Patent ID: 8115891

Claim:
A liquid crystal display device comprising: a liquid crystal display panel in which a liquid crystal layer is sandwiched between a first light-transmitting substrate having pixel electrodes and a second light-transmitting substrate having color filters, a first polarizer is formed on a back surface of the first light-transmitting substrate, and a second polarizer is mounted on a front surface of the second light-transmitting substrate; a backlight device which is arranged on a back-surface side of the liquid crystal display panel and supplies a light to the liquid crystal display panel, wherein the backlight device includes: a diffusion plate which includes a light radiation surface for radiating diffusion light to the back surface of the liquid crystal display panel; a plurality of cold cathode fluorescent lamps which is arranged parallel to each other in a state that the cold cathode fluorescent lamps face a back surface of the diffusion plate in an opposed manner and radiates a light-source light to the diffusion plate, and a reflection plate which is arranged to face back surfaces of the plurality of cold cathode fluorescent lamps and reflects the light-source light radiated from the plurality of cold cathode fluorescent lamps to the diffusion plate, and the plurality of cold cathode fluorescent lamps are arranged symmetrically with respect to a center portion of the arrangement such that an arrangement interval between one of adjacent pairs of the plurality of cold cathode fluorescent lamps at the center portion thereof corresponding to a center portion of a display screen of the liquid crystal display panel is set larger than the arrangement intervals between others of the adjacent pairs of the plurality of cold cathode fluorescent lamps arranged at positions spaced from the central portion in a direction toward peripheral portions thereof corresponding to peripheral portions of the display screen of the liquid crystal display panel.