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:
Oct. 11, 1977
Filed:
Dec. 18, 1975
Joseph M Shaheen, La Habra, CA (US);
John Simone, Stanton, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
A method for producing beam leads, i.e. electrical contacts, on flexible circuits or multilayer circuits for interconnecting devices is disclosed. The method consists of processing a metal foil to expose a beam lead interconnection pattern, plating the exposed pattern with metal, coating a base insulating layer with an adhesive, punching cavities in the adhesive coated insulating layer, engaging the coated side of the base insulating layer to the metal foil, and applying a cushioning material on the opposite side of the adhesive coated insulating layer. The metal foil and the insulating layer are then laminated causing the cushioning material to flow into the pre-punched cavities thereby providing a protective cushioning-type backing for the metal-plated beam lead interconnection pattern. The exposed metal foil is etched away, the photoresist is removed and the cushioning material is stripped off the insulating layer leaving beam leads extending over the cavity for a device which can have the beam leads connected to its contacts (pads).