History

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.

1980

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.

1990

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.

2000

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.

2010

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.

2020

March 2022
Dexerials Corporation acquired the shares of Kyoto Semiconductor and made the company a consolidated subsidiary.
*Dexerials Corporation HP