Patent ID: 6514830
Filing Date: 2003-02-04
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, the method comprising:providing a substrate having an active area, the active area comprising a first junction between a first source/drain region and a channel region and a second junction between a second source/drain region and the channel region, the first source/drain region and the second source/drain region separated by the channel region of a predetermined width, the channel region having opposing ends not abutting either of the source/drain regions; providing a field implant blocking mask over the first source/drain region and extending over the channel region, the field implant blocking mask having a pair of angled notches at the opposing ends of the channel region, each angled notch extending towards the center of the channel region a predetermined distance from the opposing ends of the channel region to form the ends of the angled notches, each angled notch being angled with respect to the first junction; and implanting impurities to form a field implant region in the substrate.