CN115909900A - Supporting assembly and display device - Google Patents

Abstract

The present disclosure provides a support assembly including a support plate and an elastic support structure, the support assembly being used to support a flexible display panel and having an expanded state and a contracted state. The support plate comprises a first sub-support plate and a second sub-support plate arranged to be slidable in a first direction relative to the first sub-support plate to switch the support assembly between the expanded state and the collapsed state. The elastic support structure is arranged on one side of the support plate opposite to the support surface of the support plate. Set up elastic support structure in the one side that deviates from the holding surface of backup pad to utilize elastic support structure to support the butt joint department of first sub-backup pad and second sub-backup pad in the backup pad, there is the segment difference in the butt joint department that this kind of mode can avoid first sub-backup pad and second sub-backup pad, thereby reaches the effect of the roughness on improvement flexible display panel's surface.

Description

Support assembly and display device

technical field

The present disclosure relates to the field of display technology, and in particular, to a support assembly and a display device.

Background technique

A flexible display panel is a display device formed based on a flexible base material. Since the flexible display panel has the characteristics of rollability, wide viewing angle, and portability, the flexible display panel has broad application prospects in portable electronic devices. For example, as a new application form, the scrolling screen has been widely researched and developed in the display industry. While expanding the display area of the screen, the scrolling screen can also greatly reduce the volume of the terminal product.

However, there is a problem of insufficient flatness of the scroll screen, so it is necessary to provide a support assembly to improve the problem of insufficient flatness of the surface of the flexible display panel, thereby avoiding poor perception when users use it.

Contents of the invention

The present disclosure provides a support assembly and a display device. The support assembly is used to support a flexible display panel, and has an unfolded state and a contracted state. The support assembly includes: a support plate, including a first sub-support plate and a second sub-support plate. The sub-support plate is configured to be slidable relative to the first sub-support plate along the first direction, so that the support assembly can be switched between the expanded state and the retracted state; and an elastic support structure is arranged on the support plate opposite to the support surface of the support plate Wherein, when the support assembly is in the unfolded state, the elastic support structure is supported at the junction of the first sub-support plate and the second sub-support plate, so that the support surface of the first sub-support plate and the second sub-support plate The support surface is even.

An elastic support structure is provided on the side of the support plate away from the flexible display panel, and the elastic support structure is used to support the joint of the first sub-support plate and the second sub-support plate in the support plate, which can avoid the first There is a step difference between the sub-support plate and the second sub-support plate, so as to achieve the effect of improving the flatness of the surface of the flexible display panel.

In at least one embodiment of the first aspect of the present disclosure, when the support assembly is in a contracted state, the second sub-support plate is located on a side of the first sub-support plate opposite to the support surface of the first sub-support plate.

In at least one embodiment of the first aspect of the present disclosure, the elastic support structure is fixed relative to the first sub-support plate, and the elastic support structure is slidably connected to the second sub-support plate.

In at least one embodiment of the first aspect of the present disclosure, at least one elastic support structure is provided at the butt joint of the support plate, and at least A guide rail, so that the elastic support structure slides in the guide rail as the second sub-support plate is deployed.

In at least one embodiment of the first aspect of the present disclosure, the support assembly further includes a middle frame, the middle frame includes a bottom surface on a side of the support plate away from the support surface of the support plate, and the elastic support structure is located between the bottom surface and the support plate, And one end of the elastic supporting structure facing the bottom is fixedly connected with the bottom.

In at least one embodiment of the first aspect of the present disclosure, the elastic support structure includes a spring whose deformation decreases as the support assembly is deployed.

Preferably, the elastic supporting structure further includes a rotating supporting structure connected to the second sub-supporting plate, and the spring is arranged between the top and the bottom of the rotating supporting structure.

Wherein, when the support assembly is retracted from the expanded state to the retracted state, it can drive the rotating support structure to rotate to compress the spring.

In at least one embodiment of the first aspect of the present disclosure, when the support assembly is in the unfolded state, the first sub-support plate includes a first end surface facing the second sub-support plate, and the second sub-support plate includes a first end surface facing the first sub-support plate. The second end surface of the sub-support plate, the shape of the first end surface and the second end surface match, and the second end surface is located on the side of the first end surface away from the support surface of the support plate.

Preferably, the first end surface is inclined or stepped, and the second end surface is inclined or stepped matching the first end surface.

In the embodiment of the present disclosure, an elastic support structure is provided at the bottom of the second sub-support plate. When the display device is unfolded by the elastic support structure, the second sub-support plate receives an upward support force and closely adheres to the first sub-support plate. In the contracted state of the display device, the elastic support structure is compressed downward, which can ensure the storage of the support plate.

A second aspect of the present disclosure provides a display device, which includes a flexible display panel and the support assembly in the above first aspect.

In at least one implementation of the second aspect of the present disclosure, the display device further includes a reel, and the flexible display panel is partially wound around the reel.

In at least one implementation of the second aspect of the present disclosure, the first sub-support plate is bonded to the flexible display panel, and the surface of the second sub-support plate is provided with a magnetic attraction structure that cooperates with the flexible display panel to be adsorbed and fixed.

Description of drawings

FIG. 1 is a schematic top view of a display device in a contracted state according to an embodiment of the present disclosure.

FIG. 2 is a schematic top view of a display device in an unfolded state according to an embodiment of the present disclosure.

FIG. 3 is a schematic cross-sectional view of a display device in a contracted state according to an embodiment of the present disclosure.

FIG. 4 is a schematic cross-sectional view of a display device in an unfolded state provided by an embodiment of the present disclosure.

FIG. 5 is a schematic cross-sectional view of a display device in a half-expanded state according to an embodiment of the present disclosure.

FIG. 6 is a three-dimensional assembly diagram of a middle frame of a display device provided by an embodiment of the present disclosure.

FIG. 7 is a schematic cross-sectional view of a junction of a first sub-support plate and a second sub-support plate of a display device according to an embodiment of the present disclosure.

FIG. 8 is a schematic cross-sectional view of a junction of a first sub-support plate and a second sub-support plate of a display device according to an embodiment of the present disclosure.

FIG. 9 is a schematic cross-sectional view of an elastic support structure of a display device provided by an embodiment of the present disclosure.

FIG. 10 is a schematic top view of a second sub-support plate of a display device according to an embodiment of the present disclosure.

FIG. 11 is a schematic top view of a second sub-support plate of a display device according to an embodiment of the present disclosure.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.

As a new form of flexible screen, the scroll screen has been extensively researched and developed in the display industry. The scroll screen has the advantages of large display size and portability, and is more and more favored by consumers. The display device using the scroll screen includes a display area and a non-display area, and can be expanded from a contracted state to an expanded state, so that the area of the display area of the display device is larger than that of the display device in the contracted state. Therefore, the display device using the scroll screen has a larger display area in the unfolded state and a smaller volume in the contracted state. However, during the unfolding process of the scrolling screen, the flexible display panel will be deformed due to the force, and some parts of the surface of the flexible display panel will bulge, resulting in poor perception when users use it. Therefore, how to improve the screen body of the scrolling screen The problem of low flatness is the current research focus.

In order to improve the problem of low surface flatness of the flexible display panel, a stretchable support plate is provided on the backlight side of the flexible display panel, and the flexible display panel is supported by the stretchable support plate to improve the problem of insufficient flatness of the flexible display panel . However, the fixity of the telescopic support plate is not good, and it is easy to move up and down, and there are height differences in different parts of the telescopic element.

In view of this, the present disclosure provides a support assembly and a display device including the support assembly, where the support assembly includes a support plate and an elastic support structure. The display device includes a flexible display panel and a supporting component for supporting the flexible display panel. The supporting plate is arranged on the backlight side of the flexible display panel to support the flexible display panel, including a first sub-supporting plate and a second sub-supporting plate, and the second sub-supporting plate is arranged relative to the first sub-supporting plate along the unfolding direction of the flexible display panel. Can slide. The elastic support structure is arranged on the side of the support plate away from the flexible display panel, corresponding to the junction of the first sub-support plate and the second sub-support plate. By arranging an elastic support structure on the side of the support plate away from the display panel, the joint of the first sub-support plate and the second sub-support plate in the support plate can be supported, avoiding the first sub-support plate and the second sub-support There is a level difference at the butt joints of the boards, thereby achieving the effect of improving the flatness of the surface of the flexible display panel and improving the user's visual experience when using the scrolling screen.

The specific structure of the display device in at least one embodiment of the present disclosure will be described below with reference to the accompanying drawings. In these drawings, a spatial Cartesian coordinate system is established based on the surface where the flexible display panel is located to describe the positions of various structures in the display device. In the space rectangular coordinate system, the X axis and the Y axis are parallel to the surface where the display panel is located, the Z axis is perpendicular to the surface where the display panel is located, and the positive direction of the Z axis is the light emitting direction of the display panel.

In the following figures, the display device 100 is taken as an example for illustration. However, the present disclosure is not intended to limit the specific type of the display device 100 . Optionally, the display device 100 may also be any one of various types of computer system devices that are mobile or portable and perform wireless communication. In some cases, the display device 100 may perform various functions (eg, play music, display video, store pictures, and receive and send phone calls). Specifically, the display device 100 may be a portable game device, a laptop computer, a PDA, a portable Internet device, a music player, and a data storage device.

It should be noted that the present disclosure also provides a support assembly. For ease of understanding, while introducing the specific structure of the display device, the specific structure of the support assembly will also be described.

FIG. 1 is a schematic top view of a display device in a contracted state according to an embodiment of the present disclosure. FIG. 2 is a schematic top view of a display device in an unfolded state according to an embodiment of the present disclosure. FIG. 3 is a schematic cross-sectional structure diagram along line AA in FIG. 1 . FIG. 4 is a schematic cross-sectional structure diagram along line BB in FIG. 2 . As shown in FIGS. 1-4 , the display device includes a flexible display panel 110 and a supporting component. The support assembly includes a support plate 120 and an elastic support structure 130, and the support assembly has an expanded state and a contracted state.

As shown in FIG. 2 and FIG. 3 , the display device 100 includes a display area 102 and a non-display area 101 , and the flexible display panel 110 can be extended along the unfolding direction to increase the area of the display area 102 of the display device 100 . Specifically, in an optional embodiment, referring to FIG. 2 , the positive direction of the X-axis is taken from left to right, and the negative direction of the X-axis is taken from right to left, and the display device 100 shown in FIG. 2 is For example, the unfolding direction of the flexible display panel 110 is the negative direction of the X axis.

Optionally, the flexible display panel 110 may be an Organic Light-Emitting Diode (OLED for short) display panel. Specifically, the flexible display panel 110 includes a flexible substrate, and a plurality of organic light-emitting diodes (Organic Light-Emitting Diode, OLED for short) arranged on the flexible substrate, at least one organic light-emitting diode constitutes a sub-pixel of the flexible display panel 110. An organic light emitting diode is a device that utilizes a multilayer organic thin film structure to generate electroluminescence. Specifically, an organic light emitting diode may include an anode layer, a light-emitting functional layer, and a cathode layer sequentially stacked on a substrate. The light-emitting functional layer includes at least a light-emitting layer. Optionally, the light-emitting functional layer may also include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and the like. Under the action of an electric field in the organic light-emitting diode, the holes generated in the anode layer and the electrons generated in the cathode layer will move and migrate to the light-emitting layer respectively. When holes and electrons meet in the light-emitting layer, energy excitons are generated, thereby exciting the light-emitting molecules in the light-emitting layer to finally generate visible light.

The support plate 120 is arranged on the backlight side of the flexible display panel 110 to support the flexible display panel 110, including a first sub-support plate 121 and a second sub-support plate 122, and the second sub-support plate 122 is arranged relative to the first sub-support plate 122 along the first direction. The sub-support plate 121 is slidable to switch the support assembly between the expanded state and the retracted state. Wherein, the first direction refers to an unfolding direction or a contracting direction of the flexible display panel 110 .

In an optional embodiment, as shown in FIG. 3 , when the support assembly is in a contracted state, the second sub-support plate 122 is located on the side of the first sub-support plate 121 opposite to the support surface of the first sub-support plate 121 . As shown in FIG. 4 , when the support assembly is in the unfolded state, the side of the second sub-support plate 122 facing the flexible display panel 110 and the side of the first sub-support plate 121 facing the flexible display panel 110 are both in contact with the flexible display panel 110 . As shown in Figure 5, when the support assembly is in a semi-expanded state, the joint of the second sub-support plate 122 and the first sub-support plate 121 is an inclined plane, and the second sub-support plate 122 and the first sub-support plate 121 are at the joint The slope portion of the second sub-support plate 122 is separated from the flexible display panel 110 on a side facing the flexible display panel 110 .

The joint of the second sub-support plate 122 and the first sub-support plate 121 refers to the contact surface where the second sub-support plate 122 and the first sub-support plate 121 cooperate with each other in the unfolded state. In an optional embodiment, the side of the first sub-support plate 121 facing the deployment direction (that is, the side of the first sub-support plate 121 facing the negative direction of the X-axis) is the second sub-support plate 122 and the first sub-support plate. 121 at the docking station.

Specifically, the support assembly further includes a middle frame 150 , and the first sub-support plate 121 can be fixedly connected to a part of the middle frame 150 . The middle frame 150 may include a part that expands and contracts along the unfolding direction of the flexible display panel 110 , so as to drive the second sub-support plate 122 to be slidably connected to the first sub-support plate 121 along the unfolding direction of the flexible display panel 110 . Optionally, the middle frame 150 may be a frame formed of metal or plastic material.

As shown in FIG. 6 , the middle frame 150 includes a main body 151 and a telescopic portion 152 that can stretch back and forth relative to the main body 151 . The side wall of the main body 151 parallel to the X-axis is slidably connected to the side wall of the telescopic portion 152 parallel to the X-axis. A surface of the first sub-support plate 121 facing the middle frame 150 may be fixedly connected to an upper surface of the main body 151 . The second sub-support plate 122 may be slidably or elastically connected to the sidewall of the telescopic portion 152 . For example, in the process of the support assembly from the retracted state to the unfolded state, the second sub-support plate 122 will move upward relative to the telescopic part; Move down on the telescopic part.

The display device 100 further includes a roll 140 , and the flexible display panel 110 is partially wound around the roll 140 . A side of the middle frame 150 close to the reel 140 is directly or indirectly connected to the reel 140 , and a part of the middle frame 150 connected to the second sub-support plate 122 moves along with the movement of the reel 140 . Specifically, the telescopic part 152 is directly or indirectly connected to the scroll shaft 140 , and moves along with the scroll shaft 140 in the unfolding direction of the flexible display panel 110 .

Optionally, the middle frame 150 may also be of other structures, as long as it can realize the function of supporting the support plate 120 and expanding and contracting along the unfolding direction of the display device. For example, the side walls of the telescopic part parallel to the X-axis may be a structure connected by multiple hinges, the bottom surface of the main body may have a hollow design, and the main body and the telescopic part are connected by hinges or guide rails. The embodiments of the present disclosure are not intended to limit the specific structure of the middle frame.

7-8 are schematic cross-sectional views of the junction of the first sub-support plate 121 and the second sub-support plate 122 provided by at least one embodiment of the present disclosure. As shown in Figures 7 and 8, when the flexible display panel is in an unfolded state, the first sub-support plate includes a first end surface 1211 facing the second sub-support plate, and the second sub-support plate includes a first end surface 1211 facing the first sub-support plate. The second end surface 1221 of the first end surface 1211 and the second end surface 1221 are matched in shape, and the second end surface 1221 is located on the side of the first end surface 1211 away from the flexible display panel. When the flexible display panel is in the unfolded state, the second sub-support plate 122 is under the first sub-support plate 111, and the first sub-support plate 111 is fixed, so the first sub-support plate 121 plays a role in supporting the second sub-support plate 111. The sub-support plate 122 acts as a limiter in the Z-axis direction, so as to ensure that the surface of the second sub-support plate 112 facing the flexible display panel is not higher than the surface of the first sub-support plate 111 facing the flexible display panel.

Through the mutual cooperation between the second end surface 1221 and the first end surface 1211, the first sub-support plate 121 can play the role of limiting the second sub-support plate 122, preventing the height of the upper surface of the second sub-support plate 122 from being higher than The first sub-support plate 121 , this method can avoid the difference in height between the first sub-support plate 121 and the second sub-support plate 122 , resulting in a level difference between the first sub-support plate 121 and the second sub-support plate 122 when connected. In addition, through the cooperation between the second end surface 1221 and the first end surface 1211 , there will be no gap when the two are docked, so as to achieve a better supporting effect on the flexible display panel.

Optionally, as shown in FIG. 3 and FIG. 4 , the first end surface 1211 is an inclined surface, and the second end surface 1221 is an inclined surface matched with the first end surface 1211 . The slope refers to a surface that is not parallel to and not perpendicular to the light-emitting surface of the flexible display panel, that is, the angle between the first end surface 1211 and the light-emitting surface of the flexible display panel is an acute angle or an obtuse angle. As shown in FIG. 7 , the first end surface 1211 is a surface composed of an inclined surface and two surfaces perpendicular to the flexible display panel. As shown in FIG. 8 , the first end surface 1211 is stepped. It should be noted that the first end surface 1211 and the second end surface 1221 may also have other shapes, for example, the first end surface 1211 and the second end surface 1221 may respectively be composed of a plurality of surfaces with different slopes. Optionally, the first end surface 1211 and the second end surface 1221 may also be arcs. The present disclosure is not intended to limit specific shapes of the first end surface 1211 and the second end surface 1221 .

The first end surface 1211 and the second end surface 1221 are not simply planes perpendicular to the Z-axis direction. The present disclosure enlarges the first sub-support plate 121 in the unfolded state by setting the second end surface 1221 and the first end surface 1211 with matching shapes. The area of the contact surface with the second sub-support plate 122 can ensure the stability of the connection between the first sub-support plate 121 and the second sub-support plate 122 .

As shown in FIG. 3, the elastic support structure 130 is arranged on the side of the support plate 120 away from the flexible display panel 110. When the flexible display panel is in the unfolded state, the elastic support structure 130 is located between the first sub-support plate 121 and the second sub-support The butt joint of the board 122. The elastic support structure 130 at the junction of the first sub-support plate 121 and the second sub-support plate 122 refers to the orthographic projection of the elastic support structure 130 on the flexible display panel 110 and the first sub-support plate 121 and the second sub-support plate 122 The orthographic projections of the butt joints (that is, the first end surface 1211) on the flexible display panel 110 at least partially overlap, for example, the orthographic projections of the elastic support structure 130 on the support plate 120 are located The joint of the plate 122 is within the orthographic projection on the flexible display panel 110, or the orthographic projection of the elastic support structure 130 on the support plate 120 covers the joint of the first sub-support plate 121 and the second sub-support plate 122. Orthographic projection on panel 110. Specifically, the display side end of the elastic support structure 130 away from the flexible display panel 110 may be fixedly connected to the middle frame 150 . The other end of the elastic support structure 130 is slidably connected to the second sub-support plate 122 . Specifically, one end of the elastic support structure 130 facing the display side of the flexible display panel 110 is slidably connected to the second sub-support plate 122 .

The elastic support structure 130 can produce large elastic deformation when it is loaded, and convert mechanical work or kinetic energy into deformation energy. After unloading, the deformation of the elastic support structure 130 disappears and returns to its original shape, and at the same time, the deformation energy is converted into mechanical energy. work or kinetic energy. Optionally, as shown in FIGS. 3 and 4 , the elastic support structure 130 may include a spring 131 , for example, the spring 131 may be a compression spring. The compression spring is easy to manufacture, reliable, low in price, and has a long service life. In one embodiment, the compression spring may be a tower spring. The tower spring has a small volume and a large load, and can bear greater pressure and store more energy.

Optionally, at least one elastic support structure 130 is provided at the joint of the support plate 120 , and at least one guide rail is provided on the side opposite to the support surface of the second sub-support plate 122 when the support assembly is in a retracted state. For example, in one embodiment, multiple elastic support structures 130 are provided, and the side of the second sub-support plate 122 facing away from the flexible display panel 110 is provided with multiple elastic support structures 130 along the unfolding direction of the flexible display panel 110. A plurality of guide rails (not shown), so that the plurality of elastic support structures 130 slide in the guide rails as the flexible display panel 110 is unfolded. Specifically, a plurality of elastic supporting structures 130 are arranged at intervals along the Y-axis direction, which can provide a relatively uniform supporting force at the joint, so as to ensure the flatness of the supporting plate 120 . The side of the second sub-support plate 122 away from the first sub-support plate 121 is provided with a plurality of guide rails along the unfolding direction of the flexible display panel 110, that is to say, the plurality of guide rails are arranged along the X axis, and the plurality of guide rails and The plurality of elastic supporting structures 130 correspond to each other, so as to prevent the elastic supporting structures 130 from moving in the Y-axis direction and affecting the supporting effect.

Optionally, the deformation amount of the spring 131 decreases with the expansion of the flexible display panel 110 . Specifically, when the spring 131 is a compression spring, the distance between the second sub-support plate 122 and the bottom surface 1511 of the main body 151 is smaller in the contracted state of the display device 100 , and the second sub-support plate 122 is smaller in the unfolded state of the display device 100 . The distance between the sub-support plate 122 and the bottom surface 1511 of the main body 151 is relatively large, so the compressed deformation of the spring 131 decreases as the display device 100 unfolds.

The amount of deformation of the spring 131 can be adjusted according to the type of the spring 131, and an appropriate spring 131 can be selected according to the design requirements of the display device 100, so as to ensure that the display device 100 is provided with light that is directed towards the flexible display panel 110 when the display device 100 is unfolded. In this way, the second sub-support plate 122 can be prevented from being lower than the sub-support plate 120 .

In one embodiment of the present disclosure, the elastic supporting structure 130 further includes a rotating supporting structure 132 connected to the second sub-supporting plate 122, and the spring 131 is arranged between the top 1322 and the bottom 1321 of the rotating supporting structure 132; wherein, in the flexible display When the panel 110 is retracted from the unfolded state to the contracted state, the rotating support structure 132 rotates to compress the spring 131 .

As shown in Figure 9, the rotating support structure 132 includes a bottom 1321, a top 1322, a rotating shaft 1324 and a connecting piece 1323 connected to the bottom 1321 through the rotating shaft 1324, the spring 131 is arranged between the top 1322 and the bottom 1321, and the top 1322 is received When the pressure changes, the rotating shaft 1324 rotates to change the distance between the top 1322 and the bottom 1321 , thereby compressing the spring to produce deformation. The bottom surface of the rotating support structure 132 is fixedly connected to the bottom surface 1511 of the main body 151, which can increase the contact area between the elastic support structure 130 and the bottom surface 1511 of the main body 151, so that this structure can make the connection between the elastic support structure 130 and the middle frame 150 more stable. At the same time, the spring 131 is located in the rotation support structure 132, which can limit the direction of the spring 131 in the Z-axis, and can play a guiding role to avoid damage to the spring 131.

Optionally, the elastic support structure 130 can also be composed of leaf springs or other elastic members. This disclosure is not intended to limit the specific structure of the elastic support structure 130, and the types of parts included in the elastic support structure 130 can be adaptively adjusted according to the needs of use. .

The surface of the first sub-support plate 121 facing the flexible display panel 110 can be fixedly connected to the flexible display panel 110, for example, the surface of the first sub-support plate 121 facing the flexible display panel 110 can pass through the flexible display panel 110. Glue bonding.

In order to improve the degree of attachment between the second sub-support plate 122 and the flexible display panel 110 when the support assembly is unfolded, so as to ensure the flatness of the flexible display panel 110, in at least one optional embodiment of the present disclosure, the second sub-support plate 122 The support plate 122 and the flexible display panel 110 are relatively fixed by means of magnetic attraction. Specifically, the flexible display panel 110 includes magnetic metal, and the surface of the second sub-support plate 122 facing the display side of the display device 100 is provided with a magnetic attraction structure cooperating with the flexible display panel 110 for adsorption and fixing. Optionally, the surface of the second sub-support plate 122 facing the display side of the display device 100 includes a plurality of magnetic attraction structures 160 arranged at intervals. As shown in FIGS. 10 and 11 , a plurality of magnetic attraction structures 160 can be embedded in the second sub-support plate 122 . The plurality of magnetic attraction structures 160 may be uniformly distributed, for example, the plurality of magnetic attraction structures 160 are distributed in an array. Providing a plurality of evenly distributed magnetic attraction structures 160 on the surface of the second sub-support plate 122 can ensure that the second sub-support plate 122 adheres to the flexible display panel 110 at various positions on the surface facing the display side of the display device 100 .

As shown in FIG. 10 and FIG. 11 , the shape of the magnetic attraction structure 160 can be various shapes such as rectangle, circle and ellipse. Optionally, in at least one embodiment provided by the present disclosure, the entire surface of the second sub-support plate 122 can also be set as a magnetic attraction structure 160 to obtain better adsorption effect.

Optionally, the magnetic attraction structure 160 can be a magnetic coating, which can form an entire magnetic attraction structure on the surface of the second sub-support plate 122 by coating, or a magnetic attraction structure including multiple patterns. The material of the magnetic attraction structure 160 is a magnetic coating, which is more convenient to process and improves the bendability of the magnetic attraction structure. Optionally, the material of the magnetic attraction structure 160 may be magnets, such as neodymium iron boron magnets, ferrite magnets, alnico magnets and the like. When the material of the magnetic attraction structure 160 is a magnet, the magnetic attraction structure 160 can be fixed on the surface of the second sub-support plate by embedding. The magnetic attraction structure 160 can also be an electromagnet, which generates magnetism when energized, and the magnetism disappears when the power is turned off. When the support assembly is in the unfolded state, the electromagnet is energized to generate magnetic adsorption to the flexible display panel 110 . The electromagnet is de-energized to separate the second sub-support plate 122 from the flexible display panel 110 .

In the embodiment of the present disclosure, an elastic support structure 130 is provided on the bottom 1321 of the second sub-support plate 122. When the elastic support structure 130 is in the unfolded state of the display device 100, the second sub-support plate 122 receives an upward support force and the first sub-support. The plates 121 are closely attached, and when the support assembly is in a contracted state, the elastic support structure 130 is compressed downward, which can ensure the storage of the support plate 120 . At the same time, a limit structure is provided at the junction of the second sub-support plate 122 and the first sub-support plate 121 to prevent the height of the second sub-support plate 122 from being higher than that of the first sub-support plate 121 when the display device 100 is unfolded. Therefore, the display device 100 in the present disclosure has good flatness in the unfolded state, which can improve the problem of insufficient flatness of the surface of the flexible display panel 110 , thereby avoiding the situation that the user feels bad when using it.

The above are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure .

Claims (10)

1. A support assembly for supporting a flexible display panel, characterized in that it has an unfolded state and a contracted state, and the support assembly includes: The supporting plate includes a first sub-supporting plate and a second sub-supporting plate, the second sub-supporting plate is configured to be slidable relative to the first sub-supporting plate along a first direction, so that the supporting assembly switching between the expanded state and the collapsed state; and An elastic support structure is arranged on the side of the support plate opposite to the support surface of the support plate; Wherein, when the support assembly is in the unfolded state, the elastic support structure is supported at the junction of the first sub-support plate and the second sub-support plate, so that the support surface of the first sub-support plate flush with the supporting surface of the second sub-supporting plate. 2. The supporting assembly according to claim 1, wherein when the supporting assembly is in a contracted state, the second sub-supporting plate is located between the first sub-supporting plate and the first sub-supporting plate The side opposite the supporting surface. 3. The support assembly according to claim 2, wherein the elastic support structure is fixed relative to the first sub-support plate, and the elastic support structure is slidably connected to the second sub-support plate. 4. The support assembly according to claim 3, characterized in that at least one elastic support structure is provided at the joint of the support plate, and the support assembly is in the contracted state with the second substructure. At least one guide rail is provided on the opposite side of the support surface of the support plate, so that the elastic support structure slides in the guide rail as the second sub-support plate is unfolded. 5. The support assembly according to claim 3, characterized in that, the support assembly further comprises a middle frame, the middle frame includes a bottom surface on the side of the support plate away from the support surface of the support plate, the The elastic support structure is located between the bottom surface and the support plate, and one end of the elastic support structure facing the bottom surface is fixedly connected to the bottom surface. 6. The supporting assembly according to claim 3, wherein the elastic supporting structure comprises a spring, and the deformation amount of the spring decreases as the supporting assembly is expanded; Preferably, the elastic supporting structure further includes a rotating supporting structure connected to the second sub-supporting plate, and the spring is arranged between the top and the bottom of the rotating supporting structure; Wherein, when the support assembly is retracted from the unfolded state to the contracted state, it can drive the rotating support structure to rotate, so as to compress the spring. 7. The support assembly according to claim 1, wherein when the support assembly is in an unfolded state, the first sub-support plate includes a first end surface facing the second sub-support plate, The second sub-support plate includes a second end surface facing the first sub-support plate, the shape of the first end surface matches the second end surface, and the second end surface is located away from the first end surface. One side of the support surface of the support plate. Preferably, the first end surface is inclined or stepped, and the second end surface is inclined or stepped matching the first end surface. 8. A display device, characterized in that it comprises: flexible display panels; and The supporting assembly according to any one of claims 1-7. 9 . The display device according to claim 8 , further comprising a scroll, and the flexible display panel is partially wound around the scroll. 10 . 10. The display device according to claim 8, characterized in that, the first sub-support board is bonded to the flexible display panel, and the surface of the second sub-support board is provided with the flexible display panel. The panel is equipped with a fixed magnetic structure.

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