Display apparatus, local dimming control circuit and local dimming control method thereof
US11929041B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2022 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Nov 29, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display apparatus includes a backlight module with backlight zones, a panel over the backlight module, and a circuit configured to generate compensated pixel data for the panel based on image data and an arrangement of the zones of the backlight module, in which the image data has image areas respectively corresponding to the backlight zones. For a first image area being a low-luminance image area and a luminance intensity of a first zone of the zones corresponding to the first image area being less than a luminance intensity of a second zone corresponding to a second image area neighboring the first image area, the circuit performs first pixel compensation for high-luminance pixels in the second image area and second pixel compensation on low-luminance pixels in the second image area, in which the second pixel compensation is greater than the first pixel compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.