Jeong-su Yu

Title: **Innovative Contributions of Jeong-su Yu in Liquid Crystal Technology**

Introduction

Jeong-su Yu, an accomplished inventor based in Daejeon, South Korea, has made significant strides in the field of liquid crystal technology. With an impressive portfolio of 11 patents, his innovations focus predominantly on enhancing liquid crystal display (LCD) technology, demonstrating his expertise and commitment to advancing the industry.

Latest Patents

Among his latest patents, Jeong-su Yu has developed a bi-axial retardation compensation film specifically designed for use in vertically aligned liquid crystal displays (VA-LCDs). This invention relates to a unique film where the in-plane refractive index (n, n) is greater than the thickness refractive index (n). The film features a reversed wavelength dispersion, where retardation grows with an increase in the visible spectrum wavelength, resulting in improved contrast characteristics on the front surface and at tilt angles. It also minimizes color distortion in black states when viewed at various angles.

Another significant patent involves a new dichroic dye with both liquid crystal and dichroic properties, intended for polarization films. This dye offers excellent heat resistance, durability, and polarizing capabilities. The associated composition for the polarization film is applied to substrates to create durable polarization plates that exhibit superior dichroic ratios.

Career Highlights

Jeong-su Yu has had a remarkable career, having worked with notable companies such as LG Chem and LG Chemical. His experience in these organizations has undoubtedly contributed to the advancement of technologies in the field of liquid crystals and displays.

Collaborations

Throughout his career, Jeong-su Yu has collaborated with other talented individuals, including Sergey Belyaev and Byoung-Kun Jeon. These collaborations have helped him to innovate and refine his inventions, contributing to the success of his projects.

Conclusion

Jeong-su Yu's contributions to liquid crystal technology through his patents reflect his ingenuity and dedication as an inventor. His work on bi-axial retardation compensation films and dichroic dyes significantly enhances the performance and quality of modern LCDs, solidifying his status as a leading figure in innovation in this field.