Multilayer printed wiring board
    95.
    发明授权
    Multilayer printed wiring board 有权
    多层印刷线路板

    公开(公告)号:US07489521B2

    公开(公告)日:2009-02-10

    申请号:US11778989

    申请日:2007-07-17

    Abstract: A multilayer printed wiring board (10) includes: a build-up layer (30) that is formed on a core substrate (20) and has a conductor pattern (32) disposed on an upper surface; a low elastic modulus layer (40) that is formed on the build-up layer (30); lands (52) that are disposed on an upper surface of the low elastic modulus layer (40) and connected via solder bumps (66) to a IC chip (70); and conductor posts (50) that pass through the low elastic modulus layer (40) and electrically connect lands (52) with conductor patterns (32). The conductor posts (50) have the aspect ratio Rasp (height/minimum diameter) of not less than 4 and the minimum diameter exceeding 30 μm, and the aspect ratio Rasp of external conductor posts 50a, which are positioned at external portions of the low elastic modulus layer (40), is greater than or equal to the aspect ratio Rasp of internal conductor posts (50b), which are positioned at internal portions of the low elastic modulus layer (40).

    Abstract translation: 多层印刷布线板(10)包括:形成在芯基板(20)上并具有布置在上表面上的导体图案(32)的堆积层(30) 形成在积层(30)上的低弹性模量层(40); 设置在低弹性模量层(40)的上表面并通过焊锡凸块(66)连接到IC芯片(70)的平台(52); 以及穿过低弹性模量层(40)并将焊盘(52)与导体图案(32)电连接的导体柱(50)。 导体柱50具有不小于4的纵横比Rasp(高度/最小直径)和最小直径超过30μm,并且外部导体柱50a的纵横比Rasp位于低的外部 弹性模量层(40)大于或等于位于低弹性模量层(40)的内部的内部导体柱(50b)的纵横比Rasp。

    Capacitor having adjustable capacitance, and printed wiring board having the same
    97.
    发明申请
    Capacitor having adjustable capacitance, and printed wiring board having the same 有权
    具有可调电容的电容器和具有其的印刷电路板

    公开(公告)号:US20080024953A1

    公开(公告)日:2008-01-31

    申请号:US11495668

    申请日:2006-07-31

    Abstract: The capacitance of a capacitor is adjusted by forming openings in one of a pair of electrodes of the capacitor, the openings having different sizes d1, d2, d3, wherein d1>d2>d3> . . . and being arranged in numbers n1, n2, n3, . . . , respectively; and sequentially filling a necessary number of the openings with an electroconductive material in descending order of the size so as to adjust the capacitance gradually with an increasing degree of precision. The resulting capacitor is mounted to a printed wiring board.

    Abstract translation: 通过在电容器的一对电极中的一个电极中形成开口来调节电容器的电容,开口具有不同的尺寸d 1,d 2,d 3,其中d 1> d 2> d 3>。 。 。 并且以n 1,n 2,n 3,...排列。 。 。 , 分别; 并按照大小的降序顺序地用导电材料填充必要数量的开口,以随着精度的增加逐渐调整电容。 所得到的电容器安装到印刷线路板上。

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