Design structure for electrostatic protection of broken code display screen

Abstract

The invention discloses a design structure for electrostatic protection of a broken code display screen. The design structure comprises a conductive film of upper ITO glass, an anti-electrostatic shielding wire, an FPC flat cable, a discharge TVS tube, a silver paste point and a conductive Mylar. The upper ITO glass is double-sided conductive ITO glass, the surface of the top layer of the upper ITO glass is covered with a layer of ITO conductive film, a common electrode COM-ITO wire is designed on the upper surface of the upper ITO glass, stroke segment SEG-ITO wires corresponding to working patterns are designed on the surface of the lower ITO glass, and the lower surface of the upper ITO glass corresponds to the patterns on the upper surface of the lower ITO glass one to one. ITO patternwires are arranged on the surface of the lower ITO glass, and a layer of ITO conducting film is adhered to the upper surface of the ITO glass. According to the invention, shielding grounding and driving wiring on the plane are utilized to keep synchronous signals, no phase difference exists, no potential difference exists in a working display pattern, an electric field cannot be built, and liquidcrystal molecules cannot deflect; when static electricity is generated on the ITO film, static charges can be quickly dredged, and no residual charges exist on the display surface.

Description

technical field [0001] The invention belongs to the technical field of display information, and in particular relates to a design structure for electrostatic protection of a broken code display screen. Background technique [0002] As a widely used display device at present, broken code screens are also particularly susceptible to abnormal display due to static electricity during actual use, especially in the current replacement of new energy vehicles. Larger size broken code LCD screens are a kind of Cost-effective display devices are half or more cheaper than full LCD screens, and are gradually sought after by various instrument manufacturers. However, if the ITO design of broken codes is not standardized, it is easy to cause static electricity accumulation, especially in the area where the ITO layout and wiring are densely required for display pens. It leads to abnormal phenomena such as large areas of whitening; therefore, many manufacturers are particularly cautious in...

AI Technical Summary

Problems solved by technology

Use the blank area between the COM-ITO wiring layer and the SE-ITO wiring layer in the liquid crystal cell to design and fill the triangular blocks or squares. Even so, it cannot solve the existence of the self-built induced electric field in the liquid crystal cell, causing the carriers to continuously flow accumulation

Therefore, it is impossible to completely solve the whitening phenomenon caused by the accumulation of electrostatic charge in the dense display area.

[0004] At present, there is a liquid crystal display technology that makes the upper ITO glass into a double-sided ITO mold, coats the upper surface of the ITO glass with an ITO conductive film, and uses the entire ITO surface to shield the liquid crystal display technology, but the design of the discharge path of the entire conductive film is directly grounded , not only can not solve the problem of static electricity accumulation, but also cause EMC test NG, there are serious quality problems

Images