Organic light emitting display device and fabrication method for the same
View Patent ↗An organic light emitting display device includes a substrate having a pixel region in which at least one organic light emitting diode is formed and a non-pixel region other than the pixel region; and an encapsulation film for encapsulating the substrate. Here, the encapsulation film is made of by laminating at least one organic film and at least inorganic film and a desiccant formed in at least one of the organic film and the inorganic film corresponding to the non-pixel region of the substrate.
1. An organic light emitting display device, comprising:
a substrate comprising a pixel region and a non-pixel region outside the pixel region;
at least one organic light emitting diode disposed in the pixel region;
an encapsulation film encapsulating the pixel region and the non-pixel region and comprising at least one organic film and at least one inorganic film,
wherein the at least one organic film and the at least one inorganic film are alternately laminated together, wherein the encapsulation film is positioned so as to encapsulate the organic light emitting diode, wherein an area of the at least one organic film is smaller than an area of the at least one inorganic film and edges of an at least one inorganic film extend past edges of an at least one organic film, wherein the at least one inorganic film is an uppermost layer of the encapsulation film and contacts the substrate, and wherein the at least one organic film does not contact the substrate; and
a desiccant disposed only on a peripheral edge portion of at least one of the at least one organic film and the at least one inorganic film in the non-pixel region of the substrate.
2. The organic light emitting display device of claim 1 , wherein the desiccant is disposed in the at least one organic film.
3. The organic light emitting display device of claim 1 , wherein the desiccant is disposed in the at least one inorganic film.
4. The organic light emitting display device of claim 1 , wherein the desiccant is disposed between the at least one organic film and the at least one inorganic film.
5. The organic light emitting display device of claim 1 , wherein the desiccant comprises at least one of alkali metal oxides, alkali earth metal oxides, metal halides, lithium sulfate, metal sulfates, metal perchlorates, and phosphorus pentoxide.
6. The organic light emitting display device of claim 1 , wherein the encapsulation film comprises at least two layers of the at least one organic film and at least two layers of the at least one inorganic film laminated together.
7. The organic light emitting display device of claim 1 , wherein a thickness of the encapsulation film is from about 0.5 μm to about 100 μm.
8. The organic light emitting display device of claim 1 , wherein the organic film of the encapsulation film comprises at least one of epoxy, acrylate, and urethane acrylate.
9. The organic light emitting display device of claim 1 , wherein the inorganic film of the encapsulation film comprises at least one of SiN x , SiO 2 , SiO x N y , AlO x N y , Al x O y , and Si x O y .
10. The organic light emitting display device of claim 1 further comprising a passivation film disposed between the substrate and the encapsulation film.
11. The organic light emitting display device of claim 10 , wherein the desiccant is disposed between the passivation film and the encapsulation film.
12. The organic light emitting display device of claim 10 , wherein the passivation film comprises an inorganic film.
13. The organic light emitting display device of claim 10 , wherein the passivation film comprises at least one of an inorganic substance, LiF, SiO 2 , Al 2 O 3 , an oxide, a nitride, and an organic substance.