From chemical engineering to "Police in Micron Fab"
When I joined micron, I was new to semiconductor field which mean I have no background for how wafer is being process. Luckily, Micron does provide comprehensive training here. New hires will be provided one month new hired training. We went through the Micron background, the structure for the wafers, the software that we were going to use, fab visiting to see how is wafer being process.
During on job training, I was being assigned with a mentor to assist on my learning process. My supervisor would constantly make sure I have access to resources and equipment to help my work. Completing new hired training is not the end for the learning. My supervisor will always go through with me my performance for the last month and provide me feedback so that I can have continuous learning. There are also various platform and resources available, like micron university, knowledge library, elearning… which allow to continue to build my skillsets. Learning to learn, learning all the time. Through all the trainings and guidance from my supervisors, mentor and peers, strong support system, I grow and become confident with the task that assigned to me.
I love the culture in Micron where everyone will work as a team. The hierarchy in micron is very flat where we can ask our manager, senior manager, director, open for question, we can go to them and ask question. When I face problem, my colleagues and peers are willing to spent their time to teach me and encourage me when I feel lost. My team, laugh, people inspired me to work and develop myself.
RDA engineer :Real time defect analysis engineer, Police in the Fab
RDA Stands for Real-Time Defect Analysis. RDA is an inspection group. RDA looks for anything that changes the expected wafer appearance or causes a failure: normally called “defects” in the Fab. RDA finds defects by inspecting at critical points in the process. RDA is considered the first group to see how processes or tools are affecting the wafers. Through defect data collection and analysis, RDA helps other process areas determine the source of defects. RDA is considered “Real-Time” because it provides more immediate feedback than Probe data and final Param data. For Probe and final Param data, we need to wait until the part has completed manufacturing (45-120* days). With RDA inspection step set up between the line, any abnormal process can be detected and immediate action can be taken to fix the issue.
Contributing to world's first 176-Layer 3D flash NAND memory
I feel proud when I told my family and friends for working in micron as I know my job help to contribute to the world technology development.
With the fast pace technology development, within two year working in Micron, I involved in several milestone like transition from Floating Gate (FG) to Replacement Gate (RG) technology, 80 percent cumulative yield in 33 weeks for our World’s First 176-Layer 3D NAND flash memory. This involve great collaboration and early engagement with Technology Development, Manufacturing Central Teams, Procurement Teams and Suppliers. The outstanding teamwork and customer focus across various cross-functional teams to enable early sample deliveries and improving time to market for mNAND and SSD programs,
Learning to learn, learning all the time
No matter where you are and who you are, learning to learn all the time, never feel shame to ask question. Every day I come to work, I am motivated because I know that there are something that I can learn. Graduating from university is never the end of study but it is a new beginning of a new learning cycle.
Stop a line excursion (avoided +35 lots/day suffering 7% Yield impact)
Observed single wafer with abnormal shading. With attentive the detail, this issue had been communicated to the team and sampling was increased. With increased of sampling of the inspection step, another wafer caught with similar shading. Data mining observed this wafer has prior scan and able to trace to a specific loop. With collaboration among team members, we observed strong toggle from a conversion and manage to a stop for that conversion. This conversion later has been identified as a missed process deviation with 3 days of 100% run rate upon stopping. It has avoided additional 35 lots per day suffering 7% yield loss.
