The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2022
Filed:
Mar. 16, 2021
Sct Ltd., Grand Cayman, KY;
Eric Li, Milpitas, CA (US);
Yi Zhang, Milpitas, CA (US);
Shang-Kuan Tang, Milpitas, CA (US);
Shean-Yih Chiou, Milpitas, CA (US);
SCT LTD., Grand Cayman, KY;
Abstract
An LED display system includes a driver chip and an LED array having m scan lines, n channels, and m scan switches. The driver chip includes an analog circuit and a digital controller that controls the analog circuit. The analog circuit has a plurality of power sources that are electrically connected to the LED array and provide a plurality of driving currents to the n channels of LEDs. Further, the n channels are divided into p groups and each group has q channels, p is an integer of 2 to n. Channels in each of the p groups receive a plurality of PWM signals. The starting times of the input PWM signals to at least two different groups among the p groups are different. Further, PMW signals to the channels in the same group may have a same starting time or may have different starting times.