Title:
CAPACITOR ELEMENT, SOLID ELECTROLYIC CAPACITOR, PROCESS FOR PRODUCING THE SAME, AND COMBINATION OF CAPACITOR ELEMENTS
Document Type and Number:
WIPO Patent Application WO/2004/084243
Kind Code:
A1
Abstract:
A capacitor element capable of increasing the capacitance significantly with identical dimensions and shape, a solid electrolytic capacitor, and their producing process. The capacitor element (12) comprises an aluminum substrate (18) of such a shape as having a plurality of sides (1a, 1b), an anode part (30) formed partially in the edge regions (3a, 3b) on at least one of a plurality of sides of a region on the major surface (12b) of the aluminum substrate (18), a cathode part (32) formed in the residual region (31) of the region where the anode part (30) is formed and having a solid polymer electrolyte layer (22) formed on the aluminum substrate (18) through an aluminum oxide film (20) and a silver paste layer (26) formed on the solid polymer electrolyte layer (22), and a slit (28) for insulating the anode part (30) from the cathode part (32) electrically. The anode part (30) is located on the inner side of the outer circumference (52) of the aluminum substrate (18) where the cathode part (32) is formed. Area of the capacitor element (12) can thereby be increased to allow it to approach the area of outside dimensions of a capacitor (10) being produced using the capacitor element (12).
Inventors:
Yoshihara, Yumiko c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo 72, 10382, JP)
Kobayashi, Masaaki c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo 72, 10382, JP)
Kobayashi, Masaaki c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo 72, 10382, JP)
Application Number:
PCT/JP2004/003583
Publication Date:
September 30, 2004
Filing Date:
March 17, 2004
Export Citation:
Assignee:
TDK CORPORATION (1-13-1, Nihonbashi Chuo-ku, Tokyo 72, 10382, JP)
Yoshihara, Yumiko c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo 72, 10382, JP)
Kobayashi, Masaaki c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo 72, 10382, JP)
Yoshihara, Yumiko c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo 72, 10382, JP)
Kobayashi, Masaaki c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo 72, 10382, JP)
International Classes:
H01G9/012; H01G9/04; H01G9/045; H01G9/055; H01G9/15; H01G9/008; H01G9/04; H01G9/042; H01G9/048; H01G9/15; (IPC1-7): H01G9/04; H01G9/012
Attorney, Agent or Firm:
Hasegawa, Yoshiki (Soei Patent and Law Firm, Ginza First Bldg. 10-6, Ginza 1-chom, Chuo-ku Tokyo 61, 10400, JP)
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