ADHESIVE AGENT, AND METHOD FOR CONNECTING ELECTRONIC COMPONENT

    公开(公告)号:US20190085211A1

    公开(公告)日:2019-03-21

    申请号:US16189165

    申请日:2018-11-13

    Abstract: Provided are an adhesive agent capable of providing sufficient electrical continuity to a substrate to which a preflux treatment has been applied and a method for connecting electronic components. There is used an adhesive agent comprising a (meth)acrylate having an epoxy group in one molecule and a radical polymerization initiator having a one minute half-life temperature of 110 degrees C. or more. A surplus adhesive agent component between terminals flows, whereby an imidazole component in a preflux, the component binding to an epoxy group of an epoxy group-containing acrylate, is drawn out thereby to be removed from a surface of the terminal.

    METHOD FOR MANUFACTURING SMART CARD, SMART CARD, AND CONDUCTIVE PARTICLE-CONTAINING HOT-MELT ADHESIVE SHEET

    公开(公告)号:US20220363953A1

    公开(公告)日:2022-11-17

    申请号:US17623928

    申请日:2021-06-03

    Abstract: A method for manufacturing a smart card capable of achieving excellent connection reliability and bending resistance, a smart card, and a conductive particle-containing hot-melt adhesive sheet. A conductive particle-containing hot-melt adhesive sheet containing solder particles of a non-eutectic alloy in a binder containing a crystalline polyamide having a carboxyl group is interposed between a card member and an IC chip and subjected to thermocompression bonding. The crystalline polyamide having a carboxyl group improves the solder wettability of the non-eutectic alloy, thereby achieving excellent connection reliability. This effect is considered to be a flux effect due to the carboxyl group present in the crystalline polyamide, and as a result, it is possible to prevent the decrease in the elastic modulus of the adhesive layer which would be caused by the addition of a flux compound and to achieve excellent bending resistance.

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