JP6534807B2 - Electrode for touch sensor, touch panel, and display device - Google Patents

Description

  The present invention relates to a touch sensor electrode, a touch panel, and a display device, wherein each of a plurality of electrodes includes a plurality of electrode lines.

  Touch panels are widely used as input devices for electronic devices. The touch panel includes a transparent dielectric layer having a first surface and a second surface, and on the first surface of the transparent dielectric layer, a plurality of first electrodes having a band shape extending along the X direction are positioned On the second surface of the transparent dielectric layer, a plurality of second electrodes having a band shape extending along the Y direction orthogonal to the X direction are located. In the touch panel, a change in capacitance between one first electrode and each of the plurality of second electrodes is detected for each first electrode, and the position of the finger on the operation surface of the touch panel is detected. As a material for forming the first electrode and the second electrode, a metal such as silver or copper is used to reduce the resistance value of each electrode (see, for example, Patent Document 1).

JP, 2013-156725, A

  Incidentally, each of the plurality of electrodes constituting the touch panel is required to have light transmittance for outputting an image on the operation surface of the touch panel, in addition to conductivity for detecting a change in capacitance. Each of the plurality of electrodes is configured as a set of a plurality of electrode lines arranged at intervals from each other, and has the above-described light transmittance in the gap between the electrode lines adjacent to each other.

  In general, the touch panel is touch-operated using a finger or a stylus pen. It is known that when a stylus pen is used, the change in capacitance is smaller than when touched with a finger.

  If a crack is formed due to an etching failure or the like in the electrode wire that constitutes the electrode, the crack portion may be broken while the touch panel is repeatedly used. Since the opposite end portions are close to each other at the broken portion, repetition of electrical connection or non-connection between the end portions occurs depending on the use condition. When electrical connection or disconnection between the end portions occurs, the capacitance changes even if the user does not actually touch the finger or the stylus pen. When a change in electrostatic capacitance occurs at the broken portion, the detection circuit of the touch panel detects the change in electrostatic capacitance, and determines that the touch operation has been performed at that position. When the threshold value of the capacitance change amount is set low so that the touch operation with the stylus pen can be detected, the capacitance change exceeds the threshold value even though the touch operation is not actually performed by the user. False detection may occur.

  An object of this invention is to provide the electrode for touch sensors which can suppress a misdetection, a touch panel, and a display apparatus.

  An electrode for a touch sensor, which solves the problems as described above, has a band shape extending along a first electrode direction which is one direction, and a second electrode direction which intersects the first electrode direction. A plurality of first electrodes arranged along a first gap with a band shape extending along the direction of the second electrode, and arranged along a direction of the first electrode with a second gap separated, And a plurality of second electrodes that three-dimensionally intersect with the plurality of first electrodes. Each of the plurality of first electrodes includes a plurality of first main lines which are line segments having a straight line shape extending along a first line direction which is one direction, and a direction which intersects the first line direction And a plurality of first minor lines which are line segments having a linear shape extending along the two-line direction. Further, each of the plurality of second electrodes has a plurality of second main lines, which are line segments having a linear shape extending along the second linear direction, and a linear shape extending along the first linear direction. And a plurality of second minor lines that are line segments. The plurality of first main lines, the plurality of first sub-lines, the plurality of second main lines, and the second sub-line have a rectangular shape in plan view facing the plane including the plurality of second electrodes. Construct a grid pattern that is a repetition of the unit cell that it has. Each of the first electrodes has a plurality of first intersections formed by the intersection of the first main line and the first sub-line, and each of the second electrodes is formed of the second main line and the second line. It has a plurality of second intersections formed by intersections with minor lines. At least one of the plurality of first main lines and the plurality of first minor lines includes a first terminal line segment extending forward from the first intersection, and the plurality of second major lines and the plurality of second minor lines And at least one of the second end line segments extending forward from the second intersection point. The lengths of the first end segment and the second end segment in a region of 70% or more of the entire detection region, which is a region where the first electrode and the second electrode three-dimensionally intersect, When one side of the unit cell is one pitch, the length is equal to or less than two pitches.

  According to the configuration as described above, the lengths of the first end line segment and the second end line segment are equal to or less than two pitches when one side of the unit lattice is one pitch. Therefore, even if disconnection occurs at portions of the first intersection and the second intersection and connection or non-connection of the end portions frequently occurs, the change in capacitance at that time can be reduced. Therefore, false detection can be suppressed.

  In the touch panel, at least one of the first terminal line segments of the first minor line intersecting with the first main line whose end faces the first gap of the first electrode, and the end are It is preferable that at least one of at least one of the second end line segments of the second minor line intersecting the second main line facing the second gap of the second electrode has a length of 2 pitch or less .

  In the touch panel, portions overlapping each other between the plurality of first electrodes and the plurality of second electrodes are a capacitance detection unit. Then, at least one of the first terminal line segments at both ends of the first main line straddling two adjacent capacitance detection portions and the second main line straddling two adjacent capacitance detection portions It is preferable that at least one of at least one of the second terminal line segments at both ends has a length of 2 pitches or less.

  In the touch panel, further, at least one of the first end segment at both ends of at least one of the first sub-lines and the second end segment at both ends of the at least one second sub-line It is preferable that at least one of at least one has a length of 2 pitches or less.

In the touch panel, it is preferable that an area of 70% or more of the entire detection area is configured by an area excluding an outer peripheral portion of the detection area.
In the configuration as described above, the area other than the outer peripheral portion is the area to be touch-operated by the user. In this area, the detection sensitivity needs to be increased, and the possibility of erroneous detection also increases accordingly. Therefore, in the region excluding the outer peripheral portion, the lengths of the first end segment and the second end segment are set to two or less pitches, and even when disconnection occurs, the change in capacitance becomes small. Let's do it.

In the touch panel, preferably, lengths of the plurality of first end line segments and the plurality of second end line segments are equal to or less than one pitch.
Preferably, the lengths of the plurality of first end line segments and the plurality of second end line segments are equal to or less than a half pitch.
In the touch panel, preferably, the unit cell is a square.

  Moreover, the touch panel which solves the above subjects is the transparent dielectric material layer pinched | interposed between several 1st electrodes, several 2nd electrodes, several said 1st electrodes, and several said 2nd electrodes. And a cover layer for covering the touch sensor electrode, and a peripheral circuit for measuring a capacitance between the first electrode and the second electrode. The touch sensor electrode is configured of the touch sensor electrode as described above.

  Moreover, the display apparatus which solves the above subjects is provided with the display panel which displays information, the touch panel which permeate | transmits the said information which the said display panel displays, and the drive circuit which drives the said touch panel. And the said touch panel is comprised by the above touch panels.

  According to the configuration as described above, erroneous detection can be suppressed even when the electrode wire is broken.

It is a top view which shows the planar structure of the display apparatus in 1st Embodiment which actualized this invention, Comprising: It is a top view shown notches in order of which some mutually different components overlap. It is sectional drawing which shows the cross-section of the display apparatus in 1st Embodiment. It is a block diagram for demonstrating the electric constitution of the touch panel in 1st Embodiment. FIG. 6 is a partial plan view showing a planar structure of a portion of a drive electrode in the first embodiment. (A) is a top view which shows the state in which the crack was formed in the terminal line segment of the intersection of a drive main line and a drive subline, (b) is a top view which shows the state disconnected in the part of a crack. is there. It is a fragmentary top view showing the plane structure of a part of sensing electrode in a 1st embodiment. It is a top view which shows the planar structure of the drive electrode in 1st Embodiment, and a sensing electrode, Comprising: The relationship of the position of a drive electrode and the position of a sensing electrode is shown. It is a top view which shows the display surface of a display panel. It is a fragmentary top view showing plane structure of a part of drive electrode in a 2nd embodiment. It is a fragmentary top view showing the plane structure of a part of sensing electrode in a 2nd embodiment. It is a top view which shows the planar structure of the drive electrode in 2nd Embodiment, and a sensing electrode, Comprising: The relationship of the position of a drive electrode and the position of a sensing electrode is shown. It is a fragmentary top view showing plane structure of a part of drive electrode in a 3rd embodiment. It is a top view which shows the planar structure of the drive electrode in 3rd Embodiment, and a sensing electrode, Comprising: It is a top view which shows the relationship between the position of a drive electrode, and the position of a sensing electrode. It is a partial top view which shows the planar structure of a part of drive electrode in 4th Embodiment. It is a fragmentary top view showing the plane structure of a part of sensing electrode in a 4th embodiment. It is a top view which shows the planar structure of the drive electrode and sensing electrode in 4th Embodiment, Comprising: It is a top view which shows the relationship between the position of a drive electrode, and the position of a sensing electrode. It is sectional drawing which shows the cross-section of the display apparatus in a 1st modification. It is sectional drawing which shows the cross-section of the display apparatus in a 2nd modification.

First Embodiment
The touch sensor electrode, the touch panel, and the display device according to the first embodiment will be described with reference to FIGS. 1 to 6. Hereinafter, the configuration of the display device, the electrical configuration of the touch panel, the configuration of the drive electrode, and the configuration of the sensing electrode will be described.

[Plane structure of display device]
The configuration of the display device will be described with reference to FIG. Note that FIG. 1 exaggerates the black matrix, the drive electrode, and the sensing electrode for convenience of describing the configurations of the black matrix, the drive electrode, and the sensing electrode included in the display device. Moreover, the drive electrode wire which comprises a drive electrode, and the sensing electrode wire which comprises a sensing electrode are shown typically.

  As shown in FIG. 1, the display device includes, for example, a display panel 10 which is a liquid crystal panel, and a touch panel 20. The display panel 10 and the touch panel 20 are laminated by one transparent adhesive layer. The display device further includes a drive circuit for driving the touch panel 20.

  On the surface of the display panel 10, a rectangular display area 10S is partitioned, and in the display area 10S, information such as an image based on image data from the outside is displayed. The transparent adhesive layer may be omitted as long as the relative position between the display panel 10 and the touch panel 20 is fixed by another structure such as a housing. The touch panel 20 is bonded to the display area 10S. Then, a wider area including the display area 10S is a detection area 10D for detecting that the touch panel 20 is touched by a finger or a stylus pen. The detection area 10D is an area where drive electrode lines and sensing electrode lines intersect in a three-dimensional manner.

  The display panel 10 includes a color filter layer 15. The black matrix 15a of the color filter layer 15 has a plurality of rectangular shapes aligned along a first electrode direction D1 which is one direction and a second electrode direction D2 which is a direction orthogonal to the first electrode direction D1. It has a grid pattern composed of unit grids. One pixel 15P is composed of three unit grids continuous along the second electrode direction D2, and the plurality of pixels 15P are aligned along the first electrode direction D1 and the second electrode direction D2.

  Each of the plurality of pixels 15P includes a red coloring layer 15R for displaying red, a green coloring layer 15G for displaying green, and a blue coloring layer 15B for displaying blue. In the color filter layer 15, for example, a plurality of red coloring layers 15R, a plurality of green coloring layers 15G, and a plurality of blue coloring layers 15B are repeatedly arranged in this order along the second electrode direction D2 There is.

  One red coloring layer 15R, one green coloring layer 15G, and one blue coloring layer 15B constitute one pixel 15P, and the plurality of pixels 15P are red coloring layer 15R in the second electrode direction D2, green The color layers 15G and the blue color layers 15B are arranged along the second electrode direction D2 while maintaining the order in which they are arranged.

  The width along the second electrode direction D2 in the pixel 15P is a first pixel width WP1, and the width along the first electrode direction D1 in the pixel 15P is a second pixel width WP2, and each colored layer 15R, 15G, 15B The width along the first electrode direction D1 in the third pixel width is the third pixel width WP3. Each of the first pixel width WP1, the second pixel width WP2, and the third pixel width WP3 is set to a value according to the resolution or the like required for the display device.

  When the display panel 10 is an EL panel that outputs colored light, red pixels that output red light, green pixels that output green light, and blue pixels that output blue light are included. Have. Therefore, the color filter layer 15 described above can be omitted. At this time, the boundary between adjacent pixels in the EL panel functions as a black matrix.

  The touch panel 20 is a capacitive touch panel, is a laminate in which the touch sensor electrode 21 and the cover layer 22 are bonded by the transparent adhesive layer 23, and transmits light transmitted through the information displayed on the display panel 10. Have sex. The cover layer 22 is formed of a glass substrate, a resin film, or the like. The surface of the cover layer 22 opposite to the transparent adhesive layer 23 is the operation surface 20S of the touch panel 20. For the transparent adhesive layer 23, an adhesive such as, for example, a polyether adhesive or an acrylic adhesive that transmits an image displayed in the display area 10S is used.

  The transparent substrate 31 constituting the touch sensor electrode 21 is light transmissive to be superimposed on the entire display area 10S formed in the display panel 10 and to transmit information such as an image displayed by the display area 10S. . The transparent substrate 31 may be, for example, a single-layered structure composed of one substrate, such as a transparent glass substrate or a transparent resin film, or two or more substrates may be stacked. It may be a multilayer structure.

  The surface of the transparent substrate 31 opposite to the display panel 10 is set as a drive electrode surface 31S. In drive electrode surface 31S of transparent substrate 31, each of drive electrodes 31DP has a band shape extending along second electrode direction D2 which is one direction, and is orthogonal to second electrode direction D2 The first gaps 39 are spaced apart along the one electrode direction D1. The drive electrode 31DP is an example of a first electrode.

  Each drive electrode 31DP is a set of drive electrode lines, and the drive electrode lines include a drive main line which is an example of a first main line, and a drive subline which is an example of a first subline. A metal film such as copper or aluminum is used as a forming material of each drive electrode 31DP. Alternatively, a composite material containing metal oxide films such as zinc oxide, and metal oxides such as indium tin oxide or indium gallium zinc oxide such as indium, tin, gallium, and zinc as materials for forming each drive electrode 31DP. An oxide film is used. In addition, a conductive film such as a silver nanowire, a conductive polymer film, or a graphene film is also used as a forming material of each drive electrode 31DP. Each of the plurality of drive electrodes 31DP is individually connected to the selection circuit via the drive pad 31P, and is selected by the selection circuit by receiving a drive signal output from the selection circuit.

  A plurality of drive electrodes 31DP and a portion of the drive electrode surface 31S where the drive electrodes 31DP are not located are bonded to the transparent dielectric substrate 33 by one transparent adhesive layer 32. The transparent adhesive layer 32 is light transmissive to transmit information such as an image displayed in the display area 10S, and bonds the drive electrode surface 31S, the plurality of drive electrodes 31DP, and the transparent dielectric substrate 33. For the transparent adhesive layer 32, for example, a polyether adhesive or an acrylic adhesive is used. The transparent dielectric substrate 33 is an example of a transparent dielectric layer, and a plurality of drive electrodes 31DP are arranged on the back surface of the transparent dielectric substrate 33 facing the transparent substrate 31.

  The transparent dielectric substrate 33 is made of, for example, a base material such as a transparent resin film such as polyethylene terephthalate or a transparent glass substrate. The transparent dielectric substrate 33 may have a single-layer structure composed of one base material, or may have a multilayer structure in which two or more base materials are stacked. The transparent dielectric substrate 33 has light transmittance for transmitting information such as an image displayed in the display area 10S, and a dielectric constant suitable for detection of capacitance between the electrodes.

  The surface of the transparent dielectric substrate 33 opposite to the transparent adhesive layer 32 is set as a sensing electrode surface 33S. A plurality of sensing electrodes 33SP are provided on the sensing electrode surface 33S of the transparent dielectric substrate 33. Each of the plurality of sensing electrodes 33SP has a band shape extending along the first electrode direction D1, and is arranged with a second gap 43 therebetween along the second electrode direction D2 orthogonal to the first electrode direction D1. It is. The sensing electrode 33SP is an example of a second electrode.

  Each sensing electrode 33SP is a set of sensing electrode lines, and the sensing electrode lines include a sensing main line which is an example of a second main line, and a sensing subline which is an example of a second subline. A metal film such as copper or aluminum is used as a forming material of each sensing electrode 33SP. Alternatively, a composite material containing metal oxide films such as zinc oxide, and metal oxides such as indium tin oxide or indium gallium zinc oxide such as indium tin, gallium, and zinc as materials for forming each sensing electrode 33SP. An oxide film is used. In addition, a conductive film such as a silver nanowire, a conductive polymer film, and a graphene film is also used as a forming material of each sensing electrode 33SP. Each of the plurality of sensing electrodes 33SP is individually connected to the detection circuit via the sensing pad 33P, and the current value is measured by the detection circuit.

  The plurality of sensing electrodes 33SP and a portion of the sensing electrode surface 33S where the sensing electrodes 33SP are not located are bonded to the cover layer 22 by the transparent adhesive layer 23 described above.

  In a plan view opposed to a plane including a plurality of sensing electrodes 33SP, portions overlapping each other between drive electrode 31DP and sensing electrodes 33SP are capacitance detection portions ND having a rectangular shape shown by a two-dot chain line in FIG. . One capacitance detection unit ND is a portion where one drive electrode 31DP and one sensing electrode 33SP intersect in a three-dimensional manner, and detects a position touched by a user's finger, a stylus pen or the like on the touch panel 20 The smallest possible unit of

[Cross-sectional structure of display device]
As shown in FIG. 2, in the touch panel 20, the transparent substrate 31, the drive electrode 31DP, the transparent adhesive layer 32, the transparent dielectric substrate 33, the sensing electrode 33SP, the transparent adhesive layer 23, in order from the components closer to the display panel 10. A cover layer 22 is located. Among these, the transparent dielectric substrate 33 is sandwiched between a plurality of drive electrodes 31DP and a plurality of sensing electrodes 33SP.

  The transparent adhesive layer 32 covers the periphery of each drive electrode line constituting the drive electrode 31DP, and fills the space between the drive electrode lines adjacent to each other, so as to be between the drive electrode 31DP and the transparent dielectric substrate 33. It is located in In addition, the transparent adhesive layer 23 covers the periphery of each sensing electrode line constituting the sensing electrode 33SP, and fills the space between the sensing electrode lines adjacent to each other, so as to be located between the sensing electrode 33SP and the cover layer 22. doing. In these components, at least one of the transparent adhesive layer 23 and the transparent substrate 31 may be omitted.

  In addition, the display panel 10 includes, in order from the components farther from the touch panel 20, the lower polarizing plate 11, the thin film transistor (hereinafter, TFT) substrate 12, the TFT layer 13, the liquid crystal layer 14, the color filter layer 15, the color filter substrate 16, The upper polarizer 17 is located. Among these, in the TFT layer 13, pixel electrodes constituting sub-pixels are located in a matrix. The black matrix 15a in the color filter layer 15 divides a plurality of regions having a rectangular shape facing each of the sub-pixels. In each of the divided regions of the black matrix 15a, the above-described colored layer is located which converts white light into light of any of red, green and blue.

  In the configuration in which the transparent adhesive layer 23 is omitted, the surface facing the transparent dielectric substrate 33 in the surface of the cover layer 22 is set as the sensing electrode surface 33S. The sensing electrode surface 33S has a plurality of sensing electrodes 33SP formed by patterning one thin film formed on the sensing electrode surface 33S.

  In addition, when manufacturing the touch panel 20, a method in which the touch sensor electrode 21 and the cover layer 22 are pasted together by the transparent adhesive layer 23 may be employed. In addition, the following manufacturing method may be adopted for the touch panel 20 as another example different from such a manufacturing method. That is, a thin film layer made of a conductive metal such as copper is formed directly on the cover layer 22 such as a resin film or via an underlayer, and the pattern shape of the sensing electrode 33SP is on the thin film layer. The resist layer is formed. Next, the thin film layer is processed into a plurality of sensing electrodes 33SP by a wet etching method using ferric chloride or the like to obtain a first film. Further, similarly to the sensing electrode 33SP, the thin film layer formed on the other resin film is processed into a plurality of drive electrodes 31DP to obtain the second film. Then, the first film and the second film are attached to the transparent dielectric substrate 33 by the transparent adhesive layer so as to sandwich the transparent dielectric substrate 33.

[Electric configuration of touch panel]
The electrical configuration of the touch panel 20 will be described with reference to FIG. In the following, as an example of the capacitive touch panel 20, the electrical configuration of the mutual capacitive touch panel 20 will be described.

  As shown in FIG. 3, the touch panel 20 includes a selection circuit 34, a detection circuit 35, and a controller 36. The selection circuit 34 is connected to the plurality of drive electrodes 31DP, the detection circuit 35 is connected to the plurality of sensing electrodes 33SP, and the controller 36 is connected to the selection circuit 34 and the detection circuit 35.

  The controller 36 generates and outputs a start timing signal for causing the selection circuit 34 to start generation of a drive signal for each drive electrode 31DP. The controller 36 generates and outputs a scan timing signal for causing the selection circuit 34 to sequentially scan the target to which the drive signal is supplied from the first drive electrode 31DP to the nth drive electrode 31DP.

  The controller 36 generates and outputs a start timing signal for causing the detection circuit 35 to start detection of the current flowing through each sensing electrode 33SP. The controller 36 generates and outputs a scan timing signal for causing the detection circuit 35 to sequentially scan the detection target from the first sensing electrode 33SP to the n-th sensing electrode 33SP.

  The selection circuit 34 starts generation of the drive signal based on the start timing signal output from the controller 36. Then, based on the scan timing signal output from the controller 36, the output destination of the drive signal is scanned from the first drive electrode 31DP1 toward the nth drive electrode 31DPn.

  The detection circuit 35 includes a signal acquisition unit 35 a and a signal processing unit 35 b. The signal acquiring unit 35a starts acquiring a current signal, which is an analog signal generated in each sensing electrode 33SP, based on the start timing signal output from the controller 36. The signal acquisition unit 35a scans the acquisition source of the current signal from the first sensing electrode 33SP1 toward the n-th sensing electrode 33SPn based on the scan timing signal output from the controller 36.

  The signal processing unit 35 b processes each current signal acquired by the signal acquisition unit 35 a to generate a voltage signal that is a digital value, and outputs the generated voltage signal to the controller 36. The selection circuit 34 and the detection circuit 35 generate a voltage signal from the current signal that changes in accordance with the change in capacitance, thereby measuring the change in capacitance between the drive electrode 31DP and the sensing electrode 33SP. The selection circuit 34 and the detection circuit 35 are examples of peripheral circuits.

  The controller 36 detects a position touched by the user's finger or a stylus pen on the touch panel 20 based on the voltage signal output from the signal processing unit 35 b. The touch panel 20 is not limited to the mutual capacitance touch panel 20 described above, but may be a self-capacitance touch panel.

[Configuration of Drive Electrode 31DP]
The configuration of the drive electrode will be described with reference to FIG. In FIG. 4, for convenience of describing the arrangement of a plurality of drive electrode lines constituting drive electrode 31DP, a portion constituting four capacitance detection portions ND among two drive electrodes 31DP is shown enlarged and The line widths of the electrode lines are exaggerated.

  As shown in FIG. 4, each of the plurality of drive electrodes 31DP includes a plurality of drive main lines 31ML and a plurality of drive sub lines 31SL. A plurality of drive sub lines 31SL cross one drive sub line 31SL, and a plurality of drive main lines 31 ML cross one drive sub line 31SL. The drive main line 31ML and the drive sub line 31SL intersect with each other to form at least one L shape, an inverted L shape, a cross, or the like.

  Each of the plurality of drive main lines 31ML is a line segment having a linear shape extending along the first linear direction DL1 between the first electrode direction D1 and the second electrode direction D2. A part of the plurality of drive main lines 31ML is a line segment straddling two capacitance detection portions ND adjacent to each other in the second electrode direction D2. Further, a part of the drive main line 31ML is a line segment that is interrupted between the capacitance detection portions ND adjacent to each other in the first electrode direction D1.

  In addition, drive main line 31ML is spaced in the second line direction DL2 from the minimum main line interval WM in the second line direction DL2 between the first electrode direction D1 and the second electrode direction D2 with an interval 3WM three times that. Lined along. That is, the drive main lines 31ML are provided in parallel with one another at main line intervals WM, and are provided in parallel with one another at main line intervals 2WM twice as high as the main line intervals WM. There are those which are provided in parallel with each other with a main line interval 3 WM three times larger.

  The plurality of drive sub lines 31SL are line segments having a linear shape extending along the second line direction DL2. The angle θ1 formed between the second linear direction DL2 and the second electrode direction D2 is 0 ° or more and less than 90 °, and the angle θ2 formed between the first linear direction DL1 and the first electrode direction D1 is 0. It is more than 90 °. The first linear direction DL1 and the second linear direction DL2 are directions intersecting with each other, and in FIG. 4, the angle θ1 and the angle θ2 are 66.04 °, and the first linear direction DL1 The angle formed with the second linear direction DL2 is 90 degrees. A part of the plurality of drive sub lines 31SL is a line segment that is interrupted between the capacitance detection portions ND adjacent to each other in the first electrode direction D1. For example, a part of the plurality of drive sub lines 31SL is arranged along the first line direction DL1 at an interval 5 WS that is five times the minimum sub line distance WS in the first line direction DL1. That is, drive sub lines 31SL are provided in parallel with each other at an interval of WS, 2WS, 3WS, 4WS, and 5WS.

  Each of the plurality of drive sub lines 31SL connects the plurality of drive main lines 31ML in parallel. Each of the plurality of drive sub lines 31SL connects the plurality of drive main lines 31ML in parallel, and the number of drive main lines 31ML is larger than the number of drive sub lines 31SL connecting the plurality of drive main lines 31ML in parallel. A plurality of drive sub-lines 31SL connecting a plurality of drive main lines 31ML in parallel is included for each one capacitance detection unit ND. Therefore, for example, as shown by a white circle in FIG. 4, even if a disconnection occurs in a part of drive main line 31ML, a drive circle 31SL and drive main line 31ML next to the disconnected drive main line 31ML are used to form a white circle. A transmission path is formed that bypasses. Then, in the transmission path of the drive electrode 31DP, in the portion excluding the detoured portion, a resistance value substantially the same as that in the normal state is obtained. As a result, the resistance value of drive electrode 31DP is increased by the increase of the resistance value of a portion of the drive electrode line as compared with the configuration in which the drive electrode line has only a straight line segment extending along the second electrode direction D2. The increase can be suppressed.

  Further, a part of the plurality of drive main lines 31ML has a first main line terminal line segment 38a extending earlier from the first intersection point 37 where the drive main line 31ML and the drive sub line 31SL intersect. In addition, a part of the plurality of drive sub-lines 31SL has a first sub-line terminal line segment 38b extending forward from the first intersection 37. A part of the first main line terminal line segment 38a and a part of the first sub-line terminal line segment 38b are formed at a pitch P of one side of the unit lattice 44a formed when the drive electrode 31DP and the sensing electrode 33SP are superimposed. When it is set, it is formed in the length of 2 pitch or less (refer FIG. 7). The lengths of the first main line end segment 38a and the first sub-line end segment 38b are preferably 1 or less, more preferably 1/2 or less. The lengths of the first main line end segment 38a and the first minor line end segment 38b in the present embodiment are a half pitch.

  Drive main line 31ML and drive sub line 31SL include line segments that do not straddle between capacitance detection portions ND adjacent to each other in first electrode direction D1, and form a first gap 39 between capacitance detection portions ND. There is. Therefore, a part of drive main line 31ML has a first main line terminal segment 38a at a position along first gap 39, and a part of drive subline 31SL is a position along first gap 39. , And the first minor end line segment 38b. Further, in the example of FIG. 4, the first main line end segment 38 a and the first sub-line end segment 38 b are formed also in one capacitance detection unit ND.

  For example, as indicated by a broken circle A in FIG. 4, in the drive electrode 31DP, in one capacitance detection unit ND, a drive whose end crosses the drive main line 31ML facing the first gap 39 located between the drive electrodes 31DP. When the length of the first minor end line segment 38b of the minor line 31SL is one pitch P, one side of the unit lattice is a half pitch.

  Further, as shown by a broken circle B in FIG. 4, in the drive electrode 31DP, the length of the first main line terminal line segment 38a at both ends of the drive main line 31ML is 1 / in a part of the plurality of drive main lines 31ML. Two pitches in length. The length of the first main line terminal line segment 38a at both ends of the drive main line 31ML across the capacitance detection portion ND adjacent to the second electrode direction D2 may be a half pitch or less.

  Further, as indicated by a broken-line circle C in FIG. 4, in the drive electrode 31DP, a part of the plurality of drive sub-lines 31SL corresponds to the first sub-line at both ends of the drive sub-line 31SL in one capacitance detection unit ND. The end segment 38b is provided, and the length of each first minor end segment 38b along the second linear direction DL2 is 1/2 pitch. In addition, the first sub-line terminal line segment 38b at both ends of the drive sub-line 31SL extending between two capacitance detection portions ND adjacent to each other in the second electrode direction D2 has a length equal to or less than 1⁄2 pitch. .

  As shown in FIG. 5A, a crack 103 may be formed at the first intersection point 37 of the drive main line 31ML and the drive sub line 31SL due to an etching failure or the like. The portion of the crack 103 may be broken while the touch panel 20 is repeatedly used. Since the opposing ends are close to each other at the disconnection point, connection or non-connection of the ends occurs depending on the usage conditions. Therefore, even if the user does not touch the finger or the stylus pen, a change in capacitance occurs. The dotted line portion extending from the first main line terminal line segment 38a indicates a conventional terminal line segment. The conventional terminal line segment is longer than the first main line terminal line segment 38a.

  As shown in FIG. 5B, the broken first main line terminal line segment 38a1 and the first minor line terminal line segment 38b1 have a length of 1⁄2 pitch when one side of the unit lattice 44a is one pitch P. Very short (see Figure 7). The shorter the first main line end segment 38a1 and the first sub-line end segment 38b1 are, the smaller the change in capacitance at the time of disconnection. Therefore, even if the opposite ends of the broken portion are connected or not connected, the change in capacitance is small, and the controller 36 is prevented from erroneously detecting the change in capacitance. be able to.

  Generally, the change in capacitance when the stylus pen touches the operation surface 20S is smaller than the change in capacitance when a finger touches the operation surface 20S. When the stylus pen touches the operation surface 20S, the change in the electrostatic capacitance is, if one side of the unit grid is one pitch, the first main line terminal line segment 38a having a length of about three pitches and the first minor line terminal This corresponds to when the line segment 38b is broken. In the present embodiment, the lengths of the first main line end segment 38a and the first minor line end segment 38b are 1/2 pitch. Therefore, even if the crack 103 is broken, the change in capacitance is small, and the controller 36 can be prevented from erroneously detecting the change in capacitance caused by the break. That is, even if the controller 36 sets the threshold value of the change in electrostatic capacitance low in accordance with the change in capacitance of the stylus pen, the occurrence of false detection due to disconnection can be suppressed.

[Configuration of sensing electrode]
The configuration of the sensing electrode will be described with reference to FIG. In FIG. 6, for convenience of describing the arrangement of the plurality of sensing electrode lines constituting sensing electrode 33SP, a portion constituting four capacitance detection portions ND among two sensing electrodes 33SP is shown enlarged and sensing The line widths of the electrode lines are exaggerated.

  Each of the plurality of sensing electrodes 33SP includes a plurality of sensing main lines 33ML and a plurality of sensing sub-lines 33SL. Sensing main line 33ML is different from drive main line 31ML in extending direction, and sensing sub line 33SL is also different in extending direction from drive sub line 31SL. A plurality of sensing sub-lines 33SL cross one sensing main line 33ML, and a plurality of sensing main lines 33 ML cross one sensing sub-line 33SL. The sensing main line 33ML and the sensing sub-line 33SL intersect with each other to form at least one L-shaped, inverted L-shaped, or cross-shaped or the like.

  As shown in FIG. 6, each of the plurality of sensing main lines 33ML is a line segment having a linear shape extending along the second line direction DL2. The plurality of sensing main lines 33ML are line segments that straddle two capacitance detection portions ND adjacent to each other in the first electrode direction D1. In addition, a part of the sensing main line 33ML is a line segment that is interrupted between the capacitance detection portions ND adjacent to each other in the second electrode direction D2.

  In addition, the sensing main lines 33ML are arranged along the second line direction DL2, for example, at an interval 3WS that is three times the main line interval WS in the first line direction DL1. That is, the sensing main lines 33ML are provided in parallel with each other at a main line interval WM, and are provided in parallel with each other at a main line interval 2WS twice as large as the main line interval WS. Some are provided in parallel with each other with a triple main wire interval 3WS.

  Each of the plurality of sensing sub-lines 33SL is a line segment having a linear shape extending along the first linear direction DL1. Some of the plurality of sensing sub-lines 33SL are line segments that are interrupted between the capacitance detection portions ND adjacent to each other in the second electrode direction D2. The plurality of sensing sub-lines 33SL are arranged along the first line direction DL1 at an interval 7 WM 7 times greater than the sub-line interval WM in the second line direction DL2. That is, the sensing sub-lines 33SL are provided in parallel with each other at a main line interval WM, and are provided in parallel with each other at a main line interval 2WM twice as large as the main line interval WM, There are those provided in parallel with each other with a main line interval 3WM three times as large as the above. Furthermore, the sensing sub-lines 33SL have main line spacing WM of four times, five times, six times, seven times.

  Each of the plurality of sensing sub-lines 33SL connects the plurality of sensing main lines 33ML in parallel. A plurality of sensing sub-lines 33SL, which connect a plurality of sensing main lines 33ML in parallel, are included for each one capacitance detection unit ND. Therefore, for example, as shown by a white circle in FIG. 6, even if a disconnection occurs in part of sensing main line 33ML, using sensing sub-line 33SL and sensing main line 33ML next to sensing main line 33 ML that is disconnected, a white circle portion A transmission path is formed that bypasses. Then, in the transmission path of the sensing electrode 33SP, in the portion excluding the bypassed portion, substantially the same resistance value as that in the normal state can be obtained. As a result, the resistance value of sensing electrode 33SP is increased by the increase of the resistance value of a part of the sensing electrode line, as compared with the configuration in which the sensing electrode line has only a straight line segment extending along the first electrode direction D1. It can be suppressed from increasing.

  In addition, a part of the plurality of sensing main lines 33ML includes a second main line terminal line segment 42a extending earlier from the second intersection 41 where the sensing main line 33ML and the sensing subline 33SL intersect. In addition, a part of the plurality of sensing sublines 33SL includes a second subline terminal line segment 42b extending earlier from the second intersection 41. A part of the second main line terminal line segment 42a and a part of the second sub-line terminal line segment 42b have a pitch P of one side of the unit lattice 44a formed when the drive electrode 31DP and the sensing electrode 33SP are superimposed. When it is set, it is formed in the length of 2 pitch or less (refer FIG. 7). The lengths of the second main line end segment 42a and the second sub-line end segment 42b are preferably 1 or less, more preferably 1/2 or less. The lengths of the second main line end segment 42a and the second subline end segment 42b in the present embodiment are 1/2 pitch.

  The sensing main line 33ML and the sensing sub-line 33SL include line segments not straddling between the capacitance detection portions ND adjacent to each other in the second electrode direction D2, and form a second gap 43 between the capacitance detection portions ND. There is. Therefore, a part of sensing main line 33ML has second main line terminal segment 42a at a position along second gap 43, and a part of sensing subline 33SL is at a position along second gap 43. , And the second minor end line segment 42b. Further, in the example of FIG. 6, the second main line end segment 42a and the second subline end segment 42b are formed also in one capacitance detection unit ND.

  For example, in the circle D indicated by a broken line in FIG. 6, in the sensing electrode 33SP, a sensing subline 33SL whose end intersects the sensing main line 33ML facing the second gap 43 located between the sensing electrodes 33SP in one capacitance detection unit ND. The second subline end segment 42b has a length of 1/2 pitch when one side of the unit lattice 44a is one pitch P.

  Further, as shown by a dotted circle E in FIG. 6, in the sensing electrode 33SP, both ends of the sensing main line 33ML in a part of the plurality of sensing main lines 33ML straddling the two capacitance detection portions ND adjacent in the first electrode direction D1. The length of the second main line end segment 42a of the part is a half pitch. The length of the second main line terminal line segment 42a at both ends of the sensing main line 33ML which does not straddle the capacitance detection portion ND adjacent to the first electrode direction D1 may be a half pitch or less.

  Further, as shown by a broken-line circle F in FIG. 6, in the sensing electrode 33SP, a part of the plurality of sensing sub-lines 33SL corresponds to the second sub-line at both ends of the sensing sub-line 33SL in one capacitance detection unit ND. The end segment 42b is provided, and the length of each second minor end segment 42b along the first linear direction DL1 is 1/2 pitch. Note that the second subline terminal line segments 42b at both ends of the sensing subline 33SL extending between the capacitance detection portions ND adjacent to each other in the first electrode direction D1 may have a half pitch length.

  As shown in FIG. 5A, a crack 103 may be formed due to an etching defect or the like at the second intersection 41 of the sensing main line 33ML and the sensing sub-line 33SL. The portion of the crack 103 may be broken while the touch panel 20 is repeatedly used. The dotted line portion extending from the second main line end line segment 42a indicates a conventional end line segment. The conventional terminal line segment is longer than the second main line terminal line segment 42a.

  As shown in FIG. 5B, the broken second main line terminal line segment 42a1 and the second minor line terminal line segment 42b1 have a length of 1⁄2 pitch when one side of the unit lattice 44a is one pitch P. Very short (see Figure 7). The shorter the second main line end segment 42a1 and the second sub-line end segment 42b1 are, the smaller the change in capacitance at the time of disconnection. Therefore, as in the case of the drive main line 31ML and the drive sub line 31SL, even when the opposing ends of the broken portion are connected or disconnected, the change in electrostatic capacitance is small, and the controller 36 It is possible to suppress false detection of a change in capacitance. That is, even if the controller 36 sets the threshold value of the change in electrostatic capacitance low in accordance with the change in capacitance of the stylus pen, the occurrence of false detection due to disconnection can be suppressed.

[Configuration of electrode for touch panel]
The configuration of the touch sensor electrode will be described with reference to FIG. In FIG. 7, the line widths of the plurality of line segments are exaggerated for the convenience of describing the arrangement of the plurality of line segments that configure the touch sensor electrode. Further, the drive electrode lines are indicated by white outlined lines, and the sensing electrode lines are indicated by black thick lines.

  As shown in FIG. 7, a lattice in which a plurality of line segments constituting drive electrode 31DP and a plurality of line segments constituting sensing electrode 33SP are repetitions of a unit lattice having a square shape which is an example of a square shape. The pattern 44 is configured.

  That is, the drive main line 31ML is disposed at a position intersecting each other with the sensing main line 33ML and at a position not overlapping the sensing sub-line 33SL in the first line direction DL1. In addition, the drive sub line 31SL is disposed at a position that intersects the sensing sub line 33SL, and does not overlap the sensing main line 33ML in the second line direction DL2. Furthermore, sensing main line 33ML is disposed at a position that intersects with drive main line 31ML, and does not overlap with drive sub-line 31SL in the second line direction DL2. Furthermore, the sensing sub-line 33SL is disposed at a position that intersects the drive sub-line 31SL and does not overlap the drive main line 31ML in the first line direction DL1.

  Here, the minimum main-line interval WM of drive main line 31ML, the minimum sub-line interval WS of drive sub-line 31SL, the minimum main-line interval WM of sensing main line 33ML, and the minimum sub-line interval WS of sensing sub-line 33SL are equal. Therefore, the unit lattices 44a constituting the lattice pattern 44 are square. The unit grids 44a may have a rectangular shape close to a square, with the dimensions of adjacent sides being slightly different. Assuming that one side of the square unit grid 44a is one pitch, the lengths of the first main line end segment 38a of the drive main line 31ML and the first subline end line segment 38b of the drive subline 31SL are 1/2. It is the length of the pitch. The length of the second main line terminal line segment 42a of the sensing main line 33ML and the second sub-line terminal line segment 42b of the sensing subline 33SL is 1/2 pitch.

  Therefore, as shown by the dotted circle H in FIG. 7, one side of a part of unit lattices 44a is the first main line terminal segment 38a of the drive main line 31ML and the second of the sensing subline 33SL in the first line direction DL1. And a subline end segment 42b. The first main line end segment 38a and the second sub-line end segment 42b both have a half pitch of one side of the unit lattice 44a. The first main line end segment 38a and the second sub-line end segment 42b extend from opposite ends of one side of the square to form one side of the unit lattice 44a. That is, on one side constituting unit grid 44a, first main line terminal segment 38a extends from one end to the other end along first linear direction DL1 and from the other end A second minor line end segment 42b extends along the first linear direction DL1 toward one end.

  Further, as indicated by a broken circle G in FIG. 7, one side of a part of unit lattices 44 a corresponds to the first sub-line end segment 38 b of the drive sub-line 31SL and the first sensing main line 33 ML in the second line direction DL2. It consists of a two main line terminal line segment 42a. The first subline end segment 38b and the second main line end segment 42a both have a half pitch length of one side of the unit lattice 44a. The first subline end segment 38b and the second main line end segment 42a extend from opposite ends of one side of the square to form one side of the unit lattice 44a. That is, on one side constituting unit grid 44a, first sub-line terminal segment 38b extends from one end to the other end along second linear direction DL2 and the other end And a second main line end segment 42a extends from the second main direction DL2 toward one end along the second linear direction DL2.

  When one side of the unit grid 44a is constituted by the first subline end segment 38b and the second main line end segment 42a, the lengths of the first subline end segment 38b and the second main line end segment 42a are It is preferable that it is 1/2 pitch. This is because a line segment having a half pitch can be easily processed as designed by etching at the time of manufacturing a touch sensor electrode. Of course, when one of the first subline end segment 38b and the second main line end segment 42a is longer than 1/2 pitch, the first subline end segment 38b and the second main line end segment 42a are The other is shortened.

  Also, even when one side of the unit grid 44a is constituted by the first main line end line segment 38a and the second sub-line end line segment 42b, the lengths of the first main line end line segment 38a and the second sub-line end line segment 42b Preferably, the pitch is 1/2 pitch. This is because a line segment having a half pitch can be easily processed as designed by etching at the time of manufacturing a touch sensor electrode. Of course, when one of the first main line end line segment 38a and the second sub-line end line segment 42b is longer than 1/2 pitch, the first main line end line segment 38a and the second sub-line end line segment 42b The other is shortened.

  As shown in FIG. 8, in general, most of the detection area 10D where the drive electrode lines of the display panel 10 and the sensing electrode lines intersect in a three-dimensional manner and the display area 10S where an image or the like is displayed It has a shape. The display area 10S is, for example, a rectangular area facing the outside of the frame of the electronic device, and is an area where image data and moving image data are displayed. The outer peripheral portion 45 of the display area 10S is an area hardly operated by a finger or a stylus pen. The outer peripheral portion 45 is, for example, a rectangular ring having a predetermined width from the outer peripheral edge of the display area 10S. The outer peripheral portion 45 is, for example, an area in which the capacitance detection portions ND are annularly arranged in a single row with a width of about one capacitance detection portion ND. Of course, depending on the size of the capacitance detection portion ND, the width of the outer peripheral portion 45 may be two rows or more of the capacitance detection portion ND or may be less than the capacitance detection portion ND.

  The display panel 10 is used for a palm size electronic device and has a display surface of about 4 to 6 inches. In such a display panel 10, the outer peripheral portion 45 is approximately 30% of the entire display region 10S. And the ratio of the outer peripheral part 45 becomes small, so that the inch size of the display area 10S is large. Then, an area inside the outer peripheral portion 45 excluding the outer peripheral portion 45 is an actual operation area 46 which is actually touch-operated by the user's finger or a stylus pen. Therefore, in the display panel 10, the operation area 46 which occupies 70% or more of the display area is an area in which the end line segments 38a, 38b, 42a, 42b have a half pitch. Thereby, in the operation area 46, the capacitance associated with the disconnection of the first main line end segment 38a or the first subline end segment 38b or the disconnection of the second main line end segment 42a or the second subline end segment 42b. Changes can be kept small.

  In this case, the outer peripheral portion 45 sets the threshold value of the change in capacitance of the controller 36 so as to lower the detection sensitivity of the change in capacitance. For example, the threshold value of the capacitance change amount set for the capacitance detection unit ND is set to a value larger than the capacitance change when at least a terminal line segment longer than a half pitch existing in the outer peripheral portion 45 is broken. Set As a result, the controller 36 causes connection or disconnection of the broken portion in the outer peripheral portion 45, and even if a change in capacitance occurs, this change is not detected, and the change in capacitance accompanying the disconnection is caused. False positives can be suppressed.

  In addition, the change of the electrostatic capacity accompanying the disconnection of the 1st main line terminal line segment 38a mentioned above or the 1st subline terminal line segment 38b and the disconnection of the 2nd main line terminal line segment 42a or the 2nd subline terminal line segment 42b is made small. For this purpose, the half pitch may be 70% or more of the detection area 10D in which the drive electrode lines and the sensing electrode lines three-dimensionally intersect (see FIG. 1). Although the detection area 10D is often formed to be slightly larger than the display area 10S, it can be regarded as substantially the same size as the display area 10S.

  In plan view facing the sensing surface, each of the drive electrode 31DP and the sensing electrode 33SP preferably has a black color in order to suppress light scattering. The blackening of the drive electrode 31DP and the sensing electrode 33SP is realized, for example, by oxidation treatment of metal wiring or plating treatment of a metal film having black.

As mentioned above, according to the said 1st Embodiment, the effect listed below is acquired.
(1) The first main line terminal line segment 38a of the drive main line 31ML and the first sub-line terminal line segment 38b of the drive subline 31SL have a half pitch length when one side of the unit lattice 44a is one pitch. And become shorter. Therefore, even if the first main line end segment 38a or the first subline end segment 38b is broken due to the crack 103 or the like, the change in capacitance at that time can be reduced, and erroneous detection is suppressed. be able to.

  (2) The second main line terminal line segment 42a of the sensing main line 33ML and the second sub-line terminal line segment 42b of the sensing subline 33SL also have a half pitch when one side of the unit lattice 44a is one pitch. , Is shorter. Therefore, even if the second main line end line segment 42a or the second sub-line end line segment 42b is broken due to the crack 103 or the like, the change in capacitance at that time can be reduced, thereby suppressing erroneous detection. be able to.

(3) Since the drive main line 31ML is connected by the drive sub line 31SL, the increase in the resistance value of the drive electrode 31DP due to the increase in the resistance value of a part of the drive electrode line can be suppressed.
(4) Since the sensing main line 33ML is connected by the sensing sub-line 33SL, an increase in the resistance value of the sensing electrode 33SP due to an increase in the resistance value of a part of the sensing electrode line can be suppressed.

  (5) According to the touch sensor electrode 21, the drive electrode 31DP has periodicity along the first electrode direction D1, and the sensing electrode 33SP has periodicity along the second electrode direction D2. . On the other hand, each of drive main line 31ML, drive sub line 31SL, sensing main line 33ML, and sensing sub line 33SL has a linear shape extending along a direction intersecting first electrode direction D1 and second electrode direction D2. Have. Here, in the device on which the touch sensor electrode 21 is mounted, the touch sensor generally has a direction in which the operation target elements, which are elements to be operated on the touch panel 20, such as the pixels 15P and the black matrix 15a, The direction in which the capacitance detection portions ND are arranged in the electrode 21 is aligned. In this point, in the configuration described above, the interference between the periodicity of the drive main line 31ML and the drive subline 31SL and the periodicity of the operation target element is suppressed, and the sensing main line 33ML and the sensing subline 33SL are Interference with the periodicity of having and the periodicity of the operation target element is suppressed. Therefore, in the device on which the touch sensor electrode 21 is mounted, moire caused by the touch sensor electrode 21 can be suppressed.

The first embodiment described above can be implemented with appropriate modifications as follows.
The first main line end segment 38a, the first subline end segment 38b, the second main line end segment 42a, and the second subline end segment 42b having a half pitch length are displayed in the display area 10S or the detection It may be 70% or more of the area 10D. That is, not the outer peripheral portion 45 but the display area 10S or the detection area 10D may be provided discretely, for example.

  The lengths of the end line segments 38a, 38b, 42a, 42b are not particularly limited as long as they are two or less pitches of the unit lattice 44a, and may be one pitch or the like.

Second Embodiment
The touch sensor electrode, the touch panel, and the display device according to the second embodiment will be described with reference to FIGS. 9 to 11. In the second embodiment, the configuration of the drive electrode lines and the configuration of the sensing electrode lines are mainly different from those in the first embodiment. In the following, differences in these configurations will be mainly described, and the same configurations as the configurations in the first embodiment will be assigned the same reference numerals and descriptions thereof will be omitted.

[Drive electrode 31DP]
As shown in FIG. 9, each of the plurality of drive electrodes 31DP includes a plurality of drive main lines 31ML and a plurality of drive sub lines 31SL. Each of drive sub lines 31SL connects drive main lines 31ML adjacent to each other in parallel. The sub-line interval in the first line direction DL1 of the drive sub-line 31SL is six times the main line interval WM in the second line direction DL2 of the drive main line 31ML, and forms a rectangular grid pattern.

  Each of the plurality of drive main lines 31ML is a line segment having a linear shape extending along the first linear direction DL1 between the first electrode direction D1 and the second electrode direction D2. The plurality of drive main lines 31ML are line segments that straddle two capacitance detection portions ND adjacent to each other in the second electrode direction D2. Further, the drive main line 31ML is a line segment which is interrupted between the capacitance detection parts ND adjacent to each other in the first electrode direction D1.

  The plurality of drive sub lines 31SL are line segments having a linear shape extending along the second line direction DL2, and the sub line interval is 6 WM. Each of the plurality of drive sub lines 31SL connects the plurality of drive main lines 31ML in parallel. A plurality of drive sub-lines 31SL connecting a plurality of drive main lines 31ML in parallel is included for each one capacitance detection unit ND. Therefore, for example, as shown by a white circle in FIG. 9, even if a disconnection occurs in a part of drive main line 31ML, a drive circle 31SL and drive main line 31ML next to the disconnected drive main line 31ML are used as white circles. A transmission route that bypasses Then, in the transmission path of the drive electrode 31DP, in the portion excluding the detoured portion, a resistance value substantially the same as that in the normal state is obtained. As a result, the resistance value of drive electrode 31DP is increased by the increase of the resistance value of a portion of the drive electrode line as compared with the configuration in which the drive electrode line has only a straight line segment extending along the second electrode direction D2. The increase can be suppressed.

  The drive main line 31ML has line segments that do not straddle between capacitance detection portions ND adjacent to each other in the first electrode direction D1, and forms a first gap 39 between the capacitance detection portions ND. Therefore, at a position along the first gap 39, a first main line terminal line segment 38a extending earlier from the first intersection 37 where the drive main line 31ML and the drive sub line 31SL intersect is formed. The first main line terminal segment 38a has a length of one pitch and a length of three pitches, where one pitch P is one side of the unit lattice 44a formed when the drive electrode 31DP and the sensing electrode 33SP are superimposed. Have Among these, the first main line end segment 38a surrounded by a broken circle A in FIG. 9 having a length of 2 pitches or less is a length of 1 pitch.

  As shown in FIG. 5 (b), the broken first pitch main line terminal line segment 38a1 is extremely short. Therefore, even if the opposite ends of the broken portion are connected or not connected, the change in capacitance is small, and the controller 36 is prevented from erroneously detecting the change in capacitance. be able to.

[Configuration of sensing electrode]
As shown in FIG. 10, each of the plurality of sensing electrodes 33SP includes a plurality of sensing main lines 33ML and a plurality of sensing sub-lines 33SL. Each of sensing sub-lines 33SL connects sensing main lines 33ML in parallel. Further, the subline interval of the sensing subline 33SL in the second line direction DL2 is six times the main line interval WM of the sensing main line 33ML in the first line direction DL1, and forms a rectangular grid pattern. That is, sensing main line 33ML differs from drive main line 31ML in extending direction, and sensing sub line 33SL also differs in extending direction from drive sub line 31SL. On the other hand, the relative positional relationship between sensing main line 33ML and sensing sub-line 33SL is similar to the relative positional relationship between drive main line 31ML and drive sub-line 31SL.

  As shown in FIG. 10, each of the plurality of sensing main lines 33ML is a line segment having a linear shape extending along the second line direction DL2. The plurality of sensing main lines 33ML are line segments that straddle two capacitance detection portions ND adjacent to each other in the first electrode direction D1. Also, the sensing main line 33ML is a line segment that is interrupted between the capacitance detection parts ND adjacent to each other in the second electrode direction D2.

  The plurality of sensing sub-lines 33SL are line segments having a linear shape extending along the first line direction DL1, and the sub-line spacing is 6 WM. Each of the plurality of sensing sub-lines 33SL connects the plurality of sensing main lines 33ML in parallel. A plurality of sensing sub-lines 33SL, which connect a plurality of sensing main lines 33ML in parallel, are included for each one capacitance detection unit ND. Therefore, for example, as shown by a white circle in FIG. 10, even if a disconnection occurs in a part of sensing main line 33ML, using sensing main line 33ML next to sensing sub-line 33SL and sensing main line 33ML, a white circle portion is used. A transmission route that bypasses Then, in the transmission path of the sensing electrode 33SP, in the portion excluding the detoured portion, a resistance value substantially the same as that in the normal state is obtained. As a result, the resistance value of sensing electrode 33SP is increased by the increase of the resistance value of a part of the sensing electrode line, as compared with the configuration in which the sensing electrode line has only a straight line segment extending along the first electrode direction D1. The increase can be suppressed.

  The sensing main line 33ML has line segments that do not straddle between capacitance detection portions ND adjacent to each other in the second electrode direction D2, and forms a second gap 43 between the capacitance detection portions ND. Therefore, at a position along the second gap 43, a second main line terminal line segment 42a extending earlier from the second intersection 41 where the sensing main line 33ML and the sensing subline 33SL intersect is formed. The second main-line terminal line segment 42a has a length of one pitch and a length of three pitches, where one pitch P is one side of the unit lattice 44a formed when the drive electrode 31DP and the sensing electrode 33SP are overlapped. Have Among them, the second main line end segment 42a surrounded by a broken circle B in FIG. 10 having a length of 2 pitches or less has a length of 1 pitch.

  As shown in FIG. 5B, the broken second main line terminal line segment 42a1 of one pitch is extremely short. Therefore, even if the opposite ends of the broken portion are connected or not connected, the change in capacitance is small, and the controller 36 is prevented from erroneously detecting the change in capacitance. be able to.

[Configuration of electrode for touch panel]
As shown in FIG. 11, a plurality of line segments constituting drive electrode 31DP and a plurality of line segments constituting sensing electrode 33SP are repetitions of unit lattice 44a having a square shape which is an example of a square shape. A lattice pattern 44 is configured. In the present embodiment, the drive main line 31ML is disposed at a position where it crosses the sensing main line 33ML.

  Here, the minimum main line interval WM of the drive main line 31ML and the minimum main line interval WM of the sensing main line 33ML are equal. Therefore, the unit lattices 44a constituting the lattice pattern 44 are square. In particular, the first main line end segment 38a and the second main line end segment 42a each having a length of one pitch constitute one side of the unit lattice 44a. The first main line terminal line segment 38a and the second main line terminal line segment 42a each having a length of one pitch have a small change in capacitance even when opposing ends of the broken line are connected or not connected. Thus, the controller 36 can be prevented from erroneously detecting the change in capacitance.

Third Embodiment
With reference to FIG.12 and FIG.13, the electrode for touch sensors in 3rd Embodiment, a touch panel, and a display apparatus are demonstrated. In the third embodiment, the configuration of the drive electrode lines and the configuration of the sensing electrode lines are mainly different from those in the first embodiment. In the following, differences in these configurations will be mainly described, and the same configurations as the configurations in the first embodiment will be assigned the same reference numerals and descriptions thereof will be omitted.

[Drive electrode 31DP]
As shown in FIG. 12, each drive electrode 31DP includes a plurality of drive electrode lines 31L aligned in the first electrode direction D1, for example, 15 drive electrode lines 31L. Each drive electrode line 31L is composed of a plurality of reference patterns 31RP arranged along the first electrode direction D1. The distance between two drive electrode lines 31L adjacent to each other in the second electrode direction D2 is equal to each other, even between two drive electrodes 31DP adjacent to each other in the second electrode direction D2.

  Further, each of the fifteen drive electrode lines 31L constituting one drive electrode 31DP is electrically connected to the drive electrode lines 31L adjacent to each other in the first electrode direction D1.

  A line segment having a linear shape extending along the first line direction DL1 between the first electrode direction D1 and the second electrode direction D2 is the drive main line 31ML. A line segment having a linear shape extending along the second linear direction DL2 between the first electrode direction D1 and the second electrode direction D2 is a drive subline 31SL. The drive main lines 31ML and the drive sub lines 31SL having different inclinations alternately connect each other in the first electrode direction D1. Two drive main lines 31ML are connected in the opposite direction to one drive sub-line 31SL, and each form a first intersection 37. The portion extending forward from the first intersection 37 of the drive subline 31SL is a first subline terminal line segment 38b.

[Sensing electrode 33SP]
Although the sensing electrode 33SP is different from the drive electrode 31DP in that the reference direction of the reference pattern constituting the sensing electrode 33SP is the second electrode direction D2, the configuration of the reference pattern of the sensing electrode 33SP is the drive electrode The configuration of the reference pattern in 31DP is mutually equivalent FIG. 13 is a plan view showing a planar structure seen from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked. In FIG. 13, in order to simplify the distinction between the plurality of drive electrode lines 31L forming the drive electrode 31DP and the plurality of sensing electrode lines 33L forming the sensing electrode 33SP, the drive electrode lines 31L are relatively thin. On the other hand, the sensing electrode line 33L is indicated by a relatively thick line.

  Specifically, as shown in FIG. 13, the sensing electrode 33SP includes a plurality of sensing electrode lines 33L aligned in the first electrode direction D1, for example, 15 sensing electrode lines 33L. Each sensing electrode line 33L is composed of a plurality of reference patterns 33RP arranged along the second electrode direction D2. The distance between two sensing electrode lines 33L adjacent to each other in the first electrode direction D1 is between the two sensing electrodes 33SP adjacent to each other in the first electrode direction D1, even within one sensing electrode 33SP. Even if they are equal to each other.

  Each of the 15 sensing electrode lines 33L that constitute one sensing electrode 33SP is electrically connected to the sensing electrode lines 33L adjacent to each other in the first electrode direction D1.

  A line segment having a linear shape extending along the second line direction DL2 is a sensing main line 33ML. A line segment having a linear shape extending along the first linear direction DL1 is a sensing subline 33SL. The sensing main lines 33ML and the sensing sub-lines 33SL having different inclinations alternately connect each other. Two sensing main lines 33ML are connected in the opposite direction to one sensing sub-line 33SL to form a second intersection point 41. The portion of the sensing subline 33SL extending forward from the second intersection 41 is a second subline end segment 42b.

[Configuration of electrode for touch panel]
As shown in FIG. 13, a lattice in which a plurality of line segments constituting drive electrode 31DP and a plurality of line segments constituting sensing electrode 33SP are repetitions of a unit lattice having a square shape which is an example of a square shape. The pattern 44 is configured.

  Here, as shown in FIG. 12 and FIG. 13, the length of the drive sub line 31SL is three times the length LD of the first sub line terminal segment 38b. In addition, the length of the drive main line 31ML is twice the length LD of the first sub line end segment 38b. As shown in FIG. 13, the length of the sensing sub-line 33SL is three times the length SL of the second sub-line terminal segment 42b. Further, the length of the sensing main line 33ML is twice the length SL of the second sub-line end segment 42b. Further, the middle point of drive main line 31ML of drive electrode line 31L adjacent to the extension line of drive sub line 31SL is located. The middle point of the sensing main line 33ML of the sensing electrode line 33L adjacent to the extension line of the sensing sub-line 33SL is located. The length LD of the first subline terminal segment 38b is equal to the length SL of the second subline terminal segment 42b. Therefore, as shown in FIG. 13, the unit lattice 44a which comprises the lattice pattern 44 becomes a square.

  In particular, the first subline end segment 38b and the second subline end segment 42b having a length of one pitch constitute one side of the unit lattice 44a. Therefore, even if the first subline terminal line segment 38b having a length of one pitch and the drive subline 31SL are disconnected at the first intersection 37 and the opposing ends of the disconnected portion are in a connected or disconnected state. As a result, the change in capacitance is reduced, and the controller 36 can be prevented from erroneously detecting the change in capacitance. In addition, even if the second subline terminal line segment 42b of the pitch length and the sensing subline 33SL are disconnected at the second intersection 41, and the opposing ends of the disconnection point are in a connected or non-connected state, The change in capacitance is reduced, and the controller 36 can be prevented from erroneously detecting the change in capacitance.

Fourth Embodiment
The touch sensor electrode, the touch panel, and the display device according to the fourth embodiment will be described with reference to FIGS. 14 to 16. In the fourth embodiment, the configuration of the drive electrode lines and the configuration of the sensing electrode lines are mainly different from those in the first embodiment. In the following, differences in these configurations will be mainly described, and the same configurations as the configurations in the first embodiment will be assigned the same reference numerals and descriptions thereof will be omitted.

[Drive electrode 31DP]
As shown in FIG. 14, one drive electrode 31DP includes one pad 31P and a drive electrode band 31B having a grid shape and connected to the pad 31P. The pad 31P has a band shape extending along the second electrode direction D2, and the width of the pad 31P along the first electrode direction D1 is the drive pad width WPD.

  Drive electrode band 31B includes a plurality of drive main lines 31ML having a linear shape extending along first line direction DL1 between first electrode direction D1 and second electrode direction D2, and a plurality of drive main lines orthogonal to first line direction DL1 And a plurality of drive sub-lines 31SL having a linear shape extending along the two-line direction DL2.

  One drive electrode 31DP is a strip electrode extending along the second electrode direction D2, and the plurality of drive electrodes 31DP are arranged along the first electrode direction D1 with a drive electrode gap GDP being a predetermined interval. There is.

  The first linear direction DL1 which is the extending direction of each drive main line 31ML constituting one drive electrode band 31B forms a facing angle θ1 which is a predetermined angle with the first electrode direction D1. The facing angle θ1 is 45 °, for example. Each drive main line 31ML extends in the first linear direction DL1 inside the area divided by the drive pad width WPD in the first electrode direction D1. In the plurality of drive main lines 31ML, two drive main lines 31ML adjacent to each other in the second electrode direction D2 have a drive interval GD1 that is a predetermined distance along the second line direction DL2 orthogonal to the first line direction DL1. They are lined up empty.

  In the plurality of drive sub-lines 31SL constituting one drive electrode band 31B, the second linear direction DL2 in which each drive sub-line 31SL extends is orthogonal to the first linear direction DL1 and is opposite to the first electrode direction D1 It forms θ1. Each drive sub line 31SL extends in the second linear direction DL2 inside the area divided by the drive pad width WPD in the first electrode direction D1. The two drive sub lines 31SL adjacent to each other in the first electrode direction D1 are arranged along the first line direction DL1 with a drive interval GD2 therebetween. The drive interval GD2 is equal to, for example, the drive interval GD1.

  In one drive electrode band 31B, each drive main line 31ML intersects with the drive sub line 31SL, and each drive sub line 31SL intersects with the drive main line 31ML. Thereby, the plurality of drive main lines 31ML and the plurality of drive sub lines 31SL form a lattice pattern 44D constituted by a plurality of unit lattices 44Da having a rectangular shape, here, a square shape.

  Between the drive electrode bands 31B adjacent to each other, there is a first gap 39 having a width of GDP, and the drive main line 31ML and the drive sub line 31SL are disconnected. The drive main line 31ML is a first main line terminal line segment 38a, and the drive subline 31SL is a first sub-line terminal line segment 38b. The first main line terminal line segment 38a and the first sub-line terminal line segment 38b are separated from the first intersection point 37 of the drive main line 31ML and the drive sub line 31SL by the amount that LD is unit lattice 44Da It is shorter than one side.

[Sensing electrode 33SP]
As shown in FIG. 15, one sensing electrode 33SP includes one pad 33P and a sensing electrode band 33B having a grid shape and connected to the pad 33P. The pad 33P has a band shape extending along the first electrode direction D1, and the width of the pad 33P along the second electrode direction D2 is a sensing pad width WPS.

  The sensing electrode band 33B extends along the first linear direction DL1 with a plurality of sensing main lines 33ML having a linear shape extending along the second linear direction DL2 between the first electrode direction D1 and the second electrode direction D2. And a plurality of sensing sub-lines 33SL having a linear shape.

  The sensing electrodes 33SP are strip-shaped electrodes extending along the first electrode direction D1, and the plurality of sensing electrodes 33SP are arranged along the second electrode direction D2 at intervals of sensing electrode intervals GSP, which are predetermined intervals.

  The second linear direction DL2 which is the extending direction of each sensing main line 33ML constituting one sensing electrode band 33B forms an opposing angle θ1 which is a predetermined angle with the second electrode direction D2. The facing angle θ1 is 45 °, for example. Each sensing main line 33ML extends in the second linear direction DL2 inside the area divided by the sensing pad width WPS in the second electrode direction D2. In the plurality of sensing main lines 33ML, two sensing main lines 33ML adjacent to each other in the first electrode direction D1 are arranged along the first line direction DL1 at a sensing interval GS2 that is a predetermined interval.

  In the plurality of sensing sub-lines 33SL that constitute one sensing electrode band 33B, the first linear direction DL1 in which each sensing sub-line 33SL extends is orthogonal to the second linear direction DL2 and is opposite to the second electrode direction D2 It forms θ1. Each sensing sub-line 33SL extends in the first linear direction DL1 inside the area divided by the sensing pad width WPS in the second electrode direction D2. The two sensing sub-lines 33SL adjacent to each other in the second electrode direction D2 are arranged along the second line direction DL2 at a sensing interval GS1. The sensing interval GS2 is, for example, mutually equal to the sensing interval GS1.

  In one sensing electrode band 33B, each sensing main line 33ML intersects the sensing sub-line 33SL, and each sensing sub-line 33SL intersects the sensing main line 33ML. Thereby, the plurality of sensing main lines 33ML and the plurality of sensing sub-lines 33SL form a lattice pattern 44S configured by a plurality of unit lattices 44a having a rectangular shape.

  Between the sensing electrode bands 33B adjacent to each other, there is a second gap 43 having a width of GSP, and the sensing main line 33ML and the sensing sub-line 33SL are disconnected. The sensing main line 33ML is a second main line terminal line segment 42a, and the sensing subline 33SL is a second sub-line terminal line segment 42b. The second main line terminal line segment 42a and the second sub-line terminal line segment 42b are separated from the second intersection point 41 of the sensing main line 33ML and the sensing sub-line 33SL by the amount that LS is unit grid 44Sa It is shorter than one side.

[Electrode for touch sensor]
As shown in FIG. 16, the plurality of drive electrodes 31DP overlap the plurality of sensing electrodes 33SP in a plan view. A region in which one drive electrode 31DP and one sensing electrode 33SP three-dimensionally intersect is a capacitance detection unit ND. Then, in the touch sensor electrode 21, an electrostatic capacitance is formed in the direction in which the drive electrode 31 DP and the sensing electrode 33 SP are stacked.

  As described above, the grid pattern 44D of the drive electrode 31DP and the grid pattern 44S of the sensing electrode 33SP overlap. A dummy pattern 47 is located at a portion where the drive electrode 31DP and the sensing electrode 33SP do not overlap. The dummy pattern 47 is a part of the drive electrode 31DP and is not connected to the sensing electrode 33SP.

  The first main line end segment 38a and the first minor line end segment 38b having a length of one pitch constitute one side of the unit lattice 44Da. Therefore, the first main line terminal line segment 38a and the first sub-line terminal line segment 38b having a length of one pitch are broken at the first intersection 37, and the opposing ends of the broken line are connected or not connected Even in this case, the change in capacitance is small, and the controller 36 can be prevented from erroneously detecting the change in capacitance.

  Further, even in the second main line terminal line segment 42a and the second sub-line terminal line segment 42b having a length of one pitch, one side of the unit lattice 44Sa is configured. Therefore, the second main line terminal line segment 42a and the second sub-line terminal line segment 42b having a length of one pitch are broken at the second intersection 41, and the opposing ends of the broken points are connected or not connected Even in this case, the change in capacitance is small, and the controller 36 can be prevented from erroneously detecting the change in capacitance.

[Modification of touch panel]
As shown in FIG. 17, in the touch sensor electrode 21 constituting the touch panel 20, the transparent substrate 31 and the transparent adhesive layer 32 may be omitted. In such a configuration, in the surface of the transparent dielectric substrate 33, one surface facing the display panel 10 may be set as the drive electrode surface 31S, and the drive electrode 31DP may be located on the drive electrode surface 31S. Then, the sensing electrode 33SP may be positioned on the surface of the transparent dielectric substrate 33 facing the drive electrode surface 31S.

  In such a configuration, the drive electrode 31DP is formed, for example, by patterning one thin film formed on the drive electrode surface 31S.

  18, as shown in FIG. 18, in the touch panel 20, the drive electrode 31DP, the transparent substrate 31, the transparent adhesive layer 32, the transparent dielectric substrate 33, the sensing electrode 33SP, and the transparent adhesive layer 23 in order from the components closest to the display panel 10. , Cover layer 22 may be located.

  In such a configuration, for example, the drive electrode 31DP is formed on the drive electrode surface 31S which is one surface of the transparent substrate 31, and the sensing electrode 33SP is a sensing electrode surface 33S which is one surface of the transparent dielectric substrate 33. Is formed. Then, the transparent adhesive layer 32 bonds the surface of the transparent substrate 31 facing the drive electrode surface 31S and the surface of the transparent dielectric substrate 33 corresponding to the sensing electrode surface 33S.

  The display panel 10 and the touch panel 20 may not be separately formed, and the touch panel 20 may be integrally formed with the display panel 10. In such a configuration, for example, in-cell in which the plurality of drive electrodes 31DP of the touch sensor electrode 21 are positioned on the TFT layer 13 and the plurality of sensing electrodes 33SP are positioned between the color filter substrate 16 and the upper polarization plate 17 It can be of type configuration. Alternatively, an on-cell type configuration in which the touch sensor electrode 21 is located between the color filter substrate 16 and the upper polarizing plate 17 may be used.

D1: first electrode direction, D2: second electrode direction, ND: capacitance detection unit, DL1: first line direction, DL2: second line direction, P: pitch, 10: display panel, 10S: display area, 10D: 10D: Detection area 11 lower polarizing plate 12 thin film transistor substrate 13 TFT layer 14 liquid crystal layer 15 color filter layer 15a black matrix 15P pixel 16 color filter substrate 17 upper polarization Plate 20, touch panel, 20S, operation surface, 21: electrode for touch sensor, 22: cover layer, 23: transparent adhesive layer, 31: transparent substrate, 31DP: drive electrode, 31ML: drive main line, 31SL: drive subline, 33: transparent dielectric substrate, 33SP: sensing electrode, 33ML: sensing main line, 33SL: sensing subline, 34: selection circuit, 35: detection circuit, 6 Controller: 37 First intersection 38a First main line terminal line segment 38b First sub-line terminal line segment 39: First gap 41: Second intersection point 42a Second main line terminal line segment 42b: second sub-line terminal line segment, 43: second gap, 44: lattice pattern, 44a: unit lattice, 45: outer peripheral portion, 46: operation region, 47: dummy pattern.

Claims (7)

A plurality of first electrodes having a band shape extending along a first electrode direction, which is one direction, and being spaced apart from each other along a second electrode direction which is a direction intersecting the first electrode direction. An electrode,
A plurality of strips having a band shape extending along the direction of the second electrode, and arranged in a row with a second gap along the direction of the first electrode and three-dimensionally intersecting with each of the plurality of first electrodes Equipped with two electrodes,
Each of the plurality of first electrodes includes a plurality of first main lines which are line segments having a straight line shape extending along a first line direction which is one direction, and a direction which intersects the first line direction And a plurality of first sublines, which are line segments having a straight line shape extending along the two-line direction;
Each of the plurality of second electrodes has a plurality of second main lines which are line segments having a straight line shape extending along the second line direction, and a line segment having a straight line shape extending along the first line direction And a plurality of second minor lines,
The plurality of first main lines, the plurality of first sub-lines, the plurality of second main lines, and the second sub-line have a rectangular shape in plan view facing the plane including the plurality of second electrodes. Construct a grid pattern which is a repetition of the unit cell having
Each of the first electrodes has a plurality of first intersections formed by the intersection of the first main line and the first sub-line,
Each of the second electrodes has a plurality of second intersections formed by intersections of the second main lines and the second sub-lines,
At least one of the plurality of first main lines and the plurality of first minor lines includes a first end line segment extending forward from the first intersection,
At least one of the plurality of second main lines and the plurality of second minor lines includes a second end line segment extending forward from the second intersection,
The first terminal line is a region which is 70% or more of the entire detection region which is a region where the first electrode and the second electrode three-dimensionally intersect, and which is inside the outer peripheral portion of the detection region min and all of the length of the second end segment, upon one side of the unit cell and one pitch, 2 pitch Ri less in length der, a plurality of the first end segment and a plurality of the some of the lengths of the second end segment is 1 pitch or 1/2 pitch length less than der Ru touch sensor electrodes. At least one of the first terminal line segments of the first minor line where the end intersects the first main line facing the first gap of the first electrode, and the end is the first of the second electrode 2. The touch sensor according to claim 1, wherein at least one of at least one of the second end line segments of the second subline crossing the second main line facing the gap has a length of 2 pitches or less. Electrode. A portion of the plurality of first electrodes and the plurality of second electrodes overlapping with each other is a capacitance detection unit,
At least one of the first terminal line segments at both ends of the first main line straddling two adjacent capacitance detection sections, and both ends of the second main line straddling two adjacent capacitance detection sections The electrode for a touch sensor according to claim 1, wherein at least one of at least one of the second terminal line segments has a length of 2 pitches or less. At least one of at least one of the first terminal line segments at both ends of at least one of the first minor lines, and at least one of the second terminal line segments at both ends of at least one of the second minor lines The electrode for a touch sensor according to any one of claims 1 to 3, wherein the length of the pitch is 2 pitch or less. The electrode for a touch sensor according to any one of claims 1 to 4 , wherein the unit cell is a square. An electrode for a touch sensor comprising: a plurality of first electrodes; a plurality of second electrodes; and a transparent dielectric layer sandwiched between the plurality of first electrodes and the plurality of second electrodes.
A cover layer covering the touch sensor electrode;
A peripheral circuit for measuring a capacitance between the first electrode and the second electrode;
The touch sensor electrode is
It is an electrode for touch sensors according to any one of claims 1 to 5. A touch panel. Display panel to display information,
A touch panel transmitting the information displayed by the display panel;
A drive circuit for driving the touch panel;
The touch panel is the touch panel according to claim 6 .

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