Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shunpei Yamazaki0
Takayuki Ikeda0
Date of Patent
October 17, 2006
0Patent Application Number
095424730
Date Filed
April 4, 2000
0Patent Citations Received
Patent Primary Examiner
Patent abstract
To provide a semiconductor device of high reliability by arranging TFTs that have appropriate structures in accordance with circuit functions. In a semiconductor device having a driver circuit portion and a pixel portion on the same insulator, gate insulating films of a driver TFT are designed to be thinner than a gate insulating film of a pixel TFT. In the pixel TFT, channel forming regions are formed under a gate electrode, and a separation region is formed between the channel forming regions. At this point, LDD regions have a region that overlaps with the gate electrode and a region that does not.
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