Patent ID: 7110059

Claim:
An active matrix display device comprising: a substrate; a thin film transistor formed over the substrate, said thin film transistor comprising an active layer, a gate insulating film adjacent to the active layer and a gate electrode adjacent to the gate insulating film; a gate line formed over said substrate and electrically connected to said gate electrode of the thin film transistor; a first insulating film formed over said thin film transistor and said gate line; a source line formed over said first insulating film and electrically connected to a source region of said active layer, said source line extending across said gate line; a second insulating film formed over said source line; a black matrix formed over said second insulating film; a conductive layer formed on a same layer as said black matrix; a third insulating film formed over said black matrix and said conductive layer; and a pixel electrode formed over said third insulating film and electrically connected to a drain region of the active layer through at least said conductive layer, wherein said black matrix is overlapped with a periphery of said pixel electrode at least partly, and said black matrix covers said source line.