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    • 7. 发明授权
    • Multilayer printed wiring board with filled viahole structure
    • 多层印刷线路板,带有通孔结构
    • US08115111B2
    • 2012-02-14
    • US12646517
    • 2009-12-23
    • Seiji ShiraiKenichi ShimadaMotoo Asai
    • Seiji ShiraiKenichi ShimadaMotoo Asai
    • H05K1/11
    • H05K3/4661H05K3/108H05K3/381H05K3/382H05K3/421H05K3/423H05K2201/0129H05K2201/015H05K2201/0278H05K2201/09563H05K2201/096H05K2201/09745Y10T428/24273Y10T428/24322Y10T428/24917Y10T428/31681
    • A multilayer printed wiring board includes a multilayered structure having conductor circuit layers and interlaminar insulative layers, the interlaminar insulative layers including an outermost interlaminar insulative layer, the conductor circuit layers including an outermost conductor circuit layer formed over the outermost interlaminar insulative, a filled-viahole formed in the outermost interlaminar insulative layer and having one or more metal plating fillings and completely closing a hole formed through the outermost interlaminar insulative layer such that the metal plating of the filled-viahole extends out of the hole and forms a substantially flat surface, and solder bumps including a first solder bump formed on the substantially flat surface of the filled-viahole and a second solder bump formed on a surface portion in the outermost conductor circuit layer. The substantially flat surface of the filled-viahole is leveled substantially at the same height as the surface portion of the outermost conductor circuit layer.
    • 多层印刷线路板包括具有导体电路层和层间绝缘层的多层结构,所述层间绝缘层包括最外层间绝缘层,所述导体电路层包括形成在最外层间绝缘体上的最外导体电路层,填充通孔 形成在最外层间绝缘层中并且具有一个或多个金属电镀填充物并且完全闭合通过最外层间绝缘层形成的孔,使得填充通孔的金属镀层延伸出孔并形成基本平坦的表面,并且 焊料凸点包括形成在填充通孔的基本上平坦的表面上的第一焊料凸块和形成在最外导体电路层的表面部分上的第二焊料凸点。 填充通孔的基本上平坦的表面基本上与最外面的导体电路层的表面部分的高度平齐。