Optical film and organic light emitting display apparatus comprising the same

An optical film in an organic light emitting display,

• wherein the optical film is formed on a substrate of the organic light emitting display, wherein the substrate is configured to transmit light, emitted from an organic light emission unit of the display, toward the optical film, wherein the optical film is configured to absorb ambient light via a first portion, and wherein the optical film is further configured to transmit light emitted from the organic light emission unit to the environment via a second portion,
• and wherein the optical film further comprises:
• a light absorbing member formed in the first portion and configured to absorb ambient light;
• and
• a plurality of fine structures formed in the second portion and configured to transmit light emitted from the organic light emission unit to the environment, wherein the light absorbing member is interposed between and contacts the fine structures,
• wherein each of the fine structures comprises:
• a first penetration surface formed on a first surface of the optical film, which faces the environment;
• and
• a second penetration surface formed on a second surface facing the substrate;
• wherein the area of the first penetration surface is smaller than the area of the second penetration surface,
• wherein the first and second penetration surfaces are substantially parallel to each other, and
• wherein the organic light emission unit comprises a plurality of organic light emitting devices, and wherein one organic light emitting device corresponds to a plurality of fine structures.

An optical film in an organic light emitting display,

• wherein the optical film is formed on a substrate of the organic light emitting display, wherein the substrate is configured to transmit light, emitted from an organic light emission unit of the display, toward the optical film, wherein the optical film is configured to absorb ambient light via a first portion, and wherein the optical film is further configured to transmit light emitted from the organic light emission unit to the environment via a second portion,
• and wherein the optical film further comprises:
• a light absorbing member formed in the first portion and configured to absorb ambient light;
• and
• a plurality of fine structures formed in the second portion and configured to transmit light emitted from the organic light emission unit to the environment, wherein the light absorbing member is interposed between and contacts the fine structures,
• wherein each of the fine structures comprises:
• a first penetration surface formed on a first surface of the optical film, which faces the environment;
• and
• a second penetration surface formed on a second surface facing the substrate;
• wherein the area of the first penetration surface is smaller than the area of the second penetration surface,
• wherein the first and second penetration surfaces are substantially parallel to each other, and
• wherein the organic light emission unit comprises a plurality of organic light emitting devices, wherein one organic light emitting device corresponds to a plurality of fine structures, and wherein the fine structures are more closely spaced than the organic light emitting devices.

An organic light emitting display comprising:

• a first substrate;
• an organic light emission unit formed over the first substrate and comprising a plurality of organic light emitting devices;
• a second substrate covering the first substrate;
• and
• an optical film formed on the second substrate, wherein the second substrate is configured to transmit light, emitted from the organic light emission unit, toward the optical film,
• wherein the optical film is configured to absorb ambient light via a first portion, and wherein the optical film is further configured to transmit light emitted from the organic light emission unit to the environment via a second portion,
• and wherein the optical film comprises:
• a light absorbing member formed in the first portion and configured to absorb ambient light;
• and
• a plurality of fine structures formed in the second portion and configured to transmit light emitted from the organic light emission unit to the environment, wherein the light absorbing member is interposed between and contacts the fine structures,
• wherein each of the fine structures comprises:
• a first penetration surface formed on a first surface of the optical film, which faces the environment;
• a second penetration surface formed on a second surface facing the second substrate;
• a boundary unit which connects the first penetration surface and the second penetration surface and forms the side of the fine structure;
• a reflection unit disposed on the boundary unit;
• and
• a center unit formed between the first and second penetration surfaces and surrounded by the reflection unit,
• wherein the area of the first penetration surface is smaller than the area of the second penetration surface, and
• wherein the first and second penetration surfaces are substantially parallel to each other.