Richard A Kiehl

Title: Richard A Kiehl: Innovator in Semiconductor Technology

Introduction

Richard A Kiehl is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work primarily focuses on logic and memory elements, showcasing his expertise in innovative electronic designs.

Latest Patents

One of Kiehl's latest patents involves a logic or memory element based on n-stable phase-locking of a single-electron tunneling (SET) element. This invention includes at least one tunneling junction with a minute metal-insulator-metal sandwich structure. A biasing power source is connected in series to the tunneling junction, with its ON/OFF operation controlled by an external control input. The SET oscillations generated in the tunneling junction are phase-locked to subharmonics of a pump signal supplied from an AC power source, allowing for the exhibition of multiple stable phase states. Additionally, a logic network is formed using multiple gates, each incorporating the SET element to perform predetermined logic operations in a computer.

Another significant patent by Kiehl details a method of manufacturing a semiconductor device with metallic precipitate. In this process, a superlattice of LT-GaAs layers and other semiconductor layers, such as LT-AlGaAs or HT-GaAs, is grown on a substrate. Lattice imperfections, such as strain or crystal defects, are selectively introduced, followed by annealing to produce As precipitates at specific locations within the LT-GaAs layers. This method enables the manufacturing of various semiconductor devices, particularly SET devices, utilizing the metallic precipitates.

Career Highlights

Richard A Kiehl is currently employed at Fujitsu Corporation, where he continues to innovate in the semiconductor field. His work has significantly impacted the development of advanced electronic components and systems.

Collaborations

Kiehl has collaborated with Toshio Ohshima, contributing to the advancement of semiconductor technologies through their combined expertise.

Conclusion

Richard A Kiehl's contributions to semiconductor technology through his innovative patents and work at Fujitsu Corporation highlight his role as a leading inventor in the field. His advancements continue to shape the future of electronic devices and systems.