发明名称 |
Shift register and method of driving the same |
摘要 |
<p>A clock pulse with a smaller amplitude voltage than the power supply voltage of the shift register is inputted to the shift register. The gate width of a TFT that constitutes a second clocked inverter of the shift register is set wide so as to reduce fluctuation in output electric potential due to leak current of a first clocked inverter. Further, a TFT is added to a first clocked inverter. A signal with an amplitude voltage of the same level as the power supply voltage is inputted to a gate electrode of the added TFT to switch between ON and OFF. The leak current of the first clocked inverter is thus cut off. <IMAGE></p> |
申请公布号 |
EP1280162(A2) |
申请公布日期 |
2003.01.29 |
申请号 |
EP20020015359 |
申请日期 |
2002.07.10 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
OSAME, MITSUAKI |
分类号 |
G02F1/133;G09G3/20;G09G3/36;G11C19/00;G11C19/28;(IPC1-7):G11C19/00 |
主分类号 |
G02F1/133 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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