Patent ID: 8268674
Filing Date: 2012-09-18
Classification: H01L,H05K

Abstract:
1. A method for manufacturing a semiconductor device, comprising: forming a lower-layer insulating film on a base plate; fixing, on the lower-layer insulating film, a plurality of semiconductor constituents each having a semiconductor substrate and a plurality of electrodes for external connection provided under the semiconductor substrate; forming an insulation layer on the lower-layer insulating film at peripheries of the semiconductor constituents and forming an upper-layer insulating film on the semiconductor constituents and the insulation layer; removing the base plate; forming lower-layer wirings connected with the electrodes for external connection of the semiconductor constituents under the lower-layer insulating film and forming upper-layer wirings on the upper-layer insulating film; and obtaining a plurality of semiconductor devices by cutting the lower-layer insulating film, the insulation layer, and the upper-layer insulating film between the semiconductor constituents; wherein forming the lower-layer insulating film on the base plate includes forming a lower-layer protection metal layer and a lower-layer metallic underlayer on the base plate, and forming the lower-layer insulating film on the lower-layer metallic underlayer; and wherein removing the base plate includes removing the lower-layer protection metal layer.