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    • 61. 发明专利
    • Printed wiring board and printed circuit board
    • 印刷线路板和印刷电路板
    • JP2010062530A
    • 2010-03-18
    • JP2009145453
    • 2009-06-18
    • Canon Incキヤノン株式会社
    • HAYASHI YASUJI
    • H05K3/46
    • H05K1/116H01L23/49827H01L23/50H01L2924/0002H05K1/0265H05K2201/0969H05K2201/09727H05K2201/09745H05K2201/0979H05K2201/10734H01L2924/00
    • PROBLEM TO BE SOLVED: To prevent a current from being concentrated on a via at the farthest end, in a connection part for connecting power supply wires in different layers of a printed wiring board to each other through a via.
      SOLUTION: In this multilayer printed wiring board 1, a plurality of vias 4-7 that connect a power supply wire 2 in a first wiring layer with a power supply wire 3 in a second wiring layer are arranged in parallel to a direction along which a current flows. In order to prevent the current from being concentrated on the via 4 connected to the farthest end of the power supply wire 2 among the vias 4-7, a wiring part 8 between the via 4 and the via 5 is narrowed to increase resistance. A wiring part 9 that is narrowed is disposed similarly at the farthest end of the power supply wire 3 of the second wiring layer.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了防止电流集中在最远端的通孔上,在用于通过通孔将印刷电路板的不同层中的电源线连接的连接部分中。 解决方案:在该多层印刷电路板1中,将第一布线层中的电源线2与第二布线层中的电源线3连接的多个通孔4-7平行于方向 电流流过。 为了防止电流集中在通孔4-7中连接到电源线2的最远端的通孔4之间,通孔4和通路5之间的布线部分8变窄以增加电阻。 在第二布线层的电源线3的最远端处类似地配置变窄的配线部9。 版权所有(C)2010,JPO&INPIT