Colour conversion film, and back light unit and display device comprising same

A display apparatus comprising a backlight unit comprising a color conversion film, the color conversion film comprising:

• a substrate film;
• and
• a color conversion functional layer provided on the substrate film,
• wherein the color conversion functional layer includes a phase change material;
• and
• the phase change material is a paraffin-based compound, a fatty acid-based compound, an alcohol-based compound, a carbonate-based compound, a polymer, an inorganic salt hydrate, or a combination thereof,
• wherein the color conversion functional layer further includes a thermoplastic resin and a thermocurable resin,
• wherein a content of the phase change material is 50 parts by weight to 95 parts by weight with respect to 100 parts by weight of the total resins, and
• wherein the color conversion film has a thickness of 2 μm to 200 μm.