发明名称 |
Display device and drive circuit therefor |
摘要 |
In an active matrix liquid crystal display device, the driver of a gate signal line is provided with a low-supply-voltage drive section and a high-supply-voltage drive section. A level shifter circuit in the high-supply-voltage drive section is made up of two CMOS circuits, to which a supply voltage Vdd2 (high-voltage power supply) is applied. Also, to two n-channel TFTs Tr3 and Tr7 in the level shifter circuit is applied a bias voltage Vdd1 (low-voltage power supply) which is a supply voltage different from the above supply voltage. This structure can prevent a high load from being exerted on only one n-channel TFT, thereby being capable of making the withstand voltage high.
|
申请公布号 |
US6525719(B2) |
申请公布日期 |
2003.02.25 |
申请号 |
US20010946364 |
申请日期 |
2001.09.06 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
YAMAZAKI SHUNPEI;KOYAMA JUN;SHIONOIRI YUTAKA |
分类号 |
G02F1/136;G02F1/133;G02F1/1368;G09G3/36;H01L27/12;H01L29/786;(IPC1-7):G09G5/00 |
主分类号 |
G02F1/136 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|