发明名称 |
EL display device having a pixel portion and a driver circuit |
摘要 |
To improve the operation characteristic and reliability of a semiconductor device by optimizing the structure of bottom gate type or inverted stagger type TFTs arranged in circuits of the semiconductor device in accordance with the function of the respective circuits. At least LDD regions that overlap with a gate electrode are formed in an N channel type TFT of a driving circuit, and LDD regions that do not overlap with the gate electrode are formed in an N channel type TFT of a pixel matrix circuit. The concentration of the two kinds of LDD regions is differently set from each other, to thereby obtain the optimal circuit operation.
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申请公布号 |
US6614076(B2) |
申请公布日期 |
2003.09.02 |
申请号 |
US20010905587 |
申请日期 |
2001.07.13 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KAWASAKI RITSUKO;KITAKADO HIDEHITO;KASAHARA KENJI;YAMAZAKI SHUNPEI |
分类号 |
G02F1/1362;H01L21/336;H01L21/77;H01L21/84;H01L27/12;H01L27/32;H01L29/786;(IPC1-7):H01L29/04;H01L31/20;H01L31/036;H01L31/037;H01L27/01 |
主分类号 |
G02F1/1362 |
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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