Changqing Hu

Title: Changqing Hu: Innovator in Pattern Grouping and Film-Growth Modeling

Introduction

Changqing Hu is a notable inventor based in Sunnyvale, CA. He holds a total of 4 patents that showcase his expertise in advanced technologies. His work primarily focuses on methods and systems for image processing and fabrication processes.

Latest Patents

One of his latest patents is titled "Fast and fuzzy pattern grouping." This invention provides methods and systems for determining information for a specimen. The system includes a computer subsystem designed to remove patterns in a specimen image that do not touch a detected defect, thereby generating a modified specimen image. Additionally, the subsystem generates hash codes for the modified image and assigns it to groups based on the distance between hash codes.

Another significant patent is "Film-growth model using level sets." This technique determines a set of surface profiles in a multilayer stack during fabrication. It utilizes a model of the fabrication process and the geometry of the multilayer stack. The model is based on a generalized Eikonal equation, allowing for the simulation of deposition or growth of the multilayer stack. This innovation can help determine acceptance conditions for multilayer stacks used in photolithography.

Career Highlights

Changqing Hu has worked with prominent companies such as Synopsys, Inc. and Luminescent Technologies, Inc. His experience in these organizations has contributed to his development as an inventor and innovator in his field.

Collaborations

Some of his notable coworkers include Tatung Chow and Donghwan Son. Their collaboration has likely fostered an environment of innovation and creativity in their respective projects.

Conclusion

Changqing Hu's contributions to the fields of pattern grouping and film-growth modeling highlight his innovative spirit and technical expertise. His patents reflect significant advancements that can impact various industries.