Patent ID: 7767514
Filing Date: 2010-08-03
Classification: H01L

Abstract:
1. A method of implanting dopant into channel regions, comprising: providing a semiconductor substrate, the substrate having at least two channel regions defined therein, one of said at least two channel regions being a first channel region and another of the at least two channel regions being a second channel region; providing a mask which covers a first portion of the second channel region while leaving a second portion of the second channel region uncovered, the mask leaving an entirety of the first channel region uncovered; implanting dopant into the uncovered second portion of the second channel region and the uncovered first channel region; diffusing the dopant from the second portion of the second channel region into the first portion of the second channel region so that a concentration of the dopant is substantially the same throughout the second channel region; and providing gateline material over the semiconductor substrate, the gateline material being over the two channel regions.