James A Alexander

Title: Innovations by James A. Alexander

Introduction

James A. Alexander is a notable inventor based in Tempe, AZ (US). He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work focuses on improving processes and systems that enhance the efficiency and effectiveness of semiconductor handling and processing.

Latest Patents

Among his latest patents, Alexander has developed a substrate reactor with adjustable injectors for mixing gases within a reaction chamber. This invention includes methods and apparatuses for separately injecting gases into a reactor for a substrate processing system. The flow profiles of the gases are controlled with two or more sets of adjustable gas flow injectors. These methods are particularly useful for selective deposition of gases in a CVD system using volatile combinations of precursors and etchants. The gases are provided along separate flow paths that intersect in a relatively open reaction space, rather than in more confined upstream locations.

Another significant patent is for a semiconductor handling robot with an improved paddle-type end effector. This robotic semiconductor handling system includes two robot arms for transferring substrates between processing, cooling, and storage stations. The first robot arm has a paddle-type end effector adapted to support one substrate at a primary location as well as a second substrate at a secondary staging location. The second robot arm is a Bernoulli-style wand that transfers a substrate from the primary location to the secondary one, and transfers substrates from either location to the process chamber. The use of the dual-location paddle allows for a significant reduction in cycle time over a single paddle location and a Bernoulli wand system.

Career Highlights

James A. Alexander is currently employed at Asm America, Inc., where he continues to innovate and develop new technologies in the semiconductor industry. His work has been instrumental in advancing the capabilities of semiconductor processing systems.

Collaborations

Some of his notable coworkers include Eric R. Wood and Richard Crabb, who have collaborated with him on various projects and innovations.

Conclusion

James A. Alexander's contributions to semiconductor technology through his patents and innovations have significantly impacted the industry. His work continues to pave the way for advancements in semiconductor processing and handling systems.