According to the TrendForce 2025 Deep UV LED Market Trends and Product Analysis report, new applications in areas such as air conditioning, air purification and dynamic water sterilization are gradually emerging, driven by the stable demand of the photocuring market and the advancement of UV-C LED technology and price optimization. TrendForce predicts that by 2029, the total output value of the UV LED market will climb to US$338 million. Most UV LED manufacturers are optimistic about the market outlook in 2025, especially with the help of UV-C LED technology breakthroughs, which are expected to enter the dynamic water sterilization market. In terms of overall development, UV LED is expected to achieve at least 10% growth. Compared with traditional UV lamps, UV LEDs have longer service life and more advanced optical design advantages. Leading manufacturers such as Nichia , Seoul Viosys , Violumas and UVT have launched full-band LED product lines that dominate UV-A, UV-B and UV-C, aiming to provide comprehensive wavelength solutions to gradually replace the needs of UV lamp customers. As technology improves year by year, the application areas of deep ultraviolet LEDs continue to expand, not only focusing on sterilization and purification, photomedical treatment and plant lighting, but also improving the quality stability of light-cured products. 

UV LED application market analysis

Curing

The photocuring market is expected to grow in applications such as printing, offset printing, 3D printing, and resin and adhesive curing. In the long term, as UV-B and UV-C LED technologies mature, they are expected to enter the photocuring field and further improve the stability of product quality by reducing their oxygen inhibition effect.

Photocatalyst air purification (photocatalytic air purification)

UV-A LED combined with photocatalyst technology can achieve air purification function, and can also play a sterilization effect after long-term use. This technology has been steadily evaluated in home appliances such as refrigerators, air conditioners, wardrobes and lighting. TrendForce predicts that the output value of the photocatalyst air purification market will continue to grow.

Medical, Life Sciences and Bio-Sensing

The miniaturization of UV LED light sources is very suitable for the development of portable phototherapy equipment. As UV-B LED technology matures, Japanese medical equipment manufacturers have begun to adopt this technology and promote related medical certification. Although the certification process is strict and necessary, with the joint efforts of medical equipment manufacturers and UV LED suppliers, the market potential is gradually emerging. In addition, the demand for UV-A, UV-B and UV-C LEDs in the fields of medicine, life sciences and biosensing has increased in Europe, North America and other places.

Sterilization and purification (disinfection/purification)

The mass production lamp plan for new projects related to air conditioning, air purification and dynamic water disinfection has been postponed to 2025-2027. Compared with UV tubes, the long life and simple optical design of UV LEDs have become significant advantages. When the photoelectric conversion efficiency (WPE) of UV-C LEDs in the 270-280nm band reaches more than 7%, or more than 5% in the 260-270nm band, and passes NSF/ANSI 55 Class A or Class B certification, it is expected to enter the industrial and commercial dynamic water irrigation market. Based on the technological progress of major manufacturers, TrendForce predicts that the product development and sample testing phase for this market will be launched between 2025 and 2028, and the compound annual growth rate from 2024 to 2029 is expected to reach 15%.

UV-C LED Packaging Trends

TrendForce presents the lighting survey for 2025, including major manufacturers such as ams OSRAM, Nichia, Violumas , NKFG, UVT, LITEON and Y-CRYSTAL will launch UV-C LED single crystal package products ≥100mW. In addition, Asahi Kasei (Crystal IS) and Toyota Gosei also plan to release similar products in fiscal 2026. Single crystal packaging solutions are favored by smaller packaging volume, better current distribution, more uniform radiation light type and lower total design cost. As the price of UV-C LED gradually decreases, the final customer's priority for single crystal package products will be further improved. Deep ultraviolet LED (including UV-B and UV-C LED) technology is driving the development of LED application scenarios. From light curing to air purification, to medical and dynamic water sterilization, UV LED is gradually replacing traditional UV lamps with its technological advantages and market potential, becoming a new focus of industry development.

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