The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2003
Filed:
Nov. 27, 2002
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention provides a solid electrolyte capacitor with which both higher capacitance and lower ESR are achieved, as well as a method for manufacturing the same. The manufacturing method includes a step of forming, in a first solution, a first conductive polymer film serving as a portion of a conductive polymer layer, and a step of forming, in a second solution whose pH is lower than the pH of the first solution, a second conductive polymer film serving as another portion of the conductive polymer layer. The first conductive polymer film and the second conductive polymer film are both formed by electrolytic oxidative polymerization or by chemical oxidative polymerization. Thus, the conductive polymer layer includes a first conductive polymer film made of a plurality of particles, and a second conductive polymer film having an average particle size that is larger than the average particle size of those plurality of particles. The second conductive polymer film is formed such that it covers the apertures of the plurality of pores formed in the anode conductor, and the first conductive polymer film is formed such that at least a portion thereof is disposed inside the plurality of pores, or it is arranged as an outermost film of the conductive polymer layer.