The Disadvantages Of LED Guide Plate Screen Printing Production Method Shallow Analysis

　The material used to make the light guide is Plexiglas or PC material, but more of the market is the use of acrylic sheet, because it is by far the most excellent quality of synthetic transparent materials, with unparalleled high luminosity, can improve the efficiency of the use of light. This acrylic and then through a series of processing can be called light guide plate, processing is mainly the way the network production.

　　Speaking of dot production, the market is familiar with the screen printing guide plate, many customers because of its low cost and use as a backlight. In fact, in the national vigorous development of energy saving and environmental protection projects, screen printing guide plate manufacturers should also comply with the development trend of environmental protection, and environmental protection industry alignment. The following is an analysis of the shortcomings of the production of screen printing guide plate.

　　As we all know, the production of screen printing guide plate can not be separated from the ink, which is an important material for the production. But the ink is the largest source of pollution in the printing industry, the annual global organic volatile compounds (VOC) pollution emissions caused by the ink has reached hundreds of thousands of tons, these organic volatile compounds, can form a more serious greenhouse effect than carbon dioxide, and in the sunlight will form oxides and photochemical smog, serious pollution of the atmosphere, affecting people's health.

　　In LED products, not only energy saving there is the advantage of long life. Long life is an important feature of LED products, in determining the premise of a good LED light source, the use of light guide plate almost determines the life of the entire LED products. LED in the lighting process inevitably generate heat, the heat for the screen printing light guide plate ink will cause a certain impact. There are relevant industry experts in the use of screen printing guide plate LED panel lights in three moon light test, the results appear close to one-third of the light decay degree. The reason for this situation is mainly the lighting process, the heat generated by the LED to the light guide plate ink volatilization, the stability of the light guide becomes worse, so that it is contrary to the LED products durable point of view.

　　In the screen printing process, you must also pay attention to the production environment. Strictly speaking, it must be produced in a clean room, which is defined as a room with air filtration, distribution, optimization, construction materials and devices, and is the basis for pollution control, without which mass production of pollution-sensitive ink screen printing light guide plates is impossible. After the production is completed, in the application needs to pay attention to the application environment of humidity, ultraviolet light on the screen printing dots, rain and fierce sunlight will accelerate the light decay phenomenon.

　　Undeniably, the screen printing dot design technology is very mature, the effect on the brightness and uniformity welcomed by many customers, but in view of the complexity of its production process and very high requirements for acrylic sheet flatness (screen printing requires acrylic sheet surface is very flat, otherwise it can not be printed, so they use extruded sheet, is to ensure flatness) so many companies are beginning to laser scribing or Laser dot design direction of transformation, which also makes to the laser guide plate products in the market and in the screen printing guide plate each other to compete for market share.