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Raw Materials of High Quality LED Display

2018-11-28 www.myddisplay.com

At present, China's LED display industry standard "LED display general specification SJ/T11141", in this industry standard and "electronic measuring instrument 2S reliability test GBll463" on the LED display reliability test, in fact difficult to achieve the reliability requirement of MTBF is not less than 10,000 hours, and it cannot meet the requirements of high reliability LED display. In order to achieve high reliability of the LED display, the supporting product materials must be greatly.


Meiyad indoor High Quality LED Display


1) LED tube


LED tube is the key component of LED electronic display, and should adopt the mature and reliable LED products.Features of it as follows:


Good stability and small dispersion.

High ESD index: can withstand volt more than 4000V under HBM mode.

Small attenuation: less than 5% in 1000 hours.

Strong pressure resistance: Vr=10V, Ir<2uA.

Brightness, wavelength, and angle consistency are high.

Good light distribution: perfect light distribution curve.

It is resistant to temperature, humidity and UV rays and is suitable for outdoor environments.


2) Cabinet

 

The whole steel plate or aluminum is used, and the door opening structure is adopted. The top of the cabinet is made of pins and the bottom is made of guide sleeves to ensure precise positioning between the cabinet.


The overall protection of the cabinet complies with the IP66 standard. The structure should fully consider heat dissipation.


3) Switching power supply

 

The LED display power supply adopts the well known brand switching power supply module that has passed the certification. All switching power supplies have undergone rigorous testing,screening and aging. Ensure full compliance with international safety and quality certification requirements to meet the long term stability and reliability of the display. Under rated working conditions, ensure that the service life is greater than 10 years.


4) Connector

 

Connectors are important connecting devices in the system. High quality connector products should be used to ensure the thickness of the pure gold plating of the connector and maintain the best electrical connection performance, ensure the system's good electrical connection performance under high temperature and high humidity environment, which can make the system run stably and reliably for a long time.


5) PCB board

 

The circuit board is made of flame retardant epoxy sheet, with reasonable design layout and trace specification to meet the requirements of electromagnetic compatibility and circuit stability. Processing manufacturers should choose products produced by well-known manufacturers.


6) Drive Chip IC

 

The drive circuit adopts the constant current drive chip of international famous brand. Maintaining high precision constant current output and high reliability over a wide temperature range bring in significant improvements in display uniformity and reliability. 


The main materials of the LED display system should be certified by CE, FCC, UL, CCC, etc.


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