in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements

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] > Details of drivers for data electrodes > in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements