Invention Grant
- Patent Title: Replacement contacts for all-around contacts
- Patent Title (中): 全方位联系人的替换联系人
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Application No.: US13547142Application Date: 2012-07-12
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Publication No.: US08642403B1Publication Date: 2014-02-04
- Inventor: Guy M. Cohen , Michael A. Guillorn
- Applicant: Guy M. Cohen , Michael A. Guillorn
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Michael J. Chang, LLC
- Agent Louis J. Percello
- Main IPC: H01L21/335
- IPC: H01L21/335

Abstract:
In one aspect, a method of forming contacts to source and drain regions in a FET device includes the following steps. A patternable dielectric is deposited onto the device so as to surround each of the source and drain regions. The patternable dielectric is exposed to cross-link portions of the patternable dielectric that surround the source and drain regions. Uncross-linked portions of the patternable dielectric are selectively removed relative to the cross-linked portions of the patternable dielectric, wherein the cross-linked portions of the patternable dielectric form dummy contacts that surround the source and drain regions. A planarizing dielectric is deposited onto the device around the dummy contacts. The dummy contacts are selectively removed to form vias in the planarizing dielectric which are then filled with a metal(s) so as to form replacement contacts that surround the source and drain regions.
Public/Granted literature
- US20140017890A1 Replacement Contacts for All-Around Contacts Public/Granted day:2014-01-16
Information query
IPC分类: