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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

In some embodiments, sensing and compensation of the voltage of light-emitting elements may be performed for each of sub-pixels in the display panel.

FIG. 4 shows a schematic circuit diagram of a pixel circuit according to an embodiment of the present disclosure. As shown in FIG. 4, a first switching circuit includes a first switching transistor TFT1, a second switching circuit includes a second switching transistor TFT2, a reset circuit includes a reset switch Spre_L, a driving transistor TFT3, a tank circuit includes an energy storage capacitor Cst, and a light-emitting element includes a light-emitting diode OLED.

權(quán)利要求

1
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