Sheng Mei Zheng

Title: Innovations by Sheng Mei Zheng in Vertical LED Structures

Introduction

Sheng Mei Zheng is an accomplished inventor based in Shenzhen, China. He has made significant contributions to the field of vertical LED structures, particularly through his innovative patent that enhances the efficiency and cost-effectiveness of LED production.

Latest Patents

Sheng Mei Zheng holds a patent titled "Optimization of Polishing Stop Design." This invention provides a method for fabricating vertical LED structures by removing the substrate used for epitaxial layer growth through polishing. The technique employs chemical mechanical polishing with polish stops to achieve a sufficiently level plane. The polish stops are integrated into the multilayer structure before the polishing process, ensuring that the hardness of the polish stop material exceeds that of the material to be removed. This innovation allows for the production of vertical GaN LEDs at a lower cost and with a higher yield compared to traditional methods such as laser lift-off or conventional polishing. The polish stops can be removed using saw dicing, laser dicing, or plasma etching.

Career Highlights

Sheng Mei Zheng is affiliated with the Hong Kong Applied Science and Technology Research Institute, where he continues to advance research in LED technology. His work has been instrumental in improving the manufacturing processes of vertical LEDs, contributing to the overall efficiency of the industry.

Collaborations

Sheng Mei Zheng collaborates with notable colleagues, including Ka Wah Chan and Yong Cai, who contribute to the research and development efforts in their field.

Conclusion

Sheng Mei Zheng's innovative approach to vertical LED structures exemplifies the potential for advancements in LED technology. His patent not only enhances production efficiency but also reduces costs, marking a significant step forward in the industry.