WO2014178577A1 - Touch detection device - Google Patents

Abstract

According to an embodiment of the present invention, provided is a touch detection device comprising: a plurality of sensor pads disposed to configure a plurality of columns for forming touch capacitance in a relationship with a touch generation means; and a plurality of signal wirings extending from each of the plurality of sensor pads and connected to a touch detection unit which detects touch generation on the basis of output signals from the plurality of sensor pads, wherein at least a part of the plurality of signal wirings extends through the gap between the plurality of sensor pads belonging to the same column.

Description

Touch detection device

The present invention relates to a touch detection device. More particularly, the present invention relates to a touch detection device in which the layout of signal wires from the sensor pads is distributed to various areas so that the area of the dead zone is reduced.

The touch screen panel is a device for inputting a user's command by touching a character or a figure displayed on a screen of the image display device with a human finger or other contact means, and is attached to and used on the image display device. The touch screen panel converts a contact position touched by a human finger or the like into an electrical signal. The electrical signal is used as an input signal.

1 is an exploded plan view of an example of a capacitive touch screen panel according to the related art.

Referring to FIG. 1, the touch screen panel 10 may include a first sensor pattern layer 13, a first insulating layer 14, and a second sensor pattern layer sequentially formed on the transparent substrate 12 and the transparent substrate 12. 15) and the second insulating film layer 16 and the metal wiring 17. As shown in FIG.

The first sensor pattern layer 13 may be connected along the transverse direction on the transparent substrate 12 and may be connected to the metal wires 17 in units of rows.

The second sensor pattern layer 15 may be connected along the column direction on the first insulating layer 14, and are alternately disposed with the first sensor pattern layer 13 so as not to overlap the first sensor pattern layer 13. . In addition, the second sensor pattern layer 15 is connected to the metal wires 17 in units of columns.

When a human finger or a contact means contacts the touch screen panel 10, a change in capacitance according to a contact position is transmitted to the driving circuit through the first and second sensor pattern layers 13 and 15 and the metal wire 17. do. As the change in capacitance thus transferred is converted into an electrical signal, the contact position is identified.

However, the touch screen panel 10 must separately include a pattern made of a transparent conductive material such as indium tin oxide (ITO) on each of the sensor pattern layers 13 and 15, and between the sensor pattern layers 13 and 15. Since the insulating film layer 14 must be provided, the thickness increases.

In addition, since touch detection is possible only by accumulating a small change in capacitance generated by touch several times, it is necessary to detect a change in capacitance at a high frequency. In addition, in order to sufficiently accumulate the change in capacitance within a predetermined time, metal wiring for maintaining a low resistance is required, which causes a thick bezel on the edge of the touch screen and generates an additional mask process.

In order to solve this problem, a touch detection apparatus as shown in FIG. 2 has been proposed.

The touch detection device illustrated in FIG. 2 includes a touch panel 20, a driving device 30, and a circuit board 40 connecting the two.

The touch panel 20 includes a plurality of sensor pads 22 formed on the substrate 21 and arranged in a polygonal matrix and connected to the sensor pads 22.

Each signal line 23 has one end connected to the sensor pad 22 and the other end extending to the bottom edge of the substrate 21. The sensor pad 22 and the signal wiring 23 may be patterned on the cover glass 50.

The driving device 30 sequentially selects a plurality of sensor pads 22 one by one to measure the capacitance of the corresponding sensor pad 22, and detects whether a touch occurs.

The signal wiring 23 connects the sensor pad 22 and the driving device 30. The signal wiring 23 may be patterned with ITO.

3 illustrates a plurality of sensor pads 22 arranged in adjacent columns and signal wirings 23 connected to the respective sensor pads 22 in the touch detection apparatus illustrated in FIG. 2.

Referring to FIG. 3, since each of the sensor pads 22_1 and 22_2 has a quadrangular shape and is arranged in a row, the signal wires 23 extending from each of the sensor pads 22_1 and 22_2 constituting one row are connected to the sensor. It must extend through the sides of the pads 22_1 and 22_2. That is, it should extend through the outermost edges of the sensor pads 22_1 and 22_2 arranged in a matrix, or through the space between the rows where the sensor pads 22_1 and 22_2 are arranged.

According to this method, as shown in FIG. 3, the distance between the sensor pads 22_1 and 22_2 disposed in adjacent columns may pass through all the signal wirings 23 from the sensor pads 22_1 and 22_2 arranged in one row. It must be at least the interval.

For example, assuming that the sensor pads 22_1 and 22_2 are arranged in a matrix form of 7 × 2, as shown in FIG. 3, between the sensor pads 22_1 in the first row and the sensor pads 22_2 in the second row. There are seven signal wires 23 for connecting the driving device 30 and the respective sensor pads 22_1 and 22_2 one-to-one. Since the sensor pads 22_1 and 22_2 are actually arranged in a number of columns, the number of sensor pads 22_1 and 22_2 forming one row in at least one of the spaces between the columns, even if the signal wiring 23 is arranged in any form. The same number of signal wires 23 as should be arranged. Therefore, when arranging the sensor pads 22_1 and 22_2 in a matrix form, the distance between the columns may be such that the same number of signal wires 23 as the sensor pads 22_1 and 22_2 forming at least one column may be placed. There should be a gap of.

The line width of the signal line 23 may be formed to be very narrow to a few micrometers to several tens of micrometers. However, in practice, since a large number of sensor pads 22_1 and 22_2 are arranged in one column, the same number of signal wires 23 as the sensor pads 22_1 and 22_2 are spaced apart at regular intervals. There should be a considerable gap between the sensor pad 22_1 in the first row and the sensor pad 22_2 in the second row.

The touch detection operation selects one of the plurality of sensor pads 22_1 and 22_2, and then changes the output signal from the sensor pads 22_1 and 22_2 according to the capacitance formed between the corresponding sensor pads 22_1 and 22_2 and the touch generating means. In this case, the touch detection is impossible for the generation of the touch on the region where the sensor pads 22_1 and 22_2 do not exist.

As such, an area in which touch detection on the corresponding area is not possible or the detection performance is relatively low due to the absence of the sensor pads 22_1 and 22_2 is referred to as a dead zone. If a gap is formed between (22_1, 22_2), the gap becomes a dead zone.

There is a need for a technique for minimizing such dead zone areas to improve the accuracy of touch detection.

The present invention is to solve the above-mentioned problems of the prior art, the dead zone formed in the area for the signal wiring arrangement by dispersing the number of signal wires arranged between the rows and columns of the sensor pad in another area in the touch detection device The aim is to minimize the dead zone.

According to an embodiment of the present invention for achieving the above object, a plurality of sensor pads to form a touch capacitance in a relationship with the touch generating means, and to form a plurality of rows; And a plurality of signal wires extending from each of the plurality of sensor pads, the plurality of signal wires being connected to a touch detector that detects a touch generation based on output signals from the plurality of sensor pads, wherein at least some of the plurality of signal wires are provided. Is extended only through a gap between a plurality of sensor pads belonging to the same column.

The plurality of sensor pads may have a triangular shape, and a bottom side thereof may be disposed in parallel with the column direction.

The plurality of sensor pads having opposite height directions from the bottom side may be alternately arranged to form one row.

At least one side of the sides excluding the bottom side of the sensor pad may be parallel to one side of the sides except the bottom side of the adjacent sensor pad.

The signal wires extending through the gaps between the plurality of sensor pads belonging to the same column may extend in parallel with the remaining two sides except for the bottom side of the plurality of sensor pads.

At least one side of the sides of the plurality of sensor pads may be formed in a saw blade pattern.

A difference between the number of signal wires arranged in the gaps between the columns and the number of signal wires extending through the gaps between the sensor pads in the same row may be one or less.

The number of signal wires arranged in the intervals between the columns may be the same, and the number of signal wires extending through the gaps between the sensor pads in the same column may also be the same.

The number of signal wires extending through the interval between the sensor pads belonging to the same column may be 1/2 or an integer closest to the 1/2 value of the number of sensor pads belonging to the same column.

Signal wires connected to the sensor pads adjacent to the touch detector may extend through gaps between the sensor pads in the same row.

According to the exemplary embodiment of the present invention, since the number of signal wires disposed between the rows of the sensor pads in the touch detection device is reduced, the width of the dead zone formed in the area for the signal wire arrangement is minimized. .

According to an embodiment of the present invention, the dead zone that has been concentrated between the heat and heat of the existing sensor pad may be distributed to other areas, thereby minimizing the width of the area of one dead zone.

1 is an exploded plan view of a conventional touch screen panel.

2 and 3 show the configuration of a typical touch detection apparatus.

4 and 5 are views illustrating a configuration of a touch detection apparatus according to an embodiment of the present invention.

6 is a diagram illustrating a configuration of a touch detection apparatus according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, it includes not only "directly connected" but also "indirectly connected" with another member in between. . In addition, when a part is said to "include" a certain component, this means that it may further include other components, without excluding the other components unless otherwise stated.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a diagram illustrating a configuration of a touch detection apparatus according to an embodiment of the present invention.

Referring to FIG. 4, the touch detection apparatus according to the embodiment of the present invention includes a touch panel 100 and a driver 200.

The touch panel 100 includes a plurality of sensor pads 110 formed on a substrate and a plurality of signal wires 120 connected to the respective sensor pads 110. The substrate may be made of glass or plastic film of transparent material or the like.

According to an embodiment, the sensor pad 110 may be formed in a triangular shape having three sides, and preferably in an isosceles triangle shape having the same length of the two sides.

The plurality of sensor pads 110 are arranged to form a plurality of rows. The sensor pads 110 belonging to one row are alternately disposed in the column direction, and adjacent sensor pads 110 may be spaced apart from each other at a predetermined interval. . As described above, the sensor pad 110 may be formed in an isosceles triangle shape. If two sides having the same length are referred to as a first side and a second side, respectively, the other side is referred to as a bottom side, the sensor pad The bottom side of the 110 may be disposed parallel to the column direction. In addition, at least one side of the sides excluding the bottom side of the sensor pad 110 may be parallel to one side of the sides except the bottom side of the adjacent sensor pad 110. In detail, the first side of the specific sensor pad 110 is formed in parallel with the second side of the adjacent sensor pad 110. In addition, if a number is assigned from the nearest sensor pad 110 to the furthest sensor pad 110 on the basis of the driving unit 200, the even sensor pads 110 may be formed between the odd sensor pads 110, respectively. Are placed in the reverse direction. The first and second sides of the odd-numbered sensor pads 110 are spaced apart from and parallel to the first or second sides of the even-numbered sensor pads 110, respectively. The signal wiring 120 may also extend through the spaced intervals. That is, an area in which the signal wiring 120 may be disposed may be disposed not only in the interval between the columns of the sensor pads 110 but also in the intervals between the sensor pads 110 belonging to one column. Conventionally, an area in which the signal wiring 120 may be disposed is limited to a gap between columns, but according to an embodiment of the present invention, it may also be disposed in a gap between sensor pads 110 belonging to one column. Because of this, the arrangement of the plurality of signal wires 120 may be distributed to various areas, and thus the gap between the rows of the sensor pads 110 and the rows may be further narrowed. This will be described later in more detail.

On the other hand, the line width of the signal wiring 120 may be formed to be very narrow to a few micrometers to several tens of micrometers. The signal wiring 120 may extend from the respective sensor pads 110 to the driving unit 200.

The sensor pad 110 and the signal wiring 120 may be formed of indium-tin-oxide (ITO), antimony tin oxide (ATO), indium-zinc-oxide (IZO), carbon nanotube (CNT), graphene, and the like. It may be made of a transparent conductive material.

The sensor pad 110 and the signal wiring 120 may be simultaneously formed by, for example, laminating an ITO film on a substrate by sputtering or the like and then patterning the same using an etching method such as photolithography. . The substrate may be a transparent film.

Meanwhile, the sensor pad 110 and the signal wiring 120 may be directly patterned on the cover glass. In this case, since the cover glass, the sensor pad 110, and the signal wiring 120 are integrally implemented, the substrate may be omitted.

The driving unit 200 for driving the touch panel 100 may be formed on a circuit board such as a printed circuit board or a flexible circuit film, but is not limited thereto and may be directly mounted on a part of the substrate or the cover glass.

The driver 200 may include a touch detector 210, a touch information processor 220, a memory 230, a controller 240, and the like, and may be implemented as one or more integrated circuit (IC) chips. The touch information processor 220, the memory 230, and the controller 240 may be separated from each other, or two or more components may be integrated.

The touch detector 210 may include a plurality of switches, a plurality of capacitors, and a plurality of impedance elements connected to the signal line 120, and may further include a multiplexer for selecting the sensor pad 110 for touch detection. have. According to an exemplary embodiment, the touch detector 210 may select a specific sensor pad 110 through a multiplexer, and detect whether a touch is made through a signal output from the corresponding sensor pad 110. The sensor pad 110 forms a touch capacitance in relation to the touch generating means. Since the output signal is different according to the touch capacitance, whether the touch of the sensor pad 110 is detected by detecting the output signal. It can be detected. The touch detector 210 receives a signal from the controller 240 to drive circuits for touch detection and outputs a voltage corresponding to the touch detection result. In addition, the touch detector 210 may include an amplifier and an analog-to-digital converter, and may convert the output signal difference of the sensor pad 110 into a memory 230 by converting, amplifying, or digitizing the difference.

The touch information processor 220 processes the digital voltage stored in the memory 230 to generate necessary information such as whether or not it is touched, a touch area, and touch coordinates.

The controller 240 may control the touch detector 210 and the touch information processor 220, may include a micro control unit (MCU), and perform predetermined signal processing through firmware.

The memory 230 stores digital voltages and predetermined data used for touch detection, area calculation, and touch coordinate calculation or data received in real time based on the difference in the voltage change detected by the touch detector 210.

Hereinafter, the arrangement of the sensor pad 110 and the signal wiring 120 shown in FIG. 4 will be described in detail.

5 is a view illustrating in detail the configuration of the sensor pad 110 and the sensor circuit wiring 120 according to an embodiment of the present invention.

Referring to FIG. 5, it is assumed that the sensor pads 110 are arranged in two rows and one row is composed of seven sensor pads 110 for convenience of description. In addition, in each row, a number from 1 to 7 will be given from the sensor pad 110 close to the driving unit 200.

Each sensor pad 110 may be formed in a triangle, preferably an isosceles triangle.

Of the sensor pads 110 belonging to one column, the bottom edges of the odd-numbered sensor pads (①, ③, ⑤, ⑦) form the first straight line L1, and the bottom edges of the even-numbered sensor pads (②, ④, ⑥) are made of the first line. A second straight line L2 is formed which is different from the one straight line. The first straight line L1 and the second straight line L2 may be parallel to the column direction in which the sensor pad 110 is disposed.

One even-numbered sensor pad (②, ④, ⑥) is disposed in the reverse direction between each odd-numbered sensor pad (①, ③, ⑤, ⑦) in one row, and conversely, each even-numbered sensor pad (②, One of the odd-numbered sensor pads (①, ③, ⑤, ⑦) is arranged in the reverse direction between ④ and ⑥). Arranged in the reverse direction means that the height direction is opposite to each other when the base is used as the starting point. That is, the height direction from the bottom side of the odd-numbered sensor pads ①, ③, ⑤, ⑦ and the height direction from the bottom side of the even-numbered sensor pads ②, ④, ⑥ are opposite to each other. In other words, a plurality of sensor pads having opposite height directions from the bottom side may be alternately arranged from the driving unit 200 to form one row.

Accordingly, in each of the odd numbered sensor pads (①, ③, ⑤, ⑦), the remaining two sides except for the bottom side may be at least one of the remaining two sides except for the lower side of the even numbered sensor pads (②, ④, ⑥). Spaced apart in parallel. For example, the first side B1 of the other two sides except for the bottom side of the third sensor pad ③ is spaced apart from one side B1 ′ of the second sensor pad ② and disposed in parallel with each other. The second side B2 is disposed in parallel with one side B2 ′ of the fourth sensor pad ④.

When there are two sides spaced apart in parallel, the distance between the two sides may be used as an extension passage of the signal line 120 as shown in the figure. Accordingly, there are three areas in which the signal wiring 120 extending from the plurality of sensor pads 110 arranged in one column may be arranged. In detail, the signal wiring 120 may be disposed in an area between the respective sensor pads 110 in the corresponding column in addition to both side regions of the corresponding column. In FIG. 5, the first sensor pad ①, the third sensor pad ③, and the signal wiring 120 from three sensor pads among the sensor pads 110 belonging to one column are included in one column. The signal wiring 120 from the fifth sensor pad (⑤) and the seventh sensor pad (⑦) extends through the gap between the second and second sensor pads (⑤, ⑦). ②), the signal wiring 120 from the fourth sensor pad ④ and the sixth sensor pad ⑥ is shown to be disposed on the right side of the column, but other arrangements are possible. That is, the signal wires 120 from the sensor pads 110 belonging to one column are distributed and arranged in at least three regions, and at least some of them are disposed between the plurality of sensor pads 110 belonging to one column. If extended only through the scope of the present invention.

The signal wires 120 extending through the gaps between the plurality of sensor pads 110 belonging to one column may extend in parallel with the other two sides except for the bottom side of the plurality of sensor pads 110.

Meanwhile, in FIG. 5, the arrangement form of the sensor pads 110 belonging to the first column is illustrated as the same as the arrangement form of the sensor pads 110 belonging to the second adjacent column. For example, the arrangement form of the sensor pads 110 belonging to the first column and the arrangement form of the sensor pads 110 belonging to the second column may be formed symmetrically with respect to an imaginary straight line between the first column and the second column. May be

In addition, among the sensor pads 110 belonging to one column, the sensor pad 110 closest to the driving unit 200 and the furthest sensor pad 110 may be cut in a direction perpendicular to the column direction.

According to the embodiment shown in FIG. 5, at most two signal wires 120 are disposed on the left side of the first column, and at most four signal wires 120 are disposed on the right side of the first column. That is, four signal wires 120 are arranged in the interval between the first column and the second column. The reason why there are four signal wires 120 disposed between the first column and the second column is that the signal wires 120 from two sensor pads 110 among the sensor pads 110 belonging to the second column adjacent to the first column are separated. Because it extends through the area. On the other hand, there are three signal wires 120 extending through the gap between the sensor pads 110 belonging to the first column.

Comparing the conventional signal wiring arrangement method described with reference to FIG. 3 and the signal wiring arrangement method of the present invention described with reference to FIG. 5, while seven signal wires were conventionally arranged at intervals between adjacent columns, According to the present invention, only four signal wires are arranged in the interval between adjacent columns.

That is, according to the present invention, as the signal wires extending from the sensor pads are distributed and arranged in a plurality of areas as compared with the prior art, the number of signal wires to be extended through one area is reduced. Accordingly, the distance between the rows formed by one area, for example, the sensor pads, and the rows can be significantly reduced as compared to the prior art, thereby reducing the gap between the sensor pads disposed in the neighboring rows. This can be minimized.

On the other hand, when the sensor pads 110 are arranged in a plurality of rows, the uniform spacing between the sensor pads 110 is advantageous in the accuracy and linearity of the touch detection, and thus, the spacing between the rows and the sensors in the columns. It is desirable to implement the same spacing between the pads as much as possible. To this end, the number of signal wires 120 extending between the sensor pads belonging to one column and the number of signal wires 120 disposed at intervals between each column should be as large as possible. That is, the signal wires 120 extending from the sensor pads 110 disposed in the touch panel 100 may be branched to be equally spaced apart from each other and between the sensor pads 110 within the same column. desirable.

In the embodiment shown in FIG. 5, the seven signal wires 120 extending from the seven sensor pads 110 arranged in one column are two on the left side of the column, and the distance between the sensor pads 110 in the column. Three branches on the right side and three branches on the right side of the column, whereby four signal wires 120 are uniformly arranged in the interval between each column, and through the interval between the sensor pads 110 forming one column. The three signal wires 120 are arranged. That is, two signal wires 120 are disposed at the leftmost and rightmost sides of the touch panel. However, except for this, the number of signal wires 120 disposed at intervals between the columns and the sensor pads belonging to one column ( The number of signal wires 120 disposed between the 110 may be as large as four and three, respectively.

If the number of sensor pads 110 belonging to one column is an even number, the number of signal wirings 120 arranged at intervals between the columns and the signal wirings arranged at intervals between the sensor pads 110 in one column The number of 120 may be the same. For example, suppose that eight sensor pads 110 are arranged in one column, two on the left side of the column, four on the gap between the sensor pads 110 in the column, and two on the right side of the column. If the signal wiring 120 is disposed, the number of the signal wiring 120 disposed in the interval between the columns and the number of the signal wiring 120 disposed between the sensor pads 110 belonging to one column are all the same. Can be done.

In general, the number of signal wires extending through the gaps between the sensor pads in the same row and the number of signal wires arranged in the gaps between the columns may be the same or may be formed in one difference. That is, it may be formed in one or less.

In addition, the number of signal wires extending through the interval between the sensor pads belonging to the same column may be 1/2 or an integer closest to the 1/2 value of the number of sensor pads belonging to the same column. For example, when nine sensor pads belong to the same column, the number of signal wires extending through the interval between the sensor pads belonging to the same column may be four or five. When formed in four, two and three signal wires extending through the left and right sides of each column may be formed, respectively. On the other hand, when formed in five, there may be two signal wires extending through the left and right intervals of each column.

Meanwhile, the number of signal wires arranged in the interval between each column may be the same, but may have a difference of about one, and the number of signal wires extending through the gap between the sensor pads in the same column may also be the same. The difference can be about one.

By arranging the signal wires in this manner, the number of signal wires 120 disposed in each area may be the same as much as possible, and thus the spacing between the sensor pads 110 may be uniform and minimized.

On the other hand, in the sensor pads 110 belonging to each column, it is to arrange the signal wiring 120 extending from the sensor pad 110 adjacent to the driver 200 to the area between the sensor pads 110 in the column. desirable. Since the resistance of the signal wiring 120 is proportional to the extending length, the signal wiring 120 connected to the sensor pad 110 relatively far from the driving unit 200 is extended in a straight line from the left or the right of the corresponding column. The signal wires 120 connected to the sensor pads 110 adjacent to the driving unit 200 may be bent to extend in an area between the sensor pads 110 in the corresponding row, and thus the signal wires 120 to be connected to each sensor pad 110. It is possible to implement a relatively uniform resistance value. However, the area in which the respective signal wires 120 extend may be variously specified according to the design.

6 is a diagram illustrating a configuration of a touch detection apparatus according to another embodiment of the present invention.

Referring to FIG. 6, the sensor pad 110 may have a triangular shape, and at least one side of three sides may be formed of one or more line segments that form a predetermined angle with respect to the extension line of the corresponding side.

For example, one side of the sensor pad 110 may include a protrusion or a sensor that protrudes outwardly in contact with each other to form a first line segment 111 and a second line segment 112 having different angles based on the one side. It may include a recess forming a concave shape inwardly of the pad 110.

As described above, at least one side of the sensor pad 110 may be repeatedly formed to alternately protrude and concave portions by repeatedly bending. That is, at least part of the sensor pad 110 may have a saw blade shape.

For example, when the first line segment 111 and the second line segment 112 are in contact with each other and bent, the protrusion may be formed outside the sensor pad 110. In addition, when the first line segment 111 ′ and the second line segment 112 ′ are in contact with each other and bent, a concave portion concave inwardly of the sensor pad 110 may be formed. Shapes, spacing, etc. of the protrusions and the recesses may be modified and applied in various embodiments. As at least one side of the sensor pad 110 is formed in a saw blade shape, the signal wire 120 extending adjacent thereto may also be extended by repeating bending in a saw blade shape.

The touch panel may be stacked on or embedded in the display device, and the display device may include a backlight, a polarizer, a substrate, a liquid crystal layer, a pixel layer, and the like, wherein the pixel layer is a surface (top surface) of the liquid crystal layer for displaying an image. Or a lower surface), and the color filter is formed on a pixel unit of red, green, and blue (hereinafter, referred to as R, G, and B) to implement colors in the liquid crystal display.

The pixel layer includes a plurality of pixels including subpixels R, G, and B. When the sensor pad 110 and the signal wiring 120 in the upper touch panel are connected to the driving unit 200 in a straight line, the pixel layer may be disposed in the area. Therefore, the distance between the sensor pad 110 and the signal wiring 120 is changed. For example, the distance between the sensor pad 110 and the signal wiring 120 becomes close in the region close to the driving unit 200, and conversely, the sensor pad 110 and the signal wiring 120 are located in the region far from the driving unit 200. The gap may be farther away. As a result of this deviation, the diffuse reflectance of the light emitted from the backlight causes a difference for each region, and there is a problem in that a difference in distance between the sensor pad 110 and the signal wiring 120 may be noticeable from the outside. In addition, as described above, since the distance between the signal wires 120 is different depending on the area, the area where each signal wire 120 overlaps with the R, G, and B subpixels is also different depending on the area. As a result, each of the pixels has a difference in color temperature generated by each pixel according to the light transmittance of the signal wiring 120 superimposed on each pixel, and color difference occurs. According to the embodiment illustrated in FIG. Since the directions of the R, G, and B subpixels and the direction of extension and bending of the signal wiring 120 are different, there is a large difference in the area where the signal wiring 120 and the R, G, and B subpixels overlap each other depending on the region. There will be no. Therefore, color temperature difference and color difference according to the area can be minimized.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is represented by the following claims, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present invention.

Claims (10)

A plurality of sensor pads forming touch capacitance in a relationship with the touch generating means and arranged to form a plurality of rows; And A plurality of signal wires extending from each of the plurality of sensor pads and connected to a touch detector for detecting a touch generation based on output signals from the plurality of sensor pads, At least some of the plurality of signal wires extend only through a gap between a plurality of sensor pads belonging to the same column. The method of claim 1, The plurality of sensor pads are formed in a triangular shape, the bottom side is disposed in parallel with the column direction, the touch detection device. The method of claim 2, And a plurality of sensor pads of which height directions are opposite to each other from the bottom side are alternately arranged to form one row. The method of claim 2, At least one side of the sides except the bottom side of the sensor pad is parallel to one of the sides except the bottom side of the adjacent sensor pad, the touch detection device. The method of claim 2, And a signal wire extending through a gap between the plurality of sensor pads belonging to the same column, to extend in parallel with two other sides except for the bottom side of the plurality of sensor pads. The method of claim 2, At least one of the sides constituting the plurality of sensor pads is formed in a saw blade pattern, the touch detection device. The method of claim 1, And a difference between the number of signal wires arranged in the gaps between the columns and the number of signal wires extending through the gaps between the sensor pads in the same row is one or less. The method of claim 7, wherein And the number of signal wires arranged in the intervals between the columns is the same, and the number of signal wires extending through the gaps between the sensor pads in the same row is also the same. The method of claim 1, The number of signal wires extending through the interval between the sensor pads belonging to the same column is 1/2 or the integer closest to the 1/2 value of the number of sensor pads belonging to the same column. The method of claim 1, The signal wires connected to the sensor pads adjacent to the touch detector extend through gaps between the sensor pads in the same row.

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