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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

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.

Keywords

Printed Electronics;Roll-to-roll Printing;Alignment Patterns;Quantity of Light;Web Position Measurement

References

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