US 12,272,321 B2
Method and apparatus for LED driver to reduce cross talk or flicker
Ming Sun, Santa Clara, CA (US); Nicola Rasera, Munich (DE); Robert D Zucker, Half Moon Bay, CA (US); Johan L Piper, Cupertino, CA (US); Denis M Darmon, Boulder, CO (US); Fabio Ongaro, Unterhaching (DE); and Xiaofeng Wang, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 6, 2023, as Appl. No. 18/243,011.
Claims priority of provisional application 63/376,545, filed on Sep. 21, 2022.
Prior Publication US 2024/0096291 A1, Mar. 21, 2024
Int. Cl. G09G 3/34 (2006.01)
CPC G09G 3/3413 (2013.01) [G09G 3/346 (2013.01); G09G 2320/0209 (2013.01); G09G 2320/0247 (2013.01); G09G 2330/021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
a first illuminator configured to generate first light during a first time period;
a second illuminator configured to generate second light during a second time period, wherein the first illuminator and the second illuminator are coupled to a common electrode and
a driver configured to:
provide a first driving voltage to the common electrode during the first time period;
provide a second driving voltage to the common electrode during the second time period, wherein the second time period is separated from the first time period by a dark time period; and
provide a reference voltage, determined based on at least the first driving voltage or the second driving voltage, to the common electrode during a third time period, wherein the third time period is within the dark time period.