Driving circuit used for liquid crystal panel

Abstract

The invention provides a driving circuit for a liquid crystal panel, which includes a gate driver and a source driver. Wherein, the gate driver includes a first level shift circuit electrically coupled to the first voltage, the ground voltage and the second voltage. The source driver includes a second level shift circuit, which is electrically coupled to at least one of the first voltage and the second voltage, and the second voltage is increased by the higher first voltage and / or the second voltage of the gate driver. The current driving capability of the translational bit circuit is improved, thereby improving the process tolerance of the liquid crystal panel. Compared with the prior art, the present invention uses the threshold voltage of the gate driver with a higher panel operating voltage to access the level shift circuit of the source driver with a lower voltage, so that the nodes of the level shift circuit can operate at a larger The applied voltage can obtain a larger drive current, and then use the buffer circuit at the end to drop back to the desired voltage, so as to determine the use position of the voltage according to different needs.

Description

technical field [0001] The invention relates to a liquid crystal panel, in particular to a driving circuit for the liquid crystal panel. Background technique [0002] Low Temperature Poly-silicon (LTPS) is another new technology following amorphous silicon (Amorphous-Silicon, a-Si) in the field of flat panel displays. In short, polysilicon (Poly-silicon) is a silicon-based material with a size of about 0.1 microns to several microns, which is composed of many silicon particles. In the semiconductor manufacturing industry, polysilicon is usually processed by Low Pressure Chemical Vapor Deposition (LPCVD) and then annealed at a temperature higher than 900 degrees Celsius. However, since the maximum temperature of glass is only 650 degrees Celsius, the above method is not suitable for the flat panel display process, so the low temperature polysilicon technology is particularly suitable for the flat panel display industry. [0003] The electron mobility of traditional amorphou...

AI Technical Summary

Problems solved by technology

[0004] In view of this, how to design a new structure of driving circuit for liquid crystal panels to improve the process tolerance problem caused by the low operating voltage of the level shift circuit, so as to overcome the above-mentioned defects or deficiencies of the prior art, is an important issue in the industry. A subject to be solved urgently by relevant technicians

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