Display device and driving method thereof

摘要

A display device including: a plurality of first electrodes each corresponding to a plurality of light emitting groups on a plurality of pixels including organic light emitting diodes (OLEDs) and a plurality of second electrodes formed on the plurality of first electrodes, having an insulating layer therebetween, wherein a plurality of touch sensing signals are applied to each of the plurality of first electrodes during a non-light emitting period of each of the plurality of light emitting groups and a touched position is determined in response to a magnitude in voltage between the first and second electrodes by a touch from the outside.

主权项

1. A display device, comprising: a display unit which includes a plurality of pixels including organic light emitting diodes (OLEDs), the plurality of pixels being divided into a plurality of light emitting groups; a light emitting driving unit which generates a plurality of light emitting signals controlling a light emitting period and a non-light emitting period of each of the plurality of light emitting groups; a touch sensing unit which includes a plurality of first electrodes formed on the plurality of pixels in a first direction and corresponding to each of the plurality of light emitting groups, and a plurality of second electrodes formed on the plurality of first electrodes in a second direction, having an insulating layer therebetween, and outputs a magnitude of voltage between the first electrode and the second electrode by a touch from the outside as a sensing signal; and a touch determination unit which applies a plurality of touch scan signals to each of the plurality of first electrodes during the non-light emitting period of each of the plurality of light emitting groups and determines a touched position in response to the sensing signal of the touch sensing unit, wherein the touch determination unit includes a plurality of signal controllers which generate the plurality of touch scan signals, and each of the plurality of signal controllers includes: a plurality of first transistors which are turned on in response to each of the plurality of scan signals applied to the plurality of scan lines to output a voltage level higher than a first power supply voltage: and a plurality of second transistors which output the first power supply voltage in response to a light emitting signal applied to the corresponding light emitting group.