OPTICAL SHEET STRUCTURE

摘要

PURPOSE: An optical sheet structure is provided to obtain stable luminance by preventing an adhesive drooping along an inclined surface of a structure pattern and to reduce an amount of the adhesive. CONSTITUTION: A first optical sheet(110) has a triangle cross-sectional first structure pattern(114) in an upper part of a first base unit(112) and configures a lower sheet when laminating with a second optical sheet(120). The second optical sheet has a triangle cross-sectional second structure pattern(124) in an upper part of a second base unit(122) and configures an upper sheet when laminating with the first optical sheet. An adhesion layer(126) having constant thickness is formed in a lower surface of the second base unit.