DISPLAY DEVICE AND DRIVING METHOD THEREOF
First Claim
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 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.
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Accused Products
Abstract
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.
23 Citations
20 Claims
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1. A display device, comprising:
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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 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A driving method of a display device displaying an image through a plurality of pixels each of which is connected to a plurality of data lines, a plurality of scan lines, and a plurality of light emitting control lines and includes a plurality of organic light emitting diodes (OLEDs), the driving method comprising:
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applying first voltage level of light emitting signals to light emitting control lines of a first light emitting group among a plurality of light emitting groups during a first period to block a supply of current to the OLED of the first pixel group corresponding to the first light emitting group; applying second voltage level of light emitting signals to light emitting control lines of the first light emitting group during a second period to transfer current corresponding to a plurality of first data voltages to the OLED of the first pixel group; and determining a touch from the outside, based on a sensing signal of a first touch sensing unit formed on the first pixel group during the first period. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification