Patent ID: 11887894
Assignee: INFINEON TECHNOLOGIES AG
Field: Semiconductors (Electrical engineering)
Classification: CPC C  H | IPC H

Claim 17:
18. A method for forming a plurality of thin wide band gap semiconductor wafers, the method comprising:
depositing a first support layer comprising semiconductor material on a wide band gap semiconductor boule, the wide band gap semiconductor boule having a band gap larger than the band gap of silicon;
separating the wide band gap semiconductor boule along a first separating region to obtain a first thin wide band gap semiconductor wafer and a first remaining wide band gap semiconductor boule, the first thin wide band gap semiconductor wafer comprising the first support layer and a thin wide band gap semiconductor layer, a thickness of the wide band gap semiconductor boule being at least 2 times a thickness of the thin wide band gap semiconductor layer;
depositing a second support layer on the first remaining wide band gap semiconductor boule; and
separating the first remaining wide band gap semiconductor boule along a second separating region to obtain a second thin wide band gap semiconductor wafer and a second remaining wide band gap semiconductor boule, the second thin wide band gap semiconductor wafer comprising the second support layer and a thin wide band gap semiconductor layer.