The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 1994
Filed:
Dec. 10, 1992
Applicant:
Inventors:
Russell T White, Jr, Conklin, NY (US);
Robert E Ruane, Endicott, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ;
U.S. Cl.
CPC ...
427554 ; 427 96 ; 427 98 ; 427123 ; 427124 ; 427555 ; 29885 ; 20415715 ; 361794 ;
Abstract
A method for forming electrical interconnections in vias is provided by laser drilling vias in a composite that contains at least two circuitized organic polymeric substrates superimposed upon each other. The laser drilling causes metallic circuit lines contained within each substrate to melt and form a fused mass protruding a short distance out of the side of the drilled vias. Next, the drilled vias are plated with a conductive metal to thereby provide the interconnections.