Wavelength Conversion Sheet, And Backlight And Liquid Crystal Display Device Using Same

Abstract: Provided is a wavelength conversion sheet capable of suppressing the occurrence of a dark region such as a black line over time. The wavelength conversion sheet, in which a first protective film, a quantum dot-containing layer containing quantum dots, and a second protective film are laminated in this order, has a curled shape in which the outer side thereof is convex when with respect to the quantum dot-containing layer, the direction in which the first protective film is positioned is defined as the inner side and the direction in which the second protective film is positioned is defined as the outer side. The layer configuration of the first protective film and the layer configuration of the second protective film are arranged asymmetrically with respect to the quantum dot-containing layer. The first protective film has a first support and a first barrier layer, the second protective film has a second support and a second barrier layer, the wavelength conversion sheet has at least two layers including a cured product of a curable resin composition, and the layer in contact with the outer side of the first barrier layer and the layer in contact with the outer side of the second barrier layer are layers other than the layer including the cured product of the curable resin composition.

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