Patent ID: 7427549
Filing Date: 2008-09-23
Classification: B82Y,H01L

Abstract:
1. A method of forming a semiconductor device comprising: forming a structure comprising a first portion and a second portion, the first portion having a first height and the second portion having a second height, the first height is greater than the second height, wherein the first portion and the second portion are contiguous; forming a spacer adjacent a sidewall of the first portion and over a first top portion of the second portion, the spacer being of a first material; forming a second material over a second top portion of the second portion of the structure after the forming the spacer, the first material is etch selective with respect to the second material; exposing the first top portion of the second portion of the structure, wherein the exposing includes removing the spacer over the first top portion; removing material of the structure at a location of the first top portion to separate the first portion from the second portion at the location of the first top portion.