Circuit board, method of producing same, and power module
    13.
    发明授权
    Circuit board, method of producing same, and power module 有权
    电路板,其制造方法和电源模块

    公开(公告)号:US07128979B2

    公开(公告)日:2006-10-31

    申请号:US10510199

    申请日:2003-04-21

    IPC分类号: B22F3/00 H01L23/10

    摘要: A circuit board including conductive layers bonded to both surfaces of an insulating ceramic substrate, with a brazing material disposed therebetween. The conductive layers comprise at least 99.98% by mass of aluminum, and display an average crystal grain diameter within a range from 0.5 mm to 5 mm and a standard deviation σ for that crystal grain diameter of no more than 2 mm. Each conductive layer comprises at least 20 ppm of Cu, Fe and Si. The surface area of the crystal with the maximum crystal grain diameter within the conductive layers accounts for no more than 15% of the surface area of the insulating ceramic substrate.

    摘要翻译: 一种电路板,包括结合到绝缘陶瓷基板的两个表面的导电层,其间设置有钎焊材料。 导电层包含至少99.98质量%的铝,并且平均晶粒直径在0.5mm至5mm的范围内,并且该晶粒直径的标准偏差σ为不大于2mm。 每个导电层包含至少20ppm的Cu,Fe和Si。 在导电层内具有最大晶粒直径的晶体的表面积不超过绝缘陶瓷衬底的表面积的15%。

    USB hub, USB-compliant apparatus, and communication system

    公开(公告)号:US20060179144A1

    公开(公告)日:2006-08-10

    申请号:US11334560

    申请日:2006-01-19

    申请人: Toshiyuki Nagase

    发明人: Toshiyuki Nagase

    CPC分类号: G06F13/387 G06F2213/4004

    摘要: A USB hub according to an embodiment of the invention includes: a USB upstream port unit for inputting/outputting data in accordance with a USB protocol; a wireless upstream port unit for inputting/outputting data in accordance with a predetermined wireless communication protocol; a USB downstream port unit including at least one input/output port for inputting/outputting data in accordance with the USB protocol; a port selector for selection between the USB upstream port unit and the wireless upstream port unit to be connected with the input/output port; and a communication protocol converting unit provided on a connection path between the wireless upstream port unit and the port selector and converting the USB protocol and the wireless communication protocol.