Patent · US Active

Method and apparatus for LED driver to reduce cross talk or flicker

US12272321B2 · kind B2 · utility

0Cited by

9References

20Claims

0Family size

Assignee

Apple Inc. · US

Inventors

Ming SUN · Santa Clara, US
Nicola Rasera · Munich, DE
Robert David Zucker · Los Altos, US
Johan Piper · Comberton, GB
Denis M Darmon · Longmont, US
Fabio Ongaro · Munich, DE
Xiaofeng Wang · Anshan City, CN

Key dates

Filing date	Sep 6, 2023
Grant date	Apr 8, 2025
Priority date	—
Expiry date	Sep 6, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG09G2330/028
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Systems and methods for electronic displays to use reference voltages to control driving current of illuminators are provided. The reference voltages are used to reduce or eliminate cross talk in driving voltages among different illuminators and driving voltage variations from frame to frame. The transient performance of the driving current of the illuminator (e.g., the current rise/decline time, current overshoot issue, current settling time) may be improved by implementing the reference voltages.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.