Location History:
- Kawasaki, JP (2013)
- Tokyo, JP (2003 - 2020)
Company Filing History:
3 out of 2,467 
2 out of 7,529 
Years Active: 2003-2020
Title: **Shin Koyama: Innovator in Semiconductor Technology**
Introduction
Shin Koyama is a prominent inventor based in Tokyo, Japan, recognized for his significant contributions to semiconductor technology. With a total of five patents to his name, Koyama has made notable strides in improving semiconductor devices, particularly through innovations involving nitride semiconductor layers.
Latest Patents
Koyama's latest patents showcase his expertise in developing advanced semiconductor devices. One of his key inventions is a semiconductor device that includes a plurality of nitride semiconductor layers. This innovation details a Metal Insulator Semiconductor Field-Effect Transistor (MISFET) where the gate electrode is formed over a nitride semiconductor layer, with a unique gate insulating film comprised of two differing oxide films made from two metals. The second metal, possessing lower electronegativity than the first, enables a shift of the threshold voltage into a positive direction, making it beneficial for the device's performance.
Another remarkable patent involves a semiconductor device that utilizes dual work function metals. This method describes a process for forming a semiconductor device that involves the use of a dummy metal gate layer, which is annealed to diffuse work function metals into a base insulator. This innovative approach ensures the formation of a high-k insulator on a metal gate, enhancing the operational efficiency of devices.
Career Highlights
Koyama has held significant positions at leading technology firms, including NEC Electronics Corporation and Renesas Electronics Corporation. His work at these companies has allowed him to pioneer advancements in semiconductor technology, further establishing his reputation as a leading inventor in the industry.
Collaborations
Throughout his career, Koyama has had the privilege of collaborating with notable professionals such as Koichi Ando and Mariko Makabe. Their collective expertise has undoubtedly contributed to the successful development of Koyama's innovative patents.
Conclusion
Shin Koyama’s contributions to semiconductor technology exemplify a commitment to innovation and excellence. His patented inventions not only enhance the functionality of semiconductor devices but also pave the way for future advancements in the field. With a focus on improving device performance through novel methods, Koyama continues to be a key figure in the realm of electronics.