As mentioned in last technology article, good LED chip doesn't mean 100% good LED. The finished LED quality is determined greatly by the LED package, i.e. LED encapsulation technology. And the finished LED quality is crucial to the quality of LED display screen.
It would cost a lot of time to list all the details of the package (encapsulation) technology because it is very complex process and in its dedicated profession field. Here we will list only some important aspects which we usually focus on.
It would cost a lot of time to list all the details of the package (encapsulation) technology because it is very complex process and in its dedicated profession field. Here we will list only some important aspects which we usually focus on.
1. All the packaging (encapsulation) materials should have similar coefficient of expansion. As we know even the indoor LED display screen would has possible more than 50℃ temperature in the full load working condition . So if the LED materials don’t have the similar expansion coefficient, the large variation of temperature will damage the construction of the LED.
2. Wire bond. Good LEDs always use gold wire, but some low end LED packaging (encapsulation) company use copper wire, or even aluminum wire instead for cost down. The gold wire has better conduction ability and better solderability, which means better reliability and lower power consumption..
3. Ultraviolet resistance ability. This is a very important point to outdoor LEDs. The materials which have better ability usually cost more. By the way, when using the same grade materials, DIP LEDs usually have better performance than SMD LEDs.
4. Control of process. In the process of packaging (encapsulation), we need all the parameters in the process to be controlled. This is a very high requirement to the quality control system and the engineering ability of the LED packaging (encapsulation) factory.
2. Wire bond. Good LEDs always use gold wire, but some low end LED packaging (encapsulation) company use copper wire, or even aluminum wire instead for cost down. The gold wire has better conduction ability and better solderability, which means better reliability and lower power consumption..
3. Ultraviolet resistance ability. This is a very important point to outdoor LEDs. The materials which have better ability usually cost more. By the way, when using the same grade materials, DIP LEDs usually have better performance than SMD LEDs.
4. Control of process. In the process of packaging (encapsulation), we need all the parameters in the process to be controlled. This is a very high requirement to the quality control system and the engineering ability of the LED packaging (encapsulation) factory.
In China there are a lot of LED packaging (encapsulation) factories. They provide different class LEDs even use the same wafers. And once the wafers are packaged, it is hard to identify which brand of wafers it is.
We a famous LED display screen manufacturer in China. In the past 8 years, we provide only the best quality led displays and the best service consistently .We have won deeply trust and got very good reputation all over the world.
If you're interested to learn more about why we are outstanding, please contact mydisplay2008@gmail.com
We a famous LED display screen manufacturer in China. In the past 8 years, we provide only the best quality led displays and the best service consistently .We have won deeply trust and got very good reputation all over the world.
If you're interested to learn more about why we are outstanding, please contact mydisplay2008@gmail.com
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