Patent ID: 8237761

Claim:
A method of manufacturing a semiconductor article having a compound semiconductor multilayer film formed on a semiconductor substrate, comprising the steps of: preparing a first structure comprising a first semiconductor substrate, a compound semiconductor multilayer film, and an etching sacrificial layer provided between the first semiconductor substrate and the compound semiconductor multilayer film, wherein a first groove is formed in the compound semiconductor multilayer film so as to expose the etching sacrificial layer, and wherein the first semiconductor substrate is a compound semiconductor substrate; preparing a second structure comprising a second semiconductor substrate and an insulating layer, wherein a second groove is formed so as to pass through the second semiconductor substrate; bonding the first and second structures so as to form a bonded member in which the first and second grooves are connected to each other; and bringing an etchant into contact with the etching sacrificial layer through the connected first and second grooves and thus etching the etching sacrificial layer to separate the first semiconductor substrate from the bonded member.