Local dimming display architecture which accommodates irregular backlights
US8982038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2011 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Apr 21, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display system and method for displaying an image on the display system are provided. The display system includes a display panel and a backlight for illuminating the display panel, the backlight including one or more light emitting zones that each emit light in response to a backlight drive value. The display system further includes a backlight selection module for selecting the backlight drive value for each light emitting zone from image data, an effective backlight module that generates effective backlight signals using light spread information for the backlight and the backlight drive values, and a module for modulating the image data according to the effective backlight signal and providing the modulated image data to the display panel. The light spread information includes information representing the contribution of light from each light emitting zone over the display panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.