CN112882297A

CN112882297A - Liquid crystal panel and liquid crystal panel repairing method

Info

Publication number: CN112882297A
Application number: CN202110223841.9A
Authority: CN
Inventors: 熊子尧; 赵敏; 余思慧
Original assignee: HKC Co Ltd; Chuzhou HKC Optoelectronics Technology Co Ltd
Current assignee: HKC Co Ltd; Chuzhou HKC Optoelectronics Technology Co Ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-06-01

Abstract

The application provides a liquid crystal panel and a liquid crystal panel repairing method; the liquid crystal panel repairing method comprises the following steps: detecting the TFT array plate; cutting off two ends of a problem signal line in the dead pixel area; manufacturing a bypass line to bypass the problem signal line; manufacturing a protective layer to cover the dead pixel area; manufacturing a gap column and an alignment layer; and arranging liquid crystal on the TFT array plate, and aligning and assembling the TFT array plate and the color filter to obtain the liquid crystal panel. When the defective pixel area is repaired, two ends of the problem signal line are cut off, and then the bypass line is arranged on the defective pixel area, so that line repair is realized, the process is simplified, the adjacent pixel area is not occupied, the influence of the bypass line on the adjacent pixel area can be avoided, and the repair success rate is improved; the protective layer covering the dead pixel area is arranged, so that the damage to the bypass line and the notch on the problem signal line is avoided when the gap column is manufactured, and the repair success rate is improved.

Description

Liquid crystal panel and liquid crystal panel repairing method

Technical Field

The present application relates to a liquid crystal display, and more particularly, to a liquid crystal display and a method for repairing the same.

Background

The liquid crystal panel generally includes a Thin Film Transistor (TFT) array plate and a Color Filter (CF) disposed on the TFT array plate, and liquid crystal is filled between the TFT array plate and the Color Filter. In order to ensure the gap between the TFT array plate and the color filter is filled with liquid crystal, before the TFT array plate and the color filter are assembled in alignment, a gap pillar (hereinafter referred to as "PS") is usually disposed on the TFT array plate or the color filter. The TFT array plate is divided by a plurality of data lines and scanning lines which are staggered horizontally and vertically to form a plurality of pixel regions which are arranged in an array. In the process of manufacturing the TFT array panel, signal lines such as data lines, common electrode lines, and scan lines in some pixel regions often have short-circuit or open-circuit problems, so that a dead pixel region is formed. In order to ensure normal conduction of signal lines such as data lines, scanning lines and common electrode lines on the TFT array panel and avoid formation of normally bright spots in a defective pixel area, problem signal lines in the defective pixel area need to be repaired. The current repair method is: and cutting off the electrical connection between two ends of the problem signal line and the pixel electrode and the thin film transistor in the defective pixel area, manufacturing a bypass line on the adjacent pixel area by a long-line process to bypass the problem signal line, and welding and connecting a plurality of points on the pixel electrode and a common electrode line to ensure that the pixel electrode and the common electrode line are at the same potential so as to ensure that the defective pixel area is blackened and a line corresponding to the problem signal line is conducted.

However, the repair method is complex in process; especially, the requirements for resolution and aperture ratio of the current liquid crystal panel are higher and higher, so that the line width of the signal lines in the pixel region on the TFT array panel is smaller and smaller, and the gaps between the signal lines and the pixel electrodes are smaller and smaller, resulting in a higher probability of failure in repair. Especially, for the liquid crystal panel with the gap column arranged on the TFT array plate, when the gap column is manufactured, each repaired cut and bypass line can be influenced, and the repair failure is more easily caused.

Disclosure of Invention

An object of the embodiments of the present application is to provide a liquid crystal panel and a method for repairing the liquid crystal panel, so as to solve the problems that in the prior art, a gap pillar is disposed on a liquid crystal panel on a TFT array board, a repairing process of a defective pixel region of the liquid crystal panel is complicated, and a repaired notch and a bypass line are affected when the gap pillar is manufactured, so that a repairing failure rate is high.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the method for repairing the liquid crystal panel comprises the following steps:

and (3) detection: detecting the TFT array plate to determine a problem signal line in the dead pixel area;

breaking the wire: cutting off both ends of the problem signal line in the dead pixel region;

and (3) long line: manufacturing a bypass line on the dead pixel area to bypass the problem signal line;

preparing a protective layer: manufacturing a protective layer on the dead pixel area, and enabling the protective layer to cover the dead pixel area;

manufacturing a gap column: manufacturing a gap column on the TFT array plate;

preparing an alignment layer: manufacturing an alignment layer on the TFT array plate;

assembling: and arranging liquid crystal on the TFT array plate, and aligning and assembling the liquid crystal with the color filter to obtain the liquid crystal panel.

The protective layer is a light-blocking layer.

In an optional embodiment, the light-blocking layer is a black ink layer.

In an optional embodiment, the step of disconnecting further comprises cutting off the connection between the pixel electrode of the dead pixel region and the corresponding thin film transistor.

In an optional embodiment, between the step of preparing an alignment layer and the step of assembling, further comprising:

blackening: and shading treatment is carried out on the TFT array plate or/and the color filter at the corresponding position of the dead pixel area.

In an alternative embodiment, the shading process in the blackening step includes:

carbonizing: irradiating the position corresponding to the dead pixel region on the alignment layer of the TFT array plate with laser to carbonize the alignment layer in the position region.

In an alternative embodiment, the laser used in the carbonization step is an ultraviolet laser.

and (3) blackening: and arranging a light shielding layer on the alignment layer of the TFT array plate at a position corresponding to the dead pixel region, or/and arranging a light shielding layer on the color filter at a position corresponding to the dead pixel region.

blackening: and irradiating the position, corresponding to the dead pixel area, on the alignment film on the color filter by using laser to ensure that the alignment film in the position area is carbonized and blackened.

Another object of the embodiments of the present application is to provide a liquid crystal panel, which is repaired and manufactured by the method for repairing a liquid crystal panel according to any of the above embodiments.

The liquid crystal panel and the liquid crystal panel repairing method provided by the embodiment of the application have the beneficial effects that: compared with the prior art, when the defective pixel area is repaired, two ends of a problem signal line are cut off, a bypass line is arranged on the defective pixel area to bypass the problem signal line, so that line repair is realized, the process is simplified, the adjacent pixel area cannot be occupied, the influence of the bypass line on the adjacent pixel area can be avoided, and the repair success rate is improved; and then, a protective layer covering the dead pixel area is arranged on the TFT array plate, so that the damage to the bypass line and the notch on the problem signal line when the gap column is manufactured is avoided, the repair success rate is improved, and the quality of the repaired liquid crystal panel is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a dead pixel region of a liquid crystal panel according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram showing a structure of the defective pixel region of FIG. 1 after both ends of the defective signal line are cut;

FIG. 3 is a schematic diagram of a structure after a bypass line is formed on the dead pixel region shown in FIG. 2;

FIG. 4 is a schematic structural diagram of the bad pixel region shown in FIG. 3 after a passivation layer is formed thereon;

fig. 5 is a schematic cross-sectional structural diagram of a liquid crystal panel according to an embodiment of the present application;

fig. 6 is a flowchart of a method for repairing a liquid crystal panel according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a dead pixel region provided in the second embodiment of the present application after a protection layer is formed thereon;

fig. 8 is a schematic structural diagram of a dead pixel region provided in the third embodiment of the present application after a protection layer is formed thereon;

fig. 9 is a flowchart of a liquid crystal panel repairing method according to a fourth embodiment of the present application;

fig. 10 is a flowchart illustrating a blackening step in a liquid crystal panel repairing method according to a fifth embodiment of the present application;

fig. 11 is a schematic view illustrating a carbonization process in a repairing method of a liquid crystal panel according to a fifth embodiment of the present application;

fig. 12 is a schematic cross-sectional structure view of a liquid crystal panel manufactured by a liquid crystal panel repairing method according to a fifth embodiment of the present application;

fig. 13 is a flowchart illustrating a blackening step in a repairing method of a liquid crystal panel according to a sixth embodiment of the present application;

fig. 14 is a schematic cross-sectional structural view of a first liquid crystal panel manufactured by a liquid crystal panel repairing method according to a sixth embodiment of the present application;

fig. 15 is a schematic cross-sectional structural view of a second liquid crystal panel manufactured by a liquid crystal panel repairing method according to a sixth embodiment of the present application;

fig. 16 is a schematic cross-sectional structure view of a third liquid crystal panel manufactured by a liquid crystal panel repairing method according to a sixth embodiment of the present application;

fig. 17 is a flowchart illustrating a blackening step in a repairing method of a liquid crystal panel according to a seventh embodiment of the present application;

fig. 18 is a schematic cross-sectional structure view of a first liquid crystal panel manufactured by a liquid crystal panel repairing method according to a seventh embodiment of the present application;

fig. 19 is a schematic cross-sectional structural view of a second liquid crystal panel manufactured by a liquid crystal panel repairing method according to a seventh embodiment of the present application;

fig. 20 is a flowchart illustrating a blackening step in a liquid crystal panel repairing method according to an eighth embodiment of the present application;

fig. 21 is a schematic cross-sectional structure view of a liquid crystal panel manufactured by the liquid crystal panel repairing method according to the eighth embodiment of the present application;

fig. 22 is a flowchart illustrating a blackening step in a repairing method of a liquid crystal panel according to a ninth embodiment of the present application;

fig. 23 is a schematic cross-sectional structure view of a liquid crystal panel manufactured by the liquid crystal panel repairing method according to the ninth embodiment of the present application;

fig. 24 is a flowchart illustrating a blackening step in a repairing method of a liquid crystal panel according to a tenth embodiment of the present application;

fig. 25 is a schematic cross-sectional structure view of a liquid crystal panel manufactured by a liquid crystal panel repairing method according to a tenth embodiment of the present application;

fig. 26 is a flowchart illustrating a blackening step in a repairing method of a liquid crystal panel according to an eleventh embodiment of the present application;

fig. 27 is a schematic cross-sectional structure diagram of a liquid crystal panel manufactured by a liquid crystal panel repairing method according to an eleventh embodiment of the present application.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-a liquid crystal panel;

10-a TFT array panel; 101-pixel area; 11-a substrate; 12-a signal line; 120-problem signal line; 121-scan line; 122-common electrode lines; 123-data line; 13-a thin film transistor; 14-pixel electrodes; 151-incision; 152-cutting off; 16-a bypass line; 17-a protective layer; 18-a gap post; 19-an alignment layer; 191-a carbonised alignment zone; 110-a light-shielding layer;

20-a color filter; 21-an alignment film; 211-blackened alignment zone.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise. In the description of the present application, it is to be understood that the terms "width," "thickness," "upper," "lower," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 to 6, fig. 1 to 4 are schematic structural diagrams illustrating a repairing process of a dead pixel region 101 of a liquid crystal panel 100. Fig. 5 is a schematic cross-sectional view of an lcd panel 100 manufactured by the lcd panel repairing method of the present embodiment, wherein the cross-sectional line of the schematic cross-sectional view is parallel to the problem signal line 120. Fig. 6 shows a flowchart of the liquid crystal panel repairing method of the present embodiment.

Referring to fig. 1 and 5, the liquid crystal panel 100 generally includes a TFT array panel 10, a color filter 20, and liquid crystal disposed between the color filter 20 and the TFT array panel 10. The TFT array panel 10 includes a substrate 11, and a plurality of data lines 123 and scan lines 121 transversely and longitudinally staggered on the substrate 11 to divide and form a plurality of pixel regions arranged in an array. A thin film transistor 13(TFT) and a pixel electrode 14 are provided in each pixel region, a gate electrode of the thin film transistor 13 is connected to the scan line 121, and a source electrode and a drain electrode of the thin film transistor 13 are connected to the pixel electrode 14 and the data line 123, respectively. A common electrode line 122 is further disposed on the substrate 11 to provide a common potential; and the overlapping part of the pixel electrode 14 and the common electrode line 122 forms a storage capacitor. The common electrode lines 122, the data lines 123, and the scan lines 121 are all signal lines 12 of the TFT array panel 10. Of course, for some TFT array panels 10, the pixel electrode 14 may also be overlapped with the adjacent scanning line 121, so that the adjacent scanning line 121 and the pixel electrode 14 cooperate to form a storage capacitor. The TFT array panel 10 is provided with gap pillars 18, and when the TFT array panel 10 is assembled with the color filter 20, the gap pillars 18 support the color filter 20, so that a gap is formed between the TFT array panel 10 and the color filter 20 to fill liquid crystal. An alignment layer 19 is provided on the TFT array panel 10, and an alignment film 21 is provided on the color filter 20 to align the liquid crystal.

Referring to fig. 1 and fig. 6, a method for repairing a liquid crystal panel according to the present application will now be described. The liquid crystal panel repairing method comprises the following steps:

detection S1: inspecting the TFT array panel 10 to determine a problem signal line 120 in the dead pixel region 101;

disconnection S2: both ends of the problem signal line 120 in the dead pixel region 101 are cut off;

long line S3: fabricating a bypass line 16 on the dead pixel region 101 to bypass the defective signal line 120;

preparing a protective layer S4: manufacturing a protective layer 17 on the dead pixel region 101, and enabling the protective layer 17 to cover the dead pixel region 101;

gap-making column S5: forming a gap post 18 on the TFT array panel 10;

preparing an alignment layer S6: manufacturing an alignment layer 19 on the TFT array panel 10;

assembling S8: the liquid crystal is disposed on the TFT array panel 10, and then aligned with the color filter 20 to obtain the liquid crystal panel 100.

Referring to fig. 1, by the step of detecting S1, a defective pixel region 101 on the TFT array panel 10 can be detected, and the corresponding problem signal line 120 on the defective pixel region 101 can be determined. As in the present embodiment, the problem signal line 120 is the data line 123 of the dead pixel region 101. In this embodiment, the data line 123 is short-circuited with the pixel electrode 14. Of course, in other embodiments, the data line 123 may also be an open circuit problem.

Referring to fig. 2, after the problem signal line 120 of the dead pixel region 101 is determined, a line breaking step S2 is performed to cut the problem signal line 120 at two ends of the dead pixel region 101, such as two notches 151 formed when the two ends of the problem signal line 120 are cut in fig. 2. The two ends of the problem signal line 120 are cut off to avoid the problem signal line 120 from influencing the dead pixel area 101, and the dead pixel area 101 is isolated on the circuit, so that the dead pixel area 101 forms a dark spot, and the dead pixel area 101 forms a normal bright spot.

Referring to fig. 3, after the step of wire disconnection S2, a step of long wire S3 is performed, that is, a long wire process is performed to fabricate a bypass line 16 on the defective pixel region 101 to bypass the defective signal line 120, so that the signal line 12 corresponding to the defective signal line 120 on the entire TFT array panel 10 can be normally turned on to prevent the defective signal line 120 from affecting other pixel regions, thereby ensuring that other pixel regions can normally operate, simplifying the process and increasing the repair success rate.

Referring to fig. 4, after the long line S3 step, a step of forming a passivation layer S4 is performed to form a passivation layer 17 on the dead pixel region 101, and the passivation layer 17 covers the dead pixel region 101, so that the passivation layer 17 protects the dead pixel region 101 and prevents subsequent processes from affecting the notch 151 on the bypass line 16 and the problem signal line 120 formed in the long line S3 step, such as preventing the notch 151 on the bypass line 16 and the problem signal line 120 from being corroded when forming the gap pillar 18; in addition, the bypass line 16 can be prevented from being connected with the pixel electrode 14 of the dead pixel area 101, the influence of the bypass line 16 on the pixel electrode 14 is avoided, and the dead pixel area 101 is prevented from forming a normal bright point. Compared with the scheme of manufacturing the bypass line 16 in the adjacent pixel area in the related art, the aperture opening ratio can be improved, the bypass line 16 is prevented from influencing the adjacent pixel area, and the modification success rate is improved.

Referring to fig. 5 and 6, after the passivation layer 17 is formed on the TFT array panel 10, a step of forming the spacer S5 is performed to form the spacer 18 on the TFT array panel 10 so as to support the color filter 20 when the color filter 20 is assembled. Then, an alignment layer S6 manufacturing step is performed to manufacture an alignment layer 19 on the TFT array panel 10 in order to align the liquid crystal. Thereafter, the step S8 is performed to provide a frame and a liquid crystal on the TFT array panel 10, and then the liquid crystal panel 100 is assembled with the color filter 20.

Compared with the prior art, the method for repairing the liquid crystal panel has the advantages that when the dead pixel region 101 is repaired, two ends of the problem signal line 120 are cut off, the bypass line 16 is arranged on the dead pixel region 101 to bypass the problem signal line 120, so that line repairing is realized, the process is simplified, the adjacent pixel region cannot be occupied, the influence of the bypass line 16 on the adjacent pixel region can be avoided, and the repairing success rate is improved; then, the protective layer 17 covering the defective pixel region 101 is disposed on the TFT array panel 10, so as to prevent the side-line 16 and the notch 151 on the defective signal line 120 from being damaged when the gap pillar 18 is fabricated, thereby improving the success rate of repairing and ensuring the quality of the repaired liquid crystal panel 100.

In an embodiment, referring to fig. 4 and fig. 5, the protection layer 17 may be a light blocking layer, so as to block light from passing through the dead pixel region 101, so that the dead pixel region 101 forms a dark spot, thereby improving the repair success rate.

In one embodiment, the light blocking layer may be a black ink layer to block light from passing through the dead pixel region 101. In other embodiments, the light blocking layer may be made of other opaque materials.

In one embodiment, in the wire breaking S2 step, laser etching may be used to cut off both ends of the problem signal line 120. By using laser etching, the size and the depth of the cut 151 can be conveniently controlled, and the repairing quality and the success rate are better ensured.

In one embodiment, in the step of forming the spacer S5, the spacer 18 may be formed on the TFT array plate 10 by a developing and exposing process, so as to control the density, size and height of the spacer S5.

Referring to fig. 7, fig. 7 is a schematic structural diagram illustrating a structure of a dead pixel region 101 after a protection layer 17 is formed thereon according to an embodiment. In this embodiment, the problem signal line 120 in the defective pixel region 101 is a common electrode line 122, and the common electrode line 122 is short-circuited with the adjacent scan line 121, so that notches 151 are formed at two ends of the common electrode line 122 to cut off the two ends of the common electrode line 122, a bypass line 16 is formed to bypass the common electrode line 122, and a protective layer 17 is formed to cover the defective pixel region 101. Of course, in some embodiments, when the scan line 121 has a short circuit, an open circuit, or the like, the problem signal line 120 may also be the scan line 121.

Referring to fig. 8, fig. 8 is a schematic structural diagram illustrating a structure of a dead pixel region 101 after a protection layer 17 is formed thereon according to an embodiment. In this embodiment, a cut-off 152 is disposed between the pixel electrode 14 and the thin film transistor 13 of the defective pixel region 101, so as to electrically disconnect the pixel electrode 14 and the thin film transistor 13, thereby preventing the thin film transistor 13 from affecting the pixel electrode 14, making the pixel electrode 14 unable to control the movement of the liquid crystal, and further making the defective pixel region 101 form a dark spot, thereby increasing the success rate of repairing. At the time of repair, the electrical connection between the pixel electrode 14 and the thin film transistor 13 may be cut off before the step of the protective layer S4 is formed.

In one embodiment, since both ends of the problem signal line 120 need to be cut off in the wire breaking S2 step, the step of cutting off the electrical connection between the pixel electrode 14 and the thin film transistor 13 may be performed in the wire breaking S2 step for convenience of operation, i.e., the wire breaking S2 step further includes cutting off the connection between the pixel electrode 14 of the dead pixel region 101 and the corresponding thin film transistor 13.

Referring to fig. 9, fig. 9 is a flowchart illustrating a method for repairing a liquid crystal panel according to an embodiment. In this embodiment, the steps between the step of fabricating the alignment layer S6 and the step of assembling S8 further include:

blackening S7: on the TFT array panel 10 and/or the color filter 20, light shielding processing is performed at a position corresponding to the defective pixel region 101.

In the step of blackening S7, light shielding processing is performed at a position corresponding to the dead pixel region 101, for example, light shielding processing may be performed at a position corresponding to the dead pixel region 101 on the TFT array panel 10, light shielding processing may be performed at a position corresponding to the dead pixel region 101 on the color filter 20, and light shielding processing is performed at positions corresponding to the dead pixel region 101 on both the TFT array panel 10 and the color filter 20, so that light cannot penetrate through the dead pixel region 101, and the dead pixel region 101 forms a dark spot, thereby improving the repair success rate.

Referring to fig. 10 to 12, fig. 10 is a flowchart illustrating a blackening step S7 in a liquid crystal panel repairing method according to an embodiment. Fig. 11 is a schematic view showing a carbonization process in the liquid crystal panel repairing method of the present embodiment; fig. 12 is a schematic cross-sectional structural diagram of the liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment. In this embodiment, the light shielding process in the blackening step S7 includes:

carbonization S71: the alignment layer 19 of the TFT array panel 10 is carbonized at a position corresponding to the defective pixel region 101 by irradiating the alignment layer 19 with laser light.

Through the carbonization S71 step, the alignment layer 19 on the dead pixel region 101 is irradiated with laser light to carbonize the alignment layer 19 on the dead pixel region 101 and make it opaque, so that the alignment layer 19 at the position forms a carbonized alignment region 191, thereby preventing light from passing through the carbonized alignment region 191 to form a dark spot on the dead pixel region 101, and further improving the success rate of repair.

In one embodiment, the laser used in the step of carbonizing S71 may be an ultraviolet laser, and it may be better to carbonize the molecular broken bonds in the alignment layer 19, for example, 355nm ultraviolet laser, 360nm ultraviolet laser, 350nm ultraviolet laser, etc. may be used. Of course, it will be understood that other laser sources that can break the molecules in the alignment layer 19 are possible.

Referring to fig. 13 to 16, fig. 13 is a flowchart illustrating a blackening step S7 in a liquid crystal panel repairing method according to an embodiment. Fig. 14 is a schematic cross-sectional structural diagram of a first liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment. Fig. 15 is a schematic cross-sectional structural view of a second liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment. Fig. 16 is a schematic cross-sectional structural view of a third liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment.

Referring to fig. 13, in the present embodiment, the shading processing in the blackening step S7 includes:

black coating S73: a light-shielding layer is provided on the alignment layer 19 of the TFT array panel 10 at a position corresponding to the defective pixel region 101, or/and a light-shielding layer is provided on the color filter 20 at a position corresponding to the defective pixel region 101.

Through the step of blackening S73, the light-shielding layer 110 is disposed at a corresponding position on the dead pixel region 101 to prevent light from passing through the dead pixel region 101, so that a dark spot is formed in the dead pixel region 101, thereby improving the success rate of repairing.

Referring to fig. 14, in the present embodiment, the shading processing in the blackening step S7 includes:

black coating S73: a light-shielding layer 110 is provided on the alignment layer 19 of the TFT array panel 10 at a position corresponding to the defective pixel region 101.

A light-shielding layer 110 is disposed on the alignment layer 19 corresponding to the dead pixel region 101 to prevent light from passing through the dead pixel region 101, so that the dead pixel region 101 forms a dark spot, thereby improving the success rate of repairing.

Referring to fig. 15, in the present embodiment, the light shielding process in the blackening step S7 includes:

black coating S73: a light-shielding layer 110 is provided on the color filter 20 at a position corresponding to the dead pixel region 101.

The light shielding layer 110 is disposed on the color filter 20 corresponding to the dead pixel region 101 to prevent light from being transmitted from the dead pixel region 101, so that a dark spot is formed at the position corresponding to the dead pixel region 101, thereby improving the repair success rate.

Referring to fig. 16, in the present embodiment, the light shielding process in the blackening step S7 includes:

black coating S73: a light-shielding layer 110 is provided on the alignment layer 19 of the TFT array panel 10 at a position corresponding to the defective pixel region 101, and a light-shielding layer 110 is provided on the color filter 20 at a position corresponding to the defective pixel region 101.

Therefore, the light shielding layer 110 is arranged on the alignment layer 19 corresponding to the dead pixel region 101, and the light shielding layer 110 is arranged on the color filter 20 corresponding to the dead pixel region 101, so as to better prevent light from transmitting from the corresponding position of the dead pixel region 101, so that dark spots are formed on the corresponding position of the dead pixel region 101, and further improve the repair success rate.

Referring to fig. 17 and 18, fig. 17 is a flowchart illustrating a blackening step S7 in a liquid crystal panel repairing method according to an embodiment. Fig. 18 is a schematic cross-sectional structural view of a first liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment. Fig. 19 is a schematic cross-sectional view of a second liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment.

Referring to fig. 17, in the present embodiment, the light shielding process in the blackening step S7 includes:

carbonization S71: irradiating a position on the alignment layer 19 of the TFT array panel 10 corresponding to the defective pixel region 101 with laser light to carbonize the alignment layer 19 in the position region;

black coating S73: a light-shielding layer 110 is provided on the alignment layer 19 of the TFT array panel 10 at a position corresponding to the defective pixel region 101, or/and a light-shielding layer 110 is provided on the color filter 20 at a position corresponding to the defective pixel region 101.

By the carbonization S71 step, the alignment layer 19 on the defective pixel region 101 is irradiated with laser light to carbonize and opaque the alignment layer 19 on the defective pixel region 101, so that the alignment layer 19 at this position forms a carbonized alignment region 191, and light is prevented from passing through the carbonized alignment region 191. In addition, through the step of blackening S73, the light shielding layer 110 is disposed at a corresponding position on the dead pixel region 101 to prevent light from passing through the dead pixel region 101, so that a dark spot is formed in the dead pixel region 101, thereby improving the success rate of repairing.

Referring to fig. 18, in the present embodiment, the light shielding process in the blackening step S7 includes:

By the carbonization S71 step, the alignment layer 19 on the defective pixel region 101 is irradiated with laser light to carbonize and opaque the alignment layer 19 on the defective pixel region 101, so that the alignment layer 19 at this position forms a carbonized alignment region 191, and light is prevented from passing through the carbonized alignment region 191. Then, a light shielding layer 110 is disposed on the alignment layer 19 corresponding to the dead pixel region 101 to better prevent light from passing through the dead pixel region 101, so that the dead pixel region 101 forms a dark spot, thereby improving the repair success rate.

Referring to fig. 19, in the present embodiment, the light shielding process in the blackening step S7 includes:

By the carbonization S71 step, the alignment layer 19 on the defective pixel region 101 is irradiated with laser light to carbonize and opaque the alignment layer 19 on the defective pixel region 101, so that the alignment layer 19 at this position forms a carbonized alignment region 191, and light is prevented from passing through the carbonized alignment region 191. And a shading layer 110 is arranged on the color filter 20 corresponding to the dead pixel region 101 to prevent light from transmitting from the dead pixel region 101, so that a dark spot is formed at the dead pixel region 101, thereby improving the success rate of repair and improving the efficiency.

In one embodiment, the shading process in the blackening S7 step may include:

The alignment layer 19 on the dead pixel region 101 is irradiated by laser, so that the alignment layer 19 on the dead pixel region 101 is carbonized and opaque, and the carbonized alignment region 191 is formed on the alignment layer 19 at the position, and the light shielding layer 110 is arranged on the alignment layer 19 corresponding to the dead pixel region 101 and the light shielding layer 110 is arranged on the color filter 20 corresponding to the dead pixel region 101, so as to better prevent light from being transmitted from the corresponding position of the dead pixel region 101, so that a dark spot is formed on the corresponding position of the dead pixel region 101, and further improve the success rate of repair.

Referring to fig. 20 and 21, fig. 20 is a flowchart illustrating a blackening step S7 in a liquid crystal panel repairing method according to an embodiment. Fig. 21 is a schematic cross-sectional structural diagram of a liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment. In this embodiment, the light shielding process in the blackening step S7 includes:

blackening S72: the laser is used to irradiate the position of the alignment film 21 on the color filter 20 corresponding to the dead pixel region 101, and the alignment film 21 in the position region is carbonized and blackened.

Through the step of blackening S72, the laser is used to irradiate the position on the alignment film 21 on the color filter 20 corresponding to the defective pixel region 101, so that the defective pixel region 101 is carbonized and opaque corresponding to the position on the alignment film 21, and the alignment film 21 at the position forms the blackened alignment region 211, thereby preventing the light from passing through the blackened alignment region 211, and forming the dark spot on the defective pixel region 101, and further improving the success rate of repair.

In one embodiment, the laser used in the step of blackening S72 may be an ultraviolet laser, and it may be better to carbonize the molecular broken bond in the alignment film 21, for example, 355nm ultraviolet laser, 360nm ultraviolet laser, 350nm ultraviolet laser, or the like may be used. Of course, it is understood that other laser sources capable of breaking the molecular bonds in the alignment film 21 are also possible.

Referring to fig. 22, fig. 22 is a flowchart illustrating a blackening step S7 in a liquid crystal panel repairing method according to an embodiment. Fig. 23 is a schematic cross-sectional structural diagram of a liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment. In this embodiment, the light shielding process in the blackening step S7 includes:

blackening S72: irradiating the position corresponding to the dead pixel region 101 on the alignment film 21 on the color filter 20 with laser to make the alignment film 21 in the position region carbonized and blackened;

By the step of blackening S72, the position on the alignment film 21 on the color filter 20 corresponding to the defective pixel region 101 is irradiated with laser light, so that the defective pixel region 101 is carbonized and opaque corresponding to the position on the alignment film 21, and the alignment film 21 at the position forms a blackened alignment region 211, thereby preventing light from passing through the blackened alignment region 211. In addition, through the step of blackening S73, the light shielding layer 110 is disposed at a corresponding position on the dead pixel region 101 to prevent light from passing through the dead pixel region 101, so that a dark spot is formed in the dead pixel region 101, thereby improving the success rate of repairing.

Referring to fig. 24, fig. 24 is a flowchart illustrating a blackening step S7 in a liquid crystal panel repairing method according to an embodiment. Fig. 25 is a schematic cross-sectional structural diagram of a liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment. In this embodiment, the light shielding process in the blackening step S7 includes:

By the carbonization S71 step, the alignment layer 19 on the defective pixel region 101 is irradiated with laser light to carbonize and opaque the alignment layer 19 on the defective pixel region 101, so that the alignment layer 19 at this position forms a carbonized alignment region 191, and light is prevented from passing through the carbonized alignment region 191. In the step of blackening S72, laser is used to irradiate the position of the alignment film 21 on the color filter 20 corresponding to the defective pixel region 101, so that the defective pixel region 101 is carbonized and opaque corresponding to the position on the alignment film 21, and the alignment film 21 at the position forms a blackened alignment region 211, thereby preventing light from passing through the blackened alignment region 211, preventing light from passing through the defective pixel region 101, and forming a dark spot in the defective pixel region 101, thereby improving the success rate of repair.

Referring to fig. 26, fig. 26 is a flowchart illustrating a blackening step S7 in a liquid crystal panel repairing method according to an embodiment. Fig. 27 is a schematic cross-sectional structural diagram of a liquid crystal panel 100 manufactured by the liquid crystal panel repairing method of the present embodiment. In this embodiment, the light shielding process in the blackening step S7 includes:

By the carbonization S71 step, the alignment layer 19 on the dead pixel region 101 is irradiated with laser light to carbonize the alignment layer 19 on the dead pixel region 101 and make it opaque, so that the alignment layer 19 at that position forms a carbonized alignment region 191, and light is prevented from passing through the carbonized alignment region 191, so as to prevent light from passing through the dead pixel region 101. By the step of blackening S72, the position on the alignment film 21 on the color filter 20 corresponding to the defective pixel region 101 is irradiated with laser light, so that the defective pixel region 101 is carbonized and opaque corresponding to the position on the alignment film 21, and the alignment film 21 at the position forms a blackened alignment region 211, thereby preventing light from passing through the blackened alignment region 211. In addition, through the step of blackening S73, the light shielding layer 110 is disposed at a corresponding position on the dead pixel region 101 to prevent light from passing through the dead pixel region 101, so that a dark spot is formed in the dead pixel region 101, thereby improving the success rate of repairing.

The liquid crystal panel repairing method of the embodiment of the application can simplify the repairing process of the problem signal line 120 of the dead pixel region 101 on the TFT array plate 10, ensure the repairing success rate of the dead pixel region 101, and improve the aperture opening ratio and the quality of the prepared liquid crystal panel 100.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The liquid crystal panel repairing method is characterized by comprising the following steps:

manufacturing a gap column: manufacturing a gap column on the TFT array plate;

2. The method of repairing a liquid crystal panel according to claim 1, wherein: the protective layer is a light-blocking layer.

3. The method of repairing a liquid crystal panel according to claim 2, wherein: the light-blocking layer is a black ink layer.

4. The method for repairing a liquid crystal panel according to any one of claims 1 to 3, wherein: the step of wire breaking further comprises cutting off the connection part of the pixel electrode of the dead pixel area and the corresponding thin film transistor.

5. The method for repairing a liquid crystal panel according to any one of claims 1 to 3, wherein: between the step of preparing alignment layer and the step of assembling, further comprising:

6. The method of repairing a liquid crystal panel according to claim 5, wherein: the shading treatment in the blackening step comprises the following steps:

7. The method of repairing a liquid crystal panel according to claim 6, wherein: the laser used in the carbonization step is an ultraviolet laser.

8. The method of repairing a liquid crystal panel according to claim 5, wherein: the shading treatment in the blackening step comprises the following steps:

9. The method of repairing a liquid crystal panel according to claim 5, wherein: the shading treatment in the blackening step comprises the following steps:

10. A liquid crystal panel, characterized in that: the liquid crystal panel repairing method according to claim 1-9.