Display panel

The embodiment of the invention provides a display panel, and the display panel comprises a thin film transistor, and the thin film transistor comprises a gate electrode; an active portion having a channel region; a source electrode electrically connected to the active portion; and a drain electrode electrically connected to the active portion. Wherein at least one of the gate electrode, the source electrode and the drain electrode comprises a metal layer, a first barrier layer and a second barrier layer, and the second barrier layer and the first barrier layer are made of different materials. By setting at least one of a gate electrode, a source electrode and a drain electrode as a structure including a metal layer, a first barrier layer and a second barrier layer, the first barrier layer and the second barrier layer can block the metal layer from being oxidized and can prevent ion diffusion of the metal layer; therefore, the phenomenon that the conductive efficiency of the metal layer is reduced due to the