Metal-clad laminate construction
AssigneeGeneral Electric Company
InventorsRobert W. Green, Delton A. Grey, Jr.
Life of this patent
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Abstract
A metal-clad laminate having special utility in the production of high resolution printed circuit patterns and preparation of the laminate are described. The laminate preferably comprises a resin-bonded, glass-reinforced substrate, a layer of coupling agent covering and bonded to a major surface of the substrate, a layer of ultra-thin copper adjacent the layer of coupling agent, and a composite bonding layer disposed between the copper layer and the layer of coupling agent. The composite bonding layer comprises copper alloyed with at least one non-copper metal and oxide material of the non-copper metal.
Claims15
A metal-clad laminate comprising a substrate, an interacted coupling agent layer extending over and bonded to a major surface of said substrate, a layer of ultra-thin copper adjacent said layer of interacted coupling agent and a composite bonding layer interconnecting said copper layer and said interacted coupling agent layer, said composite bonding layer being substantially free of copper oxide and comprising regions of copper alloyed with a second metal and oxide of said second metal.
The method of making a copper-clad laminate comprising the steps of:
- (a) maintaining a carrier sheet with the temperature of a major surface thereof in a preselected temperature range while forming a copper film on said major surface by vapor depositing copper directly thereon,
- (b) depositing a layer of an oxide material over said copper film under conditions of temperature and pressure substantially precluding the formation of copper oxide, said oxide material comprising an oxide of a non-copper metal,
- (c) coating said oxide material layer with a solution containing coupling agent,
- (d) drying said coupling agent and
- (e) laminating the resulting assembly to a major surface of a substrate at elevated temperature and pressure, said substrate major surface having binding sites available for said coupling agent.
Dependencies are inferred from the claim text.