Invention Grant
US08541281B1 Replacement gate process flow for highly scaled semiconductor devices
有权
用于高度缩放的半导体器件的替代栅极工艺流程
- Patent Title: Replacement gate process flow for highly scaled semiconductor devices
- Patent Title (中): 用于高度缩放的半导体器件的替代栅极工艺流程
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Application No.: US13588059Application Date: 2012-08-17
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Publication No.: US08541281B1Publication Date: 2013-09-24
- Inventor: Stephan Kronholz , Ines Becker
- Applicant: Stephan Kronholz , Ines Becker
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Williams, Morgan & Amerson, P.C.
- Main IPC: H01L21/8234
- IPC: H01L21/8234

Abstract:
A method disclosed herein includes forming sacrificial gate structures for a PFET and NFET transistor, removing the sacrificial gate structures and forming a replacement P-type gate structure for the PFET transistor and a replacement N-type gate structure for the NFET transistor, forming P-contact openings and N-contact openings in at least one layer of insulating material, wherein the P-contact openings expose portions of a P-active region and the N-contact openings expose portions of an N-active region, forming a masking layer that covers the exposed portions of the N-active region, performing an etching process though the P-contact openings in the layer of insulating material to define source/drain cavities in the P-active region proximate the replacement gate structure of the PFET transistor, and performing an epitaxial deposition process through the P-contact openings to form source/drain regions comprised of a semiconducting material in at least the source/drain cavities of the PFET transistor.
Information query
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