KR20020061851A - liquid crystal display having repair lines and repairing method thereof - Google Patents

Abstract

PURPOSE: An LCD(Liquid Crystal Display) with repair lines and a method for repairing the same are provided to transmit signals to lines having short circuit by shorting a position where the shorted line is crossing the repair line by forming ring-shaped repair lines and reduce the parasitic capacity generated between gate lines and the repair lines by floating the repair lines crossing the gate lines, thereby reducing the signal delay. CONSTITUTION: An LCD includes an insulation substrate(1), a plurality of gate line(10) formed on the substrate, gate pad groups(11) formed of a plurality of gate pads at an end of the gate lines, a plurality of data lines(20) crossing the gate lines, insulated from the gate lines for defining pixel areas, data pad groups(21) formed of a plurality of data pads at an end of the data lines, a gate PCB(Printed Circuit Board:2) positioned outside a first substrate, a data PCB(3) positioned outside the first substrate, and repair lines(30) formed of a first part on the data PCB, a second part connected to the first part and crossing end parts of the gate lines in the vicinity of the gate pad groups, a third part connected to the first part on the substrate and crossing an end part of the gate lines far from the gate pad groups, and a four part meeting the second and the third parts.

Description

Liquid crystal display having repair lines and a repair method thereof

The present invention relates to a liquid crystal display device having a repair line and a repair method thereof.

In general, a liquid crystal display device is composed of two substrates on which electrodes are formed and a liquid crystal layer injected therebetween. In addition, a printed circuit board (PCB) substrate, which is an external signal source, is attached to the liquid crystal display, and the electrical signals supplied from the liquid crystal display are converted and applied to the two substrates, thereby rearranging the liquid crystal molecules of the liquid crystal layer to adjust the amount of transmitted light. Adjust

The thin film transistor substrate of the liquid crystal display device is formed so that a plurality of gate lines and a plurality of data lines are insulated from each other and cross each other, and thin film transistors and pixel electrodes are formed in a plurality of pixel regions defined by crossing the gate lines and the data lines. have. These pixel areas form a display area for displaying an image, and there is a pad area where gate pads and data pads are formed at the edge of the substrate where the end of the gate line and the end of the data line are located, that is, outside the display area. .

A color filter and a common electrode are formed on the color filter substrate facing the thin film transistor substrate, and are smaller in size than the thin film transistor substrate. Therefore, the pad area is revealed after the two substrates are aligned and assembled.

On the left side and the upper side of the liquid crystal display composed of two substrates, a PCB substrate for data and a PCB substrate for transmitting electrical signals from the outside are attached. Each PCB substrate converts electrical signals into gate signals and data signals, respectively. It is connected to the thin film transistor substrate by a tape automated bonding IC (TAB-IC) in which a driving IC (integrated circuit) that outputs to a pad and wiring is mounted.

In the process of manufacturing such a liquid crystal display device, there are various causes of the defects to reduce the process yield, the defect is caused by the disconnection of the wiring is a major cause, which is expensive to repair.

The technical problem to be achieved by the present invention is to effectively repair the disconnection of the wiring.

1 is a plan view illustrating a structure of a repair line of a liquid crystal display according to a first exemplary embodiment of the present invention.

2 is a plan view illustrating a structure of a repair line of a liquid crystal display according to a second exemplary embodiment of the present invention.

3 is a plan view illustrating a structure of a repair line of a liquid crystal display according to a third exemplary embodiment of the present invention.

4 is a plan view illustrating a structure of a repair line of a liquid crystal display according to a fourth exemplary embodiment of the present invention.

5 is a plan view illustrating a structure of a repair line of a liquid crystal display according to a fifth exemplary embodiment of the present invention.

6 is a plan view illustrating a structure of a repair line of a liquid crystal display according to a sixth exemplary embodiment of the present invention.

7 is a plan view illustrating a structure of a repair line of a liquid crystal display according to a seventh exemplary embodiment of the present invention.

FIG. 8 is an enlarged plan view of a portion VII in FIG. 7;

9 is a plan view illustrating a structure of a repair line of a liquid crystal display according to an eighth exemplary embodiment of the present invention.

According to the present invention, a plurality of gate lines are formed on an insulating substrate, and a gate pad group including a plurality of gate pads connected to one end of the gate line is formed. A plurality of data lines insulated from and intersecting the gate lines to form a pixel region are formed, and a data pad group including a plurality of data pads connected to one end of the data line is formed. A gate PCB substrate is located outside of the first substrate, and a data PCB substrate is located outside of the first substrate. The first portion formed on the data PCB substrate, the second portion connected to the first portion and formed on the substrate and intersecting with the end portion near the gate pad group of the gate line, and far from the gate pad group of the gate line. A repair line is formed, consisting of a third portion intersecting the tip, and a fourth portion that meets the second and third portions.

Here, the second to fourth portions of the repair line are preferably formed of the same layer as the data line.

Meanwhile, an FPC film may be further formed to connect the gate PCB board and the data PCB board, and the repair line may be connected to the first and second parts, and may extend to the FPC film and the gate PCB board. It may further include five parts.

The repair line further includes a sixth portion connected to the first portion and intersecting with an end portion close to the data pad group of the data line, wherein the fourth portion of the repair line is the end far from the data pad group of the data line. It is preferable to intersect the portion, wherein the fourth portion and the sixth portion of the repair line may be formed of the same layer as the gate line.

On the other hand, two or more repair lines may be formed, wherein the second portion of the repair line preferably crosses at least one or more gate line groups connected to the gate pad group.

The method for repairing such a liquid crystal display is as follows. First, a gate pad group including a plurality of gate lines formed on an insulating substrate and a plurality of gate pads formed at one end of the gate line, a plurality of data lines insulated from and intersecting the gate line to form a pixel region, and one end of the data line. A data pad group including a plurality of data pads formed on the first substrate, a gate PCB substrate positioned outside the first substrate, a data PCB substrate positioned outside the first substrate, and a first PCB formed on the data PCB substrate A second portion, which is connected to the first portion and formed on the substrate, intersects the end of the gate pad group close to the gate line, and is formed on the substrate, which is connected to the first portion and is far from the gate pad group of the gate line. A repair line consisting of a third part intersecting the end of the second part and a fourth part intersecting the second and third parts The. Next, the disconnected gate line and the repair line are short-circuited at the first and second points at which the second and third portions of the repaired gate line and the repair line cross, respectively.

In this case, a portion adjacent to the first and second points may be cut out of the second and third portions of the repair ship.

Meanwhile, a FPC film may be further formed to connect the gate PCB board and the data PCB board, and the repair line may be connected to the first and second parts, and may be extended to the FPC film and the gate PCB board. It may further include a portion.

The repair line further includes a sixth portion connected to the first portion and intersecting with an end portion close to the data pad group of the data line, and the fourth portion of the repair line intersects the data line, and the fourth portion of the repair line. And the sixth portion is preferably formed of the same layer as the gate line.

Here, when the data line is disconnected, the third point at which the fourth part of the repair line and the disconnected data line intersect, the fourth point at which the sixth part of the repair line intersects, and the second part of the repair line, It is preferable to short the fifth point at which the fourth portion intersects.

According to another embodiment of the present invention, a plurality of gate lines are formed on an insulating substrate, and a gate pad group including a plurality of gate pads is formed at one end of the gate line. A plurality of data lines are formed which are insulated from and cross the gate line to form a pixel region, and a data pad group including a plurality of data pads is formed at one end of the data line. A gate PCB substrate is located outside of the first substrate, and a data PCB substrate is located outside of the first substrate. The first portion formed on the data PCB substrate, the second portion formed on the substrate in connection with the first portion and intersecting the end portion of the gate line near the gate pad group, and formed on the substrate in connection with the first portion. A third portion located on the substrate and located away from the gate pad group, and a fourth portion located on the substrate and located away from the data pad group to meet the second and third portions, and formed on the substrate and located away from the gate pad group. A repair line including a fifth portion intersecting the gate line and the third portion and a sixth portion extending from the gate PCB substrate to the substrate and overlapping the second portion is formed. At this time, the second portion and the fifth portion of the repair line preferably comprise the same layer as the data line.

Here, the fourth portion of the repair line preferably intersects the data line and is formed of the same layer as the gate line.

Meanwhile, the repair ship may further include a seventh part located between the second parts of the repair ship and meeting the second part.

The apparatus further includes an FPC film connecting the PCB board for the gate and the PCB board for the data, and the repair line is connected to the first and sixth parts and extends to the FPC film and the PCB board for the gate. It may further include.

The repair line further includes a ninth portion connected to the first portion and intersecting with an end portion close to the data pad group of the data line, wherein the fourth portion of the repair line crosses the data line and the ninth portion of the repair line It is preferable to consist of the same layer as a gate line.

The repair method of such a liquid crystal display device is as follows. First, a gate pad group including a plurality of gate lines formed on an insulating substrate and a plurality of gate pads formed at one end of the gate line, a plurality of data lines insulated from and intersecting the gate line to form a pixel region, and one end of the data line. Data pad group consisting of a plurality of data pads formed in the, the PCB substrate for the gate located on the outside of the first substrate, the data PCB substrate located on the outside of the first substrate, the first PCB formed on the data PCB substrate A second portion, which is connected to the first portion and formed on the substrate, intersects with an end portion close to the gate pad group of the gate line, and is formed on the substrate, which is connected to the first portion and located away from the gate pad group. Third and third portions formed on the substrate and located away from the data pad group A fourth portion that meets the powder, formed on the substrate, the fifth portion crossing the gate line and the third portion located away from the gate pad group, and extending from the gate PCB substrate to the substrate and overlapping the second portion The repair line which consists of the 6th part which has a part to become is formed. Next, at the first to fourth points where the disconnected gate line and the second portion of the repair line, the fifth portion of the gate line and the repair line, the third portion and the fifth portion of the repair line, and the second portion and the sixth portion of the repair line respectively meet. Short the broken gate and repair lines.

In this case, the repair ship may further include a seventh portion located between the second portions and meeting the second portion.

In addition, the FPC film may further include an FPC film connecting the PCB substrate for data and the PCB substrate for data, and the repair line is connected to the first and sixth portions and extends to the FPC film and the gate PCB substrate. It may further include a portion.

The repair line further includes a ninth portion connected to the first portion and intersecting with an end portion close to the data pad group of the data line, wherein the fourth portion of the repair line crosses the data line, and the fourth portion and the first portion of the repair line. It is preferable to form 9 parts in the same layer as a gate line.

Here, when the data line is disconnected, it is preferable to short-circuit the fifth point at which the fourth portion of the repair line intersects with the disconnected data line, and at the sixth point at which the ninth portion of the repair line intersects with the disconnected data line.

Also, the fourth portion of the repair line adjacent to the fifth point and the first portion of the repair line adjacent to the sixth point may be cut.

According to another embodiment of the present invention, a plurality of gate lines are formed on an insulating substrate, and a gate pad group including a plurality of gate pads is formed at one end of the gate line. A plurality of data lines are formed which are insulated from and cross the gate line to form a pixel region, and a data pad group including a plurality of data pads is formed at one end of the data line. A data PCB substrate is located outside the first substrate, and there are a plurality of gate TAB-ICs connected to the gate pad group and a plurality of data TAB-ICs connected to the data pad group. A plurality of signal transmission wires connecting the data PCB board and the TAB-IC for the gate are formed on the board. The first portion formed on the data PCB substrate, the second portion formed on the substrate in connection with the first portion and intersecting the end portion near the gate pad group of the gate line, and formed on the substrate connected to the first portion. A third portion located on the substrate and located away from the gate pad group, and a fourth portion located on the substrate and located away from the data pad group to meet the second and third portions, and formed on the substrate and located away from the gate pad group. A fifth part intersecting the gate line and the third part, a sixth part extending from the gate TAB-IC to the substrate and having a part overlapping with the second part, and one of the wirings for signal transmission It includes a repair ship consisting of seven parts, and the second part and the fifth part of the repair ship are formed on the same layer as the data line. It is.

It is preferable that the seventh portion of the repair line is made of the same layer as the gate line.

The repair method of such a liquid crystal display device is as follows. First, a gate pad group including a plurality of gate lines formed on an insulating substrate and a plurality of gate pads formed at one end of the gate line, a plurality of data lines insulated from and intersecting the gate line to form a pixel region, and one end of the data line. A data pad group consisting of a plurality of data pads formed on the substrate, a data PCB substrate located outside the first substrate, a plurality of gate TAB-ICs connected to the gate pad group, and a plurality of data pad groups connected to the data pad group TAB-IC for data, PCB for data and TAB-IC for gate are connected, and a plurality of signal transmission wirings are formed on the substrate, and the first part and the first part are formed on the data PCB substrate. It is formed on the substrate and connected to the first and second parts that intersect the end of the gate line closest to the gate pad group. A third portion formed on the plate and positioned away from the gate pad group, a fourth portion formed on the substrate and positioned away from the data pad group and meeting the second and third portions, formed on the substrate, The fifth portion crossing the gate line and the third portion located away from the third portion, the sixth portion extending from the gate TAB-IC to the substrate and having a portion overlapping the second portion, and a signal transmission wiring A repair line consisting of one seventh part is formed. Next, at the first to fourth points where the disconnected gate line and the second portion of the repair line, the fifth portion of the gate line and the repair line, the third portion and the fifth portion of the repair line, and the second portion and the seventh portion of the repair line respectively meet. Short the broken gate and repair lines.

In the present invention, when a gate line or a data line is disconnected by forming a repair line, a signal may be transmitted to the disconnected wire by shorting a point where the disconnected wire and the repair line intersect with a laser. By plotting the repair line, the parasitic capacitance between the gate line and the repair line can be reduced to reduce signal delay.

Then, the liquid crystal display device having the repair line and the repair method thereof according to the exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. do.

First, the structure of the liquid crystal display according to the first exemplary embodiment of the present invention will be described in detail with reference to FIG. 1.

1 is a plan view illustrating a repair line structure of a liquid crystal display according to a first exemplary embodiment of the present invention.

As shown in FIG. 1, a plurality of gate lines 10 are formed in the horizontal direction on the insulating substrate 1, and gate pads (not shown) are formed at left ends of the gate lines 10, respectively. Here, several gate pads are grouped together to form a plurality of gate pad groups 11. In addition, a plurality of data lines 20 insulated from the gate line 10 are formed in the vertical direction on the substrate 1, and data pads (not shown) are formed at upper ends of the data lines 20. . Several data pads are grouped together to form a plurality of data pad groups 21. A plurality of pixel regions P defined by the intersection of the gate line 10 and the data line 20 include a thin film transistor (not shown), which is a switching element, and a pixel electrode (not shown) made of a transparent conductive material such as ITO. Is formed. The pixel region P is collected to form a display region D for displaying an image, and an outer portion of the display region D, that is, a portion where the gate pad group 11 and the data pad group 21 are formed, is formed. It becomes a pad area. A gate PCB substrate 2 and a data PCB substrate 3 are attached to the left outer portion and the upper outer portion of the substrate 1, respectively, and the gate PCB substrate 2 and the data PCB substrate 3 are The gate pad group 11 and the data pad are respectively formed by the gate TAB-IC 40 and the data TAB-IC 50 having the respective driving ICs 60 and 70 and lead wires (not shown) connected thereto. It is electrically connected with the group 21. Here, the gate TAB-IC 40 and the data TAB-IC 50 correspond to each of the pad groups 11 and 21 one by one. In addition, a flexible printed circuit (FPC) film 80 for transmitting an electrical signal between the data PCB board 3 and the gate PCB board 2 connects the two (2, 3).

A ring-shaped repair line 30 is formed along the left, right, and bottom edges outside the display area D of the substrate 1, and the TAB-IC for the gate is formed on the upper left side of the substrate 1. Connected to 40, extending along gate PCB substrate 2, FPC film 80 and data PCB substrate 3, and at the top right of substrate 1 TAB-IC 50 for data Connected with At this time, the repair line 30 positioned on the substrate 1 is preferably formed of the same layer as the data line 20.

In the liquid crystal display according to the first exemplary embodiment of the present invention, a method of repairing the disconnected gate line 10 using repair lines is as follows.

When a disconnection occurs at a point a of the gate line 10, the laser beams are shorted to the points La1 and La2 where the disconnected gate line 10 and the repair line 30 cross each other. In this way, the gate signal is transmitted to the disconnection point a of the gate line 10 with the gate line 10 as the path l ₁ , and the gate PCB 10 opposite the disconnection point a is connected to the gate PCB. The gate signal is transmitted using the substrate 2, the FPC film 80, and the data PCB substrate 3 as a path l ₂ . At this time, the repair line 30 is cut at the points Ca1 and Ca2 adjacent to the points La1 and La2 that are short-circuited by the laser to prevent the signal from being transmitted to the repair line 30 at the lower edge of the substrate 1. It is desirable to reduce the signal delay. On the other hand, in this case, the disconnected point (a) is located in the upper part when the substrate 1 is divided into upper and lower, for example, and when the disconnection occurs in the lower part, the repair line 30 of the lower edge of the substrate 1 It is preferable to transmit the gate signal through the C1).

On the other hand, the first embodiment of the present invention, but the case where the FPC film 80 is attached as an example, in the absence of the FPC film 80 can be repaired by changing the shape of the repair line 30. This will be described as a second embodiment of the present invention with reference to FIG.

The structure of the liquid crystal display according to the second embodiment of the present invention has the same structure as that of the first embodiment except for the absence of the FPC film and the shape of the repair line 30. The repair line 30 is formed along the edges of the left, right, and bottom of the substrate 1 in a ring shape, is connected to the data TAB-IC 50 at the upper left of the substrate 1, and is a data PCB. It extends along the substrate 3 and is connected to the data TAB-IC 50 at the upper right of the substrate 1. In this case, the repair line 30 positioned on the substrate 1 is preferably formed of the same layer as the data line 20.

In the liquid crystal display according to the second exemplary embodiment of the present invention, the repairing of the disconnected gate line 10 using the repair line is as follows.

When a disconnection occurs at a point a of the gate line 10, the laser beams are shorted to the points La1 and La2 where the disconnected gate line 10 and the repair line 30 cross each other. In this way, the gate signal is transmitted to the disconnection point a of the gate line 10 with the gate line 10 as the path l ₁ , and the data TAB is transmitted to the gate line 10 opposite the disconnection point a. The gate signal is transmitted using the IC 50 and the data PCB substrate 3 as a path l ₂ . At this time, as in the first embodiment, it is preferable to cut the repair line 30 at the points Ca1 and Ca2 adjacent to the points La1 and La2 shorted by the laser to reduce the signal delay. On the other hand, in this case, the case where the disconnected point (a) is located at the upper side when the substrate 1 is divided into upper and lower, for example, and when the disconnection occurs at the lower side, as in the first embodiment, It is preferable to transmit the gate signal through the repair line 30 at the lower edge.

In the first and second embodiments of the present invention, a method of repairing a disconnected gate line 10 has been described. In the following, a method of repairing a disconnected data line 20 will be described with reference to FIG. 3. It demonstrates by 3 Example.

The liquid crystal display according to the third exemplary embodiment of the present invention has the same structure as the first exemplary embodiment except for the shape of the repair line 30.

As shown in FIG. 3, the repair line is formed on the first repair connection portion 31 formed on the data PCB board 3 and the second repair line formed along the left edge outside the display area D of the board 1. The connection part 32 is formed along the lower edge of the third repair connection part 33 formed along the right edge outside the display area D of the substrate 1 and along the lower edge of the display area D of the substrate 1. A fourth repair connection 34 intersecting the line 20, a data repair PCB 35 and a fifth repair connection 35 formed along the FPC film 80 and the gate PCB board 2. It is shaped like a ring.

A sixth repair connector 36 is formed at a portion adjacent to the data pad group 21 and intersects with the data line 20, and is connected to the first repair connector 31 and formed of the same layer as the gate line 10. It is.

At this time, the fourth repair connector 34 is formed of the same layer as the gate line 10, and the second and third repair connectors 32 and 33 are formed of the same layer as the data line 20. desirable.

In the liquid crystal display according to the third exemplary embodiment of the present invention, a method of repairing the disconnected data line 20 using repair lines is as follows.

When disconnection occurs at a point b of the data line 20, the point Lb1 at which the disconnected data line 20 and the sixth repair connection part 36 intersect, the data line 20, and the fourth repair The point Lb2 where the connection part 34 intersects and the point Lb3 where the second repair connection part 32 and the fourth repair connection part 34 meet are short-circuited using a laser. In this case, the data signal is transmitted to the disconnection point b of the data line 20 using the data line 20 as the path l ₃ , and the data line 20 opposite to the disconnection point b is connected to the data line 20. Data signals are transmitted using the second and fourth repair connections 35, 32, and 34 as a path l ₄ .

On the other hand, in this case, the disconnected point (b) is located on the left side when the substrate 1 is divided into left and right. For example, when the disconnection occurs on the right side, the data signal is transmitted through the third repair connector 33. It is desirable to deliver.

Meanwhile, in the first and second embodiments of the present invention, since the gate line 10 and the repair line 30 intersect with each other, parasitic capacitance formed by them increases, which may cause signal delay. The method will be described in the fourth to seventh embodiments of the present invention with reference to FIGS.

First, a repair line structure and a repair method of a liquid crystal display according to a fourth exemplary embodiment of the present invention will be described with reference to FIG. 4.

The liquid crystal display according to the fourth embodiment of the present invention has the same structure as the first embodiment except for the shape of the repair line.

As shown in FIG. 4, a ring-shaped repair line 30 is formed along the right and bottom edges outside the display area D of the substrate 1, and the data TAB- for the upper right side of the substrate 1 is formed. It is connected to the IC 50 and extends to the data PCB board 3. In addition, the repair line 30 passes from the data PCB substrate 3 to the upper left side of the substrate 1, the gate line 10 and the lower portion of the first gate TAB-IC 40, to the gate PCB substrate 2. It extends above and is connected to the repair line 30 below the substrate 1 through the bottom of the lowermost TAB-IC 40 for the gate. On the other hand, the repair line 29 is formed along the right and bottom edges outside the display area D of the substrate 1, and is connected to the data TAB-IC 50 at the upper right of the substrate 1. And extends to the data PCB substrate 3. In addition, the repair line 29 extends over the gate PCB substrate 2 from the data PCB substrate 3 through the upper left of the substrate 1 and the upper portion of the first gate TAB-IC 40. It is connected to the repair line 29 below the substrate 1 through the upper portion of the lower gate TAB-IC 40 and the gate line 10.

At this time, the portion of the repair line 30 positioned on the substrate 1 is preferably formed of the same layer as the data line 20.

In the liquid crystal display according to the fourth exemplary embodiment of the present invention, a method of repairing the disconnected gate line 10 using repair lines is as follows.

When a disconnection occurs at a point a1 of the gate line 10 on the substrate 1, the laser beam is used at a point where the gate line 10 and the repair line 30 intersect the disconnection. Short circuit. In this way, the gate signal is transmitted to the disconnection point a1 of the gate line 10 with the gate line 10 as the path l ₁ , and the data TAB is transmitted to the gate line 10 opposite to the disconnection point a1. The gate signal is transmitted using the IC 50, the data PCB board 3, and the gate line 10 as a path l ₂ . At this time, it is preferable to cut the repair line 30 at points Ca1 and Ca2 adjacent to the points La1 and La2 shorted by the laser to reduce the signal delay.

In addition, when disconnection occurs at a point a2 of the gate line 10 under the substrate 1, the laser beam is used at a point La3 at which the gate line 10 and the repair line 29 intersect the disconnection. Short circuit. In this way, the gate signal is transmitted to the disconnection point a2 of the gate line 10 with the gate line 10 as the path l ₃ , and the gate TAB is provided to the gate line 10 opposite to the disconnection point a2. IC 40, gate PCB substrate 2, data TAB-IC 50, data PCB substrate 3, repair line 29 and gate line 10 as path l ₄ . The gate signal is delivered. At this time, it is desirable to cut the repair line 29 at points Ca3 and Ca4 adjacent to the points La3 and La4 shorted by the laser to reduce the signal delay.

Meanwhile, in the fourth embodiment of the present invention, a repair method in the case where disconnection of the gate line 10 connected to the gate TAB-IC 40 positioned at the top and the bottom thereof has been described. -When the number of the IC 40 is three or more, the same number of repair lines are formed to cross the gate line 10, or when the number of the gate TAB-ICs 40 is large, two or three units are used. A repair line may be formed to intersect the gate line 10.

In this way, the parasitic capacitance can be reduced because the number of gate lines 10 overlapping with the repair lines 29 and 30 is reduced than in the first and second embodiments.

Compared to the first embodiment, the liquid crystal display according to the fifth exemplary embodiment of the present invention does not overlap the end portion of the gate line 10 with the repair line 30, and the shape of the repair line 30 is different. Except for the same structure.

As shown in FIG. 5, the repair line is formed along the left edge of the first repair connection portion 31 formed on the data PCB substrate 3, and outside the display area D of the substrate 1, and includes a gate pad group ( A plurality of second repair connections 32 intersecting with the gate line 10 adjacent to 11, a third repair connection 33 formed along the right edge of the substrate 1 outside the display area D, and the board A fourth repair connector 34 formed along the lower edge outside the display area D of (1) and intersecting the second repair connector 32 positioned at the bottom, the PCB board 3 for data and the FPC A fifth repair connection part 35 is formed along the film 80 and the gate PCB substrate 2 to form a ring shape.

In addition, a plurality of seventh repair connectors 39 are formed on the gate PCB substrate 2 and the TAB-IC 40 for the gate, and the ends thereof and the plurality of second repair connectors 32 intersect. A plurality of sixth repair connectors 38 are formed at portions intersecting with the third repair connectors 33 and the gate lines 10.

In this case, the second and sixth repair connectors 32 and 38 are formed of the same layer as the data line 20, and the remaining repair connectors formed on the substrate 1 are formed of the same layer as the gate line 10. It is.

In the liquid crystal display according to the fifth exemplary embodiment of the present invention, a method of repairing the disconnected gate line 10 using repair lines is as follows.

When a disconnection occurs at a point a of the gate line 10, a point La1 at which the disconnected gate line 10 and the second repair connection part 32 intersect, the gate line 10, and the sixth repair The point La2 where the connection part 3 intersects, the point La3 where the sixth repair connection part 38 and the third repair connection part 33 intersect, and the seventh repair connection part 39 and the second repair connection part 32. The point where La4 intersects is short-circuited using a laser. In this way, the gate signal is transmitted to the disconnection point a of the gate line 10 by using the gate line 10 as the path l ₁ , and the fifth repair is performed on the gate line 10 opposite to the disconnection point a. The gate signal is transmitted using the connection part 35, the first repair connection part 31, the sixth repair connection part 38, and the gate line 10 as a path l ₂ . In this case, instead of shorting at La4, the seventh repair connection part 39 and the second repair connection part 32 may be connected when the pixel electrode is formed in the manufacturing process of the substrate 1.

As described above, in the fifth embodiment of the present invention, since the portion where the second repair connection portion 32 overlaps the gate line 10 is smaller than in the first and second embodiments, the signal delay can be reduced by reducing the parasitic capacitance. .

On the other hand, in this case, the disconnected point (a) is located in the upper part when the substrate 1 is divided into upper and lower, for example, and when the disconnection occurs in the lower part, the repair line 30 of the lower edge of the substrate 1 It is preferable to transmit the gate signal through the C1).

Next, a case in which there is no FPC film 80 in the fifth embodiment will be described with reference to FIG. 6 as a sixth embodiment of the present invention. The structure of the liquid crystal display according to the sixth embodiment of the present invention is the same as that of the fifth embodiment except for the case where there is no FPC film and the structure of the repair line.

As shown in FIG. 6, the repair line is formed along the left edge of the first repair connection portion 31 formed on the data PCB substrate 3 and the outside of the display area D of the substrate 1. 11, a plurality of second repair connectors 32 intersecting with the gate line 10 adjacent to each other, a third repair connector 37 overlapping ends of the plurality of second repair connectors, and a display area of the substrate 1. D) a fourth repair connector 33 formed along the right edge of the outer side, and a second repair connector 32 formed along the lower edge of the display area D of the substrate 1 and located at the bottom thereof. The fifth repair connection portion 34 overlaps with the end of the ring shape.

In addition, a plurality of sixth repair connectors 38 are formed at portions intersecting with the fourth repair connectors 33 and the gate lines 10, and the PCB PCB 2 for gates and the TAB-IC 40 for gates are formed. A plurality of seventh repair connections 39 are formed above, and their ends and a plurality of second repair connections 32 intersect.

In this case, the second and sixth repair connectors 32 and 38 are formed of the same layer as the data line 20, and the remaining repair connectors formed on the substrate 1 are formed of the same layer as the gate line 10. It is.

In this case, the second and sixth repair connectors 32 and 38 are formed in the same layer as the data line 20 and are floated without contacting the remaining repair connectors 33, 34 and 37 formed on the substrate 1. have.

In the liquid crystal display according to the sixth exemplary embodiment of the present invention, the repairing of the disconnected gate line 10 using the repair line is as follows.

When a disconnection occurs at a point a of the gate line 10, a point La1 at which the disconnected gate line 10 and the second repair connection part 32 intersect, the gate line 10, and the sixth repair The point La2 where the connection part 38 crosses, the point La3 where the fourth repair connection part 33 and the sixth repair connection part 38 intersect, and the second repair connection part 32 and the third repair connection part 37. The intersection La is shorted using a laser. In this case, the gate signal is transmitted to the disconnection point a of the gate line 10 by using the gate line 10 as the path l ₁ , and the third and third gate signals 10 are connected to the gate line 10 opposite the disconnection point a. The gate signal is transmitted using the first and fourth repair connections 37, 31, and 33 as a path l ₂ . In this case, instead of shorting at La4, the third repair connection part 37 and the second repair connection part 2 may be connected when the pixel electrode is formed in the manufacturing process of the substrate 1. On the other hand, in this case, when the disconnected point (a) is located at the upper side when the substrate 1 is divided into upper and lower, for example, and when the disconnection occurs in the lower portion, the gate signal is transmitted through the fifth repair connection part 34. It is desirable to deliver.

As described above, in the sixth embodiment of the present invention, since the portion where the second repair connection portion 32 overlaps with the gate line 10 is smaller than in the first and second embodiments, the signal delay can be reduced by reducing the parasitic capacitance. .

Meanwhile, the signal may be applied from the data PCB substrate 3 to the gate TAB-IC 40 without using the gate PCB substrate 2. In this case, a wiring is formed on the data TAB-IC 50 and a signal transmission wiring that can be connected to the gate driving IC 60 is formed on the substrate 1 to connect the two wirings to the data PCB substrate 3. The applied gate signal is transferred to the gate driving IC 60. In this case, the seventh embodiment of the present invention will be described with reference to Figs.

FIG. 7 is a plan view illustrating a structure of a repair line of a liquid crystal display according to a seventh exemplary embodiment of the present invention, and FIG. 8 is an enlarged plan view of part VII in FIG. 7.

As shown in FIGS. 7 and 8, the repair line is formed along the left edge of the first repair connection portion 31 formed on the data PCB substrate 3, and outside the display area D of the substrate. A plurality of second repair connections 32 intersecting with the gate line 10 adjacent to (11), a third repair connection 33 formed along the right edge outside the display area D of the substrate 1, TAB-IC for the fourth repair connection 34 and the gate, which is formed along the lower edge of the display area D of the substrate 1 and intersects with the end of the second repair connection 32 located at the bottom thereof. It is connected to the 40 and the data TAB-IC (50) and consists of a fifth repair connector 320 formed on the upper left of the substrate 1 to form a ring shape. Here, the fifth repair connector 320 is one of a plurality of signal transmission wires for receiving a signal applied from the PCB board 3 connected to the data TAB-IC 50, and the gate TAB-IC 40. Is connected to one of the wirings 321 formed inside the s.

A plurality of sixth repair connectors 38 are formed at the intersection with the third repair connector 33 and the gate line 10, and are connected to the wiring 321 in the TAB-IC 40 for the gate. A plurality of seventh repair connections 37 are formed to intersect the ends of the two repair connections 32.

In this case, the second and sixth repair connectors 32 and 38 are formed of the same layer as the data line 20, and the remaining repair connectors 33, 34, 37, and 320 are formed of the same layer as the gate line 10. Formed.

In the liquid crystal display according to the seventh exemplary embodiment of the present invention, a method of repairing a disconnected gate line 10 using repair lines is as follows.

When a disconnection occurs at a point a of the gate line 10, a point La1 at which the disconnected gate line 10 intersects the second repair connection part 32, and the disconnected gate line 10 6 the point (La2) where the repair connection 38 intersects, the point (La3) where the third repair connection (33) and the sixth repair connection (38) intersect, and the second repair connection (32) and the fifth repair connection ( The point La4 where 320 crosses each other is short-circuited using a laser. In this case, the gate signal is transmitted to the disconnection point a of the gate line 10 by using the gate line 10 as the path l ₁ , and the gate line 10 opposite to the disconnection point a is connected to the gate line 10. The gate signal is transmitted using the first and third repair connectors 320, 31, and 33 as a path l ₂ .

On the other hand, when disconnection occurs in the gate line 10 connected to the TAB-IC 40 for the first and subsequent gates above, the point where the disconnected gate line 10 and the second repair connection portion 32 cross each other, The point where the disconnected gate line 10 and the sixth repair connector 38 intersect, and the seventh repair connector 37 and the second repair connector 32 which intersect the upper and lower points centering on the gate TAB-IC 40 intersect each other. The point and the point where the second repair connector 32 and the fifth repair connector 320 intersect are shorted using a laser.

As described above, in the seventh embodiment of the present invention, since the portion where the second repair connection portion 32 overlaps with the gate line 10 is smaller than in the first and second embodiments, the signal delay can be reduced by reducing the parasitic capacitance. .

Next, the case where the data line 20 is disconnected in the fifth embodiment of the present invention will be described with reference to FIG. 9 as an eighth embodiment of the present invention.

The eighth embodiment of the present invention has the same structure as the fifth embodiment except for the shape of the repair line.

As shown in FIG. 9, the repair line is formed along the left edge of the first repair connection portion 31 formed on the data PCB substrate 3, and outside the display area D of the substrate 1, and has a gate pad group. A plurality of second repair connections 32 intersecting with the gate line 10 adjacent to (11), a third repair connection 33 formed along the right edge outside the display area D of the substrate 1, A fourth repair connection portion formed outside the display area D of the substrate 1 to intersect with the data line 20 along the lower edge and intersect the end of the second repair connection portion 32 positioned at the lowermost portion ( 34) and a seventh repair connection part 35 formed along the data PCB board 3 and the FPC film 80 and the gate PCB board 2 to form a ring shape.

In addition, a plurality of fifth repair connectors 38 are formed at portions intersecting with the third repair connectors 33 and the gate lines 10, and the PCB PCB 2 for gates and the TAB-IC 40 for gates are formed. A plurality of sixth repair connectors 39 are formed thereon and their ends and a plurality of second repair connectors 32 intersect. In this case, the sixth repair connection part 39 is formed at two upper and lower portions of each gate TAB-IC 40, and is connected to each other on the gate PCB substrate 2. An eighth repair connector 36 is formed at a portion adjacent to the data pad group 21 and intersects with the data line 20, and is connected to the first repair connector 31 and is formed of the same layer as the gate line 10. It is.

In this case, the second and fifth repair connectors 32 and 38 are formed of the same layer as the data line 20, and the remaining repair connectors 33, 34, and 36 formed on the substrate 1 may include gate lines ( It is formed of the same layer as 10).

In this case, the second and fifth repair connectors 32 and 38 are formed of the same layer as the gate line 10 and are floated without contacting the remaining repair connectors 33, 34, and 36.

In the liquid crystal display according to the eighth embodiment of the present invention, a method of repairing the disconnected data line 20 using repair lines is as follows.

When disconnection occurs at a point b of the data line 20, the point Lb1 at which the disconnected data line 20 and the eighth repair connection part 36 intersect, the data line 20, and the fourth repair The point Lb2 at which the connection portion 34 intersects is shorted using a laser. In this way, the data signal is transmitted to the disconnection point b of the data line 20 with the data line 20 as the path l ₃ , and the first repair is performed to the data line 20 opposite to the disconnection point b. The data signal is transmitted using the connection part 31, the third repair connection part 33, and the fourth repair connection part 34 as a path l ₄ .

On the other hand, the point where the second repair connector 32 and the sixth repair connector 39 meet and the point where the second repair connector 32 and the fourth repair connector 34 positioned at the bottom meet each other, the pixel electrode forming process. When connected to each other in the first repair connection 31, the seventh repair connection 35, the second repair connection 32, the seventh repair connection 39 and the fourth repair connection 34 route ( l ₅ May be transmitted. At this time, one point Cb1 of the first repair connection part 31 adjacent to the eighth repair connection part 36 is cut and the fourth repair connection part 34 is located at a point Cb2 adjacent to the point Lb2 that is shorted by a laser. It is desirable to cut a) to reduce the signal propagation and signal delay.

As such, when the gate line 10 or the data line 20 is disconnected using the ring-shaped repair line, repair can be effectively performed.

As described above, in the present invention, when the gate line or the data line is disconnected by forming a ring-shaped repair line, a signal may be transmitted to the disconnected wire by shorting a point where the disconnected wire and the repair line cross using a laser. By plotting the repair line that intersects the gate line, the parasitic capacitance generated between the gate line and the repair line can be reduced to reduce the signal delay.

Claims (31)

Insulation board, A plurality of gate lines formed on the substrate, A gate pad group including a plurality of gate pads formed at one end of the gate line, A plurality of data lines insulated from and intersecting the gate lines to form a pixel region; A data pad group including a plurality of data pads formed at one end of the data line, A PCB substrate for a gate positioned outside the first substrate, PCB for data located on the outside of the first substrate, A first portion formed on the data PCB substrate, a second portion connected to the first portion and formed on the substrate and intersecting with an end portion of the gate line close to the gate pad group, the first portion A repair line formed on the substrate and connected to a third portion that intersects an end portion of the gate line that is far from the gate pad group, and a fourth portion that meets the second and third portions. Liquid crystal display comprising a. In claim 1, And second to fourth portions of the repair line are formed on the same layer as the data line. In claim 1, And a FPC film connecting the gate PCB substrate and the data PCB substrate. The method of claim 1 or 3, The repair line further includes a fifth portion connected to the first portion and the second portion and extending to the FPC film and the PCB substrate for the gate. In claim 1, The repair line further includes a sixth portion connected to a first portion and intersecting an end portion of the data line close to the data pad group, wherein the fourth portion of the repair line is from the data pad group of the data line. Liquid crystal display that intersects with the far end. In claim 5, And a fourth portion and a sixth portion of the repair line are formed in the same layer as the gate line. In claim 1, And two or more repair lines are formed. In claim 7, And a second portion of the repair line crosses at least one or more gate line groups connected to the gate pad group. A gate pad group including a plurality of gate lines formed on an insulating substrate, a plurality of gate pads formed at one end of the gate line, a plurality of data lines insulated from and intersecting the gate lines to form a pixel region, and one of the data lines A data pad group including a plurality of data pads formed at an end, a PCB substrate for a gate located outside the first substrate, a data PCB substrate positioned outside the first substrate, and formed on the data PCB substrate. A first portion formed on the substrate connected to the first portion and intersecting an end portion close to the gate pad group of the gate line, and formed on the substrate connected to the first portion And intersecting an end portion farther from the gate pad group of the gate line. Forming a repair line consisting of a portion, a fourth portion that meets the second and third portions, And shorting the gate line having the disconnection and the repair line at first and second points at which the disconnected gate line intersects the second and third portions of the repair line, respectively. In claim 9, And cutting a portion adjacent to the first and second points among the second and third portions of the repair line, respectively. In claim 9, And a FPC film connecting the gate PCB board and the data PCB board, wherein the repair line is connected to the first and second parts and extends to the FPC film and the gate PCB board. Repair method of a liquid crystal display device further comprising 5 parts. In claim 9, The repair line further includes a sixth portion connected to a first portion and intersecting an end portion of the data line close to the data pad group; A fourth portion of the repair line intersects the data line, And a fourth portion and a sixth portion of the repair line as the same layer as the gate line. In claim 12, When the data line is disconnected, a third point at which the fourth portion of the repair line and the disconnected data line intersect, a fourth point at which the sixth portion of the repair line intersects the disconnected data line, and the repair line And shorting a fifth point at which the second portion and the fourth portion intersect. Insulation board, A plurality of gate lines formed on the substrate, A gate pad group including a plurality of gate pads formed at one end of the gate line, A plurality of data lines insulated from and intersecting the gate lines to form a pixel region; A data pad group including a plurality of data pads formed at one end of the data line, A PCB substrate for a gate positioned outside the first substrate, PCB for data located on the outside of the first substrate, A first portion formed on the data PCB substrate, a second portion connected to the first portion and formed on the substrate and intersecting with an end portion of the gate line close to the gate pad group, the first portion A third portion formed on the substrate and located away from the gate pad group, and a fourth portion formed on the substrate and located away from the data pad group to meet the second and third portions, A fifth portion formed on the substrate, the fifth portion crossing the gate line and the third portion located away from the gate pad group, and extending from the gate PCB substrate to the substrate; Repair ship consisting of sixth parts with overlapping parts Including; And a second portion and a fifth portion of the repair line have the same layer as the data line. The method of claim 14, And a fourth portion of the repair line intersects the data line. The method of claim 14, And a fourth portion of the repair line is formed of the same layer as the gate line. The method of claim 16, And the repair line further includes a seventh portion interposed between the second portion of the repair line and in contact with the second portion. The method of claim 14, The liquid crystal display device further comprising an FPC film connecting the gate PCB substrate and the data PCB substrate. The method of claim 14 or 18, The repair line further includes an eighth portion connected to the first portion and the sixth portion and extending to the FPC film and the gate PCB substrate. The method of claim 14, The repair line may further include a ninth portion connected to a first portion and intersecting an end portion of the data line that is close to the data pad group, and the fourth portion of the repair line may cross the data line. . The method of claim 20, And a ninth portion of the repair line is formed of the same layer as the gate line. A gate pad group including a plurality of gate lines formed on an insulating substrate, and a plurality of gate pads formed at one end of the gate line, A data pad group including a plurality of data lines insulated from and intersecting the gate line to form a pixel region, and a plurality of data pads formed at one end of the data line; A gate PCB substrate positioned outside the first substrate, a data PCB substrate positioned outside the first substrate, A first portion formed on the data PCB substrate, a second portion connected to the first portion and formed on the substrate and intersecting with an end portion of the gate line close to the gate pad group, the first portion A third portion formed on the substrate and located away from the gate pad group, and a fourth portion formed on the substrate and located away from the data pad group to meet the second and third portions, A fifth portion formed on the substrate, the fifth portion crossing the gate line and the third portion located away from the gate pad group, and extending from the gate PCB substrate to the substrate; Forming a repair line consisting of a sixth portion having an overlapping portion, The first to second portions of the gate line and the repair line where disconnection occurs, the fifth portion of the gate line and the repair line, the third and fifth portions of the repair line, and the second and sixth portions of the repair line, respectively. And shorting the gate line and the repair line having a disconnection at a fourth point. The method of claim 22, And the repair line further includes a seventh portion interposed between the second portion and in contact with the second portion. The method of claim 22, The repair method of a liquid crystal display device further comprising an FPC film connecting the gate PCB substrate and the data PCB substrate. The method of claim 24, The repair line may further include an eighth portion connected to the first portion and the sixth portion and extending to the FPC film and the PCB substrate for the gate. The method of claim 22, The repair line further includes a ninth portion connected to a first portion and intersecting an end portion of the data line that is close to the data pad group. A fourth portion of the repair line intersects the data line, And a fourth portion and a ninth portion of the repair line as the same layer as the gate line. The method of claim 26, When the data line is disconnected, shorting a fifth point at which the fourth portion of the repair line and the disconnected data line intersect, and shorting a sixth point at which the ninth portion of the repair line crosses the disconnected data line Repair method of the liquid crystal display device further comprising. The method of claim 27, And cutting a fourth portion of the repair line adjacent to the fifth point and a first portion of the repair line adjacent to the sixth point. Insulation board, A plurality of gate lines formed on the substrate, A gate pad group including a plurality of gate pads formed at one end of the gate line, A plurality of data lines insulated from and intersecting the gate lines to form a pixel region; A data pad group including a plurality of data pads formed at one end of the data line, PCB for data located on the outside of the first substrate, A plurality of gate TAB-ICs connected to the gate pad group; A plurality of data TAB-ICs connected to the data pad group; A plurality of signal transmission wirings connected to the data PCB substrate and the gate TAB-IC and formed on the substrate; A first portion formed on the data PCB substrate, a second portion connected to the first portion and formed on the substrate and intersecting with an end portion of the gate line close to the gate pad group, the first portion A third portion formed on the substrate and located away from the gate pad group, and a fourth portion formed on the substrate and located away from the data pad group to meet the second and third portions, A fifth portion formed on the substrate, the fifth portion intersecting the gate line and the third portion located away from the gate pad group, and extending from the gate TAB-IC to the substrate; A number consisting of a sixth portion having a portion overlapping with and a seventh portion which is one of the signal transmission wirings Lee Sun Including; And a second portion and a fifth portion of the repair line have the same layer as the data line. The method of claim 29, The seventh portion of the repair line is formed of the same layer as the gate line. A gate pad group including a plurality of gate lines formed on an insulating substrate, and a plurality of gate pads formed at one end of the gate line, A plurality of data lines insulated from and intersecting the gate line to form a pixel area, a data pad group including a plurality of data pads formed at one end of the data line, PCB for data located on the outside of the first substrate, A plurality of gate TAB-ICs connected to the gate pad group, a plurality of data TAB-ICs connected to the data pad group, A plurality of signal transmission wirings connected to the data PCB substrate and the gate TAB-IC and formed on the substrate; A first portion formed on the data PCB substrate, a second portion connected to the first portion and formed on the substrate and intersecting with an end portion of the gate line close to the gate pad group, the first portion A third portion formed on the substrate and located away from the gate pad group, and a fourth portion formed on the substrate and located away from the data pad group to meet the second and third portions, A fifth portion formed on the substrate, the fifth portion intersecting the gate line and the third portion located away from the gate pad group, and extending from the gate TAB-IC to the substrate; A number consisting of a sixth portion having a portion overlapping with and a seventh portion which is one of the signal transmission wirings Forming a wire, The first to second portions of the gate line and the repair line where disconnection occurs, the fifth portion of the gate line and the repair line, the third and fifth portions of the repair line, and the second and seventh portions of the repair line, respectively. And shorting the gate line having the disconnection at the fourth point and the repair line.