Compositions – Electrically conductive or emissive compositions – Free metal containing
Reexamination Certificate
2005-04-20
2008-10-21
Kopec, Mark (Department: 1796)
Compositions
Electrically conductive or emissive compositions
Free metal containing
C252S514000
Reexamination Certificate
active
07438834
ABSTRACT:
The present invention relates to an anisotropic conductive adhesive comprising an anisotropic conductive adhesive combined with a crystalline polymer to realize anisotropic conductivity and PTC (Positive Temperature Coefficient) characteristics at the same time. The anisotropic conductive adhesive having PTC characteristics according to the present invention comprises an insulating adhesive component and a plurality of conductive particles dispersed in adhesive component, in which the insulating adhesive component comprises a crystalline polymer. Since the anisotropic conductive adhesive according to the present invention includes a crystalline polymer, when temperature rises and the volume expands, electrical resistance is rapidly increased, whereby current flow is intercepted resulting in blocking current, providing PTC characteristics acting as a switch. Thus, it shows circuit protection function as well. Accordingly, it is possible to intercept a circuit upon occurrence of excess current without using a separate element for circuit protection such as PTC thermistor.
REFERENCES:
patent: 4120828 (1978-10-01), Michalchik
patent: 6274852 (2001-08-01), Blok et al.
patent: 7001538 (2006-02-01), Lee et al.
patent: 2001/0028953 (2001-10-01), Bluem et al.
Ahn Woo Young
Chung Yoon Jae
Han Yong Seok
Jang Jong Yoon
Jeon Young Mi
DeMont & Breyer LLC
Kopec Mark
LG Cable Ltd.
LandOfFree
Anisotropic conductive adhesive having PTC characteristics does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anisotropic conductive adhesive having PTC characteristics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anisotropic conductive adhesive having PTC characteristics will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3989036