This inventor holds 7 USPTO granted patents. Top assignee: Advanced Micro Devices Corporation. Active years: 2000-2002.
Company Filing History:
Years Active: 2000-2002
Title: Young-Chang Joo: Innovator in Adhesion Strength Testing and Electromigration Reduction
Introduction
Young-Chang Joo is a prominent inventor based in Sunnyvale, CA. He has made significant contributions to the field of materials science, particularly in adhesion strength testing and electromigration reduction in microelectronic devices. With a total of 7 patents to his name, Joo continues to push the boundaries of innovation in his field.
Latest Patents
One of Joo's latest patents focuses on adhesion strength testing using a depth-sensing indentation technique. This innovative method employs a nanoindentation apparatus to measure the adhesion strength of a hard, thin film to a soft substrate. By applying a variably increasing load to the indenter tip, the technique allows for the measurement of critical stress required for delamination and adhesion strength without damaging the thin film.
Another notable patent involves the method of forming copper/copper alloy interconnections with reduced electromigration. This process enhances the reliability of Cu or Cu alloy interconnections by annealing the seed layer before electroplating or electroless plating. By increasing the grain size of the seed layer, Joo's method imparts a (111)-dominant crystallographic orientation, which is crucial for improving the performance of microelectronic devices.
Career Highlights
Young-Chang Joo is currently employed at Advanced Micro Devices Corporation, where he applies his expertise in materials science to develop cutting-edge technologies. His work has been instrumental in advancing the performance and reliability of microelectronic components.
Collaborations
Joo has collaborated with notable colleagues, including Dirk Dewar Brown and Ting Yiu Tsui. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Young-Chang Joo's contributions to adhesion strength testing and electromigration reduction have established him as a leading inventor in the field of materials science. His innovative approaches continue to influence the development of advanced microelectronic devices.