Flexible display panel and preparation method thereof

Abstract

A flexible display panel and a preparation method thereof are provided. The flexible display panel comprises a thin film transistor array substrate, a light emitting layer, a first retaining wall, a second retaining wall and a packaging layer. The first retaining wall is located in a non-display area and surrounds a display area. The second retaining wall is located in the non-display area and surrounds the first retaining wall. The first retaining wall and the second retaining wall form an annular area. The packaging layer comprises at least one inorganic layer and at least one organic layer,the at least one organic layer covers the first retaining wall and is formed in the annular area, and the packaging layer is located in a closed structure formed by the second retaining wall. By arranging the first retaining wall and the second retaining wall, the organic layer can be prevented from overflowing out of the display panel, the organic layer is limited between the first retaining wall and the second retaining wall, subsequent bending of the flexible display panel is facilitated, and the design of a narrow bezel is realized.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a flexible display panel and a preparation method thereof. Background technique [0002] OLED (Organic Light Emitting Diode, organic electroluminescent diode) display devices are increasingly used in the field of high-performance displays because of their characteristics such as self-luminescence, high response speed, wide viewing angle, and the ability to be fabricated on flexible substrates. among. At present, in the preparation of OLED display devices, vacuum evaporation technology and inkjet printing technology are usually used to prepare organic functional film layers. Among them, the technical equipment investment and maintenance costs of vacuum evaporation technology are high, and the waste of materials is serious, while spraying Ink printing technology can effectively solve the problem of low material utilization, and can be applied in the preparation of large-area OLED...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a flexible display panel and a preparation method thereof, in order to solve the problem that in the existing flexible display panel, because a retaining wall structure is set to prevent ink overflow of the organic encapsulation layer, in order to realize the narrow frame design, it is necessary to place If the region is bent, cracks will appear between the two inorganic packaging layers due to excessive stress, resulting in package failure and affecting the service life of the flexible display panel.

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