Company Filing History:
Years Active: 2019-2022
Title: Kouji Mukai: Innovator in Semiconductor Technology
Introduction
Kouji Mukai is a prominent inventor located in Minami-Alps, Japan. With an impressive portfolio of three patents, he has made significant contributions to the field of semiconductor technology, particularly focusing on devices that enhance reliability and reduce production costs.
Latest Patents
Among his latest innovations is a semiconductor device that incorporates an Insulated Gate Bipolar Transistor (IGBT) and a diode featuring a field stop layer formed of hydrogen donor and helium. This patent describes a unique process involving multiple sessions of proton irradiation, which are performed at varying ranges from the substrate's rear surface. The invention delineates the creation of multiple n-type layers of differing depths where protons are activated, and helium is introduced to induce lattice defects. A notable aspect of this device is the method of adjusting lattice defects through heat treatment, which allows for the diffusion of protons into a fifth n-type layer. This layer interfaces with the fourth n-type layer and features a carrier concentration that decreases more gradually towards the anode. This innovative approach results in an n-type FS layer that optimizes the semiconductor device for enhanced reliability while simultaneously lowering production costs.
Career Highlights
Kouji Mukai is associated with Fuji Electric Co., Ltd., where he applies his expertise in semiconductor technologies. His work demonstrates a commitment to advancing electronic devices that meet the growing demands of modern technology.
Collaborations
Collaborating with another talented inventor, Souichi Yoshida, Mukai has strengthened his research and development efforts, contributing to the advancement of the semiconductor industry. Their teamwork reflects a synergy that fosters creative solutions and innovative applications.
Conclusion
Kouji Mukai’s dedication to semiconductor innovation highlights the essential role of inventors in shaping technology. His recent patents not only reflect his expertise but also pave the way for improvements in device reliability and cost-effectiveness in the electronics market.