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Quantum Semiconductor International Co., Ltd.
South Korea
Optoelectronics & Displays: LEDs, LCDs, OLEDs, and laser diodes
Semiconductors & ICs: Processors, memory, and specialized chips

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Quantum Semiconductor International Co., Ltd. (QSI) is a South Korean compound semiconductor company established in July 2000 and headquartered in Cheonan, Chungcheongnam-do. The company is publicly traded on the KOSDAQ exchange (066310) and specializes in the design, epitaxy, fabrication, and packaging of laser diodes.

Equipped with end-to-end semiconductor facilities (EPI, FAB, and PKG), QSI provides standard semiconductor laser diodes alongside custom foundry services for compound semiconductor components, serving leading multinational customers across Europe, North America, Japan, and Asia.

Offer

QSI offers comprehensive product design, contract fabrication, and packaging capabilities for compound semiconductors and optoelectronics:

  • Red Laser Diodes: Visible spectrum laser diodes in TO-can packaging (including TO-38 and TO-56 formats) engineered for laser scanners, industrial levelers, barcode readers, and laser sensor devices.
  • Infrared Laser Diodes: Near-infrared (NIR) laser diodes developed for optical pickups, laser distance meters, machine vision, and industrial LiDAR sensors.
  • VCSEL (Vertical Cavity Surface Emitting Laser): High-efficiency surface-emitting laser devices configured for 3D sensing, proximity sensing, and motion recognition.
  • Foundry Services: Compound semiconductor wafer foundry covering Epitaxy (MOCVD), Wafer Fabrication, and Device Packaging for III-V compound materials including GaAs-based devices.
  • Compound Semiconductor Devices: High-frequency and high-speed devices including Low Noise Amplifiers (LNA), HEMT, HBT, and MMIC components for RF and radar applications.
  • Micro LED Technologies: Monolithic and micro-scale semiconductor emitter solutions under development for next-generation display applications.

Tags

laser diodes
vcsel
red laser diode
infrared laser diode
compound semiconductors
lidar sensors
micro led
Industrial Specializations: Optoelectronics & Displays: LEDs, LCDs, OLEDs, and laser diodes and Semiconductors & ICs: Processors, memory, and specialized chips
Headquarter/main address: 17 Cheonheung 8-gil, Seonggeo-eup, Seobuk-gu
Cheonan-si
Chungcheongnam-do 31044
South Korea
Get Directions
https://www.qsilaser.com
Business Type: Manufacturer
Ownership: Public
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