Yu-Chia Chang

Title: Yu-Chia Chang: Innovator in Optical Recording and Contamination Prevention

Introduction

Yu-Chia Chang is a prominent inventor based in Hsin-Chu, Taiwan. He has made significant contributions to the fields of optical recording media and contamination prevention systems. With a total of 5 patents to his name, Chang's work reflects a commitment to advancing technology and improving processes in semiconductor manufacturing.

Latest Patents

One of Yu-Chia Chang's latest patents is focused on a thin-film design for optical recording media. This invention discloses a thin-film optical recording medium and compatible materials. When the transparent layer and the reflecting layer are exposed to a light beam, they react to form a semi-transparent reflective alloy or compound area. This area decreases the effective optical thickness of the transparent layer, forms a region of changed optical properties, and alters the optical polarization angle. These effects produce an optical contrast that allows for high-density, high-resolution, and high-speed data recording compatible with the full visible-light spectrum.

Another notable patent is the contamination prevention system and method. This invention includes a contamination prevention shield that works with a high-pressure rinse apparatus to prevent particle contamination within a chemical mechanical polishing (CMP) apparatus. The shield features a cleaning cup, vertical side shields, a front vertical shield, and a floor that work together to prevent fluid leakage during high-pressure rinsing. The system can utilize multiple contamination prevention shields in conjunction with the rinse apparatus to enhance protection against contamination.

Career Highlights

Yu-Chia Chang has worked with Taiwan Semiconductor Manufacturing Company Limited, where he has applied his innovative ideas to real-world challenges in semiconductor manufacturing. His experience in this leading company has allowed him to contribute significantly to advancements in technology.

Collaborations

Throughout his career, Chang has collaborated with notable individuals such as Chih-I Peng and Wen-Ten Chen. These collaborations have fostered an environment of innovation and creativity, leading to the development of impactful technologies.

Conclusion

Yu-Chia Chang's contributions to optical recording and contamination prevention highlight his role as a key innovator in the technology sector. His patents demonstrate a forward-thinking approach that addresses critical challenges in semiconductor manufacturing.