发明名称 |
PRINTED WIRING BOARD AND CIRCUIT DEVICE USING THE SAME |
摘要 |
[MEANS FOR SOLVING PROBLEMS] A method of manufacturing a printed wiring board is characterized in that a base metal layer is formed by depositing a base metal on at least one surface of an insulating film, a conductive metal layer is formed by depositing copper or a copper alloy, a surface metal layer formed through the above step is removed selectively by etching so as to form a wiring pattern, and the metal forming the base metal layer is treated with a treating liquid capable of dissolving/immobilizing the metal forming the base metal layer. A printed wiring board is characterized in that it comprises an insulating film and a wiring pattern formed on at least one surface of the insulating film, the wiring pattern comprises a base metal layer deposited on a surface of the insulating film and a conductive metal layer, the base metal layer constituting the wiring pattern is protruded widthwise more than the conductive metal layer constituting the wiring pattern. [EFFECT] Most of the metal forming the base metal layer is removed while the slight remaining metal is immobilized. Thus migration significantly hardly occurs and a highly reliable printed wiring board can be obtained. |
申请公布号 |
KR20070100428(A) |
申请公布日期 |
2007.10.10 |
申请号 |
KR20077022082 |
申请日期 |
2007.09.27 |
申请人 |
MITSUI MINING & SMELTING CO., LTD. |
发明人 |
KATAOKA TATSUO;AKASHI YOSHIKAZU;IGUCHI YUTAKA |
分类号 |
H05K1/02;H05K3/02;H05K3/06;H05K3/18;H05K3/38 |
主分类号 |
H05K1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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