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:
Sep. 17, 2002
Filed:
Oct. 06, 2000
Yasuhiro Suga, Kanuma, JP;
Motohide Takeichi, Kanuma, JP;
Sony Chemicals Corporation, Tokyo, JP;
Abstract
A connecting material for anisotropically electroconductive connection for bonding and connecting a semiconductor element having a plurality of electrodes recessed from the outer face of the passivation layer formed on the semiconductor element, on the one hand, with a substrate circuit board having a plurality of electrodes in a correspondingly confronted relation to the electrodes of the semiconductor element, on the other hand, which connecting material can afford to attain simultaneously a reliable mechanical bonding of the element with the circuit board and a secured electroconductive connection between the correspondingly confronted electrodes without suffering from damage of the passivation layer, even if the passivation layer is made of a resin. The connecting material ( ) is made up of an adhesive component ( ) of insulating property and electroconductive particles ( ), wherein each of the electroconductive particles ( ) is formed of a resin core particle ( ) coated with a metal layer ( ) and the average particle size d of the electroconductive particles ( ) is at least 1.5 times the recessed depth h of the electrodes ( ) from the outer face of the passivation layer ( ) of the semiconductor element ( ) and at most 0.5 time the distance s between the neighboring electrodes ( ).