Fumiko Yoyasu

Title: Fumiko Yoyasu: Innovator in Semiconductor Light Emitting Devices

Introduction

Fumiko Yoyasu is a prominent inventor based in Yokoshima, Japan. He has made significant contributions to the field of semiconductor light emitting devices, holding a total of 7 patents. His work focuses on enhancing color reproducibility and brightness in image display technologies.

Latest Patents

Yoyasu's latest patents include innovative designs for light emitting devices. One of his notable inventions aims to provide a semiconductor light emitting device capable of achieving broad color reproducibility for an entire image without compromising brightness. This device features a solid light emitting component that emits light in the blue or deep blue region, or in the ultraviolet region, combined with phosphors. The phosphors consist of a green emitting phosphor and a red emitting phosphor, which are designed to maintain a stable emission peak intensity at varying temperatures.

Career Highlights

Throughout his career, Yoyasu has worked with esteemed companies such as Citizen Electronics Co., Ltd. and Mitsubishi Chemical Corporation. His experience in these organizations has allowed him to refine his expertise in semiconductor technologies and contribute to advancements in the field.

Collaborations

Yoyasu has collaborated with notable colleagues, including Byungchul Hong and Naoki Sako. These partnerships have fostered innovation and development in his projects.

Conclusion

Fumiko Yoyasu's contributions to semiconductor light emitting devices have significantly impacted the industry. His innovative patents and collaborations highlight his dedication to advancing technology in image display systems.