Integration scheme for using silicided dual work function...

Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – Insulated gate formation

Reexamination Certificate

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C438S656000, C257SE21203

Reexamination Certificate

active

10851750

ABSTRACT:
The present invention provides a method for manufacturing a semiconductor device and a method for manufacturing an integrated circuit including the semiconductor device. The method for manufacturing the semiconductor device, among other possible steps, includes forming a polysilicon gate electrode (250) over a substrate (210) and forming source/drain regions (610) in the substrate (210) proximate the polysilicon gate electrode (250). The method further includes forming a protective layer (710) over the source/drain regions (610) and the polysilicon gate electrode (250), then removing the protective layer (710) from over a top surface of the polysilicon gate electrode (250) while leaving the protective layer (710) over the source/drain regions (250). After the protective layer (710) has been removed from over the top surface of the polysilicon gate electrode (250), the polysilicon gate electrode (250) is silicided to form a silicided gate electrode (1310). The protective layer (710) is also removed from over the source/drain regions (610) and source/drain contact regions (1610) are formed.

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