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US5643685A
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Thin film electroluminescence element and process for producing the same
Assignee: Fujifilm Business Innovation Corp
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Filing: 1994-10-19
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Granted: 1997-07-01
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Expires: 2014-10-19
Abstract
Abstract An electroluminescence element composed of a substrate, a first electrode, a first insulating layer, a light-emitting layer, a second insulating layer, and a second electrode in this order and a process for producing the same are disclosed, in which the light-emitting layer comprises a chemically stable oxide material containing a plurality of elements, the composition ratio of the elements constituting said oxide material being substantially equal to that of the elements charged, the light-emitting layer is formed by coating a first insulating layer with a sol solution containing a plurality of metal elements at a prescribed composition ratio and heating the coating layer to form an oxide layer.
Inventors
- 👤 Kaoru Torikoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:10
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/59; C09K11/592; C09K11/595; H; H05; H05B; H05B33/00; H05B33/10; H05B33/12; H05B33/14; H05B33/22; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
116 words
An electroluminescence element composed of a substrate, a first electrode, a first insulating layer, a light-emitting layer, a second insulating layer, and a second electrode in this order, wherein said light-emitting layer comprises an oxide material containing a plurality of elements which is obtained by applying a coating of a solution of organic metal compounds, said organic metal compounds containing an element acting as a luminescence center, and heating the coating, the composition ratio of the elements constituting said oxide material being substantially equal to the ratio among the same elements present in the materials used to form the oxide material, wherein said oxide material forms a matrix for the element acting as a luminescence center.
Claim 2
Dependent Claim
116 words
An electroluminescence element composed of a substrate, a first electrode, a first insulating layer, a light-emitting layer, a second insulating layer, and a second electrode in this order, wherein said light-emitting layer comprises an oxide material containing a plurality of elements which is obtained by applying a coating of a solution of organic metal compounds, said organic metal compounds containing an element acting as a luminescence center, and heating the coating, the composition ratio of the elements constituting said oxide material being substantially equal to the ratio among the same elements present in the materials used to form the oxide material, wherein said oxide material forms a matrix for the element acting as a luminescence center.
Claim 3
Dependent Claim
18 words
An electroluminescence element as claimed in claim 1, wherein said oxide material is Zn 2 SiO 4 :Mn.
Claim 4
Dependent Claim
22 words
An electroluminescence element as claimed in claim 1, wherein said first insulating layer and said second insulating layer comprise SiO 2 .
Claim 5
Dependent Claim
135 words
A process for producing an electroluminescence element comprising the step of dissolving a compound of an element acting as a luminescence center and one or more of organic metal compounds having different metallic elements in a solvent to prepare a hydrolyzable sol solution having a prescribed composition ratio of the metallic elements, the step of applying said sol solution to a first insulating layer of a substrate having formed thereon a first electrode and a first insulating layer in this order to form a coating layer, the step of heating said coating layer to form an oxide film of a light-emitting layer having a composition ratio of metallic elements substantially equal to that of the sol solution, and the step of successively forming a second insulating layer and a second electrode on said oxide film.
Claim 6
Dependent Claim
135 words
A process for producing an electroluminescence element comprising the step of dissolving a compound of an element acting as a luminescence center and one or more of organic metal compounds having different metallic elements in a solvent to prepare a hydrolyzable sol solution having a prescribed composition ratio of the metallic elements, the step of applying said sol solution to a first insulating layer of a substrate having formed thereon a first electrode and a first insulating layer in this order to form a coating layer, the step of heating said coating layer to form an oxide film of a light-emitting layer having a composition ratio of metallic elements substantially equal to that of the sol solution, and the step of successively forming a second insulating layer and a second electrode on said oxide film.
Claim 7
Dependent Claim
24 words
A process as claimed in claim 4, wherein said composition ratio of the metallic elements of said sol solution is a stoichiometric composition ratio.
Claim 8
Dependent Claim
23 words
A process as claimed in claim 4, wherein the process further comprises the step of subjecting said oxide film to a heat treatment.
Claim 9
Dependent Claim
20 words
A process as claimed in claim 4, wherein said first and second insulating layers are formed by a wet process.
References Cited (Backward Citations)
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