Takao Uesugi

Title: **Innovative Contributions of Takao Uesugi**

Introduction

Takao Uesugi, a prominent inventor based in Nakakubiki-gun, Japan, has made significant strides in the field of optical technologies. With a total of three patents to his name, he has been instrumental in developing solutions that improve polarization efficiency and visual performance in high humidity and high-temperature environments.

Latest Patents

Uesugi's latest patents focus on the creation of advanced polarizing plates. One of his notable inventions describes a polarizing plate that effectively suppresses the drop in polarization efficiency, hue shift, and light leakage under challenging conditions. This innovative polarizing plate incorporates a polyvinyl-alcohol-based polarizing film and a protective film made from a cyclic-olefin-based resin. Additionally, it features an anchor coat agent film and an adhesive layer that work together to enhance its functionality. The performance specifications of his invention are impressive, demonstrating a minimal 5 nm change in optical in-plane retardation after 24 hours of exposure to 80°C, with a wetting tension of 500 µN/cm or more at room temperature.

Another significant patent by Uesugi highlights a polarizing plate that retains a polarization efficiency of 0.97 or higher after being subjected to an atmosphere of 80°C and 90% relative humidity for 24 hours. This advancement assures a retention of luminance at 3.0 or less, with minimal changes in color values, which makes it suitable for high-performance liquid crystal display devices.

Career Highlights

Throughout his career, Uesugi has collaborated with reputable companies, including Gunze Co., Ltd. and Poratechno Co., Ltd., contributing to various innovations in the field. His expertise in optical materials has established him as a valuable asset in the development of state-of-the-art display technologies.

Collaborations

Uesugi has had the opportunity to work alongside distinguished colleagues such as Yoshinori Ishii and Koichi Watanabe. These collaborations have allowed him to further refine his inventions and drive innovation in the optical technology sector.

Conclusion

In conclusion, Takao Uesugi stands out as a significant figure in the realm of optical technology innovation. His recent patents reflect a deep understanding of material science and a commitment to enhancing display performance under adverse conditions. With his track record of success and collaborations with leading companies and skilled individuals, Uesugi continues to pave the way for future advancements in the industry.