Patent ID: 6473065
Filing Date: 2002-10-29
Classification: G09G

Abstract:
A method for creating a video data signal compensated for the non-uniformity of an OLED having a matrix of organic-light-emitting-elements, comprising the steps of:measuring the emission curve of each organic-light-emitting-element in the matrix of organic-light-emitting-elements by measuring at least one data point on the emission curve; deriving a set of fitting parameters including at least one member for the emission curve of each organic-light-emitting-element in the matrix of organic-light-emitting-elements from the measured data points on the emission curve of the corresponding organic-light-emitting-element; storing into a calibration memory the set of fitting parameters for the emission curve of each organic-light-emitting-element in the matrix of organic-light-emitting-elements; obtaining the compensated video word for each organic-light-emitting-element in the matrix of organic-light-emitting-elements by using the set of fitting parameters for the emission curve of the corresponding organic-light-emitting-element fetched from the calibration memory; storing into a video memory having a matrix of memory-cells the compensated video word for each organic-light-emitting-element in the matrix of organic-light-emitting-elements; and creating the compensated video data signal by fetching the compensated video word for each organic-light-emitting-element from the video memory.