Display device

Abstract

To provide a touch panel which can improve its detection accuracy or provide a touch panel which can improve its detection sensitivity.SOLUTION: A touch panel comprises a first conductive layer, a second conductive layer, a plurality of display elements, and a scan line. The first conductive layer comprises, in a part of a contour in a plan view, a first portion that is a straight portion parallel to a first direction. The second conductive layer comprises, in a part of the contour in the plan view, a second portion that is a straight portion parallel to the first direction. The first portion and the second portion are provided to face each other. The display element is provided at a position not to overlap with the first conductive layer and the second conductive layer. The scan line has a portion extending in a second direction. An angle formed by the first direction and the second direction is not less than 30 degrees and not more than 60 degrees.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] 1. Field of the Invention The present invention relates to an input device. 2. Field of the Invention The present invention relates to a display device. One embodiment of the present invention relates to an input / output device, and particularly to a touch panel.

[0002] Note that one embodiment of the present invention is not limited to the above technical field. Examples of the semiconductor device include a semiconductor device, a display device, a light-emitting device, a power storage device, a memory device, an electronic device, and a lighting device. , an input device, an input / output device, a driving method thereof, or a manufacturing method thereof. It can be done.

[0003] In this specification and the like, a semiconductor device is a device that can function by utilizing semiconductor characteristics. Refers to devices in general, including semiconductor elements such as transistors, semiconductor circuits, arithmetic units, and memory The device is one embodiment of a semiconductor device. power devices, input / output devices, electro-optical devices, power generation devices (including thin-film solar cells, organic thin-film solar cells, etc.) BACKGROUND ART Some electronic devices and devices include semiconductor devices. [Background technology]

[0004] In recent years, display devices equipped with touch sensors as position input means have come into practical use. A display device equipped with a touch sensor is called a touch panel or touch screen. (Hereinafter, this will be simply referred to as a "touch panel"). For example, Examples of mobile information terminals include smartphones and tablet terminals.

[0005] Representative display devices include liquid crystal display devices and organic EL (Electro Luminescence) display devices. minescence elements and light-emitting diodes (LEDs) a light-emitting device equipped with a light-emitting element such as a diode, an electronic device that displays by an electrophoresis method, etc. Examples include paper.

[0006] For example, the basic structure of an organic EL element is a layer containing a light-emitting organic compound between a pair of electrodes. By applying a voltage to this element, light is emitted from the light-emitting organic compound. A display device using such an organic EL element is called a liquid crystal display device. Since it does not require a backlight, which was previously required in some devices, it is thin, lightweight, has high contrast, and consumes less power. For example, an example of a display device using an organic EL element is This is described in reference 1.

[0007] The touch panel may be, for example, a pressure-sensitive sensor array that is superimposed on the display panel. Alternatively, a capacitive sensor array is provided, and a fingertip or an input pen is attached to the substrate of the sensor array. The touch position is detected by touching it with a stylus.

[0008] Patent Document 2 discloses a method for installing a touch sensor on the display screen of an electroluminescence display device. The configuration of the touch panel is disclosed. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-324673 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-172444 Summary of the Invention [Problem to be solved by the invention]

[0010] Acquire more precise position information of the object touching the touch sensor or touch panel Therefore, there is a demand for touch sensors with high sensitivity.

[0011] One aspect of the present invention provides an input device or an input / output device that can improve detection accuracy. Alternatively, an input device or an input device capable of increasing detection sensitivity is provided. One of the objectives is to provide an output device. Alternatively, a novel input device or input / output device. One of our goals is to provide the following.

[0012] The description of these problems does not preclude the existence of other problems. It is not necessary for one embodiment to solve all of these problems. The subject matter can be extracted from the description, drawings, claims, etc. [Means for solving the problem]

[0013] One embodiment of the present invention is a liquid crystal display (LCD) including a first conductive layer, a second conductive layer, a plurality of display elements, and a scan line. The first conductive layer has a first direction at a part of its outline in a plan view. The second conductive layer has a first portion that is a straight line portion parallel to the direction of the first conductive layer. The first portion and the second portion are linear portions parallel to the first direction. The display element overlaps the first conductive layer and the second conductive layer. The scanning lines are provided at positions where they do not overlap with each other. The scanning lines also have portions that extend in the second direction. The angle between the first direction and the second direction is between 30 degrees and 60 degrees. .

[0014] In the above, the first conductive layer and the second conductive layer are arranged in a first direction and perpendicular to the first direction. The display elements are arranged in a grid pattern that intersects with each other in the crossing direction. It is preferable that the two electrodes are arranged on top of each other.

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

[0016] In the above, the semiconductor device has a first substrate and a second substrate, and a first conductive layer, a second conductive layer, and a The conductive layer, the display elements, and the scan lines are preferably located between the first substrate and the second substrate. In this case, a light-shielding layer having a function of blocking visible light is provided on the first substrate. The elements and the scanning lines are provided on the second substrate, and a first conductive layer, a second conductive layer, and a light-shielding layer are provided on the second substrate. The light-shielding layer is provided between the first conductive layer and the second substrate, and between the second conductive layer and the second substrate. It is preferably located between the plates.

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

[0018] In the above, the distance between the first portion and the second portion is 1 μm or more and 10 mm or less. It is preferable that

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

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

[0021] According to one aspect of the present invention, there is provided an input device or an input / output device capable of improving detection accuracy. Alternatively, an input device or an input / output device that can increase the detection sensitivity can be provided. Alternatively, a new input device or input / output device can be provided.

[0022] The description of these effects does not preclude the existence of other effects. An embodiment does not necessarily have to have all of these effects. can be extracted from descriptions in the specification, drawings, claims, etc. [Brief explanation of the drawings]

[0023] [Figure 1] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 2] 1 shows a configuration example of an input device according to an embodiment. [Figure 3] 1 shows a configuration example of an input device according to an embodiment. [Figure 4] 1 shows a configuration example of an input device according to an embodiment. [Figure 5] 1 shows a configuration example of an input device according to an embodiment. [Figure 6] 1 shows a configuration example of an input device according to an embodiment. [Figure 7] 1 shows a configuration example of an input device according to an embodiment. [Figure 8] 1 shows a configuration example of an input device according to an embodiment. [Figure 9] 1 shows a configuration example of an input device according to an embodiment. [Figure 10] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 11] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 12] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 13] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 14] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 15] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 16] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 17] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 18] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 19] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 20] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 21] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 22] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 23] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 24] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 25] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 26] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 27] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 28] 1A and 1B are a block diagram and a timing chart of a touch sensor according to an embodiment. [Figure 29] FIG. 2 is a circuit diagram of a touch sensor according to an embodiment. [Figure 30] 1A to 1C are diagrams illustrating a pixel including a touch sensor according to an embodiment. [Figure 31] 1A to 1C are diagrams illustrating operations of a touch sensor and a pixel according to an embodiment. [Figure 32] 1A to 1C are diagrams illustrating examples of electronic devices and lighting devices according to an embodiment. [Figure 33]1A to 1C are diagrams illustrating examples of electronic devices according to an embodiment. [Figure 34] 1A to 1C are diagrams illustrating examples of electronic devices according to an embodiment. [Figure 35] 1A to 1C are diagrams illustrating examples of electronic devices according to an embodiment. DETAILED DESCRIPTION OF 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. The present invention is not limited to the above embodiments, and various changes and modifications may be made in form and detail without departing from the spirit and scope of the present invention. Therefore, the present invention is based on the following embodiments. The present disclosure should not be construed as being limited to the contents of the preceding paragraph.

[0025] In the configuration of the invention described below, the same parts or parts having similar functions are The same reference numerals are used in common between different drawings, and repeated explanations thereof will be omitted. When referring to a function, the hatch pattern may be the same and no particular symbol may be assigned.

[0026] In each figure described in this specification, the size, layer thickness, or area of ​​each component is The figures may be exaggerated for clarity and are not necessarily limited to that scale. stomach.

[0027] In this specification, ordinal numbers such as "first" and "second" are used to avoid confusion of components. The number is not a numerical limitation.

[0028] A transistor is a type of semiconductor device that controls the amplification of current and voltage, and conduction or non-conduction. In this specification, the transistor can be , IGFET(Insulated Gate Field Effect Trans istor) and thin film transistor (TFT) ) is included.

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

[0030] In the following, a capacitive touch sensor is applied as a touch sensor according to one embodiment of the present invention. This section explains what happens when:

[0031] In this specification, the touch panel has a function of displaying (outputting) images on a display surface. Touch sensors detect when a finger, stylus, or other object touches or approaches the display surface. Therefore, the touch panel is one type of input / output device. do.

[0032] In this specification, the substrate of the touch panel may be, for example, an FPC (Flexible Printed Circuit). Print Circuit) or TCP (Tape Carrier Packaging e) or COG (Chip On Ground) connectors are attached to the board. The IC (integrated circuit) mounted by the TECHNICAL LASS method is called a touch panel module. It may also be simply called a touch panel.

[0033] A capacitive touch sensor applicable to one aspect of the present invention includes a pair of conductive layers. A capacitance is formed between the pair of conductive layers. When the object to be detected touches or is close to the pair of conductive layers, The capacitance between the pair of conductive layers changes when they come into contact with each other, and this is used for detection. It is possible.

[0034] The capacitance type includes the surface capacitance type and the projected capacitance type. The capacitance method includes the self-capacitance method and the mutual capacitance method. This is preferable because it enables simultaneous multi-point detection.

[0035] The pair of conductive layers has a linear portion in a part of its outline in a plan view. are arranged facing each other so that their straight line portions are parallel to each other. This makes it possible to increase the capacitance formed between the two conductive layers. When a potential difference is applied between two conductive layers facing each other in parallel, The electric field lines that occur when the object is exposed to light are uniformly distributed, so the detection sensitivity varies depending on the location. Therefore, a touch sensor with improved detection accuracy can be realized. .

[0036] The touch panel of one embodiment of the present invention includes a touch sensor and a display panel (display The touch sensor is provided on the display surface side of the display panel.

[0037] In addition, a display element of the display panel and a pair of conductive layers constituting the touch sensor are overlapped with each other. It is preferable to install the touch panel so that it does not cause any glare. This prevents the display from losing its brightness, realizing a touch panel with improved visibility. The force can be reduced.

[0038] The direction of the straight line portions of the pair of conductive layers is the horizontal direction or It is preferable that the display panel is tilted at an angle of about 45 degrees relative to the vertical direction. The angle formed by the extension direction of the scan line (also called gate line) and the direction of the straight part of the conductive layer is 4 It is preferable that the angle is between 0 degrees and 50 degrees.

[0039] Furthermore, when the pair of conductive layers has a lattice (also called mesh) shape, the conductivity of the conductive layers In addition, when the pair of conductive layers has a lattice shape, the thickness of the conductive layer can be improved. The extension direction of the lattice is divided into a part extending in a direction parallel to the straight line portion and a part extending in a direction parallel to the straight line portion. It is preferable that the film has a portion extending in a direction intersecting the direction of the film.

[0040] Furthermore, when the pair of conductive layers has a lattice shape, the openings of the lattice and the display element are arranged in a plan view. In this case, it is preferable that the display element is arranged so as to overlap with each other in a plan view. If the outline is a polygon having sides parallel to the extension direction of the grating, the aperture ratio can be increased. Alternatively, the outline of the display element in plan view is preferably in the direction of extension of the linear portions of the conductive layer. It is preferable that the polygon has two sides parallel to the line, or a closed curve having a straight line portion in part. stomach.

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

[0042] [Configuration example] Below, a configuration example of a touch panel will be described as an example of an input / output device of one embodiment of the present invention. The description will be made with reference to the drawings.

[0043] [Touch panel configuration example] FIG. 1(A) is a perspective schematic diagram of a touch panel 100 according to one embodiment of the present invention. (B) is a perspective schematic view of FIG. 1(A) in which the typical components are shown for clarity. In addition, in FIG. 1(B), some of the components (substrate 30, substrate 72, etc.) are shown. Only the outline is indicated by a dashed line.

[0044] The touch panel 100 includes an input device 10 and a display panel 70, which are stacked on top of each other. It is being used.

[0045] The input device 10 has a substrate 30. The substrate 30 has an electrode 31, an electrode 32, and a plurality of wirings. The substrate 30 is provided with a plurality of wirings 41 and a plurality of wirings 42. An FPC 50 is attached to electrically connect to each of the wirings 42. This shows an example in which an IC 51 is provided on an FPC 50.

[0046] As the input device 10, for example, a capacitance type touch sensor can be applied. A case where a projected capacitive touch sensor is applied will be described.

[0047] However, the present invention is not limited to this, and may be applied to detecting the proximity or contact of a detection object such as a finger or a stylus. Various sensors capable of detecting a target object may be applied to the input device 10.

[0048] The 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 disposed opposite each other. On the top of the substrate 71, a display unit 81, a driving circuit 82, wiring 83, etc. are provided. An FPC 73 is provided which is electrically connected to the wiring 83. The example above shows IC74 installed.

[0050] The display unit 81 is an area where an image is displayed, and has a plurality of pixels. 1 shows an enlarged schematic view of a part of the display unit 81. A pixel includes at least one display element 60. Preferably, the pixel includes a transistor and a display element 60. The element 60 is typically a light-emitting element such as an organic EL element, a liquid crystal element, or the like. This can be done.

[0051] The driving circuit 82 is a circuit for driving the pixels of the display unit 81, such as a scanning line driving circuit and a signal line driving circuit. In this example, a scanning line driving circuit is used as the driving circuit 82. The case where this is applied will be explained.

[0052] The wiring 83 has a function of transmitting signals and power to the display unit 81 and the drive circuit 82. 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 scanning lines (also called gate lines) 8 electrically connected to a driving circuit 82. 7. The scanning line 87 is electrically connected to the gate of one transistor included in the pixel. The driving circuit 82 selects a plurality of pixels to be electrically connected to one scanning line 87. A signal can be applied to each scan line 87 sequentially.

[0054] In FIG. 1B, the direction in which the scanning line 87 extends is indicated by an arrow as a direction 80. In the configuration shown in FIG. 1B, the side (outline) of the display unit 81 on which the drive circuit 82 is provided 8 shows a case where a direction perpendicular to the display 81 is parallel to the direction 80. When the display area 81 is not rectangular or square, the outline of the display area 81 and the direction 80 are not perpendicular to each other. The scanning lines 87 do not necessarily have to be linear, and may be different depending on the pixel configuration. The scanning line 87 may have a partially curved or bent shape. The direction of the line connecting the scanning lines 87 and the display area 81 corresponds to the direction 80. When the image is cut out into a part, the direction of the line connecting the two end points corresponds to direction 80. The direction 80 is parallel to the array direction of the pixels (or sub-pixels) electrically connected to one scanning line 87. It can also be called direction.

[0055] In Figure 1(A)(B), a chip is mounted on an FPC73 using the COF (Chip On Film) method. The IC 74 is, for example, a scanning line driver. An IC that functions as a circuit, a signal line driver circuit, etc. can be applied. In some cases, the circuit functions as a scanning line driver circuit and a signal line driver circuit. A circuit that functions as a signal line driver circuit is provided externally, and is connected to the display panel 7 via an FPC 73. When inputting a signal to drive 0, IC74 may not be provided. In addition, IC74 is directly mounted on the board 71 by COG (Chip On Glass) method or the like. It may be implemented in contact.

[0056] [Example of input device configuration] 2A shows a schematic top view of the input device 10. The input device 10 has a plurality of electrodes on a substrate 30. The substrate 30 includes the electrode 31, a plurality of electrodes 32, a plurality of wirings 41, and a plurality of wirings 42. An FPC 50 is provided on the back surface of the substrate 10, electrically connecting to each of the plurality of wirings 41 and the plurality of wirings 42. Figure 2(A) shows an example in which IC51 is mounted on FPC50. For ease of distinction, the outline of electrode 32 is shown in solid lines, and the outline of electrode 31 is shown in broken lines. Each is indicated by a line.

[0057] In FIG. 2(A), the electrode 31 is arranged so as to extend in the horizontal direction. The electrodes 31 are arranged so as to extend in a direction intersecting the electrodes 31. The pole 31 and the electrode 32 are preferably arranged in a direction perpendicular to each other.

[0058] Each of the plurality of wirings 41 is electrically connected to one of the electrodes 31. 42 are each electrically connected to one of the electrodes 32.

[0059] The IC 51 has a circuit for driving the input device 10. The IC 51 includes, for example, a mutual capacitance. It has circuits that realize driving methods such as capacitance and self-capacitance.

[0060] FIG. 2B shows an enlarged view of the region P in FIG. 2A. The electrodes 31 and 32 intersect. At the intersection 90, the electrodes 31 and 32 overlap and intersect with each other. An insulator is sandwiched between them to prevent electrical short circuits. .

[0061] In FIG. 2(B), the electrode 32 is locally shaped like the electrode 31 rotated by 90 degrees. This shows the case where the shape is

[0062] The outline of the electrodes 31 and 32 in plan view is such that a plurality of diamond-shaped patterns are arranged horizontally or vertically. The shape is vertically connected and integrated. If one diamond pattern is a square, the diamond patterns arranged in the horizontal direction of the drawing of the electrode 31 The pitch of the electrodes 32 arranged in the vertical direction of the paper can be made equal to the pitch of the electrodes 32 arranged in the vertical direction of the paper. This is preferable. In the detection area of ​​the input device 10, the detection points are arranged in a matrix at equal intervals. The sensors can be arranged in a box-like pattern, which can improve detection accuracy.

[0063] The electrode 31 has a straight portion 21 in part of its contour. The electrode 32 has a straight portion 21 in part of its contour. The electrode 31 and the electrode 32 have a straight portion 22 at the part. By adopting such a configuration, the electrodes 31 and 3 2 is constant, and the length over which these two electrodes face each other can be increased. Therefore, it is possible to increase the capacitance formed between the two electrodes. Also, when a potential difference is applied between the two electrodes in the area where they face each other, The electric field lines generated in the sample have a uniform density distribution, so the detection sensitivity varies depending on the location. Therefore, a touch sensor with improved detection accuracy can be realized.

[0064] As shown in FIG. 3, the substrate 30 has a structure in which only one of the electrodes 31 and 32 is disposed. In this case, 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 the electrode 32. 3 shows a configuration in which the electrode 31 is disposed on the substrate 30, but it is also possible to use a configuration in which the electrode 32 is disposed on the substrate 30. It may also be configured as being arranged.

[0065] FIG. 2B shows a direction 80, which is the extension direction of the scanning line 87 shown in FIG. 1B. When the straight line portion 21 and the straight line portion 22 are parallel to each other, the direction 80 and the straight line portion 21 form a The angle between the direction 80 and the straight line portion 22 is equal to the angle between the direction 80 and the straight line portion 22. The angle between the part 21 or the straight part 22 is expressed as angle θ. The angle θ is 30 degrees or more. 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, Typically, it is preferably 45 degrees.

[0066] The distance between the electrodes 31 and 32 is defined as D. The smaller the distance D, the smaller the distance between the two electrodes. The capacitance can be increased, and the detection sensitivity can be improved. For example, it is greater than 0 and less than 10 mm, preferably greater than 1 μm and less than 5 mm, and more preferably Alternatively, the thickness may be 3 μm or more and 1 mm or less, and more preferably 5 μm or more and 500 μm or less. Alternatively, the pitch or display area of ​​the pixels or sub-pixels of the display unit 81 may be It is preferable that the pitch be an integer multiple of the pitch when the display elements 60 are arranged.

[0067] FIG. 2B shows an example in which the electrodes 31 and 32 each have a lattice shape. The spacing between the lattices of the electrodes 31 and 32 is an integer multiple of the spacing between the electrodes 31 and 32. It is preferable to set the distance equal to the distance D. Also, as shown in FIG. When the grids of the electrodes 1 and 32 are orthogonal to each other, one of the two straight line segments forming the grid is It is preferable that the direction of the straight line portion 21 or the straight line portion 22 is parallel to this. At this time, the shape of the openings of the electrodes 31 and 32 is inclined at an angle θ with respect to the direction 80. The shape becomes a square.

[0068] Although FIG. 2(B) shows a case where the openings of the lattice have a square shape, the shape is not limited to this. The shape can be various, such as a circle, an oval, or a polygon with rounded corners.

[0069] The electrodes 31 and 32 are preferably thin enough to be invisible to the user. As shown in FIG. 2(B), the electrodes 31 and 32 are preferably processed into a lattice (mesh) shape. By doing so, high conductivity and high visibility of the display device can be obtained. The width of the narrowest part of 2 is 30 nm or more and 100 μm or less, preferably 50 nm or more and 50 μm or less. It is more preferable that the thickness is 50 nm or more and 20 μm or less. A conductive film having a pattern width of 1 m or less is not preferable because it is extremely difficult for the user to visually recognize it. I wish.

[0070] Alternatively, the electrodes 31 and 32 may be made of conductive nanowires. By distributing the fibers at an appropriate density so that they come into contact with each other, a two-dimensional network is formed. The film can function as a highly transparent conductive film. The value is 1 nm or more and 100 nm or less, preferably 5 nm or more and 50 nm or less, more preferably 5 Nanowires with a diameter of 25 nm or more can be used. Metal nanowires such as Cu nanowires and Al nanowires, or carbon nanowires For example, Ag nanowires have an optical transmittance of 89%. As a result, a sheet resistance value of 40 Ω / □ or more and 100 Ω / □ or less can be achieved.

[0071] As shown in FIG. 4A, the electrode 32 is composed of a plurality of electrodes 33 and a bridge electrode 34. Here, in order to make it easier to see the relative positions and shapes of the electrodes 33 and the bridge electrodes 34, Therefore, only the bridge electrode 34 is shown by a broken line in FIG. 4(B), and the bridge electrode 34 is shown by a broken line in FIG. Only the electrode 34 is shown by a solid line. The up-down relationship is not particularly limited, and either one may be arranged on the substrate 30 side.

[0072] The island-shaped electrodes 33 are arranged in a line in the vertical direction, and two adjacent electrodes are connected by a bridge electrode 34. The electrode 33 is electrically connected to the electrode 33. 31 can be formed at the same time by processing the same conductive film. It is possible to suppress variations in film thickness and line width, and the resistance value of each electrode varies depending on the location. In addition, by adopting such a configuration, the electrode 33 and the electrode 31 can be placed on the same plane. Therefore, the electrodes 31 and 33 can be positioned at the same height. Since no electric field is generated between them, the distribution of the electric field lines generated between them can be made uniform, and the input The detection sensitivity of the device 10 can be improved.

[0073] In this example, the electrode 32 has a bridge electrode 34, but the electrode 31 may have such a structure. In this case, the influence of contact resistance can be reduced by providing a bridge electrode 34. If this is significant, a structure in which a bridge electrode 34 is provided on the shorter of the electrodes 31 and 32 may be used. This structure is preferable because it can reduce the number of bridge electrodes 34 that one electrode has. I wish.

[0074] FIG. 5A shows an enlarged view of the area Q in FIG. 2A. The area Q is the detection area of ​​the input device 10. It is a region that includes the corners of the known region.

[0075] As shown in FIG. 5A, the electrodes 31 and 32 are parallel to the direction 80 at the corners of the detection area. It is preferable that the electrode 31 and the electrode 32 are cut out in the vertical direction. The contour of the electrode 32 is preferably configured to have a straight portion parallel to or perpendicular to the direction 80. By adopting such a configuration, the input device 10 and the display panel 70 can be combined. The frame of the touch panel 100 can be narrowed.

[0076] FIG. 5(B) shows an example in which the distance D is wider than that in FIG. 5(A). In addition, when the distance between the electrodes 31 and 32 is increased, the lattice shape can be applied to the intersection 90 as well. FIG. 5B shows a case where the electrode 32 has a lattice-shaped bridge electrode 34. As shown in FIG. 2(B), when the bridge electrode 34 is not used, The poles 31 and the electrodes 32 may be configured to have a lattice shape at the intersections 90.

[0077] In the above, the electrodes 31 and 32 have a lattice shape. However, it is not limited to this, and various other shapes may be used as long as the electrodes 31 and 32 have a linear portion facing each other. can be taken.

[0078] As shown in FIGS. 6(A) and 6(B), the electrodes 31 and 32 are electrically insulated from each other. The dummy electrode 35 may be arranged between the electrode 31 and the electrode 32. This configuration prevents areas where the electrodes 31 and 32 are not present from being visible. can.

[0079] In FIG. 7A, the inside of the diamond-shaped electrode pattern of the electrodes 31 and 33 shown in FIG. 4A is In addition, in Fig. 7(B), The electrode 31 and the electrode 33 are shown as being left only on one straight line portion of the grating. 7(C) shows a case where the electrodes 31 and 33 have zigzag patterns on the inside. In this case, the straight line portions of the zigzag pattern are formed by the electrodes 31 or It is preferable to form the electrode 33 so as to be parallel to the straight line portion of the contour of the electrode 33. As shown in 7(C), the zigzag pattern is formed by extending the electrode 31 or the electrode 32. It is preferable to arrange the electrodes along the direction, since the electrical resistance in this direction can be reduced.

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

[0081] In FIG. 2(A) and other figures, the top surfaces of the electrodes 31 and 32 are configured as a plurality of diamonds connected in one direction. However, the shapes of the electrodes 31 and 32 are not limited to this. Various top shapes are possible, such as strip (rectangular), curved strip, zigzag, etc. In the above example, the electrodes 31 and 32 are shown to be arranged so as to intersect at right angles. However, they do not necessarily need to be arranged perpendicular to each other. The angle between the two electrodes is 90°. It may be less than 0 degrees.

[0082] In FIG. 8A, electrodes 36 and 37 having zigzag upper surfaces are used. For clarity, in FIG. 8(A) and other figures, the electrode 36 is shown by a broken line, and the electrode 37 is shown by a broken line. In this case, as shown in FIG. 8(A), the center positions of the respective straight line portions are It is preferable that the electrodes 36 and 37 are not overlapped but are arranged so as to be offset relative to each other. The parallel opposing portions of the electrodes 37 can be brought closer to each other, increasing the capacitance between the electrodes and improving the detection efficiency. This is preferable because it improves the sensitivity. Alternatively, as shown in FIG. 8(B), 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 area enclosed by 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 Figs. 9(A) and 9(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 serpentine 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 included in 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. When the display panel 70 displays a full-color image, In this case, for example, display elements 60 of three colors, red (R), green (G), and blue (B), are provided in one pixel. It is preferable that one pixel has a configuration in which the above three colors are combined. When the display device has a white (W) display element 60, power consumption can be reduced. Here, a configuration having one display element 60 and a corresponding pixel circuit is called a sub- When a pixel has three display elements 60, the pixel has three sub-pixels. The configuration may include:

[0087] Furthermore, when the input device 10 is placed on the display panel 70, the power supply of the input device 10 is It is preferable that the electrodes 31 and 32 are arranged so as to be located between the display elements 60. This prevents the light from the display element 60 from being blocked by the electrodes 31 and 32. Therefore, the decrease in brightness of the display panel 70 when the input device 10 is provided is substantially eliminated. Therefore, visibility is high and power consumption is reduced. In addition, the electrodes 31 and 32 do not overlap with the display element 60. Therefore, it is not necessary to use a relatively high-resistance, light-transmitting, conductive material for the electrodes 31 and 32 . Therefore, it is possible to use low-resistance metal or alloy materials for the electrodes 31 and 32. It is possible to form the electrodes 1 and 32 so thin that they are not visible to the naked eye. Therefore, it is possible to prevent the electrodes 31 and 32 from being visible due to light reflection or the like. This allows for a touch panel with higher visibility.

[0088] FIG. 10 shows the display unit 81 of the touch panel 100 shown in FIG. 1(A) when viewed from the display surface side. 1 and 2 show enlarged views of the input device 10 placed on top of the display panel 70. The pixel 40 is divided into four display elements 60 (display element 60R, display element 60G) that exhibit different colors. , display element 60B, and display element 60Y). When explaining matters common to the four types of display elements, they will be referred to as display element 60. .

[0089] 10 shows the positional relationship between the electrode 31 and each display element 60. 1 is shown, the same applies to the electrode 32 (or electrode 33 and bridge electrode 34). 10 also shows the direction of the scanning lines 87 of the display panel 70. Three scan lines (scan line 87a, scan line 87b, and scan line 87c) are shown by dashed lines. The direction 80, which is the direction in which the scan lines extend, is also shown.

[0090] In the configuration shown in FIG. 10, the angle formed by the straight line portion of the grid of the electrode 31 and the scanning line 87 is 4. The display elements 60 are arranged along the straight line portions of the electrodes 31. Here, the plurality of display elements 60 arranged diagonally in FIG. Two types of display elements 60 corresponding to different colors are arranged alternately. Four 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 color, and the display element 60B is a display element that exhibits blue color. and the display element 60Y is a display element that exhibits yellow.

[0091] Each display element 60 has a portion whose outline is parallel to the straight line portion of the grid of the electrode 31. By adopting such a shape, it is possible to arrange the display elements 60 in a desired shape. The gap between the two display elements 60 can be reduced, and the aperture ratio can be increased. The outline of the display element 60 is a quadrangle with rounded corners, but is not limited to this and may be a square, a rectangle, or the like. The shape may be a circle, polygon, oval, circle, or polygon with rounded corners.

[0092] The scanning line 87a shown in FIG. 10 is a scanning line that drives the sub-pixel including the display element 60R, for example. The scanning line 87b corresponds to the sub-pixel including the display element 60G and the sub-pixel including the display element 60Y. Scan line 87c corresponds to the scanning line that drives the sub-pixel including display element 60B. Each scan line corresponds to the gate of a transistor included in each sub-pixel. In other words, in the configuration shown in FIG. 10, one pixel has three scanning It can be driven by a scan line 87.

[0093] In FIG. 10, one pixel 40 (i.e., four display pixels) is provided in one of the openings of the electrode 31. However, the present invention is not limited to this, and the electrode 31 may be connected to the adjacent display element 6 It can take various forms, engineered to be placed between 0 and 1.

[0094] In FIG. 11(A), one display element 60 is included in the opening of the grid of the electrode 31. In FIG. 11(B), the electrodes 31 are arranged in a stripe pattern. In FIG. 11(C), one of the grids of the electrode 31 is In this example, a plurality of pixels 40 are arranged in the opening. 1 shows a case where the pitch of the lattice in the electrode 31 is different in two directions perpendicular to each other. In addition, in Fig. 11(E) and Fig. 11(F), as shown in Fig. 7(C), 31 has a zigzag shape.

[0095] 10 and 11 show an example in which one pixel 40 is provided with four color display elements 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, the pixels 40a, 40b, and 40c are shown separately. The three display elements included in each of the pixel 40a, pixel 40b, and pixel 40c are shown separately. The child 60 has the same hatching pattern.

[0097] In FIG. 12, the vertically arranged pixels 40a and 40b are three pixels included therein. 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 upside down in each case.

[0098] In addition, in FIG. 12, 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 display elements 60 of three colors. The display element 60 has a contour that has straight portions along the direction of the lattice of the electrodes 31, and a corner portion that has straight portions along the direction of the lattice of the electrodes 31. 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 electrodes 31 having a different shape from that shown in FIG. 13(A).

[0100] 10 to 13, for ease of explanation, only some of the display elements 60 are shown. Although the symbols R, G, B, Y, etc. are given, this arrangement is only an example. The arrangement of 0 is not limited. R, G, B, and Y are interchangeable. Instead of any one of R, G, B, and Y, W corresponding to a white display element may be disposed.

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

[0102] [Cross-section example] An example of the cross-sectional configuration of the touch panel 100 will be described below 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, An area including the FPC 73, an area including the drive circuit 82, an area including the display unit 81, and an FPC 5 Each cross section of the region including 0 is shown.

[0104] The substrate 71 and the substrate 72 are bonded together by an adhesive layer 151. The substrate 71 and the substrate 30 are bonded together by an adhesive layer 152. The structure including the substrate 2 and the components sandwiched therebetween corresponds to the display panel 70. The configuration including the board 30 and the components provided on the board 30 corresponds to the input device 10.

[0105] <Display panel 70> Between the substrate 71 and the substrate 72, a transistor 201, a transistor 202, a transistor The display element 60 includes a capacitor 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, an insulating layer The insulating layer 211 is provided with a portion of each transistor. The other part functions as a dielectric of the capacitor 205. The insulating layer 212, the insulating layer 213, and the insulating layer 214 are insulating layers for the transistors and the capacitors. The insulating layer 214 is provided to cover the electrode 205 and the like. The insulating layer 214 functions as a planarizing layer. Here, insulating layers 212, 213, and 214 are used as insulating layers covering the transistors and the like. Although the present invention shows a case where 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, which functions as a planarizing layer, is not necessary. If so, it need not be provided.

[0107] The display element 60 is provided on the insulating layer 214. This shows an example of applying a surface emission type (top emission type) light emitting element (organic EL element). The display element 60 emits light toward the second electrode 223. The transistor 202, the transistor 203, the capacitor 205, the wiring, and the like are arranged over the region. By arranging the display unit 81 in this manner, 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. There are.

[0109] FIG. 14 shows a cross section of one pixel as an example of the display unit 81. In this example, the pixel is A current control transistor 202, a switching control transistor 203, and a capacitance element 205 and one of the source and drain of the transistor 202. The other electrode of the capacitor 205 is connected to the insulating layer 212, the insulating layer 213, and the insulating layer 214. The first electrode 221 is electrically connected to the first electrode 221 through an opening provided in the first electrode 221 .

[0110] 14, a transistor 201 is provided as an example of the driving circuit 82. This shows:

[0111] The transistor 201, the transistor 202, and the transistor 203 are gate A conductive layer 241 functions as a gate electrode, a semiconductor layer 242 functions as a source electrode, and The other of the pair of conductive layers 243 functions as a drain electrode and the other of the pair of conductive layers 244 functions as a gate insulating layer. and an insulating layer 211.

[0112] In FIG. 14, transistors 201 and 202 are semiconductor devices in which channels are formed. A structure in which the conductive layer is sandwiched between two gate electrodes (conductive layer 241 and conductive layer 244) is applied. This example shows a transistor with a higher field-effect mobility than other transistors. This allows for an increase in on-current, resulting in high-speed operation. Furthermore, it is possible to reduce the area occupied by the circuit. By using a transistor with a large on-state current, it is possible to increase the size of the display panel or Even if the number of wires increases when finer wiring is implemented, it is possible to reduce the signal delay in each wire. This makes it possible to reduce variations in display brightness.

[0113] The transistors provided in the driving circuit 82 and the display unit 81 are transistors of the same structure. A transistor may be used, or a combination of transistors with different structures may be used.

[0114] At least one of the insulating layers 212 and 213 covering each transistor is made of a material that is It is preferable to use a material in which impurities are not easily diffused, such as the insulating layer 212. In this case, the insulating layer 213 can function as a barrier film. It is possible to effectively suppress the diffusion of impurities into the transistor from the outside. This makes it possible to realize a highly reliable touch panel.

[0115] The spacer 216 is provided on the insulating layer 215 and adjusts the distance between the substrate 71 and the substrate 72. In FIG. 14, there is a gap between the spacer 216 and the light-shielding layer 232. In this example, the spacer 216 is disposed on the substrate 71 side. However, 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 spacers 216. Although materials such as silica can be used as the material, materials with elasticity such as organic resins and rubber are also preferred. In this case, the granular spacers are crushed in the vertical direction. This may be the case.

[0116] A colored layer 231, a light-shielding layer 232, etc. are provided on the substrate 72 on the substrate 71 side. 232 has an opening, and is arranged so that the opening overlaps the display area of ​​the display element 60. The color layer 231 is provided so as to overlap the display element 60 .

[0117] Materials that can be used for the light-shielding layer 232 include carbon black, metal oxides, and the like. , a composite oxide containing a solid solution of a plurality of metal oxides, etc. It is also possible to use a laminated film of films containing the material of the colored layer 231. For example, A film containing a material containing acrylic resin and a material used for a colored layer that transmits light of a certain color, and other A laminated structure with a film containing a material used for a colored layer that transmits light of a different color can be used. By using the same material for the color layer 231 and the light-shielding layer 232, the equipment can be standardized and the process can be simplified. This is preferable because it can be simplified.

[0118] For example, materials that can be used for the colored layer 231 include metal materials, resin materials, and pigments. Alternatively, a resin material containing a dye may be used.

[0119] In addition, an insulating layer that functions as an overcoat and covers the colored layer 231 and the light-shielding layer 232 is formed. It may be provided.

[0120] A connection portion 206 is provided in an area near the end of the substrate 71. The connection portion 206 is The FPC 73 is electrically connected via the layer 209. In the configuration shown in FIG. A part of the wiring 207 electrically connected to the path 82 and the same conductive film as the first electrode 221 are processed. The connecting portion 206 is formed by laminating a conductive layer ... Thus, by forming the connection portion 206 by stacking two or more conductive layers, the electrical resistance can be reduced. In addition, the mechanical strength of the connection part 206 can be increased.

[0121] In addition, in FIG. 14, as an example, the same conductive film as the gate electrode of the transistor is processed and formed. The same conductive film as the source and drain electrodes of the transistor is processed. The cross-sectional structure of an intersection 86 where the formed wiring intersects is shown.

[0122] Here, the same conductive film as the gate electrode of the transistor is processed and formed at the intersection 86. The scanning line 87 is a transistor. The wiring may be formed by processing the same conductive film as the source electrode and the drain electrode. However, other conductive films may also be used.

[0123] Input device 10 An electrode 31 and an electrode 32 are provided on the substrate 72 side of the substrate 30. 14 shows an example in which the cross section 31 has an electrode 33 and a bridge electrode 34. As shown in part 86, the electrodes 32 and 33 are formed on the same plane. A bridge electrode 34 is provided on the insulating layer 161 that covers the electrodes 33. The electrode 34 is provided between two electrodes 32, one of which is sandwiched between the other electrodes 32, via an opening provided in the insulating layer 161. The electrode 33 is electrically connected to the electrode 33 .

[0124] In the configuration shown in FIG. 14, the electrodes 33 are arranged so as not to overlap the display elements 60. That is, the opening of the electrode 33 and the display element 60 are overlapped. At this time, the electrode 33 is arranged so as not to overlap with the colored layer 231. It is preferable to arrange the electrode 33 so as to overlap the light-shielding layer 232. Although the electrode 33 is shown here as an example, the electrodes 31, 32, and Similarly, the edge electrode 34 is preferably arranged so as not to overlap the display element 60, etc. stomach.

[0125] A connecting portion 106 is provided in an area near the edge of the substrate 30. The connecting portion 106 is The FPC 50 is electrically connected via the interconnect layer 109. In the configuration shown in FIG. A part of 42 and a conductive layer obtained by processing the same conductive film as the bridge electrode 34 are laminated. , an example of configuring the connection section 106 is shown.

[0126] The connection layer 109 and the connection layer 209 are made of anisotropic conductive film (ACF). Anisotropic Conductive Film and Anisotropic Conductive Paste (ACP) A sonotropic conductive paste can be used.

[0127] Here, the substrate 30 is also used as a substrate that is directly touched by a detection object such as a finger or a stylus. In this case, a protective layer (ceramic coating, etc.) may be provided on the substrate 30. The protective layer is preferably made of, for example, silicon oxide, aluminum oxide, yttrium oxide, or yttrium oxide. Inorganic insulating materials such as yttria-stabilized zirconia (YSZ) can be used. The substrate 30 may be made of tempered glass. The tempered glass is made by an ion exchange method, an air-cooling tempering method, or the like. The material is subjected to physical or chemical treatment and has compressive stress applied to its surface. The touch sensor can be attached to one side of the tempered glass, and the other side can be used as a touch panel for electronic devices, for example. By placing it on the top surface and using it as a touch surface, the overall thickness of the device can be reduced. do.

[0128] <About each component> Each of the above components will be described below.

[0129] The substrate of the touch panel can be made of a material having a flat surface. The substrate on the side from which light is extracted is made of a material that transmits the light. For example, glass or quartz is used. Materials such as ceramic, sapphire, and organic resin 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 sufficient to provide flexibility, a flexible touch panel can be obtained. This can be achieved.

[0131] Examples of glass include alkali-free glass, barium borosilicate glass, and aluminophobic glass. Usable materials include silicate glass.

[0132] Examples of materials that are flexible and transparent to visible light include: Thickness of glass, polyethylene terephthalate (PET), polyethylene naphthalate Polyester resins such as (PEN), polyacrylonitrile resins, polyimide resins, polymers methyl methacrylate resin, polycarbonate (PC) resin, polyethersulfone (PE S) Resin, polyamide resin, cycloolefin resin, polystyrene resin, polyamide imide resin, polyvinyl chloride resin, polytetrafluoroethylene (PTFE) resin, etc. In particular, it is preferable to use a material with a low thermal expansion coefficient, such as polyamideimide. Resin, polyimide resin, PET, etc. can be suitably used. Uses substrates impregnated with resin or substrates with inorganic fillers mixed into organic resin to reduce the coefficient of thermal expansion Since the substrate using such a material is light in weight, the substrate can be easily used. The touch panel can also be made lighter.

[0133] In addition, the substrate on the side from which light is not extracted does not need to be light-transmitting. In addition to the substrate, a metal substrate, a ceramic substrate, a semiconductor substrate, etc. can also be used. Metal substrates have high thermal conductivity, and heat can be easily conducted across the entire metal substrate, making them ideal for touch panels. This is preferable because it can suppress local temperature rises. 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. It is more preferable that:

[0134] The material for the metal substrate is not particularly limited, but examples thereof include aluminum, copper, and nickel. Metals such as nickel, or alloys such as aluminum alloys or stainless steel are preferably used. It is possible.

[0135] In addition, insulating treatment is performed by oxidizing the surface of the metal substrate or forming an insulating film on the surface. For example, a substrate that has been subjected to a coating process such as spin coating or dipping, or an electrodeposition process may be used. The insulating film may be formed by deposition, evaporation, sputtering, or the like. In addition to leaving it in the air or heating it, an oxide film is formed on the surface of the substrate by anodizing or other methods. That's fine.

[0136] A hard coat layer (e.g., a thin film) is applied to a flexible substrate to protect the surface of the touch panel from scratches. a layer of a material that can disperse pressure (for example, an aramid resin layer) In addition, it is possible to suppress the deterioration of the life of the display element due to moisture, etc. For this purpose, an insulating film with low water permeability may be formed on a flexible substrate. films containing nitrogen and silicon, such as silicon nitride films and silicon oxynitride films, and aluminum nitride films It may also have an insulating film with low water permeability, such as a film containing nitrogen and aluminum.

[0137] The substrate may be formed by laminating a plurality of layers. In particular, a substrate having a glass layer may be used. This improves the barrier properties against water and oxygen, making it possible to create a highly reliable touch panel. do.

[0138] For example, a substrate having a glass layer, an adhesive layer, and an organic resin layer stacked from the side closest to the display element is used. The thickness of the glass layer is preferably 20 μm or more and 200 μm or less. The thickness of the glass layer is 25 μm or more and 100 μm or less. A glass layer with such a thickness is highly resistant to water and oxygen. It can simultaneously achieve high barrier properties and flexibility. The thickness of the organic resin layer is 10 μm. The thickness of such organic resin is set to be 200 μm or more, and preferably 20 μm or more and 50 μm or less. By placing the layer outside the glass layer, it is possible to suppress breakage and cracks in the glass layer and to improve mechanical strength. The composite material of such glass material and organic resin can be used as a substrate. By applying this technology, it is possible to create a highly reliable flexible touch panel. do.

[0139] The transistor has a conductive layer that functions as a gate electrode, a semiconductor layer, and a a conductive layer that functions as a drain electrode; a conductive layer that functions as a gate insulating layer; and an insulating layer.

[0140] Note that there is no particular limitation on the structure of a transistor included in a touch panel of one embodiment of the present invention. For example, a staggered transistor or an inverted staggered transistor may be used. In addition, the transistor structure may be either a top gate type or a bottom gate type. The semiconductor material used for the transistor is not particularly limited, and examples thereof include oxide semiconductors, silicon Examples of suitable materials include silicon, germanium, and organic semiconductors.

[0141] The crystallinity of the semiconductor material used in the transistor is not particularly limited. A semiconductor having crystallinity (a microcrystalline semiconductor, a polycrystalline semiconductor, a single-crystal semiconductor, or a semiconductor having a partially crystalline region) If a semiconductor having crystallinity is used, This is preferable because it can suppress deterioration of the resistor characteristics.

[0142] Semiconductor materials used in transistors include, for example, elements of group 14, compound semiconductors, A silicon or oxide semiconductor can be used for the semiconductor layer. A semiconductor containing gallium arsenide, an oxide semiconductor containing indium, or the like can be used.

[0143] In particular, an oxide semiconductor can be used as a semiconductor in which a channel of a transistor is formed. It is particularly preferable to use an oxide semiconductor having a larger band gap than silicon. It is preferable to use a semiconductor material with a wider band gap and lower carrier density than silicon. The use of such a compound is preferable because it can reduce the current in the off state of the transistor.

[0144] For example, the oxide semiconductor may contain at least indium (In) or zinc (Zn It is preferable that the oxide contains In-M-Zn (wherein M is Al, Ti, Metals such as Ga, Ge, Y, Zr, Sn, La, Ce or Hf) nothing.

[0145] In particular, the semiconductor layer has a plurality of crystal portions, and the c-axes of the crystal portions are aligned with the surface on which the semiconductor layer is formed. Or, the crystals are oriented approximately perpendicular to the upper surface of the semiconductor layer, and grain boundaries are observed between adjacent crystal portions. It is preferable to use an oxide semiconductor film that does not have a resist pattern.

[0146] Such oxide semiconductors have no crystal grain boundaries, so when the display panel is bent, The occurrence of cracks in the oxide semiconductor film due to stress is suppressed. Such oxide semiconductors are suitable for use in touch panels that are flexible and can be curved. It can be used.

[0147] In addition, by using such a crystalline oxide semiconductor for the semiconductor layer, This suppresses fluctuations in the resistance, thereby achieving a highly reliable transistor.

[0148] In addition, a transistor using an oxide semiconductor with a wider band gap than silicon is Due to its low off-state current, the charge stored in the capacitor connected in series with the transistor can be maintained for a long period of time. By applying such a transistor to a pixel, It is also possible to stop the driving circuit while maintaining the gradation of the image displayed in each display area. As a result, a display device with extremely reduced power consumption can be realized.

[0149] Alternatively, silicon is preferably used as the semiconductor in which the channel of the transistor is formed. Although amorphous silicon may be used as silicon, silicon having crystallinity is particularly preferred. It is preferable to use silicon. For example, microcrystalline silicon, polycrystalline silicon, single crystal silicon, etc. In particular, polycrystalline silicon has a lower temperature than single-crystal silicon. It can be formed without any additional process and has higher field effect mobility and higher reliability than amorphous silicon. By applying such a polycrystalline semiconductor to the pixel, the aperture ratio of the pixel can be improved. Even when the pixels are extremely fine, the scanning line driving circuit and the signal line driving circuit can be This makes it possible to form the circuit and the pixel on the same substrate, reducing the number of parts that make up electronic devices. It is possible.

[0150] In addition to the gate, source, and drain of the transistor, various wiring that makes up the touch panel Materials that can be used for conductive layers such as wires and electrodes include aluminum, titanium, Chromium, nickel, copper, yttrium, zirconium, molybdenum, silver, tantalum, or Examples of the material include metals such as tungsten, or alloys containing tungsten as the main component. Films containing these materials can be used as single layers or as laminate structures. a single-layer structure of aluminum film containing titanium; a two-layer structure of aluminum film laminated on titanium film; Two-layer structure with aluminum film laminated on tungsten film, copper-magnesium-aluminum Two-layer structure with copper film laminated on aluminum alloy film, two-layer structure with copper film laminated on titanium film, tungsten Two-layer structure with copper film laminated on titanium film, titanium film or titanium nitride film, and titanium film laminated on top of that. An aluminum film or a copper film is laminated, and a titanium film or a titanium nitride film is further formed thereon. Three-layer structure consisting of a molybdenum film or molybdenum nitride film and an aluminum film or A three-layer structure in which a copper film is laminated on top of a molybdenum film or molybdenum nitride film is formed on top of that. The transparent conductive material containing indium oxide, tin oxide or zinc oxide is used. Furthermore, when copper containing manganese is used, the controllability of the shape by etching is improved. Therefore, it is preferable.

[0151] It can also be used for conductive layers such as various wiring and electrodes that make up touch panels. Examples of light-transmitting materials include indium oxide, indium tin oxide, and indium zinc oxide. Conductive oxides such as zinc oxide, zinc oxide, and zinc oxide doped with gallium, or graphene are used. Or, gold, silver, platinum, magnesium, nickel, tungsten, Metallic materials such as chromium, molybdenum, iron, cobalt, copper, palladium, or titanium, and An alloy material containing a metal material can be used. Alternatively, a nitride of the metal material (e.g., Titanium nitride) may also be used. Metal materials, alloy materials (or their nitrides) When using a conductive film, it is sufficient to make it thin enough to have light-transmitting properties. For example, an alloy of silver and magnesium and indium tin oxide can be used as a conductive layer. It is preferable to use a laminated film of materials, because the conductivity can be increased.

[0152] Examples of insulating materials that can be used for the insulating layers, overcoats, spacers, etc. include: Examples include resins such as acrylic and epoxy, resins with siloxane bonds, silicon oxide, Inorganic insulation such as silicon oxynitride, silicon nitride oxide, silicon nitride, and aluminum oxide Materials can also be used.

[0153] It is also preferable that the light emitting element is provided between a pair of insulating films with low water permeability. This prevents impurities such as water from entering the light emitting element, and prevents a decrease in the reliability of the device. It can be controlled.

[0154] As insulating films with low water permeability, films containing nitrogen and silicon such as silicon nitride film and silicon nitride oxide film are used. and films containing nitrogen and aluminum, such as an aluminum nitride film. A silicon oxide film, a silicon oxynitride film, an aluminum oxide film, or the like may also be used.

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

[0156] Each adhesive layer may be a photo-curable adhesive such as an ultraviolet curable adhesive, a reaction-curable adhesive, or a heat-curable adhesive. Various curing adhesives such as adhesives and anaerobic adhesives can be used. Epoxy resin, acrylic resin, silicone resin, phenolic resin, polyimide resin, Mido resin, PVC (polyvinyl chloride) resin, PVB (polyvinyl butyral) resin, EVA (ethylene vinyl acetate) resin, etc. In particular, moisture permeability of epoxy resin, etc. A material with low adhesiveness is preferable. Two-component resin may also be used. may also be used.

[0157] The resin may also contain a desiccant. For example, an oxide of an alkaline earth metal (an acid The material used is one that absorbs moisture by chemical adsorption, such as calcium oxide or barium oxide. Alternatively, materials such as zeolite and silica gel can absorb water by physical adsorption. If a desiccant is included, impurities such as moisture can be absorbed into the functional element. This is preferable because it can suppress the intrusion of foreign matter and improve the reliability of the display panel.

[0158] Furthermore, by mixing a filler with a high refractive index or a light scattering material into the resin, it is possible to For example, titanium oxide, barium oxide, Zeolite, zirconium, etc. can be used.

[0159] The light emitting element can be a self-luminous element, which can be illuminated by current or voltage. The category includes devices whose light intensity is controlled, such as light-emitting diodes (LEDs), organic An EL element, an inorganic EL element, etc. can be used.

[0160] Light-emitting elements are available in top-emission, bottom-emission, and dual-emission types. The electrode on the light extraction side uses a conductive film that transmits visible light. In addition, it is preferable to use a conductive film that reflects visible light for the electrode on the side from which light is not extracted. stomach.

[0161] The EL layer has at least a light-emitting layer. The EL layer has a hole-injecting layer as a layer other than the light-emitting layer. high hole-transporting material, hole-blocking material, high electron-transporting material, electron injection materials with high electron transporting and hole transporting properties, or bipolar materials (materials with high electron transporting and hole transporting properties), etc. The film may further include a layer containing a metal oxide.

[0162] The EL layer can be made of either low molecular weight compounds or high molecular weight compounds. The layers constituting the EL layer may each be formed by a deposition method (including a vacuum deposition method). The layer can be formed by a method such as a transfer method, a printing method, an ink jet method, or a coating method.

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

[0164] When a white light emitting element is used as the light emitting element, two or more types of light emitting elements are used in the EL layer. For example, it is preferable to use a configuration in which two or more luminescent materials each emit light of a complementary color. White light can be obtained by selecting a luminescent material so that the following relationship is established. Luminescent materials that emit light in R (red), G (green), B (blue), Y (yellow), O (orange), etc. Or among luminescent materials that emit light containing spectral components of two or more colors of R, G, and B, It is preferable that the spectrum of light emitted from the light-emitting element is in the visible light region. A light emitting element having two or more peaks within a wavelength range (for example, 350 nm to 750 nm) is used. It is preferable to use a material having a peak in the yellow wavelength region. Preferably, the material has spectral components in the green and red wavelength regions as well.

[0165] The EL layer is made up of 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. For example, a plurality of light-emitting layers in the EL layer are preferably stacked. The layers may be stacked in contact with each other or with a separating layer interposed therebetween. For example, a separation layer may be provided between the fluorescent light-emitting layer and the phosphorescent light-emitting layer. Between the light-emitting layer and the phosphorescent light-emitting layer, the same material as that of the fluorescent or phosphorescent light-emitting layer (for example, and a region containing no light-emitting material (e.g., a resist material, an assist material) and no light-emitting material. This facilitates the fabrication of the light-emitting element and reduces the driving voltage.

[0166] The conductive film that transmits visible light is made of, 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 containing gold, silver, platinum, magnesium, etc. , 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. Also, a laminated film of the above materials can be used as the conductive layer. For example, a laminated film of silver and magnesium It is preferable to use a laminated film of an alloy of ITO and a rubber material, as this can increase the electrical conductivity. 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, or the like. Metallic materials such as stainless steel, chromium, molybdenum, iron, cobalt, copper, or palladium, or In addition, the above metal materials and alloys may contain lanthanum. 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. By laminating the metal oxide film, oxidation of the aluminum alloy film can be suppressed. Examples of materials for the metal film and metal oxide film include titanium and titanium oxide. A conductive film that transmits visible light and a film made of a metal material may be laminated. For example, silver and ITO A laminated film of an alloy of silver and magnesium and ITO can be used.

[0168] The conductive films may be formed by evaporation or sputtering. Using a discharge method such as inkjet printing, a printing method such as screen printing, or a plating method It can be formed.

[0169] The light-emitting element may be a single element having one EL layer, or a light-emitting element having multiple EL layers. and a charge generating layer may be laminated therebetween to form a tandem element.

[0170] This concludes the explanation of each component.

[0171] Below, an example of a cross-sectional structure that is partially different from the cross-sectional structure example 1 will be described with reference to the drawings. In the following, we will omit the explanation of the parts that overlap with the above and will only explain the differences. do.

[0172] [Cross-sectional configuration example 2] FIG. 15 shows an example of a cross-sectional configuration of a touch panel 100 that is partially different from that shown in FIG. There are.

[0173] In FIG. 15, the transistor 201 and the transistor 202 have their second gates A conductive layer that functions as a conductive layer is provided between the insulating layer 213 and the insulating layer 214. 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 edge of the EL layer 222 is covered with the second electrode 223. The EL layer 222 is formed by, for example, a vapor deposition method using a metal mask or a printing method. The ink jet method or the like can be used to form the ink jet recording layer.

[0175] 15 does not include the optical adjustment layer 224 and the colored layer 231 shown in FIG. 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 functions as a Alternatively, if the second electrode 223 is provided so as to cover the edge 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 aluminum oxide are used. Aluminum, aluminum oxide nitride, aluminum nitride oxide, aluminum nitride, aluminum oxide It is preferable to use aluminum oxide, etc. In particular, aluminum oxide has excellent barrier properties. The protective film 217 can be formed by a sputtering method, a vapor deposition method, a C VD (Chemical Vapor Deposition) method, ALD (Atomi In particular, the ALD method is The use of A is preferable because it can suppress damage to the display element 60 during film formation. The LD method can be thermal ALD, but PEALD (Plasma Enhanced Laser Deposition) is also used. The advanced atomic layer deposition (ALD) method is more preferable because it allows film formation at low temperatures, such as room temperature. I wish.

[0178] The configuration of the transistor, the configuration of the display element 60, and the configuration of the protective film 217 illustrated here are These are the structures of transistors, display elements, etc. in the cross-sectional structures shown in FIG. 14 and the following examples. This can be replaced with composition.

[0179] [Cross-sectional configuration example 3] The touch panel shown in FIG. 16 has a substrate 111 and a substrate 112. 2 is bonded to the substrate 111 by an adhesive layer 152, and the substrate 111 and the substrate 112 are bonded to each other by an adhesive layer 153. It is glued.

[0180] The electrodes 32, wiring 42, etc. are formed on the substrate 111. The electrodes 31, wiring 41 (see FIG. 16, the FPC 50 is formed on the substrate 111. However, in an area not shown, an FPC is also connected to the substrate 112. do.

[0181] In this way, when two boards are used as the configuration of the input device 10, the board 111 and the board It is preferable to use a substrate 112 that is equal to or thinner than the substrates 71 and 72. In particular, it is preferable to use the flexible material described above 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] 17 includes a substrate 113. The substrate 113 and the substrate 72 are bonded together by an adhesive layer. It is attached by 152.

[0184] Electrodes 32, 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 forming the light-emitting element are provided on the front and back surfaces of the substrate 113.

[0185] 17, the FPC 50a is connected to the connection portion 106a where a part of the wiring 42 is exposed. 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 offset from each other.

[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 side. Specifically, a bridge electrode 34 and a bridge electrode 35 are provided on the substrate 72. An insulating layer 161 covering a part of the ridge electrode 34, and an electrode 31, an electrode 32, and a wiring layer 33 on the insulating layer 161. Lines 41 (not shown), wiring 42, etc. are provided.

[0187] 18, the protective substrate 130 and the substrate 72 may be bonded with an adhesive layer 152. good.

[0188] With this configuration, the input device 10 and the display panel 70 can share the same substrate. This allows the touch panel to be made extremely thin.

[0189] [Cross-sectional configuration example 6] FIG. 19 shows the configuration of the touch sensor illustrated in FIG. 18 and the color-coded method illustrated in FIG. 15. When the touch panel configuration is combined with the display element 60, the light emitting element to which the above-mentioned is applied is used. 19 shows an example in which the light-shielding layer 232 is not provided. are.

[0190] [Cross-sectional configuration example 7] The touch panel shown in FIG. 20 has a touch sensor on the surface of the substrate 72 facing the substrate 71. Electrodes and the like are provided. Specifically, electrodes 32, 33, wiring 41 (see FIG. (not shown), wiring 42 and the like, an insulating layer 161 covering these, and a bridge electrode on the insulating layer 161. Poles 34 and the like are provided.

[0191] In addition, an insulating layer 233 is provided to cover the electrodes and the like that constitute the touch sensor. Furthermore, a colored layer 231, a light-shielding layer 232, etc. are provided on the insulating layer 233.

[0192] With this configuration, the input device 10 and the display panel 70 can share the same substrate. In addition, one surface of the substrate 72 can be used as a touch surface, so the thickness of the touch panel 100 can be reduced. The thickness can be further reduced.

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

[0194] The touch panel shown in FIG. 21 includes a substrate 91, an adhesive layer 92, a substrate 93, and a substrate 94 instead of the substrate 71. and an insulating layer 94. Also, instead of the substrate 72, a substrate 191 and an adhesive layer 19 are used. 2, a substrate 193, and an insulating layer 194.

[0195] The insulating layer 94 and the insulating layer 194 are made of a material that is difficult for impurities such as water and hydrogen to diffuse. By adopting such a configuration, the substrate 91, the substrate 93, the substrate 191, and the substrate Even if a moisture-permeable material is used for 193, the display element 60 and each transistor It is possible to effectively prevent the diffusion of impurities from the outside, resulting in a highly reliable touch panel. This makes it possible to achieve this.

[0196] The substrate 93 and the substrate 193 can be made of a flexible material such as a resin. The plate 91 and the substrate 191 are preferably made of a flexible film or the like. By using a flexible material for the substrate, a bendable touch panel can be realized. It is possible.

[0197] [Cross-sectional configuration example 9] The touch panel shown in FIG. 22 has no shield between the electrodes constituting the touch sensor and the substrate 72. Specifically, the light-shielding layer 232 is provided on the substrate 72, and the light-shielding layer 232 An insulating layer 234 is provided over the layer 232. The electrode 32, the electrode 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 top, and a coloring 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 that constitutes 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 visible. Therefore, not only is the thickness thin, but the visibility is also improved. A further improved touch panel can be realized.

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

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

[0202] By using a flexible material for the substrate 91 and the substrate 191, it is possible to bend the substrate. 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. The touch panel also includes a polarizing plate 131, a polarizing plate 132, and a backlight 133. It has.

[0204] Here, the display element 208 is a FFS (Fringe Field Switching ng) mode is applied to the liquid crystal element. The liquid crystal display device has a liquid crystal display device 251, an electrode 252, and a liquid crystal 253. The electrode 251 is insulated on the electrode 252. The layer 254 is provided therebetween and has a comb-like or slit-like shape. .

[0205] An overcoat 255 is provided to cover the colored layer 231 and the light-shielding layer 232. The overcoat 255 prevents the pigments contained in the colored layer 231 and the light-shielding layer 232 from penetrating the liquid crystal 25. 3. It has the function of suppressing diffusion.

[0206] In addition, the liquid crystal 253 is formed 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 an adhesive layer 157. The backlight 133 is bonded to the polarizing plate 131 by an adhesive layer 158. The polarizer 132 is located between the substrate 72 and the substrate 30. The polarizer 132 is attached to the adhesive layer 155. Therefore, the substrate 72 is adhered to the substrate 30 (specifically, the substrate 30) by the adhesive layer 156. The insulating layer 161 is bonded to the insulating layer 161.

[0208] Although the above describes liquid crystal elements that use the FFS mode, there are other types as well. A (Vertical Alignment) mode, TN (Twisted Nema) tic) mode, IPS (In-Plane-Switching) mode, ASM (A xially Symmetric aligned Micro-cell) mode, OCB(Optically Compensated Birefringence) mode, FLC (Ferroelectric Liquid Crystal) mode , AFLC (AntiFerroelectric Liquid Crystal) model A card or the like can be used.

[0209] In addition, the liquid crystals include thermotropic liquid crystals, low molecular weight liquid crystals, polymer liquid crystals, ferroelectric liquid crystals, Antiferroelectric liquid crystal, Polymer Dispersed Liquid Crystal (PDLC) Liquid crystals that exhibit a blue phase can also be used. When used, an alignment film is not required and a wide viewing angle is obtained, which is preferable.

[0210] [Cross-sectional configuration example 12] FIG. 25 shows a cross-sectional structure of a touch panel when a liquid crystal display device is used as the display panel 70. 25 is an example in which a polarizing plate 132 is a polarizing plate for forming a touch sensor. Specifically, the substrate on which the electrodes 31, 32, etc. are formed is 114 is adhered to the substrate 72 by an adhesive layer 152, and the polarizer 132 is adhered to the substrate 72 by an adhesive layer 155. The polarizing plate 132 is bonded to the plate 114. The polarizing plate 132 is bonded to the polarizing plate 114 by an adhesive layer 156 on the viewing side. A protective substrate 130 is provided which is bonded to a polarizing plate 132 .

[0211] If a flexible film or the like is used for the substrate 114, the thickness of the touch panel can be reduced. This is preferable because it can

[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 used as the display panel. In the touch panel shown in FIG. 26, electrodes and the like that constitute the touch sensor are disposed on the substrate 72. 7 shows an example in which the electrode 32 and the electrode 33 are formed on the surface of the substrate 72. 33, wiring 41 (not shown), wiring 42, etc., an insulating layer 161 covering these, and an insulating layer 1 The bridge electrode 34 and the like are provided on the surface 61. In addition, the electrodes constituting the touch sensor are An insulating layer 233 is provided to cover the colored layer 231 and the light-shielding layer 232. 232 and so on are provided.

[0213] A polarizing plate 132 is bonded to the opposite surface of the substrate 72 by an adhesive layer 155. The polarizing plate 132 is bonded to the protective substrate 130 by an adhesive layer 156 .

[0214] With this configuration, the input device and the display panel can share the same substrate. One side of the 72 can be used as a touch surface, making the touch panel even thinner It is possible.

[0215] [Cross-sectional configuration example 14] FIG. 27 shows an example of a cross-sectional configuration of a touch panel when a liquid crystal display device is used as the display panel. In the touch panel shown in FIG. 27, electrodes and the like that constitute the touch sensor are disposed on the substrate 72. 7 shows an example in which the wiring board 72 is provided on the surface opposite to the surface on the side of the wiring board 72. On the surface opposite to the surface on which the color layer 231 and the like are provided, a bridge electrode 34 and a bridge electrode An insulating layer 161 covering a part of the electrode 34, and an electrode 31, an electrode 32, and a wiring 41 ( (not shown), wiring 42, etc. are provided on the substrate 72. The polarizing plate 132 is attached to the polarizing plate 132, and the protective substrate 13 is attached to the polarizing plate 132 by an adhesive layer 156. 0 is pasted in.

[0216] The above is a 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] For convenience, the following will be used: a configuration including pixels and circuits, a configuration including optical members such as color filters, and a The structure including the electrodes and wiring that make up the touch sensor is called the element layer. For example, it includes a display element, and in addition to the display element, it is used for wiring electrically connected to the display element, pixels, and circuits. The semiconductor device may include an element such as a transistor.

[0219] In this case, a support (for example, the substrate in FIG. 23) having an insulating surface on which an element layer is formed is used. The plate 91 or substrate 191 will be referred to as the substrate.

[0220] As a method for forming an element layer on a substrate having a flexible insulating surface, a method for forming a layer directly on the substrate and a method for forming a contact element layer, and a method for forming the element layer on a rigid support substrate and then connecting the element layer and the support. and a method of peeling off the support base material and transferring the element layer to the substrate.

[0221] If the material constituting the substrate is heat resistant to the heat applied in the process of forming the element layer, It is preferable to form the element layer directly on the substrate, since this simplifies the process. When the element layer is formed in a state where the element is fixed to the support substrate, it is easy to transport the element within and between devices. This is preferable because it makes things easier.

[0222] In addition, when a method is used in which an element layer is formed on a support base material and then transferred to a substrate, the support material is first A release layer and an insulating layer are laminated on the support substrate, and an element layer is formed on the insulating layer. The support substrate and the element layer are peeled off and transferred to the substrate. The material may be selected so that release occurs at the interface of the edge layer or in the release layer.

[0223] For example, a layer containing a high melting point metal material such as tungsten as a peeling layer and an oxide layer of the metal material A layer containing a material is stacked, and silicon nitride or silicon oxynitride is used as an insulating layer on the peeling layer. It is preferable to use a multi-layer structure. When a high melting point metal material is used, the device layer forming process This is preferable because it increases the degree of freedom.

[0224] Peeling can be achieved by applying mechanical force, etching the peeling layer, or by breaking down the peeling interface. The peeling may be performed by dropping a liquid onto a portion of the surface and allowing it to penetrate the entire peeling interface. Alternatively, the peeling may be performed by applying heat to the peeling interface, taking advantage of the difference in thermal expansion.

[0225] Furthermore, if peeling is possible at the interface between the support substrate and the insulating layer, it is not necessary to provide a peel layer. For example, glass is used as the support substrate and an organic resin such as polyimide is used as the insulating layer. A part of the organic resin is locally heated using a laser beam or the like to form a peeling starting point. Alternatively, the separation may be performed at the interface between the glass and the insulating layer. A metal layer is provided between the edge layers, and an electric current is passed through the metal layer to heat the metal layer, The separation may be performed at the interface between the metal layer and the insulating layer. A layer of a material that absorbs light (metal, semiconductor, insulator, etc.) is placed between the insulating layers, and laser light is applied to that layer. Alternatively, the starting point of the peeling may be formed by locally heating the substrate by irradiating the substrate with light such as ultraviolet light. In the method shown, an insulating layer made of organic resin can be used as the substrate.

[0226] Examples of flexible substrates include polyethylene terephthalate (PET), poly Polyester resins such as ethylene naphthalate (PEN), polyacrylonitrile resins, Polyimide resin, polymethyl methacrylate resin, polycarbonate (PC) resin, polyethylene Polyethersulfone (PES) resin, polyamide resin, cycloolefin resin, polystyrene Resins, polyamide-imide resins, polyvinyl chloride resins, etc. are particularly suitable. It is preferable to use a material with a low thermal expansion coefficient, for example, 30×10 -6 / K or less Polyamide-imide resin, polyimide resin, PET, etc. can be suitably used. Substrates made of resin-impregnated fibers (also called prepregs) and inorganic fillers mixed with organic resins are also used. It is also possible to use a substrate with a reduced thermal expansion coefficient.

[0227] When the above materials contain fibrous bodies, the fibrous bodies are made of high strength organic or inorganic compounds. High strength fibers are specifically fibers with high tensile modulus or Young's modulus. Representative examples include polyvinyl alcohol fibers, polyester fibers, and polyamide fibers. Mid fiber, polyethylene fiber, aramid fiber, polyparaphenylene benzobisoxide Examples of the fiber include Sasol fiber, glass fiber, and carbon fiber. Examples of glass fibers include those made from glass fiber such as S-glass, D-glass, and Q-glass. Alternatively, the fiber is used in the form of a nonwoven fabric, and the resin is impregnated into the fiber, and the resin is hardened to form a flexible structure. As a flexible substrate, a substrate made of a fiber body and a resin may be used. The use of a structure is preferable because it improves reliability against damage due to bending or local pressure. stomach.

[0228] Alternatively, glass, metal, or the like that is thin enough to be flexible can also be used as the substrate. Alternatively, a composite material in which glass and a resin material are bonded together may be used.

[0229] For example, in the case of the configuration shown in FIG. 23, a first release layer and an insulating layer 94 are sequentially formed on a first support base material. After forming the first supporting structure, the upper layer structure is formed. After forming the second release layer and the insulating layer 194 on the material in this order, the structure above them is formed. Next, the first supporting base material and the second supporting base material are bonded together with an adhesive layer 151. Then, the second release layer is peeled off at the interface between the second release layer and the insulating layer 194, thereby forming the second support substrate and the second release layer. The delamination is removed, and the insulating layer 194 and the substrate 191 are bonded together with the adhesive layer 192. The first support substrate and the first release layer are removed by peeling at the interface between the first release layer and the insulating layer 94. The insulating layer 94 and the substrate 91 are then bonded together with an adhesive layer 92. Either side may go first.

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

[0231] Here, examples in which light-emitting elements or liquid crystal elements are used as display elements are shown. One aspect of the present invention is not limited to this.

[0232] For example, MEMS (Micro Electro Mechanical Systems) A display device using a display element such as an electron-emitting element or an electron-emitting device can be used. Display elements using MS include shutter-type MEMS display elements and optical interference-type ME Examples include MS display elements. Electron-emitting elements are made of carbon nanotubes. Electronic paper may also be used. As electronic paper, a microcapsule type , electrophoresis method, electrowetting method, electronic liquid powder (registered trademark) method, etc. The element can be used.

[0233] This embodiment may be combined, at least in part, with other embodiments described in this specification. It can be implemented in combination.

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

[0235] [Example of sensor detection method] FIG. 28A is a block diagram showing the configuration of a mutual capacitance type touch sensor. In (A), a pulse voltage output circuit 601 and a current detection circuit 602 are shown. In (A), an electrode 621 to which a pulse voltage is applied and an electrode 622 to which a change in current is detected are arranged. These are shown as six wires, X1-X6 and Y1-Y6, respectively. A) illustrates a capacitance 603 formed by overlapping an electrode 621 and an electrode 622. The functions of electrode 621 and electrode 622 may be interchangeable.

[0236] The pulse voltage output circuit 601 is a circuit for applying pulses to the X1-X6 wirings in sequence. When a pulse voltage is applied to the wirings X1-X6, the electrodes 6 forming the capacitance 603 An electric field is generated between the capacitor 621 and the electrode 622. The electric field generated between the electrodes is reduced by shielding or the like. By generating a change in the mutual capacitance of O3, the proximity or contact of the object to be detected is detected. It is possible.

[0237] The current detection circuit 602 detects the current in the wires Y1-Y6 due to a change in capacitance in the capacitor 603. The Y1-Y6 wiring is used to detect changes in the proximity or connection of the object to be detected. If there is no contact, the detected current value will not change, but the proximity or contact of the object to be detected will When the capacitance decreases, the change in the current value is detected. This can be done using a road or the like.

[0238] Next, FIG. 28(B) shows the input of the mutual capacitance type touch sensor shown in FIG. 28(A). The timing chart of the output waveform is shown in Figure 28(B). In FIG. 28(B), when the object to be detected is not detected ( Two cases are shown: when the object is detected (touched) and when the object is not detected (touched). For the wiring of Y1-Y6, the waveform is shown as a voltage value corresponding to the detected current value. There are.

[0239] A pulse voltage is applied to the wires X1-X6 in order, and the The waveform in the Y6 wiring changes. When there is no proximity or contact of the object to be detected, X1-X6 The waveforms of Y1-Y6 change uniformly according to the change in the voltage of the wiring. Or, at the contact point, the current value decreases, and the corresponding voltage waveform also changes. do.

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

[0241] The pulse voltage output circuit 601 and the current detection circuit 602 are integrated into an IC. It is preferable that the touch panel be mounted in a state where the touch panel is mounted, or that the touch panel be mounted on a substrate inside the housing of an electronic device. In addition, when using a flexible touch panel, parasitic capacitance increases at the bent portion. Therefore, a drive that is less susceptible to noise should be used. It is preferable to use ICs that have been applied with a dynamic method. For example, the signal-to-noise ratio (S / N ratio) It is preferable to use an IC that employs a driving method that increases the

[0242] In addition, in FIG. 28(A), a panel in which only a capacitor 603 is provided at the intersection of the wiring as a touch sensor is used. The configuration of a passive matrix touch sensor has been shown, but an active matrix type touch sensor with transistors and capacitors has also been shown. An active matrix touch sensor may also be used. 1 shows an example of one sensor circuit included in a touch sensor.

[0243] The sensor circuit includes a capacitor 603, a transistor 611, a transistor 612, and a transistor The transistor 613 has a gate to which a signal G2 is applied, and a source or A voltage VRES is applied to one of the drains, and the other is connected to one electrode of the capacitor 603 and the transistor. The transistor 611 is electrically connected to the gate of the transistor 611. One is electrically connected to one of the source and drain of the transistor 612, and the other is connected to a voltage V The transistor 612 receives a signal G1 at its gate and a signal SS at its source or drain. The other electrode of the capacitor 603 is electrically connected to the wiring ML. can be obtained.

[0244] Next, the operation of the sensor circuit will be described. First, the signal G2 is output from the transistor 613. When a potential that turns on the transistor 611 is applied, the gate of the transistor 611 is connected to the node A potential corresponding to the voltage VRES is applied to node n. By applying a potential that turns off 613, the potential of the node n is maintained.

[0245] Next, the capacitance of the capacitor 603 changes when a detected object such as a finger approaches or touches the sensor. Accordingly, the potential of the node n changes from VRES.

[0246] The read operation applies a potential to the signal G1 that turns on the transistor 612. The current flowing through the transistor 611 in accordance with the potential of the node n, that is, the current flowing through the wiring ML, is By detecting this current, it is possible to detect the proximity or contact of an object to be detected. can.

[0247] The transistors 611, 612, and 613 have channels It is preferable to use a transistor in which an oxide semiconductor is used for a semiconductor layer to be formed. By applying such a transistor to the transistor 613, the potential of the node n It is possible to maintain VRES for a long period of time, and the operation of supplying VRES to node n again ( This reduces the frequency of the refresh operation.

[0248] [Configuration example of an in-cell touch panel] In the above, the electrodes constituting the touch sensor are provided on a substrate different from the substrate on which the display element and the like are provided. Although the case where the touch sensor is formed on a plate is shown, it is also possible to form the touch sensor on a substrate on which a display element or the like is provided. Alternatively, one or both of a pair of electrodes may be provided.

[0249] The following describes the configuration of a touch panel in which a touch sensor is incorporated into a display unit having multiple pixels. Here, a liquid crystal element is used as a display element provided in a pixel. Here is an example.

[0250] FIG. 30(A) shows one of the pixel circuits provided in the display unit of the touch panel exemplified in this configuration example. FIG. 1 is an equivalent circuit diagram of a portion.

[0251] One pixel has at least a transistor 3503 and a liquid crystal element 3504. A wiring 3501 is connected to the gate of the transistor 3503, and a wiring 3502 is connected to either the source or the drain. 02 are electrically connected to each other.

[0252] The pixel circuit includes a plurality of wirings (for example, wiring 3510_1, wiring 3510_2, wiring 3510_3, wiring 3510_4, wiring 3510_5, wiring 3510_6, wiring 3510_7, wiring 3510_8, wiring 3510_9, wiring 3510_10, wiring 3510_11, wiring 3510_12, wiring 3 _2) and a plurality of wirings (for example, wiring 3511) extending in the Y direction, which are mutually The electrodes are arranged to intersect with each other, and a capacitance is formed therebetween.

[0253] In addition, among the pixels provided in the pixel circuit, some adjacent pixels are The electrodes of the liquid crystal elements are electrically connected to each other to form one block. The lock is divided into island blocks (e.g., block 3515_1, block 3515_2) and , linear blocks extending in the Y direction (for example, block 3516) Although only a part of the pixel circuit is shown in FIG. 30, these two types of The blocks are repeatedly arranged in the X and Y directions.

[0254] The wiring 3510_1 (or 3510_2) extending in the X direction is connected to the island-shaped block 351 5_1 (or block 3515_2). The wiring 3510_1 extending in the X direction is discontinuous along the X direction via a line-shaped block. The plurality of island-shaped blocks 3515_1 arranged in the Y direction are electrically connected. The existing wiring 3511 is electrically connected to the linear block 3516 .

[0255] FIG. 30(B) shows a plurality of wirings 3510 extending in the X direction and a plurality of wirings 3510 extending in the Y direction. 3 is an equivalent circuit diagram showing the connection configuration of the wiring 3511. An input voltage or a common potential can be input to the wiring 3 extending in the Y direction. A ground potential is input to each of the wirings 3511, or the wiring 3511 is electrically connected to the detection circuit. It is possible.

[0256] The operation of the above-mentioned touch panel will be described below with reference to FIGS.

[0257] Here, one frame period is divided into a writing period and a detection period. This is the period when image data is written to the wiring 3510 (gate line or scanning line). On the other hand, the detection period is the period during which sensing is performed by the touch sensor. The wirings 3510 extending in the X direction are sequentially selected and an input voltage is input.

[0258] 31A is an equivalent circuit diagram during the writing period. A common potential is input to both the wiring 3510 extending in the Y direction and the wiring 3511 extending in the Y direction. can be.

[0259] FIG. 31(B) is an equivalent circuit diagram at a certain point in the detection period. Each of the wirings 3511 extending in the X direction is electrically connected to a detection circuit. Of the wirings 3510, the input voltage is input to the selected one, and the other A common potential is input.

[0260] The driving method exemplified here is applicable not only to the in-cell method but also to the touch panel exemplified above. This can also be applied to the driver and can be used in combination with the driving method example shown above. Cut.

[0261] In this way, the image writing period and the period for sensing by the touch sensor can be separated. This prevents touch noise caused by pixel writing noise. The decrease in sensitivity of the sensor can be suppressed.

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

[0263] An input device, a display device, or an input / output device of one embodiment of the present invention is used in an electronic device or a lighting device. The input device, the display device, or the input / output device of one embodiment of the present invention can be used to produce a song. In addition, highly reliable electronic devices and lighting devices can be manufactured. The device, display device, or input / output device is used to provide flexible and highly reliable electronic equipment and lighting. Furthermore, a touch panel or an input / output device according to one embodiment of the present invention can be manufactured. It is possible to manufacture electronic devices and lighting devices with improved detection sensitivity and detection accuracy of the sensor.

[0264] Examples of electronic devices include television sets (also known as televisions or television receivers). (hereinafter referred to as "computer monitors"), digital cameras, digital video cameras, digital photo frames, mobile phones (also called mobile phones or mobile phone devices), portable game consoles, Examples include portable information terminals, audio playback devices, and large game machines such as pachinko machines.

[0265] Furthermore, when the electronic device or lighting device of one embodiment of the present invention is flexible, it can be easily installed inside a house or a building. It can also be incorporated into walls or exterior walls, or along the curved surfaces of the interior or exterior of a vehicle. be.

[0266] Furthermore, the electronic device of one embodiment of the present invention may include a secondary battery and may perform contactless power transmission. It is preferable that the secondary battery can be charged using the power supply.

[0267] As the secondary battery, for example, a lithium polymer battery (lithium ion battery) using a gel electrolyte is used. Lithium-ion secondary batteries such as lithium-ion polymer batteries, lithium-ion batteries, nickel-metal hydride batteries batteries, nickel-cadmium batteries, organic radical batteries, lead-acid batteries, secondary air batteries, nickel-zinc batteries, silver-zinc batteries Examples include lead batteries.

[0268] The electronic device according to one embodiment of the present invention may include an antenna. By using the battery, it is possible to display images, information, etc. on the display unit. , the antenna may be used for contactless power transfer.

[0269] 32(A), (B), (C1), (C2), (D), and (E) show a curved display unit 70. 7 shows an example of an electronic device having a display unit 7000. The display surface of the display unit 7000 is curved. The display can be performed along the curved display surface. It may be possible.

[0270] The display portion 7000 is manufactured using the display device, an input / output device, or the like of one embodiment of the present invention. According to one aspect of the present invention, it is possible to provide an electronic device that has a curved display and is highly reliable. Cut.

[0271] An example of a mobile phone is shown in FIG. 32A. A mobile phone 7100 includes a housing 7101, a display part 7000, operation button 7103, external connection port 7104, speaker 7105, microphone 7106 etc.

[0272] A mobile phone 7100 shown in FIG. 32A includes a touch sensor in a display portion 7000. All operations, such as making a call or entering text, can be performed using a finger or stylus. This can be done by touching the part 7000.

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

[0274] FIG. 32B shows an example of a television device. The television device 7200 has a housing 7 The display unit 7000 is built into the housing 7201. The configuration shown supports 201.

[0275] The television device 7200 shown in FIG. 32B is operated by an operation switch provided in the housing 7201. This can be done by a separate remote control 7211 or the display unit 70. The display unit 7000 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 device 7211 may display information to be output from the remote control operation device 7211. The remote control 7211 may have a display unit that displays the operation keys or touch panel. The panel allows the user to operate the channel and volume, and the information displayed on the display unit 7000 You can manipulate the video.

[0276] The television device 7200 includes a receiver, a modem, and the like. It is possible to receive general television broadcasts by using a modem. By connecting to a communication network, it can be one-way (sender to receiver) or two-way. It is also possible to communicate information (between a sender and a receiver, or between receivers).

[0277] Examples of portable information terminals are shown in Figures 32(C1), (C2), (D), and (E). The terminal includes a housing 7301 and a display portion 7000. Further, an operation button, an external connection port, The display unit 7000 may include a display, a speaker, a microphone, an antenna, a battery, etc. The mobile information terminal is operated by touching the display unit 700 with a finger or a stylus. This can be done by touching 0.

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

[0279] The portable information terminal exemplified in this embodiment may be, for example, a telephone, a notebook, an information viewing device, or the like. Specifically, each of these functions can be used as a smartphone. The portable information terminal exemplified in this embodiment may be, for example, a mobile phone, an electronic mail It can be used for various purposes such as browsing and creating documents, playing music, communicating over the Internet, and playing computer games. Various applications can be run.

[0280] The mobile information terminals 7300, 7310, and 7320 are used for displaying characters and images. Image information can be displayed on multiple surfaces. For example, the image information shown in Figure 32 (C1) and (D) can be displayed on multiple surfaces. As shown, three operation buttons 7302 are displayed on one side, and information 7303 shown as a rectangle is displayed on the other side. In Figures 32(C1) and 32(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. In addition, information may be displayed on three or more sides of the mobile information terminal. 304, information 7305, and information 7306 are displayed on different surfaces.

[0281] Examples of such information include notifications from social networking services (SNS). , display notifying you of incoming e-mails or phone calls, subject of e-mails or sender name , date and time, battery level, antenna reception strength, etc. 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 mobile information terminal 7300 may place the mobile information terminal 7300 in the breast pocket of his / her clothes. When the item is stored, the display (information 7303 in this example) can be confirmed.

[0283] Specifically, the telephone number or name of the caller of the incoming call is stored in the mobile information terminal 7300. The display is positioned so that it can be seen from above. You can check the display and decide whether to answer the call without having to take out your phone.

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

[0285] The light-emitting portion of each lighting device shown in FIGS. 32(F) to 32(H) is a display device according to one embodiment of the present invention. According to one aspect of the present invention, a light emitting device having a curved light emitting portion is manufactured using an input / output device or the like. This makes it possible to provide a lighting device with high reliability.

[0286] The lighting device 7400 shown in FIG. 32(F) includes a light-emitting unit 7402 having a wavy light-emitting surface. This makes it a highly designed lighting device.

[0287] The light-emitting portion 7412 of the lighting device 7410 shown in FIG. 32(G) has two convexly curved portions. Therefore, the light emitting units are arranged symmetrically around the lighting device 7410. It can illuminate in all directions.

[0288] The lighting device 7420 shown in FIG. 32(H) has a light-emitting portion 7422 that is curved in a concave shape. Therefore, the light emitted from the light emitting unit 7422 is focused on the front surface of the lighting device 7420. This type of lighting is suitable for illuminating a certain area. This has the effect of making it difficult to

[0289] In addition, the lighting devices 7400, 7410, and 7420 each have light emitting The light emitting part may be flexible. The light emitting part may be fixed by a member such as a plastic member or a movable frame. The light emitting surface of the light emitting part may be configured to be freely curved depending on the application.

[0290] The lighting device 7400, the lighting device 7410, and the lighting device 7420 each have an operation switch. It has a base 7401 with a switch 7403 and a light emitting unit supported by the base 7401.

[0291] Here, the illumination device in which the light-emitting unit is supported by the base is exemplified. The housing may be fixed to the ceiling or hung from the ceiling. The light surface can be curved, so the light-emitting surface can be curved concavely to brighten a specific area. The light source can be curved convexly to illuminate an entire room.

[0292] 33(A1), (A2), (B) to (I) show a display device having a flexible display unit 7001. 1 shows an example of a portable information terminal.

[0293] The display portion 7001 is manufactured using the display device, an input / output device, or the like of one embodiment of the present invention. For example, a display device that can be bent with a curvature radius of 0.01 mm or more and 150 mm or less, Alternatively, an input / output device or the like can be applied. Generally, the mobile information terminal can be operated by touching the display portion 7001 with a finger or the like. According to one aspect of the present invention, it is possible to provide an electronic device that has a flexible display unit and is highly reliable. do.

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

[0295] The portable information terminal 7500 has a flexible display unit rolled up in a housing 7501. It has 7001.

[0296] In addition, the mobile information terminal 7500 can receive video signals using a built-in control unit. The portable information terminal 7500 can display the captured image on the display unit 7001. The housing 7501 is equipped with a terminal for connecting a connector, The image signal and power may be supplied directly from the outside via wires.

[0297] In addition, the operation button 7503 can be used to turn the power on and off and to switch the displayed image. In addition, in Fig. 33 (A1), (A2), and (B), the mobile information terminal In this example, the operation button 7503 is arranged on the side of the mobile information terminal 7500. It may be placed on the same surface (front surface) as the display surface of the terminal 7500, or on the back surface.

[0298] FIG. 33B shows a mobile phone in a state where the display unit 7001 is pulled out by the pull-out member 7502. 7 shows a portable information terminal 7500. In this state, an image can be displayed on the display unit 7001. 33(A1) in which a part of the display unit 7001 is rolled up, and the state of the display unit 700 33(B) in which the portable information terminal 75 is pulled out by the pull-out member 7502. For example, in the state shown in FIG. 33(A1), By hiding the rolled-up part 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, 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 output.

[0301] Figures 33(C) to 33(E) show an example of a foldable mobile information terminal. In the unfolded state, in Figure 33(D), from either 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 is shown in FIG. 33(E). The portable information terminal 7600 is highly portable when folded and The seamless, large 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 portable information The terminal 7600 can be reversibly transformed from an unfolded state to a folded state.

[0303] Figures 33(F) and (G) show an example of a foldable mobile information terminal. In the state where the display unit 7001 is folded inward, FIG. The mobile information terminal 7650 is shown folded with the side 7001 facing outwards. The terminal 7650 has a display portion 7001 and a non-display portion 7651. When not in use, the display unit 7001 can be folded inward. This can prevent dirt and scratches.

[0304] FIG. 33(H) shows an example of a flexible portable information terminal. The device has a housing 7701 and a display portion 7001. , 7703b, speakers 7704a and 7704b as audio output means, and external connection port 7 The portable information terminal 7700 may have a flexible The battery 7709 may be mounted on the display unit 7. It may be placed overlapping with 001.

[0305] The housing 7701, the display portion 7001, and the battery 7709 are flexible. The portable information terminal 7700 can be bent into a desired shape or twisted. For example, the display portion 7001 of the portable information terminal 7700 is It can be folded outward and used. The display unit 700 can also be used in a rolled-up state. Since the portable information terminal 7700 can be freely deformed, it can be easily carried out even if it is dropped or has the advantage that it is less likely to break even if an unintended external force is applied.

[0306] In addition, since the portable information terminal 7700 is lightweight, the upper part of the housing 7701 can be held with a clip or the like. Or, the housing 7701 can be fixed to the wall with a magnet or the like. , and can be conveniently used in a variety of situations.

[0307] FIG. 33(I) shows an example of a wristwatch-type portable information terminal. The device has a keyboard 7801, a display unit 7001, an input / output terminal 7802, an operation button 7803, etc. 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 has various functions such as auto-start, silent mode activation and deactivation, power saving mode activation and deactivation, etc. 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 launch the application.

[0311] The portable information terminal 7800 can also 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. If the device has 802, it can directly exchange data with other information terminals via a connector. Charging can also be performed via the input / output terminal 7802. The charging operation of the mobile information terminal shown in the example is performed by non-contact power transmission without using input / output terminals. You may go.

[0313] Fig. 34(A) shows the exterior of the car 9700. Fig. 34(B) shows the driver's seat of the car 9700. The automobile 9700 includes a body 9701, wheels 9702, a dashboard 9703, a The display device or the input / output device of one embodiment of the present invention includes a vehicle 97 For example, the display unit 9710 shown in FIG. The display device or the input / output device of one embodiment of the present invention can be provided in the display portion 9715. .

[0314] The display portion 9710 and the display portion 9711 are display devices provided on a windshield of an automobile. The display device or the input / output device according to one embodiment of the present invention is a display device, Alternatively, electrodes of the input / output device may be formed using a light-transmitting conductive material. It can be used as a so-called see-through display device or input / output device, allowing you to see through to the other side. If it is a see-through display device or an input / output device, it is possible to Therefore, the display device or input device according to one embodiment of the present invention does not obstruct the view even when driving. The output device can be installed on the windshield of the automobile 9700. Or, in the input / output device, a display device or a transistor for driving the input / output device, etc. When provided, an organic transistor using an organic semiconductor material or a transistor using an oxide semiconductor is used. A light-transmitting transistor such as a transistor is preferably used.

[0315] The display portion 9712 is a display device or an input / output device provided in a pillar portion. By displaying an image from an imaging means provided on the vehicle body on the display unit 9712, The display unit 9713 is installed in the dashboard. For example, the image captured by the imaging means provided on the vehicle body is By projecting the image onto the display unit 9713, it complements the view blocked by the dashboard. That is, it is possible to project an image from an imaging means provided on the outside of the automobile. This can compensate for blind spots and increase safety. By projecting the image, safety checks can be performed more naturally and without any discomfort.

[0316] FIG. 34(C) shows the interior of a car with bench seats for the driver and passenger. The display unit 9721 is a display device or an input / output device provided in the door. For example, by displaying an image from an imaging means provided on the vehicle body on the display unit 9721, It can complement the view blocked by the door. The display unit 9723 is a display device or an input / output device mounted on the seat surface of the bench seat. The display device or input / output device is provided in the center. The display device or input / output device is installed on the seat or backrest of the chair. It can also be used as a seat heater using the heat generated by the device or input / output device as a heat source. .

[0317] The display unit 9714, the display unit 9715, or the display unit 9722 displays navigation information, speech such as the odometer, tachometer, mileage, fuel level, gear status, and air conditioning settings. It is also possible to provide various other information. The above information can be changed as needed to suit the user's preferences. The images can also be displayed on the display units 9710 to 9713, the display unit 9721, and the display unit 9723. In addition, the display units 9710 to 9715 and the display units 9721 to 9723 are illuminated. The display units 9710 to 9715 can also be used as a lighting device. The portion 9721 to the display portion 9723 can also be used as a heating device.

[0318] The display device of one embodiment of the present invention or the display portion to which the input / output device is applied may be flat. In this case, the display device or the input / output device of one embodiment of the present invention does not have a curved surface or flexibility. It may have a different configuration.

[0319] The portable game machine shown in FIG. 34(D) includes a housing 901, a housing 902, a display portion 903, and a display part 904, microphone 905, speaker 906, operation keys 907, stylus 908 etc.

[0320] 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 embodiment of the present invention is not limited to two and may be one. If an electronic device has multiple display units, it must have at least The display device or the input / output device of one embodiment of the present invention may be included in one display portion.

[0321] FIG. 34(E) shows a notebook personal computer, which includes a housing 921, a display unit 922, It has a keyboard 923, a pointing device 924, and the like.

[0322] The display device or the input / output device of one embodiment of the present invention can be applied to the display portion 922. do.

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

[0324] The coupling portion 8005 has electrodes and is connected to the finder 8100 (to be described later) as well as the strobe device. etc. can be connected.

[0325] Here, the camera 8000 is assumed to have a lens 8006 that is detached from the housing 8001 and replaced. However, the lens 8006 and the housing may be integrated.

[0326] An image can be taken by pressing the shutter button 8004. 8002 has a function as a touch panel, and an image is taken by touching the display unit 8002. It is also possible to do this.

[0327] The display device or the input / output device of one embodiment of the present invention can be applied to the display portion 8002. Cut.

[0328] FIG. 35(B) shows an example in which a finder 8100 is attached to a camera 8000. is doing.

[0329] The finder 8100 includes 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. A viewfinder 8100 can be attached to the camera 8000. The device has electrodes, and displays images received from a camera 8000 via the electrodes on a display unit 8102. It can be shown.

[0331] The button 8103 functions as a power button. The 8102 display can be switched on and off.

[0332] The display device or the input / output device of one embodiment of the present invention can be applied to the display portion 8102. Cut.

[0333] In addition, in Figures 35(A) and (B), the camera 8000 and the finder 8100 are separate electronic devices. The camera 8000 is configured to have a detachable structure. The display device may have a built-in finder equipped with one of the display devices or the input / output device.

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

[0335] The head-mounted display 8200 includes a mounting part 8201, a lens 8202, and a main body 82 8203, a display unit 8204, a cable 8205, etc. It has a built-in 8206 battery.

[0336] A cable 8205 supplies power from a battery 8206 to the main body 8203. 03 is equipped with a wireless receiver and the like, and image information such as received image data is displayed on a display unit 8204. In addition, the camera installed in the main body 8203 can record the movements of the user's eyeballs and eyelids. By capturing the user's viewpoint and calculating the coordinates of the user's viewpoint based on that information, It can be used as an input means.

[0337] Furthermore, the wearing unit 8201 may be provided with a plurality of electrodes at positions that come into contact with the user. The main body 8203 detects the current flowing through the electrodes in accordance with the movement of the user's eyeballs, The device may have a function to recognize the user's point of view. By doing so, the attachment unit 820 may have a function of monitoring the pulse of the user. The sensor 1 may have various sensors such as a temperature sensor, a pressure sensor, an acceleration sensor, etc. The device may have a function to display the user's biological information on the display unit 8204. The image displayed on the display unit 8204 is changed according to the movement of the part. Good too.

[0338] The display device or the input / output device of one embodiment of the present invention can be applied to the display portion 8204. Cut.

[0339] This embodiment may be combined, at least in part, with other embodiments described in this specification. It can be implemented in combination. [Explanation of symbols]

[0340] 10 Input Devices 21 Straight section 22 Straight section 30 boards 31 electrode 32 electrodes 33 electrode 34 Bridge electrode 35 Dummy electrode 36 electrodes 37 electrode 38 Intersection 40 pixels 40a pixels 40b pixels 40c pixels 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 PCB 72 PCB 73 FPC 74 IC 80 directions 81 Display section 82 Drive circuit 83 Wiring 86 Intersection 87 scan lines 87a scan line 87b scan line 87c scan line 90 Intersection 91 Circuit Board 92 Adhesive layer 93 PCB 94 Insulating Layer 100 Touch Panel 106 Connection 106a Connection 106b Connection 109 Connection Layer 109a Connection Layer 109b Connection Layer 111 Substrate 112 PCB 113 Substrate 114 Circuit Board 130 Protection Board 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 PCB 192 Adhesive layer 193 PCB 194 Insulating Layer 201 Transistor 202 Transistor 203 Transistor 205 Capacitor 206 Connection 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 Colored layer 232 Light blocking layer 233 Insulating Layer 234 Insulating Layer 241 Conductive Layer 242 Semiconductor layer 243 Conductive Layer 244 Conductive Layer 251 Electrode 252 Electrode 253 LCD 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 Case 902 Case 903 Display section 904 Display section 905 Microphone 906 Speaker 907 Operation Key 908 Stylus 921 Case 922 Display section 923 keyboard 924 Pointing Device 3501 Wiring 3502 Wiring 3503 Transistor 3504 Liquid crystal elements 3510 Wiring 3510_1 Wiring 3510_2 Wiring 3511 Wiring 3515_1 Block 3515_2 Block 3516 blocks 7000 Display 7001 Display section 7100 Mobile Phone 7101 Housing 7103 Operation button 7104 External connection port 7105 Speaker 7106 Microphone 7200 Television Equipment 7201 Case 7203 Stand 7211 Remote control device 7300 Mobile Information Terminal 7301 Housing 7302 Operation button 7303 Information 7304 Information 7305 Information 7306 Information 7310 Mobile Information Terminals 7320 Mobile Information Terminal 7400 Lighting Equipment 7401 Daibu 7402 Light-emitting part 7403 Operation switch 7410 Lighting equipment 7412 Light-emitting part 7420 Lighting equipment 7422 Light-emitting part 7500 Mobile Information Terminal 7501 Case 7502 Materials 7503 Operation button 7600 Personal Digital Assistant 7601 Case 7602 Hinge 7650 Personal Digital Assistant 7651 Hidden part 7700 Personal Digital Assistant 7701 Housing 7703a Button 7703b Button 7704a Speaker 7704b Speaker 7705 External connection port 7706 Mike 7709 Battery 7800 Mobile Information Terminal 7801 band 7802 Input / output terminal 7803 Operation button 7804 Icons 7805 Battery 8000 Camera 8001 Case 8002 Display section 8003 Operation button 8004 Shutter button 8005 Joint 8006 Lens 8100 Finder 8101 Housing 8102 Display section 8103 Button 8200 Head Mounted Display 8201 Mounting part 8202 Lens 8203 Main unit 8204 Display section 8205 Cable 8206 Battery 9700 Automobiles 9701 Body 9702 wheels 9703 Dashboard 9704 Light 9710 Display section 9711 Display section 9712 Display section 9713 Display section 9714 Display section 9715 Display section 9721 Display section 9722 Display section 9723 Display section

Claims

1. A display device having a display unit having a plurality of scanning lines and a plurality of EL elements, and a touch sensor located on the display unit, a conductive layer that functions as an electrode of the touch sensor; the conductive layer has a plurality of openings each having a polygonal shape with rounded corners in a plan view; At least one of the openings overlaps with one light-emitting region of the plurality of EL elements in a plan view, each of the plurality of scanning lines has an area extending in a direction intersecting the longitudinal direction of the display unit; the conductive layer has a region in which an angle formed between an extension direction of one side of the polygonal shape and an extension direction of one of the plurality of scanning lines is 30 degrees or more and 60 degrees or less in a plan view; one light-emitting region of the plurality of EL elements does not overlap with the conductive layer; A display device, wherein, in a plan view, one of the plurality of EL elements and one of the other EL elements adjacent to the one of the plurality of EL elements are arranged along an extension direction of one side of the polygonal shape.

2. A display device having a display unit having a plurality of scanning lines and a plurality of EL elements, and a touch sensor located on the display unit, a conductive layer that functions as an electrode of the touch sensor; the conductive layer has a plurality of openings each having a polygonal shape with rounded corners in a plan view; At least one of the openings overlaps with one light-emitting region of the plurality of EL elements in a plan view, each of the plurality of scanning lines has an area extending in a direction intersecting the longitudinal direction of the display unit; the conductive layer has a region in which an angle formed between an extension direction of one side of the polygonal shape and an extension direction of one of the plurality of scanning lines is 30 degrees or more and 60 degrees or less in a plan view; one light-emitting region of the plurality of EL elements does not overlap with the conductive layer; In a plan view, one of the plurality of EL elements and one of the other EL elements adjacent to the one of the plurality of EL elements are arranged along an extension direction of one side of the polygonal shape, the display unit has a plurality of pixels, At least one of the pixels includes 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.

3. In claim 1 or 2, The display device, wherein one of the plurality of EL elements and one of the other EL elements adjacent to the one of the plurality of EL elements exhibit different colors from each other.

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