Seiichi Shirai

Title: Seiichi Shirai: Innovator in Thin Film Silicon Semiconductor Technology

Introduction

Seiichi Shirai is a notable inventor based in Higashimurayama, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of thin film silicon semiconductor devices. With a total of 2 patents to his name, Shirai's work has had a considerable impact on the industry.

Latest Patents

Shirai's latest patents focus on a thin film silicon semiconductor device and the process for producing it. The invention describes a thin polycrystalline silicon film that has a lattice constant smaller than that of a silicon single crystal and a small crystal grain size. This innovative film is created by depositing a thin amorphous silicon film in an inert gas at a pressure of 3.5 Pa or lower using a sputtering deposition method. The amorphous silicon film is then annealed for a brief period of 10 seconds or less to achieve polycrystallization. The resulting thin film silicon semiconductor device exhibits excellent characteristics, including a carrier mobility of 100 cm²/V·s or higher.

Career Highlights

Seiichi Shirai is currently associated with Nippon Telegraph and Telephone Corporation, where he continues to advance his research and development efforts in semiconductor technology. His work has been instrumental in enhancing the performance and efficiency of silicon-based devices.

Collaborations

Shirai has collaborated with esteemed colleagues such as Tadashi Serikawa and Akio Okamoto. These partnerships have fostered innovation and contributed to the success of various projects within the semiconductor field.

Conclusion

Seiichi Shirai's contributions to thin film silicon semiconductor technology exemplify his dedication to innovation in the field. His patents and ongoing work continue to influence the development of advanced semiconductor devices.