Sang Un Choi

Title: **Innovative Contributions of Inventor Sang Un Choi in Liquid Crystal Displays**

Introduction

Sang Un Choi is a distinguished inventor based in Kyoungki-do, South Korea, renowned for his significant contributions to the field of liquid crystal display (LCD) technology. With a remarkable portfolio of six patents, he has paved the way for advancements in display technology that enhance both visual quality and performance.

Latest Patents

Among his latest innovations, one notable patent is the **VVA-mode liquid crystal display**. This invention features improved transmittance and response speed, consisting of upper and lower substrates facing each other across a predetermined distance, with a liquid crystal layer exhibiting negative anisotropy of dielectric constant. It incorporates a color resin layer on the upper substrate's inner surface, which contains valleys formed within each pixel unit, a counter electrode, and a uniquely designed pixel electrode featuring slits in a '+' configuration. Additionally, alignment layers are interposed to optimize functionality.

Another of his patents is the **liquid crystal display**, which addresses the issue of disclination lines by aligning liquid crystal molecules in a predetermined direction around a valley within the upper substrate. This design consists of upper and lower substrates and multiple slits in the lower substrate’s pixel region, ensuring each slit maintains a precise distance from its neighbors. Vertical alignment materials are utilized on both faces of the substrates, and liquid crystal layers are injected for optimal performance. Polarizers are meticulously arranged on the outer faces of both substrates, with transmission axes oriented perpendicularly.

Career Highlights

Throughout his career, Sang Un Choi has contributed to prestigious companies, notably **Boe Hydis Technology Co., Ltd.** and **Hyundai Display Technology Inc.**, where he has been instrumental in driving innovations that have reshaped the landscape of display technology. His work has significantly impacted the efficiency and quality of LCDs in various applications.

Collaborations

Sang Un Choi has collaborated with esteemed professionals in the field, including his coworkers Dong Hae Seo and Seong Wook Shin. These partnerships have fostered a collaborative environment that encourages the exchange of ideas, ultimately leading to breakthroughs in LCD technology.

Conclusion

Sang Un Choi stands out as an influential figure in the realm of liquid crystal displays, with a strong commitment to enhancing display technology through his inventive spirit. His latest patents represent critical advancements that promise to elevate the performance and efficiency of LCDs, marking him as a notable inventor in contemporary technological innovation.