Pixel driving circuit, driving method, organic light-emitting display panel and display device

Abstract

The invention discloses a pixel driving circuit, a driving method, an organic light-emitting display panel and a display device. The pixel driving circuit comprises a data writing module, a memory module, at least one first light emitting device, a first driving module which corresponds to the various first light emitting device one by one, at least one second light emitting device and a second driving module which corresponds to the various second light emitting device one by one, wherein by virtue of the modules which are mutually matched, voltage of node signals can be switched between a positive value and a negative value by virtue of a simple structure, so that performances of the first driving module and the second driving module are recovered, and subsequently, the influence on the stability and the service life of the display panel due to performance offset of the first driving module and the second driving module is relieved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a driving method, an organic light emitting display panel and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) is one of the hot spots in the field of flat panel display research today. Compared with Liquid Crystal Display (LCD), OLED display has low energy consumption, low production cost, self-illumination, and wide viewing angle. and quick response. At present, OLED displays have begun to replace traditional LCD displays in display fields such as mobile phones, tablet computers, and digital cameras. [0003] Unlike LCDs that use a stable voltage to control brightness, OLEDs are driven by current and require a stable current to control their light emission. Generally, a pixel driving circuit is provided in an OLED display to drive the OLED to emit light. However, the structure of the current pixel driving c...

AI Technical Summary

Problems solved by technology

However, the structure of the current pixel driving circuit is complicated, and because there are defect states inside the driving transistor and the driving transistor is in the working state most of the time, when the gate of the driving transistor is at a large gate voltage for a long time, its threshold voltage drift will be Gradually serious, thereby accelerating the aging process of the driving transistor, which in turn affects the stability and life of the display panel

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