Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Lateral Position Measurement System for Precision Alignment of Roll-to-Roll Printing Using Alignment Patterns and Quantity of Light

정렬패턴과 광량을 이용한 롤투롤 인쇄전자공정의 횡 방향 웹 위치 측정 시스템

  • Jung, Minkyu (Dept. of Mechanical Engineering, Chungnam Nat'l Univ.) ;
  • Kim, Hyungi (Dept. of Mechanical Engineering, Chungnam Nat'l Univ.) ;
  • Oh, Dongho (Dept. of Mechanical Engineering, Chungnam Nat'l Univ.)
  • 정민규 (충남대학교 공과대학 기계공학과) ;
  • 김현기 (충남대학교 공과대학 기계공학과) ;
  • 오동호 (충남대학교 공과대학 기계공학과)
  • Received : 2015.03.17
  • Accepted : 2015.07.28
  • Published : 2015.09.01
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Abstract

Printed electronics is a technology that produces electronic devices and circuits by printing functional ink on a web, which is a film-like flexible material. This technology is suitable for large-scale and high-speed mass production, and is a next-generation process technology that can fabricate electronic devices from flexible materials. As precise measurement of the positions of the web is required in order to commercialize such a printed electronics process, a measurement system with an optical encoder with a precision of micrometers had been proposed in the preceding research of this study. However, the lateral positions of the web could not be measured in the preceding research as the phenomenon of the entire web being moved in the lateral direction could not be detected. In this study, a measurement system that utilizes the differences in the amount of light reflected from the alignment patterns depending on the web positions in the lateral direction was proposed for measuring the lateral positions of the web. In addition, its reliability was verified and then the effect when measuring printed alignment patterns was analyzed by experiments.

인쇄전자는 필름과 같이 유연한 웹 위에 기능성 잉크를 인쇄하여 전자소자 및 회로를 만들어내는 기술로써, 대면적 및 고속 대량 생산에 적합하며 유연소재의 전자소자를 만들어 낼 수 있는 차세대 공정기술이다. 이러한 롤투롤 인쇄전자 공정의 상용화를 위해서는 웹의 정밀 위치 측정이 요구되므로 본 연구의 선행연구를 통해 수 마이크로미터 측정 정밀도를 가진 광학 측정 시스템을 제안하였다. 하지만 선행연구의 횡 방향 측정은 웹 전체가 횡 방향으로 밀림 현상이 발생한 경우 이를 인지 할 수 없는 한계를 가지고 있다. 본 연구에서는 선행연구의 이송방향 웹 위치 측정 정밀도는 유지하며 웹의 횡 방향 위치에 따라 정렬패턴에서 반사되는 광량 차이를 이용한 웹의 횡 방향 위치 측정 시스템을 제안하였고 신뢰성을 확인하였다.

Keywords

References

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