Invention Grant
- Patent Title: Uniform back side exposure of through-silicon vias
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Application No.: US16430814Application Date: 2019-06-04
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Publication No.: US10692733B2Publication Date: 2020-06-23
- Inventor: Jaspreet S. Gandhi , Wayne H. Huang
- Applicant: Micron Technology, Inc.
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Perkins Coie LLP
- Main IPC: H01L21/321
- IPC: H01L21/321 ; H01L21/768

Abstract:
Systems and methods for uniform back side exposure of through-silicon vias (TSVs) are disclosed. In one embodiment, a semiconductor device comprises a substrate having a front side with circuit elements formed thereon, and a back side opposite the front side. A TSV extends between the front side and the back side of the substrate, and a dummy feature is disposed over the back side of the substrate, the dummy feature laterally spaced apart from the TSV and substantially coplanar with the TSV. In another embodiment, a semiconductor device comprises a substrate having a TSV formed therethrough, with a control material disposed over the back side of the substrate, the TSV substantially coplanar with the control material.
Public/Granted literature
- US20190304799A1 UNIFORM BACK SIDE EXPOSURE OF THROUGH-SILICON VIAS Public/Granted day:2019-10-03
Information query
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