Patent ID: 9734769
Date: 2017-08-15
CPC Classifications: G06F,G09G

Claim:
1. A display apparatus comprising: a first substrate; a second substrate that is disposed so as to face the first substrate; an electrophoresis layer sandwiched between the first substrate and the second substrate; a plurality of first electrodes formed in a first region on a first main surface of the first substrate; a plurality of second electrodes formed in a second region on a second main surface of the second substrate; a first driving unit for supplying a first driving signal and a second driving signal to the plurality of the second electrodes; and a first detection unit for detecting an input position based on electrostatic capacitance of each of the plurality of the second electrodes, wherein the first region is divided into a first plural number of first partial regions, the second region is divided into a second plural number of second partial regions, the second plural number being smaller than the first plural number, any one or more of the plurality of the first electrodes is disposed in each of the first plural number of the first partial regions, any one or more of the plurality of the second electrodes is disposed in each of the first plural number of the first partial regions, any one or more of the plurality of the second electrodes is disposed in each of the second plural number of the second partial regions, the first driving unit performs a repeat process which repeats alternately a first driving process for supplying the first driving signal to a second electrode of the plurality of the second electrodes which is disposed in the first partial region selected from the first plural number of the first partial regions, and a second driving process for supplying the second driving signal to a second electrode of the plurality of the second electrodes which is disposed in the second partial region selected from the second plural number of the second partial regions, in the first driving process, the first driving unit forms an electric field between the second electrode disposed in the selected first partial region and the first electrode of the plurality of the first electrodes which is disposed in the selected first partial region, so that an image is displayed in the selected first partial region, in the second driving process, the first detection unit detects an input position in the selected second partial region based on an electrostatic capacitance of the second electrode disposed in the selected second partial region, and, in the repeat process, the first driving unit alternately repeats the first driving process and the second driving process while successively cyclically changing the first partial region selected from the first plural number of the first partial regions and successively cyclically changing the second partial region selected from the second plural number of the second partial regions.