Compensation technique for color shift in displays
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United States of America Patent
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Aug 18, 2015
Grant Date -
Oct 10, 2013
app pub date -
Mar 16, 2013
filing date -
Jun 16, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A system for maintaining a substantially constant display white point over an extended period of operation of a color display formed by an array of multiple pixels in which each of the pixels includes multiple subpixels having different colors, and each of the subpixels includes a light emissive device. The display is generated by energizing the subpixels of successively selected pixels, and the color of each selected pixel is controlled by the relatives levels of energization of the subpixels in the selected pixel. The degradation behavior of the subpixels in each pixel is determined, and the relative levels of energization of the subpixels in each pixel are adjusted to adjust the brightness shares of the subpixels to compensate for the degradation behavior of the subpixels. The brightness shares are preferably adjusted to maintain a substantially constant display white point.
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