Actuator using bi-directional electrostatic force
US11444554B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 22, 2020 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Nov 28, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N1/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Proposed is an actuator using a bi-directional electrostatic force, which generates a bi-directional electrostatic force in order to amplify and vibrate the vibration of a vibrator. The actuator may include an upper electrostatic force generator configured to generate a first electrostatic force in response to a first high voltage signal, a lower electrostatic force generator configured to generate a second electrostatic force in response to a second high voltage signal having a phase difference with the first high voltage signal, and a vibration generator positioned in a space between the upper electrostatic force generator and the lower electrostatic force generator and configured to generate vibration in response to the first and second electrostatic forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.