CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority to Chinese patent application No. CN202010479877.9 filed with CNIPA on May 29, 2020, the disclosure of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies, and particularly, to a display panel, a driving method and a display device.

BACKGROUND

Currently, Organic Light-Emitting Diode (OLED) display panels and Liquid Crystal Display (LCD) display panels are two mainstream display panel technologies in the display field. OLED display panels are widely popular among people because of their advantages such as self-luminescence, high contrast, small thickness, high response speed, and applicability to flexible substrates.

The OLED element of an OLED display panel is a current driven element, and a corresponding pixel drive circuit is needed to provide a drive current for the OLED element, so that the OLED element can emit light. The pixel drive circuit of the OLED display panel generally includes a drive transistor, an initialization transistor, a storage capacitor, etc. The drive transistor can generate a drive current for driving the OLED element according to the voltage of a gate electrode of the drive transistor. The gate electrode of the drive transistor is electrically connected to the initialization transistor. The characteristics of these transistors are such that the charges on the gate electrode of the drive transistor continuously leak through the initialization transistor, so that the voltage of the gate electrode of the drive transistor is unstable, affecting the brightness of the light-emitting element, and eventually the display effect is affected.

SUMMARY

Embodiments of the present disclosure provide a display panel, a driving method, and a display device.

In a first aspect, an embodiment of the present disclosure provides a display panel. The display panel includes: a substrate; multiple sub-pixels located on one side of the substrate and arranged in an array; and at least one switch module. Each sub-pixel includes a pixel drive circuit and a light-emitting element; the pixel drive circuit includes an initialization transistor and a drive transistor, where the initialization transistor and the drive transistor each include a first electrode, a second electrode, and a gate electrode; the first electrode of the initialization transistor is electrically connected to the gate electrode of the drive transistor, and the drive transistor provides a drive current to the light-emitting element; the second electrodes of the initialization transistors of at least two sub-pixels are connected to an output terminal of a same switch module; an input terminal of the switch module is electrically connected to an initialization signal terminal; the switch module is used to transfer an initialization signal to the second electrode of the initialization transistor.

In a second aspect, an embodiment of the present disclosure further provides a driving method for a display panel. The driving method for the display panel is applied to the display panel according to the first aspect, and the driving method includes the following steps.

In an initialization phase, the initialization transistor and the switch module are turned on, and an initialization signal is written to a control terminal of the drive transistor.

In a light-emitting phase, the initialization transistor and the switch module are turned off, and the drive transistor drives the light-emitting element to emit light.

In a third aspect, an embodiment of the present disclosure further provides a display device. The display device includes the display panel of the first aspect.

