Patent ID: 11887536
Assignee: LG DISPLAY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. A display device comprising:
a display panel on which a plurality of data lines, a plurality of gate lines overlapping the data lines, a plurality of power lines to which different constant voltages are applied, and a plurality of subpixels are disposed;
a data driver configured to supply a data voltage of pixel data to the data lines; and
a gate driver configured to supply an initialization pulse, a sensing pulse, a scan pulse, and an emission control pulse to the gate lines,
wherein each of the subpixels comprises:
a driving element comprising a first electrode electrically connected to a first node to which a pixel driving voltage is applied, a gate electrode electrically connected to a second node, and a second electrode electrically connected to a third node;
a light-emitting element comprising an anode electrode electrically connected to a fourth node and a cathode electrode to which a low-potential power supply voltage is applied;
a first switch element comprising a first electrode to which an initialization voltage is applied, a gate electrode to which the initialization pulse is applied, and a second electrode electrically connected to the second node, and configured to supply the initialization voltage to the second node in response to the initialization pulse;
a second switch element comprising a first electrode electrically connected to the third node or the fourth node, a gate electrode to which the sensing pulse is applied, and a second electrode to which a reference voltage is applied, and configured to supply the reference voltage to the third node or the fourth node in response to the sensing pulse;
a third switch element comprising a first electrode to which the data voltage is applied, a gate electrode to which the scan pulse is applied, and a second electrode electrically connected to the second node, and configured to supply the data voltage to the second node in response to the scan pulse; and
a fourth switch element comprising a first electrode electrically connected to the third node, a gate electrode to which the emission control pulse is applied, and a second electrode electrically connected to the fourth node, and configured to connect the third node to the fourth node in response to the emission control pulse,
wherein the fourth switch is disabled during a time period in which at least one of the first or second switch is enabled and is enabled during a time period when both of the first and second switches are disabled.