Liquid crystal display with black point modulation
First Claim
Patent Images
1. A method for displaying an image on a liquid crystal display comprising:
- (a) illuminating a first pixel at a first non-zero illumination level during a first frame;
(b) illuminating said first pixel at a second non-zero illumination level during a second frame, wherein said second frame is the next frame immediately following said first frame, wherein said second illumination level is greater than said first level;
(c) selectively decreasing said first pixel in illumination to a third non-zero illumination level less than said first illumination level prior to illuminating said first pixel at said second illumination level during said second frame;
(d) wherein the magnitude and duration of said second non-zero illumination level are each automatically calculated as a function of selection of said step of selectively decreasing said first pixel to said third non-zero illumination level and a target image brightness for said next frame.
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Abstract
A backlit display with improved dynamic range. A first pixel is illuminated at a first non-zero illumination level during a first frame and a second non-zero illumination level during a second frame, immediately following the first frame. The second illumination level is greater than the first level. The first pixel is decreased in illumination to a level less than the first illumination level prior to illuminating the first pixel at the second illumination level during the second frame.
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Citations
20 Claims
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1. A method for displaying an image on a liquid crystal display comprising:
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(a) illuminating a first pixel at a first non-zero illumination level during a first frame; (b) illuminating said first pixel at a second non-zero illumination level during a second frame, wherein said second frame is the next frame immediately following said first frame, wherein said second illumination level is greater than said first level; (c) selectively decreasing said first pixel in illumination to a third non-zero illumination level less than said first illumination level prior to illuminating said first pixel at said second illumination level during said second frame; (d) wherein the magnitude and duration of said second non-zero illumination level are each automatically calculated as a function of selection of said step of selectively decreasing said first pixel to said third non-zero illumination level and a target image brightness for said next frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification