Touch sensing unit and display device including the same
A touch sensing unit includes first touch electrodes, a first touch signal line, and a second touch signal line. The first touch electrodes are disposed in a touch sensor area. The first touch signal line is electrically connected to some of the first touch electrodes arranged in a first column. The second touch signal line is electrically connected to some of the first touch electrodes arranged in a second column different from the first column. The second touch signal line includes a first bent portion bent at least once in an intersection region of the first touch signal line and the second touch signal line.
1. A display device, comprising:
a display unit configured to display an image, and comprising a plurality of scan lines connected to a plurality of pixels, respectively, for supplying scan signals; and
a touch sensing unit configured to sense a touch, and comprising:
first and second touch electrodes disposed in a first touch sensor area, a second touch sensor area protruding from one side of the first touch sensor area in a first direction, and a third touch sensor area protruding from the one side of the first touch sensor area in the first direction, wherein the first touch electrodes are disposed in the first direction in each of a plurality of columns, and the second touch electrodes are disposed in a second direction intersecting the first direction in each of a plurality of rows;
a first connection line connected to a second touch electrode of the second touch sensor area and a second touch electrode of the third touch sensor area from among the second touch electrodes;
a plurality of touch driving lines electrically connected to the first touch electrodes, and configured to receive a plurality of touch driving pulses; and
a plurality of touch sensing lines electrically connected to the second touch electrodes,
wherein the plurality of touch sensing lines are configured to sense charge amounts of mutual capacitances between the first and second touch electrodes, and a touch sensing line connected to at least one of the second touch electrode of the second touch sensor area or the second touch electrode of the third touch sensor area from among the plurality of touch sensing lines is configured to sense the charge amounts transferred by the first connection line between the second touch electrode of the second touch sensor area and the second touch electrode of the third touch sensor area.
2. The display device of claim 1 , wherein an area is between the second touch sensor area and the third touch sensor area in the second direction.
3. The display device of claim 2 , wherein the first touch sensor area is larger than an area of the second touch sensor area, and
wherein the first touch sensor area is larger than an area of the third touch sensor area.
4. The display device of claim 2 , wherein the first and second touch electrodes are not disposed in the area.
5. The display device of claim 2 , wherein the first connection line is disposed in the area between the second touch sensor area and the third touch sensor area.
6. The display device of claim 1 , wherein the second touch electrode of the second touch sensor area is adjacent to a first side of the second touch sensor area which is opposite to the third touch sensor area in the second direction, and
wherein the second touch electrode of the third touch sensor area is adjacent to a first side of the third touch sensor area which is opposite to the second touch sensor area in the second direction.
7. The display device of claim 1 , wherein the first connection line is disposed in a different layer from the first touch electrodes and the second touch electrodes.
8. The display device of claim 1 , wherein the touch sensing unit further comprises:
first touch signal lines connected to the first touch electrodes disposed at one side of the columns, respectively; and
second touch signal lines connected to the second touch electrodes disposed at one side of the rows, respectively.
9. The display device of claim 8 , wherein the first connection line is disposed on a same layer as the first touch signal lines and second touch signal lines.
10. The display device of claim 8 , wherein the touch sensing unit further comprises:
a substrate on which the first touch signal lines, the second touch signal lines, and the first connection line are disposed; and
a first insulating film disposed on the first touch signal lines, the second touch signal lines, and the first connection line,
wherein the first touch electrodes and the second touch electrodes are disposed on the first insulating film.
11. The display device of claim 8 , wherein maximum widths of the second touch signal lines are different from each other.
12. The display device of claim 8 , wherein maximum widths of the second touch signal lines decrease as the second touch signal lines become closer to the first touch sensor area.
13. The display device of claim 8 , wherein a first maximum width of a first sub touch line adjacent to the first touch sensor area among the second touch signal lines is smaller than a second maximum width of a second sub touch line adjacent to an edge of a substrate among the second touch signal lines.
14. The display device of claim 13 , wherein a length of the first sub touch line is longer than a length of the second sub touch line.
15. The display device of claim 13 , wherein a third maximum width of a third sub touch line between the first sub touch line and the second sub touch line in the second direction is greater than the first maximum width and less than the second maximum width.
16. The display device of claim 15 , wherein a length of the third sub touch line is longer than a length of the first sub touch line and less than a length of the second sub touch line.
17. The display device of claim 8 , wherein the touch sensing unit further comprises:
a guard line between the first touch sensor area and a first sub touch line adjacent to the first touch sensor area among the second touch signal lines.
18. The display device of claim 17 , wherein the guard line is between the first sub touch line and one of the first touch signal lines.
19. The display device of claim 17 , wherein a ground voltage is applied to the guard line.
20. The display device of claim 1 , wherein the second touch sensor area protrudes from one edge of one side of the first touch sensor area, and the third touch sensor area protrudes from an another edge of the one side of the first touch sensor area.