Since its foundation in 1980, KYOTO SEMICONDUCTOR Co., Ltd. has been an R&D-focused opto-electronic manufacturer of photo-detecting diodes and light-emitting diodes (Photo-detectors and LEDs), establishing an integrated production line from front-end to back-end processing.
At our inception, we successfully developed an AlGaAs liquid-phase epitaxy apparatus, based on an innovative, slow- cooling technique. KYOTO SEMICONDUCTOR is known as a pioneer that has helped lay the foundation for today’s high brightness LEDs.

  • April 1980

    The company founded in Joyo City, Kyoto, capitalized at 10million yen.

  • May 1980

    The company’s plant established in Yodosaime-cho, Fushimi-ku, Kyoto.

  • December 1980

    Tokyo Sales Office established in Setagaya-ku, Tokyo.

  • March 1989

    Hokkaido Plant established in Kamisunagawa-cho, Sorachi-gun, Hokkaido.

  • June 1991

    Hokkaido Semiconductor Corporation founded as 100% owned and subsidiary company.

  • December 1991

    Hokkaido Semiconductor Corporation’s plant established.

  • September 1992

    Eniwa Research and Development Center established in Eniwa City, Hokkaido.

  • June 1999

    North Semiconductor Corporation established under each 50% owned by both Kyosemi and Hokkaido Semiconductor.

  • December 2000

    Headquarters relocated to Ebisu-cho, Fushimi-ku, Kyoto.

  • February 2001

    Received the Technical Excellence Award for medium and small enterprises in Kyoto prefecture by Photo-devices of Photodiodes and others.

  • April 2001

    Hokkaido Semiconductor Corporation merged North Semiconductor Corporation.

  • October 2001

    Eniwa Operation acquired ISO9001:1994 certification.

  • March 2003

    Company merged subsidiary Hokkaido Semiconductor.

  • April 2003

    Company renamed from Kyoto Semiconductor Corporation to Kyosemi Corporation.

  • June 2004

    Eniwa and Kamisunagawa Operations acquired ISO9001:2000 Certification.

  • August 2004

    Eniwa and Kamisunagawa Operations acquired ISO14000:1996 certification.

  • March 2005

    Tokyo Sales Office relocated to Shinjyuku-ku, Tokyo.

  • October 2005

    Kyosemi Opto America Corporation(KOAC) established as a fully owned subsidiary of Kyosemi Corp. in Santa Clara, CA,USA.

  • May 2016

    iSigma Business Advancement Fund II established Kyosemi Holding Ltd.

  • July 2016

    Kyosemi Holding Ltd. acquired the shares of Kyosemi Corporation as it’s subsidiary.

  • October 2016

    Kyosemi Holding Ltd. acquired 100% of the shares of Kyosemi Corporation.

  • April 2017

    Kyosemi Holding Ltd. merged with Kyosemi Corporation. Changed company name from Kyosemi Holding Ltd. to Kyosemi Corporation.

  • November 2017

    Headquarters relocated to present address of Nishiote-cho, Fushimi-ku, Kyoto.

  • October 2018

    Company renamed from Kyosemi Corporation to KYOTO SEMICONDUCTOR Co., Ltd.

  • March 2022

    Dexerials Corporation acquired the shares of Kyoto Semiconductor and made the company a consolidated subsidiary.
    *Dexerials Corporation HP