Pre-charge driver for light emitting devices and method
US5723950A · kind A · utility
183Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Jun 10, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A precharge driver for light emitting devices with an associated capacitance, the precharge driver including a driver coupled to a light emitting device so as to supply a substantially square wave of current to the light emitting device and a precharge circuit coupled to the driver so as to activate the driver to supply a pulse of current to the associated capacitance of the light emitting device to rapidly charge the associated capacitance at an initial portion of the square wave of current, whereby a resultant substantially square wave of current is applied to the light emitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.