Patent ID: 7384803

Claim:
A method of manufacturing a nitride semiconductor device, comprising: depositing a nitride semiconductor thin film onto a silicon carbide substrate to form a wafer; irradiating the nitride semiconductor thin film with an excitation light; generating luminescence in the deposited nitride semiconductor thin film in response to the irradiation with the excitation light, which generated luminescence corresponds to a defective part of the silicon carbide substrate; specifying a position of the defective part of the silicon carbide substrate based on the generated luminescence, including: detecting said luminescence, acquiring first information including information related to an intensity of said luminescence, and specifying an area in which the intensity of said luminescence is equal to or exceeds a reference value as said defective part based on said first information; processing the wafer to form a layered product; cutting the layered product at each predetermined device dimension to create a plurality of chips; and eliminating chips having the defective part, position of which is specified prior to processing the wafer to form the layered product.