Backlight unit, liquid-crystal display apparatus, and stacked structure
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United States of America Patent
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Jan 16, 2018
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N/A
app pub date -
Mar 10, 2015
filing date -
Mar 12, 2014
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Abstract
Sufficiently sharp directivity can be secured with a simple configuration in a configuration that improves the efficiency of utilizing the light exiting from a primary light source using a reflective polarizing plate. A backlight unit (2) supplies light exiting from an exit surface of a light guide plate (12) to a liquid-crystal display panel (3) via a reflective polarizing plate (16) after correcting directivity of the exiting light using a prism sheet (14) having a downwardly convex shape. A ¼-wavelength plate (15) is provided between the prism sheet (14) and the reflective polarizing plate (16), between the prism sheet (14) and the light guide plate, or between the light guide plate and a reflective sheet disposed on a surface of the light guide plate opposite to the prism sheet (14).
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