EP0449125A2
Expired / Lapsed
EP
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Thin film electroluminescence device and process for production thereof
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1991-03-22
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Granted: —
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Expires: 2011-03-22
Abstract
Abstract A thin film electroluminescence device and a process for production thereof. This device is characterized in that as a light emitting layer material or charge injection layer material, a polymer film having at least one of a light emitting layer function, a charge transport function and a charge injection function, and having a film thickness of not more than 0.5 µm is prepared by the vacuum evaporation method and used.
Inventors
- 👤 Chishio C/O Idemitsu Kosan Co. Ltd. Hosokawa
- 👤 Hisahiro C/O Idemitsu Kosan Co. Ltd. Higashi
- 👤 Tadashi C/O Idemitsu Kosan Co. Ltd. Kusumoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 16:20
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; H; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B33/00; H05B33/10; H05B33/12; H05B33/14; H10; H10K; H10K71/00; H10K71/20; H10K71/231; H10K71/233; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
A thin film electroluminescence device characterized by using, as a light emitting layer material or charge injection layer material, a polymer thin film having at least one function of an electroluminescence light emitting layer function, a charge transport function and a charge injection function, and having a film thickness of not more than 0.5 µm, and said polymer thin film being prepared by vacuum evaporation method.
Claim 2
Dependent Claim
43 words
The device as claimed in Claim 1 wherein the vacuum evaporation method is vacuum deposition polymerization method comprising depositing a monomer having at least one of a charge injection function, a charge transport function and light emitting function, and then polymerizing the monomer.
Claim 3
Dependent Claim
27 words
The device as claimed in Claim 1 wherein luminance of the device with said polymer thin film as the light emitting layer is at least 10 cd/m².
Claim 4
Dependent Claim
21 words
The device as claimed in Claim 1 wherein said polymer thin film is used as charge injection or charge transport layer.
Claim 5
Dependent Claim
14 words
The device as claimed in Claim 1 wherein the polymer thin film is polyimide.
Claim 6
Dependent Claim
14 words
The device as claimed in Claim 4 wherein the polymer thin film is polyimide.
Claim 7
Dependent Claim
58 words
The device as claimed in Claim 5 wherein the polyimide is represented by the general formula: wherein X is an organic group containing an aromatic group, Y is an organic group having at least one of a charge injection function, a charge transport function and light emitting function and n is an integer indicating a degree of polymerization.
Claim 8
Dependent Claim
58 words
The device as claimed in Claim 6 wherein the polyimide is represented by the general formula: wherein X is an organic group containing an aromatic group, Y is an organic group having at least one of a charge injection function, a charge transport function and light emitting function and n is an integer indicating a degree of polymerization.
Claim 9
Dependent Claim
117 words
A process for producing an organic thin film electroluminescence device which comprises performing (1) a step of forming an electrode on a substrate, (2) a step of forming a charge transport layer, (3) a step of forming a light emitting layer and (4) a step of forming the opposite electrode, singly or repeatedly, wherein as a step of forming a light emitting layer or charge transport layer having at least one of a charge injection function, a charge transport function and a light emitting layer function necessary for electroluminescence, a step of forming the light emitting layer or charge transport layer by vacuum depositing a heat resistant polymer forming monomer and then polymerizing the monomer is included.
Claim 10
Dependent Claim
51 words
The process as claimed in Claim 9, including a step in which the heat resistant polymer forming monomer having the electroluminescence light emitting layer function is vacuum deposited and then the monomer is polymerized to form a light emitting layer and, thereafter, the light emitting layer is subjected to patterning treatment.
Claim 11
Dependent Claim
64 words
The process as claimed in Claim 9, including a step in which the heat resistant polymer forming monomer having the electroluminescence light emitting layer function is vacuum deposited and a polymer layer formed while polymerizing the monomer to an extent which is possible for photoetching is subjected to patterning treatment by photoetching and, thereafter, polymerization is completed to form a patterned light emitting layer.
References Cited (Backward Citations)
No citation records indexed.
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