Solid-state electrolytic capacitor with improved metallic anode and method for manufacturing the same
AssigneeApaq Technology Co., Ltd.
InventorsChi-Hao Chiu, Ming-Tsung Chen, Chai-Ching Sung
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Abstract
The instant disclosure relates to a solid electrolytic capacitor with improved metallic anode and a method for manufacturing the same. The solid electrolytic capacitor includes a substrate layer, a conductive polymer layer and an electrode layer. The substrate layer has a cathode portion and an anode portion having a smaller thickness than the cathode portion. The conductive polymer layer is formed to cover the cathode portion of the substrate layer. The electrode layer is formed to cover the conductive polymer layer. Therefore, the instant solid electrolytic capacitor can be applied to a packing process, and welding success yield rate can be improved.
Claims8
A solid-state electrolytic capacitor with improved metallic anode, comprising:
- a substrate layer having an anode part and a cathode part, wherein the anode part and the cathode part each includes a metallic core body and two corrosion layers respectively formed on two opposite surfaces of the metallic core body, and each corrosion layer of the anode part has a thinner thickness than a thickness of each corrosion layer of the cathode part, and thus the thickness of the anode part is smaller than that of the cathode part;
- a conductive polymer layer covering on a portion of the cathode part;
- and
- an electrode layer covering the conductive polymer layer.
A method for manufacturing solid-state electrolytic capacitor with improved metallic anode, comprising the following steps:
- providing a substrate layer having an anode part and a cathode part, wherein the anode part and the cathode part of substrate layer each include a metallic core body and two corrosion layers respectively formed on two opposite surfaces of the metallic core body;
- removing a portion of the two corrosion layers of the anode part to reduce the film thickness of the anode part to a predetermined thickness thinner than a film thickness of the cathode part;
- forming a conductive polymer layer on a portion of the cathode part;
- and
- forming an electrode layer to cover the conductive polymer layer.
Dependencies are inferred from the claim text.