Pixel circuit, organic electroluminescence display panel and display device

Abstract

The invention discloses a pixel circuit, an organic electroluminescence display panel and a display device. By adding a switch module to the pixel circuit, an abnormal driving current outputted by a driving module can be prevented from flowing to a light emitter when a first display frame starts, and a screen flickering problem of a display panel generated during starting the first frame can be ameliorated, as the abnormal driving current of the pixel circuit can be prevented by the switch module from flowing to the light emitter, so high level signals can be prevented from flowing to a low level signal end before low level signals are inputted to the low level signal end of the pixel circuit, the low level signal end of the pixel circuit has no positive potential before the low level signals are received by the low level signal end, and thereby a problem that abnormal display of the display panel caused by a self-protection function of a power source signal chip triggered by positive and negative potential reception pressures at the low level signal end of the pixel circuit can be ameliorated.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel circuit, an organic electroluminescent display panel and a display device. Background technique [0002] With the advancement of display technology, organic light-emitting display (OrganicLightEmittingDiode, OLED) is one of the hotspots in the field of flat panel display research today, and more and more active matrix organic light-emitting diode (ActiveMatrixOrganicLightEmittingDiode, AMOLED) display panels have entered the market Advanced thin film transistor liquid crystal display panel (ThinFilmTransistorLiquidCrystalDisplay, TFTLCD), AMOLED has faster response speed, higher contrast ratio and wider viewing angle. AMOLED is an autonomous light-emitting device, which can realize wide viewing angle display, and can realize flat panel display such as ultra-thin display and flexible display without backlight matching. AMOLED can emit light because the driving transistor ...

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a pixel circuit, an organic electroluminescent display panel, and a display device, which are used to solve the problem in the prior art that the screen flickers due to abnormal drive current output by the pixel circuit when the display panel is turned on for the first frame. problem, as well as the problem that the display panel cannot complete the normal display due to the positive and negative potential receiving pressure at the low-level signal end of the pixel circuit, which triggers the self-protection function of the power signal chip

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