KR20190072940A - Array Substrate For Touch Display Device And Method Of Fabricating The Same - Google Patents

Abstract

The present invention provides an array substrate for a touch display device, comprising: a substrate which includes a display area including pixels and a non-display area located around the display area; a gate line, a data line, and a touch common line which are placed in the upper part of the substrate and define the pixels by crossing one another; a thin film transistor which is connected to the gate line and the data line and includes a semiconductor layer, a gate electrode, a source electrode, and a drain electrode; a touch common electrode which is connected to the touch common line; a pixel electrode which is connected to the thin film transistor; and a plurality of panel capacitors which are placed in the non-display area in the upper part of the substrate, and include an upper electrode and a lower electrode formed of the same layer and the same material as two among the gate electrode, the source electrode, the drain electrode, the touch common line, and the pixel electrode. Therefore, the array substrate for a touch display device and the manufacturing method thereof can improve design freedom and reduce manufacturing costs thereof.

Description

[0001] The present invention relates to an array substrate for a touch display device,

The present invention relates to an array substrate for a touch display device, and more particularly, to an array substrate for a touch display device in which a plurality of panel capacitors connected to a touch data driver are formed on a touch display panel, And a manufacturing method thereof.

In view of the information age, the display field has also been rapidly developed. As a flat panel display device (FPD) having the advantages of thinning, light weight, and low power consumption in response to the information age, ), A plasma display panel device (PDP), an organic light emitting diode (OLED) display device, and a field emission display device (FED) cathode ray tube (CRT).

Recently, a touch display device (or a touch screen) having a touch panel mounted on a display panel has been spotlighted.

The touch display device is used as an output means for displaying an image and is used as input means for inputting a user's command by touching a specific portion of the displayed image. The touch panel of the touch- A pressure reduction method, an electrostatic method, an infrared method, and an ultrasonic method.

That is, when the user touches the touch panel while viewing the image displayed on the display panel, the touch panel can detect the position information of the corresponding part and compare the detected position information with the position information of the image to recognize the user's command.

Such a touch display device can be manufactured in such a manner that a separate touch panel is attached to a display panel or a touch panel is formed on a substrate of a display panel so as to be integrated with each other. Recently, the slimming of a portable terminal such as a smart phone, a tablet PC, An in-cell type in which the touch panel and the display panel are integrated by using an electrode or wiring used in the hazard display panel as an electrode or wiring of the touch panel or by forming an electrode or wiring of the touch panel on the display panel, The demand for touch display devices is increasing.

The touch panel includes a touch panel for displaying an image and sensing a touch, and a driver for supplying a plurality of signals to the touch panel. The touch panel includes a driving unit for stabilizing an input voltage, Lt; RTI ID = 0.0 > capacitors. ≪ / RTI >

The driving unit may be formed in the form of a printed circuit board (PCB) or a flexible printed circuit (FPC) including a driving integrated circuit (DIC), and a plurality of stabilization capacitors May be mounted on a printed circuit board or a flexible printed circuit and connected to a drive integrated circuit.

However, since a plurality of stabilizing capacitors are mounted on the printed circuit board or the flexible printed circuit, a large number of stabilizing capacitors act as a cause of space limitation of the printed circuit board or the flexible printed circuit, thereby reducing the design freedom of the driving portion, The manufacturing cost is increased.

In addition, since the size of the printed circuit board or the flexible printed circuit is increased by a plurality of stabilizing capacitors, the increase in size of the printed circuit board or the flexible printed circuit may cause a decrease in the space for the battery when the touch display device is applied to a portable terminal There is a problem that the use time of the portable terminal is shortened.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and it is an object of the present invention to provide an array for a touch display device in which a plurality of panel capacitors connected to a touch data driver are formed in a non-display area of a touch display panel, And a method of manufacturing the same.

In the present invention, a plurality of panel capacitors are formed in a non-display region using the same layer, the same conductive layer, and the same dielectric layer as the display region of the touch display panel, thereby reducing the size of the touch data driver, Another object of the present invention is to provide an array substrate for a touch display device and a method of manufacturing the same, in which space for a battery of a portable terminal to be applied is increased and use time of the portable terminal is increased.

According to an aspect of the present invention, there is provided a display device including: a substrate including a display region including a pixel and a non-display region around the display region; A thin film transistor connected to the gate wiring and the data wiring and including a semiconductor layer, a gate electrode, a source electrode, and a drain electrode; a touch common electrode connected to the touch common wiring; A pixel electrode connected to the thin film transistor; and a plurality of pixel electrodes arranged in the non-display region above the substrate and each having the same layer as the gate electrode, the source electrode and the drain electrode, An array substrate for a touch display device including a plurality of panel capacitors including an upper electrode and a lower electrode made of the same material, The.

A gate insulating layer is disposed between the semiconductor layer and the gate electrode. An interlayer insulating layer is disposed between the gate electrode and the source electrode and the drain electrode. The source electrode, the drain electrode, A first passivation layer may be disposed between the touch common wiring and the touch common electrode, and a second passivation layer may be disposed between the touch common electrode and the pixel electrode.

The plurality of panel capacitors may include a first lower electrode formed of the same layer and the same material as the gate electrode, the interlayer insulating layer, a first upper layer made of the same material as the source electrode and the drain electrode, A second lower electrode made of the same material as the source electrode and the drain electrode and made of the same material; and a second lower electrode made of the same material as the touch common interconnection, A third lower electrode made of the same material as the touch common wiring and made of the same material; and a second lower electrode made of the same material and the same material as the first and second protective layers, And a third upper electrode.

The array substrate for a touch display device includes a gate pad disposed in the non-display region of the substrate and connected to the gate wiring, the gate pad being formed of the same layer and the same material as the gate electrode, A gate pad electrode connected to the gate pad and formed of the same layer and the same material as the pixel electrode; and a gate electrode disposed in the non-display region of the substrate and connected to the data line, And a data pad electrode disposed on the second passivation layer and connected to the data pad and being formed of the same layer and the same material as the pixel electrode, have.

The plurality of panel capacitors may be connected to a touch data driver for supplying a data voltage to the data lines.

The array substrate for a touch display device may further include a gate driver arranged in the non-display region of the substrate and supplying a gate voltage to the gate line.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: forming a gate wiring, a data wiring, and a touch common wiring crossing each other on a substrate including a display region and a non-display region to define a pixel; Forming a thin film transistor including a semiconductor layer, a gate electrode, a source electrode, and a drain electrode; forming a touch common electrode connected to the touch common wiring; forming a pixel electrode connected to the thin film transistor The source electrode and the drain electrode, the touch common wiring, the same layer as two of the pixel electrodes, the upper electrode made of the same material, and the lower electrode and the lower electrode, respectively, in the non-display region on the substrate. And forming a plurality of panel capacitors including the plurality of panel capacitors, .

The manufacturing method of an array substrate for a touch display device according to the present invention includes the steps of: forming a gate insulating layer between the semiconductor layer and the gate electrode; forming an interlayer insulating layer between the gate electrode and the source electrode and the drain electrode Forming a planarization layer between the source electrode and the drain electrode and the touch common wiring; forming a first passivation layer between the touch common wiring and the touch common electrode; And forming a second passivation layer between the electrode and the pixel electrode.

The forming of the plurality of panel capacitors may include forming a first lower electrode of the same layer and the same material as the gate electrode and a second lower electrode of the same layer and the same material as the source electrode and the drain electrode, A second lower electrode made of the same material as the source electrode and the drain electrode, the second lower electrode made of the same material, the planarization layer, and the same as the touch common wiring A third lower electrode made of the same material as the touch common wiring and made of the same material, and a second lower electrode made of the same material, And forming a third panel capacitor composed of the same layer as the pixel electrode and a third upper electrode made of the same material.

The method of manufacturing an array substrate for a touch display device includes the steps of forming a gate pad which is disposed in the non-display region of the substrate and is connected to the gate wiring and is formed of the same layer and the same material as the gate electrode; Forming a gate pad electrode on the second passivation layer, the gate pad electrode being connected to the gate pad and having the same layer and the same material as the pixel electrode; Forming a data pad connected to the data line and made of the same layer and the same material as the source electrode and the drain electrode; and a data pad disposed on the second passivation layer and connected to the data pad, And forming a data pad electrode composed of the same layer and the same material.

According to the present invention, a plurality of panel capacitors connected to the touch data driver are formed in the non-display area of the touch display panel, thereby improving the degree of design freedom and reducing the manufacturing cost.

In the present invention, a plurality of panel capacitors are formed in a non-display region using the same layer, the same conductive layer, and the same dielectric layer as the display region of the touch display panel, thereby reducing the size of the touch data driver, The space for the battery of the portable terminal to be applied is increased and the use time of the portable terminal is increased.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram illustrating a touch display apparatus according to an embodiment of the present invention. Fig.
2 is a view showing an array substrate for a touch display device according to an embodiment of the present invention.
3A to 3H are views for explaining a method of manufacturing an array substrate for a touch display device according to an embodiment of the present invention.

Hereinafter, a touch display device and a manufacturing method thereof according to the present invention will be described with reference to the accompanying drawings.

1 is a view illustrating a touch display device according to an embodiment of the present invention.

1, the touch display apparatus 110 according to the embodiment of the present invention includes a timing controller 120, a touch data driver 122, a gate driver 124, and a touch panel 126 The touch display device 110 may be an organic light emitting diode (OLED) display device or a liquid crystal display device (LCD) device.

The touch display device 110 according to the embodiment of the present invention is driven by dividing one frame into a display period and a touch period. During the display period, the data line DL, the gate line GL, A gate voltage, and a common voltage are applied to the touch common wiring TL to display an image, a touch transmission voltage is applied to the touch common wiring TL during the touch period, The voltage is read and the touch is detected.

The timing controller 120 receives a video signal IS transmitted from an external system such as a graphic card or a TV system and a data enable signal DE, a horizontal synchronizing signal HSY, a vertical synchronizing signal VSY, a clock CLK And a gate control signal GCS are generated by using a plurality of timing signals such as a timing control signal DCS and a timing control signal DCS to generate image data RGB, a data control signal DCS and a gate control signal GCS, And transmits the generated gate control signal GCS to the gate driver 124. The gate driver 124 receives the gate control signal GCS.

The touch data driver 122 generates a data voltage (data signal) by using the video data RGB and the data control signal DCS transmitted from the timing controller 120 and supplies the generated data voltage to the touch display panel 126 to the data line DL.

The touch data driver 122 generates a common voltage and a touch transmission voltage and applies the common voltage and the touch transmission voltage to the touch common wiring TL of the touch display panel 126 and the touch common wiring TL from the touch common wiring TL of the touch display panel 126 And reads the touch reception voltage.

The gate driver 124 generates a gate voltage (gate signal) using the gate control signal GCS transmitted from the timing controller 120 and supplies the generated gate voltage to the gate wiring GL of the touch display panel 126 .

Here, the gate driver 124 is a gate-in which is formed together with the array substrate of the touch display panel 126 on which the gate line GL, the data line DL, the touch wiring TL and the pixel P are formed. - Explain the panel (gate in panel: GIP) as an example.

The GIP type gate driver 124 may include a shift register, each of which includes a plurality of stages for outputting a gate voltage, and a plurality of stages each having an output voltage of the present stage And can be connected in a cascade manner input to the other stage.

The touch display panel 126 displays an image using a data voltage, a gate voltage, and a common voltage, and senses a touch using a touch transmission voltage and a touch reception voltage. The touch display panel 126 includes a gate Each of the pixels P includes a thin film transistor T connected to the gate wiring GL and the data wiring DL and a thin film transistor T connected to the gate wiring GL and the data wiring DL. And a storage capacitor Cl and a storage capacitor Cs connected to the storage capacitor T. [

The gate line GL is connected to the gate driver 124 through the gate pad 138 and the data line DL is connected to the touch data driver 122 through the data pad 148.

In another embodiment in which the touch display device 110 is an organic light emitting diode display device, the pixel P of the touch display panel 126 may include a switching thin film transistor, a driving thin film transistor, a storage capacitor, and a light emitting diode.

Here, the touch display panel 126 includes a display area DA in which a plurality of pixels P are arranged, a gate driver 124, a gate pad 138, a data pad 148, And a non-display area (NDA).

Particularly, the first to third panel capacitors Cp1 to Cp3 used as the stabilization capacitors of the touch data driver 122 are disposed in the non-display area NDA of the touch display panel 126. [

For example, the touch data driver 122 may be formed in the form of a printed circuit board (PCB) or a flexible printed circuit (FPC) including a driving integrated circuit (DIC) The first to third panel capacitors Cp1 to Cp3 are formed in the same process as the gate wiring GL, the data wiring DL, the touch common wiring TL, the thin film transistor T and the storage capacitor Cs And may be connected to a printed circuit board or a driving integrated circuit of a flexible printed circuit through a plurality of connection wirings.

As described above, in the touch display device 110 according to the embodiment of the present invention, a plurality of stabilization capacitors Cp1 to Cp3 are formed in the non-display area NDA of the touch display panel 110 and a plurality of stabilization capacitors Cp1 To Cp3) is connected to a printed circuit board or a driving integrated circuit of the flexible printed circuit, the free space of the printed circuit board or the flexible printed circuit can be expanded to improve the degree of design freedom, and the printed circuit board or the flexible printed circuit The manufacturing cost can be reduced by omitting the stabilizing capacitor.

The size of the printed circuit board or the flexible printed circuit of the touch data driver 122 may be reduced by omitting the stabilizing capacitor mounted on the printed circuit board or the flexible printed circuit so that the battery of the portable terminal to which the touch display device 110 is applied So that the use time of the portable terminal can be increased.

The structure of the array substrate for the touch display device 110 will be described with reference to the drawings.

Fig. 2 is a view showing an array substrate for a touch display device according to an embodiment of the present invention, which will be described with reference to Fig. 1. Fig.

2, the array substrate for a touch display device according to the embodiment of the present invention includes a thin film transistor T in a display area DA, a gate pad 138 in a non-display area NDA, Pad 148 and first through third panel capacitors Cp1 through Cp3.

A semiconductor layer 132 is disposed on the pixel P of the display region DA above the substrate 130 and a gate insulating layer 134 is disposed on the entire surface of the substrate 130 above the semiconductor layer 132 do.

Although not shown, a light shielding pattern may be disposed under the semiconductor layer 132.

The semiconductor layer 132 may be formed of amorphous silicon or polycrystalline silicon and may include an active region of pure silicon at the central portion and a source region and a drain region of impurity silicon at both ends.

A gate insulating layer 134 may be made of an inorganic insulating material such as silicon oxide (SiO _2), silicon nitride (SiNx), silicon oxynitride (SiON).

The gate electrode 136 is disposed on the gate insulating layer 134 corresponding to the semiconductor layer 132 and the gate pad 138 and the first lower electrode 140 are formed on the gate insulating layer 134 of the non- 140 are disposed.

The gate electrode 136 is connected to the gate wiring GL and the gate pad 138 is connected to one end of the gate wiring GL. The gate electrode 136, the gate pad 138 and the first lower electrode 140 ) May be made of the same layer or the same material, and may be made of, for example, a metal material.

An interlayer insulating layer 142 is disposed on the entire surface of the substrate 130 on the gate electrode 136, the gate pad 138 and the first lower electrode 140. The interlayer insulating layer 142 is formed on the entire surface of the semiconductor layer 132 And has a source contact hole 142a and a drain contact hole 142b which expose the source region and the drain region.

An interlayer insulating layer 142, silicon oxide (SiO _2), the organic insulation, such as silicon nitride (SiNx), oxide inorganic insulating material such as silicon nitride (SiON) or photo acryl (photo acryl), benzocyclobutene (benzocyclobutene) ≪ / RTI >

A source electrode 144 and a drain electrode 146 are disposed on the upper part of the interlayer insulating layer 142 corresponding to the semiconductor layer 132 and a data pad 148 is formed on the upper part of the interlayer insulating layer 142 in the non- A first upper electrode 150, and a second lower electrode 152 are disposed.

The source electrode 144 and the drain electrode 146 are connected to the source region and the drain region of the semiconductor layer 132 through the source contact hole 142a and the drain contact hole 142b respectively and the first upper electrode 150, The source electrode 144, the drain electrode 146, the data pad 148, the first upper electrode 150, and the second lower electrode 152 are disposed to correspond to the first lower electrode 140, , The same material, for example, a metal material.

The first lower electrode 140, the interlayer insulating layer 142, and the first upper electrode 150 constitute a first panel capacitor Cp1.

Although not shown, the source electrode 144 may be connected to the data line DL, and the first lower electrode 140 and the first upper electrode 150 may be connected to the touch data driver 122 through connection wirings.

A planarization layer 154 is disposed on the entire surface of the substrate 130 above the source electrode 144, the drain electrode 146, the data pad 148, the first upper electrode 150 and the second lower electrode 152.

Organic insulating material, such as a planarization layer 154, a silicon oxide (SiO _2), silicon nitride (SiNx), an inorganic insulating material such as silicon oxynitride (SiON) or photo acryl (photo acryl), benzocyclobutene (benzocyclobutene) ≪ / RTI >

The touch common wiring TL is disposed on the pixel P in the display area DA on the planarization layer 154 and the second upper electrode 154 is formed on the planarization layer 154 corresponding to the second lower electrode 152. [ And the third lower electrode 158 is disposed in the non-display area NDA above the planarization layer 154. [

The touch common wiring TL, the second upper electrode 156, and the third lower electrode 158 may be formed of the same material and the same material, for example, a metal material.

The second lower electrode 152, the planarization layer 154, and the second upper electrode 156 constitute a second panel capacitor Cp2.

The first passivation layer 160 is disposed on the entire surface of the substrate 130 above the touch common line TL, the second upper electrode 156 and the third lower electrode 158. The first passivation layer 160 is formed by a touch And a touch common contact hole 160a exposing the common wiring TL.

A plate-shaped touch common electrode 162 is disposed on the first passivation layer 160 of the pixel P of the display area DA. The touch common electrode 162 is connected to the touch common contact hole 160a To the touch common wiring TL, and may be formed of a metal material or a transparent conductive material.

A second protective layer 164 is disposed on the entire surface of the substrate 130 above the touch common electrode 162.

The first and second passivation layers 160 and 164 may be formed of an inorganic insulating material such as silicon oxide (SiO ₂ ), silicon nitride (SiN x), silicon oxynitride (SiON), or a photoacid such as photo acryl, benzocyclobutene ). ≪ / RTI >

The second passivation layer 164, the first passivation layer 160 and the planarization layer 154 are formed on the drain electrode contact hole 164a exposing the drain electrode 146 and the data pad contact hole 164a exposing the data pad 148. [ The first passivation layer 160, the planarization layer 154 and the interlayer insulating layer 142 have a gate pad contact hole 164b exposing the gate pad 138. The second passivation layer 164, the first passivation layer 160, Respectively.

The pixel electrode 166 is disposed above the second passivation layer 164 of the pixel P of the display area DA and corresponds to the gate pad 138, the data pad 148 and the third lower electrode 158 A gate pad electrode 168, a data pad electrode 170, and a third upper electrode 172 are disposed on the second passivation layer 164, respectively.

The pixel electrode 166 has a plurality of bar shapes including a plurality of openings exposing the lower touch common electrode 1620.

The pixel electrode 166, the gate pad electrode 168, the data pad electrode 170 and the third upper electrode 172 may be formed of the same material or the same material and may be formed of a metal material or a transparent conductive material have.

The pixel electrode 166 is connected to the drain electrode 146 through the drain electrode contact hole 146 and the gate pad electrode 168 is connected to the gate pad 138 through the gate pad contact hole 164b, The pad electrode 170 is connected to the data pad 148 through the data pad contact hole 164c.

The third lower electrode 158, the first and second passivation layers 160 and 164 and the third upper electrode 172 constitute a third panel capacitor Cp3.

As described above, in the touch display device 110 according to the embodiment of the present invention, the gate electrode 136, the source electrode 144 and the drain electrode 146 of the display area DA of the touch display panel 110, Display area NDA of the touch display panel 110 by using the same layer as at least two of the touch common wiring TL and the pixel electrode 166, the lower electrode and the upper electrode made of the same material, and the dielectric layer therebetween. A plurality of stabilization capacitors Cp1 to Cp3 are formed and a plurality of stabilization capacitors Cp1 to Cp3 are connected to a printed circuit board or a driving integrated circuit of the flexible printed circuit to enlarge the free space of the printed circuit board or the flexible printed circuit (For example, a stabilizing capacitor of about 1 μF, about 6.3 V to about 10 V, a stabilizing capacitor of about 0.33 mm to about 0.35 mm) mounted on a printed circuit board or a flexible printed circuit can be omitted, To save The.

The size of the printed circuit board or the flexible printed circuit of the touch data driver 122 may be reduced by omitting the stabilizing capacitor mounted on the printed circuit board or the flexible printed circuit so that the battery of the portable terminal to which the touch display device 110 is applied So that the use time of the portable terminal can be increased.

2, the first panel capacitor Cp1 is composed of the first lower electrode 140, the interlayer insulating layer 142, and the first upper electrode 150, and the second panel capacitor Cp2 is formed of the second The third panel capacitor Cp3 is composed of the third lower electrode 158 and the first and second passivation layers 160 and 164 And the third upper electrode 172. In another embodiment, the first lower electrode 140, the interlayer insulating layer 142, the planarization layer 154, and the first lower electrode 140 The second upper electrode 156 may be formed as a separate panel capacitor or the first lower electrode 140, the interlayer insulating layer 142, the planarization layer 154 and the first and second passivation layers 160 and 164 And the third upper electrode 172 overlapped with the first lower electrode 140 or the second lower electrode 152 and the planarization layer 154 and the first and second protection layers 160 and 164 and a third upper electrode 172 overlapping the second lower electrode 152, As it may be formed separately of the panel capacitor.

A manufacturing method of the array substrate for the touch display device 110 will be described with reference to the drawings.

3A to 3H are views for explaining a method of manufacturing an array substrate for a touch display device according to an embodiment of the present invention, and will be described with reference to FIGS. 1 and 2. FIG.

3A, a semiconductor layer 132 is formed on a pixel P in a display area DA above a substrate 130 through a deposition process of a semiconductor material and a photolithographic process, A gate insulating layer 134 is formed on the entire surface of the substrate 130 above the semiconductor layer 132.

A gate electrode 136 is formed on the gate insulating layer 134 corresponding to the semiconductor layer 132 through a process of depositing a metal material and a process of etching and exposing the gate insulating layer 134 A gate pad 138 and a first lower electrode 140 are formed.

The gate pad 136, the gate pad 138, and the substrate 130 on the first lower electrode 140 are formed through a process of depositing an inorganic insulating material or an organic insulating material and an exposure and etching process, An interlayer insulating layer 142 having a source contact hole 142a and a drain contact hole 142b exposing the source region and the drain region of the semiconductor layer 132 is formed on the entire surface.

A source contact hole 142a and a drain contact hole 142b are formed on the interlayer insulating layer 142 of the pixel P of the display area DA through a metal material deposition process and an exposure and etching process, A source electrode 144 and a drain electrode 146 which are respectively connected to the source region and the drain region of the semiconductor layer 132 are formed through the insulating layers 142a and 142b, The pad 148 and the second lower electrode 152 are formed and the first upper electrode 150 is formed on the interlayer insulating layer 142 corresponding to the first lower electrode 140.

The first lower electrode 140, the interlayer insulating layer 142, and the first upper electrode 150 constitute a first panel capacitor Cp1.

The source electrode 144, the drain electrode 146, the data pad 148, the first upper electrode 150, and the second lower electrode 150 are formed through a process of depositing an inorganic insulating material or an organic insulating material, A planarization layer 154 is formed on the entire surface of the substrate 130 above the electrode 152.

A touch common wiring TL is formed on the pixel P in the display area DA above the planarization layer 154 through a metal material deposition process and an exposure etching process and is formed on the second lower electrode 152 A second upper electrode 156 is formed on the corresponding planarization layer 154 and a third lower electrode 158 is formed on the non-display area NDA above the planarization layer 154.

The second lower electrode 152, the planarization layer 154, and the second upper electrode 156 constitute a second panel capacitor Cp2.

The second upper electrode 156 and the third lower electrode 158 are formed through a process of depositing an inorganic insulating material or an organic insulating material and an exposure and etching process as shown in FIG. The first passivation layer 160 having the touch common contact hole 160a exposing the touch common line TL is formed on the entire surface of the first insulating layer 130.

A touch common contact hole 160a is formed on the first passivation layer 160 of the pixel P of the display area DA through a process of depositing a metal material or a transparent conductive material and an exposure etch process, To form a touch common electrode 162 connected to the touch common wiring TL.

3G, the second passivation layer 164 is formed on the entire surface of the substrate 130 above the touch common electrode 162 through a process of depositing an inorganic insulating material or an organic insulating material and an exposure etch process. In this case, The second passivation layer 164, the first passivation layer 160 and the planarization layer 154 are formed on the drain electrode contact hole 164a exposing the drain electrode 146 and the data pad contact hole 164a exposing the data pad 148. [ The first passivation layer 160, the planarization layer 154 and the interlayer insulating layer 142 have a gate pad contact hole 164b exposing the gate pad 138. The second passivation layer 164, the first passivation layer 160, Respectively.

A pixel electrode 166 is formed on the second protective layer 164 of the pixel P of the display area DA through a deposition process and an exposure and etching process of a metal material or a transparent conductive material, And a gate pad electrode 168, a data pad electrode 170, and a gate electrode 168 are formed on the second passivation layer 164 corresponding to the gate pad 138, the data pad 148 and the third lower electrode 158, respectively. 3 upper electrode 172 are formed.

The pixel electrode 166 is connected to the drain electrode 146 through the drain electrode contact hole 146 and the gate pad electrode 168 is connected to the gate pad 138 through the gate pad contact hole 164b, The pad electrode 170 is connected to the data pad 148 through the data pad contact hole 164c.

The third lower electrode 158, the first and second passivation layers 160 and 164 and the third upper electrode 172 constitute a third panel capacitor Cp3.

As described above, in the touch display device 110 according to the embodiment of the present invention, the gate electrode 136, the source electrode 144 and the drain electrode 146 of the display area DA of the touch display panel 110, Display area 110 of the touch display panel 110 by using the same layer, lower electrode and upper electrode made of the same material and a dielectric layer therebetween through the same process as at least two of the touch common line TL and the pixel electrode 166. [ By forming a plurality of stabilization capacitors Cp1 to Cp3 in the NDA and connecting the plurality of stabilization capacitors Cp1 to Cp3 to the printed circuit board or the driving integrated circuit of the flexible printed circuit, (For example, stabilizing capacitors of about 1 μF, about 6.3 V to about 10 V, about 0.33 mm to about 0.35 mm) mounted on a printed circuit board or a flexible printed circuit Manufacture by omission The cost can be reduced.

The size of the printed circuit board or the flexible printed circuit of the touch data driver 122 may be reduced by omitting the stabilizing capacitor mounted on the printed circuit board or the flexible printed circuit so that the battery of the portable terminal to which the touch display device 110 is applied So that the use time of the portable terminal can be increased.

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 as defined in the appended claims. It can be understood that

110: touch display device 120: timing control unit
122: touch data driver 124: gate driver
126: touch display panel 138: gate pad
148: Data Pad
Cp1, Cp2, Cp3: first, second and third panel capacitors

Claims (10)

A substrate including a display region including pixels and a non-display region around the display region;
A gate wiring, a data wiring, and a touch common wiring which are disposed on the substrate and define the pixel intersecting with each other;
A thin film transistor connected to the gate wiring and the data wiring, the thin film transistor including a semiconductor layer, a gate electrode, a source electrode, and a drain electrode;
A touch common electrode connected to the touch common wiring;
A pixel electrode connected to the thin film transistor;
A source electrode and a drain electrode, a touch common wiring, the same layer as two of the pixel electrodes, an upper electrode made of the same material, and a lower electrode arranged in the non-display region above the substrate, Including a plurality of panel capacitors
And an array substrate for a touch display device.
The method according to claim 1,
A gate insulating layer is disposed between the semiconductor layer and the gate electrode,
An interlayer insulating layer is disposed between the gate electrode and the source electrode and the drain electrode,
A planarization layer is disposed between the source electrode and the drain electrode and the touch common wiring,
A first protective layer is disposed between the touch common wiring and the touch common electrode,
And a second protective layer is disposed between the touch common electrode and the pixel electrode.
3. The method of claim 2,
The plurality of panel capacitors include:
A first lower electrode formed of the same layer and the same material as the gate electrode, the first lower electrode formed of the same layer as the source electrode and the drain electrode and the first upper electrode made of the same material, ;
A second lower electrode formed of the same material as the source electrode and the drain electrode and made of the same material; a second panel capacitor composed of the planarization layer and a second upper electrode formed of the same layer and the same material as the touch common wiring; ;
A third lower electrode formed of the same layer and the same material as the touch common interconnection, and a third upper electrode composed of the first and second passivation layers and a third upper electrode made of the same layer and the same material as the pixel electrode,
And an array substrate for a touch display device.
The method of claim 3,
A gate pad disposed in the non-display region of the substrate and connected to the gate wiring, the gate pad being formed of the same layer and the same material as the gate electrode;
A gate pad electrode disposed on the second passivation layer and connected to the gate pad, the gate pad electrode being formed of the same layer and the same material as the pixel electrode;
A data pad disposed in the non-display region of the substrate and connected to the data line, the data pad being formed of the same layer and the same material as the source electrode and the drain electrode;
And a data pad electrode disposed on the second passivation layer and connected to the data pad,
Further comprising: an array substrate for a touch display device;
The method according to claim 1,
Wherein the plurality of panel capacitors are connected to a touch data driver for supplying a data voltage to the data lines.
The method according to claim 1,
And a gate driver arranged in the non-display region of the substrate and supplying a gate voltage to the gate wiring.
Forming gate wirings, data wirings, and touch common wirings that intersect with each other and define pixels on a substrate including a display region and a non-display region;
Forming a thin film transistor connected to the gate wiring and the data wiring, the thin film transistor including a semiconductor layer, a gate electrode, a source electrode, and a drain electrode;
Forming a touch common electrode connected to the touch common wiring;
Forming a pixel electrode connected to the thin film transistor;
The source electrode and the drain electrode, the touch common wiring, the same layer as the two of the pixel electrode, the upper electrode made of the same material, and the lower electrode, in the non-display region above the substrate Forming a plurality of panel capacitors
And forming a pattern on the substrate.
8. The method of claim 7,
Forming a gate insulating layer between the semiconductor layer and the gate electrode;
Forming an interlayer insulating layer between the gate electrode, the source electrode, and the drain electrode;
Forming a planarization layer between the source electrode and the drain electrode and the touch common wiring;
Forming a first protective layer between the touch common wiring and the touch common electrode;
Forming a second passivation layer between the touch common electrode and the pixel electrode
The method comprising the steps of:
9. The method of claim 8,
Wherein forming the plurality of panel capacitors comprises:
A first lower electrode formed of the same layer and the same material as the gate electrode, the first interlayer insulating layer, and a first upper electrode composed of the same layer as the source electrode and the drain electrode and made of the same material ; ≪ / RTI >
A second lower electrode made of the same material as the source electrode and the drain electrode and made of the same material; and a second panel capacitor composed of the planarization layer and a second upper electrode formed of the same layer and the same material as the touch common wiring, ; ≪ / RTI >
A third lower electrode formed of the same layer and the same material as the touch common interconnection, and a third upper electrode composed of the first and second passivation layers and a third upper electrode made of the same layer and the same material as the pixel electrode, forming
And forming a pattern on the substrate.
10. The method of claim 9,
Forming a gate pad, which is disposed in the non-display area of the substrate and is connected to the gate wiring, and which is formed of the same layer and the same material as the gate electrode;
Forming a gate pad electrode disposed on the second passivation layer and connected to the gate pad, the gate pad electrode being formed of the same layer and the same material as the pixel electrode;
Forming a data pad disposed in the non-display area of the substrate and connected to the data line, the data pad being formed of the same layer and the same material as the source electrode and the drain electrode;
Forming a data pad electrode disposed on the second passivation layer and connected to the data pad, the data pad electrode being the same layer and the same material as the pixel electrode;
The method comprising the steps of:

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