Patent ID: 7232744
Filing Date: 2007-06-19
Classification: H01J,H01L,Y10S

Abstract:
1. A method for implanting a dopant in a substrate, comprising: tilting a substrate located on or over an implant platen about an axis in a first direction with respect to an implant source, wherein the substrate has one or more patterned gate structures located thereover; implanting a portion of an implant dose within the substrate and below the one or more patterned gate structures, the substrate tilted in the first direction; tilting the substrate having already been tilted in the first direction about the axis in a second opposite direction; implanting at least a portion of the implant dose within the substrate and below the one or more patterned gate structures, the substrate tilted in the second opposite direction; rotating the substrate by about 90 degrees from its original position after implanting at least a portion of the implant dose within the substrate tilted in the second opposite direction; tilting the rotated substrate about the axis a second time in the first direction; implanting a portion of the implant dose within the substrate and below the one or more patterned gate structures, the substrate tilted in the first direction the second time; tilting the substrate having already been tilted a second time in the first direction about the axis a second time in the second opposite direction; and implanting a remaining portion of the implant dose within the substrate and below the one or more patterned gate structures, the substrate tilted in the second opposite direction the second time.