Display panel and display device
By adopting a T-shaped or L-shaped third data repair line design in the LCD panel, the problem of insufficient wiring space for the data line repair line in the narrow frame design is solved, the narrow frame design is realized and the risk of electrostatic discharge is reduced.
Patent Information
- Application Number
- CN202423007399.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-05
AI Technical Summary
In LCD panels with narrow bezel designs, the wiring space requirements for data line repair lines increase, resulting in an increase in bezel width, which limits the development of bezel-free designs.
A T-shaped or L-shaped third data repair line design is adopted. By setting multiple data repair lines in the non-display area and electrically connecting them at the overlap, the number of data repair lines on the side of the display panel is reduced. The design is T-shaped or L-shaped to save space.
It effectively reduces the design pressure on both sides of the short side of the display panel, realizes a narrow bezel design, avoids the problems of increased resistance and signal attenuation caused by excessively long data lines, and reduces the risk of electrostatic discharge.
Smart Images
Figure CN223450297U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of panel, and particularly relates to a display panel with a data line repair function and a display device. BACKGROUND
[0002] In the existing design and manufacture of liquid crystal panels, data line disconnection often occurs, causing bright line abnormalities. To deal with such abnormalities, the OP hardware on the driving integrated circuit is usually used to complete the data line repair operation. First, the data line of the abnormal pixel is disconnected by laser, and then the near-end data line is welded with the data line spare line, and the remote-end data line is welded with the OP input end. This method can convert the bright line abnormality into a dark spot, which is less sensitive to the human eye than the bright line, and is more easily accepted. The product specification is upgraded, and the yield is higher.
[0003] In the existing design of liquid crystal panel repair, the data line spare line needs to be led out from the chip on film on the side of the panel, bypass the short side of the panel, and distributed on the remote terminal side of the panel to realize data line repair. However, with the increasingly wide application of large-size liquid crystal panels, narrow-frame or even frameless design has become the mainstream. This design trend puts higher requirements on the wiring of the data line spare line.
[0004] Specifically, the narrow-frame design needs to accommodate the GOA (Gate on Array) and its transmission line in the extremely small space of the short side of the panel, and also needs to reserve space for the data line spare line. This results in an increase in the width of the left and right frames, which brings difficulties to the design of narrow-frame products and may limit the development of future frameless liquid crystal panels. Therefore, how to effectively repair the data line while maintaining the narrow-frame design has become a problem to be solved in the prior art. UTILITY MODEL CONTENT
[0005] In view of this, the purpose of the present application is to provide a display panel and a display device which can effectively reduce the wiring space of the data line repair line.
[0006] The utility model discloses a first mode relates to a display panel, with display area and non - display area, its characterized in that, the display panel includes: a plurality of thin film -on -chip, its side -by -side setting in non - display area, a plurality of data line, its parallel and through setting in display area and non - display area, data line repair structure, its setting in non - display area, including a plurality of first data repair line, a plurality of second data repair line and at least one third data repair line, the first data repair line one end from the thin film -on -chip lead, and the first data repair line's other end with the data line one end insulating overlap, the second data repair line one end from the thin film -on -chip lead, a plurality of the second data repair line's other end with the at least one third data repair line one end insulating overlap, the at least one third data repair line's other end with a plurality of data line's other end insulating overlap, when the data line of a certain data line occurs broken line and repairs the data line, the first data repair line and the at least one third data repair line are respectively with the data line in the position of mutual overlap electric connection, and the second data repair line with the at least one third data repair line in the position of mutual overlap electric connection.
[0007] The utility model discloses a second mode relates to a display device, it includes above-mentioned display panel.
[0008] The display panel of the application does not need to wire all the data repair lines led from the thin film -on -chip at its side, by the third data repair line in the data line repair structure is designed as T shape or L shape, can reduce the number of data repair lines of the side of display panel, effectively reduce the wiring space of data repair line, thereby greatly reduce the design pressure of the short side of display panel two sides. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is the structure schematic diagram of display device provided by the application.
[0010] Figure 2 It is the plane layout schematic diagram of display panel of first embodiment.
[0011] Figure 3 It is the partial close -up view of data line repair structure of first mode.
[0012] Figure 4 It is the data line repair structure schematic diagram of second embodiment.
[0013] Figure 5 It is the partial close -up view of data line repair structure of second embodiment. DETAILED DESCRIPTION
[0014] The following description of the embodiments with reference to the accompanying drawings is provided to illustrate specific embodiments in which the application can be practiced. The drawings and description are not meant to be limiting in nature. In the drawings, like reference numerals indicate like elements throughout the several views. Also, for the purpose of clarity and brevity, the dimensions of each component shown in the drawings are not to scale, but are merely intended to facilitate the description of the application. In addition, in the specification, unless explicitly described to the contrary, the word "comprise" will be understood to mean the inclusion of the stated component but not the exclusion of any other components.
[0015] The data line repairing structure of the embodiment of the present application will be described below with reference to the accompanying drawings.
[0016] First Embodiment
[0017] Please refer to Figure 1 , the display device 1000 includes a display panel 100, a power module 200 and a support frame 300. The display panel 100 and the power module 200 are fixed to the support frame 300, and the power module 200 is arranged on the back of the display panel 100, that is, the non-display surface of the display panel 100. The power module 200 is used to provide power voltage for the display panel 100 to display images, and the support frame 300 provides fixing and protection for the display panel 100 and the power module 200. In other embodiments of the present application, the display device 1000 can not need to be provided with the support frame 300, for example, portable electronic devices such as mobile phones, tablet computers and the like.
[0018] As shown in Figure 2 , the display panel 100 has a display area 10 and a non-display area 20 arranged adjacent to each other. The display area 20 of the display panel 100 is provided with a plurality of scanning lines (not shown in the figure) extending along a first direction and arranged in sequence along a second direction, a plurality of data lines 11 extending along the second direction and arranged in sequence along the first direction, and a plurality of pixel units (not shown in the figure) arranged in an array. The pixel units are used to receive scanning signals from the scanning lines and receive data signals from the data lines for image display under the control of the scanning signals.
[0019] The non-display area 20 is provided with a timing control circuit, a data driving circuit 2 and a scanning driving circuit. The timing control circuit receives image signals, horizontal synchronization signals and vertical synchronization signals representing image information from an external signal source, and outputs clock signals, scanning control signals for controlling the scanning driving circuit, and data control signals for controlling the data driving circuit. The data driving circuit is used to output data signals (Data) to the pixel units in the display area 10 according to the data control signals. The scanning driving circuit receives the timing control circuit for outputting scanning signals to the pixel units in the display area 10 according to the scanning control signals.
[0020] The display panel 100 further includes a data line repair structure 21 and a plurality of chip-on-films 31. The data line 11 is disposed in the display area 10, and the data line repair structure 21 and the plurality of chip-on-films 31 are disposed in the non-display area 20. The plurality of chip-on-films 31 are disposed side by side in the non-display area 20.
[0021] The data repair structure 21 includes a plurality of first data repair lines 211 , a plurality of second data repair lines 212 and at least one third data repair line 213 .
[0022] One end of each first data repair line 211 is led out from the chip-on-film 31, and the other end of each first data repair line 211 is insulated and overlapped with one end of multiple data lines. One end of each second data repair line 212 is led out from the chip-on-film 31, and the other end of the multiple second data repair lines 212 is insulated and overlapped with one end of a third data repair line 213 among the multiple third data repair lines 213. The third data repair lines 213 are insulated and overlapped with the other ends of the multiple data lines 11. That is, in this case, the first data repair lines 211 correspond one-to-one with the second data repair lines 211, and the number of third data repair lines 213 is less than the number of second data repair lines 212.
[0023] In this case, on both sides of the display panel 100, the other ends of the multiple second data repair lines 212 are insulated and overlapped with one end of a third data repair line 213 among the multiple third data repair lines 213, thereby reducing the space occupied by the data repair lines at the side of the display panel and saving frame space.
[0024] For example, Figure 3 As shown, at the intersection of the second data repair line 212 and the third data repair line, the third data repair line 213 may be in the shape of a letter T. At the intersection, the third data repair line 213 includes a horizontal line and a vertical line extending vertically from the middle of the horizontal line. The horizontal line is connected to multiple second data repair lines 212, and each third data repair line 213 is insulated and overlapped with multiple second data repair lines 212.
[0025] For example, Figure 4 As shown, in another embodiment, at the intersection of the second data repair line 212 and the third data repair line, the third data repair line 213 can be in the shape of a letter L. At the intersection, the third data repair line 213 includes a horizontal line and a vertical line extending perpendicularly from one end of the horizontal line. The horizontal line connects to multiple second data repair lines 212, and each third data repair line 213 is insulated and overlaps with multiple second data repair lines 212. In other embodiments, each third data repair line 213 can also be insulated and overlap with all second data repair lines 212.
[0026] Taking the laser impedance issue into consideration, ≥4 laser point positions are reserved at each overlap, and the overlap area is reduced according to the specifications of the repair equipment.
[0027] When designing the width of the third data repair line 213, the OP (output thrust) on the COF (Chip on Film) and the related impedance value need to be comprehensively considered. In addition, the number of third data repair lines 213 can be adjusted based on the space required by the GOA (Gate on Array) board.
[0028] Furthermore, in this embodiment, the third data repairing lines 213 are insulated and overlapped with multiple data lines. Therefore, if a data line is broken, the broken data line can be connected to the third data repairing line by welding.
[0029] like Figure 2 As shown, when a data line in the display panel is disconnected, the following steps are performed:
[0030] Step S1: A data line 11 is broken, and the broken data line 11 includes a first portion and a second portion. A first data repair line 211 corresponding to the first portion of the broken data line 11 is identified, and one end of the first data repair line 211 is welded to the intersection of one end of the first portion of the broken data line 11, so that the chip-on-film 31 receives the electrical signal from the broken data line.
[0031] Step S2: According to the first data repair line 211 determined in step S1, determine the corresponding second data repair line 212, and determine the third data repair line 213 corresponding to the second data repair line 212, and weld the overlapping part of the determined second data repair line 212 and the third data repair line 213.
[0032] Step S3: Weld the other end of the third data repair line 213 determined in step S2 to the overlapping part of one end of the second part of the broken data line 11, so that the flip chip film 31 outputs the electrical signal to the second part of the broken data line, thereby forming a new signal transmission path to replace the broken data line 11, and the electrical signal is transmitted to the pixel unit via the new route after repair.
[0033] This ensures the continuity and integrity of electrical signals during transmission.
[0034] Through the above steps, the first to third data repair lines in the data line repair structure 21 are turned on to replace the broken data lines in transmitting electrical signals.
[0035] As described above, in the present case, the data repair lines led out from the thin film of the display panel do not need to be routed on the side edges of the display panel, and by designing the third data repair line in the data line repair structure in a T shape, the number of data repair lines on the side edges of the display panel can be reduced, thereby greatly reducing the design pressure on both sides of the short side of the display panel, and facilitating the realization of a narrow frame design.
[0036] Second embodiment
[0037] The difference between the second embodiment and the first embodiment is that the third data repair line 213 is formed by the insulation overlap of a plurality of wires, and the other structures are the same as those of the first embodiment, and therefore the description thereof is omitted.
[0038] As shown in FIG. 1, since the third data repair line needs to cover all the data lines in the display panel, the wire is relatively long. In the case of a too long data line, problems such as increased resistance and signal attenuation are easily caused, which leads to the occurrence of ESD (electrostatic discharge) problems. Therefore, when designing a display panel or other electronic devices, it is necessary to avoid using too long data lines as much as possible to reduce the risk of ESD problems. Figure 2 As shown in FIG. 1, the third data repair line 213 can be connected by two-point or multi-point connection to form. The third data repair line 213 can be completed by the same metal, or different metals can be connected by welding to complete the wire. By connecting the third data repair line in the form of two-point or multi-point connection, the occurrence of ESD problems can be reduced.
[0039] Figure 5 As shown in FIG. 1, the third data repair line 213 can be connected by two-point or multi-point connection to form. The third data repair line 213 can be completed by the same metal, or different metals can be connected by welding to complete the wire. By connecting the third data repair line in the form of two-point or multi-point connection, the occurrence of ESD problems can be reduced.
[0040] Each third data repair line includes a first part and a second part that are insulated and overlapped with each other, and a plurality of second data repair lines are respectively arranged in the first part of the third data repair line. When a data line is broken and repaired, the first data repair line and the data line are electrically connected at the overlapping position, the second data repair line and the third data repair line are electrically connected at the overlapping position, and the first part and the second part of the third data repair line are electrically connected at the overlapping position, so as to realize two-point connection of the third data repair line.
[0041] Each third data repair line comprises a first part, a second part and a third part which are insulated and overlapped with each other, and a plurality of second data repair lines are arranged in insulated and overlapped manner with the first part of the third data repair line, when a data line is broken and repaired, the first data repair line is electrically connected with the data line at the overlapped position, the second data repair line is electrically connected with the third data repair line at the overlapped position, the first part of the third data repair line is electrically connected with the second part at the overlapped position, and the second part is electrically connected with the third part at the overlapped position, so as to realize multi-point series connection of the third data repair line.
[0042] As described above, the embodiments of the present application are illustrative in all aspects, not limited by the above description. Therefore, the technical scope of the present application is not only interpreted by the above embodiments, but is defined based on the description of the claims. In addition, all modifications within the meaning and scope equivalent to the claims are included.
Claims
1. A display panel having a display area and a non-display area, characterized in that: The display panel includes: A plurality of flip-chip films are arranged side by side in the non-display area; A plurality of data lines are arranged parallel to each other and penetrate the display area and the non-display area. The data line repair structure is arranged in the non-display area and includes a plurality of first data repair lines, a plurality of second data repair lines and at least one third data repair line. One end of the first data repair line is led out from the chip-on-film, and the other end of the first data repair line is insulated and overlapped with one end of the data line. One end of the second data repair line is led out from the chip-on-film, and the other ends of the plurality of second data repair lines are insulated and overlapped with one end of the at least one third data repair line. The other end of the at least one third data repairing line is insulated and overlapped with the other ends of the plurality of data lines. When a data line is broken and the data line is repaired, the first data repair line and the at least one third data repair line are electrically connected to the data line at overlapping positions, and the second data repair line and the at least one third data repair line are electrically connected to each other at overlapping positions.
2. The display panel according to claim 1, wherein One end of the third data repair line is T-shaped and includes a first portion and a second portion vertically extending from the middle of the first portion. The first portion is insulated and overlapped with the plurality of second data repair lines.
3. The display panel according to claim 2, wherein: One end of the third data repair line is L-shaped and includes a first portion and a second portion vertically extending from one end of the first portion. The first portion is insulated and overlapped with the plurality of second data repair lines.
4. The display panel according to claim 2 or 3, wherein: When the data line is broken, a corresponding first data repair line is determined according to the broken data line, and one end of the first data repair line is welded to the overlapping portion of one end of the broken data line, so that the chip-on-film receives the electrical signal of the broken data line through the first data repair line. According to the determined first data repair line, a corresponding second data repair line is determined, and a third data repair line corresponding to the second data repair line is determined, and the overlap of the determined second data repair line and the third data repair line is welded. The other end of the determined third data repair line is welded to an overlapping portion with the other end of the data line where the line is broken. The first to third data repair lines are made conductive to replace the disconnected data lines in transmitting electrical signals.
5. The display panel according to claim 2 or 3, wherein: The third data repair line can be connected in a two-point series connection or a multi-point series connection.
6. The display panel according to claim 5, wherein: Each third data repair line includes a first portion and a second portion that are insulated and overlapped with each other. A plurality of the second data repairing lines are respectively insulated and overlapped with the first portion of the third data repairing line. When a data line is broken and the data line is repaired, the first data repair line is electrically connected to the data line at a mutually overlapping position. The second data repair line and the third data repair line are electrically connected at a mutually overlapping position. The first portion and the second portion of the third data repair line are electrically connected at a mutually overlapping position to achieve a two-point series connection of the third data repair line.
7. The display panel according to claim 5, wherein: Each third data repair line includes a first portion, a second portion, and a third portion that are insulated and overlapped with each other. A plurality of the second data repairing lines are respectively insulated and overlapped with the first portion of the third data repairing line. When a data line is broken and the data line is repaired, the first data repair line is electrically connected to the data line at a mutually overlapping position. The second data repair line and the third data repair line are electrically connected at a mutually overlapping position. The first portion and the second portion of the third data repair line are electrically connected at a mutually overlapping position, and the second portion and the third portion are electrically connected at a mutually overlapping position, so as to realize multi-point series connection of the third data repair line.
8. The display panel according to claim 2 or 3, wherein: The third data repairing line may be formed of the same metal or different types of metals.
9. The display panel according to claim 1, wherein: The at least one third data repair line is arranged on the side and top of the non-display area, The plurality of COFs, the plurality of the first data repairing lines and the plurality of the second data repairing lines are located at the bottom of the non-display area.
10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.