Organic light emitting diode, method for the production thereof and uses thereof
View Patent ↗The invention relates to an organic light emitting diode (OLED), also referred to as a light emitting diode, which comprises at least one substrate, one anode, one hole transport layer, one emitter layer, one cathode and one encapsulation. It is proposed that an energy carrier, which supplies the voltage that causes the OLED to emit light, be integrated into the OLED. The energy carrier can be a battery (energy storage device) or an energy converter (photovoltaic element).
1. A light emitting device, comprising:
one or more substrates;
an organic light emitting diode supported by the one or more substrates, wherein the organic light emitting diode comprises:
a first electrode;
an emitter layer disposed on the first electrode; and
a second electrode disposed on the emitter layer; and
an energy source to apply a voltage to the organic light emitting diode, wherein the energy source is supported by the one or more substrates;
wherein the one or more substrates include an insulation layer that is at least semitransparent and the insulation layer is between the organic light emitting diode and the energy source.
2. The device according to claim 1 , further comprising:
an encapsulation that encapsulates the energy source.
3. The device according to claim 2 , wherein:
the encapsulation includes a sealing layer.
4. The device according to claim 1 , further comprising:
an encapsulation that encapsulates the organic light emitting diode.
5. The device according to claim 4 , wherein:
the encapsulation includes a sealing layer.
6. The device according to claim 1 , wherein:
the energy source is an energy converter.
7. The device according to claim 6 , wherein:
the energy converter comprises a photovoltaic element.
8. The device according to claims 1 wherein:
the insulation layer comprises at least one of a planarizing layer, a thin substrate, a flexible layer or a getter layer.
9. The device according to claim 1 , wherein:
the energy source is an energy storage device.
10. The device according to claim 1 , wherein:
the energy source is at least semitransparent.
11. The device according to claim 1 , wherein:
the organic light emitting diode is supported by a first substrate of the one or more substrates;
the energy source is supported by a second substrate of the one or more substrates; and
the first and second substrates encapsulate the organic light emitting diode and the energy source.
12. The device according to claim 1 , wherein:
the organic light emitting diode is supported by a first side of a substrate of the one or more substrates; and
the energy source is supported by a second side of the substrate of the one or more substrates.
13. A method for producing a light emitting device, comprising one or more substrates and an organic light emitting diode having an anode, an emitter layer and a cathode, wherein an energy source is integrated into the light emitting device to provide a voltage to the organic light emitting diode, comprising:
forming an energy source which is supported by one or more substrates;
forming an organic light emitting diode which is supported by the one or more substrates;
forming an insulation layer that is at least semitransparent between the organic light emitting diode and the energy source;
encapsulating the energy source.
14. The method of claim 13 , wherein:
forming the energy source includes forming a solar cell.
15. The method of claim 13 , wherein:
encapsulating the energy source includes encapsulating the organic light emitting diode.
16. A method for producing a light emitting device comprising one or more substrates and an organic light emitting diode having an anode, an emitter layer and a cathode, wherein an energy source is integrated into the light emitting device to provide a voltage to the organic light emitting diode, the method comprising:
constructing an energy source supported by one or more substrates;
encapsulating the energy source;
providing a semitransparent insulation layer between the organic light emitting diode and the energy source;
constructing an organic light emitting diode on the encapsulated energy source supported by the one or more substrates to form a combined energy source and organic light emitting diode; and
encapsulating the combined energy source and organic light emitting diode.
17. The method of claim 16 , wherein:
constructing an energy source on a substrate includes constructing a solar cell.
18. The method of claim 16 , wherein the step of encapsulating the energy source includes encapsulating the energy source with an insulation layer that is at least semitransparent.
19. A method for producing a light emitting device, comprising one or more substrates, an organic light emitting diode having an anode, an emitter layer and a cathode, and an energy carrier including a photoactive layer that is at least semitransparent to light in the visible spectrum and is integrated into the light emitting device to provide a voltage to the organic light emitting diode, comprising:
forming a first cathode supported by one or more substrates;
forming a first photoactive layer on the first cathode;
forming an anode on the photoactive layer;
forming an emitter layer on the anode; and
forming a second cathode on the emitter layer;
wherein the energy carrier is in a light emitting path of the organic light emitting diode.
20. A method of operating a light emitting device that comprises one or more substrates, a light emitting diode supported by the one or more substrates having a first electrode, an emitter layer and a second electrode, wherein the emitter layer is between the first and second electrodes and at least one energy converter that is at least semitransparent is integrated into the organic light emitting device such that the first and second electrodes, emitter layer and energy source are encapsulated, the method comprising:
supplying a voltage from the energy converter to the organic light emitting diode;
applying the supplied voltage across the first electrode and the second electrode; and
emitting light from the light emitting diode through the energy converter when the voltage is applied across the first and second electrodes.
21. The method of claim 20 , further comprising:
detecting an environmental influence selected from the group consisting of radiation, heat, pressure and sound, wherein detecting the environmental influence initiates the step of supplying a voltage.
22. An electronic paper, comprising:
one or more flexible substrates;
an organic light emitting diode supported by the one or more flexible substrates, wherein the organic light emitting diode comprises:
a first electrode;
an emitter layer disposed on the first electrode; and
a second electrode disposed on the emitter layer; and
an energy source to apply a voltage to the organic light emitting diode wherein the energy source is supported by the one or more flexible substrates;
wherein the substrate, diode and energy source form a flexible display.
23. A light emitting device, comprising:
one or more substrates;
an organic light emitting diode supported by the one or more substrates, comprising:
a first electrode;
an emitter layer disposed on the first electrode; and
a second electrode disposed on the emitter layer; and
an energy carrier that is at least semitransparent to light in the visible spectrum to apply a voltage to the organic light emitting diode, wherein the energy carrier is supported by the one or more substrates and is arranged in the light emitting path of the organic light emitting diode.
24. The device according to claim 23 , wherein:
the organic light emitting diode contacts the energy source.
25. The device according to claim 23 wherein:
the energy source includes the first electrode of the organic light emitting diode.
26. The device according to claim 25 , wherein:
the first electrode is an anode.
27. The device of claim 23 , wherein the energy carrier is transparent.
28. The device of claim 23 , wherein the energy carrier comprises organic material.
29. The device of claim 23 , wherein the energy carrier comprises a photovoltaic cell.