Method of driving dynamic backlight and display device
US10796644B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 3, 2018 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Dec 26, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0435
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The embodiments of the disclosure discloses a method of driving a dynamic backlight and a display device. In this method, a vertical synchronization signal corresponding to an input image signal is received; a first level signal and a second level signal are outputted alternately in response to a change edge of the vertical synchronization signal, where the total duration of the first level signal and the second level signal is 1/m of the duration between the change edge and a first change edge before the change edge, wherein the change edge and the first change edge before the change edge are change edges of a same changing direction; m is a positive integer; and the drive chip receives the first level signal and the second level signal and generates a PWM signal according to the first level signal and the second level signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.