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 an OLED display panel. The peripheral circuit structure of the OLED display panel comprises a substrate, an insulating layer arranged on the substrate and a wiring arranged on the insulating layer. The substrate comprises a display area and a border area surrounding the display area. The wiring is located in the border area. Multiple grooves arranged at intervals are formed in an area, corresponding to the wiring, of the insulating layer. The wiring fills the grooves. By arranging the grooves under the wiring and filling the grooves with the wiring, the cross-section area of the wiring can be increased, the IR drop of the wiring can be reduced, the display effect of the OLED display panel can be improved, and improvement can be made on the 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

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