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:
Jun. 18, 1991
Filed:
Nov. 14, 1988
Satoshi Suzuki, Tokyo, JP;
Osamu Kuwabara, Tokyo, JP;
Jiro Muto, Tokyo, JP;
Eiichi Shinozaki, Tokyo, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A bonding structure and a bonding method for connecting an IC unit having an insulating sheet to connecting terminals arranged on a substrate. The insulating sheet has an elongated opening which is formed along one side of said insulating sheet and has on its one surface a plurality of conductive metal leads adhered thereto which stretch over the elongated opening. Portions of the metal leads which stretch over the elongated opening are solder-plated to serve as connecting portions. The connecting portions of the metal leads are heated and pressed into the opening with use of a heat-pressing head which has a width narrower than the opening, thereby being soldered to the connecting terminals. The metal lead is formed with inclined parts at its positions corresponding to both sides of the portion depressed by the heat-pressing head and solder pools are formed between the inclined parts and the connecting terminals. A bonding structure of high efficiency and high reliability is achieved for bonding IC unit with fine-pitch connecting-leads.