the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror

Full Title

Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes > for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix > using controlled light sources > using electroluminescent panels > semiconductive, e.g. using light-emitting diodes [LED] > organic, e.g. using organic light-emitting diodes [OLED] > using an active matrix > with pixel circuitry controlling the current through the light-emitting element > the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror