LCD (Liquid Crystal Display) panel drive circuit and method as well as display unit

Abstract

The invention provides an LCD (Liquid Crystal Display) panel drive circuit and method as well as a display unit. The LCD panel drive circuit comprises a control unit and a charge release module. The LCD panel drive method comprises the steps that a control signal is generated by the control unit when the LCD panel is shut down and output to the charge release module; and the charge release module leads residual charge on a pixel electrode and a public electrode to a ground terminal according to the control signal. According to the LCD panel drive circuit and method as well as the display unit provided by the invention, charge on the pixel electrode and the public electrode is led to the ground terminal when the LCD panel is shut down, so that no residual charge is left in the whole panel, the occurrence of abnormal pictures in shutdown is eliminated, the polarized probability of liquid crystals is reduced simultaneously, and the service life of the LCD panel is prolonged.

Description

technical field [0001] The invention relates to the field of flat panel display technology, in particular to a liquid crystal panel driving circuit and method, and a display device. Background technique [0002] In recent years, TFT-LCD (Thin Film Transistor-Liquid Crystal Display) has gradually replaced cathode ray tube CRT (Cathode Ray Tube) display and has become the mainstream of the new generation of display. Since LCDs are widely used in electronic products closely related to life, such as notebook computers, mobile phones, and TVs, people have higher and higher requirements for image quality, so the improvement of image quality has always been the goal pursued by related fields. [0003] Specifically, when the power supply (VDD) of the thin film transistor liquid crystal display is turned off, due to charging, after the display displays images for a long time, charges will be accumulated in the liquid crystal capacitance between two opposite electrodes, and this The ...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a liquid crystal panel drive circuit and method, and a display device, which are used to solve the problem that the residual charge on the pixel capacitor cannot be quickly released when the display device is turned off, resulting in polarization of the liquid crystal, destroying the display performance of the liquid crystal, and affecting the life of the LCD

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