A display includes a flexible display panel having a back face, two backlight modules disposed on the back face of the display panel and each including a contact end, and an outer casing having two casing panels respectively connected to and supporting the backlight modules oppositely of the display panel. The casing panels are pivotal relative to each other to move the backlight modules and the display panel between collapsed and non-collapsed positions. In the collapsed position, the display panel is folded, and the backlight modules are parallelly spaced apart. In the non-collapsed position, the display panel is laid flat, the backlight modules coplanarly cover the back face of the display panel, and the contact ends of the backlight modules abut against each other.