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    • 2. 发明授权
    • Circuit board and method for manufacturing the same
    • 电路板及其制造方法
    • US07851707B2
    • 2010-12-14
    • US11591559
    • 2006-11-02
    • Daisuke MizutaniTatsuhiko Tajima
    • Daisuke MizutaniTatsuhiko Tajima
    • H05K1/03
    • H05K1/024H05K1/0298H05K2201/0187H05K2201/0195H05K2201/0209Y10T29/49126
    • A circuit board for reducing a transmission loss and a method for manufacturing the circuit board. In the circuit board including a ground layer and power layer facing each other, a wiring layer disposed between the ground layer and the power layer, and an insulating section formed between the ground layer and the power layer so as to sandwich the wiring layer therebetween, a low dielectric loss layer having a dielectric tangent lower than that of the insulating section is formed at least on an upper or lower surface of the wiring layer. According to such a circuit board, the low dielectric loss layer is formed on an interface between the insulating section and the wiring layer, and therefore, a transmission loss in a high frequency region is reduced.
    • 一种用于降低传输损耗的电路板和一种用于制造电路板的方法。 在包括接地层和功率层相对的电路板中,布置在接地层和功率层之间的布线层以及形成在接地层和功率层之间以将布线层夹在其间的绝缘部分, 至少在布线层的上表面或下表面上形成具有低于绝缘部分的介电切线的低介电损耗层。 根据这种电路板,低介电损耗层形成在绝缘部分和布线层之间的界面上,因此降低了高频区域的传输损耗。