Charles J Varker

Title: **Innovator Spotlight: Charles J. Varker**

Introduction

Charles J. Varker, a prominent inventor located in Scottsdale, AZ, has contributed significantly to the field of semiconductor devices through his inventive work. With a total of 10 patents to his name, Varker's innovations focus on improving interconnect structures and controlling electromigration in electronic circuits.

Latest Patents

Varker's most recent patents showcase his expertise in semiconductor technology. His first approach involves an interconnect structure that reduces peak localized interconnect current density by effectively distributing current flow around the perimeter of an interlevel connector in a semiconductor device. This innovation features a first interconnect level connected to a second by an interlevel connector, with strategically placed fingers that help divide current flow. In his second approach, Varker introduces an interconnect level composed of polycrystalline material, connecting two points in a semiconductor device using slender branches. His third patent discloses an interconnect run designed as a chain consisting of several upper and lower straps, ensuring optimal connections between points within the device.

Additionally, Varker has developed a method for controlling electromigration through an electrically conductive interconnect structure. This innovation incorporates a groove adjacent to the conductive interconnect, which is patterned from a conductive material with specific grain microstructures. By controlling polycrystalline and single-grain segment lengths, this structure effectively reduces the risk of electromigration.

Career Highlights

Charles J. Varker has made substantial contributions while working at Motorola Corporation, where he has honed his skills in semiconductor technology and innovation. His focus on interconnect structures has helped to advance the reliability and performance of electronic devices.

Collaborations

Throughout his career, Varker has had the opportunity to collaborate with notable colleagues such as Syd R. Wilson and Richard B. Gregory. Their efforts together have fostered creativity and a culture of innovation within the workplace.

Conclusion

Charles J. Varker stands out as a key figure in the realm of semiconductor inventions. His impressive array of patents and contributions to the field demonstrates his dedication to enhancing technology in significant ways. With ongoing innovation, Varker continues to shape the future of electronic circuits and devices.