A TFT-driven display device includes an upper substrate and a lower substrate facing each other, multiple TFTs disposed on a side of the lower substrate facing the upper substrate, and a metal layer disposed on a side of the upper substrate facing to the lower substrate. The metal layer includes a portion that does not overlap with the active layer of the TFTs in a light transmission direction, or the metal layer includes portions overlapping with the active layer of the TFTs in the light transmission direction, the overlapping portions have a pattern width less than a pattern width of other portions that do not overlap with the active layer. In the TFT-driven display device, a photo leakage current caused by the light reflected by the metal may be reduced, because no portion of the metal layer is provided in the position opposed to the active layer of the TFTs located on a TFT array substrate.