OPTICAL SHEET STRUCTURE

摘要

Disclosed is an optical sheet structure whereby more than a certain level of robustness can be ensured by maintaining the adhesive force between optical sheets while minimising reduction in the optical characteristics of light passing through. The optical sheet structure comprises: a first optical sheet comprising an upper surface in which an optical structure is formed so as to have an area where the upper end part is at different heights; an adhesive layer which is formed on some of the area of the upper surface of the first optical sheet; and a second optical sheet which is disposed on the adhesive layer. The adhesive layer can be formed in the shape of a plurality of dots, in the shape of a plurality of belts or in the shape of a mesh having open areas so as to allow partial adhesion.