Peripheral circuit structure of oled display panel and oled display panel

Abstract

The invention provides a peripheral circuit structure of an OLED display panel and the OLED display panel. The peripheral circuit structure of the OLED display panel includes a substrate, an insulating layer provided on the substrate, and wiring provided on the insulating layer; the substrate includes a display area and a frame area surrounding the display area, so The wiring is located in the frame area, and the area corresponding to the insulating layer and the wiring is formed with a plurality of grooves arranged at intervals, and the wiring fills the plurality of grooves. The groove, and filling the wire into the groove can increase the cross-sectional area of ​​the wire, reduce the impedance drop of the wire, improve the display effect of the OLED display panel, and improve uneven brightness.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a peripheral circuit structure of an OLED display panel and the OLED display panel. Background technique [0002] Organic light-emitting diode display devices have excellent characteristics such as self-illumination, no need for backlight, high contrast, thin thickness, wide viewing angle, fast response speed, flexible panels, wide operating temperature range, and simple structure and manufacturing process. It is considered as an emerging application technology for the next generation of flat panel displays. [0003] OLED display devices generally include: a substrate, an anode disposed on the substrate, a hole injection layer disposed on the anode, a hole transport layer disposed on the hole injection layer, a light emitting layer disposed on the hole transport layer, a device An electron transport layer on the light emitting layer, an electron injection layer on the electron ...

AI Technical Summary

Problems solved by technology

[0005] In the existing OLED display device, in order to provide the cathode with a low power supply voltage (VSS), a circle of cathode wiring is formed around the display area in the frame area of ​​the substrate. Sexual connection to receive the low voltage of the power supply from the driver chip, transmit it to the cathode, and drive the OLED in the display area to emit light. With the development of display technology, consumers have higher and higher requirements for the width of the border of the display screen. Frame and frameless display panels are gradually becoming the mainstream, and the impedance drop (IR drop) of the cathode traces in the frame area will cause the voltage of the cathode traces close to the driver chip to be different from the position far away from the driver chip. Leading to uneven brightness, the current common solution is to reduce the impedance by increasing the width of the cathode wiring or the thickness of the metal film layer, but this will lead to an increase in the frame width of the display panel, which does not meet the current narrow frame requirements, and the metal film layer is added The thickness conflicts with the existing process capability

Images