Patent ID: 11875747
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. The pixel driving circuit according to claim 1, further comprising: an accessory current leakage suppression sub-circuit; wherein
the current leakage suppression sub-circuit includes a first transistor, the first transistor is an oxide-thin film transistor or an amorphous silicon thin film transistor; the energy storage sub-circuit includes a fourth capacitor; the driving sub-circuit includes a twelfth transistor; the data writing sub-circuit includes a thirteenth transistor; the light-emitting control sub-circuit includes a fourteenth transistor; the reset sub-circuit includes a third transistor and a fourth transistor connected in series, or the reset sub-circuit includes a seventh transistor; the compensation sub-circuit includes a fifth transistor and a sixth transistor connected in series, or the compensation sub-circuit includes an eighth transistor; the reference voltage sub-circuit includes a ninth transistor and a tenth transistor, or the reference voltage sub-circuit includes an eleventh transistor; the accessory current leakage suppression sub-circuit includes a first capacitor;
a control electrode of the first transistor is coupled to a light-emitting timing signal terminal, a first electrode of the first transistor is coupled to a fourth node, and a second electrode of the first transistor is coupled to the second node;
a first terminal of the fourth capacitor is coupled to the first node, and a second terminal of the fourth capacitor is coupled to the second node;
a control electrode of the twelfth transistor is coupled to the second node, a first electrode of the twelfth transistor is coupled to the first voltage signal terminal, and a second electrode of the twelfth transistor is coupled to the third node;
a control electrode of the thirteenth transistor is coupled to the second scan timing signal terminal, a first electrode of the thirteenth transistor is coupled to a data signal terminal, and a second electrode of the thirteenth transistor is coupled to the first node;
a control electrode of the fourteenth transistor is coupled to the light-emitting timing signal terminal, a first electrode of the fourteenth transistor is coupled to the third node, and a second electrode of the fourteenth transistor is configured to be coupled to a light-emitting device;
in a case where the reset sub-circuit includes the third transistor and the fourth transistor connected in series, a control electrode of the third transistor is coupled to the first scan timing signal terminal, a first electrode of the third transistor is coupled to the initial signal terminal, a second electrode of the third transistor is coupled to a first electrode of the fourth transistor, a control electrode of the fourth transistor is coupled to the first scan timing signal terminal, and a second electrode of the fourth transistor is coupled to the fourth node;
in a case where the reset sub-circuit includes the seventh transistor; a control electrode of the seventh transistor is coupled to the first scan timing signal terminal, a first electrode of the seventh transistor is coupled to the initial signal terminal, and a second electrode of the seventh transistor is coupled to the fourth node;
in a case where the compensation sub-circuit includes the fifth transistor and the sixth transistor connected in series, a control electrode of the fifth transistor is coupled to the second scan timing signal terminal, a first electrode of the fifth transistor is coupled to the third node, a second electrode of the fifth transistor is coupled to a first electrode of the sixth transistor, a control electrode of the sixth transistor is coupled to the second scan timing signal terminal, and a second electrode of the sixth transistor is coupled to the fourth node;
in a case where the compensation sub-circuit includes the eighth transistor, a control electrode of the eighth transistor is coupled to the second scan timing signal terminal, a first electrode of the eighth transistor is coupled to the third node, and a second electrode of the eighth transistor is coupled to the fourth node;
in a case where the reference voltage sub-circuit includes the ninth transistor and the tenth transistor, a control electrode of the ninth transistor is coupled to the first scan timing signal terminal, a first electrode of the ninth transistor is coupled to a reference voltage signal terminal, and a second electrode of the ninth transistor is coupled to the first node; a control electrode of the tenth transistor is coupled to the light-emitting timing signal terminal, a first electrode of the tenth transistor is coupled to the reference voltage signal terminal, and a second electrode of the tenth transistor is coupled to the first node;
in a case where the reference voltage sub-circuit includes the eleventh transistor, a control electrode of the eleventh transistor is coupled to the first scan timing signal terminal, a first electrode of the eleventh transistor is coupled to the reference voltage signal terminal, and a second electrode of the eleventh transistor is coupled to the first node; an on/off type of the eleventh transistor is the same as an on/off type of the first transistor, and the on/off type of the first transistor is opposite to on/off types of transistors except the first transistor and the eleventh transistor in the pixel driving circuit;
a first terminal of the first capacitor is coupled to the first node, and a second terminal of the first capacitor is coupled to the fourth node.