Patent ID: 7704126
Filing Date: 2010-04-27
Classification: H01L

Abstract:
1. A method for producing a semiconductor wafer with front and back sides and a profiled edge, comprising the following steps, in the order given: selecting a target profile for the profiled edge; separating a semiconductor wafer from a crystal; producing an edge profile in an edge profile producing step by a first grinding of the edge to acquire a profile that is true to scale with respect to the target profile, wherein the first grinding is performed with a grinding tool with rough grit; machining at least one side of the wafer in a mechanical machining step, in which a thickness of the semiconductor wafer is reduced; and further machining the edge in an edge profile machining step by a second grinding of the edge to acquire the target profile, wherein the second grinding is performed with a grinding tool with fine grit and the edge is smoothed thereby; and etching and polishing the semiconductor wafer, wherein a chemical mechanical polishing of the edge is dispensed with after the edge profile machining step.