Packaging process
Household appearance is the name of the application site in the outdoor, so the table affixed products to accept the test of a fast-changing outdoor environment. This also makes the household appearance of the product packaging process more difficult, whether it is material matching, thermal stress, material and substrate adhesion, etc., have more stringent requirements. It is a difficult problem to keep a good combination of performance changes.
Potting Process
Traditional outdoor screen in the module filling colloid in the sun and rain and ultraviolet radiation will gradually aging, the characteristics of the colloid will break down, so that the circuit board and led lost the protective layer, or even after a long period of heat after the cold shrink to reach the waterproof effect, and the glue will pass through the gap into the screen body, the PCB board has a corrosive effect, affect the whole screen life and stability. If the table affixed to the outdoor triple use of potting process, because the lamp feet are too low, the glue is too thin, the consequences are more serious.
Waterproof moisture
In addition, waterproof and moisture-proof is always the key parameter of outdoor Full-color SMD. Although, with the development of LED chip technology and encapsulation, the brightness and protection level of the table stickers have been able to meet the needs of outdoor applications, but also need to continue to break through. For the household appearance pastes, the two big difficulties of waterproof and moistureproof are no longer the biggest difficulty that the outdoor table pastes the LED display to promote. However, in the market price is kingly, want to promote out, the beauty of things also need to be cheap.
Cost
For a long time, the high cost is one of the factors that can not completely replace the direct-insert lamp. Direct-Insert lamp with its low price occupies half of the outdoor display, compared with the traditional direct-insert lamp, the price of the table sticker is obviously higher. Table stickers products want to be widely used in outdoor display, price problem must be solved. In order to reduce the price, only in the technical constantly study, through technology to reduce costs is the effective way to solve.
