Light emitting device and method of manufacturing the same
First Claim
1. A light emitting device comprising:
- a substrate having an insulating surface;
a thin film transistor formed over the substrate;
an insulating film formed over the thin film transistor;
a first electrode formed over the insulating film and connected to the thin film transistor through the insulating film;
a partition wall covering an edge of the first electrode and formed over the insulating film;
a layer comprising an organic compound formed over and in contact with the first electrode; and
a second electrode in contact with the layer comprising an organic compound,wherein the partition wall comprises a laminate of an organic resin layer and a light-absorbing layer including at least a reflective metal film, a first light transmissive insulating film comprising nitride, a metal nitride film and, a second light-transmissive insulating film comprising nitride,wherein the organic resin layer comprises a top surface and a side surface, the side surface being tapered,wherein the light absorbing layer entirely covers the top surface of the organic resin layer, andwherein the layer comprising an organic compound is in contact with the side surface of the organic resin layer.
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Abstract
In a top emission structure, there has been a problem in that a wiring, a TFT, or the like is provided in regions other than a light emitting region so that light reflected by the wiring reaches eyes of an observer. The present invention prevents light that is reflected by a wire from reaching eyes of an observer by providing a light-absorbing multilayer film (61) in regions other than a light emitting region. Specifically, the light-absorbing multilayer film (61) is used as an upper layer of a partition wall (also called as a bank or a barrier) that covers ends of a first electrode (66b) whereas an organic resin film (67) is used as a lower layer of the partition wall. The partition wall in the present invention is characterized by being a laminate of three or more layers formed of different materials.
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Citations
58 Claims
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1. A light emitting device comprising:
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a substrate having an insulating surface; a thin film transistor formed over the substrate; an insulating film formed over the thin film transistor; a first electrode formed over the insulating film and connected to the thin film transistor through the insulating film; a partition wall covering an edge of the first electrode and formed over the insulating film; a layer comprising an organic compound formed over and in contact with the first electrode; and a second electrode in contact with the layer comprising an organic compound, wherein the partition wall comprises a laminate of an organic resin layer and a light-absorbing layer including at least a reflective metal film, a first light transmissive insulating film comprising nitride, a metal nitride film and, a second light-transmissive insulating film comprising nitride, wherein the organic resin layer comprises a top surface and a side surface, the side surface being tapered, wherein the light absorbing layer entirely covers the top surface of the organic resin layer, and wherein the layer comprising an organic compound is in contact with the side surface of the organic resin layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A light emitting device comprising:
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a substrate having an insulating surface; a thin film transistor formed over the substrate; an insulating film formed over the thin film transistor; a first electrode formed over the insulating film and connected to the thin film transistor through the insulating film; a partition wall covering an edge of the first electrode and formed over the insulating film; a layer comprising an organic compound formed over and in contact with the first electrode; and a second electrode in contact with the layer comprising an organic compound, wherein the partition wall comprises a laminate of an organic resin layer and a light-absorbing multilayer film including at least a reflective metal film, a first light transmissive insulating film comprising nitride, a metal nitride film, and a second light-transmissive insulating film comprising nitride, wherein the organic resin layer comprises a top surface and a side surface, the side surface being tapered, wherein the light absorbing multilayer film entirely covers the top surface of the organic resin layer, and wherein the layer comprising an organic compound is in contact with the side surface of the organic resin layer. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A light emitting device comprising:
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a first electrode connected to a thin film transistor over a substrate having an insulating surface; a partition wall covering an edge of the first electrode; a layer comprising an organic compound in contact with the first electrode; and a second electrode in contact with the layer comprising an organic compound, wherein the partition wall comprises a laminate of an organic resin layer and a light-absorbing multilayer film including a reflective metal film, a first light transmissive insulating film comprising nitride, a metal nitride film, and a second light-transmissive insulating film comprising nitride. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A light emitting device comprising:
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a substrate having an insulating surface; a thin film transistor formed over the substrate; an insulating film formed over the thin film transistor; a first electrode formed over and in contact with the insulating film and connected to the thin film transistor though the insulating film; a partition wall covering an edge of the first electrode and formed over the insulating film; a layer comprising an organic compound formed over and in contact with the first electrode; and a second electrode in contact with the layer comprising an organic compound, wherein the partition wall comprises a laminate of an organic resin layer and a light-absorbing multilayer film including at least a reflective metal film, a first light transmissive insulating film comprising nitride, a metal nitride film, and a second light-transmissive insulating film comprising nitride, wherein the organic resin layer comprises a top surface and a side surface, the side surface being tapered, wherein the light absorbing multilayer film entirely covers the top surface of the organic resin layer, and wherein the layer comprising an organic compound is in contact with the side surface of the organic resin layer. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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Specification