Biasing apparatus, systems, and methods
US7569803B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2007 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Feb 6, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus, methods, and systems for providing a uniform bias voltage in a biasing circuit to a plurality of pixels. The biasing circuit has a plurality of switches, including a first switch connected at a first end of a capacitor and a second end connected to a first ground. A second switch is connected at a first end to a bias voltage reference and at a second end to a gate of a biasing transistor and a second end of the capacitor. A third switch is connected at a first end to the first end of the capacitor and at a second end to the drain of the biasing transistor and a second ground. The first and the second switch are closed and the third switch is open to set a bias voltage on the capacitor. The first and second switch are open and the third switch is closed when the bias voltage is set on the capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.