Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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Development of Intermittent Coating Process Using Roll-to-roll Slot-die Coater

롤투롤 슬롯 다이 코터를 이용한 간헐 코팅 공정 개발

  • Mose Jung (School of Electrical, Electronic & Communication Engineering, Korea University of Technology and Education) ;
  • Gieun Kim (School of Electrical, Electronic & Communication Engineering, Korea University of Technology and Education) ;
  • Jeongpil Na (School of Electrical, Electronic & Communication Engineering, Korea University of Technology and Education) ;
  • Jongwoon Park (School of Electrical, Electronic & Communication Engineering, Korea University of Technology and Education)
  • 정모세 (한국기술교육대학교 전기.전자.통신공학부) ;
  • 김기은 (한국기술교육대학교 전기.전자.통신공학부) ;
  • 나정필 (한국기술교육대학교 전기.전자.통신공학부) ;
  • 박종운 (한국기술교육대학교 전기.전자.통신공학부)
  • Received : 2023.11.07
  • Accepted : 2023.12.12
  • Published : 2023.12.31
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Abstract

For the potential applications in large-area OLED lightings, hydrogen fuel cells, and secondary batteries, we have performed an intermittent coating of high-viscosity polydimethylsiloxane using roll-to-roll slot die coater. During intermittent coating, dead zones inevitably appear where the thickness of PDMS patch films becomes non-uniform, especially at the leading/trailing edge. To reduce it, we have coated the PDMS patches by varying the process parameters such as the installation angle of the slot die head, coating speed, and patch interval. It is observed that the PDMS solution flows down and thus the thickness profile is non-uniform for horizonal intermittent coating, whereas the PDMS solution remaining on the head lip causes an increase in the PDMS thickness at the leading/trailing edges for vertical intermittent coating when the coating velocity is low. As the coating speed increases, however, the dead zone is shown to be reduced. It is addressed that the overall dead zone (the dead zone at the leading edge + the dead zone at the trailing edge) is smaller with horizontal intermittent coating than with vertical intermittent coating.

Keywords

Acknowledgement

이 논문은 2023년도 한국기술교육대학교 교수 교육연구진흥과제 지원에 의하여 연구되었으며 또한 본 과제(결과물)는 2023년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 지자체-대학 협력기반 지역혁신 사업의 결과입니다(2021RIS-004).

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