Patent ID: 6294019
Filing Date: 2001-09-25
Classification: H01L

Abstract:
A method of manufacturing a group III-V compound semiconductor wafer, comprising the following steps:a) providing a semiconductor substrate that comprises a first group III-V semiconductor compound and that has a flat major surface and a substrate peripheral edge having an arcuate sectional shape with an initial radius of curvature R;b) providing on said semiconductor substrate, a group III-V compound layer comprising a second group III-V semiconductor compound having a different composition than said first group III-V compound, so as to prepare a raw wafer including said layer on said substrate and having a raw wafer peripheral edge; andc) removing a portion of said raw wafer extending from said raw wafer peripheral edge radially inwardly toward a center of said wafer by a removal distance L, wherein said removal distance L is from 1 to 3 times said initial radius of curvature R (R.ltoreq.L.ltoreq.3R), so as to form a processed wafer having a processed wafer peripheral edge.