PATENT COVER GRAPHIC |
United States Patent 3,469,953 September 30, 1969 Lead Frame Assembly For Semiconductor Devices Michael J. St. Clair William L. Keady Filed November 9, 1966 |
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Abstract of the DisclosureA layer of relatively soft conductive material is deposited longitudinally on a narry strip of flexible metal material. The strip is stamped to form a plurality of integrally connected lead frames with narrow lead portions, masked, etched to remove portions of soft conductive material, plated, and bonded to a substrate supporting tips of lead portions having a layer of soft conductive material. |
Figure descriptions: cover graphic |
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Citations [54]:2,812,270 11/1957 Alexander 3,171,137 03/1965 Ikeda 3,271,625 09/1966 Carraciolo 3,293,241 12/1966 Carroll 3,325,586 06/1967 Saddick |
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