Patent ID: 8633905
Filing Date: 2014-01-21
Classification: G02F,G06F

Abstract:
1. A display comprising: a plurality of display pixel electrodes; a plurality of common electrodes arranged to face the display pixel electrodes; a display layer; a display control circuit performing image display control based on an image signal so as to activate the display layer by applying a voltage for display between the display pixel electrodes and the common electrodes; a plurality of touch detection electrodes facing the common electrodes or each arranged side by side with each of the common electrodes to form a capacitance between each of the touch detection electrodes and each of the common electrodes; and a touch detection circuit detecting an external proximity object based on a detection signal obtained from the touch detection electrodes with use of a common drive voltage for display applied to the common electrodes by the display control circuit as a touch sensor drive signal, wherein the touch detection circuit includes: an A/D (analog-digital) converter section performing sampling of a detection signal obtained from each of the touch detection electrodes at three or more different sampling frequencies to produce three or more sampling detection signals, and a detection section performing a detection operation based on the three or more sampling detection signals, and further wherein the detection section performs a majority rule operation with the three or more sampling detection signals, and performs a detection operation with use of one sampling detection signal obtained by the majority rule operation.