Back to results
US 9,287,055 B2Granted
Solid electrolytic capacitor and method for manufacturing same
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsToshiyuki Kato, Tomohiro Mitsuyama
Life of this patent
Estimating the term…
Abstract
A solid electrolytic capacitor includes: an anode body; a first dielectric layer formed on the anode body and including metal oxide; a second dielectric layer formed on the first dielectric layer and including an insulating polymer; a third dielectric layer formed on the second dielectric layer and including a dielectric substance having a higher dielectric constant than that of the metal oxide; and a solid electrolyte layer formed on third dielectric layer.
Claims8
A solid electrolytic capacitor comprising:
- an anode body;
- a first dielectric layer formed on the anode body and including metal oxide;
- a second dielectric layer formed on the first dielectric layer and including an insulating polymer;
- a third dielectric layer formed on the second dielectric layer and including a dielectric substance having a higher dielectric constant than that of the metal oxide;
- and
- a solid electrolyte layer formed on the third dielectric layer.
3 more elements
A method for manufacturing a solid electrolytic capacitor comprising:
- an anode body;
- a first dielectric layer formed on the anode body and including metal oxide;
- a second dielectric layer formed on the first dielectric layer and including an insulating polymer;
- a third dielectric layer formed on the second dielectric layer and including a dielectric substance having a higher dielectric constant than that of the metal oxide;
- and a solid electrolyte layer formed on the third dielectric layer,
- the method comprising the steps of:
- forming the second dielectric layer on a metal member forming the anode body;
- and
- soaking the metal member provided with the second dielectric layer in a solution including an ion of a first metal that is at least one of metal elements constituting the third dielectric layer, carrying out energization using the metal member as an anode for anodizing a portion of the metal member, which is brought into contact with the second dielectric layer, so as to form the first dielectric layer, and precipitating an oxide layer of an ion of the first metal on the second dielectric layer.
6 more elements
Dependencies are inferred from the claim text.