Electronic appliance and light-emitting device
First Claim
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1. A light-emitting device comprising:
- a first electrode;
a first partition wall over the first electrode, the first partition wall being a tapered partition wall;
a second partition wall over the first partition wall, the second partition wall being an inversely tapered partition wall;
a composite layer over the first electrode, the first partition wall and the second partition wall, the composite layer including a metal oxide and an organic compound;
a light emitting layer comprising an organic material over the composite layer; and
a second electrode over the light emitting layer.
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Abstract
An EL element having a novel structure is provided, which is suitable for AC drive. A light-emitting element of the invention is provided with material layers (material layers each having approximately symmetric I-V characteristics with respect to the zero point in a graph having the abscissa axis showing current values and the ordinate axis showing voltage values) between a first electrode and a layer including an organic compound and between the layer including the organic compound and a second electrode respectively. Specifically, each of the material layers is a composite layer including a metal oxide and an organic compound.
49 Citations
25 Claims
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1. A light-emitting device comprising:
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a first electrode; a first partition wall over the first electrode, the first partition wall being a tapered partition wall; a second partition wall over the first partition wall, the second partition wall being an inversely tapered partition wall; a composite layer over the first electrode, the first partition wall and the second partition wall, the composite layer including a metal oxide and an organic compound; a light emitting layer comprising an organic material over the composite layer; and a second electrode over the light emitting layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A light-emitting device comprising:
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a first electrode; a first partition wall over the first electrode, the first partition wall being a tapered partition wall; a second partition wall over the first partition wall, the second partition wall being an inversely tapered partition wall; a light emitting layer comprising an organic material over the first electrode, the first partition wall and the second partition wall; a composite layer over the light emitting layer, the composite layer including a metal oxide and an organic compound; and a second electrode over the composite layer. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A light-emitting device comprising:
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a first electrode disposed in a stripe form; a first partition wall over the first electrode, the first partition wall being a tapered partition wall having an opening; a second partition wall over the first partition wall, the second partition wall being an inversely tapered partition wall perpendicular to the first electrode; a first composite layer over the first electrode, the first partition wall and the second partition wall, the first composite layer including a first metal oxide and a first organic compound; a light emitting layer comprising an organic material over the first composite layer; a second composite layer over the light emitting layer, the second composite layer including a second metal oxide and a second organic compound; and a second electrode over the second composite layer, the second electrode being disposed in a stripe form perpendicular to the first electrode. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification