Pixel, pixel driving method and organic light emitting displayer

Abstract

The invention discloses a pixel, a pixel driving method and an organic light emitting displayer. A source electrode of a first transistor is connected to a data control line; a drain electrode is connected to a source electrode of a second transistor through a first node; the grids of the first transistor, the fourth transistor and the fifth transistor are connected to a second scanning control line; the grid of the second transistor is connected to the source electrode of the fourth transistor through the third node; the drain electrode of the second transistor is connected to the drain electrode of the fifth transistor through a fifth node; the grid of the third transistor is connected to the drain electrode and is connected to the drain electrode of the fourth transistor and the source electrode of the fifth transistor through the fourth node; and a first capacitor is connected between the third node and a first power supply end. The third transistor is connected between the grid of the first transistor and the fourth node and the third node is charged through the fourth node, which maintains the grid voltage of the second transistor stable and improves the image display effect.

Description

technical field [0001] The present invention relates to the technical field of flat panel display, in particular to a pixel, a driving method of the pixel and an organic light emitting display. Background technique [0002] Among various types of flat panel display devices, since active matrix organic light emitting display devices use self-luminous organic light emitting diodes (OLEDs) to display images, they usually have a short response time, are driven with low power consumption, and have relatively better brightness and color purity characteristics, so organic light emitting display devices have become the focus of next generation display devices. OLEDs can be driven either passive matrix (PM) or active matrix (AM). Compared with the PM drive, the AM drive has the advantages of larger displayed information capacity, lower power consumption, long device life, and high picture contrast, while the PM drive is suitable for low-cost, simple display devices. [0003] For a ...

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Problems solved by technology

[0007] but, figure 2 The problem with the pixel circuit is that there are still two leakage currents at the N2 node. When the required OLED brightness is relatively high, the N2 node will still be raised by the voltage jump of the scanning signal provided by the first scanning control line S1 during the light-emitting phase. , which is undesirable. Compared with the traditional 6T1C pixel circuit, the brightness is significantly reduced, which may affect the display effect of the screen.

In addition, the introduction of capacitor C2 will increase the load capacity of the drive signal S1, and large-size screens may be affected

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