YungChieh Fan

Title: YungChieh Fan: Innovator in Semiconductor Technology

Introduction

YungChieh Fan is a prominent inventor based in Shanghai, China, known for his significant contributions to semiconductor technology. With a total of six patents to his name, he has made remarkable advancements in the field, particularly in high voltage bipolar transistors and copper interconnects.

Latest Patents

One of his latest patents is for a high voltage bipolar transistor with pseudo buried layers. This invention features a collector formed by implanting first electric type impurities into the active area, connected with pseudo buried layers on either side. The pseudo buried layers are created by implanting a high dose of first type impurity through the bottoms of shallow trench isolation (STI) at both sides of the active area. This design enhances the depletion region of the collector/base junction from a one-dimensional to a two-dimensional distribution, resulting in increased breakdown voltages while maintaining a low-cost process.

Another notable patent is the algorithm for Cu interconnect dummy inserting. This algorithm divides the surface of a semiconductor chip into several non-overlapping square windows, performing logic operations on each. It determines the metal density and line width for dummy patterns to be inserted, avoiding the shortcomings of fill density maximization in traditional methods. This innovative approach leads to better planarization effects in the copper plating process.

Career Highlights

YungChieh Fan has worked with notable companies such as Shanghai Hua Hong NEC Electronics Company and Shanghai Huali Microelectronics Corporation. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Some of his coworkers include Tzuyin Chiu and TungYuan Chu, who have collaborated with him on various projects, further enhancing the impact of his inventions.

Conclusion

YungChieh Fan's contributions to semiconductor technology through his patents and collaborations highlight his role as an influential inventor in the industry. His work continues to shape advancements in the field, demonstrating the importance of innovation in technology.