Liquid crystal display having dynamic backlighting
First Claim
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1. A liquid crystal display (LCD), comprising:
- a liquid crystal panel configured for displaying images with a plurality of gray levels;
a light guide plate, comprising a plurality of light emitting areas; and
a plurality of light sources positioned for providing light to areas of the light guide plate corresponding to the light emitting areas, respectively;
wherein when an area of the liquid crystal panel corresponding to one of the light emitting areas of the light guide plate displays image information wherein an average brightness of gray levels of the image information is high, the LCD is capable of adjusting the corresponding light source to provide light with high brightness, and when an area of the liquid crystal panel corresponding to one of the light emitting areas of the light guide plate displays image information wherein an average brightness of gray levels of the image information is low, the LCD is capable of adjusting the corresponding light source to provide light with low brightness.
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Abstract
A liquid crystal display includes a liquid crystal panel for displaying images, a light guide plate, and light sources. The light guide plate includes light emitting areas. The light sources provide light to the corresponding light emitting areas respectively. When an area of the liquid crystal panel corresponding to a light emitting area of the light guide plate displays a high brightness gray level, the corresponding light source provides light with high brightness. When an area of the liquid crystal panel corresponding to a light emitting area of the light guide plate displays a low brightness gray level, the corresponding light source provides light with low brightness.
19 Citations
20 Claims
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1. A liquid crystal display (LCD), comprising:
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a liquid crystal panel configured for displaying images with a plurality of gray levels; a light guide plate, comprising a plurality of light emitting areas; and a plurality of light sources positioned for providing light to areas of the light guide plate corresponding to the light emitting areas, respectively; wherein when an area of the liquid crystal panel corresponding to one of the light emitting areas of the light guide plate displays image information wherein an average brightness of gray levels of the image information is high, the LCD is capable of adjusting the corresponding light source to provide light with high brightness, and when an area of the liquid crystal panel corresponding to one of the light emitting areas of the light guide plate displays image information wherein an average brightness of gray levels of the image information is low, the LCD is capable of adjusting the corresponding light source to provide light with low brightness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A liquid crystal display (LCD), comprising:
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a liquid crystal panel configured for displaying images with a plurality of gray levels; a light guide plate, comprising a plurality of light emitting areas; and a plurality of light sources positioned for providing light to the light emitting areas, respectively; wherein a brightness of each light source is capable of being individually controlled by the LCD, so that the brightness of each light emitting area is adjusted according to an average brightness of gray levels of a corresponding part of an image displayed by the liquid crystal panel. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification