Optical laminates, optical laminates with polarizing thin films, and image display devices

Abstract

The optical laminate provided by the present invention sequentially comprises a first liquid crystal alignment and curing layer, an adhesive sheet, and a second liquid crystal alignment and curing layer; the thickness of the adhesive sheet is less than 20 µm; when the average refractive index of the adhesive sheet is n, the average refractive index of the first liquid crystal alignment and curing layer is n1, and the average refractive index of the second liquid crystal alignment and curing layer is n2, the absolute value of the value calculated by the formula: {(n1+n2) / 2-n} is less than 0.11; the adhesive sheet comprises at least one type selected from the group consisting of monomers and oligomers; and the content of monomers and oligomers in the adhesive sheet is 400~130000 ppm (mass basis). This optical laminate is suitable for improving the display characteristics of image display devices and improving the productivity of the optical laminate.

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