Ji-Su Choi

Title: The Innovative Mind of Ji-Su Choi: A Look at His Contributions in Daejeon, KR

Introduction

Ji-Su Choi is an accomplished inventor based in Daejeon, South Korea. With two patents to his name, he has made significant contributions to the fields of digital electronics and material science. His innovative work demonstrates not only technical proficiency but also a commitment to advancing technology.

Latest Patents

One of Ji-Su Choi's notable inventions is a **Digital-to-Analog Converter and Driving Circuit of Display Device Having the Same**. This digital-to-analog converter features a structure that minimizes the effects of mismatch between elements while reducing the overall quantity of components required. The device incorporates a multiplexer that outputs either a first or second voltage corresponding to an input bit and employs a recursive switched circuit for enhanced performance.

Choi's second patent is the **Method for Preparing a Pitch for Carbon Fibers and a Pitch for Carbon Fibers Prepared by the Same**. This method involves the introduction of a peroxide compound and ozone into petroleum-process residual oil, followed by a heat treatment for reaction. The resulting pitch for carbon fibers showcases excellent oxidative stabilization and incompatibility, while also achieving high strength and softening points at a relatively low processing temperature.

Career Highlights

Ji-Su Choi has worked with notable organizations, including Samsung Display Co., Ltd. and the Korea Advanced Institute of Science and Technology. His experiences at these companies have undoubtedly enriched his expertise and influence in his respective fields.

Collaborations

Throughout his career, Choi has had the opportunity to collaborate with talented individuals such as Ohjo Kwon and Gyu-Hyeong Cho. These collaborations have likely fostered an environment of innovation and contributed to the successful development of his patents.

Conclusion

Ji-Su Choi continues to be a driving force in innovation, contributing valuable insights and inventions that make significant impacts in technology. His work in digital electronics and carbon fiber preparation highlights his versatility and dedication to advancing the scientific community. As he moves forward, it will be exciting to see what further developments he will bring to life.