Organic light-emitting display panel, driving method thereof, and organic light-emitting display device

Abstract

The present application discloses an organic light emitting display panel, a driving method thereof, and an organic light emitting display device. The organic light-emitting display panel includes a plurality of pixel driving circuits, and the pixel driving circuit includes a first voltage terminal, a second voltage terminal, a scanning signal terminal, a data signal terminal, a first control signal terminal, a second control signal terminal, a potential collection terminal, a driving module, an organic light-emitting device, a brightness control module, a data writing module, and a potential acquisition module; the drive module is used to drive the organic light-emitting device to emit light based on the voltage provided by the first voltage terminal under the control of the control terminal; the brightness control module is used to control the The potential of the first terminal and the control terminal of the driving module is used to control the brightness of the organic light-emitting device; the data writing module is used to write the signal of the data signal terminal into the control terminal of the driving module under the control of the scanning signal terminal. The above organic light emitting display panel and organic light emitting display device can avoid threshold voltage drift.

Description

technical field [0001] The present application relates to the field of display technology, in particular to the field of organic light-emitting display technology, and in particular to an organic light-emitting display panel, a driving method thereof, and an organic light-emitting display device. Background technique [0002] Organic light-emitting displays use the self-luminous properties of organic semiconductor materials for display. Compared with liquid crystal displays, organic light-emitting displays do not require backlights, which can effectively reduce the thickness of the display screen. Generally, a pixel array composed of sub-pixels is arranged in a display area of ​​an organic light emitting display. Each sub-pixel contains an organic light-emitting diode, which is driven to emit light by a pixel driver circuit. [0003] A type of existing pixel driving circuit may include a driving transistor, which provides light emitting current to an organic light emitting ...

AI Technical Summary

Problems solved by technology

Generally, the luminous current of an organic light emitting diode is related to the threshold voltage Vth of the driving transistor, but the threshold voltage Vth of the driving transistor will drift due to processes, aging after long-term use, etc. (that is, "threshold drift"), so the organic light emitting diode The accuracy of luminance is poor, and the threshold voltage drift of different organic light-emitting diodes may vary, and the display luminance of each sub-pixel has obvious deviations, which makes the display uniformity of the screen poor

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