Display device

Abstract

To provide a touch screen allowed to enhance the accuracy of sensing or the sensitivity of detection.SOLUTION: A touch screen comprises a first conductive layer, a second conductive layer, a plurality of display elements and a scan line. The first conductive layer has a first portion as a linear portion parallel to a first direction, in a part of a contour thereof in plan view. The second conductive layer has a second portion as a linear portion parallel to the first direction, in a part of a contour thereof in plan view. The first portion and the second portion are provided opposed. The display elements are provided in positions not overlapping with the first and second conductive layers. Meanwhile, the scan line has a portion extending in the second direction. The first and second directions have a definition angle of 30 degrees or greater and 60 degrees or smaller.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] One aspect of the present invention relates to an input device. One aspect of the present invention relates to a display device. The present invention relates to an input / output device. In particular, one aspect of the present invention relates to a touch panel.

[0002] Note that one aspect of the present invention is not limited to the above technical field. The technical field of one aspect of the present invention includes, as an example, semiconductor devices, display devices, light-emitting devices, power storage devices, storage devices, electronic devices, lighting devices , input devices, input / output devices, their driving methods, or their manufacturing methods. can be cited.

[0003] Note that in this specification and the like, the semiconductor device refers to all devices that can function by utilizing semiconductor characteristics. Semiconductor elements such as transistors, semiconductor circuits, arithmetic units, and storage devices are one aspect of semiconductor devices. Imaging devices, display devices, liquid crystal display devices, light-emitting devices, input devices, input / output devices, electro-optical devices, power generation devices (including thin-film solar cells, organic thin-film solar cells, etc.), and electronic devices may have semiconductor devices.

Background Art

[0004] In recent years, display devices equipped with touch sensors as position input means have been put into practical use. Display devices equipped with touch sensors are called touch panels or touch screens (hereinafter, simply referred to as "touch panels"). For example, portable information terminals equipped with touch panels include smartphones and tablet terminals.

[0005] Also, as display devices, typically liquid crystal display devices, organic EL (Electro Lu ​​​luminescence) elements, light-emitting diodes (LEDs: Light Emitting Diode), and other light-emitting devices, and electronic displays that perform display by electrophoresis or the like such as electronic paper.

[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 and the like, 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 described in Patent Document 1.

[0007] Also, a touch panel is provided with, for example, a pressure-sensitive sensor array or a capacitance-type sensor array so as to overlap the display panel, and the position where it is touched is detected by touching the substrate of the sensor array with a fingertip or an input pen (also called a stylus).

[0008] Patent Document 2 discloses a configuration of a touch panel provided with a touch sensor on the display screen of an electroluminescence display device.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0010] To more precisely obtain the position information of a detection object that touches a touch sensor or a touch panel Therefore, higher sensitivity of the touch sensor is required.

[0011] One aspect of the present invention is to provide an input device or an input / output device capable of enhancing detection accuracy as one of the problems. Or, one of the problems is to provide an input device or an input / output device capable of enhancing detection sensitivity. Or, one of the problems is to provide a novel input device or an input / output device

[0012] Note that the description of these problems does not prevent the existence of other problems. Note that one aspect of the present invention is not required to solve all of these problems. Note that other problems can be extracted from the descriptions in the specification, drawings, claims, etc.

Means for Solving the Problems

[0013] One aspect of the present invention is a touch panel including a first conductive layer, a second conductive layer, a plurality of display elements, a scanning line, and. The first conductive layer has a first portion which is a straight line portion parallel to the first direction in a part of the contour in a plan view. The second conductive layer has a second portion which is a straight line portion parallel to the first direction in a part of the contour in a plan view. The first portion and the second portion are provided to face each other. The display elements are provided at positions that do not overlap with the first conductive layer and the second conductive layer. The scanning line has a portion extending in the second direction. Also characterized in that the angle formed by the first direction and the second direction is 30 degrees or more and 60 degrees or less

[0014] ​​​​​​In addition, in the above, the first conductive layer and the second conductive layer each have a lattice shape intersecting in the first direction and the direction perpendicular to the first direction, and it is preferable that the lattice openings and the display elements are arranged overlapping each other.

[0015] In addition, in the above, the display element preferably has a polygonal shape having two sides parallel to the first direction in plan view.

[0016] In addition, in the above, it has a first substrate and a second substrate, and the first conductive layer, the second conductive layer, the display element, and the scanning line are preferably located between the first substrate and the second substrate. At this time, it has a light-shielding layer having a function of shielding visible light. The display element and the scanning line are provided on the first substrate, and the first conductive layer, the second conductive layer, and the light-shielding layer are provided on the second substrate. The light-shielding layer is preferably located between the first conductive layer and the second substrate and between the second conductive layer and the second substrate.

[0017] In addition, in the above, it is preferable that the first conductive layer and the second conductive layer are formed on the same plane.

[0018] In addition, in the above, the distance between the first portion and the second portion is preferably 1 μm or more and 10 mm or less.

[0019] Another aspect of the present invention is a touch panel module having the above touch panel and an FPC.

[0020] Another aspect of the present invention has at least one of the above touch panel or touch panel module, and an antenna, a button, a battery, a speaker, a microphone, or a lens. It is an electronic device to be used.

Advantages of the Invention

[0021] According to one aspect of the present invention, an input device or an input / output device capable of enhancing detection accuracy can be provided. Or, an input device or an input / output device capable of enhancing detection sensitivity can be provided. Or, a novel input device or an input / output device can be provided. It can be provided. Or, a novel input device or an input / output device can be provided. It can be provided.

[0022] Note that the description of these effects does not prevent the existence of other effects. Note that one aspect of the present invention does not necessarily have to have all of these effects. Note that other effects can be extracted from the description in the specification, drawings, claims, etc. Note that one aspect of the present invention does not necessarily have to have all of these effects. Note that other effects can be extracted from the description in the specification, drawings, claims, etc. Note that other effects can be extracted from the description in the specification, drawings, claims, etc.

Brief Description of the Drawings

[0023]

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Embodiments for Carrying Out the Invention

[0024] 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 the form and details can be variously changed without departing from the spirit and scope of the present invention. Therefore, the present invention is not to be construed as limited to the description of the embodiments shown below.

[0025] In the configuration of the invention described below, the same parts or parts having the same function are commonly used with the same reference numerals among different drawings, and the repeated description thereof is omitted. Also, when referring to the same function, the hatching pattern may be the same and may not

[0026] be particularly labeled. Note that in each drawing described in this specification, the size of each component, the thickness of the layer, or the area may be exaggerated for clarity. Therefore, it is not necessarily limited to that scale.

[0027] Note that ordinal numbers such as "first" and "second" in this specification are attached to avoid confusion of components and are not numerically limiting.

[0028] A transistor is a type of semiconductor device and can realize operations such as amplification of current or voltage, and switching operations for controlling conduction or non-conduction. The transistor in this , including IGFET (Insulated Gate Field Effect Trans istor) and thin film transistors (TFT: Thin Film Transistor ).

[0029] (Embodiment 1) In this embodiment, a configuration example of an input device (touch sensor) according to an aspect of the present invention, and a configuration example of an input / output device (touch panel) including the input device according to an aspect of the present invention and a display device (display panel) will be described with reference to the drawings.

[0030] Hereinafter, the case where a capacitance-type touch sensor is applied as a touch sensor according to an aspect of the present invention will be described.

[0031] Note that in this specification and the like, a touch panel has a function of displaying (outputting) an image or the like on a display surface, and a function of detecting that a detection object such as a finger or a stylus touches or approaches the display surface. Therefore, a touch panel is an aspect of an input / output device.

[0032] Also, in this specification and the like, a touch panel module refers to a touch panel substrate to which a connector such as an FPC (Flexible P rint Circuit) or a TCP (Tape Carrier Packag e) is attached, or a touch panel substrate on which an IC (integrated circuit) is mounted by a COG (Chip On G lass) method, or may simply be called a touch panel.

[0033] The capacitance-type touch sensor applicable to an aspect of the present invention includes a pair of conductive layers. A capacitance is formed between the pair of conductive layers. When a detection object touches or approaches the pair of conductive layers​​​​​ Detection is performed by utilizing the change in the capacitance between a pair of conductive layers when they come into contact with each other. This can be achieved.

[0034] As the capacitance method, there are a surface capacitance method, a projected capacitance method, etc. As the projected capacitance method, there are a self-capacitance method, a mutual-capacitance method, etc. Using the mutual-capacitance method is preferable because it enables simultaneous multi-point detection.

[0035] A pair of conductive layers has a straight portion in a part of the contour in plan view. Also, the two conductive layers are arranged to face each other such that their respective straight portions are parallel. With such a configuration it is possible to increase the magnitude of the capacitance formed between the two conductive layers. Also, in the portion where the two conductive layers face each other in parallel, since the electric field lines generated when a potential difference is applied between the two conductive layers are uniformly distributed in density, it is possible to suppress the occurrence of differences in detection sensitivity depending on the location. Therefore, a touch sensor with high detection accuracy can be realized.

[0036] A touch panel according to one aspect of the present invention includes a touch sensor and a display panel (display device) that displays an image. The touch sensor is provided so as to overlap the display surface side of the display panel.

[0037] Also, it is preferable to provide the display element of the display panel and a pair of conductive layers constituting the touch sensor so that they do not overlap. By doing so, it is possible to prevent the brightness of the image displayed by the touch panel from decreasing, and to realize a touch panel with high visibility. Furthermore, power consumption can be reduced.

[0038] The direction of the straight portions of the pair of conductive layers is preferably inclined at approximately 45 degrees with respect to the horizontal or vertical direction of the display image displayed on the display panel. For example, the angle formed by the extension direction of the inspection lines (also referred to as gate lines) of the display panel and the direction of the straight portions of the conductive layers is preferably 40 degrees or more and 50 degrees or less.

[0039] In addition, when the pair of conductive layers has a lattice shape (also referred to as a mesh shape), it is preferable because the conductivity of the conductive layers can be improved. Further, when the pair of conductive layers has a lattice shape , the extending direction of the lattice preferably has a portion extending in a direction parallel to the straight portion and a portion extending in a direction intersecting with the direction parallel to the straight portion.

[0040] In addition, when the pair of conductive layers has a lattice shape, it is preferable that the openings of the lattice and the display elements are arranged so as to overlap in a plan view. At this time, if the outline of the display element in a plan view is a polygon having sides parallel to the extending direction of the lattice, it is preferable because the aperture ratio can be increased. Alternatively, it is preferable that the outline of the display element in a plan view is a polygon having two sides parallel to the extending direction of the straight portion of the conductive layer, or a closed curve having a straight portion in part.

[0041] More specifically, for example, the following configuration can be adopted.

[0042] [Configuration Example] Hereinafter, as an example of the input / output device according to one aspect of the present invention, a configuration example of a touch panel will be described with reference to the drawings.

[0043] [Configuration Example of Touch Panel] FIG. 1(A) is a schematic perspective view of a touch panel 100 according to one aspect of the present invention. Also, FIG. 1 (B) is a perspective schematic diagram of the unfolded view of Fig. 1(A). For clarity, only representative constituent elements are shown. Also, in Fig. 1(B), some constituent elements (substrate 30, substrate 72, etc.) are only outlined by dashed lines.

[0044] The touch panel 100 has an input device 10 and a display panel 70, and these are stacked on top of each other.

[0045] The input device 10 has a substrate 30. On the substrate 30, electrodes 31, electrodes 32, a plurality of wirings 41, and a plurality of wirings 42 are provided. Also, on the substrate 30, an FPC 50 that is electrically connected to each of the plurality of wirings 41 and the plurality of wirings 42 is attached. Here, an example in which an IC 51 is provided on the FPC 50 is shown.

[0046] As the input device 10, for example, a capacitive touch sensor can be applied. Below, the case of applying a projection type capacitive touch sensor will be described.

[0047] Note that it is not limited to this, and various sensors capable of detecting the proximity or contact of a detected object such as a finger or a stylus can also be applied to the input device 10.

[0048] Note that the more specific configuration of the input device 10 will be described later.

[0049] The display panel 70 has a substrate 71 and a substrate 72 that are provided facing each other. Also, on the substrate 71 a display unit 81, a drive circuit 82, a wiring 83, etc. are provided. Also, on the substrate 71, an FPC 73 that is electrically connected to the wiring 83 is provided. Here, an example in which an IC 74 is provided on the FPC 73 is shown.

[0050] The display unit 81 is an area where an image is displayed and has a plurality of pixels. FIG. 1(B) shows a schematic diagram of a part of the display unit 81 enlarged. A pixel has at least one display element 60 and preferably includes a transistor and the display element 60. As the display element 60, typically, a light-emitting element such as an organic EL element or a liquid crystal element can be used and so on.

[0051] The drive circuit 82 can be an applicable circuit that drives the pixels of the display unit 81, such as a scan line drive circuit or a signal line drive circuit. Here, the case where a scan line drive circuit is applied as the drive circuit 82 will be described

[0052] The wiring 83 has a function of transmitting signals and power to the display unit 81 and the drive circuit 82. The signals and power are input to the wiring 83 from the outside via the FPC 73 or from the IC 74

[0053] The display unit 81 has a plurality of scan lines (also called gate lines) 8 7 that are electrically connected to the gates of the transistors of the pixels. The scan line 87 is a wiring that is electrically connected to the gates of the transistors of the pixels. The drive circuit 82 can sequentially supply signals for selecting a plurality of pixels electrically connected to one scan line 87 to each scan line 87

[0054] Here, in FIG. 1(B), the extending direction of the scan line 87 is indicated by an arrow as the direction 80 In the configuration shown in FIG. 1(B), the case where the direction orthogonal to the side (outline) on the side where the drive circuit 82 of the display unit 81 is provided is parallel to the direction 80 is shown. In the case where the outline of the display unit 81 is not rectangular or square, etc., the outline of the display unit 81 and the direction 80 are not orthogonal ​​​​​​​​​There are cases. Note that the scanning line 87 does not necessarily have to be straight and may be partially curved or bent according to the pixel configuration. At this time, the direction of the straight line connecting the two end points of the scanning line 87 corresponds to the direction 80. Or, the direction of the straight line connecting the two end points when the scanning line 87 is cut out at a part overlapping with the display unit 81 corresponds to the direction 80. Also, the direction 80 can be rephrased as the direction parallel to the arrangement direction of the pixels (or sub-pixels) electrically connected to one scanning line 87. It may be in a shape that is partially curved or bent. At this time, the direction of the straight line connecting the two end points of the scanning line 87 corresponds to the direction 80. Or, when the scanning line 87 is cut out at a part overlapping with the display unit 81, the direction of the straight line connecting the two end points corresponds to the direction 80. Also, the direction 80 can be rephrased as the direction parallel to the arrangement direction of the pixels (or sub-pixels) electrically connected to one scanning line 87. In FIGS. 1(A) and 1(B), an example in which an IC 74 mounted by a COF (Chip On Film) method is provided on the FPC 73 is shown. The IC 74 can be an IC that functions as, for example, a scanning line driving circuit or a signal line driving circuit. When the display panel 70 has a circuit that functions as a scanning line driving circuit and a signal line driving circuit, or when a circuit that functions as a scanning line driving circuit or a signal line driving circuit is provided outside and a signal for driving the display panel 70 is input via the FPC 73, it may be configured without the IC 74. Also, the IC 74 may be directly mounted on the substrate 71 by a COG (Chip On Glass) method or the like.

[0055] In FIGS. 1(A) and 1(B), an example in which an IC 74 mounted by a COF (Chip On Film) method is provided on the FPC 73 is shown. The IC 74 can be an IC that functions as, for example, a scanning line driving circuit or a signal line driving circuit. Note that when the display panel 70 has a circuit that functions as a scanning line driving circuit and a signal line driving circuit, or when a circuit that functions as a scanning line driving circuit or a signal line driving circuit is provided outside and a signal for driving the display panel 70 is input via the FPC 73, it may be configured without the IC 74. Also, the IC 74 may be directly mounted on the substrate 71 by a COG (Chip On Glass) method or the like. it may be configured without the IC 74. Also, the IC 74 may be directly mounted on the substrate 71 by a COG (Chip On Glass) method or the like. it may be configured without the IC 74. Also, the IC 74 may be directly mounted on the substrate 71 by a COG (Chip On Glass) method or the like. it may be configured without the IC 74. Also, the IC 74 may be directly mounted on the substrate 71 by a COG (Chip On Glass) method or the like. it may be configured without the IC 74. Also, the IC 74 may be directly mounted on the substrate 71 by a COG (Chip On Glass) method or the like. it may be configured without the IC 74. Also, the IC 74 may be directly mounted on the substrate 71 by a COG (Chip On Glass) method or the like.

[0056] 〔Configuration example of input device〕 FIG. 2(A) shows a schematic top view of the input device 10. The input device 10 has a plurality of electrodes 31, a plurality of electrodes 32, a plurality of wirings 41, and a plurality of wirings 42 on the substrate 30. Also, an FPC 50 electrically connected to each of the plurality of wirings 41 and the plurality of wirings 42 is provided on the substrate 30. Also, in FIG. 2(A), an example in which an IC 51 is mounted on the FPC 50 is shown. The input device 10 has a plurality of electrodes 31, a plurality of electrodes 32, a plurality of wirings 41, and a plurality of wirings 42 on the substrate 30. Also, an FPC 50 electrically connected to each of the plurality of wirings 41 and the plurality of wirings 42 is provided on the substrate 30. Also, in FIG. 2(A), an example in which an IC 51 is mounted on the FPC 50 is shown. . Here, for easy distinction, the contour of the electrode 32 is shown by a solid line, and the contour of the electrode 31 is shown by a broken line. line, respectively.

[0057] In FIG. 2(A), the electrode 31 is arranged so as to extend in the horizontal direction. Also, the electrode 32 is arranged so as to extend in a direction intersecting the electrode 31. As shown in FIG. 2(A), it is preferable that the electrode 31 and the electrode 32 are provided in perpendicular directions.

[0058] The plurality of wirings 41 are each electrically connected to one electrode 31. Also, the plurality of wirings 42 are each electrically connected to one electrode 32.

[0059] The IC 51 has a circuit for driving the input device 10. The IC 51 has a circuit for realizing a driving method such as, for example, a mutual capacitance method or a self - capacitance method.

[0060] FIG. 2(B) shows an enlarged view of the region P in FIG. 2(A). The electrode 31 and the electrode 32 partially overlap at the intersection portion 90 and intersect each other. At the intersection portion 90, an insulator is sandwiched between them so that the electrode 31 and the electrode 32 do not electrically short - circuit. .

[0061] In FIG. 2(B), a case is shown where the electrode 32 locally has a shape equivalent to that obtained by rotating the electrode 31 by 90 degrees is shown.

[0062] The contours of the electrode 31 and the electrode 32 in plan view have a shape in which a plurality of rhombus patterns are connected in the horizontal or vertical direction to form an integral body. At this time, as shown in FIG. 2(B), when one rhombus pattern is a square, the rhombus patterns arranged in the horizontal direction of the paper surface of the electrode 31 The pitch of the is preferably made equal to the pitch of the electrodes 32 arranged in the vertical direction of the paper surface. By doing so, in the detection area of the input device 10, the detection points can be arranged in a matrix in a grid pattern at equal intervals, and the detection accuracy can be improved.

[0063] The electrode 31 has a straight portion 21 in a part of its contour. Further, the electrode 32 has a straight portion 22 in a part of its contour. The electrode 31 and the electrode 32 are arranged such that the straight portion 21 and the straight portion 22 face each other in parallel. With such a configuration, the distance between the electrode 31 and the electrode 3 2 becomes constant, and the length of the two electrodes facing each other can be increased . Therefore, it is possible to increase the magnitude of the capacitance formed between the two electrodes . Further, in the portion where the two electrodes face each other, when a potential difference is applied between the two electrodes , the electric lines of force generated are uniformly distributed in density, so that the difference in detection sensitivity due to location can be suppressed . Therefore, a touch sensor with improved detection accuracy can be realized.

[0064] Note that, as shown in FIG. 3, the substrate 30 may be configured to have only one of the electrodes 31 or 32 arranged thereon. At this time, the other electrode may be provided on the display panel 70. For example, the common electrode of the liquid crystal element may be used as the electrode 31 or 32 . In FIG. 3, a configuration in which the electrode 31 is arranged on the substrate 30 is shown, but a configuration in which the electrode 32 is arranged on the substrate 30 may also be used.

[0065] FIG. 2(B) shows the direction 80 which is the extending direction of the scanning line 87 shown in FIG. 1(B). When the straight portion 21 and the straight portion 22 are parallel, the angle formed by the direction 80 and the straight portion 21 is... The angle formed by the corner, the direction 80, and the straight-line portion 22 is equal. Here, the angle formed by the direction 80 and the straight-line portion 21 or the straight-line portion 22 is denoted as the angle θ. The angle θ is 30 degrees or more and 60 degrees or less, preferably 40 degrees or more and 50 degrees or less, more preferably 42 degrees or more and 48 degrees or less, and typically preferably 45 degrees.

[0066] Also, let the distance between the electrode 31 and the electrode 32 be D. The smaller the distance D, the higher the capacitance between the two electrodes can be, and thus the detection sensitivity can be improved. Regarding the magnitude of the distance D, for example, it can be greater than 0 and 10 mm or less, preferably 1 μm or more and 5 mm or less, more preferably 3 μm or more and 1 mm or less, and even more preferably 5 μm or more and 500 μm or less, etc. Alternatively, it is preferably an integer multiple of the pitch when arranging the pixels or sub-pixels of the display unit 81, or the pitch when arranging the display elements 60.

[0067] In FIG. 2(B), an example is shown where the electrodes 31 and 32 each have a grid-like shape. The grid interval between the electrodes 31 and 32 is preferably set such that an integer multiple thereof is equal to the interval D between the electrodes 31 and 32. Also, as shown in FIG. 2(B), when the grids of the electrodes 3 1 and 32 are orthogonal grids, it is preferable that one of the two straight-line portions forming the grid is parallel to the straight-line portion 21 or the straight-line portion 22. In this case, the shape of the opening portions of the electrodes 31 and 32 is a square shape inclined by the angle θ with respect to the direction 80.

[0068] Note that in FIG. 2(B), the case where the shape of the grid opening is a square is shown, but it is not limited to this. It is also possible to make them into various shapes such as circular, elliptical, and rounded polygonal shapes without any problems.

[0069] It is preferable that the electrodes 31 and 32 are processed to be thin enough not to be visually recognized by the user. As shown in Fig. 2(B), by processing the electrodes 31 and 32 into a lattice shape (mesh shape), high conductivity and high visibility of the display device can be obtained. The width of the thinnest part of the electrodes 31 and 32 is preferably 30 nm or more and 100 μm or less, more preferably 50 nm or more and 50 μm or less, and even more preferably 50 nm or more and 20 μm or less. In particular, a conductive film having a pattern width of 10 μm or less is preferable because it is extremely difficult for the user to visually recognize it.

[0070] Also, conductive nanowires may be used for the electrodes 31 and 32. By dispersing them at an appropriate density so that adjacent nanowires are in contact with each other, a two-dimensional network is formed, and it can function as a highly light-transmissive conductive film. For example, nanowires having an average diameter value of 1 nm or more and 100 nm or less, preferably 5 nm or more and 50 nm or less, and more preferably 5 nm or more and 25 nm or less can be used. As the nanowires, metal nanowires such as Ag nanowires, Cu nanowires, and Al nanowires, or carbon nanotubes can be used. For example, in the case of Ag nanowires, a light transmittance of 89% or more and a sheet resistance value of 40 Ω / □ or more and 100 Ω / □ or less can be realized.

[0071] As shown in Fig. 4(A), the electrode 32 may be composed of a plurality of electrodes 33 and a bridge electrode 34. Here, the relative positions and shapes of the electrodes 33 and the bridge electrode 34 are made easier to see. ​​​​​​​​​​​​​Therefore, in FIG. 4(B), only the bridge electrode 34 is shown by a dashed line, and in FIG. 4(C), only the bridge electrode 34 is shown by a solid line. Also, the vertical relationship between the bridge electrode 34, the electrode 31, and the electrode 33 is not particularly limited, and either of them may be arranged on the substrate 30 side. The island-shaped electrodes 33 are arranged side by side in the vertical direction, and two adjacent electrodes 33 are electrically connected by the bridge electrode 34. With such a configuration, the electrodes 33 and the electrode 31 can be formed simultaneously by processing the same conductive film. Therefore, variations in film thickness, line width, etc. can be suppressed, and variations in the resistance values of the respective electrodes depending on the location can be suppressed. Also, with such a configuration, the electrodes 33 and the electrode 31 can be arranged on the same plane. Therefore, since there is no displacement in the height direction between the electrode 31 and the electrode 33, the distribution of the electric lines of force generated between them can be made uniform, and the detection sensitivity of the input device 10 can be improved. Here, the electrode 32 has the bridge electrode 34, but the electrode 31 may have such a configuration. At this time, when the influence of the contact resistance becomes significant by providing the bridge electrode 34, applying a configuration in which the shorter of the electrode 31 and the electrode 32 has the bridge electrode 34 is preferable because the number of bridge electrodes 34 of one electrode can be reduced.

[0072] In FIG. 5(A), an enlarged view of the region Q in FIG. 2(A) is shown. The region Q is a region including the corner of the detection region of the input device 10.

[0073]

[0074]

[0075] ​​​​​​​​​​​​​​As shown in FIG. 5(A), at the corner of the detection region, it is preferable that the electrodes 31 and 32 are shaped as if they are cut out in a direction parallel or perpendicular to the direction 80. Further, it is preferable that the contours of the electrodes 31 and electrodes 32 have a configuration having a straight line portion parallel or perpendicular to the direction 80. By adopting such a configuration, the bezel of the touch panel 100 formed by combining the input device 10 and the display panel 70 can be made narrower.

[0076] FIG. 5(B) shows an example in which the interval D is widened compared to FIG. 5(A). In this way, when widening the interval between the electrodes 31 and 32, it is preferable to apply a grid-like shape also to the intersection portion 90. FIG. 5(B) shows a case where the electrode 32 has a grid-like bridge electrode 34. As shown in FIG. 2(B), when the bridge electrode 34 is not applied, the electrodes 31 and electrodes 32 may have a grid-like shape at the intersection portion 90.

[0077] In the above, the case where the electrodes 31 and 32 have a grid-like shape has been shown, but it is not limited thereto, and it is sufficient that the electrodes 31 and 32 have a straight line portion facing each other, and they can take various other shapes.

[0078] Further, as shown in FIGS. 6(A) and 6(B), a dummy electrode 35 electrically insulated from the electrodes 31 and 32 may be arranged between the electrodes 31 and 32. By adopting such a configuration, it is possible to suppress the region where the electrodes 31 or 32 do not exist from being visually recognized.

[0079] In FIG. 7(A), inside the rhombic electrode pattern of the electrodes 31 and 33 shown in FIG. 4(A) ​​​​This shows the case where it is hollowed out to leave only the contour part. Also, in FIG. 7(B), it shows the case where only one straight line part of the grid is left as the electrodes 31 and 33. Also in FIG. 7(C), it shows the case where a zigzag pattern is provided inside the electrodes 31 and 33. At this time, the straight line part of the zigzag pattern is preferably formed so as to be parallel to the straight line part of the contour of the electrode 31 or the electrode 33. Also, as shown in FIG. 7(C), when the zigzag pattern is arranged along the extending direction of the electrode 31 or the electrode 32, it is preferable because the electrical resistance in this direction can be reduced.

[0080] In FIGS. 7(A), (B), and (C), an example of a configuration in which the electrode 32 has the bridge electrode 34 is shown, but as shown in FIG. 2(B), a configuration in which the bridge electrode 34 is not applied may also be used.

[0081] In FIG. 2(A) and the like, an example in which the upper surface shapes of the electrodes 31 and 32 are a shape in which a plurality of rhombuses are connected in one direction is shown, but the shapes of the electrodes 31 and 32 are not limited to this, and various upper surface shapes such as a strip shape (rectangular shape), a strip shape having a curve, and a zigzag shape can be adopted. Also, in the above, it is shown that the electrodes 31 and 32 are arranged so as to be orthogonal, but they do not necessarily have to be arranged orthogonally, and the angle formed by the two electrodes may be less than 9 0 degrees.

[0082] In FIG. 8(A), an example of the case where the electrodes 36 and 37 having a zigzag upper surface shape are used is shown. For clarity, in FIG. 8(A) and the like, the electrode 36 is shown by a broken line and the electrode 37 is shown by a solid line. At this time, as shown in FIG. 8(A), the center position of each straight line part It is preferable to displace the electrodes 36 and 37 relative to each other rather than overlapping them. The parallel facing portions of the electrodes 37 can be brought closer to each other, and the capacitance between the electrodes is increased, resulting in detection This is preferable because it improves the sensitivity. Alternatively, as shown in FIG. 8B, the electrodes 36 and 37 If the top surface shape of the zigzag shape is such that a part of the straight line portion protrudes, Even if the center positions of the electrodes are overlapped, the length of the opposing parts can be increased. The capacity between the two can be increased.

[0083] An enlarged view of the area enclosed by the dashed line in Fig. 8(A) is shown in Fig. 9(A), and the dashed line in Fig. 8(B) is shown in Fig. 9(B). An enlarged view of the enclosed area is shown in FIG. 9(D). Each figure also shows electrodes 36 and 37. , and the intersection 38 where they intersect. As shown in FIG. 9(A) and (D), the straight line portions of the electrodes 36 and 37 have corners. As shown in Fig. 9(C) and (F), the shape may be a meandering shape, or a continuous curved shape. The shape may be a meandering shape.

[0084] The above is a description of an example of the configuration of the input device.

[0085] [Pixel configuration example] The following describes the pixel configuration of the display panel 70 of the touch panel 100 according to one embodiment of the present invention. An example will be described.

[0086] As described above, the display section of the display panel 70 is provided with a plurality of pixels. The display panel 70 has one or more display elements 60. In this case, for example, a single pixel is provided with three display elements 60 of red (R), green (G), and blue (B). It is preferably configured in this way. Also, if one pixel has a display element 60 for yellow (Y) or white (W) in addition to the above three colors, it is preferable because power consumption can be reduced. Here, a configuration having one display element 60 and a pixel circuit corresponding thereto may be referred to as a sub pixel. When a pixel has three display elements 60, the pixel can be configured to include three sub-pixels.

[0087] Also, when the input device 10 is arranged so as to overlap the display panel 70, it is preferable that the electrodes 31 and 32 of the input device 10 are arranged so as to be positioned between the display elements 60. By doing so, the light from the display element 60 is not blocked by the electrodes 31 and 32, so that the decrease in the luminance of the display panel 70 when the input device 10 is provided can be substantially eliminated or made extremely small. Therefore, a touch panel with high visibility and reduced power consumption can be realized. Also, since the electrodes 31 and 32 do not overlap the display element 60, it is not necessary to use a translucent conductive material with relatively high resistance for the electrodes 31 and 32. Therefore, it is possible to use a low-resistance metal or alloy material for the electrodes 31 and 32, and the electrodes 3 1 and the electrode 32 can be formed extremely thin to the extent that they cannot be visually recognized by the naked eye. Therefore, it is also possible to suppress the electrodes 31 and 32 from being visually recognized by reflecting light or the like, so that a touch panel with higher visibility can be realized.

[0088] FIG. 10 shows an enlarged view of the display unit 81 when viewed from the display surface side of the touch panel 100 shown in FIG. 1(A) and the input device 10 in a superimposed state. Here, the display panel 70 has ​​​​​​The pixel 40 is shown in the case where it has four display elements 60 (display element 60R, display element 60G , display element 60B, display element 60Y) that exhibit different colors. Hereinafter When explaining matters common to the four types of display elements, etc., it will be described by referring to them as display element 60 .

[0089] FIG. 10 shows the positional relationship between the electrode 31 and each display element 60. Here, electrode 3 1 is shown, but the same applies to the case of electrode 32 (or electrode 33 and bridge electrode 34) . Also, in FIG. 10, in order to explain the direction of the scanning line 87 included in the display panel 70, etc., three scanning lines (scanning line 87a, scanning line 87b, and scanning line 87c) are shown by broken lines, and also the direction 80, which is the extending direction of the scanning line, is shown.

[0090] In the configuration shown in FIG. 10, the case where the angle formed by the straight portion of the grid of the electrode 31 and the scanning line 87 is 4 5 degrees is shown. The display elements 60 are arranged along the straight portion of the electrode 31 . Here, among the plurality of display elements 60 arranged obliquely in FIG. 10, two types of display elements 60 corresponding to different two colors are arranged alternately. One pixel 40 includes four adjacent display elements 60 (display element 60R, display element 60G, display element 60B, display element 60 Y). Here, the display element 60R is a display element that exhibits red, the display element 60G is a display element that exhibits green, the display element 60B is a display element that exhibits blue , and the display element 60Y is assumed to be a display element that exhibits yellow. .

[0091] It is preferable that one display element 60 has a portion whose contour is parallel to the straight portion of the grid of the electrode 31 . By adopting such a shape, when arranging the display elements 60 The gap between the two display elements 60 can be reduced, and the aperture ratio can be increased. In FIG. 10, the outline of the display element 60 is shown as a square with rounded corners, but it is not limited to this, and it may be a square, rectangle, polygon, ellipse, circle, or a polygon with rounded corners, etc. shape.

[0092] The scanning line 87a shown in FIG. 10 corresponds to, for example, the scanning line that drives the sub-pixel including the display element 60R. Also, the scanning line 87b corresponds to the scanning line that drives the sub-pixel including the display element 60G and the sub-pixel including the display element 60Y. Also, the scanning line 87c corresponds to the scanning line that drives the sub-pixel including the display element 60B. Each scanning line is electrically connected to the gate of the transistor included in each sub-pixel. That is, in the configuration illustrated in FIG. 10, one pixel can be driven by three scanning lines 87.

[0093] In FIG. 10, a configuration in which one pixel 40 (that is, four display elements 60) is included in one of the openings of the electrode 31 is shown, but it is not limited to this, and the electrode 31 can take various forms processed to be arranged between adjacent display elements 60.

[0094] FIG. 11(A) shows a case where one display element 60 is arranged in one of the openings of the grid of the electrode 31. Also, in FIG. 11(B), a case where the electrode 31 has a stripe shape is shown. Also, FIG. 11(C) shows an example in which a plurality of pixels 40 are arranged in one of the openings of the grid of the electrode 31. Also, FIG. 11(D) shows a case where the pitches of the grids in two orthogonal directions are different in the grid of the electrode 31. Also, FIGS. 11(E) and 11(F) show, as shown in FIG. 7(C), the electrode ​​​​​​​​​​​​​ 31 has a zigzag shape.

[0095] 10 and 11 show an example in which one pixel 40 is provided with a four-color display element 60. However, the present invention is not limited to this, and display elements of three colors, or five or more colors may be provided.

[0096] FIG. 12 shows an example in which one pixel 40 has display elements 60 of three colors. For ease of explanation, in FIG. 12, pixels 40a, 40b, and 40c are shown separately. The three display elements included in each of the pixels 40a, 40b, and 40c are shown separately. The child 60 has the same hatching pattern.

[0097] In FIG. 12, pixels 40a and 40b arranged in the vertical direction are The display elements 60 are arranged in the same order. The pixels 40a and 40c arranged in the horizontal direction are The arrangement of the display elements 60 is inverted upside down.

[0098] In FIG. 12, the display elements 60 of the same color are arranged in the vertical direction of the paper. By using this configuration, color filters and light emitting elements can be made according to the display elements 60 of different colors. This is preferable because it makes it easier to form when dividing.

[0099] FIG. 13A shows an example in which one pixel has a display element 60 of three colors. The display element 60 has a straight portion along the lattice direction of the electrodes 31, and a In this example, the display element 60 has a rounded rectangular shape. The electrodes are arranged in a stripe pattern along the direction of the lattice of 1. (C) and (D) show examples of the electrode 31 having a shape different from that in Fig. 13(A).

[0100] In addition, in Figs. 10 to 13, for the sake of easy explanation, some of the plurality of display elements 60 are labeled with symbols such as R, G, B, Y, etc. However, this arrangement method is just an example and does not limit the arrangement method of the display elements 60. R, G, B, and Y can be exchanged with each other. Also, instead of any of R, G, B, Y, W corresponding to a white display element may be arranged.

[0101] The above is the description of the pixel configuration example.

[0102] [Cross-sectional configuration example] Hereinafter, an example of the cross-sectional configuration of the touch panel 100 will be described with reference to the drawings.

[0103] [Cross-sectional configuration example 1] Fig. 14 is a schematic cross-sectional view of the touch panel 100. In Fig. 14, the regions including the FPC 73, the regions including the drive circuit 82, the regions including the display unit 81, and the regions including the FPC 5 0 are shown in cross-section respectively. The substrate 71 and the substrate 72 are bonded together by the adhesive layer 151. Also, the substrate 72

[0104] and the substrate 30 are bonded together by the adhesive layer 152. Here, the configuration including the substrate 71, the substrate 7 2 and the components sandwiched therebetween corresponds to the display panel 70. Also, the substrate 30 and the configuration including the components provided on the substrate 30 corresponds to the input device 10. 〈Display panel 70〉

[0105] Between the substrate 71 and the substrate 72, there are a transistor 201, a transistor 202, a transistor 202, and a transistor The display device 201 includes a display element 60, a capacitance element 205, a connection portion 206, and a wiring 207. There are.

[0106] On the substrate 71, an insulating layer 211, an insulating layer 212, an insulating layer 213, an insulating layer 214, and an insulating layer The insulating layer 211 is provided with a portion of each transistor. The other part functions as a dielectric of the capacitance element 205. The insulating layer 212, the insulating layer 213, and the insulating layer 214 are formed on the respective transistors and the capacitors. The insulating layer 214 is provided to cover the terminal 205 and the like. The insulating layer 214 functions as a planarizing layer. In this embodiment, the insulating layer 212, the insulating layer 213, and the insulating layer 214 are used as insulating layers for covering the transistors and the like. Although the present invention shows a case in which the edge layer 214 has three layers, the present invention is not limited to this and may have four or more layers. The insulating layer 214 that functions as a planarizing layer is not necessary. If so, it need not be provided.

[0107] A display element 60 is provided on the insulating layer 214. This shows an example of application of a surface emission type (top emission type) light emitting element (organic EL element). The display element 60 emits light toward the second electrode 223. A transistor 202, a transistor 203, a capacitor 205, wiring, and the like are arranged on the region. By providing such a display, the aperture ratio of the display unit 81 can be increased.

[0108] The display element 60 has an EL layer 222 between a first electrode 221 and a second electrode 223. In addition, an optical adjustment layer 224 is provided between the first electrode 221 and the EL layer 222. The insulating layer 215 is provided to cover the ends of the first electrode 221 and the optical adjustment layer 224. exists.

[0109] In FIG. 14, a cross-section of one pixel is shown as an example of the display unit 81. Here, it shows a case where the pixel has a transistor 202 for current control, a transistor 203 for switching control, and a capacitor element 205. One of the source or drain of the transistor 202 and one electrode of the capacitor element 205 are electrically connected to the first electrode 221 through openings provided in the insulating layer 212, the insulating layer 213, and the insulating layer 214. Also in FIG. 14, as an example of the drive circuit 82, a configuration in which a transistor 201 is provided is shown.

[0110]

[0111]

[0112]

[0112] In FIG. 14, an example is shown in which a semiconductor layer in which a channel is formed is sandwiched between two gate electrodes (conductive layer 241 and conductive layer 244) in the transistor 201 and the transistor 202. Such a transistor can increase the field-effect mobility compared to other transistors and can increase the on-current. As a result, a circuit capable of high-speed operation can be fabricated. Furthermore, it is possible to reduce the occupied area of the circuit. By applying a transistor with a large on-current, the display panel can be enlarged or the resolution can be increased. Even if the number of wirings increases when refined, it is possible to reduce the signal delay in each wiring, and it becomes possible to reduce the variation in the luminance of the display. The transistors provided in the drive circuit 82 and the display unit 81 may be transistors having the same structure, or may be used in combination with transistors having different structures.

[0113] It is preferable that at least one of the insulating layers 212 and 213 covering each transistor uses a material in which impurities such as water and hydrogen hardly diffuse. That is, the insulating layer 212 or the insulating layer 213 can function as a barrier film. By adopting such a configuration, it is possible to effectively suppress the diffusion of impurities from the outside into the transistors, and a highly reliable touch panel can be realized. The spacer 216 is provided on the insulating layer 215 and has a function of adjusting the distance between the substrate 71 and the substrate 72. In FIG. 14, a case where there is a gap between the spacer 216 and the light shielding layer 232 is shown, but these may be in contact with each other. Here, a configuration in which the spacer 216 is provided on the substrate 71 side is shown, but it may be provided on the substrate 72 side (for example, on the substrate 71 side of the light shielding layer 232). Alternatively, granular spacers may be used instead of the spacer 216. As the granular spacer, a material such as silica can be used, but it is preferable to use a material having elasticity such as an organic resin or rubber. At this time, the granular spacer may have a shape that is crushed in the vertical direction.

[0114] At least one of the insulating layers 212 and 213 covering each transistor preferably uses a material in which impurities such as water and hydrogen hardly diffuse. That is, the insulating layer 212 or the insulating layer 213 can function as a barrier film. By adopting such a configuration, it is possible to effectively suppress the diffusion of impurities from the outside into the transistors, and a highly reliable touch panel can be realized. That is, the insulating layer 212 or the insulating layer 213 can function as a barrier film. By adopting such a configuration, it is possible to effectively suppress the diffusion of impurities from the outside into the transistors, and a highly reliable touch panel can be realized. By adopting such a configuration, it is possible to effectively suppress the diffusion of impurities from the outside into the transistors, and a highly reliable touch panel can be realized. It becomes possible to effectively suppress the diffusion of impurities from the outside into the transistors, and a highly reliable touch panel can be realized. A highly reliable touch panel can be realized.

[0115] The spacer 216 is provided on the insulating layer 215 and has a function of adjusting the distance between the substrate 71 and the substrate 72. In FIG. 14, a case where there is a gap between the spacer 216 and the light shielding layer 232 is shown, but these may be in contact with each other. Here, a configuration in which the spacer 216 is provided on the substrate 71 side is shown, but it may be provided on the substrate 72 side (for example, on the substrate 71 side of the light shielding layer 232). Here, a configuration in which the spacer 216 is provided on the substrate 71 side is shown, but it may be provided on the substrate 72 side (for example, on the substrate 71 side of the light shielding layer 232). Alternatively, granular spacers may be used instead of the spacer 216. As the granular spacer, a material such as silica can be used, but it is preferable to use a material having elasticity such as an organic resin or rubber. At this time, the granular spacer may have a shape that is crushed in the vertical direction. At this time, the granular spacer may have a shape that is crushed in the vertical direction.

[0116] On the substrate 71 side of the substrate 72, a coloring layer 231, a light shielding layer 232, etc. are provided. 232 has an opening, and is arranged such that the opening overlaps with the display area of the display element 60. The coloring layer 231 is provided so as to overlap with the display element 60.

[0117] Examples of materials that can be used as the light-shielding layer 232 include carbon black, metal oxides, composite oxides containing solid solutions of multiple metal oxides, and the like. Also, for the light-shielding layer 232, a laminated film of a film containing the material of the coloring layer 231 can also be used. For example, a material containing acrylic resin is used for the coloring layer 231, and a laminated structure of a film containing the material used for the coloring layer that transmits light of a certain color and a film containing the material used for the coloring layer that transmits light of another color can be used. By making the materials of the coloring layer 231 and the light-shielding layer 232 common, not only can the device be made common, but the process can be simplified, which is preferable. For example, examples of materials that can be used for the coloring layer 231 include metal materials, resin materials, resin materials containing pigments or dyes.

[0118]

[0119] Also, an insulating layer that functions as an overcoat may be provided to cover the coloring layer 231 and the light-shielding layer 232.

[0120] A connection portion 206 is provided in a region close to the end of the substrate 71. The connection portion 206 is electrically connected to the FPC 73 via a connection layer 209. In the configuration shown in FIG. 14, an example is shown in which a connection portion 206 is configured by laminating a part of a wiring 207 that is electrically connected to the drive circuit 82 and a conductive layer formed by processing the same conductive film as the first electrode 221. In this way, by laminating two or more conductive layers to form the connection portion 206, not only can the electrical resistance be reduced, but also the mechanical strength of the connection portion 206 can be increased. ​​​​​​​​​

[0121] In FIG. 14, as an example, a wiring formed by processing a conductive film identical to the gate electrode of the transistor and a wiring formed by processing a conductive film identical to the source electrode and the drain electrode of the transistor intersect with each other, and a cross-sectional structure of the intersection 86 is shown. Here, a case is shown where a scanning line 87 formed by processing a conductive film identical to the gate electrode of the transistor is provided at the intersection 86. Note that the scanning line 87 may be a wiring formed by processing a conductive film identical to the source electrode and the drain electrode of the transistor, or another conductive film may be used. 〈Input device 10〉

[0122] On the substrate 72 side of the substrate 30, electrodes 31 and 32 are provided. Here, an example is shown in which the electrode 31 has an electrode 33 and a bridge electrode 34. As shown in the intersection 86 in FIG. 14, the electrode 32 and the electrode 33 are formed on the same plane. Further, a bridge electrode 34 is provided on an insulating layer 161 covering the electrode 32 and the electrode 33. The bridge electrode 34 is electrically connected to two electrode 33s provided so as to sandwich the electrode 32 through an opening provided in the insulating layer 161. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232.

[0123] 〈Input device 10〉 On the substrate 72 side of the substrate 30, electrodes 31 and 32 are provided. Here, an example is shown in which the electrode 31 has an electrode 33 and a bridge electrode 34. As shown in the intersection 86 in FIG. 14, the electrode 32 and the electrode 33 are formed on the same plane. Further, a bridge electrode 34 is provided on an insulating layer 161 covering the electrode 32 and the electrode 33. The bridge electrode 34 is electrically connected to two electrode 33s provided so as to sandwich the electrode 32 through an opening provided in the insulating layer 161. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232.

[0124] In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. In the configuration shown in FIG. 14, an example is shown in which the electrode 33 is arranged so as not to overlap the display element 60. That is, the electrode 33 is arranged so that the opening of the electrode 33 and the display element 60 overlap. At this time, it is preferable that the electrode 33 is arranged so as not to overlap the coloring layer 231. Further, the electrode 33 is arranged so as to overlap the light shielding layer 232. This is preferable. Here, an example of the electrode 33 is shown, but the electrodes 31, 32, and the bridge electrode 34 are also preferably arranged so as not to overlap with the display element 60 or the like.

[0125] A connection portion 106 is provided in a region near the end of the substrate 30. The connection portion 106 is electrically connected to the FPC 50 via the connection layer 109. In the configuration shown in FIG. 14, an example is shown in which the connection portion 106 is formed by laminating a part of the wiring 42 and a conductive layer obtained by processing the same conductive film as the bridge electrode 34.

[0126] As the connection layer 109 or the connection layer 209, an anisotropic conductive film (ACF: Anisotropic Conductive Film) or an anisotropic conductive paste (ACP: Anisotropic Conductive Paste) can be used.

[0127] Here, the substrate 30 can also be used as a substrate that a detection object such as a finger or a stylus touches directly. In that case, it is preferable to provide a protective layer (such as a ceramic coat) on the substrate 30. The protective layer can use an inorganic insulating material such as silicon oxide, aluminum oxide, yttrium oxide, yttria-stabilized zirconia (YSZ). Further, strengthened glass can be used for the substrate 30. The strengthened glass is subjected to physical or chemical treatment such as an ion exchange method or an air-cooled strengthening method, and a compressive stress is applied to its surface. A touch sensor can be provided on one surface of the strengthened glass, and the opposite surface can be provided on the outermost surface of an electronic device, for example, and used as a touch surface, so that the thickness of the entire device can be reduced.

[0128] <Regarding Each Component> Hereinafter, each component shown above will be described.

[0129] For the substrate of the touch panel, a material having a flat surface can be used. For the display element For the substrate on the side that extracts light from, a material that transmits the light is used. For example, glass, quartz , ceramics, sapphire, organic resin, or the like can be used.

[0130] By using a thin substrate, the touch panel can be made lighter and thinner. Furthermore, by using a substrate having a thickness that allows for flexibility, a flexible touch panel can be realized.

[0131] As the glass, for example, non-alkali glass, barium borosilicate glass, aluminoboro silicate glass, or the like can be used.

[0132] As materials having flexibility and transparency to visible light, for example, glass having a thickness that allows for flexibility , polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and other polyester resins, polyacrylonitrile resin, polyimide resin, polymeth acrylate resin, polycarbonate (PC) resin, polyethersulfone (PE S) resin, polyamide resin, cycloolefin resin, polystyrene resin, polyamide imi d resin, polyvinyl chloride resin, polytetrafluoroethylene (PTFE) resin, and the like can be mentioned. In particular, it is preferable to use a material having a low coefficient of thermal expansion. For example, polyamide imide resin, polyimide resin, PET, or the like can be suitably used. Also, a substrate impregnated with an organic resin in glass fiber or a substrate in which an inorganic filler is mixed with an organic resin to lower the coefficient of thermal expansion can be used It can also be done. Since the substrate using such a material is light in weight, the touch panel using the substrate can also be made lightweight.

[0133] In addition, since the substrate on the side where light emission is not extracted does not necessarily need to have translucency, in addition to the substrates mentioned above, a metal substrate, a ceramic substrate, a semiconductor substrate, etc. can also be used. A metal substrate has high thermal conductivity and can easily conduct heat throughout the metal substrate, so it can suppress local temperature rise of the touch panel, which is preferable. To obtain flexibility and bendability, the thickness of the metal substrate is preferably 10 μm or more and 200 μm or less, and more preferably 20 μm or more and 50 μm or less.

[0134] The material constituting the metal substrate is not particularly limited, but for example, metals such as aluminum, copper, and nickel, or alloys such as aluminum alloys or stainless steel can be preferably used.

[0135] In addition, a substrate subjected to insulation treatment by oxidizing the surface of the metal substrate or forming an insulating film on the surface may be used. For example, an insulating film may be formed using a coating method such as a spin coating method or a dip method, an electroplating method, a vapor deposition method, or a sputtering method. Alternatively, an oxide film may be formed on the surface of the substrate by leaving it in an oxygen atmosphere or heating it, or by an anodizing method, etc.

[0136] A hard coat layer (for example, a silicon nitride layer, etc.) for protecting the surface of the touch panel from scratches and a layer made of a material capable of dispersing pressure (for example, an aramid resin layer, etc.) may be laminated on the flexible substrate. In addition, to suppress a decrease in the life of the display element due to moisture, etc. Therefore, even if a low water-permeable insulating film is formed on a flexible substrate. For example, a film containing nitrogen and silicon such as a silicon nitride film or a silicon oxynitride film, or an insulating film with low water permeability such as a aluminum nitride film containing nitrogen and aluminum may be used. The substrate may have a film containing nitrogen and silicon such as a silicon nitride film or a silicon oxynitride film, or an insulating film with low water permeability such as a aluminum nitride film containing nitrogen and aluminum.

[0137] The substrate can also be used by laminating a plurality of layers. In particular, by adopting a configuration having a glass layer, the barrier properties against water and oxygen can be improved, and a highly reliable touch panel can be obtained.

[0138] For example, a substrate obtained by laminating a glass layer, an adhesive layer, and an organic resin layer from the side closer to the display element can be used. The thickness of the glass layer is 20 μm or more and 200 μm or less, preferably 25 μm or more and 100 μm or less. A glass layer with such a thickness can simultaneously achieve high barrier properties against water and oxygen and flexibility. Also, the thickness of the organic resin layer is 10 μm or more and 200 μm or less, preferably 20 μm or more and 50 μm or less. By providing such an organic resin layer outside the glass layer, cracks and fractures in the glass layer can be suppressed, and the mechanical strength can be improved. By applying such a composite material of glass material and organic resin to the substrate, a highly reliable flexible touch panel can be obtained.

[0139] The transistor has a conductive layer functioning as a gate electrode, a semiconductor layer, a conductive layer functioning as a source electrode, a conductive layer functioning as a drain electrode, and an insulating layer functioning as a gate insulating layer.

[0140] Note that the structure of the transistor included in the touch panel according to one aspect of the present invention is not particularly limited. ​​​​​​​​​​​​​For example, it may be a staggered transistor or an inverse staggered transistor. It may also be any of a top gate type or a bottom gate type transistor structure. The semiconductor material used for the transistor is not particularly limited, and examples thereof include oxide semiconductors, silicon, germanium, and organic semiconductors.

[0141] The crystallinity of the semiconductor material used for the transistor is also not particularly limited, and any of amorphous semiconductors, semiconductors having crystallinity (microcrystalline semiconductors, polycrystalline semiconductors, single crystal semiconductors, or semiconductors having a partially crystalline region) may be used. Using a semiconductor having crystallinity is preferable because deterioration of transistor characteristics can be suppressed.

[0142] Also, as the semiconductor material used for the transistor, for example, group 14 elements, compound semiconductors, or oxide semiconductors can be used for the semiconductor layer. Typically, semiconductors containing silicon, semiconductors containing gallium arsenide, or oxide semiconductors containing indium can be applied.

[0143] In particular, it is preferable to apply an oxide semiconductor to the semiconductor in which the channel of the transistor is formed. In particular, it is preferable to apply an oxide semiconductor having a larger bandgap than silicon. Using a semiconductor material having a wider bandgap and a lower carrier density than silicon is preferable because the current in the off state of the transistor can be reduced.

[0144] 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 an In-M-Zn based oxide (M is a metal such as Al, Ti, Ga, Ge, Y, Zr, Sn, La, Ce, or Hf). Well.

[0145] In particular, as the semiconductor layer, it has a plurality of crystal parts, and the c-axis of the crystal part is perpendicular to the surface to be formed of the semiconductor layer or is oriented substantially perpendicular to the upper surface of the semiconductor layer, and no grain boundary is observed between adjacent crystal parts It is preferable to use an oxide semiconductor film.

[0146] 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, it has flexibility and can be suitably used for a touch panel or the like that is curved and used. Moreover, by using such an oxide semiconductor having crystallinity as the semiconductor layer, fluctuations in electrical characteristics are suppressed, and a highly reliable transistor can be realized.

[0147] In addition, a transistor using an oxide semiconductor having a larger bandgap than silicon can hold the charge accumulated in the capacitor connected in series with the transistor for a long time

[0148] due to its low off-current. By applying such a transistor to a pixel, it is also 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. Alternatively, it is preferable to use silicon for the semiconductor in which the channel of the transistor is formed. Although amorphous silicon may be used as silicon, it is particularly preferable to use crystalline silicon.

[0149] For example, microcrystalline silicon, polycrystalline silicon, single crystal silicon ​​It is preferable to use etc. In particular, polycrystalline silicon can be formed at a lower temperature compared to single-crystalline silicon, and has a higher field-effect mobility and higher reliability compared to amorphous silicon. By applying such a polycrystalline semiconductor to a pixel, the aperture ratio of the pixel can be improved. Also, even when the pixel has extremely high definition, it becomes possible to form the scanning line drive circuit and the signal line drive circuit on the same substrate as the pixel, and the number of components constituting the electronic device can be reduced. It can be formed at a low temperature and has a high field-effect mobility and high reliability compared to amorphous silicon. By applying such a polycrystalline semiconductor to a pixel, the aperture ratio of the pixel can be improved. Also, even when the pixel has extremely high definition, it becomes possible to form the scanning line drive circuit and the signal line drive circuit on the same substrate as the pixel, and the number of components constituting the electronic device can be reduced. It can be formed on the same substrate as the pixel, and the number of components constituting the electronic device can be reduced. It can be achieved.

[0150] In addition to the gate, source, and drain of the transistor, materials that can be used for conductive layers such as various wiring lines and electrodes constituting the touch panel include metals such as aluminum, titanium, chromium, nickel, copper, yttrium, zirconium, molybdenum, silver, tantalum, and also tungsten, or alloys having these as main components. Also, films containing these materials can be used as a single layer or in a laminated structure. For example, a single-layer structure of an aluminum film containing silicon, a two-layer structure in which an aluminum film is laminated on a titanium film, a two-layer structure in which an aluminum film is laminated on a tungsten film, a two-layer structure in which a copper film is laminated on a copper-magnesium-aluminum alloy film, a two-layer structure in which a copper film is laminated on a titanium film, a two-layer structure in which a copper film is laminated on a tungsten film, a three-layer structure in which a titanium film or a titanium nitride film is overlapped with an aluminum film or a copper film thereon, and a titanium film or a titanium nitride film is further formed thereon, a three-layer structure in which a molybdenum film or a molybdenum nitride film is overlapped with an aluminum film or a copper film thereon, and a molybdenum film or a molybdenum nitride film is further formed thereon, etc. In addition, a transparent conductive material containing indium oxide, tin oxide, or zinc oxide is used. For example, a single-layer structure of an aluminum film containing silicon, a two-layer structure in which an aluminum film is laminated on a titanium film, a two-layer structure in which an aluminum film is laminated on a tungsten film, a two-layer structure in which a copper film is laminated on a copper-magnesium-aluminum alloy film, a two-layer structure in which a copper film is laminated on a titanium film, a two-layer structure in which a copper film is laminated on a tungsten film, a three-layer structure in which a titanium film or a titanium nitride film is overlapped with an aluminum film or a copper film thereon, and a titanium film or a titanium nitride film is further formed thereon, a three-layer structure in which a molybdenum film or a molybdenum nitride film is overlapped with an aluminum film or a copper film thereon, and a molybdenum film or a molybdenum nitride film is further formed thereon, etc. In addition, a transparent conductive material containing indium oxide, tin oxide, or zinc oxide is used. a three-layer structure in which a titanium film or a titanium nitride film is overlapped with an aluminum film or a copper film thereon, and a titanium film or a titanium nitride film is further formed thereon, a three-layer structure in which a molybdenum film or a molybdenum nitride film is overlapped with an aluminum film or a copper film thereon, and a molybdenum film or a molybdenum nitride film is further formed thereon, etc. In addition, a transparent conductive material containing indium oxide, tin oxide, or zinc oxide is used. a three-layer structure in which a molybdenum film or a molybdenum nitride film is overlapped with an aluminum film or a copper film thereon, and a molybdenum film or a molybdenum nitride film is further formed thereon, a three-layer structure in which a molybdenum film or a molybdenum nitride film is overlapped with an aluminum film or a copper film thereon, and a molybdenum film or a molybdenum nitride film is further formed thereon, etc. In addition, a transparent conductive material containing indium oxide, tin oxide, or zinc oxide is used. a three-layer structure in which a molybdenum film or a molybdenum nitride film is overlapped with an aluminum film or a copper film thereon, and a molybdenum film or a molybdenum nitride film is further formed thereon, etc. In addition, a transparent conductive material containing indium oxide, tin oxide, or zinc oxide is used. This is also acceptable. Additionally, when using copper containing manganese, the controllability of the shape by etching is enhanced which is preferable.

[0151] Moreover, it can be used for conductive layers such as various wirings and electrodes constituting the touch panel Examples of the light-transmissive material include conductive oxides such as indium oxide, indium tin oxide, indium zinc oxide , zinc oxide, zinc oxide added with gallium, or graphene. Alternatively, metal materials such as gold, silver, platinum, magnesium, nickel, tungsten, chromium , molybdenum, iron, cobalt, copper, palladium, or titanium, or alloy materials containing such metal materials can be used. Alternatively, nitrides of such metal materials (for example , titanium nitride) can also be used. Note that when using metal materials, alloy materials (or their nitrides) , they may be made thin enough to have light-transmittance. Also, a laminated film of the above materials can be used as the conductive layer . For example, using a laminated film of an alloy of silver and magnesium and indium tin oxide is preferable because the conductivity can be enhanced.

[0152] Examples of the insulating materials that can be used for each insulating layer, overcoat, spacer, etc. include resins such as acrylic and epoxy , resins having a siloxane bond, and in addition, inorganic insulating materials such as silicon oxide , silicon oxynitride, silicon nitride oxide, silicon nitride, and aluminum oxide can also be used.

[0153] Moreover, it is preferable that the light-emitting element is provided between a pair of insulating films with low water permeability. This can suppress the intrusion of impurities such as water into the light-emitting element and suppress the deterioration of the reliability of the device .

[0154] Examples of the low-permeability insulating film include films containing nitrogen and silicon such as silicon nitride films and silicon oxynitride films, and films containing nitrogen and aluminum such as aluminum nitride films. Further, silicon oxide films, silicon oxynitride films, aluminum oxide films, etc. may be used.

[0155] For example, the water vapor transmission rate of the low-permeability insulating film is 1 × 10 -5 [g / (m 2 ·day) or less, preferably 1 × 10 -6 [g / (m 2 ·day)] or less, more preferably 1 × 1 0 -7 [g / (m 2 ·day)] or less, still more preferably 1 × 10 -8 [g / (m 2 ·d ay)] or less.

[0156] As each adhesive layer, various curable adhesives such as photocurable adhesives such as ultraviolet curable types, reaction curable adhesives, thermosetting adhesives, and anaerobic adhesives can be used. Examples of these adhesives include epoxy resins, acrylic resins, silicone resins, phenolic resins, polyimide resins, imide resins, PVC (polyvinyl chloride) resins, PVB (polyvinyl butyral) resins, EVA (ethylene vinyl acetate) resins, etc. In particular, materials with low moisture permeability such as epoxy resins are preferred. Further, two-component mixed resins may be used. Further, adhesive sheets, etc. may be used. may be used.

[0157] Further, the above resin may contain a desiccant. For example, substances that adsorb moisture by chemical adsorption such as oxides of alkaline earth metals (calcium oxide, barium oxide, etc.) can be used. Alternatively, substances that adsorb moisture by physical adsorption such as zeolite and silica gel can be used. ​ A substance for adsorption may be used. If a desiccant is included, impurities such as moisture can be prevented from invading the functional element, which is preferable because it improves the reliability of the display panel.

[0158] Also, by mixing a filler or a light-scattering member having a high refractive index into the above resin, the light extraction efficiency from the light-emitting element can be improved. For example, titanium oxide, barium oxide, zeolite, zirconium, etc. can be used.

[0159] As the light-emitting element, an element capable of self-emission can be used, and an element whose brightness is controlled by current or voltage is included in that category. For example, a light-emitting diode (LED), an organic EL element, an inorganic EL element, etc. can be used.

[0160] The light-emitting element may be any of a top emission type, a bottom emission type, and a dual emission type. For the electrode on the side where light is extracted, a conductive film that transmits visible light is used. Also, for the electrode on the side where light is not extracted, it is preferable to use a conductive film that reflects visible light.

[0161] The EL layer has at least a light-emitting layer. As layers other than the light-emitting layer, the EL layer may further have a layer containing a substance with high hole injection property, a substance with high hole transport property, a hole blocking material, a substance with high electron transport property, a substance with high electron injection property, or a bipolar substance (a substance with high electron transport property and high hole transport property).

[0162] Either a low molecular weight compound or a high molecular weight compound can be used for the EL layer, and it may contain an inorganic compound. The layers constituting the EL layer are each formed by a vapor deposition method (including vacuum vapor deposition method). It can be formed by methods such as a transfer method, a printing method, an inkjet method, a coating method, etc.

[0163] When a voltage higher than the threshold voltage of the light-emitting element is applied between the cathode and the anode, holes are injected from the anode side into the EL layer, and electrons are injected from the cathode side. The injected electrons and holes recombine in the EL layer, and the light-emitting substance contained in the EL layer emits light.

[0164] When a light-emitting element that emits white light is applied as the light-emitting element, it is preferable to adopt a configuration in which the EL layer contains two or more light-emitting substances. For example, white light can be obtained by selecting light-emitting substances such that the light emissions of each of the two or more light-emitting substances are complementary colors. For example, light-emitting substances that respectively exhibit light emissions such as R (red), G (green), B (blue), Y (yellow), O (orange), etc., or among light-emitting substances that exhibit light emissions including spectral components of two or more colors among R, G, and B, it is preferable to include two or more. Also, it is preferable to apply a light-emitting element whose emission spectrum from the light-emitting element has two or more peaks within the wavelength range of the visible light region (for example, 350 nm to 750 nm). Further, the emission spectrum of a material having a peak in the yellow wavelength region is preferably a material that also has spectral components in the green and red wavelength regions.

[0165] The EL layer preferably has a structure in which a light-emitting layer containing a light-emitting material that emits one color and a light-emitting layer containing a light-emitting material that emits another color are laminated. For example, the plurality of light-emitting layers in the EL layer may be laminated in contact with each other, or may be laminated via a separation layer. For example, a configuration in which a separation layer is provided between a fluorescent light-emitting layer and a phosphorescent light-emitting layer may be adopted. For example, between a fluorescent light-emitting layer and a phosphorescent light-emitting layer, a material (for example, a host) identical to the fluorescent light-emitting layer or the phosphorescent light-emitting layer ​​​​​​ A structure in which a region containing a light-emitting material (a resist material, an assist material) and a region containing no light-emitting material is provided. This makes it easier to fabricate the light-emitting element and reduces the driving voltage.

[0166] The conductive film that transmits visible light is, for example, indium oxide or indium tin oxide (ITO). Indium Tin Oxide, Indium Zinc Oxide, Zinc Oxide, Gallium-doped It can be formed using zinc oxide with added metals. It can also be formed using gold, silver, platinum, magnesium , nickel, tungsten, chromium, molybdenum, iron, cobalt, copper, palladium, if Metallic materials such as titanium, alloys containing these metallic materials, or nitrides of these metallic materials (e.g. For example, titanium nitride can be used by forming it thin enough to have light transmission properties. A laminated film of the above materials can also be used as the conductive layer. For example, a layer of silver and magnesium It is preferable to use a laminated film of an alloy of tungsten and ITO, since the electrical conductivity can be increased. Graphene or the like may also be used.

[0167] The conductive film that reflects visible light is made of, for example, aluminum, gold, platinum, silver, nickel, tungsten, etc. Metallic materials such as stainless steel, chromium, molybdenum, iron, cobalt, copper, or palladium, or In addition, the above-mentioned metal materials and alloys may be used. Tungsten, neodymium, germanium, etc. may be added. Aluminum alloys such as tungsten alloys, aluminum-nickel alloys, and aluminum-neodymium alloys Alloys containing palladium (aluminum alloys), silver and copper alloys, silver, palladium and copper alloys, It can be formed using an alloy containing silver, such as an alloy of silver and magnesium. The alloy is preferable because of its high heat resistance. Further, by laminating a metal film or a metal oxide film in contact with the aluminum alloy film, oxidation of the aluminum alloy film can be suppressed. Examples of the material for the metal film and the metal oxide film include titanium, titanium oxide, etc. Also, a film composed of a conductive film that transmits visible light and a metal material may be laminated. For example, a laminated film of silver and ITO, a laminated film of silver and an alloy of magnesium and ITO, etc. can be used. The conductive films may each be formed using a vapor deposition method or a sputtering method. In addition, they can be formed using a discharge method such as an inkjet method, a printing method such as a screen printing method, or a plating method. Also, the light-emitting element may be a single element having one EL layer, or may be a tandem element in which a plurality of EL layers are laminated via a charge generation layer. The above is the description of each component.

[0168] Below, an example with a different partial configuration from the above cross-sectional configuration example 1 will be described with reference to the drawings. In the following, the description of the overlapping parts with the above will be omitted, and the differences will be described. 〔Cross-sectional configuration example 2〕 Fig. 15 shows a cross-sectional configuration example of a touch panel 100 with a different partial configuration from Fig. 14.

[0169] In Fig. 15, for the transistors 201 and 202, a conductive layer that functions as their second gate is provided between the insulating layer 213 and the insulating layer 214. Thus,

[0170]

[0171]

[0172]

[0173] By adopting this configuration, the voltage applied to the second gate can be reduced compared to the configuration shown in FIG. Therefore, it is preferable.

[0174] Moreover, the display element 60 shown in FIG. 15 is an example formed by a color-coded method. Specifically, the EL layer 222 that emits light of a different color is formed for each pixel of a different color. Further, outside the light emitting region of the display element 60, the end portion of the EL layer 222 is covered with the second electrode 223. The EL layer 222 is formed by, for example, deposition using a metal mask or printing. The ink jet method or the like can be used to form the ink jet recording layer.

[0175] In addition, in FIG. 15, the optical adjustment layer 224 and the colored layer 231 illustrated in FIG. 14 are not provided. This provides a good example.

[0176] FIG. 15 shows an example in which a protective film 217 is provided to cover the second electrode 223. The protective film 217 is a barrier film to prevent impurities such as water from diffusing into the display element 60. Although not shown here, the protective film 217 is provided at the end of the EL layer 222. Alternatively, if the second electrode 223 is provided so as to cover the end of the second electrode 223, moisture can be more effectively prevented from entering the display element 60. It is possible to suppress the invasion of

[0177] The protective film 217 may be made of an organic insulating material or an inorganic insulating material. The use of inorganic insulating materials is preferable because it allows the formation of a thin film with high barrier properties. When inorganic insulating materials are used for 217, for example, silicon nitride, silicon oxide nitride, and alumina oxide are used. Aluminum, aluminum oxide nitride, aluminum oxide nitride, aluminum nitride, halide It is preferable to use aluminum oxide, etc. In particular, aluminum oxide has excellent barrier properties. Therefore, it is preferable. As a method for forming the protective film 217, a sputtering method, a vapor deposition method, C VD (Chemical Vapor Deposition) method, ALD (Atomi c Layer Deposition) method, etc. can be used. In particular, using the ALD method is preferable because damage to the display element 60 during film formation can be suppressed. Also, A Although the thermal ALD method can also be used as the LD method, using the PEALD (Plasma Enh anced ALD) method is more preferable because film formation can be performed at a low temperature of about room temperature.

[0178] Note that the configurations of the transistor, the display element 60, the protective film 217, etc. exemplified here can be replaced with the configurations of the transistor, the display element, etc. in each cross-sectional configuration exemplified in FIG. 14 and below.

[0179] 〔Example of cross-sectional configuration 3〕 The touch panel shown in FIG. 16 has a substrate 111 and a substrate 112. The substrate 111 and the substrate 7 2 are adhered by an adhesive layer 152, and the substrate 111 and the substrate 112 are adhered by an adhesive layer 153.

[0180] The electrodes 32, wirings 42, etc. are formed on the substrate 111. Also, the electrodes 31, wirings 41 (not shown in the figure), etc. are formed on the substrate 112. In FIG. 16, an FPC 50 is provided on the substrate 111, but in a region not shown, an FPC is similarly connected to the substrate 112.

[0181] Thus, when using two substrates as the configuration of the input device 10, it is preferable to use substrates 111 and 112 that are equivalent to or thinner than the substrates 71 and 72. ​​​​​​In particular, it is preferable to use the above-mentioned flexible material for the substrate 111 and the substrate 112. This makes it possible to reduce the thickness of the touch panel 100.

[0182] As shown in FIG. 16, a protective substrate 130 is provided on the substrate 112 via an adhesive layer 154. The surface of the protection substrate 130 opposite to the substrate 112 functions as a touch surface. The material of the protective substrate 130 can be the same as that of the substrate 30 described above.

[0183] [Cross-sectional configuration example 4] The touch panel shown in Fig. 17 has a substrate 113. The substrate 113 and the substrate 72 are bonded to each other by an adhesive layer. It is attached by 152.

[0184] An electrode 32, a wiring 42, etc. are provided on one surface of the substrate 113. On the other surface, electrodes 31, wiring 41, etc. are provided. The electrodes and wiring constituting the light-emitting element are provided on the front and back surfaces of the substrate 113.

[0185] In addition, in FIG. 17, in the connection portion 106a where a part of the wiring 42 is exposed, In addition, in the connection portion 106b where the connection layer 109a is provided and a part of the wiring 41 is exposed, F In this example, a PC 50b and a connection layer 109b are provided. The connecting portion 106b may overlap each other in a plan view, or may be arranged so as not to overlap each other. The electrodes may be arranged in a shifted manner.

[0186] [Cross-sectional configuration example 5] The touch panel shown in FIG. 18 has a touch sensor on the surface of the substrate 72 opposite to the substrate 71. Specifically, a bridge electrode 34 and a bridge An insulating layer 161 covering a part of the ridge electrode 34, and electrodes 31, 32, wirings 41 (not shown), wiring 42, etc. are provided on the insulating layer 161.

[0187] Also, as shown in FIG. 18, the protective substrate 130 and the substrate 72 may be bonded with an adhesive layer 152. Okay.

[0188] With such a configuration, the input device 10 and the display panel 70 can share the substrate, so that the thickness of the touch panel can be made extremely thin.

[0189] 〔Cross-sectional configuration example 6〕 FIG. 19 shows an example of a combination of the configuration of the touch sensor illustrated in FIG. 18 and the configuration of a touch panel using a light-emitting element to which the painting method illustrated in FIG. 15 is applied as the display element 60. Further, FIG. 19 shows an example in the case where the light-shielding layer 232 is not provided. A combination example is shown. Also, FIG. 19 shows an example in the case where the light-shielding layer 232 is not provided. is shown. Okay.

[0190] 〔Cross-sectional configuration example 7〕 In the touch panel shown in FIG. 20, electrodes and the like constituting the touch sensor are provided on the surface of the substrate 72 on the side of the substrate 71. Specifically, electrodes 32, 33, wiring 41 (not shown), wiring 42, etc. are provided on the substrate 72, an insulating layer 161 covering these, and a bridge electrode 34 etc. are provided on the insulating layer 161. Okay.

[0191] Also, an insulating layer 233 is provided covering the electrodes and the like constituting the touch sensor. Further, a coloring layer 231, a light-shielding layer 232, etc. are provided on the insulating layer 233. Okay.

[0192] With such a configuration, the input device 10 and the display panel 70 can share the substrate, and since one surface of the substrate 72 can be used as the touch surface, the thickness of the touch panel 100 It can be further thinned.

[0193] 〔Cross-sectional configuration example 8〕 Fig. 21 shows a modified example of the touch panel shown in Fig. 20.

[0194] The touch panel shown in Fig. 21 has a laminated structure of a substrate 91, an adhesive layer 92, a substrate 93, and an insulating layer 94 instead of the substrate 71. Also, instead of the substrate 72, it has a laminated structure of a substrate 191, an adhesive layer 19 2, a substrate 193, and an insulating layer 194.

[0195] The insulating layer 94 and the insulating layer 194 can be made of a material in which impurities such as water and hydrogen do not easily diffuse. By adopting such a configuration, even if materials having moisture permeability are used for the substrate 91, the substrate 93, the substrate 191, and the substrate 193, it is possible to effectively suppress the diffusion of impurities from the outside to the display element 60 and each transistor, and a highly reliable touch panel can be realized.

[0196] The substrate 93 and the substrate 193 can be made of a material such as a flexible resin. The substrate 91 and the substrate 191 are preferably made of a flexible film or the like. By using a flexible material for these substrates, a touch panel that can be bent can be realized.

[0197] 〔Cross-sectional configuration example 9〕 The touch panel shown in Fig. 22 has a light-shielding layer 232 provided between the electrodes and the like constituting the touch sensor and the substrate 72. Specifically, a light-shielding layer 232 is provided on the substrate 72, and an insulating layer 234 is provided so as to cover the light-shielding layer 232. On the insulating layer 234, electrodes 32, electrodes ​​33, wiring 41 (not shown), wiring 42, an insulating layer 161 covering these, and an insulating layer 16 The bridge electrode 34 and the insulating layer 161 are provided on the insulating layer 161. An insulating layer 233 is provided on the upper side, and a colored layer 231 is provided on the insulating layer 233 .

[0198] The insulating layer 233 and the insulating layer 234 function as a planarization film. 3. The insulating layer 234 may not be provided if it is not necessary.

[0199] With this configuration, the electrode constituting the touch sensor is provided on the visible side. The light-shielding layer 232 can prevent the electrodes and the like from reflecting external light, making the electrodes and the like invisible. Therefore, not only is the thickness thin, but the visibility is also improved. Further improved touch panels can be realized.

[0200] [Cross-sectional configuration example 10] FIG. 23 shows a modification of the touch panel shown in FIG.

[0201] The touch panel shown in FIG. 23 includes a substrate 91 instead of the substrate 71, an adhesive layer 92, and an insulating layer 9 4. Also, instead of the substrate 72, a substrate 191, an adhesive layer 192, and an insulating layer It has a laminated structure of layers 194.

[0202] By using a flexible material for the substrate 91 and the substrate 191, the substrate can be bent. This makes it possible to realize a touch panel that can be used with the touch panel.

[0203] [Cross-sectional configuration example 11] FIG. 24 shows a cross-sectional structure of a touch panel when a liquid crystal display device is used as the display panel 70. The touch panel shown in FIG. 24 uses a liquid crystal element as the display element 208. exists. The touch panel also has a polarizing plate 131, a polarizing plate 132, and a backlight 133. has.

[0204] Here, as the display element 208, an example is shown in which a liquid crystal element to which the FFS (Fringe Field Switching) mode is applied is used. The display element 208 has an electrode 251, an electrode 252, and a liquid crystal 253. The electrode 251 is provided on the electrode 252 with an insulating layer 254 interposed therebetween, and has a comb-like shape or a shape provided with slits. .

[0205] An overcoat 255 is provided covering the coloring layer 231 and the light-shielding layer 232. The overcoat 255 has a function of suppressing the diffusion of pigments contained in the coloring layer 231 and the light-shielding layer 232 into the liquid crystal 25 3.

[0206] Also, in the overcoat 255, the insulating layer 254, the electrode 251, etc., an alignment film for controlling the alignment of the liquid crystal 253 may be provided on the surface in contact with the liquid crystal 253.

[0207] In FIG. 24, the polarizing plate 131 is adhered to the substrate 71 by the adhesive layer 157. Also, the backlight 133 is adhered to the polarizing plate 131 by the adhesive layer 158. Also, the polarizing plate 132 is located between the substrate 72 and the substrate 30. The polarizing plate 132 is adhered to the substrate 72 by the adhesive layer 155 and is also adhered to the substrate 30 (specifically, a part of the insulating layer 161 on the substrate 30) by the adhesive layer 156.

[0208] Note that in the above, a liquid crystal element to which the FFS mode is applied has been shown. In addition to that, there are also V ​​​​​A (Vertical Alignment) mode, TN (Twisted Nematic) mode, IPS (In-Plane-Switching) mode, ASM (Axially Symmetric aligned Micro-cell) mode, OCB (Optically Compensated Birefringence) mode, FLC (Ferroelectric Liquid Crystal) mode, AFLC (AntiFerroelectric Liquid Crystal) mode, etc. can be used. OCB (Optically Compensated Birefringence) mode, FLC (Ferroelectric Liquid Crystal) mode , AFLC (AntiFerroelectric Liquid Crystal) mo de, etc. can be used.

[0209] Also, as the liquid crystal, thermotropic liquid crystal, low molecular liquid crystal, polymer liquid crystal, ferroelectric liquid crystal, antiferroelectric liquid crystal, polymer dispersed liquid crystal (PDLC: Polymer Dispersed L iquid Crystal), etc. can be used. Also, using a liquid crystal that exhibits a blue phase is preferred because an alignment film is not required and a wide viewing angle can be obtained.

[0210] 〔Cross-sectional Configuration Example 12〕 FIG. 25 is a cross-sectional configuration example of a touch panel when a liquid crystal display device is applied as the display panel 70. In the touch panel shown in FIG. 25, the polarizing plate 132 is disposed on the viewing side rather than the electrodes such as those constituting the touch sensor. Specifically, a substrate 114 on which electrodes 31, electrodes 32, etc. are formed is adhered to the substrate 72 by an adhesive layer 152, and the polarizing plate 132 is adhered to the substrate 114 by an adhesive layer 155. Also, on the viewing side of the polarizing plate 132, a protective substrate 130 adhered to the polarizing plate 132 by an adhesive layer 156 is provided. On the substrate 114, when using a flexible film or the like, the thickness of the touch panel can be reduced.

[0211] On the substrate 114, when using a flexible film or the like, the thickness of the touch panel can be reduced This is preferable because it can be done.

[0212] 〔Cross-sectional configuration example 13〕 FIG. 26 shows a cross-sectional configuration example of a touch panel when a liquid crystal display device is applied as a display panel. This is the case. The touch panel shown in FIG. 26 shows an example in which electrodes and the like constituting the touch sensor are formed on the surface of the substrate 72 on the substrate 71 side. Specifically, on the substrate 72, there are an electrode 32, an electrode 33, wirings 41 (not shown), wirings 42, etc., an insulating layer 161 covering these, and a bridge electrode 34 and the like are provided on the insulating layer 1 61. Further, an insulating layer 233 is provided to cover the electrodes and the like constituting the touch sensor. Furthermore, a coloring layer 231, a light shielding layer 232, etc. are provided on the insulating layer 233. On the opposite surface of the substrate 72, a polarizing plate 132 is adhered by an adhesive layer 155. Also, a protective substrate 130 is adhered to the polarizing plate 132 by an adhesive layer 156.

[0213] With such a configuration, the substrate can be shared between the input device and the display panel, and since one surface of the substrate 72 can be used as a touch surface, the thickness of the touch panel can be further reduced. This is possible.

[0214] By adopting such a configuration, the substrate can be shared between the input device and the display panel, and since one surface of the substrate 72 can be used as a touch surface, the thickness of the touch panel can be further reduced. This can be achieved.

[0215] 〔Cross-sectional configuration example 14〕 FIG. 27 shows a cross-sectional configuration example of a touch panel when a liquid crystal display device is applied as a display panel. This is the case. The touch panel shown in FIG. 27 shows an example in which electrodes and the like constituting the touch sensor are provided on the surface opposite to the surface on the substrate 71 side of the substrate 72. Specifically, on the surface opposite to the surface on which the coloring layer 231 and the like of the substrate 72 are provided, a bridge electrode 34 and a bridge electrode are provided. On the surface opposite to the surface on which the coloring layer 231 and the like of the substrate 72 are provided, a bridge electrode 34 and a bridge electrode An insulating layer 161 covering a part of the pole 34, and an electrode 31, an electrode 32, a wiring 41 ( not shown), a wiring 42, etc. are provided on the insulating layer 161. Further, a polarizing plate 132 is attached to the substrate 72 by an adhesive layer 152, and a protective substrate 13 0 is attached to the polarizing plate 132 by an adhesive layer 156.

[0216] The above is the description of the cross-sectional configuration example.

[0217] 〔Example of manufacturing method〕 Here, a method for manufacturing a flexible touch panel will be described.

[0218] Here, for the sake of convenience, a configuration including pixels and circuits, a configuration including optical members such as color filters, a configuration including electrodes and wirings constituting a touch sensor, etc. will be referred to as an element layer. The element layer includes, for example, a display element, and in addition to the display element, it may be provided with wirings electrically connected to the display element, elements such as transistors used for pixels and circuits. Also, here, a support (for example, the substrate 91 or the substrate 191 in FIG. 23) having an insulating surface on which the element layer is formed will be referred to as a substrate.

[0219] Further, here, a method of forming an element layer on a substrate having a flexible insulating surface includes a method of directly forming an element layer on the substrate, and a method of forming an element layer on a rigid support substrate and then peeling the element layer and the support substrate and transferring the element layer to the substrate.

[0220] When the material constituting the substrate has heat resistance to the heat applied in the element layer forming process, it is preferable to directly form the element layer on the substrate because the process is simplified. At this time, the substrate

[0221] ​​​​​​​​Forming the element layer in a state fixed to the support substrate is preferable because it facilitates transfer within the apparatus and between apparatuses. This is preferable.

[0222] Also, when using a method of transferring to a substrate after forming the element layer on the support substrate, first, a release layer and an insulating layer are laminated on the support substrate, and the element layer is formed on the insulating layer. Subsequently, the support substrate and the element layer are peeled off and transferred to the substrate. At this time, a material that causes peeling at the interface between the support substrate and the release layer, the interface between the release layer and the insulating layer, or within the release layer may be selected. For example, 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 as the release layer, and a layer in which a plurality of silicon nitrides or silicon oxynitrides are laminated is preferably used as the insulating layer on the release layer. Using a high melting point metal material is preferable because the degree of freedom in the element layer formation process increases. Peeling may be performed by applying mechanical force, etching the release layer, or dropping a liquid onto a part of the peeling interface to penetrate the entire peeling interface. Alternatively, peeling may be performed by applying heat to the peeling interface using the difference in thermal expansion. This is preferable.

[0223] For example, 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 as the release layer, and a layer in which a plurality of silicon nitrides or silicon oxynitrides are laminated is preferably used as the insulating layer on the release layer. Using a high melting point metal material is preferable because the degree of freedom in the element layer formation process increases. For example, 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 as the release layer, and a layer in which a plurality of silicon nitrides or silicon oxynitrides are laminated is preferably used as the insulating layer on the release layer. Using a high melting point metal material is preferable because the degree of freedom in the element layer formation process increases. Using a high melting point metal material is preferable because the degree of freedom in the element layer formation process increases. This is preferable.

[0224] Peeling may be performed by applying mechanical force, etching the release layer, or dropping a liquid onto a part of the peeling interface to penetrate the entire peeling interface. Alternatively, peeling may be performed by applying heat to the peeling interface using the difference in thermal expansion. This is preferable. Alternatively, peeling may be performed by applying heat to the peeling interface using the difference in thermal expansion.

[0225] Also, when peeling is possible at the interface between the support substrate and the insulating layer, the release layer may not be provided. For example, using glass as the support substrate and an organic resin such as polyimide as the insulating layer, a starting point for peeling is formed by locally heating a part of the organic resin using laser light or the like, and peeling may be performed at the interface between the glass and the insulating layer. Alternatively, a metal layer is provided between the support substrate and the insulating layer made of the organic resin, and the metal layer is heated by passing an electric current through the metal layer. For example, using glass as the support substrate and an organic resin such as polyimide as the insulating layer, a starting point for peeling is formed by locally heating a part of the organic resin using laser light or the like, and peeling may be performed at the interface between the glass and the insulating layer. Alternatively, a metal layer is provided between the support substrate and the insulating layer made of the organic resin, and the metal layer is heated by passing an electric current through the metal layer. This is preferable. Peeling may be performed at the interface between the metal layer and the insulating layer. Alternatively, a layer of a material that absorbs light (such as a metal, semiconductor, insulator, etc.) is provided between the support substrate and the insulating layer made of an organic resin, and the layer is irradiated with light such as laser light to locally heat it to form a starting point for peeling. Here, In the method shown, the insulating layer made of an organic resin can be used as a substrate. In the method shown, 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. can 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

[0226] 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. can 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 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. can 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 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. can 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 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. can 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 a substrate in which an inorganic filler is mixed with an organic resin to reduce the coefficient of thermal expansion can be used. / 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 a substrate in which an inorganic filler is mixed with an organic resin to reduce the coefficient of thermal expansion can be used. -6 / 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 a substrate in which an inorganic filler is mixed with an organic resin to reduce the coefficient of thermal expansion can be used. / 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 a substrate in which an inorganic filler is mixed with an organic resin to reduce the coefficient of thermal expansion can be used. When a fibrous body is contained in the above materials, high-strength fibers of an organic compound or an inorganic compound are used for the fibrous body. High-strength fibers specifically refer to fibers with a high tensile elastic modulus or Young's modulus. Representative examples include polyvinyl alcohol-based fibers, polyester-based fibers, polyamide-based fibers, polyethylene-based fibers, aramid-based fibers, polyphenylene benzobisoxazole fibers, glass fibers, or carbon fibers. As glass fibers, E glass When a fibrous body is contained in the above materials, high-strength fibers of an organic compound or an inorganic compound are used for the fibrous body. High-strength fibers specifically refer to fibers with a high tensile elastic modulus or Young's modulus. Representative examples include polyvinyl alcohol-based fibers, polyester-based fibers, polyamide-based fibers, polyethylene-based fibers, aramid-based fibers, polyphenylene benzobisoxazole fibers, glass fibers, or carbon fibers. As glass fibers, E glass

[0227] When a fibrous body is contained in the above materials, high-strength fibers of an organic compound or an inorganic compound are used for the fibrous body. High-strength fibers specifically refer to fibers with a high tensile elastic modulus or Young's modulus. Representative examples include polyvinyl alcohol-based fibers, polyester-based fibers, polyamide-based fibers, polyethylene-based fibers, aramid-based fibers, polyphenylene benzobisoxazole fibers, glass fibers, or carbon fibers. As glass fibers, E glass When a fibrous body is contained in the above materials, high-strength fibers of an organic compound or an inorganic compound are used for the fibrous body. High-strength fibers specifically refer to fibers with a high tensile elastic modulus or Young's modulus. Representative examples include polyvinyl alcohol-based fibers, polyester-based fibers, polyamide-based fibers, polyethylene-based fibers, aramid-based fibers, polyphenylene benzobisoxazole fibers, glass fibers, or carbon fibers. As glass fibers, E glass When a fibrous body is contained in the above materials, high-strength fibers of an organic compound or an inorganic compound are used for the fibrous body. High-strength fibers specifically refer to fibers with a high tensile elastic modulus or Young's modulus. Representative examples include polyvinyl alcohol-based fibers, polyester-based fibers, polyamide-based fibers, polyethylene-based fibers, aramid-based fibers, polyphenylene benzobisoxazole fibers, glass fibers, or carbon fibers. As glass fibers, E glass When a fibrous body is contained in the above materials, high-strength fibers of an organic compound or an inorganic compound are used for the fibrous body. High-strength fibers specifically refer to fibers with a high tensile elastic modulus or Young's modulus. Representative examples include polyvinyl alcohol-based fibers, polyester-based fibers, polyamide-based fibers, polyethylene-based fibers, aramid-based fibers, polyphenylene benzobisoxazole fibers, glass fibers, or carbon fibers. As glass fibers, E glass When a fibrous body is contained in the above materials, high-strength fibers of an organic compound or an inorganic compound are used for the fibrous body. High-strength fibers specifically refer to fibers with a high tensile elastic modulus or Young's modulus. Representative examples include polyvinyl alcohol-based fibers, polyester-based fibers, polyamide-based fibers, polyethylene-based fibers, aramid-based fibers, polyphenylene benzobisoxazole fibers, glass fibers, or carbon fibers. As glass fibers, E glass Examples of the glass fiber include Si glass, S glass, D glass, Q glass, etc. These are used in the form of woven fabric or non-woven fabric, and a structure in which the fiber body is impregnated with resin and the resin is cured may be used as a flexible substrate. When a structure composed of a fiber body and resin is used as the flexible substrate, the reliability against breakage due to bending or local pressing is improved, which is preferable .

[0228] Alternatively, a thin glass, metal, etc. having flexibility may be used for the substrate. Alternatively, a composite material in which a glass and a resin material are bonded may be used.

[0229] For example, in the case of the configuration shown in FIG. 23, after successively forming a first release layer and an insulating layer 94 on a first support substrate, a structure in the upper layer thereof is formed. Separately from this, after successively forming a second release layer and an insulating layer 194 on a second support substrate, a structure in the upper layer thereof is formed . Subsequently, the first support substrate and the second support substrate are bonded together by an adhesive layer 151. Then, by peeling at the interface between the second release layer and the insulating layer 194, the second support substrate and the second release layer are removed, and the insulating layer 194 and the substrate 191 are bonded together by an adhesive layer 192. Also, by peeling at the interface between the first release layer and the insulating layer 94, the first support substrate and the first release layer are removed, and the insulating layer 94 and the substrate 91 are bonded together by an adhesive layer 92. Note that the peeling and bonding may be performed on either side first.

[0230] The above is the description of the method for manufacturing a flexible touch panel.

[0231] Here, examples in the case where a light-emitting element or a liquid crystal element is used as the display element are shown, but one aspect of the present invention is not limited thereto. ​​

[0232] For example, a display device using a display element such as a MEMS (Micro Electro Mechanical Syste m) element or an electron-emitting element can be used. ME As the display element using MEMS, a shutter-type MEMS display element, a light interference-type ME MS display element, etc. can be mentioned. As the electron-emitting element, carbon nanotubes can be used as well. Also, an electronic paper may be used. As the electronic paper, a microcapsule method , an electrophoresis method, an electro-wetting method, an electro-fluidic (registered trademark) method, etc. can be applied and the resulting element can be used.

[0233] This embodiment can be implemented in appropriate combination with at least a part of other embodiments described in this specification.

[0234] (Embodiment 2) In this embodiment, an example of a driving method for an input device or an input / output device according to an aspect of the present invention will be described with reference to the drawings.

[0235] [Example of sensor detection method] FIG. 28(A) is a block diagram showing the configuration of a mutual capacitance type touch sensor. FIG. 28 (A) shows a pulse voltage output circuit 601 and a current detection circuit 602. In FIG. 28 (A), the electrodes 621 to which a pulse voltage is applied and the electrodes 622 for detecting a change in current are respectively shown as six wirings each of X1-X6 and Y1-Y6. Also, FIG. 28( A) shows a capacitance 603 formed by the superposition of the electrodes 621 and the electrodes 622. Note that the functions of the electrodes 621 and the electrodes 622 may be interchanged with each other.

[0236] ​​ The pulse voltage output circuit 601 is a circuit for sequentially applying pulses to the wirings X1 - X6. When a pulse voltage is applied to the wirings X1 - X6, an electric field is generated in the electrodes 6 21 and 622 that form the capacitor 603. By utilizing the fact that the electric field generated between these electrodes causes a change in the mutual capacitance of the capacitor 6 03 due to shielding or the like, the proximity or contact of the object to be detected can be detected.

[0237] The current detection circuit 602 is a circuit for detecting a change in the current in the wirings Y1 - Y6 due to a change in the capacitance of the capacitor 603. In the wirings Y1 - Y6, there is no change in the detected current value when there is no proximity or contact of the object to be detected, but when the proximity or contact of the object to be detected causes a decrease in the capacitance, a change in which the current value decreases is detected. Note that the current can be detected using an integration circuit or the like.

[0238] Next, FIG. 28(B) shows the timing chart of the input / output waveforms in the mutual capacitance type touch sensor shown in FIG. 28(A). In FIG. 28(B), it is assumed that the object to be detected is detected for each matrix within one frame period. Also, in FIG. 28(B), two cases are shown: when the object to be detected is not detected (non-touch) and when the object to be detected is detected (touch). For the wirings Y1 - Y6, waveforms corresponding to the detected current values are shown.

[0239] A pulse voltage is sequentially applied to the wirings X1 - X6, and the waveforms in the wirings Y1 - Y6 change according to the pulse voltage. When there is no proximity or contact of the object to be detected, the waveforms in Y1 - Y6 change uniformly in response to the change in the voltage of the wirings X1 - X6. On the other hand, when the object to be detected is in proximity ​​​​​​​​​​​Or at the point of contact, since the current value decreases, the waveform of the corresponding voltage value also changes. changes.

[0240] In this way, by detecting a change in capacitance, it is possible to detect the proximity or contact of the object to be detected. It can be done.

[0241] Also, as the pulse voltage output circuit 601 and the current detection circuit 602, it is preferably implemented in the form of an integrated IC on the touch panel or on the substrate inside the housing of the electronic device. When using a flexible touch panel, since the parasitic capacitance increases at the bent portion and there is a risk that the influence of noise becomes large, it is preferable to use an IC to which a driving method that is less affected by noise is applied. For example, it is preferable to use an IC to which a driving method for increasing the signal-to-noise ratio (S / N ratio) is applied. When using a flexible touch panel, since the parasitic capacitance increases at the bent portion and there is a risk that the influence of noise becomes large, it is preferable to use an IC to which a driving method that is less affected by noise is applied. For example, it is preferable to use an IC to which a driving method for increasing the signal-to-noise ratio (S / N ratio) is applied. When using a flexible touch panel, since the parasitic capacitance increases at the bent portion and there is a risk that the influence of noise becomes large, it is preferable to use an IC to which a driving method that is less affected by noise is applied. For example, it is preferable to use an IC to which a driving method for increasing the signal-to-noise ratio (S / N ratio) is applied. When using a flexible touch panel, since the parasitic capacitance increases at the bent portion and there is a risk that the influence of noise becomes large, it is preferable to use an IC to which a driving method that is less affected by noise is applied. For example, it is preferable to use an IC to which a driving method for increasing the signal-to-noise ratio (S / N ratio) is applied. is applied.

[0242] Also, in FIG. 28(A), a configuration of a capacitive matrix type touch sensor in which only the capacitor 603 is provided at the intersection of the wirings as the touch sensor is shown, but it may be an active matrix type touch sensor including a transistor and a capacitor. FIG. 29 shows an example of one sensor circuit included in the active matrix type touch sensor. Also, in FIG. 28(A), a configuration of a capacitive matrix type touch sensor in which only the capacitor 603 is provided at the intersection of the wirings as the touch sensor is shown, but it may be an active matrix type touch sensor including a transistor and a capacitor. FIG. 29 shows an example of one sensor circuit included in the active matrix type touch sensor. Also, in FIG. 28(A), a configuration of a capacitive matrix type touch sensor in which only the capacitor 603 is provided at the intersection of the wirings as the touch sensor is shown, but it may be an active matrix type touch sensor including a transistor and a capacitor. FIG. 29 shows an example of one sensor circuit included in the active matrix type touch sensor. is shown.

[0243] The sensor circuit has a capacitor 603, a transistor 611, a transistor 612, and a transistor 613. The transistor 613 has a signal G2 applied to its gate, a voltage VRES applied to one of its source or drain, and the other is electrically connected to one electrode of the capacitor 603 and the gate of the transistor 611. One of the source or drain of the transistor 611 is electrically connected to one of the source or drain of the transistor 612, and the other has a voltage V Also, in FIG. 28(A), a configuration of a capacitive matrix type touch sensor in which only the capacitor 603 is provided at the intersection of the wirings as the touch sensor is shown, but it may be an active matrix type touch sensor including a transistor and a capacitor. FIG. 29 shows an example of one sensor circuit included in the active matrix type touch sensor. Also, in FIG. 28(A), a configuration of a capacitive matrix type touch sensor in which only the capacitor 603 is provided at the intersection of the wirings as the touch sensor is shown, but it may be an active matrix type touch sensor including a transistor and a capacitor. FIG. 29 shows an example of one sensor circuit included in the active matrix type touch sensor. Also, in FIG. 28(A), a configuration of a capacitive matrix type touch sensor in which only the capacitor 603 is provided at the intersection of the wirings as the touch sensor is shown, but it may be an active matrix type touch sensor including a transistor and a capacitor. FIG. 29 shows an example of one sensor circuit included in the active matrix type touch sensor. Also, in FIG. 28(A), a configuration of a capacitive matrix type touch sensor in which only the capacitor 603 is provided at the intersection of the wirings as the touch sensor is shown, but it may be an active matrix type touch sensor including a transistor and a capacitor. FIG. 29 shows an example of one sensor circuit included in the active matrix type touch sensor. SS is supplied. The transistor 612 has a signal G1 applied to its gate, and the other of the source or drain is electrically connected to the wiring ML. A voltage VSS is supplied to the other electrode of the capacitor 603. is supplied.

[0244] Subsequently, the operation of the sensor circuit will be described. First, by applying a potential that turns on the transistor 613 as the signal G2, a potential corresponding to the voltage VRES is applied to the node n to which the gate of the transistor 611 is connected. Next, by applying a potential that turns off the transistor 613 as the signal G2, the potential of the node n is held. is supplied to the node n to which the gate of the transistor 611 is connected. Next, by applying a potential that turns off the transistor 613 as the signal G2, the potential of the node n is held. Subsequently, as the capacitance of the capacitor 603 changes due to the proximity or contact of a detection object such as a finger, the potential of the node n changes from VRES. Subsequently, as the capacitance of the capacitor 603 changes due to the proximity or contact of a detection object such as a finger, the potential of the node n changes from VRES.

[0245] Subsequently, as the capacitance of the capacitor 603 changes due to the proximity or contact of a detection object such as a finger, the potential of the node n changes from VRES. Subsequently, as the capacitance of the capacitor 603 changes due to the proximity or contact of a detection object such as a finger, the potential of the node n changes from VRES.

[0246] For the read operation, a potential that turns on the transistor 612 is applied to the signal G1. The current flowing through the transistor 611 according to the potential of the node n, that is, the current flowing through the wiring ML, changes. By detecting this current, the proximity or contact of the detection object can be detected. For the read operation, a potential that turns on the transistor 612 is applied to the signal G1. The current flowing through the transistor 611 according to the potential of the node n, that is, the current flowing through the wiring ML, changes. By detecting this current, the proximity or contact of the detection object can be detected. For the read operation, a potential that turns on the transistor 612 is applied to the signal G1. The current flowing through the transistor 611 according to the potential of the node n, that is, the current flowing through the wiring ML, changes. By detecting this current, the proximity or contact of the detection object can be detected. For the read operation, a potential that turns on the transistor 612 is applied to the signal G1. The current flowing through the transistor 611 according to the potential of the node n, that is, the current flowing through the wiring ML, changes. By detecting this current, the proximity or contact of the detection object can be detected.

[0247] As the transistors 611, 612, and 613, it is preferable to use transistors in which an oxide semiconductor is applied to the semiconductor layer in which the channel is formed. In particular, by applying such a transistor to the transistor 613, the potential of the node n can be held over a long period of time, and the frequency of the operation of supplying VRES to the node n again (refresh operation) can be reduced. As the transistors 611, 612, and 613, it is preferable to use transistors in which an oxide semiconductor is applied to the semiconductor layer in which the channel is formed. In particular, by applying such a transistor to the transistor 613, the potential of the node n can be held over a long period of time, and the frequency of the operation of supplying VRES to the node n again (refresh operation) can be reduced. In particular, by applying such a transistor to the transistor 613, the potential of the node n can be held over a long period of time, and the frequency of the operation of supplying VRES to the node n again (refresh operation) can be reduced. In particular, by applying such a transistor to the transistor 613, the potential of the node n can be held over a long period of time, and the frequency of the operation of supplying VRES to the node n again (refresh operation) can be reduced. In particular, by applying such a transistor to the transistor 613, the potential of the node n can be held over a long period of time, and the frequency of the operation of supplying VRES to the node n again (refresh operation) can be reduced.

[0248] [Configuration example of an in-cell type touch panel] In the above description, the case where the electrodes constituting the touch sensor are formed on a substrate different from the substrate on which the display element or the like is provided has been shown. However, one or both of a pair of electrodes constituting the touch sensor may be provided on the substrate on which the display element or the like is provided.

[0249] Hereinafter, a configuration example of a touch panel in which a touch sensor is incorporated in a display unit having a plurality of pixels will be described. Here, an example in which a liquid crystal element is applied as a display element provided in the pixel will be shown.

[0250] FIG. 30(A) is an equivalent circuit diagram of a part of a pixel circuit provided in the display unit of the touch panel illustrated in this configuration example.

[0251] One pixel has at least a transistor 3503 and a liquid crystal element 3504. Further, a wiring 3501 is electrically connected to the gate of the transistor 3503, and a wiring 3502 is electrically connected to one of the source or the drain.

[0252] The pixel circuit has a plurality of wirings extending in the X direction (for example, wirings 3510_1 and 3510_2) and a plurality of wirings extending in the Y direction (for example, wiring 3511), and these are provided so as to cross each other, and a capacitance is formed therebetween.

[0253] Among the pixels provided in the pixel circuit, a plurality of adjacent pixels are such that one electrode of the liquid crystal element provided in each of them is electrically connected to form one block. The block is classified into two types: an island-shaped block (for example, blocks 3515_1 and 3515_2) and a line-shaped block extending in the Y direction (for example, block 3516). This is the case. Note that in FIG. 30, only a part of the pixel circuit is shown, but actually these two types of blocks are repeatedly arranged in the X direction and the Y direction.

[0254] The wiring 3510_1 (or 3510_2) extending in the X direction is electrically connected to the island-shaped block 351 5_1 (or the block 3515_2). Although not shown, the wiring 3510_1 extending in the X direction electrically connects a plurality of island-shaped blocks 3515_1 arranged discontinuously along the X direction via a line-shaped block. Also, the wiring 3511 extending in the Y direction is electrically connected to the line-shaped block 3516.

[0255] FIG. 30(B) is an equivalent circuit diagram showing the connection configuration of a plurality of wirings 3510 extending in the X direction and a plurality of wirings 3511 extending in the Y direction. Each of the wirings 3510 extending in the X direction can input an input voltage or a common potential. Also, each of the wirings 3511 extending in the Y direction can input a ground potential or be electrically connected to a detection circuit.

[0256] Hereinafter, the operation of the above-described touch panel will be described with reference to FIGS. 31(A) and 31(B).

[0257] Here, one frame period is divided into a writing period and a detection period. The writing period is a period for writing image data to the pixels, and the wiring 3510 (also referred to as a gate line or a scanning line) is sequentially selected. On the other hand, the detection period is a period for sensing by the touch sensor, and the wiring 3510 extending in the X direction is sequentially selected and an input voltage is input.

[0258] ​​​​​​​​FIG. 31(A) is an equivalent circuit diagram during a writing period. During the writing period, a common potential is input to both a wiring 3510 extending in the X direction and a wiring 3511 extending in the Y direction. A common potential is input to both a wiring 3510 extending in the X direction and a wiring 3511 extending in the Y direction. is input.

[0259] FIG. 31(B) is an equivalent circuit diagram at a certain point in time during a detection period. During the detection period, each of the wirings 3511 extending in the Y direction is electrically connected to a detection circuit. Also, among the wirings 3510 extending in the X direction, an input voltage is input to the selected one, and a common potential is input to the others. Each of the wirings 3511 extending in the Y direction is electrically connected to a detection circuit. Also, among the wirings 3510 extending in the X direction, an input voltage is input to the selected one, and a common potential is input to the others. is input to the selected one, and a common potential is input to the others. is input.

[0260] Note that the driving method exemplified here can be applied not only to the in-cell method but also to the touch panel exemplified above, and can be used in combination with the method shown in the above driving method example. Note that the driving method exemplified here can be applied not only to the in-cell method but also to the touch panel exemplified above, and can be used in combination with the method shown in the above driving method example. is possible.

[0261] Thus, it is preferable to separately provide the writing period of the image and the period for sensing by the touch sensor. Thereby, it is possible to suppress a decrease in the sensitivity of the touch sensor due to noise during pixel writing. Thereby, it is possible to suppress a decrease in the sensitivity of the touch sensor due to noise during pixel writing. is possible.

[0262] (Embodiment 3) In this embodiment, an electronic device and a lighting device according to an aspect of the present invention will be described with reference to the drawings. will be described.

[0263] An electronic device or a lighting device can be manufactured using an input device, a display device, or an input / output device according to an aspect of the present invention. Using an input device, a display device, or an input / output device according to an aspect of the present invention, an electronic device or a lighting device having a curved surface and high reliability can be manufactured. Also, using an input device, a display device, or an input / output device according to an aspect of the present invention, an electronic device or a lighting device having flexibility and high reliability can be manufactured. An electronic device or a lighting device can be manufactured using an input device, a display device, or an input / output device according to an aspect of the present invention. Using an input device, a display device, or an input / output device according to an aspect of the present invention, an electronic device or a lighting device having a curved surface and high reliability can be manufactured. Also, using an input device, a display device, or an input / output device according to an aspect of the present invention, an electronic device or a lighting device having flexibility and high reliability can be manufactured. An illuminating device can be manufactured. Also, an electronic device or an illuminating device with improved detection sensitivity and detection accuracy of a touch sensor can be manufactured by using the input device or the input / output device according to one aspect of the present invention.

[0264] Examples of the electronic device include 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 cellular phone or a mobile phone device), a portable game machine, a portable information terminal, an audio reproduction device, a large game machine such as a pachinko machine, and the like.

[0265] In addition, when the electronic device or the illuminating device according to one aspect of the present invention has flexibility, it can also be incorporated along the inner wall or outer wall of a house or a building, or the curved surface of the interior or exterior of an automobile.

[0266] Further, the electronic device according to one aspect of the present invention may have a secondary battery, and it is preferable that the secondary battery can be charged by using non-contact power transmission.

[0267] Examples of the secondary battery include lithium ion secondary batteries such as lithium polymer batteries (lithium ion polymer batteries) using a gel electrolyte, lithium ion batteries, nickel metal hydride batteries, nickel cadmium batteries, organic radical batteries, lead storage batteries, air secondary batteries, nickel zinc batteries, silver zinc batteries, and the like.

[0268] The electronic device according to one aspect of the present invention may have an antenna. By receiving a signal with the antenna, images, information, etc. can be displayed on the display unit. Further, when the electronic device has a secondary battery, the antenna may be used for non-contact power transmission.

[0269] Figures 32(A), (B), (C1), (C2), (D), and (E) show an example of an electronic device having a curved display unit 70 00. The display unit 7000 has a curved display surface and can perform display along the curved display surface. Note that the display unit 7000 may have flexibility and may be flexible.

[0270] The display unit 7000 is manufactured using a display device or an input / output device according to an aspect of the present invention. According to an aspect of the present invention, an electronic device having a curved display unit and high reliability can be provided

[0271] Figure 32(A) shows an example of a mobile phone. The mobile phone 7100 includes a housing 7101, a display unit 7000, operation buttons 7103, an external connection port 7104, a speaker 7105, a microphone 7106, etc.

[0272] The mobile phone 7100 shown in Figure 32(A) includes a touch sensor in the display unit 7000. Any operation such as making a call or inputting characters can be performed by touching the display unit 7000 with a finger or a stylus

[0273] In addition, by operating the operation buttons 7103, the power can be turned on and off, and the type of image displayed on the display unit 7000 can be switched. For example, it can be switched from the email creation screen to the main menu screen

[0274] Figure 32(B) shows an example of a television device. In the television device 7200, the display unit 7000 is incorporated in the housing 7 201. Here, a configuration in which the housing 7 201 is supported by a stand 7203 is shown.

[0275] ​​​​​​​ The operation of the television apparatus 7200 shown in FIG. 32(B) can be performed by operation switches provided in the housing 7201 or by a separate remote control operation unit 7211. Alternatively, the display unit 70 00 may be provided with a touch sensor, and the operation can be performed by touching the display unit 7000 with a finger or the like. The remote control operation unit 7211 may have a display unit for displaying information output from the remote control operation unit 7211. The operation keys or touch panel provided in the remote control operation unit 7211 can be used to operate channels and volume, and the video displayed on the display unit 7000 can be operated. Note that the television apparatus 7200 has a configuration including a receiver, a modem, etc. The receiver can receive general television broadcasts. Also, by connecting to a communication network by wire or wirelessly via a modem, one-way (from sender to receiver) or two-way (between sender and receiver, or between receivers, etc.) information communication is also possible. FIGS. 32(C1), (C2), (D), and (E) show an example of a portable information terminal. Each portable information

[0276] terminal has a housing 7301 and a display unit 7000. Further, it may have operation buttons, external connection ports, speakers, microphones, antennas, or batteries, etc. The display unit 7000 is provided with a touch sensor. The operation of the portable information terminal can be performed by touching the display unit 700 0 with a finger or a stylus.

[0277] FIG. 32(C1) is a perspective view of the portable information terminal 7300, and FIG. 32(C2) is a top view of the portable information terminal 7300. FIG. 32(D) is a perspective view of the portable information terminal 7310. Note that the display unit 7000 is provided with a touch sensor. The operation of the portable information terminal can be performed by touching the display unit 700 0 with a finger or a stylus. 0 with a finger or a stylus.

[0278] FIG. 32(C1) is a perspective view of the portable information terminal 7300, and FIG. 32(C2) is a top view of the portable information terminal 7300. FIG. 32(D) is a perspective view of the portable information terminal 7310. FIG. 32E is a perspective view of the portable information terminal 7320. FIG.

[0279] The portable information terminal exemplified in this embodiment is, for example, a telephone, a notebook, an information viewing device, etc. Specifically, the device can be used as a smartphone. The portable information terminal exemplified in this embodiment may be, for example, a mobile phone, an electronic mail, or the like. It can be used for a variety of purposes, including browsing and writing documents, playing music, communicating on the Internet, and playing computer games. Various applications can be executed.

[0280] The mobile information terminal 7300, the mobile information terminal 7310, and the mobile information terminal 7320 are Image information can be displayed on multiple surfaces. For example, the image shown in Fig. 32(C1) and (D) As shown in FIG. 7, three operation buttons 7302 are displayed on one side, and information 7303 shown as a rectangle is displayed on the other side. In Fig. 32(C1) and (C2), information is displayed on the top of the mobile information terminal. FIG. 32(D) shows an example in which information is displayed on the side of the mobile information terminal. Also, information may be displayed on three or more sides of a mobile information terminal. In FIG. 32(E), information 7 304, information 7305, and information 7306 are displayed on different surfaces.

[0281] An example of such information is notifications from social networking services (SNS). , display notifying you of incoming e-mails or telephone calls, subject of e-mails or sender name , date and time, time, battery level, antenna reception strength, etc. Or, the information is displayed Instead of information, operation buttons, icons, etc. may be displayed at the position where the information is displayed.

[0282] For example, the user of the portable information terminal 7300 can check the display (here, the information 7303) while the portable information terminal 7300 is stored in the breast pocket of the clothing.

[0283] Specifically, the telephone number or name of the caller of the incoming call is displayed at a position where it can be observed from above the portable information terminal 7300. The user can check the display without taking out the portable information terminal 7300 from the pocket and determine whether to answer the call.

[0284] Figs. 32(F) to (H) show an example of an illumination device having a curved light-emitting portion.

[0285] The light-emitting portions of the illumination devices shown in Figs. 32(F) to (H) are manufactured using a display device according to an aspect of the present invention, or an input / output device or the like. According to an aspect of the present invention, an illumination device having a curved light-emitting portion and having high reliability can be provided.

[0286] The illumination device 7400 shown in Fig. 32(F) includes a light-emitting portion 7402 having a wavy light-emitting surface. Therefore, it is an illumination device with high design quality.

[0287] The light-emitting portion 7412 included in the illumination device 7410 shown in Fig. 32(G) has a configuration in which two convexly curved light-emitting portions are symmetrically arranged. Therefore, the entire area around the illumination device 7410 can be illuminated.

[0288] The illumination device 7420 shown in Fig. 32(H) includes a light-emitting portion 7422 that is concavely curved. Therefore, since the light emitted from the light-emitting portion 7422 is condensed on the front surface of the illumination device 7420, it is suitable for illuminating a specific range brightly. Also, by adopting such a form, there is an effect that it is difficult to form shadows. ​​​​​

[0289] In addition, each light-emitting part included in the lighting device 7400, the lighting device 7410, and the lighting device 7420 may have flexibility. The light-emitting part may be fixed with members such as a plastic member or a movable frame, and may be configured such that the light-emitting surface of the light-emitting part can be freely curved according to the application. The lighting device 7400, the lighting device 7410, and the lighting device 7420 each have a base 7401 provided with an operation switch 7403 and a light-emitting part supported by the base 7401. Here, although the lighting device in which the light-emitting part is supported by the base is exemplified, the housing including the light-emitting part can also be fixed to the ceiling or used to be suspended from the ceiling. Since the light-emitting surface can be curved and used, the light-emitting surface can be curved in a concave shape to brightly illuminate a specific area, or the light-emitting surface can be curved in a convex shape to brightly illuminate the entire room.

[0290] Examples of a portable information terminal having a flexible display unit 7001 are shown in FIGS. 33(A1), (A2), (B) to (I). The display unit 7001 is manufactured using a display device, an input / output device, or the like according to an aspect of the present invention. For example, a display device or an input / output device or the like that can be bent with a curvature radius of 0.01 mm or more and 150 mm or less can be applied. The display unit 7001 may also be provided with a touch sensor, and the portable information terminal can be operated by touching the display unit 7001 with a finger or the like. According to an aspect of the present invention, an electronic device having a flexible display unit and high reliability can be provided.

[0291]

[0292]

[0293]

[0294] ​​​​​​​​​​​​FIG. 33(A1) is a perspective view showing an example of a mobile information terminal, and FIG. 33(A2) is a side view showing an example of the mobile information terminal. The mobile information terminal 7500 includes a housing 7501, a display unit 7 001, a drawer member 7502, operation buttons 7503, and the like.

[0295] The mobile information terminal 7500 has a flexible display unit 7 001 wound in a roll shape inside the housing 7501.

[0296] In addition, the mobile information terminal 7500 can receive a video signal by a built-in control unit and display the received video on the display unit 7001. Also, a battery is built in the mobile information terminal 7500. Further, the housing 7501 is provided with a terminal portion for connecting a connector, and it may be configured to directly supply a video signal and power from the outside by wire. Moreover, operations such as turning on / off the power and switching the displayed video can be performed by the operation buttons 7503. Note that FIGS. 33(A1), (A2), and (B) show an example in which the operation buttons 7503 are arranged on the side surface of the mobile information terminal

[0297] 7500, but it is not limited thereto, and they may be arranged on the same surface (front surface) as the display surface of the mobile information terminal 7500 or on the back surface.

[0298] FIG. 33(B) shows the mobile information terminal 7500 with the display unit 7001 pulled out by the drawer member 7502. In this state, a video can be displayed on the display unit 7001. Also, the mobile information terminal 75 00 may be configured to perform different displays between the state of FIG. 33(A1) in which a part of the display unit 7001 is wound in a roll shape and the state of FIG. 33(B) in which the display unit 700 1 is pulled out by the drawer member 7502. For example, when in the state of FIG. 33(A1), the table 00 is shown. By hiding the rolled-up portion of the display unit 7001, the mobile information terminal 7500 Power consumption can be reduced.

[0299] When the display unit 7001 is pulled out, the display surface of the display unit 7001 is made flat. To fix the display unit 7001 in place, a reinforcing frame may be provided on the side of the display unit 7001 .

[0300] In addition to this configuration, a speaker is provided on the housing, and the audio signal received together with the video signal is output. The configuration may be such that sound is outputted.

[0301] 33(C) to (E) show an example of a foldable portable information terminal. In the unfolded state, in Figure 33(D), the unfolded state or the folded state In the other state, which is in the process of changing to the other state, the portable information terminal 760 in the folded state in FIG. 33(E) The portable information terminal 7600 is highly portable when folded and can be folded up to 100 mm in length. The large, seamless display area provides excellent visibility.

[0302] The display unit 7001 is supported by three housings 7601 connected by hinges 7602. By bending the two housings 7601 via the hinge 7602, The terminal 7600 can be reversibly transformed from an unfolded state to a folded state.

[0303] An example of a foldable portable information terminal is shown in Figures 33(F) and 33(G). In FIG. 33(G), the display unit 7001 is folded inward. The mobile information terminal 7650 is folded so that the 7001 faces outward. The terminal 7650 has a display unit 7001 and a non-display unit 7651. When the mobile information terminal 7650 is not in use, by folding it so that the display unit 7001 faces inward, dirt and damage to the display unit 7001 can be suppressed.

[0304] FIG. 33(H) shows an example of a flexible mobile information terminal. The mobile information terminal 7700 has a housing 7701 and a display unit 7001. Further, it may have buttons 7703a and 7703b which are input means, speakers 7704a and 7704b which are audio output means, an external connection port 7 705, a microphone 7706, etc. Also, the mobile information terminal 7700 can be equipped with a flexible battery 7709. The battery 7709 may be arranged, for example, overlapping the display unit 7 001.

[0305] The housing 7701, the display unit 7001, and the battery 7709 have flexibility. Therefore, it is easy to bend the mobile information terminal 7700 into a desired shape or apply torsion to the mobile information terminal 7700. For example, the mobile information terminal 7700 can be used by bending it so that the display unit 7001 faces inward or outward. Or, the mobile information terminal 7700 can also be used in a state where it is wound into a roll shape. Since the housing 7701 and the display unit 700 1 can be freely deformed in this way, the mobile information terminal 7700 has the advantage of being difficult to break even when it falls or when an unintended external force is applied.

[0306] Also, since the mobile information terminal 7700 is lightweight, it can be used by holding the upper part of the housing 7701 with a clip or the like and hanging it, or by fixing the housing 7701 to a wall surface with a magnet or the like in various situations with good convenience. ​

[0307] FIG. 33(I) shows an example of a wristwatch-type portable information terminal. The device includes a keyboard 7801, a display unit 7001, an input / output terminal 7802, and an operation button 7803. The handheld terminal 7801 functions as a housing. The battery 7805 may be mounted on the display unit 70. It may be placed overlapping with band 01 or band 7801.

[0308] The band 7801, the display portion 7001, and the battery 7805 are flexible. Therefore, it is easy to bend the portable information terminal 7800 into a desired shape.

[0309] The operation button 7803 is used to set the time, turn the power on and off, and turn wireless communication on and off. It supports various functions such as auto-start, silent mode and power saving mode. For example, the operating system built into the portable information terminal 7800 can be Depending on the system, the functions of the operation buttons 7803 can be freely set.

[0310] In addition, by touching an icon 7804 displayed on the display unit 7001 with a finger or the like, the application You can start the application.

[0311] In addition, the portable information terminal 7800 can perform short-distance wireless communication in accordance with a communication standard. For example, by communicating with a wireless headset, You can also make calls using Lee.

[0312] The portable information terminal 7800 may also have an input / output terminal 7802. When it has 802, it can directly exchange data with other information terminals via a connector. Also, charging can be performed via the input / output terminal 7802. In addition, the charging operation of the portable information terminal exemplified in this embodiment may be performed by non-contact power transmission without passing through the input / output terminal.

[0313] Fig. 34(A) shows the exterior of the automobile 9700. Fig. 34(B) shows the driver's seat of the automobile 9700. The automobile 9700 has a vehicle body 9701, wheels 9702, a dashboard 9703, a rearview mirror 9704, etc. The display device or input / output device according to one aspect of the present invention can be used for the display part of the automobile 9700, etc. For example, the display device or input / output device according to one aspect of the present invention can be provided in the display parts 9710 to 9715 shown in Fig. 34(B).

[0314] The display part 9710 and the display part 9711 are a display device or an input / output device provided on the windshield of the automobile. The display device or input / output device according to one aspect of the present invention can be a so-called see-through display device or input / output device in which the electrodes of the display device or input / output device are made of a conductive material having translucency, so that the opposite side can be seen through. By making the electrodes of the display device or input / output device with a conductive material having translucency. If it is a see-through display device or input / output device, it will not obstruct the view even when the automobile 9700 is in operation. Therefore, the display device or input / output device according to one aspect of the present invention can be installed on the windshield of the automobile 9700. In addition, when a transistor or the like for driving the display device or input / output device is provided in the display device or input / output device, an organic transistor using an organic semiconductor material or a transistor using an oxide semiconductor can be used. ​​It is preferable to use a transistor having translucency, such as a transistor.

[0315] The display unit 9712 is a display device or an input / output device provided in the pillar portion. For example, by projecting the video from the imaging means provided on the vehicle body onto the display unit 9712, the view blocked by the pillar can be complemented. The display unit 9713 is a display device or an input / output device provided in the dashboard portion. For example, by projecting the video from the imaging means provided on the vehicle body onto the display unit 9713, the view blocked by the dashboard can be complemented. That is, by projecting the video from the imaging means provided outside the vehicle, the blind spot can be supplemented and the safety can be enhanced. Also, by projecting the video that complements the invisible part, a safety check can be performed more naturally without a sense of discomfort.

[0316] Also, FIG. 34(C) shows the interior of a vehicle that employs bench seats for the driver's seat and the passenger seat. The display unit 9721 is a display device or an input / output device provided in the door portion. For example, by projecting the video from the imaging means provided on the vehicle body onto the display unit 9721, the view blocked by the door can be complemented. Also, the display unit 9722 is a display device or an input / output device provided on the steering wheel. The display unit 9723 is a display device or an input / output device provided at the center of the seat surface of the bench seat. Note that a display device or an input / output device can be installed on the seat surface, the backrest portion, etc., and the display device or the input / output device can be used as a seat heater using the heat generated by the display device or the input / output device as a heat source.

[0317] .

[0317] The display unit 9714, display unit 9715, or display unit 9722 can provide navigation information, speedometers, tachometers, driving distance, fuel supply, gear state, air conditioner settings, and other various information. Also, the display items and layouts displayed on the display unit can be appropriately changed according to the user's preferences. Note that the above information can also be displayed on the display units 9710 to 9713, display unit 9721, and display unit 9723. Also, the display units 9710 to 9715 and display units 9721 to 9723 can be used as lighting devices. Also, the display units 9710 to 9715 and display units 9721 to 9723 can be used as heating devices. The display unit of one aspect of the present invention, or the display unit to which the input / output device is applied, may be flat. In this case, the display device of one aspect of the present invention, or the input / output device, may have a configuration without a curved surface or flexibility. The portable game machine shown in FIG. 34(D) has a housing 901, housing 902, display unit 903, display unit 904, microphone 905, speaker 906, operation keys 907, stylus 908, etc. The portable game machine shown in FIG. 34(D) has two display units (display unit 903 and display unit 904). Note that the number of display units included in the electronic device of one aspect of the present invention is not limited to two, and may be one or three or more. When the electronic device has a plurality of display units, at least one display unit may have the display device or input / output device of one aspect of the present invention.

[0318]

[0319]

[0320]

[0321] ​​​​​​​​​​​​​​FIG. 34(E) is a notebook personal computer, which has a housing 921, a display unit 922, a keyboard 923, a pointing device 924, etc.

[0322] The display device or the input / output device according to an aspect of the present invention can be applied to the display unit 922. Yes.

[0323] FIG. 35(A) shows the appearance of the camera 8000. The camera 8000 has a housing 8001, a display unit 8002, operation buttons 8003, a shutter button 8004, a coupling part 8005, etc. In addition, a lens 8006 can be attached to the camera 8000.

[0324] The coupling part 8005 has electrodes, and in addition to the viewfinder 8100 described later, a strobe device etc. can be connected.

[0325] Here, the camera 8000 is configured such that the lens 8006 can be removed from the housing 8001 and replaced, but the lens 8006 and the housing may be integrated. Yes.

[0326] By pressing the shutter button 8004, imaging can be performed. In addition, the display unit 8 002 has a function as a touch panel, and imaging can also be performed by touching the display unit 8002. Yes.

[0327] The display device or the input / output device according to an aspect of the present invention can be applied to the display unit 8002. Yes.

[0328] FIG. 35(B) shows an example in the case where the viewfinder 8100 is attached to the camera 8000. Yes.

[0329] The viewfinder 8100 has a housing 8101, a display unit 8102, buttons 8103, etc. .

[0330] The housing 8101 has a coupling portion that engages with the coupling portion 8005 of the camera 8000, and the viewfinder 8100 can be attached to the camera 8000. The coupling portion also has electrodes, and images and the like received from the camera 8000 via the electrodes can be displayed on the display unit 8102.

[0331] The button 8103 functions as a power button. By operating the button 8103, the display on the display unit 8102 can be switched between on and off.

[0332] The display device or input / output device according to an aspect of the present invention can be applied to the display unit 8102.

[0333] In FIGS. 35(A) and (B), the camera 8000 and the viewfinder 8100 are shown as separate electronic devices with a detachable configuration. However, a viewfinder equipped with the display device or input / output device according to an aspect of the present invention may be built into the housing 8001 of the camera 8000.

[0334] FIG. 35(C) shows the appearance of the head-mounted display 8200.

[0335] The head-mounted display 8200 has a mounting portion 8201, a lens 8202, a main body 82 03, a display unit 8204, a cable 8205, etc. The mounting portion 8201 also has a battery 8206 built therein.

[0336] The cable 8205 supplies power from the battery 8206 to the main body 8203. The main body 82 03 is equipped with a wireless receiver or the like and can display video information such as received image data on the display unit 8204. In addition, the camera provided on the main body 8203 captures the movements of the user's eyeballs and eyelids, and calculates the coordinates of the user's viewpoint based on the information, so that the user's viewpoint can be used as an input means.

[0337] Moreover, a plurality of electrodes may be provided at positions where the wearing part 8201 touches the user. The main body 8203 may have a function of recognizing the user's viewpoint by detecting the current flowing through the electrodes as the user's eyeballs move. Also, by detecting the current flowing through the electrodes, it may have a function of monitoring the user's pulse. Further, the wearing part 8201 may have various sensors such as a temperature sensor, a pressure sensor, and an acceleration sensor, and may have a function of displaying the user's biological information on the display unit 8204. Also, it may detect movements of the user's head or the like and change the video displayed on the display unit 8204 according to the movements.

[0338] The display device or the input / output device according to an aspect of the present invention can be applied to the display unit 8204.

[0339] This embodiment can be implemented in appropriate combination with at least some of the other embodiments described in this specification.

Explanation of Signs

[0340] 10 Input device 21 Straight part 22 Straight part 30 Substrate 31 Electrode 32 Electrode 33 Electrode 34 Bridge electrode 35 Dummy electrode 36 Electrode 37 Electrode 38 Intersection 40 Pixel 40a Pixel 40b Pixel 40c Pixel 41 Wiring 42 Wiring 50 FPC 50a FPC 50b FPC 51 IC 60 Display element 60B Display element 60G Display element 60R Display element 60Y Display element 70 Display panel 71 Substrate 72 Substrate 73 FPC 74 IC 80 Direction 81 Display section 82 Driving circuit 83 Wiring 86 Intersection 87 Scanning line 87a Scanning line 87b Scanning line 87c Scanning line 90 Intersection 91 Substrate 92 Adhesive layer 93 Substrate 94 Insulating layer 100 Touch panel 106 Connection part 106a Connection part 106b Connection part 109 Connection layer 109a Connection layer 109b Connection layer 111 Substrate 112 Substrate 113 Substrate 114 Substrate 130 Protection substrate 131 Polarizing plate 132 Polarizing plate 133 Backlight 151 Adhesive layer 152 Adhesive layer 153 Adhesive layer 154 Adhesive layer 155 Adhesive layer 156 Adhesive layer 157 Adhesive layer 158 Adhesive layer 161 Insulating layer 191 Substrate 192 Adhesive layer 193 Substrate 194 Insulating layer 201 Transistor 202 Transistor 203 Transistor 205 Capacitor element 206 Connection part 207 Wiring 208 Display element 209 Connection layer 211 Insulating layer 212 Insulating layer 213 Insulating layer 214 Insulating layer 215 Insulating layer 216 Spacer 217 Protective film 221 Electrode 222 EL layer 223 Electrode 224 Optical adjustment layer 231 Coloring layer 232 Light-shielding layer 233 Insulating layer 234 Insulating layer 241 Conductive layer 242 Semiconductor layer 243 Conductive layer 244 Conductive layer 251 Electrode 252 Electrode 253 Liquid crystal 254 Insulating layer 255 Overcoat 601 Pulse voltage output circuit 602 Current detection circuit 603 Capacity 611 Transistor 612 Transistor 613 Transistor 621 Electrode 622 Electrode 901 Housing 902 Housing 903 Display Unit 904 Display Unit 905 Microphone 906 Speaker 907 Operation Key 908 Stylus 921 Housing 922 Display Unit 923 Keyboard 924 Pointing Device 3501 Wiring 3502 Wiring 3503 Transistor 3504 Liquid Crystal Element 3510 Wiring 3510_1 Wiring 3510_2 Wiring 3511 Wiring 3515_1 Block 3515_2 Block 3516 Block 7000 Display Unit 7001 Display Unit 7100 Mobile Phone 7101 Housing 7103 Operation Button 7104 External Connection Port 7105 Speaker 7106 Mic 7200 Television Set 7201 Housing 7203 Stand 7211 Remote Control Operating Unit 7300 Portable Information Terminal 7301 Housing 7302 Operation Button 7303 Information 7304 Information 7305 Information 7306 Information 7310 Portable Information Terminal 7320 Portable Information Terminal 7400 Lighting Device 7401 Base 7402 Light Emitting Unit 7403 Operation Switch 7410 Lighting Device 7412 Light Emitting Unit 7420 Lighting Device 7422 Light Emitting Unit 7500 Portable Information Terminal 7501 Housing 7502 Member 7503 Operation Button 7600 Portable Information Terminal 7601 Housing 7602 Hinge 7650 Portable Information Terminal 7651 Non-display Part 7700 Portable Information Terminal 7701 Housing 7703a Button 7703b Button 7704a Speaker 7704b Speaker 7705 External Connection Port 7706 Microphone 7709 Battery 7800 Portable Information Terminal 7801 Band 7802 Input / output Terminal 7803 Operation Button 7804 Icon 7805 Battery 8000 Camera 8001 Housing 8002 Display Part 8003 Operation Button 8004 Shutter Button 8005 Coupling Part 8006 Lens 8100 Finder 8101 Housing 8102 Display unit 8103 Button 8200 Head-mounted display 8201 Mounting part 8202 Lens 8203 Main body 8204 Display unit 8205 Cable 8206 Battery 9700 Automobile 9701 Vehicle body 9702 Wheel 9703 Dashboard 9704 Light 9710 Display unit 9711 Display unit 9712 Display unit 9713 Display unit 9714 Display unit 9715 Display unit 9721 Display unit 9722 Display unit 9723 Display unit

Claims

A display device having a display unit including a plurality of scanning lines and a plurality of EL elements, and a touch sensor located on the display unit, comprising: having a conductive layer that functions as an electrode of the touch sensor; the conductive layer has a plurality of openings having a rounded polygonal shape in plan view; in plan view, at least one of the openings has an overlap with one light-emitting region of the plurality of EL elements and has no overlap with other light-emitting regions; each of the plurality of scanning lines has a region extending along a direction intersecting the longitudinal direction of the display unit; in plan view, the conductive layer has a region where an angle formed by a stretching direction of one side of the polygonal shape and a stretching direction of one of the plurality of scanning lines is 30 degrees or more and 60 degrees or less; the conductive layer has no overlap with the light-emitting regions of the plurality of EL elements; in plan view, the display unit has a region where one of the EL elements and another one of the EL elements adjacent to the one in the longitudinal direction exhibit the same color. A display device. A display device having a display unit including a plurality of scanning lines and a plurality of EL elements, and a touch sensor located on the display unit, comprising: having a conductive layer that functions as an electrode of the touch sensor; the conductive layer has a plurality of openings having a rounded polygonal shape in plan view; in plan view, at least one of the openings has an overlap with one light-emitting region of the plurality of EL elements and has no overlap with other light-emitting regions; each of the plurality of scanning lines has a region extending along a direction intersecting the longitudinal direction of the display unit; in plan view, the conductive layer has a region where an angle formed by a stretching direction of one side of the polygonal shape and a stretching direction of one of the plurality of scanning lines is 30 degrees or more and 60 degrees or less; the conductive layer has no overlap with the light-emitting regions of the plurality of EL elements; in plan view, the display unit has a region where one of the EL elements and another one of the EL elements adjacent to the one in the longitudinal direction exhibit the same color; the display unit has a plurality of pixels; at least one of the pixels has a transistor having an oxide semiconductor in a channel formation region; any one of the plurality of scanning lines is electrically connected to a gate of the transistor. A display device.

Images