Organic light emitting display device and laser based method of manufacturing the same
View Patent ↗Provided is a method of manufacturing an organic light emitting display device in which a laser beam is used. The method includes forming an organic light emitting unit on a substrate; forming a sealing unit that seals the organic light emitting unit; forming an protective film which is opaque on the sealing unit to protect the organic light emitting unit or the sealing unit by blocking the transmission of the laser beam; forming an optical pattern on the opaque protective film using the laser beam; and forming a transparent film from the opaque protective film by oxidizing the opaque protective film.
1. A method of manufacturing an organic light emitting display device, in which a laser beam is used, the method comprising:
forming an organic light emitting unit on a substrate;
forming a sealing unit that seals the organic light emitting unit;
forming an protective film which is opaque on the sealing unit to protect the organic light emitting unit or the sealing unit by preventing transmission of the laser beam therethrough;
forming an optical pattern on the opaque protective film using the laser beam; and
forming a transparent film from the opaque protective film by oxidizing the opaque protective film.
2. The method of claim 1 , wherein the protective film is formed of a material that is opaque in an oxygen-free atmosphere and is transparent after reacting with oxygen.
3. The method of claim 2 , wherein the protective film is formed of a metal that is opaque in an oxygen-free atmosphere and is transparent after reacting with oxygen.
4. The method of claim 3 , wherein the protective film is formed of Calcium or Lithium.
5. The method of claim 1 , wherein the forming of the protective film comprises forming the protective film in an oxygen-free atmosphere.
6. The method of claim 5 , wherein the forming of the protective film comprises forming the protective film using a deposition method.
7. The method of claim 5 , wherein the forming of the optical pattern comprises forming the optical pattern in an oxygen-free atmosphere.
8. The method of claim 1 , wherein the forming of the optical pattern comprises forming the optical pattern using a laser induced thermal imaging (LITI).
9. The method of claim 1 , wherein the optical pattern is a color filter or a light absorption layer.
10. The method of claim 1 , wherein the forming of the transparent film comprises exposing the protective film to oxygen or to air.
11. The method of claim 1 , wherein the sealing unit comprises at least two layers.
12. The method of claim 11 , wherein the sealing unit has a structure in which an organic layer and an inorganic layer are alternately stacked.