Method for making a complementary metal gate electrode technology
First Claim
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1. A method of forming a circuit device, comprising:
- forming a gate dielectric overlying a region of a substrate;
depositing a metal layer over the gate dielectric; and
modifying the Fermi level of the metal layer.
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Abstract
A method for making a circuit device that includes a first transistor having a first metal gate electrode overlying a first gate dielectric on a first area of a semiconductor substrate. The first gate electrode has a work function corresponding to the work function of one of P-type silicon and N-type silicon. The circuit device also includes a second transistor coupled to the first transistor. The second transistor has a second metal gate electrode over a second gate dielectric on a second area of the semiconductor substrate. The second gate metal gate electrode has a work function corresponding to the work function of the other one of P-type silicon and N-type silicon.
166 Citations
13 Claims
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1. A method of forming a circuit device, comprising:
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forming a gate dielectric overlying a region of a substrate; depositing a metal layer over the gate dielectric; and modifying the Fermi level of the metal layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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