KR20120038130A - Touch panel and display device associated with the same - Google Patents

Abstract

PURPOSE: A touch panel and a display device integrated with the same are provided to make a touch operation possible even though static electricity or scratches occur on a first or second bridge unit, thereby reducing defects. CONSTITUTION: A first sensor electrode pattern unit is arranged in parallel with a display panel. The first sensor electrode pattern unit includes first sensor electrodes and first bridge units. The first bridge units connect the first sensor electrodes in a first or second direction. A second sensor electrode pattern unit is arranged on a substrate in parallel with the second direction. The second sensor electrode pattern unit is vertical to second sensor electrodes and the first bridge unit. The second sensor electrode pattern unit includes second bridge units(166).

Description

Touch panel and touch panel integrated display device {TOUCH PANEL AND DISPLAY DEVICE ASSOCIATED WITH THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch panel and a touch panel integrated display device, and in particular, a touch operation is possible even when a defect such as static electricity and scratches occurs in a bridge part, and a touch panel and a touch panel integrated display device capable of reducing a defective rate. It is about.

Display devices for displaying images include cathode ray tubes, liquid crystal displays (LCDs), plasma display panels (PDPs), electroluminescent display devices (ELDs), organic There are various types, such as a light emitting display device.

Here, the liquid crystal display device displays an image by adjusting the light transmittance of the liquid crystal using an electric field. To this end, the liquid crystal display includes a liquid crystal panel having a liquid crystal cell, a backlight unit for irradiating light to the liquid crystal panel, and a driving circuit unit for driving the backlight unit and the liquid crystal cell.

When a surface is pressed on a liquid crystal panel by a pointer (a user's finger), a demand for a display device that is used as an input device by mounting a touch panel for inputting information corresponding to the position is rapidly increasing. The touch panel is divided into a resistive method, a capacitive method, an infrared sensing method, etc. according to a touch sensing method, and in consideration of the convenience and sensing force of the manufacturing method, a capacitive method has recently attracted attention. The touch panel includes a sensor glass in which electrodes for sensing in a capacitive manner are formed, and a cover glass formed to face the sensor substrate. Here, the sensor glass includes a first sensor electrode pattern part that senses capacitance in the X-axis direction, and a second sensor electrode pattern part that senses capacitance in the Y-axis direction.

The first sensor electrode pattern portion includes a plurality of first sensor electrodes 182 formed in the X-axis direction and a bridge portion 180 connecting the first sensor electrodes 182 adjacent to each other, and the second sensor electrode pattern The unit includes a plurality of second sensor electrodes 184 formed in the Y-axis direction and a connection unit 186 connecting the second sensor electrodes 184 adjacent to each other.

As shown in FIG. 1, the bridge unit 180 connects adjacent first sensor electrodes 182 to each other through a contact hole. Accordingly, the bridge unit 180 is formed in a heterojunction structure in which the lower electrode and the upper electrode are bonded through the contact hole, thereby generating static electricity due to high contact resistance or nonuniform interface characteristics due to double deposition, and the touch panel is a liquid crystal. Forming on the color filter substrate of the panel is inevitable to static electricity in the process. In addition, since the bridge portion 180 is formed in a heterojunction structure, there is a high probability of scratches or disconnection defects during the cleaning process.

As such, since the bridge unit 180 has a heterojunction structure through the contact hole, there is a high probability that a failure occurs, and when a failure occurs in the bridge unit 180, it is difficult to supply a signal to adjacent sensor electrodes to sense a touch. Can not.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a touch panel and a touch panel integrated display device capable of performing a touch operation even when a defect such as static electricity and scratches occur in the bridge portion and reducing a defective rate. .

To this end, the touch panel integrated display device according to the present invention includes a plurality of first sensor electrodes formed on a display panel displaying an image side by side in a first direction to sense a touch in a first direction, and the adjacent first A first sensor electrode pattern portion including first bridge portions connecting the sensor electrodes in a first direction or a second direction, and a plurality of first electrode electrode pattern portions are formed on the substrate in parallel to a second direction to sense a touch in a second direction. A second sensor electrode pattern including second sensor electrodes and a second sensor electrode pattern part formed in a direction perpendicular to the first bridge part and including second bridge parts connecting the adjacent second sensor electrodes; It is characterized by including a wealth.

The first bridge unit may connect the first sensor electrodes adjacent to each other through a contact hole, and the second bridge unit may connect the second sensor electrodes adjacent to each other through a contact hole.

The first and second bridge parts may be formed in one layer using a metal material or a transparent electrode material, or may be formed in two layers stacked in a metal material and a transparent electrode material.

The first sensor electrode pattern part may be formed on the same layer as the first sensor electrodes in the first direction and connect the first sensor electrodes adjacent to each other, and on the same layer as the first sensor electrodes. A first redundancy unit formed in the second direction and connecting the first sensor electrodes adjacent to each other, and a signal is provided by combining a line of N first sensor electrodes (where N is a natural number of two or more) into one line The apparatus may further include a first routing line.

The second sensor electrode pattern part is formed in the second direction on the same layer as the second sensor electrodes and connects first sensor electrodes adjacent to each other, and M (where M is a natural number of two or more). And a second routing line for supplying a signal by combining the lines of the second second sensor electrodes into one line.

In addition, the first bridge portion and the second connection portion are formed with a protective film therebetween, and the first bridge portion and the first sensor electrodes are formed to be in direct contact.

The second bridge portion and the first connection portion are formed with a protective film therebetween, and the second bridge portion and the second sensor electrodes are formed to be in direct contact with each other.

The second sensor electrode pattern part may further include a second redundancy part formed on the same layer as the second sensor electrodes in the first direction and connecting the second sensor electrodes adjacent to each other.

According to an exemplary embodiment of the present invention, a plurality of touch panels are formed on a substrate in parallel in a first direction to detect first touch and first adjacent electrodes in a first direction or a second direction. A first sensor electrode pattern part including first bridge parts to be connected, a plurality of first sensor electrodes formed side by side in a second direction on the substrate to sense a touch in a second direction, and the first bridge And a second sensor electrode pattern portion formed in a direction perpendicular to the portion and including a second sensor electrode pattern portion including second bridge portions connecting the adjacent second sensor electrodes.

The first bridge unit may connect the first sensor electrodes adjacent to each other through a contact hole, and the second bridge unit may connect the second sensor electrodes adjacent to each other through a contact hole.

The first bridge portion is formed to be in direct contact with the first sensor electrodes, and the second bridge portion is formed to be in direct contact with the second sensor electrodes.

As described above, the touch panel integrated display device according to the present invention forms first bridge portions connecting adjacent first sensor electrodes and second bridge portions connecting adjacent second sensor electrodes in different directions. Accordingly, a signal is supplied through a first connection part connecting the adjacent first sensor electrodes and a second connection part connecting the adjacent second sensor electrodes even when a failure occurs in the first or second bridge part in one sensing pixel. do.

As described above, in the touch panel integrated display device according to the present invention, even when a defect such as static electricity or scratch occurs in the first or second bridge portion, the touch operation can be performed and the failure rate can be reduced.

In addition, the touch panel integrated display device according to the present invention can improve the sensing force of n times or more compared to the conventional touch panel by arranging sensor electrodes corresponding to 1 / n times the area of a finger or pointer in one sensing pixel.

1 is a plan view illustrating a conventional touch panel.
2 is a perspective view illustrating a touch panel integrated display device according to a first embodiment of the present invention.
FIG. 3 is a plan view of the touch panel shown in FIG. 2.
FIG. 4 is an enlarged plan view of a region A illustrated in FIG. 3.
5A and 5B illustrate cross-sectional views taken along line II ′ and II-II ′ of FIG. 4.
6A and 6B illustrate cross-sectional views taken along line III-III ′ and IV-IV ′ of FIG. 4.
FIG. 7 is an enlarged view of a region A shown in FIG. 3, and is a plan view illustrating signal flow when a failure occurs in a first bridge portion or a second bridge portion in one sensing pixel.
8 is a plan view of a touch panel according to a second embodiment of the present invention.
FIG. 9 is an enlarged view of the region C illustrated in FIG. 8, and is a plan view illustrating signal flow when a failure occurs in the first bridge portion or the second bridge portion in the region C. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description. Before describing the present invention in detail, the same components are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the case where it is judged that the gist of the present invention may be blurred to a known configuration, do.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 9.

2 is a perspective view illustrating a touch panel integrated display device according to a first embodiment of the present invention. 3 illustrates a plan view of the touch panel illustrated in FIG. 2, and FIG. 4 illustrates an enlarged plan view of region A illustrated in FIG. 3. 5A and 5B illustrate cross-sectional views of FIG. 4 taken along lines II ′ and II-II ′, and FIGS. 6A and 6B illustrate FIG. 4 taken along lines III-III ′ and IV-IV ′. The cross section is shown.

The touch panel integrated display device illustrated in FIG. 1 includes a liquid crystal panel 110 and a touch panel mounted on the liquid crystal panel 110. In this case, the touch panel integrated display device may be a flat panel display device in addition to the liquid crystal panel.

The liquid crystal panel 110 includes an upper substrate 112 having a thin film transistor connected to a gate line and a data line, a lower substrate 114 having a color filter for color implementation, a pixel electrode connected to the thin film transistor, and a pixel. A common electrode forming a vertical electric field or a horizontal electric field with the electrode, an upper polarizing plate 118 attached to the front surface of the upper substrate 112, and a lower polarizing plate 116 attached to the rear surface of the lower substrate 114.

The color filter is formed on the upper substrate 112 so that the color filter is distinguished based on the black matrix. This color filter is formed by R, G, and B colors to implement R, G, and B colors.

The common electrode may be formed of a transparent conductive film on the rear surface of the upper substrate 112 to form a vertical electric field with the pixel electrode, and may be formed of a transparent conductive film on the lower substrate 114 to form a horizontal electric field with the pixel electrode. . The common electrode is supplied with a reference voltage for driving the liquid crystal, that is, a common voltage.

The thin film transistor is formed on the lower substrate 114 and selectively supplies the data signal from the data line to the pixel electrode in response to the gate signal from the gate line. To this end, the thin film transistor overlaps a gate electrode connected to a gate line, a source electrode connected to a data line, a drain electrode connected to a pixel electrode, and a gate electrode and a gate insulating layer interposed therebetween, and a channel is formed between the source electrode and the drain electrode. An active layer to be formed, and an ohmic contact layer for ohmic contact between the active layer and the source electrode and the drain electrode are provided.

The pixel electrode is independently formed to overlap the color filters R, G, and B in each pixel region, and is connected to the drain electrode of the thin film transistor. In addition, the pixel electrode overlaps the common electrode with the liquid crystal layer interposed therebetween to form a vertical electric field, or is formed on the same substrate to form a horizontal electric field. When the data signal is supplied through the thin film transistor, the pixel electrode forms a vertical electric field or a horizontal electric field with the common electrode supplied with the common voltage so that the liquid crystal molecules arranged in the vertical direction rotate by the dielectric anisotropy. In addition, light transmittance through the pixel region is changed according to the degree of rotation of the liquid crystal molecules, thereby realizing grayscale.

As described above, the liquid crystal panel is a twisted-nematic (TN) method, in which one electrode is disposed on two substrates, the liquid crystal directors are arranged to be twisted by 90 °, and then a voltage is applied to the electrodes to drive the liquid crystal directors. In-Plane Swiching (IPS) mode, in which two electrodes are formed on top of each other and the director of the liquid crystal is controlled by a horizontal electric field generated between the two electrodes, and the two electrodes are formed of transparent conductors to form a narrow gap between the two electrodes. By using a fringe field formed between the two electrodes can be used a method such as the FFS (Fringe Field Swiching) mode method, but is not limited thereto.

The upper polarizer 118 is formed on the upper substrate 112 of the liquid crystal panel 110. The upper polarizer 118 controls the amount of transmitted light and the polarization state with respect to the light incident from the liquid crystal panel 110.

The lower polarizer 116 is formed on the rear surface of the lower substrate 12 of the liquid crystal panel 110. The lower polarizer 116 controls the amount of transmitted light and the polarization state of the light incident from the backlight unit.

The touch panel includes a sensor substrate 130 having first and second electrode pattern portions functioning as position sensing electrodes, a cover substrate 132 formed to face the sensor substrate 130, and an upper polarizing plate of the liquid crystal panel 110. The first adhesive layer 120 formed on the 118 and the second adhesive layer 122 formed on the sensor substrate 130 are included. The sensor substrate 130 and the cover substrate 132 may be formed of transparent glass. In addition, a bottom insulating layer or a shielding electrode may be formed on the rear surface of the sensor substrate 130.

The sensor substrate 130 includes a first sensor electrode pattern part, a second sensor electrode pattern part, and a sensor part FPC (FPC) 170.

A plurality of first sensor electrode pattern parts are formed side by side in the first direction to detect a change in capacitance in the first direction. Here, the first direction may be, for example, the X-axis direction. To this end, the first sensor electrode pattern portion is formed in the first direction on the same layer as the first sensor electrodes 152a, 152b and 152c having a rhombus shape or diamond shape and the first sensor electrodes 152a, 152b and 152c. To connect the first sensor electrodes 152a, 152b, and 152c adjacent to each other, and the first sensor electrodes 152a, 152b, and 152c adjacent to each other through contact holes 252 and 254. The first bridge portion 156 and the first sensor electrodes 152a, 152b, and 152c are formed on the same layer in the second direction and connect the first sensor electrodes 152a, 152b, and 152c adjacent to each other. First routing for combining the redundancy unit 159 and the lines 158a and 158b of N first sensor electrodes N (where N is a natural number of two or more) into one line to supply a first sensing signal SS1. Line 158. The first routing line 158 combines the lines of the N first sensor electrodes into one line to supply the first sensing signal SS1, but the odd-numbered (Xodd) first sensor electrodes 152a, 152b, and 152c. ) And the even-numbered first sensor electrodes 152a, 152b, and 152c are combined in one line.

Specifically, referring to FIGS. 4 to 6B, any one of the odd-numbered first sensor electrodes 152a, 152b, and 152c may have the first sensor electrode 152b adjacent to the left side. ) Is connected through the first bridge portion 156 and the first sensor electrode 156c and the first connection portion 154 adjacent to the right side. The first sensor electrode 152a of any of the even-numbered first sensor pad parts 152a, 152b, and 152c is connected to the first sensor electrode 152b adjacent to the left through the first connection part 154. The first sensor electrode 152c adjacent to the left side is connected through the first bridge part 156. The odd first sensor electrode 152a and the even first sensor electrode 152a are connected through a first redundancy unit 159.

The first connection part 154, the first redundancy part 159, and the first sensor electrodes 152a, 152b, and 152c are formed of the same material in the same layer. The first connection part 154, the first redundancy part 159, and the first sensor electrodes 152a, 152b, and 152c are formed as transparent electrodes on an insulating layer, and indium tin oxide (ITO) and IZO as transparent electrode materials. (Indium Zinc Oxide), ITZO (Indium Tin Zinc Oxide), ATO (Antimony Tin Oxide) can be formed of a material. In addition, the first bridge portion 156 and the first routing line 158 are made of metal, and the metal material is aluminum (Al), copper (Cu), silver (Ag), chromium (Cr), and molybdenum (Mo). , At least one metal of aluminum neodium (AlNd), molybdenum titanium (MoTi), or a laminate including at least one metal. The first bridge portion 156 may be formed as a single layer using a metal material or a transparent electrode material as shown in FIG. 5A, and as shown in FIG. 5B, the metal material 156a and the transparent electrode material ( 156b) may be formed of two layers stacked.

As illustrated in FIGS. 5A and 5B, the first bridge part 156 may form contact holes 252 and 254 in the passivation layer to connect with the first sensor electrodes 152a, 152b and 152c, but may be connected to the first bridge. The unit 156 may directly contact the first bridge unit 156 and the first sensor electrodes 152a, 152b, and 152c without forming a protective layer and a contact hole. Accordingly, the first bridge portion 156 and the second connection portion 164 are formed with the passivation layer interposed therebetween, and the first bridge portion 156 and the first electrodes 152a, 152b, and 152c are in direct contact without the passivation layer. do.

A plurality of second sensor electrode pattern parts are formed side by side in the second direction to detect a change in capacitance in the second direction. Here, the second direction may be, for example, the Y-axis direction. To this end, the second sensor electrode pattern portion is formed in the second direction on the same layer as the second sensor electrodes 162a, 162b and 162c having a rhombus shape or diamond shape and the second sensor electrodes 162a, 162b and 162c. To connect second sensor electrodes 162a, 162b, and 162c adjacent to each other, and second sensor electrodes 162a, 162b, and 162c adjacent to each other through contact holes 262 and 264. The second bridge unit 166 and M (where M is a natural number of two or more) combine the lines 168a and 168b of the second sensor electrodes into one line to supply the second sensing signal SS2. Two routing lines 168. In this case, the second routing line 168 combines the lines of the M second sensor electrodes into one line to supply a signal, but the odd-numbered (Yodd) second sensor electrodes 162a, 162b, and 162c are even-numbered. (Yeven) The second sensor electrodes 162a, 162b, and 162c are combined as one line to be described as an example.

In detail, the second sensor pad part 162a of one of the odd-numbered second sensor electrodes 162a, 162b, and 162c is upwardly adjacent to the second sensor electrode 162c and the second bridge part 166. ) Is connected through the second sensor electrode 162b and the second connecting portion 164 adjacent to the lower side. The second sensor electrode 162a of the even-even second sensor electrodes 162a, 162b, and 162c is connected to the second sensor electrode 162c adjacent to the upper side through the second connection part 164. The second sensor electrode 162b adjacent to the lower side is connected through the second bridge part 166.

The second bridge portion 166 and the first bridge portion 156 adjacent thereto are formed in opposite directions. That is, as shown in FIG. 2, the second bridge portion 166 and the first bridge portion 156 are alternately formed in the first or second direction. When the direction of the second bridge portion 166 is formed in the second direction, the direction of the first bridge portion 156 adjacent to the second bridge portion 166 may be formed in the X-axis direction, and the second bridge portion When the direction 166 is formed in the first direction, the direction of the first bridge portion 156 adjacent to the second bridge portion 166 may be formed in the second direction.

Here, the second connector 164 and the second sensor electrodes 162a, 162b, and 162c are formed of the same material in the same layer. The second connection part 164 and the second sensor electrodes 162a, 162b, and 162c are formed of a transparent electrode on an insulating layer, and as the transparent electrode materials, indium tin oxide (ITO) and indium zinc oxide (IZO) It may be formed of a material such as, ITZO (Indium Tin Zinc Oxide), ATO (Antimony Tin Oxide). In addition, the second bridge portion 166 and the second routing line 168 is made of a metal material, and the metal material is aluminum (Al), copper (Cu), silver (Ag), chromium (Cr), and molybdenum (Mo). , At least one metal of aluminum neodium (AlNd), molybdenum titanium (MoTi), or a laminate including at least one metal. As shown in FIG. 6A, the second bridge part 166 may be formed as a single layer using a metal material or a transparent electrode material. As shown in FIG. 6B, the metal material 166a and the transparent electrode material 166b may be formed. It can be formed of two layers in a stacked form.

6A and 6B, the second bridge part 166 may form contact holes 262 and 264 in the passivation layer to connect the second sensor electrodes 162a, 162b and 162c, but the second bridge 166 may be connected to the second bridge part 166. The unit 166 may directly contact the second bridge unit 166 and the second sensor electrodes 162a, 162b, and 162c without forming a protective layer and a contact hole. Accordingly, the second bridge portion 166 and the first connection portion 154 are formed with the passivation layer interposed therebetween, and the second bridge portion 166 and the second electrodes 162a, 162b, and 162c are in direct contact without the passivation layer. do.

As described above, the sensing area of one pixel SP with respect to the touch panel of the present invention is divided by the conventional sensing area of one pixel, thereby improving sensing power. Specifically, the sensor electrode in one sensing pixel for the conventional touch panel is formed of one sensor electrode that is the same as the touch area of the finger (or pointer). However, one sensing pixel SP according to the present invention has four sensing electrodes four times larger than the finger touch area and has four times the sensing force. That is, the touch sensing force in the unit cell is increased by dividing the unit cell. As such, the number of sensor electrodes increased, but the wiring did not increase by tying N sensor electrodes into one routing line. In addition, although the sensor electrode in the sensing pixel of the present invention has been described as 1/4 times the touch area of the finger, it can be formed as a sensor electrode further divided by 1 / n times.

FIG. 7 is an enlarged view of a region A illustrated in FIG. 3, and illustrates a signal flow when a failure occurs in the first bridge portion 156 or the second bridge portion 166 in one sensing pixel.

As shown in FIG. 7, a signal flow occurs when two first bridge portions 156 and one second bridge portion 166 formed in one sensing pixel SP have a scratch or open defect. Will be described.

A signal flow in which the first sensing signal SS1 in the X-axis direction is supplied through the first routing line 158 will be described first.

First, the first sensing signal SS1 in the X-axis direction is connected to the odd-numbered (Xodd) first sensor electrodes 152a, 152b, and 152c through the first routing line 158. To the fields 152a, 152b and 152c. As illustrated in FIG. 7, the first bridge part 156 connected to the odd-numbered first sensor electrodes 152a and 152b is defective, and thus the first sensing signal SS1 is generated by the odd-numbered (Xodd) agent. 1 cannot be supplied to the sensor electrode 152b.

Accordingly, the first sensing signal SS1 is supplied to the even-numbered first sensor electrode 152b, and the first sensing signal SS1 is supplied to the first redundancy unit 159 through the first connection unit 154. Is supplied.

In detail, in the odd-numbered first sensor electrode 152b connected through the first bridge part 156, the first bridge part 156 is disconnected or scratched, so that a signal is hardly transmitted. On the contrary, since the first connector 154 is formed of the same material as the first sensor electrode 152b, there is no problem in that the first sensing signal SS1 is supplied. In this case, since the first connection part 154 is formed of the same material as the even-numbered first sensor electrode 152b, the first connection part 154 is disconnected compared to the connected first bridge parts 156 formed by the contact holes 252 and 254. The probability of scratching or scratching is quite low.

Thereafter, the first sensing signal SS1 supplied to the first redundancy unit 159 is supplied to an odd-numbered (Xodd) first sensor electrode 152a connected to the first redundancy unit 159.

As such, since the first bridge portion 156 and the second bridge portion 166 adjacent thereto are formed in different directions, even if a defect occurs in the bridge portion vulnerable to static electricity and scratches, a touch operation is possible.

A signal flow in which the second sensing signal SS2 in the Y-axis direction is supplied through the second routing line 168 will be described.

First, the second sensing signal SS2 in the Y-axis direction is odd-numbered (Yodd) second sensor electrodes 162b and even-numbered (Yeven) second sensor electrodes 162b through the second routing line 168. Is supplied. As illustrated in FIG. 7, the second bridge part 166 connecting the odd second sensor electrodes 162a and 162c has not been defective, but the even second sensor electrodes ( Since the second bridge part 166 connecting the 162b and 162a is defective, the second sensing signal SS2 is transmitted to the odd-numbered second sensor electrodes 162a, 162b and 162c.

That is, the second sensing signal SS2 supplied to the odd-numbered second sensor electrode 162b is supplied to the second bridge portion 166 through the second connection portion 164.

8 is a plan view of a touch panel according to a second embodiment of the present invention.

The touch panel integrated display device according to the second exemplary embodiment of the present invention includes a liquid crystal panel and a touch panel mounted on the liquid crystal panel. At this time, the liquid crystal panel according to the second embodiment of the present invention is the same as the components of the liquid crystal panel according to the first embodiment of the present invention will be omitted.

The touch panel includes a sensor substrate 130 having first and second sensor electrode pattern portions functioning as position sensing electrodes, a cover substrate 132 formed to face the sensor substrate 130, and an upper portion of the liquid crystal panel 110. The first adhesive layer 120 formed on the polarizer 118 and the second adhesive layer 122 formed on the sensor substrate 130 are included.

The sensor substrate 130 includes a first sensor electrode pattern part, a second sensor electrode pattern part, and a sensor part FPC (FPC) 170.

Since the first sensor electrode pattern portion is the same as the first embodiment of the present invention, the description thereof will be omitted, and the second sensor electrode pattern portion will be described with reference to region B and region C shown in FIG. 8.

A plurality of second sensor electrode pattern parts are formed side by side in the second direction to detect a change in capacitance in the second direction. Here, the second direction may be, for example, the Y-axis direction. To this end, the second sensor electrode pattern portion is formed in the second direction on the same layer as the second sensor electrodes 162a, 162b and 162c having a rhombus shape or diamond shape and the second sensor electrodes 162a, 162b and 162c. To connect the second sensor electrodes 162a, 162b, and 162c adjacent to each other, and the second sensor electrodes 162a, 162b, and 162c adjacent to each other through contact holes 262 and 264. A second bridge portion 166 and second sensor electrodes 162a, 162b, and 162c formed on the same layer in a first direction to connect adjacent second sensor electrodes 162a, 162b, and 162c to each other; Second routing for supplying the second sensing signal SS2 by combining the redundancy unit 159 and the lines 168a and 168b of the M second sensor electrodes where M is a natural number of two or more in one line. Line 168. In this case, the second routing line 168 combines the lines of the M second sensor electrodes into one line to supply a signal, but the odd-numbered (Yodd) second sensor electrodes 162a, 162b, and 162c are even-numbered. (Yeven) The second sensor electrodes 162a, 162b, and 162c are combined as one line to be described as an example.

The second bridge portion 166 and the first bridge portion 156 adjacent thereto are formed in opposite directions. That is, the second bridge portion 166 and the first bridge portion 156 are alternately formed in the first direction or the second direction. When the direction of the first bridge portion 156 is formed in the first direction, the direction of the second bridge portion 166 adjacent to the first bridge portion 156 may be formed in the second direction. According to the exemplary embodiment of the present invention, only the first bridge portion 156 is formed in the first direction and the second bridge portion 166 is formed in the second direction. Direction may be formed in the second direction, and the direction of the second bridge portion 166 may be formed in the first direction. In this case, the first direction may be the X-axis direction, and the second direction may be the Y-axis direction. Alternatively, the first direction may be the Y-axis direction, and the second direction may be the X-axis direction.

Here, the second connection part 164, the second redundancy part 169, and the second sensor electrodes 162a, 162b, and 162c are formed of the same material in the same layer. The second connection part 164, the second redundancy part 169, and the second sensor electrodes 162a, 162b, and 162c are formed of a transparent electrode on an insulating layer, and indium tin oxide (ITO) as a transparent electrode material. ), Indium zinc oxide (IZO), indium tin zinc oxide (ITZO), and antimony tin oxide (ATO). In addition, the second bridge portion 166 and the second routing line 168 is made of a metal material, and the metal material is aluminum (Al), copper (Cu), silver (Ag), chromium (Cr), and molybdenum (Mo). , At least one metal of aluminum neodium (AlNd), molybdenum titanium (MoTi), or a laminate including at least one metal. As shown in FIG. 6A, the second bridge part 166 may be formed as a single layer using a metal material or a transparent electrode material. As shown in FIG. 6B, the metal material 166a and the transparent electrode material 166b may be formed. It can be formed of two layers in a stacked form.

6A and 6B, the second bridge portion 166 may form contact holes 262 and 264 in the passivation layer to connect the second sensor electrodes 162a, 162b and 162c, but may not be connected to the second bridge 166. The unit 166 may directly contact the second bridge unit 166 and the second sensor electrodes 162a, 162b, and 162c without forming a protective layer and a contact hole. Accordingly, the second bridge portion 166 and the first connection portion 154 are formed with the passivation layer interposed therebetween, and the second bridge portion 166 and the second electrodes 162a, 162b, and 162c are in direct contact without the passivation layer. do.

As such, the redundancy portion may be formed only on the first sensing electrode pattern portion as in the first embodiment of the present invention, and the redundancy portion may be formed on both the first and second sensing electrode pattern portions as in the second embodiment of the present invention. have.

Since the region A according to the second embodiment of the present invention is the same except for the second redundancy portion of the region A of the first embodiment of the present invention, a description thereof will be omitted, and a signal flow chart of the region B according to the case where the second redundancy portion is formed will be described. Let's do it.

FIG. 9 is an enlarged view of region C illustrated in FIG. 8, and is a plan view illustrating signal flow when a failure occurs in the first bridge portion 156 or the second bridge portion 166 in the region C. Referring to FIG.

As illustrated in FIG. 9, a signal flow according to a case where a scratch or open defect occurs in the first bridge portion 156 and the second bridge portion 166 formed in the sensing pixel will be described.

A signal flow in which the second sensing signal SS2 in the Y-axis direction is supplied through the second routing line 168 will be described first.

First, the second sensing signal SS2 in the Y-axis direction may be odd-numbered (Yodd) second sensor electrodes 162a and 162c and even-numbered (Yeven) second sensor electrodes through the second routing line 168. 162a, 162c. As shown in FIG. 9, the second bridge part 166 connected to the odd-numbered second sensor electrodes 162a and 162c is defective, and the second sensing signal SS2 is the odd-numbered odd-numbered yod. It cannot be supplied to the two sensor electrode portions 162a and 162c.

Accordingly, the second sensing signal SS2 is supplied to the even-numbered second sensor electrodes 162a and 162c, and the second sensing signal SS2 is supplied to the second redundancy unit through the second connection unit 164. Supplied to 169.

In detail, in the odd-numbered second sensor electrodes 162a and 162c connected through the second bridge portion 166, the second bridge portion 166 may be disconnected or scratched so that the second bridge portion 166 may be formed. Through the second sensing signal SS2 is difficult to be transmitted. On the contrary, since the second connector 164 is formed of the same material as the second sensor electrodes 162a and 162c, the second sensing signal SS2 is not provided. At this time, since the second connection part 164 is formed of the same material as the second sensor electrode, the probability of disconnection or scratch is definitely lower than that of the second bridge part 166 connected through the contact holes 262 and 264.

Thereafter, the second sensing signal SS2 supplied to the second redundancy unit 169 is supplied to an odd-numbered second sensor electrode 162a connected to the second redundancy unit 169.

As described above, since the redundancy parts 159 and 169 are formed in both the first sensor electrode pattern part and the second sensor electrode pattern part, touch detection is possible even when a defect occurs in the first or second bridge parts 156 and 166. The defective rate of can be further reduced.

In addition, the first sensing signal SS1 in the X-axis direction is supplied to the first redundancy unit 159 through the first connection unit 154.

As such, since the second bridge portion and the first bridge portion adjacent thereto are formed in different directions, the touch operation may be performed even when a failure occurs in the bridge portion vulnerable to static electricity and scratches.

The foregoing description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention. Therefore, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed by the claims below, and all techniques within the scope equivalent thereto will be construed as being included in the scope of the present invention.

110: liquid crystal panel 112: upper substrate
114: lower substrate 116: lower polarizing plate
118: upper polarizing plate 120, 122: first and second adhesive layer
130: sensor substrate 132: cover substrate
152a, 152b, 152c: first sensor electrode 154: first connection portion
156: first bridge portion 158: first routing line
159: first redundancy unit 162a, 162b, 162c: second sensor electrode
164: second connection portion 166: second bridge portion
168: second routing line 169: second redundancy unit
170: sensor unit FPC

Claims (11)

A plurality of first sensor electrodes are formed on the display panel to display an image in a first direction and connect the first sensor electrodes sensing the touch in the first direction and the adjacent first sensor electrodes in the first direction or the second direction. A first sensor electrode pattern portion including first bridge portions;
A plurality of second sensor electrodes are formed on the substrate in parallel in a second direction to sense a touch in a second direction, and are formed in a direction perpendicular to the first bridge portion, and the adjacent second sensor electrodes are formed in a second direction. And a second sensor electrode pattern part including a second sensor electrode pattern part including second bridge parts to be connected thereto. The method of claim 1,
And wherein the first bridge portion connects the first sensor electrodes adjacent to each other through a contact hole, and the second bridge portion connects the second sensor electrodes adjacent to each other through a contact hole. The method of claim 2,
And the first and second bridge portions are formed in one layer using a metal material or a transparent electrode material, or in two layers stacked in a metal material and a transparent electrode material. The method of claim 1,
The first sensor electrode pattern portion
A first connection part formed on the same layer as the first sensor electrodes in the first direction to connect adjacent first sensor electrodes to each other;
A first redundancy unit formed in the second direction on the same layer as the first sensor electrodes and connecting the first sensor electrodes adjacent to each other;
And a first routing line for supplying a signal by combining the lines of N (where N is two or more natural numbers) first sensor electrodes into one line. The method of claim 1,
The second sensor electrode pattern portion
A second connection part formed on the same layer as the second sensor electrodes in the second direction and connecting the first sensor electrodes adjacent to each other;
And a second routing line for supplying a signal by combining the lines of M (here, M is two or more natural numbers) second sensor electrodes into one line. The method according to claim 4 or 5,
And the first bridge portion and the second connection portion are formed with a passivation layer therebetween, and the first bridge portion and the first sensor electrodes are formed to be in direct contact with each other. The method according to claim 4 or 5,
And the second bridge portion and the first connection portion are formed with a passivation layer therebetween, and the second bridge portion and the second sensor electrodes are formed to be in direct contact with each other. The method of claim 5,
The second sensor electrode pattern portion
And a second redundancy unit formed on the same layer as the second sensor electrodes in the first direction and connecting the second sensor electrodes adjacent to each other. A plurality of first sensor electrodes are formed on the substrate side by side in a first direction to sense a touch in a first direction, and first bridge parts connecting the adjacent first sensor electrodes in a first direction or a second direction. A first sensor electrode pattern portion comprising;
A plurality of second sensor electrodes are formed on the substrate in parallel in a second direction to sense a touch in a second direction, and are formed in a direction perpendicular to the first bridge portion, and the adjacent second sensor electrodes are formed in a second direction. And a second sensor electrode pattern portion including a second sensor electrode pattern portion including second bridge portions to connect therewith. 10. The method of claim 9,
And the first bridge part connects the first sensor electrodes adjacent to each other through a contact hole, and the second bridge part connects the second sensor electrodes adjacent to each other through a contact hole. 10. The method of claim 9,
And the first bridge portion is in direct contact with the first sensor electrodes, and the second bridge portion is formed in direct contact with the second sensor electrodes.

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