Organic electroluminescence multi-color display and method of fabricating the same
AssigneePioneer Corporation
InventorYoshinori Fukuda
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Abstract
Disclosed is an organic electroluminescence multi-color display comprising a transparent electrode, a plurality of organic compound material layers including at least light emitting layers, a metal electrode, which are stacked on a transparent substrate in sequence, respectively, and a plurality of organic electroluminescence elements comprising the light emitting layers made of different organic compound materials and taking on different colors of light emission. Each of functional layers, having the same function, of the organic compound material layers excluding the light emitting layers are different in thickness corresponding to a color of emitted light.
Claims22
An organic electroluminescence multi-color display device comprising:
- a substrate;
- and
- a plurality of organic electroluminescence elements formed on the substrate, wherein each of the organic electroluminescence elements includes
- a first electrode formed on the substrate,
- a plurality of organic compound material layers layered on the first electrode, the plurality of organic compound material layers including a light emitting layer, and
- a second electrode layered on the plurality of organic compound material layers,
- wherein the first electrodes in neighboring organic electroluminescence elements have the same thickness as one another,
- wherein the light emitting layers in neighboring organic electroluminescence elements are made of different organic compound materials so as to take on different colors of light emission respectively, and
- wherein the layered organic compound material layers in neighboring organic electroluminescence elements have respective thicknesses between the first and second electrodes, the respective thicknesses of the layered organic compound material layers being set to enhance respective chromaticities and external light emission efficiencies of the elements with interference of light emitted from the respective light emitting layers in the neighboring organic electroluminescence elements.
A method for fabricating an organic electroluminescence multi-color display device, the display device including a plurality of organic electroluminescence elements formed on a substrate, each of the organic electroluminescence elements including first and second electrodes and a light-emitting layer,
- the method comprising the steps of:
- forming first electrodes on the substrate to have the same thickness as one another;
- stacking a plurality of organic compound material layers on the first electrodes,
- in such a manner that the plurality of organic compound material layers includes light emitting layers which are made of different organic compound materials so as to take on different colors of light emission in neighboring organic electroluminescence elements, and
- wherein the plurality of organic compound material layers in neighboring organic electroluminescence elements have respective thicknesses to enhance respective chromaticities and external light emission efficiencies of the elements with interference of light emitted from the respective light emitting layers in the neighboring organic electroluminescence elements;
- and
- forming second electrodes layered on the plurality of organic compound material layers.
Dependencies are inferred from the claim text.