Keiko Yamamichi

Title: Keiko Yamamichi: Innovator in Organic Electroluminescent Devices

Introduction

Keiko Yamamichi is a prominent inventor based in Sodegaura, Japan. She has made significant contributions to the field of organic electroluminescent devices, holding a total of 8 patents. Her work focuses on enhancing the efficiency and longevity of these devices, which are crucial for modern display technologies.

Latest Patents

Among her latest innovations is an organic electroluminescent device that features an organic thin film layer. This layer comprises a phosphorescent light-emitting layer that contains a host material and a phosphorescent organic metal complex. Notably, the device is designed to maintain a total halogen element mass concentration of bromine, iodine, and chlorine at 50 ppm or less, resulting in high emission luminance, luminous efficiency, and extended lifespan. Another significant patent involves an organic EL device that includes multiple emitting layers made from a host material with a triplet energy gap between 2.52 eV and 3.7 eV. This device utilizes a dopant with light-emitting properties related to a triplet state, incorporating a heavy metal complex.

Career Highlights

Keiko Yamamichi is currently employed at Idemitsu Kosan Company, Limited, where she continues to push the boundaries of innovation in her field. Her work has garnered attention for its potential applications in various electronic devices, making her a key figure in the industry.

Collaborations

Throughout her career, Keiko has collaborated with notable colleagues, including Chishio Hosokawa and Toshihiro Iwakuma. These partnerships have contributed to the advancement of her research and the successful development of her patents.

Conclusion

Keiko Yamamichi stands out as a leading inventor in the realm of organic electroluminescent devices. Her innovative patents and collaborations reflect her commitment to advancing technology in this vital area.