Location History:
- Anan, JP (2002 - 2008)
- Awa, JP (2011)
- Tokushima, JP (2007 - 2013)
Company Filing History:
Years Active: 2002-2013
Title: Tomotsugu Mitani: A Pioneer in Nitride Semiconductor Technologies
Introduction
Tomotsugu Mitani is an accomplished inventor based in Tokushima, Japan, known for his significant contributions to the field of nitride semiconductor devices. With a remarkable portfolio of seven patents, Mitani has been instrumental in advancing technologies that enhance the performance of light-emitting diodes (LEDs) and laser diodes (LDs).
Latest Patents
Among his latest innovations, Mitani has developed a nitride semiconductor device that is primarily used in LD and LED applications. This device features either a three-layer structure or a superlattice structure of nitride, designed to improve output and decrease forward voltage (Vf). Specifically, the three-layer structure incorporates a nitride semiconductor layer doped with n-type impurities that serve as an n-type contact layer sandwiched between undoped nitride semiconductor layers. This design allows for a carrier concentration exceeding 3×10¹⁰ cm⁻³, while maintaining resistivity below 8×10⁹ Ω cm.
Furthermore, Mitani has also created a nitride semiconductor element utilizing a silicon substrate, which achieves a lower forward direction voltage compared to prior designs. This element ensures that at least part of the silicon substrate and the nitride semiconductor layer are integrated into a current pass region, with the electrical conductivity of this region being p-type, and predominantly hole carriers.
Career Highlights
Mitani's work has primarily been associated with Nichia Corporation, a leading company renowned for its innovations in lighting technology. His impressive contributions have significantly enhanced the company's portfolio and have made an impact on the semiconductor industry.
Collaborations
Throughout his career, Tomotsugu Mitani has collaborated with fellow inventors such as Koji Tanizawa and Yoshinori Nakagawa. Together, they have worked on various projects that aim to refine semiconductor technologies and expand their applications in the modern marketplace.
Conclusion
In summary, Tomotsugu Mitani stands out as a visionary inventor in the nitride semiconductor field, with a solid track record of impactful patents. His recent innovations not only push the boundaries of technology but also pave the way for future advancements in the realm of LEDs and laser diodes, solidifying his legacy within the industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.