Company Filing History:
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Years Active: 2010-2012
Title: Innovations of Hideyuki Yashima
Introduction
Hideyuki Yashima is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work focuses on enhancing the precision and efficiency of semiconductor devices, particularly in memory cell applications.
Latest Patents
Yashima's latest patents include a semiconductor device utilizing a dummy gate to enhance processing precision. This invention involves the processing of memory cells forming a nonvolatile memory in a semiconductor device. A second polysilicon film is formed to cover a first polysilicon film and a dummy gate electrode. The design reflects the shapes of a step difference portion and a gap groove, with a concave part formed in the second polysilicon film covering the gap groove. An antireflection film is subsequently formed over the second polysilicon film, ensuring that it compensates for the flow of the antireflection film from the concave part. Another notable patent is for a semiconductor device and a method of manufacturing the same. This invention features a floating gate electrode for accumulating charges, which is covered with a cap insulating film and a pattern of a first insulating film. The second insulating film, formed by a silicon nitride film through a plasma CVD method, enhances the data retention characteristics of flash memory by preventing water or hydrogen ions from diffusing to the floating gate electrode.
Career Highlights
Throughout his career, Yashima has worked with notable companies such as Renesas Electronics Corporation and Renesas Technology Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.
Collaborations
Yashima has collaborated with several talented individuals in the field, including Hideaki Yamakoshi and Shinichiro Abe. These collaborations have contributed to the advancement of semiconductor innovations and the successful development of new technologies.
Conclusion
Hideyuki Yashima'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 advancements in memory cell applications and semiconductor devices.