CN114035381A

CN114035381A - Color film substrate, display panel, display device and repairing method

Info

Publication number: CN114035381A
Application number: CN202110062489.5A
Authority: CN
Inventors: 齐二龙; 周满城; 谢川龙; 陈柏辅
Original assignee: Chongqing Kangjia Photoelectric Technology Research Institute Co Ltd
Current assignee: Chongqing Kangjia Photoelectric Technology Research Institute Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-02-11
Anticipated expiration: 2041-01-18
Also published as: CN114035381B

Abstract

The invention provides a color film substrate which comprises a common electrode layer. The common electrode layer comprises a plurality of common electrode areas which are arranged in an array and are arranged at intervals, and a conductive connecting section is arranged between every two adjacent common electrode areas; the common electrode layer further comprises a plurality of first connecting lines and a plurality of second connecting lines, each first connecting line is communicated with the plurality of connecting sections along the first direction of the array, and each second connecting line is communicated with the plurality of connecting sections along the second direction of the array. The first connecting line further comprises at least one first extending section, the second connecting line further comprises at least one second extending section, and the first extending section and the second extending section are used for receiving driving signals and transmitting the driving signals to the common electrode regions. When the subsequent brightness of the color film substrate is abnormal, the brightness of each common electrode area can be independently adjusted, and the consistency of the overall brightness is ensured. The application also relates to a display panel comprising the color film substrate, a display device and a repairing method.

Description

Color film substrate, display panel, display device and repairing method

Technical Field

The invention relates to the technical field of display, in particular to a color film substrate, a display panel comprising the color film substrate, a repairing method and a display device comprising the display panel.

Background

Currently, liquid crystal displays have been widely used in terminal display devices of various sizes due to their light weight, small size, and thin thickness. However, the quality of the liquid crystal panel is affected by the brightness unevenness, which has various causes, such as: local film-forming thickness is uneven, so that local luminous flux is uneven, local electric field intensity is uneven, and local brightness is uneven finally; further, local line widths are increased or decreased due to exposure, development, etching, and the like, which causes local voltage drop unevenness and finally local brightness unevenness.

In a Micro-Led backlight lcd, a Light Emitting Diode (Led) is used as a backlight Light source. Because the brightness and the chromaticity of each LED lamp are different, when the LED lamp in a certain area is dark, the brightness on the liquid crystal display screen is also dark. When the LED lamps in a plurality of areas are dark, the main reason for the uneven brightness of the whole Micro-LED backlight liquid crystal display is formed.

Disclosure of Invention

The application aims to overcome the defects in the prior art, and provides a color film substrate, a display panel, a display device and a repairing method, which are used for solving the phenomenon of uneven brightness which is easy to appear on the display panel, and specifically comprise the following technical scheme:

in a first aspect, the application provides a color film substrate, which includes a common electrode layer, where the common electrode layer includes a plurality of common electrode regions arranged at intervals, the plurality of common electrode regions are arranged in an array, and a conducting connection section is arranged between each two adjacent common electrode regions;

the common electrode layer further comprises a plurality of first connecting lines and a plurality of second connecting lines, each first connecting line is communicated with the plurality of connecting sections along the first direction of the array, and each second connecting line is communicated with the plurality of connecting sections along the second direction of the array;

each first connecting line further comprises at least one first extending section, and the first extending section is positioned at the outer side of the common electrode area along the first direction; each second connecting line further comprises at least one second extending section, the second extending section is located outside the common electrode region along the second direction, and the first extending section and the second extending section are used for receiving a driving signal and transmitting the driving signal to the common electrode region through each connecting section which is conducted by the first extending section and the second extending section.

The common electrode layer is arranged into a plurality of common electrode regions which are arranged in an array and are arranged at intervals, and the conducting connecting section is arranged between each two adjacent common electrode regions, so that the electrical conduction between the common electrode regions in the whole common electrode layer is realized; then, the plurality of first connecting lines and the plurality of second connecting lines are arranged in the common electrode layer to be communicated with the connecting sections in an array mode; and at least one first extension section is arranged on each first connecting line, and at least one second extension section is arranged on each second connecting line, so that a driving signal is received and transmitted to the connected common electrode region. According to the design of the color film substrate, the common electrode layer can be divided into the plurality of common electrode regions, when the color film substrate has uneven brightness, the electrical connection between the abnormal brightness region and other normal brightness regions can be conveniently disconnected, and then the brightness of the abnormal brightness region can be independently adjusted.

Optionally, the connecting section further includes a plurality of first connecting sections and a plurality of second connecting sections, the first connecting sections extend along the first direction, the second connecting sections extend along the second direction, each of the first connecting lines is used to communicate the plurality of second connecting sections, and each of the second connecting lines is used to communicate the plurality of first connecting sections.

The plurality of first connecting sections are communicated with each second connecting line, and the plurality of second connecting sections are communicated with each first connecting line, so that all the common electrode areas can be electrically connected.

Optionally, one end of each of the first extending segments and the second extending segments, which faces away from the common electrode region, is provided with a conducting end, and the conducting end is used for receiving a driving signal and transmitting the driving signal to each of the first connecting lines and each of the second connecting lines.

And receiving a driving signal through each of the conductive terminals and transmitting the driving signal to each of the first connection lines and each of the second connection lines, thereby transmitting the driving signal to all of the common electrode regions.

Optionally, the number of the first extending sections on each first connecting line is two, the number of the second extending sections on each second connecting line is also two, and each corresponding first connecting line and each corresponding second connecting line include two conducting ends.

The conducting ends are arranged corresponding to the first connecting lines and the second connecting lines, so that the paths of the common electrode regions for receiving driving signals can be shortened, and the voltage difference between different common electrode regions is reduced.

In a second aspect, the present application provides a display panel, which includes an array substrate, a liquid crystal layer, a control chip, and the color film substrate described above, where the array substrate and the color film substrate are stacked, the liquid crystal layer is located between the array substrate and the color film substrate, and the control chip is located on the array substrate and electrically connected to the color film substrate.

Similar to the color film substrate provided by the first aspect of the present application, the display panel provided by the present application can individually adjust the brightness of an area with abnormal brightness when the display panel has uneven brightness due to the adoption of the color film substrate.

In a third aspect, the present application provides a display device, including a backlight module and the display panel, where the backlight module is located below the array substrate, and a light source of the backlight module includes a micro light emitting diode or a mini light emitting diode.

The application provides a display device passes through backlight unit provides the light source, and the light source shines in order to realize on the display panel display device's display function.

In a fourth aspect, the present application provides a repairing method applied to the display device, including:

determining that at least one target common electrode region exists in the common electrode layer, wherein the target common electrode region is the common electrode region with the brightness not reaching a preset brightness threshold value;

cutting the connection segment connected to the target common electrode region and cutting at least one of the first connection line and/or the second connection line so that the target common electrode region is individually connected to one of the conduction terminals;

and adjusting the driving signal transmitted to the conducting end by the control chip so as to adjust the brightness of the target common electrode area to be within the preset brightness threshold value.

According to the repairing method provided by the application, an independent passage is formed between the target common electrode area and the control chip by determining the target common electrode area and cutting the connecting section and the at least one first connecting line and/or the second connecting line which are communicated with the target common electrode area, and the independent passage is connected with the conducting end. And the control chip can independently adjust the brightness of the target common electrode area through the conducting terminal on the independent path.

Optionally, the adjusting the driving signal transmitted by the control chip to the conducting terminal includes:

and increasing the voltage difference between the target common electrode area and the array substrate. It can be understood that after the brightness of the target common electrode region is judged to be lower than the preset brightness threshold, the voltage difference between the target common electrode region and the array substrate is increased, so that the brightness of the target common electrode region can be increased, and the brightness of the target electrode region reaches the preset brightness threshold.

Optionally, the increasing the voltage difference between the target common electrode region and the array substrate includes:

if the array substrate adopts positive drive, reducing the voltage value of a drive signal of the target common electrode area;

and if the array substrate adopts negative driving, the voltage value of the driving signal of the target common electrode area is increased.

It can be understood that, according to the driving manner of the array substrate, the driving voltage of the target common electrode region is correspondingly adjusted, so that the voltage difference of the target common electrode region can be increased, and further, the brightness of the target common electrode region can reach the preset brightness threshold.

Optionally, the determining that at least one target common electrode region exists in the common electrode layer further includes:

detecting brightness values of the common electrode regions;

calculating to obtain an average brightness value on the color film substrate;

determining whether an absolute value of a ratio of a difference value of the luminance value of the common electrode region and the average luminance value to the luminance value of the common electrode region is greater than a preset threshold value;

and if so, determining the common electrode area as the target common electrode area.

It can be understood that the target common electrode region is determined by detecting the brightness value of each common electrode region and the average brightness value on the color film substrate, so that the brightness of the abnormal brightness region on the color film substrate can be independently adjusted.

Drawings

Fig. 1 is a schematic structural diagram of a display panel disclosed in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a color film substrate disclosed in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a color filter substrate according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a display device disclosed in an embodiment of the present application;

fig. 5 is a schematic flow chart of a repairing method disclosed in the embodiment of the present application;

fig. 6 is a schematic diagram of a corresponding structure formed in step S20 in a repairing method disclosed in an embodiment of the present application;

FIG. 7 is a schematic flow chart diagram illustrating one embodiment of a repair method disclosed in embodiments herein;

FIG. 8 is a schematic flow chart diagram illustrating another embodiment of a repair method disclosed in embodiments herein;

fig. 9 is a schematic voltage waveform of a target common electrode region in a repairing method disclosed in an embodiment of the present application;

fig. 10 is a schematic flow chart of another embodiment of a repairing method disclosed in the embodiment of the present application.

Description of reference numerals:

1-a display panel; 2-a display device; 10-a color film substrate; 20-a liquid crystal layer; 30-an array substrate; 40-a backlight module; 31-a control chip; 100-a common electrode layer; 110-a common electrode area; 111-target common electrode area; 120-a connecting segment; 121 — a first connecting section; 122-a second connection segment; 131-a first connection line; 132-a second connection line; 141-a first extension; 142-a second extension; 150-conducting terminal; 001-first direction; 002-second direction.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

Furthermore, the following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. Directional phrases used in this disclosure, such as, for example, "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Please refer to fig. 1, which illustrates a display panel 1 according to an embodiment of the present application. The display panel 1 is composed of a color film substrate 10, an array substrate 30, and a liquid crystal layer 20 located between the color film substrate 10 and the array substrate 30. The array substrate 30 is provided with a control chip 31, and the control chip 31 is electrically connected to the array substrate 30 and the color film substrate 10 at the same time, so as to realize the display function of the display panel 1. In other embodiments, the control chip 31 may also be fixed on one side of the color filter substrate 10. The color filter substrate 10 is provided with RGB filters (not shown), and a common electrode layer 100 (see fig. 2). A plurality of pixel units (not shown) are disposed on the array substrate 30 corresponding to the RGB filters. Based on the signal input of the control chip 31, a vertical electric field may be formed between the plurality of pixel units on the array substrate 30 and the common electrode layer 100 on the color filter substrate 10, and the vertical electric field may control the liquid crystal layer 20 to rotate. The liquid crystal layer 20 controls the flux of light by rotation, and different fluxes of light can generate light rays with different brightness through the RGB layers on the color film substrate 10, so as to realize the image display function of the display panel 1 of the present application. It can be understood that a plurality of data lines and a plurality of scan lines are disposed on the array substrate 30, and the plurality of data lines and the plurality of scan lines are electrically connected to the control chip 31.

The structure of the color filter substrate 10 is redesigned, specifically, referring to a schematic structural diagram of the common electrode layer 100 shown in fig. 2, the common electrode layer 100 is located on the color filter substrate 10, and the common electrode layer 100 is composed of a plurality of common electrode regions 110, and the plurality of common electrode regions 110 are arranged in an array. Any two adjacent common electrode regions 110 have a gap therebetween, which enables the respective common electrode regions 110 to be independent from each other. As shown in fig. 2, a first direction 001 and a second direction 002 perpendicular to each other are defined as two directions of the array. A conductive connection section 120 is disposed between any two adjacent common electrode regions 110, and the connection section 120 is used to realize electrical conduction between any two adjacent common electrode regions 110. In the present embodiment, the plurality of common electrode regions 110 are fabricated in a rectangular shape. The common electrode region 110 may be disposed corresponding to one RGB filter, or may cover a plurality of RGB filters at the same time. In one embodiment, the color filter substrate 10 is made of Indium Tin Oxide (ITO).

The common electrode layer 100 further includes a plurality of first connection lines 131 and a plurality of second connection lines 132, the plurality of first connection lines 131 are disposed at intervals along a first direction 001, the plurality of second connection lines 132 are disposed at intervals along a second direction 002, and the plurality of first connection lines 131 and the plurality of second connection lines 132 are cross-connected to each other, so that mutual electrical conduction between the plurality of first connection lines 131 and the plurality of second connection lines 132 can be realized. And each first connecting line 131 is still communicated with a plurality of connecting sections 120 along the first direction 001, each second connecting line 132 is still communicated with a plurality of connecting sections 120 along the second direction 002, and the electrical conduction between the connecting sections 120 can be realized through the plurality of first connecting lines 131 and the plurality of second connecting lines 132.

Each of the first connection lines 131 further includes at least one first extension 141 along the first direction 001, and the first extension 141 is located outside the plurality of common electrode regions 110. Each of the second connection lines 132 further includes at least one second extension 142 along the second direction 002, and the second extension 142 is also located outside the plurality of common electrode regions 110. The first extension section 141 and the second extension section 142 are located outside the common electrode layer 100, that is, the first extension section 141 and the second extension section 142 are disposed outside the display region of the color filter substrate 10, so that the first extension section 141 and the second extension section 142 are respectively conducted with the control chip 31. The first extension 141 and the second extension 142 are used for receiving the driving signal and transmitting the driving signal to the first connection line 131 and the second connection line 132, and further transmitting the driving signal to the plurality of common electrode regions 110 through the plurality of connection segments 120 to electrically conduct the plurality of common electrode regions 110.

In an embodiment, when the array substrate 30 and the color filter substrate 10 are stacked, each common electrode region 110 on the color filter substrate 10 corresponds to a display region on the array substrate 30. At this time, the first and

second connection lines

131 and 132 and the first and

second extension segments

141 and 142 are aligned with the data lines and the scan lines on the array substrate 30.

In one embodiment, the control chip 31 is respectively communicated with the plurality of conducting terminals 150 to transmit the driving signal to the common electrode layer 100. In this embodiment, the conduction terminal 150 on the color filter substrate 10 may be connected to the plurality of data lines and the plurality of scan lines on the array substrate 30 to realize signal conduction, so as to realize transmission of the driving signal from the array substrate 30 to the color filter substrate 10.

In an embodiment, the plurality of conducting terminals 150 on the color film substrate 10 are connected to the plurality of corresponding data lines and the plurality of corresponding scanning lines through conducting manners such as silver paste dispensing or gold balls, and then connected to the control chip 31 through the plurality of data lines and the plurality of scanning lines, so that signal transmission between the control chip 31 and the color film substrate 10 can be realized.

According to the color film substrate 10, the common electrode layer 100 is provided as a plurality of common electrode regions 110 which are arranged in an array and are arranged at intervals, and the conducting connecting sections 120 are arranged between every two adjacent common electrode regions 110, so that the electrical conduction between the common electrode regions 110 in the whole common electrode layer 100 is realized; then, the present application provides a plurality of first connection lines 131 and a plurality of second connection lines 132 in the common electrode layer 100 to connect the respective connection segments 120 in an array; the driving signal is received and transmitted to the connected common electrode region 110 by providing at least one first extension 141 on each first connection line 131 and at least one second extension 142 on each second connection line 132. According to the design of the color film substrate 10, the common electrode layer 100 can be divided into the plurality of common electrode regions 110, when the color film substrate 10 works normally, the driving signals transmitted through the conducting terminals 150 can be transmitted to the common electrode regions 110 through the first connecting lines 131, the second connecting lines 132 and the connecting sections 120 which are respectively communicated with the first connecting lines and the second connecting lines, so that the common electrode layer 100 is integrally driven; when the color film substrate 10 has uneven brightness, the electrical connection between the abnormal brightness region and other normal brightness regions can be conveniently disconnected, and further, the brightness of the abnormal brightness region can be conveniently adjusted independently. The rest areas continue to realize the transmission function of the driving signals through the lines which are not disconnected.

It can be understood that, similar to the effect of the color filter substrate 10 provided in the first aspect of the present disclosure, the display panel 1 provided in the present disclosure can individually adjust the brightness of the area with abnormal brightness when the color filter substrate 10 is used, and the phenomenon of uneven brightness occurs on the display panel 1.

Referring to fig. 3, the connecting section 120 includes a plurality of first connecting sections 121 and a plurality of second connecting sections 122, wherein the first connecting sections 121 extend along a first direction 001, and the second connecting sections 122 extend along a second direction 002. Each of the first connection lines 131 is used to communicate with a plurality of the second connection segments 122, and each of the second connection lines 132 is used to communicate with a plurality of the first connection segments 121.

Specifically, in the present embodiment, the first connection segment 121 is connected between two adjacent common electrode regions 110 in the first direction 001, and the second connection segment 122 is connected between two adjacent common electrode regions 110 in the second direction 002. And each first connection line 131 is communicated with the plurality of second connection sections 122 along the first direction 001, thereby realizing the electrical connection between each first connection line 131 and the plurality of common electrode regions 110. Each of the second connection lines 132 is connected to the plurality of first connection segments 121 along the second direction 002, so that each of the second connection lines 132 is electrically connected to the plurality of common electrode regions 110. It can be understood that the cooperation between the plurality of first connection lines 131 and the plurality of second connection lines 132 and the plurality of first connection segments 121 and the plurality of second connection segments 122 enables electrical connection to be achieved between all the common electrode regions 110 in the common electrode layer 100 while achieving independent arrangement.

In an embodiment, referring to fig. 3, each of the first extension segments 141 and the second extension segments 142 has a conducting end 150 at an end facing away from the common electrode region 110, and the conducting end 150 is used for communicating with the control chip 31 to receive the driving signal and transmit the driving signal to each of the common electrode regions 110 through the first connecting line 131 and the second connecting line 132, and the plurality of second connecting segments 121 and the first connecting segment 122 which are respectively conducted. The conductive terminal 150 is used to receive a driving signal and transmit the driving signal to each of the first extension 141 and the second extension 142, and further to each of the first connection lines 131 and each of the second connection lines 132, so that the driving signal can be transmitted to the plurality of common electrode regions 110 through the connection section 120 connected between the plurality of common electrode regions 110.

In one embodiment, with reference to fig. 3, the number of the first extending segments 141 on each line is two, the number of the second extending segments 142 on each second connecting line 132 is also two, and each first connecting line 131 and each second connecting line 132 include two conducting terminals 150. In the embodiment, the conducting terminals 150 are disposed at two opposite ends of each of the first connecting lines 131 and each of the second connecting lines 132, so that the conducting terminals 150 can shorten a path of each of the common electrode regions 110 receiving a driving signal, thereby reducing a voltage difference between different common electrode regions 110. That is, the common electrode region 110 located in the common electrode layer 100 may receive a driving signal from one of the conduction terminals 150 closest to the common electrode region 110.

The present application further provides a display device 2, as shown in fig. 4, the display device 2 includes a backlight module 40 and the display panel 1, and the backlight module 40 is located below the array substrate 30 in the display panel 1. It is understood that the backlight module 40 provides a light source for the display panel 1, and the light source of the backlight module 40 includes micro light emitting diodes or mini light emitting diodes. The display device 2 has similar effects to the display panel 1 provided by the present application, and the display device 2 can individually adjust the brightness of the abnormal brightness region when the brightness unevenness occurs.

The present application further relates to a repairing method applied to the display panel 1 or the display device 2, and the embodiment of the present application takes the application to the display panel 1 as an example, and specifically please refer to the flowchart of the repairing method shown in fig. 5, which includes the following steps:

s10, determining that at least one target common electrode region 111 exists in the common electrode layer 100, wherein the target common electrode region 111 is a common electrode region 110 with the brightness not reaching a preset brightness threshold value;

specifically, in the embodiment, when the brightness of the display panel 1 is adjusted, the target common electrode region 111 needs to be determined, and the brightness of the target common electrode region 111 is lower than a preset brightness threshold, or the brightness of the target common electrode region 111 is higher than the preset brightness threshold, that is, the brightness of the target common electrode region 111 is different from the brightness of the other common electrode regions 110. It is understood that the number of the target common electrode regions 111 is more than one.

S20, cutting the connection segment 120 connected to the target common electrode region 111, and cutting at least one of the first connection line 131 and/or the second connection line 132 such that the target common electrode region 111 is individually connected to one of the conduction terminals 150;

specifically, referring to fig. 6, in the present embodiment, after the target common electrode region 111 is determined, an independent path is formed between the target common electrode region 111 and the control chip 31, and a conducting terminal 150 communicating with the target common electrode region 111 needs to be reserved, so that the target common electrode region 111 can be electrically connected to the control chip 31 through the conducting terminal 150. At this time, the target common electrode region 111 is electrically disconnected from the other common electrode regions 110 on the color filter substrate 10 (that is, the target common electrode region 111 is not electrically connected to the other common electrode regions 110). That is, the target common electrode region 111 can receive the driving signal only from the connected conduction terminal 150. Preferably, when the target common electrode region 111 is cut out and the target common electrode region 111 is separately connected to one of the conduction terminals 150, the conduction terminal 150 closer to the target common electrode region 111 is remained. In one embodiment, the target common electrode region 111 is individually cut by laser cutting to form the structure shown in fig. 6.

S30, adjusting the driving signal transmitted by the control chip 31 to the conducting terminal 150 to adjust the brightness of the target common electrode region 111 to be within the preset brightness threshold.

Specifically, in this embodiment, the voltage of the target common electrode region 111 can be independently adjusted by adjusting the control chip 31, so that the brightness of the target common electrode region 111 can be adjusted to be consistent with the brightness of the other common electrode regions 110 on the color filter substrate 10, that is, the brightness of the target common electrode region 111 can be adjusted to be within a preset brightness threshold, and thus, the phenomenon of uneven brightness that is easily generated on the color filter substrate 10 can be solved.

The repair method provided by the present application forms a separate path between the target common electrode region 111 and the control chip 31 by determining the target common electrode region 111 and cutting the connection segment 120 and the at least one first connection line 131 and/or second connection line 132, which are in communication with the target common electrode region 111, and the separate path is connected to a via 150. And the control chip 31 can individually brightness-adjust the target common electrode region 111 through the conduction terminal 150 on the individual path.

Referring to fig. 7, in an embodiment of the present invention, the step S10 "the common electrode region 110 with a brightness not reaching the preset brightness threshold" in the repairing method includes:

s11, the brightness of the target common electrode region 111 is lower than the preset brightness threshold;

then, the step S30 "adjusting the driving signal transmitted from the control chip 31 to the conducting terminal 150" may further include:

s31, increasing the voltage difference between the target common electrode region 111 and the array substrate 30.

Specifically, in this embodiment, when it is determined that the brightness of the target common electrode region 111 is lower than the preset brightness threshold, the voltage difference between the target common electrode region 111 and the array substrate 30 is increased, and the positive driving voltage and the negative driving voltage which can enable the brightness of the target common electrode region 111 to meet the preset brightness threshold are calculated according to the increased voltage difference, so that the brightness of the target common electrode region 111 is changed by changing the positive driving voltage or the negative driving voltage of the target common electrode region 111 through the control chip 31.

In one embodiment, the voltage value δ of the array substrate 30 in the positive driving state and the negative driving state respectively satisfies: delta is more than or equal to 0.2 and less than or equal to 10.2. That is, the voltage difference between the target common electrode region 111 and the array substrate 30 is 5V at the maximum, and the larger the voltage difference is, the larger the luminance of the display panel 1 is. Illustratively, when the voltage difference between the target common electrode region 111 and the array substrate 30 is 5V, the display panel 1 is in the brightest posture.

Referring to fig. 8, for one embodiment, the step S31 "increasing the voltage difference between the target common electrode region 111 and the array substrate 30" includes:

s31a, if the array substrate 30 adopts positive driving, reducing the voltage value of the driving signal of the target common electrode region 111;

s31b, if the array substrate 30 adopts the negative driving, the voltage value of the driving signal of the target common electrode region 111 is increased.

Specifically, in the present embodiment, the array substrate 30 has two driving states of positive driving and negative driving, and the voltage value of the driving signal of the target common electrode region 111 is adjusted by determining whether the array substrate 30 is in the positive driving or the negative driving. So that a voltage difference between the array substrate 30 and the target common electrode region 111 is maintained.

In one embodiment, referring to the waveform diagram shown in fig. 9, as shown in a of fig. 9, the voltage value on the target common electrode region 111 is 5.2V at 130 gray levels. When the array substrate 30 is in the positive driving state, the voltage value on the array substrate 30 is 7.8V, and when the array substrate 30 is in the negative driving state, the voltage value on the array substrate 30 is 2.6V. It can be calculated that, in the present embodiment, the voltage difference between the target common electrode region 111 and the array substrate 30 is 2.6V. For example, as shown in b of fig. 9, the voltage difference between the target common electrode region 111 and the array substrate 30 may be increased to 2.8V, and at this time, the positive driving voltage on the target common electrode region 111 is adjusted to 5.0V, and the negative driving voltage on the target common electrode region 111 is adjusted to 5.4V.

It is to be noted that, after the adjustment of the brightness value of the target common electrode region 111 is completed, the brightness of the target common electrode region 111 needs to be detected again, and if the brightness of the target common electrode region 111 reaches the preset brightness threshold, the adjustment is completed. If the brightness of the target common electrode region 111 does not reach the preset brightness threshold, the voltage difference between the target common electrode region 111 and the array substrate 30 needs to be adjusted again, so as to obtain a new set of positive driving voltage and negative driving voltage of the target common electrode region 111. It can be understood that the adjustment of the brightness of the target common electrode region 111 needs to make the brightness of the target common electrode region 111 reach a preset brightness threshold.

Referring to fig. 10, in an embodiment, the step S10 ″ of the repairing method provided in this application determines that at least one target common electrode region 111' exists in the common electrode layer 100, and further includes:

s10a, detecting brightness values of the respective common electrode regions 110;

s10b, calculating to obtain an average brightness value on the color film substrate 10;

s10c, determining whether an absolute value of a ratio of a difference value between the luminance value of the common electrode region 110 and the average luminance value to the luminance value of the common electrode region 110 is greater than a preset threshold;

s10d, if yes, the common electrode region 110 is determined to be the target common electrode region 111.

Specifically, in this embodiment, by detecting the luminance la (n) of each common electrode region 110 on the color filter substrate 10 and the average luminance L of all the common electrode regions 110 on the color filter substrate 10, according to the luminance ratio calculation formula:

to calculate whether the luminance la (n) of each common electrode region 110 reaches the average luminance L of all the common electrode regions 110. That is, whether the luminance la (n) of each common electrode region 110 reaches a preset luminance threshold value is calculated. If it is

If the result is greater than the preset threshold, it is determined that the brightness of the common electrode region 110 is abnormal, that is, it is determined that the common electrode region 110 is the target common electrode region 111. Understandably, when LA>L, indicating that the brightness of the target common electrode region 111 is brighter, and LA<L, it indicates that the brightness of the target common electrode region 111 is dark. Illustratively, the preset threshold value is 3%. In one embodiment, a CCD camera is used for the color film substrate 10And (4) capturing the brightness value.

The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.

Claims

1. The color film substrate is characterized by comprising a common electrode layer, wherein the common electrode layer comprises a plurality of common electrode regions which are arranged at intervals, the common electrode regions are arranged in an array manner, and a conducting connecting section is arranged between every two adjacent common electrode regions;

2. The color filter substrate according to claim 1, wherein the connection segments further include a plurality of first connection segments and a plurality of second connection segments, the first connection segments extend along the first direction, the second connection segments extend along the second direction, each first connection line is used for communicating with a plurality of the second connection segments, and each second connection line is used for communicating with a plurality of the first connection segments.

3. The color filter substrate of claim 1, wherein one end of each of the first extension segments and the second extension segments, which end faces away from the common electrode region, is provided with a conducting terminal, and the conducting terminal is configured to receive a driving signal and transmit the driving signal to each of the first connection lines and each of the second connection lines.

4. The color filter substrate according to claim 3, wherein the number of the first extending segments on each first connecting line is two, the number of the second extending segments on each second connecting line is also two, and each first connecting line and each second connecting line respectively include two conducting terminals.

5. A display panel, comprising an array substrate, a liquid crystal layer, a control chip, and the color filter substrate according to any one of claims 1 to 4, wherein the array substrate and the color filter substrate are stacked, the liquid crystal layer is located between the array substrate and the color filter substrate, and the control chip is located on the array substrate and electrically connected to the color filter substrate.

6. A display device comprising a backlight module and the display panel of claim 5, wherein the backlight module is located under the array substrate, and the light source of the backlight module comprises a micro light-emitting diode or a mini light-emitting diode.

7. A repairing method applied to the display device according to claim 6, comprising:

cutting the connection segment connected to the target common electrode region and cutting at least one of the first connection line and/or the second connection line such that the target common electrode region is individually connected to one conduction terminal;

8. The repairing method according to claim 7, wherein the brightness of the target common electrode region is lower than a preset brightness threshold, and the adjusting of the driving signal transmitted from the control chip to the conducting terminal comprises:

and increasing the voltage difference between the target common electrode area and the array substrate.

9. The repair method of claim 8, wherein the increasing the voltage difference between the target common electrode region and the array substrate comprises:

10. A repair method according to claim 7, wherein the determining that at least one target common electrode region is present in the common electrode layer further comprises:

detecting brightness values of the common electrode regions;

calculating to obtain an average brightness value on the color film substrate;