Display device

A display device includes: a substrate; driving voltage lines and data lines positioned on the substrate; a first electrode of a driving transistor connected to the driving voltage line; a semiconductor layer including a channel and a second electrode; a gate electrode of the driving transistor overlapping the channel of the driving transistor; a lower sustain electrode extending from the gate electrode of the driving transistor; and an upper sustain electrode overlapping the lower sustain electrode, in which the semiconductor layer further includes: a first electrode of a switching transistor connected between the lower sustain electrode and the data line; a channel; and a second electrode; the upper sustain electrode is not overlapped with the channel of the driving transistor; the lower sustain electrode includes a first portion and a second portion positioned on both sides of the gate electrode of the driving transistor. 一种显示装置包括：基底；驱动电压线和数据线，定位在所述基底上；驱动晶体管的第一电极，连接到所述驱动电压线；半导体层，包括沟道和第二电极；所述驱动晶体管的栅极电极，与所述驱