A display device is disclosed. In one aspect, the device includes a plurality of pixels. Each of the pixels includes a first thin-film transistor (TFT) formed over a substrate and comprising gate electrode, a source electrode, and a drain electrode. Each pixel also includes a storage capacitor formed over the substrate, wherein the storage capacitor includes first and second electrodes, and a dielectric layer interposed between the first and second electrodes. The first electrode, the dielectric layer, and the second electrode have substantially the same pattern.