Sct Technology, Ltd.

Yutao Chen

Eric Li

Shang-Kuan Tang

Wenjie Yang

Yi Zhang

Shahnad Nadershahi

Shean-Yih Chiou

Jun Tian

Lei Shen

Tianqi Qiu

Chun Lu

Xinchao Peng

Hui Li

Zhe Gong

Jianxin Xue

Shoulin Li

Zhifeng Wen

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.

Apparatus and method for driving LED display panel

The current disclosure provides an LED display control circuit. The control circuit has a device configured to separate a first PWM data into LSB data and MSB data. The control circuit also comprises a LSB circuit coupled to a plurality of LED channels. The LSB circuit is configured to supply LSB data to each of the plurality of LED channels.

LED display control circuit with PWM circuit for driving a plurality of LED channels

A display device is provided. The display device includes a transmitter, a plurality of first receivers, a plurality of second receiver modules, and a plurality of LED driver groups. The transmitter transmits at least one of a configuration data packet and an image data packet. Each of the configuration and image data packets includes a set of field information. At least one first receiver is coupled to the transmitter. Each of the plurality of second receiver modules is coupled to at least one of first receivers. Each of the plurality of second receiver modules includes a plurality of second receivers. Each of the second receivers reads the set of field information so as to determine whether the set of field information is designated thereto. Each of the plurality of LED driver groups is coupled to the at least one of the second receivers. Each of the plurality of LED driver groups includes a plurality of LED drivers. The set of field information includes information of a designated second receiver in the plurality of the second receivers.

Display device, method for transmitting data packet, and LED system

The present disclosure provides a circuit for discharging parasitic capacitance in a display panel with common-anode topology having a plurality of light emitters, as well as a circuit for charging parasitic capacitance in a display panel with common-cathode topology. In the common-cathode topology, the circuit includes a three-terminal device having a gate, a source, and a drain, wherein one of the source and the drain is electrically coupled to a common cathode of the light emitters, and a mechanism for controlling the three-terminal device, the mechanism being electrically coupled to the gate. Shortly after a previously selected light emitter is unselected, the mechanism turns on the three-terminal device to form a conductive path between the source and the drain. The mechanism turns off the three-terminal device after a voltage at the common cathode is increased to a predetermined voltage level or after a maximum period of time lapses.

Circuits for eliminating ghosting phenomena in display panel having light emitters

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Meizhou, China

Yutao Chen