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SEIREN KST Leads Semiconductor Innovation Charge

Article - January 28, 2025

SEIREN KST excels in SOI, SiC and PLC technologies, driving advancements in semiconductor solutions for various high-tech industries.

Yojiro Kamei, President, SEIREN KST


 

SEIREN KST is a subsidiary of SEIREN CO., LTD., which controls the world’s top share of the automotive upholstery materials market, and has established itself as a leader in the semiconductor industry, renowned for its cutting-edge technologies and high-quality products. Founded in 1998, the company specializes in silicon wafer processing, with a focus on silicon on insulator (SOI), thick thermal oxide and planar lightwave circuit (PLC) technologies.

One of SEIREN KST's flagship products is SOI, particularly its Thick Box SOI and Cavity SOI. According to Yojiro Kamei, president of SEIREN KST: "We supply SOI with thermal oxide film and bonded silicon wafers to semiconductor device and equipment manufacturers. Our oxide films, which are much thicker than competitors', are crucial for optical devices and high-voltage power devices." The company's expertise in creating ultra-thick thermal oxide films, with thicknesses up to 20μm, sets it apart in the industry. These films are critical for optical communication devices, enhancing communication accuracy and reliability.


https://www.kst.seiren.com/


In addition to SOI, SEIREN KST is a significant player in the next-generation semiconductor materials market. The company has ventured into silicon carbide (SiC) processing, a material increasingly essential for electric vehicles (EVs). Mr. Kamei explains: "High voltages required for EVs necessitate SiC due to its larger band gap compared to silicon. As the demand for EVs grows, so does the market for SiC, and we are preparing to meet our customers' needs in this area."

SEIREN KST's PLC technology also demonstrates the firm’s innovation. PLC uses thick oxide films to separate and divide various types of light, making it a compact and efficient solution for optical circuitry. This PLC technology can be used for making RGB laser combiners, with the potential for utilization in smart glasses.

Mr. Kamei attributes the company's success to its strong emphasis on research and development. "We invest nearly 10 percent of our sales into R&D, focusing on advancing wafer processing technology and next-generation semiconductors," he notes. This commitment to innovation has allowed SEIREN KST to maintain a competitive edge and continue meeting the evolving demands of the semiconductor industry.

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