Patent ID: 9054123
Filing Date: 2015-06-09
Classification: H01L

Abstract:
1. A method for forming a semiconductor device, comprising: providing a wafer comprising an upper surface and a plurality of semiconductor mesas extending to the upper surface, adjacent pairs of the semiconductor mesas of the plurality of semiconductor mesas being separated from each other by at least one of a trench extending from the upper surface into the wafer, and a non-semiconductor region arranged on a side-wall of the trench; forming a first support structure comprising a first material above the upper surface and adjoining the plurality of semiconductor mesas at the upper surface so that the adjacent pairs of the semiconductor mesas are bridged by the first support structure; forming a second support structure comprising a second material above the upper surface and adjoining the plurality of semiconductor mesas at the upper surface so that the adjacent pairs of the semiconductor mesas are bridged by the second support structure, the second material being different from the first material; removing the first support structure; and at least partly removing the second support structure.