Tetsuya Chida

Title: Tetsuya Chida: Innovator in Semiconductor Memory Technology

Introduction

Tetsuya Chida is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of semiconductor memory technology, holding a total of 5 patents. His innovative work has paved the way for advancements in nonvolatile memory systems.

Latest Patents

Chida's latest patents include a two-bit semiconductor memory with enhanced carrier trapping. This nonvolatile semiconductor memory features a pair of diffused layers formed in the surface area of a p-type silicon substrate, along with a gate electrode made of polysilicon film and tungsten silicide film. The design incorporates a silicon nitride film at both ends of the gate oxide, enhancing carrier trap characteristics and ensuring reliable recording and storage. This configuration effectively prevents carrier injection outside the ends of the gate oxide, thereby increasing reliability and minimizing write and erase errors.

Another notable patent is a semiconductor memory device that utilizes a page buffer to hold read data from selected memory cells. This device outputs the held data in a specific order, enhancing data security. A password control circuit compares a read password supplied during a read operation with an original password stored in advance. The buffer control circuit alters the order of the read data output based on the comparison result, ensuring that data is protected against unauthorized access.

Career Highlights

Throughout his career, Tetsuya Chida has worked with notable companies, including Fujitsu Corporation and Fujitsu VLSI Limited. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Chida has collaborated with several talented individuals in the field, including Sinsuke Kumakura and Yasushige Ogawa. These collaborations have further enriched his work and contributed to advancements in semiconductor memory technology.

Conclusion

Tetsuya Chida's contributions to semiconductor memory technology are significant and impactful. His innovative patents and career achievements highlight his role as a leading inventor in this field.