Masaharu Tomita

Title: The Innovative Contributions of Masaharu Tomita

Introduction

Masaharu Tomita is a notable inventor based in Mobara, Japan. He has made significant contributions to the field of field emission devices, holding a total of five patents. His work has advanced the technology surrounding electron emission and device efficiency.

Latest Patents

One of his latest patents is a field emission device having interlayer connections. This device allows for a focusing electrode to be arranged around a gate electrode without any restrictions. The design includes a gate electrode positioned on the upper surface of an insulating layer of a cathode substrate-side structure, with holes formed through both the insulating layer and the gate electrode. Each hole contains a conical emitter, and the insulating layer is designed to surround the gate electrode with a focusing electrode. Additionally, the insulating layer features a connection line, a resistive layer, and a cathode electrode line on its lower surface. The gate electrode connects to the connection line through a contact hole, while a gate electrode line connects through another contact hole.

Another significant patent is the field emission cathode, which aims to uniform the number of electrons emitted from each emitter. This invention prevents line defects even when a gate electrode is electrically short-circuited with an emitter. The movement of electrons in a channel formed on the channel forming electrode is controlled by applying a positive voltage to the current control electrode. This allows for the current supplied from the cathode electrode to the emitter to be regulated. In cases where the emitter is short-circuited with the gate electrode, the increased current density can destroy the channel, thus stopping the current supply to the emitter.

Career Highlights

Masaharu Tomita has worked with several prominent organizations throughout his career. He has been associated with Futaba Denshi Kogyo Co., Ltd. and has also served in the Director General Agency of Industrial Science and Technology. His experience in these roles has contributed to his expertise in the field of electronic devices.

Collaborations

Throughout his career, Tomita has collaborated with notable individuals such as Kazuhiko Tsuburaya and Shigeo Itoh. These collaborations have likely enriched his work and contributed to the advancements in his inventions.

Conclusion

Masaharu Tomita's innovative contributions to the field of field emission devices have made a significant impact on technology. His patents reflect a deep understanding