Location History:
- Papworth Eugraro, GB (2003)
- Papworth Eugrard, GB (2004)
Company Filing History:
Years Active: 2003-2004
Title: Innovations by Alan Shafi in Bipolar Junction Transistor Technology
Introduction
Alan Shafi is an innovative inventor based in Papworth Eugrard, GB, known for his significant contributions to the field of semiconductor technology. With a total of two patents to his name, Shafi has demonstrated his expertise in developing advanced transistor structures that enhance the functionality of CMOS processes.
Latest Patents
Shafi's latest patent focuses on a "Method for making high-gain vertical bipolar junction transistor structures compatible with CMOS process." This invention presents an improved NPN bipolar transistor that can be integrated with CMOS FET processing. The process involves forming the transistor on a substrate using a CMOS framework combined with an additional masking and implant step. The innovative design employs CMOS N wells to create collector contacts and P wells to establish the base. Furthermore, N doped third wells are strategically positioned under the N and P wells, as well as shallow trench isolation regions, to provide efficient subcollectors. This design results in reduced basewidths and increased current gain, aided by gate electrode masking elements that enhance emitter-to-base breakdown voltage. The meticulous process of using CMOS source/drain N-type implants allows for the formation of emitters and ohmic contacts, while P-type implants complete the ohmic base contacts necessary to finish the bipolar transistor.
Career Highlights
Alan Shafi is currently associated with Chartered Semiconductor Manufacturing Ltd, a corporation recognized for its advancements in semiconductor technology. His work reflects a commitment to pushing the boundaries of innovation in the industry.
Collaborations
Throughout his career, Shafi has collaborated with notable coworkers such as Shesh Mani Panday and Yong Ju. Such partnerships reflect the collaborative spirit within the semiconductor field, fostering advancements through shared knowledge and expertise.
Conclusion
Alan Shafi's contributions to the field of bipolar junction transistors exemplify the spirit of innovation that drives technological advancements in semiconductor manufacturing. His patents reflect a deep understanding of the complexities involved in CMOS technologies, solidifying his reputation as a significant figure in contemporary invention and innovation.