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. 09, 1994
Filed:
Feb. 26, 1993
Matsushita Electric Industrial Co. Ltd., Osaka, JP;
Abstract
The present invention relates to an electronic components mounting/connecting package characterized by using bump electrodes to connect electronic components such as semiconductors and the like with patterning electrodes of a circuit board. In order to prevent deterioration in connecting reliability due to deformation and the like of semiconductors and circuit boards, it is necessary to have some elasticity incorporated with bump electrodes. The composition of bump electrodes disclosed by the present invention is to have resin particles dispersed to high density in the metallic bump electrodes. According to this composition, even when there are some variations of distribution in circuit board warp and bump electrode height, it has become possible to absorb the variations through elasticity presented by the bump electrodes and to perform a low strain connection with a resultant enhancement in connecting reliability at high temperature.