Abstract: The liquid crystal display device includes pixel electrodes; a common electrode; a plurality of data lines and a plurality of gate lines intersecting each other; a plurality of switchers for the pixel electrodes for supplying signals from the data lines to the pixel electrodes; a gate line driver for scanning the gate lines; a data line driver for driving the data lines in accordance with the gradation to be displayed; and a controller for controlling the gate line driver and the data line driver. The controller includes a signal absence detector for detecting that no signal has been input to the liquid crystal display device. The controller outputs a signal to the gate line driver to make all the gate lines active for a predetermined time after the signal absence detector detects that no signal has been input. The controller outputs a signal to the data line driver to supply an electric potential, applied to the common electrode, to all the data lines for the predetermined time.

Abstract: The liquid crystal display device of the present invention comprises: pixel electrodes; a common electrode; a plurality of data lines and a plurality of gate lines intersecting each other; a plurality of switchers, provided for the pixel electrodes, for supplying signals from the data lines to the pixel electrode; a gate line driver for scanning the gate lines; a data line driver for driving the data lines, in accordance with the gradation to be displayed; and a controller for controlling the gate line driver and the data line driver. The controller comprises a signal absence detector for detecting that no signal has been input to the liquid crystal display device. The controller outputs a signal to the gate line driver to make all the gate lines active for a predetermined time after the signal absence detector detects that no signal has been input.

Abstract: In order to prevent a liquid crystal display (LCD) from being damaged by electrostatic discharge, a plurality of static voltage discharging circuits are provided within the display. The LCD includes a first and second transparent substrates provided in a manner wherein they oppose each other and are spaced apart by a predetermined distance. The first substrate has one surface on which a color filter is deposited. The color filter is entirely covered with a common electrode. The second substrate carries a plurality of pixel electrodes in matrix and a plurality of thin film transistors. Another electrode is deposited at a periphery of one surface of the second transparent substrate. A plurality of lines, for thin film transistors, including column and row lines are deposited on the one surface of the second transparent substrate. The plurality of lines respectively extend to the corresponding thin film transistors.

Abstract: In order to prevent a liquid crystal display (LCD) from being damaged by electrostatic discharge, a plurality of static voltage discharging circuits are provided within the display. The LCD includes a first and second transparent substrates provided in a manner wherein they oppose each other and are spaced apart by a predetermined distance. The first substrate has one surface on which a color filter is deposited. The color filter is entirely covered with a common electrode. The second substrate carries a plurality of pixel electrodes in matrix and a plurality of thin film transistors. Another electrode is deposited at a periphery of one surface of the second transparent substrate. A plurality of lines, for thin film transistors, including column and row lines, and are deposited on the one surface of the second transparent substrate. The plurality of lines respectively extend to the corresponding thin film transistors.