Invention Grant
- Patent Title: Method for manufacturing multilayer printed circuit board
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Application No.: US17542706Application Date: 2021-12-06
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Publication No.: US12016119B2Publication Date: 2024-06-18
- Inventor: Cheng-Jia Li , Mei Yang
- Applicant: HongQiSheng Precision Electronics (QinHuangDao) Co., Ltd. , Avary Holding (Shenzhen) Co., Limited.
- Applicant Address: CN Qinhuangdao
- Assignee: HongQiSheng Precision Electronics (QinHuangDao) Co., Ltd.,Avary Holding (Shenzhen) Co., Limited.
- Current Assignee: HongQiSheng Precision Electronics (QinHuangDao) Co., Ltd.,Avary Holding (Shenzhen) Co., Limited.
- Current Assignee Address: CN Qinhuangdao; CN Shenzhen
- Agency: ScienBiziP, P.C.
- Priority: CN 2010321085.9 2020.04.22
- The original application number of the division: US16887463 2020.05.29
- Main IPC: H05K1/09
- IPC: H05K1/09 ; H05K1/11 ; H05K3/02 ; H05K3/46

Abstract:
A method for manufacturing such multilayer printed circuit board includes providing a metal laminated structure including a first type metal layer and a second type metal layer, pressing a patterned dry film layer and a protective film layer on two surfaces of the metal laminated structure, the dry film layer exposing the second type metal layer; etching the second type metal layer to form a first conductive circuit layer; etching a first type metal layer to form a second conductive circuit layer, the first conductive circuit layer and the second conductive circuit layer defining an inner circuit laminated structure; removing the dry film layer; and forming a first adding-layer circuit base board and a second adding-layer circuit base board on two surfaces of the inner laminated structure.
Public/Granted literature
- US20220095451A1 METHOD FOR MANUFACTURING MULTILAYER PRINTED CIRCUIT BOARD Public/Granted day:2022-03-24
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