Patent ID: 7524737

Claim:
A process for producing a semiconductor chip which has an epitaxially produced functional semiconductor layer sequence, the process comprising the following process steps: providing a growth substrate; epitaxially growing the functional semiconductor layer sequence on the growth substrate; forming a separating zone, which lies parallel to a main surface of the growth substrate, in the growth substrate by ion implantation, said ion implantation into the growth substrate occurring subsequent to the epitaxial growth and occurring through the functional semiconductor layer sequence; applying a handle substrate to the functional semiconductor layer sequence; and detaching a part of the growth substrate which is remote from the handle substrate as seen from the separating zone, along the separating zone; wherein the functional semiconductor layer sequence includes a radiation-emitting active layer which comprises In x Al y Ga 1−x−y N, where 0≦x≦1, 0≦y≦1 and x+y≦1.