Organic light emitting diode display device
An organic light emitting diode display device, including a substrate, and at least one organic light emitting diode on the substrate, wherein the organic light emitting diode includes a first electrode on the substrate, an organic light emitting layer on the first electrode, and a second electrode on the organic light emitting layer, and the organic light emitting layer has at least one opening.
1. An organic light emitting diode display device, comprising:
a substrate; and
at least one organic light emitting diode on the substrate,
wherein the organic light emitting diode comprises:
a first electrode on the substrate;
an organic light emitting layer on the first electrode; and
a second electrode on the organic light emitting layer, wherein:
the organic light emitting layer has at least one opening, and
the opening is positioned on the first electrode.
2. The organic light emitting diode display device of claim 1 , wherein the opening has at least one of a slit shape, a circular shape, a polygonal shape, and a cross (+) shape when viewed from a plan view.
3. The organic light emitting diode display device of claim 1 , further comprising a low-refractive-index portion filled in the opening, the low-refractive-index portion having a refractive index lower than the organic light emitting layer.
4. The organic light emitting diode display device of claim 3 , wherein the low-refractive-index portion has a refractive index in a range of about 1.0 to about 1.4.
5. The organic light emitting diode display device of claim 3 , wherein a difference between refractive indices of the organic light emitting layer and the low-refractive-index portion is about 0.1 or more.
6. The organic light emitting diode display device of claim 3 , wherein the low-refractive-index portion comprises at least one of an inert gas, CaF 2 , NaF, Na 3 AlF 6 , SiO x , AlF 3 , LiF, MgF 2 , and Alq 3 (Tris(8-hydroxyquinolinato)aluminum), an acrylic resin, a polyimide resin, and a polyamide resin.
7. The organic light emitting diode display device of claim 3 , wherein the low-refractive-index portion comprises light-scattering particles.
8. The organic light emitting diode display device of claim 1 , wherein the second electrode comprises an opening having a shape substantially the same as the opening of the organic light emitting layer.
9. The organic light emitting diode display device of claim 1 , wherein the second electrode extends onto the opening of the organic light emitting layer.
10. The organic light emitting diode display device of claim 1 , wherein the first electrode is a pixel electrode.
11. The organic light emitting diode display device of claim 1 , further comprising, between the first electrode and the organic light emitting layer, at least one of a hole injection layer and a hole transporting layer.
12. The organic light emitting diode display device of claim 1 , further comprising, between the organic light emitting layer and the second electrode, at least one of an electron transporting layer and an electron injection layer.