Organic light-emitting display apparatus and method of manufacturing the same
A an organic light-emitting display apparatus, including a first substrate, a display unit having a plurality of organic light-emitting devices that is formed on the first substrate, a second substrate disposed on the display unit, and a filler included between the first substrate and the second substrate. The organic light-emitting device includes a first electrode formed on the first substrate, an intermediate layer that is disposed on the first electrode and includes an organic emission layer, and a porous second electrode disposed on the intermediate layer.
1. An organic light-emitting display apparatus comprising:
a first substrate;
a display unit disposed on the first substrate and comprising organic light-emitting devices;
a second substrate facing the display unit; and
a filler disposed between the first substrate and the second substrate,
wherein:
each of the organic light-emitting devices comprises:
a first electrode disposed on the first substrate;
an intermediate layer disposed on the first electrode and that comprises an organic emission layer;
a porous second electrode disposed on the intermediate layer; and
a porous separation layer comprising an organic material disposed between the porous second electrode and the filler;
a sealant is disposed between the first substrate and the second substrate bonding the first substrate and the second substrate, the sealant surrounding the display unit and the filler and having a predetermined spacing from the display unit;
the filler covers the porous second electrode, a side of the porous separation layer, and a top of the porous separation layer;
the filler is formed so as not to extend beyond the sealant; and
the filler comprises an organic material and the organic material directly contacts the porous separation layer.
2. The organic light-emitting display apparatus of claim 1 , wherein the filler completely fills a space between the display unit and the second substrate.
3. The organic light-emitting display apparatus of claim 2 , wherein the filler covers the display unit and contacts the second substrate.
4. The organic light-emitting display apparatus of claim 1 , wherein the filler comprises silicon, an acryl-based resin, an epoxy-based resin, a urethane-based resin, or mixtures thereof.
5. The organic light-emitting display apparatus of claim 1 , wherein the filler comprises a getter material.
6. The organic light-emitting display apparatus of claim 1 , further comprising a getter disposed between the sealant and the display unit.
7. The organic light-emitting display apparatus of claim 1 , wherein pores of the porous second electrode disperse impurities throughout the porous second electrode, to prevent the localized concentration of the impurities.
8. The organic light-emitting display apparatus of claim 7 , wherein the impurities comprise an outgas generated by the filler.
9. The organic light-emitting display apparatus of claim 1 , wherein the porous second electrode comprises lithium (Li), calcium (Ca), LiF/Ca, LiF/AI, aluminum (Al), silver (Ag), magnesium (Mg), ytterbium (Yb), or combinations thereof.
10. The organic light-emitting display apparatus of claim 1 , wherein a pore diameter of the porous second electrode is about 3 Å.
11. The organic light-emitting display apparatus of claim 1 , wherein a thickness of the porous second electrode is in a range of about 1 Å to about 200 Å.
12. A method of manufacturing an organic light-emitting display apparatus, the method comprising:
forming a display unit on a first substrate;
disposing a filler on the display unit; and
disposing a second substrate on the filler,
wherein:
the forming of the display unit on the first substrate comprises:
forming a first electrode on the first substrate;
forming an organic emission layer on the first electrode; and
forming a porous second electrode on the organic emission layer;
the method further comprises:
forming a porous separation layer comprising an organic material between the porous second electrode and the filler; and
forming a sealant between the first substrate and the second substrate bonding the first substrate and the second substrate, the sealant surrounding the display unit and the filler and having a predetermined spacing from the display unit;
the filler covers the porous second electrode, a side of the porous separation layer, and a top of the porous separation layer;
the filler is formed so as not to extend beyond the sealant; and
the filler comprises an organic material and the organic material directly contacts the porous separation layer.
13. The method of claim 12 , wherein the filler fills a space between the display unit and the second substrate.
14. The method of claim 13 , wherein the filler covers the display unit and contacts the second substrate.
15. The method of claim 12 , wherein the filler comprises silicon, an acryl-based resin, an epoxy-based resin, a urethane-based resin, or a mixture thereof.
16. The method of claim 12 , wherein the filler comprises a getter material.
17. The method of claim 12 , further comprising forming a getter between the sealant and the display unit.
18. The method of claim 12 , wherein pores of the porous second electrode disperse impurities throughout the porous second electrode, to prevent a localized concentration of the impurities.
19. The method of claim 12 , wherein the porous second electrode comprises lithium (Li), calcium (Ca), LiF/Ca, LiF/Al, aluminum (Al), silver (Ag), magnesium (Mg), ytterbium (Yb), or a combination thereof.
20. The method of claim 12 , wherein a pore diameter of the porous second electrode is about 3 Å.
21. The method of claim 12 , wherein a thickness of the porous second electrode is in a range of about 1 Å to about 200 Å.