Display apparatus with driving electrodes and auxiliary electrodes
In a display apparatus provided with an electrophoresis layer, such a display apparatus capable of operating a driving electrode for use in displaying an image as an electrode for use in detecting an input position is provided. A display apparatus includes: a substrate; another substrate that is disposed so as to face the substrate; an electrophoresis layer sandwiched between the substrate and another substrate; a plurality of pixel electrodes formed on the substrate; and a plurality of driving electrodes formed on another substrate. An electric field is formed between each of the plurality of pixel electrodes and each of the plurality of driving electrodes, so that an image is displayed, and an input position is detected based on an electrostatic capacitance of each of the plurality of driving electrodes.
1. A display apparatus comprising:
a first substrate having a first main surface;
a second substrate having a second main surface, and disposed so as to face the first substrate so that the first main surface and the second main surface face each other;
a plurality of pixel electrodes formed on the first substrate;
a plurality of first driving electrodes formed on the second main surface of the second substrate, each of the plurality of first driving electrodes extended in a first direction and arranged in a second direction that intersects with the first direction as seen in a plan view;
a plurality of second driving electrodes formed on the second main surface of the second substrate, each of the plurality of the second driving electrodes extended in the second direction and arranged in the first direction as seen in the plan view;
a plurality of auxiliary electrodes formed on the first main surface of the first substrate, each of the plurality of auxiliary electrodes extended in the first direction and arranged in the second direction;
an electrophoresis layer provided between the plurality of the first and second driving electrodes and the plurality of auxiliary electrodes;
a driving electrode driver coupled to the first and second driving electrodes, wherein the driving electrode driver supplies a display driving signal to the plurality of the first and the second driving electrodes in a display period, and supplies a touch detection driving signal to the plurality of the first driving electrodes in a touch detection period after the display period; and
wherein an electrostatic capacitance between each of the plurality of the first driving electrodes and each of the plurality of the second driving electrodes is produced in the touch detection period,
wherein the plurality of auxiliary electrodes couple to the plurality of the first driving electrodes, and each potential of the plurality of the auxiliary electrodes is kept as same as that of the first driving electrode which the auxiliary electrode is coupled to.
2. The display apparatus according to claim 1 ,
wherein a distance between an upper surface of each of the plurality of pixel electrodes and a lower surface of each of the plurality of first driving electrodes is 30 to 200 μm.
3. The display apparatus according to claim 1 ,
wherein the electrophoresis layer includes a plurality of capsules, and
a plurality of electrophoretic particles are sealed inside each of the plurality of capsules.