Patent ID: 9418587
Filing Date: 2016-08-16
CPC Classification: G06T,G09G,H04N

Claim Text:
1. A method of maintaining a substantially constant display white point over an extended period of operation of a color display formed by an array of multiple pixels, each of said pixels including multiple subpixels having different colors and white, and each of said subpixels including a light emissive device, said method comprising receiving a video signal, controlling the color of a selected pixel by adjusting relative levels of energization of the subpixels in the selected pixel based on the video signal, determining a color shift degradation behavior based on aging of a white subpixel in the selected pixel, and re-adjusting the relative levels of energization of at least one of the color subpixels in the selected pixel to adjust brightness shares of said subpixels in said selected pixel to compensate for said color shift degradation, due to aging, of said white subpixel independently of other pixels in said array and based on said determined color shift degradation behavior of said white subpixel based on aging, said brightness shares being adjusted to maintain a substantially constant display white point.