Luminescent device and process of manufacturing the same
First Claim
1. A luminescent device comprising:
- a thin film transistor provided over an insulating surface of a substrate;
a luminescent element electrically connected with said thin film transistor, said luminescent element comprising an organic compound layer, an anode and a cathode, said cathode containing an alkaline metal;
at least one insulating layer provided between said thin film transistor and said luminescent element and selected from the group consisting of an insulating layer adsorbing said alkaline metal and an insulating layer preventing diffusion of said alkaline metal.
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Accused Products
Abstract
In the case where a material containing an alkaline metal or an alkaline-earth metal in a cathode, an anode, a buffer layer, or an organic compound layer is used, there is a fear of the diffusion of an impurity ion (representatively, alkaline metal ion or alkaline-earth metal ion) from the EL element to the TFT being generated and causing the variation of characteristics of the TFT.
As the insulating films 117, 317 and 417 provided between TFT and EL element, a film containing a material for not only blocking the diffusion of an impurity ion such as an alkaline metal ion and an alkaline-earth metal ion but also aggressively absorbing an impurity ion such as an alkaline metal ion and an alkaline-earth metal ion, for example, a silicon nitride film containing a large amount of fluorine, a silicon oxynitride film containing a large amount of fluorine or an organic resin film containing a particle consisted of an antimony (Sb) compound, a tin (Sn) compound, or an indium (In) compound is used.
74 Citations
30 Claims
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1. A luminescent device comprising:
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a thin film transistor provided over an insulating surface of a substrate;
a luminescent element electrically connected with said thin film transistor, said luminescent element comprising an organic compound layer, an anode and a cathode, said cathode containing an alkaline metal;
at least one insulating layer provided between said thin film transistor and said luminescent element and selected from the group consisting of an insulating layer adsorbing said alkaline metal and an insulating layer preventing diffusion of said alkaline metal. - View Dependent Claims (2, 3, 4, 5)
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6. A luminescent device comprising:
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a thin film transistor provided over an insulating surface of a substrate;
a luminescent element electrically connected with said thin film transistor, said luminescent element comprising an organic compound layer, an anode and a cathode, said organic compound layer containing an alkaline metal;
at least one insulating layer provided between said thin film transistor and said luminescent element and selected from the group consisting of an insulating layer adsorbing said alkaline metal and an insulating layer preventing diffusion of said alkaline metal. - View Dependent Claims (7, 8, 9, 10)
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11. A luminescent device comprising:
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a thin film transistor provided over an insulating surface of a substrate;
a luminescent element electrically connected with said thin film transistor, said luminescent element comprising an organic compound layer, an anode, a buffer layer and a cathode, said buffer layer containing an alkaline metal;
at least one insulating layer provided between said thin film transistor and said luminescent element and selected from the group consisting of an insulating layer adsorbing said alkaline metal and an insulating layer preventing diffusion of said alkaline metal. - View Dependent Claims (12, 13, 14, 15, 17, 18, 19, 20)
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16. A luminescent device comprising:
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a thin film transistor provided over an insulating surface of a substrate;
a luminescent element electrically connected with said thin film transistor, said luminescent element comprising an organic compound layer, an anode and a cathode, said cathode containing an alkaline-earth metal;
at least one insulating layer provided between said thin film transistor and said luminescent element and selected from the group consisting of an insulating layer adsorbing said alkaline metal and an insulating layer preventing diffusion of said alkaline metal.
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21. A luminescent device comprising:
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a thin film transistor provided over an insulating surface of a substrate;
a luminescent element electrically connected with said thin film transistor, said luminescent element comprising an organic compound layer, an anode and a cathode, said organic compound layer containing an alkaline metal;
at least one insulating layer provided between said thin film transistor and said luminescent element and selected from the group consisting of an insulating layer adsorbing said alkaline metal and an insulating layer preventing diffusion of said alkaline metal. - View Dependent Claims (22, 23, 24, 25, 27, 28, 29, 30)
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26. A luminescent device comprising:
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a thin film transistor provided over an insulating surface of a substrate;
a luminescent element electrically connected with said thin film transistor, said luminescent element comprising an organic compound layer, an anode, a buffer layer and a cathode, said buffer layer containing an alkaline metal;
at least one insulating layer provided between said thin film transistor and said luminescent element and selected from the group consisting of an insulating layer adsorbing said alkaline metal and an insulating layer preventing diffusion of said alkaline metal.
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Specification