Display device and control circuit for a light modulator
US7557778B2 · kind B2 · utility
1Cited by
0References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Aug 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an active-matrix image display device that comprises an array of light emitters. Each light emitter is controlled by a current modulator having a particular trip threshold voltage. The device also includes compensation means for compensating for the trip threshold voltage of the modulators. These compensation means comprise at least one operational amplifier connected between the gate electrode and the source electrode of the modulator. The feedback of this operational amplifier compensates for the trip threshold voltage of at least one modulator whatever the value of the said voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.