James S Chang

Title: Innovations of James S. Chang

Introduction

James S. Chang is an accomplished inventor based in Windsor, California. He has made significant contributions to the field of semiconductor technology. His innovative work has led to the development of a unique method for doping semiconductor layers.

Latest Patents

James S. Chang holds a patent for a method titled "Diffusion using a solid state source." This patent describes a technique for depositing a p-type dopant from a dopant layer into a predetermined region of a III-V semiconductor layer or multiple layers. The method allows for the p-type dopant to be deposited in very high concentrations in a semiconductor layer adjacent to the predetermined region. A second semiconductor layer, doped with a lower concentration of an n-type dopant, is later deposited, ensuring that the high concentration p-type dopant layer lies between the predetermined region and the n-type dopant layer. This innovative approach enables the p-type dopant to diffuse into the predetermined region through thermally driven diffusion, which can be performed at lower temperatures or for shorter time intervals than conventional methods. Additionally, the p-type dopant diffusion may extend over greater distances, enhancing the efficiency of semiconductor fabrication.

Career Highlights

James S. Chang is currently employed at Hewlett-Packard Company, where he continues to advance his research and development efforts in semiconductor technology. His work has been instrumental in improving the performance and reliability of semiconductor devices.

Collaborations

Some of his notable coworkers include Thomas S. Low and Kent A. Carey, who have collaborated with him on various projects within the semiconductor field.

Conclusion

James S. Chang's innovative contributions to semiconductor technology, particularly through his patented methods, have significantly impacted the industry. His work continues to inspire advancements in the field, showcasing the importance of innovation in technology.