OPTICAL SHEET FOR CONDENSING LIGHT

摘要

PURPOSE: A condensing type optical sheet is provided to prevent degradation of property of matter and appearance change due to the curl phenomenon and wrinkle even temperature change of light source or temperature change of surrounding environment happens on the back light unit(BLU). CONSTITUTION: The structural layer(10) is contiguous to one side of the base material layer(20), a plurality of cubic structures are arranged. The bottom layer(30) is contiguous to the other side of the base material layer and includes the binder resin and a plurality of beads. The bottom layer includes bead the beads of 10~ 300 parts by weight about the binder resin of 100 parts by weight.