Power saving circuit employing visual persistence effect for backlight modules
US7271794B1 · kind B1 · utility
66Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2006 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Oct 5, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A power saving circuit employing visual persistence effect for backlight modules aims to increase electric power at a duty mode to drive lighting units at a read end through driving units, and provide zero or lower electric power at a power saving mode to the lighting units at the rear end. Different lighting units generate light alternately in a first condition time sequence to enable user's eyes to get images. In a second condition time sequence power consumption of the driving units is reduced and user's eyes still can maintain visual sense of the images due to visual persistence effect, thereby electric power can be saved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.