JP2016062526A - Touch-sensor electrode, touch panel, and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a touch-sensor electrode configured to prevent moire, a touch panel, and a display device.SOLUTION: A touch-sensor electrode includes a transparent dielectric substrate 30, a plurality of drive electrodes 31DP, and a plurality of sensing electrodes 33SP. An electrode wire group, which is at least one of a plurality of drive electrode wires 31L located on a drive electrode surface and a plurality of sensing electrode wires 33L located on a sensing electrode surface 33S, includes a plurality of electrode wires constituting the electrode wire group, each having a main wire section and an irregular-shape section 21A. The main wire section has a shape which forms a skelton of an electrode wire including the main wire section. The irregular-shape section 21A has a shape different from the main wire section. A plurality of irregular-shape sections 21A are distributed in a two-dimensional manner in a plan view which faces the sensing electrode surface 33S, and are arranged irregularly along at least one of a first direction D1 constituting the sensing electrode surface 33S and a second direction D2 orthogonal to the first direction D1.SELECTED DRAWING: Figure 2

Description

  The present invention provides a touch sensor electrode including a plurality of first electrodes arranged along the first direction and a plurality of second electrodes arranged along the second direction and three-dimensionally intersecting the first electrode, a touch panel, And a display device.

  The touch panel includes a touch sensor electrode as a configuration for detecting the position of a finger or the like with respect to the touch panel. The touch sensor electrodes include a plurality of first electrodes arranged along a first direction, a plurality of second electrodes arranged along a second direction intersecting the first direction, a plurality of first electrodes, and a plurality of second electrodes. And a transparent dielectric substrate positioned between the electrodes. The drive electrode and the sensing electrode are configured by, for example, a set of electrode lines having a large number of linear shapes arranged at intervals from each other. The plurality of first electrodes and the plurality of second electrodes intersect three-dimensionally in plan view facing the transparent dielectric substrate. In the touch panel, the capacitance at the intersection of the first electrode and the second electrode is measured, and the position of the finger with respect to the touch panel is specified based on the measured change in capacitance (for example, see Patent Document 1). .

JP 2010-39537 A

Incidentally, a display device including a touch panel includes a display panel that overlaps the touch panel, and the display panel includes a black matrix having a lattice shape for partitioning a plurality of pixels. Therefore, in the display device, moire may occur due to the correlation between the periodic pattern formed by the first electrode and the second electrode in the touch sensor electrode and the period of the lattice shape of the black matrix. The moire generated in the display device is required to suppress the moire in the display device in order to make it difficult to visually recognize information such as characters and images displayed on the display panel.
An object of the present invention is to provide an electrode for a touch sensor, a touch panel, and a display device that can suppress moire.

  An electrode for a touch sensor for solving the above-described problem includes a transparent dielectric substrate having a first surface and a second surface that is a surface opposite to the first surface, and a plurality of electrodes positioned on the first surface. 1st electrode comprised from an electrode line, Comprising: The said 1st electrode arranged at intervals along the direction parallel to the said 1st surface, and comprised from the several electrode line located in the said 2nd surface A plurality of second electrodes arranged at intervals along a direction parallel to the second surface. The electrode lines that are at least one of the plurality of electrode lines located on the first surface and the plurality of electrode lines located on the second surface are a plurality of the electrode lines constituting the electrode line group. Each of which has a main line part and a deformed part, the main line part has a shape to be a skeleton of the electrode wire including the main line part, and the deformed part has a shape different from the main line part. Yes. The plurality of deformed portions are two-dimensionally dispersed in a plan view facing the second surface, and are orthogonal to the first direction, which is one direction constituting the second surface, and the first direction. Arranged irregularly along at least one of the second directions.

  A touch panel for solving the above problems includes a plurality of first electrodes, a plurality of second electrodes, and a transparent dielectric substrate positioned between the plurality of first electrodes and the plurality of second electrodes. A touch sensor electrode; a cover layer covering the touch sensor electrode; and a peripheral circuit for measuring a capacitance between the first electrode line and the second electrode line. The touch sensor electrode is the touch sensor electrode.

  A display device for solving the above problems includes a display panel that displays information, a touch panel that transmits the information displayed on the display panel, and a drive circuit that drives the touch panel. The touch panel is the touch panel.

  According to the above aspect, the touch sensor electrode has a plurality of deformed portions dispersed two-dimensionally, and the plurality of deformed portions are arranged irregularly along at least one direction. Therefore, in a plan view facing the first surface, the periodicity of the structure formed by the plurality of first electrodes and the plurality of second electrodes included in the touch sensor electrode is disturbed along at least one direction. The Therefore, when the touch sensor electrode is superimposed on the display panel, moire due to the correlation between the periodicity of the touch sensor electrode and the periodicity of the pixels in the display panel is suppressed.

In another aspect of the touch sensor electrode, the plurality of electrode lines located on the first surface and the plurality of electrode lines located on the second surface have a quadrangular shape in the plan view. It is preferable that a lattice pattern that is a repetitive lattice is formed, and the plurality of unit lattices are arranged along the first direction and the second direction.
According to another aspect of the touch sensor electrode, the periodic structure formed by the plurality of unit lattices is disturbed by the deformed portion, thereby suppressing moire.

  In another aspect of the touch sensor electrode, at least some of the plurality of deformed portions are irregularly arranged along the first direction and arranged at a predetermined cycle along the second direction. Also good.

  According to another aspect of the touch sensor electrode, moire caused by the period of the unit cells arranged along the first direction is suppressed. On the other hand, since the deformed portions are arranged in a predetermined cycle in the second direction, the load required for designing the deformed portions can be suppressed.

  In another aspect of the touch sensor electrode, the plurality of deformed portions arranged along the second direction constitute one deformed portion group, and the plurality of deformed portions are arranged along the first direction. The plurality of deformed portions included in each of the plurality of deformed portion groups are arranged in a predetermined cycle along the second direction. In the plan view, the plurality of deformed portion groups include a first deformed portion group in which the plurality of deformed portions included in the deformed portion group are arranged along the second direction in a first period, and the deformed portion group. The plurality of deformed parts included may include a second deformed part group arranged along the second direction at a second period different from the first period.

  According to another aspect of the touch sensor electrode, the plurality of deformed portion groups include the first deformed portion group and the second deformed portion group having different periods in the second direction. The irregularity of the deformed portion in the first direction can be increased as compared with the configuration including only the portion group. Therefore, moire is further suppressed.

  In another aspect of the touch sensor electrode, the first deformed portion group and the second deformed portion group are alternately repeated along the first direction, and are adjacent to each other in the first direction. In the deformed portion group, the plurality of deformed portions constituting the first deformed portion group and the plurality of deformed portions constituting the second deformed portion group are line segments constituting the lattice pattern, One line segment extending along the second direction may be sandwiched in the first direction.

  According to the other aspect of the electrode for a touch sensor, two deformed portion groups having different shapes arranged in a row sandwich one line segment extending in the second direction. Therefore, the periodicity of the lattice pattern is likely to be visually disturbed between two deformed portion groups having different shapes of the deformed portions.

  In another aspect of the touch sensor electrode, each of the plurality of unit lattices includes a first line segment and a second line segment arranged along the first direction, and the plurality of deformed portions include the first line segment and the second line segment. The deformed part located in one line segment and the deformed part located in the second line segment may be included.

  According to another aspect of the touch sensor electrode, since there are two positions of the deformed portion in the first direction with respect to one unit lattice, there is one position of the deformed portion with respect to one unit lattice. Compared with the structure which is, the irregularity in a some deformed part increases in a 1st direction. Therefore, moire is further suppressed.

In another aspect of the touch sensor electrode, the plurality of deformed portions include a first deformed portion having a first shape and a second deformed portion having a second shape different from the first shape. May be included.
According to the other aspect of the electrode for a touch sensor, the irregularity due to the plurality of deformed portions is further increased as compared with the configuration in which the shape of the deformed portion is one type.

  In another aspect of the touch sensor electrode, the first direction is a direction intersecting with the extending direction of the first electrode, and the second direction is a direction intersecting with the extending direction of the second electrode. It is preferable.

  According to another aspect of the touch sensor electrode, the unit cells constituting the lattice pattern are arranged in a state having a predetermined inclination with respect to the direction in which the first electrode and the second electrode extend. Therefore, the periodicity in the electrode structure and the lattice pattern are compared with the configuration in which the extending direction of the first electrode is parallel to the first direction and the extending direction of the second electrode is parallel to the second direction. Moire due to the correlation with the periodicity in the structure is difficult to form.

  In another aspect of the touch sensor electrode, each of the plurality of electrode lines located on the first surface has a broken line shape extending along the first direction and having a plurality of bending points, Each of the plurality of electrode lines located on the second surface may have a polygonal line shape extending along the second direction and having a plurality of bending points.

  According to another aspect of the touch sensor electrode, since the lattice pattern is formed of electrode lines having a bent line shape having a plurality of bending points, the lattice pattern formed of electrode lines having a straight line shape and In comparison, the periodicity in the lattice pattern is likely to be disturbed. Therefore, it is difficult to form moire based on the periodicity in the structure of the lattice pattern.

  According to the present invention, moire can be suppressed.

It is a block diagram which shows typically the structure of the display apparatus in 1st Embodiment which actualized this invention with the cross-section of the electrode for touch sensors with which a touch panel is provided. It is a top view which shows the planar structure of the electrode for touch sensors in 1st Embodiment. It is a top view which shows the planar structure of the electrode for touch sensors in a modification. It is a top view which shows the planar structure of the electrode for touch sensors in a modification. It is a top view which shows the planar structure of the display apparatus in 2nd Embodiment which actualized this invention, Comprising: It is a figure cut out and shown in order that a part of mutually different component overlaps. It is sectional drawing which shows the cross-section of the display apparatus in 2nd Embodiment. It is a block diagram for demonstrating the electrical structure of the touchscreen in 2nd Embodiment. It is the elements on larger scale which expand and show a part of plane structure of the lattice pattern in a 2nd embodiment. It is explanatory drawing for demonstrating the design method of the electrode for touch sensors in 2nd Embodiment. It is the elements on larger scale which expand and show a part of plane structure of the lattice pattern in a modification. It is the elements on larger scale which expand and show a part of plane structure of the lattice pattern in a modification. It is an enlarged plan view which expands and shows the planar structure of the wide part in a modification. It is an enlarged plan view which expands and shows the planar structure of the deformed part in a modification. It is an enlarged plan view which expands and shows the planar structure of the deformed part in a modification. It is an enlarged plan view which expands and shows the planar structure of the deformed part in a modification. It is a fragmentary top view which shows a part of plane structure of the lattice pattern in a modification. It is a fragmentary top view which shows a part of plane structure of the lattice pattern in a modification. It is a fragmentary top view which shows a part of plane structure of the lattice pattern in a modification. It is a fragmentary top view which shows a part of plane structure of the lattice pattern in a modification. It is a fragmentary top view which shows a part of plane structure of the lattice pattern in a modification. It is a fragmentary top view which shows a part of plane structure of the lattice pattern in a modification. It is sectional drawing which shows the cross-section of the display apparatus in a modification. It is sectional drawing which shows the cross-section of the display apparatus in a modification.

[First Embodiment]
The touch sensor electrode, the touch panel, and the display device according to the first embodiment will be described with reference to FIGS. 1 and 2. In FIG. 1, for the convenience of explaining the configuration of the touch sensor electrode, a schematic structure of the display device is shown together with a cross-sectional structure of the touch sensor electrode. In FIG. 2, for convenience of explaining the positions of the deformed portions in the touch sensor electrode, some of the plurality of electrodes included in the touch sensor electrode are indicated by broken lines.

  As shown in FIG. 1, the display device includes a display panel 10 and a touch panel 20, and the touch panel 20 overlaps the display panel 10. The display panel 10 is, for example, a liquid crystal display panel or an organic EL display panel, and displays predetermined information including characters and images. The display panel 10 includes a plurality of pixels regularly arranged along a predetermined direction, and displays information using the pixels.

  The touch panel 20 includes a touch sensor electrode 21 for detecting, for example, a position on the touch panel 20 that is in contact with the finger of the user of the display device. The touch sensor electrode 21 includes a transparent dielectric substrate 30, a plurality of drive electrodes 31DP, and a plurality of sensing electrodes 33SP.

  The transparent dielectric substrate 30 includes a drive electrode surface 31S and a sensing electrode surface 33S which is a surface opposite to the drive electrode surface 31S. The transparent dielectric substrate 30 is composed of, for example, a transparent resin substrate or a glass substrate, and may have a single layer structure including a single substrate or a multilayer structure including a plurality of substrates. The transparent dielectric substrate 30 is an example of a transparent dielectric substrate. The drive electrode surface 31S is an example of a first surface, and the sensing electrode surface 33S is an example of a second surface.

  The drive electrode 31DP is composed of a plurality of electrode lines, and the plurality of drive electrodes 31DP are arranged at intervals along a direction parallel to the drive electrode surface 31S. The plurality of drive electrodes 31DP are positioned on the drive electrode surface 31S and have a band shape extending along one direction. The drive electrode 31DP is an example of a first electrode.

  As with the drive electrode 31DP, the sensing electrode 33SP is composed of a plurality of electrode lines, and the plurality of sensing electrodes 33SP are arranged at intervals along a direction parallel to the sensing electrode surface 33S. The plurality of sensing electrodes 33SP are located on the sensing electrode surface 33S, and have a band shape extending in one direction and perpendicular to the direction in which the drive electrode 31DP extends. The sensing electrode 33SP is an example of a second electrode.

  As shown in FIG. 2, each drive electrode 31DP three-dimensionally intersects with each of the plurality of sensing electrodes 33SP in a plan view facing the sensing electrode surface 33S. In the touch sensor electrode 21, the capacitance between one drive electrode 31DP and one sensing electrode 33SP is used to detect the position of a finger or the like.

  The drive electrode 31DP includes a plurality of drive electrode lines 31L, and each of the plurality of drive electrode lines 31L has, for example, a linear shape extending along the first direction D1 that is one direction constituting the sensing electrode surface 33S. The plurality of drive electrode lines 31L are arranged along a second direction D2 orthogonal to the first direction D1. The plurality of drive electrode lines 31L in one drive electrode 31DP are connected to one drive pad 31P at one end in the first direction D1.

  A part of the plurality of drive electrode lines 31L includes a drive main line portion 31MP and a deformed portion 21A. Among these, the drive main line portion 31MP has a shape that is a skeleton of the drive electrode line 31L including the drive main line portion 31MP, while the deformed portion 21A has a shape different from that of the drive main line portion 31MP.

  The drive main line portion 31MP has, for example, a linear shape. On the other hand, the deformed portion 21A may be a portion having a larger line width than the drive main line portion 31MP or a portion having a smaller line width than the drive main line portion 31MP in the drive electrode line 31L including the deformed portion 21A. . Alternatively, the deformed portion 21A may be a portion bent in the direction of the line width from the drive main line portion 31MP.

  The sensing electrode 33SP includes a plurality of sensing electrode lines 33L. Each of the plurality of sensing electrode lines 33L has, for example, a linear shape extending along the second direction D2, and the plurality of sensing electrode lines 33L includes the first sensing electrode lines 33L. It is lined up along the direction D1. A plurality of sensing electrode lines 33L in one sensing electrode 33SP is connected to one sensing pad 33P at one end in the second direction D2.

  A part of the plurality of sensing electrode wires 33L includes a sensing main line portion 33MP and a deformed portion 21A. Among these, the sensing main line portion 33MP has a shape that becomes a skeleton of the sensing electrode line 33L including the sensing main line portion 33MP, while the deformed portion 21A has a shape different from that of the sensing main line portion 33MP.

  Of the plurality of drive electrode lines 31L positioned on the drive electrode surface 31S, the plurality of drive electrode lines 31L including the deformed portion 21A and the plurality of sensing electrode lines 33L positioned on the sensing electrode surface 33S include the deformed portion 21A. The plurality of sensing electrode wires 33L constitute an electrode wire group.

  The sensing main line portion 33MP has, for example, a linear shape. On the other hand, the deformed portion 21A may be a portion having a larger line width than the sensing main line portion 33MP in the sensing electrode line 33L included in the deformed portion 21A, similarly to the deformed portion 21A included in the drive electrode line 31L. A portion having a smaller line width than the main line portion 33MP may be used. Alternatively, the deformed portion 21A may be a portion bent in the line width direction from the sensing main line portion 33MP.

  In the plurality of deformed portions 21A provided in the touch sensor electrode 21, some of the deformed portions 21A are not included in the drive electrode line 31L, and the remaining deformed portions 21A are not included in the sensing electrode line 33L. Good. For example, all of the plurality of deformed portions 21A may be included in the drive electrode line 31L or may be included in the sensing electrode line 33L.

  In addition, each deformed portion 21A may be located in a region where one drive electrode 31DP and one sensing electrode 33SP are three-dimensionally overlapped in plan view facing the sensing electrode surface 33S. Alternatively, each deformed portion 21A may be located in a region where only the drive electrode 31DP is located in a plan view facing the sensing electrode surface 33S, or may be located in a region where only the sensing electrode 33SP is located.

  In a plan view facing the sensing electrode surface 33S, the plurality of deformed portions 21A are two-dimensionally dispersed, irregularly aligned along the first direction D1, and irregularly aligned along the second direction D2. . That is, in the plurality of deformed portions 21A, the distance between the deformed portions 21A in the first direction D1 is the first distance DA1, and the first distance DA1 changes irregularly along the first direction D1. Further, in the plurality of deformed portions 21A, the distance between the deformed portions 21A in the second direction D2 is the second distance DA2, and the second distance DA2 changes irregularly along the second direction D2.

  Therefore, in a plan view facing the sensing electrode surface 33S, the periodicity of the structure formed by the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP provided in the touch sensor electrode 21 is in the first direction D1 and the second direction. Disturbed along both direction D2. Therefore, when the touch sensor electrode 21 is superimposed on the display panel 10, moire due to the correlation between the periodicity of the touch sensor electrode 21 and the periodicity of the pixels in the display panel 10 is suppressed.

As described above, according to the first embodiment, the effects listed below can be obtained.
(1) The touch sensor electrode 21 has a plurality of deformed portions 21A dispersed two-dimensionally, and the plurality of deformed portions 21A are irregularly arranged along the first direction D1 and the second direction D2. It is out. Therefore, in a plan view facing the sensing electrode surface 33S, the periodicity of the structure formed by the plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP provided in the touch sensor electrode 21 is disturbed along two directions. Is done. Therefore, when the touch sensor electrode 21 is superimposed on the display panel 10, moire due to the correlation between the periodicity of the structure of the touch sensor electrode 21 and the periodicity of the pixels of the display panel 10 is suppressed.

[Modification of First Embodiment]
The first embodiment can also be implemented with appropriate modifications as follows.
The plurality of deformed portions 21A may not be irregularly arranged along both the first direction D1 and the second direction D2, and as shown in FIG. While being irregularly arranged along the direction D1, it may be regularly arranging along the second direction D2. That is, the first distance DA1 described above may vary irregularly along the first direction D1, while the second distance DA2 may be constant along the second direction D2. Even in such a configuration, since the plurality of deformed portions 21A are irregularly arranged along the first direction D1, the effect according to the above-described (1) can be obtained in the first direction D1. .

  The plurality of deformed portions 21A may not be irregularly arranged along both the first direction D1 and the second direction D2, and the plurality of deformed portions 21A are regularly arranged along the first direction D1. However, they may be regularly arranged along the second direction D2. That is, the first distance DA1 may be constant along the first direction D1, while the second distance DA2 may vary irregularly along the second direction D2. Even in such a configuration, since the plurality of deformed portions 21A are irregularly arranged along the second direction D2, it is possible to obtain the effect according to the above-described (1) in the second direction D2. .

  The first direction D1 in which the plurality of deformed portions 21A are arranged and the direction in which the drive electrode line 31L extends may not be parallel to each other, the second direction D2 orthogonal to the first direction D1, and the sensing electrode line 33L The directions in which the two extend may not be parallel to each other. That is, as shown in FIG. 4, the first direction D1, which is one direction constituting the sensing electrode surface 33S, and the first direction D1 in which the plurality of deformed portions 21A are arranged is a predetermined angle with the drive electrode line 31L. The crossing direction may be used. The second direction D2 orthogonal to the first direction D1 may be a direction that intersects the sensing electrode line 33L at a predetermined angle.

  In such a configuration, the direction in which the drive electrode 31DP extends and the first direction D1 intersect at a predetermined angle, and the direction in which the sensing electrode 33SP extends and the second direction D2 intersect at a predetermined angle. . Even in such a configuration, the plurality of deformed portions 21A are irregularly arranged along the first direction D1, which is one direction constituting the sensing electrode surface 33S, and the second direction orthogonal to the first direction D1. As mentioned above, the effect according to (1) mentioned above can be acquired.

  In the configuration in which the first direction D1 intersects the direction in which the drive electrode line 31L extends, and the second direction D2 intersects the direction in which the sensing electrode line 33L extends, the plurality of deformed portions 21A have the first direction D1. While being arranged irregularly along, the arrangement may be arranged regularly along the second direction D2. Alternatively, the plurality of deformed portions 21A may be arranged in a regular manner along the first direction D1 while being irregularly arranged in the second direction D2. Even in such a configuration, in the direction in which the plurality of irregularly shaped portions 21A are irregularly arranged, it is possible to obtain the effect according to the above (1).

  The drive electrode line 31L included in the drive electrode 31DP is not limited to a linear shape, but a bent line shape having one or more bending points or a curve having one or more bending points in the direction in which the drive electrode line 31L extends. You may have a shape. In such a configuration, the sensing electrode line 33L may have a linear shape as described above, or may have a bent line shape or a curved shape similar to the drive electrode line 31L. Alternatively, the sensing electrode line 33L may have the above-described broken line shape or curved shape, while the drive electrode line 31L may have a linear shape.

  A configuration in which all of the plurality of deformed portions 21A included in the touch sensor electrode 21 are positioned only on the drive electrode surface 31S or only on the sensing electrode surface 33S may be employed. Among these, in the configuration in which all of the plurality of deformed portions 21A are located only on the drive electrode surface 31S, all of the plurality of deformed portions 21A may be located only on the drive electrode line 31L, or a plurality of deformed portions. In addition to the portion 21A, at least one dummy portion located between the two drive electrode lines 31L may be included. Even with such a configuration, the plurality of deformed portions 21A can be irregularly arranged in at least one of the first direction D1 and the second direction D2.

  Here, since there are a plurality of kinds of shapes and sizes of the pixels included in the display panel 10, there are a plurality of kinds of shapes of the black matrix for partitioning the pixels. And the position of 21 A of deformed parts preferable when suppressing the moire mentioned above also differs for every black matrix. In this regard, according to the configuration in which the touch sensor electrode 21 includes a plurality of deformed portions 21A only on the drive electrode surface 31S, the same sensing electrode 33SP can be applied to the display panel 10 having a different black matrix. is there. Thereby, when manufacturing the electrode 21 for touch sensors with respect to multiple types of display panels 10, the cost concerning manufacture of the electrode 21 for touch sensors can be made low.

  In the configuration in which all of the plurality of deformed portions 21A are positioned only on the sensing electrode surface 33S, all of the plurality of deformed portions 21A may be only positioned on the sensing electrode line 33L, or the plurality of deformed portions. In addition to 21A, you may have at least 1 dummy part located between the two sensing electrode lines 33L. Even with such a configuration, it is possible to obtain the same effect as the configuration in which all of the plurality of deformed portions 21A are located only on the drive electrode surface 31S.

[Second Embodiment]
A touch sensor electrode, a touch panel, and a display device according to the second embodiment will be described with reference to FIGS. In the second embodiment, a more detailed configuration of the touch panel and the display device is shown compared to the first embodiment. Further, the second embodiment is mainly different from the first embodiment in the configuration of the electrode lines of each electrode. Therefore, in the following, the configuration of the display device, the electrical configuration of the touch panel, the configuration of the grid pattern formed by the drive electrode and the sensing electrode, and the design method of the grid pattern will be described with particular explanation of these differences. .

[Plane structure of display device]
The configuration of the display device will be described with reference to FIG. In FIG. 5, the black matrix, the drive electrode, and the sensing electrode are exaggerated for the convenience of describing the configuration of the black matrix, the drive electrode, and the sensing electrode included in the display device. Moreover, the drive electrode wire which comprises a drive electrode, and the sensing electrode wire which comprises a sensing electrode are typically shown.

  As shown in FIG. 5, the display device is, 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, and a drive circuit for driving the touch panel 20. It has.

  A display surface 10S formed in a rectangular shape is partitioned on the surface of the display panel 10, and information such as an image based on image data from the outside is displayed on the display surface 10S. Note that 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.

  The display panel 10 includes a color filter layer 15, and a black matrix 15a in the color filter layer 15 includes a first electrode direction DE1 that is one direction and a second electrode direction DE2 that is a direction orthogonal to the first electrode direction DE1. And a lattice shape composed of a plurality of unit lattices having a rectangular shape arranged along the line. One pixel 15P includes three unit cells that are continuous along the second electrode direction DE2, and each of the plurality of pixels 15P is arranged along the first electrode direction DE1 and the second electrode direction DE2. Yes.

  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, each of the plurality of red coloring layers 15R, the plurality of green coloring layers 15G, and the plurality of blue coloring layers 15B includes the red coloring layer 15R, green coloring along the second electrode direction DE2. The layer 15G and the blue colored layer 15B are repeatedly arranged in this order.

  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 second electrode direction DE2. The colored layers 15G and the blue colored layer 15B are arranged along the second electrode direction DE2 while maintaining the order of arrangement.

  The width along the first electrode direction DE1 in the pixel 15P is the first pixel width WP1, the width along the second electrode direction DE2 in the pixel 15P is the second pixel width WP2, and each of the colored layers 15R, 15G, and 15B. The width along the second electrode direction DE2 in FIG. 3 is the third pixel width WP3. Each of the first pixel width WP1, the second pixel width WP2, and the third pixel width WP3 is set to a value according to the resolution required for the display device.

  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.

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

  The transparent substrate 31 constituting the touch sensor electrode 21 is superposed on the entire display surface 10S formed on the display panel 10, and has a light transmission property that transmits information such as an image displayed on the display surface 10S. Yes. The transparent substrate 31 may be composed of a base material such as a transparent glass substrate or a transparent resin film, for example, and may be a single layer structure composed of one base material, or two or more base materials may be stacked. It may be a multilayer structure.

  The surface of the transparent substrate 31 opposite to the display panel 10 is set as a drive electrode surface 31S. In the drive electrode surface 31S of the transparent substrate 31, each of the plurality of drive electrodes 31DP has a band shape extending along the first electrode direction DE1, which is one direction, and is orthogonal to the first electrode direction DE1. They are arranged at intervals along the two-electrode direction DE2.

  Each drive electrode 31DP is a set of a plurality of drive electrode lines, and the plurality of drive electrode lines mutually connect a plurality of drive main lines extending in a direction intersecting the first electrode direction DE1 and a plurality of drive main lines. And a plurality of drive sub-wires for connecting to the. A metal film such as copper or aluminum is used as a material for forming each drive electrode 31DP. Alternatively, the formation material of each drive electrode 31DP includes a metal oxide film such as zinc oxide, and a composite containing metal oxide such as indium such as indium tin oxide and indium gallium zinc oxide, tin, gallium, and zinc. An oxide film is used. In addition, as a material for forming each drive electrode 31DP, a conductive film such as a silver nanowire, a conductive polymer film, and a graphene film is also used.

  Each of the plurality of drive electrodes 31DP is individually connected to the selection circuit via the drive pad 31P, and is selected by the selection circuit by receiving a drive signal output from the selection circuit.

  A plurality of drive electrodes 31DP and a portion of the drive electrode surface 31S where the drive 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 10S, and bonds the drive electrode surface 31S, the plurality of drive electrodes 31DP, and the transparent dielectric substrate 33 to each other. To do. For the transparent adhesive layer 32, for example, a polyether adhesive or an acrylic adhesive is used. A 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 back surface of the transparent dielectric substrate 33 is an example of the first surface.

  For example, the transparent dielectric substrate 33 may be formed of a base material such as a transparent resin film such as polyethylene terephthalate or a transparent glass substrate, and may have a single-layer structure including a single base material. A multilayer structure in which the above base materials are stacked may be used. The transparent dielectric substrate 33 has optical transparency that transmits information such as an image displayed on the display surface 10S, and a relative dielectric constant suitable for detecting capacitance between electrodes.

  The surface of the transparent dielectric substrate 33 opposite to the transparent adhesive layer 32 is set as a sensing electrode surface 33S. On the sensing electrode surface 33S of the transparent dielectric substrate 33, each of the plurality of sensing electrodes 33SP has a strip shape extending along the second electrode direction DE2 and is orthogonal to the second electrode direction DE2. They are lined up with a gap along the direction DE1. The sensing electrode surface 33S is an example of a second surface.

  Each sensing electrode 33SP is a set of a plurality of sensing electrode lines, and the plurality of sensing electrode lines are used for mutually connecting a plurality of sensing main lines extending in a direction orthogonal to the drive main line and a plurality of sensing main lines. A plurality of sensing sub-lines. A metal film such as copper or aluminum is used as a material for forming each sensing electrode 33SP. Alternatively, the formation material of each sensing electrode 33SP includes a metal oxide film such as zinc oxide, and a composite containing metal oxide such as indium such as indium tin oxide and indium gallium zinc oxide, tin, gallium, and zinc. An oxide film is used. In addition, as a forming material of each sensing electrode 33SP, a conductive film such as a silver nanowire, a conductive polymer film, and a graphene film is also used.

  Each of the plurality of sensing electrodes 33SP is individually connected to the detection circuit via the sensing pad 33P, and the current value is measured by the detection circuit.

  In the plan view facing the sensing electrode surface 33S, each of the plurality of drive electrodes 31DP crosses each of the plurality of sensing electrodes 33SP in a three-dimensional manner. Accordingly, the plurality of drive electrode lines provided for each of the plurality of drive electrodes 31DP and the plurality of sensing electrode lines provided for each of the plurality of sensing electrodes 33SP have a rectangular shape in plan view facing the sensing electrode surface 33S. A lattice pattern having a continuous lattice shape of unit lattices is formed.

  As described above, the extending direction of each of the plurality of drive electrode lines is inclined with respect to the first electrode direction DE1, and the extending direction of each of the plurality of sensing electrode lines is in the second electrode direction DE2. In contrast, it has an inclination. Therefore, the unit cell formed by the plurality of drive electrode lines and the plurality of sensing electrode lines is inclined with respect to the first electrode direction DE1 and the second electrode direction DE2.

  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 the transparent adhesive layer 23 described above.

[Cross-sectional structure of display device]
As shown in FIG. 6, the transparent substrate 31, the drive electrode 31DP, the transparent adhesive layer 32, the transparent dielectric substrate 33, and the sensing electrode 33SP are sequentially arranged from the components that are close to the display panel 10 among the components that constitute the touch panel 20. The transparent adhesive layer 23 and the cover layer 22 are located. Among these, the transparent dielectric substrate 33 is sandwiched between a plurality of drive electrodes 31DP and a plurality of sensing electrodes 33SP. The touch sensor electrode 21, the selection circuit described above, and the detection circuit described above constitute an example of a touch sensor.

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

  In addition, a plurality of components constituting the display panel 10 are arranged in the following order from the components far from the touch panel 20 among the components constituting the display panel 10. That is, the lower polarizing plate 11, the thin film transistor (hereinafter, TFT) substrate 12, the TFT layer 13, the liquid crystal layer 14, the color filter layer 15, the color filter substrate 16, and the upper polarizing plate 17 are arranged in order from the components far from the touch panel 20. positioned. Among these, in the TFT layer 13, pixel electrodes constituting subpixels are located in a matrix. The black matrix 15a in the color filter layer 15 defines a plurality of regions having a rectangular shape facing each of the sub-pixels, and white light is red, green, and blue in each region defined by the black matrix 15a. The above-described colored layer that changes to any one of the colors is located.

  In the configuration in which the transparent adhesive layer 23 is omitted, the surface of the cover layer 22 that faces the transparent dielectric substrate 33 is set as the sensing electrode surface 33S, and is formed on the sensing electrode surface 33S. A plurality of sensing electrodes 33SP may be formed by patterning a thin film.

  In manufacturing the touch panel 20, a method in which the touch sensor electrode 21 and the cover layer 22 are bonded together by the above-described transparent adhesive layer 23 may be employed, or as another example different from such a manufacturing method. The following manufacturing method may be employed. 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 is processed into a plurality of drive electrodes 31DP, and a second film is obtained. Then, the first film and the second film are attached to the transparent dielectric substrate 33 with a transparent adhesive layer so as to sandwich the transparent dielectric substrate 33.

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

  As shown in FIG. 7, the touch panel 20 includes a selection circuit 34, a detection circuit 35, and a control unit 36. The selection circuit 34 is connected to the plurality of drive electrodes 31DP, the detection circuit 35 is connected to the plurality of sensing electrodes 33SP, and the control unit 36 is connected to the selection circuit 34 and the detection circuit 35.

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

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

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

  The detection circuit 35 includes a signal acquisition unit 35a and a signal processing unit 35b. Based on the start timing signal output from the control unit 36, the signal acquisition unit 35a starts acquiring a current signal that is an analog signal generated in each sensing electrode 33SP. Then, the signal acquisition unit 35a scans the current signal acquisition source from the first sensing electrode 33SP1 to the nth sensing electrode 33SPn based on the scanning timing signal output from the control unit 36.

  The signal processing unit 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. The selection circuit 34 and the detection circuit 35 are examples of peripheral circuits.

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

[Configuration of lattice pattern]
The configuration of the lattice pattern will be described with reference to FIG. In FIG. 8, for convenience of describing the shape of the wide portion included in the lattice pattern and the position of the wide portion with respect to the lattice pattern, the electrode lines and the wide portion constituting the lattice pattern are exaggerated. In the following, an example will be described in which the extending direction of the electrode lines constituting the lattice pattern is parallel to the direction in which the wide portions are arranged.

  As shown in FIG. 8, in a plan view facing the sensing electrode surface 33S, the lattice pattern 21G includes a plurality of first electrode lines 21G1 extending along a first direction D1, which is one direction, and a first direction D1. And a plurality of second electrode lines 21G2 extending along the orthogonal second direction D2.

  The plurality of first electrode lines 21G1 are arranged at equal intervals along the second direction D2, and the plurality of second electrode lines 21G2 are arranged at equal intervals along the first direction D1. In a plan view facing the sensing electrode surface 33S, the plurality of first electrode lines 21G1 and the plurality of second electrode lines 21G2 have a rectangular shape, for example, a unit cell 21C having a square shape in the first direction D1 and the second direction. A continuous lattice shape is formed along each of the directions D2.

  The angle θ formed by the first direction D1 and the first electrode direction DE1 is, for example, 1 ° or more and 179 ° or less, and the angle θ is preferably 45 ° or more and 135 ° or less. The angle formed by the second direction D2 and the second electrode direction DE2 is also equal to the angle θ. Each of the first electrode lines 21G1 includes at least one of the drive main line, the drive sub line, the sensing main line, and the sensing sub line described above, and each of the second electrode lines 21G2 is also a drive It is composed of at least one of an electrode line, a drive sub line, a sensing main line, and a sensing sub line.

  Of the plurality of unit lattices 21C included in the lattice pattern 21G, each of the three or more unit lattices 21C includes one wide portion 21W. In one unit cell 21C, a portion having a linear shape with a predetermined line width is a main line portion 21M, and among electrode lines forming the unit cell 21C, a portion having a line width larger than that of the main line portion 21M is wide. Part 21W. The wide portion 21W has a circular shape, and the center of the wide portion 21W is located at the center of the line width in each first electrode line 21G1 and each second electrode line 21G2. The wide portion 21W is an example of a deformed portion. That is, the lattice pattern 21G includes a plurality of wide portions 21W in plan view facing the sensing electrode surface 33S. The line width of the main line portion 21M is, for example, not less than 0.1 μm and not more than 12 μm. Moreover, it is preferable that the total light transmittance of the touch panel 20 provided with the electrode 21 for touch sensors provided with the lattice pattern 21G is 80% or more.

  Among the plurality of wide portions 21W included in the lattice pattern 21G, the plurality of wide portions 21W arranged along the second direction D2 constitute one wide portion group 21WG. In the lattice pattern 21G, the plurality of wide portion groups 21WG include The unit cell 21C is continuous along the first direction D1. The wide portion group 21WG is an example of a deformed portion group.

  The wide portion group 21WG includes a first wide portion group 21WG1 and a second wide portion group 21WG2. Among these, in the 1st wide part group 21WG1, the several wide part 21W is located in a line with the 1st period P1 which is the period of the two unit cells 21C along the 2nd direction D2. On the other hand, in the second wide portion group 21WG2, a plurality of wide portions 21W are arranged in the second period P2 that is the period of the three unit lattices 21C along the second direction D2. As described above, the plurality of wide portions 21W are regularly arranged along the second direction D2 by being arranged in the first period P1 or in the second period P2 along the second direction D2. The first wide portion group 21WG1 is an example of a first variant portion group, and the second wide portion group 21WG2 is an example of a second variant portion group.

  On the other hand, in the plurality of wide portion groups 21WG, the first wide portion group 21WG1 and the second wide portion group 21WG2 are arranged irregularly along the first direction D1. In addition, for each first wide portion group 21WG1, one of the four types of first wide portion groups 21WG1 shifted by half the distance of the unit cell 21C along the second direction D2 is selected. Further, one of the six types of second wide portion groups 21WG2 shifted by half the distance of the unit cell 21C along the second direction D2 with respect to the second wide portion group 21WG2 is selected. Thereby, the multiple wide portions 21W are irregularly arranged along the first direction D1.

  In the lattice pattern 21G, the plurality of wide portions 21W are irregularly arranged with respect to one side in the direction in which the plurality of unit lattices 21C are arranged. Therefore, the periodicity in the arrangement of the plurality of unit lattices 21C is disturbed by the wide portions 21W. Is done. Therefore, moire due to the correlation between the periodicity of the lattice pattern 21G and the periodicity of the pixels 15P in the display panel 10 is suppressed.

  In the touch panel 20, for example, moire occurs along the first direction D <b> 1 in the first direction D <b> 1 and the second direction D <b> 2, but moire may not occur along the second direction D <b> 2. In this case, according to the lattice pattern 21G described above, moire due to the period of the unit lattices 21C arranged along the first direction D1 in the first direction D1 and the second direction D2 is suppressed. On the other hand, in the second direction D2, since the wide portions 21W are arranged in a predetermined cycle, it is possible to suppress a load required for designing the wide portions 21W.

  Further, the plurality of wide portion groups 21WG included in the lattice pattern 21G include a first wide portion group 21WG1 and a second wide portion group 21WG2 having different periods in the second direction D2. Therefore, the irregularity of the wide portion 21W in the first direction D1 can be improved as compared with the configuration including only the first wide portion group 21WG1. Therefore, moire due to the correlation between the periodicity of the lattice pattern 21G and the periodicity of the pixels 15P is further suppressed.

  When the lattice pattern 21G is formed from the metal film described above, the main line portion 21M and the wide portion 21W included in the lattice pattern 21G are formed by patterning the metal film by wet etching or dry etching. When the metal film is wet-etched or dry-etched, a mask corresponding to the main line portion 21M and the wide portion 21W is used. The wide portion 21W may include a wide portion 21W formed at a position different from the opening corresponding to the wide portion 21W of the mask and a wide portion 21W having a shape different from the opening.

[Lattice pattern design method]
A lattice pattern design method will be described with reference to FIG. Hereinafter, an example of a design method for arranging the plurality of wide portions 21W in the lattice pattern 21G with a predetermined period along the second direction D2 and irregularly along the first direction D1 will be described. To do.
The design method of the lattice pattern 21G includes a basic pattern creation process, a random number calculation process, and a basic pattern arrangement process.

  As shown in FIG. 9, in the basic pattern creation process, a basic pattern group BPG is created, and the basic pattern group BPG is constituted by ten types of first patterns BP1 to BP10. As shown in Table T, in the first pattern BP1, a plurality of wide portions 21W are arranged in a cycle for each of the two unit cells 21C along the second direction D2, that is, in the first cycle P1, and the wide portions 21W. The starting point position that is the starting point of is the first position L1. The first position L1 is, for example, one of four lattice points in one unit lattice 21C.

  In the second pattern BP2, a plurality of wide portions 21W are arranged in the first period P1 along the second direction D2 similarly to the first pattern BP1, and the start position of the wide portion 21W is the second position L2. The second position L2 is a position shifted from the first position L1 by a half distance of the unit cell 21C along the second direction D2. In each of the third pattern BP3 and the fourth pattern BP4, the plurality of wide portions 21W are also arranged in the first period P1 along the second direction D2, similarly to the first pattern BP1. The start position of the third pattern BP3 is a third position L3 that is shifted from the second position L2 by a half distance of the unit cell 21C along the second direction D2, and the start position of the fourth pattern BP4 is the first position. The fourth position L4 is shifted from the third position L3 by half the distance of the unit cell 21C along the second direction D2.

  On the other hand, as shown in Table T, in the fifth pattern BP5, the plurality of wide portions 21W are arranged in a cycle for each of the three unit cells 21C, that is, the second cycle P2, and the start point of the wide portion 21W is The starting point position is the first position L1.

  In each of the sixth pattern BP6 to the tenth pattern BP10, the plurality of wide portions 21W are arranged in the second period P2 along the second direction D2 as in the fifth pattern BP5. Then, the start positions of the sixth pattern BP6 to the tenth pattern BP10 are, in the same way as the first pattern BP1 to the fourth pattern BP4, from the start position of the basic pattern one order before, in the second direction D2. A position shifted by half the distance of the unit cell 21C is set. As a result, the second position L2 is set as the start position of the sixth pattern BP6, the third position L3 is set as the start position of the seventh pattern BP7, and the fourth position L4 is set as the start position of the eighth pattern BP8. The fifth position L5 is set as the starting point position of the ninth pattern BP9, and the sixth position L6 is set as the starting point position of the tenth pattern BP10.

  In the random number calculation step, for example, a random number is calculated for the numbers 1 to 10 assigned to each of the ten basic patterns described above using a predetermined pseudo-random number generation method. Thereby, the first pattern BP1 to the tenth pattern BP10 are irregularly arranged.

  In the basic pattern arranging step, a plurality of basic patterns are arranged along the first electrode direction DE1 according to the random number calculated in the random number calculating step. Accordingly, the lattice pattern 21G is designed to include a plurality of wide portions 21W that are arranged along the second direction D2 at a predetermined period and are irregularly arranged along the first direction D1.

  According to such a design method, a plurality of basic patterns created in advance are arranged according to a random number generated by a pseudo-random number generation method, whereby a lattice pattern 21G having a plurality of wide portions 21W irregularly arranged in the first direction D1. Can be designed. Therefore, by applying the wide portion 21W to each unit lattice 21C, the load applied to the design of the lattice pattern 21G can be reduced as compared with the design method in which the plurality of wide portions 21W are irregularly arranged along the first direction D1. it can.

  Further, according to the design method described above, the plurality of wide portions 21W are arranged along the second direction D2 in a state having a predetermined periodicity, while being arranged irregularly along the first direction D1. Is done. Therefore, when designing an arrangement pattern of the wide portions 21W that is preferable for suppressing moire, a method in which a plurality of wide portions 21W are randomly arranged at the same time along both the first direction D1 and the second direction D2. In comparison, when the arrangement pattern is changed, the degree of change in the moire state in the display device is reduced.

  On the other hand, in the method in which the plurality of wide portions 21W are randomly arranged at the same time along both the first direction D1 and the second direction D2, the state of moiré in the display device is changed when the arrangement pattern is changed. The degree of change increases. For this reason, it is sometimes difficult to find a preferable arrangement pattern for suppressing moire.

  In this regard, according to the design method described above, when the arrangement pattern is changed, the degree of change in the moire state in the display device is reduced, so that a preferable arrangement pattern can be easily found at least in the first direction D1.

  The number of the wide portions 21W or the total area of the wide portions 21W is such that the aperture ratio of the lattice pattern 21G in which the plurality of wide portions 21W are arranged is AR1, and the lattice pattern 21G composed only of the main line portion 21M. When the aperture ratio is AR2, it is preferably set so that the following relationship is established.

0.95 × AR1 ≦ AR2 ≦ 0.999 × AR1
According to such a configuration, the total light transmittance of the touch panel 20 tends to be in the preferred range described above.

As described above, according to the second embodiment, the effects listed below can be obtained.
(2) Since the plurality of unit lattices 21C constituting the lattice pattern 21G are arranged along the first direction D1 and the second direction D2, the periodic structure formed by the plurality of unit lattices 21C has a wide portion 21W. Moire can be suppressed by being disturbed by.

  (3) Of the first direction D1 and the second direction D2, moire caused by the period of the unit cells 21C arranged along the first direction D1 is suppressed. On the other hand, in the second direction D2, since the wide portions 21W are arranged in a predetermined cycle, it is possible to suppress a load required for designing the wide portions 21W.

  (4) Since the plurality of wide portion groups 21WG include the first wide portion group 21WG1 and the second wide portion group 21WG2 having different periods in the second direction D2, only the first wide portion group 21WG1 is included. The irregularity of the wide portion 21 </ b> W in the first direction D <b> 1 can be enhanced as compared with the configuration that is configured. Therefore, moire is further suppressed.

  (5) The unit grids 21C constituting the grid pattern 21G are arranged in a state having a predetermined inclination with respect to the direction in which the drive electrode 31DP and the sensing electrode 33SP extend. Therefore, the periodicity in the structure of the electrode compared to the configuration in which the direction in which the drive electrode 31DP extends is parallel to the first direction D1 and the direction in which the sensing electrode 33SP extends is parallel to the second direction D2, Moire due to the correlation with the periodicity in the structure of the lattice pattern 21G is hardly formed.

[Modification of Second Embodiment]
Note that the second embodiment described above can be implemented with appropriate modifications as follows.
[Position of wide part]
As shown in FIG. 10, the first wide portion group 21WG1 and the second wide portion group 21WG2 may be alternately repeated along the first direction D1. In the two wide portion groups 21WG adjacent to each other in the first direction D1, a plurality of wide portions 21W constituting the first wide portion group 21WG1 and a plurality of wide portions 21W constituting the second wide portion group 21WG2 May be two-dimensionally dispersed in the lattice pattern 21G in the following state.

  That is, the plurality of wide portions 21W constituting the first wide portion group 21WG1 and the plurality of wide portions 21W constituting the second wide portion group 21WG2 are the second direction D2 among the line segments constituting the lattice pattern 21G. The second electrode line 21G2 that is one line segment extending along the line may be sandwiched in the first direction D1. At this time, the wide portion 21W having a circular shape protrudes toward the outside in the width direction from the edge of the main line portion 21M having a linear shape.

According to such a configuration, the following effects can be obtained.
(6) Two wide portion groups 21WG having different arrangement periods of the wide portions 21W sandwich the second electrode line 21G2, which is one line segment extending along the second direction D2. Therefore, the periodicity of the lattice pattern 21G is likely to be visually disturbed between two wide portion groups 21WG having different arrangement periods of the wide portions 21W.

  As shown in FIG. 11, each of the plurality of unit cells 21C includes a first line segment S1 and a second line segment S2 arranged along the first direction D1. Each first line segment S1 is a part of one second electrode line 21G2, and each second line segment S2 is a part of one second electrode line 21G2. And the wide part 21W may contain the wide part 21W located in 1st line segment S1, and the wide part 21W located in 2nd line segment S2. At this time, the wide portion 21W having a circular shape protrudes toward the outside in the width direction from the edge of the main line portion 21M having a linear shape.

According to such a configuration, the following effects can be obtained.
(7) Since there are two positions of the wide portion 21W in the first direction D1 with respect to one unit lattice 21C, compared with the configuration in which the position of the wide portion 21W is one with respect to one unit lattice 21C. Thus, irregularities in the plurality of wide portions 21W increase in the first direction D1. Therefore, moire is further suppressed.

  In FIG. 11, a configuration in which the lattice pattern 21G includes a plurality of first wide portion groups 21WG1 arranged along the first direction D1 is described, but the lattice pattern 21G is similar to the second embodiment described above. The first wide portion group 21WG1 and the second wide portion group 21WG2 may be provided.

  Moreover, it is possible to apply the design method of the lattice pattern 21G in the second embodiment also to such a configuration. In this case, the basic pattern in which the wide portion 21W is located in the first line segment S1 and the wide portion 21W in the second line segment for each of a plurality of basic patterns having different starting points in the second direction D2. The basic pattern located in S2 may be created.

  In the first wide portion group 21WG1, a plurality of wide portions 21W are arranged in the first period P1 that is the cycle of the two unit cells 21C along the second direction D2, and in the second wide portion group 21WG2, a plurality of wide portions The parts 21W are arranged in the second period P2 that is the period of the three unit cells 21C along the second direction D2. Not limited to this, the first period P1 in the first wide part group 21WG1 and the second period P2 in the second wide part group 21WG2 are periods in which the first period P1 and the second period P2 are different from each other. In addition, the plurality of wide portions 21 </ b> W can be arbitrarily set in a range in which the lattice pattern 21 </ b> G is irregularly arranged along the first direction D <b> 1.

  The plurality of wide portion groups 21WG includes a first wide portion group 21WG1 and a second wide portion group 21WG2. Not limited to this, the plurality of wide portion groups 21WG may be composed of three or more types of wide portion groups 21WG in which the cycles of the plurality of wide portions 21W are different from each other. The width of the wide portions 21W may be one type.

  In the basic pattern group BPG, in the basic patterns whose order is adjacent to each other, the start point positions are different from each other by a distance that is half the unit cell 21C. Not limited to this, in the basic patterns in the basic pattern group BPG, in the basic patterns that are adjacent to each other, the start point positions may be different from each other by a distance larger than half of the unit cell 21C, or smaller than half of the unit cell 21C. They may differ from each other only by distance.

  The multiple wide portions 21W are irregularly arranged along the first direction D1, while being arranged at a predetermined cycle along the second direction D2. Not limited to this, the plurality of wide portions 21 </ b> W may be irregularly arranged along the first direction D <b> 1 and irregularly arranged along the second direction D <b> 2. Alternatively, the plurality of wide portions 21W may be regularly arranged along the first direction D1 and irregularly arranged along the second direction D2.

  -One wide part 21W is located in some unit cell 21C among a plurality of unit cells 21C which constitute lattice pattern 21G. Not limited to this, as long as the plurality of wide portions 21W are irregularly arranged in at least one of the first direction D1 and the second direction D2, one wide portion 21W may be positioned in all the unit cells 21C. .

  Among the plurality of unit lattices 21C, one wide portion 21W is positioned in the unit lattice 21C including the wide portion 21W. Not limited to this, if the plurality of wide portions 21W are irregularly arranged in at least one of the first direction D1 and the second direction D2, the unit cell 21C including the wide portions 21W includes two or more wide portions 21W. May be located. At this time, the number of wide portions 21W positioned in one unit cell 21C may be constant or may not be constant.

  The direction in which the plurality of unit lattices 21C constituting the lattice pattern 21G are arranged and the direction in which the wide portions 21W are arranged are parallel to each other. Not limited to this, the direction in which the plurality of unit cells 21C are arranged and the direction in which the wide portions 21W are arranged may intersect at a predetermined angle.

  The design of the lattice pattern 21G described in the second embodiment and the modification of the second embodiment may not be performed using the above-described design method. For example, a plurality of units constituting the lattice pattern 21G Whether or not the wide portion 21W is arranged for each of the lattices 21C may be individually determined.

[Shape of deformed part]
The wide portion 21W has a circular shape. For example, as shown in FIG. 12, the wide part included in the lattice pattern 21G may be the wide part 21W1 having an elliptical shape or the wide part 21W2 having a rectangular shape. Good. The wide portions 21W1 and 21W2 have the centers of the wide portions 21W1 and 21W2 positioned at the center in the width direction of the first electrode line 21G1, but project from the edge of the first electrode line 21G1 like the wide portion 21W3. It may be a wide portion having a shape other than a circular shape, for example, a rectangular shape. When the wide part protrudes from the edge of the first electrode line 21G1 or the second electrode line 21G2, the wide part has any shape such as an elliptical shape, a triangular shape, a semicircular shape, and a semielliptical shape. You may have.

  -In 2nd Embodiment, although the wide part 21W is illustrated as a deformed part, as FIG. 13 shows, the deformed part is the main line part which has a linear shape in the 1st electrode line 21G1 or the 2nd electrode line 21G2. The narrow portion 21N having a line width smaller than 21M may be used. As shown in FIG. 13, the recess for forming the narrow portion 21N may be a recess 21Na having a semi-elliptical arc shape in plan view, or a recess having a semi-arc shape. There may be. Alternatively, the recess may be a recess 21Nb having a shape that opens a region having a rectangular shape in plan view.

  When the deformed portion is a narrow portion 21N having a line width smaller than that of the main line portion 21M, the narrow portion 21N is less visible than the main line portion 21M because the line width is small. The formed moire is less visible. As a result, the range of angles where moire is not visually recognized among the angles θ formed by the first direction D1 and the first electrode direction DE1 is increased.

  -In 2nd Embodiment, the wide part 21W is illustrated as a deformed part. Not limited to this, as shown in FIG. 14, the main line portion 21M has a linear shape in the first electrode line 21G1 or the second electrode line 21G2, while the deformed portion has a semicircular arc shape in plan view. It may be a bent portion 21B.

  The plurality of deformed portions are different from the first shape and the first deformed portion having the first shape among the deformed portions described in the second embodiment and the modified example of the second embodiment. And a second deformed portion having a shape of 2. Alternatively, the plurality of deformed parts may include three or more kinds of deformed parts having different shapes.

According to such a configuration, the following effects can be obtained.
(8) Compared with the configuration in which the shape of the deformed portion is one type, irregularities due to the plurality of deformed portions are further increased.

  The plurality of deformed portions may include any of the shapes described in the second embodiment and the modified example of the second embodiment, but may include two or more kinds of deformed portions having different sizes. . Even with such a configuration, the effect according to the above-described (8) can be obtained.

  The plurality of deformed portions include two or more kinds of deformed portions having different shapes from the deformed portions described in the second embodiment and the modified example of the second embodiment, and have a size. Two or more types of different shaped parts may be included. Even with such a configuration, the effect according to the above-described (8) can be obtained.

  When the deformed portion is the wide portion described in the second embodiment and the modification of the second embodiment, the wide portion has a portion having one shape, for example, a circular shape or a quadrangular shape. The structure which the part which was performed was repeated twice or more along the 1st direction D1 may be sufficient.

  Alternatively, the wide portion is a range in which a plurality of wide portions are irregularly arranged along at least one of the first direction D1 and the second direction D2, and a portion having one shape is along the second direction D2. The configuration may be repeated twice or more.

  Further, even when the deformed portion is the bent portion 21B, the bent portion 21B is 1 in a range where a plurality of wide portions are irregularly arranged along at least one of the first direction D1 and the second direction D2. The structure which the part which has one shape was repeated 2 times or more along the 2nd direction D2 may be sufficient.

  As shown in FIG. 15, the lattice pattern 21G includes two first electrode lines 21G1 and two second electrodes constituting the unit lattice 21C in a region surrounded by one unit lattice 21C. A dummy portion 21D separated from the line 21G2 may be provided. The dummy part 21D may have a circular shape, or may have another shape, for example, a quadrangular shape or a triangular shape.

  The lattice pattern 21G may include one dummy portion 21D or a plurality of dummy portions 21D. When the lattice pattern 21G includes a plurality of dummy portions 21D, one dummy portion 21D may be located in a region surrounded by one unit lattice 21C, or a plurality of dummy portions 21D may be located. .

  In the configuration in which the lattice pattern 21G includes a plurality of dummy portions 21D, the plurality of dummy portions 21D are preferably arranged irregularly along at least one of the first direction D1 and the second direction D2. Thereby, since the periodicity of the structure in the lattice pattern 21G is also disturbed by the plurality of dummy portions 21D, moire is further suppressed.

[Lattice pattern]
With reference to FIGS. 16 to 21, a configuration that can be applied as the above-described lattice pattern 21G will be described. 16 to 18 show a planar structure of the lattice pattern 21G when viewed from the direction facing the sensing electrode surface 33S. In FIGS. 16 to 18, the electrode lines constituting the drive electrode 31DP are black for convenience of explaining the arrangement of the plurality of electrode lines constituting the drive electrode 31DP and the plurality of electrode lines constituting the sensing electrode 33SP. It is shown by the bold line.

  In any of the configurations described with reference to FIGS. 16 to 20, the direction in which the unit cells 21C are arranged intersects with the direction in which the drive electrode 31DP extends and the direction in which the sensing electrode 33SP extends at a predetermined angle. On the other hand, the direction in which the unit cells 21C are arranged and the direction in which the deformed parts are arranged are parallel to each other.

  However, the direction in which the unit cells 21C are arranged may be parallel to the direction in which the drive electrode 31DP extends and the direction in which the sensing electrode 33SP extends. In addition, the direction in which the deformed portions are arranged may intersect the direction in which the unit cells 21C are arranged at a predetermined angle.

  As shown in FIG. 16, the drive electrode 31DP includes a plurality of drive main lines 31ML having a linear shape extending along the first direction D1, and a plurality of drive sublines 31SL having a linear shape extending along the second direction D2. And. The plurality of drive main lines 31ML are arranged along the second direction D2 for each unit length which is the length of one side of the unit lattice 21C.

  Of the plurality of drive sub-lines 31SL, two drive sub-lines 31SL adjacent to each other in the second direction D2 constitute one drive sub-line pair, and the drive sub-line pair has a unit length in the first direction D1. It is repeated every integer multiple of. Each of the two drive sub-lines 31SL constituting one drive sub-line pair is connected to the three drive main lines 31ML, and the two drive sub-lines 31SL are located at the center of the drive electrode 31DP in the second direction D2. Are connected to one common drive main line 31ML.

  The sensing electrode 33SP includes a plurality of sensing main lines 33ML having a linear shape extending along the second direction D2, and a plurality of sensing sublines 33SL having a linear shape extending along the first direction D1. The plurality of sensing main lines 33ML are arranged along the first direction D1 for each unit length described above.

  Among the plurality of sensing sublines 33SL, two sensing sublines 33SL adjacent to each other in the first direction D1 constitute one sensing subline pair, and the sensing subline pair has a unit length in the second direction D2. It is repeated every integer multiple of. Each of the two sensing sub-lines 33SL constituting one sensing sub-line pair is connected to the three sensing main lines 33ML, and the two sensing sub-lines 33SL are at the center of the first direction D1 in the sensing electrode 33SP. Are connected to one common sensing main line 33ML.

  In a plan view facing the sensing electrode surface 33S, each of the drive main lines 31ML three-dimensionally intersects with the plurality of sensing main lines 33ML, while each of the drive sub-lines 31SL has the sensing main line 33ML in the second direction D2. Located in a discontinuous part. Further, in the plan view facing the sensing electrode surface 33S, each of the sensing main lines 33ML three-dimensionally intersects with the plurality of drive main lines 31ML, while each of the sensing sublines 33SL has a drive main line in the first direction D1. 31ML is located in the discontinuous part. Accordingly, the plurality of unit cells 21C are arranged along the first direction D1 and the second direction D2 in a plan view facing the sensing electrode surface 33S.

  As shown in FIG. 17, the plurality of drive electrodes 31DP include a plurality of drive main lines 31ML and a plurality of drive sub-lines 31SL. Each of the plurality of drive main lines 31ML is a line segment having a linear shape extending along the first direction D1 and being interrupted between the drive electrodes 31DP adjacent to each other. In the plurality of drive main lines 31ML, portions that are interrupted between mutually adjacent drive electrodes 31DP are surrounded by a broken-line circle in FIG. 17 and are arranged along the first electrode direction DE1.

  The plurality of drive main lines 31ML includes a drive main line group 31G configured by a part of the plurality of drive main lines 31ML. An interval between two drive main line groups 31G adjacent to each other in the first electrode direction DE1 is larger than an interval between drive main lines 31ML included in the same drive main line group 31G.

  The plurality of drive sub-lines 31SL have a linear shape extending along the second direction D2, and are line segments that are interrupted between the drive electrodes 31DP adjacent to each other. In the plurality of drive sub-lines 31SL, portions where the drive electrodes 31DP are adjacent to each other are surrounded by broken-line circles in FIG. 17 and are arranged along the first electrode direction DE1. Each of the plurality of drive sub-lines 31SL connects the plurality of drive main lines 31ML constituting the drive main line group 31G in parallel.

  Each of the plurality of sensing main lines 33ML has a linear shape extending along the second direction D2, and is a line segment that is interrupted between the sensing electrodes 33SP adjacent to each other. In the plurality of sensing main lines 33ML, portions that are interrupted between the sensing electrodes 33SP adjacent to each other are surrounded by a broken-line circle in FIG. 17 and arranged along the second electrode direction DE2.

  The plurality of sensing main lines 33ML includes a sensing main line group 33G configured by a part of the plurality of sensing main lines 33ML. An interval between two sensing main line groups 33G adjacent to each other in the second electrode direction DE2 is larger than an interval between sensing main lines 33ML included in the same sensing main line group 33G.

  The plurality of sensing sub-lines 33SL are line segments that have a linear shape extending along the first direction D1 and are interrupted between the sensing electrodes 33SP adjacent to each other. In the plurality of sensing sublines 33SL, portions that are interrupted between the sensing electrodes 33SP adjacent to each other are surrounded by a broken-line circle in FIG. 17 and aligned along the second electrode direction DE2. Each of the plurality of sensing sub-lines 33SL connects the plurality of sensing main lines 33ML constituting the sensing main line group 33G in parallel.

  In plan view facing the sensing electrode surface 33S, the drive main line 31ML is a position that intersects the sensing main line 33ML and does not overlap the sensing subline 33SL along the first direction D1. Is arranged. The drive sub line 31SL is disposed at a position that intersects with the sensing sub line 33SL and that does not overlap with the sensing main line 33ML along the second direction D2. The sensing main line 33ML is disposed at a position that intersects with the drive main line 31ML and does not overlap with the drive sub line 31SL along the second direction D2. The sensing subline 33SL is disposed at a position that intersects with the drive subline 31SL and that does not overlap with the drive main line 31ML along the first direction D1.

One sensing subline 33SL is arranged in the gap between the two drive main line groups 31G adjacent to each other in the second direction D2. On the other hand, one drive sub line 31SL is arranged in the gap between two sensing main line groups 33G adjacent to each other in the first direction D1.
Accordingly, the plurality of unit cells 21C are arranged along the first direction D1 and the second direction D2 in a plan view facing the sensing electrode surface 33S.

  As shown in FIG. 18, the lattice pattern 21G is composed of a plurality of drive electrode lines 31L located on the drive electrode surface 31S and a plurality of sensing electrode lines 33L located on the sensing electrode surface 33S.

  Each of the plurality of drive electrode lines 31L extends along the first electrode direction DE1, and the plurality of drive electrode lines 31L are arranged along the second electrode direction DE2. One drive electrode 31DP located on the drive electrode surface 31S is composed of a plurality of drive electrode lines 31L.

  One drive electrode line 31L includes a plurality of repeating units 31RU, and the plurality of repeating units 31RU are continuous along the first electrode direction DE1. The repeat unit 31RU includes a drive main line 31ML extending along the first direction D1, a drive subline 31SL extending along the second direction D2, and two drive auxiliary lines 31AL that also extend along the second direction D2. ing. The drive main line 31ML has a length twice the unit length described above along the first direction D1, and the drive sub line 31SL and each drive auxiliary line 31AL are units along the second direction D2. It has a length.

  In one repeating unit 31RU, a drive sub line 31SL is connected to one end of the drive main line 31ML. Of the two ends of the drive sub line 31SL, the drive main line 31ML of another repeat unit 31RU adjacent to each other in the first electrode direction DE1 is connected to the end where the drive main line 31ML included in the same repeat unit 31RU is not connected. Is connected. On the other hand, one drive auxiliary line 31AL is connected to each of the two ends of the drive sub line 31SL.

  On the other hand, each of the plurality of sensing electrode lines 33L extends along the second electrode direction DE2, and the plurality of sensing electrode lines 33L are arranged along the first electrode direction DE1. One sensing electrode 33SP located on the sensing electrode surface 33S is composed of a plurality of sensing electrode lines 33L.

  One sensing electrode line 33L includes a plurality of repeating units 33RU, and the plurality of repeating units 33RU are continuous along the second electrode direction DE2. The repeat unit 33RU includes a sensing main line 33ML that extends along the second direction D2, a sensing subline 33SL that extends along the first direction D1, and two sensing auxiliary lines 33AL that also extend along the first direction D1. ing. The sensing main line 33ML has a length twice as long as the unit length along the second direction D2, and the sensing subline 33SL and each sensing auxiliary line 33AL have a unit length along the first direction D1. Have.

  In one repeating unit 33RU, a sensing subline 33SL is connected to one end of the sensing main line 33ML. Of the two ends of the sensing sub-line 33SL, the sensing main line 33ML of another repeating unit 33RU adjacent to each other in the second electrode direction DE2 is connected to the end where the sensing main line 33ML included in the same repeating unit 33RU is not connected. Is connected. On the other hand, one sensing auxiliary line 33AL is connected to each of the two ends of the sensing subline 33SL.

In a plan view facing the sensing electrode surface 33S, the drive main line 31ML of each repeating unit 31RU three-dimensionally intersects with the sensing main line 33ML of one repeating unit 33RU. On the other hand, one drive sub line 31SL and two drive auxiliary lines 31AL connected to the drive sub line 31SL are located between the two sensing main lines 33ML in the second direction D2. Further, one sensing sub line 33SL and two sensing auxiliary lines 33AL connected to the sensing sub line 33SL are located between the two drive main lines 31ML in the first direction D1.
Accordingly, the plurality of unit cells 21C are arranged along the first direction D1 and the second direction D2 in a plan view facing the sensing electrode surface 33S.

  The configuration in which the plurality of repeating units 31RU are arranged on the drive electrode surface 31S and the plurality of repeating units 33RU are arranged on the sensing electrode surface 33S can be changed as follows.

  That is, as shown in FIG. 19, the drive electrode 31DP extending along the first electrode direction DE1 includes a plurality of wide drive portions 31DPa and a plurality of narrow drive portions 31DPb. The plurality of drive wide portions 31DPa are arranged at a constant interval along the first electrode direction DE1, and the plurality of drive narrow portions 31DPb are formed of two drive wide portions 31DPa adjacent to each other in the first electrode direction DE1. Two drive wide portions 31DPa are connected one by one between them.

  A plurality of drive dummy portions 31DD are arranged along the first electrode direction DE1 between two drive electrodes 31DP adjacent to each other in the second electrode direction DE2. Each drive dummy portion 31DD is separated from the drive electrodes 31DP adjacent to each other.

  On the other hand, the sensing electrode 33SP extending along the second electrode direction DE2 includes a plurality of sensing wide portions 33SPa and a plurality of sensing narrow portions 33SPb. The plurality of sensing wide portions 33SPa are arranged at a certain interval along the second electrode direction DE2, and the plurality of sensing narrow portions 33SPb are arranged between two sensing wide portions 33SPa adjacent to each other in the second electrode direction DE2. Two sensing wide portions 33SPa are connected one by one in between.

  A plurality of sensing dummy portions 33SD are arranged along the second electrode direction DE2 between two sensing electrodes 33SP adjacent to each other in the first electrode direction DE1. Each sensing dummy part 33SD is separated from the sensing electrodes 33SP adjacent to each other.

  In plan view facing the sensing electrode surface 33S, one drive wide portion 31DPa is three-dimensionally overlapped with one sensing dummy portion 33SD, and one sensing wide portion 33SPa is three-dimensionally overlapped with one drive dummy portion 31DD. ing. Furthermore, in a plan view facing the sensing electrode surface 33S, one drive narrow portion 31DPb three-dimensionally overlaps one sensing narrow portion 33SPb.

  That is, since the drive wide portion 31DPa and the sensing wide portion 33SPa adjacent to each other do not overlap three-dimensionally, the capacitance between the drive electrode 31DP and the sensing electrode 33SP is likely to change.

  In FIG. 19, the plurality of repeating units 31RU located on the drive electrode surface 31S are indicated by lines having a relatively small line width, and the plurality of repeating units 33RU located on the sensing electrode surface 33S are relatively line-shaped. It is shown as a wide line. Further, in FIG. 19, in the series of repeating units 31 RU and the series of repeating units 33 RU, a part that functions as an electrode line is marked with dots, while a part that functions as a dummy pattern is shown in white. ing.

  The configuration in which the plurality of repeating units 31RU are arranged on the drive electrode surface 31S and the plurality of repeating units 33RU are arranged on the sensing electrode surface 33S can be changed as follows. The modified example described below is different in the configuration of the drive wide portion 31DPa and the sensing wide portion 33SPa from the modified example described with reference to FIG. Therefore, in the following, such differences will be mainly described.

  That is, as shown in FIG. 20, the drive electrode 31DP extending along the first electrode direction DE1 includes a plurality of drive wide portions 31DPa and a plurality of drive narrow portions 31DPb. Among these, each of the plurality of wide drive portions 31DPa is configured by a lattice pattern including a plurality of repeating units 31RU.

  On the other hand, the sensing electrode 33SP extending along the second electrode direction DE2 includes a plurality of sensing wide portions 33SPa and a plurality of sensing narrow portions 33SPb. Among these, each of the plurality of sensing wide portions 33SPa is configured by a lattice pattern including a plurality of repeating units 33RU.

  In plan view opposite to the sensing electrode surface 33S, one drive narrow portion 31DPb is three-dimensionally overlapped with one sensing narrow portion 33SPb. On the other hand, in a plan view facing the sensing electrode surface 33S, the repeating unit 33RU is not located in a portion that three-dimensionally overlaps each drive wide portion 31DPa on the sensing electrode surface 33S. In addition, in the plan view facing the sensing electrode surface 33S, the repeating unit 31RU is not located at a portion of the drive electrode surface 31S that is three-dimensionally overlapped with each sensing wide portion 33SPa.

  Even in such a configuration, the drive wide portion 31DPa and the sensing wide portion 33SPa that are adjacent to each other do not overlap three-dimensionally as in the modification described with reference to FIG. 19, and therefore, between the drive electrode 31DP and the sensing electrode 33SP. The capacitance of is easy to change.

  As shown in FIG. 21, each of the plurality of drive electrode lines 31L located on the drive electrode surface 31S may have a bent line shape extending along the first direction D1 and having a plurality of bending points. . Each of the plurality of sensing electrode lines 33L located on the sensing electrode surface 33S may have a polygonal line shape extending along the second direction D2 and having a plurality of bending points. In such a configuration, the plurality of unit cells 21C constituting the lattice pattern 21G include not only the unit cell 21C having a quadrangular shape but also the unit cell 21C having a pentagonal shape and the unit cell 21C having a hexagonal shape.

According to such a configuration, the following effects can be obtained.
(9) Since the lattice pattern 21G is formed by electrode lines having a bent line shape having a plurality of bending points, the periodicity in the lattice pattern 21G is compared with a lattice pattern formed by electrode lines having a linear shape. Is easily disturbed. Therefore, it is difficult to form moire based on the periodicity in the structure of the lattice pattern 21G.

  Each of the plurality of drive electrode lines 31L positioned on the drive electrode surface 31S may have a curved shape extending along the first direction D1 and having a plurality of bending points. Each of the plurality of sensing electrode lines 33L positioned on the sensing electrode surface 33S may have a curved shape extending along the second direction D2 and having a plurality of bending points. Even with such a configuration, it is possible to obtain the effect according to the above (9).

  The grid pattern 21G may be formed by a grid pattern configured by a plurality of electrode lines positioned on the drive electrode surface 31S and a grid pattern configured by a plurality of electrode lines positioned on the sensing electrode surface 33S. Alternatively, the lattice pattern 21G may be formed by a lattice pattern located on the drive electrode surface 31S and a plurality of electrode lines located on the sensing electrode surface 33S and extending along a predetermined direction. Alternatively, the grid pattern 21G may be formed by a grid pattern positioned on the sensing electrode surface 33S and a plurality of electrode lines positioned on the drive electrode surface 31S and extending along a predetermined direction.

  The plurality of drive electrodes 31DP and the plurality of sensing electrodes 33SP may not form the grid pattern 21G configured by one type of unit cell 21C in a plan view facing the sensing electrode surface 33S. For example, a pattern in which a lattice pattern located on the drive electrode surface 31S and a lattice pattern located on the sensing electrode surface 33S are arranged in a plurality of lattices having different shapes in plan view facing the sensing electrode surface 33S. The structure may be stacked so as to form.

  Even in such a configuration, the plurality of deformed portions are irregular along at least one of the first direction D1 that is one direction constituting the sensing electrode surface 33S and the second direction D2 orthogonal to the first direction D1. If it is lined up, the effect according to (1) mentioned above can be acquired.

[Touch panel]
As shown in FIG. 22, the transparent substrate 31 and the transparent adhesive layer 32 may be omitted from the touch sensor electrode 21 constituting the touch panel 20. In such a configuration, one surface facing the display panel 10 among the surfaces of the transparent dielectric substrate 33 is set as the drive electrode surface 31S, and the drive electrode 31DP may be positioned on the drive electrode surface 31S. The sensing electrode 33SP may be positioned on the surface of the transparent dielectric substrate 33 that faces the drive electrode surface 31S.
In such a configuration, the drive electrode 31DP is formed, for example, by patterning one thin film formed on the drive electrode surface 31S.

  As shown in FIG. 23, 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 the drive electrode surface 31S that is one surface of the transparent substrate 31, and the sensing electrode 33SP is the sensing electrode surface 33S that is one surface of the transparent dielectric substrate 33. Formed. The surface of the transparent substrate 31 facing the drive electrode surface 31S and the surface of the transparent dielectric substrate 33 corresponding to the sensing electrode surface 33S are bonded by the transparent adhesive layer 32.

  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, among the touch sensor electrodes 21, a plurality of drive electrodes 31DP are positioned on the TFT layer 13, while a plurality of sensing electrodes 33SP are positioned between the color filter substrate 16 and the upper polarizing plate 17. An in-cell configuration can be adopted. Alternatively, an on-cell configuration in which the touch sensor electrode 21 is located between the color filter substrate 16 and the upper polarizing plate 17 may be employed.

  DESCRIPTION OF SYMBOLS 10 ... Display panel, 10S ... Display surface, 11 ... Lower polarizing plate, 12 ... Thin-film transistor substrate, 13 ... TFT layer, 14 ... Liquid crystal layer, 15 ... Color filter layer, 15a ... Black matrix, 15B ... Blue colored layer, 15G ... green colored layer, 15P ... pixel, 15R ... red colored layer, 16 ... color filter substrate, 17 ... upper polarizing plate, 20 ... touch panel, 20S ... operation surface, 21 ... touch sensor electrode, 21A ... deformed part, 21B ... Bending part, 21C ... unit lattice, 21D ... dummy part, 21G ... lattice pattern, 21G1 ... first electrode line, 21G2 ... second electrode line, 21M ... main line part, 21N ... narrow part, 21Na, 21Nb ... depression, 21W , 21W1, 21W2, 21W3 ... wide portion, 21WG ... wide portion group, 21WG1 ... first wide portion group, 21WG2 ... second wide portion group, 22 ... cover layer DESCRIPTION OF SYMBOLS 23 ... Transparent adhesive layer, 30 ... Transparent dielectric substrate, 31 ... Transparent substrate, 31AL ... Drive auxiliary line, 31DD ... Drive dummy part, 31DP ... Drive electrode, 31DPa ... Drive wide part, 31DPb ... Drive narrow part, 31G ... Drive main line group, 31L ... drive electrode line, 31ML ... drive main line, 31MP ... drive main line part, 31P ... drive pad, 31RU ... repeating unit, 31S ... drive electrode surface, 31SL ... drive sub-line, 32 ... transparent adhesive layer, 33 ... Transparent dielectric substrate, 33AL ... Sensing auxiliary line, 33G ... Sensing main line group, 33L ... Sensing electrode line, 33ML ... Sensing main line, 33MP ... Sensing main line part, 33P ... Sensing pad, 33RU ... Repeat unit, 33S ... Sensing electrode surface , 33SD ... sensing dummy part, 3SL ... Sensing sub-line, 33SP ... Sensing electrode, 33SPa ... Sensing wide part, 33SPb ... Sensing narrow part, 34 ... Selection circuit, 35 ... Detection circuit, 35a ... Signal acquisition part, 35b ... Signal processing part, 36 ... Control part , BPG ... basic pattern group, S1 ... first line segment, S2 ... second line segment.

Claims (11)

A transparent dielectric substrate comprising a first surface and a second surface opposite to the first surface;
A plurality of first electrodes, each of which is composed of a plurality of electrode lines located on the first surface, and arranged at intervals along a direction parallel to the first surface;
A second electrode composed of a plurality of electrode lines positioned on the second surface, the plurality of second electrodes arranged at intervals along a direction parallel to the second surface,
The electrode lines that are at least one of the plurality of electrode lines located on the first surface and the plurality of electrode lines located on the second surface,
Each of the plurality of electrode wires constituting the electrode wire group includes a main line portion and a deformed portion,
The main line portion has a shape to be a skeleton of the electrode line including the main line portion,
The deformed portion has a shape different from the main line portion;
The plurality of deformed portions are two-dimensionally dispersed in a plan view facing the second surface, and are orthogonal to the first direction, which is one direction constituting the second surface, and the first direction. The electrodes for the touch sensor that are irregularly arranged along at least one of the second directions. In the plan view, a plurality of the electrode lines located on the first surface and a plurality of the electrode lines located on the second surface form a lattice pattern that is a repeating unit lattice having a quadrilateral shape,
The touch sensor electrode according to claim 1, wherein the plurality of unit lattices are arranged along the first direction and the second direction. The touch sensor electrode according to claim 2, wherein at least some of the plurality of deformed portions are irregularly arranged along the first direction and arranged at a predetermined cycle along the second direction. A plurality of the deformed portions arranged along the second direction constitute one deformed portion group,
The plurality of deformed portions include the plurality of deformed portion groups arranged along the first direction,
The plurality of deformed portions included in each of the plurality of deformed portion groups are arranged in a predetermined cycle along the second direction,
In the plan view, the plurality of deformed portion groups are:
A plurality of the deformed portions included in the deformed portion group, arranged in the first direction along the second direction;
The touch sensor according to claim 3, wherein the plurality of deformed parts included in the deformed part group includes a second deformed part group arranged along the second direction at a second period different from the first period. Electrode. The first variant part group and the second variant part group are:
Repeated alternately along the first direction,
In the two deformed portion groups adjacent to each other in the first direction, the plurality of deformed portions constituting the first deformed portion group and the plurality of deformed portions constituting the second deformed portion group are: The touch sensor electrode according to claim 4, wherein one line segment extending in the second direction is sandwiched in the first direction among the line segments constituting the lattice pattern. Each of the plurality of unit cells is
A first line segment and a second line segment arranged along the first direction;
A plurality of the deformed portions are
The deformed portion located in the first line segment;
The touch sensor electrode according to any one of claims 2 to 5, including the deformed portion positioned in the second line segment. The plurality of deformed portions include a first deformed portion having a first shape and a second deformed portion having a second shape different from the first shape. An electrode for a touch sensor as described in 1. The first direction is a direction intersecting a direction in which the first electrode extends;
The touch sensor electrode according to any one of claims 2 to 7, wherein the second direction is a direction intersecting a direction in which the second electrode extends. Each of the plurality of electrode lines located on the first surface has a polygonal line shape extending along the first direction and having a plurality of bending points,
9. Each of the plurality of electrode lines located on the second surface has a bent line shape extending along the second direction and having a plurality of bending points. An electrode for a touch sensor as described in 1. A touch sensor electrode comprising: a plurality of first electrodes; a plurality of second electrodes; and a transparent dielectric substrate positioned between the plurality of first electrodes and the plurality of second electrodes;
A cover layer covering the touch sensor electrode;
A peripheral circuit for measuring a capacitance between the first electrode and the second electrode,
The touch sensor electrode according to any one of claims 1 to 9, wherein the touch sensor electrode is a touch sensor electrode. A display panel for displaying information;
A touch panel that transmits the information displayed on the display panel;
A drive circuit for driving the touch panel,
The said touch panel is a touch panel of Claim 10. A display apparatus.

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