Method for manufacturing dual gate in semiconductor device

Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate

Reexamination Certificate

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Details

C438S592000, C438S653000, C438S655000, C438S656000, C438S683000, C438S685000, C438S777000, C257SE21165, C257SE21168

Reexamination Certificate

active

07989281

ABSTRACT:
Provided is a method for manufacturing a dual gate in a semiconductor device. The method includes forming a gate insulating layer and a gate conductive layer on a semiconductor substrate, forming a diffusion barrier layer on the gate conductive layer, forming a barrier metal layer on the diffusion barrier layer, depositing a first gate metal layer on the barrier metal layer, forming a metal nitride barrier layer on a surface of the first gate metal layer by supplying nitrogen (N2) plasma on the first gate metal layer, forming a second gate metal layer on the metal nitride barrier layer, and forming a hard mask layer on the second gate metal layer.

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patent: 2005-116693 (2005-04-01), None
patent: 10-0744108 (2007-07-01), None

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