Hirohisa Iizuka

Title: Innovations and Contributions of Hirohisa Iizuka in Semiconductor Technology

Introduction

Hirohisa Iizuka, based in Yokohama, Japan, is a prolific inventor with an impressive portfolio of 21 patents. His work primarily focuses on advancements in semiconductor memory technology, which play a crucial role in modern electronics.

Latest Patents

Among his latest innovations are notable patents that address efficiency and safety in semiconductor memory devices. One significant patent details a semiconductor memory design that prevents electric short circuits between a word line and a semiconductor substrate. This device includes a non-volatile memory comprised of a memory cell array, element isolating regions, a second trench, and a word line. The memory cell array features memory cells arranged in a matrix format, with floating electrodes. Each element isolating region contains a first trench filled with an isolating filler and a second trench positioned between the floating electrodes, enhancing the operational safety and performance of the device.

Another recent patent describes a semiconductor device with multiple word lines, divided into odd and even sets. This innovative structure spans from a first to a second end region through a designated cell region, facilitating enhanced organization and function within the semiconductor architecture. The design includes dummy word line portions at both ends, optimizing performance and reliability.

Career Highlights

Hirohisa Iizuka's career is highlighted by his affiliation with Kabushiki Kaisha Toshiba, a leading company in semiconductor technology. His contributions have significantly advanced the company's position in the technology sector.

Collaborations

Iizuka has collaborated with notable colleagues, including Riichiro Shirota and Hiroaki Hazama, to drive innovation and develop cutting-edge semiconductor solutions. Their combined expertise has led to significant advancements in their field.

Conclusion

Through his innovative patents and collaborative efforts, Hirohisa Iizuka continues to make substantial contributions to the world of semiconductor technology. His work not only enhances the performance of electronic devices but also promotes further research and development in the field.