Display device
The present disclosure provides a display device according to embodiments of the present disclosure may include including a driving transistor for driving the light emitting device, a scan transistor electrically connected to a gate node of the driving transistor, and a first control transistor electrically connected between the scan transistor and a data line, the first control transistor being turned off during a floating period of a touch driving period by a driving control signal applied to a gate node thereof and electrically disconnecting between the scan transistor and the data line, thereby improving a touch sensitivity eliminating an influence of the data line on a touch signal supply line.
1 . A display device, comprising:
a pixel area where a subpixel is disposed; and
a touch area where a touch unit is disposed,
wherein the subpixel comprises,
a light emitting device,
a driving transistor for driving the light emitting device,
a scan transistor electrically connected to a gate node of the driving transistor, and
a first control transistor electrically connected between the scan transistor and a data line,
wherein a period during which the subpixel is driven comprises:
an image display driving period for controlling the light emitting device; and
a touch driving period for controlling the touch unit, and
wherein the touch driving period comprises:
an initialization voltage supply period during which a line initialization voltage is supplied to the data line; and
a floating period during which the first transistor is maintained in a turn-off state.
2 . The display device of claim 1 , wherein the first control transistor is connected to be supplied with a driving control signal through a gate node of the first control transistor.
3 . The display device of claim 1 , wherein the subpixel further includes a second control transistor electrically connected between the scan transistor and the data line,
wherein the first control transistor is connected to be supplied with a first driving control signal through a gate node of the first control transistor,
wherein the second control transistor is connected to be supplied with a second driving control signal different from the first driving control signal through a gate node of the second control transistor.
4 . The display device of claim 3 , wherein a voltage level of the second driving control signal is different from a voltage level of the first driving control signal.
5 . A display device, comprising:
a pixel area where a subpixel is disposed; and
a touch area where a touch unit is disposed,
wherein the subpixel comprises,
a light emitting device,
a driving transistor for driving the light emitting device,
a scan transistor electrically connected to a gate node of the driving transistor, and
a first control transistor electrically connected between the scan transistor and a data line, wherein the subpixel further comprises:
a sensing transistor electrically connected to the driving transistor; and
a second control transistor electrically connected between the sensing transistor and a reference voltage line.
6 . The display device of claim 5 , wherein a period during which the subpixel is driven comprises:
an image display driving period for controlling the light emitting device; and
a touch driving period for controlling the touch unit.
7 . The display device of claim 6 , wherein the touch driving period comprises:
an initialization voltage supply period during which a line initialization voltage is supplied to the data line; and
a floating period during which the first transistor is maintained in a turn-off state.
8 . The display device of claim 7 , wherein the line initialization voltage is further supplied to the reference voltage line during the initialization voltage supply period.
9 . The display device of claim 1 , wherein the subpixel further includes a second control transistor electrically connected between a gate node of the scan transistor and an image gate line,
wherein a gate node of the first control transistor and a gate node of the second control transistor are electrically connected to a driving control gate line.
10 . The display device of claim 1 , wherein the subpixel further includes a second control transistor electrically connected between a gate node of the scan transistor and an image gate line,
wherein the first control transistor is connected to be supplied with a driving control signal through a gate node of the first control transistor,
wherein the second control transistor is connected to be supplied with a local control signal through a gate node of the second control transistor.
11 . The display device of claim 10 , further comprising an inverter circuit configured to receive a touch scan signal and then supply the local control signal to the gate node of the second control transistor based on the touch scan signal.
12 . The display device of claim 10 , wherein, during a touch driving period in which a presence or absence of touch is determined through the touch unit, a period during which the local control signal is maintained as a first level signal is longer than a period during which the driving control signal is maintained as a second level signal different from the first level signal.
13 . A display device, comprising:
a pixel area where a subpixel is disposed; and
a touch area where a touch unit is disposed,
wherein the subpixel comprises,
a light emitting device,
a driving transistor for driving the light emitting device,
a scan transistor electrically connected to a gate node of the driving transistor, and
a first control transistor electrically connected between the scan transistor and a data line,
wherein the touch unit comprises:
a touch sensor electrically connected to a touch signal supply line; and
a touch transistor electrically connected between the touch sensor and a touch signal sensing line.
14 . The display device of claim 13 , wherein the touch sensor is a transparent electrode.
15 . The display device of claim 13 , wherein the touch transistor is connected to be supplied with a touch scan signal through a gate node of the touch transistor.
16 . The display device of claim 13 , wherein the touch signal supply line is connected to supply a touch driving signal to the touch sensor,
wherein the touch signal sensing line is connected to be supplied with a signal for determining a presence or absence of touch.
17 . The display device of claim 16 , wherein the touch transistor is configured to be on such that the touch signal sensing line is electrically connected with the touch sensor.