Patent ID: 7626648

Claim:
A pixel circuit substrate comprising: a substrate; a thin film transistor formed on said substrate; a first interlayer insulating film comprising an inorganic material at least in source and drain regions of said thin film transistor, said first interlayer insulating film having a contact hole formed in an area immediately above said source and drain regions of said thin film transistor; a wiring layer which arranged on said first interlayer insulating film, extending to an inner wall and a bottom surface of said contact hole, the wiring layer being connected to said source and drain regions, a top surface of the wiring layer having a recess reflecting a shape of said contact hole; a second interlayer insulating film comprising a laminate of inorganic material, formed on said wiring layer and embedded in said recess, the second interlayer insulating film being a laminate to have a uniformly flat top surface in an area immediately above said thin film transistor including said source and drain regions; and a storage capacitor on said second interlayer insulating film disposed in said area immediately above said thin film transistor.