JP2018195020A - Conductive film, touch panel, and display device - Google Patents

Abstract

To provide a conductive film configured to prevent reduction in appearance quality, a touch panel, and a display device.SOLUTION: A plurality of electrode lines located on a first surface of a transparent dielectric layer includes multiple curved sensing electrode lines 53SR extended in a first electrode direction D1. The sensing electrode line 53SR includes bend sections 53Q and short sections 53E. The bend sections 53Q include separate bend sections 53Qa. In two sensing electrode lines 53SR adjacent to each other along a second electrode direction D2, a separate bend section 53Qa of one sensing electrode line 53SR and a separate bend section 53Qa of the other sensing electrode line 53SR face each other with a gap, and positions of imaginary intersections 53KP with respect to each of the separate bent sections 53Qa coincide with each other.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a conductive film including a plurality of electrode wires, a touch panel including the conductive film, and a display device including the touch panel.

  A display device using a touch panel as an input device includes a display panel that displays an image and the touch panel overlaid on the display panel. As a method for detecting the contact position of a finger or the like on a touch panel, a capacitance method that detects a finger touching the operation surface of the touch panel as a change in capacitance is widely used. In the capacitive touch panel, the conductive film included in the touch panel includes a plurality of first electrodes extending along a first direction, a plurality of second electrodes extending along a second direction orthogonal to the first direction, And a transparent dielectric layer sandwiched between the first electrode and the second electrode. A contact position of a finger or the like on the operation surface is detected based on a change in capacitance between each first electrode and each of the plurality of second electrodes being detected for each first electrode.

  In an example of such a conductive film, each of the plurality of first electrodes includes a plurality of first electrode lines extending along the first direction, and each of the plurality of second electrodes extends along the second direction. It comprises a plurality of second electrode lines. As the electrode wire, a thin wire made of a metal such as silver or copper is used. By using a metal as the material of the electrode wire, it is possible to obtain quick response and high resolution when detecting the contact position, and it is possible to increase the size of the touch panel and reduce manufacturing costs.

  By the way, in the configuration in which the electrode lines are formed from a metal that absorbs or reflects visible light, the plurality of first electrode lines and the plurality of second electrode lines are the electrode lines as viewed from the operation surface of the touch panel. Form a lattice-like pattern orthogonal to each other. On the other hand, even in a display panel on which a touch panel is stacked, a black matrix that partitions a plurality of pixels along a first direction and a second direction forms a lattice pattern.

  In the above configuration, the interval between the first electrode lines adjacent to each other is generally different from the interval between the pixels adjacent to each other in the second direction, and the interval between the second electrode lines adjacent to each other is also set. This is different from the interval in the first direction between adjacent pixels. Then, when viewed from the operation surface of the touch panel, the lattice-like periodic structure formed by the first electrode line and the second electrode line overlaps with the lattice-like periodic structure that partitions the pixels, thereby providing two periodic structures. Deviation of the case may induce moire. When the moiré is visually recognized, the quality of the image visually recognized by the display device is deteriorated.

  As one of the measures for suppressing such moire, it has been proposed to reduce the periodicity of the periodic structure of the electrode wire. If the periodicity of a pattern composed of a plurality of electrode lines is low, this electrode line pattern is difficult to be recognized as a periodic structure. Therefore, the deviation between the pattern defining the pixel and the electrode line pattern is a deviation between the two periodic structures. It becomes difficult to be recognized as. Therefore, it is possible to suppress the moire from being visually recognized.

  For example, in the touch panel described in Patent Document 1, each of the first electrode line and the second electrode line has a polygonal line shape in which peaks and valleys are alternately repeated, and is configured from these electrode lines. The pattern to be formed has a polygonal repeating structure different from the rectangle. Therefore, the periodicity of such an electrode line pattern is lower than the periodicity of a grid-like electrode line pattern in which rectangles are arranged.

International Publication No. 2014/115831

By the way, in the touch panel described in Patent Document 1, each of the plurality of electrode lines arranged in one plane has a shape in which one electrode line having a polygonal line shape is translated along the direction in which the electrode lines are arranged. Have. For example, as shown in FIG. 19, the first electrode line 101 has a polygonal line shape extending in the first direction Da while being repeatedly bent. Specifically, the first electrode line 101 has a shape in which two types of short line portions 110 extending linearly in different directions are alternately arranged along the first direction Da. Each of the plurality of first electrode lines 101 arranged along the second direction Db has a shape in which one first electrode line 101 is translated along the second direction Db. In such a configuration, a plurality of short line portions 110 extending in the same direction are formed in a belt-like region 110R in which the positions in the first direction Da are aligned and aligned in the second direction Db. Then, two types of belt-like regions 110R in which the extending direction of the short line portion 110 is different from each other are alternately arranged along the first direction Da without a gap. As a result, the arrangement of the plurality of belt-like regions 110R is easily visually recognized as a belt-like pattern. This strip-shaped pattern is particularly easily recognized by reflection of external light when the display device is not displaying an image when the image is not lit. When such a strip-shaped pattern is viewed, the quality of the appearance viewed from the operation surface is lowered. .
An object of this invention is to provide the electroconductive film, touch panel, and display apparatus which can suppress the fall of the quality of an external appearance.

  In the above configuration, the transparent dielectric layer having a first surface and a second surface opposite to the first surface, and extending along the first direction on the first surface, A plurality of first electrodes arranged along a first intersecting direction intersecting the first direction and the second surface extend along a second direction intersecting the first direction and intersect the second direction. A plurality of second electrodes arranged along a second intersecting direction, wherein the first electrode includes a plurality of first electrode lines having a bent line shape extending in the first direction, and the first electrode lines Includes a plurality of bent portions and a plurality of short line portions having a linear shape connecting the bent portions adjacent to each other along the first electrode line, and the inclination of the short line portion with respect to the first direction is The plurality of bends change irregularly with respect to the order in which the short line portions are arranged in a plurality of short line portions. Includes a separation bend, and an intersection of the extension lines of the two short line portions connected to both ends of the separation bend is a virtual intersection, and the two adjacent to each other along the first intersecting direction In the first electrode line, the separated bent portion of one of the first electrode lines and the separated bent portion of the other first electrode line face each other with a gap, and each of the separated bent portions The positions of the virtual intersections with respect to the same.

  According to the above configuration, a portion extending in the same direction among the plurality of first electrode lines is formed with a band-like region aligned along the first intersecting direction, and further, from the above portions extending in different directions. It is possible to suppress two types of configured belt-shaped regions from being alternately arranged along the first direction without a gap. Therefore, it is possible to suppress the band-like pattern resulting from the arrangement of the band-like regions from being visually recognized by reflected light or the like. Therefore, it is possible to prevent the quality of the appearance viewed from the operation surface of the touch panel using the conductive film from being lowered.

  In addition, since the slopes of the plurality of short line portions change irregularly, the periodicity that causes moire can be suppressed to be low in the pattern including the plurality of first electrode lines. Therefore, it is possible to appropriately suppress the moire from being visually recognized by a pattern in which the electrode line pattern and the pixel pattern are superimposed.

  In the above configuration, the plurality of bent portions include connection bent portions, adjacent to each other along the first intersecting direction, and in the two first electrode lines included in the common first electrode The connecting bent portion of one of the first electrode lines may be connected to the connecting bent portion of the other first electrode line.

  According to the above configuration, since the two first electrode lines adjacent to each other are connected at the connection bent portion, even if the first electrode line is disconnected, the portion insulated from the surroundings is Occurrence in the first electrode line is suppressed. By using such a conductive film, a decrease in detection accuracy of the contact position on the touch panel can be suppressed.

  In the above-described configuration, the spaced-apart bent portion includes an arc-shaped bent portion having an arc shape, and the short line portion connected to the arc-shaped bent portion extends from the end of the arc formed by the arc-shaped bent portion at the end. You may extend so that the tangent of an arc-shaped bending part may follow.

  According to the above configuration, the extending direction of the electrode line is gradually changed in the separated bent portion as compared with the configuration in which the separated bent portion has a polygonal line shape. Therefore, the line width of the electrode line is uniformly formed according to the design dimension. Cheap. Therefore, it is suppressed that a bending part becomes easy to visually recognize resulting from line width expanding in a bending part.

  In the above configuration, the separated bent portion includes a bent line bent portion, and the bent line bent portion connects a plurality of points located between end portions of the two short line portions sandwiching the bent line bent portion. You may extend toward one side of the said edge part from the other.

  According to the above configuration, the extending direction of the electrode line changes gently at the bent portion as compared to the bent portion that is dotted and the bent portion that passes through one point between the end portions. The line width of the line is easily formed uniformly according to the design dimension. Therefore, it is suppressed that a bending part becomes easy to visually recognize resulting from line width expanding in a bending part.

In the above configuration, a virtual electrode line having a plurality of virtual bent portions and having a bent line shape that repeats bending in the first direction at a predetermined period is a first reference electrode line, and the first reference electrode line The position in the first direction in the cycle is a phase, and the plurality of first reference electrode lines are two adjacent first reference electrode lines along the first intersecting direction. The phase of the portion aligned in the first intersecting direction is inverted, and the virtual bent portion of one of the first reference electrode lines is connected to the virtual bent portion of the other first reference electrode line. The first electrode lines may be arranged such that the virtual intersection with respect to the first electrode line is disposed at a position displaced with respect to the virtual bent portion of the first reference electrode line.
According to the above configuration, the bent line shape of the first electrode line is accurately realized.

  In the above configuration, a length along the first direction between the virtual bent portions adjacent on one side of the first crossing direction in the first reference electrode line is a reference period, and a plurality of the first reference electrodes The arrangement interval of the lines is a reference interval, and a rectangular region centered on the virtual bent portion is a displacement region, and the length of the displacement region along the first direction is 0. 0 of the reference period. The length of the displacement region along the first intersecting direction is not less than 0.05 times and not more than 0.45 times, and is not less than 0.05 times and not more than 0.45 times the reference interval. The first electrode lines may be configured so that each is located in each of the different displacement regions.

  According to the said structure, when the length of a displacement area | region is more than the said lower limit, the shape based on the shape in which the periodicity of the reference | standard electrode line collapsed sufficiently is obtained as a shape of a 1st electrode line. On the other hand, since the length of the displacement region is less than or equal to the above upper limit value, the first electrode line can be prevented from having an excessively irregular bent line shape, and therefore the density of electrode line arrangement in the electrode line pattern is excessive. It is possible to suppress non-uniformity.

  In the above configuration, the second electrode includes a plurality of second electrode lines having a bent line shape extending in the second direction, and the second electrode line extends along the plurality of bent portions and the second electrode line. A plurality of short line portions having a linear shape connecting the bent portions adjacent to each other, and an inclination of the short line portion with respect to the second direction is irregular with respect to an order in which the short line portions are arranged in the plurality of short line portions. The plurality of bent portions of the second electrode line include a separated bent portion, and an intersection of each extension line of the two short line portions connected to both ends of the separated bent portion is a virtual intersection. In the two second electrode lines adjacent to each other along the second intersecting direction, the separated bent portion of one of the second electrode lines and the separated bent portion of the other second electrode line are: Facing each other with a gap, and The virtual electrode line having a bent line shape that coincides with the position of the virtual intersection and has a plurality of virtual bent portions and repeats bending at a predetermined period in the second direction is the second reference electrode line, The position of the second reference electrode line in the second direction within the period is a phase, and the plurality of second reference electrode lines are adjacent to each other along the second intersecting direction. The phase of the portion of the two reference electrode lines arranged in the second crossing direction is reversed, and the virtual bent portion of one of the second reference electrode lines and the virtual bent portion of the other second reference electrode line And the second electrode line is arranged such that the virtual intersection with respect to the second electrode line is disposed at a position displaced with respect to the virtual bent portion of the second reference electrode line. The arrangement interval of the plurality of first reference electrode lines is One reference interval, and a length along the first direction between virtual bent portions adjacent on one side of the first crossing direction in the first reference electrode line is a first reference period, and a plurality of the first reference intervals. An arrangement interval of two reference electrode lines is a second reference interval, and a length along the second direction between virtual bent portions adjacent on one side of the second crossing direction in the second reference electrode line is a second. It is a reference period, the first reference period may be twice as long as the second reference interval, and the second reference period may be twice as long as the first reference interval.

  According to the above configuration, the position of the bent portion of the first reference electrode line relative to the bent portion of the second reference electrode line is within the pattern in which the plurality of first reference electrode lines and the plurality of second reference electrode lines are overlapped. It becomes constant. Therefore, the electrode lines can be arranged so that the uniformity of the arrangement density of the electrode lines in the pattern of the reference electrode lines is high. Since the electrode line pattern in which the plurality of first electrode lines and the plurality of second electrode lines are overlapped is a pattern based on the pattern of the reference electrode lines, the arrangement density of the electrode lines also in the electrode line pattern Is suppressed from becoming excessively non-uniform. As a result, it is possible to suppress the graininess caused by the difference in density of the electrode wires from being visually recognized.

A touch panel that solves the above problem includes the conductive film, a cover layer that covers the conductive film, and a peripheral circuit that measures a capacitance between the first electrode and the second electrode.
According to the said structure, the touchscreen by which the quality of the external appearance seen from the operation surface was suppressed low is implement | achieved.

  A display device that solves the above problems includes a display panel that includes a plurality of pixels arranged in a grid and displays information, a touch panel that transmits the information displayed on the display panel, and controls driving of the touch panel. And the control panel is the touch panel.

  According to the above configuration, a display device in which the quality of the appearance viewed from the operation surface of the touch panel is prevented from being lowered is realized. In particular, when the display device is not lit, a band-like pattern is visually recognized by reflection of external light. It can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the fall of the quality of an external appearance can be suppressed in a touch panel.

Sectional drawing which shows the cross-section of a display apparatus about one Embodiment of a display apparatus. The top view which shows the planar structure of the electroconductive film in one Embodiment. The top view which shows the pixel arrangement | sequence of the display panel in one Embodiment. The schematic diagram for demonstrating the electric constitution of the touchscreen in one Embodiment. The figure which shows the structure of the sensing electrode wire in one Embodiment. The figure which shows the structure of the separation bending part in one Embodiment. (A) is a figure which shows the reference | standard pattern in one Embodiment, (b) is a figure which shows the structure of the sensing reference electrode line in one Embodiment. It is a figure which shows the creation process of the sensing electrode line in one Embodiment, Comprising: The figure which shows the sensing displacement electrode line set with respect to the sensing reference electrode line. It is a figure which shows the preparation process of the sensing electrode wire in one Embodiment, Comprising: The figure which shows a sensing displacement electrode wire with a sensing reference electrode wire. It is a figure which shows the creation process of the sensing electrode wire in one Embodiment, Comprising: The figure which shows a sensing electrode wire with a sensing reference electrode wire. The figure which shows the relationship of the separation bending part which opposes in one Embodiment. The figure which shows the structure of the drive electrode line in one Embodiment. (A) is a figure which shows the drive electrode line in one Embodiment with a drive reference electrode line, (b) is a figure which shows the structure of the drive reference electrode line in one Embodiment. The figure which shows the pattern comprised from the sensing reference electrode line and drive reference electrode line in one Embodiment. The figure which shows an example of the electrode line pattern comprised from the sensing electrode line and drive electrode line in one Embodiment. The figure which shows the structure of the space | interval bending part of a modification. Sectional drawing which shows the cross-section of the display apparatus in a modification. Sectional drawing which shows the cross-section of the display apparatus in a modification. The figure which shows the structure of the conventional electrode wire.

  With reference to FIGS. 1-15, one Embodiment of an electroconductive film, a touchscreen, and a display apparatus is described. In addition, each figure is the figure which showed these structures typically, in order to demonstrate the electroconductive film, touch panel, and display apparatus of one Embodiment, and each part which the structure shown by each figure has The size ratio may be different from the actual ratio.

[Configuration of display device]
The configuration of the display device will be described with reference to FIG.
As shown in FIG. 1, the display device 100 includes, for example, 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 (not shown), and further drives the touch panel 20. And a control unit that controls driving of the touch panel 20. Note that the transparent adhesive layer may be omitted as long as the relative position between the display panel 10 and the touch panel 20 is fixed by another configuration such as a housing.
A substantially rectangular display surface is partitioned on the surface of the display panel 10, and information such as an image based on image data is displayed on the display surface.

  The 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 referred to as 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 positioned in order from the touch panel 20. Yes.

  Among these, in the TFT layer 13, pixel electrodes constituting subpixels are located in a matrix. Further, the black matrix included in the color filter layer 15 has a lattice shape composed of a plurality of unit lattices having a rectangular shape. The black matrix defines a plurality of regions having a rectangular shape as regions facing each of the sub-pixels by such a lattice shape, and white light is red, green, and blue in each region defined by the black matrix. A colored layer for changing to any one of the colors is located.

  The display panel 10 is an EL panel that outputs colored light, and includes a red pixel that outputs red light, a green pixel that outputs green light, and a blue pixel that outputs blue light. If present, the above-described color filter layer 15 may be omitted. At this time, the boundary portion between adjacent pixels in the EL panel functions as a black matrix. Further, the display panel 10 may be a plasma panel that emits light by discharge. In this case, a boundary portion that partitions the red phosphor layer, the green phosphor layer, and the blue phosphor layer is a black matrix. Function.

  The touch panel 20 is a capacitive touch panel, and is a laminated body in which a conductive film 21 and a cover layer 22 are bonded together by a transparent adhesive layer 23, and transmits light that transmits information displayed on the display panel 10. have.

  Specifically, the transparent substrate 31, the plurality of drive electrodes 31 DP, the transparent adhesive layer 32, the transparent dielectric substrate 33, and the plurality of sensing electrodes are sequentially arranged from the components that make up the touch panel 20, closer to the display panel 10. 33SP, the transparent adhesive layer 23, and the cover layer 22 are located. Among these, the transparent substrate 31, the drive electrode 31DP, the transparent adhesive layer 32, the transparent dielectric substrate 33, and the sensing electrode 33SP constitute the conductive film 21.

  The transparent substrate 31 has light transmittance and insulating properties that transmit information such as an image displayed on the display surface of the display panel 10 and is superimposed on the entire display surface. The transparent substrate 31 is composed of a base material such as a transparent glass substrate, a transparent resin film, or a silicon substrate, for example. Examples of the resin used for the transparent substrate 31 include PET (Polyethylene Terephthalate), PMMA (Polymethyl methacrylate), PP (Polypropylene), PS (Polystyrene), and the like. The transparent substrate 31 may be a single-layer structure composed of one base material, or a multilayer structure in which two or more base materials are stacked.

  A surface of the transparent substrate 31 opposite to the display panel 10 is set as a drive electrode surface 31S, and a plurality of drive electrodes 31DP are arranged on the drive electrode surface 31S. A plurality of drive electrodes 31DP and a portion of the drive electrode surface 31S where the drive electrode 31DP is not located are bonded to the transparent dielectric substrate 33 by one transparent adhesive layer 32.

  The transparent adhesive layer 32 has a light transmission property that transmits information such as an image displayed on the display surface. For the transparent adhesive layer 32, for example, a polyether adhesive or an acrylic adhesive is used.

  The transparent dielectric substrate 33 has optical transparency that transmits information such as an image displayed on the display surface, and a relative dielectric constant suitable for detecting capacitance between electrodes. The transparent dielectric substrate 33 is composed of a base material such as a transparent glass substrate, a transparent resin film, or a silicon substrate, for example. Examples of the resin used for the transparent dielectric substrate 33 include PET, PMMA, PP, PS, and the like. The transparent dielectric substrate 33 may be a single-layer structure composed of one base material, or a multilayer structure in which two or more base materials are stacked.

  As a result of the plurality of drive electrodes 31DP being bonded to the transparent dielectric substrate 33 by the transparent adhesive layer 32, the plurality of drive electrodes 31DP are arranged on the back surface of the transparent dielectric substrate 33, which is the surface facing the transparent substrate 31.

  The surface of the transparent dielectric substrate 33 opposite to the transparent adhesive layer 32 is set as a sensing electrode surface 33S, and a plurality of sensing electrodes 33SP are arranged on the sensing electrode surface 33S. That is, the transparent dielectric substrate 33 is sandwiched between the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP. The plurality of sensing electrodes 33SP and the portion where the sensing electrode 33SP is not located on the sensing electrode surface 33S are bonded to the cover layer 22 by one transparent adhesive layer 23.

  The transparent adhesive layer 23 has a light transmission property that transmits information such as an image displayed on the display surface. For the transparent adhesive layer 23, for example, a polyether adhesive or an acrylic adhesive is used. The adhesive used as the transparent adhesive layer 23 may be a wet laminate adhesive, a dry laminate adhesive, or a hot laminate adhesive.

  The cover layer 22 is formed from a glass substrate such as tempered glass or a resin film, and the surface of the cover layer 22 opposite to the transparent adhesive layer 23 is the surface of the touch panel 20 and functions as the operation surface 20S.

  In addition, the transparent contact bonding layer 23 may be omitted among the said components. In the configuration in which the transparent adhesive layer 23 is omitted, the surface facing the transparent dielectric substrate 33 among the surfaces of the cover layer 22 is set as the sensing electrode surface 33S, and one thin film formed on the sensing electrode surface 33S. A plurality of sensing electrodes 33SP may be formed by patterning.

  In manufacturing the touch panel 20, a method in which the conductive film 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 through an underlayer on the cover layer 22 such as a resin film, and the sensing electrode 33SP has a pattern shape on the thin film layer. A resist layer is formed. Next, the thin film layer is processed into a plurality of sensing electrodes 33SP by a wet etching method using ferric chloride or the like, and a first film is obtained. Similarly to the sensing electrode 33SP, a thin film layer formed on another resin film functioning as the transparent substrate 31 is processed into a plurality of drive electrodes 31DP to obtain a second film. Then, the first film and the second film are attached to the transparent dielectric substrate 33 by the transparent adhesive layers 23 and 32 so as to sandwich the transparent dielectric substrate 33.

[Plane structure of conductive film]
With reference to FIG. 2, the planar structure of the conductive film 21 will be described focusing on the positional relationship between the sensing electrode 33SP and the drive electrode 31DP. 2 is a view of the conductive film 21 as viewed from the direction facing the surface of the transparent dielectric substrate 33, and each of the belt-like regions extending along the horizontal direction surrounded by the two-dot chain line is one Each of the strip-shaped regions extending along the vertical direction surrounded by the two-dot chain line indicates a region where one drive electrode 31DP is disposed. The numbers of sensing electrodes 33SP and drive electrodes 31DP are shown in a simplified manner.

  Further, in order to facilitate understanding of the configuration of the sensing electrode 33SP and the drive electrode 31DP, only the sensing electrode 33SP positioned at the uppermost side in FIG. In FIG. 2, only the drive electrode 31DP located on the leftmost side indicates a drive electrode line constituting the drive electrode 31DP by a thin line.

  As shown in FIG. 2, in the sensing electrode surface 33S of the transparent dielectric substrate 33, each of the plurality of sensing electrodes 33SP has a band shape extending along the first electrode direction D1, which is one direction, and They are arranged along a second electrode direction D2 orthogonal to the first electrode direction D1. Each sensing electrode 33SP is insulated from another adjacent sensing electrode 33SP.

  Each sensing electrode 33SP is composed of a plurality of sensing electrode lines 53SR, and a sensing electrode line group which is a set of the plurality of sensing electrode lines 53SR is arranged on the sensing electrode surface 33S. The sensing electrode line 53SR is made of a metal film such as copper, silver, or aluminum. The sensing electrode line 53SR is formed by, for example, patterning a metal film formed on the sensing electrode surface 33S by etching. It is formed.

  Each of the plurality of sensing electrodes 33SP is individually connected to a detection circuit which is an example of a peripheral circuit of the touch panel 20 via the sensing pad 33P, and a current value is measured by the detection circuit. A plurality of sensing electrode lines 53SR connected to one sensing pad 33P and electrically connected to each other are sensing electrode lines 53SR constituting one sensing electrode 33SP. The plurality of sensing electrode lines 53SR constituting one sensing electrode 33SP cooperate to contribute to detection of a change in capacitance in a region where the sensing electrode 33SP is located.

  In the drive electrode surface 31S of the transparent substrate 31, each of the plurality of drive electrodes 31DP has a strip shape extending along the second electrode direction D2, and is arranged along the first electrode direction D1. Each drive electrode 31DP is insulated from another adjacent drive electrode 31DP.

  Each drive electrode 31DP is composed of a plurality of drive electrode lines 51DR, and a drive electrode line group that is a set of the plurality of drive electrode lines 51DR is arranged on the drive electrode surface 31S. The drive electrode line 51DR is made of a metal film such as copper, silver, or aluminum. The drive electrode line 51DR is formed by, for example, patterning a metal film formed on the drive electrode surface 31S by etching. It is formed.

  Each of the plurality of drive electrodes 31DP is individually connected to a selection circuit which is an example of a peripheral circuit of the touch panel 20 via the drive pad 31P, and is selected by the selection circuit by receiving a drive signal output from the selection circuit. A plurality of drive electrode lines 51DR connected to one drive pad 31P and electrically connected to each other are drive electrode lines 51DR constituting one drive electrode 31DP. The plurality of drive electrode lines 51DR constituting one drive electrode 31DP cooperate to contribute to detection of a change in capacitance in a region where the drive electrode 31DP is located.

  In plan view opposite to the surface of the transparent dielectric substrate 33, the portion where the sensing electrode 33SP and the drive electrode 31DP overlap each other is a capacitance detection unit ND having a quadrangular shape defined by the two-dot chain line in FIG. . One capacitance detection unit ND is a portion where one sensing electrode 33SP and one drive electrode 31DP intersect three-dimensionally, and detects a position touched by a user's finger or the like on the touch panel 20. The smallest unit possible.

The method for forming the sensing electrode line 53SR and the drive electrode line 51DR is not limited to the etching described above, and other methods such as a printing method may be used.
[Plane structure of display panel]
With reference to FIG. 3, the planar structure of the color filter layer 15 in the display panel 10, that is, the pixel arrangement of the display panel 10 will be described.

  As shown in FIG. 3, the black matrix 15a of the color filter layer 15 is a lattice pattern composed of a plurality of unit lattices having a rectangular shape arranged along the first electrode direction D1 and the second electrode direction D2. have. One pixel 15P is composed of three unit lattices that are continuous along the first electrode direction D1, and the plurality of pixels 15P are latticed along each of the first electrode direction D1 and the second electrode direction D2. Are lined up.

  Each of the plurality of pixels 15P includes a red coloring layer 15R for displaying red, a green coloring layer 15G for displaying green, and a blue coloring layer 15B for displaying blue. In the color filter layer 15, for example, the red colored layer 15R, the green colored layer 15G, and the blue colored layer 15B are repeatedly arranged in this order along the first electrode direction D1. The plurality of red colored layers 15R are continuously arranged along the second electrode direction D2, and the plurality of green colored layers 15G are arranged continuously along the second electrode direction D2, and the plurality of blue colored layers 15B. Are continuously arranged along the second electrode direction D2.

  One red colored layer 15R, one green colored layer 15G, and one blue colored layer 15B constitute one pixel 15P, and the plurality of pixels 15P includes the red colored layer 15R, green in the first electrode direction D1. The colored layers 15G and the blue colored layer 15B are arranged along the first electrode direction D1 while maintaining the order of arrangement. In other words, the plurality of pixels 15P are arranged in a stripe shape extending along the second electrode direction D2.

  The width along the first electrode direction D1 in the pixel 15P is the first pixel width P1, and the width along the second electrode direction D2 in the pixel 15P is the second pixel width P2. Each of the first pixel width P1 and the second pixel width P2 is set to a value according to the size of the display panel 10, the resolution required for the display panel 10, and the like.

[Electrical configuration of touch panel]
With reference to FIG. 4, the electrical configuration of touch panel 20 will be described together with the function of the control unit included in display device 100. Hereinafter, as an example of the capacitive touch panel 20, an electrical configuration of the mutual capacitive touch panel 20 will be described.

  As illustrated in FIG. 4, the touch panel 20 includes a selection circuit 34 and a detection circuit 35 as peripheral circuits. The selection circuit 34 is connected to the plurality of drive electrodes 31DP, the detection circuit 35 is connected to the plurality of sensing electrodes 33SP, and the control unit 36 included in the display device 100 is connected to the selection circuit 34 and the detection circuit 35. Yes.

  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 31DP1 toward the nth drive electrode 31DPn.

  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 33SP1 toward the nth sensing electrode 33SPn.

  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 35b processes each current signal acquired by the signal acquisition unit 35a, generates 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 capacitance, thereby changing the capacitance between the drive electrode 31DP and the sensing electrode 33SP. Measure.

  Based on the voltage signal output from the signal processing unit 35b, the control unit 36 detects a position touched by the user's finger or the like on the touch panel 20, and displays information on the detected position on the display surface of the display panel 10. It is used for various processes such as generating information. The touch panel 20 is not limited to the above-described mutual capacitive touch panel 20, and may be a self capacitive touch panel.

[Configuration of sensing electrode]
The configuration of the sensing electrode 33SP will be described with reference to FIG.
As shown in FIG. 5, each of the plurality of sensing electrode lines 53SR has a bent line shape extending in the first electrode direction D1 while repeating the bending.
Specifically, the sensing electrode line 53SR includes a plurality of bent portions 53Q and a plurality of short line portions 53E having a linear shape connecting the bent portions 53Q adjacent to each other along the sensing electrode line 53SR. The bent portion 53Q is a portion connecting two short line portions 53E adjacent to each other, and a bent portion 53Q corresponding to a mountain portion in the drawing and a bent portion 53Q corresponding to a valley portion in the drawing are arranged along the sensing electrode line 53SR. They are lined up one by one.

  Each sensing electrode line 53SR extends as a whole along the first electrode direction D1, and the plurality of sensing electrode lines 53SR are arranged along the second electrode direction D2. Each of the plurality of sensing electrode lines 53SR constituting one sensing electrode 33SP is connected to a common sensing pad 33P at one end in the first electrode direction D1. A broken line N1 in FIG. 5 indicates a boundary between adjacent sensing electrodes 33SP. That is, the sensing electrode lines 53SR adjacent to each other across the broken line N1 constitute different sensing electrodes 33SP and are connected to different sensing pads 33P.

  Each of the plurality of short line portions 53E has a length L1 along the direction in which the short line portion 53E extends, and the plurality of short line portions 53E include short line portions 53E having different lengths L1. That is, in the plurality of short line portions 53E, the length L1 is not constant. Between the plurality of short line portions 53E arranged along the first electrode direction D1, the length L1 changes irregularly with respect to the arrangement order of the short line portions 53E.

  Each of the plurality of short line portions 53E has an inclination θ1 with respect to a base axis A1 that is a virtual straight line extending along the first electrode direction D1, and the plurality of short line portions 53E have inclinations having different sizes. A short line portion 53E having θ1 is included. That is, in the plurality of short line portions 53E, the absolute value of the inclination θ1 is not constant. The inclination θ1 is an angle other than 0 degree, and one inclination θ1 of the two short line portions 53E adjacent to each other is positive, and the other inclination θ1 is negative. In other words, in one sensing electrode line 53SR, the short line portion 53E having a positive inclination θ1 and the short line portion 53E having a negative inclination θ1 are alternately repeated along the first electrode direction D1. . The absolute value of the inclination θ1 varies irregularly with respect to the order of arrangement of the short line portions 53E among the plurality of short line portions 53E arranged along the first electrode direction D1.

  The plurality of bent portions 53Q include a separated bent portion 53Qa and a connecting bent portion 53Qb. The separation bend 53Qa has an arc shape and faces the separation bend 53Qa of the sensing electrode line 53SR adjacent to the sensing electrode line 53SR having the separation bend 53Qa with a gap. The short wire portion 53E connected to the separated bent portion 53Qa continuously extends from the arc formed by the separated bent portion 53Qa.

  Here, a virtual straight line extending over the short line portion 53E is the virtual line K1, and an intersection of the virtual lines K1 set for each of the two short line portions 53E sandwiching one separated bent portion 53Qa is a virtual line. The intersection point is 53KP. In other words, the virtual intersection point 53KP is an intersection point of the extended lines of the two short line portions 53E connected to both ends of the one separated bent portion 53Qa. On each of one side and the other side of the second electrode direction D2 with respect to the sensing electrode line 53SR, the position of the virtual intersection point 53KP in the second electrode direction D2 is relative to the order of arrangement of the virtual intersection points 53KP among the plurality of virtual intersection points 53KP. It is changing irregularly.

  In the sensing electrode lines 53SR adjacent to each other along the second electrode direction D2, the positions of the virtual intersection points 53KP with respect to each of the two spaced apart bent portions 53Qa are the same. In other words, of the sensing electrode lines 53SR that are adjacent to each other along the second electrode direction D2, the extension lines of the two short line portions 53E that are connected to both ends of the separated bent portion 53Qa of one sensing electrode line 53SR, Each extension line of the two short line portions 53E facing the separation bend portion 53Qa and connected to both ends of the separation bend portion 53Qa of the other sensing electrode line 53SR intersects at one point.

  The curvature of the separated bent portion 53Qa is constant within one separated bent portion 53Qa. Further, in the plurality of spaced-apart bent portions 53Qa included in the sensing electrode line 53SR, the curvature of each separated bent portion 53Qa may be constant or different.

  The connection bent portion 53Qb has a dot shape, and is connected to the connection bend portion 53Qb of the sensing electrode wire 53SR adjacent to the sensing electrode wire 53SR having the connection bend portion 53Qb. In one sensing electrode line 53SR, two adjacent short line portions 53E across the connection bent portion 53Qb are connected at the position of the connection bent portion 53Qb, and the connection bent portion 53Qb and these two short line portions 53E are: A polygonal line portion is formed.

  In one sensing electrode 33SP, the sensing electrode line 53SR is connected to at least one location by connecting the other sensing electrode line 53SR adjacent to the sensing electrode line 53SR and the connecting bent portions 53Qb.

  When disconnection occurs at two locations of one electrode wire, the portion sandwiched between the disconnection locations of this electrode wire becomes a floating portion insulated from the surroundings, and the occurrence of the floating portion is caused by the detection accuracy of the contact position. Causes a drop. If the sensing electrode line 53SR is connected to the other adjacent sensing electrode line 53SR at the connection bent portion 53Qb, it is assumed that the disconnection occurs at two positions sandwiching the connection bent portion 53Qb in the sensing electrode line 53SR. However, since the portion sandwiched between the disconnection portions is electrically connected to the other sensing electrode wire 53SR at the connection bent portion 53Qb, it is not insulated from the surroundings. Therefore, the generation of the floating portion due to the disconnection of the electrode wire is suppressed.

  As the number of connection bent portions 53Qb increases, the generation of floating portions is suppressed. However, when there are too many connection bending parts 53Qb, the following problems will arise. That is, four corners formed by the electrode wires gather around the connection bent portion 53Qb. It is difficult to precisely form the shape where the corners gather as designed, especially when the electrode wire is formed by etching a metal thin film, the line width of the electrode wire at the corner is larger than the design dimension. The connection bent portion 53Qb is easily visually recognized in a dot shape. Therefore, if there are too many connection bending parts 53Qb, the quality of the image visually recognized by the display apparatus 100 may be reduced.

  Therefore, in order to suppress the occurrence of the floating portion and to suppress the deterioration of the image quality, the sensing electrode is provided between the two connection bent portions 53Qb adjacent to each other along the sensing electrode line 53SR. It is preferable that 5 or more and 19 or less separated bent portions 53Qa are located along the line 53SR, and more preferably 9 or more and 13 or less separated bent portions 53Qa are located. Moreover, when the periodicity of the arrangement of the connection bent portions 53Qb is high, moire is visually recognized when the pixel pattern of the display panel 10 and the electrode line pattern of the touch panel 20 are overlapped due to such periodicity. There is. In order to suppress such moire, it is preferable that the connection bent portions 53Qb are arranged at irregular intervals.

  On the other hand, sensing electrode lines 53SR that constitute different sensing electrodes 33SP, that is, sensing electrode lines 53SR that are adjacent to each other across the broken line N1 do not have a portion where the bent portion 53Q is connected between these electrode lines.

With reference to FIG. 6, the structure of the separation | extension bending part 53Qa is explained in full detail.
As shown in FIG. 6, the arc formed by the separated bent portion 53Qa is separated from the separated bent portion 53Qa and the short line by a virtual line K1 set for each of the two short line portions 53E connected to both ends of the separated bent portion 53Qa. It is the circular arc of the circle C which touches at the connection point with the part 53E. A connection point between the separated bent portion 53Qa and the short line portion 53E is a boundary between a portion where the curvature exceeds 0 and a portion where the curvature is 0 in the bent line formed by the sensing electrode wire 53SR. The short line portion 53E extends from the end of the arc formed by the separated bent portion 53Qa so as to follow the tangent line of the separated bent portion 53Qa at the end. For example, when the short line portion 53E is sandwiched between two separated bent portions 53Qa and connected to the separated bent portions 53Qa, the short line portion 53E is configured between the two separated bent portions 53Qa. It extends from each end of the circular arc to follow the tangent of the separated bent portion 53Qa at the end.

  The above configuration is a configuration in the case where the sensing electrode line 53SR is regarded as an ideal line having no width. In the actual sensing electrode line 53SR having a line width, the center in the width direction of the sensing electrode line 53SR is used. By defining the virtual line K1 and the circle C so as to pass through the section, the above configuration is established.

[How to create sensing electrode wires]
With reference to FIG. 7 to FIG. 10, a method for creating a pattern including the plurality of sensing electrode lines 53SR described above will be described. The pattern of the sensing electrode line 53SR of the present embodiment is created based on a reference pattern that is a pattern in which a plurality of rhombuses are regularly arranged. First, the reference pattern will be described with reference to FIG.

  As shown in FIG. 7A, the reference pattern is a lattice-like pattern composed of a plurality of straight lines extending in a direction inclined with respect to both the first electrode direction D1 and the second electrode direction D2. . The reference pattern is a pattern in which a plurality of rhombuses are arranged without gaps along each of the first electrode direction D1 and the second electrode direction D2.

  Here, the reference pattern is a pattern in which a plurality of sensing reference electrode lines 40KR that are virtual electrode lines having a polygonal line shape and extending along the first electrode direction D1 are arranged along the second electrode direction D2. It can be seen. FIG. 7B shows one sensing reference electrode line 40KR extracted from the reference pattern.

  Each of the plurality of sensing reference electrode lines 40KR is a set of two kinds of reference short line portions 40E having a linear shape and different inclinations, and two kinds of reference electrode lines 40KR that are alternately repeated along the first electrode direction D1. A reference short line portion 40E and a reference bent portion 40Q that is a portion to which two types of reference short line portions 40E are connected are included. The reference bent portion 40Q is point-like. In other words, each of the plurality of sensing reference electrode lines 40KR has a polygonal line shape in which a plurality of reference short line portions 40E are connected via the reference bent portion 40Q and extend along the first electrode direction D1.

  Each of the two types of reference short line portions 40E has a length Lk along the direction in which the reference short line portions 40E extend. The lengths Lk of the plurality of reference short line portions 40E are all equal. Of the two types of reference short line portions 40E, one reference short line portion 40Ea has an inclination of an angle + θk with respect to the base axis A1 that is a straight line extending along the first electrode direction D1, and the other reference short line portion 40Eb. Has an inclination of an angle −θk with respect to the base axis A1. An angle formed by two reference short line portions 40E adjacent to each other is a reference angle Kαs, and the reference angles Kαs in the plurality of sensing reference electrode lines 40KR are all equal. The reference angle Kαs is divided into two equal parts by a straight line that passes through the reference bent portion 40Q and extends in the direction along the second electrode direction D2.

  In other words, the plurality of reference bent portions 40Q are configured by a mountain portion in the figure, which is an example of the first virtual bent portion, and a valley portion in the drawing, which is an example of the second virtual bent portion, and the first virtual bent portion and the first virtual bent portion The two virtual bent portions are alternately arranged periodically one by one along the sensing reference electrode line 40KR. The plurality of first virtual bent portions and the plurality of second virtual bent portions are located on separate straight lines extending along the first electrode direction D1.

  The length between the reference bent portions 40Q adjacent along the first electrode direction D1 is the reference period KWs. That is, the reference period KWs is the length between the first virtual bent portions adjacent to each other on one side in the second electrode direction D2 in the sensing reference electrode line 40KR and is adjacent to each other on the other side in the second electrode direction D2. This is the length between the matching second virtual bent portions. In the plurality of sensing reference electrode lines 40KR, the reference period KWs is constant.

  The plurality of sensing reference electrode lines 40KR are arranged along the second electrode direction D2 in a state where the phases are inverted. That is, in the sensing reference electrode lines 40KR that are adjacent to each other along the second electrode direction D2, the phases of the portions aligned along the second electrode direction D2 are opposite in phase. The phase is a position in the first electrode direction D1 within one period in the sensing reference electrode line 40KR. Then, in two adjacent sensing reference electrode lines 40KR, the reference bent portions 40Q on the side close to the adjacent sensing reference electrode line 40KR, that is, one side in the second electrode direction D2 in one sensing reference electrode line 40KR Is connected to the other reference bending portion 40Q in the second electrode direction D2 of the other sensing reference electrode line 40KR. In other words, in two adjacent sensing reference electrode lines 40KR, the first virtual bending part of one sensing reference electrode line 40KR and the second virtual bending part of the other sensing reference electrode line 40KR are connected. .

  The arrangement interval of the plurality of sensing reference electrode lines 40KR, that is, between the reference bending parts 40Q that are the first virtual bending parts, or the reference bending part that is the second virtual bending part, in the sensing reference electrode lines 40KR adjacent to each other. The distance along the second electrode direction D2 between the 40Qs is the reference interval KPs. In other words, the reference interval KPs is on the reference bending portion 40Q located on one side of the second electrode direction D2 in one sensing reference electrode line 40KR, that is, on the other side of the first virtual bending portion and the second electrode direction D2. It is the length along the second electrode direction D2 between the reference bent portion 40Q, that is, the second virtual bent portion, and the width occupied by one sensing reference electrode line 40KR in the second electrode direction D2.

  The parameters of the reference angle Kαs, the reference period KWs, and the reference interval KPs are values that suppress the occurrence of moire when the reference pattern and the pixel pattern of the display panel 10 are superimposed using Fourier analysis. It is preferably set. Specifically, moire generated when a pattern obtained by superimposing a reference pattern used to create the sensing electrode line 53SR and a reference pattern used to create the drive electrode line 51DR is superimposed on a pixel pattern having a predetermined period. The contrast and the pitch and angle of the stripes visually recognized as moire are calculated. Based on the calculation result, the value of each parameter is set so that the moire is less visible. At this time, it is preferable that the values of the respective parameters that can suppress the occurrence of moire are commonly obtained for the pixel patterns of the plurality of display panels 10 having different sizes and different resolutions. The plurality of display panels 10 to be superimposed may include at least two types of display panels having different sizes or two types of display panels having different resolutions.

  In Fourier analysis, frequency information is obtained by performing Fourier transform on the superimposed pattern, and the obtained two-dimensional Fourier pattern is convolved (convolution), then applied with a two-dimensional mask, and then subjected to inverse Fourier transform. To reconstruct the image. Since the pitch of the moire is larger than the period of the original pattern to be superimposed, it is only necessary that the two-dimensional mask removes high-frequency components by the two-dimensional mask and extracts only low-frequency components. By setting the size of the mask to a size that is determined according to the human visual response characteristics, the degree of moiré that is visible is determined after calculating the moiré contrast, pitch, and angle after image reconstruction. it can.

  The reference interval KPs is preferably set in the range of 10% to 600% of the first pixel width P1 and the second pixel width P2 in the display panel 10. When the first pixel width P1 and the second pixel width P2 are different, the larger pixel width of the first pixel width P1 and the second pixel width P2 may be used as a reference. If the reference interval KPs is 10% or more of the first pixel width P1 and the second pixel width P2, the proportion of the electrode lines in the pattern created based on the sensing reference electrode line 40KR is not excessive. And the fall of the light transmittance in touch panel 20 is controlled. On the other hand, if the reference interval KPs is 600% or less of the first pixel width P1 and the second pixel width P2, the position detection accuracy on the touch panel is improved.

Further, the reference angle Kαs is preferably 95 degrees or more and 150 degrees or less, and more preferably 100 degrees or more and 140 degrees or less. When the reference angle Kαs is 95 degrees or more, the number of the reference short line portions 40E is increased, and the proportion of the electrode lines in the pattern is suppressed from being excessive. On the other hand, when the reference angle Kαs is 150 degrees or less, it is easy to set the reference interval KPs and the reference period KWs to values within an appropriate range.
With reference to FIGS. 8 to 10, a method of creating a pattern composed of a plurality of sensing electrode lines 53SR based on the reference pattern will be described.

  As shown in FIG. 8, first, with respect to the sensing reference electrode lines 40KR having the same phase among the plurality of sensing reference electrode lines 40KR, the positions of the reference bent portions 40Q in these sensing reference electrode lines 40KR are irregularly arranged. A sensing displacement electrode wire 45TR having a displaced broken line shape is set. In other words, the sensing reference electrode lines 40KR having the same phase are selected every other sensing reference electrode line 40KR along the second electrode direction D2 among the sensing reference electrode lines 40KR arranged in the second electrode direction D2. It is.

  The displacement bending portion 45Q of the sensing displacement electrode wire 45TR is disposed at a position displaced with respect to the reference bending portion 40Q of the sensing reference electrode wire 40KR. And the displacement bending part 45Q is located in the displacement area | region Ss set for every reference | standard bending part 40Q. That is, the displacement bending portion 45Q is located at a position where the reference bending portion 40Q is irregularly displaced within the displacement region Ss with respect to the order of arrangement of the reference bending portions 40Q along the sensing reference electrode line 40KR.

  The displacement region Ss has a rectangular shape centered on the reference bent portion 40Q. Specifically, the rectangle constituting the displacement region Ss has a side extending along the first electrode direction D1 and a side extending along the second electrode direction D2, and the reference bent portion 40Q is formed at the intersection of the diagonal lines of the rectangle. To position. The length ds1 along the first electrode direction D1 in the displacement region Ss is preferably set in a range of 0.05 to 0.45 times the reference period KWs. The length ds2 along the second electrode direction D2 in the displacement region Ss is preferably set in a range from 0.05 times to 0.45 times the reference interval KPs.

  As shown in FIG. 9, subsequently, there is a polygonal line shape between the two sensing displacement electrode lines 45TR adjacent along the second electrode direction D2 so that the displacement bending portions 45Q of these sensing displacement electrode lines 45TR are sequentially connected. A sensing displacement electrode line 46TR is set. That is, the sensing displacement electrode line 46TR includes a displacement bending portion 45Q located on one side of the second electrode direction D2 in one sensing displacement electrode line 45TR and the other sensing displacement electrode line 45TR, and the other sensing displacement electrode line 45TR. The sensing displacement electrode line 45TR has a polygonal line shape created by alternately connecting the displacement bent portions 45Q located on the other side in the second electrode direction D2. In other words, the sensing displacement electrode line 46TR has a polygonal line shape that connects the displacement bending portions 45Q closer to the adjacent sensing displacement electrode line 45TR in the two adjacent sensing displacement electrode lines 45TR.

  The position of the displacement bending portion 46Q of the sensing displacement electrode line 46TR coincides with the position of the displacement bending portion 45Q. The sensing displacement electrode line 46TR is irregularly positioned within the displacement region Ss with respect to the sensing reference electrode line 40KR having the opposite phase to the sensing reference electrode line 40KR that is the basis of the sensing displacement electrode line 45TR. It has a displaced polygonal line shape.

  As shown in FIG. 10, subsequently, sensing is performed by changing the shape of the displacement bending portions 45Q and 46Q of the sensing displacement electrode wires 45TR and 46TR in the vicinity of the displacement bending portions 45Q and 46Q to an arc shape. Electrode line 53SR is created. At this time, the sensing displacement electrode lines 45TR and 46TR which are adjacent to each other, and the sensing displacement electrode lines 45TR and 46TR which form the basis of the sensing electrode line 53SR constituting the common sensing electrode 33SP are the sensing displacement electrode lines 45TR. , 46TR share a part of the displacement bent portions 45Q, 46Q. The portion changed to the arc shape is the separated bending portion 53Qa of the sensing electrode wire 53SR, and the positions of the displacement bending portions 45Q and 46Q correspond to the position of the virtual intersection 53KP. On the other hand, a portion of the displacement bending portions 45Q and 46Q that has not been changed into an arc shape is a connection bending portion 53Qb of the sensing electrode wire 53SR.

  Further, regarding the sensing displacement electrode lines 45TR and 46TR which are adjacent to each other and are the basis of the sensing electrode line 53SR constituting the sensing electrodes 33SP which are different from each other, these sensing displacement electrode lines 45TR, All of the displacement bent portions 45Q, 46Q shared by 46TR are changed to an arc shape.

  As described above, the virtual intersection 53KP with respect to the sensing electrode line 53SR is relative to the reference bending portion 40Q of the sensing reference electrode line 40KR with respect to the arrangement order of the reference bending portions 40Q within the displacement region Ss for each reference bending portion 40Q. Are placed at irregularly displaced positions. Further, the connection bent portion 53Qb of the sensing electrode line 53SR is also arranged at a position that is irregularly displaced in the displacement region Ss with respect to the reference bent portion 40Q. In other words, the virtual intersection point 53KP and the connection bending portion 53Qb are irregular with respect to the reference bending portion 40Q with respect to the arrangement order of the reference bending portions 40Q in the sensing reference electrode line 40KR within the displacement region Ss for each reference bending portion 40Q. It is arranged at the position displaced.

The sensing displacement electrode lines 45TR and 46TR described above are virtual electrode lines used for explaining the process of creating the sensing electrode line 53SR from the sensing reference electrode line 40KR, and the sensing displacement electrode lines 45TR and 46TR The sensing electrode line 53SR may be created without an explicit setting.
With reference to FIG. 11, the relationship between the reference interval KPs of the sensing reference electrode line 40KR and the shape of the separation bent portion 53Qa of the sensing electrode line 53SR will be described.

  As shown in FIG. 11, the shortest distance along the second electrode direction D2 between the separated bent portions 53Qa between the separated bent portions 53Qa facing each other in the sensing electrode lines 53SR adjacent to each other along the second electrode direction D2. Is the separation distance Gp.

  The separation distance Gp is preferably 5 μm or more. If the separation distance Gp is 5 μm or more, the shape of the separation bent portion 53Qa is easily formed precisely. Further, the separation distance Gp is preferably not more than 0.25 times the reference interval KPs. If the separation distance Gp is too large, the gap between the sensing electrode lines 53SR adjacent to each other is easily recognized as a pattern having periodicity, and due to such periodicity, the pixel pattern of the display panel 10 and the electrode of the touch panel 20 Moire may be visually recognized when overlapping with a line pattern. If the separation distance Gp is 0.25 times or less of the reference interval KPs, it is possible to suitably suppress such moire from being visually recognized. In the drawings, the distance between the opposing bent portions 53Qa is shown more emphasized than actual.

  Further, the separated bent portion 53Qa has a curvature radius Rs in which the width occupied by the separated bent portion 53Qa in the first electrode direction D1 is at least twice the line width of the sensing electrode line 53SR, that is, the radius Rs of the circle C. Is preferred. Furthermore, in order to suppress moire, the ratio of the curvature radius Rs of the separated bent portion 53Qa to the reference interval KPs is preferably 0.5 or less. As the radius of curvature Rs increases, the length of the short line portion 53E decreases.

[Configuration of drive electrode]
The configuration of the drive electrode 31DP will be described with reference to FIG.
As shown in FIG. 12, the drive electrode line 51DR has a bent line shape extending in the second electrode direction D2 while repeating bending, and a reference electrode having a regular broken line shape like the sensing electrode line 53SR. Created based on a line.

  Specifically, drive electrode line 51DR has a plurality of linear shapes that connect a plurality of bent portions 51Q including separation bent portions 51Qa and connection bent portions 51Qb, and bent portions 51Q adjacent to each other along drive electrode line 51DR. Short line portion 51E.

  The plurality of drive electrode lines 51DR are arranged along the first electrode direction D1. A plurality of drive electrode lines 51DR constituting one drive electrode 31DP are connected to a common drive pad 31P at one end in the second electrode direction D2. A broken line N2 in FIG. 12 indicates a boundary between adjacent drive electrodes 31DP. That is, the drive electrode lines 51DR that are adjacent to each other across the broken line N2 constitute different drive electrodes 31DP and are connected to different drive pads 31P.

  The length along the direction in which the short line portion 51E extends varies irregularly with respect to the order of arrangement of the short line portions 53E among the plurality of short line portions 53E arranged along the second electrode direction D2. In addition, the inclination of the short line portion 51E with respect to a straight line extending along the second electrode direction D2 varies irregularly with respect to the order of arrangement of the short line portions 53E among the plurality of short line portions 53E. In one drive electrode line 51DR, the short line portion 51E having a positive inclination and the short line portion 51E having a negative inclination are alternately repeated along the second electrode direction D2.

  The separated bent portion 51Qa has an arc shape, and faces the separated bent portion 51Qa of the drive electrode line 51DR adjacent to the drive electrode line 51DR having the separated bent portion 51Qa with a gap. The short line portion 51E connected to the separation bending portion 51Qa extends from the end of the arc formed by the separation bending portion 51Qa so as to follow the tangent of the separation bending portion 51Qa at the end. The curvature of the separated bent portion 51Qa is constant within one separated bent portion 51Qa. Further, in the plurality of spaced bent portions 51Qa included in the drive electrode line 51DR, the curvature of each separated bent portion 51Qa may be constant or different.

  The intersection of the extended lines of the two short line portions 51E connected to both ends of one separated bent portion 51Qa is a virtual intersection 51KP, and the two opposing drive electrode lines 51DR that are adjacent to each other along the first electrode direction D1. The position of the virtual intersection 51KP with respect to each of the two separated bent portions 51Qa coincides.

  The connection bent portion 51Qb has a dot shape and is connected to the connection bend portion 51Qb of the drive electrode line 51DR adjacent to the drive electrode line 51DR having the connection bend portion 51Qb. In one drive electrode line 51DR, two adjacent short line portions 51E across the connection bent portion 51Qb are connected at the position of the connection bent portion 51Qb, and the connection bent portion 51Qb and these two short line portions 51E are: A polygonal line portion is formed.

  In one drive electrode 31DP, the drive electrode line 51DR is connected to at least one place by connecting the other drive electrode line 51DR adjacent to the drive electrode line 51DR and the connection bent portions 51Qb. In order to suppress the occurrence of the floating portion and to suppress the deterioration of the image quality, the drive electrode line 51DR is connected between two adjacent connection bent portions 51Qb along the drive electrode line 51DR. It is preferable that 5 or more and 19 or less spaced-apart bent portions 51Qa are located along, and more preferably 9 or more and 13 or less spaced-apart bent portions 51Qa are located. Moreover, it is preferable that the connection bending part 51Qb is arrange | positioned at irregular intervals.

  On the other hand, the drive electrode lines 51DR constituting the different drive electrodes 31DP, that is, the drive electrode lines 51DR adjacent to each other across the broken line N2 do not have a portion where the bent portion 51Q is connected between these electrode lines.

  As shown in FIG. 13A, a pattern composed of a plurality of drive electrode lines 51DR is created based on a reference pattern that is a pattern in which a plurality of rhombuses are regularly arranged in the same manner as the pattern of the sensing electrode lines 53SR. Is done.

  The reference pattern is regarded as a pattern in which a plurality of drive reference electrode lines 41KR, which are virtual electrode lines having a polygonal line shape and extending along the second electrode direction D2, are arranged along the first electrode direction D1. . FIG. 13B shows one drive reference electrode line 41KR extracted from the reference pattern.

  The drive reference electrode line 41KR includes two types of reference short line portions 41E that are alternately repeated along the first electrode direction D1, and a reference bent portion 41Q that is a portion to which the two types of reference short line portions 41E are connected. Yes. The lengths of the two types of reference short line portions 41E are constant. Of the two types of reference short line portions 41E, one reference short line portion 41E has a positive inclination with respect to a straight line extending along the second electrode direction D2, and the other reference short line portion 41E extends in the second electrode direction D2. The slopes with respect to the straight line extending along are negative, and the absolute values of these slopes are equal. In the drive reference electrode line 41KR, the reference bent portion 41Q located on one side in the first electrode direction D1 and the reference bent portion 41Q located on the other side are located on separate straight lines extending along the second electrode direction D2. .

  An angle formed by two reference short line portions 41E adjacent to each other is a reference angle Kαd, and the reference angles Kαd in the plurality of drive reference electrode lines 41KR are all equal. The length between the reference bent portions 41Q adjacent along the second electrode direction D2 is the reference period KWd. In the plurality of drive reference electrode lines 41KR, the reference period KWd is constant.

  The plurality of drive reference electrode lines 41KR are arranged along the first electrode direction D1 with the phases reversed. In other words, in the drive reference electrode lines 41KR that are adjacent to each other along the first electrode direction D1, the phases of the portions aligned along the first electrode direction D1 are opposite in phase. The phase is a position in the second electrode direction D2 within one cycle in the drive reference electrode line 41KR. Then, between two drive reference electrode lines 41KR adjacent to each other, a reference bent portion 41Q on one side of the first drive direction D1 in one drive reference electrode line 41KR and a first electrode in the other drive reference electrode line 41KR The reference bending portion 41Q on the other side in the direction D1 is connected.

  The arrangement interval of the plurality of drive reference electrode lines 41KR, that is, the distance along the first electrode direction D1 between the reference bent portions 40Q on one side of the first electrode direction D1 in the drive reference electrode lines 41KR adjacent to each other. , The reference interval KPd.

  In the drive reference electrode line 41KR, the reference angle Kαd, the reference period KWd, and the reference interval KPd are respectively the reference angle Kαs, the reference period KWs, and the reference interval KPs in the description of the sensing reference electrode line 40KR. It is preferable to set so as to satisfy the same conditions as those shown for. That is, the parameters of the reference angle Kαd, the reference period KWd, and the reference interval KPd may be set to values that suppress the occurrence of moire when the reference pattern and the pixel pattern of the display panel 10 are superimposed. preferable. The reference angle Kαd is preferably 95 degrees or more and 150 degrees or less, and more preferably 100 degrees or more and 140 degrees or less. The reference interval KPd is preferably set in the range of 10% to 600% of the first pixel width P1 and the second pixel width P2 in the display panel 10.

  The drive electrode line 51DR is also created based on the reference pattern in the same procedure as the sensing electrode line 53SR. That is, of the plurality of drive reference electrode lines 41KR, the drive reference electrode lines 41KR having the same phase have a polygonal line shape in which the positions of the reference bent portions 41Q in the drive reference electrode lines 41KR are irregularly displaced. A displacement electrode line which is a virtual electrode line is set. Then, a displacement electrode line having a polygonal line shape that sequentially connects the displacement bending portions, which are bending portions of these displacement electrode lines, is further set between two adjacent displacement electrode lines. The drive electrode line 51DR is created by changing the shape in the vicinity of the displacement bending portion to a circular arc shape with respect to a part of the displacement bending portion of the displacement electrode line thus set.

  Of the plurality of displacement bent portions, the portion changed into an arc shape is the separation bent portion 51Qa of the drive electrode line 51DR, and the position of the displacement bent portion corresponds to the position of the virtual intersection 51KP. On the other hand, the portion of the displacement bent portion that has not been changed to the arc shape is the connection bent portion 51Qb of the drive electrode line 51DR. The virtual intersection point 51KP and the connection bent part 51Qb are irregularly displaced with respect to the reference bent part 41Q of the drive reference electrode line 41KR within the displacement region Sd for each reference bent part 41Q with respect to the arrangement order of the reference bent parts 41Q. It is arranged at the position.

  The displacement region Sd has a rectangular shape centered on the reference bent portion 41Q. The length dd1 along the second electrode direction D2 in the displacement region Sd is preferably set in a range from 0.05 times to 0.45 times the reference period KWd. The length dd2 along the first electrode direction D1 in the displacement region Sd is preferably set in a range from 0.05 times to 0.45 times the reference interval KPd.

  Also in the drive electrode 31DP, the spaced-apart bent portions 51Qa facing each other in the drive electrode lines 51DR adjacent to each other along the first electrode direction D1 are the shortest distance along the first electrode direction D1 between the separated bent portions 51Qa. The certain separation distance is preferably 5 μm or more. Further, the separation distance is preferably 0.25 times or less of the reference interval KPd.

[Configuration of electrode line pattern]
With reference to FIG. 14 and FIG. 15, an electrode line pattern which is a pattern formed by overlapping a plurality of sensing electrode lines 53SR and a plurality of drive electrode lines 51DR will be described.

  First, with reference to FIG. 14, the preferable shape and arrangement of the sensing reference electrode line 40KR and the drive reference electrode line 41KR will be described. In FIG. 14, in order to easily distinguish the sensing reference electrode line 40KR and the drive reference electrode line 41KR, the sensing reference electrode line 40KR is indicated by a thick black line, and the drive reference electrode line 41KR is indicated by a white line. ing.

  The pattern constituted by the plurality of sensing reference electrode lines 40KR and the pattern constituted by the plurality of drive reference electrode lines 41KR are preferably the same lattice pattern. That is, the reference period KWs of the sensing reference electrode line 40KR is twice the reference interval KPd of the drive reference electrode line 41KR (KWs = 2 × KPd), and the reference period KWd of the drive reference electrode line 41KR is the sensing reference electrode line It is preferably twice the reference interval KPs of 40 KR (KWd = 2 × KPs).

  In the conductive film 21, as viewed from the direction facing the surface of the transparent dielectric substrate 33, a pattern composed of a plurality of sensing electrode lines 53SR and a pattern composed of a plurality of drive electrode lines 51DR are superimposed. An electrode line pattern which is a pattern is formed. At this time, these electrode lines are overlapped so that the extending direction of the sensing electrode 33SP and the extending direction of the drive electrode 31DP are orthogonal to each other. Such an electrode line pattern includes a pattern composed of a plurality of sensing reference electrode lines 40KR and a pattern composed of a plurality of drive reference electrode lines 41KR. The direction in which the sensing reference electrode lines 40KR extend and the drive reference electrode lines 41KR It is a pattern based on a pattern superimposed so that the extending direction is orthogonal.

  As shown in FIG. 14, when KWs = 2 × KPd and KWd = 2 × KPs, the arrangement of the sensing reference electrode line 40KR with respect to the drive reference electrode line 41KR, that is, with respect to the reference bent portion 41Q and the reference short line portion 41E. The positions of the reference bent part 40Q and the reference short line part 40E are constant in the pattern. Therefore, it is possible to increase the uniformity of the arrangement density of the electrode lines in the pattern constituted by the reference electrode lines 40KR and 41KR. As a result, in the electrode line pattern constituted by the sensing electrode line 53SR and the drive electrode line 51DR. It is possible to suppress the density of the arrangement of the electrode lines from being excessively nonuniform in the pattern.

  For example, as shown in FIG. 14, the pattern of the sensing reference electrode line 40KR and the pattern of the drive reference electrode line 41KR are arranged so that the lattices formed by the patterns are shifted by a half pitch. In other words, in the pattern composed of the reference electrode lines 40KR and 41KR, the reference bent part 40Q of the sensing reference electrode line 40KR is located at the center of the rhombus formed by the drive reference electrode lines 41KR adjacent to each other. Further, the reference bent portion 40Q of the drive reference electrode line 41KR is located at the center of the rhombus formed by the sensing reference electrode lines 40KR adjacent to each other. The midpoint of the reference short line portion 40E of the sensing reference electrode line 40KR and the midpoint of the reference short line portion 41E of the drive reference electrode line 41KR intersect.

  FIG. 15 shows an electrode line pattern composed of sensing electrode line 53SR and drive electrode line 51DR created based on the pattern composed of reference electrode lines 40KR and 41KR shown in FIG.

  Since the sensing electrode line 53SR and the drive electrode line 51DR constituting the electrode line pattern have a bent line shape that is irregularly bent, the electrode line pattern has a difference in density of the electrode lines, that is, the electrode lines are densely arranged. In some cases, a region to be formed and a region in which the electrode lines are sparse are generated. However, if the density of the electrode lines in the pattern is excessively non-uniform, the difference in the density of the electrode lines causes unevenness such as brightness in the area where the electrode line pattern is located. It may be a factor causing the phenomenon. Grain is a phenomenon in which flickering distributed in a sand shape or glare of the screen is felt when viewed from the operation surface 20S of the touch panel 20.

  As a pattern composed of the reference electrode lines 40KR and 41KR, an electrode line pattern is created by using a pattern having a high uniformity in the arrangement density of the electrode lines. It is possible to suppress excessive non-uniformity in the interior.

[Action]
The operation of this embodiment will be described. Since the electrode line pattern of the present embodiment is a pattern composed of a figure different from the rectangle, compared to a pattern in which rectangles of the same shape are repeated, such as a pattern in which electrode lines extending in a straight line intersect, The periodicity of the pattern is low. Accordingly, since the shift between the pixel pattern and the electrode line pattern is not easily recognized as a shift between the two periodic structures, moire is visually recognized when the electrode line pattern of the present embodiment is superimposed on the pixel pattern of the display panel 10. Is suppressed. As a result, deterioration in the quality of the image visually recognized on the display device 100 can be suppressed.

  In particular, since each of the sensing electrode line 53SR and the drive electrode line 51DR constituting the electrode line pattern has an irregular bent line shape, it is compared with a case where the pattern is constituted by electrode lines having a regular bent line shape. Thus, the periodicity of the pattern becomes lower. Therefore, when the electrode line pattern and the pixel pattern are overlaid, it is possible to more suitably suppress the moire from being visually recognized.

  In addition, part of the periodicity of the patterns of the reference electrode lines 40KR and 41KR may remain in the electrode line pattern including the sensing electrode line 53SR and the drive electrode line 51DR. In the present embodiment, the reference angle lines Kαs, Kαd, the reference periods KWs, KWd, and the reference intervals KPs, KPd are set to electrode line patterns from the patterns of the reference electrode lines 40KR, 41KR, which are set to values at which moire does not easily occur. Is created. Therefore, when the electrode line pattern and the pixel pattern are overlapped, it is possible to suppress the moiré due to the periodicity of the reference electrode lines 40KR and 41KR from being visually recognized.

  Each of the plurality of sensing electrode lines 53SR and the plurality of drive electrode lines 51DR has a pattern of the reference electrode lines 40KR and 41KR in which the phases are inverted in the electrode lines adjacent to each other and the bent portions are connected to each other. On the other hand, the pattern is created based on irregularly displacing the position of the bent portion. Therefore, in the sensing electrode lines 53SR adjacent to each other, the separated bent portions 53Qa face each other, and the positions of the virtual intersection points 53KP with respect to these separated bent portions 53Qa coincide. Similarly, in the drive electrode lines 51DR adjacent to each other, the separated bent portions 51Qa face each other, and the positions of the virtual intersection points 51KP with respect to the opposed separated bent portions 51Qa coincide.

  In such a configuration, short-line portions having the same inclination do not line up along the first electrode direction D1 or the second electrode direction D2. Therefore, the strip-shaped region where the short-line portions having the same inclination are formed so as to extend in the direction in which the electrode lines are aligned, and the two types of strip-shaped regions having different short-line extending directions are alternately arranged. Does not happen. Accordingly, it is possible to suppress the band-like pattern from being visually recognized by the reflection of external light, particularly when the display device 100 is not lit, and to reduce the appearance quality viewed from the operation surface 20S.

  Further, as described above, in the portion where the corner portions are gathered in the electrode line pattern, the line width of the electrode lines at the corner portions is larger than the design dimension, and the corner portions are easily visually recognized as dots. Therefore, if the pattern of the displacement electrode line that is only the displacement of the reference bent portions 40Q and 41Q of the reference electrode lines 40KR and 41KR is an electrode line pattern, in other words, all the bent portions included in the electrode line pattern are In the case of the connection bent portions 53Qb and 51Qb, since there are many corner portions, the portion that is visually recognized in a dot shape increases, and the quality of the image visually recognized on the display device 100 is deteriorated. On the other hand, in the present embodiment, since some of the bent portions 53Q and 53Q are the arc-shaped separated bent portions 53Qa and 51Qa, deterioration in image quality can be suppressed. Further, some of the bent portions 53Q and 51Q are formed as connection bent portions 53Qb and 51Qb, and the electrode wires adjacent to each other are connected at the connection bent portions 53Qb and 51Qb, so that a floating portion is generated due to disconnection of the electrode wires. It can be suppressed.

  In the above embodiment, the transparent dielectric substrate 33 is an example of a transparent dielectric layer. When the surface of the transparent dielectric substrate 33 is the first surface, the back surface of the transparent dielectric substrate 33 is the second surface, the sensing electrode 33SP is the first electrode, and the sensing electrode line 53SR is the first electrode line. The drive electrode 31DP is the second electrode, and the drive electrode line 51DR is the second electrode line. In addition, the sensing reference electrode line 40KR is a first reference electrode line, and the drive reference electrode line 41KR is a second reference electrode line. The first electrode direction D1 is the first direction and the second intersecting direction, and the second electrode direction D2 is the second direction and the first intersecting direction.

When the surface of the transparent dielectric substrate 33 is the second surface, the back surface of the transparent dielectric substrate 33 is the first surface, the sensing electrode 33SP is the second electrode, and the sensing electrode line 53SR is the second electrode line. The drive electrode 31DP is the first electrode, and the drive electrode line 51DR is the first electrode line. In addition, the sensing reference electrode line 40KR is a second reference electrode line, and the drive reference electrode line 41KR is a first reference electrode line. The first electrode direction D1 is the second direction and the first intersecting direction, and the second electrode direction D2 is the first direction and the second intersecting direction.
Further, the separated bent portions 53Qa and 51Qa having an arc shape are examples of the arc-shaped bent portion.

As described above, according to the present embodiment, the effects listed below can be obtained.
(1) In the sensing electrode lines 53SR adjacent to each other, the separated bent portions 53Qa face each other, and the positions of the virtual intersection points 53KP with respect to the separated bent portions 53Qa coincide. In such a configuration, a strip-shaped region in which the short line portions extending in the same direction are arranged along the second electrode direction D2 is formed, and two types of strip-shaped regions in which the short line portions extend are different from each other. Alternation along the one-electrode direction D1 is suppressed. Accordingly, it is possible to suppress such a band-like pattern resulting from the arrangement of the band-like regions from being visually recognized by reflected light or the like, and it is possible to suppress the appearance quality viewed from the operation surface 20S from being lowered. Similarly, in the drive electrode lines 51DR adjacent to each other, the separated bent portions 51Qa face each other, and the positions of the virtual intersection points 51KP with respect to these separated bent portions 51Qa coincide. In such a configuration, a strip-shaped region in which the short line portions extending in the same direction are arranged along the first electrode direction D1 is formed, and two types of strip-shaped regions in which the short line portions extend are different from each other. It is possible to suppress the alternating arrangement along the two-electrode direction D2. Accordingly, it is possible to suppress such a band-like pattern resulting from the arrangement of the band-like regions from being visually recognized, and to suppress deterioration in the quality of the appearance viewed from the operation surface 20S.

  In addition, the formation of the band-shaped region is also suppressed by the irregular inclination of the short line portion 53E in the sensing electrode line 53SR and the irregular inclination of the short line portion 51E in the drive electrode line 51DR.

  (2) Since the sensing electrode line 53SR has a bent line shape that bends irregularly, the periodicity in the electrode line pattern can be suppressed lower than a configuration having a bent line shape that the sensing electrode line bends regularly. . Therefore, it is possible to appropriately suppress the moire from being visually recognized by a pattern in which the electrode line pattern and the pixel pattern are superimposed. Similarly, since the drive electrode line 51DR has a bent line shape that bends irregularly, it is possible to appropriately suppress the moire from being visually recognized in a pattern in which the electrode line pattern and the pixel pattern are superimposed.

  (3) In one sensing electrode 33SP, adjacent sensing electrode lines 53SR are connected by a connection bent portion 53Qb. Similarly, drive electrode lines 51DR adjacent to each other in one drive electrode 31DP are connected by a connection bent portion 51Qb. According to such a configuration, the generation of the floating portion due to the disconnection of the electrode wire is suppressed, and as a result, a decrease in the detection accuracy of the contact position is suppressed.

  (4) The separated bent portions 53Qa and 51Qa have an arc shape, and the short line portions 53E and 51E connected to the separated bent portions 53Qa and 51Qa are separated from the ends of the arcs formed by the separated bent portions 53Qa and 51Qa. It extends so as to follow the tangent line of the bent portions 53Qa and 51Qa. According to such a configuration, the extending direction of the electrode line changes gently at the bent portion as compared with the configuration in which the separated bent portions 53Qa and 51Qa are in the shape of a broken line, so that the line width of the electrode line is uniform according to the design dimension. Easy to form. Therefore, it is suppressed that the separated bent portions 53Qa and 51Qa are easily visually recognized due to the increase in the line width at the separated bent portions 53Qa and 51Qa. Therefore, it is possible to suppress the deterioration of the quality of the image visually recognized on the display device 100.

  (5) The plurality of sensing electrode lines 53SR have virtual intersections at positions where the phases of the electrode lines adjacent to each other are reversed and the reference bending part 40Q of the sensing reference electrode line 40KR connected to the bending part is displaced. 53KP is arranged. Similarly, the plurality of drive electrode lines 51DR are virtually positioned at positions displaced from the reference bent part 41Q of the drive reference electrode line 41KR of the drive reference electrode line 41KR whose phase is inverted in the electrode lines adjacent to each other and to which the bent part is connected. The intersection 51KP is arranged. According to such a configuration, an electrode wire capable of obtaining the effects (1) and (2) is accurately realized.

  (6) In the displacement region Ss in which the virtual intersection 53KP is displaced with respect to the reference bent portion 40Q of the sensing reference electrode line 40KR, the length ds1 along the first electrode direction D1 is 0.05 of the reference period KWs. The length ds2 along the second electrode direction D2 is in the range from 0.05 times to 0.45 times the reference interval KPs. If the lengths ds1, ds2 are equal to or greater than the lower limit, an electrode wire shape in which the periodicity of the sensing reference electrode wire 40KR is sufficiently broken can be obtained as the sensing electrode wire 53SR. On the other hand, if the lengths ds1, ds2 are equal to or smaller than the upper limit, the sensing electrode wire 53SR can be prevented from having an excessively irregular bent line shape. Therefore, it is suppressed that the density of the arrangement of the electrode lines in the electrode line pattern becomes excessively non-uniform in the pattern. Similarly, in the displacement region Sd in which the virtual intersection 51KP is displaced with respect to the reference bent portion 41Q of the drive reference electrode line 41KR, the length dd1 along the second electrode direction D2 is 0.05 of the reference period KWd. The length dd2 along the first electrode direction D1 is in the range of 0.05 times to 0.45 times the reference interval KPd. If the lengths dd1 and dd2 are equal to or greater than the lower limit, an electrode line shape in which the periodicity of the drive reference electrode line 41KR is sufficiently broken can be obtained as the drive electrode line 51DR. On the other hand, if the lengths dd1 and dd2 are equal to or smaller than the upper limit value, the drive electrode line 51DR can be prevented from having an excessively irregular bent line shape. Therefore, it is suppressed that the density of the arrangement of the electrode lines in the electrode line pattern becomes excessively non-uniform in the pattern.

  (7) The reference period KWs of the sensing reference electrode line 40KR is twice the reference interval KPd of the drive reference electrode line 41KR, and the reference period KWd of the drive reference electrode line 41KR is equal to the reference interval KPs of the sensing reference electrode line 40KR. 2 times. According to such a configuration, the reference bent portion of the sensing reference electrode line 40KR with respect to the reference bent portion 41Q of the drive reference electrode line 41KR in a pattern in which the plurality of sensing reference electrode lines 40KR and the plurality of drive reference electrode lines 41KR are overlapped. The position of 40Q is constant in the pattern. Therefore, it is possible to form a pattern so that the arrangement density of the electrode lines in the pattern is uniform, and even in the electrode line pattern created based on such a pattern, the density of the arrangement of the electrode lines Is suppressed from becoming excessively non-uniform. Therefore, since it is suppressed that the grain which arises due to the density difference of an electrode wire is visually recognized, the fall of the quality of the image visually recognized with the display apparatus 100 is suppressed.

(Modification)
The above embodiments can be implemented with the following modifications.
In the above embodiment, the separated bent portions 53Qa and 51Qa have an arc shape, but the shape of the separated bent portions 53Qa and 51Qa is not limited to an arc shape. The separated bent portions 53Qa and 51Qa may have a curved shape different from the arc shape, or may have a polygonal line shape. FIG. 16 shows an example of a bent line bent portion that is a separated bent portion 53Qa having a broken line shape.

  As shown in FIG. 16, the separated bent portion 53Qa has a polygonal line shape connecting a plurality of intermediate points P arranged between two short line portions 53E adjacent to each other along the sensing electrode line 53SR. The intermediate point P is formed by connecting a virtual intersection 53KP, which is an intersection of the extension lines of the two adjacent short line portions 53E, and an end of the two short line portions 53E on the side close to the virtual intersection 53KP. Located inside the triangular area. For example, the intermediate point P may be located on a circle that is in contact with the virtual line K1 at the ends of the two short line portions 53E. The separation bent portion 53Qa passes from the end of one short line portion 53E of the two short line portions 53E through the intermediate point P in order from the point where the position in the first electrode direction D1 is close to the end portion, and the other short line portion 53E. It extends to the end. Such separated bent portions 53Qa have a polygonal line shape in which peaks are continuous.

  The greater the number of intermediate points P, the larger the angle of the corner formed at the portion where the separated bent portion 53Qa bends, so the change in the extending direction of the electrode line becomes more gradual. Therefore, the line width of the electrode line is easily formed uniformly according to the design dimension. According to such a viewpoint, the number of intermediate points P is preferably 2 or more.

  Even when the separated bent portion 53Qa has a shape different from the arc shape, the separated distance Gp is the shortest distance along the second electrode direction D2 between the two separated bent portions 53Qa facing each other.

  As described above, the separated bent portion 53Qa is shorter in the second electrode direction D2 than the virtual intersection 53KP that is the intersection of the extended lines of the two short line portions 53E adjacent to each other along the sensing electrode line 53SR. What is necessary is just to connect these short wire | line parts 53E in the side near the part 53E. In other words, the separated bent portion 53Qa is formed in the triangular region formed by connecting the virtual intersection 53KP and the end portions of the two short line portions 53E in a straight line, and the two short line portions 53E. What is necessary is just to connect edge parts. Similarly, the separated bent portion 51Qa is shorter than the virtual intersection 51KP, which is the intersection of the extension lines of the two short line portions 51E adjacent to each other along the drive electrode line 51DR, in the first electrode direction D1. It suffices if these short line portions 51E are connected on the side close to.

  In the sensing electrode line 53SR, the plurality of separated bent portions 53Qa may include differently bent bent portions 53Qa, and in the drive electrode line 51DR, the plurality of separated bent portions 51Qa are different from each other. A spaced apart bent portion 51Qa may be included. Further, the shape of the separated bent portion 53Qa and the shape of the separated bent portion 51Qa may be different.

  In one sensing electrode 33SP, the sensing electrode line 53SR may be connected to the other adjacent sensing electrode line 53SR at the connection bending portion 53Qb on both sides in the second electrode direction D2. Alternatively, the sensing electrode line 53SR may be connected to another adjacent sensing electrode line 53SR at the connection bent portion 53Qb only on one side in the second electrode direction D2. Furthermore, the sensing electrode 33SP may include a sensing electrode line 53SR that is not connected to another sensing electrode line 53SR, and the sensing electrode 33SP may not have a connection portion of the sensing electrode line 53SR. In other words, the sensing electrode line 53SR may not have the connection bent portion 53Qb.

  Similarly, in one drive electrode 31DP, the drive electrode line 51DR may be connected to the other adjacent drive electrode line 51DR at the connection bent portion 51Qb on at least one side in the first electrode direction D1. The drive electrode 31DP may include a drive electrode line 51DR that is not connected to the other drive electrode line 51DR, or the drive electrode 31DP may not have a connection portion of the drive electrode line 51DR.

  If the two separated bent portions 53Qa facing each other with the sensing electrode lines 53SR adjacent to each other are separated with a gap, only one separated bent portion 53Qa is curved or bent as described above. The other separated bent portion 53Qa has a dot shape and may have the same shape as the connection bent portion 53Qb.

  Only on one side of the second electrode direction D2 with respect to the sensing electrode line 53SR, the position of the virtual intersection 53KP in the second electrode direction D2 is irregular with respect to the order of the arrangement of the virtual intersections 53KP between the plurality of virtual intersections 53KP It may have changed. That is, the sensing displacement electrode lines 45TR and 46TR may have a shape in which only one of the first virtual bent portion and the second virtual bent portion in the sensing reference electrode line 40KR is irregularly displaced. Similarly, on only one side of the first electrode direction D1 with respect to the drive electrode line 51DR, the position of the virtual intersection point 51KP in the first electrode direction D1 is not relative to the order of arrangement of the virtual intersection points 51KP between the plurality of virtual intersection points 51KP. It may be changed to a rule.

In the above embodiment, each pattern of the sensing electrode line 53SR and the drive electrode line 51DR is created on the basis of the pattern of the reference electrode lines 40KR and 41KR that are rhombus arranged patterns, but the reference electrode lines 40KR and 41KR The pattern may be a pattern different from the above embodiment. For example, the pattern of the reference electrode lines 40KR and 41KR may be a rectangular lattice pattern. Further, the relationship between the reference cycle KWs of the sensing reference electrode line 40KR and the reference interval KPd of the drive reference electrode line 41KR, and the relationship between the reference cycle KWd of the drive reference electrode line 41KR and the reference interval KPs of the sensing reference electrode line 40KR are: It may be different from the above embodiment.
Furthermore, if it is each pattern of the sensing electrode line and drive electrode line which have the shape characteristic shown to the said embodiment, the preparation method will not be limited.

  The pattern described in the above embodiment may be only one of the pattern configured from the plurality of sensing electrode lines 53SR and the pattern configured from the plurality of drive electrode lines 51DR. Even with such a configuration, compared to the configuration in which the phases of the parallel electrode lines are aligned in both the pattern configured by the plurality of sensing electrode lines and the pattern configured by the plurality of drive electrode lines, An effect of suppressing the pattern from being visually recognized can be obtained. In addition, each of the sensing electrode 33SP and the drive electrode 31DP may include an electrode wire having a shape different from the shape of the above embodiment, in addition to the electrode wire having the shape of the above embodiment. In addition, each of the sensing electrode line 53SR and the drive electrode line 51DR is arranged in a region where it is desired to suppress at least the strip-like pattern from being visually recognized, for example, in a central region viewed from the operation surface 20S. What is necessary is just to have the shape of embodiment. In addition, the pattern composed of the plurality of sensing electrode lines 53SR may be a pattern in which a pattern of a partial region included in the pattern is repeated along the first electrode direction D1 or the second electrode direction D2. Similarly, the pattern composed of the plurality of drive electrode lines 51DR may be a pattern in which a pattern of a partial region included in this pattern is repeated along the first electrode direction D1 or the second electrode direction D2. In this case, the partial region, that is, the portion included in the repetitive unit region is the first electrode line or the second electrode line.

  When the sensing electrode line and the drive electrode line are overlapped, the first electrode direction D1 that is the direction in which the sensing electrode line extends and the second electrode direction D2 that is the direction in which the drive electrode line extends may not be orthogonal to each other. These directions only need to intersect. That is, the first direction, which is the direction in which one electrode line extends, and the second direction, which is the direction in which the other electrode line extends, do not have to be orthogonal. In the configuration in which the first direction and the second direction are orthogonal to each other, an electrode line pattern in which the sensing electrode line and the drive electrode line are superimposed can be easily obtained, and when the conductive film 21 is manufactured, the sensing electrode line And the drive electrode line can be easily aligned.

  Further, the direction in which the sensing electrode lines extend and the direction in which the sensing electrode lines are arranged do not have to be orthogonal to each other, and these directions only need to intersect. Similarly, the direction in which the drive electrode lines extend and the direction in which the drive electrode lines are arranged do not have to be orthogonal to each other, and these directions only need to intersect. That is, the first direction, which is the direction in which one electrode line extends, and the first intersecting direction, in which the one electrode line is arranged, need only intersect with each other, and the first direction in which the other electrode line extends. The two directions and the second intersecting direction, which is the direction in which the other electrode lines are arranged, only need to intersect each other.

  In the above embodiment, the first direction and the second intersecting direction are the same direction, and the second direction and the first intersecting direction are the same direction, but all of these directions are different from each other. There may be.

  As shown in FIG. 17, the transparent substrate 31 and the transparent adhesive layer 32 may be omitted from the conductive film 21 constituting the touch panel 20. In such a configuration, the back surface facing the display panel 10 is set as the drive electrode surface 31S in the surface of the transparent dielectric substrate 33, and the drive electrode 31DP is located on the drive electrode surface 31S. And the surface which is a surface on the opposite side to the back surface in the transparent dielectric substrate 33 is the sensing electrode surface 33S, and sensing electrode 33SP is located in the sensing electrode surface 33S. In such a configuration, the drive electrode 31DP is formed, for example, by patterning one thin film formed on one surface of the transparent dielectric substrate 33 by etching, and the sensing electrode 33SP is, for example, a transparent dielectric One thin film formed on the other surface of the body substrate 33 is formed by patterning by etching.

  Note that, in the configuration in which the sensing electrode 33SP and the drive electrode 31DP are formed on different base materials as in the above embodiments, the configuration is such that electrode wires are formed on both surfaces of one base material. Thus, it is easy to form an electrode wire.

  As shown in FIG. 18, 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 in order from the components close to the display panel 10. The cover layer 22 may be located.

  In such a configuration, for example, the drive electrode 31DP is formed on one surface serving as the drive electrode surface 31S of the transparent substrate 31, and the sensing electrode 33SP is formed on one surface serving as the sensing electrode surface 33S of the transparent dielectric substrate 33. Is done. Then, the surface of the transparent substrate 31 opposite to the drive electrode surface 31S and the surface of the transparent dielectric substrate 33 opposite to the sensing electrode surface 33S are bonded by the transparent adhesive layer 32. In this case, the transparent substrate 31, the transparent adhesive layer 32, and the transparent dielectric substrate 33 constitute a transparent dielectric layer, and the drive electrode surface 31S of the transparent substrate 31 is one of the first surface and the second surface. The sensing electrode surface 33S of the transparent dielectric substrate 33 is the other of the first surface and the second surface.

  The display panel 10 and the touch panel 20 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, in the in-cell type, in the conductive film 21, the plurality of drive electrodes 31 DP are positioned on the TFT layer 13, while the plurality of sensing electrodes 33 SP are positioned between the color filter substrate 16 and the upper polarizing plate 17. It can be set as this structure. Alternatively, an on-cell configuration in which the conductive film 21 is located between the color filter substrate 16 and the upper polarizing plate 17 may be used. In such a configuration, the layer sandwiched between the drive electrode 31DP and the sensing electrode 33SP constitutes a transparent dielectric layer.

  D1 ... first electrode direction, D2 ... second electrode direction, Gp ... separation distance, KPs, KPd ... reference interval, KWs, KWd ... reference period, Kαs, Kαd ... reference angle, ND ... capacitance detector, Ss, Sd ... Displacement region, 10 ... display panel, 11 ... lower polarizing plate, 12 ... thin film transistor substrate, 13 ... TFT layer, 14 ... liquid crystal layer, 15 ... color filter layer, 15P ... pixel, 16 ... color filter substrate, 17 ... upper polarization Plate 20: Touch panel 21 ... Conductive film 22 ... Cover layer 23 ... Transparent adhesive layer 31 ... Transparent substrate 31S ... Drive electrode surface 31DP ... Drive electrode 33 ... Transparent dielectric substrate 33S ... Sensing electrode Surface, 33SP ... sensing electrode, 34 ... selection circuit, 35 ... detection circuit, 36 ... control unit, 40KR ... sensing reference electrode wire, 40E ... reference short wire portion, 40Q Reference bending portion, 41KR ... Drive reference electrode wire, 41E ... Reference short wire portion, 41Q ... Reference bending portion, 45TR, 46TR ... Sensing displacement electrode wire, 45Q, 46Q ... Displacement bending portion, 51DR ... Drive electrode wire, 51E ... Short wire 51Q ... Bent part, 51Qa ... Separate bent part, 51Qb ... Connected bent part, 51KP ... Virtual intersection, 53SR ... Sensing electrode wire, 53E ... Short line part, 53Q ... Bent part, 53Qa ... Separate bent part, 53Qb ... Connected bent Part, 53KP ... virtual intersection, 100 ... display device.

Claims (9)

A transparent dielectric layer having a first surface and a second surface opposite to the first surface;
A plurality of first electrodes extending along a first direction on the first surface and arranged along a first intersecting direction intersecting the first direction;
A plurality of second electrodes extending along a second direction intersecting the first direction on the second surface and arranged along a second intersecting direction intersecting the second direction;
The first electrode includes a plurality of first electrode lines having a bent line shape extending in the first direction,
The first electrode line includes a plurality of bent portions and a plurality of short line portions having a linear shape connecting the bent portions adjacent to each other along the first electrode line, and the short line portions with respect to the first direction The inclination of the plurality of short line portions changes irregularly with respect to the order in which the short line portions are arranged,
The plurality of bent portions include spaced-apart bent portions, and the intersections of the extended lines of the two short line portions connected to both ends of the separated bent portions are virtual intersections,
In the two first electrode lines adjacent to each other along the first intersecting direction, a gap between the separated bent portion of one of the first electrode lines and the separated bent portion of the other first electrode line is a gap. The conductive film is opposed to each other, and the positions of the virtual intersections with respect to each of the separated bent portions are the same. The plurality of bent portions include a connection bent portion,
In the two first electrode lines that are adjacent to each other along the first intersecting direction and are included in the common first electrode, the connection bent portion of one of the first electrode lines and the other of the first electrode lines The conductive film according to claim 1, wherein the conductive film is connected to the connection bent portion of the first electrode line. The spacing bend includes an arc bend having an arc shape,
The conductive portion according to claim 1, wherein the short line portion connected to the arc-shaped bent portion extends from an end of an arc formed by the arc-shaped bent portion so as to follow a tangent of the arc-shaped bent portion at the end. Sex film. The spacing bend includes a fold line bend,
The fold line bent portion extends from one end of the end portion to the other so as to connect a plurality of points located between the end portions of the two short line portions sandwiching the fold line bent portion. The electroconductive film as described in any one of these. A virtual electrode line having a plurality of virtual bent portions and having a bent line shape that repeats bending at a predetermined period in the first direction is a first reference electrode line, and is within the period of the first reference electrode line. The position in the first direction is a phase, and the plurality of first reference electrode lines are crossed by the first reference electrode lines adjacent to each other along the first intersecting direction. The phase of the portion aligned in the direction is reversed, and the virtual bent portion of one of the first reference electrode lines and the virtual bent portion of the other first reference electrode line are connected to each other,
The said 1st electrode line is comprised so that the said virtual intersection with respect to the said 1st electrode line may be arrange | positioned in the position displaced with respect to the said virtual bending part of the said 1st reference electrode line. The electroconductive film as described in any one. The length along the first direction between the virtual bent portions adjacent on one side of the first crossing direction in the first reference electrode line is a reference period, and the arrangement interval of the plurality of first reference electrode lines Is the reference interval,
A rectangular region centered on the virtual bending portion is a displacement region,
The length of the displacement region along the first direction is not less than 0.05 times and not more than 0.45 times the reference period,
The length of the displacement region along the first intersecting direction is 0.05 times or more and 0.45 times or less of the reference interval,
The conductive film according to claim 5, wherein the first electrode lines are configured such that each of the plurality of virtual intersections is located in each of the different displacement regions. The second electrode includes a plurality of second electrode lines having a bent line shape extending in the second direction,
The second electrode line includes a plurality of bent portions and a plurality of short line portions having a linear shape connecting the bent portions adjacent to each other along the second electrode line, and the short line portions with respect to the second direction The inclination of the plurality of short line portions changes irregularly with respect to the order in which the short line portions are arranged,
The plurality of bent portions of the second electrode line include a separated bent portion, and an intersection of extension lines of the two short line portions connected to both ends of the separated bent portion is a virtual intersection, In the two second electrode lines that are adjacent to each other along the crossing direction, a gap is formed between the separated bent portion of one of the second electrode lines and the separated bent portion of the other second electrode line. Facing each other, the positions of the virtual intersections with respect to each of these spaced-apart bends match
A virtual electrode line having a plurality of virtual bent portions and having a bent line shape that repeats bending at a predetermined period in the second direction is a second reference electrode line, and is within the period of the second reference electrode line The position in the second direction is a phase, and the plurality of second reference electrode lines are crossed by the two second reference electrode lines adjacent to each other along the second intersecting direction. The phase of the portions aligned in the direction is reversed, and the virtual bent portion of one of the second reference electrode lines and the virtual bent portion of the other second reference electrode line are connected to each other,
The second electrode line is configured so that the virtual intersection with respect to the second electrode line is disposed at a position displaced with respect to the virtual bent portion of the second reference electrode line,
An arrangement interval of the plurality of first reference electrode lines is a first reference interval, and a length along the first direction between virtual bent portions adjacent to each other on one side of the first intersecting direction in the first reference electrode line. Is the first reference period,
An arrangement interval of the plurality of second reference electrode lines is a second reference interval, and a length along the second direction between virtual bent portions adjacent on one side of the second crossing direction on the second reference electrode line. Is the second reference period,
7. The conductive device according to claim 5, wherein the first reference period is twice as long as the second reference interval, and the second reference period is twice as long as the first reference interval. Sex film. The conductive film according to any one of claims 1 to 7,
A cover layer covering the conductive film;
A peripheral circuit that measures a capacitance between the first electrode and the second electrode. A display panel having a plurality of pixels arranged in a grid and displaying information;
A touch panel that transmits the information displayed on the display panel;
A control unit for controlling the drive of the touch panel,
The said touch panel is a touch panel of Claim 8. A display apparatus.

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