Display module and display device

Abstract

This disclosure provides a display module, i.e., a display device. The display module includes a display panel and a first support member. The display panel includes a first straight portion, a second straight portion, a third straight portion, a first bent portion, and a second bent portion connected to each other. The first bent portion is disposed between the first straight portion and the second straight portion, and the second bent portion is disposed between the second straight portion and the third straight portion. The first support member is located on the backlight side of the display panel. The first support member includes a first support portion, the orthographic projection of which is located on the first straight portion of the display panel. At least one first cutout area is provided on the first support portion. In this display module, the first support portion has a first cutout area, and the orthographic projection of which is located on the first straight portion of the display panel. This can reduce or block the transmission of film layer misalignment when the first bent portion is bent, thereby improving the problem of anti-arching in the second bent portion.

Description

Technical Field

[0001] This disclosure relates to the field of display panel technology, and more particularly to a display module and display device. Background Technology

[0002] Flexible display panels have special product forms such as folding, large-angle bending, and rolling, which leads to their increasing applications.

[0003] For example, foldable display panels offer a larger display area when unfolded and a smaller storage volume when folded, making them easy to carry and thus attracting widespread attention. However, display panels are prone to arching and bulging when folded. Summary of the Invention

[0004] In view of this, the purpose of this disclosure is to provide a display module and display device that can solve at least one of the above-mentioned technical problems.

[0005] For the purposes described above, the first aspect of this disclosure discloses a display module, which includes:

[0006] The display panel includes a first straight portion, a second straight portion, a third straight portion, a first bent portion, and a second bent portion connected together. The first bent portion is disposed between the first straight portion and the second straight portion, and the second bent portion is disposed between the first straight portion and the third straight portion.

[0007] A first support member is located on the backlight side of the display panel. The first support member includes a first support portion. The orthographic projection of the first support portion on the display panel is located on a first flat portion of the display panel. A first cutout area is provided on the first support portion.

[0008] In one embodiment, the first straight portion includes a first sub-straight portion and a second sub-straight portion symmetrically arranged along a first center line, wherein the first center line is the center line of the first straight portion perpendicular to the extension direction of the display panel;

[0009] The first hollow area includes a first sub-hollow area and a second sub-hollow area. The first sub-hollow area is located on the side of the first center line near the first bend, and the second sub-hollow area is located on the side of the first center line near the second bend.

[0010] Preferably, the first hollow area is provided with a plurality of first through holes, and the plurality of first through holes are arranged in a matrix.

[0011] Preferably, the first through hole penetrates the first support portion.

[0012] In one embodiment, the distance between the first sub-cutout area and the second sub-cutout area is zero, and the projected area of ​​the second sub-cutout area on the display panel is greater than the projected area of ​​the first sub-cutout area on the display panel.

[0013] Preferably, the projected area of ​​the second sub-cutout area on the display panel is greater than 35% of the projected area of ​​the second sub-flat portion on the display panel;

[0014] Preferably, the ratio of the projected area of ​​the second sub-cutout area on the display panel to the projected area of ​​the second sub-flat portion on the display panel is greater than 0.35 and less than 1.

[0015] In one embodiment, the first sub-cutout area and the second sub-cutout area are spaced apart, and the projected area of ​​the second sub-cutout area on the display panel is equal to the projected area of ​​the first sub-cutout area on the display panel.

[0016] In one embodiment, the first support member further includes a second support portion, a third support portion, a fourth support portion, and a fifth support portion.

[0017] The orthographic projection of the second support portion onto the display panel is located at the second flat portion.

[0018] The orthographic projection of the third support portion on the display panel is located at the first bending portion. The third support portion is provided with a second hollow area, and the second hollow area is provided with a plurality of second through holes, which are arranged in a dot matrix.

[0019] The orthographic projection of the fourth support portion on the display panel is located at the second bent portion, and the fourth support portion is provided with a third hollow area, and the second hollow area is provided with a third through hole;

[0020] The orthographic projection of the fifth support portion onto the display panel is located at the third straight portion;

[0021] Preferably, the first support member comprises a thin metal sheet.

[0022] In one embodiment, the first bend and the second bend have the same folding direction;

[0023] Preferably, both the first bent portion and the second bent portion are folded toward the light-emitting surface of the first straight portion;

[0024] Preferably, the first bend is folded with a first radius of curvature, and the second bend is folded with a second radius of curvature, wherein the first radius of curvature is smaller than the second radius of curvature.

[0025] A second aspect of this disclosure provides a display device including the display panel described above.

[0026] A third aspect of this disclosure provides a display device, the display device comprising:

[0027] The display panel includes a first straight portion, a second straight portion, a third straight portion, a first bent portion, and a second bent portion connected together. The first bent portion is disposed between the first straight portion and the second straight portion, and the second bent portion is disposed between the first straight portion and the third straight portion.

[0028] A support assembly is located on the backlight side of the display panel, and the support assembly includes a first middle frame located on the backlight side of the third flat portion.

[0029] A tensioning component is disposed on the third straight portion and the first middle frame. The tensioning component is used to generate a tension force in the third straight portion from the second bent portion toward the third straight portion when the first bent portion is folded.

[0030] In one embodiment, the stretching assembly includes a slide roller connected to the first middle frame;

[0031] The display panel further includes a stretching portion, which is located on the side of the third straight portion away from the second bent portion and connected to the third straight portion. The stretching portion is wound around the sliding roller.

[0032] The third straight portion includes a third sub-straight portion and a fourth sub-straight portion, wherein the third sub-straight portion is located on the side of the fourth sub-straight portion away from the stretching portion;

[0033] With the first bent portion of the display panel folded, at least a portion of the third flat portion is wound onto the sliding roller.

[0034] In the unfolded state of the display panel and in the folded state of the second bending portion of the display panel, the third sub-straight portion and the fourth sub-straight portion are located in the same plane.

[0035] In one embodiment, the stretching assembly includes:

[0036] A connecting component is located between the third straight portion and the first middle frame. The connecting component includes a first connecting portion and a second connecting portion arranged side by side along the extension direction of the display panel. The second connecting portion is located on the side of the first connecting portion away from the second bent portion.

[0037] The first connecting part is fixedly connected to the backlight side of the third flat part and slidably connected to the first middle frame; the second connecting part is fixedly connected to the first middle frame.

[0038] An elastic element is located between the first connecting portion and the second connecting portion, and simultaneously connects the first connecting portion and the second connecting portion;

[0039] When the display panel is in the unfolded state and when the second bending portion of the display panel is in the folded state, the elastic element is in a tensioned state;

[0040] Preferably, the side of the first connecting part closest to the display panel is fixedly connected to the third flat part, the side of the first connecting part opposite to the display panel is slidably connected to the first middle frame, and the side of the second connecting part opposite to the display panel is fixedly connected to the first middle frame.

[0041] Preferably, the first middle frame is provided with a groove, the connecting component and the elastic element are both disposed in the groove, and the bottom of the groove is provided with a sliding groove adapted to the first connecting part.

[0042] Compared with the prior art, the display module provided in this disclosure improves the problem of anti-arching in the second bending part by setting a first hollow area on the first support part and the orthographic projection of the first hollow area on the display panel is located in the first straight part. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the bending of the first bend in a display module in the prior art;

[0045] Figure 2 This is a schematic diagram of the display module provided in the embodiments of this application in a flattened state;

[0046] Figure 3 Top view of the display module provided in the embodiments of this application. Figure 1 ;

[0047] Figure 4 Top view of the display module provided in the embodiments of this application. Figure 2 ;

[0048] Figure 5 A schematic diagram of the display device provided in the embodiments of this application in a flattened state. Figure 1 ;

[0049] Figure 6 for Figure 5 Top view of the display device;

[0050] Figure 7 A schematic diagram of the display device provided in the embodiments of this application in a flattened state. Figure 2 ;

[0051] Figure 8 for Figure 7 A top view of the display device. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0053] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in the embodiments of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0054] With the continuous development of display technology, foldable screens have become a future trend in mobile electronic products. Display devices using foldable screens can be freely unfolded and folded, enhancing the user experience. When unfolded, a foldable screen provides a larger display area, improving the display effect. When folded, it is convenient for users to carry.

[0055] However, during the folding process, the internal structural layers of a foldable screen are prone to slippage and displacement, causing some layers to slide to the sides, which in turn leads to film layer compression deformation in the bending area of ​​the screen. For example... Figure 1 As shown, when the first bend B1 of the display panel 1 is folded inward, the second bend B2 of the display panel 10 will exhibit an arching (protrusion) phenomenon. As the angle of inward folding increases, the arching of the second bend B2 becomes more and more obvious. On this basis, when the second bend B2 is bent, there is a high probability of causing the display panel 1 or display module to peel off, which reduces the service life of the display device.

[0056] For the reasons mentioned above, the first aspect of this application provides a display module, which includes a display panel 10 and a first support member 20. The display panel 10 includes a first straight portion A1, a second straight portion A2, a third straight portion A3, a first bent portion B1, and a second bent portion B2 connected to each other. The first bent portion B1 is disposed between the first straight portion A1 and the second straight portion A2, and the second bent portion B2 is disposed between the second straight portion A2 and the third straight portion A3. The first support member 20 is located on the backlight side of the display panel 10. A support member 20 includes a first support portion 21. The first support portion 21 is located on the first straight portion A1 of the display panel 10 in the orthographic projection of the display panel 10. At least one first hollow area 211 is provided on the first support portion 21 of the display module. The first hollow area 211 is provided on the first support portion 21 of the display module, and the orthographic projection of the first hollow area 211 on the display panel 10 is located on the first straight portion A1. When the first bending portion B1 is bent, the film layer misalignment transmission can be reduced or blocked, thereby improving the anti-arching problem of the second bending portion B2.

[0057] Next, combine Figures 2-4 This describes the display module provided in this application.

[0058] In some embodiments, the display module includes a display panel 10, which is a flexible display panel 10. The display panel 10 can be an organic light-emitting diode (OLED) display panel 10, a micro light-emitting diode (Micro LED or μLED) display panel 10, or a liquid crystal display (LCD) display panel 10.

[0059] The display panel 10 may specifically include a driving circuit layer, a light-emitting functional layer, and a cathode layer, etc. The specific film layer structure and light-emitting principle are well known to those skilled in the art and will not be described in detail here. The display panel 10 has a flat portion and a bent portion. The display panel 10 may include one bent portion or at least two bent portions. In this embodiment, the display panel 10 is described as having two bent portions. Specifically, the display panel 10 in this embodiment includes a second flat portion A2, a first bent portion B1, a first flat portion A1, a second bent portion B2, and a third flat portion A3 connected in sequence. When the display module is in a flattened state, the second flat portion A2, the first bent portion B1, the first flat portion A1, the second bent portion B2, and the third flat portion A3 are arranged side by side in sequence. When the display module is in a folded state, the second flat portion A2 and the third flat portion A3 are folded on the same side of the first flat portion A1, but the second flat portion A2 is located between the first flat portion A1 and the third flat portion A3.

[0060] For example, the display panel 10 may include a light-emitting surface and a backlight surface disposed opposite to each other. The light-emitting surface can be used to display images, and the backlight surface is the other side of the display panel 10 disposed opposite to the light-emitting surface.

[0061] In some embodiments, the first bending portion B1 and the second bending portion B2 have the same folding direction. Specifically, both the first bending portion B1 and the second bending portion B2 can be folded toward the light-emitting surface of the first straight portion A1. For example, the first bending portion B1 is folded so that the light-emitting surfaces of the first straight portion A1 and the second straight portion A2 face each other, and the second bending portion B2 is folded so that the light-emitting surface of the third straight portion A3 and the backlight side of the second straight portion A2 face each other. That is, in this embodiment, both the first bending portion B1 and the second bending portion B2 are folded inward.

[0062] Furthermore, the first bending portion B1 is folded with a first radius of curvature, and the second bending portion B2 is folded with a second radius of curvature. The first radius of curvature R1 is smaller than the second radius of curvature. Since the first radius of curvature is smaller than the second radius of curvature R2 in this embodiment, the third straight portion A3 can be disposed on the second straight portion A2 when the display module is in the folded state. For example, when the display module is in the folded state, the first bending portion B1 is folded into a teardrop shape (also called an "R" shape), and the second bending portion B2 is folded into a "U" shape. Since the first radius of curvature R1 of the first bending portion B1 is smaller, the film layer misalignment of the display panel 10 is large after the first bending portion B1 is folded. Therefore, in this embodiment, a first hollow area 211 is provided on the first support portion 21 to reduce or block the transmission of film layer misalignment, thereby reducing the probability and degree of anti-arching.

[0063] refer to Figure 2 In some embodiments, the display module further includes a first support member 20, which is located on the backlight surface of the display panel 10. The first support member 20 is used to support the display panel 10 and prevent the display panel 10 from collapsing when pressed by the user during use, thus affecting the user experience.

[0064] For example, the first support member 20 may be a thin sheet of metal material (e.g., stainless steel plate (SUS)).

[0065] The first support member 20 includes a second support part 22, a third support part 23, a first support part 21, a fourth support part 24, and a fifth support part 25 connected in sequence. When the display module is in a flattened state (e.g., Figure 2As shown, the second support part 22, the third support part 23, the first support part 21, the fourth support part 24 and the fifth support part 25 are arranged side by side in sequence. When the display module is in the folded state, the second support part 22 and the fifth support part 25 are folded on the same side of the first support part 21, but the second support part 22 is located between the first support part 21 and the fifth support part 25.

[0066] The first support portion 21 is projected onto the display panel 10 in the first straight portion A1. The first support portion 21 includes a first hollow area 211. In this embodiment, by providing the first hollow area 211 on the first support portion 21, the slippage transmission of the film layer of the display panel 10 can be effectively reduced or blocked when the first bending portion B1 is folded inward, thereby improving the problem of the reverse arching of the second bending portion B2.

[0067] refer to Figures 2-4 For example, the first straight portion A1 is symmetrically arranged about the first center line f, that is, the first straight portion A1 includes a first sub-straight portion A11 and a second sub-straight portion A12 symmetrically arranged along the first center line f. The first center line f is the center line of the first straight portion A1 in the direction perpendicular to the extension direction (x direction) of the display panel 10. The first hollow area 211 includes a first sub-hollow area 2111 and a second sub-hollow area 2112. The first sub-hollow area 2111 is located on the side of the first center line f near the first bent portion B1, and the second sub-hollow area 2112 is located on the side of the first center line f near the second bent portion B2. In one embodiment, the distance between the first sub-hollow area 2111 and the second sub-hollow area 2112 is zero, which can also be understood as the first sub-hollow area 2111 and the second sub-hollow area 2112 being arranged without distance (e.g. Figure 3As shown in the figure, the first sub-cutout area 2111 and the second sub-cutout area 2112 are integrated as a whole, and the first sub-cutout area 2111 and the second sub-cutout area 2112 are seamlessly connected. The projected area of ​​the first sub-cutout area 2111 on the display panel 10 is larger than the projected area of ​​the second sub-cutout area 2112 on the display panel 10. By setting the first sub-cutout area 2111 and the second sub-cutout area 2112, wherein the projected area of ​​the second sub-cutout area 2112 is larger than the projected area of ​​the first sub-cutout area 2111, the transmission of film layer misalignment can be effectively reduced or blocked, thereby improving the anti-arching problem. Furthermore, the projected area of ​​the second sub-cutout area 2112 on the display panel 10 is greater than 35% of the projected area of ​​the second sub-flat portion A12 on the display panel 10. This can also be understood as the ratio of the projected area of ​​the second sub-cutout area 2112 on the display panel 10 to the projected area of ​​the second sub-flat portion A12 on the display panel 10 being greater than 0.35 and less than 1 (e.g., 0.4, 0.45, 0.5, 0.55, 0.60, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95). In another embodiment, the first sub-cutout area 2111 and the second sub-cutout area 2112 are spaced apart (e.g., ...). Figure 4 As shown, the projected area of ​​the first sub-cutout area 2111 on the display panel 10 is equal to the projected area of ​​the second sub-cutout area 2112 on the display panel 10. When the first bending part B1 is folded, the film layer misalignment of the display panel 10 will be transmitted towards the second bending part B2. In this embodiment, by setting two spaced first sub-cutout areas 2111 and second sub-cutout areas 2112, the entire first support part 21 is not a whole, thereby reducing or blocking the amount of film layer misalignment, and thus reducing the probability and degree of arching.

[0068] refer to Figure 2 In some embodiments, the first hollow area 211 is provided with a plurality of first through holes 212, which are arranged in a dot matrix. Optionally, the first through holes 212 can be rectangular, square, circular, triangular, etc., which are not limited in this application.

[0069] For example, the orthographic projection of the second support portion 22 on the display panel 10 is located at the second flat portion A2, and the second support portion 22 is used to support the second flat portion A2 of the display panel 10.

[0070] For example, the orthographic projection of the third support portion 23 on the display panel 10 is located at the first bending portion B1. The third support portion 23 is used to support the first bending of the display panel 10, and the third support portion 23 can be bent. To further improve the flexibility of the third support portion 23, a second hollow area 231 is provided in the third support portion 23. The second hollow area 231 is provided with a plurality of second through holes 232, which are arranged in a dot matrix and penetrate through the third support portion 23. By providing a plurality of second through holes 232 on the third support portion 23, excessive stress concentration in the third support portion 23 can be avoided, thereby ensuring that the third support portion 23 has better flexibility. In other words, when the display module is unfolded or folded, because the third support portion 23 has better flexibility, the third support portion 23 has less impact on the bending of the display panel 10.

[0071] For example, the orthographic projection of the fourth support portion 24 on the display panel 10 is located at the second bending portion B2. The fourth support portion 24 includes a third hollow area, and the third hollow area is provided with a third through hole 242. By providing multiple third through holes 242 on the fourth support portion 24, excessive stress concentration in the fourth support portion 24 can be avoided, thereby ensuring that the fourth support portion 24 has better flexibility. In other words, when the display module is unfolded or folded, because the fourth support portion 24 has better flexibility, the fourth support portion 24 has less impact on the bending of the display panel 10.

[0072] The exemplary fifth support portion 25 is projected onto the third flat portion A3 on the display panel 10; the fifth support portion 25 is used to support the third flat portion A3 of the display panel 10.

[0073] refer to Figure 2 In one embodiment, the display module further includes a first adhesive layer 30, which is located between the display panel 10 and the first support member 20 and serves to connect the display panel 10 and the first support member 20. For example, the first adhesive layer 30 can be foam adhesive, which can relieve the stress on the display module when it is bent.

[0074] A second aspect of this application provides a display device including the aforementioned display module. This display device can be any product or component with display functionality, such as an OLED panel, mobile phone, tablet computer, monitor, laptop, computer, digital photo frame, or navigator. It should be noted that the above description is merely exemplary, and those skilled in the art can make various modifications and variations to the embodiments of the present invention based on the above description; all such modifications and variations are within the protection scope of the present invention.

[0075] Next, let's combine Figures 5-8To describe the display device provided in the third aspect of this application, the display device includes a display panel 100, a support assembly 200, and a tensioning assembly. The display panel 100 includes a first straight portion A1, a second straight portion A2, a third straight portion A3, a first bent portion B1, and a second bent portion B2 connected to each other. The first bent portion B1 is disposed between the first straight portion A1 and the second straight portion A2, and the second bent portion B2 is disposed between the second straight portion A2 and the third straight portion A3. The support assembly 200 is located on the backlight side of the display panel 100 and includes a first middle frame 210 located on the backlight side of the third straight portion A3. The tensioning assembly is disposed on the third straight portion A3 and the first middle frame 210. The tensioning assembly is used to generate a pulling force in the third straight portion A3 from the second bent portion B2 toward the third straight portion A3 when the first bent portion B1 is folded.

[0076] In some embodiments, the display device includes a display panel 100, which is a flexible display panel 100. The display panel 100 can be an organic light-emitting diode (OLED) display panel 100, a micro light-emitting diode (Micro LED or μLED) display panel 100, or a liquid crystal display (LCD) display panel 100.

[0077] The display panel 100 may specifically include a driving circuit layer, a light-emitting functional layer, and a cathode layer, etc. Its specific film layer structure and light-emitting principle are well known to those skilled in the art and will not be described in detail here. The display panel 100 has a flat portion and a bent portion. The display panel 100 may include one bent portion or at least two bent portions. In this embodiment, the display panel 100 with two bent portions is used as an example. Specifically, the display panel 100 in this embodiment includes a second flat portion A2, a first bent portion B1, a first flat portion A1, a second bent portion B2, and a third flat portion A3 connected in sequence. When the display module is in a flattened state, the second flat portion A2, the first bent portion B1, the first flat portion A1, the second bent portion B2, and the third flat portion A3 are arranged side by side in sequence. When the display module is in a folded state, the second flat portion A2 and the third flat portion A3 are folded to the same side of the first flat portion A1, but the second flat portion A2 is located between the first flat portion A1 and the third flat portion A3.

[0078] For example, the display panel 100 may include a light-emitting surface and a backlight surface disposed opposite to each other. The light-emitting surface can be used to display images, and the backlight surface is the other side of the display panel 100 disposed opposite to the light-emitting surface.

[0079] In some embodiments, the first bending portion B1 and the second bending portion B2 have the same folding direction. Specifically, both the first bending portion B1 and the second bending portion B2 can be folded toward the light-emitting surface of the first straight portion A1. For example, the first bending portion B1 is folded so that the light-emitting surfaces of the first straight portion A1 and the second straight portion A2 face each other, and the second bending portion B2 is folded so that the light-emitting surface of the third straight portion A3 and the backlight side of the second straight portion A2 face each other. That is, in this embodiment, both the first bending portion B1 and the second bending portion B2 are folded inward.

[0080] Furthermore, the first bending portion B1 is folded with a first radius of curvature, and the second bending portion B2 is folded with a second radius of curvature. The first radius of curvature is smaller than the second radius of curvature. Since the first radius of curvature is smaller than the second radius of curvature in this embodiment, the third straight portion A3 can be disposed on the second straight portion A2 when the display module is in the folded state. For example, when the display module is in the folded state, the first bending portion B1 is teardrop-shaped after bending, and the second bending portion B2 is U-shaped after bending. Since the first radius of curvature of the first bending portion B1 is small, the film layer misalignment of the display panel 10 is large after the first bending portion B1 is bent. Therefore, in this embodiment, by setting a stretching component, a force in the same direction as the film layer misalignment is applied to release the film layer misalignment in advance and avoid anti-arching.

[0081] In some embodiments, the support component 200 is located on the backlight side of the display panel 10, and the support component 200 is used to accommodate the display panel 10.

[0082] The support assembly 200 includes a first middle frame 210, a second middle frame 220, a third middle frame 230, a first rotating shaft structure (not shown in the figures), and a second rotating shaft structure (not shown in the figures). The first rotating shaft structure is located between the second middle frame 220 and the third middle frame 230, and the second middle frame 220 and the third middle frame 230 are rotatably connected through the first rotating shaft structure. The second rotating shaft structure is located between the second middle frame 220 and the first middle frame 210, and the second middle frame 220 and the third middle frame 230 are rotatably connected through the second rotating shaft structure. That is, the first rotating shaft structure connects the second middle frame 220 and the third middle frame 230, and the second rotating shaft structure connects the second middle frame 220 and the first middle frame 210. When the display device is in use, the second middle frame 220 and the third middle frame 230 can rotate towards or away from each other under the action of the first rotating shaft mechanism, and the second middle frame 220 and the first middle frame 210 can rotate towards or away from each other under the action of the second rotating shaft mechanism, so that the display device can be closed and opened according to different usage scenarios. In this application, the second middle frame 220 and the third middle frame 230 can rotate towards each other under the action of the first rotating shaft mechanism, and the second middle frame 220 and the first middle frame 210 can rotate towards each other under the action of the second rotating shaft mechanism.

[0083] In some embodiments, a tensioning component is located on the support component 200 and connected to the third straight portion A3 of the display panel 10. The tensioning component is used to generate a tension in the third straight portion A3 from the second bent portion B2 toward the third straight portion A3 when the first bent portion B1 is folded.

[0084] refer to Figures 5-6 In one embodiment, the stretching assembly includes a sliding roller 410 connected to the first middle frame 210; the display panel 10 also includes a stretching part C1 located on the side of the third straight part A3 away from the second bent part B2. The stretching part C1 is wound around the sliding roller 410. The stretching part C1 and the third straight part A3 can be bonded together by an adhesive layer. The main function of the stretching part C1 is to give the third straight part A3 a pre-stretching force under the action of the roller.

[0085] Furthermore, the third straight section A3 includes a third sub-straight section A31 and a fourth sub-straight section A32, wherein the third sub-straight section A31 is located on the side of the fourth sub-straight section away from the stretching section C1. This can also be understood as the fourth sub-straight section A32 being located on the side of the third sub-straight section A31 away from the second bending section B2. When the first bending section B1 of the display panel 10 is folded, at least a portion of the fourth sub-straight section A32 is wound onto the sliding roller 410. When the display panel 10 is in the unfolded state and the second bending section B2 of the display panel 10 is folded, the third sub-straight section A31 and the fourth sub-straight section A32 are located in the same plane. It should be noted that in this embodiment, the fourth sub-straight portion A32 is equivalent to a redundant portion of the third straight portion A3. The length of the fourth sub-straight portion A32 is the redundant length of the third straight portion A3. When the first bending portion B1 of the display panel 10 is folded, under the action of the sliding shaft 410, at least part of the fourth sub-straight portion A32 will be rolled onto the sliding shaft 410, which will play a role in pre-stretching the third straight portion A3, that is, giving the third straight portion A3 a tension in the same direction as the film layer misalignment direction, releasing the film layer misalignment caused by the folded state of the first bending portion B1 in advance, and preventing the second bending portion B2 from arching.

[0086] In one embodiment, the stretching assembly further includes a control switch for controlling the rotation direction of the slide roller 410.

[0087] refer to Figures 7-8In another embodiment, the tensioning assembly includes a connecting component and an elastic member 510. The connecting component is located between the third straight portion A3 and the first middle frame 210, and the connecting component includes a first connecting portion 520 and a second connecting portion 530 arranged side by side along the extension direction (x direction) of the display panel 10. The second connecting portion 530 is located on the side of the first connecting portion 520 away from the second bent portion B2. The first connecting portion 520 is fixedly connected to the backlight side of the third straight portion A3 and slidably connected to the first middle frame 210. The second connecting portion 530 is fixedly connected to the first middle frame 210. The elastic member 510 is located between the first connecting portion 520 and the second connecting portion 530, and simultaneously connects the first connecting portion 520 and the second connecting portion 530. When the display panel 10 is in the unfolded state or the second bent portion B2 is in the bent state, the elastic member 510 is in the tensioned state. Furthermore, the first connecting part 520 is fixedly connected to the third straight part A3 on the side near the display panel 10, and the side of the first connecting part 520 away from the display panel 10 is slidably connected to the first middle frame 210. The side of the second connecting part 530 away from the display panel 10 is fixedly connected to the first middle frame 210. In this embodiment, when the first bending part B1 is folded, the film layer of the display panel 10 will shift, causing the second bending part B2 to exhibit an arching (protrusion) phenomenon. However, since the elastic element 510 is in a tensioned state, the second connecting part 530 will apply a tensile force to the first connecting part 520. The direction of this tensile force is the same as the direction of film layer shift. Therefore, when the first bending part B1 is folded, the second connecting part 530 can drive the first connecting part 520 to move to one side of the second connecting part 530, thereby pulling the second bending part B2 flattened and improving the arching (protrusion) phenomenon of the second bending part B2 in the folded state of the first bending part B1.

[0088] In this embodiment, the elastic element 510 is described as a spring. It should be understood that this application is not limited to this, and the elastic element 510 can also be an elastic block made of a hyperelastic material. The arrangement and position of the elastic element 510 are similar when the elastic element 510 has other structural forms, and will not be described again here.

[0089] In one embodiment, the first middle frame 210 is provided with a groove 211, and the connecting component and the elastic element are both disposed in the groove 211. It can be understood that the connecting component in this embodiment also plays a supporting role, specifically supporting the third straight part. Furthermore, the bottom of the groove 211 is provided with a sliding groove (not shown in the figure) that matches the first connecting part 520. That is, the first connecting part 520 is slidably disposed in the groove 211. When the first bent part B1 is folded, the second connecting part 530 can drive the first connecting part 520 to slide in the sliding groove force, pulling the second bent part B2 flattened, thus improving the anti-arching (protrusion) phenomenon of the second bent part B2 in the folded state of the first bent part B1.

[0090] In one embodiment, the display device further includes a second adhesive layer 300, which is located between the display panel 100 and the support component 200 and serves to connect the display panel 100 and the support component 200.

[0091] It should be noted that the above description describes some embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0092] This disclosure is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A display module, characterized in that, include: The display panel includes a first straight portion, a second straight portion, a third straight portion, a first bent portion, and a second bent portion connected to each other. The first bent portion is disposed between the first straight portion and the second straight portion, and the second bent portion is disposed between the first straight portion and the third straight portion. The first straight portion is symmetrically arranged about a first center line. A first support member is located on the backlight side of the display panel. The first support member includes a first support portion. The orthographic projection of the first support portion on the display panel is located on the first flat portion of the display panel. A first cutout area is provided on the first support portion. The first cutout area includes a first sub-cutout area and a second sub-cutout area. The first sub-cutout area is located on the side of the first center line near the first bend. The second sub-cutout area is located on the side of the first center line near the second bend. The distance between the first sub-cutout area and the second sub-cutout area is zero. The projected area of ​​the second sub-cutout area on the display panel is greater than the projected area of ​​the first sub-cutout area on the display panel.

2. The display module according to claim 1, characterized in that, The first straight portion includes a first sub-straight portion and a second sub-straight portion symmetrically arranged along a first center line, wherein the first center line is the center line of the first straight portion perpendicular to the extension direction of the display panel.

3. The display module according to claim 1, characterized in that, The first hollow area is provided with multiple first through holes, and the multiple first through holes are arranged in a matrix.

4. The display module according to claim 3, characterized in that, The first through hole penetrates the first support portion.

5. The display module according to claim 2, characterized in that, The projected area of ​​the second sub-cutout area on the display panel is greater than 35% of the projected area of ​​the second sub-flat part on the display panel.

6. The display module according to claim 2, characterized in that, The ratio of the projected area of ​​the second sub-cutout area on the display panel to the projected area of ​​the second sub-flat part on the display panel is greater than 0.35 and less than 1.

7. The display module according to claim 1, characterized in that, The first support member also includes a second support portion, a third support portion, a fourth support portion, and a fifth support portion. The orthographic projection of the second support portion onto the display panel is located at the second flat portion. The orthographic projection of the third support portion on the display panel is located at the first bent portion. The third support portion is provided with a second hollow area, and the second hollow area is provided with a plurality of second through holes arranged in a dot matrix. The orthographic projection of the fourth support portion onto the display panel is located at the second bent portion. The fourth support portion is provided with a third hollow area, and the second hollow area is provided with a third through hole. The orthographic projection of the fifth support portion onto the display panel is located at the third straight portion.

8. The display module according to claim 7, characterized in that, The first support member comprises a thin metal sheet.

9. The display module according to claim 1, characterized in that, The first bend and the second bend have the same folding direction.

10. The display module according to claim 9, characterized in that, Both the first bent portion and the second bent portion are folded toward the light-emitting surface of the first straight portion.

11. The display module according to claim 9, characterized in that, The first bend is folded with a first radius of curvature, and the second bend is folded with a second radius of curvature, wherein the first radius of curvature is smaller than the second radius of curvature.

12. A display device, characterized in that, Includes the display module as described in any one of claims 1-11.

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