Projection type display apparatus and optical unit
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United States of America Patent
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Aug 19, 2014
Grant Date -
Dec 6, 2012
app pub date -
May 23, 2012
filing date -
Jun 6, 2011
priority date (Note) -
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Abstract
In a blue-color liquid crystal panel out of a plurality of liquid crystal panels used in a projection type display apparatus, an integral value obtained by integrating absorbance of the liquid crystal layer thereof in a wavelength range from 300 nm to 350 nm is smaller in comparison with those of the other liquid crystal panels (a red-color liquid crystal panel and a green-color liquid crystal panel). In addition, the absorption end on the long wavelength side of the liquid crystal layer of the blue-color liquid crystal panel is positioned on the short wavelength side in comparison with the liquid crystal layers of the red-color liquid crystal panel and the green-color liquid crystal panel.
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