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United States Patent 3,462,349 August 19, 1969 Method Of Forming Metal Contacts On Electrical Components Geza E. Gorgenyi Filed September 19, 1966 |
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Abstract of the DisclosureThe method for forming electrical contacts in the form of metallic bumps by electroplating such bumps through an opening in an electrically insulating film such as the photoresist, the electroplating action being discontinued and portions of the photoresist being removed around the bump formed at this point, after which the electroplating is continued which results in closing or filling in the gap which normally would occur under the bump |
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Citations [54]:2,834,723 05/1958 Robinson 2,934,479 04/1960 Deer 3,208,921 09/1965 Hill 3,342,927 09/1967 Kubik 3,375,418 03/1968 Garnache |