Patent ID: 7701430
Filing Date: 2010-04-20
Classification: G09G

Abstract:
1. A driving circuit of a liquid crystal display device driven by means of the dot inversion driving system, said driving circuit comprising: a gradation voltage generation circuit feeding a plurality of voltages higher than a predetermined potential and a plurality of voltages lower than the predetermined potential; a source line output part having a DA converter outputting a gradation voltage selected from the gradation voltage generation circuit according to an input signal, said source line output part outputting the gradation voltage to the respective source lines such that adjacent odd numbered columns of the source line and even numbered columns of the source line having opposite polarities each other, wherein polarities are defined based on the predetermined potential; first shorting parts shorting the odd numbered columns of the source lines with each other; second shorting parts shorting the even numbered columns of the source lines with each other; a third shorting part shorting the odd numbered columns of the source lines with the even numbered columns of the source lines; and a fourth shorting part connecting a first voltage supply line supplying a first voltage higher than the predetermined potential and a second voltage supply line supplying a second voltage lower than the predetermined potential shorting said first voltage supply line or said first voltage supply line.