Patent ID: 8305318
Filing Date: 2012-11-06
Classification: G09G

Abstract:
1. A liquid crystal display device comprising: pixels arranged in a matrix on a translucent substrate; gate lines and source lines provided in a corresponding manner to said pixels; an active element at an intersection of each of said gate lines and each of said source lines, said active element having a drain electrode connected to said pixel; a gate driver circuit supplying a gate signal to said gate lines; a source driver circuit supplying source signals to said source lines so that source signals having a positive polarity voltage relative to a common potential of said pixels and source signals having a negative polarity voltage relative to said common potential are almost equal in number during one horizontal interval; and a timing controller circuit supplying prescribed signals to said gate driver circuit and said source driver circuit to control said circuits, wherein a vertical blanking interval includes: a setting data output interval, a short circuit interval after said setting data output interval, and a holding interval after said short circuit interval, said source driver circuit, during said setting data output interval, conducts a prescribed operation of supplying each of said source signals of positive polarity and negative polarity with a prescribed voltage to said source lines to gradually change voltages of said source lines, said source driver circuit, during said short circuit interval, electrically cuts said source lines off from an output buffer of the source driver circuit after the supply of said source signals while establishing a short circuit between adjoining source lines of said source lines supplied with said source signals of opposite polarities thereby causing said source lines to gradually change to and then hold a source holding potential having a DC voltage value during said holding interval, and said source holding potential is set higher than said common potential of said pixels and lower than a source intermediate potential of said source signals of positive polarity and negative polarity.