TOYODA GOSEI

Toyoda Gosel and LED

We have promoted research and development on LEDs (light emitting diodes) and LDs (laser diodes), using gallium nitride (GaN) as a base by utilizing our macromolecule technologies that have been accumulated in the area of automobiles. We also successfully developed blue LEDs, green LEDs, purple LEDs and white LEDs, named “TG White Hi”, with the world’s top level luminous intensity and started mass production. We can expect further development of Optoelectronics based on LED technology in order to apply to a broader range of industries such as illumination, picture images, healthcare, optical communication and traffic-related (traffic signals). We put our efforts into its research and development to meet various future demands.

Background of LED development

TG has accumulated unique galvanizing and thin-film technologies such as vacuum deposition and sputtering in order to meet demand for a decorative finish on interior and exterior products. In 1986 (61st year of Showa Era), TG launched LED development using gallium nitride (GaN) under the direction of Prof. Isamu Akasaki of the Faculty of Engineering, Nagoya University (Currently University Prof. of Nagoya University and Prof. of Meijo University) and Toyota Central R&D Labs., Inc. In the following year, TG was contracted by the Science and Technology Promotion Group to develop manufacturing technology for blue LEDs and achieved great success in its development.

web: http://www.toyoda-gosei.com/led/