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LED (Light-Emitting Diode) control device and LED control method

A control device and control signal technology, which is applied in the field of control, can solve the problems of affecting the service life of LED display screens and increasing LED loss, and achieve the effects of shortening the time of weak light emission, reducing LED loss, and eliminating afterimages

Active Publication Date: 2014-10-29
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The appearance of this situation will increase the loss of the LED and affect the service life of the LED display

Method used

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  • LED (Light-Emitting Diode) control device and LED control method
  • LED (Light-Emitting Diode) control device and LED control method
  • LED (Light-Emitting Diode) control device and LED control method

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Experimental program
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Embodiment Construction

[0013] An embodiment of the present invention provides an LED control device, which is used for eliminating afterimages on an LED display screen and prolonging the service life of the LED display screen. The embodiment of the present invention also provides related LED control methods, which will be described respectively below.

[0014] Wherein, one LED display screen may include multiple LEDs, and the embodiment of the present invention only uses the first LED (D1) and the second LED (D2) as examples for description.

[0015] For the basic structure of the LED control device provided by the embodiment of the present invention, please refer to figure 1 ,mainly includes:

[0016] The control module 101 is configured to receive a control signal, and control the power supply end to be turned on or off according to the control signal, and the power supply end is used for the first LED (D1) and / or the second LED (D2) in the LED control device powered by;

[0017] The discharge ...

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PUM

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Abstract

The embodiment of the invention discloses an LED (Light-Emitting Diode) control device. The LED control device is used for eliminating ghost shadows, so that the picture quality of an LED display screen is improved, and the service life of the LED display screen is prolonged. The LED control device comprises a control module and a discharging module, wherein the control module is used for receiving control signals and controlling the on or off of a power supply end according to the control signals, and the power supply end is used for supplying power for a first LED (D1) and / or a second LED (D2) in the LED control device; the discharging module is used for releasing electric charges of the anode of the first LED (D1) and / or the anode of the second LED (D2) when the power supply end is off by the control module. The embodiment of the invention further provides a corresponding LED control method and the corresponding LED display screen.

Description

technical field [0001] The invention relates to the control field, in particular to an LED control device and an LED control method. Background technique [0002] With the development of optoelectronic technology, the application of LED display is becoming more and more extensive. The current LED display screen is obtained by integrating multiple LEDs. Each LED is turned on and lit when its power supply end is turned on, and the residual charge on its anode is slowly consumed and then extinguished when the power supply end is turned off. Generally, LED display screens often have to withstand high-frequency switching currents above 2KHz when they are working. Due to the high switching frequency of the current, the lighting period of the same LED is very short, and the LED does not have enough time to discharge the residual charge of the anode. Even if the power supply end is turned off, the LED still emits light weakly, which makes the whole picture look like afterimages and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
Inventor 陈和平许景翔
Owner GUANGDONG VTRON TECH CO LTD