Patent ID: 8159434
Filing Date: 2012-04-17
Classification: G09G

Abstract:
1. A driving device for a liquid crystal display panel, wherein said liquid crystal display panel comprises a plurality of data electrodes arranged along a first direction, a plurality of scanning electrodes arranged along a second direction being approximately orthogonal to said first direction, and a liquid crystal layer, and wherein said driving device applies scanning signals to said plurality of scanning electrodes and display signals providing gray levels to the plurality of corresponding data electrodes to write pixel data providing gray levels on corresponding pixels of said liquid crystal layer in said liquid crystal display panel, the driving device comprising; a gray-level data outputting circuit to generate and output gray-level data or overshoot gray-level data based on input display data in previous and current frames for each pixel; and a data electrode driving circuit to perform an overshooting driving by applying said overshoot gray-level data as the displaying signal to said data electrodes, when said overshoot gray-level data is inputted, so that said overshoot gray-level data becomes an overvoltage being larger than a reference voltage, wherein said gray-level data outputting circuit comprises: an overshoot amount calculating unit to calculate an overshoot amount in a current frame based on input display data in said previous and current frames for each pixel; a correcting unit to predict an excessive response that may occur in a next-time frame based on input display data in said previous and current frames and to obtain a corrected amount of input display data in said next-time frame by using a value having approximately a same value as an excessive response level and having a reversed sign, when said excessive response is predicted, thereby preventing said excessive response; and a corrected overshoot amount calculating unit to calculate a corrected overshoot amount based on said corrected amount of said input display data in said next-frame.