Patent ID: 8153511
Filing Date: 2012-04-10
Classification: B23K,H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising: forming a layer comprising a transistor over a substrate; forming a first insulating layer over the layer comprising the transistor; forming an opening in the first insulating layer; forming a conductive layer which is connected to one of a source region and a drain region of the transistor through the opening; forming a second insulating layer to cover the conductive layer; emitting a first laser beam selectively with an ablation process to cut off the first insulating layer, an insulating layer which is provided in the layer comprising the transistor, and the second insulating layer, and to form a groove in the substrate; cutting off the first insulating layer, the insulating layer which is provided in the layer including the transistor, the second insulating layer, and the substrate by directing a second laser beam into the groove; and sealing a laminated body including the substrate, the layer comprising the transistor, the first insulating layer, the conductive layer, and the second insulating layer using first and second films to sandwich the laminated body by melting each surface layer of the first and second films by heat treatment after the cutting off step.