A system for display images comprising a thin film transistor array substrate is disclosed. The system for display images comprises a substrate having a pixel area, a source/drain region overlying the substrate within an active layer in the pixel area, a bottom electrode overlying the substrate in the pixel area, a top electrode overlying the bottom electrode, a first dielectric layer disposed on the active layer, a second dielectric layer disposed on the first dielectric layer, wherein the second dielectric layer is disposed between the bottom electrode and the top electrode and a gate disposed overlying the active layer, wherein the first and second dielectric layers are interposed between the gate and the active layer.