Patent ID: 7098479
Filing Date: 2006-08-29
Classification: H01L

Abstract:
1. An active matrix display device having a pixel portion and a driver circuit portion, said driver circuit portion including at least one pair of complementary p-channel and n-channel thin film transistors, and said pixel portion including at least one thin film transistor, each of said transistors comprising: a crystalline semiconductor island on an insulating surface, said semiconductor island having source and drain regions and a channel region; a gate insulating film adjacent to at least said channel region; a gate electrode adjacent to said gate insulating film; a leveling film covering each of said thin film transistors in both of the pixel portion and a part of the driver circuit portion; a pixel electrode formed over the leveling film, wherein said semiconductor island of p-channel thin film transistor has a hole mobility in the range of 10 cm wherein each of said semiconductor islands has a thickness in the range of 5000 Å or less, and wherein the crystalline semiconductor islands of the thin film transistors of the pixel portion and the driver circuit portion are formed by a same process simultaneously.