Patent ID: 7400345
Filing Date: 2008-07-15
Classification: G09G,H04N

Abstract:
1. A method for uniformly illuminating an OLED display device, the OLED display device including a display screen with a screen aspect ratio, the method comprising: receiving a first external video signal having a first signal aspect ratio different from the screen aspect ratio; illuminating a primary region of the OLED display in response to the first external video signal, whereby a secondary region of the OLED display is not illuminated in response to the first external video signal; receiving a second external video signal having a second signal aspect ratio different from the first external video signal aspect ratio, wherein the display area corresponding to the second signal aspect ratio includes at least a portion of each of the primary and of the secondary regions of the OLED display; generating regional correction values corresponding to the primary and secondary regions of the OLED display; employing the regional correction value to correct the second external video signal to compensate for differential aging in the portions of the primary and secondary regions of the OLED display resulting from differential illumination of the primary and secondary regions of the OLED display in response to the first external video signal; illuminating the portions of the primary and secondary regions of the OLED display included in the second external video signal in response to the corrected second external video signal; and recording the duration of illumination of the OLED display in response to the corrected second external video signal, and wherein the regional correction value is generated in response to the durations of the first and corrected second external video signals.