Invention Grant
- Patent Title: Via stub elimination by disrupting plating
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Application No.: US16273923Application Date: 2019-02-12
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Publication No.: US10674613B2Publication Date: 2020-06-02
- Inventor: Joseph Kuczynski , Bruce Chamberlin , Scott B. King , Matthew Kelly
- 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 Jared L. Montanaro
- Main IPC: H05K1/02
- IPC: H05K1/02 ; H05K1/03 ; H05K1/05 ; H05K1/11 ; H05K3/20 ; H05K3/42 ; H05K3/46

Abstract:
A stubless via in printed wiring board may comprise one or more core layers. At least one core layer may be circuitized by including a copper trace and at least two other core layers may include copper laminations. The stubless via may further comprise one or more prepreg layers. The prepreg layers may be alternatively stacked between the core layers. the stubless via may further comprise a via. the via may be drilled through each of the alternatively stacked prepreg layers and core layers, exposing internal portions of the prepreg layers and core layers drilled through.
Public/Granted literature
- US20190182967A1 VIA STUB ELIMINATION BY DISRUPTING PLATING Public/Granted day:2019-06-13
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