Backlight unit and liquid crystal display device
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United States of America Patent
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Jun 12, 2018
Issued Date -
Mar 31, 2016
app pub date -
Sep 25, 2015
filing date -
Sep 26, 2014
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Abstract
A backlight unit has a light-guide plate and a light source optically coupled with the light-guide plate, with which light is input from a plane of the light-guide plate and white-light is output from the first principal plane of the light-guide plate. The light source has a plurality of blue light emitting diodes, red phosphor material excited by light from the blue light emitting diodes and emits red light, and a plurality of green semiconductor lasers having emission peaks at green light wavelengths.
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