Company Filing History:
Years Active: 2000-2003
Title: Kazutoshi Ohisa: Innovator in Organic Electroluminescent Devices
Introduction
Kazutoshi Ohisa is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of organic electroluminescent (EL) devices, holding a total of 5 patents. His work focuses on enhancing the performance and reliability of these devices, which are crucial for modern display technologies.
Latest Patents
Ohisa's latest patents include innovative designs for organic EL devices. One notable invention involves a light-emitting layer that contains a specific coumarin derivative, along with a hole injecting and/or transporting layer made from a specific tetraaryldiamine derivative. This design allows for at least two light-emitting layers, enabling high luminance and continuous light emission while ensuring reliability. Additionally, he has developed an organic EL device featuring an electron injecting electrode made from an AlLi alloy, which improves film formability and adhesion, resulting in high efficiency and long-lasting display quality.
Career Highlights
Kazutoshi Ohisa is currently associated with TDK Corporation, where he continues to push the boundaries of organic EL technology. His work has been instrumental in advancing the capabilities of display devices, making them more efficient and reliable.
Collaborations
Ohisa has collaborated with notable colleagues, including Isamu Kobori and Kenji Nakaya, contributing to the innovative advancements in the field of organic electroluminescent devices.
Conclusion
Kazutoshi Ohisa's contributions to organic EL devices have significantly impacted the display technology landscape. His innovative patents and collaborations highlight his role as a leading inventor in this field.