Company Filing History:
Years Active: 1991-2012
Title: Innovations of Dah W Tsang
Introduction
Dah W Tsang is a notable inventor based in Bend, Oregon, recognized for his contributions to the field of semiconductor technology. With a total of nine patents to his name, Tsang has made significant advancements in high voltage semiconductor devices and power MOSFET technology. His work has had a profound impact on the efficiency and stability of electronic devices.
Latest Patents
One of Tsang's latest patents is focused on edge termination for high voltage semiconductor devices. This innovation addresses the challenges faced by lightly doped p-type substrates, which are susceptible to depletion and inversion from positive charges. By introducing second termination regions that are more heavily doped than the substrate but less so than the first termination regions, Tsang's design enhances the ability of termination structures to block high voltages. This improvement raises the field threshold voltage, making the structure less sensitive to positive charges at the surface.
Another significant patent is for a self-aligned power MOSFET device with a recessed gate and source. This invention involves a substrate that includes a P-body layer and an N-drain layer, with a trenching protective layer patterned to define exposed areas. The design allows for the formation of vertically-oriented source and body layers, creating vertical channels that enhance the performance of the device. The innovative approach to doping and trench formation contributes to the overall efficiency of the power MOSFET.
Career Highlights
Throughout his career, Dah W Tsang has worked with prominent companies in the semiconductor industry, including Advanced Power Technology Corporation and Microsemi Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, leading to the successful patenting of his technologies.
Collaborations
Tsang has collaborated with several notable individuals in his field, including Douglas A Pike, Jr. and Theodore O Meyer. These collaborations have contributed to the advancement of semiconductor technologies and have fostered a spirit of innovation within the industry.
Conclusion
Dah W Tsang's contributions to semiconductor technology through his patents and collaborations highlight his role as a leading inventor in the field. His innovative solutions continue to influence the development of high voltage devices and power MOSFETs, showcasing the importance of his work in advancing electronic technology.