| 摘要 |
An object of the present invention is to reduce uneven brightness. A backlight unit 12 of the present invention includes a hot cathode tube 17, a chassis 14, a diffuser plate 30, and a lamp clip 20. The hot cathode tube 17 is a linearly formed light source. The chassis 14 houses the hot cathode tube 17 and has an opening 14b for light from the light source to pass through. The diffuser plate 30 is an optical member 15 is arranged so as to face the hot cathode tube 17 and to cover the opening 14b. The lamp clip 20 is a light-source holding member holding a luminous portion LP of the hot cathode tube 17. An area of the diffuser plate 30 overlapping the lamp clip 20 (a light-source holding member overlapping area) includes a low-light-reflectance area LR having light reflectance relatively at at least first surface 30a facing the hot cathode tube 17 smaller than that of a peripheral area ALR.
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