Touch panel and sensing method thereof
A touch panel and a sensing method thereof are provided. The sensing method includes: sensing a touch operation on a touch panel, and getting a touch trajectory of the touch operation. When the touch operation is occurred in a first sensing area, positions of the touch operation are co-located by first sensing electrodes and second sensing electrodes of the first sensing area. When the touch operation is occurred in a second sensing area, positions of the touch operation are co-located by third sensing electrodes and fourth sensing electrodes of the second sensing area. When the touch operation is occurred between the first sensing area and the second sensing area, positions of the touch operation are co-located by the first sensing electrodes and the third sensing electrodes.
1. A touch panel, comprising:
a substrate, having a first sensing area, a second sensing area and a middle axis, wherein the first sensing area and the second sensing area are spaced by a gap, and the middle axis is configured between the first sensing area and the second sensing area;
a plurality of first sensing electrodes and a plurality of second sensing electrodes, extendedly disposed in the first sensing area, wherein the first sensing electrodes and the second sensing electrodes are intersected to each other, and the first sensing electrodes are disposed along an extending direction of the middle axis;
a plurality of third sensing electrodes and a plurality of fourth sensing electrodes, extendedly disposed in the second sensing area, wherein the third sensing electrodes and the fourth sensing electrodes are intersected to each other, and the third sensing electrodes are disposed along the extending direction of the middle axis;
a first control unit, electrically connected to the first sensing electrodes and the second sensing electrodes, electrically isolated from the fourth sensing electrodes, and selectively electrically connected to a fixed part of the third sensing electrodes located adjacent to the first sensing area; and
a second control unit, electrically connected to the third sensing electrodes and the fourth sensing electrodes, electrically isolated from the second sensing electrodes, and selectively electrically connected to a fixed part of the first sensing electrodes located adjacent to the second sensing area,
wherein when the first control unit is selectively electrically connected to the fixed part of the third sensing electrodes located adjacent to the first sensing area, the first control unit calculates a change of capacitance values between the fixed part of the third sensing electrodes and the second sensing electrodes, and
when the second control unit is selectively electrically connected to the fixed part of the first sensing electrodes located adjacent to the second sensing area, the second control unit calculates a change of capacitance values between the fixed part of the first sensing electrodes and the fourth sensing electrodes.
2. The touch panel as claimed in claim 1 , wherein the touch panel is folded along the extending direction of the middle axis to form a folding axis, and the folding axis is located between the first sensing area and the second sensing area.
3. The touch panel as claimed in claim 1 , further comprising at least one first switch and at least one second switch, wherein the first control unit is selectively electrically connected to a fixed part of the third sensing electrodes through the first switch, and the second control unit is selectively electrically connected to a fixed part of the first sensing electrodes through the second switch.
4. The touch panel as claimed in claim 1 , further comprising at least one border electrode and at least one third switch, wherein the border electrode is disposed parallel to the extending direction of the middle axis, and is located between the first sensing area and the second sensing area, and the border electrode is selectively connected to the first control unit or the second control unit through the third switch.
5. The touch panel as claimed in claim 4 , wherein the border electrode and the middle axis are interleaved.