The disadvantages of the analyses of LED screen printing production of light guide plate way
Both applications in lighting and backlight applications, the guide plate and the matching of the LED light source is the best, in compatible products, high quality and inferior guide plate has an important influence for the LED products, the main performance in brightness and uniformity.Under the same module, different light guide will have different effect, high quality light transmittance of light guide plate is significantly higher than the poor, also can prevent the bright spots, dark area.
Make the guide plate material is organic glass or PC material, but the market more are using acrylic, because it is so far the synthesis of intermediate the most excellent transparent material, has the incomparable high brightness, can raise the use efficiency of light.After the acrylic and then through a series of processing can be called guide plate, processing way is mainly network production.
About network production, familiar is the printing guide plate on the market, many customers because of its low cost and use as a back light use.Actually otherwise, under the country to develop the energy conservation and environmental protection engineering, the manufacturer of screen printing guide plate should also comply with the trend of the development of environmental protection, aligned with the environmental protection industry.The following screen printing production of light guide plate of faults were analyzed.
As is known to all, screen printing production of light guide plate without ink, this is one of the important material production.But ink printing industry is the largest pollution source, caused by the ink - a - year global organic volatile (VOC) emissions has amounted to hundreds of thousands of tons, these organic volatile, can form the greenhouse effect is more serious than carbon dioxide, and the sun to form oxides and light chemical smog, seriously pollutes the atmospheric environment, affect people's health.
LED products, not only energy saving and long life.Long life is an important characteristic of LED products, in determining the premise of a good LED light source, the use of the guide plate almost determines the whole service life of the LED products.In LED lighting is inevitable in the process of to generate heat, this heat for screen printing ink will cause certain effect of light guide plate.Related industry experts in the use of screen printing in the LED panel light guide plate for three moons light test, the results appeared close to one-third of the droop degree.The causes of this situation is mainly in the process of lighting, LED the heat to the ink of volatile of light guide plate, light stability, which contradicts with LED products durable.
In the process of screen printing, also must pay attention to production environment.Strictly speaking, you must for production in the clean room, clean room is defined as a air filtration, distribution, optimization, construction materials and equipment room, is the basis of pollution control, no clean room, contamination sensitive ink printing can't batch production of light guide plate.After completion of production, in the applications need to pay attention to the application environment humidity, ultraviolet radiation influence on screen printing dot, rain and sunshine violent weather will speed up the light failure phenomenon.
There is no denying the fact that screen printing the design of the network technology is very mature, effect on the brightness and uniformity was welcomed by many customers, but in view of the production process of the complex and the requirement of acrylic flatness is very high (acrylic surface is very flat screen printing requirements, otherwise unable to printing, so they use sheet extrusion, in order to ensure the flatness) so a lot of enterprises have begun to transition towards the direction of the laser marking or laser dot design, it also makes it to the laser guide plate products in the market and fight for market share each other in screen printing guide plate.