Invention Grant
- Patent Title: Semiconductor device manufacturing method
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Application No.: US17284820Application Date: 2019-10-18
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Publication No.: US11647593B2Publication Date: 2023-05-09
- Inventor: Kazuki Sasao , Katsushi Wada
- Applicant: Sony Interactive Entertainment Inc.
- Applicant Address: JP Tokyo
- Assignee: Sony Interactive Entertainment Inc.
- Current Assignee: Sony Interactive Entertainment Inc.
- Current Assignee Address: JP Tokyo
- Agent Matthew B. Dernier, Esq.
- Priority: JP 2018197714 2018.10.19
- International Application: PCT/JP2019/041097 2019.10.18
- International Announcement: WO2020/080525A 2020.04.23
- Date entered country: 2021-04-13
- Main IPC: H05K3/34
- IPC: H05K3/34 ; H02M3/00 ; H01L21/48

Abstract:
A printed circuit board has an in-pad via. In a first step, a component is mounted on a first surface of a printed circuit board. A screen to be used in a second step has openings at positions corresponding to those of a plurality of pads on a second surface and has a recess positioned to overlap an in-pad via. Solder cream is applied from above the screen, and the screen is removed. Then, a component is mounted on the second surface.
Public/Granted literature
- US20210345496A1 SEMICONDUCTOR DEVICE MANUFACTURING METHOD AND SCREEN Public/Granted day:2021-11-04
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