Discharge control circuit, method for controlling sub-pixel discharge, and display device

Abstract

The embodiment of the invention provides a discharge control circuit, a method controlling sub-pixels to discharge, and a display device, and relates to the display technical field; when a display screen switches to a light-up state from a sleep state, the display screen splashing phenomenon happening probability can be reduced; the discharge control circuit comprises an amplification module, a rectification module, a display state determination module, an enable signal generation module and a discharge driving module; the amplification module collects the voltage on a pixel electrode and amplifies the voltage; the rectification module converts the AC voltage outputted by the amplification module into DC voltage; the display state determination module determines a sub-pixel display state according to the voltage outputted by a power supply voltage end; the enable signal generation module outputs an enable signal when the sub-pixel is in the sleep state according to the sub-pixel display state and the voltage outputted by the rectification module; the discharge driving module outputs the voltage on a scanning signal end to a grid line according to the enable signal; the discharge control circuit is used for controlling the sub-pixel to discharge.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a discharge control circuit, a method for controlling sub-pixel discharge, and a display device. Background technique [0002] TFT-LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Transistor Liquid Crystal Display), as a flat panel display device, has become more and more popular due to its small size, low power consumption, no radiation and relatively low production cost. It is widely used in the field of high-performance display. [0003] Wherein, the above-mentioned display devices, such as mobile phones, are frequently used in people's daily life. During use, the display device will be in the off-screen or on state many times. In the prior art, when switching from the off-screen state to the on state, the display screen may flicker. This is because in the off-screen state, the charges inside the display screen are not released, but remain in the display...

AI Technical Summary

Problems solved by technology

The above-mentioned unreleased charges will drive the liquid crystal molecules in the display device with DC, and after a period of time, the two poles of the liquid crystal molecules will accumulate charges, resulting in a DC bias. When the screen is turned on again, the normal AC drive voltage will be the same as The above-mentioned DC bias is superimposed, so that during the polarity inversion process, the voltage difference of the data voltage of two adjacent frames is different, resulting in flickering phenomenon on the screen

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