Hung-Dar Wang

Title: Innovations of Inventor Hung-Dar Wang

Introduction

Hung-Dar Wang is a notable inventor based in Kaohsiung, Taiwan. He has made significant contributions to the field of technology, holding a total of four patents. His work primarily focuses on advancements in sound outputting apparatus and photolithographic precision alignment.

Latest Patents

One of his latest patents is a driving circuit for a sound outputting apparatus. This innovative circuit includes an H-bridge and a charge pump established by six switches for driving two types of loudspeakers. The design incorporates two common switches configured in both the H-bridge and the charge pump, which effectively reduces costs and the circuit area of the driving circuit. Another significant patent is a method of maintaining photolithographic precision alignment after the wafer bonding process. This method involves forming two cavities at the rear surface of a top wafer, corresponding to alignment marks on a bottom wafer. The depth of these cavities is deeper than that of the final membrane structure, allowing for enhanced precision in alignment during exposure processes.

Career Highlights

Hung-Dar Wang has worked with several prominent companies, including Asia Pacific Microsystems, Inc. and Ricktek Technology Corporation. His experience in these organizations has contributed to his expertise and innovative capabilities in the field.

Collaborations

He has collaborated with notable coworkers such as Shih-Chin Gong and Chung-Yang Tseng, further enhancing his contributions to technological advancements.

Conclusion

Hung-Dar Wang's innovative work and patents reflect his dedication to advancing technology in sound output and photolithography. His contributions continue to influence the industry and inspire future innovations.