Multilayer printed circuit board
    6.
    发明公开
    Multilayer printed circuit board 失效
    Mehrschichtige gedruckte Leiterplatte

    公开(公告)号:EP0814643A2

    公开(公告)日:1997-12-29

    申请号:EP97109609

    申请日:1997-06-12

    申请人: IBIDEN CO LTD

    摘要: A multilayer printed circuit board comprises a core substrate, multilayer wiring layers formed on the substrate by alternately laminating an interlaminar insulating layer and conductor circuit, and a group of solder pads having solder bumps planarly arranged on an outermost surface of the multilayer wiring layers, in which the solder pads located from first row to fifth row from an outer position of the solder pad group are constructed with flat pads connected to conductor pattern located on the outermost surface and solder bumps formed on the surfaces of the pads, while the solder pad group other than these solder pads are constructed with viaholes connected to flat innerlayer pad group located in an inner layer and solder bumps formed in recess portions of the viaholes, and the solder pads located from first row to fifth row from an outer position of the innerlayer pad group are constructed with flat pads connected to conductor patterns in the same layer as the innerlayer pad group, while the innerlayer pad groups other than the pads are constituted with flat pads connected to a further innerlayer flat pad group located inward the above innerlayer through viaholes.

    摘要翻译: 多层印刷电路板包括芯基板,通过交替层叠层间绝缘层和导体电路而形成在基板上的多层布线层,以及一组焊料凸块,其平坦地布置在多层布线层的最外表面上, 其中焊盘从焊料焊盘组的外部位置位于第一行至第五行的焊盘被构造为连接到位于最外表面上的导体图案的平坦焊盘和形成在焊盘表面上的焊料凸块,而焊盘组 除了这些焊盘之外,构成了连接到位于内层中的平坦内层焊盘组的通孔和形成在通孔的凹部中的焊料凸块以及从内层焊盘的外部位置位于第一行至第五行的焊盘 在与内层垫组相同的层中的导体图案上连接有平垫, 而除了焊盘之外的内层焊盘组由通过通孔连接到位于上层内层的另一内层平垫组的平垫组成。