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:
Aug. 06, 1991
Filed:
Apr. 06, 1988
Yoshinobu Sugiyama, Tokyo, JP;
Shohei Sawada, Tokyo, JP;
Takashi Hinooka, Tokyo, JP;
Kaoru Yoshida, Tokyo, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A thin electronic calculator having a circuit board unit in which an IC pellet is directly mounted on a film board and allowing easy mass-production is provided. Metal foil leads each having one end and the other end radially extending from the one end and having a larger width than the one end are formed on the film board. The IC pellet is bonded to one end portions of the metal foil leads through bump electrodes. The circuit board unit is fixed to a wiring board by an anisotropically electrical conductive adhesive. The other end of each metal foil lead is electrically connected to a corresponding connecting terminal formed on the wiring board. An electronic component assembly constituted by the circuit board unit and the wiring board is received in upper and lower covers, and is adhered by adhesive islands deposited on the covers.