System architecture for high density mini/micro LED backlight application
US11631376B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2022 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Jan 13, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A non-emissive display includes a backlight controller sending a pulse during each sub-frame of a plurality of frames to row and column drivers that drive backlight zones. The row drivers count each pulse to keep a pulse count total, and reset the pulse count total when it is equal to a first number indicating how many row drivers are present. Each row driver activates its channels and waits for a next pulse if the pulse count total is not equal to the first number and if the pulse count total is equal to a second number indicating in which sub-frame that first driver is to be activated. Each row driver waits for a next pulse if the pulse count total is not equal to the first number and the second number. Each column driver activates its channel in response to receipt of each pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.