Built-in-coil substrate
    24.
    发明授权
    Built-in-coil substrate 有权
    内置线圈基板

    公开(公告)号:US08410887B2

    公开(公告)日:2013-04-02

    申请号:US13602600

    申请日:2012-09-04

    Abstract: In a built-in-coil substrate, when viewed in perspective in a stacking direction in which insulating layers of a substrate body are stacked, mutually superposed second coil elements are located further inward than inner peripheries of mutually superposed first coil elements. A cavity is continuous between at least one of the second coil elements and one insulating layer that is in contact with the second coil element(s), and another insulating layer that opposes the second coil element(s) such that the second coil element(s) are exposed, and, when viewed in perspective in the stacking direction, the cavities have annular shapes and extend further inward than the outer peripheries of the mutually superposed first coil elements, there being an interval provided between the cavities and these outer peripheries, and further outward than the inner peripheries of the mutually superposed second coil elements.

    Abstract translation: 在内置线圈基板中,当层叠基板主体的绝缘层的层叠方向的立体图来看,相互重叠的第二线圈元件位于相互叠置的第一线圈元件的内周的内侧的位置的内侧。 在第二线圈元件中的至少一个和与第二线圈元件接触的一个绝缘层之间连续地形成空腔,以及与第二线圈元件相对的另一个绝缘层,使得第二线圈元件 并且当从层叠方向的角度看时,空腔具有环形形状,并且比相互重叠的第一线圈元件的外周更向内延伸,在空腔和这些外周之间设有间隔, 并且比相互叠置的第二线圈元件的内周更向外。

    Solder paste
    25.
    发明授权
    Solder paste 有权
    焊膏

    公开(公告)号:US08388724B2

    公开(公告)日:2013-03-05

    申请号:US12226653

    申请日:2007-04-23

    Abstract: High-temperature solders having a higher melting point than solder alloys used for soldering of printed circuit boards are used for internal bonding of electronic parts, but high-temperature solders which are free from Pb have not been developed. There exist high-temperature solders which comprises Sn balls and Cu balls and which perform bonding through the formation of an intermetallic compound without melting to form a single-phase structure, but they have poor wettability to the lands of a printed circuit board or electrodes of electronic parts and have not been used.A solder paste according to the present invention is provided by mixing flux with a powder mixture of Sn powder or an Sn based lead-free solder powder with Cu or Ag powder which has Ni plating formed on its surface. Although the solder paste performs bonding by means of an intermetallic compound without melting to form a single phase structure, the Ni plating acts as a barrier which retards the formation of the intermetallic compound so as to leave enough time to permit wetting of the lands of a printed circuit board or electrodes of an electronic part.

    Abstract translation: 具有比用于焊接印刷电路板的焊料合金更高的熔点的高温焊料用于电子部件的内部粘合,但是没有开发出没有Pb的高温焊料。 存在包含Sn球和Cu球的高温焊料,并且通过形成金属间化合物而不熔化形成单相结构,但是它们对印刷电路板的焊盘或电极的电极的润湿性差 电子部件并未使用。 通过将助熔剂与Sn粉末或Sn类无铅焊料粉末的混合物与其表面上形成有Ni镀层的Cu或Ag粉末混合来提供根据本发明的焊膏。 虽然焊膏通过金属间化合物进行结合而不熔化形成单相结构,但是Ni镀层作为阻碍金属间化合物形成的屏障,以便留下足够的时间来润湿 印刷电路板或电子部件的电极。

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