The disclosure provides a display device, including a main power supply channel and an external power supply channel. The main power supply channel includes a main power input interface, a main power conversion module, and a main function module. The main power input interface is connected to the main power conversion module. The main power conversion module is connected to the main function module. The main power input interface is configured to receive main input power. The external power supply channel includes an external power input interface and an external power output interface. The external power input interface is connected to the external power output interface. The external power input interface is configured to receive external input power. The external power output interface is configured to output external output power.