Company Filing History:
Years Active: 2020-2021
Title: Tetsuya Shirasu: Innovator in Semiconductor Technology
Introduction
Tetsuya Shirasu is a prominent inventor based in Yokkaichi, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of advanced memory chips. With a total of two patents to his name, Shirasu's work is recognized for its innovative approach to optimizing performance and minimizing stress in semiconductor devices.
Latest Patents
Shirasu's latest patents include a bonded structure that features a performance-optimized support chip and a stress-optimized three-dimensional memory chip. This bonded assembly consists of a memory die that includes a three-dimensional memory array located on a first single crystalline semiconductor substrate. Additionally, it incorporates a logic die with peripheral circuitry located on a second single crystalline semiconductor substrate, which is bonded to the memory die. The three-dimensional memory array is designed with word lines and bit lines, while the logic die contains field effect transistors with semiconductor channels configured to flow electrical current along a channel direction parallel to the bit lines or word lines. The invention utilizes different crystallographic orientations for the two substrates, selecting orientations for the first substrate to minimize stress deformation of the memory chip and for the second substrate to maximize the performance of the peripheral circuitry.
Career Highlights
Tetsuya Shirasu is currently employed at Sandisk Technologies Inc., where he continues to push the boundaries of semiconductor innovation. His work has been instrumental in advancing the capabilities of memory technology, making significant impacts in the industry.
Collaborations
Shirasu has collaborated with notable colleagues, including Naohiro Hosoda and Kazuma Shimamoto. Their combined expertise has contributed to the successful development of cutting-edge technologies in the semiconductor field.
Conclusion
Tetsuya Shirasu stands out as a key figure in semiconductor innovation, with his patents reflecting a deep understanding of material science and engineering principles. His contributions continue to shape the future of memory technology.