Patent ID: 8912082
Filing Date: 2014-12-16
Classification: H01L,Y02E,Y02P

Abstract:
1. A method of manufacturing a workpiece comprising: applying a contact mask to a surface of a workpiece, said contact mask defining a plurality of apertures; implanting said workpiece with a first species through all of said apertures of said contact mask to form a plurality of first doped regions in said workpiece; amorphizing said workpiece during said implanting said first species to create a visual mark on said substrate; aligning a mask to said workpiece using said visual mark, said mask defining a plurality of apertures and being disposed a distance from said workpiece, wherein said mask is aligned so that said plurality of first doped regions cannot be seen through said apertures of said mask; implanting a second species through said apertures of said mask to form a plurality of second implanted regions in said workpiece; and removing said contact mask from said surface.