Abstract:
The invention relates to an electronic textile comprising a textile substrate having a substrate electrode, and an electronic component having a component electrode. The component electrode is in electrically conductive contact with the substrate electrode via a coupling layer having a directionally dependent conductance so as to preferentially allow an electrical current to flow between the substrate electrode and the component electrode. As the coupling layer does not have to be patterned to prevent the occurrence of parasitic electrical currents, the electrically conductive contact between the substrate electrode and the component electrode has an improved reliability.
Abstract:
The present invention provides a variety of interrelated methods of coating non-random and ordered arrays of particles, as well as films containing such arrays. The present invention also relates to the coated non-random and ordered arrays of particles and films prepared therefrom. The coated non-random and ordered arrays are obtained by the use of ferrofluid compositions which may be curable. The arrays and films may contain electrically-conductive particles useful in electronic applications for effecting contact between conductors.
Abstract:
An anisotropically conductive adhesive composition (10) for use in electrically connecting at least one conductive area (14) on one substrate (12) with at least one conductive area (20) on a second substrate (18). The composition (10) is comprised of a mixture of conductive particles and a nonconductive adhesive binder (26). The conductive particles are dispersed throughout the binder in a plurality of noncontiguous conductive units (24) such that, upon applying a layer (30) of the composition (10) over both the conductive and insulating areas (14, 16) on the substrate (12) and positioning in a conductive relationship and adhering said at least one conductive area (20) on the second substrate (18) with said at least one conductive area (14) on the first substrate (12), the units (24) establish electrical connection between the adhered conductive areas (14, 20) on the two substrates (12, 18). The units (24) are sufficiently spaced apart, however, to preclude electrical conductivity between adjacent areas on the same substrate. A method for electrically connecting conductive areas on two substrates by means of said anisotropically conductive adhesive composition (10) and products produced by said method are also disclosed.
Abstract:
An anisotropically electroconductive adhesive to be used for establishing electric connection between terminals (15) of, for example, an IC chip (14) and of a circuit pattern (17), at a low cost with high reliabilities both in the establishment of electric connection and in the insulation upon the connection without suffering from short-circuiting between circuit lines in the circuit and without causing any obstruction on the circuit, even when the terminals (15) or the circuit lines (17) are disposed at close intervals, which adhesive (10) comprises an electrically insulating adhesive matrix (13) and electroconductive particles (11,12) dispersed in the matrix (13), wherein the electroconductive particles (11,12) comprise at least two electroconductive particulate products of different average particle sizes and wherein each particle of both the particulate products (11,12) is coated with an electrically insulating resin insoluble in the insulating adhesive matrix (13).
Abstract:
L'invention concerne un procédé de formation d'une connexion électrique anisotrope entre des éléments conducteurs (22, 24) possédant une couche d'oxyde (28). Le procédé consiste à utiliser un adhésif (30) comportant des fibres de carbone (32) et des particules métalliques (34). Lorsqu'on applique une pression, les fibres de carbone (32) pénètrent dans la couche d'oxyde (28), tandis que les particules métalliques (34) se déforment de telle façon qu'une bonne connexion électrique se fasse entre les éléments de recouvrement (22, 24).
Abstract:
A process for electrically connecting circuits wherein at least one circuit (4) is provided on an insulating layer (3) and has a plurality of projecting electrodes (2) which are deformable under pressure in the circuit connecting operation, wherein an insulating adhesive having a volatile content of 0.5% or less by weight and comprising
(i) a liquid epoxy resin, (ii) a solid resin having one or more functional groups and (iii) a microcapsule type curing agent, in the form of a film (5) having a thickness of 50µm or less, is interposed between the circuits and is substantially cured after the projecting electrodes have been contacted with the opposing circuits by applying heat and pressure at the time of connection.