Patent ID: 7339189
Filing Date: 2008-03-04
Classification: H01L

Abstract:
1. A substrate for a semiconductor device comprising: a substrate; a thin film transistor that is provided on the substrate; a wiring line that is provided above the thin film transistor; an interlayer insulating film that electrically isolates the wiring line from at least a semiconductor layer of the thin film transistor, the interlayer insulating film being formed with a first hole extending in a longitudinal direction in plan view on a substrate surface, the interlayer insulating film being formed with a plurality of second holes passing through a bottom of the first hole to reach a surface of the semiconductor layer, the plurality of second holes being arranged within the first hole in plan view and in the longitudinal direction of the first hole; and a contact hole including the first hole and the plurality of second holes, the contact hole connecting the wiring line to the semiconductor layer through the interlayer insulating film.