Printed circuit board
    7.
    发明公开
    Printed circuit board 失效
    印刷电路板

    公开(公告)号:EP0402546A2

    公开(公告)日:1990-12-19

    申请号:EP89306621.7

    申请日:1989-06-29

    Inventor: Durand, David

    Abstract: A method for producing a circuit board involves printing a U.V. curable ink onto a substrate in a desired circuit pattern and curing the ink by exposing it to a pulsed U.V. source or subjecting the circuit pattern prepared from a U.V. curable ink containing magnetite particles to a magnetic field to move the magnetite particles to the upper surface of the U.V. curable ink. Other embodiments include circuit boards made in accordance with these methods and the use of the U.V. curable ink as a shielding composition for enclosures housing electronic equipment.

    Abstract translation: 生产电路板的方法涉及印刷U.V. 以期望的电路图案将可固化油墨喷涂到基材上,并通过将油墨暴露于脉冲U.V. 源或制作从U.V.准备的电路图案。 将含有磁铁矿颗粒的可固化油墨转变成磁场以将磁铁矿颗粒移动到U.V.的上表面。 可固化油墨。 其他实施例包括根据这些方法制造的电路板以及U.V.的使用。 作为用于容纳电子设备的外壳的屏蔽组合物。

    Moisture resistant electrically conductive cements and method for the production and using same
    9.
    发明公开
    Moisture resistant electrically conductive cements and method for the production and using same 失效
    耐湿性导电水泥和用于制造和使用它们的方法

    公开(公告)号:EP1246206A2

    公开(公告)日:2002-10-02

    申请号:EP02012317.0

    申请日:1990-11-14

    Abstract: An electrically conductive cement which when used to bond electrically conductive mating surfaces provides substantially stable conductivity characteristics under high humidity conditions; comprised of a carrier that provides a volumetric shrinkage of more than about 6.8% (vol.) and a conductive filler including agglomerates, particles, powders, flakes, coated nickel particles, and coated glass spheres, having size and surface characteristics that maintain stable electrical contact by forming a moisture resistant contact with an electrical component lead. The carrier having a volumetric shrinkage between the uncured and cured states of greater than about 6.8% (vol) appears to effect a compaction of the filler particles causing the particles to be forced into enhanced electrical contact with the surfaces to be connected and to provide a measure of compaction between the particles themselves to enhance particle-to-particle conduction. The shrinkage of the polymeric carrier during curing places the interior particles under compression with sufficient force to urge the particles into engagement with one another as well as to cause the particles to penetrate non-conductive oxides that may be present on a component lead.

    Abstract translation: 导电水泥其中当用于粘合导电的配合表面提供高湿度条件下是基本上稳定的传导特性; 由载体的没有提供的大于约6.8%的体积收缩率(体积)和导电填料包括团聚颗粒,粉末,薄片,涂覆镍颗粒和涂覆的玻璃球,具有尺寸和表面特征做了保持稳定的电 通过形成具有在电气元件引线的耐潮接触。 具有大于约6.8%(体积)的未固化和固化状态之间的体积收缩的载体显示,以实现使颗粒填料粒子的压实被迫进入增强与所述表面电接触以连接,并提供一种 颗粒本身之间压实措施,以提高颗粒与颗粒的传导。 聚合物载体的压缩下固化场所内部的颗粒用足够的力时的收缩以促使颗粒进入彼此接合以及使颗粒穿透非导电氧化物也可存在于元件引线。

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