An organic light emitting diodes display includes: a switching thin film transistor and a driving thin film transistor connected to the switching thin film transistor, wherein the driving thin film transistor includes a driving semiconductor layer section, a first gate insulating layer covering the driving semiconductor layer section, a floating gate electrode disposed on the first gate insulating layer, a second gate insulating layer covering the floating gate electrode, and a driving gate electrode disposed on the second gate insulating layer and at a position corresponding to the floating gate electrode, wherein the second gate insulating layer has a permittivity in the range of about 10 to about 100.