Patent ID: 7550308

Claim:
A method for driving a display, wherein the display includes: a transistor away panel having at least: an electrically conductive substrate having a surface coated with a first insulating film, a plurality of field-effect transistors arrayed on the surface of the electrically conductive substrate in a form of a matrix, each of the plurality of field-effect transistors including: a first insulating film coating at least a portion of the electrically conductive substrate; a gate electrode disposed on the electrically conductive substrate with the portion of the first insulating film; a second insulating film covering the gate electrode and the portion of the first insulating film; a semiconductor layer disposed on the second insulating film; and a source electrode and a drain electrode disposed on the semiconductor layer opposite to each other, the source and drain electrodes contacting the semiconductor layer at two separate regions defining a channel therebetween, wherein the semiconductor layer in the channel has a part overlapping with the gate electrode and a part not overlapping with the gate electrode, wherein a width of the part of the semiconductor layer overlapping with the gate electrode is smaller than a width of the channel, wherein the part of the semiconductor layer overlapping with the gate electrode constitutes a first field-effect transistor, a current of which is controlled by a potential of the gate electrode, and wherein the part of the semiconductor layer not overlapping with the gate electrode constitutes a second field-effect transistor, a current of which is controlled by a potential of the conductive substrate, and a wiring for applying a voltage to the electrically conductive substrate; a plurality of display devices driven by the transistor array panel; a gate-line-driving circuit for supplying a scanning signal voltage to each gate electrode; a source-line-driving circuit for supplying an image signal voltage to each source electrode; and a substrate-voltage-generating circuit for supplying a voltage to the wiring, and wherein the method comprises steps of: turning each field-effect transistor arrayed in the form of a matrix into a state in which the field-effect transistor is controlled by a voltage applied to the gate electrode by supplying a voltage to the electrically conductive substrate from the substrate-voltage-generating circuit, for a duration of time that the gate-line-driving circuit is supplying a scanning signal voltage to the gate electrode; and resetting all display devices arrayed in a form of a matrix to display identical views by supplying a voltage for commonly placing all field-effect transistors arrayed in the form of a matrix in a conductive state to the electrically conductive substrate from the substrate-voltage-generating circuit, before the gate-line-driving circuit supplies a scanning signal voltage to the gate electrode.