Seoul Viosys

Seoul Viosys is a subsidiary of Seoul Semiconductor (established 2002) and has held the largest global market share in the UV LED segment for six consecutive years (TrendForce 2025). With over 6,000 patents and its proprietary Violeds brand, the South Korean company stands at the absolute forefront of the industry.

The complete UV spectrum from a single source — this is the expertise that has established Seoul Viosys as the world's leading UV LED manufacturer. The South Korean subsidiary of Seoul Semiconductor covers UV-A, UV-B, and UV-C in various package formats: SMD, COB, and modules for a wide range of mounting configurations. Seoul Viosys is best known for its Violeds technology, which delivers high-radiance UV-C LEDs for effective disinfection of air, water, and surfaces. UV-A and UV-B products address photochemical curing, medical diagnostics, and analytical applications. Engineers benefit from precisely characterized emitters with defined peak wavelengths and high efficiency. For procurement teams, the broad portfolio means: covering multiple UV applications with a single supplier — from prototype through to series production.

Brochures

Here you will find bundled information on the topic as well as selected brochures with further content, technical background information, and practical solutions.