Patent ID: 6388653
Filing Date: 2002-05-14
Classification: G09G

Abstract:
A liquid crystal display device comprising a liquid crystal display element having a plurality of pixels each being adapted to be supplied with a video signal voltage corresponding to a display data via a corresponding one of a plurality of video signal lines, and a video signal line driver circuit for supplying said video signal voltage to each of said plurality of video signal lines,said video signal line driver circuit including: a plurality of differential amplifiers each having a pair of a first input terminal and a second input terminal and amplifying a video signal inputted thereto and supplying said amplified video signal to a corresponding one of said plurality of video signal lines; a plurality of pairs of an inverting input terminal and a noninverting input terminal each pair corresponding to each of said plurality of differential amplifiers, said plurality of differential amplifiers each having a switching circuit for switching between a first state and a second state, said first state being a state where said first input terminal is coupled to said inverting input terminal and said second input terminal is coupled to said noninverting input terminal, and said second state being a state where said first input terminal is coupled to said noninverting input terminal and said second input terminal is coupled to said inverting input terminal; and a switching control circuit for providing a switching control signal to said switching circuit such that switching between said first state and said second state is performed with a specified period.