US4775820A
Expired / Lapsed
US
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Multilayer electroluminescent device
Assignee: Canon Inc
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Filing: 1985-07-29
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Granted: 1988-10-04
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Expires: 2005-07-29
Abstract
Abstract An electroluminescent device comprises a pair of electrodes and a luminescent layer sandwiched between the electrodes, the luminescent layer comprising: (a) one layer comprising a relatively electron-acceptable organic compound, (b) another layer containing a relatively electron-donative organic compound, and (c) still another layer having an insulating property, the three layers being repeatedly accumulated, and at least one of the three layers having a monomolecular film or a monomolecular layer built-up film.
Inventors
- 👤 Ken Eguchi
- 👤 Haruki Kawada
- 👤 Yukuo Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:56
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; H05B33/22
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
76 words
An electroluminescent device which comprises a pair of electrodes and a luminescent layer, the luminescent layer comprising: (a) a first layer comprising a relatively electron acceptable organic compound, (b) a second layer comprising a relatively electron donative organic compound, and (c) a third layer having an insulating property, the three layers being repeatedly accumulated at least twice, and at least one of the three layers having a Langmuir-Blodgette monomolecular film or a monomolecular layer built-up film.
Claim 2
Dependent Claim
76 words
An electroluminescent device which comprises a pair of electrodes and a luminescent layer, the luminescent layer comprising: (a) a first layer comprising a relatively electron acceptable organic compound, (b) a second layer comprising a relatively electron donative organic compound, and (c) a third layer having an insulating property, the three layers being repeatedly accumulated at least twice, and at least one of the three layers having a Langmuir-Blodgette monomolecular film or a monomolecular layer built-up film.
Claim 3
Dependent Claim
18 words
An electroluminescent device according to claim 1, wherein at least one of the pair of electrodes is transparent.
Claim 4
Dependent Claim
18 words
An electroluminescent device according to claim 1, wherein said electron acceptable compound is a luminescent Pi-electron containing compound.
Claim 5
Dependent Claim
76 words
An electroluminescent device according to claim 1, wherein said electron acceptable compound is selected from fused polycyclic aromatic hydrocarbons, p-terphenyl, 2,5-diphenyloxazole, 1,4-bis (2-methyl-styryl)benzene, xanthine, coumarin, acridine, cyanine dye, benzophenone, phthalocyanine and metal complexes thereof, porphyrin and metal complexes thereof, 8-hydroxyquinoline and metal complexes thereof, ruthenium complexes, rare earth complexes and derivatives of the above-mentioned compounds, and furthermore, heterocyclic compounds other than those mentioned above derivatives thereof, aromatic amines, aromatic polyamines, and compounds having a quinone structure.
Claim 6
Dependent Claim
50 words
An electroluminescent device according to claim 1, wherein said third layer is selected from compounds represented by the following formulae A and B; ##STR14## (wherein n is 10≦n≦30, and X is a group of --COOH, --CONH 2 , --COOR, --N + (CH 3 ) 3 .sup.· Cl - , ##STR15##
Claim 7
Dependent Claim
18 words
An electroluminescent device according to claim 1, wherein said first layer has a thickness of 300Å or less.
Claim 8
Dependent Claim
18 words
An electroluminescent device according to claim 1, wherein said second layer has a thickness of 300Å or less.
Claim 9
Dependent Claim
18 words
An electroluminescent device according to claim 1, wherein said third layer has a thickness of 500Å or less.
Claim 10
Dependent Claim
20 words
An electroluminescent device according to claim 1, wherein said whole luminescent layer has a thickness of 1 μm or less.
Claim 11
Dependent Claim
18 words
An electroluminescent device according to claim 1, wherein said electrode has a thickness of 0.01 to 0.3 μm.
Claim 12
Dependent Claim
114 words
An electroluminescent device which comprises a pair of electrodes and a luminescent layer, the luminescent layer comprising: (a) a first layer comprising a relatively electron acceptable organic compound, (b) a second layer comprising a relatively electron donative organic compound, and (c) a third layer having an insulating property, these layers being arranged such that, in the direction from one electrode to the other electrode, on the third layer there are successively overlaid the first layer, the second layer and another third layer in the mentioned order and this three-layer set is accumulated at least twice, and at least one of the three layers having a Lagmuir-Blodgett monomolecular film or a monomolecular layer built-up film.
Claim 13
Dependent Claim
114 words
An electroluminescent device which comprises a pair of electrodes and a luminescent layer, the luminescent layer comprising: (a) a first layer comprising a relatively electron acceptable organic compound, (b) a second layer comprising a relatively electron donative organic compound, and (c) a third layer having an insulating property, these layers being arranged such that, in the direction from one electrode to the other electrode, on the third layer there are successively overlaid the first layer, the second layer and another third layer in the mentioned order and this three-layer set is accumulated at least twice, and at least one of the three layers having a Lagmuir-Blodgett monomolecular film or a monomolecular layer built-up film.
Claim 14
Dependent Claim
18 words
An electroluminescent device according to claim 11, wherein at least one of the pair of electrodes is transparent.
Claim 15
Dependent Claim
17 words
An electroluminescent device according to claim 11, wherein said electron-acceptable compound is a luminescent Pi-electron containing compound.
Claim 16
Dependent Claim
76 words
An electroluminescent device according to claim 11, wherein said electron acceptable compound is selected from fused polycyclic aromatic hydrocarbons, p-terphenyl, 2,5-diphenyloxazole, 1,4-bis (2-methyl-styryl)-benzene, xanthine, coumarin, acridine, cyanine dye, benzophenone, phthalocyanine and metal complexes thereof, porphyrin and metal complexes thereof, 8-hydroxyquinoline and metal complexes thereof, ruthenium complexes, rare earth complexes and derivatives of the above-mentioned compounds, and furthermore, heterocyclic compounds other than those mentioned above, derivatives thereof, aromatic amines, aromatic polyamines, and compounds having a quinone structure.
Claim 17
Dependent Claim
48 words
An electroluminescent device according to claim 11, wherein said third layer is selected from compounds represented by the following formulae A and B; ##STR16## (wherein n is 10≦n≦30, and X is a group of --COOH, --CONH 2 , --COOR,--N + (CH 3 ) 3 ·Cl - , ##STR17##
Claim 18
Dependent Claim
18 words
An electroluminescent device according to claim 11, wherein said first layer has a thickness of 300Å or less.
Claim 19
Dependent Claim
18 words
An electroluminescent device according to claim 11, wherein said second layer has a thickness of 300Å or less.
Claim 20
Dependent Claim
18 words
An electroluminescent device according to claim 11, wherein said third layer has a thickness of 500Å or less.
Claim 21
Dependent Claim
20 words
An electroluminescent device according to claim 11, wherein said whole luminescent layer has a thickness of 1 μm or less.
Claim 22
Dependent Claim
18 words
An electroluminescent device according to claim 11, wherein said electrode has a thickness of 0.01 to 0.3 μm.
Claim 23
Dependent Claim
17 words
An electroluminescent device according to claim 1, wherein said electron-donative compound is a luminescent Pi-electron containing compound.
Claim 24
Dependent Claim
76 words
An electroluminescent device according to claim 1 wherein said electron-donative compound is selected from the group consisting of fused polycyclic aromatic hydrocarbons, p-terphenyl, 2,5-diphenyloxazole, 1,4-bis(2-methyl-styryl)benzene, xanthine, coumarin, acridine, cyanine dye, benzophenone, phthalocyanine and metal complexes thereof, porphyrin and metal complexes thereof, 8-hydroxyquinoline and metal complexes thereof, ruthenium complexes, rare earth complexes and derivatives of the above-mentioned compounds, heterocyclic compounds other than those mentioned above, derivatives thereof, armoatic amines, aromatic polyamines, and compounds having a quinone structure.
Claim 25
Dependent Claim
17 words
An electroluminescent device according to claim 11, wherein said electron-donative oompound is a luminescent Pi-electron containing compound.
Claim 26
Dependent Claim
77 words
An electroluminescent device according to claim 11, wherein said electron donative compound is selected from the group consisting of fused polycyclic aromatic hydrocarbons, p-terphenyl, 2,5-diphenyloxazole, 1,4-bis(2-methyl-styryl)bezene, xanthine, coumarin, acridine, cyanine dye, benzophenone, phtalocyanine and metal complexes thereof, porphyrin and metal complexes thereof, 8-hydrozyquinoline and metal complexes thereof, ruthenium complexes, rare earth complexes and derivatives of the above-mentioned compounds, heterocyclic compounds other than those mentioned above, derivatives thereof, aromatic amines, aromatic polyamines, and compounds having a quinone structure.
Claim 27
Dependent Claim
29 words
The electroluminescent device of claim 1 wherein at least one of said first layer and said second layer is a Langmuir-Blodgett monomolecular film or a monomolecular layer built-up film.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |