Liquid crystal display panel driving method, driving circuit and display device

Abstract

The invention provides a driving method, a driving circuit and a display device of a liquid crystal display panel, which belong to the technical field of display. Wherein, the driving method of the liquid crystal display panel includes: sending a common electrode signal to the common electrode line of the liquid crystal display panel, so that the common voltage signal passing through the common electrode line is in the unit of K frames between the first common voltage and the first common voltage. The two common voltages are reversed, the polarities of the first common voltage and the second common voltage are opposite with respect to the reference voltage, and K is an integer greater than 1. The technical scheme of the present invention can improve the color gamut of the display device, reduce the dynamic power consumption of the circuit system, and reduce the EMI.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a driving method, a driving circuit and a display device of a liquid crystal display panel. Background technique [0002] In the liquid crystal display panel of the related art, a higher driving voltage is required to drive the liquid crystal to invert. Since the data voltage transmitted on the data line cannot meet the requirements of the driving voltage, it is necessary to use a common voltage signal inversion method to increase the driving voltage. The inversion frequency of the voltage signal is the frame frequency. Due to the polarity inversion of adjacent frames, the voltage of the liquid crystal capacitor plate will change greatly, resulting in a longer charging and discharging time, compressing the lighting time, and resulting in a lower color gamut of the liquid crystal display panel. In addition, the inversion of the common voltage signal will lead to high dyna...

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Problems solved by technology

[0002] In the liquid crystal display panel of the related art, a higher driving voltage is required to drive the liquid crystal to flip. Since the data voltage transmitted on the data line cannot meet the requirements of the driving voltage, it is necessary to use a public voltage signal flipping method to increase the driving voltage. The inversion frequency of the voltage signal is the frame frequency. Due to the polarity inversion of adjacent frames, the voltage of the liquid crystal capacitor plate will change greatly, resulting in a longer charge and discharge time, which compresses the lighting time, resulting in a lower color gamut of the liquid crystal display panel. Moreover, the inversion of the common voltage signal will lead to high dynamic power consumption of the circuit system, and will also cause EMI (Electro Magnetic Interference, electromagnetic interference) to other electrical signals.

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