| CPC G02F 1/136286 (2013.01) [G02F 1/136254 (2021.01)] | 18 Claims |
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1. A liquid crystal apparatus comprising:
a first substrate;
a liquid crystal layer;
a second substrate facing the first substrate via the liquid crystal layer;
a first electrode disposed between the first substrate and the liquid crystal layer;
a second electrode disposed between the second substrate and the liquid crystal layer;
an electrode lead line disposed between the first substrate and the liquid crystal layer and electrically coupled to the first electrode;
a plurality of drive signal lines disposed between the first substrate and the liquid crystal layer and including a first drive signal line intersecting with the electrode lead line in plan view;
a first conductive layer disposed between the electrode lead line and the first drive signal line and electrically coupled to the second electrode; and
a measurement circuit electrically coupled to each of the first electrode and the second electrode, wherein
the measurement circuit
supplies a potential to each of the first electrode and the second electrode so that a potential difference between the first electrode and the second electrode becomes a first potential difference in a first period,
supplies a potential to each of the first electrode and the second electrode so that the potential difference becomes a second potential difference having a polarity different from that of the first potential difference in a second period after the first period, and
stops the supply of the potential to the first electrode and supplies the same potential to the second electrode as that in the second period in a third period after the second period.
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