Method and circuit for the control of large arrays of electrostatic actuators
US6750589B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Sep 16, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N1/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit and method for controlling an array of n electrostatic actuators, where n is an integer, preferably of at least 32 and may be in excess of 10,000 or more. At least one high voltage generator is provided having a desired high voltage output. N switches are operably connected to the generator, each switch being directly connected to one of the n electrostatic actuators. N capacitors, one of which is connected in parallel to each of the n actuators receives voltage from the high voltage generator through its specific switch. A central processor controls the desired voltage in a particular wave form and the time each of the n switches is closed. The shape of the voltage and the time of the voltage rise is determined by the voltage leakage in the components of the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.