Patent ID: 8609513
Filing Date: 2013-12-17
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising the steps of: preparing a combined wafer in which a plurality of SiC substrates each made of silicon carbide single-crystal are arranged side by side when viewed in a planar view and main surfaces of said plurality of SiC substrates at one side are connected to each other by a supporting layer; fabricating a first intermediate wafer by forming an active layer on each of said SiC substrates of said combined wafer; fabricating a second intermediate wafer by forming a front-side electrode on said active layer of said first intermediate wafer; supporting said plurality of SiC substrates using an adhesive tape with said plurality of SiC substrates being arranged side by side when viewed in a planar view, by adhering to said adhesive tape a main surface of said second intermediate wafer on which said front-side electrode is formed; removing said supporting layer while supporting said plurality of SiC substrates of said second intermediate wafer using said adhesive tape with said plurality of SiC substrates being arranged side by side when viewed in a planar view; forming a backside electrode on the main surfaces of said SiC substrates exposed by the removal of said supporting layer; adhering an adhesive tape at the side thereof on which said backside electrode is formed, and removing said adhesive tape from the side thereof on which said front-side electrode is formed, so as to support said plurality of SiC substrates using said adhesive tape with said plurality of SiC substrates being arranged side by side when viewed in a planar view; and obtaining a plurality of semiconductor devices by cutting said SiC substrates in a thickness direction thereof while said SiC substrates are supported by said adhesive tape provided at the side on which said backside electrode is formed, with said SiC substrates being arranged side by side when viewed in a planar view.