Patent ID: 11908394
Assignee: WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A display panel with a narrow frame width, comprising:
a first gate driving circuit,
a second gate driving circuit,
a pixel driving circuit, and
a light-emitting component;
wherein the pixel driving circuit comprises a driving transistor, a data writing module, a threshold compensation module, and a light-emitting control module;
wherein the data writing module is configured for transmitting a data voltage signal to a control terminal of the driving transistor such that the driving transistor generates a driving current according to the data voltage signal provided by a data signal terminal;
wherein the threshold compensation module is configured for detecting and self-compensating a threshold voltage deviation of the driving transistor;
wherein the light-emitting control module is connected in series between a first power signal terminal and the light-emitting component;
wherein a transistor in the threshold compensation module is a P-type transistor and a transistor in the light-emitting control module is an N-type transistor, or the transistor in the threshold compensation module is an N-type transistor and the transistor in the light-emitting control module is a P-type transistor; and a control terminal of the transistor in the threshold compensation module and a control terminal of the transistor in the light-emitting control module are electrically connected to a same gate driving circuit;
wherein the light-emitting control module comprises a first light-emitting control unit and a second light-emitting control unit;
wherein the first light-emitting control unit comprises a transistor, a first terminal of the transistor in the first light-emitting control unit is electrically connected to the first power signal terminal and a second terminal of the transistor in the first light-emitting control unit is electrically connected to a first terminal of the driving transistor, and the second light-emitting control unit comprises a transistor, a first terminal of the transistor in the second light-emitting control unit is electrically connected to a second terminal of the driving transistor and a second terminal of the transistor in the second light-emitting control unit is electrically connected to the light-emitting component;
wherein the first gate driving circuit comprises a plurality of cascaded first gate driving units, and the second gate driving circuit comprises a plurality of cascaded second gate driving units;
wherein a control terminal of the data writing module is electrically connected to an output terminal of the second gate driving unit at a current stage;
a control terminal of the transistor in the first light-emitting control unit and the control terminal of the transistor in the threshold compensation module are electrically connected to an output terminal of the first gate driving unit at the current stage;
a control terminal of the transistor in the second light-emitting control unit is electrically connected to an output terminal of the first gate driving unit at a subsequent stage; and
wherein the display panel further comprises a first initialization module, wherein the first initialization module comprises a transistor, a first terminal of the transistor in the first initialization module is electrically connected to an initialization signal terminal and a second terminal of the transistor in the first initialization module is electrically connected to the second terminal of the driving transistor, and the transistor in the first initialization module is configured for providing an initialization voltage signal for the control terminal of the driving transistor through the transistor in the threshold compensation module and the transistor in the first initialization module is further configured for providing the initialization voltage signal for an anode of the light-emitting component through the transistor in the second light-emitting control unit.