Patent ID: 6875999
Filing Date: 2005-04-05
Classification: H01L

Abstract:
1. A liquid crystal display device comprising: an active matrix circuit and a driving circuit formed over a substrate; and an inverter circuit formed in the driving circuit, the inverter circuit having at least one pair of an N-channel thin film transistor and a P-channel thin film transistor electrically connected to the N-channel thin film transistor, wherein each of the N-channer and P-channel thin film transistors comprises a semiconductor layer having a channel region interposed between source and drain regions, and a gate electrode adjacent to the channel region with a gate insulating film interposed therebetween, and wherein a gate width of the P-channel thin film transistor is shorter than that of the N-channel thin film transistor, wherein the semiconductor layer of the N-channel thin film transistor further comprises a lightly-doped drain region between the channel region and one of the source and drain regions.