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To improve the quality of LED display-HongYe silicone

Writer:TcoglorSource:www.szrl.net Date:2013-04-23

 LED silicone analysis is currently possible, we are more concerned about the development of LED silicone lighting, LED silicone technology have improved the lighting in the area of ​​application is very extensive, such as silica gel lighting, LED wall washer encapsulants, LED street lamp power encapsulants of LED lighting products currently on the market are very optimistic, but in fact the LED but it is still the main display market, after all, the LED display after a long period of development, the current relative to the LED lighting industry for more complete mature. Universal crowd of purchase display are more like the LED display, following Shenzhen LED silicone to talk about how to control and improve the quality of full color LED display? What is the important indicator reflecting the quality of the full color LED display LED?
The first LED device as the most critical components of the full-color LED display, because there are three: First, the LED is full color machine used in the largest number of devices per square meter will be used only a few thousand to tens of thousands of LEDs; The LED is to determine the optics of the entire screen display of the main body of the performance evaluation of a direct impact on the audience display; again, the LED display the overall cost of the proportion of the largest, ranging from 30% to 70%. LED choice determines the quality of more than 50% of the entire display. If not other parts of the good LED, display, even the best can not make up the display quality defects.
Reflect the quality of the full color LED display LED indicators are:
1, the attenuation characteristics
Red, green and blue LEDs With the increase in working hours, the light attenuation characteristics. The pros and cons of the LED chip, The quality of the auxiliary materials and packaging technology level of the decay rate of the LED. In general, after 1000 hours, 20 mA at room temperature light test, the attenuation of the red LED should be less than 10%, blue, green LED attenuation should be less than 15%. Consistent attenuation of red, green, blue, full-color LED display white balance impact, thereby affecting the display fidelity.
2, the failure rate
The full-color display by the tens of thousands or even hundreds of thousands of clusters of red, green, blue LED pixels composed of any one color of LED failure will affect the display of the overall visual effect. In general, industry experience in the LED display assembly to the aging failure rate in the 72 hours before shipping should be no higher than three ten thousandths (LED device itself causes the failure).
3, anti-static capacity
LEDs are semiconductor devices sensitive to static electricity can easily cause static failure, antistatic ability is critical to the life of the display. In general, LED body static mode test failure voltage should not be less than 2000V.
4, consistency
Full-color display makes up numerous red, green, blue LED pixels, the brightness of each color LED, the consistency of the wavelength determines the brightness uniformity of the entire display, white balance, consistency, chroma consistent sex. Generally speaking, the display manufacturers require device suppliers to 5nm in the wavelength range and 1:1.3 brightness range of LEDs, these indicators reach by the device supplier through the color separation machine grading. Voltage consistency is generally not required.
5, the brightness
LED brightness is an important determinant of the brightness of the display. LED brightness higher the margin the greater the current, on the saving power, to keep the LED stability is good. The LED has a different angle values, the case of chip brightness has been set, the smaller the angle, the brighter the LED, but the smaller the viewing angle. 100 degree LED general should be chosen in order to ensure a sufficient display of perspective. Different spacing and different line of sight of the display brightness, angle, and the price to find a balance.
After all, the LED display is now more expensive, the quality concerns will inevitably increase. Indeed present, the LED display market, product quality varies uneven, brand confusion, Shenzhen LED silicone to remind you to buy the display of time to pay attention to check the quality, but also to choose the products with high brand awareness in order to avoid quality problems.

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Keywords for the information:LED silicone  LED silicone rubber  LED silicon 

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