CROSS REFERENCE TO RELATED APPLICATIONS

This application is a national stage under 35 U.S.C. 371 of PCT/CN2019/127294, filed on Dec. 23, 2019, which claims priority under 35 U.S.C. 119 of Chinese Patent Application No. 201911038227.4, filed on Oct. 29, 2019, the disclosure of which is incorporated by reference in its entirety.

FIELD OF INVENTION

The present application relates to the field of display technologies, and in particular, to a flexible display device.

BACKGROUND OF INVENTION

Flexible display devices are more resistant to bending and are light weight, and display devices equipped with flexible organic light-emitting diode (OLED) display devices are becoming more and more popular in the market. The display devices usually include a variety of assemblies and components carried within or on a protective housing. Each of the assemblies and each of the components perform their respective functions, but the numerous assemblies and components often make the display devices thicker and heavier overall, and are not conducive to lightweight and thin designs. In addition, current display devices often have a single function, making their scope of usage limited.

Therefore, the current technology has defects and urgently needs improvement.

SUMMARY OF INVENTION

Technical Problem

The present application provides a flexible display device capable of solving problems of heavy weight and single function of current display devices.

Technical Solutions

To solve the above problems, the technical solutions provided in the present application are as follows.

The present application provides a flexible display device including a flexible display assembly, a housing, at least one scrolling assembly, and an optical assembly;

wherein a storage cavity is formed inside the housing, the housing is provided with at least one opening penetrating the storage cavity, the at least one scrolling assembly is fixed to the housing;

wherein an outer surface of the housing includes a support surface, the flexible display assembly is disposed on the support surface, an extension portion of the flexible display assembly extends into the storage cavity through the at least one opening; and

wherein the housing includes a first housing and a second housing opposite to each other, the first housing and the second housing are configured to slide relative to each other in a first direction to increase or decrease an area of the support surface, and are configured to pull out or accommodate the extension portion through the at least one scrolling assembly;

wherein the at least one scrolling assembly is disposed in an axial direction parallel to the support surface and perpendicular to the first direction, the at least one scrolling assembly includes at least a hollow shaft, and the optical assembly is embedded in the hollow shaft.

In the flexible display device of the present application, the housing is provided with apertures at positions corresponding to both ends of the hollow shaft, the hollow shaft is connected to the housing, and a diameter of each of the apertures is less than or equal to an outer diameter of the hollow shaft.

In the flexible display device of the present application, the optical assembly includes one or more combinations of a convex lens, a concave lens, an optical prism, and an optical film, and distributed at intervals along an axial direction of the hollow shaft.

In the flexible display device of the present application, diameters of the convex lens, the concave lens, the optical prism, and the optical film are all less than or equal to an inner diameter of the hollow shaft.

In the flexible display device of the present application, an objective lens is the convex lens, an eyepiece is the concave lens, and the optical prism is disposed between the convex lens and the concave lens; alternatively, both the objective lens and the eyepiece are the convex lenses, and the optical prism is disposed between the two convex lenses.

In the flexible display device of the present application, the at least one scrolling assembly is disposed in the storage cavity, and is configured to enroll or spread the extension portion.

In the flexible display device of the present application, the at least one scrolling assembly is fixed to the first housing, and a first end of the flexible display assembly is connected to the at least one scrolling assembly; alternatively, the at least one scrolling assembly is fixed to the second housing, and a second end of the flexible display assembly is connected to the at least one scrolling assembly.

In the flexible display device of the present application, the at least one scrolling assembly is disposed on the first housing, an another scrolling assembly is disposed on the second housing, a first end of the flexible display assembly is connected to the at least one scrolling assembly, and a second end of the flexible display assembly is connected to the another the scrolling assembly.

In the flexible display device of the present application, each the scrolling assembly includes a coil spring and the hollow shaft, the hollow shaft and the first housing and/or the second housing are rotationally connected, a first end of the coil spring is fixedly connected to the hollow shaft, and a second end of the coil spring is fixedly connected to the flexible display assembly.

In the flexible display device of the present application, a focusing device is disposed on the first housing and/or the second housing, and the focusing device is configured to adjust a focal length of the optical assembly.

In the flexible display device of the present application, the optical assembly includes an eyepiece and an objective lens, and the focusing device is configured to move the eyepiece in the axial direction of the hollow shaft relative to the objective lens.

In the flexible display device of the present application, the at least one scrolling assembly is disposed at an end of the first housing, an another scrolling assembly is disposed at an opposite end of the first housing, the at least one opening is formed between the first housing and the second housing, a first end of the flexible display assembly is fixedly connected to the second housing positioning at a side of the at least one opening, the flexible display assembly passes through the support surface and the scrolling assembly and extends from an opposite side of the at least one opening into the storage cavity, and a second end of the flexible display assembly is fixedly connected to an end of the second housing close to the first housing.

In the flexible display device of the present application, each the scrolling assembly includes the hollow shaft, the hollow shaft is rotatably connected to the first housing, and the flexible display assembly is configured to pull out or accommodate the extension portion through the rotation of the hollow shaft when the first housing and the second housing are relatively slid in the first direction.

In the flexible display device of the present application, the first housing includes a first housing body and a first sliding portion fixedly connected to the first housing body, the second housing includes a second housing body and a second sliding portion fixedly connected to the second housing body; the first housing body is disposed opposite to the second housing body, the first sliding portion and the second sliding portion are slidably connected to each other in the first direction, and a support surface formed by an outer surface of the first sliding portion and an outer surface of the second sliding portion is on a same plane of the outer surface of the first sliding portion and the outer surface of the second sliding portion.

In the flexible display device of the present application, the first sliding portion and the second sliding portion are both comb-shaped and engaged with each other.

Beneficial Effect

The beneficial effect of the present application is that the flexible display device provided by the present application reduces an overall weight of the display device by a hollow processing of a solid shaft in the scrolling assembly for accommodating the flexible display assembly in the flexible display device. Without affecting display of the display device, an optical assembly is arranged in a processed hollow shaft. Through different combinations of different lenses in the optical assembly, the display device has different functions such as telescope, magnifying glass, and microscope, etc., thereby realizing diversification of the functions of the display device, making the display device suitable for various environments.

