| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device which displays an excellent image whose deviation in brightness is suppressed even if an illumination device is made thinner. <P>SOLUTION: The distance D between a reflection sheet 5 and a diffusion sheet 11 is 7-13 mm. The distance D (mm) and the distance p (mm) between adjacent fluorescence tubes 2 satisfy a relational equation of p≤1.34×D+9, and the distance D (mm) and the distance e (mm) to the fluorescence tube 2 nearest from the boundary between the upper end plane 5a of the reflection sheet 5 and its inclined plane 5b satisfy a relational equation of 13.7e≤1.6×D+4. The diffusion sheet 11 has concave and convex patterns on its surface at a liquid crystal panel 3 side. An optical sheet 12 which is arranged in front of the diffusion sheet having the patterns includes at least two diffusion sheets and one light collecting film. The reflection sheet 5 has the inclined plane 5b at its end, and the distance between the reflection sheet 5 and the center axis of the fluorescence tubes 5 is 2.8 mm or shorter. <P>COPYRIGHT: (C)2009,JPO&INPIT |
