An active-matrix substrate comprising a transparent insulative substrate, thin film transistors arranged in a matrix pattern on the transparent substrate, pixel electrodes each connected to a drain electrode of each of the thin film transistors, a plurality of gate lines each adapted to supply a signal to a gate electrode of each of the thin film transistors, a plurality of source signal lines intersecting the plurality of gate lines and each adapted to supply a signal to a source electrode of each of the thin film transistors, a single shortcircuiting ring for shortcircuiting each of the signal lines at the outermost periphery of the transparent insulative substrate, and a thin film resistor having a resistance of 10 k.OMEGA. to 500 k.OMEGA. provided intermediate between an input terminal of each of the signal lines and the single shortcircuiting ring wherein the thin film resistor comprises a silicon film & a silicide film overlying the silicon film.