Apparatus and method for driving LED display panel

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United States of America Patent

PATENT NO 9485827
SERIAL NO

13684197

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Abstract

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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.

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SCT LTDGOVERNOR'S SQUARE | WEST BAY ROAD / LIME TREE BAY ROAD |UNIT # 2-105 PO BOX 1982 GRAND CAYMAN KY1-1104

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Yutao Meizhou, CN 10 33
Li, Eric Milpitas, US 125 2301
Nadershahi, Shahnad Simi Valley, US 12 48
Shen, Lei Chengdu, CN 59 317
Tang, Shang-Kuan Fremont, US 28 109
Yang, Wenjie Meizhou, CN 9 36
Zhang, Yi San Jose, US 1881 15120

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