Viewing angle compensation film, polarizing plate comprising same, and display device comprising same

    公开(公告)号:US11686967B2

    公开(公告)日:2023-06-27

    申请号:US16757741

    申请日:2019-02-27

    申请人: LG CHEM, LTD.

    IPC分类号: G02F1/1335

    CPC分类号: G02F1/133502 G02F1/133528

    摘要: The present specification relates to a viewing angle compensation film, a polarizing plate including the same, and a display device including the same, and the viewing angle compensation film includes: a pattern layer; and a low refractive layer, in which a difference in refractive index between the pattern layer and the low refractive layer is 0.02 to 0.4, the pattern layer includes: a first surface which comprises a flat surface; and a second surface which faces the first surface and includes multiple protruding portions, each of the protruding portions includes a first inclined surface and a second inclined surface, an angle θ1 between the first surface and the first inclined surface or a surface extending from the first inclined surface and an angle θ2 between the first surface and the second inclined surface or a surface extending from the second inclined surface are different from each other, and an angle θ between the first inclined surface or the surface extending from the first inclined surface and the second inclined surface or the surface extending from the second inclined surface is 20° to 60°, such that there is an effect of improving a contrast ratio and a viewing angle.