REFLECTIVE PLATE FOR BACKLIGHT UNIT, BACKLIGHT UNIT COMPRISING THE SAME AND LIQUID CRYSTAL DISPLAY

摘要

The present invention relates to a reflective plate for a backlight unit. The reflective plate for a backlight unit is arranged in the backlight unit to reflect incident light, and comprises: a reflective layer for reflecting incident random polarized light; a first cholesteric liquid crystal layer formed at one side of the reflective layer to reflect first polarized light in a specific area and transmit second polarized light in the specific area therethrough; and a second cholesteric liquid crystal layer arranged to reflect the second polarized light in the specific area, transmitted through the first cholesteric liquid crystal layer, wherein the first cholesteric liquid crystal layer and the second cholesteric liquid crystal layer have reflective wavelength bands for reflecting light in a specific area having a low reflectivity, from among an arbitrary reflection area to be reflected by the reflective layer. Consequently, the present invention improves reflectivity of the specific area having a low reflectivity, from among the visible light area for reflecting incident light through a reflective plate, thereby compensating a color difference.