Control method for eliminating closedown ghost as well as display device and drive device

Abstract

Provided is a control method for eliminating the shutdown ghost and a display device and a driving device using the same, wherein the display device includes a display panel, a source driver and a control device. The display panel includes a plurality of pixels, wherein the source driver is used for providing the pixel voltage to teh pixel, and the control device is used for receiving the control signal, and determining whether providing a first voltage to the pixel according to the control signal, and determining whether the source driver provides the pixel voltage to the pixel. When the system voltage of the display device is smaller than the scheduled voltage, the control device determines that the source driver stops providing the pixel voltage to the pixel and the control device provides the first voltage to the pixel.

Description

technical field [0001] The present invention relates to a display device, in particular to a control method capable of eliminating power-off afterimages, a display device and a driving circuit using the method. Background technique [0002] With the development of optoelectronic and semiconductor technologies, the vigorous development of panel displays has been driven. Among many panel displays, Thin Film Transistor Liquid Crystal Display (TFT-LCD), which has superior characteristics such as high space utilization efficiency, low power consumption, no radiation, and low electromagnetic interference, has recently become the mainstream in the market. Since thin film transistor liquid crystal displays are widely used in notebook computers, mobile phones, televisions and other electronic products that are closely related to life, the improvement of image quality has always been the goal of continuous pursuit. [0003] Generally speaking, abnormal screen display can be prevented...

AI Technical Summary

Problems solved by technology

Since the control signal CLK1 and the control signal POL that control the output of the source driver are in unknown states 403 and 404 respectively, the control signal CLK1 (such as figure 2 description) is also to control the switching of the first switch group 208, thus causing the connection terminal Z of the source driver to 1 ~ Z n Also in unknown status 401

In other words, when all the thin film transistors on the panel scanning line are turned on, the voltage of each data line on the panel is different, which will cause the charge discharge speed in the pixel or sub-pixel capacitor on the panel to be inconsistent, resulting in uneven power-off afterimages.

Images