| 摘要 |
A solid-sealed organic electroluminescence display device is provided with means of preventing the occurrence of a dark spot in the market, due to the degradation of an organic EL light emitting layer by water entering from a pinhole of a sealant. In order to prevent the degradation of the organic EL layer by water, a first inorganic film, an organic flattening film, and a second inorganic film are formed on an upper electrode. Water entering from the pinhole in the second inorganic film diffuses into the organic flattening film, and degrades the organic EL layer in several months, resulting in a defect in the market. In order to prevent this, a material capable of reacting with oxygen or water and exhibiting color is added to the organic flattening film. Then, the defective organic electroluminescence display device is picked up and eliminated prior to delivery to the market.
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