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|1. (WO2016051760) WAVELENGTH CONVERSION MEMBER, BACKLIGHT UNIT PROVIDED WITH SAME, AND LIQUID CRYSTAL DISPLAY DEVICE|
|Title:||WAVELENGTH CONVERSION MEMBER, BACKLIGHT UNIT PROVIDED WITH SAME, AND LIQUID CRYSTAL DISPLAY DEVICE|
[Problem] To provide a wavelength conversion member having a wavelength conversion layer containing quantum dots that emit fluorescent light upon being irradiated by excitation light; wherein light loss is reduced. The present invention provides a high-brightness backlight unit and liquid crystal display device. [Solution] A wavelength conversion member (1D) having a wavelength conversion layer (30) containing quantum dots (30A, 30B), which are excited by excitation light (LB) and emit fluorescent light (LR,LG), wherein the wavelength conversion layer (30) is provided with a substrate film (11, 21) on at least one surface, the substrate film (11, 21) being such that the total light transmittance is less than 92% and the absorption rate for light having a wavelength of 450 nm is less than 0.9% as measured using an integrating sphere.