Chung-Tao Chang

Title: Innovations by Chung-Tao Chang: Pioneering Optoelectronic Transceivers

Introduction

Chung-Tao Chang, a notable inventor residing in Hsinchu, Taiwan, has made significant contributions to the field of optoelectronics. With a total of seven patents to his name, he continues to push the boundaries of innovation through groundbreaking designs and methods.

Latest Patents

Among his latest patents, Chang has developed an optoelectronic transceiver that integrates optical and electronic components. This innovative transceiver can be passively aligned using both flip-chip and mechanical methods. The design incorporates essential elements such as a circuit board, a silicon sub-mount, multiple IC chips including a laser diode, laser diode driver, photodetector, and photodetector amplifier, a microlens array, an optical fiber, and a receptacle that houses these components in an aligned configuration. Notably, the mechanical alignment of the microlens array and silicon sub-mount is achieved through indentations in their surfaces and the use of spacer balls.

Another noteworthy invention by Chang is a method for forming solder bumps for flip-chip bonding. This method ensures that the solder bumps maintain a uniform height, enhancing the reliability of the bonding process. The process begins with a pre-processed semiconductor substrate featuring metal traces. Then, non-wettable masking strips are laid perpendicularly over these metal traces, creating space for forming bond pads. Finally, solder material is deposited onto the bond pads, resulting in solder bumps that are subsequently reflown into solder balls.

Career Highlights

Chung-Tao Chang's career has been marked by his association with the Industrial Technology Research Institute, where he has driven technical advancements and innovations in optoelectronics. His research and development efforts have not only propelled his personal career but have also contributed significantly to the institute's mission of enhancing technological capabilities.

Collaborations

Throughout his career, Chang has collaborated with talented individuals such as Hsiu-Tsang Lee and Hsin-Chien Huang. These partnerships have facilitated the exchange of ideas and fostered a collaborative environment that encourages inventive thinking and innovation.

Conclusion

Chung-Tao Chang stands as a distinguished figure in the realm of optoelectronic innovations. His impressive portfolio of patents and collaborative efforts highlight his commitment to advancing technology and solving complex challenges. As he continues to explore new frontiers, his contributions will undoubtedly have lasting impacts on the field and inspire future inventions.