Backlight control circuit
US12223920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2024 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Jan 2, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A backlight control circuit for a surface light emitting device is provided. The backlight control circuit includes a driving circuit. The driving circuit is configured to generate a plurality of driving currents to drive the surface light emitting device such that a plurality of backlight blocks of the surface light emitting device generate a plurality of brightness values. The surface light emitting device is divided into a first backlight area and a second backlight area. The second backlight area is closer to an edge of the surface light emitting device than the first backlight area. A first driving current of the plurality of driving currents is utilized for driving the light source of the first backlight area. A second driving current of the plurality of driving currents is utilized for driving the light source of the second backlight area. The second driving current is greater than the first driving current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.