Printed circuits and base materials having low Z-axis thermal expansion
    46.
    发明公开
    Printed circuits and base materials having low Z-axis thermal expansion 失效
    具有低Z轴热膨胀的印刷电路和基材

    公开(公告)号:EP0460539A3

    公开(公告)日:1993-03-24

    申请号:EP91108904.3

    申请日:1991-05-31

    Inventor: Kohm, Thomas S.

    Abstract: A base material for printed wiring boards is formed by laminating together layers of prepregs of woven cloth impregnated with a thermosetting polymeric resin varnish. The varnish has an inorganic filler which is present in an amount sufficient to provide the base material with an average coefficient of thermal expansion along its Z-axis between 30°C and 270°C which is equal to or less than the coefficient of thermal expansion of copper from 30°C to 270°C plus the maximum elongation at 270°C of copper suitable for forming a conductive pattern on hole walls of printed wiring boards. Printed wiring boards manufactured on the base material by additive or subtractive processes are resistent to failure from thermal stress or thermal cycling.

    Abstract translation: 用于印刷线路板的基材通过将浸渍有热固性聚合物树脂清漆的机织布的预浸料层叠在一起而形成。 清漆具有无机填料,其量足以使基材具有在30℃至270℃之间的Z轴的平均热膨胀系数,其等于或小于热膨胀系数 的铜从30℃加热至270℃,加上在270℃的最大伸长率,适用于在印刷电路板的孔壁上形成导电图案。 通过添加或减色法在基材上制造的印刷电路板抵抗热应力或热循环失效。

    Printed circuits and base materials having low Z-axis thermal expansion
    49.
    发明公开
    Printed circuits and base materials having low Z-axis thermal expansion 失效
    Z-Achse的Gedruckte Schaltungen und Basismaterialien mit NiedrigerWärmeausdehnung。

    公开(公告)号:EP0460539A2

    公开(公告)日:1991-12-11

    申请号:EP91108904.3

    申请日:1991-05-31

    Inventor: Kohm, Thomas S.

    Abstract: A base material for printed wiring boards is formed by laminating together layers of prepregs of woven cloth impregnated with a thermosetting polymeric resin varnish. The varnish has an inorganic filler which is present in an amount sufficient to provide the base material with an average coefficient of thermal expansion along its Z-axis between 30°C and 270°C which is equal to or less than the coefficient of thermal expansion of copper from 30°C to 270°C plus the maximum elongation at 270°C of copper suitable for forming a conductive pattern on hole walls of printed wiring boards. Printed wiring boards manufactured on the base material by additive or subtractive processes are resistent to failure from thermal stress or thermal cycling.

    Abstract translation: 用于印刷线路板的基材通过将浸渍有热固性聚合物树脂清漆的机织布的预浸料层叠在一起而形成。 清漆具有无机填料,其量足以使基材具有在30℃至270℃之间的Z轴的平均热膨胀系数,其等于或小于热膨胀系数 的铜从30℃加热至270℃,加上在270℃的最大伸长率,适用于在印刷电路板的孔壁上形成导电图案。 通过添加或减色法在基材上制造的印刷电路板抵抗热应力或热循环失效。

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