A thin-film transistor panel includes a substrate, and a thin-film transistor formed on the substrate. The transistor includes a gate electrode, a gate insulating film, a semiconductor thin film, first and second ohmic contact layers formed on the semiconductor thin film, and source and drain electrodes which are respectively formed on the first and second ohmic contact layers. The semiconductor thin film includes a channel area between the source electrode and the drain electrode. A pixel electrode is connected to the source electrode of the thin-film transistor. First and second conductive coating films are provided on the source and drain electrodes, respectively, and formed of the same material as the pixel electrode. The first conductive coating film is wider than the source electrode, and the second conductive coating film is wider than the drain electrode.