To provide a collimator for a backlight unit, and to provide a liquid crystal display (LCD) using the collimator.
The collimator includes a plate including a plurality of light passing areas, passing light incident from the backlight unit, and light non-passing areas formed among the plurality of light passing areas. Each of the light passing areas includes at least a reflective surface which is inclined toward a plane of the plate and a direction perpendicular to the plane of the plate to reduce an emission angle of reflected light emitted through the light passing area toward the LCD panel more than an incidence angle of light incident onto the light passing areas. Accordingly, light use efficiency of the LCD is increased and its contrast ratio is improved.
RI BUNKEI
CHOI KYU-MIN
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