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The latest meet the highly reliable LED display design requirements

Date: 2013-12-11
Views: 24

LED display technology development, customer awareness of its deepening, new customers on the LED display stability, reliability requirements are getting higher and higher. So the manufacturer in order to meet the requirements, we must design a more reliable LED display.

 

      At present, the 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, it is difficult to achieve MTBF Not less than 10,000 hours of this reliability requirements, but can not meet the requirements of high reliability LED display. And to do with a high reliability of the LED display, supporting product materials to be greatly improved, the design requirements must be included into the heat, reasonable and advanced.

 

      First, supporting product materials

1, LED light tube.

LED LED LED display is the key device, should be used to mature and reliable LED products. Features:

Qualitative good, small discrete.

ESD indicator high: HBM greater than 4000V.

Attenuation: 1000 hours less than 5%

Pressure resistance: Vr = 10V, Ir <2uA

Brightness, wavelength, high angle consistency.

Excellent light distribution effect: perfect light distribution curve.

Resistant to temperature, moisture and UV, suitable for outdoor environments.

 The following are the same as the "

2, the box.

The overall use of steel or aluminum, using the door structure. The top of the box with a pin and the bottom of the use of guide sleeve to ensure accurate positioning between the box.

The overall protection of the enclosure complies with the IP66 standard. The structure should take full account of heat dissipation.

The following are the same as the "

3, switching power supply.

Display power supply through the certification of the famous brand switching power supply module, all the switching power supply have been rigorous testing, screening, aging. To ensure full compliance with international safety and quality certification requirements to meet the long-term stable and reliable display requirements. Under rated working conditions. To ensure that the service life of more than 10 years.

The following are the same as the "

4, connector.

The connector is an important connection device in the system. Should use high-quality connector products to ensure that the connector of the pure gold coating thickness, to maintain the best electrical connection performance. To ensure that the system in high temperature, high humidity environment, good electrical connection performance,

Can make the system long-term stable and reliable operation.

The following are the same as the "

5, the circuit board.

The circuit board adopts flame retardant epoxy board, the design layout is reasonable, the wiring specification, meet the electromagnetic compatibility and the circuit stability request. Processing manufacturers should choose well-known manufacturers of products.

The following are the same as the "

6, drive chip IC devices.

Drive circuit using the international famous brand of constant current driver chip. In the large temperature range, to maintain high precision constant current output and high reliability, can make the display uniformity and reliability significantly improved. Display system The main material should be CE, FCC, UL, CCC and other certification.


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