WO2017107951A1

WO2017107951A1 - Liquid crystal display panel and method of repairing same

Info

Publication number: WO2017107951A1
Application number: PCT/CN2016/111491
Authority: WO
Inventors: 刘文雄; 王鸣昕
Original assignee: 南京中电熊猫液晶显示科技有限公司
Priority date: 2015-12-23
Filing date: 2016-12-22
Publication date: 2017-06-29
Also published as: CN105446036A; CN105446036B

Abstract

Disclosed are a liquid crystal display panel (100) and a method of repairing the same. The liquid crystal display panel (100) comprises: a source driver (20); a plurality of data lines (21) connected to the source driver (20), each data line (21) comprising a wiring section (211) located in a non-display area (102) and a pixel section (212) located in a display area (101); a first suspension line (22) intersecting and traversing one ends of the respective wiring sections (211); a second suspension line (23) intersecting and traversing the other ends of the respective wiring sections (211); a wiring repair line (24), two ends of the wiring repair line (24) respectively overlapping the first suspension line (22) and the second suspension line (23); and a pixel repair line (25), one end of the pixel repair line (25) overlapping the wiring repair line (24), and the other end of the pixel repair line (25) overlapping the respective pixel sections (212). Each suspension line is insulated and isolated from the respective wiring sections (211) and the wiring repair line (24). The wiring repair line (24) is insulated and isolated from the pixel repair line (25). The pixel repair line (25) is insulated and isolated from the respective pixel sections (212). The invention can repair not only a broken line in the display area (101) but also a broken line in a wiring area, thereby solving a problem of repairing a broken data line (21).

Description

Liquid crystal display panel and repairing method thereof

This patent application claims that the Chinese patent application number submitted on December 23, 2015 is 201510976587.4, and the applicant is Nanjing Zhongdian Panda Liquid Crystal Display Technology Co., Ltd., and the invention name is “a liquid crystal display panel and its repair method”. The full text of the application is hereby incorporated by reference.

Technical field

The present invention relates to the technical field of liquid crystal display, and in particular to a liquid crystal display panel and a repair method thereof.

Background technique

Liquid crystal displays have gradually become the mainstream of various types of display devices due to their thinness, energy saving and environmental protection. The key component of the liquid crystal display is a liquid crystal panel composed of an array substrate and a color filter substrate. A plurality of driving chips (ICs) are disposed in the non-display area of the array substrate for driving the data lines in the display area of the array substrate, so that the driving is performed. The terminals of the IC are densely connected with the terminals of the driver IC and the data lines. The disconnection of each of the wires causes the LCD panel to have line defects, which affects the yield of the product.

The wiring area outside the display panel has a higher density of the line, and the line-to-line spacing is smaller than the line spacing in the display area, and the line width is equivalent to the display area, so that a short circuit or an open circuit is likely to occur. The wire break repair solution can only repair broken wires in the display area, and cannot repair the broken wires in the wiring area.

Summary of the invention

The object of the present invention is to provide a liquid crystal display panel and a repairing method thereof, which can repair the disconnection of the display area and repair the disconnection of the wiring area, thereby solving the problem of repairing the data line disconnection.

The embodiment of the invention provides a liquid crystal display panel having a display area and a non-display area outside the display area, the liquid crystal display panel comprising:

Source driver

a plurality of data lines connected to the source driver, each of the data lines includes a wiring segment located in the non-display area and a pixel segment located in the display area;

a first suspension line staggered across one end of each of the wiring segments;

a second suspension line staggered across the other end of each of the wiring segments;

a wiring repair line having two ends overlapping the first suspension line and the second suspension line;

a pixel repairing line, one end overlapping the wiring repairing line, and the other end overlapping each pixel segment;

Each suspension line is insulated from each of the wiring segments, and each suspension line is insulated from the wiring repair line, and the wiring repair line is insulated from the pixel repair line, and the pixel repair line and each The pixel segments are insulated and isolated.

Further, each of the suspension lines and the respective wiring segments are located in different layers and the two are provided with an insulating layer at the overlap.

Further, each of the suspension lines and the wiring repair line are located at different layers and the two are provided with an insulating layer at the overlap.

Further, the wiring repair line and the pixel repairing line are located in different layers and the two are provided with an insulating layer at the overlap.

Further, the pixel repairing line and each pixel segment are located in different layers and the two are provided with an insulating layer at the overlap.

Further, the first floating line, the second floating line and the pixel repairing line are located in the same layer, and each of the wiring segments, each pixel segment and the wiring repairing line are located in the same layer.

Further, the two wiring repair lines are respectively located at two sides of each wiring section.

Further, each of the first suspension line, the second suspension line, the wiring repair line, and the pixel repair line are respectively formed to form two sets of repair lines.

Further, the first suspension line, the second suspension line, the wiring repair line, and the pixel repair line are all located in a non-display area.

Further, the liquid crystal display panel has opposite first and second sides and a third side connecting the first side and the second side, and the source driver is disposed in the the first On the side, the pixel repair line is drawn from the first side and disposed around the third side until extending to the second side.

The embodiment of the present invention further provides a method for repairing a liquid crystal display panel, which is used for repairing when a data line break occurs in the liquid crystal display panel, and the repairing method includes the following steps:

Electrically connecting the wiring segment of the disconnected data line to the first floating line;

Electrically connecting the first suspension line to the wiring repair line;

According to the specific position where the disconnection occurs, the wiring repair line and the pixel repair line are kept in an isolated state or the wiring repair line is electrically connected to the pixel repair line.

Further, when the disconnection occurs on the wiring segment of the data line, the wiring repair line is kept in an isolated state from the pixel repair line, the wiring repair line is electrically connected to the second suspension line, and the second suspension is The line is electrically connected to the wiring section of the data line in which the disconnection occurs.

Further, when the disconnection occurs on the pixel segment of the data line, the wiring repair line is electrically connected to the pixel repair line, and the pixel repair line is electrically connected to the pixel segment of the disconnected data line.

Further, when the disconnection occurs simultaneously on the wiring segment and the pixel segment of the data line, the wiring repair line is electrically connected to the second floating line, and the second floating line and the disconnected data line are wired. The segments form an electrical connection, electrically connect the wiring repair line to the pixel repair line, and electrically connect the pixel repair line to the pixel segment of the broken data line.

Further, the manner of forming the electrical connection is laser welding.

The invention has the beneficial effects that the liquid crystal display panel and the repairing method thereof provided by the embodiments of the invention can repair the disconnection of the display area and repair the disconnection of the wiring area, thereby solving the simultaneous occurrence of the display area on the data line. Broken wire repair problem when wire breakage and wiring area are broken.

BRIEF abstract

FIG. 1 is a schematic diagram of a liquid crystal display panel according to an embodiment of the present invention.

2 is an enlarged schematic view showing a wiring area of a driving chip of FIG. 1.

Figure 3 is a schematic view of the repair point A in Figure 1.

Figure 4 is a schematic view of the repair point B in Figure 1.

Figure 5 is a schematic view of the repair point C in Figure 1.

Figure 6 is a schematic view of the repair point D or G in Figure 1.

Preferred embodiment of the invention

In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be further described with reference to the accompanying drawings.

1 is a schematic diagram of a liquid crystal display panel according to an embodiment of the present invention. Referring to FIG. 1, a liquid crystal panel 100 has a display area 101 and a non-display area 102 outside the display area 101, a plurality of source drivers 20 and a plurality of gate drivers. (not shown) is disposed in the non-display area 102, and a plurality of data lines 21 and a plurality of scan lines (not shown) are respectively connected to the source driver 20 and the gate driver, and the plurality of data lines 21 and the plurality of lines The intersection area of the scan lines defines a plurality of pixels, the external data signals are input to the data lines 21 via the source driver 20, and then transmitted to the respective pixels of the display area 101 via the data lines 21.

Each of the data lines 21 includes a wiring section 211 located in the non-display area 102 and connected to the source driver 20, and a pixel section 212 located in the display area 101 and connected to each pixel. The data signals input from the source driver 20 are sequentially transferred from the wiring segments 211 of the non-display area 102 to the pixel segments 212 of the display area 101, so that the order is transmitted on the entire data line 21. The disconnection of each of the data lines 21 causes a line defect in the liquid crystal display panel, thereby affecting the yield of the product.

2 is an enlarged schematic view of a wiring area of a driving chip of FIG. 1. Referring to FIG. 1 and FIG. 2, in order to solve the problem of data line disconnection, a first floating line 22 and a second are further disposed in the non-display area 102. The floating line 23, the wiring repair line 24, and the pixel repair line 25 are used to solve the problem that the wiring section 211 is broken and the pixel section 212 is broken.

The first floating line 22 is staggered across one end of each of the wiring segments 211, and the second floating line 23 is staggered across the other end of each of the wiring segments 211. In this embodiment, each of the

suspension lines

22, 23 and the respective wiring segments 211 are vertically staggered. Each of the

suspension lines

22, 23 and the respective wiring segments 211 are located in different layers, and the two are provided with an insulating layer at the overlap. Specifically, the first suspension line 22 and the second suspension line 23 may be located in the same layer and disposed above or below the layer where each wiring segment 211 is located.

The two ends of the wiring repairing line 24 overlap the first floating line 22 and the second floating line 23, respectively, that is, one end of the wiring repairing line 24 overlaps with the first floating line 22, and the other end of the wiring repairing line 24 It is disposed overlapping the second floating line 23. Each of the suspension lines 22, 23 and the wiring repair line 24 are located in different layers, and the two are provided with an insulating layer at the overlap.

The pixel repair line 25 has one end overlapping the wiring repair line 24 and the other end overlapping each pixel segment 212. The wiring repair line 24 and the pixel repair line 25 are located in different layers, and the two are provided with an insulating layer at the overlap. The pixel repair line 25 is located at a different layer from each of the pixel segments 212, and both are provided with an insulating layer at the overlap.

Specifically, the first floating line 22, the second floating line 23, and the pixel repair line 25 may be located in the same layer, and each of the wiring segments 211, each of the pixel segments 212, and the wiring repair line 24 may also be located in the same layer, but A floating line 22, a second floating line 23, and a pixel repair line 25 need to be in different layers from the respective wiring segments 211, the respective pixel segments 212, and the wiring repair lines 24, which simplifies the structure and simplifies the process.

Thus, when the liquid crystal display panel is not repaired, each of the suspension lines 22, 23 and the wiring segments 211 are insulated and insulated by an insulating layer, and each of the suspension lines 22, 23 and the wiring repairing line 24 are insulated and insulated by an insulating layer. The line repair line 24 is insulated from the pixel repair line 25 by an insulating layer, and the pixel repair line 25 is insulated from each pixel segment 212 by an insulating layer.

In this embodiment, the first suspension line 22, the second suspension line 23, the wiring repair line 24, and the pixel repair line 25 are respectively two, thereby forming two sets of repair lines, which can be under each of the source drivers 20. Two data lines are repaired by wire breakage.

Specifically, the two wiring repair lines 24 may be respectively located on both sides of each of the wiring segments 211, that is, the two wiring repairing lines 24 are respectively located on the left and right sides of each of the wiring segments 211.

In this embodiment, the liquid crystal display panel has opposite first and second sides, and a third side connecting the first side and the second side, and the source driver 20 is disposed in the first side. On one side, a pixel repairing line 25 is drawn from the first side and disposed around the third side until extending to the second side, facilitating disconnection of the pixel segment 212 of the data line. Make a repair.

When a certain data line 21 is detected to be disconnected, different repair steps are performed according to the specific position where the disconnection occurs. When the data line 21 is disconnected at the E (ie, the wiring segment 211), the following steps may be taken. Repair:

(1) The first floating line 22 and the wiring section 211 of the disconnected data line 21 are made conductive, that is, an electrical connection is made. The first suspension line 22 and the wiring section 211 of the data line 21 can be removed by the laser welding to remove the insulating layer between the two, so that the two are turned on, as shown in FIG. 2 and Figure 3 are shown.

(2) The first suspension line 22 and the wiring repair line 24 are made conductive, that is, an electrical connection is made. The first suspension line 22 and the wiring repair line 24 can be removed by laser welding to remove the insulating layer between the two at the overlapping position (ie, the B1 position in FIG. 4), so that the two are turned on, as shown in the figure. 1, Figure 2 and Figure 4.

(3) The wiring repair line 24 is electrically connected to the second floating line 23, that is, an electrical connection is made. The wiring between the wiring repair line 24 and the second floating line 23 at the overlapping position C of the two can be removed by laser welding to turn on the two, as shown in FIG. 1, FIG. 2 and FIG. Shown.

(4) The second floating line 23 and the wiring section 211 of the disconnected data line 21 are made conductive, that is, an electrical connection is made. The second floating line 23 and the wiring section 211 of the data line 21 can be removed by the laser welding to remove the insulating layer between the two, so that the two are turned on, as shown in FIG. 2 and Figure 6.

After the above repair, the data signal input from the source driver 20 is sequentially transmitted to the wiring section 211 of the front end, the first floating line 22, the wiring repairing line 24, the second floating line 23, and the wiring section 211 at the rear end. The pixel segment 212 repairs the broken line of the data line 21 at the E position. At this time, the overlapping position between the wiring repair line 24 and the pixel repairing line 25 (i.e., the position B2 in FIG. 4) remains in an insulated isolation state.

When the data line 21 is disconnected at F (ie, the pixel segment 212), it can be repaired by the following steps:

(2) The first suspension line 22 and the wiring repair line 24 are made conductive, that is, an electrical connection is made. The first suspension line 22 and the wiring repair line 24 can be removed by laser welding to remove the insulating layer between the two at the overlapping position (ie, the B1 position in FIG. 4), so that the two are turned on, as shown in the figure. 1, Figure 2 and Figure 4 Shown.

(3) The wiring repair line 24 is electrically connected to the pixel repairing line 25, that is, an electrical connection is made. The wiring between the wiring repair line 24 and the pixel repairing line 25 at the overlapping position of the two (ie, the position B2 in FIG. 4) can be removed by laser welding, so that the two are turned on, as shown in FIG. Figure 2 and Figure 4.

(4) The pixel repair line 25 is made conductive with the pixel segment 212 of the data line 21 where the disconnection occurs, that is, an electrical connection is made. The pixel repair line 25 and the pixel segment 212 of the data line 21 can be removed by the laser welding to remove the insulating layer between the two, so that the two are turned on, as shown in FIG. 1 and FIG. Figure 6 shows.

After the above repair, the data signal input from the source driver 20 is transmitted to the front portion of the F position of the pixel segment 212 through the wiring segment 211, and the data signal also sequentially passes through the wiring segment 211 of the front end and the first floating line 22 The wiring repair line 24 and the pixel repair line 25 are transferred to the rear portion of the F position of the pixel segment 212, so that the disconnection of the data line 21 at the F position is repaired. At this time, the overlapping position C between the wiring repair line 24 and the second floating line 23 and the overlapping position D between the second floating line 23 and the wiring section 211 can be kept in an insulated isolation state.

When the data line 21 is disconnected at both E and F, it can be repaired by the following steps:

(4) forming the second floating line 23 and the wiring section 211 of the disconnected data line 21 to be turned on, That is, an electrical connection is made. The second floating line 23 and the wiring section 211 of the data line 21 can be removed by the laser welding to remove the insulating layer between the two, so that the two are turned on, as shown in FIG. 2 and Figure 6.

(5) The wiring repair line 24 is electrically connected to the pixel repairing line 25, that is, an electrical connection is made. The wiring between the wiring repair line 24 and the pixel repairing line 25 at the overlapping position of the two (ie, the position B2 in FIG. 4) can be removed by laser welding, so that the two are turned on, as shown in FIG. Figure 2 and Figure 4.

(6) The pixel repair line 25 is made conductive with the pixel segment 212 of the data line 21 where the disconnection occurs, that is, an electrical connection is made. The pixel repair line 25 and the pixel segment 212 of the data line 21 can be removed by the laser welding to remove the insulating layer between the two, so that the two are turned on, as shown in FIG. 1 and FIG. Figure 6 shows.

After the above repair, the data signal input from the source driver 20 is sequentially transmitted to the wiring section 211 of the front end, the first floating line 22, the wiring repairing line 24, the second floating line 23, and the wiring section 211 at the rear end. The front portion of the F position of the pixel segment 212, while the data signal is sequentially transmitted to the rear portion of the F position of the pixel segment 212 through the wiring segment 211 of the front end, the first floating line 22, the wiring repair line 24, and the pixel repair line 25. Therefore, the disconnection of the data line 21 at the E and F positions is repaired.

The line repairing structure proposed in this embodiment can repair the disconnection of the display area and repair the disconnection of the wiring area, thereby solving the problem that the display area is disconnected and the wiring area is broken at the same time on the data line. Line repair problem.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Industrial applicability

The liquid crystal display panel and the repairing method thereof provided by the embodiments of the invention can repair the disconnection of the display area and repair the disconnection of the wiring area, thereby solving the simultaneous occurrence of the disconnection of the display area and the disconnection of the wiring area on the data line. Broken wire repair problem in line condition.

Claims

A liquid crystal display panel (100) having a display area (101) and a non-display area (102) located outside the display area (101), wherein the liquid crystal display panel (100) comprises:

Source driver (20);

A plurality of data lines (21) connected to the source driver (20), each of the data lines including a wiring segment (211) located in the non-display area (102) and a pixel segment (212) located in the display area (101) );

a first suspension line (22) staggered across one end of each of the wiring segments (211);

a second floating line (23) staggered across the other end of each of the wiring segments (211);

a wiring repair line (24) having two ends overlapping the first suspension line (22) and the second suspension line (23);

a pixel repairing line (25) having one end overlapping the wiring repairing line (24) and the other end overlapping each pixel segment (212);

Wherein, each suspension line (22, 23) is insulated from each wiring section (211), and each suspension line (22, 23) is insulated from the wiring repairing line (24), and the wiring repairing line (24) is insulated from the pixel repair line (25), and the pixel repair line (25) is insulated from each pixel segment (212).
The liquid crystal display panel according to claim 1, wherein each of the floating lines (22, 23) and the respective wiring segments (211) are located at different layers and the two are provided with an insulating layer at the overlap.
The liquid crystal display panel according to claim 1, wherein each of the floating lines (22, 23) and the wiring repairing line (24) are located at different layers and the two are provided with an insulating layer at the overlap.
A liquid crystal display panel according to claim 1, wherein said wiring repair line (24) and said pixel repairing line (25) are located in different layers and are provided with an insulating layer at the overlap.
The liquid crystal display panel according to claim 1, wherein the pixel repairing line (25) is located at a different layer from each pixel segment (212) and the two are provided with an insulating layer at the overlap.
The liquid crystal display panel according to claim 1, wherein the first floating line (22), the second floating line (23) and the pixel repairing line (25) are located in the same layer, each of which is provided The line segment (211), each pixel segment (212), and the wiring repair line (24) are located in the same layer.
[Correct according to Rule 91 03.02.2017]
The liquid crystal display panel according to claim 8, wherein the two wiring repair lines (24) are respectively located on both sides of each of the wiring segments (211).
[Correct according to Rule 91 03.02.2017]
The liquid crystal display panel according to claim 7, wherein said first floating line (22), said second floating line (23), said wiring repairing line (24), and said pixel repairing line (25) Each has two to form two sets of repair lines.
[Correct according to Rule 91 03.02.2017]
The liquid crystal display panel according to claim 1, wherein the first floating line (22), the second floating line (23), the wiring repairing line (24), and the pixel repairing line (25) are both located in the non-display area (102).
[Correct according to Rule 91 03.02.2017]
The liquid crystal display panel according to claim 7, wherein the liquid crystal display panel has opposite first and second sides and a third side connecting the first side and the second side a side, the source driver (20) is disposed on the first side, the pixel repairing line (25) is drawn from the first side and disposed around the third side until extending to On the second side.
[Correct according to Rule 91 03.02.2017]

A method for repairing a liquid crystal display panel, wherein the liquid crystal display panel according to any one of claims 1 to 10 is repaired when a data line is broken, wherein the repairing method comprises the steps of:

The wiring section (211) of the disconnected data line is electrically connected to the first floating line (22);

Electrically connecting the first suspension line (22) to the wiring repair line (24);

The wiring repair line (24) is kept in an isolated state from the pixel repair line (25) or the wiring repair line (24) is electrically connected to the pixel repair line (25) according to the specific position at which the disconnection occurs.
[Correct according to Rule 91 03.02.2017]
The method for repairing a liquid crystal display panel according to claim 11, wherein when the disconnection occurs on the wiring segment (211) of the data line, the wiring repairing line (24) and the pixel repairing line (25) are held. In an insulated state, the wiring repair line (24) is electrically connected to the second floating line (23), and the second floating line (23) is electrically connected to the wiring section (211) of the broken data line. connection.
[Correct according to Rule 91 03.02.2017]
The method for repairing a liquid crystal display panel according to claim 11, wherein when the disconnection occurs on the pixel segment (212) of the data line, the wiring repair line (24) and the pixel repair line (25) are formed. Electrically connecting, and electrically connecting the pixel repair line (25) to the pixel segment (212) of the disconnected data line.
[Correct according to Rule 91 03.02.2017]
The method for repairing a liquid crystal display panel according to claim 11, wherein when the disconnection occurs simultaneously on the wiring segment (211) and the pixel segment (212) of the data line, the wiring repair line (24) Forming an electrical connection with the second floating line (23), electrically connecting the second floating line (23) with the wiring section (211) of the disconnected data line, and the wiring repairing line (24) and the pixel repairing line (25) forming an electrical connection and electrically connecting the pixel repair line (25) to the pixel segment (212) of the disconnected data line.
[Correct according to Rule 91 03.02.2017]
The method for repairing a liquid crystal display panel according to any one of claims 11 to 14, wherein the manner of forming the electrical connection is laser welding.