Company Filing History:
Years Active: 1995-1997
Title: Innovations of William A. Krieger: Pioneering Solutions for ESD Protection
Introduction
William A. Krieger, an inventive force hailing from North Andover, Massachusetts, has made substantial contributions to the field of semiconductor technology. With a total of seven patents to his name, he has focused particularly on innovations that enhance the reliability and efficiency of integrated circuits (ICs) against electrostatic discharge (ESD).
Latest Patents
Among his latest patents, Krieger has developed an integrated circuit that incorporates a diode-connected transistor specifically designed to reduce ESD effects. This diode-connected transistor functions effectively during an ESD event by transforming into a transistor in the active region. The device features an annular collector located at the cell's outer perimeter, a circular base that is concentric with the collector, and an annular emitter positioned close to the base's outer edge. During an ESD spike, the structure enables a flow of reverse bias current, thus facilitating a seamless transition to forward bias conditions that ultimately allows for a change in the ESD current's pathway. This innovative design significantly improves ESD tolerance while maintaining low parasitic capacitance.
Additionally, another of his significant patents involves an ESD protective clamp device composed of a two-terminal diode formed within an isolated chip cell. This device utilizes a buried layer of silicon containing P-type dopant, with an annular anode plug formed from P+ doping at the outer regions of the epitaxial layer. The internal N-type plug serves as the cathode, providing efficient electrical connections for protection against ESD events in integrated circuits.
Career Highlights
Krieger's professional journey is marked by his association with Analog Devices, Inc., where he has driven numerous advancements in semiconductor protection technology. His work not only enhances device performance but also significantly impacts the overall reliability of electronic systems in various applications.
Collaborations
Throughout his tenure at Analog Devices, Inc., Krieger has collaborated with noteworthy colleagues such as David F. Beigel and Derek W. Robinson. These partnerships have fostered an environment of innovation and excellence, resulting in the development of state-of-the-art technology that addresses critical challenges faced in the electronics industry.
Conclusion
William A. Krieger stands out as a visionary inventor whose patents reflect a commitment to advancing integrated circuit technology. His cutting-edge solutions for ESD protection demonstrate his expertise and dedication to improving the durability and functionality of electronic devices. As a key contributor at Analog Devices, Inc., he continues to influence the field with his remarkable innovations, shaping the future of semiconductor technology.