Display substrate and manufacturing method thereof, display panel and display device

Abstract

The invention provides a display substrate and a manufacturing method thereof, a display panel and a display device, and belongs to the technical field of display. The display substrate comprises a functional area and a buffer area located between the functional area and the boundary of the display substrate, wherein the functional area comprises a display area provided with an OLED display deviceand a routing area located around the display area, and the buffer area is provided with an inorganic film layer cut-off structure such that the inorganic film layer is discontinuous in the buffer area. The technical solution provided by the invention can prevent the crack of the inorganic film layer of the buffer area from being transmitted to the routing area even the inorganic film layer of the display area, ensure the performance of the display substrate and improve the long-term reliability of the display substrate.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display substrate and a manufacturing method thereof, a display panel, and a display device. Background technique [0002] Organic electroluminescent display (OLED) has become the preferred technology for flexible display devices due to its advantages such as fast response speed, thin thickness, and high contrast ratio, especially its ability to be bendable and flexible. [0003] In the production of OLED display substrates, the OLED display substrate motherboard is cut by laser in the related art, but when cutting the OLED display substrate motherboard, the inorganic film layer is prone to cracks, and the cracks in the buffer zone may be transmitted to the display area The surrounding routing area and even the inorganic film layer in the display area cause water and oxygen in the air to enter the OLED display substrate along the cracks, affecting the performance of th...

AI Technical Summary

Problems solved by technology

[0003] In the production of OLED display substrates, the OLED display substrate motherboard is cut by laser in the related art, but when cutting the OLED display substrate motherboard, the inorganic film layer is prone to cracks, and the cracks in the buffer zone may be transmitted to the display area The surrounding routing area and even the inorganic film layer in the display area cause water and oxygen in the air to enter the OLED display substrate along the cracks, affecting the performance of the OLED display substrate

Images