Liquid crystal display device

To provide a liquid crystal display device that can promote an increase in the temperature of a liquid crystal panel at cool temperatures without requiring an additional member. A liquid crystal display device 28 of a motorcycle 10 includes display device control means 114 for controlling a liquid crystal panel 78 and a back light source 116. When the temperature of liquid crystal is lower than a predetermined value, or when it is within a fixed time period after turning on an ignition switch, as a warm-up period, the display device control means 114 increases output of the back light source 116 to a larger amount than that in a normal display state to increase the light amount of back light, and changes the entire display surface 118 to a darker color to reduce the amount of back light penetrating the display surface.