Location History:
- Toda, JP (1982)
- Tokyo, JP (1985)
Company Filing History:
Years Active: 1982-1985
Title: Morihiro Niimi: Innovator in Semiconductor Technology
Introduction
Morihiro Niimi is a prominent inventor based in Toda, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on innovative manufacturing methods and device designs that enhance the performance and efficiency of semiconductor devices.
Latest Patents
One of Niimi's latest patents is a manufacturing method for an MIS-type semiconductor device. This method features a single masking operation that defines source, gate, and drain windows simultaneously in an upper insulating oxide layer. The polysilicon layer is separated from the semiconductor substrate by a thin insulating oxide layer, which serves as the gate oxide. The process involves the deposition of an overall capping nitride layer, followed by selective removal of layers using low-resolution photoresist. This innovative approach ensures that the resulting gate electrode is precisely centered between the source and drain windows, sealed on all three sides by a protective oxide layer.
Another notable patent is for a surface-acoustic-wave device. This device consists of a laminate formed of a semiconductor and a piezoelectric layer. It includes a depletion layer control means that is locally provided at the interface of the semiconductor and the piezoelectric layer. The device allows for parametric interaction in regions other than where the depletion layer control means is located, enabling control of the depletion layer capacitance through the application of a DC bias voltage and a pumping voltage.
Career Highlights
Morihiro Niimi has built a successful career at Clarion Co., where he continues to innovate in semiconductor technology. His expertise and dedication to research have positioned him as a key figure in the industry.
Collaborations
Niimi has collaborated with notable coworkers, including Shoichi Minagawa and Takamasa Sakai. Their combined efforts have contributed to advancements in semiconductor manufacturing and device design.
Conclusion
Morihiro Niimi's contributions to semiconductor technology through his patents and innovative methods have made a significant impact in the field. His work continues to influence the development of advanced semiconductor devices, showcasing his role as a leading inventor in this domain.