Patent ID: 7220646

Claim:
A method of forming a semiconductor device comprising: providing a layer of semiconductor material; forming with a first mask level a pair of spaced-apart field effect gate structures on a surface of a semiconductor layer, each structure including a first end portion facing the other gate structure; forming with a second mask level first and second spaced-apart source regions of a first conductivity type in the layer and between the pair of gate structures with a resulting region of the surface between the first and second spaced-apart source regions having a first area dimension; also forming with the second mask level a lightly doped body region of a second conductivity type in the layer and extending below the source regions; forming a more heavily doped region of the second conductivity type in a portion of the semiconductor layer having a surface with the first area dimension, said portion having a surface with an area dimension smaller than the first area dimension; and forming, prior to forming the more heavily doped region, a sidewall spacer over each source region and against one of the first end portions.