[Text / high-tech LED Gan Qin] Due to factors such as price decline, LED profitability this year has shown a significant decline compared with last year. Among them, the price decline of LED packaged devices has not been avoided, and the gross profit is not the same day. And the language.
Faced with the pressure of profit tightening, most of the choices of packaging factories are to expand production and further reduce costs. Some enterprises have also developed new profit growth points, such as the UV market, by developing new markets with relatively high gross profit.
Since 2014, Hongli Optoelectronics announced that it has been involved in the research and development and production of deep-UV LED packaging products. In the same year, it launched the full-UV (UVA/B/C) LED packaging products. By 2015, Hongli Optoelectronics' UVA and UVC packaging products entered. Mass production stage.
Guoxing Optoelectronics, which is paying more and more attention to the diversified research and development of products, is also enriching the UV LED device product series. After the company launched the UV LED device at the end of 2014, it has launched this year in order to meet the requirements of different wavelengths and sizes of UV applications. COB 1215, 3535, 6363 series products.
It can be seen that domestic enterprises are all involved in this field. However, the industry pointed out that as far as the overall domestic layout of "UV" technology is concerned, it is still only in the "testing water" stage, and there is still a long way from "mature". A long way to go.
The industry pointed out that because the ultraviolet band is relatively short, it is very difficult to make the optical power, stability and life index of the chip very difficult. In the production process of the ultraviolet chip, the type, proportion and time of the gas charged are quite different from those of the blue chip. Many manufacturers can only produce a few epitaxial wafers in one furnace. In terms of price, the UV chip is hundreds of times more than the blue chip.
Wu Yongsheng, general manager of Xinguanglian Semiconductor, said, “The UV LED application is widely used, but it is difficult to achieve ultrashort wave power. The existing MOCVD cannot achieve high impurity AL, and it is necessary to develop equipment with a reaction chamber temperature greater than 1400 degrees.â€
Wu Yongsheng pointed out that the price of UV LEDs is difficult to drop because of the lack of high-temperature MOCVD that can be commercialized. It is difficult to reduce the cost of chips by relying on the existing small-scale equipment on the market.
From this point of view, higher technology thresholds and scarce equipment make UV LED companies need a lot of investment to maintain R&D costs and equipment investment. At this stage, technology and prices have not yet reached the stage of large-scale market entry.
At present, the application of ordinary ultraviolet light is relatively limited. The wavelength of common ultraviolet germicidal lamps is 250 nm. At present, there are only a few in China, and the power is relatively small, and the price does not have much advantage.
"In the deep ultraviolet part, foreign companies are currently in the forefront of technology. For this field, personally think that it is impossible to do deep ultraviolet LED estimation through sapphire." Cold East believes that aluminum nitride (AIN) can be used. The substrate is used to make deep ultraviolet LEDs, but there are not many enterprises that have been tried at present, and it is also necessary to integrate production, education and research.
It is undeniable that under the drive of high profits, more and more manufacturers will enter the UV market in the future, but in general, although the UV LED market has a bright future, it also has a long way to go. Domestic companies still need a certain amount of time to settle and brew, waiting for the outbreak of the market.
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