| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a backlight device capable of enhancing luminance in the center part of a display screen, and also capable of enhancing uniformity of luminance on the display screen by correcting luminance deterioration in the peripheral part of the display screen, and to provide a liquid display device capable of obtaining a display image causing no uneven luminance and having high quality on the display screen of a liquid crystal display panel by using this backlight device. <P>SOLUTION: This backlight device is equipped with a diffusion plate DEP having a lighting surface to make diffused light irradiated on the back of a display panel, a plurality of cold-cathode fluorescent lamps CFL installed by arranging them in parallel with and face to face with the back of the diffusion plate DEP to make light source light irradiated on the back of the diffusion plate DEP, and a reflector installed face to face with the backs of a plurality of the cold-cathode fluorescent lamps CFL to make the light source light irradiated from a plurality of the cold-cathode fluorescent lamps CFL reflected on the back of the diffusion plate DEP. A plurality of the cold-cathode fluorescent lamps CFL are installed so that their arrangement spaces in the center part corresponding to the center part of the display screen of the display panel are made narrower than the peripheral part corresponding to the peripheral part of the display screen, and are also installed so that the spaces between a plurality of the cold-cathode fluorescent lamps CFL and the diffusion plate DEP are wider in the center part than in the peripheral part. Thereby, luminance in the center part of the display screen can be enhanced and uniform luminance on the display screen can be achieved. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
