Electroluminescent arrangement

• US 5,518,824 A
• Filed: 08/02/1994
• Issued: 05/21/1996
• Est. Priority Date: 08/02/1993
• Status: Expired due to Term

• Current Assignee: Merck Patent GmbH (Merck & Co., Inc.)
• Original Assignee: BASF AG (BASF SE)
• Inventors: Haussling, Lukas, Haarer, Dietrich, Siemensmeyer, Karl, Etzbach, Karl-Heinz, Funhoff, Dirk, Simmerer, Juergen
• Primary Examiner(s): Nold, Charles R.
• Application Number:
  US08/284,220
• Time in Patent Office: 658 Days
• Field of Search: 428/690, 428/917, 428/691, 445/24, 427/87, 427/248 B, 427/248 E, 427/248 J, 427/255, 427/157, 313/502, 313/506, 156/611, 156/612, 118/49
• US Class Current: 428/690
• CPC Class Codes: H05B 33/10 Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 50/00 Organic light-emitting devices integrated devices or assemblies of multiple devices H10K59/00, H10K65/00; organic semiconductor lasers H01S5/36
• CPC Class Codes: H10K 85/141 comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE
• CPC Class Codes: H10K 85/311 Phthalocyanine
• CPC Class Codes: H10K 85/60 Organic compounds having low molecular weight H10K85/10 - H10K85/50 take precedence
• CPC Class Codes: H10K 85/621 Aromatic anhydride or imide compounds, e.g. perylene tetra-carboxylic dianhydride or perylene tetracarboxylic di-imide
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
• CPC Class Codes: H10K 85/649 Aromatic compounds comprising a hetero atom
• CPC Class Codes: H10K 85/6565 Oxadiazole compounds
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

In an electroluminescent arrangement containing one or more organic layers, at least one of the layers is obtained by thermal or radiation-induced crosslinking and at least one charge-transporting compound is present per layer. The novel arrangements are very suitable, for example, for the production of displays.

Claims

1. An electroluminescent arrangement, containing one or more organic layers, wherein at least one of the layers is obtained by thermal or radiation-induced crosslinking and at least one charge-transporting compound is present per layer.

4. An electroluminescent arrangement as claimed in claim 1, containing one or more organic layers which are obtained by thermal or radiation-induced crosslinking of charge-transporting compounds.

5. An electroluminescent arrangement as claimed in any of claims 1 to 4, having layers from 10 nm to 10 μ

m thick.

6. An electroluminescent arrangement as claimed in any of claims 1 to 4, wherein one or more layers are obtained by crosslinking with UV radiation.

7. An electroluminescent arrangement as claimed in claim 6, wherein the UV radiation used has a wavelength of from 200 to 450 nm.

8. An electroluminescent arrangement as claimed in any of claims 1 to 4, wherein one or more layers are obtained by crosslinking with electron beams.

9. An electroluminescent arrangement as claimed in claim 8, wherein the electron beams used have energies of 0.3-1 MeV.

10. An electroluminescent arrangement as claimed in any of claims 1 to 4, wherein tertiary aromatic amines, oxadiazoles, thiadiazoles, benzoxazoles, benzotriazoles, fused aromatic systems or polyene compounds are used as charge-transporting compounds in the layer or layers.

11. An electroluminescent arrangement as claimed in any of claims 1 to 4, wherein tertiary aromatic amines, oxadiazoles, thiadiazoles, benzoxazoles, benzotriazoles, phthalocyanines, fused aromatic systems or polyene compounds having groups capable of anionic, cationic or free radical polymerization are used as charge-transporting compounds in the layer or layers.

12. An electroluminescent arrangement as claimed in any of claims 1 to 4, wherein tertiary aromatic amines, oxadiazoles, thiadiazoles, benzoxazoles, benzotriazoles, phthalocyanines, fused aromatic systems or polyene compounds having groups capable of photocycloaddition are used as charge-transporting compounds in the layer or layers.

13. An electroluminescent arrangement as claimed in claim 11, wherein the charge-transporting compounds used are those having groups capable of free radical polymerization.

14. An electroluminescent arrangement as claimed in claim 13, wherein the charge-transporting compounds carry unsubstituted or substituted vinyl radicals as groups capable of free radical polymerization.

15. An electroluminescent arrangement as claimed in claim 14, wherein the unsubstituted or substituted vinyl radicals are vinylcarbonyl groups or contain these.

16. An electroluminescent arrangement as claimed in claim 12, wherein the groups capable of photocycloaddition contain the unsubstituted or substituted structural units ##STR6## where X is O or NR and R is hydrogen or C₁ -C₆ -alkyl.

17. An electroluminescent arrangement as claimed in claim 10, wherein the tertiary aromatic amines used are triaryl-substituted compounds.

18. An electroluminescent arrangement as claimed in any of claims 1 to 4, wherein one or more layers are obtained by thermal crosslinking.

19. An electroluminescent arrangement as claimed in claim 18, wherein the thermal crosslinking is carried out at from 50°

to 250°

.

20. An electroluminescent arrangement as claimed in claim 18, wherein the thermal crosslinking is carried out at from 60°

to 150°

C.

2. An electroluminescent arrangement, containing one or more organic layers which are obtained by thermal or radiation-induced crosslinking, wherein the layers contain at least one crosslinkable polymeric binder or at least one crosslinkable low molecular weight compound and additionally at least one charge transport compound containing groups which may be crosslinkable.

3. An electroluminescent arrangement as claimed in claim 2, wherein the crosslinkable polymeric binder or the crosslinkable low molecular weight compound contains groups capable of free radical, anionic or cationic crosslinking or groups capable of photocycloaddition.