Ken-ichi Oki

Title: Inventor Ken-ichi Oki: Innovations in Thin-Film Transistor Technology

Introduction

Ken-ichi Oki is an accomplished inventor based in Kawasaki, Japan, with a notable portfolio that includes nine patents. His work primarily focuses on advancements in thin-film transistors (TFTs), which are essential components in modern electronics.

Latest Patents

One of Ken-ichi Oki's latest patents details a method for fabricating thin-film transistors. This method involves the selective application of a conductive material to the surfaces of the source and drain electrodes of stagger-type TFTs, enabling the effective formation of an active semiconductor layer. For inverted-stagger-type TFTs, Oki’s approach allows for the use of a selectively deposited conductive material as source and drain electrodes, eliminating the need for patterning. His innovations also include processes that utilize etching and deposition sequences at temperatures of 200°C or lower, ensuring the integrity of the semiconductor layers. Additionally, he has contributed to enhancing the etching rate of insulating films by modifying their hydrogen or halogen content.

Another significant patent involves the design of a thin-film transistor matrix device. This device features a unique arrangement of picture element electrodes on an insulating substrate, coupled with strategically designed source electrodes, drain electrodes, and gate electrodes. Notably, the narrowing of the gate electrodes in relation to the gate insulating films effectively minimizes leak currents, leading to a TFT matrix device that boasts reduced wasteful current consumption.

Career Highlights

Ken-ichi Oki has established himself as a vital figure in the field of semiconductor technology through his role at Fujitsu Corporation. His contributions have enhanced the efficiency and performance of electronic devices, which are pivotal in the advancement of consumer electronics and display technologies.

Collaborations

Throughout his career, Ken-ichi Oki has worked alongside esteemed colleagues such as Ken-ichi Yanai and Tsutomu Tanaka. Their collaborative efforts have further pushed the boundaries of innovation in thin-film technology, leading to numerous advancements that benefit various industries.

Conclusion

With nine patents to his name, Ken-ichi Oki exemplifies the spirit of innovation in the realm of thin-film transistors. His contributions not only reflect his technical expertise but also highlight the importance of collaboration in driving technological advancements that have significant implications for future electronic devices.