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Compensation method of pixel circuit in organic light-emitting diode display panel and related devices

專利號
US10867549B2
公開日期
2020-12-15
申請人
BOE Technology Group Co., Ltd.(CN Beijing)
發(fā)明人
Minghua Xuan
IPC分類
G09G3/3208
技術(shù)領(lǐng)域
voltage,pixel,transistor,emitting,display,signal,in,circuit,frame,driver
地域: Beijing

摘要

The disclosure discloses a compensation method and device of an organic light-emitting diode display panel, and an organic light-emitting diode display device. A high-voltage signal received at a first electrode of a driver transistor in the pixel circuit is detected when a light-emitting element in the pixel circuit is emitting light in the current frame. Then the voltage difference between the high-voltage signals received by the driver transistor in the current frame and a preceding frame, i.e., compensation voltage, is determined according to the detected high-voltage signal received by the pixel circuit in the current frame, and the pre-stored high-voltage signal received by the pixel circuit in the preceding frame. When the compensation voltage lies out of a preset range, voltage compensation is performed on a reference voltage signal applied to the pixel circuit according to the compensation voltage.

說明書

The third switch transistor M3 includes a first electrode configured to receive an initialization signal Vinit, a control electrode configured to receive a reset signal Re, and a second electrode connected with the second terminal of the storage capacitor Cst.

The fourth switch transistor M4 includes a control electrode configured to receive the scan signal Scan, a first electrode connected with a control electrode of the driver transistor M0, and a second electrode connected with the second electrode of the driver transistor M0.

The fifth switch transistor M5 includes a first electrode configured to receive the high-voltage signal VDD, a control electrode configured to receive the reset signal Re, and a second electrode connected with the first terminal of storage capacitor Cst.

The sixth switch transistor M6 includes a control electrode configured to receive the light-emission control signal EM, a first electrode connected with the second electrode of the driver transistor M0, and a second electrode connected with the first terminal of the light-emitting element L.

Optionally in the pixel circuit above, the first terminal of the light-emitting element may be an anode, and the second terminal thereof may be a cathode.

Optionally the control electrodes may be gates, the first electrodes may be sources or drains, and the second electrodes may be drains or sources, dependent upon different types of the respective switch transistors above, and different signals input thereto, although the embodiment of the disclosure will not be limited thereto.

權(quán)利要求

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