An embodiment of the invention provides a display panel, which includes a substrate having a pixel region and a peripheral region, a conducting layer overlying the substrate in the peripheral region, a first insulating layer overlying the conducting layer in the peripheral region, wherein a ratio between an area of the first insulating layer and an area of the conducting layer in the peripheral region is between about 0.27 and 0.99, a lower electrode layer overlying the first insulating layer, a second insulating layer overlying the lower electrode layer, and an upper electrode layer overlying the second insulating layer.