Patent ID: 8421957

Claim:
A liquid crystal display device comprising: a liquid crystal panel having a pair of substrates, a liquid crystal layer sandwiched between said paired substrates, data lines for applying to said liquid crystal layer a voltage corresponding to image data at a predetermined timing and gate lines, a plurality of active elements connected to intersections of said data lines and said gate lines and pixels driven by said active elements; an illuminating device having a plurality of LED packages each including LED's and a lens, said LED packages being congregated on a plane in a large area to provide a backlight for irradiating rays of light to said liquid crystal panel; wherein each LED package includes a high refractive index member containing a substance having a larger refractive index than that of a material forming the lens and said LED is sealed with said high refractive index member, with said lens being superimposed on said high refractive index member; wherein said lens is shaped to have a recess near its center; wherein said lens is shaped so that a moving radius increases as a polar angle increases within a range of 0 to 80 degrees; and wherein the moving radius is defined as a distance starting from the lens center and ending in the lens surface, and the polar angle is defined as an angle that is made by the moving radius to the center axis that is vertical to a plane on which said LED package is located and passing through the center of said lens.