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    • 6. 发明授权
    • Substrate for circuit wiring
    • 电路布线基板
    • US07078628B2
    • 2006-07-18
    • US10723349
    • 2003-11-25
    • Hiromichi WatanabeYoshifumi FukatsuHideaki Kaino
    • Hiromichi WatanabeYoshifumi FukatsuHideaki Kaino
    • H05K1/03
    • H05K3/284H01L23/49894H01L2924/0002H05K1/056H05K2201/0209H05K2201/0212H01L2924/00
    • The present invention concerns a substrate for circuit wiring in which an electronic component is mounted, by soldering, to a wiring pattern formed on an insulated layer deposited over a metallic substrate. A silica-based filler and a rubber-based filler are added in the insulated layer to reduce the linear thermal expansion of the layer and increase its elastic modulus. The mounting portion of an electronic component is molded with a resin material to which a silica-based filler has been added, and which thus has a coefficient of linear thermal expansion smaller than the coefficient of linear thermal expansion of the insulated layer. This serves to alleviate the stress caused by the linear thermal expansion of the metallic substrate, and thereby to prevent separation from occurring between the insulated layer and the metallic substrate, as well as between the insulated layer and the wiring pattern, when subjected to a high-temperature environment.
    • 本发明涉及一种用于电路布线的基板,其中通过焊接将电子部件安装到沉积在金属基板上的绝缘层上形成的布线图案。 在绝缘层中添加二氧化硅系填料和橡胶类填料,以减少层的线性热膨胀并提高其弹性模量。 电子部件的安装部分用添加有二氧化硅基填料的树脂材料模制,因此具有比绝热层的线性热膨胀系数小的线性热膨胀系数。 这用于减轻金属基板的线性热膨胀引起的应力,从而防止在绝缘层和金属基板之间以及绝缘层和布线图案之间发生分离时,当受到高 温度环境。