Display device

1. A display device comprising:

a substrate;

a plurality of pixel electrodes disposed on the substrate;

M (M is a natural number equal to or greater than three) counter electrodes disposed opposite the plurality of pixel electrodes;

M counter electrode wiring lines connected to the M counter electrodes; and

N (N is a natural number and 2≤N<M) common voltage wiring lines connected to the M counter electrode wiring lines; wherein

counter electrode wiring lines connected to counter electrodes adjacent to each other are connected to common voltage wiring lines different from each other;

the M counter electrodes are at least partially aligned along a first direction and a second direction different from the first direction; and

in the M counter electrodes, a plurality of counter electrodes arranged continuously in the first direction have a uniform length in the second direction, and plurality of counter electrodes arranged continuously in the second direction have a uniform length in the first direction.

2. The display device according to claim 1 ,

wherein at least some of the M counter electrodes are adjacent to, on at least one side of the M counter electrodes, a plurality of other counter electrodes.

3. The display device according to claim 1 , further comprising:

a control circuit configured to apply, as short-circuit inspection voltage of a counter electrode, a first voltage to a common voltage wiring line of the N common voltage wiring lines, and apply a second voltage different from the first voltage to other common voltage wiring lines to detect a current in the N common voltage wiring lines.

4. The display device according to claim 3 , further comprising:

M switching elements connected to the M counter electrode wiring lines, respectively,

wherein the M switching elements are in an on state before the first voltage and the second voltage are applied to the N common voltage wiring lines, and

the M counter electrodes are connected to the N common voltage wiring lines via the M common voltage wiring lines in a case where the M switching elements are in an on state.

5. The display device according to claim 1 , further comprising:

a plurality of source lines connected to the plurality of pixel electrodes; and

a plurality of gate lines intersecting the plurality of source lines,

wherein the plurality of gate lines are sequentially scanned,

the plurality of source lines are applied with a data voltage corresponding to a predetermined pattern image in a case where each of the plurality of gate lines is scanned, and adjacent source lines are applied with data voltages of mutually different polarities, and

each of the N common voltage wiring lines is applied with a predetermined common voltage.