04-01-2018 дата публикации
Номер: US20180006033A1
Принадлежит:
A semiconductor device comprises a first semiconductor fin arranged on a substrate, the first semiconductor fin having a first channel region, and a second semiconductor fin arranged on the substrate, the second semiconductor fin having a second channel region. A first gate stack is arranged on the first channel region. The first gate stack comprises a first metal layer arranged on the first channel region, a work function metal layer arranged on the first metal layer, and a work function metal arranged on the work function metal layer. A second gate stack is arranged on the second channel region, the second gate stack comprising a work function metal arranged on the second channel region. 1. A semiconductor device comprising:a first semiconductor fin arranged on a substrate, the first semiconductor fin having a first channel region;a second semiconductor fin arranged on the substrate, the second semiconductor fin having a second channel region; a first metal layer arranged on the first channel region;', 'a work function metal layer arranged on the first metal layer; and', 'another work function metal arranged on the work function metal layer; and, 'a first gate stack arranged on the first channel region, the first gate stack comprisinga second gate stack arranged on the second channel region, the second gate stack comprising a work function metal arranged on the second channel region.2. The device of claim 1 , wherein the first gate stack further comprises a sacrificial patterning layer arranged on the work function metal layer.3. The device of claim 1 , further comprising a third channel region.4. The device of claim 3 , further comprising a fourth channel region.5. The device of claim 4 , further comprising an interfacial layer on the first channel region claim 4 , the second channel region claim 4 , the third channel region claim 4 , and the fourth channel region.6. The device of claim 1 , wherein the substrate is doped.7. The device of claim 1 , wherein the ...
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