Method for the operation of illuminants

摘要

The invention relates to the operation of illuminants, in particular OLEDs. The invention relates to a method and a measuring instrument for determining the electrical properties of an OLED, the equivalent circuit diagram of which is composed of the parallel connection of an equivalent diode DE and an equivalent capacitance CE as well as an equivalent resistance RE that is connected in series to said parallel connection. The values for the equivalent resistance RE and the equivalent capacitance CE are determined at a different time than are the values for the equivalent diode DE.

主权项

1. A method for determining the electrical properties of an OLED, the equivalent circuit diagram of which includes a parallel connection of an equivalent diode DE and an equivalent capacitor CE, and an equivalent resistor RE connected in series with this parallel connection, comprising:
measuring a value for the equivalent resistance RE based on the equivalent circuit diagram; measuring a value for the equivalent capacitance CE based on the equivalent circuit diagram at least partially concurrently with measuring the value for the equivalent resistance RE; and measuring, separately from the time of measuring the values of the equivalent resistance RE and the equivalent capacitance CE, values for the equivalent diode DE based on the equivalent circuit diagram; wherein the values of the equivalent resistance RE and the equivalent capacitance CE are measured while limiting the voltage drop across the OLED to levels below the voltage at which the equivalent diode DE becomes conducting.