Light guide film, backlight unit for ultrathin liquid crystal display device and mobile computer, and method for producing light guide film
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United States of America Patent
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Aug 2, 2016
Grant Date -
Oct 2, 2014
app pub date -
Mar 27, 2014
filing date -
Mar 28, 2013
priority date (Note) -
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Abstract
The present invention relates to a light guide film for a backlight unit of an ultrathin liquid crystal display device, the light guide film allowing rays of light entering from an end face to exit from a front face side, and including a hard layer (17, 18) having a pencil hardness of at least HB, the hard layer (17, 18) containing a polycarbonate as a principal component, and at least one face of the hard layer being exposed, and the entire light guide film (12) having an average thickness of no less than 100 μm and no greater than 600 μm.
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