Toshiyuki Umehara

Title: Innovations by Toshiyuki Umehara

Introduction

Toshiyuki Umehara is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of materials science, particularly in the development of resin sheets and liquid crystal cell substrates. With a total of 11 patents to his name, Umehara's work has had a substantial impact on the technology industry.

Latest Patents

Umehara's latest patents include a resin sheet designed to be resistant to heat and prevent cracking. This innovative resin sheet is created by dipping a glass fiber cloth-like material into an epoxy resin solution and curing it. The resulting epoxy resin-based sheet boasts a haze value of 10% or lower, a light transmittance of 88% or higher, an in-plane retardation of not more than 2 nm, a thickness direction retardation of 40 nm, and a surface roughness of not more than 2 micrometers. Additionally, he has developed resin sheets that are thin, lightweight, and equipped with antiglare and light-diffusing functions to enhance liquid crystal displays. These advancements help to mitigate the ghost phenomenon and glittering effects caused by surrounding light sources.

Career Highlights

Throughout his career, Umehara has worked with notable companies such as Nitto Denko Corporation and Kansai Paint Company, Ltd. His experience in these organizations has allowed him to refine his expertise in materials and technology, leading to his innovative patent developments.

Collaborations

Umehara has collaborated with esteemed colleagues, including Yoshimasa Sakata and Nobuyoshi Yagi. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Toshiyuki Umehara's contributions to the field of materials science through his innovative patents have significantly influenced the technology landscape. His work continues to pave the way for advancements in resin sheets and liquid crystal displays.