Patent ID: 7391401
Filing Date: 2008-06-24
Classification: G09G

Abstract:
1. An apparatus for driving a liquid crystal display including a plurality of pixels connected to gate lines and data lines and arranged in a matrix, the apparatus comprising: a gray voltage generator generating a plurality of gray voltages; a data driver selecting data voltages corresponding to image data from the gray voltages and applying the data voltages to the pixels; and a signal controller transmitting the image data for the data driver and generating and outputting control signals for controlling the image data to the data driver, wherein the data voltages include first data voltages for odd pixels and second data voltages for even pixels, the image data include the first image data for the first data voltages and the second image data for the second data voltages, the data driver applies the first data voltages and the second data voltages to the pixels in turn for a horizontal period, the control signals include an inversion signal for reversing the polarity of the first and the second data voltages and a common voltage applied to the pixels having a magnitude varying dependent on the polarity of the data voltages, and the signal controller changes a state of the inversion signal between an end of the transmission of the first image data and a start of the transmission of the second image data and the polarity of the common voltage between an end of the application of the data voltages for a row and a start of the application of the data voltages for a next row.