Patent ID: 6639266
Filing Date: 2003-10-28
Classification: H01L

Abstract:
A method of forming a semiconductor container structure, comprising:forming a container hole in an insulating layer, wherein the container hole has a closed bottom, an open top and sidewalls extending between the closed bottom and open top; forming a container layer at least on a surface of the insulating layer and the sidewalls and closed bottom of the container hole; forming a resist layer overlying the container layer and filling the container hole, wherein the resist layer is of a positive resist type; selectively exposing the resist layer to energy capable of exposing the resist layer, thereby forming an exposed resist portion and an underexposed resist portion, wherein the underexposed resist portion fills at least a portion of the container hole; removing the exposed resist portion, thereby forming an uncovered portion of the container layer; modifying a removal selectivity of the uncovered portion of the container layer; and removing the uncovered portion of the container layer using a non-mechanical technique.