A display device comprising: a display that displays an image; and a polymer film disposed on the display, wherein the polymer film comprises a binder and metal oxide particles, the binder comprises a first polymer component and a second polymer component, the first polymer component and the second polymer component are miscible with each other, the metal oxide particles are unevenly distributed in a thickness direction of the polymer film with a relatively greater concentration of the metal oxide particles being located toward at least one of a surface portion of the polymer film and an other surface portion of the polymer film that is opposite the surface portion in the thickness direction, the first polymer component is hydrophilic, the second polymer component is hydrophobic relative to the first polymer component, a proportion of the first polymer component gradually decreases from the surface portion to the other surface portion, and the surface portion is a portion of the polymer film located closest to the display, and wherein the metal oxide particles are unevenly distributed with a greater concentration toward the other surface portion, wherein the binder is a product of photopolymerization of: a first component that constitutes the first polymer component and is at least one of a monomer and an oligomer, wherein the monomer and the oligomer each comprise at least one photopolymerizable functional group in one molecule; and a second component that constitutes the second polymer component and is a monomer comprising at least two photopolymerizable functional groups in one molecule, wherein an amount of the first component is in a range of 20 parts by weight to 90 parts by weight based on 100 parts by weight of a total weight of the polymer film, an amount of the second component is in a range of about 5 parts to about 90 parts by weight based on 100 parts by weight of the total weight of the polymer film, and an amount of the metal oxide particles is in a range of about 0.1 parts to about 10 parts by weight based on 100 parts by weight of the total weight of the polymer film, the display device being characterised in that the monomer and the oligomer of the first polymer component each comprise an acrylamide skeleton. a display that displays an image; and a polymer film disposed on the display, wherein the polymer film comprises a binder and metal oxide particles, the binder comprises a first polymer component and a second polymer component, the first polymer component and the second polymer component are miscible with each other, the metal oxide particles are unevenly distributed in a thickness direction of the polymer film with a relatively greater concentration of the metal oxide particles being located toward at least one of a surface portion of the polymer film and an other surface portion of the polymer film that is opposite the surface portion in the thickness direction, the first polymer component is hydrophilic, the second polymer component is hydrophobic relative to the first polymer component, a proportion of the first polymer component gradually decreases from the surface portion to the other surface portion, and the surface portion is a portion of the polymer film located closest to the display, and wherein the metal oxide particles are unevenly distributed with a greater concentration toward the other surface portion, wherein the binder is a product of photopolymerization of: a first component that constitutes the first polymer component and is at least one of a monomer and an oligomer, wherein the monomer and the oligomer each comprise at least one photopolymerizable functional group in one molecule; and a second component that constitutes the second polymer component and is a monomer comprising at least two photopolymerizable functional groups in one molecule, wherein an amount of the first component is in a range of 20 parts by weight to 90 parts by weight based on 100 parts by weight of a total weight of the polymer film, an amount of the second component is in a range of about 5 parts to about 90 parts by weight based on 100 parts by weight of the total weight of the polymer film, and an amount of the metal oxide particles is in a range of about 0.1 parts to about 10 parts by weight based on 100 parts by weight of the total weight of the polymer film, the display device being characterised in that the monomer and the oligomer of the first polymer component each comprise an acrylamide skeleton. a first component that constitutes the first polymer component and is at least one of a monomer and an oligomer, wherein the monomer and the oligomer each comprise at least one photopolymerizable functional group in one molecule; and a second component that constitutes the second polymer component and is a monomer comprising at least two photopolymerizable functional groups in one molecule, wherein an amount of the first component is in a range of 20 parts by weight to 90 parts by weight based on 100 parts by weight of a total weight of the polymer film, an amount of the second component is in a range of about 5 parts to about 90 parts by weight based on 100 parts by weight of the total weight of the polymer film, and an amount of the metal oxide particles is in a range of about 0.1 parts to about 10 parts by weight based on 100 parts by weight of the total weight of the polymer film, the display device being characterised in that the monomer and the oligomer of the first polymer component each comprise an acrylamide skeleton.