Kyu-whan Chang

Title: Kyu-whan Chang: Innovator in Semiconductor Manufacturing

Introduction

Kyu-whan Chang is a notable inventor based in Hwaseong, South Korea. He has made significant contributions to the field of semiconductor manufacturing, particularly through his innovative methods for removing oxide layers from silicon wafers.

Latest Patents

Kyu-whan Chang holds a patent for a "Method of removing oxide layer and semiconductor manufacturing apparatus for removing oxide layer." This invention provides a method for effectively removing oxide layers, such as natural oxide layers, from silicon wafers. The process involves a vertically movable susceptor located in a processing chamber, where a silicon wafer is loaded. The chamber is evacuated to create a vacuum, and a plasma state hydrogen gas along with a fluorine-containing gas is introduced to induce a chemical reaction with the oxide layer. This results in a reaction layer that can be vaporized and exhausted from the chamber, allowing for high selectivity in oxide layer removal without damaging the underlying layer.

Career Highlights

Kyu-whan Chang is currently employed at Samsung Electronics Co., Ltd., a leading company in the electronics and semiconductor industry. His work has been pivotal in advancing semiconductor manufacturing techniques, contributing to the efficiency and effectiveness of the processes involved.

Collaborations

He has collaborated with notable colleagues, including Kun-tack Lee and Seung-Pil Chung, who have also contributed to advancements in semiconductor technologies.

Conclusion

Kyu-whan Chang's innovative approach to semiconductor manufacturing exemplifies the importance of research and development in the technology sector. His patent reflects a significant advancement in the field, showcasing his expertise and commitment to innovation.