IP Library Granted Patent US 8,128,753
Granted Patent B2
US 8,128,753 · App. 11/282,472 · Granted Mar 6, 2012

Method and apparatus for depositing LED organic film

Assignee: Massachusetts Institute of Technology
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Quick Facts
Patent No.
US 8,128,753
App. No.
11/282,472
Granted
Mar 6, 2012
Kind
B2
Abstract

In one embodiment the disclosure relates to an apparatus for depositing an organic material on a substrate, including a source heater for heating organic particles to form suspended organic particles; a transport stream for delivering the suspended organic particles to a discharge nozzle, the discharge nozzle having a plurality of micro-pores, the micro-pores providing a conduit for passage of the suspended organic particles; and a nozzle heater for pulsatingly heating the micro-pores nozzle to discharge the suspended organic particles from the discharge nozzle.

Claims (33)

1. An apparatus for depositing a thin film of an organic material on a substrate, the apparatus comprising:

a housing defining a first end and a second end and a plurality of baffles interposed therebetween, the housing having an inlet;

a reservoir communicating with the first end of the apparatus, the reservoir storing the organic material;

a discharge nozzle having a plurality of micro-pores provided at the second end of the housing;

a source heater heating the organic material to form organic particles that migrate from the reservoir to the discharge nozzle; and

a pulsing nozzle heater heating the discharge nozzle for discharging the suspended organic particles from the discharge nozzle through the micro-pores.

2. The apparatus of claim 1 , further comprising at least one thermal baffle.

3. The apparatus of claim 1 , further comprising a transport stream for delivering the suspended organic particles to the discharge nozzle, wherein the transport stream is a gas.

4. The apparatus of claim 3 , wherein the transport stream is an inert gas.

5. The apparatus of claim 1 , wherein the organic material further comprises a solvent.

6. The apparatus of claim 1 , wherein the discharge nozzle defines the plurality of micro-pores separated by a rigid structure.

7. The apparatus of claim 1 , wherein the organic material defines a solvent-based composition.

8. The apparatus of claim 1 , wherein the organic material defines a composition having an organic material and an inorganic material.

9. An apparatus for depositing an organic material comprising:

a housing having a micro-porous membrane with a first surface and a second surface and a layer of organic particles provided on the first surface of the micro-porous membrane; and

a means for supplying pulsing energy to the layer of organic material provided in the proximity of the first side of the micro-porous membrane;

wherein the pulsing energy transports the organic material through the micro-porous membrane from the first surface of the micro-porous membrane to the second surface through at least one baffle.

10. The apparatus of claim 9 , wherein the pulsating energy is supplied cyclically.

11. The apparatus of claim 9 , wherein the apparatus is configured to eject said organic particles from the second surface.

12. The apparatus of claim 9 , wherein the organic particles define at least one molecule.

13. The apparatus of claim 9 , wherein the organic particles define a molecular aggregate.

14. The apparatus of claim 9 , further comprising a gas transport configured to form a coating having at least one organic particle.

15. The apparatus of claim 9 , further comprising a liquid solvent system configured to form the coating having at least one organic particle.

16. The apparatus of claim 9 , wherein the apparatus is configured to operate in a relative vacuum.

17. The apparatus of claim 9 , wherein the micro-porous membrane further comprises pores of about 5 nm-100 nm.

18. The apparatus of claim 9 , wherein the micro-porous membrane further comprises pores of about 100 nm-1 micron.

19. The apparatus of claim 9 , wherein the micro-porous membrane further comprises pores of about 5 nm-500 micron.

20. The apparatus of claim 9 , wherein the micro-porous membrane further comprises pores of about 100 nm-10 micron.

21. The apparatus of claim 9 , wherein the heater provides pulsing heat about 100-700° C.

22. The apparatus of claim 9 , wherein the heater provides pulsing heat about 300-500° C.

23. The apparatus of claim 9 , wherein means for supplying pulsing energy is a resistive heater and the pulsing energy is a thermal energy.

24. The apparatus of claim 23 , wherein the heater is in contact with the layer of organic material.

25. The apparatus of claim 9 , wherein the pulsing energy is a mechanical vibration energy.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 1, 2011
From: BULOVIC, VLADIMIR; BALDO, MARC A.; SCHMIDT, MARTIN A.; LEBLANC, VALERIE; CHEN, JIANGLONG
To: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Reel/Frame 026366/0614 →
Continuity (2)
Provisional Application 60629312 · Nov 19, 2004
Related Publication 20060115585A1 · Jun 1, 2006