Anti-static liquid crystal display screen

Abstract

The utility model discloses a kind of anti-static liquid crystal display, it is related to liquid crystal display technical field, including display screen substrate and the ITO film being located in its inside, the ITO film is divided into display area and non-display area, display area is equipped with pixel electrode and common electrode, and non-display area is equipped with frame trace;Multiple breakpoints are equipped with in the frame trace, for cutting off electrostatic conduction passage;The four corners of non-display area are equipped with corner guide wire, and corner guide wire is connected with frame trace, and its end away from frame trace is connected to the grounding end of display screen;The utility model is designed by setting breakpoint in frame trace and combining the design of four-corner grounding guide wire, effectively blocks and guides to release static electricity, significantly improves the antistatic ability and reliability of liquid crystal display, simple structure, suitable for large-scale manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, specifically to an anti-static liquid crystal display. Background Technology

[0002] Liquid crystal displays (LCDs) are a common type of display device widely used in consumer electronics, industrial control, and medical equipment. Internally, they typically contain an ITO (indium tin oxide) film as a transparent conductive layer to form the pixel electrodes, common electrodes, and bezel traces. However, during the production, transportation, or use of the display, static electricity generated by the human body or the environment can easily penetrate the interior through the cross-sections or surfaces of the bezel traces, damaging the pixel electrodes or common electrodes in the display area. This can lead to abnormalities such as bright spots, dark lines, and flickering, and in severe cases, directly damage the display function.

[0003] Existing antistatic technologies mostly involve coating the ITO film surface with an antistatic coating or adding an independent discharge structure. However, the antistatic coating may affect the light transmittance of the display screen, while the independent discharge structure requires additional manufacturing equipment, which increases production costs and is prone to interference with existing display driving circuits, leading to a decrease in display performance. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the background technology mentioned above, and to provide an anti-static liquid crystal display screen that takes into account anti-static effect, display compatibility and process adaptability.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: an anti-static liquid crystal display screen, comprising a display screen substrate and an ITO film disposed within the display screen substrate, the ITO film being divided into a display area and a non-display area, the display area being provided with pixel electrodes and a common electrode, and the non-display area being provided with a frame trace; the frame trace is provided with multiple breakpoints at intervals to cut off the electrostatic conduction path; corner wires are provided at the four corners of the non-display area, the corner wires are connected to the frame traces, and the end of the corner wire away from the frame traces is connected to the grounding terminal of the display screen.

[0006] Furthermore, the display substrate comprises, from top to bottom, an upper glass substrate, the ITO film, a liquid crystal layer, the ITO film, and a lower glass substrate.

[0007] Furthermore, the non-display area is an annular region surrounding the display area; the border trace is an annular ITO lead extending along the non-display area.

[0008] Furthermore, the breakpoints are arranged adjacent to each other on the ITO leads of both the long and short sides of the border trace.

[0009] Furthermore, the break point is filled with insulating resin, which is a high-temperature resistant epoxy insulating resin.

[0010] Furthermore, the corner conductor is a multi-layered conductor folded along the rectangular sides of the four corners of the non-display area.

[0011] Furthermore, FPC bonding areas are provided on the left and right sides of the non-display area, and the corner wire is connected to the FPC grounding pin through conductive silver paste.

[0012] Furthermore, the breakpoint is prepared by photolithography and etching processes.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting multiple breakpoints on the frame traces, the continuous path of static electricity conduction is cut off, effectively preventing static electricity from entering the display area and protecting the internal circuits from static damage; corner wires are set at the four corners of the non-display area and connected to the frame traces to guide residual static charge to the grounding terminal, realizing rapid release of static electricity and further improving the overall anti-static capability.

[0014] 2. The corner conductors employ a multi-conductor structure with folded configurations to enhance mechanical strength and electrical connection reliability. They are connected to the FPC grounding pins via conductive silver paste, ensuring a stable grounding path suitable for harsh environments. The breakpoints are fabricated using photolithography and etching processes, resulting in high precision and consistency, suitable for mass production. The breakpoints are filled with high-temperature resistant epoxy insulating resin to enhance insulation performance and prevent secondary discharge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the ITO film in this utility model; Figure 2 This is a cross-sectional view of the display substrate in this utility model; Figure 3 This is a schematic diagram of the structure of the ITO film in this utility model; Figure 4 for Figure 3 Enlarged view of the breakpoint in section A; Figure 5 for Figure 3 Enlarged view of the angle conductor in section B.

[0016] In the diagram: 1-Display substrate, 2-ITO film, 3-Bezel trace, 4-Breakpoint, 5-Corner wire, 6-Upper glass substrate, 7-Liquid crystal layer, 8-Lower glass substrate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Combination Figures 1 to 5 An anti-static liquid crystal display screen is shown, including a display substrate 1 and an ITO film 2 disposed inside it. The ITO film 2 is divided into a display area and a non-display area. The display area is provided with pixel electrodes and a common electrode. The non-display area is a ring-shaped area surrounding the display area, in which a border trace 3 is provided.

[0020] The bezel trace 3 is a ring-shaped ITO lead, extending along the non-display area. Multiple breakpoints 4 are spaced apart on the bezel trace 3 to interrupt electrostatic conduction paths. These breakpoints 4 are fabricated using photolithography and etching processes to ensure precise dimensions and consistent positioning. To further enhance insulation performance, the breakpoints 4 can be filled with high-temperature resistant epoxy insulating resin.

[0021] Corner conductors 5 are provided at the four corners of the non-display area. The corner conductors 5 are connected to the bezel traces 3, and the end of the corner conductors 5 away from the bezel traces 3 is connected to the grounding pin of the FPC pressing area through conductive silver paste, forming an effective electrostatic discharge path. The corner conductors 5 adopt a multi-wire structure folded along the rectangular side to improve mechanical strength and electrical reliability.

[0022] The display substrate 1 comprises, from top to bottom, an upper glass substrate 6, an ITO film 2, a liquid crystal layer 7, another ITO film 2, and a lower glass substrate 8. FPC bonding areas are provided on the left and right sides of the non-display area for connecting flexible printed circuit boards (FPCs). Corner conductors 5 are reliably connected to the grounding pins on the FPC via conductive silver paste.

[0023] In actual manufacturing, this invention first uses photolithography and etching processes to form the border lines and breakpoints on the ITO film. Then, insulating resin is applied to the breakpoints and cured. Finally, the corner wires are connected to the FPC grounding pins using screen printing or dispensing. This structure not only effectively suppresses electrostatic interference to the display area but also possesses good process compatibility and reliability, making it suitable for various LCD display products.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-static liquid crystal display screen, comprising a display substrate (1) and an ITO film (2) disposed within the display substrate (1), characterized in that: The ITO film (2) is divided into a display area and a non-display area. The display area is provided with pixel electrodes and a common electrode, and the non-display area is provided with a frame trace (3). Multiple breakpoints (4) are provided on the frame trace (3) at intervals to cut off the electrostatic conduction path. Corner wires (5) are provided at the four corners of the non-display area. The corner wires (5) are connected to the frame trace (3), and the end of the corner wire (5) away from the frame trace (3) is connected to the ground terminal of the display screen.

2. The anti-static liquid crystal display screen according to claim 1, characterized in that: The display substrate (1) includes, from top to bottom, an upper glass substrate (6), the ITO film (2), a liquid crystal layer (7), the ITO film (2), and a lower glass substrate (8).

3. The anti-static liquid crystal display screen according to claim 2, characterized in that: The non-display area is a ring-shaped area surrounding the display area; the border trace (3) is a ring-shaped ITO lead extending along the non-display area.

4. The anti-static liquid crystal display screen according to claim 3, characterized in that: The breakpoint (4) is set adjacent to the ITO lead on both the long and short sides of the frame trace (3).

5. The anti-static liquid crystal display screen according to claim 4, characterized in that: The breakpoint (4) is filled with insulating resin, which is a high-temperature resistant epoxy insulating resin.

6. The anti-static liquid crystal display screen according to claim 5, characterized in that: The corner wire (5) is a multi-wire folded along the rectangular sides of the non-display area.

7. The anti-static liquid crystal display screen according to claim 6, characterized in that: The left and right sides of the non-display area are provided with FPC crimping areas, and the corner wire (5) is connected to the FPC grounding pin through conductive silver paste.

8. The anti-static liquid crystal display screen according to claim 1, characterized in that: The breakpoint (4) is prepared by photolithography and etching processes.

Images