What Seoul Viosys does

Seoul Viosys is a South Korea-based public company (KOSDAQ: 092190) and wholly owned subsidiary of Seoul Semiconductor, founded in 2002 to develop optical semiconductor LED technology across the full wavelength spectrum from 200nm UV to 1400nm infrared/laser diodes. The company produces UV LED chips and modules under the Violeds brand, VCSEL (Vertical Cavity Surface Emitting Laser) components, and WICOP Pixel single-pixel RGB MicroLEDs, serving global home appliance manufacturers, automotive suppliers, industrial equipment makers, display manufacturers, and sensor/data communications providers. Its proprietary technology stack centers on WICOP (the world's first no-wire, no-package LED), the Violeds UV LED platform covering all wavelength ranges, and stack-type RGB 1-chip MicroLED technology, supported by more than 15,000 patents.

The company operates four primary revenue streams: (1) UV LED product sales for disinfection, purification, curing, and industrial applications; (2) VCSEL product sales for smartphone facial recognition, autonomous driving LiDAR, and 3D sensing; (3) WICOP Pixel MicroLED sales for digital signage, cinema virtual studios, automotive displays, and AR/VR; and (4) patent licensing income. Distribution combines direct enterprise sales from the Ansan headquarters, a global distributor network spanning 18+ countries, and OEM design-in partnerships with major home appliance brands. Seoul Viosys also manufactures through wholly owned production subsidiaries in Vietnam (Ha Nam City), China (Tianjin), and the United States, with R&D operations tied to acquired entities SETi (UVC, 2005) and RayCan (VCSEL, 2018).

Seoul Viosys claims the No.1 global market share in UV LED for six consecutive years and a top-3 global LED ranking (2021). Recent strategic activity includes the 2025 launch of an enhanced Violeds UV-C LED module with 20% improved quantum efficiency, a CES Innovation Award 2025 for WICOP Pixel MicroLED, and active 2026 partnership discussions with global optical communications leaders to enter the AI data center optical interconnect market. Patent enforcement remains a meaningful strategic lever, exemplified by a US federal court ruling affirming SETi patents.

Name

Seoul Viosys

Legal name

Seoul Viosys

Website

https://seoulviosys.com

Company type

Public

Founded year

2002

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Seoul Viosys is a South Korea-based public subsidiary of Seoul Semiconductor that manufactures UV LED, VCSEL, and MicroLED optical semiconductor components for global home appliance, automotive, industrial, display, and sensor/data communications OEMs.

Ownership category

akta.pro rank

Product category

UV LED and Optical Semiconductors

NAICS

Semiconductor and Related Device Manufacturing (334413), Semiconductor and Other Electronic Component Manufacturing (33441)

SIC

Semiconductors & Related Devices (3674)

akta.pro primary industry

Optoelectronics & Photonics (LED/Laser/Optical ICs) (HDAHAAAH)

akta.pro secondary industries

Optoelectronic / Photonics Foundries (Silicon Photonics/LED/Laser) (HDAHACAG), Smartphone Components & Modules (Displays, Cameras, Batteries, Sensors, RF modules) (CRACALAD)

Keywords

• UV LED manufacturing
• Optical semiconductors
• VCSEL components
• MicroLED displays
• Optoelectronic chips

Headquarters

HQ city

Ansan

HQ country

South Korea

HQ region

Asia

Offices18 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Supply Chain, Operations, Infrastructure, Marketing or Sales

Revenue model

1. UV LED Products: Sale of UV LED chips, packages and modules for disinfection, purification, curing, and industrial applications. Products are sold across home appliance, automotive, and industrial sectors worldwide.
2. VCSEL Products: Sale of Vertical Cavity Surface Emitting Laser components for smartphone facial recognition, autonomous driving, 3D sensing, and data communications applications.
3. WICOP Pixel MicroLED: Sale of single-pixel RGB MicroLED displays for digital signage, cinema virtual studio, automotive, and AR/VR applications.
4. Patent Licensing: Licensing of proprietary technologies including WICOP, Violeds, and other LED patents. The company actively enforces patent protection globally.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels4 records

Core offering

Seoul Viosys manufactures and sells ultraviolet and visible-light optical semiconductor devices, including UV LED chips and modules (under the Violeds brand) for sterilization, disinfection, air and water purification, skin regeneration, and insect attraction; VCSEL laser components for 3D sensing, facial recognition, LiDAR, and optical communications; and WICOP Pixel single-pixel RGB MicroLED chips for next-generation displays. The company sells these components primarily to OEMs in home appliances, automotive, mobile, display, and industrial equipment markets, with additional revenue from patent licensing.

Product overview

Seoul Viosys is a global LED company and full-line solution provider offering a comprehensive portfolio of optical semiconductor products built on proprietary technologies. The core offerings include: (1) Violeds UV LED technology - the company's flagship UV LED platform covering all wavelengths (200nm-1600nm) for disinfection, purification, skin regeneration, and industrial curing applications; (2) VCSEL technology for 3D sensing, facial recognition, LiDAR, and high-speed data communications; (3) WICOP Pixel - the world's first single-pixel RGB MicroLED chip enabling ultra-high resolution displays; and (4) comprehensive opto-semiconductor solutions spanning UV, visible, IR, and laser diodes. The company has achieved world's No.1 market share in UV LED for 6 consecutive years and holds over 15,000 patents globally, targeting markets including home appliances, automotive, industrial equipment, display technologies, and AI data center communications.

Differentiator

Problem solved

Functional benefit

Brands

• Violeds: Flagship UV LED technology brand providing solutions for sterilization, disinfection (UVC), skin regeneration (UVB), air and water purification, insect attraction, and plant growth promotion.
• WICOP Pixel
• WICOP
• Acrich
• SunLike
• nPola
• MOSCLEAN

Products and services

• Violeds UV LED Technology Proprietary UV LED technology platform covering all wavelength ranges (200nm to 1600nm) including UV-C for sterilization/disinfection, UV-B for skin regeneration, and UV-A for curing applications. Features eco-friendly, low-power, and ozone-free advantages designed to replace traditional mercury lamps in home appliances, industrial equipment, water purifiers, air purifiers, and automotive systems.
• VCSEL (Vertical Cavity Surface Emitting Laser) Vertical Cavity Surface Emitting Laser technology acquired from RayCan for 3D sensing applications including facial recognition in smartphones, autonomous driving, LiDAR sensors, proximity sensors, and high-speed data communications including 25Gbps VCSELs for 5G communication.
• WICOP Pixel MicroLED World's first single-pixel RGB (RGB 1-chip) MicroLED technology based on proprietary no-wire WICOP technology. Enables ultra-fine pitch displays for digital signage, cinema virtual studios, automotive displays, and AR/VR applications with consistent color from any viewing angle.
• Opto Semiconductors Full-spectrum optical semiconductor solutions covering wavelengths from 200nm to 1400nm, including UV, Blue, Green, Red, IR, and VCSEL chips to modules. Proprietary technologies include VCSEL, WICOP (no-wire, no-package), and MicroLED-based photonic solutions for AI data center optical communications.
• Enhanced Violeds UV-C LED Module Enhanced UV-C LED module within the Violeds product family delivering 20% improved quantum efficiency, targeted at water purification, industrial curing, and healthcare sterilization applications as a mercury-free alternative to legacy UV sources.

Quantifiable outcome

• 99.99% disinfection of COVID-19 Omicron variant in 1 second
• +4 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Global Optical Communications Leaders (unnamed)coreStrategic or Co-development Partner · 27 April 2026Active discussions with two global leaders in optical communications for joint technology development, joint ventures, or OEM manufacturing to serve the AI data center optical communication market valued at $60 billion.

Scale indicators11 records

Recent moves7 records

Expansion highlights5 records

Emerging players

• TRUMPF Photonic Components: German manufacturer of VCSEL and photodiode components for consumer electronics and automotive sensing. Emerging direct competitor in the same VCSEL-for-3D-sensing niche where Seoul Viosys competes via the RayCan platform.

Broad incumbents

• Signify (Philips Lighting): Global lighting giant offering LED-based fixtures, modules, and horticultural lighting systems. Comparable to Seoul Viosys as a downstream purchaser/competitor in the visible and UV LED space, though with a far broader finished-goods portfolio.
• II-VI / Coherent Corp. U.S. photonic materials and compound semiconductor platform serving datacom, 3D sensing, and industrial laser markets. Direct comparator for Seoul Viosys's VCSEL and emerging AI data center optical communications roadmap.
• Samsung LED (Samsung Electronics): Vertical LED operation of Samsung supplying LEDs for displays, automotive, and general lighting. Serves as a broad incumbent reference point for Seoul Viosys's automotive and display-oriented product lines.

Direct peers

• Seoul Semiconductor: Parent company of Seoul Viosys and the originating entity for WICOP and Violeds technologies. Operates in the same LED and optoelectronics space, with overlapping chip and module portfolios for UV, visible, and IR wavelengths, and shares the same Ansan headquarters ecosystem.
• Cree LED (Wolfspeed LED business / Smart Global Holdings): Cree/Wolfspeed develops LED chips (including UV) and SiC/GaN power devices. Overlaps with Seoul Viosys on the UV LED chip side and competes in performance-driven wavelength-specific LED applications.
• Lumileds: U.S./Dutch LED company producing LEDs, UV LEDs, and automotive lighting components. Direct peer across UV LED sterilization, automotive headlamps, and consumer-appliance integration use cases where Seoul Viosys also operates.
• Lumentum Holdings: U.S.-based photonic semiconductor company specializing in VCSEL arrays, laser components, and optical modules for 3D sensing and data communications. Direct comparator for Seoul Viosys's RayCan-acquired VCSEL business serving AI data centers and 3D sensing.
• Nichia Corporation: Japanese LED pioneer and historical global #1 in LED chip production. Competes directly with Seoul Viosys across UV LED, general lighting LEDs, and visible-spectrum optoelectronic devices, including automotive and display applications.
• ams OSRAM: Austrian-headquartered optoelectronics leader producing LEDs, VCSELs, and laser components. Directly comparable to Seoul Viosys across UV LED (Osram), VCSEL for 3D sensing, and visible/IR opto-semis for automotive and consumer applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/seoulviosys

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Seoul Viosys