Location History:
- Higashinihonbashi, Chuo, Tokyo, JA (1977)
- Hyogo, JP (1995)
- Yokohama, JP (2007)
- Kanagawa-ken, JP (2010)
- Tokyo, JP (1995 - 2014)
Company Filing History:
10 out of 21,351 
5 out of 1,458 
4 out of 52,752 
Years Active: 1977-2014
Title: Innovations of Junji Yamada in Semiconductor Technologies
Introduction
Junji Yamada, a prolific inventor based in Tokyo, Japan, holds an impressive portfolio of 24 patents, primarily focused on advancements in semiconductor technologies. His work demonstrates a strong commitment to enhancing the efficiency and functionality of semiconductor devices, paving the way for innovations in the electronics industry.
Latest Patents
Among his latest inventions are two notable patents. The first is a "Resin sealed semiconductor device and manufacturing method therefor." This invention involves a semiconductor device that includes a thermoplastic resin case, housing a semiconductor chip mounted within. It features a metal terminal with a wire bonding surface that connects to the chip, ensuring robust and efficient operation. The innovation lies in the thermoplastic bond formed between the contact surface of the metal terminal and the inside of the resin case, enhancing the device's stability and performance.
The second patent addresses a "Stacked type semiconductor memory device and chip selection circuit." This invention involves a structure that allows multiple semiconductor chips to be stacked while enabling individual chips to be selected through unique identification numbers. It comprises operation circuits connected in cascade order to output these identification numbers and comparison circuits to detect matches with the chip selection address. This design significantly improves the functionality of memory devices, making them more versatile and efficient.
Career Highlights
Junji Yamada's impressive career includes significant tenures at notable companies such as Mitsubishi Electric Corporation and Elpida Memory, Inc. His roles in these organizations allowed him to develop pioneering technologies and contribute to the field of semiconductor manufacturing.
Collaborations
Throughout his career, Yamada has collaborated with remarkable professionals, including Seiji Saiki and Hiroaki Ikeda. These partnerships have strengthened the innovation ecosystem surrounding his work and contributed to the development of cutting-edge semiconductor technologies.
Conclusion
Junji Yamada's contributions to semiconductor technology through his numerous patents reflect his expertise and dedication to innovation. His work not only advances the capabilities of semiconductor devices but also enhances the overall efficiency of electronic products in today's technology-driven world. As the industry continues to evolve, the impact of his inventions will undoubtedly resonate for years to come.