Patent ID: 6251734
Filing Date: 2001-06-26
Classification: H01L

Abstract:
A method of manufacturing semiconductor component comprising:providing a semiconductor substrate having a surface;etching two trenches into the surface of the semiconductor substrate;coating the two trenches with an electrically insulative layer;implanting a dopant through the electrically insulative layer and into the semiconductor substrate at bottoms of the two trenches;simultaneously filling the two trenches with a material that is undoped polysilicon after the implanting step wherein the material is undoped;removing the material from a first one of the two trenches and wherein the material from a second one of the two trenches is never completely removed;removing the electrically insulative layer from the first one of the two trenches after the step of removing the material; andfilling the first one of the two trenches with doped polysilicon after the step of removing the electrically insulative layer, wherein the first one of the two trenches is electrically coupled to the semiconductor substrate and wherein the second one of the two trenches is electrically insulated from the semiconductor substrate by the electrically insulative layer.