Patent ID: 7872619

Claim:
An active matrix electro-luminescent display system, comprising: a) a display composed of an array of a plurality of regions, wherein the current to each of the regions is provided by a pair power lines, at least one power line oriented along a first dimension of the display, each region including an array of light emitting elements for emitting light and each power line having a resistance; b) pixel driving circuits for independently controlling the current to each light-emitting element in response to an image signal, wherein the intensity of the light output by the light emitting elements is dependent upon the current provided to each light emitting element; c) an array of select lines oriented along the first dimension for sequentially providing a signal to the pixel driving circuits within each region of the array of regions, allowing the pixel driving circuits within any one region to be selected to receive a data signal at any moment in time; d) an array of data lines oriented along a second dimension of the display that is perpendicular to the first dimension, wherein the data lines provide the image signal to the pixel driving circuit for each light-emitting element; e) one or more display drivers for receiving an input image signal for data to drive the pixel driving circuits and generating a converted image signal for driving the light emitting elements in each region of the display through signals provided through the data lines and select lines, wherein the one or more display drivers sequentially receives the input image signal for driving the light emitting elements within each region of the array of regions, analyzes the input image signal received for each region to estimate the current that would result at, at least, one point along at least one of the power lines providing current to each region, if employed without further modification, based upon device architecture, the resistance of a power line and material and performance characteristics of device components, and sequentially generates a converted image signal for driving the light emitting elements in each region as a function of the input image signal and the estimated currents wherein the one or more display drivers generate the converted image signal as a function of one or more normalization constants based on the relative values of the estimated currents and a reference value.