Patent ID: 8325295

Claim:
A liquid crystal display device comprising: a liquid crystal display panel; a plurality of groups of light source units; a plurality of light guide plates; and a light source control circuit to control light amounts of the light source units, wherein the plurality of groups of the light source units and the plurality of light guide plates forming a plurality of pairs are stacked behind the liquid crystal display panel, the plurality of light guide plates to transmit light from the plurality of groups of the light source units, wherein in each of the plurality of light guide plates, areas from which the transmitted light exiting toward the liquid crystal display panel differ from one another, wherein one of the plurality of groups of the light source units paired with one of the plurality of light guide plates includes at least two light source units that are controlled in light amount independently of each other, wherein a number of the areas of the one of the plurality of light guide plates paired with the one of the plurality of groups of the light source units is at least a number of the light source units thereof, wherein the light exiting from each of the areas is mainly emitted from one of at least two light source units, wherein the light source control circuit controls the at least two light source units in light amount independently of each other, and wherein the plurality of pairs of the plurality of groups of the light source units and the plurality of light guide plates each comprise light condensing means for reducing a divergence angle of the light emitted from the one of the plurality of groups of the light source units between the one of the plurality of groups of the light source units and the one of the plurality of light guide plates.