LED (Light-Emitting Diode) display module and LED display screen

A display module and display module technology, applied in static indicators, instruments, etc., can solve the problem of inaccurate detection of LED chip junction temperature, inaccurate detection of LED chip junction temperature, real-time continuous monitoring of LED products on site, and inability to continuously monitor LED products. Monitoring and other problems, to achieve the effect of overcoming inaccurate LED chip junction temperature detection, good real-time detection, and accurate temperature detection

Active Publication Date: 2015-03-04
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The primary purpose of the present invention is to overcome defects such as inaccurate detection of junction temperature of LED chips and incapability of real-time and continuous monitoring of LED product sites, and provide an LED display module with accurate detection and real-time continuous monitoring of LED product temperature
[0007] The further object of the present invention is to overcome defects such as inaccurate detection of LED chip junction temperature and incapability of real-time continuous monitoring at the LED product site, and provide an LED display screen with accurate detection and real-time continuous monitoring of LED product temperature

Method used

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  • LED (Light-Emitting Diode) display module and LED display screen
  • LED (Light-Emitting Diode) display module and LED display screen
  • LED (Light-Emitting Diode) display module and LED display screen

Examples

Experimental program
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Effect test

Embodiment 1

[0025] An LED display module, the display module includes a substrate and one or more groups of RGB (red, green and blue) LED chips encapsulated on the front of the substrate by encapsulation glue, and the display module also includes an electrically connected signal data acquisition module, signal processing module, and signal data acquisition module are arranged on the substrate or directly connected with the positive pole and negative pole of the LED chip.

[0026] In this embodiment, the LED display module collects the temperature, voltage or resistance of the LED chip through the signal data acquisition module, and then outputs it to the signal processing module. The signal processing module processes the signal to obtain the real-time temperature of the LED chip. Inaccurate detection of chip junction temperature, incapable of real-time and continuous monitoring of LED product sites and other defects, has the advantages of accurate temperature detection and good real-time ...

Embodiment 2

[0028] On the basis of Example 1, such as Figure 1-2 As shown, this embodiment provides an LED display module using a temperature sensor 1 as a signal data acquisition module. The temperature sensor 1 is pre-embedded on the packaging PCB substrate 2 of the LED display module at a position close to the LED chip. The temperature sensor 1 is arranged as much as possible in the position of the LED chip 3 or the module where the temperature power consumption is relatively large, and is used to collect the working temperature of the LED chip 3 and output it to the signal processing module.

[0029] In the specific implementation process, the signal processing module is externally connected with a temperature display module, the temperature display module is equipped with temperature display software, and the temperature display software obtains the temperature of the LED chip 3 from the signal processing module, and then displays it through the display screen, so that it can be disp...

Embodiment 3

[0033] On the basis of Example 1, such as image 3 As shown, this embodiment provides an LED display module using a voltage acquisition circuit as a signal data acquisition module. The voltage acquisition circuit is connected to the positive pole and the negative pole of the LED chip 3 and an inverter To the diode 4 set, the signal data acquisition module is used to collect the voltage of the LED chip 3 and output to the signal processing module, the voltage acquisition circuit such as Figure 4 As shown, points A and B are respectively connected to the anode and cathode of the LED chip.

[0034] The working principle of this embodiment is: first measure the temperature coefficient K of the LED chip under a small current, and the temperature coefficient K represents the corresponding relationship between the voltage of the LED chip 3 and the temperature of the LED chip 3, and then under this current, the LED chip is collected by the voltage acquisition circuit. The voltage of...

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Abstract

The invention discloses an LED (Light-Emitting Diode) display module and an LED display screen. The LED display module comprises a base plate and one or a plurality of groups of RGB (Red Green Blue) LED chips packaged on the front face of the base plate through packaging glue, and further comprises a signal data acquisition module and a signal processing module which are electrically connected, and the signal data acquisition module is arranged on the base plate or is directly connected with anodes and cathodes of the LED chips. The LED display screen disclosed by the invention is formed by splicing the LED display modules; the LED display module and the LED display screen disclosed by the invention overcome the defects that the junction temperature detection of the LED chips is inaccurate and on-site real-time continuous monitoring and prewarning of LED products cannot be realized, and have the advantages of accurate temperature detection and good detection real-time property.

Description

technical field [0001] The invention relates to the field of LED chip junction temperature detection, and more specifically, to an LED display module and a display screen. Background technique [0002] LED has the advantages of small size, low energy consumption and long life, so it is widely used in many fields. Especially in the field of LED display and semiconductor lighting, on the one hand, LED lighting gradually replaces traditional incandescent lighting, and on the other hand, LED display screens gradually enter indoor display applications from outdoor applications. Whether it is an LED lighting product or an LED display application, in order to ensure the thermal reliability of the product, product thermal design must be carried out during the design stage of LED devices and LED display products to ensure that the product meets the thermal reliability requirements for long-term use. At present, the detection of LED chip junction temperature (LED chip operating tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/00G09G3/32
Inventor 李春辉董萌胡新喜董存军
Owner GUANGDONG VTRON TECH CO LTD
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