1. Field of the Invention
The present invention relates to an organic electroluminescent panel and a vehicle lamp having the organic electroluminescent panel.
2. Related Art
A related art vehicle lamp has an organic electroluminescent device as a light source. For example, a related art vehicle lamp has a main light source and a sub light source arranged inside a lamp chamber provided between a housing and a transparent cover. The sub light source has a planar light emitting device configured as an organic electroluminescent device. The planar light emitting device is provided to surround the main light source (see, e.g., JP 2011-150888 A).
When using an organic electroluminescent panel in a vehicle lamp, it is sometimes difficult to provide sufficient luminous intensity required for the vehicle lamp. For example, minimum luminous intensity required for a tail lamp is 4 candela. Tail lamps are often required to have a narrow light emitting portion for the purpose of design. However, organic electroluminescent devices have relatively low brightness. Therefore, it is difficult to satisfy the minimum luminous intensity of 4 candela with an organic electroluminescent panel having a narrow light emitting portion.