Display devices with ambient light sensing
AssigneeChimei Innolux Corporation
InventorNigel David Young
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Abstract
A display device comprises an illumination source (12), a display modulator (10) for modulating the light provided by the illumination source and an integrated light sensor arrangement (14) to detect a light level. Light sensor signals from a plurality of light sensors are processed such that localized shielding of the ambient light at the location of one or more of the light sensors is identified. An accurate estimate of the ambient light level can then be obtained.
Claims15
A display device comprising:
- an illumination source;
- a display modulator for modulating the light provided by the illumination source;
- a light sensor arrangement to detect a light level;
- and
- a processor for processing the signals received from the light sensor arrangement, wherein the light sensor arrangement comprises a plurality of light sensors at spaced locations, with each of the plurality of light sensors exposed to ambient light, and
- wherein the processor is configured to process the light sensor signals such that localised shielding of the ambient light at the location of one or more of the light sensors is identified, and to derive an estimate of the ambient light level.
A method of controlling an illumination source for a display device, the display device comprising a display modulator for modulating the light provided by the illumination source, the method comprising:
- using a light sensor arrangement to detect a light level, the arrangement comprising a plurality of light sensors at spaced locations, with each of the plurality of light sensors exposed to ambient light;
- processing the detected light levels such that localised shielding of light is identified at the location of one or more of the light sensors, and to derive an estimate of the ambient light level;
- and
- controlling the display device using the ambient light level.
Dependencies are inferred from the claim text.