Invention Grant
- Patent Title: Inspection method
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Application No.: US17818410Application Date: 2022-08-09
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Publication No.: US12191213B2Publication Date: 2025-01-07
- Inventor: Naoko Yamamoto
- Applicant: DISCO CORPORATION
- Applicant Address: JP Tokyo
- Assignee: DISCO CORPORATION
- Current Assignee: DISCO CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Greer Burns & Crain Ltd.
- Priority: JP2021-140401 20210830
- Main IPC: H01L21/78
- IPC: H01L21/78 ; H01L21/66 ; H01L23/544

Abstract:
An inspection method for a divided wafer includes a wafer lamination step of stacking a transfer wafer on top of a wafer that has been divided into a plurality of chips, a particle transfer step of, after the wafer lamination step is carried out, positioning the transfer wafer on a lower side and the divided wafer on an upper side and applying a vibration to the wafer stacked on the transfer wafer, to drop particles adhering to side surfaces of the chips onto the transfer wafer, and an inspection step of, after the particle transfer step is carried out, inspecting the particles on the transfer wafer.
Public/Granted literature
- US20230061146A1 INSPECTION METHOD Public/Granted day:2023-03-02
Information query
IPC分类: