Patent ID: 7042430
Filing Date: 2006-05-09
Classification: G09G

Abstract:
1. A liquid crystal display device comprising: a liquid crystal display panel including a first substrate, a second substrate, a liquid crystal composition sandwiched between said first substrate and said second substrate, a plurality of pixels arranged in a matrix configuration on said first substrate, a plurality of video signal lines for supplying video signal voltages to said plurality of pixels; and a drive circuit for supplying video signal voltages to said plurality of video signal lines, wherein said drive circuit includes a selector circuit which receives display data signals, a gray scale voltage varying with time periodically, and time control signals varying in synchronism with said gray scale voltage, and selects a voltage level of said gray scale voltage in accordance with said display data signals in cooperation with said time control signals; said selector circuit has a plurality of display data signal lines coupled thereto for receiving said display data signals, and is composed of a plurality of series combinations of a plurality of processing circuits each disposed between two adjacent ones of said plurality of display data signal lines, and each of said plurality of processing circuits is composed of a parallel combination of a display data switching element and a time signal switching element, with a control terminal of said display data switching element being supplied with a corresponding one of said display data signals, and with a control terminal of said time signal switching element being supplied with a corresponding one of said time control signals; and a stabilizer circuit is provided to a gray scale voltage line for supplying said gray scale voltage such that a change in voltage or current is suppressed under varying loads on said gray scale voltage line.