Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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Cost-efficient Fabrication of Colorless and Optically Transparent Polyimide Film for Flexible Displays

비용 효율적인 유연 디스플레이용 무색 투명 폴리이미드 필름 제작

  • Dawoon Jo (Department of Mechanical Engineering, Kumoh National Institute of Technology (KIT)) ;
  • Ji-Ho Kim (Department of Mechanical System Engineering, KIT) ;
  • Chung-Seog Oh (Department of Mechanical System Engineering, KIT)
  • 조다운 (금오공과대학교 기계공학과) ;
  • 김지호 (금오공과대학교 기계시스템공학과) ;
  • 오충석 (금오공과대학교 기계시스템공학과)
  • Received : 2023.02.21
  • Accepted : 2023.03.20
  • Published : 2023.03.31
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Abstract

As the demand for large flexible displays such as tablet computers continues to rise, there is an increasing need for cost-efficient colorless and optically transparent polyimide film that can meet the desired performance, particularly optical transmittance. In this study, we investigated a detailed procedure for achieving optimal optical transmittance using two different combinations of monomers: 6FDA+BAPB and 6FDA+BPA+TFDB. We employed a design of experiment method to systematically synthesize polymers, allowing for the optimization of optical transmittance. In addition, we were able to achieve uniform thickness in the films by using a doctor blade. By comparing the price and optical transmittance of four different monomer combinations, we obtained fundamental data on the production of polyimide films that can be customized to meet the specific price and performance requirements of manufacturers. This approach enables users to select the most suitable polyimide film based on their desired price and performance parameters while achieving optimal optical transmittance.

Keywords

Acknowledgement

이 연구는 금오공과대학교 학술연구비로 지원되었음 (202001380001).

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