JP6391978B2 - Touch sensor electrode, touch panel, and display device - Google Patents

Description

  The present invention relates to a touch sensor electrode including a plurality of electrodes arranged in one direction, a touch panel including a touch sensor electrode, and a display device.

  The touch sensor electrode constituting the touch panel includes a plurality of first electrodes and a plurality of second electrodes on the surface of the substrate. The plurality of first electrodes extend along the vertical direction and are arranged along the horizontal direction. The plurality of second electrodes extend along the horizontal direction and are arranged along the vertical direction.

  For example, the first electrode includes a plurality of first detection units having a rhombus shape, and the plurality of first detection units are continuous along the vertical direction. On the other hand, the second electrode includes a plurality of second detection units having a rhombus shape, and the plurality of second detection units are continuous in the lateral direction. On the surface of the substrate, each of the plurality of second detection units is located in a gap between the first detection units adjacent to each other. And the electrostatic capacitance between the 1st detection part and the 2nd detection part which mutually adjoin on the surface of a board | substrate changes with the finger | toe etc. which are located between these. By detecting such a change in capacitance, the position of a finger or the like is specified (for example, see Patent Document 1).

JP 2010-28115 A

  On the other hand, in the touch sensor electrode described above, almost the entire surface of the substrate is filled with the first detection unit and the second detection unit. Therefore, it is desired that such a touch sensor electrode has high light transmittance.

  An object of the present invention is to provide an electrode for a touch sensor, a touch panel, and a display device that can increase light transmittance.

  One aspect of the electrode for a touch sensor is a dielectric substrate that has a first surface and a second surface opposite to the first surface and transmits light, and a plurality of first electrodes formed on the first surface. A plurality of the first band-shaped electrodes, which are band-shaped electrodes, arranged at intervals along the first arrangement direction, which is one direction, and extend along a second arrangement direction perpendicular to the first arrangement direction; A plurality of second band-shaped electrodes formed on the second surface of the dielectric substrate, the electrodes being arranged at intervals along the second arrangement direction and extending along the first arrangement direction; A second strip electrode. Each of the plurality of first strip-shaped electrodes has a first pattern having a lattice shape including a plurality of first main lines and a plurality of first sub-lines extending along a direction intersecting the first main lines. Each of the plurality of second strip electrodes has a lattice shape composed of a plurality of second main lines and a plurality of second sub-lines extending along a direction intersecting the second main lines. And the first main line and the second main line overlap with each other in a plan view facing the second surface, and the first main line extends along the extending direction of the second main line, and the first main line A portion where the sub-line and the second sub-line overlap each other continues along the extending direction of the second sub-line.

  One aspect of the touch panel includes a plurality of first strip electrodes, a plurality of second strip electrodes, and a dielectric substrate that is sandwiched between the first strip electrodes and the second strip electrodes and transmits light. A sensor electrode; a cover layer covering the touch sensor electrode; and a peripheral circuit for measuring a capacitance between the first strip electrode and the second strip electrode. The touch sensor electrode is the touch sensor electrode.

  One aspect of the display device includes a display panel that displays information, a drive circuit that drives a touch panel, and the touch panel that transmits the information displayed on the display panel, and the touch panel is the touch panel.

  According to the above aspect, the first main line and the second main line overlap each other, and the first sub line and the second sub line overlap each other in a plan view facing the second surface. Therefore, although the touch sensor electrode includes a plurality of first strip electrodes and a plurality of second strip electrodes, the plurality of first strip electrodes and the plurality of first strip electrodes and the plurality of first strip electrodes are disposed in almost the entire plan view facing the first surface. Only one of the second belt-like electrodes blocks light. Therefore, the permeability of the touch sensor electrode is increased.

  In the touch sensor electrode, in the first pattern, the plurality of first main lines extend along a direction that forms an angle smaller than 90 ° with the first arrangement direction, and the plurality of first sub-lines. The line preferably extends along a direction forming an angle smaller than 90 ° with the first arrangement direction.

  In a display device including a touch panel including touch sensor electrodes and a display panel including pixels arranged in a matrix, the display device generally includes a direction parallel to the first array direction and a direction parallel to the second array. The pixel is located. Therefore, as with the touch sensor electrode, each of the first main line and the first sub-line constituting the first pattern extends along a direction that forms an angle smaller than 90 ° with the first arrangement direction. If present, the black matrix that partitions the pixels and the lattice of each pattern intersect each other. Therefore, moire is less likely to occur on the display surface of the display device.

  In the touch sensor electrode, the line width of the second main line is larger than the line width of the first main line, and the line width of the second sub line is larger than the line width of the first sub line. It is preferable.

  According to the touch sensor electrode, the first main line hardly protrudes from the second main line and the first sub line hardly protrudes from the second sub line in a plan view facing the second surface. Therefore, the region defined by the lattice of the second pattern is difficult to narrow due to the overlap between the first pattern and the second pattern. Therefore, a decrease in the permeability of the touch sensor electrode can be suppressed.

  In the touch sensor electrode, the line width of the first main line and the line width of the second main line are equal to each other, and the line width of the first sub line and the line width of the second sub line are Are preferably equal to each other.

  According to the touch sensor electrode, the first strip electrode and the second strip electrode can have the same shape. Therefore, the touch sensor electrode can be easily manufactured as compared with the configuration in which the shape of the first strip electrode and the shape of the second strip electrode are different.

  In the touch sensor electrode, each of the first main line, the first sub line, the second main line, and the second sub line is made of metal, and the first main line and the first sub line The surface exposed on the first surface has a metallic luster, and the surface exposed on the second surface in the second main line and the second subline is preferably black.

  According to the touch sensor electrode, the first main line overlaps the second main line, and the first sub-line overlaps the second sub-line. Therefore, when the first surface and the second surface of the dielectric substrate are visually recognized, the first pattern is hardly visually recognized. At this time, since the surface of the second main line and the surface of the second subline are black, the second pattern has light diffusion due to both the metallic luster in the first pattern and the metallic luster in the second pattern. It becomes difficult to be visually recognized only by the black color.

  In the touch sensor electrode, in the second strip electrodes adjacent to each other, the second main line of the other second strip electrode is positioned on an extension line of the second main line of one of the second strip electrodes. And the second sub-line of the other second strip electrode is positioned on the extension of the second sub-line of one of the second strip electrodes, and in plan view facing the second surface The first pattern has a shape connecting the one second main line and the other second main line, and connecting the one second sub line and the other second sub line. It is preferable.

  According to the touch sensor electrode, the second main line of one second strip electrode and the second main line of the other second strip electrode are visually recognized as one line in a plan view facing the second surface. Are connected by the first pattern. Also, in a plan view facing the second surface, the second sub-line of one second strip electrode and the second sub-line of the other second strip electrode are also visually recognized as one line. Connected by the first pattern. Therefore, the occurrence of moire in the touch sensor electrode can be suppressed.

In the touch sensor electrode, it is preferable that a gap between the second strip electrodes adjacent to each other is located at a portion other than an intersection of an extension line of the second main line and an extension line of the second sub-line.
According to the touch sensor electrode, since the intersection of the extension line of the second main line and the extension line of the second sub-line is located at a position other than the gap between the second strip electrodes adjacent to each other, In a plan view facing each other, it is easy to connect the gap between the second strip electrodes adjacent to each other by the first pattern.

  The touch sensor electrode may further include a dummy pattern on one of the first surface and the second surface, and the dummy pattern is adjacent to each other in a plan view facing the second surface. It is preferable to be located at the intersection of the gap between the first strip electrodes and the gap between the second strip electrodes adjacent to each other.

  According to the touch sensor electrode, the intersection between the gap between the first strip electrodes adjacent to each other and the gap between the second strip electrodes adjacent to each other is difficult to be visually recognized by the dummy pattern. Also, the occurrence of moire can be suppressed.

  In the touch sensor electrode, the plurality of second main lines includes a wiring electrically connected to the pad, a plurality of dummy wirings arranged along the wiring and not electrically connected to the pad, Preferably, the second pattern has a shape connecting the dummy wirings in a plan view facing the second surface.

  According to the touch sensor electrode, the number of the second main lines connected to the pad can be changed by setting the number of dummy wirings, so that the shape of the first pattern and the shape of the second pattern are greatly increased. Without changing, it is possible to change the capacitance between the first strip electrode and the second strip electrode.

In the touch sensor electrode, the dielectric substrate is preferably formed of a single substrate.
According to the touch sensor electrode, as a touch sensor electrode manufacturing method, a plurality of first strip electrodes and a plurality of second strip electrodes are obtained by simultaneously exposing two opposing surfaces of a dielectric substrate. A forming method can be employed. Thereby, in the plan view facing the second surface, a shift between the first strip electrode and the second strip electrode that overlap each other is less likely to occur. As a result, the light permeability of the touch sensor electrode is increased.

  The touch sensor electrode, comprising: a first base material having a surface on which a plurality of the first belt-like electrodes are located; and a second base material having a surface on which the plurality of the second belt-like electrodes are located, It is preferable that the back surface of the second base material overlaps the surface of the first base material, and the dielectric substrate is the second base material.

  The touch sensor electrode, comprising: a first base material having a surface on which a plurality of the first belt-like electrodes are located; and a second base material having a surface on which the plurality of the second belt-like electrodes are located, It is preferable that the back surface of the second base material overlaps the back surface of the first base material, and the dielectric substrate includes the first base material and the second base material.

  One aspect of the touch panel includes a plurality of first strip electrodes, a plurality of second strip electrodes, and a dielectric substrate that is sandwiched between the first strip electrodes and the second strip electrodes and transmits light. A sensor electrode; a cover layer covering the touch sensor electrode; and a peripheral circuit for measuring a capacitance between the first strip electrode and the second strip electrode. The touch sensor electrode is the touch sensor electrode, and the plurality of second strip electrodes are located between the dielectric substrate and the cover layer.

  One aspect of the touch panel includes a plurality of first strip electrodes, a plurality of second strip electrodes, and a dielectric substrate that is sandwiched between the first strip electrodes and the second strip electrodes and transmits light. A sensor electrode; a cover layer covering the touch sensor electrode; and a peripheral circuit for measuring a capacitance between the first strip electrode and the second strip electrode. The touch sensor electrode is the touch sensor electrode, the plurality of second strip electrodes are positioned between the dielectric substrate and the cover layer, and a line width of the first main line is the first width It is larger than the line width of the two main lines, and the line width of the first sub line is larger than the line width of the second sub line.

  According to the present invention, it is possible to improve light transmittance.

It is a top view which shows the display apparatus in 1st Embodiment which actualized this invention, Comprising: It is a figure cut out and shown in order that a part of mutually different component overlaps. 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 of 1st Embodiment. It is a top view which shows arrangement | positioning of the drive electrode in 1st Embodiment. It is a top view which shows arrangement | positioning of the sensing electrode in 1st Embodiment. It is a top view which shows the relationship of arrangement | positioning of the drive electrode and sensing electrode in 1st Embodiment. It is a figure which shows the relationship between the line width of the electrode line which comprises the drive electrode in 1st Embodiment, and the line width of the electrode line which comprises a sensing electrode. It is a figure which shows the relationship between the line width of the electrode line which comprises the drive electrode in 1st Embodiment, and the line width of the electrode line which comprises a sensing electrode. It is a top view which shows arrangement | positioning of the drive electrode in 2nd Embodiment which actualized this invention. It is a top view which shows arrangement | positioning of the drive electrode in the modification of 2nd Embodiment. It is a top view which shows arrangement | positioning of the sensing electrode in 3rd Embodiment which actualized this invention. It is a top view which shows the relationship of arrangement | positioning of the drive electrode and sensing electrode in 3rd Embodiment. It is a top view which shows arrangement | positioning of the sensing electrode in the modification of 3rd Embodiment. It is a top view which shows arrangement | positioning of the drive electrode in 4th Embodiment which actualized this invention. It is a top view which shows arrangement | positioning of the sensing electrode in 4th Embodiment. It is a top view which shows the relationship of arrangement | positioning of the drive electrode and sensing electrode in 4th Embodiment. It is a top view which shows arrangement | positioning of the drive electrode in 5th Embodiment which actualized this invention. It is a top view which shows arrangement | positioning of the sensing electrode in 5th Embodiment. It is a top view which shows the relationship of arrangement | positioning of the drive electrode and sensing electrode in 5th Embodiment. It is sectional drawing which shows the cross-section of the display apparatus in a modification. It is sectional drawing which shows the cross-section of the display apparatus in a modification.

[First Embodiment]
A first embodiment in which an electrode for a touch sensor, a touch panel, and a display device are embodied will be described with reference to FIGS. Hereinafter, the configuration of the display device, the electrical configuration of the display device, the configuration of the drive electrode, the configuration of the sensing electrode, the configuration of the touch sensor electrode, and the operation of the touch sensor electrode will be described in order.

[Display device]
The configuration of the display device will be described with reference to FIG. In FIG. 1, the drive electrode and the sensing electrode are exaggerated for convenience of explanation of the configuration of the drive electrode formed on the drive surface and the sensing electrode formed on the sensing surface.

  As shown in FIG. 1, the display device is a laminated body in which a display panel 10 that is a liquid crystal panel and a touch panel 20 are bonded together by a single transparent adhesive layer, and includes a drive circuit that drives the touch panel 20. . A display surface 10S formed in a rectangular shape is partitioned on the surface of the display panel 10, and information such as an image based on image data from the outside is displayed on the display surface 10S. Note that if the relative position between the display panel 10 and the touch panel 20 is fixed by another configuration such as a housing, a transparent adhesive layer for bonding the display panel 10 and the touch panel 20 is omitted. Also good.

  The touch panel 20 is a capacitive touch panel, and is a laminated body in which the touch sensor electrode 21 and the cover layer 22 are bonded together by the transparent adhesive layer 23, and transmits information displayed on the display panel 10. The cover layer 22 is formed of a glass substrate, a resin film, or the like, and the surface of the cover layer 22 opposite to the transparent adhesive layer 23 functions as the operation surface 20S of the touch panel 20. The transparent adhesive layer 23 has a light-transmitting property that transmits an image displayed on the display surface 10S. For the transparent adhesive layer 23, for example, a polyether adhesive or an acrylic adhesive is used.

  The transparent dielectric substrate 33 constituting the touch sensor electrode 21 is superimposed on the entire display surface 10S formed on the display panel 10, and transmits an image formed on the display surface 10S. The transparent dielectric substrate 33 is composed of a base material such as a transparent resin film such as polyethylene terephthalate or a transparent glass substrate. The transparent dielectric substrate 33 has a light transmissive property for transmitting an image displayed on the display surface 10S and a relative dielectric constant suitable for detecting a capacitance between the electrodes.

  A surface of the transparent dielectric substrate 33 facing the display panel 10 is set as a drive surface 31S that is an example of a first surface. On the drive surface 31S of the transparent dielectric substrate 33, a plurality of pads 31P are arranged at intervals along the first arrangement direction D1, which is one direction, and the plurality of drive electrode bands 31B are arranged in the first arrangement direction D1. Are lined up at intervals. Each of the plurality of drive electrode bands 31B has a band shape extending toward the pad 31P along the second arrangement direction D2 orthogonal to the first arrangement direction D1.

  Each of the plurality of drive electrode bands 31B is connected to one pad 31P in order from the drive electrode band 31B located at one of the two ends in the first arrangement direction D1. One pad 31P and one drive electrode band 31B for each pad 31P constitute one drive electrode 31DP which is an example of a first band electrode, and the plurality of drive electrodes 31DP are arranged in the first arrangement direction. They are arranged at intervals along D1.

  A metal film such as copper or aluminum is used for each of the plurality of drive electrodes 31DP. Each of the drive electrodes 31DP composed of one pad 31P and one drive electrode band 31B is individually connected to the selection circuit 34 and receives a drive signal supplied by the selection circuit 34, whereby the selection circuit 34 Selected.

  The surface of the transparent dielectric substrate 33 opposite to the display panel 10 is set as a sensing surface 33S which is an example of the second surface. The sensing surface 33S of the transparent dielectric substrate 33 includes a plurality of pads 33P. A plurality of sensing electrode bands 33B are arranged at intervals along the second arrangement direction D2, and the plurality of sensing electrode bands 33B are arranged at intervals along the second arrangement direction D2. Each of the plurality of sensing electrode bands 33B has a band shape extending toward the pad 33P along the first arrangement direction D1.

  Each of the plurality of sensing electrode bands 33B is connected to one pad 33P in order from the sensing electrode band 33B located at one of the two ends in the second arrangement direction D2. One pad 33P and one sensing electrode band 33B for each one pad 33P constitute one sensing electrode 33SP which is an example of a second band electrode, and the plurality of sensing electrodes 33SP are arranged in the second arrangement direction. They are arranged at intervals along D2.

  For each of the plurality of sensing electrodes 33SP, a metal film such as copper or aluminum is used in the same manner as the electrode wires constituting the drive electrode 31DP described above. Each of the sensing electrodes 33SP composed of one pad 33P and one sensing electrode band 33B is individually connected to the detection circuit 35, and the voltage for each sensing electrode 33SP is detected by the detection circuit 35. The touch sensor electrode 21, the selection circuit 34, and the detection circuit 35 are examples of a touch sensor.

The sensing surface 33S, the plurality of sensing electrode strips 33B, and the plurality of pads 33P are bonded to the cover layer 22 by the transparent adhesive layer 23 described above.
That is, as shown in FIG. 2, in the touch panel 20, the drive electrode 31 DP, the transparent dielectric substrate 33, the sensing electrode 33 SP, the transparent adhesive layer 23, and the cover layer 22 are located in order from components close to the display panel 10. Yes.

  The transparent adhesive layer 23 is located between the sensing electrode 33SP and the cover layer 22 while covering the surroundings of each electrode line constituting the sensing electrode 33SP and filling between adjacent electrode lines. In these components, the transparent adhesive layer 23 may be omitted.

  In the display panel 10, a plurality of components constituting the display panel 10 are arranged in the following order from the components far from the touch panel 20. That is, 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, and the upper polarizing plate 17 are arranged in order from the components far from the touch panel 20. positioned. Among these, in the TFT layer 13, the pixel electrodes constituting the sub-pixels are located in a matrix. In the color filter layer 15, the black matrix defines a plurality of regions having a rectangular shape facing each of the sub-pixels, and white light is red, green, and blue in each region defined by the black matrix. A colored layer that changes to light of any color is located.

Note that the display panel 10 does not have to be a liquid crystal panel, and may be, for example, an organic EL panel.
In the touch panel 20, the plurality of drive electrode strips 31B and the plurality of pads 31P may be simultaneously formed by etching one thin film formed on the drive surface 31S by etching through a mask. Alternatively, the plurality of drive electrode bands 31B and the plurality of pads 31P may be formed from different materials by different processes. The plurality of drive electrode bands 31B and the plurality of pads 31P are formed on another base material different from the transparent dielectric substrate 33, and the plurality of drive electrode bands 31B and the plurality of pads 31P You may form by affixing on the transparent dielectric substrate 33 from a base material.

  In the touch panel 20, the plurality of sensing electrode bands 33B and the plurality of pads 33P may be simultaneously formed by etching one thin film formed on the sensing surface 33S by etching through a mask. Alternatively, the plurality of sensing electrode strips 33B and the plurality of pads 33P may be formed of different materials by different processes. The plurality of sensing electrode strips 33B and the plurality of pads 33P are formed on another base material different from the transparent dielectric substrate 33, and the plurality of sensing electrode strips 33B and the plurality of pads 33P You may form by affixing on the transparent dielectric substrate 33 from a base material.

[Electrical configuration of touch panel]
The electrical configuration of the touch panel 20 will be described with reference to FIG. Hereinafter, as an example of the capacitive touch panel 20, an 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 control unit 36. The selection circuit 34 can be connected to the plurality of drive electrodes 31DP, the detection circuit 35 can be connected to the plurality of sensing electrodes 33SP, and the control unit 36 includes the selection circuit 34 and the detection circuit 35. And connected to.

  The control unit 36 generates and outputs a start timing signal for causing the selection circuit 34 to start generating a drive signal for each drive electrode 31DP. The control unit 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 toward the nth drive electrode 31DP.

  On the other hand, the control unit 36 generates and outputs a start timing signal for causing the detection circuit 35 to start detecting the current flowing through each sensing electrode 33SP. The control unit 36 generates and outputs a scanning timing signal for causing the detection circuit 35 to sequentially scan the detection target from the first sensing electrode 33SP toward the nth sensing electrode 33SP.

  The selection circuit 34 starts generating a drive signal based on the start timing signal output from the control unit 36, and sets the output destination of the drive signal to the first drive electrode based on the scanning timing signal output from the control unit 36. Scanning from 31DP1 toward the nth drive electrode 31DPn.

  The detection circuit 35 includes a signal acquisition unit 35a and a signal processing unit 35b. Based on the start timing signal output from the control unit 36, the signal acquisition unit 35a starts acquiring a current signal that is an analog signal generated in each sensing electrode 33SP. Then, the signal acquisition unit 35a scans the current signal acquisition source from the first sensing electrode 33SP1 to the nth sensing electrode 33SPn based on the scanning timing signal output from the control unit 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 control unit 36. As described above, the selection circuit 34 and the detection circuit 35 generate the voltage signal from the current signal that changes in accordance with the change in the capacitance, thereby changing the capacitance between the drive electrode 31DP and the sensing electrode 33SP. Is measuring. The selection circuit 34 and the detection circuit 35 are examples of peripheral circuits.

The control unit 36 detects a position touched by the user on the touch panel 20 based on the voltage signal output from the signal processing unit 35b.
The touch panel 20 is not limited to the above-described mutual capacitive touch panel 20, and may be a self capacitive touch panel.

[Drive electrode]
The configuration of the drive electrode will be described with reference to FIG. FIG. 4 is a plan view showing a planar structure of the drive electrode 31DP. In FIG. 4, the line width of the electrode line is exaggerated for convenience of explaining the arrangement of the electrode lines constituting the drive electrode band 31B. .

  As shown in FIG. 4, one drive electrode 31DP includes one pad 31P and a drive electrode band 31B having a lattice shape and connected to the pad 31P. The pad 31P has a plate shape extending along the first arrangement direction D1, and the width of the pad 31P along the first arrangement direction D1 is the drive pad width WPD.

  The drive electrode band 31B includes a plurality of first drive lines 41 having a linear shape extending along a first extending direction E1 intersecting the first arrangement direction D1, and a second extending perpendicular to the first extending direction E1. And a plurality of second drive lines 42 having a linear shape extending along the direction E2. The first drive line 41 is an example of a first main line, the second drive line 42 is an example of a first sub line, and the first drive line 41 and the second drive line 42 connect the drive electrode band 31B. It is the electrode wire which comprises.

  One drive electrode 31DP is a strip-like electrode extending along the second arrangement direction D2, and the plurality of drive electrodes 31DP are arranged side by side with a drive electrode interval GDP that is a predetermined interval along the first arrangement direction D1. Yes.

  In a plurality of first drive lines 41 constituting one drive electrode band 31B, a first extending direction E1 that is a direction in which each first drive line 41 extends is a facing angle that is a predetermined angle with respect to the first arrangement direction D1. θ1 is formed. The facing angle θ1 is, for example, 45 °. Each first drive line 41 extends along the first extending direction E1 within the region partitioned by the drive pad width WPD in the first arrangement direction D1. In the plurality of first drive lines 41, two first drive lines 41 adjacent to each other in the second arrangement direction D2 are spaced apart from each other along a second extending direction E2 orthogonal to the first extending direction E1. Are arranged with a first drive interval GD1 therebetween.

  Among the plurality of first drive lines 41, two first drive lines 41 or three first drive lines 41, one of which is closest to the pad 31P, in the second arrangement direction D2. However, it is directly connected to the pad 31P.

  On the other hand, in the plurality of second drive lines 42 constituting one drive electrode band 31B, the second extending direction E2, which is the extending direction of each second drive line 42, is orthogonal to the first extending direction E1, In addition, an opposing angle θ1 is formed with respect to the first arrangement direction D1. Each second drive line 42 extends along the second extending direction E2 inside the region partitioned by the drive pad width WPD in the first arrangement direction D1. In the plurality of second drive lines 42, two second drive lines 42 adjacent to each other in the first arrangement direction D1 have a second drive interval GD2 that is a predetermined interval along the first extending direction E1. Are lined up. For example, the second drive interval GD2 is equal to the first drive interval GD1.

  Among the plurality of second drive lines 42, in the second arrangement direction D2, either one of the two end portions is the two second drive lines 42 closest to the pad 31P, or the three second drive lines 42. However, it is directly connected to the pad 31P. Note that two second drive lines 42 are connected to the pads 31P to which the three first drive lines 41 are connected, and three first pads are connected to the pads 31P to which the two first drive lines 41 are connected. Two drive lines 42 are connected.

  In one drive electrode band 31B, each first drive line 41 intersects with at least one second drive line 42, and each second drive line 42 intersects with at least one first drive line 41. doing. Accordingly, the plurality of first drive lines 41 and the plurality of second drive lines 42 form a lattice shape including a plurality of unit lattices having a rectangular shape and a part of the unit lattices.

  Thus, in the drive electrode 31DP, the plurality of first drive lines 41 arranged with the first drive interval GD1 in the second extending direction E2 and the second drive interval GD2 arranged in the first extending direction E1 are arranged. A drive pattern having a lattice shape is formed by the plurality of second drive lines 42. The drive pattern is an example of a first pattern.

  In each drive electrode 31DP, each first drive line 41 is located on the same straight line as one first drive line 41 of another drive electrode 31DP adjacent to each other with a drive electrode interval GDP. That is, in the two drive electrodes 31DP adjacent to each other with a drive electrode interval GDP, each first drive line 41 in one drive electrode 31DP is on an extension line of the different first drive lines 41 in the other drive electrode 31DP. positioned.

  On the other hand, in each drive electrode 31DP, each second drive line 42 is positioned on the same straight line as one second drive line 42 of another drive electrode 31DP adjacent to the drive electrode interval GDP. That is, in the two drive electrodes 31DP adjacent to each other with a drive electrode interval GDP, each second drive line 42 in one drive electrode 31DP is on an extension line of the different second drive line 42 in the other drive electrode 31DP. positioned.

  A straight line extending along the second arrangement direction D2 in the two-dot chain line shown in FIG. 4 is a straight line for each drive electrode 31DP, and is a straight line connecting the ends of the one drive electrode band 31B in the first arrangement direction D1. is there. A region extending along the second arrangement direction D2 and sandwiched between two adjacent two-dot chain lines indicates a drive electrode line region SD that is a range occupied by one drive electrode band 31B. On the other hand, the straight line extending along the first arrangement direction D1 in the two-dot chain line shown in FIG. 4 is a straight line for each sensing electrode 33SP, and the end of the one sensing electrode band 33B in the second arrangement direction D2 is It is a straight line that connects. A region extending in the first arrangement direction D1 and sandwiched between two adjacent two-dot chain lines indicates a sensing electrode line region SS that is a range occupied by one sensing electrode band 33B.

  The gap between the two drive electrode line regions SD on the drive surface 31S is overlapped with a plurality of gaps that are three-dimensionally intersecting with the gap between the two sensing electrode line regions SS in plan view facing the drive surface 31S. The part 21G is located. The dummy pattern 43 is located in a portion of the plurality of gap overlapping portions 21G that does not overlap with either the drive electrode 31DP or the sensing electrode 33SP. The dummy pattern 43 has a shape corresponding to a part of the sensing pattern of the sensing electrode 33SP and is not connected to the two drive electrodes 31DP sandwiching the dummy pattern 43.

  For example, when the gap overlapping portion 21G is positioned between the two first drive lines 41 in the first extending direction E1 and between the two second drive lines 42 in the second extending direction E2, The dummy pattern 43 has a shape in which a line segment extending along the first extending direction E1 intersects a line segment extending along the second extending direction E2.

  The line width of the first drive line 41 is a drive line width WLD that is a predetermined line width, and the line width of the first drive line 41 and the line width of the second drive line 42 are equal to each other. The drive line width WLD is 3 μm, for example.

  In the drive electrodes 31DP adjacent to each other in the first arrangement direction D1, a gap between the two drive electrode bands 31B may be formed simultaneously with the plurality of drive electrode bands 31B. When a gap between the two drive electrode bands 31B is formed simultaneously with the plurality of drive electrode bands 31B, for example, an opening corresponding to the gap between the plurality of drive electrode bands 31B and the two drive electrode bands 31B is formed. A sputtering method using a mask having the same is used.

  Alternatively, in the drive electrodes 31DP adjacent to each other in the first arrangement direction D1, a gap between the two drive electrode bands 31B is formed after a plurality of electrode lines for forming the plurality of drive electrode bands 31B are formed. May be. When the gap between the two drive electrode bands 31B is formed after the plurality of electrode lines are formed, first, the plurality of first drive lines 41 and the plurality of second drive lines 42 are handled by various methods. Then, a part of the plurality of electrode lines is cut by an etching method or a laser ablation method. As a result, a gap is formed between the drive electrodes 31DP adjacent to each other in the first arrangement direction D1, and the plurality of first drive lines 41 and the plurality of second drive lines 42 constituting each drive electrode band 31B. And are formed.

[Sensing electrode]
The configuration of the sensing electrode will be described with reference to FIG. FIG. 5 is a plan view showing a planar structure of the sensing electrode 33SP. In FIG. 5, the line widths of the electrode lines are exaggerated for convenience of explaining the arrangement of the electrode lines constituting the sensing electrode band 33B. .

  As shown in FIG. 5, one sensing electrode 33SP includes one pad 33P and a sensing electrode band 33B having a lattice shape and connected to the pad 33P. The pad 33P has a plate shape extending along the second arrangement direction D2, and the width of the pad 33P along the second arrangement direction D2 is the sensing pad width WPS.

  The sensing electrode band 33B includes a plurality of first sensing lines 51 having a linear shape extending along a first extending direction E1 intersecting the second arrangement direction D2, and a second extending perpendicular to the first extending direction E1. And a plurality of second sensing lines 52 having a linear shape extending along the direction E2. The first sensing line 51 is an example of a second main line, the second sensing line 52 is an example of a second sub line, and the first sensing line 51 and the second sensing line 52 constitute a sensing electrode band 33B. It is an electrode wire.

  One sensing electrode 33SP is a strip electrode extending along the first arrangement direction D1, and the plurality of sensing electrodes 33SP are arranged along the second arrangement direction D2 with a sensing electrode interval GSP being a predetermined interval. Yes. The sensing electrode interval GSP is equal to the drive electrode interval GDP, which is an interval between two drive electrodes 31DP adjacent to each other in the first arrangement direction D1.

  In a plurality of first sensing lines 51 constituting one sensing electrode band 33B, a first extending direction E1 that is a direction in which each first sensing line 51 extends forms an opposing angle θ1 with the second arrangement direction D2. Yes. Each first sensing line 51 extends along the first extending direction E1 within the region partitioned by the sensing pad width WPS in the second arrangement direction D2. In the plurality of first sensing lines 51, two first sensing lines 51 adjacent to each other in the first arrangement direction D1 have a first sensing interval GS1 that is a predetermined interval along the second extending direction E2. Are lined up. The first sensing interval GS1 is substantially equal to the first drive interval GD1 in the drive electrode 31DP.

  Among the plurality of first sensing lines 51, in the first arrangement direction D1, two of the first sensing lines 51 or one of the two end parts closest to the pad 33P or the three first sensing lines 51 are arranged. However, it is directly connected to the pad 33P.

  On the other hand, in the plurality of second sensing lines 52 constituting one sensing electrode band 33B, the second extending direction E2 that is the direction in which each second sensing line 52 extends is orthogonal to the first extending direction E1, In addition, an opposing angle θ1 is formed with the second arrangement direction D2. Each second sensing line 52 extends along the second extending direction E2 inside the region partitioned by the sensing pad width WPS in the second arrangement direction D2. In the plurality of second sensing lines 52, two second sensing lines 52 adjacent to each other in the second arrangement direction D2 have a second sensing interval GS2 that is a predetermined interval along the first extending direction E1. Are lined up. The second sensing interval GS2 is equal to the first sensing interval GS1, for example.

  Among the plurality of second sensing lines 52, in the first arrangement direction D1, two second sensing lines 52 or three second sensing lines 52, one of the two end portions being closest to the pad 33P. However, it is directly connected to the pad 33P. Note that two second sensing lines 52 are connected to the pads 33P to which the three first sensing lines 51 are connected, and three third sensing lines 51 are connected to the pads 33P to which the two first sensing lines 51 are connected. Two sensing wires 52 are connected.

  In one sensing electrode band 33B, each first sensing line 51 intersects with at least one second sensing line 52, and each second sensing line 52 intersects with at least one first sensing line 51. doing. Thereby, the plurality of first sensing lines 51 and the plurality of second sensing lines 52 form a lattice shape including a plurality of unit lattices having a rectangular shape and a part of the unit lattices.

  Thus, in the sensing electrode 33SP, the plurality of first sensing lines 51 arranged with the first sensing interval GS1 in the second extending direction E2 and the second sensing interval GS2 in the first extending direction E1 are arranged. A plurality of second sensing lines 52 form a sensing pattern having a lattice shape. The sensing pattern is an example of a second pattern.

  In each sensing electrode 33SP, each first sensing line 51 is located on the same straight line as one first sensing line 51 of another sensing electrode 33SP adjacent to each other with a sensing electrode interval GSP. That is, in the two sensing electrodes 33SP that are adjacent to each other with a sensing electrode interval GSP, each first sensing line 51 in one sensing electrode 33SP is on an extension line of the different first sensing lines 51 in the other sensing electrode 33SP. positioned.

  On the other hand, in each sensing electrode 33SP, each 2nd sensing line 52 is located on the same straight line as one 2nd sensing line 52 which other sensing electrodes 33SP which adjoins at intervals of sensing electrode space GSP. That is, in the two sensing electrodes 33SP adjacent to each other with the sensing electrode interval GSP therebetween, each second sensing line 52 in one sensing electrode 33SP is on an extension line of the different second sensing line 52 in the other sensing electrode 33SP. positioned.

  The line width of the first sensing line 51 is a sensing line width WLS that is a predetermined line width, and the line width of the first sensing line 51 and the line width of the second sensing line 52 are equal to each other. The line width of the first sensing line 51 is, for example, 7 μm.

  The forming material of the plurality of first sensing wires 51 and the plurality of second sensing wires 52 is, for example, copper. Of the surface of each first sensing line 51 and each second sensing line 52, the portion exposed from the sensing surface 33S is black. Of each of the first sensing lines 51 and each of the second sensing lines 52, a black portion is a film formed by a blackening process. The blackening treatment is, for example, an oxidation treatment or a plating treatment.When the blackening treatment is an oxidation treatment, the film formed by the blackening treatment is a copper oxide film, and when the blackening treatment is a plating treatment, The films formed by the blackening process are various metal films.

  In the sensing electrodes 33SP adjacent to each other in the second arrangement direction D2, a gap between the two sensing electrode bands 33B may be formed simultaneously with the plurality of sensing electrode bands 33B. When the gap between the two sensing electrode bands 33B is formed simultaneously with the plurality of sensing electrode bands 33B, for example, an opening corresponding to the gap between the plurality of sensing electrode bands 33B and the two sensing electrode bands 33B is formed. A sputtering method using a mask having the same is used.

  Alternatively, in the sensing electrodes 33SP adjacent to each other in the second arrangement direction D2, a gap between the two sensing electrode bands 33B is formed after a plurality of electrode lines for forming the plurality of sensing electrode bands 33B are formed. May be. When a gap between the two sensing electrode bands 33B is formed after the plurality of electrode lines are formed, first, the plurality of first sensing lines 51 and the plurality of second sensing lines 52 are handled by various methods. Then, a part of the plurality of electrode lines is cut by an etching method or a laser ablation method. As a result, a gap is formed between the sensing electrodes 33SP adjacent to each other in the second arrangement direction D2, and the plurality of first sensing lines 51 and the plurality of second sensing lines 52 constituting each sensing electrode band 33B. And are formed.

[Touch sensor electrodes]
The touch sensor electrode will be described with reference to FIGS. FIG. 6 is a plan view of the drive electrode 31DP and the sensing electrode 33SP as viewed from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked. In FIG. 6, the line widths of the electrode lines are exaggerated for convenience of explaining the arrangement of the drive electrodes 31DP and the sensing electrodes 33SP.

  7 and 8 show the electrode lines constituting the sensing electrode 33SP for convenience of explaining the relationship between the line width of the electrode line constituting the drive electrode 31DP and the line width of the electrode line constituting the sensing electrode 33SP. The state where the electrode lines constituting the drive electrode 31DP overlap is shown above.

  As shown in FIG. 6, a plurality of cells 21 </ b> C are set in the touch sensor electrode 21. Each cell 21C is a region where one drive electrode 31DP and one sensing electrode 33SP intersect three-dimensionally in plan view facing the sensing surface 33S. And in the electrode 21 for touch sensors, an electrostatic capacitance is formed in the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked.

  Therefore, in each of the plurality of drive electrodes 31DP, the plurality of cells 21C are arranged along the second arrangement direction D2 orthogonal to the first arrangement direction D1 in which the drive electrodes 31DP are arranged. On the other hand, in each of the plurality of sensing electrodes 33SP, the plurality of cells 21C are arranged along the first arrangement direction D1 orthogonal to the second arrangement direction D2 in which the sensing electrodes 33SP are arranged.

  In each cell 21 </ b> C, each of the plurality of first drive lines 41 overlaps with different first sensing lines 51 in plan view facing the sensing surface 33 </ b> S. On the other hand, each of the plurality of second drive lines 42 overlaps with different second sensing lines 52 in a plan view facing the sensing surface 33S.

  In other words, in the touch sensor electrode 21, in the plan view facing the sensing surface 33 </ b> S, the first drive line 41 and the first sensing line 51 overlap each other continuously along the first extending direction E <b> 1. Yes. Moreover, in the electrode 21 for touch sensors, the part which the 2nd drive line 42 and the 2nd sensing line 52 mutually overlap is continuous along the 2nd extension direction E2 in planar view facing the sensing surface 33S. Yes.

  Therefore, in each cell 21C, the space surrounded by each unit grid constituting the sensing electrode band 33B does not overlap with either the first drive line 41 or the second drive line 42 in plan view facing the sensing surface 33S. . Therefore, the light that has entered the touch panel 20 through the display panel 10 passes through the sensing electrode 33SP without being blocked by either the first drive line 41 or the second drive line 42. As a result, the permeability of the touch sensor electrode 21 is increased.

  Further, in the plan view facing the sensing surface 33S, the plurality of first drive lines 41 and the plurality of second drive lines 42 in each cell 21C are not visually recognized. Therefore, in the touch sensor electrode 21, only the surface of the first sensing line 51 having black and the surface of the second sensing line 52 having black are visually recognized.

  Therefore, even if the surface of the first drive line 41 and the surface of the second drive line 42 have a metallic luster, the metallic luster of the first drive line 41 and the second drive line 42 is used in the display device. It is not visible to the person. As a result, since the blackening process is not performed on the surface of the first drive line 41 and the surface of the second drive line 42, the steps necessary for manufacturing the touch sensor electrode 21 can be reduced, and the touch can be performed. The cost for manufacturing the sensor electrode 21 can be reduced.

  Each unit cell constituting the sensing electrode band 33B is inclined by the facing angle θ1 with respect to the first arrangement direction D1, which is the direction in which the plurality of drive electrodes 31DP are arranged, and is the direction in which the plurality of sensing electrodes 33SP are arranged. It is inclined by the facing angle θ1 with respect to the second arrangement direction D2. Here, the black matrix constituting the color filter layer 15 included in the display panel 10 has, for example, a lattice shape including a plurality of unit lattices parallel to the first array direction D1 and the second array direction D2.

  Therefore, the grid shape of the sensing electrode band 33B overlaps the black matrix in a state where the grid shape of the black matrix is inclined by the facing angle θ1. Therefore, it is possible to suppress the occurrence of moire between the lattice shape of the sensing electrode band 33B and the lattice shape of the black matrix.

  On the other hand, two first sensing lines in the first extending direction E1 in the gap between the two sensing electrodes 33SP adjacent to each other in the second arrangement direction D2 except for the gap overlapping portion 21G. A part of the first drive line 41 is located between 51. That is, the drive pattern includes the first sensing line 51 provided in one sensing electrode 33SP and the first sensing line 51 provided in the other sensing electrode 33SP among the two sensing electrodes 33SP adjacent to each other in the second arrangement direction D2. It has a shape that connects

  Similarly, two second sensing lines in the second extending direction E2 in the gap between the two sensing electrodes 33SP adjacent to each other in the second arrangement direction D2 except for the gap overlapping portion 21G. A portion of the second drive line 42 is located between 52. That is, the drive pattern includes the second sensing line 52 provided in one sensing electrode 33SP and the second sensing line 52 provided in the other sensing electrode 33SP among the two sensing electrodes 33SP adjacent to each other in the second arrangement direction D2. It has a shape that connects

  On the other hand, the dummy pattern 43 is located in the gap overlapping portion 21G located between the two drive electrodes 31DP. Therefore, in the plan view facing the sensing surface 33S, the lattice shape composed of unit lattices is formed without any gaps, and therefore, unevenness of transmission or moire occurs inside the sensing surface 33S. Is suppressed.

  As shown in FIG. 7, the sensing line width WLS of the first sensing line 51 is larger than the drive line width WLD of the first drive line 41, and the sensing line width WLS of the second sensing line 52 is the second drive line. The drive line width WLD of the line 42 is larger. Therefore, the position of the straight line passing through the center of the first sensing line 51 in the width direction and the position of the straight line passing through the center of the first drive line 41 in the width direction overlap each other when viewed from the direction facing the sensing surface 33S. At this time, the first drive line 41 is not reliably recognized. Further, the position of the straight line passing through the center in the width direction of the second sensing line 52 and the position of the straight line passing through the center in the width direction of the second drive line 42 overlap each other when viewed from the direction corresponding to the sensing surface 33S. At this time, the second drive line 42 is not visually recognized with certainty.

  Further, as shown in FIG. 8, even if the position of the straight line passing through the center of the first drive line 41 is deviated from the position of the straight line passing through the center of the first sensing line 51 in the width direction, it faces the sensing surface 33S. The first drive line 41 becomes difficult to be seen in a plan view. Further, even if the position of the straight line passing through the center of the second drive line 42 is deviated from the position of the straight line passing through the center of the second sensing line 52 in the width direction, the second drive is viewed in plan view facing the sensing surface 33S. The line 42 is less visible.

  In short, the relative positional relationship between the first drive line 41 and the first sensing line 51 and the relative positional relationship between the second drive line 42 and the second sensing line 52 are opposite to the sensing surface 33S. When viewed from the direction in which it is performed, all of one and all of the other may completely overlap. Moreover, the structure which one part and the other part overlap may be sufficient, and the structure which one part and the other part overlap may be sufficient. In any case, it suffices if the overlapping portions are continuous along the direction in which the electrode lines extend.

  Here, each of the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP is a metal film formed on each of the drive surface 31S and the sensing surface 33S which are surfaces facing each other in one transparent dielectric substrate 33. The case where it forms from is demonstrated. At this time, a plurality of sensing electrodes 33SP are formed from the metal film formed on the sensing surface 33S, and a plurality of drive electrodes 31DP are formed from the metal film formed on the drive surface 31S.

  When the plurality of sensing electrodes 33SP and the plurality of drive electrodes 31DP are formed, first, a resist is applied to each of the metal film formed on the sensing surface 33S and the metal film formed on the drive surface 31S. The Then, with the mask for forming the plurality of sensing electrodes 33SP aligned with the sensing surface 33S, the resist of the sensing surface 33S is exposed, and the plurality of drive electrodes 31DP are formed on the drive surface 31S. The resist on the drive surface 31S is exposed in a state where the mask for alignment is aligned. When both the sensing surface 33S and the drive surface 31S of one transparent dielectric substrate 33 are exposed simultaneously, the shift between the pattern formed on the resist on the sensing surface 33S and the pattern formed on the resist on the drive surface 31S Is about 2 μm in the width direction.

  As described above, the sensing line width WLS at the sensing electrode 33SP is 7 μm, and the drive line width WLD at the drive electrode 31DP is 3 μm. Therefore, even if the position of the drive electrode 31DP is displaced with respect to the position of the sensing electrode 33SP, each of the electrode lines constituting the drive electrode 31DP constitutes the sensing electrode 33SP that overlaps with the transparent dielectric substrate 33 in plan view. It is possible to reliably prevent the electrode wire from protruding in the width direction.

As described above, according to the first embodiment, the effects listed below can be obtained.
(1) In a plan view facing the sensing surface 33S, the first sensing line 51 and the first drive line 41 overlap each other in the cell 21C, and the second sensing line 52 and the second drive line 42 are The cells 21C overlap each other. Therefore, although the touch sensor electrode 21 includes a plurality of drive electrodes 31DP and a plurality of sensing electrodes 33SP, only the plurality of sensing electrodes 33SP blocks light in almost the entire plan view facing the sensing surface 33S. . Therefore, the transparency of the touch sensor electrode 21 is increased.

  (2) If each of the first drive line 41 and the second drive line 42 constituting the drive pattern is configured to extend along the direction in which the opposing angle θ1 smaller than 90 ° is formed with the first arrangement direction D1, The black matrix that partitions the pixels and the grid of the drive pattern intersect each other. Therefore, moire is less likely to occur on the display surface 10S of the display device.

  (3) The line width of the first sensing line 51 is larger than the line width of the first drive line 41, and the line width of the second sensing line 52 is larger than the line width of the second drive line 42. Therefore, the first drive line 41 does not easily protrude from the first sensing line 51 and the second drive line 42 does not easily protrude from the second sensing line 52 in a plan view facing the sensing surface. Therefore, the region defined by the unit lattice of the sensing pattern is less likely to be narrowed by the drive pattern when viewed from the direction facing the sensing surface 33S. Therefore, a decrease in the permeability of the touch sensor electrode 21 is suppressed.

  (4) Since the surface of the first sensing line 51 and the surface of the second sensing line 52 are black, both the metallic luster in the drive pattern and the metallic luster in the sensing pattern are visually recognized only by the black color of the sensing pattern. It becomes difficult.

The first embodiment described above can be implemented with appropriate modifications as follows.
The surface of the first sensing line 51 and the surface of the second sensing line 52 are black, while the surface of the first drive line 41 and the surface of the second drive line 42 have a metallic luster. Not limited to this, the surface of the first drive line 41 and the surface of the second drive line 42 may also be black. At least one of the first drive line 41, the second drive line 42, the first sensing line 51, and the second sensing line 52 may have a metallic luster, or may have a light transmission property. At this time, the electrode wire forming material having optical transparency includes a metal oxide film such as zinc oxide, and a metal such as indium, tin, gallium, and zinc such as indium tin oxide and indium gallium zinc oxide. A complex oxide film containing an oxide is used. In addition, silver nanowire and a conductive polymer film are used for the electrode wire which has metallic luster. In addition, the electrode wire having black is not limited to a metal wire subjected to blackening treatment, and a conductive film such as a graphene film is also used.

  The line width of the first sensing line 51 and the line width of the second sensing line 52 may be smaller than 7 μm or larger than 7 μm. Further, the line width of the first sensing line 51 and the line width of the second sensing line 52 may be different from each other. In short, the line width of the first sensing line 51 constituting the sensing electrode 33SP is larger than the line width of the first drive line 41, and the line width of the second sensing line 52 is larger than the line width of the second drive line 42. Can be obtained, the effect according to the above-mentioned (3) can be obtained.

  The line width of the first drive line 41 and the line width of the second drive line 42 may be smaller than 3 μm or larger than 3 μm. Further, the line width of the first drive line 41 and the line width of the second drive line 42 may be different from each other. In short, the line width of the first sensing line 51 constituting the sensing electrode 33SP is larger than the line width of the first drive line 41, and the line width of the second sensing line 52 is larger than the line width of the second drive line 42. Can be obtained, the effect according to the above-mentioned (3) can be obtained.

  The line width of the first sensing line 51 is larger than the line width of the first drive line 41. Not limited to this, the line width of the first sensing line 51 and the line width of the first drive line 41 may be equal. At this time, the line width of the second sensing line 52 may be larger than the line width of the second drive line 42 or may be equal to the line width of the second drive line 42.

  In particular, the line width of the first drive line 41 and the line width of the first sensing line 51 are equal to each other, and the line width of the second drive line 42 and the line width of the second sensing line 52 are equal to each other. Accordingly, the drive electrode 31DP and the sensing electrode 33SP can have the same shape. Therefore, the touch sensor electrode 21 can be easily manufactured as compared with the configuration in which the drive electrode 31DP and the sensing electrode 33SP have different shapes.

  The line width of the second sensing line 52 is larger than the line width of the second drive line 42. Not limited to this, the line width of the second sensing line 52 and the line width of the second drive line 42 may be equal. At this time, the line width of the first sensing line 51 may be larger than the line width of the first drive line 41 or may be equal to the line width of the first drive line 41.

  The first drive line 41 may have a linear shape extending along the first arrangement direction D1, and the second drive line 42 may have a linear shape extending along the second arrangement direction D2. In this case, the first sensing line 51 has a linear shape extending along the first arrangement direction D1, and the second sensing line 52 has a linear shape extending along the second arrangement direction D2. That's fine. In such a configuration, the drive electrode band 31B has a lattice shape orthogonal to each of the first arrangement direction D1 and the second arrangement direction D2, and the sensing electrode band 33B has the first arrangement direction D1 and the second arrangement direction. It has a lattice shape orthogonal to each of D2. Even in such a configuration, each of the first drive lines 41 overlaps the first sensing lines 51 different from each other, and each of the second drive lines 42 differs from the second sensing lines 52 different from each other. As long as it overlaps with the above, the effect according to the above (1) can be obtained.

  The dummy pattern 43 may have the same line width as the first drive line 41 and the second drive line 42, or the same line width as the first sensing line 51 and the second sensing line 52. You may have. The dummy pattern 43 may not be located on the drive surface 31S, and may be located on the sensing surface 33S in the gap overlapping portion 21G. In this case, for example, a dummy pattern having the same line width as the first sensing line 51 and the second sensing line 52 is preferably formed.

The touch sensor electrode 21 is not limited to the configuration having the dummy pattern 43, and may have a configuration in which the dummy pattern 43 is omitted.
Each of the first sensing line 51 and the second sensing line 52 constituting the sensing electrode 33SP has a linear shape, and the first drive line 41 and the second drive line 42 constituting the drive electrode 31DP. Each has a linear shape. Not limited to this, each of the first sensing line 51 and the second sensing line 52 has a polygonal line shape or a curved shape, and each of the first drive line 41 and the second drive line 42 has a polygonal line shape, or It may have a curved shape. According to such a configuration, the shape of the unit cell includes not only one rectangular shape but also a plurality of mutually different rectangular shapes or a polygonal shape that is equal to or more than a rectangle. Therefore, moire is less likely to occur between the touch sensor electrode 21 and the black matrix.

  The ratio between the drive pad width WPD and the first drive interval GD1 can be appropriately changed within a range in which a plurality of unit cells are included in one cell 21C. When the ratio between the drive pad width WPD and the first drive interval GD1 is changed, the ratio between the second drive interval GD2 and the drive pad width WPD, the first sensing interval GS1, and the second sensing interval GS2 are each changed. And the ratio of the sensing pad width WPS may be changed.

[Second Embodiment]
With reference to FIG. 9, a second embodiment in which a touch sensor electrode, a touch panel, and a display device are embodied will be described. The second embodiment is different from the first embodiment in the structure of the electrode lines constituting the drive electrode 31DP. Therefore, hereinafter, differences from the first embodiment will be described in detail. And about the structure equivalent to 1st Embodiment in FIG. 9, detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol as 1st Embodiment.

[Drive electrode]
The configuration of the drive electrode will be described with reference to FIG. FIG. 9 is a plan view showing a planar structure of the drive electrode 31DP. In FIG. 9, as in FIG. 4, the line width of the electrode lines is exaggerated for convenience of explaining the arrangement of the electrode lines constituting the drive electrode band 31B. Is shown.

  As shown in FIG. 9, one drive electrode 31DP includes one pad 31P and one drive electrode band 31B. Similar to the drive electrode band 31B of the first embodiment, the drive electrode band 31B includes a plurality of second drive lines 42 having a linear shape extending along the second extending direction E2, and mutually in the second arrangement direction D2. Two adjacent second drive lines 42 are arranged with a second drive interval GD2 along the first extending direction E1.

  Similarly to the drive electrode band 31B of the first embodiment, the drive electrode band 31B includes a plurality of first drive lines 41 having a linear shape extending along the first extending direction E1. However, the two first drive lines 41 adjacent to each other in the second arrangement direction D2 have a third drive interval GD3 that is approximately twice the distance of the first drive interval GD1 along the second extending direction E2. Are lined up.

  That is, between the two first drive lines 41 adjacent to each other in the second arrangement direction D2 and at a position separated from each first drive line 41 by the first drive interval GD1, the first drive line 41 is provided. The drive line thinning-out portion 61 in which is not formed extends along the first extending direction E1. Thus, in the drive pattern, the first drive lines 41 and the drive line thinning portions 61 where the first drive lines 41 are not located are alternately positioned in the second arrangement direction D2.

  A partial drive line 62 is located in a part of the drive line thinning portion 61. The partial drive line 62 has a linear shape extending along the first extending direction E1 and straddles a gap between two adjacent sensing electrode line regions SS other than the gap overlapping portion 21G.

  The dummy pattern 43 is located in the gap overlapping portion 21G, and the portion of the dummy pattern 43 that extends along the first extending direction E1 includes the gap overlapping portion 21G, and the first extension than the gap overlapping portion 21G. In the present direction E1, it is located in both the portion close to the pad 31P and the far portion.

[Touch sensor electrodes]
The touch sensor electrode 21 of the present embodiment includes the plurality of drive electrodes 31DP described above and the plurality of sensing electrodes 33SP shown in FIG. Therefore, in the touch sensor electrode 21, the number of the first drive lines 41 included in one cell 21C is smaller than that of the touch sensor electrode 21 of the first embodiment. Therefore, in one cell 21C, the area of the electrode line of the drive electrode 31DP that forms the capacitance is reduced, and as a result, the initial value of the capacitance in one cell 21C is reduced.

  In addition, since the first drive lines 41 and the drive line thinning portions 61 are alternately positioned in the second arrangement direction D2, a portion where no capacitance is formed in one cell 21C is the second. Unbiasing in the arrangement direction D2 is suppressed. For this reason, in the surface of the touch sensor electrode 21, it is possible to suppress a portion where the portion detected by the user's finger or the like being detected and the portion not detected are biased.

As described above, according to the second embodiment, the following effects can be obtained.
(5) In the touch sensor electrode 21, the number of the first drive lines 41 included in one cell 21 </ b> C is smaller than that of the touch sensor electrode 21 that does not include the drive line thinning portion 61. Therefore, in one cell 21C, the area of the electrode line of the drive electrode 31DP that forms the capacitance is reduced, and as a result, the initial value of the capacitance in one cell 21C is reduced.

  (6) Since the first drive lines 41 and the drive line thinning portions 61 are alternately positioned in the second arrangement direction D2, a portion where no capacitance is formed in one cell 21C is The bias in the two arrangement directions D2 is suppressed. For this reason, in the surface of the touch sensor electrode 21, it is possible to suppress a portion where the portion detected by the user's finger or the like being detected and the portion not detected are biased.

Note that the second embodiment described above can be implemented with appropriate modifications as follows.
The drive electrode 31DP has a drive line thinning portion 61, and only the partial drive line 62 is located in the drive line thinning portion 61.

  Not limited to this, as shown in FIG. 10, the drive line thinning portion 61 has a straight line shape extending along the first extending direction E <b> 1 and a dummy wiring 63 that is not electrically connected to the pad 31 </ b> P. May be. In such a configuration, one dummy wiring 63 is positioned between two second drive lines 42 adjacent to each other in the first extending direction E1 and sandwiches the dummy wiring 63 in the first extending direction E1. It does not have to be connected to each of the two second drive lines 42. The drive pattern has a shape that connects the dummy wirings 63 in a plan view facing the sensing surface 33S.

  Even with such a configuration, the number of first drive lines 41 included in one cell 21C in the touch sensor electrode 21 is smaller than that in the touch sensor electrode 21 of the first embodiment. Therefore, in one cell 21C, the area of the electrode line of the drive electrode 31DP that forms the capacitance is reduced, and as a result, the initial value of the capacitance in one cell 21C is reduced.

  The drive line thinning portion 61 is positioned between two first drive lines 41 adjacent to each other in the second arrangement direction D2 and separated from each first drive line 41 by the first drive interval GD1. doing. Not limited to this, in the drive pattern, a portion where at least one first drive line 41 is located among the plurality of first drive lines 41 arranged with a first drive interval GD1 is substituted for the drive line thinning unit 61. Any configuration may be used.

  The drive line thinning-out portion 61 may not be located between the first drive lines 41 adjacent to each other along the second arrangement direction D2 in the drive pattern, and may be arranged along the first arrangement direction D1. Between the second drive lines 42 adjacent to each other.

  The drive line thinning-out part 61 is between the first drive lines 41 adjacent to each other in the second arrangement direction D2 and between the second drive lines 42 adjacent to each other in the first arrangement direction D1 in the drive pattern. And both. In this case, the drive line thinning portion 61 needs to be located in a portion that does not prevent the voltage from being applied across the entire second arrangement direction D2 of the drive electrode 31DP.

  The partial drive line 62 may be located in the drive line thinning portion 61 other than the gap between the two sensing electrode line regions SS, but in the portion overlapping the gap between the two sensing electrode line regions SS Preferably it is located.

The drive electrode band 31B may not have the partial drive line 62.
Each of the second embodiment and the modified example of the second embodiment can be implemented in combination with the configuration of the first embodiment and the modified example of the first embodiment.

[Third Embodiment]
With reference to FIG. 11 and FIG. 12, a third embodiment in which an electrode for a touch sensor, a touch panel, and a display device are embodied will be described. 3rd Embodiment differs in the structure of the electrode wire which comprises sensing electrode 33SP compared with 2nd Embodiment. Therefore, differences from the second embodiment will be described in detail below. And about the structure equivalent to 2nd Embodiment in each of FIG. 11 and FIG. 12, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol as 1st Embodiment.

[Sensing electrode]
The configuration of the sensing electrode will be described with reference to FIG. FIG. 11 is a plan view showing a planar structure of the sensing electrode 33SP. In FIG. 11, the line width of the electrode line is exaggerated for convenience of explaining the arrangement of the electrode lines constituting the sensing electrode band 33B, as in FIG. Is shown.

  As shown in FIG. 11, one sensing electrode 33SP includes one pad 33P and one sensing electrode band 33B. Similar to the sensing electrode strip 33B of the first embodiment, the sensing electrode strip 33B includes a plurality of first sensing lines 51 having a linear shape extending along the first extending direction E1, and mutually in the first arrangement direction D1. Two adjacent first sensing lines 51 are arranged at a first sensing interval GS1 along the second extending direction E2.

  The sensing electrode strip 33B includes a plurality of second sensing lines 52 having a linear shape extending along the second extending direction E2, similarly to the sensing electrode strip 33B of the first embodiment. However, the plurality of second sensing lines 52 includes a portion in which two second sensing lines 52 adjacent to each other in the first arrangement direction D1 are arranged with a second sensing interval GS2 along the first extending direction E1. And a portion lined up with a third sensing interval GS3 that is approximately twice the distance of the second sensing interval GS2.

  In the plurality of second sensing lines 52, four second sensing lines 52 arranged in the first arrangement direction D1 constitute one sensing line cycle. Of the second sensing lines 52 included in the sensing line period, the three second sensing lines 52 that are continuous in the first arrangement direction D1 are arranged at every second sensing interval GS2 in the second extending direction E2. The third second sensing line 52 and the fourth second sensing line 52 in the first arrangement direction D1 are arranged with a third sensing interval GS3 along the second extending direction E2.

  That is, the sensing line thinning portion 71 extending along the second extending direction E2 is located for each of the three second sensing lines 52 arranged in the first arrangement direction D1. Each sensing line thinning portion 71 is separated from each of the two second sensing lines 52 adjacent to each other in the first arrangement direction D1 by the second sensing interval GS2.

  Thus, in the sensing pattern, the sensing line thinning part 71 is regularly positioned inside the sensing pattern. Therefore, it is possible to suppress a portion where no capacitance is formed in one cell 21C from being biased in the first arrangement direction D1. For this reason, in the surface of the touch sensor electrode 21, it is possible to suppress a portion where the portion detected by the user's finger or the like being detected and the portion not detected are biased.

A partial sensing line 72 is located in a part of the sensing line thinning part 71. The partial sensing line 72 has a linear shape extending along the second extending direction E2, and straddles a gap between two adjacent drive electrode line regions SD other than the gap overlapping portion 21G. [Touch sensor electrodes]
The configuration of the touch sensor electrode will be described with reference to FIG. FIG. 12 is a plan view of the drive electrode 31DP and the sensing electrode 33SP as seen from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked, as in FIG. In FIG. 12, the line widths of the electrode lines are exaggerated for convenience of explaining the arrangement of the drive electrodes 31DP and the sensing electrodes 33SP.

  As shown in FIG. 12, in the touch sensor electrode 21, the second drive line 42 that overlaps the sensing line thinning portion 71 among the second drive lines 42 provided in each drive electrode 31 </ b> DP in a plan view facing the sensing surface 33 </ b> S. Does not overlap the second sensing line 52. Therefore, the second drive line 42 that overlaps the sensing line thinning portion 71 does not form a capacitance with the sensing electrode 33SP, and is exposed from the gap of the sensing electrode band 33B.

  On the other hand, in the touch sensor electrode 21, the first sensing line 51 that overlaps the drive line thinning-out portion 61 among the first sensing lines 51 included in each sensing electrode 33 </ b> SP in the plan view facing the sensing surface 33 </ b> S is the first sensing line 51. It does not overlap with the drive line 41. Therefore, the first sensing line 51 overlapping the drive line thinning portion 61 does not form a capacitance with the drive electrode 31DP.

  In each cell 21C of the touch sensor electrode 21, the number of electrode lines constituting the drive electrode 31DP is different from the number of electrode lines constituting the sensing electrode 33SP. Therefore, the initial value of the capacitance in each cell 21C is the initial value of the capacitance in each cell 21C of the touch sensor electrode 21 in the first embodiment, and the initial value of the touch sensor electrode 21 in the second embodiment. It becomes a value different from any of the initial capacitance values in each cell 21C.

As described above, according to the third embodiment, the following effects can be obtained.
(7) In each cell 21C, the number of electrode lines constituting the drive electrode 31DP is different from the number of electrode lines constituting the sensing electrode 33SP. Therefore, the initial value of the capacitance in each cell 21C is the initial value of the capacitance in each cell 21C that does not include the drive line thinning unit 61 and the sensing line thinning unit 71, and only the drive line thinning unit 61. It becomes a value different from any of the initial values of capacitance in each of the cells 21C to be included.

Note that the third embodiment described above can be implemented with appropriate modifications as follows.
The sensing electrode 33SP has a sensing line thinning part 71, and only the partial sensing line 72 is located in the sensing line thinning part 71.

  Not only this, but as shown in FIG. 13, the sensing line thinning portion 71 has a dummy wiring 73 that has a linear shape extending along the second extending direction E2 and is not electrically connected to the pad 33P. May be. In such a configuration, one dummy wiring 73 is located between two first sensing lines 51 adjacent to each other in the second extending direction E2, and sandwiches the dummy wiring 73 in the second extending direction E2. It does not have to be connected to each of the two first sensing lines 51. And the sensing pattern has the shape which connects between the dummy wiring 73 in planar view facing the sensing surface 33S.

  Even with such a configuration, in the touch sensor electrode 21, the number of electrode lines constituting the drive electrode 31DP and the number of electrode lines constituting the sensing electrode 33SP, that is, the electrode lines connected to the pad 33P in the sensing electrode 33SP. Are different from each other. Therefore, the initial value of the capacitance in each cell 21C is the initial value of the capacitance in each cell 21C of the touch sensor electrode 21 in the first embodiment, and the initial value of the touch sensor electrode 21 in the second embodiment. It becomes a value different from any of the initial capacitance values in each cell 21C.

  In the sensing pattern, it is only necessary that at least one second sensing line 52 of the plurality of second sensing lines 52 arranged with the second sensing interval GS2 is replaced with the sensing line thinning unit 71.

  The sensing line thinning portion 71 may not be located between the second sensing lines 52 adjacent to each other along the second arrangement direction D2 in the sensing pattern, and may be mutually arranged along the first arrangement direction D1. Between the first sensing lines 51 adjacent to each other. In this case, a configuration in which the sensing line thinning portion 71 is located in a portion that does not overlap the drive line thinning portion 61 in a plan view facing the sensing surface 33S is preferable.

  The sensing line thinning-out part 71 is between the first sensing lines 51 adjacent to each other in the second arrangement direction D2 and between the second sensing lines 52 adjacent to each other in the first arrangement direction D1 in the sensing pattern. And both. In this case, a configuration in which the sensing line thinning portion 71 is located at a portion that does not overlap the drive line thinning portion 61 in a plan view facing the sensing surface 33S is preferable. Moreover, the sensing line thinning part 71 needs to be located in the site | part which does not prevent a voltage being applied over the whole 1st arrangement direction D1 in the sensing electrode 33SP.

  The partial sensing line 72 may be located in the sensing line thinning portion 71 other than the gap between the two drive electrode line regions SD, but in the portion overlapping the gap between the two drive electrode line regions SD Preferably it is located.

The sensing electrode band 33B may not have the partial sensing wire 72.
The configuration of the sensing electrode 33SP in the third embodiment is not limited to the configuration of the drive electrode 31DP in the second embodiment, and can be implemented in combination with the configuration of the drive electrode 31DP in the first embodiment.

[Fourth Embodiment]
With reference to FIGS. 14 to 16, a fourth embodiment in which a touch sensor electrode, a touch panel, and a display device are embodied will be described. The fourth embodiment differs from the first embodiment in that no dummy pattern is located in the gap between the two drive electrodes 31DP. Therefore, hereinafter, differences from the first embodiment will be described in detail. And about the structure equivalent to 1st Embodiment in each of FIGS. 14-17, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol as 1st Embodiment.

[Drive electrode]
The configuration of the drive electrode will be described with reference to FIG. FIG. 14 is a plan view showing a planar structure of the drive electrode 31DP. In FIG. 14, the line width of the electrode lines is exaggerated for convenience of describing the arrangement of the electrode lines constituting the drive electrode band 31B, as in FIG. Is shown.

  As shown in FIG. 14, one drive electrode 31DP includes one pad 31P and one drive electrode band 31B. Similar to the drive electrode band 31B of the first embodiment, the drive electrode band 31B includes a plurality of first drive lines 41 having a linear shape extending along the first extending direction E1, and is mutually in the second arrangement direction D2. Two adjacent first drive lines 41 are aligned with a first drive interval GD1 along the second extending direction E2.

  On the other hand, the drive electrode band 31B includes a plurality of second drive lines 42 having a linear shape extending along the second extending direction E2 as in the case of the drive electrode 31DP of the first embodiment. The two second drive lines 42 adjacent to each other in D2 are arranged with a second drive interval GD2 along the first extending direction E1.

  However, in the drive electrode 31DP of the present embodiment, among the intersections of the first drive line 41 and the second drive line 42, the intersection that is the distance between the pad 31P and the intersection closest to the pad 31P in the second arrangement direction D2. The distance DN is larger than the drive electrode 31DP of the first embodiment. The intersection distance DN is formed by two first drive lines 41 adjacent to each other in the second arrangement direction D2 and two second drive lines 42 adjacent to each other in the second arrangement direction D2. It is smaller than ½ times the length of the diagonal in the unit cell.

  In contrast, in the drive electrode 31DP of the first embodiment, among the intersections of the first drive line 41 and the second drive line 42, the intersection closest to the pad 31P in the second arrangement direction D2 is the outer edge of the pad 31P. Is located.

  The drive pad width WPD in the pad 31P is equal to the drive pad width WPD in the pad 31P of the drive electrode 31DP of the first embodiment, and is approximately equal to 2.5 times the length of the diagonal line in the unit cell.

[Sensing electrode]
The configuration of the sensing electrode will be described with reference to FIG. FIG. 15 is a plan view showing a planar structure of the sensing electrode 33SP. In FIG. 15, as in FIG. 5, the line width of the electrode line is exaggerated for convenience of explaining the arrangement of the electrode lines constituting the sensing electrode band 33B. Is shown.

  As shown in FIG. 15, one sensing electrode 33SP includes one pad 33P and one sensing electrode band 33B. Similar to the sensing electrode strip 33B of the first embodiment, the sensing electrode strip 33B includes a plurality of first sensing lines 81 having a linear shape extending along the first extending direction E1, and mutually in the first arrangement direction D1. Two adjacent first sensing lines 81 are aligned with a first sensing interval GS1 along the second extending direction E2.

  On the other hand, the sensing electrode band 33B includes a plurality of second sensing lines 82 having a linear shape extending along the second extending direction E2 as in the sensing electrode band 33B of the first embodiment, and the first array The two second sensing lines 82 adjacent to each other in the direction D1 are arranged with a second sensing interval GS2 along the first extending direction E1.

  In the sensing electrode 33SP, of the intersections of the first sensing line 81 and the second sensing line 82, the intersection closest to the end where the pad 31P of the drive electrode 31DP is located in the second arrangement direction D2 and the second arrangement direction D2 The distance from the straight line passing through the end of the pad 33P is the intersection distance DN. The intersection distance DN in the sensing electrode 33SP of the present embodiment is larger than the intersection distance of the sensing electrode 33SP in the first embodiment. The intersection distance DN is formed by the two first sensing lines 81 adjacent to each other in the first arrangement direction D1 and the two second sensing lines 82 adjacent to each other in the first arrangement direction D1. It is smaller than ½ times the length of the diagonal in the unit cell. The intersection distance DN of the sensing electrodes 33SP is substantially equal to the intersection distance DN of the drive electrodes 31DP.

  In contrast, in the sensing electrode 33SP of the first embodiment, from the end where the pad 31P of the drive electrode 31DP is located in the second arrangement direction D2 among the intersections of the first sensing line 51 and the second sensing line 52. The closest intersection is in contact with a straight line passing through the end of the pad 33P in the second arrangement direction D2.

  The sensing pad width WPS in the pad 33P is smaller than the drive pad width WPD in the pad 31P of the drive electrode 31DP and is approximately equal to twice the length of the diagonal line in the unit cell. Therefore, the sensing electrode interval GSP between the two pads 33P adjacent to each other in the second arrangement direction D2 is located in a portion that does not overlap with the intersection of the first sensing line 81 and the second sensing line 82. The gap between the sensing electrode strips 33 </ b> B adjacent to each other is located at a portion other than the intersection of the extension line of the first sensing line 81 and the extension line of the second sensing line 82.

[Touch sensor electrodes]
The configuration of the touch sensor electrode will be described with reference to FIG. FIG. 16 is a plan view of the drive electrode 31DP and the sensing electrode 33SP as seen from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked, as in FIG. In FIG. 16, the line widths of the electrode lines are exaggerated for convenience of explaining the arrangement of the drive electrodes 31DP and the sensing electrodes 33SP.

  As shown in FIG. 16, a plurality of cells 21C are set in the touch sensor electrode 21, and in each drive electrode 31DP, the plurality of cells 21C are arranged along the second arrangement direction D2, and each sensing electrode 33SP is provided. , A plurality of cells 21C are arranged along the first arrangement direction D1. In each cell 21C, the entire first drive line 41 overlaps the entire first sensing line 81 opposed across the transparent dielectric substrate 33, and the entire second drive line 42 is transparent. It overlaps with the entire second sensing line 82 opposed across the dielectric substrate 33.

  On the other hand, at least one of the first sensing line 81 and the second sensing line 82 overlaps the gap between the two drive electrodes 31DP in a plan view facing the sensing surface 33S. In addition, in the gap between the two sensing electrodes 33SP, the first drive lines 41 and the second drive lines 42 alternately overlap along the first arrangement direction D1 in a plan view facing the sensing surface 33S. Yes.

  Thereby, in the plan view facing the sensing surface 33S, between the two sensing electrodes 33SP adjacent to each other in the second arrangement direction D2, the two first sensing wires 81 facing each other at the end are arranged. A first drive line 41 is located between them. Then, in the plan view facing the sensing surface 33S, between the two sensing electrodes 33SP adjacent to each other in the second arrangement direction D2, between the two second sensing lines 82 facing each other at the end. The second drive line 42 is located in the position.

  In the touch sensor electrode 21, a gap between two drive electrodes 31DP adjacent to each other in the first arrangement direction D1, and a gap between two sensing electrodes 33SP adjacent to each other in the second arrangement direction D2. The intersecting portion is the gap overlapping portion 21G. The gap overlapping portion 21G is located inside a region surrounded by the unit lattice.

  Therefore, a part of the sensing electrode 33SP is located in the gap between the two drive electrodes 31DP adjacent to each other in the first arrangement direction D1 in a plan view facing the transparent dielectric substrate 33. On the other hand, a part of the drive electrode 31DP is located in the gap between the two sensing electrodes 33SP adjacent to each other in the second arrangement direction D2. Therefore, the touch sensor electrode 21 does not require a dummy pattern like the touch sensor electrode 21 of the first embodiment. As a result, since it is not necessary to form a dummy pattern between two drive electrodes 31DP adjacent to each other in the first arrangement direction D1, the touch sensor electrode 21 can be easily formed.

As described above, according to the fourth embodiment, the following effects can be obtained.
(8) Since the touch sensor electrode 21 does not require a dummy pattern, it is not necessary to form a dummy pattern between the two drive electrodes 31DP adjacent to each other in the first arrangement direction D1. It becomes easy to form the working electrode 21.

Note that the above-described fourth embodiment can be implemented with appropriate modifications as follows.
The drive pad width WPD at the pad 31P of the drive electrode 31DP is approximately equal to twice the length of the diagonal line in the unit cell, and the sensing pad width WPS at the pad 33P of the sensing electrode 33SP is the length of the diagonal line in the unit cell May be approximately equal to 2.5 times. Even in such a configuration, the gap overlapping portion 21G is located inside the region surrounded by the unit lattice, and thus a dummy pattern is not necessary.

  The intersection distance DN in the drive electrode 31DP may be larger than ½ times the length of the diagonal line in the unit cell. Even in such a configuration, the drive pad width WPD is approximately equal to 2.5 times the diagonal length in the unit cell, and the sensing pad width WPS is approximately equal to twice the diagonal length in the unit cell. For example, the gap overlapping portion 21G is located inside the region surrounded by the unit lattice. In such a configuration, the intersection distance DN at the sensing electrode 33SP may be equal to the intersection distance DN at the drive electrode 31DP.

  The intersection distance DN in the drive electrode 31DP may be larger than ½ times the length of the diagonal line in the unit cell. Even in such a configuration, the drive pad width WPD is approximately equal to twice the diagonal length of the unit cell, and the sensing pad width WPS is approximately equal to 2.5 times the diagonal length of the unit cell. For example, the gap overlapping portion 21G is located inside the region surrounded by the unit lattice. In such a configuration, the intersection distance DN at the sensing electrode 33SP may be equal to the intersection distance DN at the drive electrode 31DP.

  The drive pad width WPD and the sensing pad width WPS are not limited to the widths described above, but may be any width as long as the gap overlapping portion 21G is located inside the unit cell. With such a configuration, a dummy pattern is unnecessary.

  -4th Embodiment can also be implemented combining the structure of 2nd Embodiment, and the structure of the modification of 2nd Embodiment. The fourth embodiment can also be implemented in combination with the configuration of the third embodiment and the configuration of the modification of the third embodiment.

[Fifth Embodiment]
With reference to FIGS. 17 to 19, a fifth embodiment in which a touch sensor electrode, a touch panel, and a display device are embodied will be described. The fifth embodiment is different from the first embodiment in the structure of the electrode lines constituting the drive electrode 31DP and the structure of the electrode lines constituting the sensing electrode 33SP. Therefore, hereinafter, differences from the first embodiment will be described in detail. And about the structure equivalent to 1st Embodiment in each of FIGS. 17-19, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol as 1st Embodiment.

[Drive electrode]
The configuration of the drive electrode will be described with reference to FIG. FIG. 17 is a plan view showing a planar structure of the drive electrode 31DP. In FIG. 17, the line width of the electrode lines is exaggerated for convenience of describing the arrangement of the electrode lines constituting the drive electrode band 31B, as in FIG. Is shown.

  As shown in FIG. 17, one drive electrode 31DP includes one pad 31P and one drive electrode band 31B having a lattice shape and connected to the pad 31P. The drive electrode band 31B includes a plurality of first drive lines 91 having a linear shape extending along a third extending direction E3 intersecting the first arrangement direction D1, and a fourth extension orthogonal to the third extending direction E3. And a plurality of second drive lines 92 having a linear shape extending along the direction E4.

  In the plurality of first drive lines 91 constituting one drive electrode band 31B, the third extending direction E3, which is the direction in which each first drive line 91 extends, is a facing angle that is a predetermined angle with respect to the first arrangement direction D1. θ2 is formed. The facing angle θ2 is, for example, 30 °. Among the plurality of first drive lines 91, in the second arrangement direction D2, one of the two end portions, one first drive line 91 closest to the pad 31P is directly connected to the pad 31P. ing.

  On the other hand, in the plurality of second drive lines 92 constituting one drive electrode band 31B, the fourth extending direction E4, which is the extending direction of each second drive line 92, is orthogonal to the third extending direction E3, In addition, an opposing angle θ3 is formed with the first arrangement direction D1. The facing angle θ3 is 60 °, for example. Among the plurality of second drive lines 92, in the second arrangement direction D2, three second drive lines 92, one of the two end portions being closest to the pad 31P, are directly connected to the pad 31P. ing.

  In one drive electrode band 31B, each first drive line 91 intersects with at least one second drive line 92, and each second drive line 92 intersects with at least one first drive line 91. doing. Thereby, the plurality of first drive lines 91 and the plurality of second drive lines 92 form a lattice shape including a plurality of unit lattices having a rectangular shape and a part of the unit lattices.

[Sensing electrode]
The configuration of the sensing electrode will be described with reference to FIG. FIG. 18 is a plan view showing a planar structure of the sensing electrode 33SP. In FIG. 18, the line width of the electrode lines is exaggerated for convenience of explaining the arrangement of the electrode lines constituting the sensing electrode band 33B, as in FIG. Is shown.

  As shown in FIG. 18, one sensing electrode 33SP includes one pad 33P and a sensing electrode band 33B having a lattice shape and connected to the pad 33P. The sensing electrode band 33B includes a plurality of first sensing lines 101 having a linear shape extending along a third extending direction E3 intersecting with the second arrangement direction D2, and a fourth extension orthogonal to the third extending direction E3. And a plurality of second sensing lines 102 having a linear shape extending along the direction E4.

  In the plurality of first sensing lines 101 constituting one sensing electrode band 33B, the third extending direction E3, which is the direction in which each first sensing line 101 extends, forms an opposing angle θ3 with the second arrangement direction D2. Yes. Among the plurality of first sensing lines 101, in the first arrangement direction D1, three first sensing lines 101, one of the two end portions being closest to the pad 33P, are directly connected to the pad 33P. ing.

  On the other hand, in the plurality of second sensing wires 102 constituting one sensing electrode strip 33B, the fourth extending direction E4, which is the direction in which each second sensing wire 102 extends, is orthogonal to the third extending direction E3, In addition, an opposing angle θ2 is formed with respect to the second arrangement direction D2. Among the plurality of second sensing lines 102, in the first arrangement direction D1, one second sensing line 102, one of the two ends of which is closest to the pad 33P, is directly connected to the pad 33P. ing.

  In one sensing electrode band 33B, each first sensing line 101 intersects with at least one second sensing line 102, and each second sensing line 102 intersects with at least one first sensing line 101. doing. Accordingly, the plurality of first sensing lines 101 and the plurality of second sensing lines 102 form a lattice shape including a plurality of unit lattices having a rectangular shape and a part of the unit lattices.

[Touch sensor electrodes]
The configuration of the touch sensor electrode will be described with reference to FIG. FIG. 19 is a plan view of the drive electrode 31DP and the sensing electrode 33SP viewed from the direction in which the drive electrode 31DP and the sensing electrode 33SP are stacked, as in FIG. In FIG. 19, the line widths of the electrode lines are exaggerated for convenience of explaining the arrangement of the drive electrodes 31DP and the sensing electrodes 33SP.

  As shown in FIG. 19, a plurality of cells 21 </ b> C are set in the touch sensor electrode 21, and each of the plurality of first drive lines 91 in each cell 21 </ b> C is in a plan view facing the sensing surface 33 </ b> S. The first sensing wires 101 are different from each other. On the other hand, the entirety of each of the plurality of second drive lines 92 overlaps with different second sensing lines 102 in plan view facing the sensing surface 33S.

  In contrast, in the gap between the two sensing electrodes 33SP adjacent to each other in the second arrangement direction D2, one of the first drive lines 91 included in the drive electrode 31DP is seen in a plan view facing the sensing surface 33S. And a part of the second drive line 92 are located. In a gap between the two drive electrodes 31DP adjacent to each other in the first arrangement direction D1, a part of the first sensing line 101 provided in the sensing electrode 33SP in a plan view facing the sensing surface 33S, and A part of the second sensing line 102 is located.

  As described above, in the touch sensor electrode 21 of the present embodiment as well, in the same manner as the touch sensor electrode 21 of the first embodiment, in each cell 21C, each of the plurality of first drive lines 91 is entirely the sensing surface. In a plan view facing 33S, the first sensing lines 101 are different from each other. On the other hand, the entirety of each of the plurality of second drive lines 92 overlaps with different second sensing lines 102 in plan view facing the sensing surface 33S. Therefore, the effect according to the first embodiment can also be obtained by the touch sensor electrode 21 of the present embodiment.

The fifth embodiment described above can also be implemented with appropriate modifications as follows.
The facing angle θ3 may be an angle smaller than 90 ° other than 45 °, and the facing angle θ3 may be (90−α) ° when the facing angle θ3 is α °.

  A dummy pattern may be positioned in the gap overlapping portion 21G when the gap overlapping portion 21G is not at the inside of the unit lattice but at a position overlapping the unit lattice. The dummy pattern may be located on the surface of the transparent dielectric substrate 33 where the drive electrode 31DP is located, or may be located on the surface where the sensing electrode 33SP is located.

  -5th Embodiment is the structure of 2nd Embodiment, the structure of the modification of 2nd Embodiment, the structure of 3rd Embodiment, the structure of the modification of 3rd Embodiment, 4th Embodiment, and 4th. It can also be implemented in combination with the configuration of the modification of the embodiment.

Moreover, each said embodiment can also be suitably changed and implemented as follows.
As shown in FIG. 20, the touch sensor electrode 21 constituting the touch panel 20 may have a transparent substrate 31 on which the drive electrode 31DP is located separately from the transparent dielectric substrate 33. In such a configuration, one of the surfaces of the transparent substrate 31 facing the transparent dielectric substrate 33 is set as the drive surface 31S, and the drive electrode 31DP may be positioned on the drive surface 31S. The transparent adhesive layer 23 that bonds the transparent substrate 31 and the transparent dielectric substrate 33 may be positioned between the transparent substrate 31 and the transparent dielectric substrate 33. The transparent substrate 31 is an example of a first base material, and the transparent dielectric substrate 33 is an example of a second base material. In the transparent substrate 31, the drive surface 31S is the front surface, and the surface facing the drive surface 31S is the back surface. On the other hand, in the transparent dielectric substrate 33, the sensing surface 33S is the front surface, and the surface facing the sensing surface 33S is the back surface.

  As shown in FIG. 21, in the touch panel 20, the drive electrode 31 DP, the transparent substrate 31, the transparent adhesive layer 32, the transparent dielectric substrate 33, the sensing electrode 33 SP, and the transparent adhesive layer 23 are sequentially arranged from the components close to the display panel 10. The cover layer 22 may be located. The transparent substrate 31 is an example of a first base material, and the transparent dielectric substrate 33 is an example of a second base material. In the transparent substrate 31, the drive surface 31S is the front surface, and the surface facing the drive surface 31S is the back surface. On the other hand, in the transparent dielectric substrate 33, the sensing surface 33S is the front surface, and the surface facing the sensing surface 33S is the back surface.

  In such a configuration, for example, the pad 31P and the electrode line that constitute the drive electrode 31DP are formed on the drive surface 31S that is one surface of the transparent substrate 31, and the pad 33P and the electrode line that constitute the sensing electrode 33SP are transparent dielectric. It is formed on a sensing surface 33S, which is one surface of the body substrate 33. Then, the surface of the transparent substrate 31 facing the drive surface 31S and the surface of the transparent dielectric substrate 33 corresponding to the sensing surface 33S are bonded by the transparent adhesive layer 32.

  In manufacturing the touch panel 20, a method in which the touch sensor electrode 21 and the cover layer 22 are bonded together by the transparent adhesive layer 23 may be employed. As another example different from such a manufacturing method, A manufacturing method may be adopted. That is, a thin film layer made of a conductive metal such as copper is formed directly or via a base layer on the cover layer 22 such as a resin film, and a resist having a sensing electrode pattern shape on the thin film layer Form a layer. Next, the first film is obtained by processing the thin film layer into the sensing electrode 33SP by a wet etching method using ferric chloride or the like. Similarly to the sensing electrode 33SP, a thin film layer formed on another resin film is processed into the drive electrode 31DP to obtain a second film. And a 1st film and a 2nd film are affixed with a transparent adhesive layer with respect to the transparent dielectric substrate 33 so that the transparent dielectric substrate 33 may be pinched | interposed.

  The touch panel 20 and the display panel 10 may not be formed separately, and the touch panel 20 may be formed integrally with the display panel 10. In such a configuration, for example, among the touch sensor electrodes 21, a plurality of drive electrodes 31DP are located on the TFT layer 13, while a plurality of sensing electrodes 33SP are located between the color filter layer 15 and the upper polarizing plate 17. It can be configured as a mold. Alternatively, an on-cell configuration in which the touch sensor electrode 21 is located between the color filter layer 15 and the upper polarizing plate 17 may be employed.

  DESCRIPTION OF SYMBOLS 10 ... Display panel, 10S ... Display surface, 11 ... Lower polarizing plate, 12 ... Thin-film transistor substrate, 13 ... TFT layer, 14 ... Liquid crystal layer, 15 ... Color filter layer, 16 ... Color filter substrate, 17 ... Upper polarizing plate, DESCRIPTION OF SYMBOLS 20 ... Touch panel, 20S ... Operation surface, 21 ... Touch sensor electrode, 21C ... Cell, 21G ... Gap overlapping part, 22 ... Cover layer, 23, 32 ... Transparent adhesive layer, 31 ... Transparent substrate, 31B ... Drive electrode belt, 31DP, 31DP1, 31DPn: drive electrode, 31P ... pad, 31S ... drive surface, 33 ... transparent dielectric substrate, 33B ... sensing electrode band, 33DP ... drive electrode, 33P ... pad, 33S ... sensing surface, 33SP, 33SP1, 33SPn ... Sensing electrode 34 ... Selection circuit 35 ... Detection circuit 35a ... Signal acquisition unit 35b ... Signal processing , 36 ... control unit, 41, 91 ... first drive line, 42, 92 ... second drive line, 43 ... dummy pattern, 51, 81, 101 ... first sensing line, 52, 82, 102 ... second sensing line , 61 ... drive line thinning part, 62 ... partial drive line, 63, 73 ... dummy wiring, 71 ... sensing line thinning part, 72 ... partial sensing line.

Claims (14)

A dielectric substrate having a first surface and a second surface facing the first surface and transmitting light;
A plurality of first band-shaped electrodes formed on the first surface, arranged in a second arrangement direction at intervals along the first arrangement direction, which is one direction, and orthogonal to the first arrangement direction A plurality of first strip electrodes extending along;
A plurality of second band-shaped electrodes formed on the second surface of the dielectric substrate, the electrodes being arranged at intervals along the second arrangement direction and extending along the first arrangement direction; The second strip electrode,
Each of the plurality of first strip-shaped electrodes has a first pattern having a lattice shape including a plurality of first main lines and a plurality of first sub-lines extending along a direction intersecting the first main lines. And
Each of the plurality of second strip electrodes has a second pattern having a lattice shape including a plurality of second main lines and a plurality of second sub-lines extending along a direction intersecting the second main lines. And
In a plan view facing the second surface, a portion where the first main line and the second main line overlap each other is continuous along the extending direction of the second main line, and the first sub-line and the second main line A portion overlapping with the second subline continues along the extending direction of the second subline,
In the second strip electrodes adjacent to each other,
The second main line of the other second band electrode is located on an extension of the second main line of the second band electrode; and
The second sub-line of the other second strip electrode is located on the extension of the second sub-line of one of the second strip electrodes,
In a plan view facing the second surface,
The first pattern has a shape connecting the one second main line and the other second main line and is connected to two first sub-lines adjacent to each other in the extending direction of the second main line. The first main line, the one second sub line, and the other second sub line are connected to each other in the extending direction of the second sub line. A first sub-line connected to the main line, the first sub-line and the partial first main line intersect each other ,
A dummy pattern is further provided on one of the first surface and the second surface,
The dummy pattern is located in an overlapping portion between a gap between the first strip electrodes adjacent to each other and a gap between the second strip electrodes adjacent to each other in a plan view facing the second surface, The dummy pattern is a touch sensor electrode that is shorter than the first strip electrode in the second array direction and shorter than the second strip electrode in the first array direction . In the first pattern,
The plurality of first main lines extend along a direction forming an angle smaller than 90 ° with the first arrangement direction, and the plurality of first sub-lines are more than 90 ° with the first arrangement direction. The electrode for a touch sensor according to claim 1, which extends along a direction in which a small angle is formed. The line width of the second main line is larger than the line width of the first main line, and the line width of the second sub line is larger than the line width of the first sub line. Touch sensor electrode. The line width of the first main line and the line width of the second main line are equal to each other, and the line width of the first sub line and the line width of the second sub line are equal to each other. Or the electrode for touch sensors of 2. The forming material of each of the first main line, the first sub line, the second main line, and the second sub line is a metal,
In the first main line and the first sub line, the surface exposed on the first surface has a metallic luster,
The touch sensor electrode according to claim 3, wherein a surface exposed on the second surface is black in the second main line and the second sub line. 6. The gap between the second strip electrodes adjacent to each other is located at an area other than the intersection of the extension line of the second main line and the extension line of the second sub-line. 6. The electrode for touch sensors as described. The plurality of second main lines are
Wiring electrically connected to the pad;
A plurality of dummy wirings arranged along the wiring and not electrically connected to the pad;
With
The second pattern is:
The electrode for a touch sensor according to any one of claims 1 to 6, having a shape that connects the dummy wirings in a plan view facing the second surface. The touch sensor electrode according to any one of claims 1 to 7, wherein the dielectric substrate includes a single substrate. A first substrate having a surface on which a plurality of the first strip electrodes are located;
A second substrate having a surface on which a plurality of the second strip electrodes are located,
The back surface of the second base material overlaps the surface of the first base material,
The touch sensor electrode according to any one of claims 1 to 7, wherein the dielectric substrate is the second base material. A first substrate having a surface on which a plurality of the first strip electrodes are located;
A second substrate having a surface on which a plurality of the second strip electrodes are located,
The back surface of the second base material overlaps the back surface of the first base material,
The touch sensor electrode according to claim 1, wherein the dielectric substrate includes the first base material and the second base material. A touch sensor electrode comprising: a plurality of first strip electrodes; a plurality of second strip electrodes; and a dielectric substrate that is sandwiched between the first strip electrodes and the second strip electrodes and transmits light.
A cover layer covering the touch sensor electrode;
A peripheral circuit for measuring a capacitance between the first strip electrode and the second strip electrode;
The touch sensor electrode according to any one of claims 1 to 10, wherein the touch sensor electrode is a touch sensor electrode. A touch sensor electrode comprising: a plurality of first strip electrodes; a plurality of second strip electrodes; and a dielectric substrate that is sandwiched between the first strip electrodes and the second strip electrodes and transmits light.
A cover layer covering the touch sensor electrode;
A peripheral circuit for measuring a capacitance between the first strip electrode and the second strip electrode;
The touch sensor electrode is the touch sensor electrode according to claim 3,
A touch panel in which a plurality of the second strip electrodes are located between the dielectric substrate and the cover layer. A touch sensor electrode comprising: a plurality of first strip electrodes; a plurality of second strip electrodes; and a dielectric substrate that is sandwiched between the first strip electrodes and the second strip electrodes and transmits light.
A cover layer covering the touch sensor electrode;
A peripheral circuit for measuring a capacitance between the first strip electrode and the second strip electrode;
The touch sensor electrode is the touch sensor electrode according to claim 1,
A plurality of the second strip electrodes are located between the dielectric substrate and the cover layer;
The line width of the first main line is larger than the line width of the second main line, and the line width of the first sub line is larger than the line width of the second sub line. A display panel for displaying information;
A drive circuit for driving the touch panel;
The touch panel that transmits the information displayed on the display panel, and
The touch panel is the touch panel according to any one of claims 11 to 13. A display device.

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