Patent ID: 6734499
Filing Date: 2004-05-11
Classification: H01L,Y10S

Abstract:
An operating method of a semiconductor device comprising a step of driving a thin film transistor having no hysteresis characteristic in the gate voltageâ€”drain current characteristic thereof, wherein said thin film transistor comprises:a channel region comprising non-single crystalline silicon doped with hydrogen or halogen and having an intrinsic, p-, or n-conductivity type; source and drain regions comprising polycrystalline silicon and forming respective junctions with said channel region where the channel region is disposed between said source and drain regions whereby charge carriers move through said channel region between said source and drain regions in a path substantially parallel to said substrate; a gate insulating film contacting said channel region; and a gate electrode contacting said gate insulating film; wherein at least a portion of said channel region contains carbon in an amount not exceeding 5Ã—1018 atoms/cm3, and said channel region is interposed between the gate insulating film and another insulator.