Liquid crystal display device

1. A liquid crystal display device comprising:

an upper panel comprising an inner surface and an outer surface;

an alignment layer, the alignment layer attached on the inner surface of the upper panel and a polarizer attached on the outer surface of the upper panel;

a lower panel including a first surface and a second surface disposed opposite to the first surface, the first surface facing the inner surface of the upper panel;

a plurality of metallic lines disposed on the first surface of the lower panel, the plurality of metallic lines disposed substantially parallel to each other and wherein the plurality of metallic lines extend in a first direction;

a phase retardation layer disposed on the first surface of the lower panel;

liquid crystal molecules injected between the upper panel and lower panel; and

a backlight unit comprising a light source which emits light toward the lower panel and a reflector which reflects light reflected from the lower panel,

wherein the phase retardation layer is disposed between the plurality of metallic lines and the lower panel, and

wherein intervals between the plurality of metallic lines are narrower than wavelengths of visible rays.

2. The device of claim 1 , wherein the plurality of metallic lines reflect light with a polarization component in the first direction and allow light with a polarization component in a second direction to transmit therethrough, the second direction substantially perpendicular to the first direction.

3. The device of claim 1 , wherein the plurality of metallic lines contact the liquid crystal molecules to align the liquid crystal molecules in the first direction.

4. The device of claim 1 , wherein the polarizer allows light with a polarization component in the first direction to transmit therethrough.

5. The device of claim 1 , wherein the phase retardation layer includes a slower axis and a faster axis, and changes circular polarization to linear polarization or linear polarization to circular polarization by creating a phase difference between light in the slower axis direction and light in the faster axis direction of one quarter wavelength.

6. The device of claim 5 , wherein the slower axis or the faster axis of the phase retardation layer makes an angle of about 45 degrees with respect to the first direction or a second direction substantially perpendicular to the first direction.

7. A liquid crystal display device, comprising:

an upper panel comprising an inner surface and an outer surface;

an alignment layer attached on the inner surface of the upper panel;

a polarizer attached on the outer surface of the upper panel;

a lower panel including a first surface and a second surface disposed opposite to the first surface, the first surface facing the inner surface of the upper panel;

a plurality of metallic lines disposed on the first surface of the lower panel, the plurality of metallic lines disposed substantially parallel to each other and which extend in a first direction;

liquid crystal molecules injected between the upper and lower panels; and

a backlight unit comprising a light source which emits light toward the lower panel and a reflector which reflects light made incident from the lower panel,

wherein the lower panel comprises a thin film transistor, a pixel electrode, a phase retardation layer and an insulation substrate, and the phase retardation layer is disposed on the insulation substrate, the thin film transistor is disposed on the phase retardation layer, the pixel electrode is disposed on the thin film transistor and the plurality of metallic lines are disposed on the pixel electrode, and

wherein intervals between the plurality of metallic lines are narrower than wavelengths of visible rays.