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

Claim 1:
2. A pixel circuit comprising:
a driving element comprising a first electrode electrically connected to a first node to which a pixel driving voltage is configured to be 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 configured to receive a low-potential power supply voltage;
a first switch element comprising a first electrode to which an initialization voltage is configured to be applied, a gate electrode to which an initialization pulse is configured to be applied, and a second electrode electrically connected to the second node, the first switch element is 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 a sensing pulse is configured to be applied, and a second electrode to which a reference voltage configured to be applied, the second switch element is 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 a data voltage is configured to be applied, a gate electrode to which a scan pulse is configured to be applied, and a second electrode electrically connected to the second node, the third switch element is 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 a first emission control pulse is configured to be applied, and a second electrode electrically connected to the fourth node, the fourth switch element is configured to connect the third node to the fourth node in response to the first emission control pulse;
a first capacitor electrically connected between the second node and the third node; and
a second capacitor electrically connected between the third node and a node to which a constant voltage is configured to be applied, wherein the constant voltage is one of the pixel driving voltage, the initialization voltage, or the reference voltage.