A display device including a display panel including a light emitting element configured to generate light, and an input detection layer disposed on the display panel and including a plurality of sensing electrodes disposed on the display panel and arranged in one direction, and a plurality of trace lines electrically connected to the plurality of sensing electrodes, respectively, in which at least one of the trace lines includes a single layer part including one conductive layer, and a multilayer part including at least two conductive layers disposed on different layers.