sensor 595 can be reduced. ​​​

[0205] Note that the shapes of the electrodes 591 and 592 can take various forms. For example, a plurality of electrodes 5 91 can be arranged so as to minimize the occurrence of gaps, and a plurality of electrodes 592 can be provided at intervals through an insulating layer so as to form a region that does not overlap with the electrode 59 1. At this time, it is preferable to provide a dummy electrode that is electrically insulated from these between two adjacent electrodes 592, because it can reduce the area of regions with different transmittance.

[0206] The touch sensor 595 includes a substrate 590, electrodes 591 and 592 arranged in a staggered pattern on the substrate 590, an insulating layer 593 covering the electrodes 591 and 592, and wiring 594 that electrically connects adjacent electrodes 591.

[0207] The adhesive layer 597 attaches the substrate 590 to the substrate 570 so that the touch sensor 595 overlaps the display unit 501.

[0208] The electrodes 591 and 592 are formed using a conductive material having light-transmitting properties. Examples of the conductive material having light-transmitting properties include conductive oxides such as indium oxide, indium tin oxide, indium zinc oxide, zinc oxide, and zinc oxide added with gallium, or graphene.

[0209] After forming a film of a conductive material having light-transmitting properties on the substrate 590 by sputtering, unnecessary portions are removed by various patterning techniques such as photolithography to form the electrodes 59 1 and 592. Graphene can be formed by reducing a solution in which graphene oxide is dispersed after coating it, in addition to the CVD method.

[0210] In addition, as the material used for the insulating layer 593, for example, resins such as acrylic and epoxy, in addition to resins having a siloxane bond, silicon oxide, silicon oxynitride, aluminum oxide and other inorganic insulating materials can also be used.

[0211] An opening reaching the electrode 591 is provided in the insulating layer 593, and the wiring 594 electrically connects the adjacent electrodes 591. Since the light-transmissive conductive material can increase the aperture ratio of the touch panel, it can be suitably used for the wiring 594. In addition, a material having higher conductivity than the electrodes 591 and 59 2 can be suitably used for the wiring 594 because it can reduce the electrical resistance.

[0212] One electrode 592 extends in one direction, and a plurality of electrodes 592 are provided in a stripe shape.

[0213] The wiring 594 is provided so as to intersect the electrode 592.

[0214] A pair of electrodes 591 are provided with one electrode 592 interposed therebetween, and the wiring 594 electrically connects the pair of electrodes 591.

[0215] Note that the plurality of electrodes 591 do not necessarily need to be arranged in a direction orthogonal to one electrode 592, and may be arranged at an angle of less than 90 degrees.

[0216] One wiring 598 is electrically connected to the electrode 591 or the electrode 592. A part of the wiring 598 functions as a terminal. As the wiring 598, for example, metal materials such as aluminum, gold, platinum, silver nickel, titanium, tungsten, chromium, molybdenum, iron, cobalt, copper, or palladium and alloy materials containing the metal materials can be used. ​​​​​

[0217] In addition, an insulating layer covering the insulating layer 593 and the wiring 594 can be provided to protect the touch sensor 595. This can be done.

[0218] Also, the connection layer 599 electrically connects the wiring 598 and the FPC 509(2).

[0219] As the connection layer 599, an anisotropic conductive film (ACF: Anisotropic Conductive Film) or an anisotropic conductive paste (ACP: Anisotropic Conductive Paste) can be used. nductive Film) or an anisotropic conductive paste (ACP: Anisotropi c Conductive Paste), etc. can be used.

[0220] The adhesive layer 597 has translucency. For example, a thermosetting resin or an ultraviolet curable resin can be used, and specifically, resins such as acrylic, urethane, epoxy, or resins having a siloxane bond can be used. This can be done.

[0221] In addition, the FPC 509(2) and the light-shielding wiring electrically connected thereto, etc. may be arranged at a position that does not overlap with the region 110 that transmits visible light. This can be done.

[0222] [Display unit] The display unit 501 includes a plurality of pixels arranged in a matrix. Each pixel includes a display element and a pixel circuit that drives the display element. This can be done.

[0223] In this embodiment, the case where a white organic electroluminescence element is applied as the display element will be described, but the display element is not limited to this. This can be done.

[0224] For example, as the display element, in addition to the organic electroluminescence element, a display element that performs display by an electrophoresis method or an electro-fluid (registered trademark) method (also referred to as electronic ink), a cha nge, etc. can be used. Various display elements such as a MEMS display element of a shutter method and a MEMS display element of an optical interference method can be used. In addition, a configuration suitable for the display element to be applied can be selected from various pixel circuits and used.

[0225] The substrate 510 is a laminate in which a flexible substrate 510b, a barrier film 510a that prevents diffusion of impurities into the light-emitting element, and an adhesive layer 510c that bonds the substrate 510b and the barrier film 510a are laminated together. is.

[0226] The substrate 570 is a laminate of a flexible substrate 570b, a barrier film 570a that prevents diffusion of impurities into the light-emitting element, and an adhesive layer 570c that bonds the substrate 570b and the barrier film 570a together. is.

[0227] The sealing material 560 bonds the substrate 570 and the substrate 510. The sealing material 560 has a refractive index larger than that of air. When light is extracted to the sealing material 560 side, the sealing material 560 also serves as an optical bonding layer. The pixel circuit and the light-emitting element (for example, the first light-emitting element 550R) are between the substrate 5 10 and the substrate 570. 10 and the substrate 570. is.

[0228] 〔Configuration of Pixel〕 The pixel includes a sub-pixel 502R, and the sub-pixel 502R includes a light-emitting module 580R.

[0229] The sub-pixel 502R includes a pixel circuit including a first light-emitting element 550R and a transistor 502t that can supply power to the first light-emitting element 550R. The light-emitting module 580R includes a first light-emitting element 550R and an optical element (for example, a first coloring layer 567R). is. is.

[0230] The first light-emitting element 550R has a lower electrode, an upper electrode, and a layer containing a light-emitting organic compound between the lower electrode and the upper electrode. It has a layer containing an organic compound.

[0231] The light-emitting module 580R has a first colored layer 567R in the direction of extracting light. The colored layer may be any layer that transmits light having a specific wavelength. For example, a layer that selectively transmits light exhibiting red, green, blue, or the like can be used. In addition, in other sub-pixels, a region that directly transmits the light emitted by the light-emitting element may be provided. The colored layer may be any layer that transmits light having a specific wavelength. For example, a layer that selectively transmits light exhibiting red, green, blue, or the like can be used. In addition, in other sub-pixels, a region that directly transmits the light emitted by the light-emitting element may be provided. The colored layer may be any layer that transmits light having a specific wavelength. For example, a layer that selectively transmits light exhibiting red, green, blue, or the like can be used. In addition, in other sub-pixels, a region that directly transmits the light emitted by the light-emitting element may be provided. The colored layer may be any layer that transmits light having a specific wavelength. For example, a layer that selectively transmits light exhibiting red, green, blue, or the like can be used. In addition, in other sub-pixels, a region that directly transmits the light emitted by the light-emitting element may be provided.

[0232] When the sealing material 560 is provided on the light extraction side, the sealing material 560 is in contact with the first light-emitting element 550R and the first colored layer 567R. When the sealing material 560 is provided on the light extraction side, the sealing material 560 is in contact with the first light-emitting element 550R and the first colored layer 567R.

[0233] The first colored layer 567R is located at a position overlapping the first light-emitting element 550R. As a result, a part of the light emitted by the first light-emitting element 550R passes through the first colored layer 567R and is emitted outside the light-emitting module 580R in the direction of the arrow shown in the figure. The first colored layer 567R is located at a position overlapping the first light-emitting element 550R. As a result, a part of the light emitted by the first light-emitting element 550R passes through the first colored layer 567R and is emitted outside the light-emitting module 580R in the direction of the arrow shown in the figure. The first colored layer 567R is located at a position overlapping the first light-emitting element 550R. As a result, a part of the light emitted by the first light-emitting element 550R passes through the first colored layer 567R and is emitted outside the light-emitting module 580R in the direction of the arrow shown in the figure.

[0234] 〔Configuration of the display unit〕 The display unit 501 has a light-shielding layer 567BM in the direction of emitting light. The light-shielding layer 567BM is provided so as to surround a colored layer (for example, the first colored layer 567R). The display unit 501 has a light-shielding layer 567BM in the direction of emitting light. The light-shielding layer 567BM is provided so as to surround a colored layer (for example, the first colored layer 567R).

[0235] The display unit 501 includes an antireflection layer 567p at a position overlapping the pixel. As the antireflection layer 567p, for example, a circularly polarized plate can be used. The display unit 501 includes an antireflection layer 567p at a position overlapping the pixel. As the antireflection layer 567p, for example, a circularly polarized plate can be used.

[0236] The display unit 501 includes an insulating film 521. The insulating film 521 covers the transistor 502t. The insulating film 521 is used as a layer for flattening the unevenness caused by the pixel circuit. The display unit 501 includes an insulating film 521. The insulating film 521 covers the transistor 502t. The insulating film 521 is used as a layer for flattening the unevenness caused by the pixel circuit. It is possible. Further, a laminated film including a layer capable of suppressing the diffusion of impurities can be applied to the insulating film 521. As a result, it is possible to suppress a decrease in the reliability of the transistor 502t or the like due to the diffusion of impurities.

[0237] The display unit 501 has a light-emitting element (for example, the first light-emitting element 550R) on the insulating film 521.

[0238] The display unit 501 has a partition wall 528 overlapping the end of the lower electrode on the insulating film 521. Further, a spacer for controlling the distance between the substrate 510 and the substrate 570 is provided on the partition wall 528.

[0239] 〔Configuration of scanning line driving circuit〕 The scanning line driving circuit 503g(1) includes a transistor 503t and a capacitor 503c. Note that the driving circuit can be formed on the same substrate in the same process as the pixel circuit.

[0240] 〔Other configurations〕 The display unit 501 includes a wiring 511 capable of supplying a signal, and a terminal 519 is provided on the wiring 511. Note that an FPC 509(1) capable of supplying signals such as an image signal and a synchronization signal is electrically connected to the terminal 519.

[0241] Note that a printed wiring board (PWB) may be attached to the FPC 509(1).

[0242] [Modification example of display unit] Various transistors can be applied to the display unit 501.

[0243] The configuration in the case where a bottom gate type transistor is applied to the display unit 501 is illustrated in FIGS. 15(A) and 15(B).

[0244] ​​​​​​​For example, a semiconductor layer containing an oxide semiconductor, amorphous silicon, or the like can be applied to the transistors 502t and 503t shown in FIG. 15(A).

[0245] For example, a semiconductor layer containing polycrystalline silicon or the like can be applied to the transistors 5 02t and 503t shown in FIG. 15(B).

[0246] The configuration in the case where a top-gate type transistor is applied to the display unit 501 is shown in FIG. 15(C) as shown.

[0247] For example, a semiconductor layer containing an oxide semiconductor, polycrystalline silicon, or a transferred single-crystalline silicon film can be applied to the transistors 502t and 503t shown in FIG. 15(C).

[0248] This embodiment can be implemented in appropriate combination with at least a part of other embodiments described in this specification.

[0249] (Embodiment 4) In this embodiment, a display panel applicable to a display device according to an aspect of the present invention will be described with reference to the drawings. Here, as an example of the display panel, a touch panel having a function as a touch sensor will be described.

[0250] FIG. 16 is a cross-sectional view of the touch panel 500B.

[0251] The touch panel 500B described in this embodiment includes a display unit 501 that displays the supplied image information on the side where the transistor is provided, and the touch sensor is provided on the substrate 510 side of the display unit, which is different from the touch panel 500 described in Embodiment 3. ​​​​​​​​ will be described in detail for different configurations, and parts that can use the same configuration shall incorporate the above description.

[0252] [Display unit] The display unit 501 includes a plurality of pixels arranged in a matrix. Each pixel includes a display element and a pixel circuit for driving the display element.

[0253] 〔Configuration of pixel〕 Each pixel includes a sub-pixel 502R, and the sub-pixel 502R includes a light-emitting module 580R.

[0254] The sub-pixel 502R includes a first light-emitting element 550R and a pixel circuit including a transistor 502t that can supply power to the first light-emitting element 550R.

[0255] The light-emitting module 580R includes the first light-emitting element 550R and an optical element (e.g., a first coloring layer 567R).

[0256] The first light-emitting element 550R has a lower electrode, an upper electrode, and a layer containing a light-emitting organic compound between the lower electrode and the upper electrode.

[0257] The light-emitting module 580R has a first coloring layer 567R in the direction of extracting light. The coloring layer may be any layer that transmits light having a specific wavelength. For example, a layer that selectively transmits light presenting a color such as red, green, or blue can be used. In other sub-pixels, a region that transmits the light emitted by the light-emitting element as it is may be provided.

[0258] The first coloring layer 567R is located at a position overlapping the first light-emitting element 550R. Also, the first light-emitting element 550R shown in Fig. 16(A) emits light toward the side where the transistor 502t is provided. It is emitted. As a result, a part of the light emitted by the first light-emitting element 550R passes through the first coloring layer 567 R and is emitted to the outside of the light-emitting module 580R in the direction of the arrow shown in the figure.

[0259] 〔Configuration of the display unit〕 The display unit 501 has a light-shielding layer 567BM in the direction of emitting light. The light-shielding layer 567BM is provided so as to surround the coloring layer (for example, the first coloring layer 567R).

[0260] The display unit 501 includes an insulating film 521. The insulating film 521 covers the transistor 502t and can be used as a layer for flattening the unevenness caused by the pixel circuit. In addition, a laminated film including a layer capable of suppressing the diffusion of impurities can be applied to the insulating film 521. Thereby, for example, a decrease in the reliability of the transistor 502t or the like due to impurities diffusing from the coloring layer 567R can be suppressed.

[0261] [Touch sensor] The touch sensor 595 is provided on the substrate 510 side of the display unit 501 (see Fig. 16(A) ).

[0262] The adhesive layer 597 is between the substrate 510 and the substrate 590 and bonds the display unit 501 and the touch sensor 5 95 together.

[0263] Note that the FPC 509(2) and the wiring having light-shielding properties electrically connected thereto may be arranged at positions that do not overlap with the visible light transmitting region 110.

[0264] [Modification example of the display unit] Various transistors can be applied to the display unit 501.

[0265] ​​The configuration in the case of applying a bottom-gate type transistor to the display unit 501 is shown in FIGS. 16(A) and FIGS. 16(B).

[0266] For example, a semiconductor layer containing an oxide semiconductor, amorphous silicon, or the like can be applied to the transistors 502t and 503t shown in FIG. 16(A). shown in FIG. 16(A).

[0267] For example, a semiconductor layer containing polycrystalline silicon or the like can be applied to the transistors 5 02t and 503t shown in FIG. 16(B).

[0268] The configuration in the case of applying a top-gate type transistor to the display unit 501 is shown in FIG. 16(C). shown in FIG. 16(C).

[0269] For example, a semiconductor layer containing an oxide semiconductor, polycrystalline silicon, or a transferred single-crystalline silicon film can be applied to the transistors 502t and 503t shown in FIG. 16(C). shown in FIG. 16(C). can be applied.

[0270] This embodiment can be implemented in appropriate combination with at least some of the other embodiments described herein. can be implemented in appropriate combination with at least some of the other embodiments described herein.

[0271] (Embodiment 5) In this embodiment, the configuration of the input / output device according to one aspect of the present invention will be described with reference to FIGS. 17 and 18. with reference to FIGS. 17 and 18.

[0272] FIG. 17 is a projection view for explaining the configuration of the input / output device according to one aspect of the present invention.

[0273] FIG. 17(A) is a projection view of an input / output device 600 according to one aspect of the present invention, and FIG. 17(B) is a projection view for explaining the configuration of a detection unit 60U included in the input / output device 600. output device 600 is a projection view for explaining the configuration of the detection unit 60U included in the input / output device 600.

[0274] FIG. 18 is a cross-sectional view illustrating a structure of an input / output device 600 of one embodiment of the present invention.

[0275] FIG. 18 is a cross-sectional view of the input / output device 600 of one embodiment of the present invention shown in FIG. 17 along Z1-Z2. It is.

[0276] The input / output device 600 can also be called a touch panel.

[0277] [Example of I / O device configuration] The input / output device 600 described in this embodiment has a window 64 that transmits visible light, and A plurality of detection units 60U are arranged in a matrix, and in the row direction (indicated by arrow R in the figure), A scanning line G1 electrically connects the plurality of detection units 60U arranged in the row direction (arrows in the figure) A signal line DL electrically connecting a plurality of detection units 60U arranged in a position indicated by a mark C A flexible first base material supporting the detection unit 60U, the scanning line G1, and the signal line DL. 66, and a flexible input device 620 overlapping the window portion 64 and arranged in a matrix. A display comprising a plurality of pixels 602 and a flexible second substrate 610 supporting the pixels 602. 17A to 17C.

[0278] The detection unit 60U is electrically connected to the detection element C that overlaps the window portion 64. The detector 69 is provided with a detection circuit 69 (see FIG. 17(B)).

[0279] The sensing element C includes an insulating layer 63, a first electrode 61 and a second electrode 62 sandwiching the insulating layer 63. 2 (see Figure 18).

[0280] The detection circuit 69 is supplied with a selection signal and generates a detection signal based on the change in capacitance of the detection element C. Supply DATA.

[0281] The scanning line G1 can supply a selection signal, the signal line DL can supply a detection signal DATA, and the detection circuit 69 is arranged so as to overlap the gaps between the plurality of window portions 64. Also, the input / output device 600 described in this embodiment includes a coloring layer between the detection unit 60U and the pixel 602 that overlaps the window portion 64 of the detection unit 60U.

[0282] Moreover, the input / output device 600 described in this embodiment includes a flexible input device 620 having a plurality of detection units 60U each having a window portion 64 that transmits visible light, and a flexible display unit 601 having a plurality of pixels 602 that overlap the window portion 64, and is configured to include a coloring layer between the window portion 64 and the pixel 602. Moreover, the input / output device 600 described in this embodiment includes a coloring layer between the detection unit 60U and the pixel 602 that overlaps the window portion 64 of the detection unit 60U.

[0283] Moreover, the input / output device 600 described in this embodiment includes a flexible input device 620 having a plurality of detection units 60U each having a window portion 64 that transmits visible light, and a flexible display unit 601 having a plurality of pixels 602 that overlap the window portion 64, and is configured to include a coloring layer between the window portion 64 and the pixel 602. Moreover, the input / output device 600 described in this embodiment includes a flexible input device 620 having a plurality of detection units 60U each having a window portion 64 that transmits visible light, and a flexible display unit 601 having a plurality of pixels 602 that overlap the window portion 64, and is configured to include a coloring layer between the window portion 64 and the pixel 602. Moreover, the input / output device 600 described in this embodiment includes a flexible input device 620 having a plurality of detection units 60U each having a window portion 64 that transmits visible light, and a flexible display unit 601 having a plurality of pixels 602 that overlap the window portion 64, and is configured to include a coloring layer between the window portion 64 and the pixel 602. Moreover, the input / output device 600 described in this embodiment includes a flexible input device 620 having a plurality of detection units 60U each having a window portion 64 that transmits visible light, and a flexible display unit 601 having a plurality of pixels 602 that overlap the window portion 64, and is configured to include a coloring layer between the window portion 64 and the pixel 602.

[0284] As a result, the input / output device can supply a detection signal based on a change in capacitance and position information of the detection unit that supplies the detection signal, display image information associated with the position information of the detection unit, and can be bent. As a result, a novel input / output device excellent in convenience or reliability can be provided. As a result, the input / output device can supply a detection signal based on a change in capacitance and position information of the detection unit that supplies the detection signal, display image information associated with the position information of the detection unit, and can be bent. As a result, a novel input / output device excellent in convenience or reliability can be provided. As a result, the input / output device can supply a detection signal based on a change in capacitance and position information of the detection unit that supplies the detection signal, display image information associated with the position information of the detection unit, and can be bent. As a result, a novel input / output device excellent in convenience or reliability can be provided. As a result, the input / output device can supply a detection signal based on a change in capacitance and position information of the detection unit that supplies the detection signal, display image information associated with the position information of the detection unit, and can be bent. As a result, a novel input / output device excellent in convenience or reliability can be provided.

[0285] Moreover, the input / output device 600 may include a flexible substrate FPC1 that is supplied with a signal supplied by the input device 620 or / and a flexible substrate FPC2 that supplies a signal including image information to the display unit 601. Moreover, the input / output device 600 may include a flexible substrate FPC1 that is supplied with a signal supplied by the input device 620 or / and a flexible substrate FPC2 that supplies a signal including image information to the display unit 601. Moreover, the input / output device 600 may include a flexible substrate FPC1 that is supplied with a signal supplied by the input device 620 or / and a flexible substrate FPC2 that supplies a signal including image information to the display unit 601.

[0286] Moreover, the input / output device 600 may include a protective layer 67p that protects the input / output device 600 by preventing the occurrence of scratches or / and an antireflection layer 667p that weakens the intensity of external light reflected by the input / output device 600. ​

[0287] The input / output device 600 also includes a scanning line drive circuit for supplying selection signals to the scanning lines of the display unit 601. The circuit 603g is electrically connected to the wiring 611 that supplies signals and the flexible substrate FPC2. The connector 614 has a terminal 619 to which the signal is input.

[0288] The individual elements constituting the input / output device 600 will be described below. The components cannot be clearly separated, and one component may serve as another or may contain a part of another. There is.

[0289] For example, the input device 620 having a colored layer at a position overlapping the multiple window portions 64 is 20 and also a color filter.

[0290] In addition, for example, an input / output device 600 in which an input device 620 is superimposed on a display unit 601 is The device 620 also serves as a display unit 601.

[0291] Overall Composition The input / output device 600 includes an input device 620 and a display unit 601 (see FIG. 17(A)). (see).

[0292] <<Input device 620>> The input device 620 includes a plurality of detection units 60U and a flexible base for supporting the detection units. For example, a plurality of detection units 60U can be arranged in a matrix of 40 rows and 15 columns. It is disposed on a flexible substrate 66 .

[0293] Window 64, colored layer and light-shielding layer BM The window 64 transmits visible light.

[0294] A colored layer that transmits light of a predetermined color is provided at a position overlapping the window portion 64. For example, A colored layer CFB that transmits light, a colored layer CFG that transmits green light, or a colored layer CFR that transmits red light (see Fig. 17(B)). is provided.

[0295] In addition to blue, green, and / or red, a colored layer that transmits white light or a colored layer that transmits yellow light, etc., a colored layer that transmits light of various colors can be provided.

[0296] A metal material, a pigment, a dye, etc. can be used for the colored layer.

[0297] A light-shielding layer BM is provided so as to surround the window portion 64. The light-shielding layer BM is less likely to transmit light than the window portion 64.

[0298] Carbon black, a metal oxide, a composite oxide containing a solid solution of a plurality of metal oxides, etc. can be used for the light-shielding layer BM.

[0299] A scanning line G1, a signal line DL, a wiring VPI, a wiring RES, and a wiring VRES as well as a detection circuit 69 are provided at a position overlapping the light-shielding layer BM.

[0300] In addition, a light-transmissive overcoat layer that covers the colored layer and the light-shielding layer BM can be provided.

[0301] 《Detection element C》 The detection element C has a first electrode 61, a second electrode 62, and an insulating layer 63 between the first electrode 61 and the second electrode 62 (see Fig. 18).

[0302] The first electrode 61 is formed, for example, in an island shape so as to be separated from other regions. In particular, a layer that can be manufactured in the same process as the first electrode 61 is preferably arranged close to the first electrode 61 so that the first electrode 61 is not recognized by the user of the input / output device 600. ​​​​​​​​ More preferably, the first electrode 61 and the layer disposed adjacent to the first electrode 61 are disposed in the gap. It is preferable to reduce the number of windows 64 as much as possible. A configuration without such a configuration is preferred.

[0303] A second electrode 62 is provided so as to overlap the first electrode 61. 2, an insulating layer 63 is provided between the first and second electrodes.

[0304] For example, the first electrode 61 or the second electrode 62 of the sensing element C placed in the atmosphere is electrically connected to the air. When an object with a different dielectric constant approaches, the capacitance of the sensing element C changes. When an object such as a smear approaches the sensing element C, the capacitance of the sensing element C changes. Child C can be used as a proximity detector.

[0305] For example, the capacitance of the sensing element C, which can be deformed, changes with deformation.

[0306] Specifically, when an object such as a finger touches the sensing element C, the first electrode 61 and the second electrode When the distance between the electrodes 62 becomes narrower, the capacitance of the sensing element C becomes larger. can be used as a contact detector.

[0307] Specifically, by bending the sensing element C, the first electrode 61 and the second electrode 62 are The spacing becomes narrower. This increases the capacitance of the sensing element C. can be used in the bend detector.

[0308] The first electrode 61 and the second electrode 62 include a conductive material.

[0309] For example, inorganic conductive materials, organic conductive materials, metals, conductive ceramics, etc. It can be used for the electrode 61 and the second electrode 62.

[0310] Specifically, a metal element selected from aluminum, chromium, copper, tantalum, titanium, molybdenum, tungsten, nickel, silver, or manganese, an alloy containing the above-described metal element as a component, or an alloy combining the above-described metal elements can be used. It can be used for the electrode 61 and the second electrode 62. An alloy containing the above-described metal element as a component, or an alloy combining the above-described metal elements can be used.

[0311] Alternatively, a conductive oxide such as indium oxide, indium tin oxide, indium zinc oxide, zinc oxide, or zinc oxide added with gallium can be used. Alternatively, a conductive oxide such as indium oxide, indium tin oxide, indium zinc oxide, zinc oxide, or zinc oxide added with gallium can be used.

[0312] Alternatively, graphene or graphite can be used. The film containing graphene can be formed, for example, by reducing a film containing graphene oxide formed in a film shape. Examples of the reduction method include a method of applying heat and a method of using a reducing agent. The film containing graphene can be formed, for example, by reducing a film containing graphene oxide formed in a film shape. Examples of the reduction method include a method of applying heat and a method of using a reducing agent. Examples of the reduction method include a method of applying heat and a method of using a reducing agent.

[0313] Alternatively, a conductive polymer can be used.

[0314] 《Detection Circuit 69》 The detection circuit 69 includes, for example, transistors M1 to M3. The detection circuit 69 also includes wirings for supplying a power supply potential and a signal. For example, it includes a signal line DL, a wiring VPI, a wiring CS, a scanning line G1, a wiring RES, and a wiring VRES. The specific configuration of the detection circuit 69 will be described in detail in Embodiment 6. The detection circuit 69 includes, for example, transistors M1 to M3. The detection circuit 69 also includes wirings for supplying a power supply potential and a signal. For example, it includes a signal line DL, a wiring VPI, a wiring CS, a scanning line G1, a wiring RES, and a wiring VRES. The detection circuit 69 also includes wirings for supplying a power supply potential and a signal. For example, it includes a signal line DL, a wiring VPI, a wiring CS, a scanning line G1, a wiring RES, and a wiring VRES. Note that the specific configuration of the detection circuit 69 will be described in detail in Embodiment 6. The specific configuration of the detection circuit 69 will be described in detail in Embodiment 6.

[0315] Note that the detection circuit 69 may be arranged in a region that does not overlap with the window portion 64. For example, by arranging a wiring in a region that does not overlap with the window portion 64, it is possible to easily visually recognize what is on one side of the detection unit 60U from the other side. Note that the detection circuit 69 may be arranged in a region that does not overlap with the window portion 64. For example, by arranging a wiring in a region that does not overlap with the window portion 64, it is possible to easily visually recognize what is on one side of the detection unit 60U from the other side. It is possible to easily visually recognize what is on one side of the detection unit 60U from the other side.

[0316] For example, transistors that can be formed in the same process can be used for transistors M1 to M3.

[0317] Transistor M1 has a semiconductor layer. For example, an element of Group 4, a compound semiconductor, or an oxide semiconductor can be used for the semiconductor layer. Specifically, a semiconductor containing silicon, a semiconductor containing gallium arsenide, or an oxide semiconductor containing indium can be applied.

[0318] Note that the configuration of a transistor in which an oxide semiconductor is applied to the semiconductor layer will be described in detail in Embodiment 6.

[0319] A material having conductivity can be applied to the wiring.

[0320] For example, an inorganic conductive material, an organic conductive material, a metal, or a conductive ceramic can be used for the wiring. Specifically, the same material as that which can be used for the first electrode 61 and the second electrode 62 can be applied.

[0321] Metal materials such as aluminum, gold, platinum, silver, nickel, titanium, tungsten, chromium, molybdenum, iron, cobalt, copper, or palladium, or alloy materials containing the metal materials can be used for the scanning line G1, the signal line DL, the wiring VPI, the wiring RES, and the wiring VRES.

[0322] The film formed on the base material 66 may be processed to form the detection circuit 69 on the base material 66.

[0323] Alternatively, the detection circuit 69 formed on another base material may be transferred to the base material 66.

[0324] Note that the manufacturing method of the detection circuit will be described in detail in Embodiment 6.

[0325] "Base material 66" An organic material, an inorganic material, or a composite material of an organic material and an inorganic material can be used for the flexible base material 66. It is possible.

[0326] 5 μm or more and 2500 μm or less, preferably 5 μm or more and 680 μm or less, more preferably 5 μm or more and 170 μm or less, more preferably 5 μm or more and 45 μm or less, more preferably 8 A material having a thickness of 25 μm or less can be used for the base material 66.

[0327] In addition, a material with suppressed permeation of impurities can be preferably used for the base material 66. For example , the water vapor transmission rate is 10 -5 g / m 2 ·day or less, preferably 10 -6 g / m 2 ·da y or less can be preferably used.

[0328] In addition, materials having approximately equal linear expansion coefficients can be preferably used for each material constituting the base material 66 For example, the linear expansion coefficient is 1×10 -3 / K or less, preferably 5×10 -5 / K or less, more preferably 1×10 -5 / K or less can be preferably used.

[0329] For example, an organic material such as a resin, a resin film, or a plastic film can be used for the base material 66 It can be used.

[0330] For example, an inorganic material such as a metal plate or a thin glass plate with a thickness of 10 μm or more and 50 μm or less can be used for the base material 66.

[0331] For example, a composite material formed by laminating a metal plate, a thin glass plate, or a film of an inorganic material to a resin film or the like using a resin layer can be used for the base material 66.

[0332] For example, a composite material in which fibrous or particulate metal, glass, or inorganic material is dispersed in a resin or a resin film can be used for the base material 66.

[0333] For example, a thermosetting resin or an ultraviolet curable resin can be used for the resin layer.

[0334] Specifically, a resin film or a resin plate such as polyester, polyolefin, polyamide, polyimide, polycarbonate, or acrylic resin can be used.

[0335] Specifically, non-alkali glass, soda lime glass, potassium glass, or crystal glass can be used.

[0336] Specifically, a metal oxide film, a metal nitride film, or a metal oxynitride film can be used. For example, a silicon oxide film, a silicon nitride film, a silicon oxynitride film, an alumina film, etc. can be applied.

[0337] Specifically, SUS or aluminum provided with an opening can be used.

[0338] Specifically, a resin having an acrylic, urethane, epoxy, or siloxane bond can be used.

[0339] For example, a laminate in which a flexible base material 66b, a barrier film 66a that prevents diffusion of impurities, and a resin layer 66c that bonds the base material 66b and the barrier film 66a are laminated can be suitably used for the base material 66 (see FIG. 18).

[0340] Specifically, a film including a laminated material in which a silicon oxynitride film with a thickness of 600 nm and a silicon nitride film with a thickness of 200 nm are laminated can be used for the barrier film 66a.

[0341] Specifically, a film including a laminated material in which a silicon oxynitride film with a thickness of 600 nm, a silicon nitride film with a thickness of 200 nm, a silicon oxynitride film with a thickness of 2 00 nm, a silicon oxynitride film with a thickness of 140 nm, and a silicon oxynitride film with a thickness of 100 nm are laminated in this order can be used for the barrier film 66a.

[0342] A resin film such as polyester, polyolefin, polyamide, polyimide, polycarbonate or acrylic resin, a resin plate, or a laminate including two or more of these can be used for the base material 66b.

[0343] For example, a material including a resin having a polyester, polyolefin, polyamide (nylon, aramid, etc.), poly imide, polycarbonate or acrylic, urethane, epoxy or siloxane bond can be used for the resin layer 66c.

[0344] 《Protective base material 67, protective layer 67p》 A flexible protective base material 67 or / and a protective layer 67p can be provided. The flexible protective base material 67 or the protective layer 67p prevents the occurrence of scratches and protects the input device 620.

[0345] For example, a resin film such as polyester, polyolefin, polyamide, polyimide, polycarbonate or acrylic resin, a resin plate, or a laminate can be used for the protective base material 67.

[0346] ​​​​​For example, a hard coat layer or a ceramic coat layer can be used for the protective layer 67p. Specifically, a layer containing a UV curable resin or aluminum oxide may be formed at a position overlapping the second electrode.

[0347] 《Display unit 601》 The display unit 601 includes a plurality of pixels 602 arranged in a matrix (see Fig. 17(C)).

[0348] For example, the pixel 602 includes a sub-pixel 602B, a sub-pixel 602G, and a sub-pixel 602R, and each sub-pixel includes a display element and a pixel circuit for driving the display element.

[0349] Note that the sub-pixel 602B of the pixel 602 is arranged at a position overlapping the coloring layer CFB, the sub-pixel 602G is arranged at a position overlapping the coloring layer CFG, and the sub-pixel 602R is arranged at a position overlapping the coloring layer CFR.

[0350] In the present embodiment, the case where an organic electroluminescence element that emits white light is applied to the display element will be described, but the display element is not limited to this.

[0351] For example, organic electroluminescence elements having different emission colors may be applied to each sub-pixel so that the color of the light emitted from each sub-pixel is different.

[0352] 《Substrate 610》 A flexible material can be used for the substrate 610. For example, a material that can be used for the substrate 66 can be applied to the substrate 610.

[0353] For example, a flexible substrate 610b, a barrier film 610a that prevents diffusion of impurities, and a base A resin layer 610c that bonds the material 610b and the barrier film 610a is laminated. The laminate can be suitably used for the base material 610 (see Fig. 18).

[0354] 《Sealing material 660》 The sealing material 660 bonds the base material 66 and the base material 610. The sealing material 660 has a refractive index greater than that of air. When extracting light from the sealing material 660 side, the sealing material 660 also serves as an optical bonding layer.

[0355] The pixel circuit and the light-emitting element (for example, the light-emitting element 650R) are located between the base material 610 and the base material 66.

[0356] 《Pixel configuration》 The sub-pixel 602R includes a light-emitting module 680R.

[0357] The sub-pixel 602R includes a pixel circuit that includes a light-emitting element 650R and a transistor 602t that can supply power to the light-emitting element 650R. The light-emitting module 680R includes a light-emitting element 650R and an optical element (for example, a colored layer CFR).

[0358] The light-emitting element 650R has a lower electrode, an upper electrode, and a layer containing a light-emitting organic compound between the lower electrode and the upper electrode.

[0359] The light-emitting module 680R has a colored layer CFR in the light extraction direction. The colored layer may be any layer that transmits light having a specific wavelength, for example, a layer that selectively transmits light exhibiting red, green, or blue. Note that other sub-pixels may be arranged so as to overlap with the window portion where the colored layer is not provided, and the light emitted from the light-emitting element without passing through the colored layer may be emitted.

[0360] Also, when the sealing material 660 is provided on the light extraction side, the sealing material 660 is in contact with the light-emitting element 650R and the color filter layer CFR.

[0361] The color filter layer CFR is located at a position overlapping the light-emitting element 650R. As a result, a part of the light emitted by the light-emitting element 650R passes through the color filter layer CFR and is emitted outside the light-emitting module 6 80R in the direction of the arrow shown in the figure.

[0362] There is a light-shielding layer BM surrounding the color filter layer (for example, the color filter layer CFR).

[0363] 《Configuration of Pixel Circuit》 An insulating film 621 covering the transistor 602t included in the pixel circuit is provided. The insulating film 621 can be used as a layer for flattening the unevenness caused by the pixel circuit. In addition, a laminated film including a layer capable of suppressing the diffusion of impurities can be applied to the insulating film 621. As a result, it is possible to suppress a decrease in the reliability of the transistor 602t and the like due to the diffusion of impurities. On the insulating film 621, a lower electrode is disposed, and a partition wall 628 is disposed on the insulating film 621 so as to overlap the end of the lower electrode.

[0364] The lower electrode sandwiches a layer containing a light-emitting organic compound between the upper electrode to form a light-emitting element (for example, the light-emitting element 650R). The pixel circuit supplies power to the light-emitting element.

[0365] Also, on the partition wall 628, there is a spacer for controlling the distance between the base material 66 and the base material 610.

[0366]

[0367] 《Configuration of Scanning Line Driving Circuit》 The scanning line driving circuit 603g(1) includes a transistor 603t and a capacitor 603c. ​​Note that transistors that can be formed on the same substrate in the same process as the pixel circuit can be used for the drive circuit.

[0368] 《Converter CONV》 Various circuits that can convert the detection signal DATA supplied by the detection unit 60U and supply it to the FPC1 can be used for the converter CONV (see FIGS. 17(A) and 18).

[0369] For example, the transistor M4 can be used for the converter CONV.

[0370] 《Other configurations》 The display unit 601 includes an antireflection layer 667p at a position overlapping the pixel. As the antireflection layer 667p, for example, a circularly polarized plate can be used.

[0371] The display unit 601 includes a wiring 611 that can supply signals, and a terminal 619 is provided on the wiring 611. Note that a flexible substrate FPC2 that can supply signals such as an image signal and a synchronization signal is electrically connected to the terminal 619.

[0372] Note that a printed wiring board (PWB) may be attached to the flexible substrate FPC2.

[0373] The display unit 601 has wirings such as scanning lines, signal lines, and power supply lines. Various conductive films can be used for the wirings.

[0374] Specifically, a metal element selected from aluminum, chromium, copper, tantalum, titanium, molybdenum, tungsten, nickel, yttrium, zirconium, silver, or manganese, an alloy containing the above-described metal element as a component, or an alloy combining the above-described metal elements, etc. can be used. ​ It is possible. In particular, it preferably contains one or more elements selected from aluminum, chromium, copper, tantalum, titanium, molybdenum, tungsten. In particular, an alloy of copper and manganese is suitable for microfabrication using a wet etching method.

[0375] Specifically, a two-layer structure in which a titanium film is laminated on an aluminum film, a two-layer structure in which a titanium film is laminated on a titanium nitride film, a two-layer structure in which a tungsten film is laminated on a titanium nitride film, a two-layer structure in which a tungsten film is laminated on a tantalum nitride film or a tungsten nitride film, a three-layer structure in which a titanium film and an aluminum film is laminated on the titanium film, and a titanium film is further formed thereon can be used.

[0376] Specifically, a film of a metal selected from titanium, tantalum, tungsten, molybdenum, chromium, neodymium, scandium, or an alloy film containing a plurality of metals selected from these, or a film containing a nitride of a metal selected from these can be laminated.

[0377] Alternatively, a light-transmissive conductive material containing indium oxide, tin oxide, or zinc oxide may be used.

[0378] This embodiment can be implemented in appropriate combination with at least a part of other embodiments described in this specification.

[0379] (Embodiment 6) In this embodiment, the configuration and driving method of a detection circuit that can be used for the detection unit of the input / output device according to one aspect of the present invention will be described with reference to FIG. 19.

[0380] FIG. 19 illustrates the configuration and driving method of the detection circuit 69 and the converter CONV according to an aspect of the present invention. It is a diagram for explaining.

[0381] FIG. 19(A) is a circuit diagram for explaining the configuration of the detection circuit 69 and the converter CONV according to an aspect of the present invention, and FIGS. 19(B-1) and 19(B-2) are timing charts for explaining the driving method. It is a circuit diagram, and FIGS. 19(B-1) and 19(B-2) are timing charts for explaining the driving method. It is a chart.

[0382] The detection circuit 69 according to an aspect of the present invention includes a first transistor M1 whose gate is electrically connected to the first electrode 61 of the detection element C, and the first electrode is electrically connected to a wiring VPI that can supply, for example, a ground potential (see FIG. 19(A)). Further, it may be configured to include a second transistor M2 whose gate is electrically connected to a scanning line G1 that can supply a selection signal, the first electrode is electrically connected to the second electrode of the first transistor M1, and the second electrode is electrically connected to a signal line DL that can supply a detection signal DATA, for example. (See FIG. 19(A)).

[0383] Also, it may be configured to include a third transistor M3 whose gate is electrically connected to a wiring RES that can supply a reset signal, the first electrode is electrically connected to the first electrode 61 of the detection element C, and the second electrode is electrically connected to a wiring VRES that can supply a ground potential, for example. (See FIG. 19(A)). The capacitance of the detection element C changes, for example, when something approaches the first electrode 61 or the second electrode 62, or when the distance between the first electrode 61 and the second electrode 62 changes. As a result, the detection unit 60U generates a detection signal DAT based on the change in the capacitance of the detection element C. (See FIG. 19(A)).

[0384] Also, it may be configured to include a third transistor M3 whose gate is electrically connected to a wiring RES that can supply a reset signal, the first electrode is electrically connected to the first electrode 61 of the detection element C, and the second electrode is electrically connected to a wiring VRES that can supply a ground potential, for example. (See FIG. 19(A)). The capacitance of the detection element C changes, for example, when something approaches the first electrode 61 or the second electrode 62, or when the distance between the first electrode 61 and the second electrode 62 changes. As a result, the detection unit 60U generates a detection signal DAT based on the change in the capacitance of the detection element C. (See FIG. 19(A)).

[0385] The capacitance of the detection element C changes, for example, when something approaches the first electrode 61 or the second electrode 62, or when the distance between the first electrode 61 and the second electrode 62 changes. As a result, the detection unit 60U generates a detection signal DAT based on the change in the capacitance of the detection element C. This is due to the proximity of something to the first electrode 61 or the second electrode 62, or a change in the distance between the first electrode 61 and the second electrode 62. Based on this, the detection unit 60U generates a detection signal DAT based on the change in the capacitance of the detection element C. can supply A.

[0386] In addition, the detection unit 60U includes a wiring CS that can supply a control signal capable of controlling the potential of the second electrode 62 of the detection element C.

[0387] Note that a node where the first electrode 61 of the detection element C, the gate of the first transistor M1, and the first electrode of the third transistor are electrically connected is referred to as node A.

[0388] The wiring VRES and the wiring VPI can supply, for example, a ground potential, and the wiring VPO and the wiring BR can supply, for example, a high power supply potential.

[0389] In addition, the wiring RES can supply a reset signal, the scanning line G1 can supply a selection signal, and the wiring CS can supply a control signal for controlling the potential of the second electrode 62 of the detection element C.

[0390] In addition, the signal line DL can supply a detection signal DATA, and the terminal OUT can supply a signal converted based on the detection signal DATA.

[0391] Note that various circuits capable of converting the detection signal DATA and supplying it to the terminal OUT can be used for the converter CONV. For example, by electrically connecting the converter CONV to the detection circuit 69, a source follower circuit or a current mirror circuit or the like may be configured.

[0392] Specifically, a source follower circuit can be configured using a converter CONV using the transistor M4 (see Fig. 19(A)). Note that the first transistor M1 to the third transistor ​ A transistor that can be fabricated in the same process as transistor M3 can be used as transistor M4. This is also acceptable.

[0393] In addition, transistors M1 to M3 have a semiconductor layer. For example, an element from Group 4, a compound semiconductor, or an oxide semiconductor can be used for the semiconductor layer. Specifically, a semiconductor containing silicon, a semiconductor containing gallium arsenide, or an oxide semiconductor containing indium can be applied. Note that the configuration of a transistor using an oxide semiconductor for the semiconductor layer will be described in detail in Embodiment 5.

[0394]

[0395]

[0396] <Driving method of detection circuit 69> The driving method of detection circuit 69 will be described.

[0396] <<First step>> In the first step, after turning on the third transistor and then turning it off, a reset signal is supplied to the gate to set the potential of the first electrode 61 of the detection element C to a predetermined potential (see period T1 in FIG. 19(B-1)). Specifically, the reset signal is supplied to wiring RES. The third transistor to which the reset signal is supplied sets the potential of node A to, for example, the ground potential (see FIG. 19(A)). (Refer to period T1 in FIG. 19(B-1).)

[0397]

[0398] <<Second step>> In the second step, a selection signal for turning on the second transistor M2 is supplied to the gate, and the second electrode of the first transistor is electrically connected to the signal line DL.

[0399] Specifically, the selection signal is supplied to scanning line G1. The second transistor to which the selection signal is supplied...

[0399] Specifically, the selection signal is supplied to scanning line G1. The second transistor to which the selection signal is supplied... The distorter M2 electrically connects the second electrode of the first transistor to the signal line DL (see Fig. 1 and period T2 in Fig. 9(B-1)).

[0400] 《Third Step》 In the third step, a control signal is supplied to the second electrode of the sensing element C, and a potential that changes based on the control signal and the capacitance of the sensing element C is supplied to the gate of the first transistor M1 . Specifically, a rectangular control signal is supplied to the wiring CS. By supplying the rectangular control signal to the second electrode 6 2, the potential of node A rises based on the capacitance of the sensing element C (see the latter half of period T2 in Fig. 19(

[0401] B-1)). For example, when the sensing element is placed in the air and something with a higher dielectric constant than air is placed close to the second electrode 62 of the sensing element C, the capacitance of the sensing element C appears to increase .

[0402] . As a result, the change in the potential of node A caused by the rectangular control signal becomes smaller compared to the case where nothing with a higher dielectric constant than air is placed close by (see the solid line in Fig. 19(B-2) ).

[0403] ). )

[0404] 《Fourth Step》 In the fourth step, a signal resulting from the change in the potential of the gate of the first transistor M1 is supplied to the signal line DL .

[0405] For example, a change in current resulting from the change in the potential of the gate of the first transistor M1 is supplied to the signal line DL

[0406] The converter CONV converts the change in current flowing through the signal line DL into a change in voltage and outputs it

[0407] 《Step 5》 In Step 5, a selection signal for turning off the second transistor M2 is supplied to the gate.

[0408] This embodiment can be implemented in appropriate combination with at least some of the other embodiments described herein.

[0409] (Embodiment 7) In this embodiment, examples of an electronic device or a lighting device to which a display device according to an aspect of the present invention is applied will be described with reference to the drawings.

[0410] Examples of an electronic device to which a display device having a flexible shape is applied include, for example, a television device (also referred to as a television or a television receiver), a monitor for a computer, a digital camera, a digital video camera, a digital photo frame, a mobile phone (also referred to as a mobile phone or a mobile phone device), a portable game machine, a portable information terminal, an audio reproduction device, a pachinko machine and other large game machines.

[0411] In addition, it is also possible to incorporate a lighting device or a display device along the inner wall or outer wall of a house or building, or along the curved surface of the interior or exterior decoration of an automobile.

[0412] FIG. 20(A) shows an example of a mobile phone. The mobile phone 7400 includes, in addition to a display unit 7402 incorporated in a housing 740 1, operation buttons 7403, an external connection port 7404, a speaker 7405, a microphone 7406, and the like. Note that the mobile phone 7400 is manufactured by using a display device for the display unit 7402.

[0413] ​​​​​​The mobile phone 7400 shown in Fig. 20(A) can input information by touching the display unit 7402 with a finger or the like. Also, any operations such as making a call or inputting characters can be performed by touching the display unit 7402 with a finger or the like.

[0414] In addition, by operating the operation button 7403, the power can be turned on and off, and the type of the image displayed on the display unit 7402 can be switched. For example, it can be switched from the mail creation screen to the main menu screen.

[0415] Here, a display device according to an aspect of the present invention is incorporated in the display unit 7402. Therefore, a mobile phone with a curved display unit and high reliability can be obtained.

[0416] Fig. 20(B) shows an example of a list band type display device. The portable display device 7100 includes a housing 7101, a display unit 7102, an operation button 7103, and a transmission / reception device 7104.

[0417] The portable display device 7100 can receive a video signal by the transmission / reception device 7104 and display the received video on the display unit 7102. Also, an audio signal can be transmitted to other receiving devices.

[0418] In addition, by the operation button 7103, operations such as turning on and off the power, switching the displayed video, or adjusting the volume of the audio can be performed.

[0419] Here, a display device according to an aspect of the present invention is incorporated in the display unit 7102. Therefore, a portable display device with a curved display unit and high reliability can be obtained.

[0420] ​​​​​​​​​​ Figures 20(C) to 20(D) show an example of a lighting device. The lighting device 7210 and the lighting device 7220 each include a base 7201 provided with an operation switch 7203 and a light emitting part supported by the base 7201.

[0421] The light emitting part 7212 included in the lighting device 7210 shown in Figure 20(C) has a configuration in which two convexly curved light emitting parts are symmetrically arranged. Therefore, the lighting device 7210 can illuminate all directions.

[0422] The lighting device 7220 shown in Figure 20(D) includes a concave-curved light emitting part 7222. Therefore, since the light emitted from the light emitting part 7222 is condensed on the front surface of the lighting device 7220, it is suitable for illuminating a specific range brightly.

[0423] In addition, since each light emitting part included in the lighting device 7210 and the lighting device 7220 has flexibility, the light emitting part can be fixed with a member such as a plastic member or a movable frame, and the light emitting surface of the light emitting part can be

[0424] freely curved according to the application. Here, a display device according to one aspect of the present invention is incorporated in each light emitting part included in the lighting device 7210 and the lighting device 7220.

[0425] Figure 21(A) shows an example of a portable display device. The display device 7300 includes a housing 7301, a display part 7302, an operation button 7303, a drawer member 7304, and a control part 7305.

[0426] The display device 7300 includes a flexible display part 7302 wound in a roll shape inside a cylindrical housing 7301. The display part 7302 has a first substrate on which a light-shielding layer or the like is formed, and a second substrate on which transistors or the like are formed. The display part 7302 is wound in the housing 7301 such that the second substrate is always on the outside.

[0427] Also, the display device 7300 can receive a video signal by the control part 7305 and display the received video on the display part 7302. Further, the control part 7305 is provided with a battery. Also, the control part 7305 may be provided with a connector and configured to directly supply a video signal and power.

[0428] Also, by the operation button 7303, operations such as turning on and off the power and switching the displayed video can be performed.

[0429] FIG. 21(B) shows a state in which the display part 7302 is pulled out by the pulling member 7304. In this state, a video can be displayed on the display part 7302. Also, it can be easily operated with one hand by the operation button 7303 arranged on the surface of the housing 7301.

[0430] Note that a frame for reinforcement may be provided at the end of the display part 7302 so that the display part 7302 does not bend when the display part 7302 is pulled out.

[0431] In addition to this configuration, a speaker may be provided in the housing, and the audio may be output by an audio signal received together with the video signal.

[0432] The display device according to one aspect of the present invention is incorporated in the display part 7302. Therefore, the table Since the display unit 7302 is a flexible and highly reliable display device, the display device 7300 can be a lightweight and highly reliable display device.

[0433] Note that as long as the display device according to an aspect of the present invention is provided, it goes without saying that the above-described electronic devices and lighting devices are not particularly limited.

[0434] The configurations and methods shown in the present embodiment, etc., can be used in appropriate combination with the configurations and methods shown in other embodiments, etc.

Description of Reference Numerals

[0435] 10 Display device 11 Display area 15 Column 16 Wall 21 Interior member 22 Exterior member 23 Support member 25 Antenna 26 Light-shielding portion 27 Wireless signal 50 Electronic device 51a Support 51b Support 51c Support 52 Hinge 52a Hinge 52b Hinge 53a Substrate 53b Substrate 53c Substrate 54a Terminal 54b Terminal 54c Terminal 55a Battery 55b Battery 55c Battery 60U Detection unit 61 Electrode 62 Electrode 63 Insulating layer 64 Window portion 66 Base material 66a Barrier film​ 66b base material 66c resin layer 67 protective base material 67p protective layer 69 detection circuit 70 electronic device 100 display panel 100a display panel 100b display panel 100c display panel 100d display panel 100e display panel 100f display panel 100g display panel 100h display panel 100i display panel 100j display panel 101 display area 101a display area 101b display area 101c display area 101d display area 110 area 110a area 110b area 110c area 110d area 112 FPC 112a FPC 112b FPC 112c FPC 120 area 120b area 120c area 123 FPC 131 resin layer 132 protective substrate 133 resin layer 134 protective substrate 141 pixel 141a pixel 141b pixel 142a wiring 142b wiring 143a circuit 143b circuit 145 wiring 150 Wireless module 151 Substrate 152 Substrate 153 Adhesive layer 300 Touch panel 301 Display unit 302 Pixel 302B Sub-pixel 302G Sub-pixel 302R Sub-pixel 302t Transistor 303c Capacitor 303g(1) Scanning line drive circuit 303g(2) Imaging pixel drive circuit 303s(1) Image signal line drive circuit 303s(2) Imaging signal line drive circuit 303t Transistor 308 Imaging pixel 308p Photoelectric conversion element 308t Transistor 309 FPC 310 Substrate 310a Barrier film 310b Substrate 310c Adhesive layer 311 Wiring 319 Terminal 321 Insulating film 328 Partition wall 329 Spacer 350R First light-emitting element 351R Lower electrode 352 Upper electrode 353 Layer 353a Light-emitting unit 353b Light-emitting unit 354 Intermediate layer 360 Encapsulant 367BM Light-shielding layer 367p Anti-reflection layer 367R Coloring layer 370 Opposite substrate 370a Barrier film 370b Substrate 370c Adhesive layer 380B Light-emitting module 380G Light Emitting Module 380R Light Emitting Module 500 Touch Panel 500B Touch Panel 501 Display Unit 502R Sub-Pixel 502t Transistor 503c Capacitance 503g Scanning Line Driving Circuit 503t Transistor 509 FPC 510 Substrate 510a Barrier Film 510b Substrate 510c Adhesive Layer 511 Wiring 519 Terminal 521 Insulating Film 528 Partition Wall 550R First Light Emitting Element 560 Encapsulant 567BM Light Shielding Layer 567p Anti-Reflection Layer 567R Coloring Layer 570 Substrate 570a Barrier Film 570b Substrate 570c Adhesive Layer 580R Light Emitting Module 590 Substrate 591 Electrode 592 Electrode 593 Insulating Layer 594 Wiring 595 Touch Sensor 597 Adhesive Layer 598 Wiring 599 Connection Layer 600 Input / Output Device 601 Display Unit 602 Pixel 602B Sub-Pixel 602G Sub-Pixel 602R Sub-Pixel 602t Transistor 603c Capacitance 603g Scanning Line Driving Circuit 603t transistor 610 base material 610a barrier film 610b base material 610c resin layer 611 wiring 619 terminal 620 input device 621 insulating film 628 partition wall 650R light-emitting element 660 encapsulant 667p antireflection layer 680R light-emitting module 7100 portable display device 7101 housing 7102 display section 7103 operation button 7104 transceiver 7201 base 7203 operation switch 7210 lighting device 7212 light-emitting section 7220 lighting device 7222 light-emitting section 7300 display device 7301 housing 7302 display section 7303 operation button 7304 drawer member 7305 control section 7400 mobile phone 7401 housing 7402 display section 7403 operation button 7404 external connection port 7405 speaker 7406 microphone

Claims

1. A display device having a first flexible display panel and a second flexible display panel, the first display panel has a first region capable of transmitting visible light, a second region capable of blocking visible light, and a third region capable of performing display; the second display panel has a fourth region capable of transmitting visible light, a fifth region capable of blocking visible light, and a sixth region capable of displaying, the third region of the first display panel and the fourth region of the second display panel have regions that are provided so as to overlap with each other, a resin layer covering the third region of the first display panel and the sixth region of the second display panel; Display device.

2. A display device having a first flexible display panel and a second flexible display panel, the first display panel has a first region capable of transmitting visible light, a second region capable of blocking visible light, and a third region capable of performing display; the second display panel has a fourth region capable of transmitting visible light, a fifth region capable of blocking visible light, and a sixth region capable of displaying, a first terminal is provided in the second region of the first display panel; a second terminal is provided in the fifth region of the second display panel; the third region of the first display panel and the fourth region of the second display panel have regions that are provided so as to overlap with each other, the second region of the first display panel and the fourth region of the second display panel have regions that are provided so as to overlap with each other, the first terminal is disposed on a rear surface side of the second display panel, a resin layer covering the third region of the first display panel and the sixth region of the second display panel; Display device.

3. In claim 1 or 2, a region in which a height of a display surface in the third region of the first display panel and a height of a display surface in the sixth region of the second display panel coincide with each other; Display device.

4. In any one of claims 1 to 3, a difference in refractive index between the resin layer and a member on the display surface side of the first display panel is 20% or less; Display device.

5. In any one of claims 1 to 4, a difference in refractive index between the resin layer and a member on the display surface side of the second display panel is 20% or less; Display device.

Images