The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 2012
Filed:
Dec. 29, 2009
IL Cheol Rho, Icheon-si, KR;
Il Cheol Rho, Icheon-si, KR;
Hynix Semiconductor Inc., Icheon-si, KR;
Abstract
A method for fabricating a dual poly gate in a semiconductor device, comprising: forming a gate insulation layer and a polysilicon layer on a semiconductor substrate that defines a first region and a second region; implanting first and second conductive type impurity ions into the first region and the second region of the polysilicon layer, respectively; forming first and second conductive type polysilicon layer in the first and second regions, respectively, by annealing the semiconductor substrate; forming a barrier metal layer on the first and second conductive type polysilicon layers; forming an oxide layer that lowers resistance of a metal by an oxidation process; forming a metal layer and a hard mask layer on the oxide layer; and forming a first conductive type poly gate on the first region and a second conductive type poly gate on the second region by a patterning process.