Display apparatus that includes electrodes in a frame area
A display apparatus includes a first substrate, a second substrate, a display functional layer, first electrodes, second electrodes, third electrodes, and a drive circuit. The second substrate faces the first substrate. The display functional layer is provided between the first substrate and the second substrate and used to display an image in a display area. The first electrodes are provided in the display area between the first substrate and the second substrate. The second electrodes are provided, facing the first electrodes, in the display area on the surface of the second substrate. The third electrodes are provided in a frame area on the outer side of the display area. The drive circuit supplies a first drive signal to at least one of the first electrodes and the second electrodes.
1. A display apparatus comprising:
a first substrate;
a second substrate facing the first substrate;
a display functional layer provided between the first substrate and the second substrate and configured to display an image in a display area;
first electrodes provided in the display area between the first substrate and the second substrate;
second electrodes provided in the display area on a surface of the second substrate, the second electrodes facing the first electrodes, wherein the second electrodes are divided into a first group of second electrodes that includes at least one of the second electrodes and a second group of second electrodes that includes the remaining second electrodes;
third electrodes provided in a frame area on an outer side of the display area; and
a drive circuit configured to supply a first drive signal to the first electrodes and the second group of second electrodes in a first detection period,
wherein, in the first detection period, the third electrodes output a first detection signal based on a change in capacitance between the third electrodes and at least one of:
the first electrodes that overlap the second electrodes; or
the second group of second electrodes; and
wherein, in the first detection period, the first group of second electrodes outputs a second detection signal based on a change in capacitance between the first electrodes and the first group of second electrodes.
2. The display apparatus according to claim 1 , wherein
the drive circuit is configured to output a second drive signal different from the first drive signal to the first electrodes in a second detection period different from the first detection period, and
the second electrodes output the second detection signal based on a change in capacitance between the second electrodes and the first electrodes in the second detection period.
3. The display apparatus according to claim 2 , wherein the third electrodes are supplied with a guard signal for suppressing stray capacitance in the second electrodes in the second detection period.
4. The display apparatus according to claim 3 , wherein the guard signal is a DC voltage signal having a same electric potential as an electric potential of the second electrodes.
5. The display apparatus according to claim 1 , wherein the first group of second electrodes is positioned at a center in a direction in which the second electrodes are arrayed.
6. The display apparatus according to claim 1 , wherein the first group of second electrodes is positioned on an outer side in a direction in which the second electrodes are arrayed.
7. The display apparatus according to claim 1 , wherein the second group of second electrodes are arrayed in a first direction along a side of the frame area and provided along a second direction intersecting with the first direction.
8. The display apparatus according to claim 7 , wherein the third electrodes include a first portion provided along the first direction and arranged adjacent to ends of the second group of second electrodes.
9. The display apparatus according to claim 7 , wherein the third electrodes include a second portion provided along the second direction and arranged side by side with the second group of second electrodes in the first direction.
10. The display apparatus according to claim 7 , wherein the third electrodes include a first portion provided along the first direction and a second portion coupled to an end of the first portion and provided along the second direction.
11. The display apparatus according to claim 1 , further comprising: pixel electrodes facing the first electrodes, wherein the drive circuit is configured to supply a display drive signal serving as a common potential to the first electrodes in a display operation.
12. A detection device comprising:
a first substrate;
first electrodes provided in a first area on the first substrate,
second electrodes provided on a surface of a second substrate facing the first substrate in the first area, the second electrodes facing the first electrodes, wherein the second electrodes are divided into a first group of second electrodes that includes at least one of the second electrodes and a second group of second electrodes that includes the remaining second electrodes;
third electrodes provided in a second area outside the first area; and
a drive circuit configured to supply a first drive signal to the first electrodes and the second group of second electrodes in a first detection period,
wherein, in the first detection period, the third electrodes output a first detection signal based on a change in capacitance between the third electrodes and at least one of: the first electrodes that overlap the second electrodes; or
the second group of second electrodes; and
wherein, in the first detection period, the first group of second electrodes outputs a second detection signal based on a change in capacitance between the first electrodes and the first group of second electrodes.