Dai Nippon Printing Co., Ltd.

Ryoma Yasui

Takeshi Sakamoto

Ryutaro Harada

Tatsuji Nakajima

Shuichi Tamura

Akihito Haruki

Shota Yamanishi

Provided is a barrier film that can suppress a change in color when applied to a wavelength conversion sheet. A barrier film for a wavelength conversion sheet, comprising an inorganic oxide layer A, an organic coating layer B, an inorganic oxide layer C, and a primer layer D in presented order on a light-transmitting base material, wherein thicknesses of the light-transmitting base material, the inorganic oxide layer A, the organic coating layer B, the inorganic oxide layer C, and the primer layer D are defined as t, t, t, t, and t, respectively; tis 150 nm or more and 500 nm or less; and t/tis 0.55 or more and 1.65 or less.

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Nagareyama, Japan

Ryoma Yasui