Mutsuo Ogura

Title: Mutsuo Ogura: A Pioneer in Semiconductor Innovations

Introduction

Mutsuo Ogura is a notable inventor based in Tsukuba, Japan, recognized for his contributions to the field of semiconductors. With a remarkable portfolio of 14 patents, Ogura has significantly impacted the development of advanced electronic components. His innovative designs have paved the way for enhanced performance in various applications, particularly in phototransistors and light-emitting diodes.

Latest Patents

Among Ogura's latest patents is the **Hetero-junction bipolar phototransistor with improved noise characteristic**. This invention includes a photo-absorption layer formed of a first conductivity type semiconductor layer, along with a collector operating as a barrier layer, a base layer, and an emitter layer, stacked sequentially over the photo-absorption layer. This configuration allows for improved noise characteristics by utilizing a semiconductor layer with a narrow gap for light-sensing and a wider gap for the collector.

Another notable patent is the **Semiconductor light emitting diode (LED)**, which showcases a highly efficient design that enhances light extraction efficiency. This device comprises a substrate with multiple crystal planes, two conductivity-type barrier layers, and an active layer functioning as the light-emitting core. The ridge structure, integral to this LED, develops from a flat surface and two inclining surfaces, optimizing light emission by addressing total internal reflection.

Career Highlights

Mutsuo Ogura has contributed to significant advancements in semiconductor technologies while working with esteemed institutions such as the National Institute of Advanced Industrial Science and Technology and the Agency of Industrial Science and Technology. His role at these organizations has enabled him to delve into advanced research and practical applications of his inventions, fostering growth in the semiconductor sector.

Collaborations

Throughout his career, Ogura has collaborated with esteemed colleagues, including Takeyoshi Sugaya and Katsuhiko Nishida. These collaborations have fueled innovation and knowledge exchange, solidifying his reputation as a leading inventor in his field.

Conclusion

Mutsuo Ogura’s contributions to semiconductor technologies illustrate his dedication to innovation and excellence. His patents reflect a deep understanding of material properties and engineering principles, positioning him as a key figure in advancing electronic components. As the technology continues to evolve, inventions such as those by Ogura will play an essential role in shaping the future of electronics.