Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Design of LCD Backlight Unit Coupled with Micro Fresnel Lens Array

배열형 소형 프레넬 렌즈가 결합된 LCD 백라이트의 설계

  • 정만호 (청주대학교 IT학부 레이저광정보공학과)
  • Published : 2006.02.28
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Abstract

A light guided plate coupled with the micro Fresnel lens array(MFTA) is designed to improve the efficiency of the LCD backlight unit. Blazed Frenel lens and binary multi-level Fresnel lens are adapted for the MFLA. This type of MFLA can replace the prism sheet and diffuser sheet which are used for the conventional type of the LCD backlight unit. The luminance and uniformity are calculated to verify the performance of the MFLA type LCD backlight unit.

LCD 백라이트의 효율을 향상시키기 위하여 배열형 소형 프레넬 렌즈(micro Fresnel lens array)가 결합된 도광판을 설계하였다. 배열형 소형 프레넬 렌즈(MFLA)는 blazed 형태 및 다단계 이진 형태를 채택하였다. MFLA는 기존 LCD 백라이트 장치에서 필요로 했던 프리즘판 및 확산판을 대체할 수 있다. MFLS가 적용된 도광판의 성능을 나타내기 위하여 휘도와 균일도 값 등을 계산하였다.

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