US6372154B1
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US
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Luminescent ink for printing of organic luminescent devices
Assignee: Canon Inc
•
Filing: 1999-12-30
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Granted: 2002-04-16
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Expires: 2019-12-30
Abstract
Abstract Organic luminescent ink (L-ink) is disclosed for use in printing thin films of organic luminescent material. The L-ink is particularly useful in fabricating organic optoelectronic devices, e.g. organic luminescent devices. The L-ink contains at least one organic luminescent material mixed with a solvent and other functional additives to provide the necessary optical, electronic and morphological properties for light-emitting devices (LEDs). The additives play an important role either for enhanced thin film printing or for better performance of the optoelectronic device. The functional additives may be chemically bound to the luminescent compounds or polymers. Luminescent organic compounds, oligomers, or polymers with relatively low solution viscosity, good thin film formability, and good charge transporting properties, are preferred. The L-inks can be cross-linked under certain conditions to enhance thin film properties. The L-ink can be used in various printing methods, such as screen printing, stamp printing, and preferably ink-jet printing (including bubble-jet printing).
Inventors
- 👤 Xiao-Chang Charles Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:28
CPC Classifications
H; H10; H10K; H10K71/00; H10K71/10; H10K71/12; H10K71/13; H10K71/135; H10K71/15; H10K50/00; H10K50/10; H10K50/11; H10K85/00; H10K85/10; H10K85/111; H10K85/113; H10K85/1135; H10K85/114; H10K85/115; H10K85/141; H10K85/146; H10K85/154; H10K85/30; H10K85/321; H10K85/324; H10K85/341; H10K85/40; H10K85/60; H10K85/615; H10K85/631; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/549; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 106
Claim 1
Independent Claim
59 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound; an inert solvent; a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties; and a cross-linking agent.
Claim 2
Dependent Claim
59 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound; an inert solvent; a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties; and a cross-linking agent.
Claim 3
Dependent Claim
27 words
A luminescent ink for printing according to claim 1 , wherein the functional additive comprises an organic luminescent molecule having a molecular weight less than 5000 g/mol.
Claim 4
Dependent Claim
27 words
A luminescent ink for printing according to claim 2 , wherein the organic luminescent molecule is selected from anthracene, tris(8-hydroxy quinoline) aluminum, 4,4′-N,N′-dicarbazole-biphenyl, distyrylbenzene, 3-(2-benzothiazolyl)-7-(diethylamino)-coumarin, and rubrene.
Claim 5
Dependent Claim
27 words
A luminescent ink for printing according to claim 2 , wherein the organic luminescent molecule concentration range is between 0.5 to 40 percent of the solid ingredients.
Claim 6
Dependent Claim
27 words
A luminescent ink for printing according to claim 1 , wherein the functional additive comprises an organic luminescent polymer having a molecular weight larger than 5000 g/mol.
Claim 7
Dependent Claim
28 words
A luminescent ink for printing according to claim 5 , wherein the organic luminescent polymer is selected from poly(vinyl carbazole), poly(9,9′-dialkylfluorene), poly(phenylene) derivatives, poly(2-silyl-phenylenevinylene), poly(2,5-dialkoxy-phenylenevinylene), and poly(aromatic oxadiazole).
Claim 8
Dependent Claim
27 words
A luminescent ink for printing according to claim 5 , wherein the organic luminescent polymer concentration range is between 0.5 to 40 percent of the solid ingredients.
Claim 9
Dependent Claim
29 words
A luminescent ink for printing according to claim 1 , wherein the functional additive comprises a charge transporting functional additive selected from a hole-transporting material and an electron-transporting material.
Claim 10
Dependent Claim
27 words
A luminescent ink for printing according to claim 8 , wherein the electron-transporting material is selected from organic compounds containing aromatic oxadiazoles, triazoles, quinolines, or combinations thereof.
Claim 11
Dependent Claim
18 words
A luminescent ink for printing according to claim 8 , wherein the hole-transporting material possess electron donating properties.
Claim 12
Dependent Claim
30 words
A luminescent ink for printing according to claim 8 , wherein the hole-transporting material is selected from organic compounds containing aromatic amines, carbazoles, thiophenes, copper phthalocyanine, poly(N-vinyl-carbazole), and polythiophene derivatives.
Claim 13
Dependent Claim
76 words
A luminescent ink for printing according to claim 1 , wherein the functional additive comprises a surfactant with an ionic terminal and alkyl terminal, having the following general formula: MYO 3 R wherein M is Na + , K + , Li + , Mg +2 , or H + ; R is C n H 2n+1 , or OC n H 2n+1 with n ranging from 4 to 40; and Y is S or P.
Claim 14
Dependent Claim
50 words
A luminescent ink for printing according to claim 1 , wherein the functional additive comprises a surfactant having the following general formula: (CH 2 CH 2 O) n (CH 2 CHCH 3 O) m wherein n and m range from 0 to 100 and n+m ranges from 6 to 200.
Claim 15
Dependent Claim
86 words
A luminescent ink for printing according to claim 1 , wherein the functional additive comprises a surfactant with an ionic terminal and alkyl terminal, having the following general formula: MXR 3 R′ wherein M is Na + , K + , Li + , Mg +2 , or H + ; X is Cl − , Br − , I − , SO 4 −2 ; R is alkyl with carbon number below 6, and R′ is a long alkyl C n where n is 6-40.
Claim 16
Dependent Claim
40 words
A luminescent ink for printing according to claim 1 , wherein the functional additive is present in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 5 to 100 cp.
Claim 17
Dependent Claim
31 words
A luminescent ink for printing according to claim 1 , wherein the cross-linking agent has a concentration in the range from about 0.5 to 30 wt. % of the solid ingredients.
Claim 18
Dependent Claim
31 words
A luminescent ink for printing according to claim 1 , wherein the cross-linking agent has a concentration in the range from about 1 to 10 wt. % of the solid ingredients.
Claim 19
Dependent Claim
37 words
A luminescent ink for printing according to claim 1 , wherein the cross-linking agent is selected from organic compounds containing a reactive functional group that undergoes chemical reaction to form insoluble network under irradiation or thermal condition.
Claim 20
Dependent Claim
27 words
A luminescent ink for printing according to claim 18 , wherein the reactive functional group is selected from acrylate, methacrylate, cynamoyl, styrene, vinyl, azide, epoxide, and hydrosilane.
Claim 21
Dependent Claim
28 words
A luminescent ink for printing according to claim 1 , wherein the solvent has a boiling point in the range from about 40° C. to about 200° C.
Claim 22
Dependent Claim
29 words
A luminescent ink for printing according to claim 1 , wherein the solvent is selected from water, methanol, ethanol, isopropanol, butanol, dioxane, toluene, chloroform, tetrahydrofuran, dichlorobenzene, 1,2-dichloroethane, and xylenes.
Claim 23
Dependent Claim
24 words
A luminescent ink for printing according to claim 1 , wherein the luminescent ink contains from about 50% to about 99.8% solvent, by weight.
Claim 24
Dependent Claim
24 words
A luminescent ink for printing according to claim 1 , wherein the luminescent organic compound comprises a luminescent chromophore bound to a binding polymer.
Claim 25
Dependent Claim
20 words
A luminescent ink for printing according to claim 1 , wherein the luminescent organic compound comprises a conjugated luminescent polymer.
Claim 26
Dependent Claim
24 words
A luminescent ink for printing according to claim 1 , wherein the luminescent organic compound comprises a luminescent poly(phenylene vinylene) polymer, or its derivative.
Claim 27
Dependent Claim
20 words
A luminescent ink for printing according to claim 1 , wherein the luminescent organic compound comprises a luminescent polythiophene polymer.
Claim 28
Dependent Claim
20 words
A luminescent ink for printing according to claim 1 , wherein the luminescent organic compound comprises a luminescent polyfluorene polymer.
Claim 29
Independent Claim
112 words
A method of fabricating an organic luminescent device comprising the steps of: obtaining a first electrode surface; printing a luminescent ink onto the first electrode surface to form a first thin film of luminescent material, wherein the luminescent ink comprises: a luminescent organic compound; an inert solvent; a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 5 to 1,000 cp, and/or modify the charge transporting ability of the luminescent ink to a balanced mode; and a cross-linking agent; initiating a cross-linking reaction in the luminescent ink; and coupling a second electrode to the printed film of luminescent material.
Claim 30
Independent Claim
112 words
A method of fabricating an organic luminescent device comprising the steps of: obtaining a first electrode surface; printing a luminescent ink onto the first electrode surface to form a first thin film of luminescent material, wherein the luminescent ink comprises: a luminescent organic compound; an inert solvent; a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 5 to 1,000 cp, and/or modify the charge transporting ability of the luminescent ink to a balanced mode; and a cross-linking agent; initiating a cross-linking reaction in the luminescent ink; and coupling a second electrode to the printed film of luminescent material.
Claim 31
Dependent Claim
29 words
A method of fabricating an organic luminescent device according to claim 28 , wherein the luminescent ink is printed by ink-jet printing, bubble-jet printing, stamp printing, or screen printing.
Claim 32
Dependent Claim
39 words
A method of fabricating an organic luminescent device according to claim 28 , further comprising the step of printing a luminescent ink onto the first thin film of luminescent material to form a second thin film of luminescent material.
Claim 33
Independent Claim
28 words
A method of fabricating an organic luminescent device according to claims 30 , wherein the first thin film and second thin film are printed with different luminescent inks.
Claim 34
Dependent Claim
10 words
An LED fabricated by the method of claim 28 .
Claim 35
Dependent Claim
12 words
A thin film transistor fabricated by the method of claim 28 .
Claim 36
Dependent Claim
101 words
A photovoltaic solar cell fabricated by the method comprising the steps of: obtaining a first electrode surface; printing a luminescent ink onto the first electrode surface to form a first thin film of luminescent material, wherein the luminescent ink comprises: a luminescent organic compound; an inert solvent; and a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 5 to 1,000 cp, and/or modify the charge transporting ability of the luminescent ink to a balanced mode; and coupling a second electrode to the printed film of luminescent material.
Claim 37
Dependent Claim
101 words
A photovoltaic solar cell fabricated by the method comprising the steps of: obtaining a first electrode surface; printing a luminescent ink onto the first electrode surface to form a first thin film of luminescent material, wherein the luminescent ink comprises: a luminescent organic compound; an inert solvent; and a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 5 to 1,000 cp, and/or modify the charge transporting ability of the luminescent ink to a balanced mode; and coupling a second electrode to the printed film of luminescent material.
Claim 38
Dependent Claim
12 words
An electrochromic display device fabricated by the method of claim 28 .
Claim 39
Dependent Claim
14 words
An electroluminescent device for flat-panel display fabricated by the method of claim 28 .
Claim 40
Dependent Claim
131 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound selected from luminescent chromophores bound to a binding polymer and conjugated luminescent polymers; an inert solvent, wherein the solvent has a boiling point in the range from about 40° C. to about 200° C., and wherein the luminescent ink contains from about 50% to about 99.8% solvent, by weight; a functional additive having charge transporting, luminescent, or surfactant properties, said functional additive having a concentration in the luminescent ink in the range from 0.5 to 40 percent of the solid ingredients sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties; and a cross-linking agent.
Claim 41
Dependent Claim
131 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound selected from luminescent chromophores bound to a binding polymer and conjugated luminescent polymers; an inert solvent, wherein the solvent has a boiling point in the range from about 40° C. to about 200° C., and wherein the luminescent ink contains from about 50% to about 99.8% solvent, by weight; a functional additive having charge transporting, luminescent, or surfactant properties, said functional additive having a concentration in the luminescent ink in the range from 0.5 to 40 percent of the solid ingredients sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties; and a cross-linking agent.
Claim 42
Dependent Claim
27 words
A luminescent ink for printing according to claim 37 , wherein the functional additive comprises an organic luminescent molecule having a molecular weight less than 5000 g/mol.
Claim 43
Dependent Claim
27 words
A luminescent ink for printing according to claim 38 , wherein the organic luminescent molecule is selected from anthracene, tris(8-hydroxy quinoline) aluminum, 4,4′-N,N′-dicarbazole-biphenyl, distyrylbenzene, 3-(2-benzothiazolyl)-7-(diethylamino)-coumarin, and rubrene.
Claim 44
Dependent Claim
27 words
A luminescent ink for printing according to claim 37 , wherein the functional additive comprises an organic luminescent polymer having a molecular weight larger than 5000 g/mol.
Claim 45
Dependent Claim
28 words
A luminescent ink for printing according to claim 40 , wherein the organic luminescent polymer is selected from poly(vinyl carbazole), poly(9,9′-dialkylfluorene), poly(phenylene) derivatives, poly(2-silyl-phenylenevinylene), poly(2,5-dialkoxy-phenylenevinylene), and poly(aromatic oxadiazole).
Claim 46
Dependent Claim
30 words
A luminescent ink for printing according to claim 37 , wherein the functional additive comprises an electron-transporting molecule selected from organic compounds containing aromatic oxadiazoles, triazoles, quinolines, or combinations thereof.
Claim 47
Dependent Claim
33 words
A luminescent ink for printing according to claim 37 , wherein the functional additive comprises a hole-transporting molecule selected from organic compounds containing aromatic amines, carbazoles, thiophenes, copper phthalocyanine, poly(N-vinyl-carbazole), and polythiophene derivatives.
Claim 48
Dependent Claim
76 words
A luminescent ink for printing according to claim 37 , wherein the functional additive comprises a surfactant with an ionic terminal and alkyl terminal, having the following general formula: MYO 3 R wherein M is Na + , K + , Li + , Mg +2 , or H + ; R is C n H 2n+1 , or OC n H 2n+1 with n ranging from 4 to 40; and Y is S or P.
Claim 49
Dependent Claim
50 words
A luminescent ink for printing according to claim 37 , wherein the functional additive comprises a surfactant having the following general formula: (CH 2 CH 2 O) n (CH 2 CHCH 3 O) m wherein n and m range from 0 to 100 and n+m ranges from 6 to 200.
Claim 50
Dependent Claim
86 words
A luminescent ink for printing according to claim 37 , wherein the functional additive comprises a surfactant with an ionic terminal and alkyl terminal, having the following general formula: MXR 3 R′ wherein M is Na + , K + , Li + , Mg +2 , or H + ; X is Cl − , Br − , I − , SO 4 −2 ; R is alkyl with carbon number below 6, and R′ is a long alkyl C n where n is 6-40.
Claim 51
Dependent Claim
40 words
A luminescent ink for printing according to claim 37 , wherein the functional additive is present in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 5 to 100 cp.
Claim 52
Dependent Claim
31 words
A luminescent ink for printing according to claim 37 , wherein the cross-linking agent has a concentration in the range from about 0.5 to 30 wt. % of the solid ingredients.
Claim 53
Dependent Claim
31 words
A luminescent ink for printing according to claim 37 , wherein the cross-linking agent has a concentration in the range from about 1 to 10 wt. % of the solid ingredients.
Claim 54
Dependent Claim
37 words
A luminescent ink for printing according to claim 37 , wherein the cross-linking agent is selected from organic compounds containing a reactive functional group that undergoes chemical reaction to form insoluble network under irradiation or thermal condition.
Claim 55
Dependent Claim
27 words
A luminescent ink for printing according to claim 50 , wherein the reactive functional group is selected from acrylate, methacrylate, cynamoyl, styrene, vinyl, azide, epoxide, and hydrosilane.
Claim 56
Dependent Claim
29 words
A luminescent ink for printing according to claim 37 , wherein the solvent is selected from water, methanol, ethanol, isopropanol, butanol, dioxane, toluene, chloroform, tetrahydrofuran, dichlorobenzene, 1,2-dichloroethane, and xylenes.
Claim 57
Dependent Claim
24 words
A luminescent ink for printing according to claim 37 , wherein the luminescent organic compound comprises a luminescent poly(phenylene vinylene) polymer, or its derivative.
Claim 58
Dependent Claim
20 words
A luminescent ink for printing according to claim 37 , wherein the luminescent organic compound comprises a luminescent polythiophene polymer.
Claim 59
Dependent Claim
20 words
A luminescent ink for printing according to claim 37 , wherein the luminescent organic compound comprises a luminescent polyfluorene polymer.
Claim 60
Dependent Claim
86 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound; an inert solvent; and a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties, wherein the functional additive comprises an organic luminescent molecule having a molecular weight less than 5000 g/mol and a concentration range between 0.5 to 40 percent of the solid ingredients.
Claim 61
Dependent Claim
86 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound; an inert solvent; and a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties, wherein the functional additive comprises an organic luminescent molecule having a molecular weight less than 5000 g/mol and a concentration range between 0.5 to 40 percent of the solid ingredients.
Claim 62
Dependent Claim
26 words
A luminescent ink for printing according to claim 56 wherein the organic luminescent molecule is selected from anthracene, tris(8-hydroxy quinoline) aluminum, 4,4′-N,N′-dicarbazole-biphenyl, distyrylbenzene, 3-(2-benzothiazolyl)-7-(diethylamino)-coumarin, and rubrene.
Claim 63
Dependent Claim
30 words
A luminescent ink for printing according to claim 56 , wherein the functional additive further comprises a charge transporting functional additive selected from a hole-transporting material and an electron-transporting material.
Claim 64
Dependent Claim
27 words
A luminescent ink for printing according to claim 58 , wherein the electron-transporting material is selected from organic compounds containing aromatic oxadiazoles, triazoles, quinolines, or combinations thereof.
Claim 65
Dependent Claim
30 words
A luminescent ink for printing according to claim 58 , wherein the hole-transporting material is selected from organic compounds containing aromatic amines, carbazoles, thiophenes, copper phthalocyanine, poly(N-vinyl-carbazole), and polythiophene derivatives.
Claim 66
Dependent Claim
77 words
A luminescent ink for printing according to claim 56 , wherein the functional additive further comprises a surfactant with an ionic terminal and alkyl terminal, having the following general formula: MYO 3 R wherein M is Na + , K + , Li + , Mg +2 , or H + ; R is C n H 2n+1 , or OC n H 2n+1 with n ranging from 4 to 40 and Y is S or P.
Claim 67
Dependent Claim
51 words
A luminescent ink for printing according to claim 56 , wherein the functional additive further comprises a surfactant having the following general formula: (CH 2 CH 2 O) n (CH 2 CHCH 3 O) m wherein n and m range from 0 to 100 and n+m ranges from 6 to 200.
Claim 68
Dependent Claim
85 words
A luminescent ink for printing according to claim 56 , wherein the functional additive comprises a surfactant with an ionic terminal and alkyl terminal, having the following general formula: MXR 3 R′ wherein M is Na + , K + , Li + , Mg +2 , or H + ; X is Cl − , Br − I − , SO 4 −2 ; R is alkyl with carbon number below 6, and R′ is a long alkyl C n where n is 6-40.
Claim 69
Dependent Claim
40 words
A luminescent ink for printing according to claim 56 , wherein the functional additive is present in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 5 to 100 cp.
Claim 70
Dependent Claim
15 words
A luminescent ink for printing according to claim 56 , further comprising a cross-linking agent.
Claim 71
Dependent Claim
31 words
A luminescent ink for printing according to claim 65 , wherein the cross-linking agent has a concentration in the range from about 0.5 to 30 wt. % of the solid ingredients.
Claim 72
Dependent Claim
31 words
A luminescent ink for printing according to claim 65 , wherein the cross-linking agent has a concentration in the range from about 1 to 10 wt. % of the solid ingredients.
Claim 73
Dependent Claim
28 words
A luminescent ink for printing according to claim 56 , wherein the solvent has a boiling point in the range from about 40° C. to about 200° C.
Claim 74
Dependent Claim
28 words
A luminescent ink for printing according to claim 56 , wherein the-solvent is selected from water, methanol, ethanol, isopropanol, butanol, dioxane, toluene, chloroform, tetrahydrofuran, dichlorobenzene, 1,2-dichloroethane, and xylenes.
Claim 75
Dependent Claim
24 words
A luminescent ink for printing according to claim 56 , wherein the luminescent ink contains from about 50% to about 99.8% solvent, by weight.
Claim 76
Dependent Claim
24 words
A luminescent ink for printing according to claim 56 , wherein the luminescent organic compound comprises a luminescent chromophore bound to a binding polymer.
Claim 77
Dependent Claim
20 words
A luminescent ink for printing according to claim 56 , wherein the luminescent organic compound comprises a conjugated luminescent polymer.
Claim 78
Dependent Claim
24 words
A luminescent ink for printing according to claim 56 , wherein the luminescent organic compound comprises a luminescent poly(phenylene vinylene) polymer, or its derivative.
Claim 79
Dependent Claim
20 words
A luminescent ink for printing according to claim 56 , wherein the luminescent organic compound comprises a luminescent polythiophene polymer.
Claim 80
Dependent Claim
20 words
A luminescent ink for printing according to claim 56 , wherein the luminescent organic compound comprises a luminescent polyfluorene polymer.
Claim 81
Dependent Claim
64 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound; an inert solvent; and a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties, wherein the functional additive comprises an electron-transporting material.
Claim 82
Dependent Claim
64 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound; an inert solvent; and a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties, wherein the functional additive comprises an electron-transporting material.
Claim 83
Dependent Claim
77 words
A luminescent ink for printing according to claim 76 , wherein the functional additive further comprises a surfactant with an ionic terminal and alkyl terminal, having the following general formula: MYO 3 R wherein M is Na + , K + , Li + , Mg +2 , or H + ; R is C n H 2n+1 , or OC n H 2n+1 with n ranging from 4 to 40; and Y is S or P.
Claim 84
Dependent Claim
51 words
A luminescent ink for printing according to claim 76 , wherein the functional additive further comprises a surfactant having the following general formula: (CH 2 CH 2 O) n (CH 2 CHCH 3 O) m wherein n and m range from 0 to 100 and n+m ranges from 6 to 200.
Claim 85
Dependent Claim
86 words
A luminescent ink for printing according to claim 76 , wherein the functional additive comprises a surfactant with an ionic terminal and alkyl terminal, having the following general formula: MXR 3 R′ wherein M is Na + , K + , Li + , Mg +2 , or H + ; X is Cl − , Br − , I − , SO 4 −2 ; R is alkyl with carbon number below 6, and R′ is a long alkyl C n where n is 6-40.
Claim 86
Dependent Claim
40 words
A luminescent ink for printing according to claim 76 , wherein the functional additive is present in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 5 to 100 cp.
Claim 87
Dependent Claim
15 words
A luminescent ink for printing according to claim 76 , further comprising a cross-linking agent.
Claim 88
Dependent Claim
31 words
A luminescent ink for printing according to claim 81 , wherein the cross-linking agent has a concentration in the range from about 0.5 to 30 wt. % of the solid ingredients.
Claim 89
Dependent Claim
31 words
A luminescent ink for printing according to claim 81 , wherein the cross-linking agent has a concentration in the range from about 1 to 10 wt. % of the solid ingredients.
Claim 90
Dependent Claim
28 words
A luminescent ink for printing according to claim 76 , wherein the solvent has a boiling point in the range from about 40° C. to about 200° C.
Claim 91
Dependent Claim
29 words
A luminescent ink for printing according to claim 76 , wherein the solvent is selected from water, methanol, ethanol, isopropanol, butanol, dioxane, toluene, chloroform, tetrahydrofuran, dichlorobenzene, 1,2-dichloroethane, and xylenes.
Claim 92
Dependent Claim
24 words
A luminescent ink for printing according to claim 76 , wherein the luminescent ink contains from about 50% to about 99.8% solvent, by weight.
Claim 93
Dependent Claim
24 words
A luminescent ink for printing according to claim 76 , wherein the luminescent organic compound comprises a luminescent chromophore bound to a binding polymer.
Claim 94
Dependent Claim
20 words
A luminescent ink for printing according to claim 76 , wherein the luminescent organic compound comprises a conjugated luminescent polymer.
Claim 95
Dependent Claim
24 words
A luminescent ink for printing according to claim 76 , wherein the luminescent organic compound comprises a luminescent poly(phenylene vinylene) polymer, or its derivative.
Claim 96
Dependent Claim
20 words
A luminescent ink for printing according to claim 76 , wherein the luminescent organic compound comprises a luminescent polythiophene polymer.
Claim 97
Dependent Claim
20 words
A luminescent ink for printing according to claim 76 , wherein the luminescent organic compound comprises a luminescent polyfluorene polymer.
Claim 98
Dependent Claim
27 words
A luminescent ink for printing according to claim 76 , wherein the electron-transporting material is selected from organic compounds containing aromatic oxadiazoles, triazoles, quinolines, or combinations thereof.
Claim 99
Dependent Claim
69 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound; an inert solvent; and a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties, wherein the functional additive comprises a dopant that promotes excited energy state transfer.
Claim 100
Dependent Claim
69 words
A luminescent ink for printing of organic luminescent devices comprising: a luminescent organic compound; an inert solvent; and a functional additive in an amount sufficient to modify the viscosity of the luminescent ink to a viscosity in the range from about 3 to 90,000 cp, and in an amount to modulate optical and charge transporting properties, wherein the functional additive comprises a dopant that promotes excited energy state transfer.
Claim 101
Dependent Claim
24 words
A luminescent ink for printing according to claim 93 , wherein the dopant promotes the transition of triplet excited state to singlet excited state.
Claim 102
Dependent Claim
26 words
A luminescent ink for printing according to claim 93 , wherein the luminescent ink contains the dopant in an amount from 0.01 to 15%, by weight.
Claim 103
Dependent Claim
26 words
A luminescent ink for printing according to claim 93 , wherein the luminescent ink contains the dopant in an amount from 0.1 to 8%, by weight.
Claim 104
Dependent Claim
26 words
A luminescent ink for printing according to claim 93 , wherein the luminescent ink contains the dopant in an amount from 0.5 to 5%, by weight.
Claim 105
Dependent Claim
18 words
A luminescent ink for printing according to claim 93 , wherein the dopant is a heavy metal porphyrin.
Claim 106
Dependent Claim
26 words
A luminescent ink for printing according to claim 95 , wherein the dopant is selected from red phosphor 2,3,7,8,12,13,17,18-octaethyl-21H, 23H-porphorine platinum and green phosphor tris(2-phenylpyridine) iridium.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-04-15 | 2005-10-15 | 2006-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-15 | 2009-10-15 | 2010-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-15 | 2013-10-15 | 2014-04-16 | $7700.00 | Window Closed / Lapsed |