Device for driving capacitive load
US6580409B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2000 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Apr 12, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0275
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A number of capacitive pixels formed in an electroluminescent display panel are selectively charged and discharged by the driving device. The driving device is composed of a charging circuit connected between a power source and the pixels and a discharging circuit connected between the pixels and the ground. Both the charging and discharging circuits include a respective inductive coil that constitutes a series L-C circuit together with the capacitive pixel. Since the pixels are charged and discharged through the series L-C circuit, impulse current otherwise flows in and out of the pixels is suppressed, and thereby radio noises generated by the impulse current are prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.