MULTILAYER WIRING SUBSTRATE AND MANUFACTURING METHOD OF MULTILAYER WIRING SUBSTRATE
    41.
    发明申请
    MULTILAYER WIRING SUBSTRATE AND MANUFACTURING METHOD OF MULTILAYER WIRING SUBSTRATE 失效
    多层布线基板和多层布线基板的制造方法

    公开(公告)号:US20110278051A1

    公开(公告)日:2011-11-17

    申请号:US13143490

    申请日:2011-02-22

    IPC分类号: H05K1/09

    摘要: A multilayer wiring board includes an insulating resin layer, wirings laid on their respective opposite surfaces of the insulating resin layer, and a via-hole conductor for electrically connecting the wirings. The via-hole conductor includes metal and resin portions. The metal portion includes first metal regions including a joined unit made of copper particles for connecting the wirings, second metal regions mainly composed of, for example, tin, a tin-copper alloy, or a tin-copper intermetallic compound, and third metal regions mainly composed of bismuth and in contact with the second metal regions. The copper particles forming the joined unit are in plane contact with one another to form plane contact portions, and the second metal regions at least partially are in contact with the first metal regions.

    摘要翻译: 多层布线板包括绝缘树脂层,布置在其绝缘树脂层的相应相对表面上的布线,以及用于电连接布线的通孔导体。 通孔导体包括金属和树脂部分。 金属部分包括第一金属区域,其包括由用于连接布线的铜颗粒形成的接合单元,主要由例如锡,锡 - 铜合金或锡 - 铜金属间化合物构成的第二金属区域和第三金属区域 主要由铋组成并与第二金属区域接触。 形成接合单元的铜粒子彼此平面接触以形成平面接触部分,并且第二金属区域至少部分地与第一金属区域接触。