Organic light emitting diode
View Patent ↗An organic light emitting diode that uses edge light emission and has a long lifespan. An anode and a cathode are spaced by a pattern distance and they are located at the upper and lower portions of the light emitting part respectively. The organic light emitting diode uses a separate light emission area of the light emitting part for each of the initial and the final usage stages so that a tail drop of the luminance is prevented and the lifespan of the diode is increased.
1. An organic light emitting diode, comprising:
an anode;
a light emitting part arranged on the anode; and
a cathode arranged on the light emitting part, wherein at least one of the anode and the cathode is arranged as a striped pattern comprising a plurality of stripes, each stripe separated from an adjoining stripe by a pattern distance, the organic light emitting diode being of a laminated structure, the plurality of stripes being within said organic light emitting diode, wherein each of the cathode and the anode have a striped pattern that comprises a plurality of stripes, wherein ones of the plurality of stripes of the cathode extend in a direction that is parallel to ones of the plurality of stripes of the anode.
2. The organic light emitting diode of claim 1 , wherein the pattern distance is equal to a width of a stripe arranged at a center of the striped pattern.
3. The organic light emitting diode of claim 2 , wherein the pattern distance is in the range of 10 μm to 1000 μm.
4. The organic light emitting diode of claim 1 , wherein an another of the anode and the cathode is also arranged in a striped pattern that comprises a plurality of stripes, ones of the plurality of stripes of the anode being separated from each other by a pattern distance, and ones of the plurality of stripes of the cathode being separated from each other by the pattern distance, wherein each stripe of the anode partially overlaps a corresponding stripe of the cathode.
5. The organic light emitting diode of claim 1 , wherein the light emitting part comprises:
a hole injecting layer arranged on the anode;
a hole transporting layer arranged on the hole injecting layer; and
a light emitting layer arranged on the hole transporting layer.
6. The organic light emitting diode of claim 5 , the light emitting layer comprises a polymeric material.
7. The organic light emitting diode of claim 5 , the light emitting layer comprises a polymeric material dissolved in a solvent, wherein the polymeric material coalesces and precipitates out of the solvent upon application of a current thereto for an extended period of time.
8. The organic light emitting display of claim 1 , wherein the light emitting part comprises a polymeric material dissolved in a solvent, the polymeric material to precipitate out of the solvent during a lifetime of the organic light emitting diode.
9. An organic light emitting display comprising a plurality of light emitting diodes, each of said plurality of light emitting diodes comprising:
an anode;
a light emitting layer arranged on the anode; and
a cathode arranged on the light emitting layer, wherein at least one of the anode and the cathode is arranged as a striped pattern comprising a plurality of stripes, each stripe separated from an adjoining stripe by a pattern distance, each of said organic light emitting diodes being of a laminated structure, wherein each of the cathode and the anode have a striped pattern that comprises a plurality of stripes, wherein ones of the plurality of stripes of the cathode extend in a direction that is parallel to ones of the plurality of stripes of the anode.
10. The organic light emitting display of claim 9 , wherein ones of the stripes of the anode partially overlaps ones of the stripes of the cathode.
11. The organic light emitting display of claim 9 , wherein the light emitting layer comprises a polymeric material.