Hideakii Kurata

Title: Innovations of Hideakii Kurata

Introduction

Hideakii Kurata is a notable inventor based in Kokubunji, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of four patents. His work primarily focuses on nonvolatile semiconductor memory devices, which are crucial for modern electronic applications.

Latest Patents

Kurata's latest patents include innovative designs for nonvolatile semiconductor memory devices. One of his patents describes a nonvolatile semiconductor memory device that features a memory cell formed in a substrate well. This device includes a source, a drain, a first gate, and a second gate. The design incorporates a word line control circuit that drives a word line connected to the second gate. Additionally, a program data holding circuit retains program data, while a programming voltage generator circuit applies a programming voltage to a bit line connected to the drain. The verification process is conducted by a discrimination circuit that checks the program data. Programming is achieved by applying positive voltages to the second gate and drain, while injecting hot electrons generated in the channel portion near the drain. Verification involves applying a verify voltage to the second gate and monitoring the voltage at the drain to determine if it is maintained or drops to 0V, based on the threshold voltage.

Another patent by Kurata also focuses on a nonvolatile semiconductor memory device. In this design, the programming operation of data is conducted by injecting hot electrons generated between a source layer and a drain layer of a memory cell into a floating gate. Verification of the programmed data is performed by assessing whether the voltage applied to the drain is maintained, depending on the height of the memory cell's threshold voltage.

Career Highlights

Throughout his career, Hideakii Kurata has worked with prominent companies, including Hitachi, Ltd. His expertise in semiconductor technology has positioned him as a key figure in the development of advanced memory devices.

Collaborations

Kurata has collaborated with notable colleagues such as Shunichi Saeki and Naoki Kobayashi. Their combined efforts have contributed to the advancement of semiconductor technologies.

Conclusion

Hideakii Kurata's innovative work in nonvolatile semiconductor memory devices has made a significant impact on the field of electronics. His patents reflect a deep understanding of semiconductor technology and its applications. His contributions continue to influence the development of modern memory solutions.