Electroluminescence element and a light emitting device using the same
First Claim
1. An electroluminescence element comprising:
- an anode;
an electroluminescent film containing an organic compound capable of generating electroluminescence, over the anode;
an electron transport layer over the electroluminescent film;
a floating electrode over the electron transport layer;
an electron transport supporting layer having a thickness of more than 10 nm and less than 1 μ
m, over the floating electrode; and
a cathode over the electron transport supporting layer,wherein the floating electrode comprises an insulating film formed in contact with the electron transporting layer and a conductive film formed in contact with the electron transport supporting layer.
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Accused Products
Abstract
An EL element which is thicker and lower-voltage drive without doping acceptor or donor than the conventional one. An EL element in which an electroluminescent film 103 containing an organic compound which can provide electroluminescent, a floating electrode 104, an electron transport supporting layer 105 and a cathode 102 are in order laminated on an anode 101. A film thickness of the electroluminescent film 103 is on the order of a conventional film thickness (on the order of approximately 100 nm), and the electron transport supporting layer 105 may also have a film thickness on the order of the electroluminescent film 103. The EL element can be driven at lower voltage than the conventional one by introducing a hole blocking material into an electron transport supporting layer.
54 Citations
60 Claims
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1. An electroluminescence element comprising:
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an anode; an electroluminescent film containing an organic compound capable of generating electroluminescence, over the anode; an electron transport layer over the electroluminescent film; a floating electrode over the electron transport layer; an electron transport supporting layer having a thickness of more than 10 nm and less than 1 μ
m, over the floating electrode; anda cathode over the electron transport supporting layer, wherein the floating electrode comprises an insulating film formed in contact with the electron transporting layer and a conductive film formed in contact with the electron transport supporting layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electroluminescence element comprising:
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a cathode; an electron transport supporting layer over the cathode; a floating electrode over the electron transport supporting layer; an electron transport layer over the floating electrode; an electroluminescent film containing an organic compound capable of generating electroluminescence, over the electron transport layer; and an anode over the electroluminescent layer, wherein at least one of the electroluminescent film and the electron transport supporting layer contains a hole blocking material, and wherein the floating electrode comprises an insulating film formed in contact with the electron transporting layer and a conductive film formed in contact with the electron transport supporting layer. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An electroluminescence element comprising:
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an anode; an electroluminescent film containing an organic compound capable of generating electroluminescence, over the anode; an electron transport layer over the electroluminescent film; a floating electrode over the electron transport layer; an electron transport supporting layer over the floating electrode; and a cathode over the electron transport supporting layer, wherein the floating electrode comprises an insulating film formed in contact with the electron transporting layer and a conductive film formed in contact with the electron transport supporting layer. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An electroluminescence element comprising:
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an anode; an electroluminescent film containing an organic compound that generates electroluminescence, over the anode; an electron transporting layer over the electroluminescent film; a floating electrode over the electron transporting layer; an electron transport supporting layer over the floating electrode; and a cathode over the electron transport supporting layer, wherein at least one of the electroluminescent film and the electron transport supporting layer contains a hole blocking material, and wherein the floating electrode comprises an insulating film formed in contact with the electron transporting layer and a conductive film formed in contact with the electron transport supporting layer. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. An electroluminescence element comprising:
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a cathode; an electron transport supporting layer having a thickness of more than 10 nm and less than 1 μ
m, over the cathode;a floating electrode over the electron transport supporting layer; an electron transporting layer over the floating electrode; an electroluminescent film containing an organic compound that generates electroluminescence, over the electron transporting layer; and an anode over the electroluminescent film, wherein the floating electrode comprises an insulating film formed in contact with the electron transporting layer and a conductive film formed in contact with the electron transport supporting layer. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49)
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50. An electroluminescence element comprising:
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a cathode; an electron transport supporting layer over the cathode; a floating electrode over the electron transport supporting layer; an electron transporting layer over the floating electrode; an electroluminescent film containing an organic compound that generates electroluminescence, over the electron transporting layer; and an anode over the electroluminescent film, wherein the floating electrode comprises an insulating film formed in contact with the electron transporting layer and a conductive film formed in contact with the electron transport supporting layer. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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Specification