Koji Ueyama

Title: Koji Ueyama: Innovator in Photonic Semiconductor Technology

Introduction

Koji Ueyama is a notable inventor based in Tottori, Japan. He has made significant contributions to the field of photonic semiconductors, particularly with his innovative designs that enhance light reception and emission.

Latest Patents

Ueyama holds a patent for a light-receiving element and photonic semiconductor device. This invention features a photodiode integrated into the top surface of a semiconductor substrate, functioning as a light-receiving region. Additionally, it includes a light-emitting element mount electrode positioned on the substrate where the light-receiving region is absent. A high concentration impurity layer is strategically placed below the substrate's surface to prevent voltage interference with the light-receiving element's output. Furthermore, the photonic semiconductor device is designed to align the light-emitting element with the light-receiving region, facilitating efficient light reception and minimizing sensitivity variations.

Career Highlights

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

Collaborations

Ueyama has collaborated with notable colleagues, including Susumu Nishimura and Shoji Honda. Their joint efforts have likely played a role in advancing the technology within their field.

Conclusion

Koji Ueyama's contributions to photonic semiconductor technology demonstrate his innovative spirit and commitment to enhancing light-receiving elements. His patent reflects a significant advancement in the field, showcasing his expertise and dedication to innovation.