| 摘要 |
Two aspects, an impurity factor and a structural factor are assumed as the deterioration causes of an organic light emitting device and means for solving the respective factors are provided. In order to prevent deterioration of the light emitting device, concentrations of moisture and oxygen, which are left in a space in which an organic light emitting element is sealed, are minimized. At the same time, an impurity including oxygen, such as moisture or oxygen which is included in an organic compound composing the organic light emitting element, is reduced. An element structure for preventing the deterioration of the organic light emitting element due to stress is used to suppress the deterioration.
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