The LED industry will also usher in the spring of “everythingâ€. (1) UV-CLED is expected to enter the bursting period from 2017 to 2018, and the global sterilization market output value will reach 500 billion US dollars. (2) The market size of infrared LEDs used for security monitoring will grow to 30 million to 40 million US dollars in 2017.
At present, the development of LED light sources in the industry mainly focuses on the visible light, including backlighting, lighting, etc. However, due to the price war, the price of lighting products that emphasize standardized specifications continues to fall sharply, leading to a severe impact on the LED industry.
With the visible light LED has become the Red Sea market, the application of invisible light such as ultraviolet light (UV LED) and infrared (IR LED) is being carried out one after another. Due to the technical entry threshold, many applications are applied to industrial or customized products. It is expected to avoid price competition with low unit price.
UV LED jumps to the star of tomorrow
UV-A LED takes off first
Ultraviolet LEDs have only begun to expand their applications in the last two to three years. Among them, the UV-A band is about 320~400nm, the UV-B is about 290~320nm, and the UV-C band is 240~290nm.
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The market potential of UV-A and UV-C bands is the largest. From the perspective of the manufacturing technology of LED components, the shorter the wavelength, the harder it is to do. Compared with the current competition of blue LED dies, it is difficult to make crystals of UVLED. The technical threshold is more than 10 times difficult, especially for short-wavelength manufacturers, which can be solved by saving money or digging corners.
In addition to die manufacturing is not easy, packaging technology is not good, because UVLED damage to packaging materials is greater than blue LED, especially the shorter the absorption of short-wave materials, it is also easy to damage the material, so the package end also needs to develop technical cooperation .
Firstly, in terms of UV-A LED products, UV-A is similar to current LED lighting, mainly to replace existing UV products, including power saving, long life and other characteristics that are driving the replacement of growth kinetic energy. Currently UV-A LED Mainly used in industrial products, such as printing curing, replacing exposure process products.
From the cost difference of UVLED, since industrial products require several kilowatts to tens of thousands of watts of power in power supply design, and must be used for a long time, UV-ALED will greatly reduce energy consumption, and LEDs have fast switching characteristics, which helps To save power consumption.
In addition, the temperature of the conventional UV lamp is high and the ozone problem is generated. Therefore, the factory must additionally install an air conditioning system to remove the ozone. Therefore, when the UV-ALED is applied to the curing or exposure manufacturing, it is not only the power cost of the lamp is saved. There is also the overall environment and air-conditioning costs.
However, LED light sources are single-wavelength and straight-through, while traditional UV lamps are multi-wavelength, which also increases the threshold for UV-A LEDs to enter the market. When the UV-A LED is to replace the lamp, since the original printing ink is designed according to multiple wavelengths, the single wavelength must first be mixed, and the light intensity, illumination distance, uniformity, etc. need to be considered as a whole. The accuracy of the illumination is also high, and the illumination angle is small, only about 1 to 6 degrees of parallel light.
Therefore, UV-A LED and LED lighting design are completely different, not only to test the capabilities of the packaging factory, but also UV-ALED must be made into a system product, designed according to different customer needs.
UV-C LEDs are more biased towards the medical cleansing industry. As mentioned above, UV-C LEDs have the highest degree of difficulty. Only a few Japanese or American manufacturers have related technologies, and they are all major chemical companies specializing in clean areas.
According to market estimates, the global overall sterilization market output value reached 500 billion US dollars, because the principle of UV-C is to use the absorption band to break the bacterial DNA strand, so that the bacteria will not proliferate to achieve sterilization function. This was originally applied to industrial wastewater treatment, although the conversion efficiency of UV-C LED is still very low, only about 1-2%, compared to 10-20% of the lamp, but the UV lamp can not be handheld products. .
Front Side (−): Silicon oxide + blue silicon nitride compound anti-reflection coating (PID Free) ; The front side is a half-cut design; The busbar head is a large double fork, and the pads of the busbar are intermittently stepped. The size of the head pad is 1.2 ± 0.15mm * 1.3± 0.15mm, and the middle pad of the busbar size is 0.8±0.15mm*1±0.15mm.
Back Side (+): Passivated layer (AlOx and SiNx) and Rear Contact (Al); the rear electrode is composed of 10 roots rear compound busbar and 160 roots rear Al fingers. The composite busbar is locally narrowed, and the width is 1.5 ± 0.3mm and 1.0 ± 0.3mm, respectively. 8 sections 1.45±0.3 mm silver anode, no laser pattern under the rear electrode. Silver electrode has round head, and silver electrode is 1.5±0.6mm hollow at both ends.
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