Patent ID: 7535536
Filing Date: 2009-05-19
Classification: G02F,H01L

Abstract:
1. A display device comprising: a substrate; a gate line formed over the substrate; a first insulating film formed over the substrate and the gate line; a thin film transistor having a semiconductor film formed over the first insulating film and comprising an i-type semiconductor and an impurity-doped semiconductor; a drain electrode formed over the semiconductor film; a source electrode formed over the semiconductor film; a data line connected to the drain electrode and formed over the first insulating film; a second insulating film formed over the source electrode and the data line; a pixel electrode electrically connected to the source electrode and formed over the second insulating film; and a transparent conductive film connected to the data line through a contact hole formed in the second insulating film, wherein the transparent conductive film includes a first portion which none of the first insulating film and the second insulating film underlie, and wherein in a channel region of said semiconductor film of said thin film transistor where said source electrode and said drain electrode are disposed to oppose each other, said impurity-doped semiconductor extends beyond said source electrode and said drain electrode in a direction of extension of a length of said channel of said semiconductor layer and said i-type semiconductor extends beyond said impurity-doped semiconductor in said direction of extension of a length of said channel.