Flexible array substrate and preparation method thereof, and flexible display device

Abstract

The invention discloses a flexible array substrate which comprises a flexible pedestal and a buffering layer arranged on the flexible pedestal, wherein a plurality of thin film transistors are arranged on the buffering layer in an array manner; inter layer dielectrics are arranged on the thin film transistors, and cover the buffering layer; interconnection structural members are arranged between the inter layer dielectrics and the buffering layer; at least one interconnection structural member is correspondingly arranged on each of two sides of each column of thin film transistors; and the interconnection structural members extend towards the direction parallel to a bent shaft of the flexible array substrate. The invention further discloses a preparation method of the flexible array substrate and a flexible display device comprising the flexible array substrate. By the arrangement of the interconnection structural members, the connection performance of the interconnection structure layer in the flexible array substrate is improved, the problem of falling off or breakage of the interconnection structure layer is solved, and the quality of the flexible array substrate is improved.

Description

Technical field [0001] The present invention relates to the technical field of displays, in particular to a flexible array substrate and a preparation method thereof, and also to a flexible display device including the above flexible array substrate. Background technique [0002] Flat-panel display technology has developed rapidly in the past decade, and both the size of the screen and the quality of the display have made great progress. With its bendable characteristics, flexible display devices can be used in many fields that require curved display, such as smart cards, electronic paper, smart labels, and various fields where traditional flat panel display devices can be applied. Flexible display devices are bound to be in the future display product market With its dreamy and beautiful appearance, China has occupied a huge market share. Generally, a flexible display device includes a flexible array substrate and an electroluminescent device arranged in a stack, and a transpare...

AI Technical Summary

Problems solved by technology

The bending of the flexible array substrate has less damage to the organic and metal materials, but the damage to the less flexible inorganic oxide is relatively serious, especially when it is bent to a small radius of curvature, it is easy to cause the above-mentioned Failures such as cracking and delamination of flexible array substrates of inorganic oxides

For the gate insulating layer 8, the gate insulating layer 8 can be patterned to reduce its coverage area to reduce stress, reduce cracking and peeling dislocation problems, but the mutual bonding between the interlayer dielectric layer 9 and the buffer layer 2 The area is large, and the connection performance between the two is poor. When the flexible array substrate is bent, the interlayer dielectric layer 9 is easy to fall off or break from the buffer layer 2, which affects the quality of the flexible array substrate.

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