公开(公告)号：US20230186835A1

公开(公告)日：2023-06-15

申请号：US17992158

申请日：2022-11-22

Applicant: LUMILEDS LLC

Inventor： Ronald Johannes Bonne ,  Claire Yue Gao ,  David Christopher Jansson ,  Zhi Hua Song

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2340/16 ,  G09G2320/0233 ,  G09G2320/0666 ,  G09G2320/0626

Abstract: A method for control of a pixel array based on a temperature estimate is provided. A method includes sampling an anode voltage of each LED of a plurality of pixels resulting in sampled voltages, determining an average voltage based on the sample voltages, and determining a total voltage to provide to the pixels based on the average voltage and voltage data from a memory coupled to the controller, the voltage data including one or more of a 3-sigma value, a driver headroom value, a resistance value, or a k-factor value.

公开(公告)号：US11935461B2

公开(公告)日：2024-03-19

申请号：US17992158

申请日：2022-11-22

Applicant: Lumileds LLC

Inventor： Ronald Johannes Bonne ,  Claire Yue Gao ,  David Christopher Jansson ,  Zhi Hua Song

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2320/0666 ,  G09G2340/16

Abstract: A method for control of a pixel array based on a temperature estimate is provided. A method includes sampling an anode voltage of each LED of a plurality of pixels resulting in sampled voltages, determining an average voltage based on the sample voltages, and determining a total voltage to provide to the pixels based on the average voltage and voltage data from a memory coupled to the controller, the voltage data including one or more of a 3-sigma value, a driver headroom value, a resistance value, or a k-factor value.