Invention Grant
- Patent Title: Low aspect ratio interconnect
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Application No.: US16250351Application Date: 2019-01-17
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Publication No.: US10672707B2Publication Date: 2020-06-02
- Inventor: Benjamin D. Briggs , Elbert E. Huang , Raghuveer R. Patlolla , Cornelius Brown Peethala , David L. Rath , Chih-Chao Yang
- Applicant: TESSERA, INC.
- Applicant Address: US CA San Jose
- Assignee: Tessera, Inc.
- Current Assignee: Tessera, Inc.
- Current Assignee Address: US CA San Jose
- Main IPC: H01L23/528
- IPC: H01L23/528 ; H01L23/522 ; H01L23/532 ; H01L21/768

Abstract:
A low aspect ratio interconnect is provided and includes a metallization layer, a liner and a metallic interconnect. The metallization layer includes bottommost and uppermost surfaces. The uppermost surface has a maximum post-deposition height from the bottommost surface at first metallization layer portions. The metallization layer defines a trench at second metallization layer portions. The liner includes is disposed to line the trench and includes liner sidewalls that have terminal edges that extend to the maximum post-deposition height and lie coplanar with the uppermost surface at the first metallization layer portions. The metallic interconnect is disposed on the liner to fill a trench remainder and has an uppermost interconnect surface that extends to the maximum post-deposition height and lies coplanar with the uppermost surface at the first metallization layer portions.
Public/Granted literature
- US20190148296A1 LOW ASPECT RATIO INTERCONNECT Public/Granted day:2019-05-16
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