Liquid crystal display device using cholesteric liquid crystal

A liquid crystal display device, comprising:

• first and second substrates facing and spaced apart from each other;
• a retardation layer on an outer surface of the first substrate;
• a linear polarizing layer on the retardation layer;
• a cholesteric liquid crystal color filter (CCF) layer on an inner surface of the second substrate;
• a liquid crystal layer between the first substrate and the CCF layer;
• a first cholesteric liquid crystal (CLC) polarization layer on an outer surface of the second substrate and having a first helical pitch of a first circular polarization direction;
• a second cholesteric liquid crystal (CLC) polarization layer on the first CLC polarization layer, the second CLC polarization layer having a second helical pitch of a second circular polarization direction opposite to the first circular polarization direction, wherein the CCF layer has the same circular polarization direction as the first circular polarization direction;
• and
• a backlight unit outside the second CLC polarization layer.