Liquid crystal display panel device

Abstract

Abstract PURPOSE:To obtain a device which has a long life and a high quality, and also does not require a charge storage capacity by detecting a ''0'' voltage level shift in a single direction applied to a liquid crystal layer, and feeding back a correcting voltage of this level shift to the liquid crystal layer. CONSTITUTION:When a drain bus line Dcomp is connected in advance to a ground potential, when level compensating transistors TrC1-TrCn are on, one end of level compensating liquid crystals LCc1-LCcn becomes the ground potential through the Dcomp. As for the LCc1-LCcn, when the Trc1-Trcn become off, the potential drops by DELTAVs from ''0''V of an initial state by a charge movement from a channel of the Trc1-Trcn, and a shift voltage DELTAVs is generated in the source of the Trc1-Trcn. It is fetched by a source bus line Scomp and received by an input terminal 51, and connected to a common electrode of a display panel from an output terminal 54 through an impedance converting buffer 52 and a peak holding circuit 53.

Inventors

• 👤 Satoru Kawai
• 👤 悟 川井
• 👤 Yasuhiro Nasu
• 👤 安宏 那須
• 👤 Kenichi Yanai
• 👤 梁井　健一
• 👤 Atsushi Inoue
• 👤 淳 井上

Bibliographic Details