Compensation for sub-par lighting in displays

摘要

LEDs near or surrounding a non-functional or sub-par LED are adjusted to compensate the sub-par LED. The compensation may include illumination (e.g., increased illumination of nearby LEDs to compensate for under illumination of a non-functional LED) or a shift in hue of the nearby LEDs to compensate for an opposite shift in hue of the sub-par LED.

主权项

1. A display, comprising:
a backlight comprising a set of light sources energizable at different levels so as to produce a modulated backlight; a spatial light modulator illuminated by the modulated backlight; and a processor configured to calculate:
an adjustment of a first drive levels of a first ring of light sources so as to compensate for a sub-par performance of at least one light source of the set of light sources, the first ring of light sources surrounding the sub-par light source and selected from the set of light sources;an adjustment of a second drive level of a second ring of light sources surrounding the first ring of light sources so as to counter-compensate for the first set of light sources driven at the first drive level, the second ring of light sources selected from the set of light sources,wherein the adjusted first and second drive levels comprise a variance from the first and second drive level of each light source that would occur if the sub-par light source were operating at par.