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What's special about KYOTO SEMICONDUCTOR Co., Ltd.?

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.

We are a manufacturer of optical semiconductor devices

We have the latest facilities and equipments for the design, manufacture, quality evaluation, and all other processes of opto-electronic devices. Since we carry out each and every step---from design, to front-end and back-end processing, all the way through to reliability checks---we can address customer-specific problems and produce prototypes that help fast-track product commercialization. We work to satisfy customers by both delivering products on time and assuring a high level of quality. We also supply products in various packages, such as hermetically sealed, epoxy potted, plastic molded, surface mounted, and transfer molded to meet a range of customer needs.

Our optical semiconductor devices are widely applied to the fields of opticalcommunications and optical and opto sensors, and measuring and control devices.

Integrated In-line process of plastic mold LED production In Kamisunagawa Plant

Integrated In-line process of plastic mold LED production In Kamisunagawa Plant

Optical communications

KYOTO SEMICONDUCTOR Co., Ltd. develops, manufactures and distributes photoelectric conversion devices used in telecommunications, Internet networking, and LAN (Local Area Network) systems.
There are generally two kinds of systems.
One is long-haul (backbone) and metropolitan networking systems based on DWDM (Dense Wave Division Multiplexing), in which a huge volume of information is transmitted through one glass fiber. Another is FTTH (Fiber To The Home) systems for connecting their subscribers.
Our long-wave photodiodes and opto-electronic modules are used in both systems and are incorporated into DVDM systems, ONTs (Optical Network Terminals), optical routers, optical transmitters and receivers, and other devices and equipments.

Pigtail modules for Optical Communication

Pigtail modules for Optical Communication

Photodevices for Sensors

KYOTO SEMICONDUCTOR Co., Ltd. develops, manufactures and distributes optical semiconductor devices like photo-detecting diodes (Photo-detectors) and light-emitting diodes (LEDs) that are sensitive over a wide spectrum, from ultraviolet to long wavelengths up to near infrared (NIR). Our standard products are compound semiconductor LEDs and high speed photo-detectors, Silicon photodiodes, phototransistors, photodiode arrays, and so on.
Photo-detectors that receive images and optical signals are sometimes called optical or opto sensors.
These optical devices are used for a wide range of applications that include FA (Factory Automation) and industrial equipment such as banknote readers, automatic control units, encoding systems, medical equipments, hazardous area industrial monitoring systems, and disaster-prevention systems, and so on.

Photodevices for Optical and Opto sensors

Photodevices for Optical and Opto sensors

Our mission

Our vision is to integrate opto-electronic technologies relating to optical communications, optical wave-guides, and optical sensors in order to create innovative products unique to KYOTO SEMICONDUCTOR, and to do business in next-generation information communication markets to cover both of optical sensor networks and ubiquitous networking.

It is KYOTO SEMICONDUCTOR Co., Ltd.'s mission to contribute to society by achieving the maximum corporate value from now on.

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New Products

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.
Photovoltaic power converter KPC8-T
High efficient power converter from 1300-1600nm laser light into electrical power.