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October 2018 Company renamed from Kyosemi Corporation to KYOTO SEMICONDUCTOR Co., Ltd.
November 2017 Headquarters relocated to present address of Nishiote-cho, Fushimi-ku, Kyoto
April 2017 Kyosemi Holding Ltd. merged with Kyosemi Corporation.
Changed company name from Kyosemi Holding Ltd. to Kyosemi Corporation.
October 2016 Kyosemi Holding Ltd. acquired 100% of the shares of Kyosemi Corporation.
July 2016 Kyosemi Holding Ltd. acquired the shares of Kyosemi Corporation as it's subsidiary.
May 2016 iSigma Business Advancement Fund II established Kyosemi Holding Ltd.
September 2006 Designated as an approved enterprise for "Innovative Management Plan" in Kyoto prefecture by new product development of UV sensor.
October 2005 Kyosemi Opto America Corporation(KOAC) established as a fully owned subsidiary of Kyosemi Corp. in Santa Clara, CA,USA.
March 2005 Tokyo Sales Office relocated to Shinjyuku-ku, Tokyo.
August 2004 Eniwa and Kamisunagawa Operations acquired ISO14000:1996 certification.
June 2004 Eniwa and Kamisunagawa Operations acquired ISO9001:2000 Certification.
April 2003 Company renamed from Kyoto Semiconductor Corporation to Kyosemi Corporation.
March 2003 Company merged subsidiary Hokkaido Semiconductor.
October 2001 Eniwa Operation acquired ISO9001:1994 certification.
April 2001 Hokkaido Semiconductor Corporation merged North Semiconductor Corporation.
February 2001 Received the Technical Excellence Award for medium and small enterprises in Kyoto prefecture by Photo-devices of Photodiodes and others.
December 2000 Headquarters relocated to Ebisu-cho, Fushimi-ku, Kyoto.
June 1999 North Semiconductor Corporation established under each 50% owned by both Kyosemi and Hokkaido Semiconductor.
September 1992 Eniwa Research and Development Center established in Eniwa City, Hokkaido.
December 1991 Hokkaido Semiconductor Corporation's plant established.
June 1991 Hokkaido Semiconductor Corporation founded as 100% owned and subsidiary company.
March 1989 Hokkaido Plant established in Kamisunagawa-cho, Sorachi-gun, Hokkaido.
December 1980 Tokyo Sales Office established in Setagaya-ku, Tokyo.
May 1980 The company's plant established in Yodosaime-cho, Fushimi-ku, Kyoto.
April 1980 The company founded in Joyo City, Kyoto, capitalized at 10million yen.

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New Products

KP-2 two-tone photodiode KPMC29
A two-wavelength photodiode, in the industry’s smallest class, with silicon and indium-gallium-arsenide photodiodes, with photosensitivity from 400 to 1,700 nm, arrayed along the same light axis.
Si APD module KPM100
Si APD module integrated with a high speed transimpedance amplifier and a high voltage bias source.
Low profile parallel beam LED KED050-H23
Parallel beam LED with a newly designed low profile lens for optical encoders.

News & Topics

  • New product announcement
  • [Information] Extension of the working-from-home system for employees

    Based on the Japanese government’s announcement that the state of emergency is extended until May 31st, Kyoto Semiconductor has decided to continue the working-from-home system for employees until the same date.
    We keep putting the safety and the well-being of our employees as a top priority while we are making utmost effort to minimize the impact of this to our customers’ business.
    Again, we will keep posting the latest information as the situation evolves.
    Thank you and stay safe.
  • [Information] Start of the working-from-home system for employees in Hokkaido

    As the Japanese government extended the state of emergency to all the prefectures in Japan, Kyoto Semiconductor extended the measures against COVID-19 to the employees in Hokkaido in an effort to prioritize the safety and the well-being of our employees.

    Although our teams are strongly committed to minimize the impact of this, there could be a possibility of delay in development schedules or optimization in manufacturing capacity depending on the situation. We will keep posting the latest information as the situation evolves. Thank you for your understanding.