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EP0892028A2
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Composition for an organic el element and method of manufacturing the organic el element
Assignee: Seiko Epson Corp
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Filing: 1998-07-14
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Granted: —
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Expires: 2018-07-14
Abstract
Abstract A composition for an organic EL element which can form a high precision pattern in a simple manner and in a short time and a method of manufacturing the organic EL element are disclosed. By using the composition, optimum film design and luminescence characteristic can be easily obtained, and an adjustment of a luminescence efficiency can also be easily performed. The composition for an organic EL element comprises a precursor of a conjugated organic polymer compound for forming at least one luminescent layer (106), (107), (108) having a certain color and at least one kind of fluorescent dye for changing the luminescence characteristic of the luminescent layer. The luminescent layer is made from a pattern formed by an ink-jet method. As for the precursor, a precursor of PPV, PPV derivative or the like is preferably used. Further, it is preferable that the composition for the organic EL element satisfies at least one of the conditions including a contact angle of 30 to 170degrees with respect to a nozzle surface of a nozzle provided in a head of an ink-jet device used for the ink-jet method for discharging the composition, a viscosity of 1 to 20cp and a surface tension of 20 to 70dyne/cm.
Inventors
- 👤 Hiroshi Kiguchi
- 👤 Sadao Kanbe
- 👤 Shunichi Seki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 23:19
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; E; E01; E01D; E01D19/00; E01D19/10; E01D19/106; C; C09; C09K; C09K11/00; C09K11/06; E01D22/00; H05B33/10; H10; H10K; H10K50/00; H10K50/10; H10K50/11; H10K71/00; H10K71/10; H10K71/12; H10K71/13; H10K71/135; C09K2211/00; C09K2211/14; C09K2211/1408; C09K2211/1425; H10K59/00; H10K59/10; H10K59/17; H10K59/173; H10K85/00; H10K85/10; H10K85/111; H10K85/114; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
51 words
A composition for an organic EL element for forming at
least one luminescent layer having a certain color, said
composition comprising; a precursor of a conjugated organic polymer compound for
forming said luminescent layer; and at least one kind of fluorescent dye for changing the
luminescence characteristic of the luminescent layer.
Claim 2
Dependent Claim
31 words
The composition for an organic EL element as claimed in
claim 1, wherein said luminescent layer is formed from a pattern
of the composition which is formed by an ink-jet method.
Claim 3
Dependent Claim
23 words
The composition for an organic EL element as claimed in
claim 1, wherein the luminescence characteristic is a maximum
wavelength of light absorption.
Claim 4
Dependent Claim
26 words
The composition for an organic EL element as claimed in
claim 1, wherein the conjugated organic polymer compound is a
hole injection and transfer type material.
Claim 5
Dependent Claim
26 words
The composition for an organic EL element as claimed in
claim 1, wherein the precursor of the conjugated organic polymer
compound includes a polyallylene vinylene precursor.
Claim 6
Dependent Claim
33 words
The composition for an organic EL element as claimed in
claim 5, wherein the precursor of the conjugated organic polymer
compound includes a precursor of a polyparaphenylene vinylene or
a polyparaphenylene vinylene derivative.
Claim 7
Dependent Claim
21 words
The composition for an organic EL element as claimed in
claim 1, wherein the fluorescent dye includes rhodamine or
rhodamine derivative.
Claim 8
Dependent Claim
21 words
The composition for an organic EL element as claimed in
claim 1, wherein the fluorescent dye includes distyrylbiphenyl or
distyrylbiphenyl derivative.
Claim 9
Dependent Claim
21 words
The composition for an organic EL element as claimed in
claim 1, wherein the fluorescent dye includes coumarin or
coumarin derivative.
Claim 10
Dependent Claim
22 words
The composition for an organic EL element as claimed in
claim 1, wherein the fluorescent dye includes
tetraphenylbutadiene (TPB) or tetraphenylbutadiene derivative.
Claim 11
Dependent Claim
21 words
The composition for an organic EL element as claimed in
claim 1, wherein the fluorescent dye includes quinacridone or
quinacridone derivative.
Claim 12
Dependent Claim
38 words
The composition for an organic EL element as claimed in
claim 1, wherein the precursor of the conjugated organic polymer
compound and the fluorescent dye exist in the state of being
dissolved or dispersed into a polar solvent.
Claim 13
Dependent Claim
41 words
The composition for an organic EL element as claimed in
claim 1, wherein the amount of the fluorescent dye to be added is
0.5 to 10wt% with respect to a solid component of the precursor
of the conjugated organic polymer compound.
Claim 14
Dependent Claim
28 words
The composition for an organic EL element as claimed in
claim 1, wherein the composition contains a wetting agent for
preventing the composition from being dried and solidified.
Claim 15
Dependent Claim
54 words
The composition for an organic EL element as claimed in
claim 2, wherein a contact angle with respect to a material
constituting a nozzle surface of a nozzle provided in a head of
an ink-jet device used for the ink-jet method for discharging the
composition lies in the range of 30 to 170 degrees.
Claim 16
Dependent Claim
27 words
The composition for the organic EL element as claimed in
claim 1, wherein a viscosity of the composition for the organic
EL element is 1 to 20cp.
Claim 17
Dependent Claim
28 words
The composition for the organic EL element as claimed in
claim 1, wherein a surface tension of the composition for the
organic EL element is 20 to 70dyne/cm.
Claim 18
Independent Claim
61 words
A method of manufacturing an organic EL element, comprising
the steps of: coating a pattern by discharging a composition for an
organic EL element containing a precursor of a conjugated organic
polymer compound from a head by an ink-jet method; and forming at least one luminescent layer for a certain color
by conjugating the precursor of the conjugated organic polymer
compound.
Claim 19
Dependent Claim
34 words
The method of manufacturing the organic EL element as
claimed in claim 18, wherein the composition further comprises at
least one kind of luminescent dye for changing a luminescence
characteristic of the luminescent layer.
Claim 20
Dependent Claim
24 words
The method of manufacturing the organic EL element as
claimed in claim 19, wherein the luminescence characteristic is a
maximum wavelength of light absorption.
Claim 21
Dependent Claim
27 words
The method of manufacturing the organic EL element as
claimed in claim 18, wherein the conjugated organic polymer
compound is a hole injection and transfer type material.
Claim 22
Dependent Claim
29 words
The method of manufacturing the organic EL element as
claimed in claim 18, wherein the precursor of the conjugated
organic polymer compound includes a precursor of a polyallylene
vinylene.
Claim 23
Dependent Claim
32 words
The method of manufacturing the organic EL element as
claimed in claim 22, wherein the precursor of the polyallylene
vinylene includes a precursor of a polyparaphenylene vinylene or
a polyparaphenylene vinylene derivative.
Claim 24
Independent Claim
25 words
The method of manufacturing the organic EL element as
claimed in any one of claims 19, wherein the fluorescent dye
includes rhodamine or rhodamine derivative.
Claim 25
Dependent Claim
22 words
The method of manufacturing the organic EL element as
claimed in claim 19, wherein the fluorescent dye includes
distyrylbiphenyl or distyrylbiphenyl derivative.
Claim 26
Dependent Claim
22 words
The method of manufacturing the organic EL element as
claimed in claim 19, wherein the fluorescent dye includes
coumarin or coumarin derivative.
Claim 27
Dependent Claim
23 words
The method of manufacturing the organic EL element as
claimed in claim 19, wherein the fluorescent dye includes
tetraphenylbutadiene (TPB) or tetraphenylbutadiene derivative.
Claim 28
Dependent Claim
22 words
The method of manufacturing the organic EL element as
claimed in claim 19, wherein the fluorescent dye includes
quinacridone or quinacridone derivative.
Claim 29
Dependent Claim
49 words
The method of manufacturing the organic EL element as
claimed in claim 18, wherein a contact angle with respect to a
material constituting a nozzle surface of a nozzle of a device
used for the ink-jet method for discharging the composition lies
in the rage of 30 to 170degrees.
Claim 30
Dependent Claim
28 words
The method of manufacturing the organic EL element as
claimed in claim 18, wherein a viscosity of the composition for
the organic EL element is 1 to 20cp.
Claim 31
Independent Claim
28 words
The method of manufacturing the organic EL element as
claimed in 18, wherein a surface tension of the composition for
the organic EL element is 20 to 70dyne/cm.
References Cited (Backward Citations)
No citation records indexed.
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