WO2018193891A1

WO2018193891A1 - Touch sensor

Info

Publication number: WO2018193891A1
Application number: PCT/JP2018/014874
Authority: WO
Inventors: 到大谷
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2017-04-17
Filing date: 2018-04-09
Publication date: 2018-10-25
Also published as: JPWO2018193891A1

Abstract

Provided is a touch sensor, comprising: an insulating substrate part which includes an arrangement face; a plurality of conductive fine wires which have been disposed within the arrangement face of the substrate part; and a plurality of electrically-independent fine wires which abut the substrate part and are insulated from the plurality of conductive fine wires. The plurality of electrically-independent fine wires are arranged at positions proximal to missing parts of the pattern formed by the plurality of conductive fine wires. With this touch sensor, separation parts are less likely to be seen.

Description

Touch sensor

The present invention relates to a touch sensor used in an input operation unit of various electronic devices.

Various electronic devices have an input operation unit. The input operation unit includes a display device and a capacitive touch sensor disposed in front of the display device.

The capacitive touch sensor has a resin base material portion and sensor electrodes arranged on the base material portion. In many cases, the sensor electrode is made of ITO, but in recent years, the sensor electrode is often formed of a thin conductive wire made of a conductive material such as a metal arranged in a net shape. The conductive thin wires are arranged in a grid, for example.

In the conventional capacitive touch sensor disclosed in Patent Document 1, the sensor electrode is formed of a conductive thin wire arranged in a net shape, and the outer shape of the sensor electrode is defined by a linear separation portion.

JP 2006-344163 A

The touch sensor includes an insulating base material portion including an arrangement surface, a plurality of conductive thin wires provided in the arrangement surface of the base material portion, and a plurality of abutting the base material portion and insulated from the plurality of conductive thin wires. With independent thin wires. The plurality of independent thin wires are arranged at positions close to the missing pattern portions of the plurality of conductive thin wires.

分離 With this touch sensor, the separation part is difficult to see.

FIG. 1A is a plan view of a touch sensor according to an embodiment. 1B is a cross-sectional view of the touch sensor shown in FIG. 1A taken along line 1B-1B. FIG. 2 is an enlarged view of the touch sensor shown in FIG. 1A. FIG. 3 is an enlarged view of the touch sensor shown in FIG. 1A. 4A is an enlarged view of the touch sensor shown in FIG. 4B is a cross-sectional view taken along line 4B-4B of the touch sensor shown in FIG. 4A. FIG. 4C is an enlarged view of the touch sensor shown in FIG. 4A. FIG. 5A is an enlarged view of the touch sensor shown in FIG. FIG. 5B is an enlarged view of the touch sensor shown in FIG. 5A. 6A is an enlarged view of the touch sensor shown in FIG. 6B is an enlarged view of the touch sensor shown in FIG. 6A. FIG. 7A is a plan view of another touch sensor according to the embodiment. FIG. 7B is a cross-sectional view taken along line 7B-7B of the touch sensor shown in FIG. 7A.

FIG. 1A is a plan view of a touch sensor 501 according to the embodiment. 1B is a cross-sectional view taken along line 1B-1B of touch sensor 501 shown in FIG. 1A. 2 and 3 are enlarged views of the touch sensor 501 shown in FIG. 1A.

The touch sensor 501 according to the embodiment is a capacitive touch sensor. The touch sensor 501 has the base material part 10 and the sensor electrode 20 as shown in FIG. 1A. The base material portion 10 is made of an insulating material such as polycarbonate (PC) resin having a thin plate shape. The sensor electrode 20 is disposed only on the surface 10 A of the base material portion 10 and includes a transmission electrode 22 and a reception electrode 24. The surface 10A of the base material part 10 is an arrangement surface 10P on which the sensor electrode 20 is provided, and the sensor electrode 20 is provided in the arrangement surface 10P. No electrode is arranged on the surface 10B opposite to the surface 10A of the base material portion 10.

FIG. 2 is an enlarged view of the area A1 shown in FIG. 1A and shows the outer shape of the sensor electrode 20. FIG. The outer shape of the transmission electrode 22 and the reception electrode 24 is defined by a linear separation portion 30. The transmission electrode 22 and the reception electrode 24 are composed of a plurality of conductive thin wires arranged so as to form a net shape in the arrangement surface 10P. FIG. 3 shows the thin conductive wires 11 arranged in the arrangement surface 10 P together with the sensor electrodes 20. A dummy pattern that insulates the transmission electrode 22 and the reception electrode 24 from each other is disposed between the transmission electrode 22 and the reception electrode 24. The transmission electrode 22 is disposed in the region 90. The receiving electrode 24 is disposed in the region 40. The dummy pattern disposed between the comb tooth portion of the transmission electrode 22 and the comb tooth portion of the reception electrode 24 is disposed in the region 50 between the

regions

40 and 90.

As shown in FIG. 3, the conductive thin wires 11 are arranged in a net shape having a plurality of meshes 19. The plurality of meshes 19 are connected to each other, and include a plurality of meshes 49 located in the region 40, a plurality of meshes 59 located in the region 50, and a plurality of meshes 39 located in the separation unit 30. The plurality of thin conductive wires 11 include a plurality of thin conductive wires 41 located in the region 40 so as to define a plurality of meshes 49 and a plurality of thin conductive wires 51 located in the region 50 so as to define a plurality of meshes 59. . In the region 40, the conductive thin wires 41 (11) are arranged in a net shape having a plurality of meshes 49. In the region 50, the conductive thin wires 51 (11) are arranged in a net shape having a plurality of meshes 59. The width of the thin conductive wire 11 is, for example, 5 μm or less, and preferably about 2 μm. The conductive thin wire 11 is formed of a conductive material such as a metal such as copper. In the embodiment, the mesh 19 has a rhombus shape.

The

regions

40 and 50 are separated from each other by the separation unit 30, and the

regions

50 and 90 are separated from each other by the separation unit 100. The

separation parts

30 and 100 extend linearly.

FIG. 4A is an enlarged view of the touch sensor 501 shown in FIG. 3, and shows a region A2. In a plan view viewed from a direction D11 (see FIG. 1B) perpendicular to the arrangement surface 10P, the portion of the separation portion 30 in the region A2 has an L shape. The region 40 has an edge line 30 A that faces the separation portion 30. The region 50 has an edge line 30 B that faces the separation part 30 and faces the edge line 30 A via the separation part 30.

The separation unit 30 will be further described. The separation part 30 between the

regions

40 and 50 includes a missing pattern part 45 which is a part of the rhomboid side 59A of the mesh 59 and the conductive thin wire 11 is missing. That is, the thin conductive wire 11 is not disposed in the missing pattern portion 45. The plurality of missing pattern portions 45 are arranged in a straight line in plan view so as to constitute the separation portion 30.

The plurality of conductive thin wires 41 includes a plurality of edge thin wires 43 each having a plurality of ends 43P located on the edge wire 30A. The plurality of conductive thin wires 51 include a plurality of edge thin wires 53 each having a plurality of ends 53P located on the edge line 30B. In the region 40, a portion 47 of the conductive thin wire 41 (11) which is a part of the rhomboid side 59A of the mesh 39 is disposed. The portion 47 of the thin conductive wire 41 (11) includes an end 43P on the edge line 30A. In the region 50, a portion 52 that is a part of the conductive thin wire 51 (11) that is a part of the rhomboid side 59A of the mesh 39 is disposed. The portion 52 of the thin conductive wire 51 (11) includes an end 53P on the edge line 30B. The side 39A of the mesh 39 includes a missing pattern portion 45 that is a straight line connecting the conductive thin wire 41, that is, the end 43P of the edge thin wire 43, to the conductive thin wire 51, that is, the end 53P of the edge thin wire 53. That is, the paired

portions

47 and 52 are arranged on the same straight line with the corresponding missing pattern portion 45 interposed therebetween, and constitute one rhombus side 59A including the missing pattern portion 45. As described above, the separation portion 30 includes the missing pattern portion 45 in which the thin conductive wire 11 disposed between the end 43P of the region 40 on the separation portion 30 side and the end 53P of the region 50 on the separation portion 30 side is missing.

The

portions

47 and 52 arranged via the missing pattern portion 45 are not connected in a direct current manner. In order to obtain a configuration not connected in a direct current manner, for example, the conductive thin wire 11 is partially removed and divided in one side 59A, or a portion where the conductive thin wire 11 is not arranged in one side 59A is provided. . In the embodiment, the mesh 19 has a diamond-shaped opposing inner angle AG1 of 60 °, and the other opposing inner angle AG2 is 120 °. The longer longitudinal diagonal length L19 of the diamond shape is 200 μm.

In addition, if the missing pattern portion 45 is provided at the intersection of the plurality of sides 59A of the mesh 59, a range in which the conductive thin wire 11 does not exist easily occurs. In this case, since the missing pattern portion 45 is easily visible, it is desirable to provide the missing pattern portion 45 at a point in the side 59A excluding the intersection, that is, both ends of the side 59A.

As shown in FIG. 4A, the L-shaped lower straight portion of the separation portion 30 has a straight shape along a direction D101 parallel to the left-right direction on the paper surface. That is, the lower straight line portion is provided by arranging the same portion 47 at the end position of the region 40 and arranging the same portion 52 at the end portion position of the region 50. In other words, a plurality of missing pattern portions 45 are provided on a single straight line with respect to the long diagonal of the rhombus. 4A is also formed by arranging a plurality of missing pattern portions 45 on a straight line along a direction D102 parallel to the vertical direction of the paper surface. Is done.

In the vicinity of the missing pattern portion 45, a corresponding independent thin line 60 (15) is arranged. The independent thin wire 60 has a linear shape and is composed of the same conductive thin wire as the

portions

47 and 52 of the conductive thin wire 11. That is, the independent thin wire 60 is made of the same material as the portion 47 and the portion 52 and has the same line width.

4B is a cross-sectional view taken along line 4B-4B of the touch sensor 501 shown in FIG. 4A. As shown in FIG. 4B, both the conductive thin wires 11 (41) and the independent thin wires 15 (60) are provided on the surface 10 A that is the arrangement surface 10 P of the base material portion 10.

FIG. 4C is an enlarged view of the touch sensor 501 shown in FIG. 4A and shows a missing pattern portion 45. The independent thin wire 60 is disposed at a position that is galvanically isolated from the

portions

47 and 52. In other words, the independent thin line 60 is located at a position shifted laterally in parallel with the adjacent position with respect to the missing pattern portion 45 formed of a straight line between the paired

portions

47 and 52 provided with the missing pattern portion 45. Has been placed. It is desirable that the independent thin line 60 be arranged so that the central position 60C in the length direction of the independent thin line 60 is aligned with the vertical line 45L passing through the central position 45C of the missing pattern portion 45. The independent thin line 60 may be arranged so as to be shifted from the missing pattern part 45 in a parallel relationship in a fixed direction as shown in FIG. 4A. 45 may be arranged.

The independent thin line 60 compensates for the area ratio, which is the ratio of the area of the missing pattern portion 45 where the conductive thin line 11 is not disposed to the area of the entire touch panel 501, and sets the length and installation position in consideration of diffraction. For example, when the length L45 of the missing pattern portion 45 is 10 μm, the independent thin line 60 having a length L60 of about 11 μm is separated from the missing pattern portion 45 by a distance M45 (about 10 μm) of the length L45 of the missing pattern portion 45. Arranged in parallel.

The missing pattern portion 45 has a length L45. The independent thin wire 60 (15) has a length L60. The independent fine wire 60 (15) is separated from the

ends

43P and 53P of the edge

fine wires

43 and 53 of the conductive fine wire 11 by distances M43 and M53. The central position 60 C of the independent thin line 60 is located on the perpendicular 45 L of the missing pattern portion 45 that passes through the central position 45 C of the missing pattern portion 45.

In order to secure an electrical insulation state between the

portions

47 and 52 in the separation portion 30, it is desirable that the missing pattern portion 45 has a length L45 of 5 μm or more. The length L45 is more preferably set to about 10 μm in consideration of a margin. The independent thin wires 60 are preferably arranged at positions M43 and M53 that are 5 μm or more away from the

portions

47 and 52 of the conductive thin wires 11, that is, the

ends

43P and 53P, respectively, but at positions M43 and M53 that are about 10 μm apart. It is more desirable to arrange. Thus, it is desirable that the distances M43 and M53 be equal to or less than the length L45 of the missing pattern portion 45 when viewed from the direction D11 (see FIG. 1B). As shown in FIG. 4B, a groove 10G is formed on the surface 10A of the base material portion 10, and a conductive material is put inside the groove 10G to form the conductive thin wires 11 and the independent thin wires 15. The

portions

47 and 52 and the independent thin wire 60 are disposed in the groove 10G. That is, when the above three members are arranged in the grooves 10G, the partition portion 10H up to the surface 10A of the base material portion 10 is formed by the resin forming the base material portion 10 between the grooves 10G. This is desirable.

In the case where the independent thin wire 60 is arranged at a position away from the missing pattern portion 45, it is desirable that the length L60 of the independent thin wire 60 is set to be slightly longer than the length L45 of the missing pattern portion 45 in consideration of diffraction.

As described above, the separation unit 30 includes the missing pattern portion 45 and the independent thin line 60 arranged according to the missing pattern portion 45. With this configuration, since the independent thin line 60 is arranged corresponding to each missing pattern portion 45, even when the plurality of missing pattern portions 45 are arranged in a straight line, when the touch sensor 501 is visually recognized, it is linear. Visibility of the

edge lines

30A and 30B, that is, the separation part 30, formed of the plurality of missing pattern parts 45 arranged in the line is suppressed. Note that the arrangement of the independent thin lines 60 with the same distance M60 shifted in the same one direction D101 with respect to the missing pattern part 45 also contributes to the suppression of the visual recognition state of the separation part 30.

In the conventional capacitive touch sensor disclosed in Patent Document 1, when the sensor electrode is formed of a conductive thin wire arranged in a net shape, the outer shape of the sensor electrode is defined by a linear separation portion. The separation part is configured by arranging, for example, in a straight line a missing pattern part obtained by partially missing the conductive thin wire in a plan view. Although it is easy to design a linear separation part, in this case, the separation part is easily visible, and visibility through the touch sensor on the display screen of the display device may be impaired.

The touch sensor 501 according to the embodiment includes the separation unit 30 including the

edge lines

30A and 30B in which the missing pattern portions 45 are arranged in a straight line in a plan view. However, by arranging the independent thin lines 60, Visibility can be suppressed. For this reason, when the touch sensor 501 is arrange | positioned ahead of the display screen of a display apparatus, possibility that the visibility of a display screen will be impaired will also be reduced.

In the above description, the missing pattern portion 45 is linearly arranged. However, the

edge lines

30A and 30B of the separation portion 30 are not limited to a straight line in a plan view and may be curved.

Next, the area 50 will be described. In the area 50, dummy patterns are arranged. The mesh 59 that is the basis of the dummy pattern has the same rhombus shape as that of the region 40, and the dummy pattern is located at the center position of each of the four sides 59A of the rhombus with the missing pattern portion 45 and the independent thin line 60 described above.

As described above, the touch sensor 501 contacts the insulating base material portion 10 including the placement surface 10P, the plurality of conductive thin wires 11 provided in the placement surface 10P of the base material portion 10, and the base material portion 10. And a plurality of independent thin wires 15 that are in contact with each other and insulated from the plurality of conductive thin wires 11. The plurality of conductive thin wires 11 are provided so as to form a net shape having a plurality of meshes 19 connected to each other in the arrangement surface 10P. The arrangement surface 10P includes a separation part 30 in which the plurality of conductive thin wires 11 are not arranged, a region 40 having an edge line 30A facing the separation part 30, and a separation part 30 via the separation part 30. And a region 50 having an edge line 30B opposite to the edge line 30A. The plurality of meshes 19 include a plurality of meshes 49 located in the region 40, a plurality of meshes 59 located in the region 50, and a plurality of meshes 39 located in the separation unit 30. The plurality of thin conductive wires 11 include a plurality of thin conductive wires 41 located in the region 40 so as to define a plurality of meshes 49 and a plurality of thin conductive wires 51 located in the region 50 so as to define a plurality of meshes 59. . The plurality of conductive thin wires 41 include a plurality of edge thin wires 43 each having a plurality of ends 43P located on the edge wire 30A. The plurality of conductive thin wires 51 include a plurality of edge thin wires 53 each having a plurality of ends 53P located on the edge line 30B. The plurality of independent thin lines 15 includes a plurality of independent thin lines 60. Of the plurality of edge thin wires 43, an edge thin wire 43 corresponding to each of the independent thin wires 60 of the plurality of independent thin wires 60, and an edge corresponding to each of the individual thin wires 60 of the plurality of edge thin wires 53 The fine line 53 defines a corresponding mesh 39 among the plurality of meshes 39. The plurality of sides 39 A of the plurality of meshes 39 include a plurality of missing pattern portions 45 that are straight lines respectively connecting the plurality of ends 43 P of the plurality of edge thin wires 43 to the plurality of ends 53 P of the plurality of edge thin wires 53. Of the plurality of sides 39 A of the plurality of meshes 39, the corresponding side 39 A of the mesh 39 includes the corresponding missing pattern portion 45 of the plurality of missing pattern portions 45. The corresponding missing pattern portion 45 includes a plurality of ends 43P of the plurality of edge thin wires 43 and a corresponding end 43P of the corresponding edge thin wires 43 to a plurality of ends 53P of the plurality of edge thin wires 53. The corresponding edge thin wire 53 is connected to the corresponding end 53P. Each of the independent thin lines 60 is disposed at a position close to the corresponding missing pattern portion 45. Each of the independent thin lines 60 is disposed closest to the corresponding missing pattern portion 45 among the plurality of missing pattern portions 45. In addition, each of the individual thin wires 60 is disposed closest to one of the corresponding edge

thin wires

43 and 53 among the plurality of conductive thin wires 11, and is disposed second closest to the other.

Each of the independent thin lines 60 extends in parallel to the corresponding missing pattern portion 45 in the vicinity of the corresponding missing pattern portion 45.

The side 39A of the corresponding mesh 39 and each of the independent thin lines 60 extend linearly.

The center position 60C of each of the independent thin lines 60 is located on the perpendicular 45L of the corresponding missing pattern portion 45 passing through the center position 45C of the corresponding missing pattern portion 45.

Each of the independent thin lines 60 is longer than the corresponding missing pattern portion 45.

Each of the independent thin lines 60 is positioned in one direction D101 with respect to the corresponding missing pattern portion 45.

5A is an enlarged view of the touch sensor 501 shown in FIG. 3 and shows a region A3 in the region 50. FIG. FIG. 5B is an enlarged view of the touch sensor 501 shown in FIG. 5A. As shown in FIG. 5A, in the region 50, one side 59 A of the rhombus shape includes two portions 71 made of conductive thin wires and a missing pattern portion 73. The missing pattern portion 73 is a portion where the conductive thin wire between the two portions 71 constituting the side 59A is divided or the conductive thin wire is not disposed. Since the missing pattern portion 73 is arranged at the center position of the side 59A, the two portions 71 constituting one side 59A have substantially the same length.

In the region 50, the plurality of missing pattern portions 73 are arranged so as to be arranged on a straight line extending in the direction D101, and arranged so as to be arranged on a straight line extending in the direction D102 orthogonal to the direction D101. In other words, the plurality of missing pattern portions 73 are arranged in a regular rectangular lattice matrix. Thus, in the region 50, patterns having a plurality of X shapes each constituted by four portions 71 connected to the intersections of the rhomboid sides 59A of the mesh 59 are arranged. In other words, in the region 50, a plurality of X-shaped patterns formed by providing the missing pattern portions 73 on all the sides 59A of the rhombus shape of one mesh 59 are regularly arranged. Thus, if it is the structure which arranged regularly the pattern which does not have the part obstruct | occluded with the electroconductive thin wire 51, the increase in the electrostatic capacitance in the area | region 50 at the time of operation etc. can be reduced, and the sensitivity of the sensor electrode 20 is reduced. Easy to improve.

As in the above-described configuration, linear independent thin lines 80 are arranged corresponding to the missing pattern portions 73. Briefly, the independent fine wire 80 is made of the same conductive fine wire as the portion 71 and is arranged in a DC-insulated manner from the two corresponding portions 71 in the side 59A. In FIG. 5A, the linear independent thin lines 80 are arranged in parallel with each other at positions close to the corresponding missing pattern portions 73. Note that the independent thin line 80 is arranged on the vertical line passing through the center position of the missing pattern portion 73 in the same manner as the independent thin line 60 with the center position in the length direction being aligned. Further, the plurality of independent thin wires 80 are arranged at positions shifted in the same direction with the same dimensions. The independent thin wire 80 may be arranged on the missing pattern portion 73 as long as it is insulated from the portion 71 in a direct current manner.

As described above, the dummy pattern in the region 50 includes the X-shaped pattern including the portion 71 and the independent thin line 80 arranged corresponding to each missing pattern portion 73.

More specifically, in the region 50, for example, a missing pattern portion 73 having a length L73 of 10 μm is provided at the center position of one side 59A of the rhombus shape of the mesh 59, and a length L80 of 11 μm is provided. The independent thin line 80 is disposed at a distance of 10 μm from the missing pattern portion 73 in the right direction of the drawing. That is, the region 50 has a configuration that is substantially the same as that of the separation unit 30 such that the region 50 is in a viewing state that is substantially equivalent to the viewing state of the separation unit 30.

As described above, in the region 50, the plurality of missing pattern portions 73 are arranged in a matrix, and the individual thin lines 80 are arranged corresponding to the missing pattern portions 73. For this reason, similarly to the above-described separation line, even if the plurality of missing pattern portions 73 are arranged in a straight line, they can be suppressed from being visually recognized. For this reason, when the touch sensor 501 is arrange | positioned ahead of the display screen of a display apparatus, possibility that the visibility of a display screen will be impaired will also be reduced.

In the above description, the dummy pattern of the region 50 includes the X-shaped pattern obtained by arranging the missing pattern portions 73 in a matrix and the independent thin lines 80 arranged corresponding to the missing pattern portions 73. The X-shaped pattern may have different external shapes depending on the arrangement state of the missing pattern portion 73. Even in this case, even if the plurality of missing pattern portions 73 are arranged in a straight line, the dummy pattern can be suppressed from being visually recognized by including the independent thin line 80 arranged for each missing pattern portion 73.

In addition, it is desirable that the portion 71 and the independent thin wire 80 are arranged in the groove 10G formed on the surface 10A of the base material portion 10 as in the case of the separation portion 30 described above.

The plurality of independent thin lines 15 further includes a plurality of independent thin lines 80 located in the region 50 when viewed from the direction D11 perpendicular to the arrangement surface 10P. The plurality of conductive thin wires 51 include a plurality of conductive thin wires 74 each having a plurality of ends 74P located on a plurality of sides 59A of the plurality of meshes 59, and a plurality of ends located on a plurality of sides 59A of the plurality of meshes 59. And a plurality of thin conductive wires 75 each having 75P. Of the plurality of conductive thin wires 74, a conductive thin wire 74 corresponding to each of the independent thin wires 80 of the plurality of independent thin wires 80, and a conductive thin wire 75 corresponding to each of the plurality of thin conductive wires 75 corresponding to each of the individual thin wires 80, A corresponding mesh 59 of the plurality of meshes 59 is defined. The plurality of sides 59A of the plurality of meshes 59 include a plurality of missing pattern portions 73 that are straight lines respectively connecting the plurality of ends 74P of the plurality of conductive thin wires 74 to the plurality of ends 75P of the plurality of conductive thin wires 75. Of the plurality of sides 59 A of the plurality of meshes 59, the corresponding side 59 A of the mesh 59 includes the corresponding missing pattern portion 73 of the plurality of missing pattern portions 73. The corresponding missing pattern portion 73 corresponds to the corresponding one of the plurality of ends 75P of the plurality of conductive thin wires 75 from the corresponding end 74P of the corresponding conductive thin wire 74 among the plurality of ends 74P of the plurality of conductive thin wires 74. The conductive wire 75 is connected to the corresponding end 75P. Each of the independent thin lines 80 is disposed at a position close to the corresponding missing pattern portion 73. Each of the independent thin lines 80 is disposed closest to the corresponding missing pattern portion 73 among the plurality of missing pattern portions 73. In addition, each of the individual thin wires 80 is disposed closest to one of the corresponding conductive

thin wires

74 and 75 among the plurality of conductive thin wires 11 and second closest to the other.

Each of the independent thin lines 80 extends in parallel to the corresponding missing pattern portion 73 in the vicinity of the corresponding missing pattern portion 73.

The side 59A of the corresponding mesh 59 and each of the independent thin lines 80 extend linearly.

The central position 80C of each of the independent thin lines 80 is located on the perpendicular 73L of the corresponding missing pattern portion 73 passing through the central position 73C of the corresponding missing pattern portion 73.

Each of the independent thin lines 80 is longer than the corresponding missing pattern portion 73.

Each of the independent thin lines 80 is located in one direction D101 with respect to the corresponding missing pattern portion 73.

The independent thin wire 80 is disposed at a position where it is galvanically insulated from the conductive

thin wires

74 and 75. That is, the independent thin line 80 is a position shifted laterally in a parallel relationship to the adjacent position with respect to the missing pattern part 73 formed of a straight line between the conductive

thin lines

74 and 75 that form a pair of sides provided with the missing pattern part 73. Is arranged. It is desirable that the independent thin line 80 is arranged so that the central position 80C in the length direction of the independent thin line 80 is aligned with the perpendicular 73L passing through the central position 73C of the missing pattern portion 73. 5A, the independent thin wire 80 may be arranged so as to be shifted from the missing pattern portion 73 in a parallel relationship in a certain direction, or if it is insulatively isolated from the conductive

thin wires

74 and 75, the missing pattern. It may be disposed on the portion 73.

The independent thin line 80 compensates for the area ratio which is the ratio of the area of the missing pattern portion 73 where the conductive thin line 11 is not arranged to the area of the entire touch panel 501 and sets the length and the installation position in consideration of diffraction. For example, when the length L73 of the missing pattern portion 73 is 10 μm, the independent thin line 80 having a length L80 of about 11 μm is separated from the missing pattern portion 73 by a distance M73 (about 10 μm) of the length L73 of the missing pattern portion 73. Arranged in parallel.

The missing pattern portion 73 has a length L73. The independent thin wire 80 (15) has a length L80. The independent thin wire 80 (15) is separated from the

ends

74P and 75P of the conductive

thin wires

74 and 75 by distances M74 and M75, respectively. The central position 80C of the independent thin line 80 is located on the perpendicular 73L of the missing pattern portion 73 that passes through the central position 73C of the missing pattern portion 73.

In order to secure an electrical insulation state between the conductive

thin wires

74 and 75, it is desirable that the missing pattern portion 73 has a length L73 of 5 μm or more. The length L73 is more preferably set to about 10 μm in consideration of a margin. The individual thin wires 80 are preferably arranged at positions separated by distances M74 and M75 of 5 μm or more from the

ends

74P and 75P of the conductive

fine wires

74 and 75, respectively, but are arranged at positions separated by distances M74 and M75 of about 10 μm. desirable. As described above, it is desirable that the distances M74 and M75 are not more than the length L73 of the missing pattern portion 73 when viewed from the direction D11 (see FIG. 1B). More desirably, as shown in FIG. 4B, a groove 10G is formed on the surface 10A of the base member 10, and the conductive

thin wires

74 and 75 and the independent thin wires 80 are arranged inside the groove 10G. That is, when the above three members are arranged in the grooves 10G, the partition portion 10H up to the surface of the base material portion 10 is formed and arranged between the grooves 10G with the resin forming the base material portion 10. This is desirable.

In the case where the independent thin wire 80 is disposed at a position away from the missing pattern portion 73, it is desirable that the length L80 of the independent thin wire 80 is set to be slightly longer than the length L73 of the missing pattern portion 73 in consideration of diffraction.

FIG. 6A is an enlarged view of the touch sensor 501 shown in FIG. 3, and shows a region A4. FIG. 6B is an enlarged view of the touch sensor 501 shown in FIG. 6A.

The region 50 further has an edge line 100B. The arrangement surface 10P includes a separation portion 100 that faces the edge line 100B of the region 50, and a region 90 that has the edge line 100A that faces the separation portion 100 and faces the edge line 100B via the separation portion 100. It has further. A plurality of thin conductive wires 11 are not arranged in the separation unit 100. The plurality of meshes 19 further include a plurality of meshes 99 located in the region 90 and a plurality of meshes 109 located in the separation unit 100. The plurality of thin conductive wires 11 further include a plurality of thin conductive wires 91 located in the region 90 so as to define a plurality of meshes 99. The plurality of conductive thin wires 91 includes a plurality of edge thin wires 93 each having a plurality of ends 93P located on the edge line 100A. The plurality of conductive thin wires 51 include a plurality of edge thin wires 113 each having a plurality of ends 113P located on the edge line 100B. The plurality of independent thin lines 15 further include a plurality of independent thin lines 85. Of the plurality of edge thin wires 93, the edge thin wire 93 corresponding to each of the plurality of independent thin wires 85 and the edge corresponding to each of the plurality of edge thin wires 113 corresponding to each of the individual thin wires 85. The fine line 113 defines a corresponding mesh 109 among the plurality of meshes 109. The plurality of sides 109A of the plurality of meshes 109 include a plurality of missing pattern portions 115 that are straight lines respectively connecting the plurality of ends 93P of the plurality of edge thin wires 93 to the plurality of ends 113P of the plurality of edge thin wires 113. Of the plurality of sides 109 A of the plurality of meshes 109, the corresponding side 109 A of the mesh 109 includes the corresponding missing pattern portion 115 of the plurality of missing pattern portions 115. The corresponding missing pattern portion 115 includes a plurality of ends 93P of the plurality of edge thin wires 93 and a plurality of ends 113P of the plurality of edge thin wires 113 from the corresponding ends 93P of the corresponding edge thin wires 93. The corresponding edge fine wire 113 is connected to the corresponding end 113P. Each of the independent thin lines 85 is disposed at a position close to the corresponding missing pattern portion 115. Each of the independent thin lines 85 is disposed closest to the corresponding missing pattern portion 115 among the plurality of missing pattern portions 115. Each of the individual thin wires 85 is disposed closest to one of the corresponding edge

thin wires

93 and 113 among the plurality of conductive thin wires 11 and second closest to the other.

All of the plurality of edge thin wires 93 are insulated from the plurality of edge thin wires 113.

Each of the individual thin lines 85 extends close to the corresponding missing pattern portion 115 and parallel to the corresponding missing pattern portion 115.

The side 109A of the corresponding mesh 109 and each of the independent thin lines 85 extend linearly.

The center position 85C of each of the independent thin lines 85 is located on the perpendicular 115L of the corresponding missing pattern portion 115 passing through the center position 115C of the corresponding missing pattern portion 115.

Each of the independent thin lines 85 is longer than the corresponding missing pattern portion 115.

Each of the independent thin lines 85 is located in one direction D101 with respect to the corresponding missing pattern portion 115.

The independent thin wire 85 is disposed at a position where it is galvanically isolated from the edge

thin wires

93 and 113. That is, the independent thin line 85 is shifted laterally in a parallel relationship to the adjacent position with respect to the missing pattern part 115 formed by a straight line between the edge

thin lines

93 and 113 that form a pair of sides provided with the missing pattern part 115. Placed in position. It is desirable that the independent thin line 85 is arranged so that the central position 85C in the length direction of the independent thin line 85 is aligned with the vertical line 115L passing through the central position 115C of the missing pattern portion 115. The independent thin wire 85 may be arranged so as to be shifted from the missing pattern portion 115 in a parallel relationship in a certain direction as shown in FIG. 6A, or it may be missing if it is in a DC-insulated state from the edge

thin wires

93 and 113. You may arrange | position on the pattern part 115. FIG.

The independent thin wire 85 compensates for the area ratio which is the ratio of the area of the missing pattern portion 115 where the conductive thin wire 11 is not arranged to the area of the entire touch panel 501 and sets the length and the installation position in consideration of diffraction. For example, when the length L115 of the missing pattern portion 115 is 10 μm, the independent thin line 85 having a length L85 of about 11 μm is separated from the missing pattern portion 115 by a distance M115 (about 10 μm) of the length L115 of the missing pattern portion 115. Arranged in parallel.

The missing pattern portion 115 has a length L115. The independent thin wire 85 (15) has a length L85. The independent thin wire 85 (15) is separated from the

ends

93P and 113P of the edge

thin wires

93 and 113 of the conductive thin wire 11 by distances M93 and M113. The central position 85C of the independent thin line 85 is located on the perpendicular 115L of the missing pattern portion 115 passing through the central position 115C of the missing pattern portion 115.

In the separation part 100, it is desirable that the missing pattern part 115 has a length L115 of 5 μm or more in order to ensure an electrical insulation state between the edge

thin wires

93 and 113. The length L115 is more preferably set to about 10 μm in consideration of a margin. The independent thin wires 85 are preferably arranged at positions M93 and M113 that are 5 μm or more away from the

ends

93P and 113P of the edge

thin wires

93 and 113 of the conductive thin wires 11, but are separated by distances M93 and M113 of about 10 μm, respectively. It is more desirable to place it in position. As described above, it is desirable that the distances M93 and M113 are not more than the length L115 of the missing pattern portion 115 when viewed from the direction D11 (see FIG. 1B). More desirably, as shown in FIG. 4B, a groove is formed on the surface 10A of the base material portion 10, and the edge

thin wires

93 and 113 and the independent thin wire 85 are arranged inside the groove 10A. That is, when the above three members are arranged in the grooves 10G, the partition portion 10H up to the surface 10A of the base material portion 10 is formed by the resin forming the base material portion 10 between the grooves 10G. This is desirable.

In the case where the independent thin wire 85 is arranged at a position away from the missing pattern portion 115, it is desirable that the length L85 of the independent thin wire 85 is set to be slightly longer than the length L115 of the missing pattern portion 115 in consideration of diffraction.

In the above, the mesh 19 has a rhombus shape. The interior angle of the rhombus shape may be other than the above. The mesh 19 may have a rectangular shape or a polygonal shape other than a rectangular shape. Furthermore, the mesh 19 may have a shape obtained by combining a plurality of shapes.

The detailed configuration of the touch sensor 501 is not limited to the above configuration. For example, the transmitting electrode 22 is disposed on the surface 10A of the base material portion 10 and the receiving electrode 24 is disposed on the surface 10B of the same base material portion, or another base material portion having the transmitting electrode 22 and another receiving electrode 24 is provided. The base material part may be bonded.

FIG. 7A is a plan view of another touch sensor 502 according to the embodiment. 7B is a cross-sectional view taken along line 7B-7B of touch sensor 502 shown in FIG. 7A. 7A and 7B, the same reference numerals are assigned to the same portions as those of the touch sensor 501 shown in FIGS. 1A to 6B. The touch sensor 502 includes an insulating base material part 210 instead of the insulating base material part 10. The base material part 210 is made of the same material as the base material part 10 and includes a layer 210A having surfaces 210AA and 210AB opposite to each other and a layer 210B having surfaces 210BA and 210BB opposite to each other. The surface 210AB of the layer 210A is provided on the surface 210BA of the layer 210B. The surface 210BA of the layer 210B functions as the arrangement surface 10P on which the conductive thin wires 11 are arranged. The surface 210AA of the layer 210A functions as the arrangement surface 10Q on which the independent thin wires 15 are arranged. The placement surface 10Q is parallel to the placement surface 10P.

The base material part 210 includes an arrangement surface 10Q different from the arrangement surface 10P. The plurality of independent thin wires 15 are provided in the arrangement surface 10Q.

The plurality of edge thin wires 43, the plurality of edge thin wires 53, and the plurality of independent thin wires 15 define a plurality of meshes 39 when viewed from the direction D11 perpendicular to the arrangement surface 10P.

When viewed from the direction D11 perpendicular to the arrangement surface 10P, each of the independent thin lines 60 overlaps the corresponding missing pattern portion 45. That is, each of the independent thin lines 15 is arranged so as to be shifted from the corresponding missing pattern part 45 by the same distance M115 in the opposite direction of the same one direction D11. With this configuration, the missing pattern portion 45 and the separation portion 30 are less visible.

In the touch sensor 502, each of the individual thin lines 15 may be arranged at the same distance in the same direction D101 with respect to the corresponding missing pattern portion 45 within the arrangement surface 10Q.

DESCRIPTION OF SYMBOLS 10 Base part 11 Conductive thin wire 15 Independent thin wire 19 Mesh 20 Sensor electrode 22 Transmission electrode 24 Reception electrode 30 Separation part (1st separation part)
30A edge line (first edge line)
30B Edge line (second edge line)
39 mesh (third mesh)
40 regions (first region)
41 Conductive wire (first conductive wire)
43 Edge fine wire (first edge fine wire)
45 Missing pattern part (first missing pattern part)
49 mesh (first mesh)
50 regions (second region)
51 Conductive wire (second conductive wire)
53 Edge fine wire (second edge fine wire)
59 mesh (second mesh)
60 Independent thin wire (first independent thin wire)
73 Missing pattern part (second missing pattern part)
74 Thin conductive wire (third thin conductive wire)
75 thin conductive wire (fourth thin conductive wire)
80 Independent thin line (second independent thin line)
85 Independent thin wire (third independent thin wire)
90 regions (third region)
91 Conductive thin wire (5th conductive thin wire)
93 Edge fine wire (third edge fine wire)
99 mesh (4th mesh)
100 Separation part (second separation part)
100A edge line (fourth edge line)
100B edge line (third edge line)
109 mesh (5th mesh)
113 Edge fine wire (4th edge fine wire)
115 missing pattern part (third missing pattern part)
501,502 Touch sensor

Claims

An insulating base material portion including a first arrangement surface;
A plurality of conductive thin wires provided in the first arrangement surface of the base material portion;
A plurality of independent fine wires that are in contact with the base material part and insulated from the plurality of conductive fine wires, and having a plurality of first independent fine wires;
With
The first arrangement surface includes a first separation portion where the plurality of conductive thin wires are not arranged, a first region having a first edge line facing the first separation portion, and the first A second region having a second edge line facing the first separation part and facing the first edge line through the first separation part;
The plurality of conductive thin wires include a plurality of first conductive thin wires located in the first region and a plurality of second conductive thin wires located in the second region,
The plurality of first conductive wires includes a plurality of first edge wires each having a plurality of first ends located at the first edge wire,
The plurality of second conductive wires include a plurality of second edge wires each having a plurality of second ends located at the second edge wire,
A plurality of first missing pattern portions that are straight lines respectively connecting the plurality of first ends of the plurality of first edge thin lines to the plurality of second ends of the plurality of second edge thin lines. Including
The plurality of first independent thin lines are touch sensors arranged at positions close to the plurality of first missing pattern portions.
2. The touch sensor according to claim 1, wherein the plurality of first independent thin lines extend in parallel to the plurality of first missing pattern portions in proximity to the plurality of first missing pattern portions, respectively.
The center position of each of the plurality of first independent thin lines is located on each perpendicular line of the plurality of first missing pattern portions passing through the center position of the plurality of first missing pattern portions. Touch sensor as described in.
4. The touch sensor according to claim 1, wherein the plurality of first independent thin lines are longer than the plurality of first missing pattern portions.
5. The touch sensor according to claim 1, wherein the plurality of first independent thin lines are respectively positioned in one direction with respect to the plurality of first missing pattern portions.
The plurality of conductive thin wires are arranged in a net shape so as to have a plurality of meshes in the first arrangement surface of the base material portion,
The plurality of meshes include a plurality of first meshes located in the first region, a plurality of second meshes located in the second region, and a plurality of second meshes located in the first separation unit. 3 meshes,
The plurality of first conductive wires define the plurality of first meshes;
The plurality of second conductive wires define the plurality of second meshes;
Of the plurality of first edge thin lines, a first edge thin line corresponding to each first independent thin line of the plurality of first independent thin lines, and a plurality of the second edge thin lines A second edge fine line corresponding to each of the first independent fine lines defines a corresponding third mesh of the plurality of third meshes;
The plurality of sides of the plurality of third meshes each include the plurality of first missing pattern portions,
The corresponding third mesh side of the plurality of sides of the plurality of third meshes includes a corresponding first missing pattern portion of the plurality of first missing pattern portions,
The corresponding first missing pattern portion is formed from the first end corresponding to the corresponding first edge thin line among the plurality of first ends of the plurality of first edge thin lines. To the corresponding second end of the corresponding second edge thin line of the plurality of second ends of the second edge thin line of
2. The touch sensor according to claim 1, wherein each of the first independent thin lines is disposed at a position close to the corresponding first missing pattern portion.
The touch sensor according to claim 6, wherein each of the first independent thin lines extends in parallel with the corresponding first missing pattern portion in proximity to the corresponding first missing pattern portion.
The touch sensor according to claim 7, wherein the side of the corresponding third mesh and each of the first independent thin lines extend linearly.
The center position of each said 1st independent fine line is located on the perpendicular of the said corresponding 1st missing pattern part which passes the center position of the said corresponding 1st missing pattern part. Touch sensor.
10. The touch sensor according to claim 7, wherein each of the first independent thin lines is longer than the corresponding first missing pattern portion.
11. The touch sensor according to claim 6, wherein each of the first independent thin lines is positioned in one direction with respect to the corresponding first missing pattern portion.
The plurality of independent thin lines further includes a plurality of second independent thin lines located in the second region when viewed from the direction perpendicular to the first arrangement surface,
The plurality of second conductive thin wires include a plurality of third conductive thin wires each having a plurality of third ends located on a plurality of sides of the plurality of second meshes, and the plurality of second meshes. A plurality of fourth conductive thin wires each having a plurality of fourth ends located on the plurality of sides of
Of the plurality of third conductive thin lines, a third conductive thin line corresponding to a second independent thin line of each of the plurality of second independent thin lines, and the plurality of fourth conductive thin lines A fourth conductive thin line corresponding to each second independent thin line defines a corresponding second mesh of the plurality of second meshes;
The plurality of sides of the plurality of second meshes are straight lines connecting from the plurality of third ends of the plurality of third conductive thin wires to the plurality of fourth ends of the plurality of fourth conductive thin wires, respectively. A plurality of second missing pattern portions that are
The side of the corresponding second mesh among the plurality of sides of the plurality of second meshes includes a corresponding second missing pattern portion of the plurality of second missing pattern portions,
The corresponding second missing pattern portion is formed from the third end corresponding to the corresponding third conductive thin wire among the plurality of third ends of the plurality of third conductive thin wires. To the corresponding fourth end of the corresponding fourth conductive wire of the plurality of fourth ends of the four conductive wires;
The touch sensor according to claim 6, wherein each of the second independent thin lines is disposed at a position adjacent to the corresponding second missing pattern portion.
The second region further comprises a third edge line;
The first disposition surface includes a second separation portion facing the third edge line of the second region, and facing the second separation portion and via the second separation portion. And a third region having a fourth edge line opposed to the third edge line,
The plurality of thin conductive wires are not arranged in the second separation part,
The plurality of meshes further include a plurality of fourth meshes located in the third region, and a plurality of fifth meshes located in the second separation unit,
The plurality of conductive thin wires further includes a plurality of fifth conductive thin wires positioned in the third region so as to define the plurality of fourth meshes,
The plurality of fifth conductive wires include a plurality of third edge wires each having a plurality of fifth ends located at the fourth edge wire,
The plurality of second conductive wires include a plurality of fourth edge wires each having a plurality of sixth ends located at the third edge wire,
The plurality of independent thin lines further includes a plurality of third independent thin lines,
Of the plurality of third edge thin lines, a third edge thin line corresponding to each third independent thin line of the plurality of third independent thin lines, and a plurality of the fourth edge thin lines A fourth edge thin line corresponding to each of the third independent thin lines defines a corresponding fifth mesh of the plurality of fifth meshes;
The plurality of sides of the plurality of fifth meshes are respectively from the plurality of fifth ends of the plurality of third edge thin lines to the plurality of sixth ends of the plurality of fourth edge thin lines. Including a plurality of third missing pattern portions that are connecting straight lines,
The side of the corresponding fifth mesh among the plurality of sides of the plurality of fifth meshes includes a corresponding third missing pattern portion of the plurality of third missing pattern portions,
The corresponding third missing pattern portion is formed from the fifth end corresponding to the corresponding third edge thin line among the plurality of fifth ends of the plurality of third edge thin lines. To the corresponding sixth end of the corresponding fourth edge thin line of the plurality of sixth ends of the fourth edge thin line of
The touch sensor according to claim 12, wherein each of the third independent thin lines is disposed at a position adjacent to the corresponding third missing pattern portion.
The touch sensor according to claim 13, wherein any of the plurality of second edge thin lines is insulated from the plurality of fourth edge thin lines.
The touch sensor according to claim 1, wherein the plurality of independent thin wires are made of a conductive material.
The touch sensor according to claim 15, wherein the plurality of independent thin wires are formed of the same material as the plurality of conductive thin wires.
The touch sensor according to claim 1, wherein the plurality of independent thin lines are provided in the first arrangement surface.
The base portion includes a second arrangement surface different from the first arrangement surface,
The touch sensor according to claim 1, wherein the plurality of independent thin lines are provided in the second arrangement surface.
19. The touch sensor according to claim 18, wherein each of the first independent thin lines overlaps the corresponding first missing pattern portion when viewed from the direction perpendicular to the first arrangement surface.