Patent ID: 7459364
Filing Date: 2008-12-02
Classification: H01L,Y10S

Abstract:
1. A method of manufacturing a semiconductor device, comprising: forming a mask pattern on a substrate, the mask pattern including a first opening through which a first portion of the substrate is exposed; forming a trench by etching the first portion of the substrate; forming an isolation pattern filling up the first opening and the trench; forming a second opening by etching an upper portion of the mask pattern, so that the second opening is defined by the upper portion of the isolation pattern and a recessed mask pattern; partially removing the upper portion of the isolation pattern defining the second opening to thereby increase a size of the second opening; forming a third opening by etching the recessed mask pattern, a second portion of the substrate being exposed through the third opening; and forming a conductive layer on the second portion of the substrate and the isolation pattern to a thickness to fill up the second and the third openings.