Display apparatus

1. A display apparatus comprising:

a pixel array including a plurality of pixels;

a first coil and a second coil, each coil including a pair of first electrodes which are in parallel with each other in a first direction above the pixel array and a same side of an edge of which are electrically connected; and

a detection circuit connected to one first electrode of the pair of first electrodes, wherein the first coil is arranged to partially overlap the second coil, wherein

each coil has a second electrode,

the second electrode extends parallel to the first electrodes in the first direction between the pair of first electrodes,

the second electrode has a first end connected to one of the first electrodes and a second end having a gap to the first electrodes, and

the second electrode has a thinner width than a width of the first electrode.

2. The display apparatus according to claim 1 , wherein

one of the pair of first electrodes of the second coil is located between the pair of the first electrodes of the first coil.

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

a drive electrode which extends in a second direction intersecting the first direction to intersect at least the first coil and the second coil,

wherein, when a magnetic field from the external object is detected, a driving signal is supplied to the drive electrode to generate a magnetic field, and an induced voltage is generated at the first or second coil.

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

a first substrate having a first main surface on which the drive electrode is formed;

a liquid crystal layer having optical characteristics that change in accordance with an electric potential; and

a second substrate having a second main surface arranged to be opposed to the first main surface of the first substrate across the liquid crystal layer,

wherein the first coil and the second coil are formed on a first main surface of the second substrate opposite to the second main surface.

5. A display apparatus comprising:

a pixel array including a plurality of pixels;

a first coil and a second coil, each coil including a pair of first electrodes which are in parallel with each other in a first direction above the pixel array and a same side of an edge of which are electrically connected; and

a detection circuit connected to one first electrode of the pair of first electrodes, wherein the first coil is arranged to partially overlap the second coil, wherein

in each coil, the pair of first electrodes have an electrode area which extends in the first direction and which has a predetermined width in a second direction intersecting the first direction in a plan view,

in the electrode area, a plurality of first electrode segments are arranged to be electrically connected to each other, and

each of the plurality of first electrode segments forms a closed octagonal area.

6. The display apparatus according to claim 5 ,

wherein the first electrode segment has

a plurality of short first electrode segment wirings which are arranged along four sides of the closed octagonal area and

a plurality of long first electrode segment wirings which are arranged along four sides of the closed octagonal area and each of which is longer than the short first electrode segment wiring to form a closed area having an octagonal shape, and,

in the electrode area, the short first electrode segment wiring arranged along one side of the first electrode segment is connected to the short first electrode segment wiring of another first electrode segment in the second direction by an inter-electrode wiring.

7. The display apparatus according to claim 5 , further comprising

a dummy electrode area which is arranged between at least the pair of first electrodes,

wherein, in the dummy electrode area, a plurality of dummy electrode segments which are electrically insulated from each other are arranged, each of the plurality of dummy electrode segments forms a closed octagonal area that is the same shape of the first electrode segment.

8. The display apparatus according to claim 7 ,

wherein the dummy electrode segment has a slit.

9. A display apparatus comprising:

a pixel array including a plurality of pixels;

a first coil and a second coil, each coil including a pair of first electrodes which are in parallel with each other in a first direction above the pixel array and a same side of an edge of which are electrically connected; and

a detection circuit connected to one first electrode of the pair of first electrodes, wherein the first coil is arranged to partially overlap the second coil, wherein

in the each coil, the pair of first electrodes have an electrode area which extends in the first direction and which has a predetermined width in a second direction intersecting the first direction in a plan view,

in the electrode area, a plurality of first diagonal lines correspond to the first direction and a plurality of the second diagonal lines crossing the first diagonal lines are arranged,

the first diagonal lines and the second diagonal lines form a plurality of closed rhombic areas.

10. The display apparatus according to claim 9 , further comprising:

a dummy electrode area which is arranged between at least the pair of first electrodes,

wherein, in the dummy electrode area, a plurality of first dummy lines are arranged in parallel to the first diagonal lines and a plurality of the second dummy lines are arranged in parallel to the second diagonal lines, and wherein each dummy line has a slit.