Lee Jung Min
Seoul
Summary
I believe that trying to understand the other person's perspective is a fundamental value. During my school days, I often heard my friends say that I seemed to lack empathy. I've had my share of misunderstandings and strained relationships in conversations where my genuine feelings didn't quite come across. At first, I thought being honest was the issue, but I came to understand that being able to see things from the other person's perspective and empathize with their feelings is crucial. A key experience was preparing a presentation for a project that analyzed the root causes of defects in semiconductor devices. The presenter faced difficulties in preparing for the presentation just before the scheduled date. Initially, I thought the preparation was lacking, but upon reviewing the team's project's progress, I realized that we frequently adjusted our direction and data, and since the details were only shared among a few team members with the same role, I think it would have been challenging for the presenter to grasp the overall flow. With the presenter, I reviewed the materials, distilled the key points, and provided feedback to ensure a smooth flow during the presentation practice. As a result, the presenter regained his confidence and was able to deliver a successful presentation. From the perspective of empathy, I've come to believe that truly understanding the other person is the foundation for building a relationship. I believe this attitude will be a significant asset in process engineering roles that require seamless collaboration across departments.
Overview
4
4
years of professional experience
2
2
Certifications
1
1
Language
Work History
part-time job
Banapresso
03.2021 - 02.2025
- Part-time work at a cafe, including food and beverage production, customer service, store cleaning, and supporting other company-owned locations
The University English Conversation Club, UNSC
03.2021 - 12.2021
- The General Affairs Manager is responsible for attending topic selection meetings, procuring necessary items, managing the budget, and maintaining expense records
school work
Blue Winners
03.2021 - 12.2021
- The Department of New Materials Engineering's Small Group coordinates its activities through the establishment of a plan, budget allocation, and settlement, ensuring effective collaboration
Education
Bachelor's Degree - New Material Engineering
Hongik University
02.2024
High School Diploma - natural sciences
Daejin Girls' High School
02.2019
Skills
- Etching
- Photolithography
- Defect analysis
- Synthesis
Measuring
- Semiconductor
- Production tech
- Maintenance
- Collaboration
Teamwork and collaboration
Problem-solving
Certification
2025-01 Envision Lab Wins Top Honors for its Data Analysis Job Skills Enhancement Program
Training
- 2025-05 ~ 2025-08 Let's Educate is a lifelong education center that cultivates core talent in the fields of science and engineering
- K-Digital Training's Convergence Course for Semiconductor Process Engineers focuses on hands-on data analysis, covering front-end and back-end processes, device characteristics, ANKR process simulation, Python, EDA analysis, and low yield, PR pattern, and device specification analysis to identify root causes and develop improvement strategies
- 2025-03 ~ 2025-03 L Campus
- NCS Post Semiconductor Process Training: Overview of Post Semiconductor Process, Packaging Process, Package Testing, and TSV Learning
- 2025-02 ~ 2025-03 L Campus
- NCS semiconductor major course covers the fundamentals of semiconductor devices and the types and principles of eight key semiconductor processes. It also includes analysis of MOSFET structures and an introduction to wafer types
- 2025-01 ~ 2025-03 Nvision Lab
- The course covers semiconductor process technology, including learning device and process parameters, as well as machine learning-based process anomaly detection and classification of defects using Wafer Map and CNN
- 2024-12 ~ 2025-01 Nvision Lab
- Data Analysis Core Competency Development Program: Python and EDA, Statistical Analysis and Visualization, and Manufacturing Data Analysis Project Implementation
- 2024-09 ~ 2024-09 Semiconductor Process Technology Training Institute
- Semiconductor patterning process training, including hands-on experience with cleanroom operations, wafer handling, and dry etching processes
- 2024-09 ~ 2024-09 Korea Career
- Learning 6 Sigma GB statistical tools and 6 Sigma-based quality management methodologies, and implementing DMAIC based sales improvement projects
Growth process and values
I believe that trying to understand the other person's perspective is a fundamental value. During my school days, I often heard my friends say that I seemed to lack empathy. I've had my share of misunderstandings and strained relationships in conversations where my genuine feelings didn't quite come across. At first, I thought being honest was the issue, but I came to understand that being able to see things from the other person's perspective and empathize with their feelings is crucial. A key experience was preparing a presentation for a project that analyzed the root causes of defects in semiconductor devices. The presenter faced difficulties in preparing for the presentation just before the scheduled date. Initially, I thought the preparation was lacking, but upon reviewing the team's project's progress, I realized that we frequently adjusted our direction and data, and since the details were only shared among a few team members with the same role, I think it would have been challenging for the presenter to grasp the overall flow. With the presenter, I reviewed the materials, distilled the key points, and provided feedback to ensure a smooth flow during the presentation practice. As a result, the presenter regained his confidence and was able to deliver a successful presentation. From the perspective of empathy, I've come to believe that truly understanding the other person is the foundation for building a relationship. I believe this attitude will be a significant asset in process engineering roles that require seamless collaboration across departments.
relevant job skills and experience
I believe that a process engineer's core competencies include understanding processes, optimizing conditions, and using data-driven problem-solving skills. Through my undergraduate research, practical training, and education, I have systematically developed these competencies.
[Fair]
During my major, I took courses in semiconductor engineering and semiconductor physics, which gave me a solid foundation in both processes and device fundamentals. Through NCS training, I gained a solid understanding of the entire process flow, from the key processes in the main process to packaging, TSV, and testing in the post-process. At K-Digital Training, I learned the process in a modular format, which helped me identify the relationships between different stages. Through this, we've gained a perspective that views the process as a connected flow, rather than a series of individual steps.
Optimizing the process for [Fair]
As an undergraduate research student, I synthesized ZnMgO/ZnS core-shell nanoparticles with the goal of enhancing the ETL performance of QLED light-emitting devices. We adjusted the precursor ratio and reaction temperature, and measured the luminescence intensity and exciton lifetime. We also validated the formation of the structure and reduction of defects through XRD and PL analysis. By doing so, we achieved a 30% reduction in the luminous intensity decrease and a 1.7 fold increase in exciton lifetime, while also confirming the trade-offs between conditions and gaining a deeper appreciation for the importance of balanced design. In the semiconductor training practice, we analyzed the CD value and etching rate by adjusting the exposure time and CF4/O2 gas ratio, and quantitatively compared the differences under various conditions to determine the optimal conditions. Through this, I've had the opportunity to directly experience the process of ensuring pattern uniformity and target scale fit, which I believe can ultimately lead to process stabilization and yield optimization.
[Data-driven analysis]
The K-Digital Training project analyzed low-yield wafer data using Python-based visualization and statistical analysis, and proposed recommendations for improvement. In particular, the etching process CD distribution analysis was successfully classified with 80% accuracy using Wafer Map and CNN. Through this experience, we've found that data analysis is highly effective in detecting process variations early on and predicting defects. This has given us a solid foundation for identifying defect patterns in the process and linking them to quality stabilization. With our accumulated experience and expertise, we will enhance process precision and minimize variability to drive yield improvement.
Problem-solving experience
Enhancing cooling efficiency and stabilizing experiments through equipment maintenance and upgrades. During my undergraduate research at Hongik University's Applied Nano Materials Research Lab, I was responsible for synthesizing ETL nanoparticles for QLED devices. In experiments conducted under identical conditions, we observed a decrease in reproducibility, with the luminescence properties varying depending on the timing. I inspected the synthesis process, but everything seemed fine, and I suspected that the issue might be with the experimental setup itself. Upon inspecting the aging cooler, we found that the internal filter had become clogged, resulting in irregular coolant flow. At the time, the manual didn't include equipment inspection items, but after consulting with the doctor, who was in charge of maintenance, I disassembled the equipment and cleaned the filter. Replacing the equipment under the same conditions resulted in consistent luminescence properties and significantly enhanced reproducibility. Additionally, the enhanced cooling efficiency has accelerated the reach to set temperature, resulting in a 15% reduction in average process time. This achievement has led to the revision of the experimental manual and the enhancement of equipment management procedures, ultimately contributing to the improved efficiency of subsequent researchers' experiments. Through this experience, I've come to realize that a proactive approach to inspecting and improving not only process conditions but also equipment and environment is crucial for solving problems. Going forward, I aim to become an engineer who can contribute to process stabilization and quality assurance by leveraging this mindset.
a challenging experience
With process improvements, order fulfillment has increased by 25% and revenue has risen. When a problem arises, we take a proactive approach to brainstorm and implement solutions. A notable example is the experience of streamlining work processes at a cafe part-time job, which led to shorter production times and increased sales. During the summer months, a surge in blender drink orders caused repeated bottlenecks, resulting in longer wait times for customers and lost sales. To identify areas for improvement, we broke down the beverage preparation process into distinct stages: ordering, receiving, ingredient preparation, measurement, production, and serving. Our analysis revealed that delays were primarily concentrated in the measurement and production phases. In the past, we would measure out the liquid using a complex blender scale, and then add ice separately at the end. To compensate for this, we've developed a system that uses a simple take-out cup scale to measure and dispense both liquids and ice simultaneously. After verifying the effectiveness through a pilot run, we implemented it as a standard manufacturing process. Following this, manufacturing time was reduced by approximately 30 seconds per cup, and peak-time order fulfillment increased by about 25%, leading to enhanced customer satisfaction and revenue growth. This experience has given me confidence that even a small idea can yield tangible results if it's put into practice and tested. The semiconductor process is also heavily influenced by even slight variations in conditions, which can significantly impact yield and quality. Upon joining the company, we will establish a cycle that identifies the root cause of issues based on process data, verifies the effectiveness through pilot runs, and ultimately standardizes the process to minimize defects and optimize productivity.
Timeline
part-time job
Banapresso
03.2021 - 02.2025
The University English Conversation Club, UNSC
03.2021 - 12.2021
school work
Blue Winners
03.2021 - 12.2021
High School Diploma - natural sciences
Daejin Girls' High School
Bachelor's Degree - New Material Engineering
Hongik University