The embodiment of the utility model provides an organic light -emitting diode (OLED) device has solved current organic light -emitting diode (OLED) device's thin film transistor's last grid and has descended the grid to be difficult to the problem that the upper and lower conducting channel of realization switched on simultaneously. This organic light -emitting diode (OLED) device includes: two at least thin film transistor and vdd electrode, wherein, at least one thin film transistor among two at least thin film transistor includes: descend the grid, locate down the grid top lower insulating layer, locate down the insulating layer top semiconductor layer, locate the last insulating layer of semiconductor layer top, locate go up last grid, source electrode and the drain electrode of insulating layer top, wherein, semiconductor layer respectively with source electrode and drain electrode overlap joint, with among the semiconductor layer on the parallel plane of conducting channel, the orthographic projection of going up the grid with there is first clearance between the orthographic projection of source electrode, the orthographic projection of going up the grid with there is the second clearance between the orthographic projection of drain electrode, wherein, at least one thin film transistor's last grid with the vdd electrode is connected.