Patent ID: 8633899

Claim:
A liquid crystal display device comprising: a liquid crystal display panel comprising a first substrate and a second substrate spaced apart by a distance t, and a liquid crystal layer disposed therebetween; a sensing unit disposed between the first substrate and second substrate, the sensing unit comprising at least two touch sensors disposed adjacent to each other, each of the touch sensors comprising a conductive pad and a conductive column spacer spaced apart from the conductive pad and configured to generate an output signal in response to a compression of the liquid crystal display panel; and a touch sensor controller in communication with the sensing unit, the touch sensor controller configured to receive the output signal and configured to generate coordinates information based on the output signal, wherein the touch sensor controller generates the coordinates information when all of the at least two touch sensors generate an output signal and does not generate the coordinates information when at least one but less than all of the at least two touch sensors generate an output signal.