Patent ID: 11893934
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. A pixel driving circuit, comprising:
a driving sub-circuit configured to supply a driving signal to an element to be driven;
a detection sub-circuit electrically connected to a detection control signal terminal and a detection node, and configured to detect a voltage value of the detection node in response to a detection control signal received at the detection control signal terminal, wherein the detection node is equivalent to a point on a connection line between the driving sub-circuit and the element to be driven; and
a compensation sub-circuit electrically connected to a compensation control signal terminal, a compensation data signal terminal, the detection node and a compensation output terminal; the compensation sub-circuit is configured to transmit the driving signal supplied by the driving sub-circuit from the detection node to the compensation output terminal according to a first compensation data signal received at the compensation data signal terminal and in response to a compensation control signal received at the compensation control signal terminal; wherein
the detection sub-circuit includes a first transistor, a control electrode of the first transistor being electrically connected to the detection control signal terminal, a first electrode of the first transistor being electrically connected to the detection node, and a second electrode of the first transistor being configured to output the voltage value of the detection node; and
the compensation sub-circuit includes a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor and a seventh transistor; each of the third transistor and the fifth transistor is one of P-type transistor and N-type transistor, and each of the fourth transistor and the sixth transistor is another one of the P-type transistor and the N-type transistor, wherein
a control electrode of the second transistor is electrically connected to the compensation control signal terminal, a first electrode of the second transistor is electrically connected to the compensation data signal terminal, and a second electrode of the second transistor is electrically connected to a control electrode of the third transistor and a control electrode of the fourth transistor;
the control electrode of the third transistor is further electrically connected to a second electrode of the fifth transistor and a second electrode of the sixth transistor, a first electrode of the third transistor is electrically connected to a first voltage terminal, and a second electrode of the third transistor is electrically connected to a second electrode of the fourth transistor, a control electrode of the fifth transistor, a control electrode of the sixth transistor and a control electrode of the seventh transistor;
the control electrode of the fourth transistor is further electrically connected to the second electrode of the fifth transistor and the second electrode of the sixth transistor, a first electrode of the fourth transistor is electrically connected to a second voltage terminal, and the second electrode of the fourth transistor is electrically connected to the control electrode of the fifth transistor, the control electrode of the sixth transistor and the control electrode of the seventh transistor;
a first electrode of the fifth transistor is electrically connected to the first voltage terminal, and the second electrode of the fifth transistor is electrically connected to the second electrode of the sixth transistor;
a first electrode of the sixth transistor is electrically connected to the second voltage terminal; and
a first electrode of the seventh transistor is electrically connected to the detection node, and a second electrode of the seventh transistor is electrically connected to the compensation output terminal.