Company Filing History:
1 out of 266 
1 out of 3 Years Active: 2009
Title: Koji Shigenobu: Innovator in Switch Lighting Technology
Introduction
Koji Shigenobu is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of electronic lighting technology. His innovative approach has led to the development of a unique switch illuminating EL sheet, which enhances user experience in electronic devices.
Latest Patents
Shigenobu holds a patent for a "Switch lighting EL sheet and lighting switch and electronic apparatus using it." This invention features a structure that includes a transparent protection film, a transparent electrode layer, a light emitting layer, a dielectric layer, and a back electrode layer, all layered in order from the light emitting face side. The transparent protection film has a thickness ranging from 10 μm to 60 μm. The transparent electrode layer is made of a conductive polymer, which allows the EL sheet to suppress wire breakage or failure to light due to keystroke stress. This design does not impair the reliability and clicking feeling of a key switch. The EL sheet is strategically arranged between a key top and a switch mechanism portion, serving as a light source for illuminating the key top portion.
Career Highlights
Throughout his career, Koji Shigenobu has worked with prominent companies, including Toshiba Materials Co., Ltd. and Sekonic Corporation. His experience in these organizations has contributed to his expertise in electronic lighting technologies.
Collaborations
Shigenobu has collaborated with notable coworkers such as Mitsuo Nakamura and Shunichi Yamada. Their collective efforts have further advanced the field of electronic lighting.
Conclusion
Koji Shigenobu's innovative work in switch lighting technology exemplifies the impact of creativity in the electronics industry. His patent for the switch illuminating EL sheet showcases his commitment to enhancing user experience in electronic devices.