LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To make it possible to confirm whether an optical sheet is properly assembled or not by visual observation from the outside and prevent the deformation of the optical sheet due to thermal expansion and to solve problems caused by heat generation from a light source. SOLUTION: In a backlight device of a liquid crystal display device 1, protrusions 10a-1 and 10b-1 protruding on the periphery of optical sheets 10a and 10b are provided. In a backlight housing 12, an opening 12a is provided in a position corresponding to the protrusions of the optical sheets. A protrusion 20a protruding toward the optical sheets is provided at the center part of a backlight housing 20. The shapes of the part enclosing a luminescent tube light emission part 42a and the part enclosing a luminescent tube electrode part 42b of a reflector 46 of a light source 40 are specified to be different from each other.