Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 25, 2008
Patent Application Number
09451665
Date Filed
November 30, 1999
Patent Primary Examiner
Patent abstract
A TFT having a high threshold voltage is connected to the source electrode of each TFT that constitutes a CMOS circuit. In another aspect, pixel thin-film transistors are constructed such that a thin-film transistor more distant from a gate line drive circuit has a lower threshold voltage. In a further aspect, a control film that is removable in a later step is formed on the surface of the channel forming region of a TFT, and doping is performed from above the control film.
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