Patent ID: 8610703
Filing Date: 2013-12-17
Classification: G09G

Abstract:
1. A liquid crystal display device comprising: a liquid crystal panel having specified number of columns of data electrodes, specified number of rows of gate electrodes, pixels each mounted at an intersection of each of said data electrodes and each of said gate electrodes, a first common electrode operating as a facing electrode of each of said pixels mounted so as to correspond to odd-numbered columns of said data electrodes and a second common electrode operating as a facing electrode of each of said pixels mounted so as to correspond to even-numbered columns of said data electrodes; a data driving section to write pixel data corresponding to each of said data electrodes in accordance with a video signal; a gate driving section to drive each of said gate electrodes in a specified order in accordance with said video signal; a common voltage generating section to generate a first common voltage whose polarity is inverted for every one horizontal period and to be applied to said first common electrode and to generate a second voltage having a polarity opposite to that of said first common voltage to be applied to said second common electrode in accordance with said video signal; a control unit to exert control on said data driving section, said gate driving section, and said common voltage generating section in accordance with a video signal, and output, for a specified time, a charge equilibration control signal to establish a charge equilibration between said first common voltage and said second common voltage at a change point of polarities of said first common voltage and second common voltage; and a charge equilibration unit to establish a charge equilibration between said first common electrode and said second common electrode by causing a shorting of a circuit between said first common electrode and second common electrode in accordance with the input charge equilibration control signal, wherein said charge equilibration unit comprises: a first switch to turn off a first common voltage to said first common electrode in accordance with the input charge equilibration control signal; a second switch to turn off a second common voltage to said second common electrode in accordance with the input charge equilibration control signal; and a third switch to turn on the connection between said first common electrode and said second common electrode in accordance with the input charge equilibration control signal.