China is a big LED packaging country, it is estimated that the world's 80 number of LED device packaging concentrated in China, distributed in all kinds of U. S.-funded, Taiwan-funded, Hong Kong-funded, domestic-funded packaging enterprises. The market share of Chinese LED packaging enterprises is relatively high, and some Chinese enterprises have made great breakthroughs in the field of high-end LED device packaging. With the continuous maturity of process technology and the accumulation of brand reputation, China's LED packaging enterprises will play an important and leading role in China, a large LED application country.

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The following from the LED packaging industry chain of each link to explain these differences.

1LED chip difference

At present, there are about ten LED chip companies in mainland China, which started late and are not large enough. The annual output value of the largest LED chip company is about 0.3 billion yuan, and the average annual output value of each company is between 1 and 0.2 billion.

The performance of LED packaging devices depends on the LED chip to 50 degrees. The core indicators of LED chips include brightness, wavelength, failure rate, antistatic ability, attenuation, etc.

At present, most of the small and medium-sized chips of domestic LED packaging enterprises choose domestic brands. The chip performance of these domestic brands has a small gap with foreign brands, has a good cost performance, and can also meet the needs of most LED application enterprises. In particular, the performance of some chip brands has been comparable to that of foreign brands. Through the cooperation of packaging technology, it has been able to meet the needs of many high-end applications.

2 Packaging production and test equipment differences.

The main LED packaging production equipment includes solid crystal machine, wire bonding machine, sealing machine, spectral color separation machine, dispensing machine, intelligent oven, etc. Five years ago, LED automatic packaging equipment is basically the world of foreign brands, mainly from Europe and Taiwan, China only a small amount of semi-automatic solid crystal, wire bonding equipment supply. In the past five years, China's LED production equipment manufacturing industry has made great progress. Now, automatic crystal fixing machine, automatic sealing machine, spectral color separation machine, automatic dispensing machine, intelligent oven and so on are all supplied by manufacturers, which has a good cost performance ratio.

At present, among the LED packaging enterprises in China, the LED packaging enterprises in the forefront of the scale all have the most advanced packaging equipment in the world, which is determined by the advantage of backwardness. In terms of hardware level, LED packaging enterprises above the scale of China are the most advanced in the world. Of course, some higher-level test and analysis equipment needs to be further equipped.

3 Package design differences

LED package design includes shape structure design, heat dissipation design, optical design, material matching design, parameter design, etc. China's LED packaging design is based on the improvement and innovation of the existing design in foreign countries and Taiwan.

Design depends on good computer design tools, good test equipment and good reliability test equipment, but also based on advanced design ideas and product understanding.

At present, China's LED packaging design level still has a certain gap with foreign industry giants, which is also related to the lack of scale leading enterprises in China's LED industry, and the lack of organized and planned large-scale R & D design investment.

4 Packaging auxiliary material difference

Packaging auxiliary materials include bracket, gold wire, epoxy resin, silicone, mold strip, etc. Auxiliary materials are an important basis for the comprehensive performance of LED devices, and the quality of auxiliary materials can determine the failure rate, attenuation rate, optical performance, energy consumption and so on.

At present, the supply chain of packaging auxiliary materials in mainland China is relatively perfect, and most of the materials can be produced and supplied in mainland China. With the process of global integration, Chinese LED packaging enterprises have been able to apply to the world's latest and best packaging auxiliary materials.

5 Packaging process differences

LED packaging process is also a very important link. With the rapid development of China's LED packaging enterprises in recent years, LED packaging technology has risen to a good level, especially some high-end needs such as large LED display, wide color gamut LCD backlight, China's excellent LED packaging enterprises have been able to meet their needs, advanced packaging technology to produce LED has been close to the international level of similar products.

As China has become the world's LED packaging power, China's LED packaging technology in the rapid development and progress, with the world's top packaging technology gap is narrowing, and local products have surpassed.

We need to increase investment in research and development in the field of LED packaging technology, and enterprises and governments should pay attention to it. In fact, the gap between China's LED packaging technology and foreign countries is mainly in the gap between R & D investment. With the growth of China's national strength, we believe that China will become a powerful LED packaging country.