Patent ID: 8481410
Filing Date: 2013-07-09
Classification: H01L

Abstract:
1. A method, comprising: providing a substrate, the substrate having a top surface; forming material layer 1 on the substrate top surface; patterning of the material layer 1 thereby defining a plurality of trenches and a plurality of patterned material structures; forming a common stack material in the plurality of trenches on the substrate top surface; masking a first masking material in a first portion of the plurality of trenches and on a first portion of the plurality of patterned material structures proximate the first portion of the plurality of trenches; forming a first channel material in a second portion of the plurality of trenches; removing the first masking material; masking a second masking material in a second portion of the plurality of trenches and on a second portion of the plurality of patterned material structures proximate the second portion of the plurality of trenches; forming a second channel material in the first portion of the plurality of trenches; removing the second masking material; and recessing the plurality of patterned material structures.