Support components and display devices

Abstract

This disclosure provides a support assembly and a display device. The support assembly includes a support plate and an elastic support structure. The support assembly supports a flexible display panel and has an unfolded state and a retracted state. The support plate includes a first sub-support plate and a second sub-support plate. The second sub-support plate is slidable relative to the first sub-support plate along a first direction, allowing the support assembly to switch between the unfolded and retracted states. The elastic support structure is disposed on the side of the support plate opposite to the support surface. By providing the elastic support structure on the side of the support plate away from the support surface, and using the elastic support structure to support the joint between the first and second sub-support plates, a step difference can be avoided at the joint between the first and second sub-support plates, thereby improving the surface flatness of the flexible display panel.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically, to a support component and a display device. Background Technology

[0002] Flexible display panels are display devices formed from flexible substrate materials. Due to their rollability, wide viewing angles, and portability, flexible display panels have broad application prospects in portable electronic devices. For example, rollable screens, as a new application form, are currently being widely researched and developed in the display industry. Rollable screens can significantly reduce the size of end products while expanding the display area.

[0003] However, rollable screens suffer from insufficient flatness. Therefore, it is necessary to provide a support component to improve the flatness of the flexible display panel surface and avoid poor viewing experience for users. Summary of the Invention

[0004] This disclosure provides a support assembly and a display device. The support assembly supports a flexible display panel and has an unfolded state and a retracted state. The support assembly includes: a support plate, including a first sub-support plate and a second sub-support plate, the second sub-support plate being configured to slide relative to the first sub-support plate along a first direction to allow the support assembly to switch between the unfolded state and the retracted state; and an elastic support structure disposed 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 supports the joint between the first sub-support plate and the second sub-support plate, so that the support surfaces of the first sub-support plate and the second sub-support plate are flush.

[0005] An elastic support structure is set on the side of the support plate away from the flexible display panel, and the elastic support structure is used to support the joint between the first sub-support plate and the second sub-support plate in the support plate. This method can avoid the height difference between the first sub-support plate and the second sub-support plate, thereby improving the flatness of the surface of the flexible display panel.

[0006] In at least one embodiment of the first aspect of this disclosure, when the support assembly is in a retracted state, the second sub-support plate is located on the side opposite to the support surface of the first sub-support plate.

[0007] In at least one embodiment of the first aspect of this 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.

[0008] In at least one embodiment of the first aspect of this disclosure, at least one elastic support structure is provided at the joint of the support plate, and at least one guide rail is provided on the side of the support component opposite to the support surface of the second sub-support plate when the support component is in the retracted state, so that the elastic support structure slides in the guide rail as the second sub-support plate unfolds.

[0009] In at least one embodiment of the first aspect of this disclosure, the support assembly further includes a middle frame, the middle frame including a bottom surface located on the side of the support plate opposite to the support surface of the support plate, an elastic support structure located between the bottom surface and the support plate, and one end of the elastic support structure facing the bottom surface being fixedly connected to the bottom surface.

[0010] In at least one embodiment of the first aspect of this disclosure, the elastic support structure includes a spring whose deformation decreases as the support assembly unfolds.

[0011] Preferably, the elastic support structure further includes a rotating support structure connected to the second sub-support plate, with a spring disposed between the top and bottom of the rotating support structure.

[0012] When the support component retracts from the extended state to the retracted state, it can drive the rotating support structure to rotate, thereby compressing the spring.

[0013] In at least one embodiment of the first aspect of this disclosure, when the support assembly is in the deployed state, the first sub-support plate includes a first end face facing the second sub-support plate, the second sub-support plate includes a second end face facing the first sub-support plate, the first end face and the second end face are shaped to match, and the second end face is located on the side of the first end face away from the support surface of the support plate.

[0014] Preferably, the first end face is a slope or a step, and the second end face is a slope or a step that matches the first end face.

[0015] In this embodiment, an elastic support structure is provided at the bottom of the second sub-support plate. When the display device is in the unfolded state, the second sub-support plate is subjected to an upward supporting force and fits tightly against the first sub-support plate. When the display device is in the retracted state, the elastic support structure is compressed downward, which can ensure the storage of the support plate.

[0016] A second aspect of this disclosure provides a display device including a flexible display panel and the support components described in the first aspect.

[0017] In at least one embodiment of the second aspect of this disclosure, the display device further includes a scroll, on which a flexible display panel portion is wound.

[0018] In at least one embodiment of the second aspect of this disclosure, a first sub-support plate is bonded to a flexible display panel, and a second sub-support plate has a magnetic attraction structure on its surface that cooperates with the flexible display panel for adsorption and fixation. Attached Figure Description

[0019] Figure 1 This is a top view schematic diagram of a display device in a retracted state according to an embodiment of the present disclosure.

[0020] Figure 2 This is a top view of a display device in an unfolded state, according to an embodiment of the present disclosure.

[0021] Figure 3 This is a cross-sectional schematic diagram of a display device in a retracted state according to an embodiment of the present disclosure.

[0022] Figure 4 This is a cross-sectional schematic diagram of a display device in an unfolded state according to an embodiment of the present disclosure.

[0023] Figure 5 This is a cross-sectional schematic diagram of a display device in a semi-expanded state according to an embodiment of the present disclosure.

[0024] Figure 6 This is a three-dimensional assembly diagram of the mid-frame of a display device according to an embodiment of the present disclosure.

[0025] Figure 7 This is a cross-sectional schematic diagram of the joint between the first sub-support plate and the second sub-support plate of a display device provided in an embodiment of this disclosure.

[0026] Figure 8 This is a cross-sectional schematic diagram of the joint between the first sub-support plate and the second sub-support plate of a display device provided in an embodiment of this disclosure.

[0027] Figure 9 This is a cross-sectional schematic diagram of an elastic support structure for a display device according to an embodiment of the present disclosure.

[0028] Figure 10 This is a top view schematic diagram of a second sub-support plate of a display device provided in an embodiment of the present disclosure.

[0029] Figure 11 This is a top view schematic diagram of a second sub-support plate of a display device provided in an embodiment of the present disclosure. Detailed Implementation

[0030] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0031] Rollable displays, as a new type of flexible screen, have been widely researched and developed in the display industry. Combining advantages such as large display size and portability, rollable displays are increasingly favored by consumers. Display devices using rollable screens include display and non-display areas and can be unfolded from a retracted state to an unfolded state, making the display area larger than the retracted display area. Therefore, display devices using rollable screens have a larger display area in the unfolded state and a smaller volume in the retracted state. However, during the unfolding process, the flexible display panel can deform due to stress, resulting in localized bulges on the surface, leading to a poor viewing experience. Therefore, improving the relatively low flatness of rollable screens is currently a key research focus.

[0032] To address the issue of low surface flatness in flexible display panels, a retractable support plate is installed on the backlight side of the panel. This retractable support plate supports the flexible display panel, thus improving its flatness. However, the retractable support plate has poor stability, is prone to vertical misalignment, and has height differences between different parts of the retractable component.

[0033] In view of this, the present disclosure provides a support assembly and a display device including the support assembly. The support assembly includes a support plate and an elastic support structure. The display device includes a flexible display panel and a support assembly, the support assembly being used to support the flexible display panel. The support plate is disposed on the backlight side of the flexible display panel to support the flexible display panel, and includes a first sub-support plate and a second sub-support plate. The second sub-support plate is configured to slide relative to the first sub-support plate along the unfolding direction of the flexible display panel. The elastic support structure is disposed on the side of the support plate opposite to the flexible display panel, corresponding to the joint between the first sub-support plate and the second sub-support plate. By providing the elastic support structure on the side of the support plate opposite to the display panel, the joint between the first sub-support plate and the second sub-support plate in the support plate can be supported, avoiding any step difference at the joint between the first sub-support plate and the second sub-support plate, thereby improving the surface flatness of the flexible display panel and improving the visual experience for users when using a rollable screen.

[0034] The specific structure of the display device in at least one embodiment of this disclosure will now be described with reference to the accompanying drawings. In these drawings, a spatial rectangular coordinate system is established with the surface of the flexible display panel as a reference to illustrate the position of each structure in the display device. In this spatial rectangular coordinate system, the X-axis and Y-axis are parallel to the surface of the display panel, the Z-axis is perpendicular to the surface of the display panel, and the positive direction of the Z-axis is the light emission direction of the display panel.

[0035] In the following figures, the display device 100 is illustrated as an example of a smartphone. However, this disclosure is not intended to limit the specific type of the display device 100. Optionally, the display device 100 can also be any of various types of computer system devices that are mobile or portable and perform wireless communication. In some cases, the display device 100 can perform multiple functions (e.g., playing music, displaying video, storing pictures, and receiving and sending telephone calls). Specifically, the display device 100 can be a portable gaming device, a laptop computer, a PDA, a portable internet device, a music player, and a data storage device.

[0036] It should be noted that this disclosure also provides a support component. For ease of understanding, the specific structure of the support component will be described along with the specific structure of the display device.

[0037] Figure 1 This is a top view schematic diagram of a display device in a retracted state according to an embodiment of the present disclosure. Figure 2 This is a top view of a display device in an unfolded state, according to an embodiment of the present disclosure. Figure 3 For along Figure 1 A schematic diagram of the cross-sectional structure of line AA in the diagram. Figure 4 It is along Figure 2 A schematic diagram of the cross-sectional structure of the BB line. (See diagram below.) Figure 1-Figure 4 As shown, the display device includes a flexible display panel 110 and a support assembly. The support assembly includes a support plate 120 and an elastic support structure 130, and the support assembly has an extended state and a retracted state.

[0038] like Figure 2 and Figure 3 As shown, the display device 100 includes a display area 102 and a non-display area 101, and the flexible display panel 110 can extend along the unfolding direction to increase the area of ​​the display area 102 of the display device 100. Specifically, in an optional embodiment, refer to... Figure 2 The positive direction of the X-axis is from left to right, and the negative direction is from right to left. Figure 2 Taking the display device 100 shown as an example, the unfolding direction of the flexible display panel 110 is the negative direction of the X-axis.

[0039] Optionally, the flexible display panel 110 can be an organic light-emitting diode (OLED) display panel. Specifically, the flexible display panel 110 includes a flexible substrate and a plurality of organic light-emitting diodes (OLEDs) disposed on the flexible substrate, with at least one OLED constituting a sub-pixel of the flexible display panel 110. An organic light-emitting diode is a device that generates electroluminescence using a multilayer organic thin-film structure. 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, it may also include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, and an electron transport layer. Under the influence of an electric field, holes generated in the anode layer and electrons generated in the cathode layer migrate to the light-emitting layer. 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 ultimately produce visible light.

[0040] A support plate 120 is disposed on the backlight side of the flexible display panel 110 to support the flexible display panel 110, and includes a first sub-support plate 121 and a second sub-support plate 122. The second sub-support plate 122 is configured to slide relative to the first sub-support plate 121 along a first direction, so that the support assembly switches between the unfolded state and the retracted state. Herein, the first direction refers to the unfolding direction or the retracting direction of the flexible display panel 110.

[0041] In one alternative implementation, such as Figure 3 As shown, when the support assembly is in the retracted state, the second sub-support plate 122 is located on the side opposite to the support surface of the first sub-support plate 121. Figure 4 As shown, when the support assembly is in the deployed state, both 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 in contact with the flexible display panel 110. Figure 5 As shown, when the support assembly is in a semi-expanded state, the joint between the second sub-support plate 122 and the first sub-support plate 121 is an inclined surface. The second sub-support plate 122 and the first sub-support plate 121 are in contact at the inclined surface of the joint. The side of the second sub-support plate 122 facing the flexible display panel 110 is separated from the flexible display panel 110.

[0042] The mating point between 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 unfolding direction (that is, the side of the first sub-support plate 121 facing the negative X-axis direction) is the mating point between the second sub-support plate 122 and the first sub-support plate 121.

[0043] Specifically, the support assembly also includes a middle frame 150, and the first sub-support plate 121 can be fixedly connected to a portion of the middle frame 150. The middle frame 150 may include a portion that extends and retracts along the unfolding direction of the flexible display panel 110, so as to drive the second sub-support plate 122 to slide relative 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 made of metal or plastic.

[0044] like Figure 6 As shown, the middle frame 150 includes a main body 151 and a telescopic portion 152 that can retract back and forth relative to the main body 151. The side wall of the main body 151 parallel to the X-axis and the side wall of the telescopic portion 152 parallel to the X-axis are slidably connected. The surface of the first sub-support plate 121 facing the middle frame 150 can be fixedly connected to the upper surface of the main body 151. The second sub-support plate 122 can be slidably connected or elastically connected to the side wall of the telescopic portion 152. For example, during the process of the support assembly moving from a retracted state to an extended state, the second sub-support plate 122 will move upward relative to the telescopic portion; during the process of the support assembly moving from an extended state to a retracted state, the second sub-support plate 122 will move downward relative to the telescopic portion.

[0045] The display device 100 also includes a scroll 140, around which a portion of the flexible display panel 110 is wound. The side of the middle frame 150 closest to the scroll 140 is directly or indirectly connected to the scroll 140, and the portion of the middle frame 150 connected to the second sub-support plate 122 moves as the scroll 140 moves. Specifically, the telescopic portion 152 is directly or indirectly connected to the scroll 140 and moves in the unfolding direction of the flexible display panel 110 as the scroll 140 moves.

[0046] Optionally, the middle frame 150 can also be other structures, as long as it can support the support plate 120 and extend and retract along the unfolding direction of the display device. For example, the side wall of the telescopic part parallel to the X-axis can be a structure formed by multiple hinges, the bottom surface of the main body can have a hollow design, and the main body and the telescopic part can be connected by hinges or guide rails or other connecting parts. The embodiments disclosed herein are not intended to limit the specific structure of the middle frame.

[0047] Figure 7-Figure 8 A schematic cross-sectional view of the joint between the first sub-support plate 121 and the second sub-support plate 122, provided for at least one embodiment of this disclosure. (See attached image.) Figure 7 and Figure 8 As shown, when the flexible display panel is in the unfolded state, the first sub-support plate includes a first end face 1211 facing the second sub-support plate, and the second sub-support plate includes a second end face 1221 facing the first sub-support plate. The shapes of the first end face 1211 and the second end face 1221 are matched, and the second end face 1221 is located on the side of the first end face 1211 that faces away from the flexible display panel. When the flexible display panel is in the unfolded state, the second sub-support plate 122 is below the first sub-support plate 111. The first sub-support plate 111 is fixed, so the first sub-support plate 121 serves to limit the second sub-support plate 122 in the Z-axis direction. This ensures 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.

[0048] The first sub-support plate 121 can limit the second sub-support plate 122 through the cooperation of the second end face 1221 and the first end face 1211, preventing the upper surface of the second sub-support plate 122 from being higher than the first sub-support plate 121. This avoids a height difference between the first and second sub-support plates 121 and prevents a height difference when they are connected. In addition, the cooperation of the second end face 1221 and the first end face 1211 ensures that there is no gap when they are mated, thus achieving a better support effect for the flexible display panel.

[0049] Optionally, such as Figure 3 and Figure 4 The first end face 1211 is an inclined surface, and the second end face 1221 is an inclined surface that mates with the first end face 1211. An inclined surface is a surface that is neither parallel nor perpendicular to the light-emitting surface of the flexible display panel; that is, the angle between the first end face 1211 and the light-emitting surface of the flexible display panel is an acute or obtuse angle. For example... Figure 7 As shown, the first end face 1211 is a combination of an inclined surface and two surfaces perpendicular to the flexible display panel. Figure 8 As shown, the first end face 1211 is stepped. It should be noted that the first end face 1211 and the second end face 1221 can also be other shapes. For example, the first end face 1211 and the second end face 1221 can each be composed of multiple surfaces with different slopes. Optionally, the first end face 1211 and the second end face 1221 can also be arcs. This disclosure is not intended to limit the specific shapes of the first end face 1211 and the second end face 1221.

[0050] The first end face 1211 and the second end face 1221 are not simply planes perpendicular to the Z-axis direction. This disclosure increases the contact area of ​​the first sub-support plate 121 and the second sub-support plate 122 in the unfolded state by setting the second end face 1221 and the first end face 1211 with matching shapes. This method can ensure the stability of the connection between the first sub-support plate 121 and the second sub-support plate 122.

[0051] like Figure 3 As shown, the elastic support structure 130 is disposed on the side of the support plate 120 opposite to the flexible display panel 110. When the flexible display panel is in the unfolded state, the elastic support structure 130 is located at the joint of the first sub-support plate 121 and the second sub-support plate 122. The elastic support structure 130 being located at the joint of the first sub-support plate 121 and the second sub-support plate 122 means that the orthographic projection of the elastic support structure 130 on the flexible display panel 110 and the orthographic projection of the joint of the first sub-support plate 121 and the second sub-support plate 122 (i.e., the first end face 1211) on the flexible display panel 110 at least partially overlap. For example, the orthographic projection of the elastic support structure 130 on the support plate 120 is within the orthographic projection of the joint of the first sub-support plate 121 and the second sub-support plate 122 on the flexible display panel 110, or the orthographic projection of the elastic support structure 130 on the support plate 120 covers the orthographic projection of the joint of the first sub-support plate 121 and the second sub-support plate 122 on the flexible display panel 110. Specifically, one end of the elastic support structure 130 facing away from the display side of the flexible display panel 110 can 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.

[0052] The elastic support structure 130 can generate large elastic deformation under load, converting 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, simultaneously converting the deformation energy back into mechanical work or kinetic energy. Optionally, such as Figure 3 and Figure 4 As shown, the elastic support structure 130 may include a spring 131, for example, a compression spring. Compression springs are simple to manufacture, reliable, inexpensive, and have a long service life. In one embodiment, the compression spring may be a tower spring, which is small in size, has a large load capacity, can withstand greater pressure, and stores more energy.

[0053] 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 of the support assembly opposite to the support surface of the second sub-support plate 122 when the support assembly is in the retracted state. For example, in one embodiment, multiple elastic support structures 130 are provided, and multiple guide rails (not shown) corresponding to the elastic support structures 130 are provided on the side of the second sub-support plate 122 away from the flexible display panel 110, along the unfolding direction of the flexible display panel 110, so that the multiple elastic support structures 130 slide in the guide rails as the flexible display panel 110 unfolds. Specifically, the multiple elastic support structures 130 are arranged sequentially at intervals along the Y-axis direction. This method can provide a relatively uniform support force at the joint to ensure the flatness of the support plate 120. The second sub-support plate 122 is provided with multiple guide rails along the unfolding direction of the flexible display panel 110 on the side opposite to the first sub-support plate 121. That is, the multiple guide rails are arranged along the X-axis, and the multiple guide rails correspond one-to-one with the multiple elastic support structures 130, so as to avoid the elastic support structures 130 from moving in the Y-axis direction and affecting the support effect.

[0054] Optionally, the deformation of spring 131 decreases as the flexible display panel 110 unfolds. Specifically, when 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 retracted state of the display device 100, and the distance between the second sub-support plate 122 and the bottom surface 1511 of the main body 151 is larger in the unfolded state of the display device 100. Therefore, the deformation of spring 131 under compression decreases as the display device 100 unfolds.

[0055] The deformation of spring 131 can be adjusted according to the model of spring 131. A suitable spring 131 can be selected according to the design requirements of display device 100 to ensure that the display device 100 provides a supporting force towards the light emission direction of flexible display panel 110 when the display device 100 is unfolded. This method can prevent the second sub-support plate 122 from being lower than the sub-support plate 120.

[0056] In one embodiment of this disclosure, the elastic support structure 130 further includes a rotating support structure 132 connected to the second sub-support plate 122, and a spring 131 is disposed between the top 1322 and the bottom 1321 of the rotating support structure 132; wherein, when the flexible display panel 110 is retracted from the unfolded state to the retracted state, the rotating support structure 132 rotates to compress the spring 131.

[0057] like Figure 9As shown, the rotating support structure 132 includes a bottom 1321, a top 1322, a rotating shaft 1324, and a connector 1323 rotatably connected to the bottom 1321 via the rotating shaft 1324. A spring 131 is disposed between the top 1322 and the bottom 1321. When the top 1322 is subjected to changes in pressure, the rotating shaft 1324 rotates to change the distance between the top 1322 and the bottom 1321, thereby compressing the spring and causing deformation. The bottom surface of the rotating support structure 132 is fixedly connected to the bottom surface 1511 of the main body 151, which increases the contact area between the elastic support structure 130 and the bottom surface 1511 of the main body 151. This structure makes the connection between the elastic support structure 130 and the middle frame 150 more stable. Simultaneously, the spring 131, located within the rotating support structure 132, limits the direction of the spring 131 along the Z-axis, serving a guiding function to prevent damage to the spring 131.

[0058] Optionally, the elastic support structure 130 may also be composed of leaf springs or other elastic elements. 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 may be adaptively adjusted according to the needs of use.

[0059] 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 be bonded to the flexible display panel 110 with an adhesive.

[0060] To improve the adhesion between the second sub-support plate 122 and the flexible display panel 110 when the support assembly is in the deployed state, and to ensure the flatness of the flexible display panel 110, in at least one optional embodiment of this disclosure, the second sub-support plate 122 and the flexible display panel 110 are fixed relative to each other by magnetic attraction. Specifically, the flexible display panel 110 comprises a 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 that cooperates with and is attracted and fixed to the flexible display panel 110. 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 spaced apart. Figure 10 and Figure 11 As shown, multiple magnetic structures 160 can be embedded in the second sub-support plate 122. The multiple magnetic structures 160 can be evenly distributed, for example, in an array. Providing multiple evenly distributed magnetic structures 160 on the surface of the second sub-support plate 122 ensures that the second sub-support plate 122 adheres to the flexible display panel 110 at various positions on the display side of the surface facing the display device 100.

[0061] like Figure 10 and Figure 11As shown, the magnetic structure 160 can be rectangular, circular, elliptical, or other shapes. Optionally, in at least one embodiment provided in this disclosure, the entire surface of the second sub-support plate 122 can be configured as a magnetic structure 160 to achieve a better adsorption effect.

[0062] Optionally, the magnetic structure 160 can be a magnetic coating, which can be applied to form a full-surface magnetic structure on the surface of the second sub-support plate 122, or a magnetic structure including multiple patterns. Using a magnetic coating material for the magnetic structure 160 makes it easier to process and improves its flexibility. Optionally, the magnetic structure 160 can be made of magnets, such as neodymium iron boron magnets, ferrite magnets, AlNiCo magnets, etc. When the magnetic structure 160 is made of magnets, it can be fixed to the surface of the second sub-support plate by embedding. The magnetic structure 160 can also be an electromagnet, which generates magnetism when energized and loses magnetism when de-energized. When the support assembly is in the extended state, energizing the electromagnet generates magnetism to attract the flexible display panel 110; when the support assembly is in the retracted state, de-energizing the electromagnet separates the second sub-support plate 122 and the flexible display panel 110.

[0063] This embodiment of the present disclosure provides an elastic support structure 130 at the bottom 1321 of the second sub-support plate 122. When the display device 100 is in the unfolded state, the second sub-support plate 122 receives an upward supporting force and fits tightly against the first sub-support plate 121. When the support assembly is in the retracted state, the elastic support structure 130 is compressed downwards, ensuring the storage of the support plate 120. Simultaneously, a limiting structure is provided at the joint between 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 exceeding that of the first sub-support plate 121 when the display device 100 is in the unfolded state. Therefore, the display device 100 in this disclosure has excellent flatness in the unfolded state, which can improve the problem of insufficient flatness of the flexible display panel 110 surface, thereby avoiding unpleasant visual experiences for users.

[0064] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Any modifications or equivalent substitutions made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A display device, characterized in that, include: Flexible display panel; A support assembly for supporting the flexible display panel, having an unfolded state and a retracted state, the support assembly comprising: A support plate, including a first sub-support plate and a second sub-support plate, the second sub-support plate being configured to slide relative to the first sub-support plate along a first direction to allow the support assembly to switch between the deployed state and the retracted state; and An 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; The middle frame includes a main body and a telescopic part that is retractable relative to the main body. The main body includes a bottom surface located on the side of the support plate opposite to the support surface of the support plate. The elastic support structure is disposed between the support plate and the bottom surface, and one end of the elastic support structure facing the bottom surface is fixedly connected to the bottom surface. A scroll, the flexible display panel portion is wound around the scroll, the telescopic part is directly or indirectly connected to the scroll and moves with the movement of the scroll, the second sub-support plate is connected to the telescopic part and slides relative to the first sub-support plate as the telescopic part moves; The elastic support structure includes a spring, the deformation of which decreases as the support assembly unfolds. The elastic support structure also includes a rotating support structure connected to the second sub-support plate. The rotating support structure includes a top, a bottom, a pivot, and a connector. The bottom is fixedly connected to the bottom surface of the main body. One end of the connector is rotatably connected to the bottom via the pivot, and the other end of the connector is connected to the top. The spring is disposed between the top and bottom of the rotating support structure. Specifically, when the support assembly retracts from the extended state to the retracted state, it can drive the rotating shaft to rotate, thereby changing the distance between the top and the bottom to compress the spring. When the support assembly is in the deployed state, the first end face of the first sub-support plate facing the second sub-support plate and the second end face of the second sub-support plate facing the first sub-support plate overlap at the joint of the first sub-support plate and the second sub-support plate, and the second end face is located on the side of the first end face away from the flexible display panel. The elastic support structure is supported at the joint 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 support surface of the second sub-support plate are flush.

2. The display device according to claim 1, characterized in that, When the support assembly is in the retracted state, the second sub-support plate is located on the side opposite to the support surface of the first sub-support plate.

3. The display device according to claim 1, characterized in that, At least one of the elastic support structures is provided at the joint of the support plates. The support assembly, in the retracted state, has at least one guide rail on the side opposite to the support surface of the second sub-support plate, so that the elastic support structure slides in the guide rail as the second sub-support plate unfolds.

4. The display device according to claim 1, characterized in that, The shapes of the first end face and the second end face are matched.

5. The display device according to claim 4, characterized in that, The first end face is a slope or a step, and the second end face is a slope or a step that matches the first end face.

6. A display device according to claim 1, characterized in that, 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 for adsorption and fixation.

Images