Display module and display device

Abstract

A display module comprises a display panel, a first supporting layer, a second supporting layer and a bonding layer. The display panel includes a bendable portion. The second supporting layer comprises a plurality of supporting strips arranged at intervals, and a first gap is formed between every two adjacent supporting strips in the multiple supporting strips. The bonding layer comprises a plurality of first parts arranged at intervals and a connecting part, and a second gap is formed between every two adjacent first parts in the first parts; the second gap is communicated with the first gap. And the connecting part is connected with the plurality of first parts, so that the plurality of first parts are connected through the connecting part.

Description

Display module and display device Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] Display devices can display various images through a display screen to provide various information to users. In recent years, flexible display devices developed based on flexible substrates have greatly improved user convenience due to their rollable or bendable properties.

[0003] Summary of the Invention

[0004] On the one hand, a display module is provided. The display module includes a display panel, a first supporting layer, a second supporting layer and an adhesive layer. The display panel includes a bendable portion. The first supporting layer is located on the back side of the display panel, and the back side is the opposite side of the display side of the display panel. The second supporting layer is located on the side of the first supporting layer away from the display panel; the second supporting layer includes a plurality of support bars, and the orthographic projections of the plurality of support bars on the display panel are located on the bendable portion; the plurality of support bars are arranged at intervals, and a first gap exists between two adjacent support bars among the plurality of support bars. The adhesive layer is located between the second supporting layer and the first supporting layer; the adhesive layer includes a plurality of first parts and a connecting part, and the orthographic projections of the plurality of first parts on the display panel are located on the bendable portion; the plurality of first parts are arranged at intervals, and a second gap exists between two adjacent first parts among the plurality of first parts; the second gap is connected to the first gap; and the connecting part connects the plurality of first parts.

[0005] In some embodiments, the multiple support bars and the multiple first parts all extend along a first direction; the first direction is parallel to the first support layer; wherein the orthographic projection of a support bar on the display panel overlaps with the orthographic projection of at least one first part on the display panel.

[0006] In some embodiments, an orthographic projection of the support bar on the display panel is located inside an orthographic projection of the first portion on the display panel.

[0007] In some embodiments, the first portion includes a first end and a second end along the first direction; the connecting portion includes a first connecting portion and a second connecting portion; the first connecting portion connects the first ends of at least two of the first portions, and the second connecting portion connects the second ends of at least two of the first portions.

[0008] In some embodiments, the first connecting part includes multiple first connecting segments; the second connecting part includes multiple second connecting segments; for three adjacent first parts; the first ends of the first two first parts are connected by the first connecting segment, and the second ends of the last two first parts are connected by the second connecting segment.

[0009] In some embodiments, the first connecting segment is located between first ends of two adjacent first parts; and the second connecting segment is located between second ends of two adjacent first parts.

[0010] In some embodiments, the connecting portion includes at least one third connecting segment; wherein, among the multiple first portions, the first ends of two adjacent first portions located on the outermost sides are connected by one of the third connecting segments; and / or, among the multiple first portions, the second ends of two adjacent first portions located on the outermost sides are connected by another of the third connecting segments.

[0011] In some embodiments, the connecting portion further includes a fourth connecting portion; the first portion includes a first end and a second end along the first direction, and a main body portion located between the first end and the second end portion; the fourth connecting portion connects the main bodies of at least two of the first portions.

[0012] In some embodiments, the second direction is perpendicular to the first direction and parallel to the first supporting layer; the fourth connection part includes a plurality of fourth connection groups, and the plurality of fourth connection groups are arranged at intervals along the first direction; at least one fourth connection group includes a plurality of fourth connection segments, and the fourth connection segments in the same fourth connection group are alternately arranged with the first part along the second direction.

[0013] In some embodiments, at least one end surface of the fourth connecting segment along the first direction includes an arcuate surface; and the arcuate surface is concave toward the interior of the fourth connecting segment.

[0014] In some embodiments, one side of the arcuate surface is tangent to one of the two adjacent first portions, and the other side of the arcuate surface is tangent to the other of the two adjacent first portions.

[0015] In some embodiments, the adhesive layer includes a substrate layer, a first adhesive layer, and a second adhesive layer. The first adhesive layer is located on a side of the substrate layer close to the first supporting layer, and the second adhesive layer is located on a side of the substrate layer close to the second supporting layer.

[0016] In some embodiments, the material of the substrate layer includes one or a combination of polyethylene terephthalate, thermoplastic polyurethane elastomer rubber, polyurethane foam, polyethylene foam, and polyvinyl chloride foam.

[0017] In some embodiments, the first portion is integrally formed with the connecting portion.

[0018] In some embodiments, the display panel also includes a planar portion, which is connected to the bendable portion; the second supporting layer also includes a supporting plate, and the orthographic projection of the supporting plate on the display panel is located on the planar portion; the adhesive layer also includes a second part, and the orthographic projection of the second part on the display panel is located on the planar portion.

[0019] In some embodiments, a third gap is provided between an outermost first portion of the plurality of first portions and the second portion.

[0020] In some embodiments, the display module further includes a rotating shaft, which is located on a side of the multiple support bars away from the bendable portion, and the rotating shaft is configured to drive the bendable portion to curl or unfold, and a center line of the rotating shaft is parallel to the first direction.

[0021] In another aspect, a display device is provided, comprising: a display module as described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and are not intended to limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, and the like involved in the embodiments of the present disclosure.

[0023] FIG1 is a structural diagram of a display device according to some embodiments;

[0024] FIG2 is a cross-sectional view of the display module in the display device of FIG1 along the AA section line;

[0025] FIG3 is a structural diagram of a display device in the related art;

[0026] FIG4 is a structural diagram of the display module in FIG2 with the shaft removed;

[0027] FIG5 is a structural diagram of another display module with the hinge removed according to some embodiments;

[0028] FIG6 is a structural diagram of another display module without a rotating shaft according to some embodiments;

[0029] FIG7 is a structural diagram of a first portion of an adhesive layer according to some embodiments;

[0030] FIG8 is a partial enlarged view of the display module at position B in FIG2 ;

[0031] FIG9 is a structural diagram of a first portion and a connecting portion of an adhesive layer according to some embodiments;

[0032] FIG10 is a structural diagram of a first portion and a connecting portion of another adhesive layer according to some embodiments;

[0033] FIG. 11 is a structural diagram of a first portion and a connecting portion of another adhesive layer according to some embodiments. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0035] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0036] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0037] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term "coupled" may be used to indicate that two or more components are in direct physical or electrical contact. However, the term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0038] “At least one of A, B and C” has the same meaning as “at least one of A, B or C” and both include the following combinations of A, B and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C.

[0039] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0040] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0041] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0042] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0043] As used herein, "parallel," "perpendicular," and "equal" include the conditions described and conditions similar to the conditions described, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range for approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range for approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range for approximate equality may be, for example, that the difference between the two equals is less than or equal to 5% of either one.

[0044] It will be understood that when a layer or element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present therebetween.

[0045] Exemplary embodiments are described herein with reference to cross-sectional and / or plan views that are idealized exemplary drawings. In the drawings, the thicknesses of layers and regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are contemplated. Therefore, the exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include deviations in shape due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of regions of the device and are not intended to limit the scope of the exemplary embodiments.

[0046] FIG1 is a structural diagram of a display device according to some embodiments. As shown in FIG1 , the display device 10 is a product having an image display function (including: static images or dynamic images, wherein the dynamic image can be a video). For example, the display device 10 can be any of: a monitor, a television, a billboard, a digital photo frame, a laser printer with a display function, a telephone, a mobile phone, a personal digital assistant (PDA), a digital camera, a portable camcorder, a viewfinder, a navigator, a vehicle, a large-area wall, a home appliance, an information query device (such as a business query device for e-government, banks, hospitals, power departments, etc.), a monitor, etc. The display device 10 includes a display module 100 in any of the following embodiments.

[0047] 2 is a cross-sectional view of the display module 100 along the AA section line in the display device 10 in FIG1 . As shown in FIG2 , the display module 100 includes a display panel 11 , a first supporting layer 12 , an adhesive layer 13 , and a second supporting layer 14 .

[0048] The display panel 11 includes a bendable portion CA1, so that the bendable portion CA1 has a curved shape. The display panel 11 can be an OLED (Organic Light Emitting Diode) display panel, a QLED (Quantum Dot Light Emitting Diode) display panel, or a micro-LED (including MiniLED or MicroLED, where LED is a light-emitting diode) display panel.

[0049] In some embodiments, the display panel 11 further includes a planar portion CA2, which is connected to the bendable portion CA1. The planar portion CA2 is used for planar display; different positions of the bendable portion CA1 can be bent to enable the bendable portion CA1 to be used for sliding display. Furthermore, one side of the display panel 11 is a display side 101, which is used to display images. The opposite side of the display side 101 is the back side 102 of the display panel 11. When the display area of ​​the display panel 11 needs to be increased, part of the bendable portion CA1 can be switched from a bent state to a planar state, so that part of the surface of the bendable portion CA1 is in the same plane as the surface of the planar portion CA2, thereby increasing the screen size of the display panel 11 to meet viewing needs. When the display area of ​​the display panel 11 needs to be reduced, the bendable portion CA1 can be switched from a planar state to a bent state, so that part of the bendable portion CA1 slides to the side of the planar portion CA2, reducing the screen size of the display panel 11 and making the display device 10 more portable.

[0050] In some embodiments, the display panel 11 includes a stacked driving display layer and a protective layer. The driving display layer is used to display images. The protective layer is located on a side of the driving display layer close to the display side 101 and provides isolation and protection.

[0051] The first supporting layer 12 is located on the back side 102 of the display panel 11, which is opposite the display side 101 of the display panel 11. The first supporting layer 12 provides a planarizing effect, which helps reduce the imprinting effect of the second supporting layer 14 and improves the display quality of the display panel 11. In some embodiments, the first supporting layer 12 can be made of metal (e.g., stainless steel, titanium alloy, etc.) or carbon fiber. The thickness of the first supporting layer 12 can range from 20 μm to 500 μm. For example, the thickness of the first supporting layer 12 can be 20 μm, 250 μm, or 500 μm.

[0052] The second support layer 14 is located on the side of the first support layer 12 away from the display panel 11. The second support layer 14 includes a plurality of support bars 141, whose orthographic projections on the display panel 11 are located on the bendable portion CA1. The plurality of support bars 141 are spaced apart, and a first gap 171 is formed between adjacent two of the plurality of support bars 141. For example, the support bars 141 may be made of stainless steel (SUS), titanium alloy, or other easily machined metals. As shown in FIG2 , the plurality of support bars 141 may extend in the same direction. For example, the plurality of support bars 141 may extend in a first direction X parallel to the surface of the first support layer 12. The plurality of support bars 141 are spaced evenly apart, meaning that the plurality of first gaps 171 are equal. This arrangement allows the second support layer 14 to be bent or extended, thereby supporting the bendable portion CA1 and improving the regularity of the second support layer 14.

[0053] In embodiments where the display panel 11 further includes a planar portion CA2, the second support layer 14 may further include a support plate 142. The orthographic projection of the support plate 142 on the display panel 11 is located on the planar portion CA2, so that the support plate 142 supports the planar portion CA2. For example, the support plate 142 is provided on the same layer as the support bar 141, and a gap may be provided between the support plate 142 and the support bar 141. In some embodiments, the material of the support plate 142 may be the same as that of the support bar 141, which will not be further described here.

[0054] In some embodiments, the display module 100 may further include a rotating shaft 19, which is located on a side of the plurality of support bars 141 away from the bendable portion CA1. The rotating shaft 19 is configured to drive the bendable portion CA1 to curl or unfold, and the centerline L of the rotating shaft 19 is parallel to the first direction X. Exemplarily, the rotating shaft 19 is a substantially cylindrical structure, wherein the side of the plurality of support bars 141 away from the bendable portion CA1 contacts the circumferential sidewall of the rotating shaft 19, and the extension direction of the plurality of support bars 141 is parallel to the centerline L of the rotating shaft 19. During actual use, the rotating shaft 19 can rotate about its centerline L, thereby driving the support bars 141 in contact with the rotating shaft 19 to move along the circumferential sidewall of the rotating shaft 19. The moving support bars 141 can drive the bendable portion CA1 to curl or unfold, thereby reducing or increasing the screen size of the display panel 11.

[0055] The adhesive layer 13 is located between the second support layer 14 and the first support layer 12, and the adhesive layer 13 is used to bond the second support layer 14 to the first support layer 12. Figure 3 is a structural diagram of a display device 90 in the related art. As shown in Figure 3, the adhesive layer 92 in the related art can be a whole layer of adhesive material. When the rotating shaft 95 drives the flexible part BB to slide and roll, compression occurs between the support bar 91 and the adhesive layer 92, and a partial area A of the adhesive layer 92 is squeezed and deformed, causing the adhesive layer 92 to peel off from the first support layer 93, further causing the support bar 91 to be misaligned, and the display panel 94 is prone to jamming when sliding and rolling. Here, "area A" is the area in the adhesive layer 92 where the support bar 91 is not attached.

[0056] Based on this, in the display module 100 provided in some embodiments of the present disclosure, the adhesive layer 13 includes a plurality of first portions 131. The orthographic projections of the plurality of first portions 131 on the display panel 11 are located on the bendable portion CA1, so that the plurality of first portions 131 are used to connect the plurality of support bars 141 to the first support layer 12. The plurality of first portions 131 are arranged at intervals, and a second gap 151 is provided between two adjacent first portions 131 in the plurality of first portions 131; the second gap 151 is connected to the first gap 171 to reduce the area of ​​the adhesive layer 13 that is squeezed and deformed by the support bars 141, thereby avoiding squeezing and deformation of the adhesive layer 13, which is beneficial to avoiding peeling between the adhesive layer 13 and the first support layer 12, improving the stability of the support bars 141, and thus avoiding jamming when the display panel 11 is rolled up.

[0057] It is worth noting that, hereinafter, the first direction X is parallel to the first supporting layer 12 and the center line of the rotating shaft 19 , and the second direction Y is perpendicular to the first direction X and parallel to the first supporting layer 12 .

[0058] Figure 4 is a structural diagram of the display module 100 in Figure 2 after removing the hinge 19; Figure 5 is a structural diagram of another display module 100 after removing the hinge according to some embodiments; Figure 6 is a structural diagram of yet another display module 100 after removing the hinge according to some embodiments; Figure 7 is a structural diagram of the first part 131 of the adhesive layer 13 according to some embodiments.

[0059] 4, 5, 6, and 7, in some embodiments, the plurality of first portions 131 and the plurality of support bars 141 extend along the first direction X, which further improves the regularity of the display module 100 and ensures adhesion between the first portions 131 and the support bars 141. The orthographic projection of one support bar 141 on the display panel 11 overlaps with the orthographic projection of at least one first portion 131 on the display panel 11. This arrangement facilitates adhesion between one support bar 141 and at least one first portion 131, thereby ensuring that the second support layer 14 is bonded to the first support layer 12 via the adhesive layer 13.

[0060] In some embodiments, the orthographic projection of a support bar 141 on the display panel 11 is located inside the orthographic projection of a first portion 131 on the display panel 11. For example, as shown in FIG4 , the side surface of a first portion 131 along the second direction Y may extend beyond the side surface of a first support bar 141 along the second direction Y. Alternatively, as shown in FIG5 , the orthographic projection of a support bar 141 on the display panel 11 may completely overlap with the orthographic projection of a first portion 131 on the display panel 11.

[0061] Referring to Figure 6 , in some embodiments, the adhesive layer 13 may include a substrate layer 133, a first adhesive layer 1341, and a second adhesive layer 1342. The first adhesive layer 1341 is located on the side of the substrate layer 133 closest to the first supporting layer 12, and the second adhesive layer 1342 is located on the side of the substrate layer 133 closest to the second supporting layer 14. This arrangement helps ensure the bonding effect of the adhesive layer 13. Furthermore, the provision of the substrate layer 133 further helps planarize the first supporting layer 12, further reduces the stenciling effect of the second supporting layer 14, and further improves the display quality of the display panel 11. For example, the thickness of the adhesive layer 13 may range from 0.015 mm to 0.1 mm.

[0062] In some embodiments, the adhesive layer 13 may further include a first protective layer and a second protective layer, wherein the first protective layer is located on the side of the first adhesive layer 1341 away from the second adhesive layer 1342, and the second protective layer is located on the side of the second adhesive layer 1342 away from the first adhesive layer 1341. The provision of the first protective layer and the second protective layer respectively provides protection for the first adhesive layer 1341 and the second adhesive layer 1342. In a specific application, before the adhesive layer 13 is bonded between the first support layer 12 and the second support layer 14, the first and second protective layers need to be peeled off.

[0063] In some embodiments, the material of the substrate layer 133 may include one or more of polyethylene terephthalate (PET), thermoplastic polyurethane elastomer rubber (TPU), polyurethane foam (PU), polyethylene foam (PE), and polyvinyl chloride foam (PVC) to ensure the bonding effect between the first support layer 12 and the second support layer 14.

[0064] In other embodiments, the adhesive layer 13 can also be a carrier-free adhesive film to ensure effective bonding between the first support layer 12 and the second support layer 14. It is worth noting that a carrier-free adhesive film is also referred to as a pure adhesive film, meaning a film without a carrier. Materials for carrier-free adhesive films include thermoplastic resins such as polyolefins, acrylics, polyvinyl alcohols, polyvinyl acetates, polyesteramines, and polyurethanes; and thermosetting resins such as epoxy resins and phenolic resins.

[0065] Figure 8 is a partial enlarged view of point B in Figure 2 . As shown in Figure 8 , the width D1 of the first portion 131 along the second direction Y can range from 0.5 mm to 3.2 mm. For example, the width D1 of the first portion 131 along the second direction Y can range from 0.5 mm to 3.2 mm. Specifically, the distance D2 between the side surface of the first portion 131 along the second direction Y and the side surface of the first support bar 141 along the second direction Y can range from 0.1 mm to 0.15 mm. For example, the distance D2 between the side surface of the first portion 131 along the second direction Y and the side surface of the first support bar 141 along the second direction Y can range from 0.1 mm to 0.15 mm. Furthermore, the distance H1 of the second gap 151 along the second direction Y can range from 0.3 mm to 1 mm. For example, the distance H1 of the second gap 151 along the second direction Y can range from 0.3 mm to 1 mm. The above arrangement is helpful to ensure the bonding area between the first portion 131 and its corresponding support bar 141 , improve the bonding effect, and further ensure the stability of the support bar 141 , thereby avoiding jamming when the display panel 11 is rolled up.

[0066] Figure 9 illustrates the structure of the first portion 131 and the connecting portion 135 of the adhesive layer 13 according to some embodiments. Referring to Figure 9 , the adhesive layer 13 further includes the connecting portion 135, which connects the multiple first portions 131. The connecting portion 135 allows the multiple first portions 131 to be connected, improving the stability between the multiple first portions 131 and, in turn, the stability between the support bars 141, thereby further preventing jamming when the display panel 11 is rolled up.

[0067] 2 , in an embodiment where the display panel 11 further includes a planar portion CA2, the adhesive layer 13 may further include a second portion 132. The orthographic projection of the second portion 132 on the display panel 11 is located on the planar portion CA2. Exemplarily, the second portion 132 is provided on the same layer as the first portion 131. The provision of the second portion 132 allows the support plate 142 to be bonded to the first supporting layer 12.

[0068] In some embodiments, as shown in Figure 2, a third gap 173 is defined between the outermost first portion 131 and the second portion 132 of the plurality of first portions 131. It is worth noting that when the outermost support bar 141 of the plurality of support bars 141 contacts the rotating shaft 19, the outermost first portion 131 of the plurality of first portions 131 is squeezed. Providing the third gap 173 between the first portion 131 and the second portion 132 helps reduce the localized stress on the outermost first portion 131, thereby preventing misalignment of the outermost support bar 141.

[0069] In summary, the adhesive layer 13 includes multiple first portions 131 and connecting portions 135. The multiple first portions 131 are spaced apart, and a second gap 151 is defined between adjacent first portions 131 within the multiple first portions 131. The second gap 151 is connected to the first gap 171 to reduce the area of ​​the adhesive layer 13 that is deformed by the support bars 141, thereby preventing the adhesive layer 13 from being deformed by compression. This helps prevent peeling between the adhesive layer 13 and the first support layer 12, improves the stability of the support bars 141, and thus prevents jamming of the display panel 11 when it is rolled. The connecting portion 135 connects the multiple first portions 131, thereby connecting the multiple first portions 131 through the connecting portion 135. This helps improve the stability between the multiple first portions 131, and further improves the stability between the support bars 141, thereby further preventing jamming of the display panel 11 when it is rolled.

[0070] It is worth noting that when the elastic modulus of the material of the adhesive layer 13 is large, the rigidity of the adhesive layer 13 is strong and the adhesive layer 13 is not easy to bend. Through the above-mentioned arrangement, the area of ​​the adhesive layer 13 that is squeezed and deformed by the support bar 141 is reduced, which is also conducive to the selection of a material with a large elastic modulus for the adhesive layer 13, thereby expanding the selection range of the material of the adhesive layer 13 and reducing the production cost. By adjusting the material of the adhesive layer 13, the elastic modulus of the adhesive layer 13 can be further adjusted. In some examples, the elastic modulus of the adhesive layer 13 can range from 10KPa to 700MPa. For example, the elastic modulus of the adhesive layer 13 can be 10KPa, 10MPa, 350MPa or 700MPa.

[0071] 9 , the first portion 131 may include a first end portion 181 and a second end portion 182 along the first direction X, and a main body portion 183 located between the first end portion 181 and the second end portion 182. For example, the first end portion 181 may be located at the left end of the first portion 131 in the illustrated position, the second end portion 182 may be located at the right end of the first portion 131 in the illustrated position, and the main body portion 183 may be located between the first end portion 181 and the second end portion 182, and the main body portion 183 may be connected to the first end portion 181 and the second end portion 182, respectively.

[0072] The connecting portion 135 may include a first connecting portion 1351 and a second connecting portion 1353. The first connecting portion 1351 may connect the first ends 181 of at least two first portions 131, and the second connecting portion 1353 may connect the second ends 182 of at least two first portions 131. The first connecting portion 1351 allows for connection between the first ends 181 of at least two first portions 131, while the second connecting portion 1353 allows for connection between the second ends 182 of at least two first portions 131. This improves the stability of the first ends 181 and the second ends 182 of the first portions 131, thereby preventing jamming when the display panel 11 is rolled up.

[0073] As shown in FIG9 , the first connecting portion 1351 may include a plurality of first connecting segments 1371, each of which may be located between the first ends 181 of two adjacent first portions 131. The second connecting portion 1353 may include a plurality of second connecting segments 1373, each of which may be located between the second ends 182 of two adjacent first portions 131. It is worth noting that by adjusting the number of first connecting segments 1371 and second connecting segments 1373, the number of connected first ends 181 and second ends 182 may be controlled.

[0074] As shown in Figure 9, in some embodiments, along the second direction Y, multiple first connecting segments 1371 can be alternately arranged with portions of the first end portions 181 in the multiple first parts 131 to connect the portions of the first end portions 181 in the multiple first parts 131 together; and, along the second direction Y, multiple second connecting segments 1373 can be alternately arranged with portions of the second end portions 182 in the multiple first parts 131 to connect the portions of the second end portions 182 in the multiple first parts 131 together.

[0075] As shown in Figure 9, in some other embodiments, along the second direction Y, multiple first connecting segments 1371 can be alternately arranged with multiple first end portions 181, so that the first end portions 181 of the multiple first parts 131 are all connected together; and along the second direction Y, multiple second connecting segments 1373 can be alternately arranged with multiple second end portions 182, so that the second end portions 182 of the multiple first parts 131 are all connected together, which is beneficial to further increase the bonding area between the adhesive layer 13 and the first supporting layer 12, thereby further improving the bonding effect between the second supporting layer 14 and the first supporting layer 12, and further improving the stability of the first end portion 181 and the second end portion 182 of the first part 131, thereby avoiding jamming when the display panel 11 slides.

[0076] FIG10 is a structural diagram of another adhesive layer 13 including a first portion 131 and a connecting portion 135 according to some embodiments. As shown in FIG10 , in some other embodiments, for three adjacent first portions 131 (e.g., at position M in the figure), the first ends 181 of the first two first portions 131 can be connected by a first connecting segment 1371, and the second ends 182 of the last two first portions 131 can be connected by a second connecting segment 1373, so that multiple first portions 131 can be sequentially connected together, and the multiple first portions 131, the multiple first connecting segments 1371, and the multiple second connecting segments 1373 can form a strip-like structure. It is understood that along the second direction Y, the first portion 131, the first connecting segment 1371, the first portion 131, the second connecting segment 1373, and the first portion 131 are sequentially arranged, alternating in a cycle to form the strip-like structure. The above arrangement facilitates the formation of the plurality of first portions 131 into a whole, thereby improving the stability of the plurality of first portions 131 and further improving the stability of the first end portion 181 and the second end portion 182 of the first portion 131, thereby avoiding jamming when the display panel 11 is rolled up.

[0077] 10 , the connecting portion 135 may further include at least one third connecting segment 1355. The first ends 181 of two adjacent first portions 131 located at the outermost sides (e.g., at N1 in the figure, which may be, for example, the outermost sides away from the planar portion CA2) among the plurality of first portions 131 are connected by one third connecting segment 1355, and / or the second ends 182 of two adjacent first portions 131 located at the outermost sides (e.g., at N2 in the figure, which may be, for example, the outermost sides close to the planar portion CA2) among the plurality of first portions 131 may be connected by another third connecting segment 1355.

[0078] For example, the second ends 182 of two adjacent first portions 131 located at the outermost sides (such as at position N1 in the figure, where position N1 may be, for example, the outermost sides away from the planar portion CA2) are connected by a second connecting segment 1373, so that the third connecting segment 1355 and the second connecting segment 1373 are arranged opposite each other along the first direction X. Among the multiple first portions 131, by providing the third connecting segment 1355 and the second connecting segment 1373 between the two adjacent first portions 131 located at the outermost sides, deformation of the first portions 131 located at the outermost sides is avoided, thereby facilitating the stability of the support bars 141 corresponding to the first portions 131 located at the outermost sides, thereby preventing jamming of the display panel 11 when it is rolled up.

[0079] Similarly, the first ends 181 of two adjacent first portions 131 located at the outermost side (such as at position N2 in the figure, where position N2 may be, for example, the outermost side near the planar portion CA2) are connected by a first connecting segment 1371, such that the third connecting segment 1355 and the first connecting segment 1371 are disposed opposite each other along the first direction X. Among the multiple first portions 131, by providing the third connecting segment 1355 and the first connecting segment 1371 between the two adjacent first portions 131 located at the outermost side, deformation of the other first portion 131 located at the outermost side is prevented, thereby facilitating the stability of the support bar 141 corresponding to the other first portion 131 located at the outermost side, thereby preventing jamming of the display panel 11 during rolling.

[0080] Figure 11 illustrates the structure of a first portion 131 and a connecting portion 135 of another adhesive layer 13, according to some embodiments. Referring to Figure 11 , the connecting portion 135 may further include a fourth connecting portion 1357, which connects the main bodies 183 of at least two first portions 131. The provision of the fourth connecting portion 1357 connects the main bodies 183 of at least two first portions 131, further improving the stability of the main bodies 183 of the first portions 131 and preventing jamming when the display panel 11 is rolled up.

[0081] Continuing with FIG11 , the fourth connection portion 1357 may include a plurality of fourth connection groups 1367 . The plurality of fourth connection groups 1367 may be spaced apart along the first direction X. At least one fourth connection group 1367 includes a plurality of fourth connection segments 1377 . The fourth connection segments 1377 within the same fourth connection group 1367 may be alternately arranged with the first portion 131 along the second direction Y. This allows the main bodies 183 of the plurality of first portions 131 to be connected together, thereby further improving the stability of the main bodies 183 of the first portions 131 and preventing jamming when the display panel 11 is rolled up. Furthermore, the plurality of fourth connection groups 1367 arranged along the first direction X may be spaced apart at equal intervals, which facilitates uniform force distribution across the main bodies 183 of the plurality of first portions 131, further improving the stability of the main bodies 183 of the first portions 131 and preventing jamming when the display panel 11 is rolled up. Illustratively, the fourth connection groups 1367 may be arranged at equal intervals along the first direction, so that the plurality of fourth connection segments 1377 may be distributed in an array, which is beneficial to improving the regularity of the adhesive layer 13 and simplifying the processing technology.

[0082] In some examples, the distance D3 between two adjacent fourth connection groups 1367 along the first direction X ranges from 5 mm to 500 mm. For example, the distance D3 between two adjacent fourth connection segments 1377 along the first direction X can be 5 mm, 250 mm or 500 mm.

[0083] Continuing with FIG11 , at least one end surface of the fourth connecting segment 1377 along the first direction X may further include a curved surface P, which is recessed toward the interior of the fourth connecting segment 1377. Providing the curved surface P reduces local stress between the first portion 131 and the fourth connecting segment 1377, further improving the stability of the main body 183 of the first portion 131, thereby preventing jamming of the display panel 11 during rolling.

[0084] In some embodiments, one side of the arcuate surface P is tangent to one of the two adjacent first portions 131, and the other side of the arcuate surface P is tangent to the other of the two adjacent first portions 131. For example, the arcuate surface P can be a semicircular surface, wherein the side of the arcuate surface P close to the planar portion CA2 is tangent to the first portion 131 of the two adjacent first portions 131 close to the planar portion CA2, and the side of the arcuate surface P away from the planar portion CA2 is tangent to the first portion 131 of the two adjacent first portions 131 away from the planar portion CA2. The diameter of the arcuate surface P is the distance between the two adjacent first portions 131 along the second direction Y, which is also the distance H2 of the first gap 171 along the second direction Y. In some embodiments, the diameter of the arcuate surface P can range from 0.3 mm to 50 mm. For example, the diameter of the arcuate surface P can be 0.3 mm, 25 mm, or 50 mm. The above arrangement is conducive to further reducing the local stress between the first portion 131 and the fourth connecting section 1377 , and further improving the stability of the main body 183 of the first portion 131 .

[0085] In some embodiments, the first ends 181 of multiple first parts 131 can be connected by a first connecting segment 1371, and the second ends 182 of multiple first parts 131 can be connected by a second connecting segment 1373. At the same time, the main bodies 183 of multiple first parts 131 can also be connected by a fourth connecting segment 1377, thereby further improving the stability between the first parts 131.

[0086] It is worth noting that the first part 131 and the connecting part 135 can be integrally formed, that is, the first part 131 and the connecting part 135 are arranged on the same layer and are formed by the same process. Exemplarily, the entire surface of the adhesive material can be formed first, and then a circular knife mold is used to remove part of the adhesive material to form the first part 131 and the connecting part 135. It is worth noting that by removing part of the adhesive material, a first gap 171 can also be formed. The first part 131 and the connecting part 135 are formed by the same process, which is conducive to ensuring the connection strength between the first part 131 and the connecting part 135, and then ensuring the stability of the adhesive layer 13 and the stability of the metal strip, thereby avoiding jamming when the display panel 11 slides. In some embodiments, the second part 132, the first part 131 and the connecting part 13 are arranged on the same layer and are formed by the same process, which will not be repeated here.

[0087] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display module, comprising: A display panel including a bendable portion; a first supporting layer, located on the back side of the display panel, where the back side is opposite to the display side of the display panel; a second supporting layer, located on a side of the first supporting layer away from the display panel; the second supporting layer comprises a plurality of supporting bars, wherein the orthographic projections of the plurality of supporting bars on the display panel are located on the bendable portion; The plurality of support bars are arranged at intervals, and a first gap exists between two adjacent support bars among the plurality of support bars; as well as, an adhesive layer located between the second supporting layer and the first supporting layer; the adhesive layer comprises: a plurality of first portions, wherein the orthographic projections of the plurality of first portions on the display panel are located on the bendable portion; the plurality of first portions are arranged at intervals, and a second gap is formed between two adjacent first portions in the plurality of first portions; the second gap is connected to the first gap; and, The connecting portion connects the plurality of first portions.

2. The display module according to claim 1, wherein: The plurality of support bars and the plurality of first portions extend along a first direction; the first direction is parallel to the first support layer; The orthographic projection of a support bar on the display panel overlaps with the orthographic projection of at least one first portion on the display panel.

3. The display module according to claim 2, wherein: An orthographic projection of the supporting bar on the display panel is located inside an orthographic projection of the first portion on the display panel.

4. The display module according to claim 3, wherein: The first portion includes a first end and a second end along the first direction; The connecting portion includes a first connecting portion and a second connecting portion; the first connecting portion connects first ends of at least two of the first portions, and the second connecting portion connects second ends of at least two of the first portions.

5. The display module according to claim 4, wherein: The first connecting portion includes a plurality of first connecting segments; the second connecting portion includes a plurality of second connecting segments; For three adjacent first parts, the first ends of the first two first parts are connected by a first connecting segment, and the second ends of the last two first parts are connected by a second connecting segment.

6. The display module according to claim 5, wherein: The first connecting section is located between the first ends of two adjacent first parts; and the second connecting section is located between the second ends of two adjacent first parts.

7. The display module according to claim 5 or 6, wherein: The connecting portion includes at least one third connecting segment; Among them, the first ends of the two adjacent first parts located at the outermost side of the multiple first parts are connected by one of the third connecting segments; and / or, the second ends of the two adjacent first parts located at the outermost side of the multiple first parts are connected by another of the third connecting segments.

8. The display module according to any one of claims 2 to 7, wherein: The connecting portion further includes a fourth connecting portion; The first portion includes a first end portion and a second end portion along the first direction, and a main body portion located between the first end portion and the second end portion; The fourth connecting portion connects at least two main bodies of the first portions.

9. The display module according to claim 8, wherein: The second direction is perpendicular to the first direction and parallel to the first supporting layer; The fourth connection part includes multiple fourth connection groups, and the multiple fourth connection groups are arranged at intervals along the first direction; at least one fourth connection group includes multiple fourth connection segments, and the fourth connection segments in the same fourth connection group are alternately arranged with the first part along the second direction.

10. The display module according to claim 9, wherein: At least one end surface of the fourth connecting segment along the first direction includes an arcuate surface; the arcuate surface is recessed toward the interior of the fourth connecting segment.

11. The display module according to claim 10, wherein: One side of the arcuate surface is tangent to one of the two adjacent first portions, and the other side of the arcuate surface is tangent to the other of the two adjacent first portions.

12. The display module according to any one of claims 2 to 11, wherein: The adhesive layer includes a base material layer, a first adhesive layer, and a second adhesive layer. The first adhesive layer is located on a side of the base material layer close to the first supporting layer, and the second adhesive layer is located on a side of the base material layer close to the second supporting layer.

13. The display module according to claim 12, wherein: The material of the substrate layer includes one or a combination of polyethylene terephthalate, thermoplastic polyurethane elastomer rubber, polyurethane foam, polyethylene foam, and polyvinyl chloride foam.

14. The display module according to any one of claims 2 to 13, wherein: The first portion and the connecting portion are integrally formed.

15. The display module according to any one of claims 2 to 14, wherein: The display panel further includes a planar portion, the planar portion being in contact with the bendable portion; The second supporting layer further includes a supporting plate, wherein the orthographic projection of the supporting plate on the display panel is located on the plane portion; The adhesive layer further includes a second portion, and an orthographic projection of the second portion on the display panel is located on the plane portion.

16. The display module according to claim 15, wherein: A third gap is defined between the outermost first portion of the plurality of first portions and the second portion.

17. The display module according to any one of claims 2 to 16, wherein: Also includes: A rotating shaft is located on a side of the plurality of support bars away from the bendable portion, the rotating shaft is configured to drive the bendable portion to curl or unfold, and a center line of the rotating shaft is parallel to the first direction.

18. A display device comprising: The display module according to any one of claims 1 to 17.

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