In recent years, with the continuous development of LED technology and the increasing competition in the industry, major manufacturers have begun to turn to niche market to find a new blue sea. As a sub-area with high gross profit, UV LED has developed rapidly and attracted great attention in the industry. Domestic and foreign manufacturers have invested in the layout.
UV LED is widely used and has great potential for market development.
What is UV LED? UV LED refers to the LED whose light-emitting wavelength is less than 400 nm. According to the wavelength, it can be further divided into UVA (320-400 nm), UVB (280-320 nm), and UVC (200-280 nm).
At present, the most widely used products are UVA products, mainly used in glue curing, PCB exposure, printing and other industrial fields, and mosquito trapping, nail, anti-counterfeiting detection, Photocatalyst purification and other civil fields. The threshold of UVB and UVC is higher, especially UVC. UVB is mainly used in phototherapy, while UVC is mainly used in sterilization.
According to the latest "Deep Ultraviolet LED Application Market Report 2019 - Sterilization, Purification and Water Treatment Market" issued by LED Inside, Jibang Consulting Research Center, the revenue target of Ultraviolet LED manufacturers in 2018 failed to achieve the expected explosive growth, but still showed a steady increase due to the global recession. Looking ahead to the application market demand, besides the stable growth of the curing market, surface/air sterilization and purification, static water sterilization and mobile water sterilization are the main growth momentum in the future. It is estimated that the market output value of ultraviolet LED will reach $911 million in 2023.
With the entry into force of the Minamata Convention, the production and supply of primary Mercury will not be possible in the future. Because UV LED does not contain mercury, is environmentally friendly and safe, and has the characteristics of fast start-up and high efficiency, its market development potential is huge in the future.
The application of UV LED in new fields has been continuously expanded.
With the continuous development of UV-LED technology, the application of UV-LED in some new fields has been expanded.
Zhao Sen, General Manager of National Star Photoelectric Non-Visual Light Source Division, introduced: "In the field of photocatalyst, UV LED irradiation photocatalyst can decompose the organic pollution sources (formaldehyde, VOC) in the air into non-toxic and non-polluting water and carbon dioxide, and oxidize inorganic pollutants (NOx, NH3) into NO3-, thereby achieving sterilization, decomposition of air pollutants and other functions."
In addition, UV LED can be used for plant growth. In recent years, indoor and greenhouse planting has developed vigorously, which has solved the problem of lack of fresh vegetables in winter in cold areas. However, some indoor and greenhouse vegetables and fruits listed on the market have some quality problems such as dark color, not fresh taste and so on. There are many reasons, but the lack of light, especially the lack of ultraviolet components in normal light, may be the key factor. It was found that supplementing a certain dose of UV radiation in greenhouse and other indoor plants could affect plant growth and physiological activities, and thus improve plant quality.
At the same time, the application of UV LED in the field of phototherapy is gradually popularized. UVB can effectively treat psoriasis, vitiligo and other skin diseases. Compared with the traditional NB UVB ultraviolet phototherapy instrument and excimer laser therapy instrument, UVB LED can be more miniaturized, easy to carry and use, and its advantages are more prominent.
Nowadays, with the continuous maturity of UV LED technology and the gradual decline of cost, UV LED will usher in new development opportunities.
Manufacturers Actively Layout UV LED
In this regard, domestic and foreign manufacturers are competing for layout, especially high-threshold UVC LEDs, such as LG Innotek, Seoul Viosys, DOWA, Guoxing Optoelectronics, Qingdao Jiesheng, Hongli Bingyi, 100 million Optoelectronics, etc. are actively developing UVC products.
In the field of UV LED, National Star Photoelectric has laid out UVA/UVB/UVC in an all-round way. Since 2016, near-ultraviolet LED, deep-ultraviolet LED and modules have been introduced successively. The products have wide wavelength range and high reliability.
National Star UV LED series products, using high reliability materials, excellent packaging technology, have lower thermal resistance, higher light output, better air tightness. Taking silica gel 3535 series as an example, its combination of nano-packaging technology greatly reduces the thermal resistance of the device, which is more than 40% lower than that of conventional packaging products. The device has better heat dissipation and longer life. At the same time, a more reasonable primary lens package is designed, and the optical power is increased by more than 6% compared with conventional products.
At present, National Star UV LED series devices have been widely used in sterilization, phototherapy, curing, photocatalyst, plant growth, mosquito trapping, nail and other fields. The market feedback is good. At present, we have established partnerships with many well-known manufacturers.