KR100612992B1 - Thin film transistor for liquid crystal display and repairing methods the same - Google Patents

Abstract

A plurality of gate lines are formed in the horizontal direction, and data lines defining pixel regions in a matrix form are formed to cross the gate lines. In each pixel area, pixel electrodes through which data signals are transmitted are formed through data lines, and gate electrodes connected to gate lines, source electrodes connected to data lines, and contact holes are formed at the intersections of the gate lines and the data lines. A thin film transistor including a drain electrode connected to the pixel electrode is formed. In addition, a storage wiring including a storage electrode line extending in the horizontal direction, a storage electrode in a vertical direction that is a branch of the storage electrode line, and one or more storage electrode connection portions connecting the storage electrodes of neighboring pixels to each other are formed on the same layer as the gate line. Further, in the vertical direction, a repair auxiliary line is formed that is formed of the same layer as the data line, overlaps one end of the sustain electrode line, and the other end overlaps the sustain wiring or the gate line of the neighboring pixel row. In the same layer as the pixel electrode, a storage wiring connection portion for connecting the storage wirings of adjacent pixel rows to each other is formed. In the structure of the present invention, when the gate line or data line is disconnected, the disconnected wiring, the maintenance wiring and the repair auxiliary line can be shorted to easily repair the disconnection of the wiring.

 Gate line, pixel electrode, sustain electrode

Description

Thin film transistor substrate for liquid crystal display and repair method thereof {THIN FILM TRANSISTOR FOR LIQUID CRYSTAL DISPLAY AND REPAIRING METHODS THE SAME}

1 is a configuration diagram schematically illustrating a structure of a thin film transistor substrate for a liquid crystal display according to an exemplary embodiment of the present invention.

2 is a layout view illustrating in detail a structure of a thin film transistor substrate for a liquid crystal display according to a first exemplary embodiment of the present invention.

3 is a cross-sectional view taken along the line III-III 'of FIG. 2,

4A is a diagram illustrating a repair method when a gate line is disconnected in a thin film transistor substrate for a liquid crystal display according to a first exemplary embodiment of the present invention.

4B is a diagram illustrating a repair method when a data line is disconnected in the thin film transistor substrate for a liquid crystal display according to the first embodiment of the present invention.

4C is a diagram illustrating a repair method when a source electrode of a data line is disconnected in a thin film transistor substrate for a liquid crystal display according to a first embodiment of the present invention.

FIG. 5 is a layout view specifically illustrating a structure of a thin film transistor substrate for a liquid crystal display according to a second exemplary embodiment of the present invention.

FIG. 6 is a cross-sectional view taken along the line VI-VI 'of FIG. 5;

FIG. 7A is a diagram illustrating a repair method when a gate line is disconnected in a thin film transistor substrate for a liquid crystal display according to a second exemplary embodiment of the present invention.

FIG. 7B is a diagram illustrating a repair method when a data line is disconnected in a thin film transistor substrate for a liquid crystal display according to a second exemplary embodiment of the present invention.

FIG. 7C is a diagram illustrating a repair method when a source electrode is disconnected among data lines in a thin film transistor substrate for a liquid crystal display according to a second exemplary embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin film transistor substrate for a liquid crystal display device and a repair method thereof, and more particularly, to a thin film transistor substrate for a liquid crystal display device having a separate independent wiring for forming a storage capacitor and a repair method thereof.

The liquid crystal display is one of the most widely used flat panel display devices. The liquid crystal display includes two substrates on which electrodes are formed and a liquid crystal layer interposed therebetween, and rearranges the liquid crystal molecules of the liquid crystal layer by applying a voltage to the electrode. By controlling the amount of light transmitted.

Among the liquid crystal display devices, a liquid crystal display device having a thin film transistor for forming an electrode on each of two substrates and switching a voltage applied to the electrode is generally used. The thin film transistor is generally formed on one of two substrates. The substrate on which the thin film transistor is formed is called a thin film transistor substrate for a liquid crystal display device.

A gate line and a data line are formed on the thin film transistor substrate for a liquid crystal display device to cross each other, and a thin film transistor is formed at an intersection portion of the gate line and the data line. According to the switching operation of the thin film transistor, a pixel electrode to which an image signal is transmitted through a data line is formed.

On the other hand, the thin film transistor substrate for a liquid crystal display device is formed with a sustain electrode line for assisting the charge holding ability of the liquid crystal capacitor, and the sustain electrode line overlaps the pixel electrode and the insulating film to form a storage capacitor.

In the process of manufacturing the thin film transistor liquid crystal display device, there may be various reasons for reducing the process yield, but disconnection of the data line and the gate line connected from the output terminal of the driving integrated circuit to the source terminal and the gate terminal of each thin film transistor. Open / short defects are not only a major cause of yield loss, but are also expensive to repair. Such disconnection defects in the wiring appear as point defects or line defects of the pixels when the image is displayed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a thin film transistor substrate for a liquid crystal display device having a wiring structure capable of easily repairing disconnection / short circuit defects of wiring.

In addition, another object of the present invention is to provide a repairing method of wiring that can easily repair disconnection / short circuit defects of the gate line and the data line.

In order to solve the above problems, at least two portions of the storage wirings of adjacent pixel columns are formed on the thin film transistor substrate for a liquid crystal display according to the present invention. In addition, one end overlaps with the sustain wiring, the other end overlaps with the sustain wiring or the gate wiring of the neighboring pixel row, and a floating auxiliary line is formed.

More specifically, in the thin film transistor substrate for a liquid crystal display device according to the present invention, a gate wiring including a plurality of gate lines formed in the row direction is formed, is formed in the same direction as the gate line, and is formed of the storage electrode line and the storage electrode line. A sustain wiring including a sustain electrode that is a branch and at least one sustain electrode connection portion connecting the sustain electrodes of neighboring pixels to each other is formed. In addition, a data wiring including a data line which is insulated from and intersects with the gate wiring and the sustain wiring and is formed in a column direction is formed, one end of which overlaps the storage electrode line in the same layer as the data wiring, and the other end is in the column direction. As a result, a repair auxiliary line overlapping the gate wiring or the sustain wiring of the neighboring pixel is formed. A pixel electrode is formed in a matrix pixel defined by the intersection of a gate line and a data line to form a storage capacitor by overlapping with a storage line, and to receive an image signal from the data line.

Here, the semiconductor device may further include a storage line connection unit connecting adjacent storage lines of adjacent pixel rows.

In this case, the repair auxiliary line may be formed of the same layer as the data line, the connection line for the storage line may be formed of the same layer as the pixel electrode, and the storage line and the gate line may be formed of the same layer.

In such a liquid crystal display thin film transistor substrate, when the gate wiring or data wiring is disconnected, the broken wiring is repaired by shorting the repair wiring which overlaps with the gate wiring or data wiring.

Next, a liquid crystal display and a repair method thereof according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings so that a person skilled in the art may easily implement the present invention.

1 is a configuration diagram schematically illustrating a structure of a thin film transistor substrate for a liquid crystal display according to an exemplary embodiment of the present invention.

In the thin film transistor substrate for a liquid crystal display according to the exemplary embodiment of the present invention, the plurality of gate lines 22 and the plurality of data lines 62 cross each other to define a plurality of pixels P in a matrix form. Each unit pixel P is a switching element, a thin film transistor having a first terminal connected to a gate line 22, a second terminal connected to a data line 62, and a third terminal connected to a liquid crystal capacitor C _LC . (TFT) is formed. Each pixel P includes a storage capacitor C _ST having one terminal connected to a third terminal of the thin film transistor TFT and the other terminal connected to the storage electrode line 26. Here, reference numeral D denotes an active region in which an image is displayed, and is composed of a set of pixels in a matrix form. On the periphery outside the active region D, a plurality of outer repair lines 91 overlapping the gate line 22 and the data line 62 are formed.

Next, the pixel structure of the thin film transistor substrate for a liquid crystal display according to the exemplary embodiment of the present invention will be described in more detail with reference to FIGS. 2 and 3.

FIG. 2 is a layout view illustrating a structure of a thin film transistor substrate for a liquid crystal display according to a first exemplary embodiment of the present invention in detail. FIG. 3 is a cross-sectional view taken along the line II-II ′ of FIG. 1.

First, a gate made of a metal or a conductor such as aluminum (Al) or aluminum alloy (Al alloy), molybdenum (Mo) or molybdenum-tungsten (MoW) alloy, chromium (Cr), tantalum (Ta) or the like on the insulating substrate 10. Wiring and maintenance wiring are formed. The gate wiring includes a scan signal line or gate line 22 which extends in the horizontal direction and transmits a scan signal, and a gate electrode 24 of the thin film transistor which is part of the gate line 22. It may further include a gate pad connected to the end and receiving a scan signal from the outside to transfer to the gate line 22. The storage wiring extends in the same direction as the gate line 22 and is branched from the storage electrode line 26 in the vertical direction to a voltage applied to the common electrode voltage input to the common electrode of the upper plate from the outside. And a sustain electrode connecting portion 27 for connecting the extended sustain electrode 28 to the sustain wirings of adjacent pixel columns, and a wiring repair portion 29 connected to an end of the sustain electrode 28. Here, the storage wirings 26, 27, 28, and 29 of neighboring pixel columns are connected through three portions of the two storage electrode connection portions 27 and a part of the storage electrode lines 26, but one storage electrode connection portion 27 is provided. ) And a portion of the storage electrode line 26. Create and maintain the wiring (see C _ST, Fig. 1), a capacitor for the storage capacitor which is overlapped with the pixel electrode 82 to be described later to form a storage capacitor for improving electric charge preservation ability of the pixel (26, 27, 28, 29) It is to give. Here, the common voltage input to the sustain wirings 26, 27, 28, and 29 may be input in one direction of the sustain electrode line 26 through one pad, and both sides of the sustain electrode line 26 through the plurality of pads. It can also be entered in the direction.

Here, the gate wirings 22 and 24 and the storage wirings 26, 27, 28, and 29 may be formed in a single layer, but may also be formed in a double layer or a triple layer. In the case where more than two layers are formed, it is preferable that one layer is made of a material having a low resistance and the other layer is made of a material having good contact properties with other materials, in particular, ITO used as a pixel electrode. This is because the pad part is formed together with the wiring material and the ITO material for the pixel electrode in order to reinforce the pad part electrically connected to the outside.

A gate insulating film 30 made of silicon nitride (SiN _x ) is formed on the gate wirings 22 and 24 and the storage wirings 26, 27, 28, and 29 to form the gate wirings 22, 24 and the storage wiring 26. 27, 28, 29).

A semiconductor pattern 42 made of a semiconductor such as hydrogenated amorphous silicon is formed on the gate insulating layer 30. The semiconductor pattern 42 is heavily doped with an n-type impurity such as phosphorus (P) on the semiconductor pattern 42. An ohmic contact layer pattern or intermediate layer patterns 55 and 56 made of amorphous silicon are formed.

On the contact layer patterns 55 and 56, source and drain electrodes 65 and 66 of a thin film transistor made of a conductive material such as Mo or MoW alloy, Cr, Al or Al alloy, and Ta are formed, respectively. The data line 62 which is connected to the source electrode 65 and crosses the gate line 22 and defines the pixel is formed in the vertical direction. The data lines 62, 65, and 66 may further include a data pad connected to one end of the data line 62 to receive an image signal from the outside. The wiring repair unit 29 is formed on the gate insulating layer 30 in the same layer as the data lines 62, 65, and 66, and one end thereof overlaps the storage wiring 26, and the other end passes through the gate line 22 of the adjacent pixel row. ) And an auxiliary line for repair 68 overlapping each other is formed in the vertical direction. Here, the other end of the repair auxiliary line 68 may extend only to the upper portion of the gate line 22.

The data lines 62, 65, 66 and the repair auxiliary line 68 may be formed in a single layer like the gate lines 22, 24, but may be formed in a double layer or a triple layer. Of course, when forming more than two layers, it is preferable that one layer is made of a material having a low resistance and the other layer is made of a material having good contact properties with other materials.

A passivation film 72 is formed on the data wirings 62, 65, 66 and the semiconductor layer 42 which is not covered by the data wiring, and the passivation film 72 has a contact hole 71 exposing the drain electrode 66. have.

On the passivation layer 72, a pixel electrode 82 that receives an image signal from a thin film transistor and generates an electric field together with the common electrode of the upper plate is formed. The pixel electrode 82 is made of a transparent conductive material such as indium tin oxide (ITO), and is physically and electrically connected to the drain electrode 66 through the contact hole 71 to receive an image signal. Here, a storage wiring connection portion for connecting adjacent storage wirings 26, 27, 28, and 29 of adjacent pixel rows may be further formed on the same layer as the pixel electrode 82, and the storage wiring connection portion may include a gate insulating layer. The contact wires 26, 27, 28, and 29 may be connected to each other through the contact holes formed in the 30 and the passivation layer 72. This will be described in detail later with reference to the drawings.

In the structure according to the exemplary embodiment of the present invention, the repair auxiliary line 68 is formed of the same layer as the data lines 62, 65, and 66, but is formed on the passivation layer 72 on the same layer as the pixel electrode 82. The sustain wiring connection part may be formed on the gate insulating layer 30 in the same layer as the repair auxiliary line 68. The passivation layer 72 may have a contact hole that exposes the gate pad and the data pad, and an auxiliary gate pad and an auxiliary data pad may be formed on the same layer as the pixel electrode to cover the gate pad and the data pad through the contact hole. .

Next, a method of repairing the gate wiring, the data wiring or the sustain wiring in the structure of the thin film transistor substrate for a liquid crystal display device according to the embodiment of the present invention will be described in detail.

First, a method of repairing disconnection when the gate line 22 is disconnected will be described in detail.

4A is a diagram illustrating a repair method when a gate line is disconnected in a thin film transistor substrate for a liquid crystal display according to an exemplary embodiment of the present invention.

)에 레이저를 이용하여 이들(22, 26, 68)을 단락시켜, 게이트선(22)을 통하여 전달되는 주사 신호를 수리용 보조선(68)과 유지 전극선(26)을 통하여 우회시킨다. 이때, 유지 배선(26, 27, 28, 29) 전체에 주사 신호가 전달되지 않도록 S 부분에 인접한 양쪽의 유지 전극선(26)의 O 부분(--)을 단선시킨다. 이때, O 부분 사이의 유지 전극(28)을 추가로 단선시킬 수도 있으며, 공통 전압은 유지 전극선(26)의 양쪽 방향에서 전달된다. 한편, 공통 전압이 유지 전극선(26)의 한쪽 방향에서만 전달되는 경우에는 가로 방향으로 유지 전극(28)을 연결하는 유지 보조선(25)을 추가할 수도 있다.As shown in FIG. 4A, when the gate line 22 is disconnected at the portion A, the repair auxiliary line 68, the gate line 22, and the storage electrode line 26 adjacent to both sides of the disconnected portion A are disposed. Intersecting S part (

), And short-circuit these 22, 26, 68 using a laser, and the scanning signal transmitted through the gate line 22 is bypassed through the repair auxiliary line 68 and the sustain electrode line 26. At this time, the O portions (-) of both of the sustain electrode lines 26 adjacent to the S portion are disconnected so that the scan signal is not transmitted to the entire sustain wirings 26, 27, 28, 29. At this time, the sustain electrode 28 between the O portions may be further disconnected, and the common voltage is transmitted in both directions of the sustain electrode line 26. On the other hand, when the common voltage is transmitted only in one direction of the storage electrode line 26, the storage auxiliary line 25 connecting the storage electrode 28 in the horizontal direction may be added.

 Next, when the data line 62 is disconnected, a method of repairing the data line 62 will be described in detail.

4B is a diagram illustrating a repair method when a data line is disconnected in a thin film transistor substrate for a liquid crystal display according to an exemplary embodiment of the present invention.

)에 레이저를 이용하여 이들(26, 27, 62)을 단락시켜, 데이터선(62)을 통하여 전달되는 영상 신호를 유지 배선(26, 27)을 통하여 우회시킨다. 이때, 유지 전 극 연결부(27)가 유지 전극선(26)을 이용할 수도 있지만, 각각의 단위 화소에 2개씩 형성되어 있는 경우에는 두 개의 유지 전극 연결부를 모두 이용할 수도 있다. 이때에도, 영상 신호가 유지 배선(26, 27, 28, 29) 전체에 전달되지 않도록 S 부분에 인접한 유지 전극선(26) O 부분(--)을 단선시킨다. 이때, 두 개의 유지 전극 연결부(27)만을 이용하여 수리하는 경우에 공통 전압은 유지 전극선(26)의 한쪽 방향에서 전달될 수도 있으며, 유지 전극선(26)을 이용하는 경우에 공통 전압은 유지 전극선(26)의 양쪽에서 전달되는 것이 바람직하다.In the case where the data line 62 is disconnected at the B portion, as shown in FIG. 4B, the S portion at which the upper and lower sustain wires 26 and 27 adjacent to the disconnected B portion and the data line 62 intersect (

), And short-circuit these 26, 27, 62 using a laser, and the video signal transmitted through the data line 62 is bypassed through the sustain wirings 26, 27. In this case, the storage electrode connecting portion 27 may use the storage electrode line 26, but when the storage electrode lines 26 are formed in each unit pixel, both of the storage electrode connecting portions may be used. Also at this time, the O part (-) adjacent to the S part is disconnected so that the video signal is not transmitted to the entire sustain wirings 26, 27, 28, and 29. In this case, when repairing using only two sustain electrode connecting portions 27, the common voltage may be transmitted in one direction of the sustain electrode line 26, and when the sustain electrode line 26 is used, the common voltage is the sustain electrode line 26. Preferably on both sides.

Next, when the source electrode 65 is disconnected among the data lines 62, 65, and 66, a method of repairing the source electrode 65 will be described in detail.

4C is a diagram illustrating a repair method when a source electrode is disconnected among data lines in a thin film transistor substrate for a liquid crystal display according to an exemplary embodiment of the present invention.

)과 C 부분에 인접한 유지 배선(26, 29)과 수리용 보조선(68) 및 데이터선(62)이 교차하는 S 부분(

)에 레이저를 이용하여 이들(26, 27, 29, 62)을 단락시켜, 데이터선(62)을 통하여 전달되는 영상 신호를 유지 배선(26, 27, 28, 29)과 수리용 보조선(68)을 통하여 우회시킨다. 이때, 유지 배선(26, 27, 28, 29) 전체에 영상 신호가 전달되지 않도록 S 부분에 인접한 유지 배선(26, 28)의 O 부분(--)을 단선시킨다. 이때에도, 공통 전압은 유지 전극선(26)의 양쪽 방향에서 전달된다.As shown in FIG. 4C, when the C portion of the source electrode 65 is disconnected among the data lines 62, 65, and 66, S where the sustain electrode connecting portion 27 adjacent to the C portion and the data line 62 cross each other. part(

) And the S portion where the maintenance wirings 26 and 29 adjacent to the C portion and the repair auxiliary line 68 and the data line 62 cross each other (

), And short-circuit the 26, 27, 29, and 62 by using a laser to hold the image signals transmitted through the data line 62 and the maintenance wirings 26, 27, 28, 29 and the repair auxiliary line 68. Bypass). At this time, the O portion (-) of the sustain wirings 26 and 28 adjacent to the S portion is disconnected so that the image signal is not transmitted to the entire sustain wirings 26, 27, 28, and 29. Also at this time, the common voltage is transmitted in both directions of the sustain electrode line 26.

Next, the structure of the thin film transistor substrate for liquid crystal display device having the sustain wiring connection portion will be described in detail.

FIG. 5 is a layout view illustrating a structure of a thin film transistor substrate for a liquid crystal display according to a second exemplary embodiment of the present invention in detail. FIG. 6 is a cross-sectional view taken along the line VI-VI ′ of FIG. 5.

Most of the structure is similar to FIG.

However, both ends of the repair auxiliary line 68 overlap with the storage electrode line 26 and the neighboring gate line 22, respectively. In addition, the gate insulating film 30 and the passivation film 72 have contact holes 78 that expose the gate wirings 26 and 29, respectively, and adjacent storage wirings of adjacent pixel rows in the same layer as the pixel electrode 82. The maintenance wiring connection part 88 which electrically connects 26, 27, 28, and 29 is formed.

In the structure of the thin film transistor substrate for a liquid crystal display according to the exemplary embodiment of the present invention, the adjacent sustain electrode lines 26 and 28 are connected to each other through the sustain voltage auxiliary line 84, and thus the sustain electrode lines 26 and 28. It is possible to minimize the signal distortion of the sustain voltage transmitted through.

Then, when the gate wiring or the data wiring is disconnected in the structure having the sustain wiring connecting portion 88, the repairing method thereof will be described in detail. In this structure, since all of the maintenance wirings 26, 27, 28, and 29 are connected through the maintenance wiring connection unit 88, signals transmitted to the maintenance wirings 26, 27, 28, and 29 are connected through one pad. You may also

First, a method of repairing disconnection when the gate line 22 is disconnected will be described in detail.

FIG. 7A illustrates a repair method when a gate line is disconnected in a thin film transistor substrate for a liquid crystal display according to a second exemplary embodiment of the present invention.

)에 레이저를 이용하여 이들(22, 26, 68)을 단락시켜, 게이트선(22)을 통하여 전달되는 주사 신호를 수리용 보조선(68)과 유지 전극선(26)을 통하여 우회시킨다. 이때, 유지 배선(26, 27, 28, 29) 전체에 주사 신호가 전달되지 않도록 S 부분에 인접한 유지 전극선(26, 28, 29)의 O 부분(--)을 단선시킨다. 이때, 유지 배선(26, 27, 28, 29) 모두는 유지 배선 연결부(88)를 통하여 연결되어 있기 때문에 S 부분 사이의 유지 전극(28)의 O 부분(--)을 단선시켜 유지 전극(28)을 유지 전극선(26)으로부터 분리해야 한다.As shown in FIG. 7A, when the gate line 22 is disconnected from the A portion, the S portion that intersects the repair auxiliary line 68 and the gate line 22 and the storage electrode line 26 on both sides adjacent to the A portion. (

), And short-circuit these 22, 26, 68 using a laser, and the scanning signal transmitted through the gate line 22 is bypassed through the repair auxiliary line 68 and the sustain electrode line 26. At this time, the O portion (-) of the sustain electrode lines 26, 28, 29 adjacent to the S portion is disconnected so that the scan signal is not transmitted to the entire sustain wirings 26, 27, 28, 29. At this time, since all of the sustain wirings 26, 27, 28, and 29 are connected through the sustain wiring connecting portion 88, the O portion (-) of the sustain electrode 28 between the S portions is disconnected to sustain the sustain electrode 28. ) Must be separated from the storage electrode line 26.

Next, when the data line 62 is disconnected, a method of repairing the data line 62 will be described in detail.

FIG. 7B is a diagram illustrating a repair method when a data line is disconnected in a thin film transistor substrate for a liquid crystal display according to a second exemplary embodiment of the present invention.

)에 레이저를 이용하여 이들(26, 27, 62)을 단락시켜, 데이터선(62)을 통하여 전달되는 영 상 신호를 유지 배선(26, 27)을 통하여 우회시킨다. 이때에도, 영상 신호가 유지 배선(26, 27, 28, 29) 전체에 전달되지 않도록 S 부분에 인접한 유지 전극선(26) 및 유지 전극(28)의 O 부분(--)을 단선시킨다. When the data line 62 is disconnected at the portion B, as shown in FIG. 7B, the portion S (where the sustain lines 26 and 27 adjacent to the portion B and the data line 62 intersect each other (

), And short-circuits these 26, 27 and 62 using a laser, and the image signal transmitted through the data line 62 is bypassed through the sustain wirings 26 and 27. Also at this time, the sustain electrode line 26 adjacent to the S portion and the O portion (−) of the sustain electrode 28 are disconnected so that the video signal is not transmitted to the entire sustain wirings 26, 27, 28, and 29.

Next, when the source electrode 65 is disconnected among the data lines 62, 65, and 66, a method of repairing the source electrode 65 will be described in detail.

FIG. 7C is a diagram illustrating a repair method when a source electrode is disconnected among data lines in a thin film transistor substrate for a liquid crystal display according to a second exemplary embodiment of the present invention.

)에 레이저를 이용하여 이들(26, 27, 62)을 단락시켜, 데이터선(62)을 통하여 전달되는 영상 신호를 유지 배선(26, 27, 29)과 유지 배선 연결부(88)를 통하여 우회시킨다. 이때, 유지 배선(26, 27, 28, 29) 전체에 영상 신호가 전달되지 않도록 S 부분에 인접한 유지 배선(26, 28)의 O 부분(--)을 단선시킨다. As shown in FIG. 7C, when the C portion of the source electrode 65 is disconnected among the data lines 62, 65, and 66, the sustain electrode connecting portion 27, the sustain electrode line 26, and the data line adjacent to the C portion are disconnected. S part where (62) intersects (

), And short-circuit the 26, 27, 62 using a laser to bypass the video signal transmitted through the data line 62 through the sustain wiring 26, 27, 29 and the sustain wiring connection 88. . At this time, the O portion (-) of the sustain wirings 26 and 28 adjacent to the S portion is disconnected so that the image signal is not transmitted to the entire sustain wirings 26, 27, 28, and 29.

Although transparent ITO has been used as an example of the material of the pixel electrode 82, an opaque conductive material may be used for the reflective liquid crystal display device.

As in the embodiment of the present invention, a repair auxiliary line can be provided to easily repair a disconnection failure of a gate line or a data line, and a sustain voltage can be connected by connecting adjacent sustain electrode lines of adjacent pixel rows through a sustain wiring connection. Minimize signal distortion.

Claims (11)

A gate wiring including a plurality of gate lines formed in a row direction, A sustain wiring including a sustain electrode line formed in the same direction as the gate line, a sustain electrode which is a branch of the sustain electrode line, and at least one sustain electrode connection part connecting the sustain electrodes of pixels adjacent to each other; A data line including a data line insulated from and intersecting the gate line and the sustain line and formed in a column direction; A pixel electrode overlapping with the storage wiring to form a storage capacitor in a pixel of a matrix defined by the intersection of the gate line and the data line, and receiving an image signal from the data line; and A thin film transistor substrate for a liquid crystal display device, wherein one end thereof is insulated from and overlapped with the sustain wiring, and the other end thereof includes a repair auxiliary line that is insulated from and overlaps with an adjacent storage wiring or gate wiring of the adjacent pixel row. In claim 1, A thin film transistor substrate for a liquid crystal display device further comprising a storage line connection unit for connecting the storage lines of the pixel rows adjacent to each other. In claim 2, The thin film transistor substrate for a liquid crystal display device, wherein the connection portion for holding wiring is formed of the same layer as the pixel electrode. In claim 1, And the repair auxiliary line is formed of the same layer as the data line. In claim 1, The thin film transistor substrate for liquid crystal display device, wherein the sustain wiring and the gate wiring are formed of the same layer. Board, A gate line formed on the substrate and including a gate line extending in a horizontal direction to transmit a scan signal and a gate electrode of a thin film transistor that is part of the gate line; A sustain wiring formed on the substrate, the sustain wiring including a sustain electrode line extending in a horizontal direction, a sustain electrode which is a branch of the sustain electrode line, and at least one sustain electrode connection portion connecting the sustain electrodes of neighboring pixels; A gate insulating film covering the gate wiring and the sustain wiring; A semiconductor layer formed on the gate insulating film and formed of a semiconductor; A data line formed over the gate insulating layer and extending in a vertical direction to define the gate line and a pixel in a matrix form, and separated from the source electrode and the source electrode of the thin film transistor formed on the semiconductor layer and branched from the data line; A data line formed on the semiconductor layer and including a drain electrode of the thin film transistor facing the source electrode with respect to the gate electrode; A repair auxiliary line formed on the gate insulating layer, one end of which overlaps the storage wiring, and the other end of which overlaps the gate line or the storage wiring of the neighboring pixel row; A protective film covering the data line and the repair auxiliary line and having a first contact hole exposing the drain electrode; A pixel electrode formed on the passivation layer and connected to the drain electrode through the first contact hole; Thin film transistor substrate for a liquid crystal display device comprising a. In claim 6, Further comprising a holding wire connecting portion formed on the protective film, And the sustain wiring connection unit connects the sustain wirings of the pixel rows adjacent to each other through a second contact hole formed in the protective film and the gate insulating film. A gate wiring including a plurality of gate lines formed in a row direction, a storage electrode line formed in the same direction as the gate line, a storage electrode which is a branch of the storage electrode line, and at least one of the storage electrodes of neighboring pixels. A data line including a storage line including a storage electrode connection part of the data line, a data line including a data line insulated from and intersecting the gate line and the storage line, and formed in a column direction, and a pixel in a matrix form defined by an intersection of the gate line and the data line. A pixel electrode receiving an image signal from the data line, and one end of the pixel electrode which is insulated from and overlapped with the sustain wire, and the other end of which is adjacent to the neighboring pixel row; For repairs insulated from the gate wiring In the TFT array panel for a liquid crystal display device including the shipbuilding, And repairing the disconnected gate line by shorting the disconnected gate line, the sustain wiring, and the repair auxiliary line, respectively, when the gate line is disconnected. A gate wiring including a plurality of gate lines formed in a row direction, a storage electrode line formed in the same direction as the gate line, a storage electrode which is a branch of the storage electrode line, and at least one of the storage electrodes of neighboring pixels. A data line including a storage line including a storage electrode connection part of the data line, a data line including a data line insulated from and intersecting the gate line and the storage line, and formed in a column direction; A pixel electrode receiving an image signal from the data line, and one end of the pixel electrode which is insulated from and overlapped with the sustain wire, and the other end of which is adjacent to the neighboring pixel row; For repairs insulated from the gate wiring In the TFT array panel for a liquid crystal display device including the shipbuilding, And repairing the disconnected data line by shorting the disconnected data line and the sustain wiring crossing the data line when the data line is disconnected. A gate wiring including a plurality of gate lines formed in a row direction, a storage electrode line formed in the same direction as the gate line, a storage electrode which is a branch of the storage electrode line, and at least one of the storage electrodes of neighboring pixels. A data line including a storage line including a storage electrode connection part of the data line, a data line including a data line insulated from and intersecting the gate line and the storage line, and formed in a column direction; A pixel electrode receiving an image signal from the data line, and one end of the pixel electrode which is insulated from and overlapped with the sustain wire, and the other end of which is adjacent to the neighboring pixel row; For repairs insulated from the gate wiring In the TFT array panel for a liquid crystal display device including the shipbuilding, When the data line and the source electrode are disconnected, the sustain wire and the repair auxiliary line adjacent to the disconnected source electrode are shorted, and the shorted data line is disconnected by the short circuit of the sustained wire. A wiring repair method of a thin film transistor substrate for a liquid crystal display device for repairing data wiring. A gate wiring including a plurality of gate lines formed in a row direction, a storage electrode line formed in the same direction as the gate line, a storage electrode which is a branch of the storage electrode line, and at least one of the storage electrodes of neighboring pixels. A data line including a storage line including a storage electrode connection part of the data line, a data line including a data line insulated from and intersecting the gate line and the storage line, and formed in a column direction; A pixel electrode which overlaps the storage wiring to form a storage capacitor, and receives an image signal from the data line, one end of which is insulated from and overlaps with the storage wiring, and the other end is adjacent to the storage wiring or gate of the adjacent pixel row. Repair auxiliary wires insulated from the wiring and Hitting in the liquid crystal display thin film transistor substrate comprising a holding wiring connecting portion for connecting the holding wiring of the pixel rows adjacent to each other, In the case where the data line and the source electrode are disconnected, the wire repairing method of a thin film transistor substrate for a liquid crystal display device repairing the disconnected data line by shorting the sustained line adjacent to the disconnected source electrode and the disconnected data line. .

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