Patent ID: 8263460
Filing Date: 2012-09-11
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, the method comprising: forming a device isolation region that defines an active region in a semiconductor substrate; etching the semiconductor substrate to form a gate region having a first recess and a second recess; depositing a conductive material over the gate region and within the first and second recesses; to form a including an active gate in the first recess and a dummy gate in the second recess; etching the conductive material provided in the second recess while preventing the conductive material provided in the first recess from being etched; etching the conductive material provided in the first and second recesses; and depositing an insulating film over the semiconductor substrate and the conductive material within the first and second recesses, wherein the conductive material in the first recess defines an active gate and the conductive material in the second recess defines a dummy gate.