OPTICAL SHEET, BACKLIGHT UNIT USING SAME, AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To allow one optical sheet which has no defect to be reused even when an optical member integrally constituted of two optical sheets has a defect.

SOLUTION: An optical sheet 38 and a diffusion plate 32 are joined by an adhesive layer 60. The adhesive layer 60 includes a transparent film 62, a first adhesive layer 64 having the transparent film 62 provided on a surface facing a first optical sheet 38 (an optical reflection part 48) and a second adhesive layer 66 having the transparent film 62 provided on a surface facing the diffusion plate 32. Adhesive force of an adhesive constituting the first adhesive layer 64 to the first optical sheet 38 is larger than adhesive force of an adhesive constituting the second adhesive layer 66 to the diffusion plate 32.

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