Location History:
- Hyogo, JP (2000)
- Tokyo, JP (2000 - 2004)
Company Filing History:
2 out of 21,351 
1 out of 3,781 
Years Active: 2000-2004
Title: The Innovative Contributions of Makoto Ooi
Introduction
Makoto Ooi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on enhancing the performance and efficiency of semiconductor devices.
Latest Patents
One of his latest patents is a semiconductor memory device. This invention provides a semiconductor memory device featuring a trench part that serves as an isolation area formed on a semiconductor substrate. It includes a control gate used for managing write and read operations, which is formed orthogonally to the trench part. Additionally, a source line of a first diffused layer is created on the surface of the trench part along one of the longitudinal sides of the control gate. A silicide layer is formed over the surface of the source line, and a drain of a second diffused layer is positioned between the trench parts on the other longitudinal side.
Another significant patent is a method of manufacturing a semiconductor device. This method involves forming a fine field oxide film with minimal upheaval of a bird's head to improve the electrical characteristics of a conductive layer. A planarizing silicon film is created on a silicon nitride film and a thermal oxide film to smooth out any concave areas. The planarizing silicon film is then thermally oxidized to form a planarizing thermal oxide film integrated with the thermal oxide film. After etching back the planarizing thermal oxide film, the field oxide film is formed, followed by the removal of the silicon nitride film and a polycrystalline silicon film. Finally, a conductive layer with end portions positioned on the field oxide film is established.
Career Highlights
Throughout his career, Makoto Ooi has worked with prominent companies in the semiconductor industry. He has been associated with Mitsubishi Electric Corporation and Renesas Technology Corporation, where he contributed to various innovative projects.
Collaborations
Makoto Ooi has collaborated with several talented individuals in his field, including Kojiro Yuzuriha and Shinichi Kobayashi. Their combined expertise has further advanced the development of semiconductor technologies.
Conclusion
Makoto Ooi's contributions to semiconductor technology through his patents and collaborations highlight his innovative spirit and dedication to advancing the field. His work continues to influence the development of efficient semiconductor devices.