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公开(公告)号：US09728338B2
公开(公告)日：2017-08-08
申请号：US14726632
申请日：2015-06-01
Inventor： Makoto Nagashima , Youichirou Uka , Koji Okamoto , Shigetaka Furusawa
CPC classification number: H01G4/33 , H01G9/0036 , H01G9/028 , H01G9/15
Abstract: A first conductive polymer solution in which fine particles of a conductive polymer are dispersed is applied to a dielectric layer of aluminum oxide, and this solution is dried to form a first conductive polymer layer. Next, a coating solution is applied to the first conductive polymer layer, this solution containing at least one selected from an aromatic sulfonic acid having, in one molecule of the acid, a carboxyl group and a hydroxyl group, or two carboxyl groups, and a salt of the aromatic sulfonic acid. The solution is then dried to form a coating layer. Next, a second conductive polymer solution is applied to the coating layer, the solution being a solution in which fine particles of a conductive polymer are dispersed. This solution is then dried to form a second conductive polymer layer. This process gives a solid electrolyte layer of a capacitor element.
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公开(公告)号：US10991514B2
公开(公告)日：2021-04-27
申请号：US16124429
申请日：2018-09-07
Inventor： Nobuyuki Yamaguchi , Koji Fukuchi , Koji Okamoto , Tetsuro Iwasa , Takahiro Kobayashi , Yasuo Tanaka , Ryo Morioka
Abstract: A method for producing an electrolytic capacitor includes: a first step of preparing an anode body, and forming a dielectric layer on a surface of the anode body; a second step of forming a first conductive polymer layer on a surface of the dielectric layer, the first conductive polymer layer including a first conductive polymer and a first silane compound; a third step of bringing the first conductive polymer layer into contact with a first treatment liquid; and a fourth step of providing a second silane compound to the first conductive polymer layer after the third step.
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公开(公告)号：US10475590B2
公开(公告)日：2019-11-12
申请号：US15870839
申请日：2018-01-12
Inventor： Nobuyuki Yamaguchi , Koji Fukuchi , Koji Okamoto , Tetsuro Iwasa , Takahiro Kobayashi , Yasuo Tanaka , Ryo Morioka
IPC: H01G9/025 , H01G9/028 , H01G9/00 , H01G9/07 , C08G61/12 , C09D5/24 , H01G9/15 , C08K5/42 , C09D165/00 , H01G9/042 , H01G9/052
Abstract: An electrolytic capacitor includes: an anode body; a dielectric layer formed on the anode body; a first conductive polymer layer which covers at least a portion of the dielectric layer; and a second conductive polymer layer which covers at least a portion of the first conductive polymer layer. The first conductive polymer layer includes a first layer and a second layer. The first layer contains a first conductive polymer and a first dopant, and covers at least a portion of the dielectric layer. The second layer is formed on the first layer, and contains a first silane compound. The second conductive polymer layer contains a second conductive polymer, a second dopant, and a basic compound.
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Patent Agency Ranking
4.发明授权公开(公告)号：US10861654B2
公开(公告)日：2020-12-08
申请号：US16172458
申请日：2018-10-26
Inventor： Youichirou Uka , Makoto Nagashima , Tetsuro Iwasa , Koji Okamoto
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, and a solid electrolyte layer covering at least a portion of the dielectric layer. The solid electrolyte layer includes a π-conjugated conductive polymer, a high-molecular-weight dopant having an acid group, and a water-soluble polymer. The water-soluble polymer is a copolymer including a hydrophilic monomer unit having a hydrophilic group. The hydrophilic group is at least one group selected from the group consisting of a carboxyl group, an acid anhydride group, a phenolic hydroxyl group, and a C2-3 alkylene oxide group.
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公开(公告)号：US10679795B2
公开(公告)日：2020-06-09
申请号：US15841500
申请日：2017-12-14
Inventor： Nobuyuki Yamaguchi , Koji Fukuchi , Tetsuro Iwasa , Koji Okamoto , Takahiro Kobayashi , Yasuo Tanaka , Ryo Morioka
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, a first conductive polymer layer covering at least a part of the dielectric layer, and a second conductive polymer layer covering at least a part of the first conductive polymer layer. The first conductive polymer layer contains a first conductive polymer and a first silane compound. The second conductive polymer layer contains a second conductive polymer and a basic compound. The basic compound may be an amine compound.
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公开(公告)号：US10943743B2
公开(公告)日：2021-03-09
申请号：US16270309
申请日：2019-02-07
Inventor： Hitoshi Fukui , Shinya Suzuki , Koji Okamoto , Makoto Nagashima
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer disposed on the anode body, a solid electrolyte layer disposed on the dielectric layer, and a cathode lead-out layer disposed on the solid electrolyte layer. The solid electrolyte layer contains a first conductive polymer having a thiophene skeleton and a second conductive polymer having an aniline skeleton. In the solid electrolyte layer, a mass ratio of the second conductive polymer with respect to a total mass of the first conductive polymer and the second conductive polymer in a region close to the dielectric layer is greater than a mass ratio of the second conductive polymer with respect to a total mass of the first conductive polymer and the second conductive polymer in a region close to the cathode lead-out layer.
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公开(公告)号：US10714268B2
公开(公告)日：2020-07-14
申请号：US16102679
申请日：2018-08-13
Inventor： Koji Okamoto , Shinya Suzuki
IPC: H01G9/004 , H01G9/00 , H01G9/012 , H01G9/025 , H01G9/08 , H01G9/15 , H01G9/10 , H01G2/06 , H01G9/26 , H01G9/042
Abstract: A solid electrolytic capacitor includes a capacitor element, an anode terminal, a cathode terminal, and an outer package. The capacitor element includes an anode part, a dielectric body formed on a surface of the anode part, and a cathode part containing a conductive polymer. The anode terminal is electrically connected to the anode part. The cathode terminal is electrically connected to the cathode part. The outer package houses the capacitor element while exposing a part of the anode terminal and a part of the cathode terminal. The solid electrolytic capacitor includes a communicating path that connects a surface of the capacitor element to an exterior of the outer package.
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公开(公告)号：US10199176B2
公开(公告)日：2019-02-05
申请号：US15234822
申请日：2016-08-11
Inventor： Youichirou Uka , Makoto Nagashima , Tetsuro Iwasa , Koji Okamoto
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, and a solid electrolyte layer covering at least a portion of the dielectric layer. The solid electrolyte layer includes a first conductive polymer layer covering at least a portion of the dielectric layer, and a second conductive polymer layer covering at least a portion of the first conductive polymer layer. The second conductive polymer layer includes a second conductive polymer and a water-soluble polymer. The water-soluble polymer is a copolymer including a hydrophilic monomer unit having a hydrophilic group. The hydrophilic group is at least one group selected from the group consisting of a carboxyl group, an acid anhydride group, a phenolic hydroxyl group, and a C2-3 alkylene oxide group.
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