EL Display Device and Manufacturing Method Thereof
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Abstract
Reducing the manufacturing cost of an EL display device and an electronic device furnished with the EL display device is taken as an objective. A textured structure in which projecting portions are formed on the surface of a cathode is used. External stray light is diffusely (irregularly) reflected by the action of the projecting portions when reflected by the surface of the cathode, and therefore a defect in which the face of an observer or the surrounding scenery is reflected in the surface of the cathode can be prevented. This can be completed without using a conventionally necessary high price circular polarizing film, and therefore it is possible to reduce the cost of manufacturing the EL display device.
58 Citations
39 Claims
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1-21. -21. (canceled)
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22. An electroluminescence device comprising:
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a first electrode; a light emitting layer comprising an organic electroluminescent material over the first electrode; and a second electrode over the light emitting layer, wherein at least an upper surface of the first electrode has projecting portions, and wherein a spacing between the projecting portions is in the range of 0.05 to 1 μ
m. - View Dependent Claims (23, 24, 25, 26, 27)
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28. An electroluminescence device comprising:
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a first electrode; a light emitting layer comprising an organic electroluminescent material over the first electrode; and a second electrode over the light emitting layer, wherein the light emitting layer has projecting portions, and wherein a spacing between the projecting portions is in the range of 0.05 to 1 μ
m. - View Dependent Claims (29, 30, 31, 32, 33)
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34. An electroluminescence device comprising:
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a first electrode; a light emitting layer comprising an organic electroluminescent material over the first electrode; and a second electrode over the light emitting layer, wherein at least a lower surface of the second electrode has projecting portions, and wherein a spacing between the projecting portions is in the range of 0.05 to 1 μ
m. - View Dependent Claims (35, 36, 37, 38, 39)
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Specification