Patent ID: 7688301
Filing Date: 2010-03-30
Classification: G09G

Abstract:
1. A driving apparatus of a liquid crystal display device, comprising: a liquid crystal display panel having a liquid crystal cell of a matrix shape to display a video signal; N number of data drive circuits that generate a polarity pattern of the video signal and supply it to the liquid crystal cell through a plurality of output channels, wherein each N number of data drive circuit has the plurality of output signals; and a polarity controller that generates second and third polarity signals from a first polarity signal to supply it to the N number of data drive circuits on the basis of a first selection signal corresponding to the number of the output channels and a second selection signal corresponding to a repetition period of the polarity pattern, wherein the second polarity signal is the first polarity signal, and the third polarity signal is inverted or as it is from the first polarity signal, and wherein the polarity patterns of the N number of data drive circuits that the inverted third polarity signal is supplied are inverted in response to the inverted third polarity signal, wherein the polarity controller includes a first input terminal supplied the first polarity signal, a second input terminal to which the first selection signal is inputted in accordance with the inversion method of the liquid crystal display panel, a third input terminal to which the second selection signal corresponding to the number of output channels of the data drive circuits is inputted, a first output terminal to output the second polarity signal and a second output terminal to invert and output the third polarity signal, wherein the first output terminal is connected to each of the odd-numbered data drive circuits, and the second output terminal is connected to each of the even-numbered data drive circuits.