LIQUID CRYSTAL DISPLAY DEVICE

摘要

Provided is a liquid crystal display device that is capable of improving heat dissipation of an LED by a simple configuration. The liquid crystal display device (100) comprises a liquid crystal panel (10) and a backlight unit (50), wherein the backlight unit (50) comprises: an LED substrate (32) on which a plurality of LED elements (31) are arranged; a heat spreader (34) that disperses the heat of the LED substrate (32); a backlight (30); and a backlight chassis (40). A trench (36) having an air layer (35) is formed on the heat spreader (34), first through holes (45) in communication with the air layer (35) are formed on side walls (40a) of the backlight chassis (40), and second through holes (75) in communication with a space (73) between the side walls (40a) of the backlight chassis (40) are formed on a side wall (70a) of the exterior cabinet (70).