Multilayer ceramic capacitor with low acoustic noise
US10510492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2017 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | May 19, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Monolithic capacitor structures having a main capacitor and a vise capacitor are discussed. The vise capacitor provides to the monolithic capacitor structure reduced vibrations and/or acoustic noise due to piezoelectric effects. To that end, vise capacitor may cause piezoelectric deformations that compensate the deformations that are caused by the electrical signals in the main capacitor. Embodiments of these capacitor structures may have the main capacitor and the vise capacitor sharing portions of a rigid dielectric. Electrical circuitry that employs the vise capacitor to reduce noise and/or vibration in the monolithic capacitor structures is also described. Methods for fabrication of these capacitors are discussed as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.