Patent ID: 6147311
Filing Date: 2000-11-14
Classification: H01L,H05K

Abstract:
A multilayer circuit board using an anisotropic electro-conductive adhesive layer, comprising a substrate on which a first circuit pattern if formed, a first anisotropic electro-conductive adhesive layer formed on a surface of the substrate on which the first circuit pattern is provided, consisting of a thermosetting or thermoplastic resin adhesive containing electro-conductive particles dispersed therein, and a second circuit pattern formed on the first anisotropic electro-conductive adhesive layer, a second anisotropic electro-conductive adhesive layer containing electro-conductive particles dispersed therein formed on a surface of the first anisotropic electro-conductive adhesive layer on which the second circuit pattern is formed, and a third circuit pattern formed on the second anisotropic electro-conductive adhesive layer, wherein an end of the second circuit pattern is curved into the first anisotropic electro-conductive adhesive layer to be closer to the substrate and electrically connected to the first circuit pattern via the electro-conductive particles in the first anisotropic electro-conductive adhesive layer, and further an end of the third circuit pattern is curved into the second anisotropic electro-conductive adhesive layer to be closer to the substrate and electrically connected to the second circuit pattern via the electro-conductive particles in the second anisotropic electro-conductive adhesive layer.