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US 5,851,644 AGranted
Films and coatings having anisotropic conductive pathways therein
AssigneeLoctite (Ireland) Limited
InventorsCiaran B. McArdle, Joseph Burke
Life of this patent
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AssigneeLoctite (Ireland) Limited
InventorsCiaran B. McArdle, Joseph Burke
Estimating the term…
An anisotropically-conductive film or a substrate having a surface coated with an anisotropically-conductive coating, said film or coating being formed by solidifying a composition comprising (i) a solidifiable ferrofluid composition, the ferrofluid comprising a colloidal suspension of ferromagnetic particles in a non-magnetic carrier, and (ii) a plurality of electrically-conductive particles, dispersed in the ferrofluid, the electrically-conductive particles having been arrayed in a non-random pattern by application of a substantially uniform magnetic field to the composition in a liquid state and having been locked in position by solidification of the composition. The composition is solidified in an A-stage, usually involving a primary cure. In end-use application of the film or coating, the composition usually undergoes a B-stage or secondary cure. The film or coated substrate is an article of manufacture for bonding conductors in the electronics industry.
An anisotropically-conductive film or a substrate having a surface coated with an anisotropically-conductive coating, said film or coating having been formed by solidifying a solidifiable ferrofluid composition, the solidifiable ferrofluid composition comprising
An anisotropically-conductive film or substrate coating formed by
A solid-form anisotropically-conductive film or a substrate having a surface coated with a solid-form anisotropically-conductive coating, said film or coating comprising a composition containing colloidal ferromagnetic particles and a plurality of electrically-conductive particles having an average particle size which is about 10 times or more than that of the ferromagnetic particles arrayed in the composition in a non-random pattern.
An anisotropically-conductive film or a substrate having a surface coated with an anisotropically-conductive coating, said film or coating having been formed by solidifying a solidifiable ferrofluid composition, the solidifiable ferrofluid composition comprising
Dependencies are inferred from the claim text.