Patent ID: 6331723
Filing Date: 2001-12-18
Classification: G02F,H01L

Abstract:
An active matrix display device comprising:a substrate having an insulating surface;a first signal line;a first thin film transistor having a first channel region interposed between a first pair of impurity regions, and a second pair of impurity regions between said first channel region and said first pair of impurity regions formed in a first semiconductor film over said substrate wherein a first gate electrode of said first thin film transistor is connected to said first signal line;a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor;a second thin film transistor having a second channel region interposed a third pair of impurity regions, and a fourth pair of impurity regions between said second channel region and said third pair of impurity regions formed in a second semiconductor film over said substrate wherein a second gate electrode of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor;a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said third pair of impurity regions of said second thin film transistor, anda pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said third pair of impurity regions of said second thin film transistor.