Liquid crystal display device having individually driven blocks in light-blocking panel

A liquid crystal display device comprising:

• a liquid crystal panel;
• an optical sheet positioned below the liquid crystal panel;
• a light guide plate positioned below the optical sheet;
• a selective light-blocking panel positioned below the light guide plate;
• a black reflector positioned below the selective light-blocking panel, and being black and configured to absorb light that is emitted through a back surface of the light guide plate and then is transmitted through the selective light-blocking panel;
• and
• a light emitting diode (LED) assembly positioned on a side of the light guide plate, and configured to emit the light,
• wherein the selective light-blocking panel is sectioned into a plurality of blocks that are individually driven, and each block is configured to transmit the light emitted through the back surface of the light guide plate when turned on, and configured to diffuse and reflect the light emitted through the back surface of the light guide plate when turned off,
• wherein a luminance of the light that is emitted towards a front of the light guide plate after being transmitted through a block that is turned on among the plurality of blocks and being reflected by the black reflector is lower than a luminance of the light that is emitted towards the front of the light guide plate after being diffused and reflected by a block that is turned off among the plurality of blocks based on the black reflector being configured to absorb the light that is transmitted through the block that is turned on,
• wherein the entire black reflector includes a black material,
• wherein the selective light-blocking panel includes a first substrate and a second substrate, which have a first electrode and a second electrode, respectively, and a polymer dispersed liquid crystal layer interposed between the first and second substrates,
• wherein the polymer dispersed liquid crystal layer includes liquid crystal olecules which are encapsulated by a capsule and dispersed in a matrix of polymer,
• wherein refractive indexes of the capsule and the liquid crystal molecules match each other, and
• wherein the selectivelight-blocking panel is located apart from the light guide plate.