Photocurable composition, composite optical film for backlight unit integrating light diffusing sheet and prism sheet, and manufacturing method thereof

摘要

as a compound optical sheet for a backlight unit, a plurality of prism prism patterns are formed parallel to each other on the upper surface sheet, and a backlight unit for a composite optical sheet having a plurality of projections having a light diffusing function formed on the upper layer of the plurality of prism patterns of the prism sheet; The composite optical sheet as the photo-curable composition for the manufacture of a number average molecular weight of from 1000 to 5000 and 1 to 6 (meth) acrylate moiety having a T (meth) acrylate oligomer 60 parts by weight, based on the oligomer 60 parts by weight , molecular weight less than 1000 and 1 to 6 (meth) acrylate moiety having a (meth) acrylate-based monomer 20 to 40 parts by weight, and a photopolymerization initiator composition containing 0.5 to 8 parts by weight; And a method for manufacturing a compound optical sheet using the composition are disclosed. Compound optical sheet for a backlight unit is manufactured using the photo-curable composition according to the present invention improves the productivity of manufacturing the backlight unit through a reduced number of working processes by replacing the conventional prism sheet and a light diffusing sheet by one sheet, and the manufacturing cost reduction can be achieved. ;