Invention Application
- Patent Title: BACK-SIDE WAFER MODIFICATION
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Application No.: US17095931Application Date: 2020-11-12
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Publication No.: US20220148927A1Publication Date: 2022-05-12
- Inventor: David Wolpert , DANIEL JAMES DECHENE , Lawrence A. Clevenger , Michael ROMAIN , SOMNATH GHOSH
- 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: H01L21/66
- IPC: H01L21/66 ; H01L21/67 ; H01L23/13 ; H01L23/14

Abstract:
A method can include obtaining characteristic data for a wafer. The characteristic data can correspond to the wafer in a processed state and can include a set of stress values of the wafer. The wafer can include a front side, a back side opposite the front side, and a set of regions. The set of stress values can include a first stress value corresponding to a first region. In the processed state, one or more front-side processes can be completed on the front side of the wafer. The method can include determining that the first stress value exceeds a stress threshold and generating a compensation map. The compensation map can identify one or more regions for forming one or more trenches. The method can include initiating, based on the compensation map, a formation of a first trench on the back side of the wafer in the first region.
Public/Granted literature
- US11830778B2 Back-side wafer modification Public/Granted day:2023-11-28
Information query
IPC分类: