Electronic device
Provided is an electronic device. The electronic device includes a display layer, a sensor layer disposed on the display layer and including a plurality of sensing electrodes, a sensor driving part, a first virtual sensor part including a plurality of virtual electrodes, a first RC circuit electrically connected between the sensor driving part and the first virtual sensor part, and a flexible circuit board which is connected to the display layer and on which the sensor driving part and the first RC circuit are disposed. The sensor driving part may be configured to receive a touch signal from the plurality of sensing electrodes and receive a first noise signal from the plurality of virtual electrodes, the first RC circuit may be configured to control a magnitude of the first noise signal, and the sensor driving part may be configured to subtract the touch signal and the first noise signal.
1 . An electronic device comprising:
a display layer;
a sensor layer disposed on the display layer and comprising a plurality of sensing electrodes;
a sensor driving part configured to drive the sensor layer;
a first virtual sensor part comprising a plurality of virtual electrodes disposed on layers different from each other, wherein a capacitor is disposed between nearest pairs of the plurality of virtual electrodes;
a first RC circuit electrically connected between the sensor driving part and the first virtual sensor part; and
a flexible circuit board which is connected to the display layer and on which the sensor driving part and the first RC circuit are disposed,
wherein the sensor driving part is configured to receive a touch signal from the plurality of sensing electrodes and receive a first noise signal from the plurality of virtual electrodes,
the first RC circuit is configured to control a magnitude of the first noise signal, and
the sensor driving part is configured to subtract the touch signal and the first noise signal.
2 . The electronic device of claim 1 , wherein the plurality of virtual electrodes comprise a first virtual electrode and a second virtual electrode,
wherein the first virtual electrode and the second virtual electrode are disposed on the layers that are different from each other, and
the first virtual electrode and the second virtual electrode are disposed on the flexible circuit board.
3 . The electronic device of claim 1 , further comprising a second RC circuit electrically connected between the sensor driving part and the first virtual sensor part.
4 . The electronic device of claim 3 , wherein each of the first RC circuit and the second RC circuit comprises a passive element.
5 . The electronic device of claim 3 , wherein each of the first RC circuit and the second RC circuit comprises an active element, and
the electronic device further comprises a circuit controller configured to control the first RC circuit and the second RC circuit, wherein the circuit controller is disposed on the flexible circuit board.
6 . The electronic device of claim 1 , wherein the sensor driving part comprises a signal receiver comprising a first input terminal and a second input terminal,
wherein the touch signal is applied to the first input terminal of the signal receiver, and
the first noise signal is applied to the second input terminal of the signal receiver.
7 . The electronic device of claim 1 , wherein the sensor driving part comprises a first signal receiver and a second signal receiver, wherein the first signal receiver and the second signal receiver each comprise a first input terminal and a second input terminal, respectively,
wherein the touch signal is applied to the first input terminal of the first signal receiver, and
the first noise signal is applied to the first input terminal of the second signal receiver.
8 . The electronic device of claim 1 , wherein the plurality of sensing electrodes comprise a plurality of first sensing electrodes and a plurality of second sensing electrodes, which are insulated from and intersect the plurality of first sensing electrodes,
each of the plurality of first sensing electrodes extends in a first direction,
each of the plurality of second sensing electrodes extends in a second direction intersecting the first direction,
the plurality of first sensing electrodes and the plurality of second sensing electrodes are configured to define a plurality of channels, respectively,
the first noise signal comprises a plurality of noise values, which correspond to the plurality of channels, respectively, and
the sensor driving part is configured to digital-convert the plurality of noise values into a plurality of digital noise signals, respectively.
9 . The electronic device of claim 8 , wherein the sensor driving part is configured to subtract a mean value of the plurality of digital noise signals from a digital signal of the touch signal.
10 . The electronic device of claim 9 , wherein the sensor driving part is configured to subtract a mean value of digital noise signals arranged in the first direction among the plurality of digital noise signals from the digital signal of the touch signal.
11 . The electronic device of claim 9 , wherein the sensor driving part is configured to subtract a mean value of digital noise signals arranged in the second direction among the plurality of digital noise signals from the digital signal of the touch signal.
12 . The electronic device of claim 8 , wherein the touch signal is provided in plurality,
the plurality of touch signals correspond to the plurality of channels, respectively,
the sensor driving part is configured to subtract the plurality of digital noise signals from a plurality of digital signals of the plurality of touch signals, respectively.
13 . An electronic device comprising:
a display layer;
a sensor layer disposed on the display layer and comprising a plurality of sensing electrodes;
a sensor driving part configured to drive the sensor layer;
a first virtual sensor part comprising a plurality of virtual electrodes disposed on layers different from each other, wherein a capacitor is disposed between nearest pairs of the plurality of virtual electrodes;
a first RC circuit electrically connected between the sensor driving part and the first virtual sensor part; and
a flexible circuit board which is connected to the display layer and on which the sensor driving part and the first RC circuit are disposed,
wherein the sensor driving part is configured to receive a touch signal from the plurality of sensing electrodes and receive a first noise signal from the plurality of virtual electrodes,
wherein the first RC circuit is configured to control a magnitude of the first noise signal,
wherein the sensor driving part is configured to subtract the touch signal and the first noise signal,
wherein the sensor layer comprises an active area and a peripheral area disposed around the active area,
wherein the sensor layer is driven in a unit of a sensing frame,
wherein the sensing frame comprises a first section, a second section, and a third section, and
wherein the sensor driving part is configured to receive the touch signal in a self-touch method in each of the first section and the second section and receive the touch signal in a mutual touch method in the third section.
14 . The electronic device of claim 13 , wherein the first RC circuit is configured to operate in the unit of the sensing frame and comprises a passive element,
the first RC circuit is configured to control a magnitude of the first noise signal in a first-1 sampling section corresponding to the first section during the sensing frame,
the first RC circuit is configured to control a magnitude the first noise signal in a first-2 sampling section corresponding to the second section during the sensing frame, and
the first RC circuit is configured to control a magnitude the first noise signal in a first-3 sampling section corresponding to the third section during the sensing frame.
15 . The electronic device of claim 14 , wherein the first-1 sampling section is less than the first section,
the first-2 sampling section is less than the second section, and
the first-3 sampling section is less than the third section.
16 . The electronic device of claim 13 , wherein the active area comprises a first area, a second area, and a third area, which are arranged in a second direction,
the third section comprises a third-1 section, in which a signal corresponding to the first area is received, a third-2 section, in which a signal corresponding to the second area is received, and a third-3 section, in which a signal corresponding to the third area is received,
the first RC circuit is configured to operate in the unit of the sensing frame and comprises an active element,
the first RC circuit is configured to control a magnitude of the first noise signal in a second-1 sampling section corresponding to the third-1 section during the sensing frame,
the first RC circuit is configured to control a magnitude the first noise signal in a second-2 sampling section corresponding to the third-2 section during the sensing frame, and
the first RC circuit is configured to control a magnitude the first noise signal in a second-3 sampling section corresponding to the third-3 section during the sensing frame.
17 . The electronic device of claim 13 , further comprising a second virtual sensor part disposed on the flexible circuit board,
wherein the sensor driving part is configured to receive a second noise signal from the second virtual sensor part, and
the sensor driving part is configured to subtract the first noise signal and the second noise signal from the touch signal.
18 . An electronic device comprising:
a display layer;
a sensor layer disposed on the display layer and comprising a plurality of sensing electrodes;
a sensor driving part configured to drive the sensor layer;
a first virtual sensor part comprising a plurality of virtual electrodes disposed on layers different from each other, wherein a capacitor is disposed between nearest pairs of the plurality of virtual electrodes;
a first RC circuit electrically connected between the sensor driving part and the first virtual sensor part; and
a flexible circuit board which is connected to the display layer and on which the sensor driving part and the first RC circuit are disposed,
wherein the sensor driving part is configured to receive a touch signal from the plurality of sensing electrodes and receive a first noise signal from the plurality of virtual electrodes,
wherein the first RC circuit is configured to control a magnitude of the first noise signal,
wherein the sensor driving part is configured to subtract the touch signal and the first noise signal,
wherein the sensor layer comprises an active area and a peripheral area disposed around the active area, and
wherein the first virtual sensor part is disposed on the peripheral area.
19 . The electronic device of claim 18 , further comprising an RC line configured to control a magnitude of the first noise signal and disposed on the sensor layer,
wherein the RC line is connected between the sensor driving part and the first virtual sensor part.
20 . The electronic device of claim 19 , wherein the sensor layer comprises an active area and a peripheral area disposed around the active area, and
the RC line is disposed on the peripheral area.