发明名称 |
Active matrix liquid crystal panel driving device using multi-phase charge sharing |
摘要 |
A switching-controlling section turns ON one of a transfer gate for high voltages or a transfer gate for low voltages and subsequently turns ON the other one of the transfer gates according to the outputs from the data latches only when the outputs from data latches are different from each other. Source lines are sequentially connected to a capacitor element for high voltages or a capacitor element for low voltages. For those source lines in which applied voltages change in a previous period and a subsequent period, an electric charge is stored and supplied effectively and power consumption is reduced, whereas for those source lines in which the applied voltages do not change, retained voltages do not vary so power is not consumed when subsequent voltages are applied. Power consumption in a liquid crystal panel driving device is reduced, and the time required for storing and supplying an electric charge is shortened. The circuit scale is also reduced. <IMAGE> |
申请公布号 |
EP1345203(B1) |
申请公布日期 |
2010.05.05 |
申请号 |
EP20030005426 |
申请日期 |
2003.03.13 |
申请人 |
PANASONIC CORPORATION |
发明人 |
NISHI, KAZUYOSHI;DATE, YOSHITO |
分类号 |
G02F1/1368;G09G3/36;G02F1/133;G09G3/20 |
主分类号 |
G02F1/1368 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|