INPUT DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS

摘要

It is an object of the present invention to enhance detection accuracy during a touch operation in a capacitance coupling type input device. The input device includes a plurality of driving electrodes and a plurality of detection electrodes crossing each other, and capacitive elements formed in respective crossed portions between the driving electrodes and the detection electrodes. During a touch detection period, a driving signal is applied to the driving electrodes on a line block basis of scanning signal lines, and touch is detected based on a detection signal output from each of the detection electrodes, and the touch detection period is provided in a display update period in a horizontal scanning period of a display apparatus. Further, a driving signal to be applied to the driving electrodes is applied to a selected line block of the display apparatus to which the scanning signal is not being applied.

主权项

1. An input device provided in a display apparatus for updating a display by sequentially applying a scanning signal to a plurality of scanning signal lines during one frame period,
the input device comprising: a plurality of driving electrodes and a plurality of detection electrodes crossing each other; and capacitive elements formed in respective crossed portions between the driving electrodes and the detection electrodes, wherein, during a touch detection period, a driving signal is applied to the driving electrodes on a line block basis of the scanning signal lines, and touch is detected based on a detection signal output from each of the detection electrodes, the touch detection period is provided in a display update period in a horizontal scanning period of the display apparatus, and a driving signal to be applied to the driving electrodes is configured so as to be applied to a selected line block of the display apparatus to which the scanning signal is not being applied.