发明名称 |
An improved circuit board. |
摘要 |
<p>A printed circuit board which is of such a construction that patterns of electrically conductive strips and/or pads of either standard or non-standard form can be readily provided comprises a rigid board 1 of which at least the major surfaces are of electrically insulating material, which has extending through the board a multiplicity of holes 2 arranged in a pattern of rows and columns and which carries on one or each of its major surfaces a multiplicity of annular metal islands 3 each bounding a hole in the board and discrete with respect to the other annular islands. The rigid board 1 may also carry on said one or each of its major surfaces supplementary metal islands 4 and 5 each positioned between and discrete with respect to annular islands bounding adjacent holes in the rigid board. A circuit of either a standard or non-standard pattern can be formed by electrically interconnecting selected adjacent metal islands 3, 4 and 5 with local deposits of material of high electrical conductivity in such a way as to bridge the gap between adjacent islands. The local deposits may be effected manually but are preferably effected automatically using a modified computer aided design plotter or an automatic fluid dispensing machine.</p> |
申请公布号 |
EP0329414(A2) |
申请公布日期 |
1989.08.23 |
申请号 |
EP19890301441 |
申请日期 |
1989.02.15 |
申请人 |
BICC PUBLIC LIMITED COMPANY |
发明人 |
LAWRENCE, HOWARD |
分类号 |
H05K1/02;H05K1/00;H05K1/11;H05K3/46;H05K3/00;H05K3/30;H05K3/32;H05K3/40 |
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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