Pad electrode part and touch sensor therewith
A pad electrode part includes a plurality of pad electrodes transmitting a sensing signal of a sensing cell part to a flexible printed circuit board (FPCB). The pad electrode includes a plurality of widthwise arrangement groups arranged spaced apart in a width direction, and the plurality of widthwise arrangement groups are arranged to be spaced apart in a longitudinal direction as well. A pad electrode of the first widthwise arrangement group and a pad electrode of the second widthwise arrangement group have a same area but different lengths and widths.
1. A pad electrode part comprising a plurality of pad electrodes transmitting a sensing signal received from a wiring part to a flexible printed circuit board (FPCB), the plurality of pad electrodes including:
a first group of pad electrodes arranged spaced apart in a width direction, and
a second group of pad electrodes arranged spaced apart in a width direction and spaced apart from the first group of pad electrodes in a longitudinal direction,
wherein all pad electrodes of the first group of pad electrodes have same lengths and same widths, and all pad electrodes of the second group of pad electrodes have same lengths and same widths, and
a pad electrode of the first group of pad electrodes and a pad electrode of the second group of pad electrodes have a same area but different lengths and widths.
2. The pad electrode part according to claim 1 , wherein
the second group of pad electrodes is disposed closer to a sensing cell part than the first group of pad electrodes, and
the pad electrode of the second group of pad electrodes is shorter in length and wider in width than the pad electrode of the first group of pad electrodes.
3. The pad electrode part according to claim 2 , wherein the pad electrode of the second group of pad electrodes is disposed between wires connected to the pad electrodes of the first group of pad electrodes.
4. The pad electrode part according to claim 2 , wherein at least a part of the pad electrode of the second group of pad electrodes overlaps with a wire connected to the pad electrode of the first group of pad electrodes, and the pad electrode part further comprises:
an insulation layer coupled between the wire and the pad electrode; and
a second row contact portion penetrating the insulation layer to connect the pad electrode of the second group of pad electrodes with a second row wire corresponding to the pad electrode of the second group of pad electrodes.
5. The pad electrode part according to claim 4 , further comprising a first row contact portion penetrating the insulation layer to connect the pad electrode of the first group of pad electrodes with a first row wire corresponding to the pad electrode of the first group of pad electrodes.
6. The pad electrode part according to claim 1 , wherein
the second group of pad electrodes is disposed closer to a sensing cell part than the first group of pad electrodes, and
the pad electrode of the second group of pad electrodes is longer in length and narrower in width than the pad electrode of the first group of pad electrodes.
7. The pad electrode part according to claim 6 , wherein the pad electrode of the second group of pad electrodes is disposed between wires connected to the pad electrodes of the first group of pad electrodes.
8. The pad electrode part according to claim 1 , wherein a length of the pad electrode of the first group of pad electrodes is different from a width of the pad electrode of the second group of pad electrodes.
9. The pad electrode part according to claim 1 , wherein a width of the pad electrode of the first group of pad electrodes is different from a length of the pad electrode of the second group of pad electrodes.
10. A touch sensor comprising the pad electrode part according to claim 1 .
11. A mobile terminal comprising the touch sensor according to claim 10 .
12. A touch sensor comprising the pad electrode part according to claim 2 .
13. A touch sensor comprising the pad electrode part according to claim 3 .
14. A touch sensor comprising the pad electrode part according to claim 4 .
15. A touch sensor comprising the pad electrode part according to claim 5 .
16. A touch sensor comprising the pad electrode part according to claim 6 .
17. A touch sensor comprising the pad electrode part according to claim 7 .
18. A touch sensor comprising the pad electrode part according to claim 8 .
19. A touch sensor comprising the pad electrode part according to claim 9 .