The use of special full-color LED display

High quality LED also need a good use method and the environment, it comes down to the following eight use points:
1, anti-static
Display assembly plant should have a good anti-static measure. Special anti-static, anti-static floor, antistatic soldering pen, prevent static radio pad, anti-static ring, anti-static clothing, humidity control, equipment grounding (especially cutting machine) is feet basic requirements, and to periodically with static specification.
2, wave soldering temperature and time
Shall strictly control the temperature of the wave front welding and furnace time, suggest temperature 100 â„?for: + 5 â„? highest do not exceed 120 â„? and the temperature rising demand, the welding temperature of 245 smooth â„?+ 5 â„? the welding time suggested that not more than 3 seconds, avoid by all means vibration or impact after furnace LED, normal temperature until state. The temperature parameters to wave welder periodically, this is LED by the nature of the temperature fluctuations, overheating or directly LED or cause damage LED quality, especially for small size hidden danger such as 3 mm round and oval LED.
3, design current value
The LED's nominal current as 20 mA, generally advised its largest use current for no more than 80% of the nominal value, especially for the point of the small screen space, because the radiation condition not beautiful, still should reduce the current value.
According to experience, because red, green, blue LED the decay rate inconsistencies, targeted blue, green LED to reduce the current value, to keep screen after a long time the consistency of the white balance.
4, mix light

The same kind of color different brightness LED to the file, or mixed lamp according to law of the design in discrete lamp plug drawing, to ensure that the whole screen lights each color brightness consistency. If problems arise, the process will be display screen is not the same local luminance phenomenon, directly affecting the led display display effect.
5, control the lamp of vertical degree
For straight insert LED to a furnace, when enough technology guarantee in vertical PCB LED. Any deviation will influence has set up good brightness LED consistency, appear not consistent color piece brightness.
6, thermal design
When work LED to high temperature hot, can affect the LED the decline of speed and stability, the PCB design, the heat of the ventilation cooling design will affect the performance of the LED.
7, virtual welding control
The led display in appear in bright led, often have more than 50% probability for all types of virtual welding of the cause, such as led tube welding, and IC tube feet virtual feet virtual welding, row needles row mother virtual welding. These problems to strictly in improving the process to improve and strengthen the quality inspection to solve. Before they leave the factory vibration test also can yet be regarded as a kind of good method of inspection.
8 and drive circuit design
Led display module on the drive circuit board drive IC arrangements will also affect the LED brightness. Due to the driver IC output current in PCB board too far, the transmission distance will make transmission path pressure drop is too large, affect the normal work of the voltage LED to lower its brightness. We often find display module of brightness LED around than among low some, it is for this reason. So to ensure the consistency of the screen brightness, be about to design good drive circuit distribution.

More from the selection and use of the widely used, the author introduces the related knowledge of special LED, full-color LED display is a product of the system integration, need LED display application package manufacturer and manufacturers, strengthening technical exchange close cooperation. China has now become the world led display manufacturing center, is to close the led display manufacturing power. So far, China a full color use LED the encapsulation of the level has greatly improved, many index has come close to the level of the Japanese manufacturers, individual index is beyond, it will greatly promote the development of the cause of the led panel.