Methods and apparatus for backlighting dual modulation display devices
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United States of America Patent
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Mar 29, 2016
Grant Date -
Sep 11, 2014
app pub date -
Oct 12, 2012
filing date -
Oct 13, 2011
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Abstract
Methods and apparatus are provided for backlighting a dual modulation display device. Each type of light source comprises a multi-primary light source having two or more primary color light emitters having different primary color characteristics from corresponding primary color emitters of other types of light source. Methods may comprise receiving illumination target values for a plurality of locations on the front modulator corresponding to the plurality of light sources, each of the locations on the front modulator configured to be illuminated by two or more of the plurality of light sources, determining primary color drive values source based on the primary color characteristics for that primary color and the illumination target value for the location corresponding to that light source, and driving the primary color light emitters or each type of light source based on the primary color drive values.
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