Organic el device and organic el panel
3 Assignments
0 Petitions
Accused Products
Abstract
A transparent electrically conductive film comprising one of In2O3—ZnO, In2O3—SnO2, ZnO, and SnO2 is provided on a surface of a metal electrode of an organic EL (electroluminescent) device on the light-emitting layer side, and the thickness of this transparent electrically conductive film is set such as to satisfy the following equation, where L is the optical distance from the organic light-emitting layer to the metal electrode, and λ is the emission wavelength, whereby light reflected by the metal electrode is made to undergo interference and thus strengthen itself in the device; as a result, there are provided an organic EL device and an organic EL panel using the same, according to which the external quantum efficiency can be improved with no accompanying deterioration in the brightness, and moreover the contrast can be improved:
L=(2n+1)λ/4 (n=0, 1, 2, . . . ).
37 Citations
29 Claims
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1-10. -10. (canceled)
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11. An organic electroluminescent device comprising an organic electroluminescent light-emitting part including an organic light-emitting layer, between a metal electrode and a transparent electrode, the organic electroluminescent device comprising:
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a transparent electrically conductive film on a surface of the metal electrode, on the organic electroluminescent light-emitting part side thereof;
wherein a thickness of the transparent electrically conductive film is set so as to satisfy the following equation, where L is the optical distance from the organic light-emitting layer to the metal electrode, and λ
is the wavelength of light emitted by the organic light-emitting layer;
L=(2n+1)λ
/4 (n=0, 1, 2, . . . ). - View Dependent Claims (12, 13)
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14. An organic electroluminescent device comprising an organic electroluminescent light-emitting part including an organic light-emitting layer, between a metal electrode and a transparent electrode, the organic electroluminescent device comprising:
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a transparent electrically conductive film is provided on a surface of the metal electrode, on the organic electroluminescent light-emitting part side thereof;
whereinlight of wavelengths different than the wavelength of light emitted by the organic light-emitting layer is absorbed by at least one, or both, of the metal electrode and the transparent electrically conductive film, and only light of the wavelength emitted by the organic electroluminescent light-emitting layer is discharged from the transparent electrode. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. An organic electroluminescent device comprising an organic electroluminescent light-emitting part including an organic light-emitting layer, between a metal electrode and a transparent electrode, the organic electroluminescent device comprising:
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a transparent electrically conductive film on a surface of the metal electrode on the organic electroluminescent light-emitting part side;
whereina thickness of the transparent electrically conductive film is set so as to satisfy the following equation, where L is the optical distance from the organic light-emitting layer to the metal electrode, and λ
is the wavelength of light emitted by the organic light-emitting layer;
L=(2n+1)λ
/4 (n=0, 1, 2, . . . );and wherein light of wavelengths different than the wavelength of light emitted by the organic electroluminescent light-emitting layer is absorbed by the metal electrode and/or the transparent electrically conductive film, and only light of the wavelength emitted by the organic electroluminescent light-emitting layer is discharged from the transparent electrode. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification