Control chip for use in variable refresh rate and related display device and driving method
US11335288B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2020 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Jan 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0435
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A control chip configured to be coupled with a backlight driving chip and a display panel is provided. The control chip includes a storage element and a processing circuit. The storage element is configured to store a predetermined vertical refresh rate of the display panel. The processing circuit is coupled with the storage element, and is configured to provide a switching signal to the backlight driving chip so that the backlight driving chip enables a backlight module according to the switching signal. A frequency of the switching signal is equal to the predetermined vertical refresh rate. If the processing circuit has not received a vertical refresh starting pulse for more than a predetermined frame time corresponding to the predetermined vertical refresh rate, the processing circuit increases the frequency of the switching signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.