B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 3/28 (2006.01) H01L 21/48 (2006.01) H01L 23/36 (2006.01) H01L 23/367 (2006.01) H01L 23/373 (2006.01) H01L 23/40 (2006.01)
Patent
CA 2140311
A controlled oxygen content copper clad laminate product and process. In accordance with one aspect of the present invention, there is provided a laminate having a first layer of oxygen-free copper joined to a second layer of oxygen-rich copper by the steps of (i) cladding the first layer to the second layer at a relatively low speed to minimize rolling friction, (ii) finish rolling the laminate to substantially increase its thickness tolerance, (iii) slitting the laminate to increase its width tolerance, (iv) profiling a groove at a selected location in the laminate, (v) finish slitting a plurality of ribbons from the laminate, (vi) tension leveling the laminate to straighten and flatten its shape, (vii) stamping the laminate into sections each of a selected configuration, (viii) cleaning laminate surfaces, and (ix) direct bonding the laminate to a substrate material such that the first layer is annealed to the second.
Mead Charles R.
Mennucci Joseph P.
Brush Wellman Inc.
Smart & Biggar
LandOfFree
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