반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

슬롯 다이 코팅을 이용한 광 확산 입자 기반 Anti-Moiré Filter 제작

Fabrication of Anti-moiré Filter with Light Diffusing Particles Using Slot-die Coating

  • 홍송은 (한국기술교육대학교 전기.전자.통신공학과) ;
  • 전경준 (한국기술교육대학교 전기.전자.통신공학과) ;
  • 신영균 (한국기술교육대학교 전기.전자.통신공학과) ;
  • 박종운 (한국기술교육대학교 전기.전자.통신공학과)
  • Hong, Songeun (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education) ;
  • Jeon, Kyungjun (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education) ;
  • Shin, Youngkyun (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education) ;
  • Park, Jongwoon (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education)
  • 투고 : 2022.11.02
  • 심사 : 2022.12.12
  • 발행 : 2022.12.31
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초록

With an attempt to suppress the moiré phenomenon caused by the interference between the black matrix of a display panel and the metal grid of a camera, we have fabricated an anti-moiré filter using light diffusing particles (LDPs) with the average diameter of 20 ㎛. It is demonstrated that the anti-moiré filter coated on a glass substrate (370 mm × 470 mm) using a table slot-die coater reduces the moiré intensity to a great extent when the area covered by LDPs is 50%. To quantify the intensity of moiré phenomenon, we have measured the lightness ratio and found that it is reduced from 132.12 down to 105.71 by the filter. To find the optimum area covered by LDPs, we have performed ray tracing simulations using Mie scatters as a substitute for LDPs. From the simulated irradiation distribution, we have calculated the standard deviation (SD) and contrast ratio (CR) to evaluate the moiré strength. As expected, the SD and CR values decrease with increasing covered area by LDPs. However, there exists a trade-off between the transmittance of the filter and its capability of reducing the moiré intensity in determining the area covered by LDPs.

키워드

과제정보

이 결과물은 2022년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 지자체-대학 협력기반 지역 혁신 사업의 결과입니다. (2021RIS-004)

참고문헌

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