CROSS-REFERENCE TO RELATED APPLICATION

This application is the National Stage of PCT/CN2019/125605 filed on Dec. 16, 2019, which claims priority under 35 U.S.C. § 119 to Chinese Application No. CN 201911198235.5 filed on Nov. 29, 2019, the disclosure of which is incorporated by reference in its entirety.

BACKGROUND OF INVENTION

Field of Invention

The present application relates to the field of display, and particularly to a flexible display screen and a display device.

Description of Prior Art

With advancement in technology, high-performance electronic products have been introduced, and lightweight, thin, flexible, and bendable consumer electronic products have attracted investment and development from major manufacturers. In order to achieve organic light emitting diode product targets, new materials, new designs and new manufacturing processes must be introduced to improve performance of flexible and bendable OLED products.

Common OLED module structure includes a glass cover plate, a touch panel, a polarizing sheet, a display panel, a back plate, and so on. When bending, because inner and outer layers have different bending radii, if the structure has no compensation design, this will cause an excessively large tensile force at a certain bending angle, which pulls a screen and leads to failure. At the same time, the film layers are mostly made of organic polymer materials, and characteristics of the materials determine that these materials easily slide and loosen during repeated bending or long-term bending, thereby leading to irreversible deformation, which is reflected on products; that is, local unevenness and waviness occur on a display surface, which seriously affects the products' look and feel as well as overall user experience.

SUMMARY OF INVENTION

The purpose of the application is to provide a flexible display screen and a display device to solve a problem of that these materials are easy to creep and relaxation during repeated bending or long-term bending, thereby leading to irreversible deformation, which cause problems such as screen damage that seriously affect the product's perception and overall use experience.

In order to get the target, the application provides a flexible display screen, the flexible display screen includes a display panel, at least one reel, at least one reel restoring mechanism and a flexible layer. The display panel includes a display surface and a bending region. The reel is disposed at a side of the display panel, an axial direction of the reel is parallel to a bending axial of the display panel. The reel restoring mechanism is disposed on a side of the display panel, the reel is corresponding arranged to the reel restoring mechanism. The flexible layer includes a middle portion and a side portion connected to the middle portion, the middle portion of the flexible layer covers a surface of the display panel far away from the display surface, and the side portion of the flexible layer is wound around the reel.

When the display panel is bent, the side portion of the flexible layer disposed on the reel is partially drawn out. When the display panel is restored to a flat state, the reel restoring mechanism drives the reel to rotate and restore, a drawn out portion of the side portion of the flexible layer are rewound around the reel.

Further, the flexible display screen includes a shell, wherein the display panel and the reel are both disposed in the shell.

Further, the reel includes a coiling block and two bearings, wherein the side portion of the flexible layer is wound around an outer wall of the coiling block, the bearings correspondingly are disposed at two ends of the coiling block and set on the shell.

Further, the reel restoring mechanism comprises a spring disposed in the reel.

Further, the reel restoring mechanism includes a restoring hinge disposed in the reel, the restoring hinge comprises a fixed end and a rotating end, the fixed end is secured on the shell, and the rotating end and the coiling block are connected to each other.

Further, material of the flexible layer comprises alloy or organic polymer material.

Further, the display panel includes a display layer, a polarizing sheet and a touch layer. The display layer is disposed on the flexible layer. The polarizing sheet is disposed on the display layer. The touch layer is disposed on the polarizing sheet.

Further, the display panel includes a back plate and a cover plate. The back plate is disposed between the flexible layer and the display layer. The cover plate is disposed on a surface of the touch layer far away from the polarizing sheet.

Further, the display panel includes bonding layers, the bonding layers are separately disposed between the back plate and the display layer, between the display layer and the polarizing sheet, between the polarizing sheet and the touch layer, and between the touch layer and the cover plate.

The application also provides a display device, which includes the flexible display screen as the above.

The benefit of the present application is: in the flexible display screen and the display device of the application, a flexible layer is attached to a back side of the display panel and through cooperation with a reel, two ends of the flexible layer are wound around the reels. When the display panel is bent, a portion of the flexible layer wound around the reel is relaxed to compensate a length of the display panel and to prevent the display panel from being damaged by a tensile force. When the display panel is flattened, the reel employs a certain tensile force to the flexible layer to drive the display panel to be flattened, thereby relieving the problem of uneven surface after bending and improving the product's look and feel.

