Optical film for a display device and method of fabricating the same
View Patent ↗An optical film for a display device including a substrate and a coating layer in which a first material has a first range of surface energy value and a second material has a second range of surface energy value smaller than the first range of surface energy value such that the first material is mainly distributed on a first side of the coating layer contacting the substrate and the second material is mainly distributed on a second side of the coating layer opposite to the first side.
1. An optical film for a display device, comprising:
a substrate; and
a single coating layer in which a first material has a first range of surface energy value and a second material has a second range of surface energy value smaller than the first range of surface energy value such that the first material is mainly distributed on a first side of the coating layer contacting the substrate and the second material is mainly distributed on a second side of the coating layer opposite to the first side,
wherein the second material includes a fluorine-based polymer having —CH 2 CF 3 group.
2. The optical film according to claim 1 , wherein a difference between the first range of surface energy value and the second range of surface energy is in a range of 5 mN/m to 35 mN/m.
3. The optical film according to claim 1 , wherein the first material has a surface energy value in a range of 30 mN/m to 45 mN/m and the second material has a surface energy value in a range of 10 mN/m to 25 mN/m.
4. The optical film according to claim 1 , wherein the substrate is one of a diffusion sheet, polarizer, display screen and a layer of a prism sheet.
5. The optical film according to claim 1 , wherein the first material contains a polymer resin selected from ethyl acrylate polymer, ketyl acrylate polymer, butyl acrylate polymer, and ethyl hexyl acrylate poilymer.
6. The optical film according to claim 1 , wherein the coating layer contains at least one of silica particles, nano-silica particles, conductor particles, and nano-conductor particles.
7. The optical film according to claim 1 , further comprising an other coating layer on the coating layer, wherein the other coating layer includes a polymer resin.
8. The optical film according to claim 7 , wherein the other coating layer further contains at least one of silica particles, nano-silica particles, conductor particles, and nano-conductor particles.
9. The optical film according to claim 1 , wherein the first material contains a hydroxyl (—OH) group.