Location History:
- Kunitachi, JP (1996 - 2008)
- Kokubunji, JP (2007 - 2008)
- Koganei, JP (2009 - 2013)
- Tokyo, JP (2017 - 2024)
Company Filing History:
8 out of 42,508 
6 out of 134 
5 out of 66 
Years Active: 1996-2024
Title: Innovations of Shigehisa Tanaka: A Pioneer in Semiconductor Technology
Introduction: Shigehisa Tanaka is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of semiconductor technology. With a remarkable portfolio that includes 21 patents, Tanaka has made substantial advancements that enhance the efficiency and effectiveness of semiconductor light-receiving elements.
Latest Patents: Among Tanaka's latest innovations is a patented design for a semiconductor light-receiving element. This invention incorporates a semiconductor substrate along with a high-concentration layer of a first conductivity type formed on the substrate. Additionally, it features a low-concentration layer of the same conductivity type, which is designed to be in contact with the high-concentration layer. Furthermore, the device comprises a low-concentration layer of a second conductivity type, forming a PN junction interface with the low-concentration layer of the first conductivity type. Completing the element is a high-concentration layer of the second conductivity type that is situated on the low-concentration layer of the second conductivity type. The distinct characteristic of the low-concentration layers is that they possess a carrier concentration of less than 1×10/cm, while the high-concentration layers boast a carrier concentration of 1×10/cm or more. Notably, at least one of the low-concentration layers contains an absorption layer with a band gap that effectively absorbs incident light.
Career Highlights: Shigehisa Tanaka has held pivotal roles in esteemed organizations, including Hitachi, Ltd. and Opnext Japan, Inc. His extensive experience at these companies has contributed to his expertise in semiconductor technology and innovation, further solidifying his reputation as a leader in the industry.
Collaborations: Throughout his career, Tanaka has had the pleasure of collaborating with fellow innovators, including Yasunobu Matsuoka and Akihisa Terano. These collaborations have facilitated the exchange of ideas and led to the development of cutting-edge technologies within the semiconductor field.
Conclusion: Shigehisa Tanaka's contributions to semiconductor innovation are significant and impactful. With numerous patents to his name and a strong professional background, he continues to inspire future generations of inventors within the technology sector. His work not only advances the science of semiconductors but also lays the groundwork for future breakthroughs that will enhance modern technology.