TWI791169B - Touch panel device - Google Patents

Abstract

An objective of the present invention is to maintain or improve the accuracy of touch position detection in touch panels. A touch panel device of the present invention includes: a detection area composed of a pair of a transmission electrode and a reception electrode; a transmission wiring which is connected to the transmission electrode and extends in a first direction from a connection part with the detection area; and a receiving wiring which is connected to the reception electrode; when one of a plurality of the detection areas is set as a reference unit, one or more detection areas are at least continuously arranged from the reference unit in the opposite direction of the first direction; in addition, on a second direction side orthogonal to the first direction with respect to the reference unit, the transmission wiring which is connected to the reference unit, and one or more transmission wirings corresponding to one or more of the detection areas that are arranged in the opposite direction from the reference unit are arranged in parallel; and the one or more transmission wirings arranged in parallel have a uniform wiring width at a part extending in the opposite direction from the position where the transmission wrings are arranged in the second direction with respect to the reference unit.

Description

touch panel device

The present invention relates to a touch panel device, in particular to a technology of wiring structure of a touch panel.

Various technologies are known for touch panels. In the following patent document 1, a method of simultaneously performing two sets of (a pair of transmission signal lines and a pair of reception signal lines) signal lines (electrodes) detection (sensing) is disclosed. Detection of touch operation position, thereby improving the detection technology of resolution.

In addition, Patent Document 2 below discloses a so-called single layer electrode structure in which no intersecting portion of electrodes is provided in electrode wiring in the X and Y directions.

[Prior Art Literature]

[Patent Document]

Patent Document 1: Japanese Patent Laid-Open No. 2014-219961

Patent Document 2: Japanese Patent Laid-Open No. 2010-182277

In touch panels, it is very important to maintain or improve the accuracy of touch position detection. In the case of a capacitive touch panel, during scanning, the change or difference of the signal voltage from the signal line corresponding to the capacitance change caused by the touch panel is detected, thereby detecting the touch operation. Location. At this time, the wiring structure in the touch panel may affect the detection accuracy of the change or difference of the signal voltage from the signal line corresponding to the capacitance change.

Therefore, in the present invention, the purpose is to maintain or improve the detection accuracy of the touch position in the touch panel through the ingenuity of the wiring design.

The touch panel device of the present invention includes: a detection area composed of a pair of transmission electrodes and a reception electrode; a transmission wiring connected to the transmission electrodes and extending in a first direction from a connection portion connected to the detection area. setting; and receiving wiring, connected to the aforementioned receiving electrodes; when one of the plurality of aforementioned detection areas is used as a reference cell (cell), at least from the aforementioned reference cell toward the opposite direction of the aforementioned first direction, there are continuously arranged One or a plurality of the aforementioned detection areas are arranged side by side with respect to the aforementioned reference unit on the side of the second direction perpendicular to the aforementioned first direction: a transmission line connected to the aforementioned reference unit; One or a plurality of transmission wires of one or a plurality of the aforementioned detection areas arranged in the opposite direction; the ratio of the one or a plurality of the aforementioned transmission wires arranged in parallel is closer to the aforementioned opposite direction than the position of the aforementioned reference unit arranged in the aforementioned second direction The wiring width of the extended part is equal.

Thereby, the wiring width of the transmission wiring arranged in the second direction with respect to the reference cell and the wiring width of the transmission wiring arranged in the second direction with respect to the detection region located in the opposite direction to the first direction than the reference cell are equal to equals.

In the touch panel device of the present invention described above, the reference unit may be considered to be the detection region 50 as a reference for detecting the center of gravity value of the electrostatic capacitance.

The detection of the touch position is performed by detecting the center of gravity value of the electrostatic capacitance so that a position with a resolution higher than the density of the detection area can be detected, and the detection area that becomes the basis for detection of the center of gravity value is assumed to be referred to here as the reference unit.

In the touch panel device of the present invention described above, the reference unit can be considered as a reference when specifying the wiring width of the transmission wiring from the reference unit to the opposite direction so that the resistance value of the transmission wiring becomes a predetermined value. detection area.

Thereby, for one or a plurality of transmission lines arranged in parallel, the resistance value of the transmission lines is set to be a predetermined value, and the position extending in the direction opposite to the first direction relative to the reference cells arranged in the second direction is set. The wiring width of the part set,.

In the touch panel device of the present invention described above, it is conceivable that the wiring widths of one or a plurality of transmission wirings arranged in parallel are equal.

Thereby, the wiring width of the portion extending in the direction opposite to the first direction from the position arranged in the second direction with respect to the reference cells is further in the first direction than the position arranged in the second direction with respect to the reference cells. The wiring width of the transmission wiring of the extended part becomes the same.

In the touch panel device of the present invention described above, it is conceivable that the electrode width in the wiring adjacent portion of the transmission electrode in the detection region is larger than the wiring width of the adjacent transmission wiring.

That is, the wiring width of the portion of the transmission wiring adjacent to the wiring adjacent portion of the transfer electrode extending in the direction opposite to the first direction than the position of the reference cell arranged in the second direction is greater than that of the wiring adjacent to the transfer electrode. The electrode width in the section is narrower.

In the touch panel device of the present invention described above, it is conceivable that the one or a plurality of transmission lines arranged in parallel are set to have a line width such that the line resistance value thereof becomes a value of 150 kΩ or less.

That is, for one or a plurality of transmission lines arranged in parallel, the line width of the part extending in the direction opposite to the first direction than the position of the reference cell arrayed in the second direction is set so that the resistance value of the transmission line becomes Values below 150kΩ.

In the touch panel device of the present invention described above, it is conceivable to arrange the ground electrode adjacent to the second direction side of the transmission wiring. By this, the residual charge on the second direction side of the transfer wiring is discharged through the ground electrode.

According to the present invention, the detection accuracy of the touch position in the touch panel can be maintained or improved.

1: Touch panel device

2: Touch panel

3: Touch panel driver

4: Sensor IC

5: MCU

6: Product side MCU

21,21-1~21-n: transmission signal line

22,22-1~22-m: receiving signal line

31: Touch panel side connection terminal

32: Connecting terminal on the product side

41: Transmission circuit

42: Receive circuit

43: Multiplexer

44:Interface register circuit

45: Power circuit

50,50A: detection area

51: Transmission electrode

51a: the first ㄈ-shaped part

51b: first protrusion

51c: second protrusion

51d: Wiring adjacent part

51e: upper end

51f: lower end

52: Receive electrode

52a: the second ㄈ-shaped part

52b: third protrusion

52c: Fourth protrusion

52d: lower end

52e: upper end

60:Dummy electrode group

70a~70e, 70A~70E: transmission wiring

71: end

80: Receive wiring

90,93: remaining area

100: Substrate

110: sensor unit

110a~110e, 100A~100E, 110X, 110Y, 110Z: sensor unit

120, 120X, 120Y: sensor unit group

411, 412: drive

421: Comparator

422: Reference Capacitance Department

423: switch

424: Capacitance part for measurement

425: switch

426: Calculation Control Department

A1, A2: position

AVCC, AVCC1, AVCC2: drive voltage

C22, C23, C32, C33: capacitance

L1, L2, L3, L5, L6, L7: wiring width

L4, L8: electrode width

R+, R-: receive signal

Ta, Ti: terminal

T+, T-: transmit signal

FIG. 1 is a block diagram of a touch panel device according to an embodiment of the present invention.

Fig. 2 is an explanatory diagram of the signal line structure of the touch panel of the embodiment.

Fig. 3 is an explanatory diagram of the detection operation of the implementation type.

Fig. 4 is an explanatory diagram of a single-layer structure of an embodiment.

Fig. 5 is an explanatory diagram of the structure of a sensor cell of the embodiment.

Fig. 6 is an explanatory diagram of a comparative example of the sensor unit structure of the embodiment.

Fig. 7 is an explanatory diagram of a comparative example of the wiring design of the embodiment.

Fig. 8 is a partially enlarged view of a comparative example of the wiring design of the embodiment.

Fig. 9 is a partially enlarged view of a comparative example of wiring design of the embodiment.

Fig. 10 is an explanatory diagram of the wiring design of the embodiment.

Fig. 11 is a partially enlarged view of the wiring design of the embodiment.

Fig. 12 is a partially enlarged view of the wiring design of the embodiment.

Fig. 13 is an explanatory diagram of a modified example of the sensor unit structure of the embodiment.

Embodiments are described below in the following order. In addition, about the structure demonstrated previously, the same code|symbol is attached|subjected hereafter, and description is abbreviate|omitted.

<1. Configuration of touch panel device>

<2. Detect motion>

<3. Single layer structure>

<4. Wiring design of touch panel>

[4-1. Comparison example of wiring design for transmission wiring]

[4-2. Wiring design of transmission wiring in this embodiment]

<5. Modifications>

<6. Summary>

<1. Configuration of touch panel device>

FIG. 1 shows a configuration example of a touch panel device 1 according to an embodiment.

The touch panel device 1 is installed in various machines as a user interface device. Here, various machines are assumed to be, for example, electronic machines, communication machines, information Processing equipment, manufacturing equipment machines, work machines, vehicles, aircraft, construction equipment machines, and machines in other extremely diverse fields. The touch panel device 1 is adopted as an operation input device (device) for user's operation input in these various machine products.

Although a touch panel device 1 and a product-side MCU (Micro Control Unit, micro control unit) 6 are shown in FIG. By. The touch panel device 1 performs an operation of supplying the product-side MCU 6 with information for the user's touch panel operation.

The touch panel device 1 has a touch panel 2 and a touch panel driving device 3 .

The touch panel driving device 3 includes a sensor IC (Integrated Circuit, integrated circuit) 4 and an MCU 5 .

This touch panel driving device 3 is connected to the touch panel 2 via the touch panel side connection terminal 31 . The touch panel driving device 3 drives (detects) the touch panel 2 through this connection.

In addition, when mounted on a device as an operation input device, the touch panel drive device 3 is connected to the product-side MCU 6 via the product-side connection terminal 32 . The touch panel driving device 3 transmits the detected operation information to the product-side MCU 6 through this connection.

The sensor IC 4 in the touch panel driving device 3 has a transmission circuit 41 , a reception circuit 42 , a multiplexer (multiplexor) 43 , an interface register circuit 44 , and a power supply circuit 45 .

The transmission circuit 41 of the sensor IC 4 outputs a transmission signal to a terminal in the touch panel 2 selected by the multiplexer 43 . In addition, the receiving circuit 42 receives signals from terminals in the touch panel 2 selected by the multiplexer 43 , and performs required comparison processing and the like.

FIG. 2 is a schematic diagram showing the connection state of the transmission circuit 41 , the reception circuit 42 , the multiplexer 43 and the touch panel 2 .

The touch panel 2 is provided with n transmission signal lines 21 - 1 to 21 - n serving as electrodes on the transmission side on the panel plane forming the touch surface.

In addition, m receiving signal lines 22-1 to 22-m as electrodes on the receiving side are arranged on the panel plane in the same manner.

In addition, when the transmission signal line 21-1. ． ． 21-n. Receiving signal line 22-1. ． ． 22-m, the system is called "transmission signal line 21" and "reception signal line 22".

Transmission signal line 21-1. ． ． 21-n, and receiving signal line 22-1. ． ． The 22-m series may be arranged to cross as shown in the figure, or may be arranged so as not to cause crossing as described in the following embodiments, so as to have a so-called single-layer structure. In either case, the touch operation surface is formed in the range where the transmission signal line 21 and the reception signal line 22 are arranged, and the operation position is detected by capacitance change during touch operation.

Although only a part of the electrostatic capacitance (capacitance C22, C23, C32, C33) generated between the transmission signal line 21 and the reception signal line 22 is illustrated in the figure, the entire touch operation surface exists in the transmission signal line 21. The electrostatic capacitance generated between the signal line 22 and the receiving signal line 22 (for example, the capacitance at the intersection position), and the receiving circuit 42 can detect the position where the capacitance changes due to the touch operation.

The transmission circuit 41 is for the transmission signal line 21-1 selected by the multiplexer 43. ． ． 21-n outputs a transmission signal. In this embodiment, scanning is performed by selecting two adjacent transmission signal lines 21 at each timing by the multiplexer 43 .

The receiving circuit 42 receives signals from the receiving signal line 22-1 selected by the multiplexer 43. ． ． 22-m received signal. In this embodiment, the multiplexer 43 selects two adjacent receiving signal lines 22 at each timing.

The detection operations performed by the transmitting circuit 41 and the receiving circuit 42 will be described later.

Return to Figure 1 for illustration. In the interface register circuit 44 of the sensor IC 4 , various setting information for the transmission circuit 41 , the multiplexer 43 , the reception circuit 42 , and the power supply circuit 45 are written by the MCU 5 . The transmission circuit 41 , the multiplexer 43 , the receiving circuit 42 , and the power supply circuit 45 are respectively controlled by setting information stored in the interface register circuit 44 .

In addition, the interface register circuit 44 is configured to memorize the detection value detected by the receiving circuit 42 (also referred to as “raw value” in the description), and can be obtained by the MCU 5 .

The power supply circuit 45 generates the drive voltage AVCC, and supplies it to the transmission circuit 41 and the reception circuit 42 . Although it will be described later, the transmission circuit 41 applies a pulse using the driving voltage AVCC to the transmission signal line 21 selected by the multiplexer 43 .

In addition, the receiving circuit 42 also applies the drive voltage AVCC to the receiving signal line 22 selected by the multiplexer 43 during the detection operation.

The configuration of the power supply circuit 45 will be described later.

The MCU 5 sets and controls the sensor IC 4 . Specifically, the MCU 5 writes required setting information into the interface register circuit 44 to control the operations of various parts of the sensor IC 4 .

In addition, the MCU 5 obtains the RAW value from the receiving circuit 42 by reading from the interface register circuit 44 . Furthermore, the MCU 5 calculates the center of gravity value using the RAW value, and performs the calculation based on Coordinate calculation of the calculated center-of-gravity value, and processing of transmitting the coordinate value as the user's touch operation position information to the MCU 6 on the product side are performed.

<2. Detect motion>

The detection operation performed by the touch panel device 1 having the above configuration will be described here.

Firstly, the operation of the transmission circuit 41 and the reception circuit 42 on the touch panel 2 will be described with reference to FIG. 3 .

In the figure, two transmission signal lines 21 - 2 , 21 - 3 and two reception signal lines 22 - 2 , 22 - 3 are displayed on the touch panel 2 .

In the case of this embodiment, for the transmission signal line 21 and the reception signal line 22 shown in FIG. control operation detection. In other words, two×two of a pair of transmission signal lines 21 and a pair of reception signal lines 22 are used as a basic unit, and the detection scan is sequentially performed in units of units. In Fig. 3, a unit portion thereof is shown.

The transmission circuit 41 outputs a drive voltage AVCC1 from drivers 411 and 412 to two transmission signal lines 21 (21-2 and 21-3 in the figure). In other words, the transfer signals T+, T− belonging to the outputs of the drivers 411 , 412 are supplied to the transfer signal lines 21 - 2 , 21 - 3 selected by the multiplexer 43 .

In addition, the driving voltage AVCC1 is the driving voltage AVCC itself generated by the power supply circuit 45 of FIG. 1 or a voltage based on the driving voltage AVCC.

At this time, the transmission signal T+ from the driver 411 of the transmission circuit 41 is set to a low level (hereinafter referred to as "L level") during an idle period as shown in the figure. For example, set it to 0V.

Furthermore, it is set to a high level (hereinafter referred to as "H level") during the next active period. At this time, specifically, the driving voltage AVCC1 is applied as a signal at the H level.

In addition, the transfer signal T- from another driver 412 of the transfer circuit 41 is set to the H level during the idle period (application of the drive voltage AVCC1 ), and to the L level during the subsequent operation period.

Here, the idle period is a period for stabilizing the potentials of the reception signals R+, R−, and the operation period is a period for detecting changes in the potentials of the reception signals R+, R−.

During the idle period and the running period, the receiving circuit 42 receives the receiving signals R+, R− from the two receiving signal lines 22 (22-3, 22-2 in the figure) selected by the multiplexer 43.

The receiving circuit 42 includes a comparator 421 , a reference capacitance unit 422 , switches 423 and 425 , a measurement capacitance unit 424 , and an arithmetic control unit 426 .

The received signals R+, R− from the two received signal lines 22 are received by the comparator 421 . The comparator 421 compares the potentials of the received signals R+ and R−, and outputs the comparison result to the calculation control unit 426 at H level or L level.

A driving voltage AVCC2 is applied to one end of the capacitor constituting the reference capacitance unit 422 . The driving voltage AVCC2 is the driving voltage AVCC itself generated by the power supply circuit 45 in FIG. 1 , or a voltage based on the driving voltage AVCC. The other end of the capacitor constituting the reference capacitance unit 422 is connected to the + input terminal of the comparator 421 via the terminal Ta of the switch 423 .

In addition, a drive voltage AVCC2 is applied to one end of the measurement capacitor unit 424 . The other end of the measurement capacitor 424 is connected to the -input terminal of the comparator 421 via the terminal of the switch 425 .

The switches 423 and 425 select the terminal Ti during idle periods. Therefore, the +input terminal (reception signal line 22-3) and -input terminal (reception signal line 22-2) of the comparator 421 are connected to ground during the idle period, and the reception signals R+ and R- are at ground potential.

The switches 423, 425 select the terminal Ta during operation. Therefore, the driving voltage AVCC2 is applied to the +input terminal (reception signal line 22-3) and -input terminal (reception signal line 22-2) of the comparator 421 during operation.

In FIG. 3 , the waveforms of the received signals R+ and R− when the unit is in the non-touch state are shown by solid lines. During the idle period, since the terminals Ti are selected by the switches 423 and 425, the received signals R+ and R− are stabilized at a certain potential (ground potential).

During the operation period, the switches 423 and 425 select the terminal Ta to apply the drive voltage AVCC2 to the reception signal lines 22-3 and 22-2. As a result, the potentials of the reception signals R+ and R− rise by ΔV. In the non-touch state, the potential rise of △V is generated together with the received signals R+ and R−.

On the other hand, on the side of the transmission circuit 41, during the operation period, the transmission signal T+ rises and the transmission signal T- falls as described above. Thereby, when there is a touch operation, the degree of potential rise of the received signals R+ and R− changes.

Assume that when the position A1 that affects the capacitor C22 is touched, the potential of the received signal R− increases by ΔVH as shown by the dotted line during the running period.

In addition, assuming that the position A2 where the capacitor C32 changes is touched, the potential of the received signal R− increases by ΔVL shown by the dotted line during the operation period.

As shown in the above, depending on the position of the touch operation of the unit, the potential variation of the received signal R− will be larger or smaller than the potential variation (ΔV) of the received signal R+.

The comparator 421 compares the received signals R+ and R−.

In addition, it is also possible to output the potential difference itself of the received signal R+ and R- which changes in this way as a RAW value (detection result), but in this embodiment, it is assumed that the receiving circuit 42 is operated by the calculation control unit 426. The setting of the measurement capacitor 424 is changed so that the voltage balance of the received signals R+ and R− is maintained, and the RAW value is obtained.

The calculation control unit 426 performs on/off of the switches 423 and 425 or switches the capacitance value of the measuring capacitor unit 424 according to the setting information written in the interface register circuit 44 . In addition, the output of the comparator 421 is monitored, and the RAW value is calculated in the processing described later. The RAW value calculated by the arithmetic control unit 426 is written into the interface register circuit 44 so that the MCU 5 can obtain it.

<3. Electrode Arrangement Structure of Touch Panel>

The electrode arrangement structure of the touch panel 2 in this embodiment will be described with reference to FIG. 4 and FIG. 5 . In this embodiment, a single-layer electrode structure is adopted as the electrode arrangement structure of the touch panel 2 . FIG. 4 is a schematic diagram showing the electrode arrangement structure of the touch panel 2 .

Hereinafter, the form shown in FIG. 4 will be described as the up, down, left, and right directions. The same is repeated in FIGS. 5 to 12 . In addition, in the claims of the present invention, the first direction indicates the downward direction, the opposite direction of the first direction indicates the upward direction, the second direction indicates the right direction, and the opposite direction of the second direction indicates the left direction.

As shown in FIG. 4 , in the touch panel 2 , a plurality of sensor units 110 are disposed on the substrate 100 and form a sensor pattern as a matrix. In FIG. 4 , for convenience of illustration, an example of an aggregate matrix of sensor units 110 formed on a substrate 100 with seven columns in the left-right direction and seven rows in the vertical direction is shown.

The position touched by a conductor such as a finger can be detected by the change of the capacitance of the sensor unit 110 disposed on the substrate 100 . Here, one sensor unit 110 is equivalent to the intersection of the transmission signal line 21 and the reception signal line 22 in FIG. 2 .

In addition, in this embodiment, for the convenience of description, although the arrangement of the sensor units 110 is described as a matrix with 7 columns in the left and right direction and 7 rows in the up and down direction, the arrangement of the sensor units 110 can be based on The shape and size of the touch panel 2 are designed in various ways.

FIG. 5 shows an example of the structure of the sensor unit 110 disposed on the substrate 100 . In this embodiment, the sensor unit 110X is used for illustration. In addition, for the sake of easy understanding, the intervals between the respective members shown in the drawings are described larger than actual ones.

The sensor unit 110X has a detection area 50 , a dummy electrode group 60 , a plurality of transmission lines 70 , a reception line 80 , and a remaining area 90 .

In the detection area 50, the transmission electrode 51 and the reception electrode 52 are arrange|positioned adjacently.

The transfer electrode 51 has a first U-shaped portion 51a, a first protruding portion 51b, a second protruding portion 51c, and a wiring adjacent portion 51d.

The first U-shaped portion 51a is formed in a U-shape opened on the right side, and the first protruding portion 51b is formed so as to protrude downward from the upper end portion 51e of the first U-shaped portion 51a. The second protruding portion 51c is spaced apart from the left side of the first protruding portion 51b, and faces downward from the first U-shaped portion 51a. Formed in a prominent way. The wiring adjacent portion 51d is formed to protrude upward from the lower end portion 51f of the first U-shaped portion 51a. The transmission wiring 70 is adjacently arranged on the right side of the wiring adjacent portion 51 d , and a gap is provided between the wiring adjacent portion 51 d and the transmission wiring 70 .

The receiving electrode 52 has a second U-shaped portion 52a, a third protruding portion 52b, and a fourth protruding portion 52c.

The second U-shaped portion 52a is formed in a U-shape opened on the left side, and the third protruding portion 52b is formed so as to protrude upward from the lower end portion 52d of the second U-shaped portion 52a. The fourth protruding portion 52c is spaced apart on the right side of the third protruding portion 52b, and is formed to protrude upward from the second U-shaped portion 52a.

The transmission electrode 51 and the reception electrode 52 are arranged in parallel in the order of the second protrusion 51c, the fourth protrusion 52c, and the first protrusion 51b in the right direction from the third protrusion 52b. Thereby, the transmitting electrode 51 and the receiving electrode 52 are formed in one layer on a plane and have a comb shape.

In addition, gaps are respectively provided in adjacent portions of the transmitting electrode 51 and the receiving electrode 52 . As a result, electrostatic capacitance is generated between the transmission electrode 51 and the reception electrode 52 .

In an empty area below the detection area 50, a dummy electrode group 60 is arranged in consideration of an optical appearance. The dummy electrode group 60 is composed of a plurality of dummy electrodes separated from each other.

The dummy electrode group 60 is patterned in a floating state where each dummy electrode is not electrically connected to a voltage source such as a driving circuit and is not connected to a ground or the like.

The dummy electrode group 60 is arranged so as to be separated from the detection region 50 , the transmission line 70 , and the reception line 80 .

The transmission line 70 is a part of the transmission electrode 51 and corresponds to the transmission signal line 21 shown in FIG. 2 . The transmission wiring 70 is arranged adjacent to the right side of the detection area 50, and the end 71 of the transmission wiring 70 is connected to the lower end 51f of the first U-shaped portion 51a (see FIG. 5 ).

The transmission wiring 70 is pulled out from each sensor unit 110 in the vertical direction in each column of the aggregate matrix on the substrate 100 shown in FIG. 4 . The respective transmission lines 70 extend downward and are arranged in parallel so as to be separated from each other (see FIG. 5 ).

In the sensor units 110 at the lower end of each column, the transmission lines 70 are arranged in parallel corresponding to the number of the sensor units 110 arranged in the upward direction, and the transmission lines 70 arranged in the sensor units 110 The number decreases one by one as the sensor units 110 go upward.

Since the number of the transfer wires 70 decreases with the sensor units 110 going upward, the sensor units 110 in the upward direction form the remaining area 90 . In the remaining area 90 , dummy electrodes are arranged in consideration of optical beauty. The dummy electrodes provided on the remaining area 90 are connected to the ground and function as ground electrodes. The ground electrode provided in the remaining area 90 is arranged so as to be separated from the transmission line 70 .

A plurality of transmission wires 70 extending downward from each sensor unit 110 drawn up and down in each column are wired according to the sensor units 110 of the same row in the aggregate matrix on the substrate 100, and through such as The multiplexer 43 shown in FIG. 2 is connected to the transmission circuit 41 .

The transmission circuit 41 can output a transmission signal for a detection operation to the transmission line 70 selected by the multiplexer 43 .

The reception wiring 80 is a part of the reception electrode 52 and corresponds to the reception signal line 22 shown in FIG. 2 .

The reception wiring 80 is arranged on the left side of the detection area 50, and is connected to the upper end portion 52e of the second ℈-shaped portion 52a (see FIG. 5). The reception wiring 80 is arranged so as to be separated from the transmission electrode 51 of the detection region 50 .

The reception wiring 80 is pulled out downward as one wiring common to the reception electrodes 52 of the respective sensor cells 110 in the vertical direction in the column. The receiving wiring 80 drawn downward is connected to the receiving circuit 42 via the multiplexer 43 shown in FIG. 2 .

Thereby, the receiving circuit 42 can receive the receiving signal for the detection operation from the receiving line 80 selected by the multiplexer 43 . Therefore, the position where the capacitance changes due to the touch operation or the like is detected by the receiving circuit 42 .

The sensor unit 110 in this embodiment generally has the same configuration as the above-mentioned sensor unit 110X, although there are some differences in the number or width of the transmission lines 70 and the range of the remaining area 90 .

According to this single-layer structure using the sensor unit 110, no insulating layer is formed to prevent penetration when the transmission electrode 51 and the reception electrode 52 intersect, and capacitance can be generated by arranging them on the same plane.

However, although the sensor unit 110Y in the comparative example has substantially the same configuration as the sensor unit 110X of the present embodiment as shown in FIG. There is a huge difference.

The details of wiring design in the touch panel 2 will be described below.

<4. Wiring design of touch panel>

The wiring design of the touch panel 2 of this embodiment will now be described using FIGS. 7 to 12 . In this embodiment, the ingenuity of wiring design of the transmission wiring 70 is described.

Here, the sensor unit group 120 constituted by five sensor units 110 consecutive in the vertical direction in the set matrix shown in FIG. 4 is extracted as an example of wiring design for description.

[4-1. Comparison example of wiring design for transmission wiring]

A comparative example of wiring design of the transmission wiring 70 in the touch panel 2 will now be described using FIGS. 7 to 9 .

The sensor unit group 120X in the comparative example is as shown in FIG. 7 and is composed of sensor units 110a, 110b, 110c, 110d, and 110e.

The sensor units 110a to 110e are sequentially arranged from the lower end upward, and the transmission wiring 70a is connected to the transmission electrode 51 of the sensor unit 110a, and the transmission line 70a is connected to the transmission electrode 51 of the sensor unit 110b. The transmission line 70b is connected to the transmission electrode 51 of the sensor unit 110c, the transmission line 70c is connected to the transmission electrode 51 of the sensor unit 110d, the transmission line 70d is connected to the transmission electrode 51 of the sensor unit 110e, and the transmission line is connected to the transmission electrode 51 of the sensor unit 110e. Wiring 70e.

The wiring width of the transmission wiring 70 arranged in each sensor unit 110 of the sensor unit group 120X will be described below. In FIG. 8 , the sensor units 110 a to 110 c are extracted from the sensor unit group 120X, and the transmission wiring 70 and the like arranged in each sensor unit 110 are enlarged and displayed.

Here, the upper end of the wiring adjacent portion 51d of the transmission electrode 51 of each sensor unit 110 is used as a reference, and the wiring width of each transmission wiring 70 located on a reference line extending from the upper end in the left-right direction is set to be each The wiring width of each transmission wiring 70 in the sensor unit 110 will be described.

The wiring width of the transmission wiring 70 d in the sensor units 110 a to 110 c will be described as an example of the wiring width of each transmission wiring 70 in each sensor unit 110 .

First, the wiring width L2 of the transmission wiring 70d of the sensor unit 110b is set to be larger than the wiring width L1 of the transmission wiring 70d of the sensor unit 110a (L1<L2). In addition, the wiring width L3 of the transmission wiring 70d of the sensor unit 110c is set to be larger than the wiring width L2 of the transmission wiring 70d of the sensor unit 110b (L2<L3).

In other words, the wiring width of the transmission wiring 70d gradually becomes larger as the sensor unit 110 moves upward (L1<L2<L3). This point is also the same for other transmission lines 70 .

The transmission wiring 70 of each sensor unit 110 in each column is formed to be pulled out downward. Therefore, the wiring length of the transmission wiring 70 becomes longer as the sensor unit 110 goes upward, and the wiring resistance also increases. Due to the increase in the wiring resistance of the transmission wiring 70 , there is a possibility that the detection accuracy of the touch position on the upper side of the touch panel 2 may be lowered.

Therefore, in order to reduce the wiring resistance in the transmission wiring 70 as much as possible, the transmission wiring 70 in the comparative example is designed so that the number of wirings decreases as the sensor unit 110 goes up, and the space corresponding to the reduction is utilized. Increase the wiring width.

In addition, the wiring width (wiring width L1) of the transmission wirings 70b to 70e in the sensor unit 110a, the wiring width (wiring width L2) of the transmission wirings 70c to 70e in the sensor unit 110b, and the wiring width (wiring width L2) in the sensor unit 110c The wiring widths (wiring width L3) of the transmission wirings 70d and 70e are respectively the same. That is, the wiring width of each transmission wiring 70 arranged in each sensor unit 110 is set to be equal.

In addition, the wiring width of the transmission wiring 70d gradually becomes larger as the sensor unit 110 goes upward, and in a predetermined sensor unit 110, the wiring with the transmission electrode 51 The wiring width of the transmission wiring 70 adjacent to the adjacent portion 51d is larger than the electrode width of the wiring adjacent portion 51d.

In FIG. 8, in the sensor unit 110b, the wiring width L2 of the transmission wiring 70c adjacent to the wiring adjacent portion 51d is set larger than the electrode width L4 of the wiring adjacent portion 51d (L4<L2).

In the sensor unit 110c arranged upward from the sensor unit 110b, the wiring width L3 of the transmission wiring 70 adjacent to the wiring adjacent portion 51d is also set to be larger than the electrode width L4 of the wiring adjacent portion 51d. (L4<L3).

Hereinafter, in the sensor cells 110 continuing upward, the wiring width of the transmission wiring 70 adjacent to the wiring adjacent portion 51d is also larger than the electrode width of the wiring adjacent portion 51d.

Next, the remaining regions 90 and 93 resulting from the arrangement of the transfer wiring 70 of the sensor unit group 120X will be described. FIG. 9 is an enlargement of the sensor units 110d and 110e at the upper end of the sensor unit group 120X.

A surplus area 90 is created on the right side of the transmission line 70e. In addition, in the sensor cell 110e belonging to the upper end of the sensor cell group 120X, since there is no transfer wire 70 adjacent to the wire adjacent portion 51d of the transfer electrode 51, a surplus region 93 is generated.

Therefore, in the comparative example, dummy electrodes patterned in a floating state were arranged in the remaining region 93 in consideration of the optical appearance.

In the above-mentioned comparative example, in order to reduce the increased wiring resistance due to the longer wiring length of the transmission wiring 70, the wiring width is increased as the sensor unit 110 goes upward, thereby achieving accurate detection of the operating position. degree of improvement.

However, if the wiring width of the transmission wiring 70 is increased too much in order to reduce the wiring resistance, the detection accuracy of the touch position may decrease instead. The reason is that in and configured in each Among the plurality of transmission lines 70 arranged in parallel corresponding to the sensor units 110 of the column, the transmission signals T+, T- having logics of opposite signal waveforms are supplied to each of the transmission lines 70 adjacent to each other, and There is a possibility that the effect of canceling out the signal waveforms due to the capacitance between the transmission lines 70 may occur. Such an effect occurs more remarkably especially as the wiring width of the transmission wiring 70 becomes larger.

The implementation forms described below solve the above-mentioned problems in order to maintain or increase the detection accuracy of the operating position.

[4-2. Wiring design of transmission wiring in this embodiment]

The wiring design of the transmission wiring 70 of the touch panel 2 in this embodiment will be described using FIGS. 10 to 12 .

The sensor unit group 120Y in this embodiment is, as shown in FIG. 10 , composed of sensor units 110A, 110B, 110C, 110D, and 110E.

The sensor units 110A to 110E are sequentially arranged from the bottom end upward, and the transmission wiring 70A is connected to the transmission electrode 51 of the sensor unit 110A, and the transmission line 70A is connected to the transmission electrode 51 of the sensor unit 110B. The transmission line 70B, the transmission line 70C is connected to the transmission electrode 51 of the sensor unit 110C, the transmission line 70D is connected to the transmission electrode 51 of the sensor unit 110D, and the transmission line 70D is connected to the transmission electrode 51 of the sensor unit 110E. Wiring 70E.

The wiring width of the transmission wiring 70 arranged in each sensor unit 110 of the sensor unit group 120Y will be described below. In FIG. 11 , the sensor units 110A to 110C are extracted from the sensor unit group 120Y, and the transmission wiring 70 and the like arranged in each sensor unit 110 are enlarged and displayed.

In this embodiment, the wiring width of each transmission wiring 70 located on the reference line extending from the upper end of the wiring adjacent portion 51d of each sensor unit 110 in the left-right direction is also set as the width of each sensor unit 110. The wiring width of each transmission wiring 70 will be described.

In addition, the description below assumes that the detection area 50 of the sensor unit 100B is a reference unit.

Here, the reference cell refers to the detection area 50 serving as a reference for detection of the center of gravity value of the electrostatic capacitance. In the detection of the operating position, the sensor unit 110 is set to a position at which a resolution higher than the density of the detection area 50 can be detected by detecting the center of gravity value of the electrostatic capacitance, and will be used as a reference for detecting the center of gravity value. Let it be referred to as a reference unit here.

In this embodiment, the detection area 50 of the central sensor unit 110 among the plurality of sensor units 110 arranged on the substrate 100 shown in FIG. , and the detection area 50 of the sensor unit 110 existing in the row of the unit is set as the reference unit in each column.

The description will be made using the wiring width of the transmission wiring 70D in the sensor units 110A to 110C as an example of the wiring width of each transmission wiring 70 in each sensor unit 110 .

First, the wiring width L6 of the transmission wiring 70D of the sensor unit 110B is set to be larger than the wiring width L5 of the transmission wiring 70D of the sensor unit 110A (L5<L6).

In this way, until the sensor unit 110B having the reference unit, the wiring width of the transmission wiring 70D gradually becomes larger as the sensor unit 110 goes upward. On the other hand, the transfer configuration of the sensor unit 110C adjacent to the upper side of the sensor unit 110B having the reference unit The wiring width L7 of the line 70D is the same as the wiring width L6 of the transmission wiring 70d of the sensor unit 110b (L6=L7).

In other words, until the sensor unit 110B having the reference unit, the wiring width of the transmission wiring 70D gradually becomes larger as the sensor unit 110 goes upward, but starts from the sensor unit 110B having the reference unit. , the wiring width of the transmission wiring 70D is the same even for the sensor units 110 in the upward direction. This point is also the same for other transmission lines 70 .

Although the wiring length of the transmission wiring 70 becomes longer and the wiring resistance increases as the sensor unit 110 moves upward, the influence of the wiring resistance can be controlled by controlling the transmission wiring 70 during the detection operation. The charging time can achieve a certain degree of control of the touch signal strength.

Therefore, in order to reduce the wiring resistance before reaching the reference unit, the wiring width of the transmission wiring 70 is enlarged to a certain extent, and the wiring width is not enlarged excessively after reaching the reference unit, thereby reducing the touch position caused by the wiring resistance. The reduction of the detection accuracy can reduce the effect of canceling the signal waveforms due to the capacitance of the adjacent transmission wiring 70, thereby maintaining or improving the detection accuracy of the touch position on the upper part of the touch panel 2. .

In the sensor unit 110B having the reference cell, the wiring width L6 of the transfer wiring 70C adjacent to the wiring adjacent portion 51d of the transfer electrode 51 is formed to be equal to or wider than the electrode width L8 of the wiring adjacent portion 51d. Small (L6≦L8).

In addition, the wiring width L6 of each of the transmission wirings 70C to 70E arranged in parallel in the sensor unit 110B is formed to be the same.

Thereby, the wiring width of each transmission wiring 70 becomes equal in each sensor cell 110 which follows the sensor cell 110B which has a reference cell in the upward direction (L6=L7, L7≦L8). Therefore, the effect of canceling the signal waveforms due to the capacitance of the adjacent transmission wiring 70 can be reduced, and the detection accuracy of the touch position on the upper part of the touch panel 2 can be maintained or improved.

The wiring width L5 of each of the transmission wirings 70B to 70E arranged in parallel in the sensor unit 110A is formed to be the same.

In addition, in the present embodiment, the wiring width of the transmission wiring 70 is gradually increased as the sensor unit 110 goes up to the sensor unit 110B having the reference unit. It may also be configured such that the wiring width of the transmission wiring 70 is equal in the vertical direction.

In FIG. 11 , for example, when the wiring width of the transmission wiring 70D is equal in the vertical direction, the wiring width L5 , the wiring width L6 , and the wiring width L7 are the same (L5=L6=L7). The same applies to other transmission lines 70 .

Next, the remaining area 90 resulting from the arrangement of the transfer wiring 70 of the sensor unit group 120Y will be described. FIG. 12 is an enlarged version of the sensor units 110D and 110E at the upper end of the sensor unit group 120Y.

In FIG. 12 , the number of transmission lines 70 decreases as the sensor units 110 go upward, so that a remaining area 90 is formed on the right side of the transmission lines 70E of the sensor units 110 in the upward direction. In addition, in the sensor unit 110E belonging to the upper end of the sensor unit group 120Y, there is no transfer wiring 70 adjacent to the wiring adjoining portion 51d of the transfer electrode 51, so a surplus region 90 is also generated on the right side of the wiring adjoining portion 51d. .

In the remaining area 90 , a dummy electrode is arranged in consideration of an optical appearance, but the dummy electrode is connected to the ground and functions as a ground electrode.

Among the two sensor units 110 adjacent in the left-right direction, the remaining area 90 is provided between the transmission line 70 of one sensor unit 110 and the reception line 80 of the other sensor unit 110, so that Electrically separating the transmitting wiring 70 and the receiving wiring 80 can avoid mutual electrical interference.

In addition, since the remaining electric charge is discharged from the dummy electrode to the ground, it is possible to prevent the decrease of the detection accuracy of the touch position caused by the influence on the absolute value or reproducibility of the signal value in the detection operation.

According to the above-mentioned present embodiment, it is devoted to the ingenuity of the wiring design of each column in the matrix of the sensor units 110 arranged on the substrate 100, so that the touch position on the upper part of the touch panel 2 can be maintained or improved. Detection accuracy.

<5. Modifications>

In addition, the wiring design of the transmission wiring 70 of the touch panel 2 in this embodiment can also adopt the following aspects.

The sensor unit 110 of this embodiment can adopt a structure other than the sensor unit 110X.

For example, as shown in the sensor unit 110Z of FIG. 13 , the dummy electrode group 60 may not be arranged, and the detection region 50A may be arranged so as to expand in the vertical direction. Thereby, the area adjacent to the transmission electrode 51 and the reception electrode 52 in the detection area 50A is increased, and the change amount of the electrostatic capacitance in the detection area 50A can be increased. Therefore, by using the structure of the sensor unit 110Z, the sensitivity of the touch panel 2 can be improved.

In this embodiment, although the detection area 50 of the sensor unit 110 used as the reference unit for the detection of the center of gravity value is described as a reference unit, the reference unit may be set by various references.

For example, when the wiring width of the transmission wiring 70 of the sensor unit 110 in the upper direction than the sensor unit 110 having the reference unit is set to be equal, the detection area of the sensor unit 110E at the upper end may be considered to be equal. The reference cell is set so that the wiring resistance of the 50-wire transmission wiring 70E becomes a predetermined value or less.

The reason why the reference cell is set according to the wiring resistance of the transmission wiring 70E here is that the wiring length of the transmission wiring 70E connected to the sensor unit 110E at the upper end is the longest. In other words, the wiring resistance of the transmission wiring 70 connected to the other sensor units 110 in the same column is also set as the reference cell so that the wiring resistance of the transmission wiring 70E whose wiring resistance becomes high becomes equal to or less than a predetermined value. The reason is below the predetermined value.

The wiring resistance is not more than a predetermined value, preferably not more than 150 kΩ, particularly preferably not more than 100 kΩ. The predetermined value here is the value of the wiring resistance after adding the control of the strength of the touch signal formed by controlling the charging time of the transmission wiring 70 during the detection operation.

In addition, the reference unit may be arbitrarily set from the sensor unit 110 arranged on the substrate 100 . For example, the detection area 50 of the sensor unit 110 located at about one-third of the sensor units 110 continuous in the vertical direction of each column may be set as the reference unit.

In the present embodiment, as shown in FIG. 11 , in the sensor unit 110B of the reference unit, although the wiring width L6 of the transmission wiring 70C adjacent to the wiring adjacent portion 51 d of the transmission electrode 51 is formed so as to be adjacent to the wiring The electrode width L8 of the portion 51d is the same as or larger than the electrode width The embodiment in which L8 is smaller has been described, but the wiring width L6 of the transmission wiring 70C may be formed to be equal to or smaller than an arbitrarily predetermined predetermined value.

In addition, the predetermined value here is set such that the wiring resistance of the transmission wiring 70C in the sensor unit 110B of the reference unit becomes a predetermined resistance value or less, for example, a value of 150 kΩ or less or 100 KΩ or less.

<6. Summary>

The touch panel 2 (touch panel device) of the above embodiment is equipped with: the detection area 50 is composed of a pair of transmission electrodes 51 and the reception electrodes 52; the transmission wiring 70 is connected to the transmission electrodes 51, and from The connection part connected to the detection area 50 is extended downward; and the receiving wiring 80 is connected to the receiving electrode 52; One or a plurality of detection areas 50 are arranged continuously in the direction, and are arranged side by side with respect to the reference unit on the right side perpendicular to the up-down direction: the transmission wiring 70 connected to the reference unit, and the corresponding One or a plurality of transmission lines 70 of one or a plurality of detection regions 50 arranged in an upward direction; the one or a plurality of transmission lines 70 arranged in parallel extend in an upward direction compared with the position arranged in the right direction with respect to the reference unit Wiring widths of the installed parts are equal (see FIG. 10 and FIG. 11 ).

That is, the wiring width of the transmission wiring 70 arranged rightward with respect to the reference cell and the wiring width of the transmission wiring 70 arranged rightward with respect to the detection region 50 above the reference cell are equal.

Therefore, by not making the wiring width of the transmission wiring 70 larger in the direction above the reference cell, it is possible to reduce the mutual interference of adjacent transmission wirings 70 which are logically opposite to each other. Thereby, it is possible to improve and enhance the accuracy characteristic which becomes an indicator of the accuracy of touch position detection. In order to maintain or improve the accuracy of touch position detection in the touch panel 2 . In particular, the accuracy characteristic of the upper part of the touch panel 2 can be improved by making uniform the wiring width of the portion extending upward from the position arranged in the right direction with respect to the reference cells.

In the touch panel 2 , the reference unit is the detection region 50 that becomes the reference for detecting the center-of-gravity value of the electrostatic capacitance. In the detection of the touch position, it is set to a position at which a resolution higher than the density of the detection area can be detected by detecting the center of gravity value of the electrostatic capacitance, and the detection area 50 used as a reference for detection of the center of gravity value is set to referred to here as the reference unit.

Thereby, the positioning of the reference cell becomes easy, and the wiring design of the transmission wiring 70 can be performed more efficiently.

In the touch panel 2 , the reference cell serves as a reference detection region 50 for defining the wiring width of the transfer line 70 upward from the reference cell so that the resistance value of the transfer line 70 becomes a predetermined value. In this way, for one or a plurality of transmission lines 70 arranged in parallel, the resistance value of the transmission line 70 is set to be a predetermined value. wiring width.

In order to improve the accuracy characteristics of the touch panel 2, it is very important not to make the wiring width of the transmission wiring 70 more than necessary, but the wiring resistance will become high because the wiring width is too narrow, and this will also affect the accuracy. Causes of property degradation.

Therefore, by setting the wiring width of the transmission wiring 70 in consideration of the wiring resistance value of the transmission wiring 70 that does not degrade the accuracy characteristic, the accuracy characteristic can be improved and enhanced more efficiently.

In addition, one or a plurality of transmission lines 70 arranged in parallel preferably have a line width such that the line resistance value becomes a value of 150 kΩ or less. In particular, it is ideal to set the wiring resistance value to 100 kΩ or less.

In the touch panel 2 , the wiring width of one or a plurality of transmission wirings 70 arranged in parallel is equal.

Thereby, the wiring width of the transmission line 70 at the portion extending upward from the position arranged in the right direction with respect to the reference cell and the portion extending downward at the portion arranged in the right direction with respect to the reference cell The wiring width of the transmission wiring 70 becomes the same.

Interference between adjacent transmission lines 70 can be reduced by eliminating the unevenness of the wiring width of each transmission line 70 . Thereby, the accuracy characteristic of the touch panel 2 can be further improved, and the detection accuracy of the touch position in the touch panel 2 can be maintained or improved.

In the touch panel 2 , the electrode width in the wiring adjacent portion 51 d of the transfer electrode 51 in the detection region 50 is larger than the wiring width of the adjacent transfer wiring 70 (see FIG. 11 ). That is, the wiring width of the portion of the transfer wiring 70 adjacent to the wiring adjoining portion 51d of the transfer electrode 51 extending upward from the position where the reference cells are arranged in the right direction is larger than the electrode width in the wiring adjoining portion 51d. Narrower.

In this way, the interference between the transmission electrodes 51 and the transmission wiring 70 can be reduced, thereby further improving the accuracy characteristics of the touch panel 2, and maintaining or improving the touch position detection accuracy in the touch panel 2 .

In the touch panel 2 , it is conceivable to arrange ground electrodes as dummy electrodes adjacent to the remaining region 90 on the right side of the transmission wiring 70 (see FIG. 12 ). Thereby, the residual charge on the right side of the transfer wiring 70 is discharged through the ground electrode in the remaining region 90 .

Therefore, the influence of the charges remaining in the dummy electrodes on the transfer wiring 70 adjacent to the dummy electrodes can be reduced, so that the accuracy characteristics of the touch panel 2 can be further improved, and the touch control in the touch panel 2 can be maintained or improved. Position detection accuracy.

Finally, the description of each of the above-mentioned embodiments is an example of the present invention, and the present invention is not limited to the above-mentioned embodiments. Therefore, it is needless to say that various changes can be made depending on the design, etc., without departing from the scope of the technical idea of the present invention, even in addition to the above-mentioned embodiments. In addition, the functions described in this specification are only examples and not limiting, and other functions are also possible.

50: detection area

51: Transmission electrode

51d: Wiring adjacent part

52: Receive electrode

60:Dummy electrode group

70A~70E: transmission wiring

90: remaining area

100A~100C: Sensor unit

120Y: Sensor unit group

L5, L6, L7: wiring width

L8: electrode width

Claims (7)

A touch panel device comprising: a detection area composed of a pair of transmission electrodes and a reception electrode; transmission wiring connected to the transmission electrodes and extending in a first direction from a connection portion connected to the detection area and receiving wires connected to the aforementioned receiving electrodes; when one of the plurality of aforementioned detection areas is used as a reference unit, at least one or a plurality of them are continuously arranged from the aforementioned reference unit toward the opposite direction of the aforementioned first direction. The aforementioned detection area; and relative to the aforementioned reference unit, arranged side by side in a second direction perpendicular to the aforementioned first direction: the aforementioned transmission wiring connected to the aforementioned reference unit; One or a plurality of the aforementioned transmission lines arranged continuously in the direction opposite to the direction opposite to the above-mentioned direction; among the aforementioned plurality of the aforementioned transmission lines arranged in parallel, from the position arranged in the aforementioned second direction toward the aforementioned reference unit. The one or more transmission wirings extending in the direction opposite to the first direction are those in which the wiring width of the extending portion is equal to the wiring width of the paralleling portion. The touch panel device according to claim 1, wherein the reference unit is the detection area as a reference for detecting the center of gravity value of the electrostatic capacitance. The touch panel device according to claim 1, wherein the reference unit is such that the resistance value of the transmission line becomes a predetermined value, and the wiring width of the transmission line from the reference unit toward the opposite direction is defined. The aforementioned detection area of the time reference. The touch panel device according to any one of Claims 1 to 3, wherein the wiring widths of the one or more transmission wirings arranged in parallel are equal. The touch panel device according to any one of claims 1 to 3, wherein the electrode width in the wiring adjacent portion of the transmission electrode in the detection region is larger than the wiring width of the adjacent transmission wiring. The touch panel device according to claim 3, wherein the one or plural transmission lines arranged in parallel are set to have a line width such that a line resistance value is 150 kΩ or less. In the touch panel device according to any one of claims 1 to 3, a ground electrode is disposed adjacent to the second direction side of the transmission wiring.

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