Kouji Tominaga

Title: Kouji Tominaga: Innovator in Semiconductor Technology

Introduction

Kouji Tominaga is a notable inventor based in Hirakata, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on innovative methods for fabricating semiconductor devices and enhancing light-emitting diodes.

Latest Patents

Tominaga's latest patents include a semiconductor device and a method of fabricating the same. This invention involves forming a first buffer layer on a substrate at a lower temperature than the single-crystal-growth-temperature. It also includes the formation of a second buffer layer composed of various materials at the single-crystal-growth-temperature, ultimately leading to a device-constituting layer made of nitride semiconductor. Another significant patent is for a semiconductor LED composed of group III nitrided emission and fluorescent layers. This invention allows for the extraction of white light and is manufactured with high reliability. The LED is created by layering a buffer layer, an Si-doped GaN fluorescent layer, an n-GaN layer, an MQW emission layer, and a p-GaN layer on a sapphire substrate. The Si-doped GaN fluorescent layer is designed to emit yellow light when excited by blue light from the MQW emission layer, enabling the production of white light.

Career Highlights

Throughout his career, Kouji Tominaga has worked with prominent companies such as Sanyo Electric Co., Ltd. and Tottori Sanyo Electric Co., Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Tominaga has collaborated with notable coworkers, including Masayuki Hata and Yasuhiko Matsushita. Their combined efforts have further advanced the field of semiconductor devices and LED technology.

Conclusion

Kouji Tominaga's contributions to semiconductor technology and his innovative patents have made a significant impact in the industry. His work continues to influence advancements in light-emitting diodes and semiconductor devices.