Masahisa Iida

Title: Innovations by Masahisa Iida: A Pioneer in Semiconductor Technology

Introduction

Masahisa Iida, an esteemed inventor based in Osaka, Japan, has made significant contributions to the field of semiconductor technology. With a total of 13 patents to his name, Iida's work has revolutionized how memory devices and integrated circuits function, enhancing the efficiency and performance of electronic devices.

Latest Patents

Among his latest innovations is a semiconductor memory device that features a hierarchical bit line architecture. In this design, the main memory array is divided into two sub-memory arrays. Notably, the number of sub bit lines is twice that of the main bit lines. The global data lines are formed within the same metal interconnect layer as the main bit lines, minimizing the increase in interconnects used in memory macros. This innovative design also ensures that after charge sharing of the bit lines, the global data lines maintain a pre-charge state during amplification, functioning as shields for the main bit lines. This reduces interference noise between adjacent main bit lines, significantly improving operating characteristics.

Additionally, he has developed a semiconductor integrated circuit that includes a power generation block and a power supply control block. This power generation block is configured to generate internal power via a charge pump circuit, while the power supply control block regulates this generation. The circuit features first and second power supply interconnects, which are individually separated from external power supply interconnects, enhancing reliability and performance. Importantly, at least one of these power supply interconnects is equipped with a filter section designed to eliminate noise propagating through the interconnect.

Career Highlights

Iida has had a distinguished career, having worked with notable companies such as Panasonic Corporation and Matsushita Electric Industrial Co., Ltd. His work in these leading organizations has contributed to significant technological advancements in semiconductor devices and has cemented his reputation as an innovator in this domain.

Collaborations

Throughout his career, Iida has worked alongside talented individuals such as Masanobu Hirose and Kiyoto Ohta. These collaborations have fostered an environment of creativity and innovation, allowing for the development of cutting-edge solutions in semiconductor technology.

Conclusion

Masahisa Iida's contributions to the semiconductor industry through his inventive designs and patents reflect his commitment to advancing technology. His latest innovations not only improve the performance of electronic devices but also pave the way for future advancements in the field. As the demand for efficient and high-performance semiconductor solutions grows, Iida's work will undoubtedly play a critical role in shaping the future of technology.