发明名称 |
Baseboard for printed circuit board |
摘要 |
A baseboard having through-holes for a printed circuit board which baseboard is made from a metal as a substrate, comprising at least one resin coat layer formed on the overall surface of the metal substrate including the inner wall surfaces of the through-holes and having, at the circumferential angular portions of the through-holes, a thickness larger than that on said upper and said lower surface of the metal substrate, and featured by its increased insulation characteristics at the circumferential angular portions of the through-holes.
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申请公布号 |
US4254172(A) |
申请公布日期 |
1981.03.03 |
申请号 |
US19790034146 |
申请日期 |
1979.04.27 |
申请人 |
HITACHI CHEMICAL CO., LTD. |
发明人 |
TAKAHASHI, HIROSHI;NAKAO, KIYOSHI;KATAGIRI, MASAAKI |
分类号 |
B05D1/18;H05K1/05;H05K3/42;H05K3/44;(IPC1-7):B05D5/12 |
主分类号 |
B05D1/18 |
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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