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    • 10. 发明申请
    • AQUEOUS DISPERSION FOR FORMING CONDUCTIVE LAYER, CONDUCTIVE LAYER, ELECTRONIC COMPONENT, CIRCUIT BOARD AND METHOD FOR MANUFACTURING THE SAME, AND MULTILAYER WIRING BOARD AND METHOD FOR MANUFACTURING THE SAME
    • 用于形成导电层,导电层,电子部件,电路板及其制造方法的水性分散体和多层布线板及其制造方法
    • WO01032964A1
    • 2001-05-10
    • PCT/JP2000/007683
    • 2000-11-01
    • C25D9/00C25D13/00H05K1/09H05K3/24H05K3/40H05K3/46C01B13/14
    • C25D9/00C25D13/00H05K1/095H05K3/06H05K3/245H05K3/4069H05K3/4602H05K3/4664H05K2201/0355H05K2201/0394H05K2203/135H05K2203/1461
    • An aqueous dispersion of the invention in which conductive particles and organic particles are dispersed in an aqueous medium is used for forming a conductive layer having a volume resistivity of, for example, 10 OMEGA =.cm or less by electrodeposition. A circuit board of the invention comprises an insulating layer and a conductive layer including a through conductive part extending through the conductive layer and is manufactured preferably by a method of the invention. The method comprises the steps of closing one mouth of a through hole made in the insulating layer with a piece of conductive foil and electrodepositing a conductive layer using a dispersion of the invention as the electrodeposition liquid and the conductive foil as one electrode. A multilayer wiring board of the invention comprises a core wiring sheet having sheet wiring layers connected to each other and formed on both sides of the sheet, an insulating layer formed on at least one of the sides of the sheet, a wiring layer formed thereon, and an interlayer short-circuiting part electrically connecting the wiring layer to the sheet wiring layer and extending through the insulating layer. The interlayer short-circuiting part is a conductor formed by electrodeposition using the dispersion as the electrolyte. Since the conductive layer or conductor is formed by electrodeposition, the productivity and connection reliability are high.
    • 将导电粒子和有机粒子分散在水性介质中的本发明的水性分散体用于通过电沉积形成体积电阻率例如为10 -4Ω·cm -1以下的导电层。 本发明的电路板包括绝缘层和导电层,导电层包括延伸穿过导电层的贯通导电部分,并且优选地通过本发明的方法制造。 该方法包括以一片导电箔封闭在绝缘层中形成的通孔的一个口,并使用本发明的分散体作为电沉积液和导电箔作为一个电极来电沉积导电层的步骤。 本发明的多层布线基板包括具有彼此连接并形成在片材的两面上的片状布线层的芯布线片,形成在片材的至少一个侧面上的绝缘层,形成在其上的布线层, 以及将所述布线层与所述片状布线层电连接并延伸穿过所述绝缘层的层间短路部。 层间短路部分是通过使用分散体作为电解质的电沉积形成的导体。 由于通过电沉积形成导电层或导体,因此生产率和连接可靠性高。