Invention Publication
- Patent Title: METHOD TO RELEASE NANO SHEET AFTER NANO SHEET FIN RECESS
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Application No.: US17457686Application Date: 2021-12-06
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Publication No.: US20230178602A1Publication Date: 2023-06-08
- Inventor: CHANRO PARK , Kangguo Cheng , Ruilong Xie , JUNTAO LI , ChoongHyun Lee
- 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
- Main IPC: H01L29/06
- IPC: H01L29/06 ; H01L29/66 ; H01L29/78 ; H01L29/786

Abstract:
A method including forming a plurality of nanosheet layers on a substrate and forming a plurality of first sacrificial layers on the substrate, wherein the plurality of nanosheet layers and the plurality of first sacrificial layers are arranged in alternating layers, where the plurality of first sacrificial layers is comprised of a first material. Selectively removing the plurality of first sacrificial layers and forming a plurality of second sacrificial layers where the plurality of first sacrificial layers were removed, where the plurality of second sacrificial layers is comprised of a second material, where the first material and the second material are different. Recessing the plurality of second sacrificial layers at an even rate.
Information query
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