The Effects of Injection Molding Conditions on Uniformity and Brightness of Light Guide Plate

도광판의 균일도 및 휘도에 사출성형조건이 미치는 영향

  • Lee Sung-Hee (Korea Institute of Industrial Technology) ;
  • Kim S.W. (Minsung Precision Co., Ltd.) ;
  • Lee H.S. (Minsung Precision Co., Ltd.) ;
  • Kim J.D. (Korea Institute of Industrial Technology)
  • Published : 2005.06.01


The effects of injection molding conditions on the uniformity and brightness of light guide plate(LGP) with micro-patterns were investigated in the present study. An injection molding system for stampers with mirco-pattern was designed and manufactured to perform experiment. Variations of injection molding speed, mold and melt temperature for LGP were considered in this work. Also, injection molding characteristics of LGP were investigated by numerical analysis using plastic injection molding commercial code. It was shown that injection molding conditions such as injection speed, melt temperature and mold temperature can have an effect on the uniformity and brightness of light guide plate.