FIELD: physics.
SUBSTANCE: electroluminescent device (9) for emitting light (7) whose colour point can be set variably, has at least two electroluminescent regions (41, 42) which, to allow application of the same operating voltage, are arranged to be connected in parallel electrically. The electroluminescent regions (41, 42) contain at least one first electroluminescent region (41) of a first electroluminescent material for emitting light in a first spectral band in accordance with a first luminance versus voltage characteristic (81), and at least one second electroluminescent region (42) of a second electroluminescent material for emitting light in a second spectral band which is not the same as the first spectral band, in accordance with a second luminance versus voltage characteristic (82) which is not the same as the first luminance versus voltage characteristic (81).
EFFECT: simple electroluminescent device which provides a controlled colour point and brightness.
10 cl, 10 dwg
Authors
Dates
2012-04-27—Published
2007-08-14—Filed