A display device includes an accommodating member in which an inner space is defined, a display panel accommodated in the inner space in the accommodating member, and an energy generating module disposed between the accommodating member and the display panel and which produces a triboelectricity, where the energy generating module includes a first electrified substrate fixed to the accommodating member and a second electrified substrate disposed on the first electrified substrate, the second electrified substrate moves relative to the first electrified substrate by a frictional event, and the triboelectricity is produced by the relative movement between the first and second electrified substrates.