OPTICAL SHEET, BACK LIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING THE SAME

摘要

PURPOSE: An optical sheet, back light unit and liquid crystal display device comprising the same are provided to obtain the distribution of the uniform luminance by forming the protrusion including a plurality of spreading particles on the top of material. CONSTITUTION: The reflection-type polarizing film(110) transmits the light which is incident from the light source. The reflection-type polarizing film reflects the light which is incident from the light source. The reflection-type polarizing film comprises the first layer(111) including polymer and the second level(112) adjacent to the first layer. The second level comprises the refractive index and the polymer having the other refractive index of the first layer. The material(120) is for the role of transmitting the light which is incident from the light source. The materials has the thickness of 1000μm to 10. The protrusion(130) is located on the top of the materials. The protrusion is proceed the role of condensing the light..