Method of formation of a capacitor with a solid electrolyte layer comprising an organic semiconductor, and method of production of circuit board
US6890792B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2003 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Aug 22, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S438/957
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of formation of a capacitor forming part of an electric circuit when producing a circuit board, consisting of forming a valve metal bottom electrode layer and a valve metal oxide dielectric layer on the same, then integrally forming a solid electrolyte layer comprised of an organic semiconductor and a top electrode layer comprised of metal on the same, this integral formation step consisting of the step of holding one surface of metal foil for the top electrode at a bonding wedge and making the other surface of the metal foil carry a powder of the organic semiconductor by compression bonding and heating and the step of compression bonding the organic semiconductor powder carried by compression bonding at the dielectric layer by a bonding wedge through metal foil, whereby a solid electrolyte layer comprised of an organic semiconductor sandwiched between the metal foil and dielectric layer and closely bonded with the two is formed, a capacitor built into a circuit board, a circuit board including a capacitor, and a method of production of the circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.