This inventor holds 3 USPTO granted patents. Top assignee: International Business Machines Corporation. Active years: 1984-1985.
Company Filing History:
Years Active: 1984-1985
Title: Inventor Somnath Bhattacharya: Innovations in Semiconductor Metallurgy
Introduction
Somnath Bhattacharya, an accomplished inventor based in Wappingers Falls, NY, has made significant contributions to the field of semiconductor devices with his innovative patents. With a total of three patents to his name, Bhattacharya has been a key player in advancing titanium metallurgy and its applications in passivated semiconductor devices.
Latest Patents
Bhattacharya's latest patents focus on two groundbreaking inventions in semiconductor technology. The first patent details a method of compressively stressed titanium metallurgy for contacting passivated semiconductor devices. This innovative metallurgy comprises a compressively stressed, oxygen-containing titanium underlayer, which is then covered by a solder-bondable layer. This layer is suitable for various current densities, featuring nickel or ruthenium in lower current scenarios, and a composite structure of copper, titanium, copper, and gold for higher current densities.
The second patent addresses layered metal film structures for LSI chip carriers adapted for solder applications. In this invention, the top surface metallurgy of LSI chip carriers is enhanced by strategically designing multiple and phased interfaces of metal layers. This modification separates the solder bonding metallurgy from the fan-out conductor metallurgy. An intermediate layer of metal, such as chromium or titanium, is introduced to prevent the formation of intermetallic alloys that can be mechanically weak or brittle, thereby enhancing durability through thermal cycling stresses.
Career Highlights
Currently, Somnath Bhattacharya is employed at International Business Machines Corporation (IBM), where he applies his extensive knowledge of metallurgy to semiconductor technologies. His innovative approaches have positioned him as an influential figure within the organization, contributing to the advancement of materials science in electronics.
Collaborations
Throughout his career, Bhattacharya has collaborated with notable colleagues, including Nicholas G. Koopman and Dudley A. Chance. These collaborations have enabled him to further explore advancements in semiconductor device fabrication and enhance the performance stability of circuit components.
Conclusion
With a focus on improving semiconductor metallurgy, Somnath Bhattacharya's inventions signify important strides in the realm of electrical engineering. As he continues to innovate within IBM and beyond, his work will undoubtedly inspire future advancements in semiconductor technology and materials science.