Company Filing History:
Years Active: 1996-2001
Title: Ralph Edward Cornell: Innovator in Surface Mount Technology
Introduction
Ralph Edward Cornell is a notable inventor based in Kokomo, IN (US). He has made significant contributions to the field of surface mount technology, holding a total of 4 patents. His work focuses on improving the efficiency and reliability of electronic devices through innovative solder bump designs.
Latest Patents
One of Cornell's latest patents is for a solder bump input/output pad for a surface mount circuit device. This invention addresses the challenges associated with attaching surface mount devices, such as flip chips, to conductor patterns using solder bump connections. The design of the input/output pads is tailored to optimize the distribution, shape, and height of the solder bumps after reflow soldering. This innovation not only enhances the stand-off height of the device but also promotes stress relief during thermal cycling, improves mechanical bonding, and facilitates better cleaning and encapsulation processes.
Another significant patent by Cornell is a method for controlling solder bump shape and stand-off height. This method involves using a conductor made of a nonsolderable material, onto which a solderable pillar is formed. The shape of the pillar determines the distribution and height of the solder bumps, providing stress relief during thermal cycles and minimizing bridging between adjacent bumps. This advancement allows for better penetration of cleaning solutions and enhances the bonding and encapsulation between the chip and its substrate.
Career Highlights
Ralph Edward Cornell has spent a considerable part of his career at Delco Electronics Corporation, where he has been instrumental in developing cutting-edge technologies in electronic manufacturing. His innovative approaches have led to advancements that benefit the industry and improve product performance.
Collaborations
Throughout his career, Cornell has collaborated with talented individuals such as William David Higdon and Shing Yeh. These partnerships have fostered a creative environment that has led to the development of impactful technologies in the field.
Conclusion
Ralph Edward Cornell's contributions to surface mount technology through his patents and work at Delco Electronics Corporation highlight his role as a significant innovator in the electronics industry. His inventions continue to influence the design and functionality of modern electronic devices.