Current mode display driver circuit realization feature
US7499208B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 2005 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Jan 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention comprises devices and methods for driving a MEMs pixel, and in particular, an interferornetric modulator pixel. In one embodiment a device for modulating light includes a light modulator including a movable optical element positionable in two or more positions, the modulator operating interferometrically to exhibit a different predetermined optical response in each of the two or more positions, and control circuitry connected to the light modulator for controlling said interferometric modulator, where the control circuitry is controllably switchable between two circuit configurations, and where the control circuitry provides a substantially constant current to said light modulator when switching between the two circuit configurations to cause the movable optical element of the light modulator to move between two positions of its two or more positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.