Location History:
- Niigata, JP (2001 - 2003)
- Tochigi, JP (2004)
- Ashikaga, JP (2003 - 2005)
- Sanjyo, JP (2004 - 2006)
Company Filing History:
Years Active: 2001-2006
Title: Koichi Hirata: Innovator in Semiconductor Manufacturing
Introduction
Koichi Hirata is a prominent inventor based in Ashikaga, Japan. He has made significant contributions to the field of semiconductor manufacturing, holding a total of 15 patents. His innovative approaches have led to advancements in the efficiency and effectiveness of semiconductor devices.
Latest Patents
Hirata's latest patents include a method of manufacturing insulated gate semiconductor devices. This method involves a gate electrode that includes a first polysilicon film remaining on a first oxide film, with a part of a second polysilicon layer superimposed on the polysilicon layer. The design ensures that the thickness of the gate electrode on the first gate oxide film matches that of prior art, while the thickness on the second gate oxide films A and B is reduced. This innovation results in smaller height gaps between the gate electrode and the N+ type source and drain layers, enhancing the flatness of the interlayer oxide film.
Another notable patent is a semiconductor device manufacturing method using a mask slanting from the orientation flat. In this method, individual chip patterns are projected onto a (1 0 0) surface of a GaAs wafer, aligning the columns and rows of the chip patterns at a 45-degree angle to the [0 1 1] direction of the wafer. This technique significantly reduces chipping along the edges of the separated chips during the dicing process.
Career Highlights
Hirata has built a successful career at Sanyo Electric Co., Ltd., where he has been instrumental in developing cutting-edge semiconductor technologies. His work has not only advanced the company's product offerings but has also contributed to the broader field of electronics.
Collaborations
Throughout his career, Hirata has collaborated with notable colleagues, including Tetsuro Asano and Mikito Sakakibara. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.
Conclusion
Koichi Hirata's contributions to semiconductor manufacturing exemplify the spirit of innovation. His patents reflect a commitment to improving technology and enhancing device performance. His work continues to influence the industry and inspire future advancements in semiconductor technology.