VISIBILITY IMPROVING METHOD OF LIQUID CRYSTAL DISPLAY DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a liquid crystal display method for ensuring satisfactory visibility regardless of a viewing angle when a screen is observed through a polarizing plate such as a sunglass.

SOLUTION: In a liquid crystal display device having at least a backlight light source, a liquid crystal cell and a polarizing plate disposed on a viewer side of the liquid crystal cell, a white light emitting diode is used as the backlight light source and a polymer film having 3,000 to 30,000 nm retardation disposed on the viewer side of the polarizing plate so that the absorption axis of the polarizing plate and the slow axis of the polymer film form substantially 45 degrees.

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