- Patent Title: Vertical fin with a gate structure having a modified gate geometry
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Application No.: US16031376Application Date: 2018-07-10
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Publication No.: US10686048B2Publication Date: 2020-06-16
- Inventor: Kangguo Cheng , Peng Xu
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Tutunjian & Bitetto, P.C.
- Agent Vazken Alexanian
- Main IPC: H01L29/423
- IPC: H01L29/423 ; H01L29/66 ; H01L29/78 ; H01L21/02 ; H01L29/40 ; H01L29/49

Abstract:
A method of forming a gate structure with a modified gate geometry, including, forming two gate spacers and a dummy gate fill on a channel, wherein the dummy gate fill is between the two gate spacers, forming a stressed layer on the two gate spacers, wherein the stressed layer is on the surfaces of the gate spacers opposite the dummy gate fill, and wherein the stressed layer applies a tensile stress to the two gate spacers, and removing a portion of the dummy gate fill, wherein the tensile stress applied to the two gate spacers is no longer balanced by the dummy gate fill, such that each of the two gate spacers becomes inclined at an obtuse angle relative to a top surface of the remaining dummy gate fill.
Public/Granted literature
- US20180323271A1 VERTICAL FIN WITH A GATE STRUCTURE HAVING A MODIFIED GATE GEOMETRY Public/Granted day:2018-11-08
Information query
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