Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – On insulating substrate or layer
Reexamination Certificate
2007-02-13
2007-02-13
Schillinger, Laura M. (Department: 2813)
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
On insulating substrate or layer
C438S151000, C438S160000
Reexamination Certificate
active
10756455
ABSTRACT:
The present invention provides a semiconductor device in which a bottom-gate TFT or an inverted stagger TFT arranged in each circuit is suitably constructed in conformity with the functionality of the respective circuits, thereby attaining an improvement in the operating efficiency and reliability of the semiconductor device. In the structure, LDD regions in a pixel TFT are arranged so as not to overlap with a channel protection insulating film and to overlap with a gate electrode by at least a portion thereof. LDD regions in an N-channel TFT of a drive circuit is arranged so as not to overlap with a channel protection insulating film and to overlap with a gate electrode by at least a portion thereof. LDD regions in a P-channel TFT of the drive circuit is arranged so as to overlap with a channel protection insulating film and to overlap with the gate electrode.
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Hatano et al., “A Novel Self-Aligned Gate-Overlapped LDD Poly-Si TFT WITH High Reliability and Performance”, IDEM Technical Digest 97, pp. 523-526.
Kasahara Kenji
Kawasaki Ritsuko
Kitakado Hideto
Costellia Jeffrey L.
Nixon & Peabody LLP
Schillinger Laura M.
Semiconductor Energy Laboratory Co,. Ltd.
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