Patent ID: 9373694
Filing Date: 2016-06-21
CPC Classification: B82Y,H01L

Claim Text:
1. A transistor device comprising: a semiconductor substrate; a fin structure protruding from the semiconductor substrate and extending in a first direction, the fin structure having a first type impurity and including a source region disposed at one end and a drain region disposed at the opposite end and a channel region disposed between the source region and the drain region; and a gate structure overlying the channel region; wherein the fin structure has a rectangular cross-section bottom portion having a width and a height measured in a second direction perpendicular to the first direction and an arched cross-section top portion, wherein a maximum distance measured in the second direction between opposite sides of the arched cross-section top portion is equal to the width of the rectangular cross-section bottom portion, and wherein the source, drain, and channel regions each are doped with dopants of a same polarity and a same concentration.