Wonjun Chang

Title: Innovations of Wonjun Chang in Plasma Etching Technology

Introduction: Wonjun Chang is a notable inventor based in Seoul, South Korea. He has made significant contributions to the field of plasma etching, a critical process in semiconductor manufacturing. His innovative approaches have the potential to enhance the efficiency and effectiveness of etching techniques used in various applications.

Latest Patents: Wonjun Chang holds a patent for a "Plasma etching method and plasma etching device." This invention introduces a novel plasma etching method that includes forming a photoresist pattern on a target etching layer. The method involves hardening the surface of the photoresist pattern by exposing it to a first plasma generated from a first discharge gas containing a reforming gas, which includes carbon (C) and sulfur (S). Following this, the target etching layer is etched using a second plasma generated from a second discharge gas, utilizing the surface-hardened photoresist pattern as a mask. This innovative approach is designed to improve the precision and quality of etching processes.

Career Highlights: Wonjun Chang is affiliated with Sungkyunkwan University, where he continues to engage in research and development in the field of plasma technology. His work is recognized for its potential impact on the semiconductor industry, particularly in enhancing etching methods that are crucial for the fabrication of electronic devices.

Collaborations: Wonjun Chang collaborates with esteemed colleagues such as Geun Young Yeom and Hee Ju Kim. Their combined expertise contributes to advancing research in plasma etching and related technologies.

Conclusion: Wonjun Chang's contributions to plasma etching technology exemplify the innovative spirit of modern inventors. His patent and ongoing research at Sungkyunkwan University highlight the importance of advancements in this field for the future of semiconductor manufacturing.