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Pixel circuit, compensation method for pixel circuit and display device

專利號
US10867554B2
公開日期
2020-12-15
申請人
Hefei Xinsheng Optoelectronics Technology Co., Ltd.; BOE Technology Group Co., Ltd.(CN Hefei CN Beijing)
發(fā)明人
Min He; Song Meng; Fei Yang; Chun Cao; Xiaolong Wei
IPC分類
G09G3/3233; G09G3/3266; G09G3/3275
技術(shù)領(lǐng)域
voltage,transistor,signal,reset,scan,emitting,terminal,sensing,tft3,switching
地域: Anhui

摘要

The present disclosure relates to a pixel circuit, a compensation method and a display device. The pixel circuit includes a first switching circuit for supplying a data voltage to a first node in response to a first scan signal being valid, a second switching circuit for conductively connecting a sensing signal line with a second node in response to a second scan signal being valid, a reset circuit for supplying a reset voltage to the sensing signal line in response to a reset control signal being valid, a light-emitting element, and a driving transistor for enabling, when the light-emitting element emits light, the sensing signal line to be charged in response to the second scan signal being valid and the reset control signal being invalid, the voltage of the sensing signal line is sensed after it was charged so as to compensate the data voltage.

說明書

FIG. 1 shows a schematic circuit diagram of a pixel circuit according to an embodiment of the present disclosure. As shown in FIG. 1, the pixel circuit includes a first switching circuit 110, a second switching circuit 120, a reset circuit 130, a light-emitting element 140, a tank circuit 150, and a driving transistor 160.

The first switching circuit 110 is connected to a first scan signal terminal GATE1, a data signal terminal DATA and a first node g, and is configured to supply a data signal on the data signal terminal DATA to the first node in response to a first scan signal on the first scan signal terminal GATE1 being valid.

The second switching circuit 120 is connected to a second scan signal terminal GATE2, a second node s and a sensing signal line SL, and is configured to conductively connect the sensing signal line SL with the second node in response to a second scan signal on the second scan signal terminal GATE2 being valid.

The reset circuit 130 is connected to a reset control terminal CPRESL, a reset signal terminal VPRESL, and the sensing signal line SL, and is configured to supply a reset voltage on the reset signal terminal to the sensing signal line SL in response to a reset control signal on the reset control terminal being valid.

A first terminal of the light-emitting element 140 is connected to the second node, and a second terminal of the light-emitting element 140 is connected to a first voltage terminal VSS. In some embodiments, the second terminal of the light-emitting element 140 may be grounded.

權(quán)利要求

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