Reduced power consumption in oled display system

A passive matrix, electro-luminescent display system for receiving an input image signal, processing such input image signal, and displaying such processed image with reduced power consumption, comprising:

• a. a passive matrix, electro-luminescent display having an array of column electrodes, an array of row electrodes oriented orthogonal to the array of column electrodes and a thin film electro-luminescent layer located between the array of column electrodes and the array of row electrodes, the intersection of each column and row electrode forming an individual light-emitting element (pixel) having an effective capacitor;
• b. one or more row drivers for receiving current from one or more row electrodes within the array of row electrodes;
• c. one or more column drivers for providing current to the column electrodes within the array of column electrodes to charge the capacitor of the light-emitting elements and provide a drive current to the light-emitting elements;
• and
• d. a display driver for receiving the input image signal and processing this input image signal to provide signals to the one or more column drivers corresponding to the electrical charge to be provided by the column driver during the display of a plurality of image fields, wherein the display driver:
• i. receives the input image signal;
• ii. determines column drive signals for at least a first image field and a second image field;
• iii. calculates a value that is correlated to a change in the a capacitive charge of the capacitors that will occur between the display of the first image field and the second image field for at least one column of the passive-matrix, electro-luminescent display;
• iv. adjusts at least one of the column drive signals within first or second image fields to compensate for the change in total capacitive charge;
• and
• v. provides adjusted column drive signals for each pixel.