Organic glow display panel, driving method and organic glow display device thereof

Abstract

The invention discloses an organic glow display panel, a driving method and an organic glow display device thereof. The organic glow display panel comprises a plurality of pixel driving circuits. The pixel driving circuit comprises 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, an electric potential collecting terminal, a driving module, an organic glow device, a brightness control module, a data writing module and an electric potential collecting module, wherein the driving module is utilized to drive the organic glow device to glow under the control of the control terminal and based on the voltage supplied by the first voltage terminal; the brightness control module is utilized to control the brightness of the organic glow device by controlling the first end of the driving module and the electric potential of the control terminal; the data writing module is utilized 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 organic glow display panel and the organic glow display device have the advantage of being capable of avoiding the drift of threshold voltage.

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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