Method and apparatus for controlling liquid crystal display brightness, and liquid crystal display device
US10783836B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2018 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Dec 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This disclosure provides a method, and a liquid crystal display device, where the method includes: determining grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal; pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values; calculating an adjusted backlight value of a backlight zone corresponding to the zone image data block, based on the zone backlight value, a backlight value gain variable, and an ambient luminance revision variable; outputting the adjusted backlight value to a driver circuit of a backlight source in the backlight zone; and driving the backlight source according to the adjusted backlight value to control brightness of the backlight source in the backlight zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.