Hyung-Chul Choi

Title: Innovations of Hyung-Chul Choi

Introduction

Hyung-Chul Choi is a notable inventor based in Lexington, MA (US). He has made significant contributions to the field of technology, particularly in the development of advanced materials and processes. With a total of 7 patents to his name, Choi's work has had a considerable impact on various applications, including display technologies.

Latest Patents

One of Choi's latest patents is a process for forming electrodes. This innovation involves creating substantially transparent electrodes on a substrate by sequentially forming a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer. The top layer and conductive layer are patterned, preferably through laser ablation, to create discrete electrodes. This method allows conductors to be attached directly to the top layer, eliminating the need to remove it to expose the metallic layer. The process can be performed at lower temperatures, making it suitable for plastic substrates, which can be utilized in flat panel displays and touch screen displays.

Another significant patent is for an antireflection film. This coating consists of one or more inorganic antireflection layers, typically metal oxide or silica layers, along with a polymer layer that is cured in situ. The polymer layer has a refractive index not exceeding about 1.53 over the wavelength range of 400 to 700 nm and a thickness ranging from about 20 to about 200 nm. This innovation not only provides excellent scratch and fingerprint protection but also allows for the reduction of the thickness of the inorganic layers, thereby lowering the cost of the coating.

Career Highlights

Choi has worked with prominent companies such as 3M Innovative Properties Company and Polaroid Corporation. His experience in these organizations has contributed to his expertise in developing innovative technologies and materials.

Collaborations

Throughout his career, Choi has collaborated with notable individuals, including William K. Smyth and Robert L. Jones. These collaborations have further enriched his work and expanded the scope of his inventions.

Conclusion

Hyung-Chul Choi's contributions to the field of technology through his patents and innovations demonstrate his commitment to advancing materials and processes. His work continues to influence the development of modern display technologies and coatings.