A display device includes a display panel and a backlight. The display panel includes a first substrate, a second substrate, and a heatsink. The first substrate includes a second substrate non-overlapping portion on which the second substrate is not disposed but a driving component is disposed. The backlight includes a light guide plate and a light source. The light source emits light toward an end surface of the light guide plate. The heatsink includes a display panel overlapping portion, a light source overlapping portion, and a connecting portion. The display panel overlapping portion is on a rear surface of the first substrate at least over an area corresponding to the driving component. The light source overlapping portion is on a side of the backlight remote from the display panel. The connecting portion connects the display panel overlapping portion and the light source overlapping portion to each other.