Ruth A Machell Julianelle

Title: Ruth A Machell Julianelle: Innovator in Wafer Technology

Introduction

Ruth A Machell Julianelle is a notable inventor based in Underhill, Vermont, who has made significant contributions to the field of wafer technology. With a total of 2 patents, her work focuses on improving the efficiency and effectiveness of solder bump deposition processes.

Latest Patents

One of her latest patents involves a shadow mask for depositing solder bumps, which includes additional dummy holes located adjacent to the holes corresponding to most of the perimeter chips of the wafer. This innovative design provides more uniform plasma etching of contacts on the wafer, improves the etching of contacts on perimeter chips, and lowers the contact resistance of these contacts. The extra holes also facilitate the creation of solder bumps outside the perimeter chips, which can support a second shadow mask for the deposition of additional materials, such as tin, on the reflowed solder bumps. This advancement allows for the mounting of chips on a plastic substrate at low temperatures. Furthermore, an improved mask-to-wafer alignment aid is formed from standard solder bumps, which avoids damage to test probes and enhances course alignment.

Career Highlights

Ruth A Machell Julianelle is currently associated with the International Business Machines Corporation, commonly known as IBM. Her work at IBM has allowed her to explore and develop innovative solutions in the semiconductor industry.

Collaborations

Throughout her career, Ruth has collaborated with notable colleagues, including Harry David Cox and David P Daniel. These collaborations have contributed to her success and the advancement of her inventions.

Conclusion

Ruth A Machell Julianelle is a pioneering inventor whose contributions to wafer technology have significantly impacted the industry. Her innovative patents and collaborations reflect her dedication to advancing technology in the field.