Ryuuji Shibata

Title: Ryuuji Shibata: Innovator in Semiconductor Technology

Introduction

Ryuuji Shibata is a notable inventor based in Higashiyamato, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of six patents. His work has had a profound impact on the development of memory devices and manufacturing processes.

Latest Patents

One of Shibata's latest patents is a semiconductor memory device with data error compensation. This innovative device includes signal lines and a decoder that decodes an inputted address to output the decoded result to some of the signal lines. It features a matrixed memory array, with a part designated as a compensated area. The device also includes read-out means for retrieving data from memory cells based on a decode signal. A detector identifies when the address relates to the compensated area, allowing for a fixed data outputting circuit to merge predetermined data into the read-out data. This circuit is controlled by a control circuit in response to a merge control signal.

Another significant patent is the process for producing ROM. In this process, MISFETs are initially formed in depletion mode. Selected MISFETs are then transitioned into enhancement mode or weak depletion mode to write desired data into the memory cells of a read-only memory. This change is achieved by introducing an impurity into the channel regions of the selected MISFETs after the formation of the gate electrodes.

Career Highlights

Shibata has worked with prominent companies in the semiconductor industry, including Hitachi, Ltd. and Hitachi VLSI Engineering Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in semiconductor technology.

Collaborations

Throughout his career, Shibata has collaborated with esteemed colleagues such as Isamu Kobayashi and Youichi Matsumoto. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Ryuuji Shibata'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 devices and manufacturing processes.