Optical film and OLED display having the same

1. An optical film comprising:

a polarizer; and

a protective film on at least one surface of the polarizer,

wherein an in-plane retardation of the protective film is from 0 nm to 300 nm, and a reflectance of the optical film is from 0 to 5%,

wherein a thickness retardation of the protective film is from 100 nm to 2500 nm.

2. The optical film of claim 1 , wherein a thickness of the protective film is from 10 μm to 40 μm.

3. The optical film of claim 1 , wherein the protective film comprises polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or a copolymer thereof.

4. The optical film of claim 3 , wherein the protective film has a triple co-extruded structure comprising PET, PEN, or a copolymer thereof.

5. An organic light-emitting diode (OLED) display comprising:

a display panel comprising an OLED; and

a polarizing plate on at least one surface of the display panel,

wherein the polarizing plate comprises a polarizer and a protective film on at least one surface of the polarizer; wherein an in-plane retardation of the protective film is from 0 nm to 300 nm, and a reflectance of the polarizing plate is from 0 to 5%,

wherein a thickness retardation of the protective film is from 100 nm to 2500 nm.

6. The OLED display of claim 5 , wherein the polarizing plate is arranged on a viewer side of the display panel.

7. The OLED display of claim 5 , wherein a thickness of the protective film is from 10 μm to 40 μm.

8. The OLED display of claim 5 , wherein the protective film comprises PET, PEN, or a copolymer thereof.

9. The OLED display of claim 8 , wherein the protective film has a triple co-extruded structure comprising PET, PEN, or a copolymer thereof.

10. The OLED display of claim 5 , wherein the display panel further comprises:

a base substrate and an encapsulation layer facing each other;

a first electrode and a second electrode, the first electrode and the second electrode being between the base substrate and the encapsulation layer and facing each other; and

an organic light-emitting layer between the first electrode and the second electrode.

11. The OLED display of claim 10 , wherein the display panel further comprises:

at least one of a hole transport layer and a hole injection layer, the at least one of the hole transport layer and the hole injection layer being between the first electrode and the organic light-emitting layer and configured to supply holes from the first electrode to the organic light-emitting layer; and

at least one of an electron transport layer and an electron injection layer, the at least one of the electron transport layer and the electron injection layer being between the second electrode and the organic light-emitting layer and configured to supply electrons from the second electrode to the organic light-emitting layer.

12. A method of fabricating an OLED display, the method comprising:

preparing a display panel including a base substrate and an encapsulation layer facing each other, and an OLED between the base substrate and the encapsulation layer; and

forming a polarizing plate on the encapsulation layer,

wherein the polarizing plate includes a polarizer, and a protective film on at least one surface of the polarizer, and an in-plane retardation of the protective film is from 0 nm to 300 nm, and a reflectance of the polarizing plate is from 0 to 5%, wherein a thickness retardation of the protective film is from 100 nm to 2500 nm.

13. The method of claim 12 , wherein the preparing the display panel comprises:

forming a first electrode on the base substrate;

forming at least one organic light-emitting layer on the first electrode;

forming a second electrode on the organic light-emitting layer; and

forming the encapsulation layer on the second electrode.