Patent ID: 7423321

Claim:
A double gate FinFET transistor device, comprising: a semiconductor substrate; a buried oxide layer on said semiconductor substrate, said buried oxide layer having a protrusive portion and a recess portion; a fin structure having two opposing sidewalls on said protrusive portion of said buried oxide, said fin structure being divided into a source region, a drain region, and a channel region located between said source and drain region; a gate dielectric layer on said two opposing sidewalls of said fin structure in said channel region; and a gate film including dopants, said gate film straddling on said fin structure in said channel region and extending to said recess portion of said buried oxide layer, wherein two surfaces of said two opposing sidewalls of said channel region of said fin structure extend smoothly to said buried oxide layer, such that said gate film along said two opposing sidewall of said channel region has a uniform dopant distribution.