Patent ID: 6738035
Filing Date: 2004-05-18
Classification: G09G

Abstract:
A method for creating a video data signal compensated for the non-uniformity of an LCD having a matrix of pixels, comprising the steps of:measuring the display characteristics of each pixel, having an LCD cell, in the matrix of pixels; deriving at lest one calibration parameter for each pixel in the matrix of pixels from the measured display characteristics of the corresponding pixel; storing into a calibration memory at least one calibration parameter for each pixel in the matrix of pixels; obtaining the compensated video word for each pixel in the matrix of pixels by using the calibration parameter for the corresponding pixel fetched from the calibration memory; storing into a video memory having a matrix of memory-cells the compensated video word for each pixel in the matrix of pixels; creating the compensated video data signal by fetching the compensated video word for each pixel from the video memory; and wherein each pixel including (a) a capacitor having a first terminal and a second terminal, (b) a first non-linear element having a first terminal connecting to the first terminal of said capacitor, (c) a second non-linear element having a first terminal connecting to the first terminal of said capacitor, (d) a third non-linear element having a first terminal connecting to the second terminal of said capacitor, and (e) a resistive element having a first terminal connecting to the second terminal of said capacitor.