Flexible display panel and preparation method thereof, display device and display module

Abstract

The invention relates to the technical field of display, and provides a flexible display panel and a preparation method thereof, a display device and a display module. The flexible display panel comprises a plane area, a first bending area, a second bending area and a corner bending area, the first bending area is connected to the first edge of the plane area in the first direction, the second bending area is connected to the second edge of the plane area in the second direction, and a set angle is formed between the second direction and the first direction; a corner bending area is connectedto the corner of the plane area; a corner bending area is arranged on the base and connected between the first bending area and the second bending area, the corner bending area is provided with a plurality of first hole sets, after the corner bending area is bent, the width of the first hole set located in the middle of the corner bending area is increased, and the width of the first hole set located in the edge area of the corner bending area is decreased. Tensile strain and compressive strain are absorbed through the first hole set, and attaching cracks and edge area wrinkles of the flexibledisplay panel are reduced. No bubbles can be generated.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a flexible display panel and a method for preparing the flexible display panel, a display device including the flexible display panel, and a display module including the flexible display panel. Background technique [0002] With the rapid development of display technology, the trend of the aesthetics and lightness of electronic products has gradually emerged. OLED (Organiclight-Emitting Diode, organic light emitting diode) Flexible display surface-fitting also develops rapidly. With the maturation of OLED flexible display two-sided curved bonding process, OLED flexible display four-sided curved bonding is increasingly favored by panel manufacturers and mobile phone manufacturers. [0003] However, a technical difficulty in the four-sided curved bonding of OLED flexible displays is corner bonding. As the depth of the OLED flexible display entering the corner arc of the c...

AI Technical Summary

Problems solved by technology

The edge areas of the four corners of the screen are subject to large tangential compressive stress, which is prone to wrinkles

Moreover, due to the design of the mechanism equipment and the flexible display panel, the profiling of the flexible display is often insufficient when the four sides of the OLED flexible display are curved, and the four corners of the flexible display will be warped, resulting in the flexible display and the cover. Pre-contact occurs, that is, the edge of the flexible display is in contact with the cover first, and then the inside is in contact, forming air bubbles

In this way, after bonding and defoaming, cracks are prone to occur, resulting in poor bonding.

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