LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a liquid crystal display device that has high contrast and superior image quality evenly formed over the whole region in a viewing angle and minimizes fine display irregularities such as moire and glare.

SOLUTION: The liquid crystal display device includes: a liquid crystal cell; a polarizing plate arranged on both sides of the liquid crystal cell; an optical diffusion element disposed on the outside of the polarizing plate of the viewing side; and a backlight unit disposed on the outside of the polarizing plate of the side opposite to the viewing side. The backlight unit is a parallel-light light source device that emits collimated light of which the half-luminance angle is 3 to 35° toward the liquid crystal cell and the ratio Fw(BL)/Fw(FD) of the half-diffusion angle Fw(FD) of the light diffusion element to the half-luminance angle Fw(BL) of the collimated light is 0.5 or less.

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