Patent ID: 7123323

Claim:
A liquid crystal display device, comprising: a light shielding film formed on a pixel board; a first insulating film formed on said light shielding film; a semiconductor layer formed on said first insulating film; a second insulating film, serving as a gate insulating film, formed on said semiconductor layer and said first insulating film; and a gate line formed on said second insulating film, wherein said semiconductor layer comprises a source region, a drain region, a channel region and a lightly doped drain (LDD) region; and contact holes for connecting said gate line with said light shielding film that are formed on opposing sides of said channel region and said LDD region, wherein a part of said gate line is filled up in said contact holes, and long sides of said contact holes have a length equal to or greater than a total length of a longside of said channel region and said LDD region.