Patent ID: 11894436
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 7:
8. A CFET (complementary field effect transistor) structure comprising:
a substrate;
a first CFET formed above the substrate;
a second CFET formed above the substrate;
a third CFET formed above the substrate; and
a fourth CFET formed above the substrate;
wherein:
the first CFET comprises a top FET and a bottom FET, each of the top FET and bottom FET comprising at least one nanosheet channel;
a gate affiliated with the first CFET and the second CFET devices comprising a continuous horizontal dielectric over the entire length of the gate;
the top FET of each stacked FET comprises a first polarity;
the bottom FET of each stacked FET comprises a second polarity;
the top FET of the first CFET comprises a first work function metal;
the top FET of the second CFET comprises a second work function metal;
the top FET of the third CFET comprises a third work function metal; and
the top FET of the fourth CFET comprises a fourth work function metal.