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:
Apr. 24, 2018
Filed:
Aug. 15, 2016
Sct Technology, Ltd., Grand Cayman, KY;
Eric Li, Milpitas, CA (US);
Shang-Kuan Tang, Fremont, CA (US);
Wenjie Yang, Meizhou, CN;
Lei Shen, Chengdu, CN;
Yi Zhang, San Jose, CA (US);
Yutao Chen, Meizhou, CN;
Shahnad Nadershahi, Simi Valley, CA (US);
SCT TECHNOLOGY, LTD., Grand Cayman, KY;
Abstract
The present disclosure provides devices, circuits, and methods for driving an LED display panel, so as to ensure the delivery of equal global charge at minimum gray scale. In one example, the circuit of the present disclosure includes a current source, a detection module, and a measurement module. The current source is configured to generate a current signal for the LEDs. The detection module is configured to detect a forward voltage of the LEDs in response to a low current applied to the LEDs. The detection module is further configured to hold the detected forward voltage. The measurement module is configured to measure a time period for an anode voltage of the LEDs to rise to the detected forward voltage in response to a display current applied to the LEDs.