Method of making an electroluminescent device having a patterned emitter layer and non-patterned emitter layer
View Patent ↗Electroluminescent devices, and methods of making and using such devices, are disclosed. The electroluminescent devices include a patterned layer on a solvent-susceptible layer. The electroluminescent devices may be used, for example, as full color display devices.
1. A method of making an electroluminescent device comprising:
selectively thermally transferring a portion of a transfer layer comprising a first emitter to a receptor to form a patterned emitter layer comprising the first emitter disposed on the receptor; and
disposing a layer comprising a second emitter on the patterned emitter layer and the receptor to form a non-patterned emitter layer comprising the second emitter.
2. The method of claim 1 further comprising selectively thermally transferring, prior to forming the non-patterned emitter layer, a portion of a second transfer layer comprising a third emitter to the receptor to form a second patterned emitter layer comprising the third emitter, disposed on the receptor.
3. The method of claim 1 wherein the receptor is an anode, a hole transport layer, a hole injection layer, an electron blocking layer, a dielectric layer, a passivation layer, a substrate, or a combination thereof.
4. The method of claim 1 wherein the non-patterned emitter layer is an undoped electron transport layer, a doped electron transport layer, an undoped hole blocking layer, a doped hole blocking layer, or a combination thereof.
5. The method of claim 1 wherein the receptor is a hole transport layer and is attached to an anode.
6. The method of claim 5 wherein the device further comprises a hole injection layer disposed between the hole transport layer and the anode.
7. The method of claim 1 further comprising disposing a cathode on the non-patterned emitter layer.
8. The method of claim 1 wherein the receptor is solvent-susceptible.
9. A method of making an electroluminescent device comprising:
providing a non-patterned layer comprising a first emitter; and
selectively thermally transferring a portion of a transfer layer comprising a second emitter to the non-patterned emitter layer to form a patterned emitter layer comprising the second emitter, disposed on the non-patterned emitter layer.
10. The method of claim 9 further comprising selectively thermally transferring a portion of a second transfer layer comprising a third emitter to the non-patterned emitter layer to form a second patterned emitter layer comprising the third emitter, disposed on the non-patterned emitter layer.
11. The method of claim 9 wherein the non-patterned emitter layer is an undoped electron transport layer, a doped electron transport layer, an undoped hole blocking layer, a doped hole blocking layer, an undoped electron injecting layer, a doped electron injecting layer, or a combination thereof.
12. The method of claim 9 further comprising disposing an anode on the patterned emitter layer and the non-patterned emitter layer.
13. The method of claim 12 wherein the device further comprises a hole transport layer, a hole injection layer, an electron blocking layer, or a combination thereof, disposed between the patterned emitter layer and the anode.
14. The method of claim 9 wherein the side of the non-patterned emitter layer opposite the patterned emitter layer is attached to a cathode.
15. The method of claim 9 wherein the non-patterned emitter layer is solvent-susceptible.
16. A method of making an electroluminescent device comprising:
providing a solvent-susceptible layer;
disposing a patterned layer comprising a first emitter and a non-volatile component that is the same as or different than the first emitter on the solvent-susceptible layer; and
disposing a layer comprising a second emitter on the patterned layer and the solvent-susceptible layer to form a non-patterned emitter layer comprising the second emitter.
17. The method of claim 16 wherein disposing the patterned layer comprises selectively thermally transferring a portion of a transfer layer comprising the first emitter and the non-volatile component.
18. The method of claim 16 further comprising, prior to forming the non-patterned emitter layer, disposing a second patterned layer comprising a third emitter on the solvent-susceptible layer.
19. The method of claim 18 wherein disposing the second patterned layer comprises selectively thermally transferring a portion of a second transfer layer comprising the third emitter.
20. The method of claim 19 wherein the second transfer layer further comprises a non-volatile component.
21. A method of making an electroluminescent device comprising:
providing a solvent-susceptible, non-patterned layer comprising a first emitter; and
disposing a patterned layer comprising a second emitter and a non-volatile component that is the same as or different than the second emitter, on the solvent-susceptible layer.
22. The method of claim 21 wherein disposing the patterned layer comprises selectively thermally transferring a portion of a transfer layer comprising the second emitter and the non-volatile component.
23. The method of claim 21 further comprising disposing a second patterned layer comprising a third emitter on the solvent-susceptible layer.
24. The method of claim 23 wherein disposing the second patterned layer comprises selectively thermally transferring a portion of a second transfer layer comprising the third emitter.
25. The method of claim 24 wherein the second transfer layer further comprises a non-volatile component.