×

Tri-gate devices and methods of fabrication

  • US 7,358,121 B2
  • Filed: 08/23/2002
  • Issued: 04/15/2008
  • Est. Priority Date: 08/23/2002
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of forming a transistor comprising:

  • forming a semiconductor body having a top surface and laterally opposite sidewalls on a substrate;

    forming a continuous gate dielectric on said top surface of said semiconductor body and on said laterally opposite sidewalls of said semiconductor body;

    forming a gate electrode on said gate dielectric on said top surface of said semiconductor body and adjacent to said gate dielectric on said laterally opposite sidewalls of said semiconductor body, the gate electrode having laterally opposite sidewalls that run perpendicular to the laterally opposite sidewalls of the semiconductor body, and wherein the gate electrode provides a first gate adjacent to the top surface of the semiconductor body, a second gate adjacent to one of the laterally opposite sidewalls of the semiconductor body, and a third gate adjacent to the other of the laterally opposite sidewalls of the semiconductor body;

    forming a sidewall spacer on each of the laterally opposite sidewalls of said gate electrode; and

    forming a semiconductor film on and around said semiconductor body and adjacent to said sidewall spacers.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×