Semiconductor device and process for production thereof

Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate

Reexamination Certificate

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C438S030000, C438S149000, C438S239000, C257S296000, C257S300000, C257SE21649

Reexamination Certificate

active

07727836

ABSTRACT:
Disclosed herein is a semiconductor device with high reliability which has TFT of adequate structure arranged according to the circuit performance required. The semiconductor has the driving circuit and the pixel portion on the same substrate. It is characterized in that the storage capacitance is formed between the first electrode formed on the same layer as the light blocking film and the second electrode formed from a semiconductor film of the same composition as the drain region, and the first base insulating film is removed at the part of the storage capacitance so that the second base insulating film is used as the dielectric of the storage capacitance. This structure provides a large storage capacitance in a small area.

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