KR20130104845A - Electrostatic capacitive type touch-sensitive panel for display device - Google Patents

Abstract

PURPOSE: An electrostatic capacitive type touch sensitive panel for a display device is provided to reduce the influence of noise component, by forming space parts on a second electrode column. CONSTITUTION: First conductive electrode columns (TS) are arranged along a first direction as being separated from each other, and second conductive electrode columns (RS) are arranged along a second direction crossing with the first direction as being separated from each other and are insulated from the first conductive electrode columns. The second conductive electrode columns include conductive bars (Rx1-Rx3) arranged along the second direction as being separated from each other and a conductive cross bar (Rc) formed to cross with the conductive bars at every area overlapped with the first electrode column. The conductive cross bar includes both end parts protruded from the conductive bars located at either side.

Description

Capacitive touch sensing panel for display device {ELECTROSTATIC CAPACITIVE TYPE TOUCH-SENSITIVE PANEL FOR DISPLAY DEVICE}

The present invention relates to a touch sensing panel, and in particular, it is possible to improve touch sensitivity by reducing the parasitic capacitance of a touch electrode string (touch signal line) and increasing the amount of change in mutual capacitance generated during touch. The present invention relates to a capacitive touch sensing panel for a display device.

Recently, display devices such as liquid crystal displays, electroluminescent displays, and plasma display panels have been attracting attention due to their fast response speed, low power consumption, and excellent color reproducibility. . Such display devices have been used in various electronic products such as TVs, computer monitors, notebook computers, mobile phones, refrigerator displays, personal digital assistants, and automated tel- ler machines. Generally, these display devices constitute an interface with a user by using various input devices such as a keyboard, a mouse, and a digitizer.

However, the use of separate input devices such as a keyboard and a mouse has a problem of causing user dissatisfaction due to inconvenience of taking up space and learning how to use. Therefore, there is a growing demand for an input device that is convenient and simple and can reduce malfunctions. In accordance with such a request, a touch screen panel has been proposed in which a user inputs information by directly contacting a screen with a finger or a stylus pen.

The touch sensing panel is simple, has less malfunction, and can be input without using a separate input device. It is also applicable to various display devices because of the convenience that a user can operate quickly and easily through the contents displayed on the screen. It is becoming.

In the touch sensing panel, a resistive film type, an electromagnetic type, an optical sensor type, an ultrasonic type, and a capacitive type are known according to a method of sensing a touched part.

The resistive type is a method in which a metal electrode is formed on an upper plate or a lower plate to determine a touched position in a state where a DC voltage is applied as a voltage gradient according to a resistance. In the resistive film method, when a touch is applied on the upper substrate and a touch pressure is applied, the transparent conductive film between the upper substrate and the lower substrate is mechanically contacted. Detect location. Such a resistive film method has the advantage of detecting a relatively accurate touch position because mechanical contact is involved, but the touch position is indirectly detected by a potential value that detects the potential of the touched X-axis and Y-axis positions. A digital converter (ADC) is necessary. Therefore, the resistive film has a problem that it is difficult to detect the touch position when the device configuration is complicated and the contact force is small.

In addition, the electromagnetic type (electromagnetic type) is a method using the electromotive force generation principle by the magnet of the Faraday law, calculates the coordinates by determining the amount of current flowing in the unit coil for each position, and is induced when the electronic pen touches the conductive film It reads LC value and detects touched part. According to the electromagnetic method, since an AC signal must be applied to the coil, there is an inconvenience in that a special dedicated pen is required.

The optical sensor type has a disadvantage in that it is influenced by light incident from the outside in a manner of determining its position when the optical path between the light output element and the light input element is blocked.

Ultrasonic type (ultrasonic type) is a method similar to the optical sensor method, and determines the position when the sound wave path between the sound wave generating element and the sound wave recognition element is blocked. Therefore, the ultrasonic method has a disadvantage of being vulnerable to ambient noise or noise.

On the other hand, the capacitive type electrostatic capacitive type detects a minute current flowing in response to a change in capacitance coupled between a sensing electrode and a finger and determines a position. When a matrix is formed by crossing and a touch is made at an arbitrary position on the matrix, the touch position is detected by finding coordinates of the X and Y axes on the matrix where capacitance changes. Therefore, even when the contact force is small, there is an advantage that the touch position can be accurately detected by detecting the change in capacitance.

Hereinafter, a capacitive touch sensing panel according to the related art will be described with reference to FIGS. 1 and 2.

1 is a plan view of a capacitive touch sensing panel according to the related art, in which a driving electrode and a sensing electrode are formed in a bar-shaped pattern, and FIG. 2 is taken along the line II ′ of FIG. 1. As a cross-sectional view, changes in electric fields before and after the touch between the drive electrode and the sensing electrode are shown.

1 and 2, the conventional capacitive touch sensing panel includes an electrode forming portion A, a routing wiring portion B, and a pad portion C. As shown in FIG.

The electrode forming unit A includes a plurality of bar-shaped driving electrode rows TS and a plurality of bar-shaped sensing electrode rows RS.

The plurality of driving electrode columns TS are formed on one surface of the substrate 10 and are arranged side by side along a first direction (eg, X-axis direction). The plurality of sensing electrode columns RS are formed on the other surface of the substrate 10 and are arranged side by side along a direction crossing the driving electrode columns TS (eg, the Y-axis direction).

As illustrated in FIG. 1, the routing wiring part B is formed at an outer portion of the electrode forming part A of the substrate 10, and each of the plurality of driving electrode columns TS is formed on one surface of the substrate 10. The plurality of first routing wires RW1 are connected to each other. The routing wiring part B is also formed at an outer portion of the electrode forming part A of the substrate 10, and a plurality of second electrodes connected to the plurality of sensing electrode rows RS on the other surface of the substrate 10, respectively. Routing wires RW2.

The pad portion C is formed adjacent to the routing wiring portion B of the substrate 10, and the plurality of driving electrode columns TS are formed on one surface of the substrate 10 through the plurality of first routing lines RW1. ) And a plurality of first pads RP1 connected to each other. The pad portion C is also formed adjacent to the routing wiring portion B of the substrate 10, and is provided with a plurality of sensing electrode strings through the plurality of second routing wirings RW2 on the other surface of the substrate 10. And a plurality of second pads RP2 respectively connected to the RS.

When a user touches the aforementioned touch sensing panel by using a conductor such as a finger or a stylus pen, a finger is placed between the driving electrode string TS and the sensing electrode string RS as shown in FIG. 2. Since the electric field to be formed is blocked, a change in mutual capacitance between the driving electrode string TS and the sensing electrode string RS occurs. As described above, in the conventional touch sensing panel illustrated in FIG. 1, since the driving electrode string TS and the sensing electrode string RS cross each other to form a matrix, the driving electrode string and the sensing when the touch is made at an arbitrary position on the matrix. The capacitance changes between the rows of electrodes. Therefore, when the position on the matrix where the capacitance is changed is found by the coordinates of the X-axis and the Y-axis using the touch position detection algorithm, accurate touch position can be detected.

However, in the conventional touch sensing panel according to FIG. 1, the capacitance of the region overlapped by the intersection of the driving electrode string and the sensing electrode string becomes parasitic capacitance in another region in which sensing is not performed. Accordingly, the touch sensing panel of FIG. 1 formed of a bar type electrode array having a large overlapping region has a lower touch performance than the touch sensing panel of FIG. 3 formed of a diamond type electrode array having no overlapping region due to parasitic capacitance.

Therefore, there is a need for a new touch sensing panel that can solve the problems caused by the prior art.

SUMMARY OF THE INVENTION An object of the present invention is to reduce parasitic capacitance, increase the amount of change in capacitance generated during touch, and to increase touch sensitivity by reducing noise generated from the display. It is to provide a panel.

In order to achieve the above object, the touch sensing panel according to an embodiment of the present invention, a plurality of conductive first electrode string arranged to be spaced apart from each other along the first direction; A plurality of conductive second electrode rows arranged to be spaced apart from each other along a second direction crossing the first direction, the plurality of conductive second electrode rows electrically insulated from the plurality of first conductive electrode rows; Each includes at least two conductive bars arranged to be spaced apart from each other along the second direction, and at least one conductive cross bar formed to cross each other with the at least two conductive bars in regions overlapping the first electrode string. It is characterized by.

In the above configuration, the conductive crossbars may include both ends formed to protrude outward from conductive bars positioned at both sides of the conductive bars, respectively.

In addition, the cross bars of the second electrode rows adjacent to each other may be arranged on the same line or shifted so as not to contact each other.

In addition, a connection pattern for connecting the at least two conductive bars is formed at one end of the second electrode string.

In addition, the conductive bars and the conductive crossbar are integrally formed.

In addition, the width of the first direction of the conductive crossbar is greater than the width of the second direction of the first electrode string.

The plurality of first electrode rows may be formed on a first surface of the transparent substrate, and the plurality of second electrode rows may be formed on a second surface of the transparent substrate that is opposite to the first surface. The first electrode rows may be attached to an upper portion of the display device.

In addition, the plurality of first electrode strings are formed on a first surface of the first transparent film, and the second electrode strings are opposite to the first surface of the second transparent film facing the first surface of the first transparent film. The second surface of the first transparent film, which is formed on a second surface, which is a surface and is opposite to the first surface of the first transparent film, is attached to an upper portion of the display device.

In addition, a plurality of first electrode strings are formed on the first surface of the window panel, and the plurality of second electrode strings are formed on the insulating film to be separated from the first electrode string by the insulating film, and the plurality of first electrodes The columns may be attached to the upper portion of the display device.

In the above configuration, the plurality of first electrode rows are formed on one surface of the thin film transistor array, and the plurality of second electrode rows are one of the color filter array facing the thin film transistor array in which the first electrode columns are formed. It is characterized in that formed on the surface.

Further, in the above configuration, the plurality of second electrode rows are formed on one surface of the color filter array facing the thin film transistor array, and the plurality of first electrode rows are formed on the plurality of second electrode columns. And an insulating film formed on the insulating film so as to be electrically insulated from the first electrode rows.

In the above configuration, the plurality of first electrode rows are formed on one surface of the thin film transistor array facing the color filter array, and the plurality of second electrode rows are formed on the plurality of second electrode columns. And an insulating film formed on the insulating film so as to be electrically insulated from the first electrode rows.

According to the touch sensing panel according to the exemplary embodiment of the present invention, since the spaces are formed in the second electrode string (sensing electrode string), the touch sensing panel is supplied to the common electrode of the display device when the display device is driven than when the spaces are not formed. The effect of reducing the influence of noise components induced by the common voltage, etc., can be obtained.

In addition, since the space portions are formed in the second electrode string (sensing electrode string), the electric field is smaller in the overlapping region of the first electrode string TS and the second electrode string RS than in the case where the space portions are not formed. V) is formed. Therefore, when the touch is performed, the change in the electric field between the first electrode string and the second electrode string is increased, so that the touch sensitivity can be improved.

1 is a plan view of a capacitive touch sensing panel according to the related art, in which a driving electrode and a sensing electrode are formed in a bar-shaped pattern;
FIG. 2 is a cross-sectional view taken along line II ′ of FIG. 1 and illustrates changes in electric fields before and after a touch between a driving electrode and a sensing electrode;
3 is a plan view illustrating a touch sensing panel according to an embodiment of the present invention;
4 is a plan view illustrating first electrode strings of the touch sensing panel illustrated in FIG. 3;
FIG. 5 is a plan view illustrating second electrode strings of the touch sensing panel illustrated in FIG. 3;
6A through 6F are schematic cross-sectional views illustrating examples in which touch sensing panels according to embodiments of the present invention are applied to a display device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals refer to like elements throughout the specification.

A touch sensing panel according to an embodiment of the present invention will be described with reference to FIGS. 3 to 5. 3 is a plan view illustrating a touch sensing panel according to an exemplary embodiment of the present invention, FIG. 4 is a plan view illustrating first electrode strings of the touch sensing panel illustrated in FIG. 3, and FIG. 5 is a touch sensing panel illustrated in FIG. 3. 2 is a plan view showing the second electrode columns.

3 to 5, the touch sensing panel according to the embodiment of the present invention includes an electrode forming unit A, a routing wiring forming unit B, and a pad forming unit C.

The electrode forming unit A may include a plurality of first electrode strings TS or a plurality of driving electrode columns formed on one surface 100a of the transparent substrate 100 along a first direction (for example, the X-axis direction). A second direction (for example, the Y-axis direction) intersecting the first electrode columns TS on the other surface 100b opposite to one surface of the transparent substrate 100. A plurality of second electrode rows (RS) or a plurality of sensing electrode columns (hereinafter referred to as 'second electrode columns') formed along the.

As shown in FIG. 4, each of the first electrode strings TS is formed of one conductive electrode pattern having a predetermined width formed on one surface 100a of the transparent substrate 100. In the example of FIG. 4, each of the first electrode strings TS is illustrated to have the same width, but the present invention is not limited thereto. For example, the width of the first electrode string disposed at the outermost side of the first electrode strings TS may be smaller than the width of the first electrode string disposed at the inner side, or the width of each of the first electrode strings may be different from each other. It may be.

As illustrated in FIG. 5, each of the second electrode rows RS is formed on the other surface 100b of the transparent substrate 100 and is arranged to be spaced apart from each other in the second direction. Bars Rx1, Rx2, and Rx3 and conductive crossbars Rc formed to intersect the first to third conductive bars Rx1, Rx2, and Rx3 in regions overlapping the first electrode rows TS are included. do.

The conductive crossbar Rc includes both ends formed to protrude outwardly from the first and third conductive bars Rx1 and Rx3 positioned on both sides of the first to third conductive bars Rx1, Rx2 and Rx3, respectively. In addition, the crossbars Rc of the second electrode strings RS adjacent to each other are arranged on the same line so as not to contact each other, or are disposed to be shifted so as not to contact each other. In addition, the width W1 of the first direction (X-axis direction) of the conductive crossbar Rc is larger than the width W2 of the second direction (Y-axis direction) of the first electrode string TS.

Although the first electrode strings TS and the second electrode strings RS of the electrode forming portion A may be formed using an opaque material such as copper or another transparent conductive material, indium tin oxide (ITO) And a transparent conductive material such as indium zinc oxide (IZO) and gallium-doped zinc oxide (GZO).

As shown in FIGS. 4 and 5, the routing line forming unit B is formed at an outer portion of the electrode forming unit A present on one surface 100a of the transparent substrate 100, and includes a plurality of first lines. The plurality of first routing lines RW1 are respectively connected to the electrode columns TS. In addition, the routing line forming unit B is formed at an outer portion of the electrode forming unit A present on the other surface 100b of the transparent substrate 100, and includes the first to the second electrodes of the second electrode string RS. A plurality of connection patterns CP for connecting the three conductive bars Rx1, Rx2, and Rx3 and a plurality of second electrode rows RS respectively connected through the plurality of connection patterns CP. Second routing lines RW2.

Each of the first and second routing lines RW1 and RW2 and the connection pattern CP is formed of a metal material such as Al, AlNd, Mo, MoTi, Cu, and Cr.

In the exemplary embodiment of the present invention, each connection pattern CP is formed in the routing line forming unit B so that the plurality of second routing lines RW2 are formed in the first to third electrode patterns of the second electrode string RS. Although described as connecting with (Rx1, Rx2, Rx3), the present invention is not limited thereto. For example, each connection pattern CP may be formed to connect one ends of the first to third electrode patterns Rx1, Rx2, and Rx3 in the electrode forming part A. FIG. In this case, the connection pattern CP is formed of a transparent conductive material such as ITO, IZO, or GZO.

The pad forming unit C is a first pad connected to the plurality of first electrode strings TS through the plurality of first routing lines RW1 existing on one surface 100a of the transparent substrate 100, respectively. And the plurality of second electrode lines RS through the plurality of second routing lines RW2 and the connection pattern CP on the second surface RP1 and the other surface 100b of the transparent substrate 100, respectively. A plurality of second pads RP2 are connected. Each of the plurality of first and second pads RP1 and RP2 is formed of a metal material such as Al, AlNd, Mo, MoTi, Cu, and Cr.

Next, an example in which the touch sensing panel according to the embodiment of the present invention is variously applied to the display device will be described with reference to FIGS. 6A to 6C. 6A to 6C are schematic cross-sectional views illustrating examples in which touch sensing panels according to embodiments of the present invention are applied to a display device, respectively.

Referring to FIG. 6A, the touch sensing panel TP1 according to the exemplary embodiment of the present invention may include a plurality of first electrode strings TS shown in FIG. 4 formed on one surface of the transparent substrate 100. It is formed on the other surface of the transparent substrate 100, and includes a plurality of second electrode rows (RS) as shown in Figure 5 formed to cross the plurality of first electrode rows (TS). The window cover W is attached to the upper surface of the touch sensing panel TP1 formed as described above (the surface on which the second electrode strings RS are formed) by the first adhesive A1, and the lower surface of the touch sensing panel TP1. The display device DP is attached to the surface on which the first electrode strings TS are formed by the second adhesive A2.

Referring to FIG. 6B, the touch sensing panel TP2 according to another embodiment of the present invention may include a plurality of first electrode strings as illustrated in FIG. 4 formed on a first surface of the first transparent film F1. (TS) formed on a second surface opposite to the first surface of the second transparent film F2 opposite to the first surface of the first transparent film and intersecting with the plurality of first electrode rows TS. It includes a plurality of second electrode string (RS) as shown in Figure 5 formed to. In the touch sensing panel TP2, the first electrode strings TS formed on the first surface of the first transparent film F1 are attached to the second surface of the second transparent film F2 by the first adhesive A1. It is formed by. The window cover W is attached to the upper surface (the surface on which the second electrode string RS is formed) of the touch sensing panel TP2 formed as described above by the second adhesive A2, and the lower surface of the touch sensing panel TP2 ( The display device DP is attached to the first transparent film F1 by the third adhesive A3.

Referring to FIG. 6C, the touch sensing panel TP3 according to another embodiment of the present invention may include a plurality of second electrode rows RS as illustrated in FIG. 5 formed on one surface of the window cover W. Referring to FIG. The insulating layer INS formed on the second electrode rows RS and the insulating layer INS are formed on the insulating layer INS and are formed to intersect the plurality of second electrode rows RS. It includes a plurality of first electrode string (TS) as shown. The display device DP is attached to the lower surface of the touch sensing panel TP3 (the surface on which the first electrode strings TS are formed) formed by the adhesive A1. In the embodiment of FIG. 6C, since the first and second electrode strings TS and RS are formed on the window panel W, a separate transparent substrate or film is unnecessary.

Referring to FIG. 6D, the touch sensing panel TP4 according to another embodiment of the present invention includes a plurality of second electrode strings as illustrated in FIG. 5 formed on one surface of the color filter array CFA of the liquid crystal display device. And the plurality of second electrode rows RS formed on one surface of the thin film transistor array TFTA disposed to face the color filter array substrate CFA with the liquid crystal layer LC therebetween. It includes a plurality of first electrode string (TS) as shown in Figure 4 formed to cross.

Referring to FIG. 6E, the touch sensing panel TP5 according to another embodiment of the present invention includes a plurality of second electrode strings as illustrated in FIG. 5 formed on one surface of the color filter array CFA of the liquid crystal display device. (RS), the insulating layer (INS) formed on the second electrode rows (RS), formed on the insulating layer (INS), is formed to cross the plurality of second electrode rows (RS) It includes a plurality of first electrode string TS as shown in FIG. In the embodiment of FIG. 6E, the first and second electrode strings TS and RS are formed only on one surface of the color filter array CFA facing the thin film transistor array TFTA with the liquid crystal layer LC therebetween. It is different from the embodiment of FIG. 6D in that it is.

Referring to FIG. 6F, the touch sensing panel TP6 according to another embodiment of the present invention includes a plurality of first electrode strings as illustrated in FIG. 4 formed on one surface of the thin film transistor array TFTA of the liquid crystal display device. (RS), the insulating layer (INS) formed on the second electrode string (RS), formed on the insulating layer (INS), and formed to cross the plurality of first electrode string (TS) It includes a plurality of second electrode rows RS as shown in FIG. 5. In the embodiment of FIG. 6F, the first and second electrode strings TS and RS are formed only on one surface of the thin film transistor array TFTA facing the color filter array CFA with the liquid crystal layer LC therebetween. It is different from the embodiment of Figs. 6D and 6E in that it is.

According to the touch sensing panel according to the embodiment of the present invention described above, as shown in FIGS. 3 and 5, the first electrode string (or driving electrode string) TS and the second electrode string (or sensing electrode string) ( In the region where RS is crossed, the non-overlapping portion of the first electrode string TS and the second electrode string RS is formed. This is due to the structure of the second electrode string RS, and the spaces S are formed by the first to third conductive bars Rx1, Rx2 and Rx3 and the conductive crossbar Rc of the second electrode string. to be.

As described above, since the second electrode lines RS according to the embodiment of the present invention include the spaces S, the common voltages supplied to the common electrode of the display device when the display device is driven are compared with those without the space parts. The effect of reducing the influence of the induced noise component can be obtained. In addition, since the second electrode strings RS include the spaces S, the electric field is small in the overlapping region of the first electrode string TS and the second electrode string RS. Therefore, when the touch is performed, the change in the electric field between the first electrode string and the second electrode string is increased, so that the touch sensitivity can be improved.

In addition, according to an embodiment of the present invention, since the conductive crossbar Rc of the second electrode string RS is formed to protrude outward from the conductive bars Rx1 and Rx3, the fringe field between the first electrode string and the second electrode string is fringed. By increasing the field), it is possible to obtain an effect of improving the sensitivity at the touch.

A touch sensing panel according to an embodiment of the present invention is a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an electroluminescent display ( It can be applied to a display device including an electroluminescence device (EL), an electrophoretic display device.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

100: transparent substrate A: electrode forming portion
B: routing wiring forming portion C: pad forming portion
DP: display device F1: first film
F2: second film TP1, TP2, TP3: touch sensing pad
TS: first electrode string (driving electrode string) RS: second electrode string (sensing electrode string)
Rx1, Rx2, Rx3: Conductive Bar Rc: Conductive Crossbar
CP: connection pattern RW1: first routing wiring
RW2: second routing wiring RP1: first pad
RP2: second pad W: window cover

Claims (13)

A plurality of conductive first electrode rows arranged to be spaced apart from each other along the first direction;
A plurality of conductive second electrode rows arranged to be spaced apart from each other along a second direction crossing the first direction and electrically insulated from the plurality of first conductive electrode rows;
Each of the conductive second electrode rows may be formed to cross at least two conductive bars arranged to be spaced apart from each other along the second direction, and to cross each other with the at least two conductive bars in regions overlapping the first electrode rows. A capacitive touch sensing panel comprising one conductive cross bar.
The method of claim 1,
The conductive crossbars may include both ends formed to protrude outward from conductive bars positioned at both sides of the conductive bars, respectively.
The method of claim 1,
Cross capacities of the second electrode strings adjacent to each other are arranged on the same line so as not to contact each other.
The method of claim 1,
The capacitive touch sensing panel of claim 2, wherein the cross bars of the second electrode rows adjacent to each other are disposed to be in contact with each other so as not to contact each other.
The method of claim 1,
The capacitive touch sensing panel further comprises a connection pattern for connecting the at least two conductive bars at one end of the second electrode string.
The method of claim 1,
And the conductive bars and the conductive crossbar are integrally formed.
The method of claim 1,
The width of the first direction of the conductive crossbar is greater than the width of the second direction of the first electrode string, the capacitive touch sensing panel.
The method according to any one of claims 1 to 7,
The plurality of first electrode rows are formed on the first surface of the transparent substrate,
The plurality of second electrode rows are formed on a second surface of the transparent substrate opposite to the first surface,
And the plurality of first electrode lines are attached to an upper portion of the display device.
The method according to any one of claims 1 to 7,
The plurality of first electrode rows are formed on the first surface of the first transparent film,
The second electrode string is formed on a second surface opposite to the first surface of the second transparent film facing the first surface of the first transparent film,
And a second surface of the first transparent film opposite to the first surface of the first transparent film is attached to an upper portion of the display device.
The method according to any one of claims 1 to 7,
The plurality of first electrode rows are formed on the first surface of the window panel,
The plurality of second electrode rows are formed on the insulating film to be separated from the first electrode rows by an insulating film.
And the plurality of first electrode lines are attached to an upper portion of the display device.
The method according to any one of claims 1 to 7,
The plurality of first electrode columns are formed on one surface of the thin film transistor array,
And the plurality of second electrode strings are formed on one surface of a color filter array facing the thin film transistor array on which the first electrode strings are formed.
The method according to any one of claims 1 to 7,
The plurality of second electrode strings are formed on one surface of the color filter array facing the thin film transistor array.
The plurality of first electrode strings are formed on the insulating film to be electrically insulated from the first electrode strings by an insulating film formed on the plurality of second electrode strings. .
The method according to any one of claims 1 to 7,
The plurality of first electrode columns are formed on one surface of the thin film transistor array facing the color filter array.
The plurality of second electrode rows are formed on the insulating film to be electrically insulated from the first electrode rows by an insulating film formed on the plurality of second electrode rows. Detection panel.

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