EP0549345A2
Expired / Lapsed
EP
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EL element comprising organic thin film
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1992-12-23
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Granted: —
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Expires: 2012-12-23
Abstract
Abstract Herein disclosed are organic thin film EL element having layer structures each of which comprises at least one organic thin film (4) sandwiched between two electrodes (2,3), at least one of which is a metal thin film (3) or one of which is a metal thin film (3) and the other of which is a transparent conductive inorganic thin film (2), and an optional thin film (7) of an inorganic semiconductor positioned between the transparent conductive thin film (3) and the organic thin film (4), wherein an interfacial layer (7) is fromed between the organic thin film (4) and the metal thin film (3) adjacent to the organic thin film (4) by treating the organic thin film (4) and/or the metal thin film (3) with an organic phosphorus atom-containing compound; and/or wherein an interfacial layer is formed between the organic thin film (4) and the inorganic thin film (2) adjacent to the organic thin film (4) by treating the organic thin film (4) and/or the inorganic thin film (2) with a silane-coupling agent. In the EL element, the metal thin film (3) formed on the organic thin film (4) has low unevenness, the metal thin film (3) is strongly adhered to the organic thin film (4).
Inventors
- 👤 Yutaka Ohashi
- 👤 Nobuhiro Fukuda
- 👤 Atsuhiko Nitta
- 👤 Sadao Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 22:21
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/10; H10; H10K; H10K50/00; H10K50/80; H10K50/805; H10K50/81; H10K50/82; H10K50/10; H10K50/17; H10K50/171; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
75 words
An organic thin film EL element having a layer structure which comprises at least one organic thin film sandwiched between two electrodes, at least one of which is a metal thin film, wherein an interfacial layer is formed between the organic thin film and the metal thin film adjacent to the organic thin film by treating at least one of the organic thin film and the metal thin film with an organic phosphorus atom-containing compound.
Claim 2
Dependent Claim
31 words
The organic thin film EL element according to claim 1 wherein one of the electrodes comprises a metal thin film and the other electrode comprises a transparent conductive inorganic thin film.
Claim 3
Dependent Claim
38 words
The organic thin film EL element according to claim 1 wherein the organic thin film comprises two layers, one of which is a luminous organic thin film and the other of which is a hole-transport organic thin film.
Claim 4
Dependent Claim
38 words
The organic thin film EL element according to claim 1 wherein the organic phosphorus atom-containing compound is a member selected from the group consisting of phosphoric acid esters, acidic phosphoric acid esters, phosphorous acid esters and organic phosphines.
Claim 5
Dependent Claim
28 words
The organic thin film EL element according to claim 1 wherein the thickness of the interfacial layer ranges from the thickness of a monomolecular layer to 100Å .
Claim 6
Dependent Claim
102 words
An organic thin film EL element having a layer structure which comprises at least one organic thin film sandwiched between two electrodes, one of which is a metal thin film and the other of which is a inorganic thin film, and an optional thin film of an inorganic semiconductor positioned between the transparent conductive thin film and the organic thin film, wherein an interfacial layer is formed between the organic thin film and the inorganic thin film adjacent to the organic thin film by treating at least one of the organic thin film and the inorganic thin film with a silane-coupling agent.
Claim 7
Dependent Claim
28 words
The organic thin film EL element according to claim 6 wherein the inorganic thin film adjacent to the organic thin film is a transparent conductive inorganic thin film.
Claim 8
Dependent Claim
27 words
The organic thin film EL element according to claim 6 wherein the inorganic thin film adjacent to the organic thin film is an inorganic semiconductor thin film.
Claim 9
Dependent Claim
48 words
The organic thin film EL element according to claim 6 wherein the silane-coupling agent is a compound represented by the following general formula (1): X-Si(OR)₃ (1) wherein X is an amino, vinyl, epoxy or mercapto group or a halogen atom; and R is a methyl or ethyl group.
Claim 10
Dependent Claim
28 words
The organic thin film EL element according to claim 6 wherein the thickness of the interfacial layer ranges from the thickness of a monomolecular layer to 100Å .
Claim 11
Dependent Claim
149 words
An organic thin film EL element having a layer structure which comprises at least one organic thin film sandwiched between two electrodes, one of which is a metal thin film and the other of which is a transparent conductive inorganic thin film, and an optional thin film of an inorganic semiconductor positioned between the transparent conductive thin film and the organic thin film, wherein a first interfacial layer is formed between the organic thin film and the metal thin film adjacent to the organic thin film by treating at least one of the organic thin film and the metal thin film with an organic phosphorus atom-containing compound and a second interfacial layer is formed between the organic thin film and the inorganic thin film adjacent to the organic thin film by treating at least one of the organic thin film and the inorganic thin film with a silane-coupling agent.
Claim 12
Dependent Claim
31 words
The organic thin film EL element according to claim 11 wherein one of the electrodes comprises a metal thin film and the other electrode comprises a transparent conductive inorganic thin film.
Claim 13
Dependent Claim
38 words
The organic thin film EL element according to claim 11 wherein the organic thin film comprises two layers, one of which is a luminous organic thin film and the other of which is a hole-transport organic thin film.
Claim 14
Dependent Claim
38 words
The organic thin film EL element according to claim 11 wherein the organic phosphorus atom-containing compound is a member selected from the group consisting of phosphoric acid esters, acidic phosphoric acid esters, phosphorous acid esters and organic phosphines.
Claim 15
Dependent Claim
28 words
The organic thin film EL element according to claim 11 wherein the inorganic thin film adjacent to the organic thin film is a transparent conductive inorganic thin film.
Claim 16
Dependent Claim
27 words
The organic thin film EL element according to claim 11 wherein the inorganic thin film adjacent to the organic thin film is an inorganic semiconductor thin film.
Claim 17
Dependent Claim
48 words
The organic thin film EL element according to claim 11 wherein the silane-coupling agent is a compound represented by the following general formula (1): X-Si(OR)₃ (1) wherein X is an amino, vinyl, epoxy or mercapto group or a halogen atom; and R is a methyl or ethyl group.
Claim 18
Dependent Claim
29 words
The organic thin film EL element according to claim 11 wherein the thickness of the interfacial layer ranges from the thickness of a monomolecular layer to 100 Å .
References Cited (Backward Citations)
No citation records indexed.
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