Patent ID: 7224342

Claim:
A device used for eliminating the image overlap blurring in the process of simulating CRT impulse type image display, comprising: a first input control line; a second input control line; a first input data line; a second input data line; a first capacitor; a second capacitor; driving voltage output line; a first transistor comprising a first gate connected to the first input control line, a first source connected to the first input data line, and a first drain connected to the driving voltage output line and the first capacitor and the drain of the second transistor; and a second transistor, comprising: a second gate connected to the second input control line, a second source connected to the second input data line, a second drain connected to the drain of the said first transistor and the second capacitor and driving voltage output line; wherein the said first capacitor and the said second capacitor are storage capacitor and liquid crystal equivalent capacitor respectively and are connected to ground, the driving voltage output line is used to output the driving voltage used for simulation to the said pixels of the LCD panel so as to display images, and including backlight unit with adjustable and controllable luminance and backlight input voltage control line; and characterized in that the said first and second input control lines are connected to a gate driver, and the said first and second input data lines are connected to a data driver respectively; the time difference of the periodic pulse waveforms between the first and second control signals is the time difference across n scanning lines generated by n pulses, and which can be adjusted; and during the interval of black lines scanning, when the luminance of the backlight unit is reduced to the lowest value through its control voltage, the accumulated liquid crystal optical response in that interval can be brought to the lowest value, so as to achieve the purpose and effectiveness of eliminating the after image overlap blurring between the frames.