Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1988-12-21
1990-06-19
Ryan, Patrick
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
428192, 428209, 4284111, 428457, 428901, 174266, 361397, B32B 300
Patent
active
049352849
ABSTRACT:
A circuit substrate includes upper and lower plastic layers molded to upper and lower surfaces of a metal member without the use of bonding agent, with integral columns of plastic material extending through holes of the metal member and along peripheral edges thereof joining the plastic layers together at a plurality of locations. Circuit paths are plated onto major surfaces of the plastic layers. Certain circuit paths are electrically connected by plated via holes to the embedded metal layer, with a pair of column joints adjacent each plated via hole joining the plastic layers thereat to prevent local delamination from the metal layer during handling and preventing microcracks in the plating material. Plated through-holes joining opposed circuit paths and the embedded metal layer similarly have a pair of adjacent column joints. Electrically isolated plated through-holes extend through larger diameter holes in the embedded metal layer, with the plastic walls serving as column joints. One example of such a circuit substrate is a paddle board for use in a connector for ribbon cable. Another example includes a pair of metal layers for power bussing.
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AMP Incorporated
Ness Anton P.
Ryan Patrick
LandOfFree
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