| 摘要 |
The present invention provides a process for producing an organic electroluminescent (EL) element, which involves a vacuum film formation step using a flexible film, and which can improve the driving voltage, the occurrence of dark spots or the like, the light-emitting properties and the service life of the organic EL element. Specifically provided is a process for producing an organic EL element, which comprises at least a step of forming a first electrode, an organic functional layer comprising a light-emitting layer and a second electrode in this order on a flexible film (a long base material) and uses at least one of a leader film and a side tape. The process is characterized in that the step involves a vacuum film formation step using a vacuum film formation device, the flexible film to be introduced into the vacuum film formation device and at least one of the leader film and the side tape are dried prior to the introduction into the vacuum film formation device, and the vacuum film formation step is carried out at a water partial pressure of 5×10-5 Pa or less.
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