Patent ID: 6440799
Filing Date: 2002-08-27
Classification: H01L

Abstract:
A method of implanting dopant into a semiconductor structure, comprising:providing a semiconductor structure comprising a first semiconductive material and a second semiconductive material over the first semiconductive material; the structure comprising a defined first region and a defined second region adjacent the first region; forming a photoresist mask over the first region and implanting a first dopant into at least one of the first and second semiconductive materials of the second region; the photoresist mask having a periphery at a first location of the semiconductor structure during the implanting of the first dopant; and after implanting the first dopant, shifting the photoresist mask periphery to a second location and subsequently implanting a second dopant into at least one of the first and second semiconductive materials of the second region while at least some of the photoresist mask remains over the first region.