Jonghyo An

Role: Advanced Process Development for Foldable Display Window Glass Manufacturing

◈ Development of Next-Generation Mass Production Processes (LASER Cutting, Etching, Coating)

• Development of LASER cutting processes for UTG (Ultra-Thin Glass)
• Development of wet etching (healing) processes for UTG
• Development of coating processes for UTG
• Conduct process evaluations, analyze issues during evaluations, implement improvements, and optimize conditions
• Analyze sample morphology using an optical microscope
• Set up processes before mass production transfer
• Maintenance of UTG etching, coating strip, and cleaning development equipment
• Optimization of process conditions for each product

Experience Summary

1) Development of a New UTG LASER Cutting Process

• Duration: March 2024 – February 2025
• Key Responsibilities:Follow-up on process evaluation during new process setup
  Optimization of process conditions
  Analysis and resolution of evaluation issues
• Achievements:Successfully supported new process setup at an overseas plant (Nov 2024 – Feb 2025)
  Achieved a cumulative yield of 90%
  Met reliability specifications
  

2) Development of 18” Large-Area UTG

• Duration: September 2022 – October 2024 (Approx. 25 months)
• Key Responsibilities:Optimization of cleaning and etching process conditions
  Defect analysis and resolution
  Setup of related equipment
  Sample production for large-area UTG manufacturing
• Achievements:Achieved target yield
  Completed setup of cleaning equipment for large-area UTG
  Established a sample production process at the development stage
  

3) Development of LASER Cutting Process for Coated Glass

• Duration: January 2022 – March 2023 (Approx. 14 months)
• Key Responsibilities:Evaluation of glass coating
  Optimization of LASER cutting and strip/etching conditions for coated glass
• Achievements:Established optimal process conditions
  Secured superior product characteristics compared to existing methods
  Applied the process to large-area UTG development
  

4) Development of a New UTG Cutting Technology

• Duration: June 2020 – March 2023 (Approx. 33 months)
• Key Responsibilities:Evaluation of new LASER cutting technology
  Optimization of etching process conditions
  Defect analysis and yield improvement
• Achievements:Achieved target yield
  Successfully set up and transferred the new process to mass production at an overseas plant
  

5) Optimization of UTG LASER Cutting Conditions

• Duration: August 2020 – August 2021 (Approx. 12 months)
• Key Responsibilities:Evaluation of LASER cutting conditions for UTG
• Achievements:Established optimal UTG cutting conditions using IR LASER