Provided is an organic electroluminescent element containing a flexible substrate having thereon a first electrode layer, an organic layer unit containing a light-emitting layer formed on the first electrode layer, and a second electrode layer formed on the organic layer unit, wherein the organic electroluminescent element emits light to an outside of the organic electroluminescent element with a light distribution property of the emitted light satisfying the following relationships of: 0.85≦L2/L1≦1.20; and L3/L1≦0.45, provided that L1 is a front luminance, L2 is a luminance of view angle 20 degrees, and L3 is a luminance of view angle 60 degrees.
ORGANIC ELECTROLUMINESCENT ELEMENT AND VEHICLE LAMP FITTING
2017-03-09
Patent
Electronic Resource
English
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES |
European Patent Office | 2020
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