Effects of different micro-feature structures on warpage and deformation of light guide plate

To study the influence of different micro-feature structures on the warpage and deformation of injection molded light guide plate,We applied MoldFlow MPI5.0 to simulate the influence of five different micro-feature structures(micro V groove structure,micro U protrude structure,micro pyramid structure,micro cirque structure and micro lens structure) on the warpage and deformation of light guide plate with 11 mm×3 mm×0.8 mm dimensions for the first time.The results show that the influence of micro lens array structure on the warpage and deformation of the light guide plate is bigger than that of other microfeature structures,the biggest warpage and deformation of micro lens array light guide plate is 0.039 7 mm,and the influence of micro rings array structure is the smallest one.With the same processing parameters,the warpage and deformation of micro rings array light guide plate is 0.028 2 mm,the difference reaches 40.78%,furthermore the influence of convex micro-feature structures is bigger than concave micro-feature structures at all time.It is shown that we should consider the influence of different designs of micro-feature structures on the injection molding of light guide plate in advance,and the preferences are concave micro-feature structures like micro cirque structure.