Patent ID: 7446001

Claim:
A method of making a semiconductor device, comprising: forming a semiconductor layer, overlying an insulator layer, to create a first active region and a second active region, wherein the first active region is of a different height from the second active region, and wherein at least a portion of the first active region is lightly doped and at least a portion of the second active region is heavily doped; forming a gate structure over a top portion and sidewall portions of the first active region and over at least a portion of the second active region, wherein a drain region is located on a first side of the gate structure and a source region is located on a second side, opposite the first side, of the gate structure, and wherein a channel region is located between the drain region and the source region and along the top portion and sidewall portions of the first active region, adjacent the gate structure; and after forming the gate structure, removing a portion of the second active region from only the drain region to expose the insulator layer.