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US5674635A
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Electroluminescent device
Assignee: LG Display Co Ltd
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Filing: 1994-09-28
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Granted: 1997-10-07
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Expires: 2014-09-28
Abstract
Abstract An electroluminescent (EL) device includes a polymeric tetraaryl substituted biphenyldiamine.
Inventors
- 👤 Bing R. Hsieh
- 👤 Gordon E. Johnson
- 👤 Kathleen M. McGrane
- 👤 Milan Stolka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:05
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/10; H05B33/12; H05B33/14; Y; Y10; Y10S; Y10S428/00; Y10S428/917; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663; Y10T428/31678; Y10T428/31681; Y10T428/31786
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
72 words
An electroluminescent device comprising a support substrate, a hole injecting electrode an active layer and an electron injecting electrode wherein the active layer comprises a polymer of a tetraaryl-substituted biphenyldiamine, wherein the polymer of tetraaryl-substituted biphenyldiamine is (A) a copolymer of N,N'-diphenyl-N,N'-bis(3-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine or N,N'-diphenyl-N,N'-bis(4-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine with a member selected from the group consisting of bisphenyl)A-bischloroformate, ethyleneglycol bischloroformate, diethyleneglycol bischloroformate, adipoylchloride, suberoylchloride and sebacoylchloride or (B) a siloxane N,N'-diphenyl-N,N'-bis(3-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine polymer or siloxane N,N'-diphenyl-N,N'-bis(4-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine polymer.
Claim 2
Dependent Claim
72 words
An electroluminescent device comprising a support substrate, a hole injecting electrode an active layer and an electron injecting electrode wherein the active layer comprises a polymer of a tetraaryl-substituted biphenyldiamine, wherein the polymer of tetraaryl-substituted biphenyldiamine is (A) a copolymer of N,N'-diphenyl-N,N'-bis(3-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine or N,N'-diphenyl-N,N'-bis(4-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine with a member selected from the group consisting of bisphenyl)A-bischloroformate, ethyleneglycol bischloroformate, diethyleneglycol bischloroformate, adipoylchloride, suberoylchloride and sebacoylchloride or (B) a siloxane N,N'-diphenyl-N,N'-bis(3-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine polymer or siloxane N,N'-diphenyl-N,N'-bis(4-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine polymer.
Claim 3
Dependent Claim
20 words
The electroluminescent device of claim 1 wherein the polymer of a tetraaryl-substituted biphenyldiamine is present as a hole transport polymer.
Claim 4
Dependent Claim
12 words
The electroluminescent device of claim 1, additionally comprising an electron transporting material.
Claim 5
Dependent Claim
13 words
The electroluminescent device of claim 3, wherein the electron transporting material is 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole.
Claim 6
Dependent Claim
34 words
The electroluminescent device of claim 1, wherein said active layer is obtained by a solution coating method and is comprised of an emitter and the polymeric tetraaryl substituted biphenyldiamine as a hole transport polymer.
Claim 7
Dependent Claim
20 words
The electroluminescent device of claim 5, wherein the substrate is comprised of a polymer, a metal, a semiconductor or glass.
Claim 8
Dependent Claim
17 words
The electroluminescent device of claim 5, wherein the hole injecting electrode is comprised of indium tin oxide.
Claim 9
Dependent Claim
23 words
The electroluminescent device of claim 5, wherein the emitter for said active layer is comprised of a coumarin dye or a polymethine dye.
Claim 10
Dependent Claim
17 words
The electroluminescent device of claim 5, further comprising a protective coating coated over said electron injecting electrode.
Claim 11
Dependent Claim
11 words
The electroluminescent device of claim 5, further comprising a top overcoating.
Claim 12
Dependent Claim
12 words
The electroluminescent device of claim 10, wherein the top overcoating is glass.
Claim 13
Dependent Claim
35 words
An electroluminescent device, comprising a hole injecting electrode, an active layer and an electron injecting electrode, wherein the active layer comprises a blend of a polymeric tetraaryl-substituted biphenyldiamine and a phenyl substituted poly (p-phenylene vinylene).
Claim 14
Dependent Claim
35 words
An electroluminescent device, comprising a hole injecting electrode, an active layer and an electron injecting electrode, wherein the active layer comprises a blend of a polymeric tetraaryl-substituted biphenyldiamine and a phenyl substituted poly (p-phenylene vinylene).
Claim 15
Dependent Claim
23 words
The electroluminescent device of claim 12, wherein the phenyl substituted poly(p-phenylene vinylene) is poly(2-phenyl 1,4-phenylene vinylene), poly(1,4-phenylene-1'2"-diphenyl vinylene), poly(1,4-phenylene-1'-phenyl vinylene), ##STR17## mixtures thereof.
Claim 16
Dependent Claim
66 words
An electroluminescent device comprising a support substrate, a hole injecting electrode, an active layer and an electron injecting electrode, wherein the active layer comprises a polycarbonate, a polyester, a polyarylene ether or a polysiloxane of the following formulae: ##STR18## wherein TBD is a tetraaryl substituted biphenyldiamine moiety; G is a hydrocarbon group or a heterocyclic group and EWG is an aromatic group containing electron withdrawing groups.
Claim 17
Dependent Claim
66 words
An electroluminescent device comprising a support substrate, a hole injecting electrode, an active layer and an electron injecting electrode, wherein the active layer comprises a polycarbonate, a polyester, a polyarylene ether or a polysiloxane of the following formulae: ##STR18## wherein TBD is a tetraaryl substituted biphenyldiamine moiety; G is a hydrocarbon group or a heterocyclic group and EWG is an aromatic group containing electron withdrawing groups.
Claim 18
Dependent Claim
40 words
The electroluminescent device of claim 14 wherein G, the hydrocarbon group or heterocyclic group is: --(CH 2 )n--, (n=1-10); --(CH 2 CH a O)n--, (n=1-6); ##STR19## where R=Phenyl or alkyl groups; Y=S, O, N-R(R=alkyl, or phenyl); and Z=alkyl or phenylene.
Claim 19
Dependent Claim
25 words
The electroluminescent device of claim 14, wherein EWG, is: ##STR20## where R=Phenyl or alkyl groups; Y=S, O, N-R (R=alkyl, or phenyl); and Z=alkyl or phenylene.
Claim 20
Independent Claim
74 words
A method of manufacture of an electroluminescent device, comprising forming an active layer with supporting substrate, hole injecting electrode and electron injecting electrode, comprising depositing onto a substrate by solution coating, a layer of (A) a tetraaryl-substituted biphenyl diamine copolymer of N,N'-diphenyl-N,N'-bis(3-hydroxyphenyl)1,1'-biphenyl-4,4'-diamine or N,N'-diphenyl-N,N'-bis(4-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine with a member selected from the group consisting of bisphenol -A-bischloroformate, ethyleneglycol bischloroformate, diethyleneglycol bischloroformate, adipoylchloride, suberoylchloride and sebacoylchloride or (B) a siloxane based! N,N'-diphenyl-N,N'-bis(3-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine polymer or siloxane N,N'-diphenyl-N,N'-bis(4-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine polymer.
Claim 21
Independent Claim
74 words
A method of manufacture of an electroluminescent device, comprising forming an active layer with supporting substrate, hole injecting electrode and electron injecting electrode, comprising depositing onto a substrate by solution coating, a layer of (A) a tetraaryl-substituted biphenyl diamine copolymer of N,N'-diphenyl-N,N'-bis(3-hydroxyphenyl)1,1'-biphenyl-4,4'-diamine or N,N'-diphenyl-N,N'-bis(4-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine with a member selected from the group consisting of bisphenol -A-bischloroformate, ethyleneglycol bischloroformate, diethyleneglycol bischloroformate, adipoylchloride, suberoylchloride and sebacoylchloride or (B) a siloxane based! N,N'-diphenyl-N,N'-bis(3-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine polymer or siloxane N,N'-diphenyl-N,N'-bis(4-hydroxyphenyl)-1,1'-biphenyl-4,4'-diamine polymer.
Claim 22
Dependent Claim
11 words
The method of claim 17, comprising depositing the layer by spin-coating.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-06 | 2001-04-07 | 2001-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-06 | 2005-04-07 | 2005-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-06 | 2009-04-07 | 2009-10-07 | $7700.00 | Window Closed / Lapsed |