Display device including touch sensor and driving method thereof
View Patent ↗A display device including a touch sensor and a driving method thereof, and more particularly, a curved display device including a touch sensor and a driving method thereof, are presented. The display device includes: a touch sensor unit including a plurality of touch sensors; and at least one touch surface curved to along a first direction, wherein the touch surface includes a center region and edge regions positioned at both sides of the center region along the first direction, and wherein a sensitivity of the touch sensor in the center region is higher than a sensitivity of the touch sensors in the edge regions.
1. An organic light emitting display device comprising:
a display panel comprising a plurality of pixels, a plurality of signal lines and a plurality of thin film transistors, the plurality of pixels including a plurality of light emitting layers between pixel electrodes and an opposed electrode;
an encapsulation layer on the display panel;
an insulating layer on the encapsulation layer; and
a touch sensor unit including a plurality of touch sensors and a plurality of touch wires on the insulating layer, wherein
the display panel is concavely curved along a first direction,
the insulating layer is concavely curved along the first direction,
the encapsulation layer includes at least one inorganic insulating layer and an organic insulating layer,
the touch sensor unit includes a center region and edge regions positioned at both sides of the center region along the first direction,
the display panel is substantially entirely overlapped with the touch sensor unit, and
a sensitivity of the touch sensor in the center region is higher than a sensitivity of the touch sensor in the edge regions in a hovering touch mode.
2. The organic light emitting display device of claim 1 , further comprising:
a touch driver for driving the plurality of touch sensors, wherein
a sensing input signal which the touch driver inputs into the touch sensor in the center region has a higher voltage than a sensing input signal which the touch driver inputs into the touch sensors in the edge regions.
3. The organic light emitting display device of claim 1 , wherein
the plurality of touch sensors comprises a plurality of first touch electrodes arranged in a second direction on the insulating layer, and a plurality of second touch electrodes arranged in a third direction on the insulating layer, and
the first touch electrodes and the second touch electrodes are on a same layer,
the second touch electrodes are alternately arranged with the first touch electrodes so that the second touch electrodes do not overlap the first touch electrodes in a plan view, and
the first touch electrodes and the second touch electrodes have a substantially polygon shape, respectively.
4. The organic light emitting display device of claim 1 , wherein the touch sensors in the center region are not connected to the touch sensors in the edge region.
5. The organic light emitting display device of claim 1 , wherein
the plurality of touch sensors comprises a plurality of first touch electrodes arranged in a second direction on the insulating layer, and a plurality of second touch electrodes arranged in a third direction on the insulating layer, and
an area of the first touch electrode in the center region is different from an area of the first touch electrode in the edge region.
6. An organic light emitting display device comprising:
a display panel comprising a plurality of pixels, a plurality of signal lines and a plurality of thin film transistors, the plurality of pixels including a plurality of light emitting layers between pixel electrodes and an opposed electrode;
an encapsulation layer on the display panel;
an insulating layer on the encapsulation layer; and
a touch sensor unit including a plurality of touch sensors and a plurality of touch wires on the insulating layer, wherein
the plurality of touch sensors comprises a plurality of first sense cells arranged in a first direction on the insulating layer, and a plurality of second sense cells arranged in a second direction on the insulating layer,
the display panel has a first portion, a second portion and a third portion, the first portion and the second portion are curved, and the third portion between first portion and second portion is substantially flat,
the insulating layer including the touch sensor unit has a fourth portion, a fifth portion and a sixth portion, the fourth portion and the fifth portion are curved, and the sixth portion between the fourth portion and the fifth portion is substantially flat,
the first portion is substantially entirely overlapped with the fourth portion in a plan view,
the second portion is substantially entirely overlapped with the fifth portion in the plan view,
the third portion is substantially entirely overlapped with the sixth portion in the plan view,
the encapsulation layer includes at least one inorganic insulating layer and an organic insulating layer,
the first sense cells and the second sense cells are on a same layer,
the second sense cells are alternately arranged with the first sense cells so that the second sense cells do not overlap the first sense cells in the plan view,
the first sense cells and the second sense cells have a substantially polygon shape, respectively,
the touch sensors are metal mesh, and
a touch sensing sensitivity at the fourth portion or the fifth portion is different from a touch sensing sensitivity at the sixth portion.
7. The organic light emitting display device of claim 6 , wherein an area of the first sense cell in the sixth portion is different from an area of the first sense cell in the fourth portion or the fifth portion.
8. The organic light emitting display device of claim 6 , wherein the touch sensing sensitivity at the fourth portion or the fifth portion is lower than the touch sensing sensitivity at the sixth portion.
9. An organic light emitting display device comprising:
a display panel comprising a plurality of pixels, a plurality of signal lines and a plurality of thin film transistors, the plurality of pixels including a plurality of light emitting layers between pixel electrodes and an opposed electrode;
an encapsulation layer on the display panel;
an insulating layer on the encapsulation layer; and
a touch sensor unit including a plurality of touch sensors and a plurality of touch wires on the insulating layer, wherein
the display panel includes a center region and edge regions positioned at both sides of the center region,
the touch sensor unit on the insulating layer includes a center region and edge regions positioned at both sides of the center region,
the encapsulation layer includes at least one inorganic insulating layer and an organic insulating layer,
the display panel is substantially entirely overlapped with the touch sensor unit, and
a touch sensing sensitivity at the center region of the touch sensor unit is different from a touch sensing sensitivity at the edge region of the touch sensor unit.
10. The organic light emitting display device of claim 9 , wherein
the plurality of touch sensors comprises a plurality of first touch electrodes arranged in a first direction on the insulating layer, and a plurality of second touch electrodes arranged in a second direction on the insulating layer,
the first touch electrodes and the second touch electrodes are on a same layer,
the second touch electrodes are alternately arranged with the first touch electrodes so that the second touch electrodes do not overlap the first touch electrodes in a plan view, and
the first touch electrodes and the second touch electrodes have a substantially polygon shape, respectively.
11. The organic light emitting display device of claim 10 , wherein
an area of the first touch electrode in the center region of the touch sensor unit is different from an area of the first touch electrode in the edge region of the touch sensor unit.
12. The organic light emitting display device of claim 10 , wherein
the touch sensing sensitivity at the edge region of the touch sensor unit is lower than the touch sensing sensitivity at the center region of the touch sensor unit.
13. The organic light emitting display device of claim 9 , wherein
the plurality of touch sensors comprises a plurality of touch electrodes, each of the touch electrodes disposed at different locations in a plane of the touch sensor unit, and
each of the touch electrodes is connected with each of the touch wires.
14. The organic light emitting display device of claim 13 , wherein
an area of the touch electrode in the center region of the touch sensor unit is different from an area of the touch electrode in the edge region of the touch sensor unit.
15. The organic light emitting display device of claim 13 , wherein
the touch sensing sensitivity at the edge region of the touch sensor unit is lower than the touch sensing sensitivity at the center region of the touch sensor unit.
16. The organic light emitting display device of claim 9 , wherein
the touch sensing sensitivity at the edge region of the touch sensor unit is lower than the touch sensing sensitivity at the center region of the touch sensor unit.
17. An organic light emitting display device comprising:
a display panel comprising a plurality of pixels, a plurality of signal lines and a plurality of thin film transistors, the plurality of pixels including a plurality of light emitting layers between pixel electrodes and an opposed electrode;
an encapsulation layer on the display panel;
an insulating layer on the encapsulation layer; and
a touch sensor unit including a plurality of touch sensors and a plurality of touch wires on the insulating layer, wherein
the display panel includes a center region, a first edge region and a second edge region, the first edge region and the second edge region positioned at both sides of the center region,
the display panel includes a first boundary between the center region and the first edge region,
the display panel includes a second boundary between the center region and the second edge region,
the touch sensor unit on the insulating layer includes a center region and edge regions positioned at both sides of the center region,
the encapsulation layer includes at least one inorganic insulating layer and an organic insulating layer,
the display panel is substantially entirely overlapped with the touch sensor unit, and
a touch sensing sensitivity at the center region of the touch sensor unit is different from a touch sensing sensitivity at the edge region of the touch sensor unit.
18. The organic light emitting display device of claim 17 , wherein
the plurality of touch sensors comprises a plurality of first touch electrodes on the first edge region, a plurality of second touch electrodes on the center region and a plurality of third touch electrodes on the second edge region,
the first touch electrodes are not connected to the second touch electrodes, and
the second touch electrodes are not connected to the third touch electrodes.
19. The organic light emitting display device of claim 18 , wherein an area of the first touch electrode is different from an area of the second touch electrode.
20. The organic light emitting display device of claim 17 , wherein the touch sensing sensitivity at the edge region of the touch sensor unit is lower than the touch sensing sensitivity at the center region of the touch sensor unit.