Capacitor and method for manufacturing the same
US7072169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2004 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Dec 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A laminated ceramic capacitor 10 divided into a first laminate 11, a second laminate 12, a third laminate 13, and a fourth laminate 14. The first laminate 11 includes a ceramic layer 15 serving as a dielectric layer. The ceramic layer 15 is thicker than a ceramic layer 17 sandwiched between internal electrodes 16a in the second laminate 12 or the fourth laminate 14, and thinner than 20 times the thickness of the ceramic layer 17. The third laminate 13 includes dielectric layers, which serve as the ceramic layers 17, and has a thickness of 5% of the total thickness of the second laminate 12 and the fourth laminate 14. Accordingly, the third laminate 13 achieves the function of absorbing an electrode-induced thickness differential. Also, by means of regulating the thickness of the first laminate 11, portions of via electrodes 18 that extend without being electrically connected to the internal electrodes 16b can be shortened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.