Location History:
- Chigaskai, JP (2015)
- Kanagawa, JP (2014 - 2023)
- Chigasaki, JP (2016 - 2024)
Company Filing History:
23 out of 16,612 
1 out of 52,711 
Years Active: 2014-2025
Title: Keisuke Murayama: Innovator in Semiconductor Technology
Introduction
Keisuke Murayama is a prominent inventor located in Kanagawa, Japan, known for his significant contributions to the semiconductor field. With an impressive portfolio of 23 patents, his work has greatly influenced the enhancement of semiconductor devices, particularly through innovative designs and manufacturing methods.
Latest Patents
Among his latest inventions is a semiconductor device comprising various thin-film transistors. This design incorporates oxide semiconductor stacked layers positioned between dual gate electrode layers, which are separated by insulating layers. Notably, the channel formation region is thinner than the surrounding regions, allowing one gate electrode to function as a back gate. This configuration enables effective control of the threshold voltage, facilitating the maintenance of the normally-off characteristics of the transistor.
Another noteworthy patent involves a semiconductor device and method aimed at reducing defects in oxide semiconductor films. This innovation improves the electrical characteristics and reliability of devices featuring oxide semiconductor films. The design details a transistor system where a gate electrode is formed over a substrate, accompanied by a gate insulating film and a multilayer film. Both oxide insulating films are carefully engineered to optimize oxygen levels to enhance the device's performance.
Career Highlights
Keisuke Murayama’s career includes significant roles at major companies in the semiconductor industry, including Semiconductor Energy Laboratory Co., Ltd. and Toshiba Corporation. His extensive experience in these organizations has equipped him with unique insights and expertise in advancing semiconductor technologies.
Collaborations
Throughout his career, Murayama has collaborated with noteworthy individuals such as Daisuke Matsubayashi and Junichi Koezuka. These partnerships have further propelled his research and developments in semiconductor applications.
Conclusion
Keisuke Murayama stands out as an influential figure in semiconductor technology, with a remarkable list of patents underscoring his innovative efforts. His continuous work is instrumental in shaping the future of electronic devices, driving improvements in performance and reliability in the semiconductor 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.