Array substrate, liquid crystal display panel and liquid crystal display

Abstract

The invention discloses an array substrate, a liquid crystal display panel and a liquid crystal display and is used for eliminating the phenomenon that light is leaked from the edge of a display area when gate voltage is switched between starting voltage and stopping voltage. The array substrate provided by the invention comprises a common electrode, a gate lead and a shielding electrode, wherein the shielding electrode is positioned above the gate lead and insulated from the gate lead.

Description

technical field [0001] The present invention relates to the technical field of liquid crystal display (Liquid Crystal Display, LCD), in particular to an array substrate, a liquid crystal display panel and a liquid crystal display. Background technique [0002] Liquid crystal display technology develops rapidly, and has become a new star in the industry and a bright spot in economic development. While liquid crystal displays are developing vigorously, wide viewing angles, high image quality and fast response speed have become urgent requirements for liquid crystal display devices. Currently, Advanced Super Dimension Switch (ADvanced Super Dimension Switch, ADSDS, ADS for short), and In-Plane Switching (IPS) type, or Vertical Alignment-In-Plane Switching (Vertical Aligment-In-Plane Switching, VA -IPS) type liquid crystal display and other technologies, which have the characteristics of wide viewing angle, high image quality and fast response speed, and are very suitable for a...

AI Technical Summary

Problems solved by technology

The human eye is most sensitive to green light (greenish), so when light leakage occurs at the edge of the display area, the human eye mostly perceives green light. As the resolution of liquid crystal display panels becomes higher and higher, the number of gate leads More and more, the distribution of gate leads is getting denser, making it easier to form an instantaneous vertical electric field between the gate leads 22 and the black matrix 25, resulting in this light leakage phenomenon is particularly obvious, people feel greenish when observing serious

Especially for LCDs in normally black mode, the light leakage at the edge of the display area is very fatal

[0006] In the prior art, in order to solve the problem of light leakage at the edge of the display area of ​​the liquid crystal display panel due to the instantaneous electromagnetic signal on the grid lead, in the process of designing the liquid crystal display panel, by controlling the resistance of the black matrix, such as setting resistance higher than 10 14 Ω black matrix, or set the resistance below 10 6 Ω black matrix to alleviate the light leakage at the edge of the display area caused by the pixel electrodes of the liquid crystal display panel when they are turned on and off

But for a black matrix with a higher resistance value, the panel will generate a lot of heat during operation, which will easily soften or deform some areas of the panel

For the black matrix with a lower resistance value, the material requirements for the black matrix are very strict in the actual production process, and it is often not easy to achieve

Whether it is a black matrix with a high resistance value or a black matrix with a low resistance value, working in a high temperature environment for a long time will affect the performance of the LCD

[0007] To sum up, the existing technology cannot solve the phenomenon of light leakage at the edge of the display area of ​​the liquid crystal display panel caused when the gate voltage is switched between the on voltage and the off voltage.

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