Tamotsu Toyooka

Title: Tamotsu Toyooka: Innovator in Semiconductor Technology

Introduction

Tamotsu Toyooka is a prominent inventor based in Itabashi, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on improving the efficiency and performance of semiconductor integrated circuits.

Latest Patents

One of Toyooka's latest patents is a semiconductor integrated circuit designed to ensure that a stable voltage is applied to a cell for high-speed operation. This innovation reduces the number of lengthy wirings around a cell row without increasing the chip area, thereby enhancing line efficiency. The design incorporates wide power source and ground lines that cover nearly the entire surface of the cell, which minimizes electrical resistance and stabilizes voltage for high-speed operations. Additionally, penetrating lines are utilized to connect cells, further improving line efficiency.

Another notable patent involves a semiconductor integrated circuit that includes a semiconductor chip with a PN junction diode group on its surface. This diode group is supplied with a constant current in the forward direction, allowing the potential difference between its terminals to change according to the chip's surface temperature. A potential difference generating circuit is employed to create a fixed potential difference corresponding to a predetermined limit temperature. When the chip surface reaches this limit temperature, the operation of the circuit device is temporarily or completely halted, ensuring the safety and reliability of the semiconductor device.

Career Highlights

Tamotsu Toyooka is currently associated with Sharp Kabushiki Kaisha Corporation, where he continues to innovate in semiconductor technology. His work has been instrumental in advancing the capabilities of integrated circuits, making them more efficient and reliable.

Collaborations

Throughout his career, Toyooka has collaborated with notable colleagues such as Yoshiki Shibata and Masashi Yonemaru. These collaborations have contributed to the development of cutting-edge technologies in the semiconductor field.

Conclusion

Tamotsu Toyooka's contributions to semiconductor technology through his innovative patents have significantly impacted the industry. His work exemplifies the importance of continuous innovation in enhancing the performance and efficiency of electronic devices.