Patent ID: 8400411

Claim:
A liquid crystal display device comprising: a first substrate; a second substrate arranged to face the first substrate with a predetermined gap between the first and second substrates; a plurality of pixel electrodes arranged on the first substrate; a plurality of thin-film transistors arranged on the first substrate to be respectively connected with the plurality of pixel electrodes, wherein the plurality of thin-film transistors are turned on based on a scanning signal from scanning lines which electrically connect the pixel electrodes to signal lines through which an image data signal is supplied; an opposed electrode provided on the second substrate to face the plurality of pixel electrodes so as to form a plurality of pixels in areas facing the plurality of pixel electrodes; a plurality of touch input contact points provided on either one of the pixel electrodes and the opposed electrode, the plurality of touch input contact points protruding at a height smaller than the predetermined gap between the first substrate and the second substrate so as to respectively correspond to at least one previously selected pixel among the plurality of pixels, wherein the plurality of touch input contact points are brought into conduction with the other one of the pixel electrodes and the opposed electrode by flexural deformation caused by a pressing force of a touch onto the first substrate or the second substrate; and a liquid crystal layer sealed in the gap between the first substrate and the second substrate; wherein the liquid crystal display device displays an image corresponding to the image data signal by sequentially turning on the thin-film transistors, supplying the image data signal to each of the plurality of pixel electrodes, and writing image data by applying a voltage corresponding to the image data signal between the plurality of pixel electrodes and the opposed electrode.