Patent ID: 7212186
Filing Date: 2007-05-01
Classification: G09G

Abstract:
1. An image display device, having a pixel portion arranged with pixels in a matrix and a drive circuit including a switch circuit connected to each data line shared by pixels in each column of said pixel portion for sampling a video signal and successively outputting to the data line, comprising: a timing detection circuit for generating a timing detection signal changing from a first level to a second level every time said switch circuit sends said video signal; and a timing adjustment circuit for adjusting an operation timing of said switch circuit based on said timing detection signal; wherein said timing detection circuit includes at an output terminal of said timing detection signal a means for closing a current path on said first level side and a means for opening a current path on said second level side respectively in synchronization with a video signal sending operation of said switch circuit, and wherein: said switch circuit comprises two reverse-conductive type transistors driven by two drive pulses having reversed phases and sources thereof are connected to each other and drains thereof are connected to each other; and said timing detection circuit is driven by two drive pulses having reversed phases generated by the same circuit configuration with that of said drive pulses for driving said switch circuit.