Junhua Pan

Title: Innovations of Junhua Pan in EUV Lithography

Introduction

Junhua Pan is a notable inventor based in Jiangsu, China. He has made significant contributions to the field of lithography, particularly in the development of reflective optical systems for extreme ultraviolet (EUV) lithography. His innovative work has implications for advanced manufacturing processes in the semiconductor industry.

Latest Patents

Junhua Pan holds a patent for "Reflective optical systems for EUV lithography." This novel projection lithography camera features a large field area and a large numerical aperture. The design comprises only two aspheric mirrors arranged in a two-reflection configuration. These mirrors are aligned on a common axis of symmetry, allowing for the efficient use of extreme ultraviolet radiation. In one preferred embodiment, the system can form a reduced image of a mask on a wafer with feature sizes less than 0.05 µm over a field larger than 22 mm × 22 mm, with a numerical aperture greater than 0.22. This innovative system is particularly suitable for EUV steppers.

Career Highlights

Throughout his career, Junhua Pan has focused on advancing optical systems and lithography technologies. His work has been instrumental in enhancing the capabilities of projection lithography cameras, which are critical for the production of high-resolution semiconductor devices.

Collaborations

Junhua Pan has collaborated with Zhijiang Wang, who is a key coworker in his research endeavors. Their partnership has contributed to the development of cutting-edge technologies in the field of lithography.

Conclusion

Junhua Pan's contributions to EUV lithography through his innovative patent demonstrate his expertise and commitment to advancing technology in the semiconductor industry. His work continues to influence the future of high-resolution manufacturing processes.