Electroluminescent panel having a layer of germanium nitride between an electroluminescent layer and a back electrode
First Claim
1. An electroluminescent panel comprising a transparent electrode, a back electrode opposite said transparent electrode, and an electroluminescent layer for emitting electroluminescent light between said transparent and said back electrodes, said electroluminescent panel further comprising:
- an intermediate layer between said electroluminescent layer and said back electrode, said intermediate layer consisting of germanium and nitrogen to form germanium nitride whereby said intermediate layer provides the electroluminescent panel with a high rate of brightness increase for an applied voltage.
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Accused Products
Abstract
In an electroluminescent panel comprising a transparent electrode, a back electrode, and an electroluminescent layer between the transparent and the back electrodes, an intermediate layer is interposed between the electroluminescent layer and the back electrode and essentially consists of germanium and nitrogen. The intermediate layer serves as a light absorption layer for absorbing ambient light. A nitrogen distribution in the intermediate layer may be either substantially uniform or decreased from the electroluminescent layer side towards the back electrode side. The decrease may be made stepwise or continuously. The intermediate layer may be superposed through a dielectric layer or directly on the electroluminescent layer. Only oxygen may be added in intermediate layer to the germanium and the nitrogen, to provide either a substantially uniform oxygen distribution or a variable oxygen distribution which is continuously or stepwise decreased from the electroluminescent layer side towards the back electrode side.
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Citations
51 Claims
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1. An electroluminescent panel comprising a transparent electrode, a back electrode opposite said transparent electrode, and an electroluminescent layer for emitting electroluminescent light between said transparent and said back electrodes, said electroluminescent panel further comprising:
- an intermediate layer between said electroluminescent layer and said back electrode, said intermediate layer consisting of germanium and nitrogen to form germanium nitride whereby said intermediate layer provides the electroluminescent panel with a high rate of brightness increase for an applied voltage.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An electroluminescent panel comprising a transparent electrode, a back electrode opposite said transparent electrode, and an electroluminescent layer for emitting electroluminescent light between said transparent and said back electrodes, said electroluminescent panel further comprising:
- an intermediate layer between said electroluminescent layer and said back electrode, said intermediate layer consisting of germanium, nitrogen, and oxygen to form germanium oxynitride whereby said intermediate layer provides the electroluminescent panel with a high rate of brightness increase for an applied voltage.
- View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
Specification