Drive method, compensation processor and drive device of liquid crystal display device

Abstract

The invention relates to a drive method, a compensation processor and a drive device of a liquid crystal display device. The drive method comprises the following steps: a data signal of a current frame is received, the average brightness value of the current frame is acquired, at least two backlight drive pulse signals which have graded duty cycles are generated and output to drive a backlight if the difference value between the brightness values of the current frame and the last frame is larger or equal to a preset threshold value. The compensation processor comprises a data analysis module, a data compensation module, a backlight linear filtering module and a pulse generation module. The drive device adopts the compensation processor. The invention realizes the gradient of the brightness of the backlight by adopting a technological measure for generating a plurality of backlight drive pulse signals, thereby solving the problem that the liquid crystal display device suffers from flicker as the brightness of the backlight changes suddenly and improving the display effect of the liquid crystal display device.

Description

technical field [0001] The present invention relates to a driving method for a liquid crystal display device, a compensation processor and a driving device, in particular to a driving method for performing compensation after analyzing video data input to a liquid crystal display device, and a compensation processor for realizing analysis and compensation, and A drive unit using the compensation processor. Background technique [0002] Liquid crystal display devices, especially thin film transistor liquid crystal display devices (Thin Film Transistor-Liquid Crystal Display, hereinafter referred to as TFT-LCD) have the characteristics of light weight, thin thickness, low power consumption, suitable for low voltage drive, etc., and are widely used in mobile phones, Various image display media devices such as monitors and TVs. [0003] The main structure of the existing common liquid crystal display device includes an array substrate and a color filter substrate arranged in pai...

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Problems solved by technology

[0006] However, there is a defect in the driving method of the existing liquid crystal display device using the dynamic contrast technology: although the data signal can be compensated by analyzing the frequency spectrum of the data signal, the output data signal can be changed according to the set driving frequency, but due to the backlight The change of light brightness has a step-by-step characteristic, and it does not change smoothly. Therefore, after the compensation and adjustment of the pictures of adjacent frames, there will be a sharp change in the brightness of the backlight as a whole, which may lead to flickering. Therefore, The display effect of the liquid crystal display device is reduced

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