Patent ID: 7714829

Claim:
A method for maintaining a colour point for a plurality of light emitting elements used to illuminate a display of an electronic device, comprising: determining a first value corresponding to activation data of each element of said plurality of light emitting elements; comparing the first value against a first threshold to identify a compensation value for aging of said each element; comparing the first value against a second threshold if the first value exceeds the first threshold; if the first value is between said first and said second thresholds, then utilizing a first compensation value for said compensation value for the plurality of light emitting elements; if the first value exceeds the second threshold, then utilizing a second compensation value for said compensation value for the plurality of light emitting elements; adjusting an output to produce said colour on said display by adjusting an intensity for each said element utilizing its compensation value; and for a grey scale image to be generated on said display, at a pixel of said display setting said pixel to a transmissive state if said grey scale image at said pixel includes a colour to be activated; and not turning on said pixel if said grey scale image at said pixel does not include said colour.