| 摘要 |
A liquid crystal device includes a first substrate, a second substrate, liquid crystal, a detection electrode, a liquid crystal capacitor, a storage capacitor, a switching element, a selection circuit, a signal supplying circuit, and an electric potential control circuit. The first substrate is opposed to the second substrate. The liquid crystal is sealed in a gap between the first substrate and the second substrate. The detection electrode is provided on a side of the first substrate, opposite to a side on which the liquid crystal is provided. The detection electrode detects a contact on the basis of variation in capacitance. The liquid crystal capacitor includes a pixel electrode, an opposite electrode, and the liquid crystal between the pixel electrode and the opposite electrode. The storage capacitor includes a first electrode and a second electrode that is connected to the pixel electrode. The switching element is connected between the pixel electrode and a signal line. The selection circuit conducts the switching element during a selection period and interrupts conduction of the switching element after the selection period has elapsed. The signal supplying circuit supplies a data electric potential (for example, an electric potential VDP or an electric potential VDN shown in FIG. 4 ) corresponding to positive polarity writing or negative polarity writing to the signal line during the selection period. The electric potential control circuit shifts an electric potential of the first electrode to a high level side after a selection period in which a data electric potential corresponding to the positive polarity writing is supplied to the signal line has elapsed, and shifts an electric potential of the first electrode to a low level side after a selection period in which a data electric potential corresponding to the negative polarity writing is supplied to the signal line has elapsed.
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