This inventor holds 13 USPTO granted patents. Top assignees: Fujitsu Corporation, Sharp Kabushiki Kaisha Corporation. Active years: 1989-2008.
Location History:
- Atsugi, JP (1989)
- Kawasai, JP (2000)
- Kawasaki, JP (1995 - 2008)
Company Filing History:
12 out of 39,367 
1 out of 25,939 
Years Active: 1989-2008
Title: Ken-ichi Yanai: Innovator in Thin Film Transistor Technology
Introduction
Ken-ichi Yanai is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of thin film transistor technology, holding a total of 13 patents. His innovative methods have advanced the manufacturing processes of semiconductor devices.
Latest Patents
One of his latest patents is a method of manufacturing a thin film transistor device. This method includes forming and patterning a semiconductor film to create first and second semiconductor films for low-voltage and high-voltage driven thin film transistor formation regions. The process also involves forming a first insulating film on these semiconductor films and creating a first gate electrode in the low-voltage region. Additionally, a second insulating film is formed on the entire surface, with a second gate electrode in the high-voltage region. The method further includes etching the insulating films to create gate insulating films beneath the respective gate electrodes.
Another notable patent is a method for fabricating a thin-film transistor. This involves forming a contact layer on source and drain electrodes of a stagger-type TFT. A conductive material is selectively applied to the surface of these electrodes, allowing for the deposition of an active semiconductor layer. The method also details the removal of contaminated layers using plasma at controlled temperatures, enhancing the etching rate of insulating films.
Career Highlights
Ken-ichi Yanai has worked with notable companies such as Fujitsu Corporation and Sharp Corporation. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.
Collaborations
Throughout his career, Yanai has collaborated with esteemed colleagues, including Yutaka Takizawa and Ken-ichi Oki. These partnerships have fostered advancements in the field of thin film transistors.
Conclusion
Ken-ichi Yanai's contributions to thin film transistor technology have been instrumental in advancing semiconductor manufacturing processes. His innovative patents and collaborations reflect his commitment to innovation in this critical field.