Vacuum deposited, non-polymeric flexible organic light emitting devices

• US 5,844,363 A
• Filed: 01/23/1997
• Issued: 12/01/1998
• Est. Priority Date: 01/23/1997
• Status: Expired due to Term

• Current Assignee: The Trustees of Princeton University (Princeton University)
• Original Assignee: The Trustees of Princeton University (Princeton University)
• Inventors: Forrest, Stephen R., Burrows, Paul, Gu, Gong
• Primary Examiner(s): O'Shea, Sandra L.
• Assistant Examiner(s): Patel, Vip
• Application Number:
  US08/789,319
• Time in Patent Office: 677 Days
• Field of Search: 313/503, 313/504, 313/506, 313/511
• US Class Current: 313/506
• CPC Class Codes: H05B 33/10 Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
• CPC Class Codes: H05B 33/12 Light sources with substantially two-dimensional radiating surfaces
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers

Abstract

An organic light emitting device (OLED) is disclosed for which the hole transporting layer, the electron transporting layer and/or the emissive layer, if separately present, is comprised of a non-polymeric material. A method for preparing such OLED'"'"'s using vacuum deposition techniques is further disclosed.

Claims

1. A flexible organic light emitting device comprising:

a flexible substrate layer and;

a) a hole transporting layer comprised of a non-polymeric material or

b) an electron transporting layer comprised of a nonpolymeric material.

2. The flexible organic light emitting device of claim 1 includes a hole transporting layer comprised of a non-polymeric material and an electron transporting layer comprised of a non-polymeric material.

3. The flexible organic light emitting device of claim 1 includes a separate emissive layer comprised of a nonpolymeric material.

4. The flexible organic light emitting device of claim 1 wherein said flexible substrate is transparent.

5. The flexible organic light emitting device of claim 1 wherein said flexible substrate is polymeric.

6. The flexible organic light emitting device of claim 1 wherein said flexible substrate comprises a polyester.

7. The flexible organic light emitting device of claim 1 further includes an anode layer comprised of indium tin oxide.

8. The flexible organic light emitting device of claim 1 wherein said hole transporting layer comprises N,N'"'"'-diphenyl-N,N'"'"'-bis(3-methylpheny)1-1'"'"'biphenyl-4,4'"'"'diamine.

9. The flexible organic light emitting device of claim 1 wherein said electron transporting layer comprises tris(8-hydroxyquinoline)aluminum.

12. A display incorporating the flexible organic light emitting device of any one of claims 1 through 11.

13. A vehicle incorporating the flexible organic light emitting device electron transporting layer of any one of claims 1 through 11.

14. A computer incorporating the flexible organic light emitting device electron transporting layer of any one of claims 1 through 11.

15. A television incorporating the flexible organic light emitting device electron transporting layer of any one of claims 1 through 11.

16. A printer incorporating the flexible organic light emitting device electron transporting layer of any one of claims 1 through 11.

17. A wall, theater or stadium screen incorporating the flexible organic light emitting device electron transporting layer of any one of claims 1 through 11.

18. A billboard or a sign incorporating the flexible organic light emitting device of any one of claims 1 through 11.

10. A flexible organic light emitting device comprising:

a flexible substrate,

an anode layer on said flexible substrate,

a hole transporting layer on said anode layer,

an electron transporting layer on said hole transporting layer and

a cathode layer on said electron transporting layer,

wherein said hole transporting layer or said electron transporting layer is comprised of a non-polymeric material.

11. A flexible organic light emitting device comprising:

a flexible substrate,

a cathode layer on said flexible substrate,

a hole transporting layer on said cathode layer,

an electron transporting layer on said hole transporting layer and an anode layer on said electron transporting layer, wherein said hole transporting layer or said electron transporting layer is comprised of a non-polymeric material.

19. A flexible organic light emitting device comprising:

a flexible, transparent polyester substrate,

an anode layer on said flexible, transparent polyester substrate, said anode layer being comprised of indium tin oxide;

a hole transporting layer on said anode layer, said hole transporting layer being comprised of N,N'"'"'-diphenyl-N,N'"'"'-bis(3-methylpheny)1-1'"'"'biphenyl-4,4'"'"'diamine;

an electron transporting layer on said hole transporting layer, said electron transporting layer being comprised of tris-(8-hydroxyquinoline) aluminum; and

a cathode layer on said electron transporting layer.