As a kind of light-emitting device with small power, long service life and low energy loss, LED has been in the country for nearly 20 years. Due to its special performance superiority, it is gradually replacing the original light-emitting device and used in industry. And all corners of the civilian use. Especially with the shortage of human energy, the market prospects are very impressive.
In recent years, LEDs have become more and more widely used in urban lighting engineering, industrial and civil construction industries. It is reported that the civilian LED chip has been successfully developed abroad, and it is expected that in the near future, your home decoration will also be illuminated with LEDs.
Overview
At present, there are more and more domestic LED manufacturers, mainly in the mid-range products accounted for nearly 50% of the market, about 40% of the high-end market is still occupied by foreign companies, which are mainly Hong Kong businessmen and Taiwanese businessmen. It can be seen that the market prospect of LED is still very impressive. At the same time, it provides opportunities for the development of domestic supporting materials manufacturers, such as chips, epoxy resin packaging materials, mold strips (die), brackets and so on.
At present, about 50% of the epoxy resin packaging materials are imported, mainly in the high-end market. Like Haisuo, Chuanyu, Lishang, EPFINE, etc., basically occupy the high-end market. Domestically, Shaohui Group produced LED epoxy resin encapsulants earlier. In recent years, there have been production companies such as Shunde ACR, Changsha Lanxing, Jiangyin Tianxing, etc., but domestic enterprises basically maintain the production of lower grade packaging materials, and the output is also Smaller, higher-end products still have a long way to go. The market welcomes powerful domestic companies and research institutions to develop and produce high-grade epoxy materials.
The research results of this package are only for the reference of the peers, hoping to play the role of throwing bricks and attracting jade, contributing to the development of domestic LED.
　 First, the choice of materials for the main agent
1 Epoxy resin: It is based on the principle of transparent colorless, low impurity content and low viscosity. Such as Daojing's 331J, South Asia's 127, Japan's Mitsui's 139, and Dainippon's EP4000 are all applicable, and the medium and low-end market adopts Hongchang's 127.
2 reactive diluent: generally use alicyclic double official reactive diluent is better, but basically can not be produced in China, or the unit price is too high, special occasions can be replaced by South Asia AGE, but AGE has strength after curing Impact, cross-linking is not enough. If the viscosity of the resin is low, it is also possible to choose not to add a diluent.
3 antifoaming agent: with good compatibility, good defoaming property, no low boiling point solvent as the criterion. Such as BYK-A530, BYK-066, BYK-141, Deqian 6500, etc. can be used.
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Guangzhou Cheng Wen Photoelectric Technology Co., Ltd. , https://www.nbcwdisplay.com