- 专利标题: Method of production of circuit board utilizing electroplating
- 专利标题(中): 电镀电路板生产方法
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申请号: US11396203申请日: 2006-03-30
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公开(公告)号: US07226807B2公开(公告)日: 2007-06-05
- 发明人: Hideyasu Okazawa , Yoshiki Takeda
- 申请人: Hideyasu Okazawa , Yoshiki Takeda
- 申请人地址: JP Nagano
- 专利权人: Shinko Electric Industries Co., Ltd.
- 当前专利权人: Shinko Electric Industries Co., Ltd.
- 当前专利权人地址: JP Nagano
- 代理机构: Morgan & Finnegan LLP
- 优先权: JP2005-106252 20050401
- 主分类号: H01L21/00
- IPC分类号: H01L21/00 ; H01L23/495
摘要:
A method of production of a circuit board utilizing electroplating which prevents signal reflection and noise due to unnecessary parts in the circuit patterns when electroplating to form circuit patterns on the board to thereby improve the electrical properties and realize higher density layout of the circuit patterns, including the steps of forming a first electroless plating layer and an overlying first plating resist on a metal foil-clad insulating board, feeding power to the first electroless plating layer to form a first electroplating layer over the first electroless plating layer in resist openings; removing the first plating resist; removing the exposed first electroless plating layer and metal foil to expose the insulating board; forming a second electroless plating layer over the exposed parts of the board and the circuit patterns; forming a second plating resist over that; removing the second electroless plating layer at the resist openings; feeding power to the second electroless plating layer under the second plating resist to form a second electroplating layer over the circuit patterns in the resist openings; removing the second plating resist; and removing the exposed second electroless plating layer.
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