DISPLAY DEVICE AND METHOD FOR DETECTING BACKLIGHT LIGHT FROM SAME
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United States of America Patent
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Issued Date -
Apr 21, 2016
app pub date -
May 31, 2013
filing date -
May 31, 2013
priority date (Note) -
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Abstract
A liquid crystal display device includes a liquid crystal panel, a light-guiding plate, a light source, and an optical sensor. The light source is attached to an end face of a bottom of the light-guiding plate so as to emit light, which is guided into the light-guiding plate so as to illuminate the liquid crystal panel. The optical sensor having a photo-acceptance part is attached to a rear face of a chassis so as to partially detect light. A panel opening is formed by attaching a gobo to an opening formed in the chassis at a side end of the light-guiding plate, thus regulating the range of light received with the photo-acceptance part of the optical sensor. Thus, it is possible to precisely detect the intensity of light by use of the panel opening which eliminates high-intensity light reflected by an edge-reflection sheet of the light-guiding plate.
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