Qiang Guo

Title: Innovations of Qiang Guo in Semiconductor Technology

Introduction

Qiang Guo is a prominent inventor based in Singapore, known for his significant contributions to semiconductor technology. With a total of 4 patents, he has made strides in improving the performance and reliability of semiconductor devices.

Latest Patents

One of his latest patents focuses on electromigration improvement by changing the via bottom geometric profile. This integration approach aims to enhance electromigration resistance in semiconductor devices. The patent describes a via hole formed in a stack that includes an upper dielectric layer, a middle TiN ARC, and a lower first metal layer, which is filled with a conformal diffusion barrier layer and a second metal layer. A key feature of this invention is the ability to select the etch process to vary the shape and location of the via bottom. A round or partially rounded bottom is created in the first metal layer to reduce mechanical stress near the diffusion barrier layer. Conversely, a flat bottom is chosen when the exposure of the first metal layer to subsequent processing steps is a primary concern. The findings indicate that the electromigration resistance is lower for a via structure with a flat bottom formed in the first metal layer compared to other configurations.

Career Highlights

Qiang Guo has worked with notable organizations, including Chartered Semiconductor Manufacturing Ltd and the Agency for Science, Technology and Research. His experience in these companies has allowed him to develop and refine his innovative ideas in semiconductor technology.

Collaborations

Throughout his career, Qiang Guo has collaborated with esteemed colleagues such as Chun Hui Low and Hong Lim Lee. These partnerships have contributed to the advancement of his research and inventions.

Conclusion

Qiang Guo's work in semiconductor technology showcases his innovative spirit and dedication to improving device performance. His patents reflect a deep understanding of electromigration challenges and solutions in the industry.