Miki Moriyama

Title: Miki Moriyama: Innovator in Group III Nitride Semiconductor Technology

Introduction

Miki Moriyama, based in Kiyosu, Japan, is a prolific inventor known for his significant contributions to the field of semiconductor technology. With an impressive portfolio of 31 patents, Moriyama stands at the forefront of innovations related to Group III nitride semiconductors, which are essential for various electronic applications.

Latest Patents

Moriyama's latest patents focus on advanced methods for producing Group III nitride semiconductors. One notable invention details a method for producing a Group III nitride semiconductor by controlling the oxygen concentration of the furnace internal atmosphere. This approach aims to suppress anomalous growth at the periphery of a seed substrate, thereby enhancing the overall quality of the semiconductor. In this process, a nitrogen-containing gas is fed into a molten mixture of a Group III metal and a flux within the furnace, allowing for precise control over growth conditions. The oxygen concentration is carefully regulated to remain at 0.02 ppm or less during critical growth phases, followed by a controlled increase up to 0.1 ppm.

Another significant patent describes a method for producing a Group III nitride semiconductor using a specialized seed substrate. This seed substrate consists of a base substrate featuring both a high and low dislocation density region. The innovative design includes a honeycomb pattern in the high dislocation density region, along with cavities that facilitate the easy peeling of the object layer from the seed substrate after growth.

Career Highlights

Throughout his career, Miki Moriyama has held positions at notable institutions, including Toyoda Gosei Co., Ltd. and Kanagawa Academy of Science and Technology. His work at these organizations has allowed him to develop groundbreaking technologies in semiconductor production and contribute to advancements in the field.

Collaborations

Moriya has collaborated with esteemed colleagues such as Koichi Goshonoo and Masanori Murakami, who have shared insights and expertise that have further propelled his innovative endeavors. These collaborations have played a crucial role in overcoming complex challenges within semiconductor technology, allowing for the continuous evolution of applications in the industry.

Conclusion

Miki Moriyama’s work exemplifies the spirit of innovation in semiconductor technology. His patents not only advance the production of Group III nitride semiconductors but also pave the way for improved efficiency and performance in electronic devices. With a dedication to research and development, Moriyama continues to inspire future generations of inventors and engineers in the field.