Display device
Provided is a display device comprising a display panel including a plurality of pixels, one of the pixels includes a light emitting device, which is connected with a reference node to emit light, and a driving transistor connected between a power line, which is to receive a power supply voltage, and the reference node. a scan transistor, which is connected between a data line to receive a data signal and the driving transistor and receives a scan signal, a light receiving device, which is connected between a bias line to receive a bias voltage and the reference node, and receives the light, and a masking transistor which is connected between the reference node and the light receiving device and receives a masking signal.
1. A display device comprising:
a display panel including a plurality of pixels,
wherein each of the pixels includes:
a light emitting device connected with a reference node to emit light;
a driving transistor connected between a power line for receiving a power supply voltage and the reference node;
a scan transistor connected between a data line for receiving a data signal and the driving transistor, and configured to receive a scan signal;
a light receiving device connected between a bias line for receiving a bias voltage and the reference node, and configured to receive the light; and
a masking transistor connected between the reference node and the light receiving device and configured to receive a masking signal.
2. The display device of claim 1 , wherein the light receiving device includes:
a correcting transistor having a first electrode connected with the bias line, a second electrode connected with the masking transistor, and a control electrode connected with the bias line.
3. The display device of claim 2 , wherein the masking transistor includes:
a first electrode connected with the second electrode of the correcting transistor, a second electrode connected with the reference node, and a control electrode to receive the masking signal.
4. The display device of claim 2 , wherein the light emitting device is connected between a common electrode for receiving a common voltage and the reference node, and
wherein the common voltage serves as the bias voltage and is supplied to the correcting transistor.
5. The display device of claim 1 , wherein the driving transistor includes:
a first electrode connected with the reference node;
a second electrode connected with the power line; and
a control electrode connected with the scan transistor, and
wherein the scan transistor includes:
a first electrode connected with the control electrode of the driving transistor, a second electrode connected with the data line, and a control electrode to receive the scan signal.
6. The display device of claim 1 , wherein the scan signal includes:
a scan duration for turning on the scan transistor,
wherein the masking signal includes:
a masking duration for turning on the masking transistor, and
wherein the scan duration precedes the masking duration in a frame.
7. The display device of claim 6 , wherein the scan duration and the masking duration do not overlap each other in the frame.
8. The display device of claim 1 , further comprising:
a capacitor connected between a control electrode of the driving transistor and the reference node; and
an initialization transistor connected between the reference node and an initialization line, and configured to receive an initialization voltage,
wherein the initialization transistor includes:
a first electrode connected with the reference node;
a second electrode connected with the initialization line; and
a control electrode to receive an initialization signal.
9. The display device of claim 8 , wherein the scan signal includes:
a scan duration for turning on the scan transistor,
wherein the masking signal includes:
a masking duration for turning on the masking transistor,
wherein the initialization signal includes:
an initialization duration for turning on the initialization transistor, and
wherein the initialization duration precedes the scan duration, and the scan duration precedes the masking duration in a frame.