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Electrical structural element for indicating the service life of an organic electroluminescence light emitting diode useful for automobiles and machines fitted with computer controls and LED displays
Electrical structural element for indicating the service life of an organic electroluminescence light emitting diode useful for automobiles and machines fitted with computer controls and LED displays
Electrical structural element for indicating the service life of an organic electroluminescence light emitting diode with at least one functional layer, in which the emitted color changes with increasing use of the element and which serves as a measure of the service life of the element is new.
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