Patent ID: 11950413
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An integrated circuit (IC) comprising:
a semiconductor substrate comprising a first area and a second area;
a polysilicon gate formed in the first area, wherein the polysilicon gate comprises a polysilicon electrode and a gate dielectric layer between the polysilicon electrode and the semiconductor substrate;
a high-κ metal gate formed in the second area, wherein the high-κ metal gate comprises a metal electrode and a high-κ dielectric layer between the metal electrode and the semiconductor substrate; and
wherein the polysilicon electrode has a width that is greater than a width of the metal electrode;
the polysilicon gate is a high voltage gate having a threshold voltage higher than the high-κ metal gate;
the gate dielectric layer is thicker than the high-κ dielectric layer; and
upper surfaces of the polysilicon electrode and the metal electrode are coplanar.