Patent ID: 11972729
Assignee: XIAMEN TIANMA DISPLAY TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 11:
12. A display device, comprising a display panel, wherein the display panel comprises a pixel driver circuit, wherein the pixel driver circuit comprises a drive module, a first initialization module, a storage module, a threshold compensation module, a data write module and a light-emitting module, wherein
a first terminal of the drive module is configured to receive a signal provided by a first power supply, a second terminal of the drive module is configured to provide a light emission drive signal for the light-emitting module, the storage module is connected between a control terminal of the drive module and the first terminal of the drive module, and the threshold compensation module is connected between the control terminal of the drive module and the second terminal of the drive module;
the data write module is connected to the first terminal of the drive module for transmitting a data voltage to the drive module, and the first initialization module is connected between a first reference voltage output terminal and the control terminal of the drive module and the first initialization module is configured for providing a first initialization voltage for the drive module; and
at least one of a transistor of the drive module, a transistor of the first initialization module and a transistor of the threshold compensation module adopts a first double-gate structure, the transistor adopting the first double-gate structure comprises a control terminal and a first bottom gate electrode, and the first bottom gate electrode is configured to access to a first modulation voltage;
wherein the pixel driver circuit further comprises: a second initialization module, a first light emission control module and a second light emission control module;
wherein the second initialization module is connected between a second reference voltage output terminal and a first terminal of the light-emitting module and the second initialization module is configured for providing a second initialization voltage for the light-emitting module; and
wherein the first light emission control module is connected between the first power supply and the first terminal of the drive module; and
the second light emission control module is connected between the second terminal of the drive module and the first terminal of the light-emitting module, and a second terminal of the light-emitting module is connected to a second power supply;
wherein the storage module comprises a first capacitor, the first light emission control module comprises a first transistor, the data write module comprises a second transistor, the drive module comprises a third transistor, the threshold compensation module comprises a fourth transistor, the first initialization module comprises a fifth transistor, the second light emission control module comprises a sixth transistor, and the second initialization module comprises a seventh transistor, wherein
a control terminal of the third transistor is separately connected to a second terminal of the fifth transistor and a first terminal of the fourth transistor, a first terminal of the third transistor is connected to a second terminal of the first transistor, a first terminal of the first transistor is connected to the first power supply, a second terminal of the third transistor is separately connected to a second terminal of the fourth transistor and a first terminal of the sixth transistor, and a second terminal of the sixth transistor is connected to the first terminal of the light-emitting module;
a first terminal of the fifth transistor is connected to the first reference voltage output terminal, a first terminal of the second transistor is connected to a data signal line, a second terminal of the second transistor is connected to the first terminal of the third transistor, a first terminal of the seventh transistor is connected to the second reference voltage output terminal, and a second terminal of the seventh transistor is connected to the first terminal of the light-emitting module;
at least one of the third transistor, the fourth transistor and the fifth transistor adopts the first double-gate structure, a control terminal of the first transistor and a control terminal of the sixth transistor are connected to a light emission control signal line, a control terminal of the fifth transistor is connected to a first scan signal line, a control terminal of the fourth transistor, a control terminal of the second transistor and a control terminal of the seventh transistor are connected to a second scan signal line; and
wherein the second transistor adopts a second double-gate structure, wherein the second double-gate structure comprises a control terminal and a second bottom gate electrode, and the second bottom gate electrode is configured to access to a second modulation voltage, wherein a threshold voltage of the second transistor is in a negative bias state.