Improvement of on-axis luminance by optimization of edge-lit backlight optic

LCD 에지형 백라이트 광학계의 휘도집광 효율 향상에 관한 연구

  • 주병윤 (한국기술교육대학교 기계정보공학부) ;
  • 홍주표 (한국기술교육대학교 디자인공학과)
  • Published : 2009.10.08

Abstract

This paper dealt with the design guide of the conventional edge-lit backlight optic with which the on-axis luminance could be increased by trying to improve the light condensing efficiency of a bright enhancement film (BEF). First, the general design guide concerned with the backlight optic was proposed, and then its validness was experimentally proved by conducting design examples with haze controls of both diffuse film and microdot material printed on the backside of the light guide plate. Experimental results showed that the variation range of the on-axis luminance by the present approach was about $5{\sim}9%$, which would be by no means negligible in the practical application.

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