Invention Grant
- Patent Title: Implementing backdrilling elimination utilizing via plug during electroplating
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Application No.: US15819289Application Date: 2017-11-21
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Publication No.: US10531576B2Publication Date: 2020-01-07
- Inventor: Matthew S. Doyle , Joseph Kuczynski , Phillip V. Mann , Kevin M. O'Connell
- 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
- Agent Joan Pennington
- Main IPC: H05K1/02
- IPC: H05K1/02 ; H05K1/11 ; H05K3/42 ; H05K3/00

Abstract:
A method and structure are provided for implementing enhanced via creation without creating a via barrel stub. The need to backdrill during printed circuit board (PCB) manufacturing is eliminated. After the vias have been drilled, but before plating, a via plug with a specialized geometry and including a capillary is inserted into each via to allow electroplating on only preferred wall surfaces of the vias. Then a board plating process of the PCB manufacturing is performed.
Public/Granted literature
- US20180084652A1 IMPLEMENTING BACKDRILLING ELIMINATION UTILIZING VIA PLUG DURING ELECTROPLATING Public/Granted day:2018-03-22
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