CN216928001U

CN216928001U - Display circuit abnormity repair system

Info

Publication number: CN216928001U
Application number: CN202220481695.XU
Authority: CN
Inventors: 刘汉先
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-07-08
Anticipated expiration: 2032-03-07

Abstract

The utility model relates to a display circuit abnormity repairing system, wherein the display circuit abnormity repairing system is applied to a display panel, the display panel comprises a display area and a GOA area, the display circuit abnormity repairing system comprises repairing equipment and at least one repairing wire, and the at least one repairing wire is arranged in the GOA area. By arranging at least one repairing line in the GOA area of the display panel and repairing the abnormal position of the GOA area by combining repairing equipment, the GOA circuit can be quickly repaired when the GOA circuit is abnormally damaged, such as explosion, and the like, so that the circuit repairing efficiency is improved, and the abnormal phenomenon of the display panel when the display panel displays a picture is eliminated.

Description

Display circuit abnormity repair system

Technical Field

The utility model relates to the technical field of display, in particular to a display circuit abnormity repairing system.

Background

Currently, the mainstream Liquid Crystal panel based on Liquid Crystal Display (LCD) technology is mainly a GOA (i.e., Gate Driver on Array) type Liquid Crystal Display panel. The GOA type liquid crystal display panel designs the GOA circuit comprising the grid switch circuit on the array substrate of the liquid crystal display panel, so that the number of grid driving chips can be saved, and the development cost of liquid crystal display products is reduced.

However, in the related art, the voltage difference between the GOA signals in the GOA circuit is large, and the frequency of switching the high level and the low level is high, so that the GOA circuit is easily damaged (for example, short-circuited) during the use process, thereby causing abnormal display such as dense horizontal lines or black screen display of the liquid crystal display panel.

Disclosure of Invention

In view of this, the present invention provides a display circuit abnormality repairing system, which can rapidly repair a GOA circuit when the GOA circuit has an abnormality such as an explosion, thereby improving the circuit repairing efficiency and further eliminating the abnormality of a display panel when the display panel displays a picture.

According to an aspect of the present invention, a display circuit abnormality repairing system is provided, which is applied to a display panel, the display panel includes a display area and a GOA area, and the display circuit abnormality repairing system includes a repairing device and at least one repairing line, wherein the at least one repairing line is disposed in the GOA area.

Furthermore, a plurality of GOA units are arranged in the GOA area, the input of each GOA unit is electrically connected with at least one GOA signal line, and the output of each GOA unit is electrically connected with the gate line in the corresponding display area.

Further, the at least one repair line is arranged on the input side of each GOA unit, and is in an open circuit state with any signal line on the input side of each GOA unit.

Furthermore, each of the GOA signal lines includes a first sub-line and a second sub-line, and for any one of the GOA signal lines, the first sub-line and the second sub-line of the signal line are perpendicular to each other.

Furthermore, the first sub-lines of the GOA signal lines are parallel to each other, and the second sub-lines of the GOA signal lines are parallel to each other.

Further, each repair line is arranged on a second sub-line of at least one GOA signal line and is perpendicular to each second sub-line.

Furthermore, part of the GOA signal lines comprise third sub-lines, wherein in the GOA signal lines provided with the third sub-lines, the third sub-lines of each GOA signal line are parallel to the second sub-lines of the signal lines.

Further, each repair line is disposed on a third sub-line of at least one of the GOA signal lines.

Furthermore, the repair device is arranged on the GOA area and comprises a detection unit, and the detection unit is used for detecting abnormal GOA signal lines.

Furthermore, the repair device further comprises a repair unit, the repair unit is electrically connected with the detection unit, and the repair unit is used for disconnecting at least one node of the abnormal GOA signal line by adopting a laser mode when any GOA signal line is abnormal, and connecting the at least one node of the abnormal GOA signal line to the corresponding GOA unit through the at least one repair line.

According to the utility model, the GOA circuit can be quickly repaired when the GOA circuit is abnormal, such as explosion and the like, according to the aspects of the utility model, the circuit repairing efficiency is improved, and the abnormal phenomenon of the display panel when the display panel displays a picture is eliminated.

Drawings

The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.

Fig. 1 is a schematic diagram showing a display circuit abnormality repairing system according to an embodiment of the present invention.

Fig. 2 shows a schematic diagram of a display panel according to an embodiment of the present invention.

Fig. 3 is a schematic diagram showing a display circuit abnormality repairing system according to an embodiment of the present invention.

Fig. 4 is a schematic diagram showing the repair of an abnormality of a display circuit according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials. In some instances, methods, procedures, components, and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.

The utility model mainly provides a display circuit abnormity repair system which is applied to a display panel, wherein the display panel comprises a display area and a GOA area, the display circuit abnormity repair system comprises repair equipment and at least one repair line, and the repair line is arranged in the GOA area.

By arranging at least one repairing line in the GOA area of the display panel and repairing the abnormal position of the GOA area by combining repairing equipment, the GOA circuit can be quickly repaired when the GOA circuit is abnormally damaged, such as explosion, and the like, so that the circuit repairing efficiency is improved, and the abnormal phenomenon of the display panel when the display panel displays a picture is eliminated.

As shown in fig. 1, the display panel 11 may include a display area 12 and a GOA area 13. The repair line 14 may be any one, and the repair line 14 may be disposed in the GOA region 13. The repair device may be arranged above the GOA region 13 and in a different plane than the GOA region 13.

A plurality of pixel units arranged in rows and columns may be disposed in the display region 12, and each pixel unit may include one or more sub-pixel units. A thin film transistor corresponding to each sub-pixel unit may be disposed in the sub-pixel unit.

Further, a plurality of gate lines (i.e., scan lines) and a plurality of data lines may be disposed in the display region 12. Each gate line can be electrically connected to the gates of the tfts in a row of the sub-pixel units, respectively, so as to control the operating state (e.g., on or off) of the tfts in the row of the sub-pixel units corresponding to the gate line; each data line can be electrically connected with the drain electrode of the thin film transistor in the corresponding sub-pixel unit, so that when the thin film transistor in the sub-pixel unit is in a conducting state, a data signal on the corresponding data line is sent into the sub-pixel unit, and then the sub-pixel unit is driven to emit light, and the picture display of the display panel is realized.

Further, the GOA region may be disposed outside the display region. For example, in fig. 1, the GOA region may be disposed around the display region. In practical applications, the GOA region may also be disposed at one of the four sides of the display region. It is to be understood that the relative position of the GOA area and the display area is not limited in the present invention.

Furthermore, a plurality of GOA units are arranged in the GOA area, the input of each GOA unit is electrically connected with at least one GOA signal line, and the output of each GOA unit is electrically connected with the gate line in the corresponding display area. For example, the GOA signal lines may include a voltage signal, a start signal, and a clock signal. There may be multiple clock signals, each input to a corresponding GOA unit. The output of each GOA unit is electrically connected with the corresponding gate line.

It should be noted that, in practical applications, each of the GOA units may be cascaded in sequence. That is, a partial signal of each of the GOA units can be used as an input of a next-stage GOA unit. It can be understood that there are various structures for cascading each of the GOA units, and the present invention is not limited to how each of the GOA units is cascaded.

Further, the at least one repair line is arranged on the input side of each GOA unit, and is in an open circuit state with any signal line on the input side of each GOA unit. Namely, the at least one repair line is not intersected with any signal line on the input side of each GOA unit, so as to avoid influencing other parts except for abnormity in each GOA unit. The at least one repair line may not transmit any signal.

As shown in fig. 2, the display panel 21 includes a display area 22 and a GOA area 23. The area 24 is a part of the boundary between the display area 22 and the GOA area 23. A more detailed illustration of the region 24 is presented in fig. 3.

As shown in fig. 3, the output of each of the GOA units (i.e., goacircults) may be gate signals G (1), G (2).. G (n), G (n + 1). The output of the nth GOA unit may correspond to the nth row Gate Line (i.e., Gate Line) of the display area, the output of the nth GOA unit may correspond to the nth row sub-pixel unit of the display area, and g (n) may control all thin film transistors of the nth row sub-pixel unit in the display area to be turned on or off.

Referring to fig. 3, the GOA signal lines may include a voltage signal, a start signal, and a clock signal. There may be a plurality of clock signals, and each clock signal may be electrically connected to a corresponding GOA unit. For example, in fig. 3, clock signal CK1 can be electrically connected to the 1 st GOA cell, clock signal CK2 can be electrically connected to the 2 nd GOA cell, and so on. The voltage signal VCOM may be electrically connected to each of the GOA units, and the start signal STV may also be electrically connected to each of the GOA units. In practical applications, the voltage signal or the start signal of each GOA unit may also be different.

Furthermore, each of the GOA signal lines includes a first sub-line and a second sub-line, and for any one of the GOA signal lines, the first sub-line and the second sub-line of the signal line are perpendicular to each other. For example, in fig. 3, a first sub-line of the clock signal CK1 may be a portion of the clock signal in a vertical direction, and a second sub-line of the clock signal CK1 may be a portion of the clock signal in a horizontal direction at the bottom. The second sub-line of the clock signal CK1 may be electrically connected to other circuit portions of the display panel. VCOM may be provided with a first sub-line and no second sub-line. It is to be understood that the first sub-line and the corresponding second sub-line may intersect, and the present invention is not limited to the positions of the first sub-line and the corresponding second sub-line.

Furthermore, the first sub-lines of the GOA signal lines are parallel to each other, and the second sub-lines of the GOA signal lines are parallel to each other. For example, in fig. 3, the first sub-lines of the respective clock signal, the start signal STV, and the voltage signal VCOM may be parallel to each other in the vertical direction; the respective clock signals and the second sub-line of the start signal STV may be parallel to each other in the horizontal direction.

Further, each repair line is arranged on a second sub-line of at least one GOA signal line and is perpendicular to each second sub-line. Illustratively, one repair line (i.e., goareapiair) is disposed in the GOA area in fig. 3, and the repair line is disposed on the second sub-line of at least one of the GOA signal lines and perpendicular to the second sub-line of each of the clock signal and the start signal STV. It should be noted that the repair line in fig. 3 does not intersect with each GOA signal line, i.e., the repair line may cross over the second sub-line of each GOA signal line.

Furthermore, part of the GOA signal lines comprise third sub-lines, wherein in the GOA signal lines provided with the third sub-lines, the third sub-lines of each GOA signal line are parallel to the second sub-lines of the signal lines. For example, in fig. 3, a third sub-line of each clock signal may perpendicularly intersect the first sub-line of the clock signal, and the intersecting node may be directly electrically connected to the corresponding GOA cell. In fig. 3, the third sub-line of each GOA signal line is parallel to the second sub-line of the signal line and perpendicular to the first sub-line of the signal line. In practical applications, for example, the signal line of the other GOA signal such as the start signal may include a third sub-line, that is, the other GOA signal line except the clock signal may be electrically connected to the corresponding GOA unit, which is not limited in the present invention.

Further, each repair line is disposed on a third sub-line of at least one of the GOA signal lines. For example, in fig. 3, the repair line crosses the second sub-line of each clock signal and the start signal STV, and also crosses the third sub-line of each clock signal.

Furthermore, the repair device is arranged on the GOA area and comprises a detection unit, and the detection unit is used for detecting abnormal GOA signal lines. It is to be understood that the present invention is not limited to the specific implementation of the detecting unit.

In one example, the repair unit may include a processor. Abnormal signals in the GOA area can be sent to a processor in the repair unit, the processor can judge the position where the abnormality occurs according to the abnormal signals and send instructions to a laser mechanism, so that the laser mechanism can carry out laser on corresponding nodes, at least one node of a GOA signal wire related to the abnormality is disconnected, and the GOA signal wire is connected to the corresponding GOA unit through the at least one repair wire.

As shown in fig. 4, for example, the clock signal CK2 and the clock signal CKN have a circuit explosion point a, which makes the clock signal CK2 and the clock signal CKN conductive (i.e., short-circuited), and further causes the gate signals output by the 2 nd GOA unit and the nth GOA unit to be abnormal, so that the display panel may have display abnormalities such as a horizontal dense line or a black screen when displaying a picture.

Referring to fig. 4, a repair line is added to the embodiment of the present invention. The repair line is located between the VCOM line and each of the GOA cells. When the repair device works, the point B of the third sub-line of the clock signal CKN can be radiussed to be disconnected in a radium-shine mode, the point C of the third sub-line is radiussed to be disconnected, and the point D of the repair line is radiussed to be disconnected, so that the short circuit phenomenon among GOA signals is eliminated.

Further, in fig. 4, a laser may be applied to a short circuit at a position E where a third sub-line of the clock signal CKN intersects with the repair line, so that a corresponding nth GOA cell is connected to the repair line. And then, the intersection position F point of the repair line and the second sub-line of the clock signal CKN is subjected to laser to short circuit, so that the clock signal CKN is connected with the corresponding nth GOA unit through the repair line, and the purpose of repairing the short circuit abnormality between the GAO signal lines is achieved. Of course, in practical application, the position and number of the repair lines can be set according to the requirement, and the utility model is not limited to this.

In summary, in the embodiment of the utility model, at least one repair line is arranged in the GOA area of the display panel, and the repair equipment is combined to repair the abnormal part of the GOA area, so that the GOA circuit can be quickly repaired when the GOA circuit has an abnormality such as an explosion, the circuit repair efficiency is improved, and the abnormal phenomenon of the display panel when the display panel displays a picture is eliminated.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The display circuit abnormality repairing system provided by the embodiment of the utility model is described in detail, a specific example is applied in the text to explain the principle and the implementation of the utility model, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the utility model; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present invention in its embodiments.

Claims

1. The display circuit abnormity repair system is applied to a display panel, the display panel comprises a display area and a GOA area, the display circuit abnormity repair system comprises repair equipment and at least one repair line, and the repair line is arranged in the GOA area.

2. The system for repairing abnormality of display circuit according to claim 1, wherein a plurality of GOA units are provided in said GOA area, an input of each of said GOA units is electrically connected to at least one GOA signal line, and an output of each of said GOA units is electrically connected to a gate line in a corresponding display area.

3. The system for repairing abnormality of display circuit according to claim 2, wherein said at least one repair line is provided on an input side of each of said GOA units in an open state with respect to any signal line on the input side of each of said GOA units.

4. The display circuit abnormality repairing system according to claim 3, wherein each of the GOA signal lines includes a first sub line and a second sub line, and the first sub line and the second sub line of the signal line are perpendicular to each other for any one of the GOA signal lines.

5. The display circuit abnormality recovery system according to claim 4, wherein first sub-lines of the respective GOA signal lines are parallel to each other, and second sub-lines of the respective GOA signal lines are parallel to each other.

6. The display circuit abnormality repairing system according to claim 5, wherein each of said repair lines is provided on a second sub-line of at least one of said GOA signal lines and is orthogonal to each of said second sub-lines.

7. The display circuit abnormality repairing system according to claim 6, wherein a part of the GOA signal lines include a third sub-line, and wherein the third sub-line of each GOA signal line is parallel to the second sub-line of the signal line in the GOA signal line provided with the third sub-line.

8. The display circuit abnormality repairing system according to claim 7, wherein each of said repairing lines is provided on a third sub-line of at least one of said GOA signal lines.

9. The system for repairing abnormality of display circuit according to claim 2, wherein said repair device is provided on said GOA area, said repair device including a detection unit for detecting a GOA signal line in which abnormality occurs.

10. The system for repairing abnormality of display circuit according to claim 9, wherein the repair device further includes a repair unit electrically connected to the detection unit, the repair unit being configured to, when abnormality occurs in any one of the GOA signal lines, disconnect at least one node of the GOA signal line associated with the abnormality in a laser manner, and connect to the corresponding GOA unit through the at least one repair line.