Display device
A display device includes: a substrate (first substrate); a substrate (second substrate); a pixel electrode on the first substrate; a common electrode on the first substrate; a signal line existing on the first substrate and extending in a Y direction (first direction); a drive electrode (first electrode) existing on the second substrate and extending in the Y direction; a detection electrode (second electrode) existing on the second substrate and over the drive electrode, extending in an X direction (second direction) intersecting with the Y direction, and electrically connected to a detection circuit. Additionally, the drive electrode intersects with the detection electrode and overlaps the signal line.
1. A display device comprising:
a first substrate;
a second substrate;
a pixel electrode on the first substrate;
a common electrode on the first substrate;
a first signal line existing on the first substrate and extending in a first direction;
a light shielding film including a plurality of first light shielding portions extending in the first direction, and a plurality of second light shielding portions extending in a second direction intersecting with the first direction;
a first electrode existing on the second substrate and extending in the first direction; and
a second electrode existing over the first electrode, extending in the second direction and electrically connected to a detection circuit,
wherein the first electrode includes:
a plurality of first portions overlapping any of the plurality of first light shielding portions and extending the first direction, and
a second portion arranged between the first portions and extending the second direction;
the second portion includes:
a plurality of first regions not overlapping the light shielding film,
a plurality of second regions overlapping any of the plurality of second light shielding portions;
in the first direction, the plurality of first regions and the plurality of second regions are alternately arranged,
the plurality of first portions and the second portion of the first electrode intersects with the second electrode,
each of the plurality of first portions of the first electrode overlaps the first signal line,
a period in which the display device operates includes a display period for forming a display image, and a detection period for detecting an input,
in the display period, the same potential is supplied to each of the first electrode and the common electrode, and
in the detecting period, a potential different from that in the display period is supplied to the first electrode.
2. The display device according to claim 1 ,
wherein a material of the plurality of first portions of the first electrode is metal, and a material of the second electrode is a transparent conductive material.
3. The display device according to claim 2 ,
wherein the second substrate comprises:
a color filter layer;
an organic insulating film covering the color filter layer; and
the light shielding film existing between the organic insulating film and the first substrate and extending in the first and second directions, and
the first electrode is between the light shielding film and the first substrate.
4. The display device according to claim 1 ,
wherein a width of each of the plurality of first light shielding portions is narrower than that of each of the plurality of second light shielding portions, and
the plurality of first portions includes a first conductive pattern and a second conductive pattern, the first conductive pattern containing a metal material, and the second conductive pattern including a portion that overlaps the first conductive pattern and containing a transparent conductive material.
5. The display device according to claim 4 ,
wherein the second substrate comprises:
a color filter layer;
an organic insulating film covering the color filter layer; and
the light shielding film existing between the organic insulating film and the first substrate and extending in the first and second directions, and
the first electrode is between the light shielding film and the first substrate.
6. The display device according to claim 1 ,
wherein the second portion of the first electrode contains a transparent conductive material.
7. The display device according to claim 6 ,
wherein a width of the second electrode is narrower than a first-direction width of one out of the first portions.
8. The display device according to claim 7 ,
wherein the second substrate comprises:
a color filter layer;
an organic insulating film covering the color filter layer; and
the light shielding film existing between the organic insulating film and the first substrate and extending in the first and second directions, and
the first electrode is between the light shielding film and the first substrate.
9. The display device according to claim 6 ,
wherein the second substrate comprises:
a color filter layer;
an organic insulating film covering the color filter layer; and
the light shielding film existing between the organic insulating film and the first substrate and extending in the first and second directions, and
the first electrode is between the light shielding film and the first substrate.
10. The display device according to claim 1 ,
wherein the second substrate comprises:
a color filter layer;
an organic insulating film covering the color filter layer; and
a light shielding film existing between the organic insulating film and the first substrate and extending in the first and second directions, and
the first electrode is between the light shielding film and the first substrate.
11. The display device according to claim 1 , further comprising:
a base substrate existing on the second substrate and made of an insulating material;
a first wiring having a portion, the portion extending along the first direction; and
a penetration electrode passing through the base substrate on the second substrate,
wherein the second substrate has the second electrode on a surface opposite to a surface opposing the first substrate,
the penetration electrode electrically connects the second electrode and the first wiring, and
the second electrode is electrically connected to the detection circuit via the penetration electrode and the first wiring.
12. The display device according to claim 11 , further comprising:
a plurality of penetration electrodes composed of the penetration electrode, the plural penetration electrodes penetrating the base substrate on the second substrate,
wherein the second substrate includes a display region, a first non-display region existing on a first side of the display region in the second direction, and a second non-display region existing on a second side of the display region in the second direction, and
the plural penetration electrodes are in the first and second non-display regions.