Utilizing photonics for mass production of semiconductors
I started my first career at Micron as a photolithography engineer after working on optical integrated circuits and physical vapor deposition systems during my Ph. In any case, optics is my specialty. In my current job as a photolithography engineer, my main task is to improve yield by utilizing such experience in optics. Specifically, I am surrounded by new experiences every day, such as optimizing overlay regression models and reducing resist defects.
Ramping up DRAM yields from development to manufacturing
My main task is to improve the yield of developed products to enable mass production. In addition to yield, there are many other hurdles to mass production that I am responsible for, such as quality, cost, and safety, but I find all of them challenging. I am particularly interested in improving the overlay accuracy between product layers. We achieve an overlay of 5 nm or less by tuning the exposure machine, optimizing the overlay prediction model, and using big data analysis, etc.
Stay in touch with cutting-edge technology at a state-of-the-art fab
Considered the most expensive machine in the world, lithography equipment is full of new discoveries and excitement every day. I get pleasure in gaining experience not only in optics, but also in statistics, chemistry, metrology, and many other areas!
Always make decisions based on technology
It was always technology that helped me when I faced difficulties at work. Always remember to keep learning new skills and make important decisions based on the technology you have acquired.
Achieved 90% and more yield for new production.
Not only me, but my fab as a whole has achieved very high yields on new DRAM products in a very short period of time. I was involved in the product launch team, mainly in the photolithography department. I actually improved the yield by a few tenths of a percent through better overlay accuracy and defect improvement.
