Sheet for flexible printed wiring board reinforcement, and flexible printed wiring board using the same
    25.
    发明专利
    Sheet for flexible printed wiring board reinforcement, and flexible printed wiring board using the same 审中-公开
    柔性印刷线路板加固板及使用其的柔性印刷线路板

    公开(公告)号:JP2010129964A

    公开(公告)日:2010-06-10

    申请号:JP2008306383

    申请日:2008-12-01

    Abstract: PROBLEM TO BE SOLVED: To provide a sheet for flexible printed wiring board reinforcement which has a thermal expansion coefficient close to the coefficient of a thermosetting polyimide film used as a substrate film for a flexible printed wiring board and metal foil such as copper foil laminated on the thermosetting polyimide film, is sufficiently reduced in thickness variation, superior in reflow heat resistance, superior in blister resistance, and can be manufactured at a low cost, and to provide a flexible printed wiring board using the same.
    SOLUTION: A sheet 2 for reinforcement for reinforcing a flexible printed wiring board 1 is used for flexible printed wiring board reinforcement which is obtained by extrusion-molding and biaxial stretching a composition containing a crystalline thermoplastic resin in a softening start temperature Tg of 120°C or higher and a fibrous inorganic filler, and has a thermal expansion rate of 5 to 30 ppm/K in either of MD and TD directions. The sheet for reinforcement is stuck on a predetermined place of the flexible printed wiring board to form a reinforcing layer of the flexible printed wiring board.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种柔性印刷线路板加强片,其热膨胀系数接近用作柔性印刷线路板的基底膜的热固性聚酰亚胺膜和铜等金属箔的系数 层压在热固性聚酰亚胺薄膜上的薄片的厚度变化充分降低,回流耐热性优异,耐起泡性优异,并且可以以低成本制造,并提供使用其的柔性印刷线路板。 解决方案:用于加强柔性印刷线路板1的加强用片材2用于柔性印刷线路板加强件,其通过挤出成型和双轴拉伸获得的含有结晶热塑性树脂的组合物在软化开始温度Tg 120℃以上的纤维状无机填料,MD方向和TD方向的热膨胀率为5〜30ppm / K。 用于加强的片材粘附在柔性印刷线路板的预定位置上以形成柔性印刷线路板的增强层。 版权所有(C)2010,JPO&INPIT

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