Location History:
- Ora-Gun, JP (1999)
- Oizumi-machi, JP (2004)
- Gunma, JP (2003 - 2007)
Company Filing History:
Years Active: 1999-2007
Title: Hiroki Etou: Innovator in Semiconductor Technology
Introduction
Hiroki Etou is a prominent inventor based in Gunma, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 5 patents. His work focuses on enhancing the performance and reliability of protection circuit devices using MOSFETs.
Latest Patents
One of Hiroki Etou's latest patents is a protection circuit device using MOSFETs and a method of manufacturing the same. This innovative device features multiple conductive paths that are electrically separated. It incorporates a MOSFET chip that integrates two power MOSFETs into one chip, where the gate electrode and source electrode are fixed on the desired conductive path. The design includes conductive material on a common drain electrode of the MOSFET, with insulating resin covering the MOSFET and supporting the conductive path as a single unit. This configuration allows for low ON-state resistance by removing the drawing-around of the common drain electrode and fixing the source electrode directly on the conductive path.
Another significant patent by Etou is a method of manufacturing a semiconductor device. In conventional power MOSFETs, electric field concentration occurs at the gate electrode's bottom portion on the outermost periphery of the operating area, leading to a deterioration in high voltage strength between the drain and source. Etou's invention addresses this issue by creating a trench at the outermost periphery of the operating area that is shallower than the trenches within the operating area. This design relieves electric field concentration and suppresses deterioration in high voltage strength. Additionally, by narrowing the outermost peripheral trench aperture, trenches of varying depths can be formed using the same manufacturing step.
Career Highlights
Hiroki Etou is currently employed at Sanyo Electric Co., Ltd., where he continues to innovate in the semiconductor field. His work has been instrumental in advancing the technology used in various electronic devices.
Collaborations
Etou has collaborated with notable colleagues, including Noriaki Sakamoto and Yoshiyuki Kobayashi. Their combined expertise has contributed to the successful development of innovative semiconductor solutions.
Conclusion
Hiroki Etou's contributions to semiconductor technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the design and manufacturing of advanced electronic components.