发明授权
- 专利标题: Capacitor and method for producing the same, and circuit board with a built-in capacitor and method for producing the same
- 专利标题(中): 电容器及其制造方法以及具有内置电容器的电路板及其制造方法
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申请号: US10726675申请日: 2003-12-04
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公开(公告)号: US07126811B2公开(公告)日: 2006-10-24
- 发明人: Koichi Hirano , Tsunenori Yoshida , Hiroyuki Handa , Yoshihisa Yamashita , Seiichi Nakatani
- 申请人: Koichi Hirano , Tsunenori Yoshida , Hiroyuki Handa , Yoshihisa Yamashita , Seiichi Nakatani
- 申请人地址: JP Osaka
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JPP2002-379231 20021227
- 主分类号: H01G9/00
- IPC分类号: H01G9/00
摘要:
A miniature solid electrolytic capacitor is provided, which is suitable for being disposed within an electrically insulating layer, and is connected to a component using an electrically conductive adhesive with a connection resistance at an anode being low and with connection reliability being improved. Specifically, the electrolytic capacitor includes a valve metal element for an anode having a capacitor forming part and an electrode lead part, a dielectric oxide film formed on the valve element, a solid electrolyte layer formed on the dielectric oxide film and a charge collecting element for a cathode formed on the solid electrolyte layer, wherein at least one through hole is formed in the electrode lead part so as to expose a core of the valve metal element, and wherein an exposed portion of the core is used as a connecting portion.