Display device
An electronic device is provided. The electronic device includes a control circuit and a plurality of sensing units. The control circuit switches between a first touch sensing mode and a second touch sensing mode of the electronic device. A first amplitude of a first touch driving signal provided by the control circuit operating in the first touch sensing mode is smaller than a second amplitude of a second touch driving signal provided by the control circuit operating in the second touch sensing mode.
1 . An electronic device, comprising:
a control circuit, configured to switch between a first touch sensing mode of the electronic device and a second touch sensing mode of the electronic device; and
a plurality of sensing units, electrically connected to the control circuit,
wherein a first amplitude of a first touch driving signal provided by the control circuit operating in the first touch sensing mode is smaller than a second amplitude of a second touch driving signal provided by the control circuit operating in the second touch sensing mode,
wherein the control circuit in the first touch sensing mode groups the sensing units into a first sensing unit group and a plurality of second sensing unit groups,
wherein in the first touch sensing mode, when triggering behavior is sensed, the control circuit controls the electronic device to enter the second touch sensing mode and restores the first sensing unit group and the second sensing unit groups back to the sensing units,
wherein the first touch sensing mode is a mutual-capacitance sensing mode, and
wherein the second touch sensing mode is a self-capacitance sensing mode.
2 . The electronic device according to claim 1 , wherein the second sensing unit groups are respectively adjacent to the first sensing unit group.
3 . The electronic device according to claim 1 , wherein the second sensing unit groups collectively surround the first sensing unit group.
4 . The electronic device according to claim 1 , wherein the control circuit in the first touch sensing mode provides the first touch driving signal to the first sensing unit group.
5 . The electronic device according to claim 1 , wherein a frequency of the first touch driving signal is higher than a frequency of the second touch driving signal.
6 . The electronic device according to claim 1 , wherein the first touch driving signal comprises a plurality of sine waves.
7 . The electronic device according to claim 1 , wherein the first touch driving signal comprises a plurality of pulses.
8 . The electronic device according to claim 1 , wherein the second touch driving signal comprises a plurality of sine waves.
9 . The electronic device according to claim 1 , wherein the second touch driving signal comprises a plurality of pulses.
10 . The electronic device according to claim 1 , wherein the first touch driving signal and the second touch driving signal are analog signals, respectively.
11 . The electronic device according to claim 1 , wherein one of the first touch driving signal and the second touch driving signal is a digital signal, and the other one of the first touch driving signal and the second touch driving signal is an analog signal.
12 . The electronic device according to claim 1 , wherein the control circuit comprises:
a dynamic sensing logic circuit, configured to provide an index signal according to the first touch sensing mode and the second touch sensing mode.
13 . The electronic device according to claim 12 , wherein the control circuit further comprises:
a group control circuit, electrically connected to the dynamic sensing logic circuit and configured to group the sensing units into the first sensing unit group and the plurality of second sensing unit groups or restore the first sensing unit group and the second sensing unit groups back to the sensing units according to the index signal.
14 . The electronic device according to claim 12 , wherein the control circuit further comprises:
a touch control circuit, electrically connected to the dynamic sensing logic circuit,
wherein the dynamic sensing logic circuit provides a touch synchronization signal according to a vertical synchronization signal, and
wherein the touch control circuit determines to provide one of the first touch driving signal and the second touch driving signal according to the touch synchronization signal.
15 . The electronic device according to claim 1 , wherein the control circuit comprises:
a first timing signal generator;
a second timing signal generator;
a touch driving circuit, electrically connected to the first timing signal generator and the second timing signal generator; and
a determination circuit, electrically connected to the first timing signal generator and the second timing signal generator,
wherein in the first touch sensing mode, the determination circuit enables the first timing signal generator and disables the second timing signal generator, such that the first timing signal generator provides a first timing signal, and
the touch driving circuit provides the first touch driving signal in response to the first timing signal.
16 . The electronic device according to claim 15 , wherein in the second touch sensing mode:
the determination circuit enables the second timing signal generator and disables the first timing signal generator, such that the second timing signal generator provides a second timing signal, and
the touch driving circuit provides the second touch driving signal in response to the second timing signal.