Phosphor-containing film and backlight unit

A phosphor-containing film comprising:

• a phosphor-containing layer having a resin layer which has impermeability to oxygen and is provided with a plurality of discretely arranged concave portions, and a plurality of fluorescent regions, each of which is arranged in the concave portion formed in the resin layer;
• and
• a first substrate film laminated on one main surface of the phosphor-containing layer and a second substrate film laminated on the other main surface of the phosphor-containing layer,
• wherein the fluorescent regions contain the phosphor that deteriorates through a reaction with oxygen in the case of being exposed to oxygen, and a binder,
• the first substrate film includes a support film, and an inorganic layer provided on a surface of the support film on a side facing the phosphor-containing layer,
• the resin layer has a modulus of elasticity of 0.5 to 10 GPa, and
• a thickness of a bottom of the concave portion of the resin layer is 0.1 to 20 μm, and
• in the phosphor-containing layer, the fluorescent region is surrounded by the resin layer and a cut fluorescent region including a phosphor which has deteriorated through a reaction with oxygen by exposure to oxygen.