Light Emitting Device and Manufacturing Method of the Same
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Abstract
The present invention is directed to a light emitting device structured so as to increase the amount of light which is taken out in a certain direction after emitted from a light emitting element, and a method of manufacturing this light emitting device. An upper end portion of an insulating material 19 that covers an end portion of a first electrode 18 is formed to have a curved surface having a radius of curvature, a second electrode 23a is formed to have a slant face as going from its center portion toward its end portion along the curved surface. Light emitted from a light emitting layer comprising an organic material 20 that is formed on the second electrode 23a is reflected at the slant face of the second electrode 23a to increase the total amount of light taken out in the direction indicated by the arrow in FIG. 1A.
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Citations
99 Claims
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1-65. -65. (canceled)
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66. A light emitting device comprising:
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a first electrode; an insulating material covering an end portion of the first electrode; a second electrode covering a side face of the insulating material and contacting with the first electrode; a light emitting layer comprising an organic material over the second electrode and the insulating material; a third electrode over the light emitting layer and the insulating material; and an auxiliary electrode in contact with the third electrode, wherein the auxiliary electrode comprises the same material as the second electrode, and wherein the second electrode is formed in a concave shape partially having a curved surface, and reflects a light emitted from the light emitting layer comprising the organic material. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74, 75, 76)
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77. A light emitting device comprising:
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a first electrode; an insulating material covering an end portion of the first electrode; a second electrode covering a side face of the insulating material and contacting with the first electrode; a light emitting layer comprising an organic material over the second electrode and the insulating material; a third electrode over the light emitting layer and the insulating material; and an auxiliary electrode in contact with the third electrode, wherein the auxiliary electrode comprises the same material as the second electrode, wherein the second electrode is formed in a concave shape partially having a curved surface, and reflects a light emitted from the light emitting layer comprising the organic material, and wherein the light emitting layer comprising the organic material comprises a material emitting a white light, and is combined with a color filter. - View Dependent Claims (78, 79, 80, 81, 82, 83, 84)
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85. A light emitting device comprising:
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a first electrode connected to one of a source and a drain of a thin film transistor; an insulating material covering an end portion of the first electrode; a light emitting layer comprising an organic material over the first electrode and the insulating material; and a second electrode over the light emitting layer and the insulating material, wherein the insulating material has a curved surface possessing a first radius of curvature in its upper end portion and a curved surface possessing a second radius of curvature in its lower end portion, and the first radius of curvature and the second radius of curvature are 0.2 μ
m to 3 μ
m. - View Dependent Claims (86, 87, 88, 89, 90, 91, 92, 93)
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94. A light emitting device comprising:
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a first electrode connected to one of a source and a drain of a thin film transistor; an insulating material covering an end portion of the first electrode; a light emitting layer comprising an organic material over the first electrode and the insulating material; and a second electrode over the light emitting layer and the insulating material, wherein the insulating material has a curved surface possessing a first radius of curvature in its upper end portion and a curved surface possessing a second radius of curvature in its lower end portion, and the first radius of curvature and the second radius of curvature are 0.2 μ
m to 3 μ
m, andwherein the light emitting layer comprising the organic material comprises a material emitting a white light, and is combined with a color filter. - View Dependent Claims (95, 96, 97, 98, 99)
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Specification