Location History:
- Aichi-ken, JP (2009)
- Toyota, JP (2011)
Company Filing History:
3 out of 36,771 
1 out of 1,140 
Years Active: 2009-2011
Title: Innovations of Yukihiro Hisanaga
Introduction
Yukihiro Hisanaga is a notable inventor based in Toyota, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on improving the efficiency and cost-effectiveness of semiconductor devices.
Latest Patents
One of Hisanaga's latest patents is for an insulated gate-type semiconductor device and its manufacturing method. This invention aims to provide a device that achieves both a decrease in gate insulation dielectric strength voltage and a reduction in manufacturing costs. The process involves preparing a CZ bulk substrate, forming P-diffused and N-diffused layers through ion implantation and thermal diffusion treatment, and creating a gate trench via reactive ion etching. A gate insulation film containing carbon is then formed on the trench wall using a CVD method, followed by annealing to create a low defect area at the interface between the substrate and the insulation film.
Another significant patent is for a semiconductor device that incorporates both an IGBT element region and a diode element region within the same substrate. This device features a low lifetime region in the drift layer of the diode element, which shortens the lifetime of holes. The mean lifetime of holes in the drift layer is shorter in the IGBT element region compared to the diode element region, enhancing the device's performance.
Career Highlights
Yukihiro Hisanaga has worked with prominent companies in the automotive and semiconductor industries, including Toyota Motor Corporation and Toyota Central R&D Labs. His experience in these organizations has allowed him to develop innovative solutions that address industry challenges.
Collaborations
Throughout his career, Hisanaga has collaborated with talented individuals such as Takashi Suzuki and Sachiko Tanaka. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Yukihiro Hisanaga's contributions to semiconductor technology through his innovative patents demonstrate his expertise and commitment to advancing the field. His work continues to influence the industry and pave the way for future innovations.