Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises a display area; the display area comprises a high-transmittance area, a first display area surrounding the high-transmittance area and a second display area located between the first display area and the high-transmittance area. The display panel further comprises a substrate base plate; and a plurality of pixel driving circuits located at one side of the substrate base plate; at least part of the first pixel driving circuit is located in the second display area. The first light-emitting elements locatedon the sides, away from the substrate base plate, of the pixel driving circuits are electrically connected with the first pixel driving circuits in a one-to-one correspondence mode through the anode signal lines. The anode signal line transmits a driving current generated by the first pixel driving circuit to the first light-emitting element; the coupling layer is positioned between the anode signal line and the pixel driving circuit and is insulated from the anode signal line and the pixel driving circuit; and the capacitance of a coupling capacitor formed by the first node of each pixel driving circuit and the coupling structure and / or the anode signal line is within a preset capacitance range, so that the uniformity of a display picture is ensured.

Description

technical field [0001] The present invention relates to the technical field of display panels, in particular to a display panel and a display device. Background technique [0002] With the development of display technology, display devices are gradually progressing from narrow bezels to borderless visual effects to increase the screen-to-body ratio of the display device. The optical sensor modules of the display device with a high screen-to-body ratio, such as cameras and infrared sensors etc., will be set in its display area. At present, in order to make the region where the optical sensor module is disposed have a higher light transmittance, the pixel density of the region where the optical sensor module is disposed is usually reduced. [0003] When the display panel of the display device is an Organic Light-Emitting Diode (OLED) display panel, the OLED element of the OLED display panel is a current-driven element, and a corresponding pixel driving circuit needs to be pro...

AI Technical Summary

Problems solved by technology

[0004] However, due to the different lengths of the anode signal lines that are electrically connected to different pixel circuits located in the transition area, the coupling capacitances formed by each pixel circuit located in the transition area and the anode signal lines are different, resulting in that the anode signal transmitted by each anode signal line is opposite to the The influence of the first node to which the gate of the drive transistor is electrically connected in each pixel circuit is different, causing problems such as display split screens on the display panel, which in turn affects the display effect of the OLED display panel

Images