SETi & Seoul Viosys Begin Mass Production of Violeds UV LED Module That Sterilizes 99.9% of Coronavirus in 3 Seconds

COLUMBIA, S,C. & ANSAN, SOUTH KOREA (SEPTEMBER 14, 2020) – Sensor Electronic Technology, Inc. (SETi) and Seoul Viosys, (KOSDAQ: 092190) the leading global providers of UV LED technology and subsidiaries of Seoul Semiconductor, announced that they have started mass production of UV LED module designed to sterilize 99.9% of the coronavirus in 3 seconds using “Violeds,” a UV LED technology developed by Seoul.

Seoul Viosys is also developing a “Photon Shower” device that applies the UV LED technology to contribute to the safety of medical staff and patients who have been struggling amid COVID-19 pandemic.

The BIO research team at Seoul Viosys has conducted numerous research and development projects with in-house laboratories, cultivating and sterilizing various bacteria and viruses. In April 2020, a Violeds sterilization test conducted with a research group at Korea University demonstrated that Violeds sterilizes coronavirus.

The new “Photon Shower” device is a whole-body sterilization solution that uses only light, (photons) to sterilize various germs on the surface of peoples’ clothing in seconds when they enter the “Photon Shower.” This sterilization function can also be added to conventional air shower devices, which are used for dust removal only.

The “Photon Shower” using Violeds technology is expected to contribute to minimizing infections in hospitals in the future. According to the U.S. CDC (Centers for Disease Control and Prevention) statistics, more than 14,000 people die annually from hospital infections in the U.S. alone.

“There are countless industrial fields where the Violeds UV LED module, which sterilizes 99.9% of viruses on the surface of everyday objects in just three seconds, can be applied,” said Mike Berens, director of sales for SETi. “It has been supplied to U.S. escalator manufacturers to be applied to escalator handle sterilization solutions, and we expect global customer demand to increase in the future.”

Violeds is a UV LED technology jointly developed by SETi and Seoul Viosys through more than 20 years of research and development, and is now recognized as an advanced optical technology for the biomedical industry. It uses only light to sterilize, and can be optimally designed depending on the application by considering the following five factors:  wavelengths from 200nm to 400nm, distance to objects, light irradiation time, brightness of light (intensity), angle, and area of irradiation surface. This technology has already been applied to the International Space Station of the National Aeronautics and Space Administration (NASA), and is also applied to various home appliances and automobiles, including air conditioners, air purifiers, water purifiers and dishwashers.

Applying this technology, Seoul Viosys is producing an air purifier, the “VAC Series,” which is optimally designed to filter and sterilize 99.9% of bacteria and virus particles in 30 seconds; and a multi-sterilizer device, the “VSM+ Series,” which sterilizes the surface of everyday objects, removing 99.9% of bacteria and virus particles in 10 minutes.

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About SETi
Sensor Electronic Technology, inc. (SETi), a division of Seoul Semiconductor and Seoul Viosys, is a company based in Columbia, South Carolina, founded in 1999 by four Ph.D.s, for research and development of compound semiconductors in the United States. In 2005, SETi received the investment and R&D funding from Seoul Semiconductor and Seoul Viosys. For the development project, SETi is also working with the University of South Carolina and the University of California at Santa Barbara, adding depth to its research and development.
Currently, SETi is the only company in the world that can produce UV LEDs from 200nm to 430nm. To learn more, visit

About Seoul Viosys

Seoul Viosys is a full-line solution provider for UV LED, VCSEL (Vertical Cavity Surface Emitting Laser), the next-generation light source for 3D sensor and laser, and a single-pixel RGB “Micro Clean Pixel” for displays. Established in 2002 as a subsidiary of Seoul Semiconductor, it captured No. 1 market share in the UV LED industry (LEDinside, 2018). Seoul Viosys has an extensive UV LED portfolio in all wavelengths (200nm to 1600nm) including ultraviolet rays (UV), visible rays and infrared rays. It holds more than 4,000 patents related to UV LED technology. Violeds, its flagship UV LED technology, provides a wide range of industries with optimal solutions for robust sterilization and disinfection (UVC), skin regeneration (UVB), water/air purification, and effective cultivation for horticulture. In 2018, Seoul Viosys acquired RayCan, a leading optoelectronic specialist, to add the advanced VCSEL technology which supports smartphone facial recognition and autonomous driving, and has started its mass production. In January 2020, it introduced a disruptive “Micro Clean Pixel” that has the potential to be a game-changer in the display market. To learn more, visit

Media Contacts:
Seoul Semiconductor Inc.
North America
Andrew Smith
Tel: (901) 831-6614

Seoul Semiconductor Co., Ltd.
South Korea
Jeonghee Kim
Tel: +82-70-4391-8311

Sales Contacts:
Mike Berens

Dong Ju Kim

Marko Hofmann

14 Sep