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;
a floating electrode over the electroluminescent film;
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.
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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.
121 Citations
72 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;
a floating electrode over the electroluminescent film;
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electroluminescence element comprising:
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an cathode;
an electroluminescent film containing an organic compound capable of generating electroluminescence, over the cathode;
a floating electrode over the electroluminescent film;
an electron transport supporting layer over the floating electrode; and
a anode 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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An electroluminescence element comprising:
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an cathode;
an electroluminescent film containing an organic compound capable of generating electroluminescence, over the cathde;
a floating electrode over the electroluminescent film;
an electron transport supporting layer over the floating electrode; and
a anode 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. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. 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;
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. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. 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. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. 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 at least one of the electroluminescent film and the electron transport supporting layer contains a hole blocking material. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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Specification