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:
Feb. 22, 1994
Filed:
Aug. 16, 1991
Leo M Higgins, III, Austin, TX (US);
Maurice S Karpman, Medford, MA (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
Deformation of TAB tapes due to temperature changes is prevented by thermo-mechanical leads. In one embodiment of the invention, a semiconductor device (30) includes an electronic component (31) and a TAB tape. The tape includes a carrier film (12) and electrical leads (20) formed on the carrier film. The electrical leads are electrically coupled to the electronic component. Also included on the carrier film are thermo-mechanical leads (32) which are formed in opposing regions of the carrier film, regions which are typically void of leads. The thermo-mechanical leads have approximately the same lead pitch as the electrical leads in order to provide a uniform distribution of stresses across the TAB tape upon exposure to varying temperatures.