Liquid crystal display and method for driving same

Abstract

The embodiment of the invention provides a liquid crystal display and method for driving same. The liquid crystal display comprises a grid drive circuit, a control circuit and a charge sharing circuit. The control circuit provides a charge sharing signal according to the parasitic capacitance values of a first and second output ends of the grid drive circuit. The charge sharing circuit shares charges with a first and second clock signals based on the charge sharing signal to generate a third and fourth clock signals corresponding to each other, wherein the third clock signal comprises the waveform drop edge from a high potential to a first potential, while the fourth clock signal comprises the waveform drop edge from high potential to a second potential. The grid drive circuit respectively outputs a first and second grid drive signals at the first and second output ends according to the third and fourth clock signals. The flicker can be effectively removed by regulating the shared voltage V<COM> by using the invention.

Description

technical field [0001] The invention relates to a liquid crystal display, in particular to a liquid crystal display capable of improving screen flicker and a method for driving the liquid crystal display. Background technique [0002] Liquid crystal display (LCD) has the advantages of low radiation, small size and low energy consumption, and has gradually replaced the traditional cathode ray tube display (CRT), so it is widely used in notebook computers, Personal digital assistant (personal digital assistant, PDA), flat-screen TV, or information products such as mobile phones. The driving method of traditional liquid crystal display is to use external source driver circuit (source driver) and gate driver circuit (gate driver) to drive the pixels on the panel to display images. For example, the technology of integrating a gate driver circuit (gate driver) into a liquid crystal panel (gate driver on array, GOA). [0003] Please refer to figure 1 , figure 1 It is a schemati...

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Problems solved by technology

[0011] exist Figure 4 The driving method shown in the prior art reduces the gate voltage across the same range, although the effect of the feed-through voltage can be reduced, but the feed-through voltage of each pixel unit is still different, so it cannot effectively adjust the common voltage V COM to eliminate screen flickering

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