Light absorbing body-containing film and backlight unit

A light absorbing material-containing film comprising:

• a light absorbing material-containing layer that has a plurality of cylindrical or polygonal prism-shaped resin portions discretely disposed and a light absorption region contain light absorbing bodies and formed between the plurality of resin portions;
• a first substrate film that is laminated on one main surface of the light absorbing material-containing layer;
• and
• a second substrate film that is laminated on the other main surface of the light absorbing material-containing layer,
• wherein the light absorption region contains at least one phosphor that serves as the light absorbing body, and a binder,
• the resin layer has a Young's modulus of 0.5 to 10 GPa, and
• an in-plane tint distribution of the light absorbing material-containing film satisfies Formula (1),
• 0.002<ymax−ymin<0.2 Formula (1)
• where ymax and ymin respectively represent a maximum value and a minimum value of a CIE y value in a measurement of an in-plane tint of the light absorbing material-containing film.