Patent ID: 9362178
Filing Date: 2016-06-07
CPC Classification: H01L

Claim Text:
1. A method of fabricating a finFET semiconductor device, the method comprising: forming a plurality of semiconductor fins on a semiconductor substrate, at least one first semiconductor fin among the plurality of semiconductor fins including a first lower semiconductor portion and a first upper semiconductor portion, and at least one second semiconductor fin including a second lower semiconductor portion and a second upper semiconductor portion; etching the first lower semiconductor portion to form a first cavity having a first cavity height extending between the semiconductor substrate and a first upper semiconductor portion, and etching the second lower semiconductor portion to form a second cavity height extending between the semiconductor substrate and a second upper semiconductor portion, the second cavity height being different from the first cavity height; and filling the first cavity and the second cavity with an insulator material such that a first height of the first upper semiconductor portion is different than a second height of the second upper semiconductor portion.