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

專利號(hào)
US10867549B2
公開(kāi)日期
2020-12-15
申請(qǐng)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(shuō)明書(shū)

Accordingly optionally in the compensation method according to the embodiment of the disclosure, the preset range is an allowable error range which is derived empirically. For example, the preset range can be ?0.100V to 0.100V, or ?0.01V to 0.01V, or ?0.001V to 0.001V. Of course, the allowable error range above is different as required for the organic light-emitting display panel with a different function, so the preset range shall be designed for a real application environment, although the embodiment of the disclosure will not be limited thereto.

Optionally in the compensation method according to the embodiment of the disclosure, the light-emitting element is generally an organic light-emitting diode, which emits light under the action of current when the driver transistor is saturated.

Optionally in the compensation method according to the embodiment of the disclosure, voltage compensation is performed on the reference voltage signal applied to the corresponding pixel circuit specifically as follows.

The reference voltage signal to which the compensation voltage is added is applied to the pixel circuit, that is, the reference voltage signal received by the pixel circuit corresponding to the compensation voltage lying out of the preset range is a signal obtained after the corresponding compensation voltage is added to the voltage of the original reference voltage signal. Accordingly when the compensation voltage is positive voltage, the voltage of the compensated reference voltage signal is raised, and when the compensation voltage is negative voltage, the voltage of the compensated reference voltage signal is lowered.

權(quán)利要求

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