Liquid-crystal display device
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United States of America Patent
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Dec 18, 2018
Grant Date -
May 26, 2016
app pub date -
Jan 20, 2016
filing date -
Jul 22, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A liquid-crystal display device having a backlight unit emitting unpolarized blue light, a light conversion member, a polarization separating member, a backlight-side polarizer, a liquid crystal cell, and a display-side polarizing plate wherein the polarization separating member separates the unpolarized blue light into blue transmitted light and blue reflected light which are linearly polarized in vibration directions that are orthogonal to each other, and transmits some of light in a wavelength range each of 500 nm to 600 nm and 600 nm to 650 nm, the light conversion member includes a fluorescent material that, due to blue light entering the light conversion member, emits green light which is linearly-polarized light and red light which is linearly-polarized light; and a transmission axis of the backlight-side polarizer is parallel to vibration directions of the green and red light, is improved in terms of front surface luminance and color reproduction region.
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