| 摘要 |
PROBLEM TO BE SOLVED: To reduce an influence of a fictitious touch [ghost] in touch detection.SOLUTION: A liquid crystal display device having an in-cell method liquid crystal display device includes: means 1 that, when a touch panel scanning voltage is supplied to a counter electrode of each of M(M≥2) divided blocks, detects presence/absence of a touch on the basis of an electric current flowing to a plurality of detection electrodes; and means 2 that, assuming that a (M+1)-th counter electrode exists for the counter electrode of each of the M sub-divided blocks and assuming that the touch panel scanning voltage in synchronization with the touch panel scanning voltage to be supplied to the counter electrode of each of the M sub-divided blocks has been supplied to the (M+1)-th counter electrode, detects noise on the basis of the electric curent flowing to the plurality of detection electrodes. |
