Supporting assembly, display module and preparation method of display module

Abstract

The invention relates to a supporting assembly, a display module and a preparation method of the display module. The supporting assembly comprises a supporting plate, an exhaust through hole is formed in the supporting plate, and the supporting plate is used for being bonded with a supporting film arranged on the non-display side of the display panel through a bonding layer; the display panel comprises a supporting plate and a first protective film, the first protective film is arranged on the side, back on to the display panel, of the supporting plate, the first protective film comprises a deformable layer and at least one protective layer, the deformable layer is arranged on the side, close to the supporting plate, of the protective layer, and the elastic modulus of the deformable layer is smaller than that of the protective layer. When the bubbles move to the deformable layer through the exhaust through holes under the action of pressure, the deformable layer of the first protective film is easy to deform under the extrusion action of the bubbles, so that the risk that the bubbles extrude the adhesive layer to cause swelling of the adhesive layer is reduced.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a support component, a display module and a preparation method thereof. Background Art

[0002] With the development of display technology, foldable display devices are becoming more and more popular. In the process of bonding the support film and the support plate of the foldable display device through the adhesive layer, bubbles are easily generated between the support film and the support plate.

[0003] In the related art, when the bubbles are removed by pressurized degassing, the bubbles are difficult to remove and easily cause bulging in the adhesive layer, affecting the product yield. Summary of the invention

[0004] Based on this, it is necessary to provide a support assembly, a display module and a preparation method thereof, which can reduce the risk of bubbles squeezing the adhesive layer and causing bulging of the adhesive layer by removing bubbles between the support film and the support plate by pressurized degassing.

[0005] In a first aspect, an embodiment of the present application provides a support assembly, the support assembly comprising:

[0006] A support plate, the support plate being provided with an exhaust through hole, the support plate being used to be bonded to a support film disposed on a non-display side of the display panel through an adhesive layer; and,

[0007] A first protective film, wherein the first protective film is disposed on a side of the support plate facing away from the display panel, the first protective film comprises a deformable layer and at least one protective layer, the deformable layer is disposed on a side of the protective layer close to the support plate, and an elastic modulus of the deformable layer is smaller than an elastic modulus of the protective layer.

[0008] In one embodiment, the support plate includes a first support area, a second support area, and a connection area connected between the first support area and the second support area;

[0009] The first supporting area covers the first non-bending area of ​​the display panel, the second supporting area covers the second non-bending area of ​​the display panel, and the connecting area covers the bending area of ​​the display panel;

[0010] The exhaust through hole is arranged in the connection area.

[0011] In one embodiment, the deformable layer is provided with an exhaust groove connected to the exhaust through hole; the exhaust groove penetrates the end surface of at least one end of the first protective film along the first direction; the first direction, the second direction, and the third direction intersect each other, the second direction is along the penetration direction of the exhaust through hole, and the third direction is the direction in which the first supporting area, the connecting area, and the second supporting area are arranged in sequence when the display panel is in the unfolded state;

[0012] Optionally, the exhaust groove extends in the first direction;

[0013] Optionally, the exhaust groove passes through end surfaces of both ends of the first protection film along the first direction.

[0014] In one embodiment, the exhaust groove is a groove that is recessed inward from a side of the deformable layer facing the support plate.

[0015] In one embodiment, the number of the exhaust grooves is multiple, and the multiple exhaust grooves are arranged at intervals along the third direction;

[0016] Optionally, the deformable layer is provided with a plurality of weakened holes, the plurality of weakened holes are arranged in a plurality of weakened hole columns arranged along the third direction, and each of the weakened hole columns comprises a plurality of the weakened holes sequentially spaced apart along the first direction;

[0017] Optionally, the weakened hole array is provided between two adjacent exhaust grooves, and the weakened hole array is provided between any two adjacent exhaust grooves.

[0018] In one embodiment, the deformable layer is provided with a plurality of weakened holes;

[0019] Optionally, the weakened hole is a through hole or a blind hole;

[0020] Optionally, a projection of the contour of the weakened hole along a second direction toward the support plate falls on the connection area, and the second direction is along a penetrating direction of the exhaust through hole;

[0021] Optionally, the plurality of weakened holes are arranged into a plurality of weakened hole columns arranged along a third direction, each of the weakened hole columns includes a plurality of weakened holes arranged in sequence along a first direction, the first direction, the second direction, and the third direction intersect with each other, the second direction is along the penetrating direction of the exhaust through hole, and the third direction is the direction in which the first support area, the connection area, and the second support area are arranged in sequence when the display panel is in the unfolded state.

[0022] In one embodiment, the number of the protective layers is multiple, and the deformable layer is located on a side of all the protective layers close to the support plate;

[0023] Optionally, any two adjacent protective layers are bonded;

[0024] Optionally, the deformable layer is bonded to the adjacent protective layer.

[0025] In one embodiment, the elastic modulus of the deformable layer is greater than or equal to 10 MPa and less than or equal to 80 MPa; the elastic modulus of the protective layer is greater than or equal to 4 GPa and less than or equal to 8 GPa;

[0026] Optionally, the deformable layer is made of PU (polyurethane), and the protective layer is made of PET (polyethylene terephthalate);

[0027] Optionally, the thickness of the deformable layer is greater than or equal to 0.05 mm and less than or equal to 0.1 mm.

[0028] In a second aspect, an embodiment of the present application further provides a display module, including:

[0029] Display panel;

[0030] A supporting film is arranged on the non-display side of the display panel;

[0031] The support assembly described in any of the above embodiments.

[0032] In a third aspect, an embodiment of the present application further provides a method for preparing a display module, comprising the following steps:

[0033] Providing a display panel, wherein a supporting film is disposed on a non-display side of the display panel;

[0034] Bonding the support plate of the support assembly described in any one of the above embodiments to the support film through an adhesive layer;

[0035] The bubbles between the support film and the support plate are removed by pressurized degassing.

[0036] The above-mentioned support assembly, display module and preparation method thereof, since the deformable layer is arranged on the side of the protective layer close to the support plate, and the support plate is provided with an exhaust hole, when the bubbles between the support film and the support plate are removed by pressurized degassing, the bubbles move to the deformable layer through the exhaust hole under the action of pressure. Since the elastic modulus of the deformable layer is less than the elastic modulus of the protective layer, the rigidity of the deformable layer is small, which reduces the overall rigidity of the first protective film. In this way, when the bubbles move to the deformable layer through the exhaust hole under the action of pressure, the deformable layer of the first protective film is easily deformed under the extrusion of the bubbles, thereby reducing the risk of the adhesive layer bulging caused by the bubbles squeezing the adhesive layer. At the same time, since the elastic modulus of the protective layer is larger than that of the deformable layer, the protective layer of the first protective film still has a relatively high rigidity, which can provide better protection for the display module as a whole. When it is necessary to further process or assemble the display module, the first protective film can be peeled off from the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 FIG. 4 is a schematic cross-sectional view of a display module according to an embodiment of the present invention.

[0038] Figure 2 Schematic diagram of the structure of a first protective film according to an embodiment.

[0039] Figure 3 The figure is a schematic structural diagram of a support plate according to an embodiment.

[0040] Figure 4 FIG. 4 is a schematic structural diagram of a deformable layer according to an embodiment of the present invention.

[0041] Figure 5 for Figure 4 A schematic cross-sectional view of the deformable layer is shown.

[0042] Figure Number:

[0043] YY', first direction; XX', third direction; ZZ', second direction;

[0044] 100, support plate; 101, exhaust through hole; 110, first support area; 120, second support area; 130, connection area;

[0045] 200, first protective film; 210, deformable layer; 211, exhaust groove; 212, weakened hole; 220, protective layer; 221, adhesive layer;

[0046] 300. Display panel;

[0047] 400, support film;

[0048] 500, adhesive layer;

[0049] 600, polarizer;

[0050] 700, cover plate;

[0051] 800. Second protective film. DETAILED DESCRIPTION

[0052] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0053] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0054] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0056] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0058] With the development of display technology, foldable display devices are becoming increasingly popular. The foldable display device includes a display panel, a support film and a support plate. The support film is provided on the non-display side of the display panel. The side of the support film facing away from the display panel is bonded to the support plate through an adhesive layer. In order to provide temporary protection for the foldable display device, a first protective film is also provided on the side of the support plate facing away from the support film.

[0059] During the bonding process between the support film and the support plate through the adhesive layer, bubbles are easily generated between the support film and the support plate. In the related art, when the bubbles are removed by pressurized degassing, the bubbles are difficult to remove and are easy to move to the adhesive layer, thereby causing bulges in the adhesive layer and affecting the product yield.

[0060] The inventors have found that the main reason for this phenomenon is that in order to provide a better protection effect, the first protective film needs to have a certain rigidity. However, this results in the first protective film not being easily deformed when the bubbles move through the support plate to the interface of the first protective film, so that the bubbles can only move to the side of the support plate close to the adhesive layer, thereby causing bulges in the adhesive layer and affecting the product yield.

[0061] Based on the research on the above problems, the embodiments of the present application provide a support assembly, a display module and a preparation method thereof. When the bubbles between the support film 400 and the support plate 100 are removed by pressurized degassing, the bubbles move to the deformable layer 210 through the exhaust holes 101 provided on the support plate 100 under the action of pressure. Since the elastic modulus of the deformable layer 210 is smaller than that of the protective layer 220, the deformable layer 210 of the first protective film 200 is easily deformed under the squeezing action of the bubbles, thereby reducing the risk of bubbles squeezing the adhesive layer 500 and causing the adhesive layer 500 to bulge.

[0062] First, see Figure 1 , an embodiment of the present application provides a support assembly. The support assembly includes a support plate 100 and a first protective film 200. The support assembly is applied to a display module. The display module includes a display panel 300 and a support film 400, and the support film 400 is arranged on the non-display side of the display panel 300, and is used to support and buffer the display panel 300, thereby reducing the risk of damage to the non-display side of the display panel 300. When the support assembly is actually applied to the display module, the support plate 100 and the support film 400 are bonded by an adhesive layer 500, thereby further supporting and protecting the non-display side of the display panel 300. The first protective film 200 is arranged on the side of the support plate 100 facing away from the display panel 300, and is used to provide temporary protection for the display module, reducing the risk of damage to the display module. When it is necessary to further perform other processing or assembly on the display module, the first protective film 200 can be peeled off. For example, when it is necessary to set other film layers (such as a water and oxygen barrier layer) on the side of the support plate 100 facing away from the display panel 300, the first protective film 200 can be peeled off. When the display module needs to be assembled into a housing to form a display device (such as a mobile phone, a tablet computer, etc.), the first protective film 200 can be peeled off.

[0063] Continue reading Figure 1 The support plate 100 is provided with an exhaust hole 101. The first protective film 200 includes a deformable layer 210 and at least one protective layer 220. The deformable layer 210 is provided on a side of the protective layer 220 close to the support plate 100. The elastic modulus of the deformable layer 210 is smaller than that of the protective layer 220.

[0064] In the above-mentioned support assembly, since the deformable layer 210 is arranged on the side of the protective layer 220 close to the support plate 100, and the support plate 100 is provided with an exhaust hole 101, when the bubbles between the support film 400 and the support plate 100 are removed by pressurized degassing, the bubbles move to the deformable layer 210 through the exhaust hole 101 under the action of pressure. Since the elastic modulus of the deformable layer 210 is smaller than the elastic modulus of the protective layer 220, the rigidity of the deformable layer 210 is small, thereby reducing the overall rigidity of the first protective film 200. In this way, when the bubbles move to the deformable layer 210 through the exhaust hole 101 under the action of pressure, the deformable layer 210 of the first protective film 200 is easily deformed under the squeezing action of the bubbles, thereby reducing the risk of bubbles squeezing the adhesive layer 500 and causing the adhesive layer 500 to bulge. At the same time, since the elastic modulus of the protective layer 220 is larger than that of the deformable layer 210, the protective layer 220 of the first protective film 200 still has relatively high rigidity and can provide better protection for the display module as a whole. When the display module needs to be further processed or assembled, the first protective film 200 can be peeled off from the support plate 100.

[0065] Optionally, the material used for the deformable layer 210 is PU (polyurethane).

[0066] In other embodiments, the deformable layer 210 may also be made of other materials such as PE (polyethylene) or PP (polypropylene).

[0067] Optionally, the material used for the protective layer 220 is PET (polyethylene terephthalate), and the protective layer 220 may also be made of other materials.

[0068] Optionally, the material used for the support plate 100 is any one of titanium alloy, stainless steel, carbon fiber, and ultra-thin flexible glass.

[0069] Optionally, the adhesive layer 500 is made of OCA optical adhesive.

[0070] See also Figure 2 In one embodiment, a glue layer 221 is provided on a side of the deformable layer 210 facing the support plate 100 , and the deformable layer 210 is bonded to the support plate 100 through the glue layer 221 .

[0071] See also Figure 2 In one embodiment, the number of the protective layers 220 is multiple layers, and the deformable layer 210 is located on a side of all the protective layers 220 close to the support plate 100 .

[0072] By providing a plurality of protective layers 220 in the first protective film 200 , the overall rigidity of the first protective film 200 can be ensured, thereby providing better protection for the display module as a whole.

[0073] Optionally, any two adjacent protective layers 220 are bonded. The deformable layer 210 is bonded to the adjacent protective layers 220. Figure 2 Each protective layer 220 is provided with an adhesive layer 221 on one side facing the deformable layer 210. Any two adjacent protective layers 220 are bonded by the adhesive layer 221 therebetween. The deformable layer 210 and the adjacent protective layers 220 are bonded by the adhesive layer 221 therebetween.

[0074] In other embodiments, the number of the protection layer may also be one layer.

[0075] In one embodiment, the thickness of the first protection film 200 is greater than or equal to 350 μm and less than or equal to 400 μm.

[0076] In one embodiment, the thickness of the deformable layer 210 is greater than or equal to 0.05 mm and less than or equal to 0.1 mm.

[0077] In one embodiment, the elastic modulus of the deformable layer 210 is greater than or equal to 10 MPa and less than or equal to 80 MPa.

[0078] In one embodiment, the elastic modulus of the protection layer 220 is greater than or equal to 4 GPa and less than or equal to 8 GPa.

[0079] In one embodiment, the number of the protection layers 220 is greater than or equal to 4 layers and less than or equal to 7 layers.

[0080] Please refer to Figure 3 In one embodiment, the support plate 100 includes a first support area 110 , a second support area 120 , and a connection area 130 connected between the first support area 110 and the second support area 120 .

[0081] The display panel 300 is a foldable display panel, which includes a first non-bending area, a second non-bending area, and a bending area connected between the first non-bending area and the second non-bending area. The first non-bending area and the second non-bending area can be relatively folded or unfolded by bending the bending area.

[0082] The first supporting area 110 covers the first non-bending area of ​​the display panel 300 and is used to support the first non-bending area. The second supporting area 120 covers the second non-bending area of ​​the display panel 300 and is used to support the second non-bending area. The connecting area 130 covers the bending area of ​​the display panel 300. When the bending area of ​​the display panel 300 is bent, the connecting area 130 is bent along with the bending of the bending area.

[0083] In this embodiment, the exhaust through hole 101 is provided in the connection area 130. Thus, the exhaust through hole 101 can, on the one hand, allow bubbles to move from the support plate 100 to the deformable layer 210 of the first protective film 200, and on the other hand, the exhaust through hole 101 is provided in the connection area 130, which can improve the bendability of the connection area 130 and release the stress of the connection area 130 when it is bent.

[0084] In order to facilitate the description of the technical solution of the present application, the first direction YY', the second direction ZZ', and the third direction XX' are used to describe the orientation, wherein the first direction YY', the second direction ZZ', and the third direction XX' intersect each other. Optionally, the first direction YY', the second direction ZZ', and the third direction XX' are perpendicular to each other.

[0085] like Figure 4 As shown, in one embodiment, the third direction XX' is the direction in which the first support area 110, the connection area 130, and the second support area 120 are arranged in sequence when the display panel 300 is in the unfolded state. The number of exhaust through holes 101 is multiple. The multiple exhaust through holes 101 are arranged in multiple columns of exhaust through holes 101 spaced apart along the third direction XX'. Each column of exhaust through holes 101 includes multiple exhaust through holes 101 spaced apart along the first direction YY'. In this way, bubbles can be quickly moved to the deformable layer 210 through the multiple exhaust through holes 101, and the connection area 130 can have better bending performance.

[0086] Please combine Figure 1 , Figure 4 and Figure 5 In one embodiment, the deformable layer 210 is provided with an exhaust groove 211 connected to the exhaust through hole 101. The exhaust groove 211 penetrates the end surface of at least one end of the first protective film 200 along the first direction YY'. The second direction ZZ' is along the penetration direction of the exhaust through hole 101. The third direction XX' is the direction in which the first support area 110, the connection area 130, and the second support area 120 are arranged in sequence when the display panel 300 is in the unfolded state.

[0087] Since the exhaust groove 211 is connected to the exhaust through hole 101, bubbles can enter the exhaust groove 211 when they move to the deformable layer 210 through the exhaust through hole 101. Since the exhaust groove 211 penetrates the end surface of at least one end of the first protective film 200 along the first direction YY', the bubbles entering the exhaust groove 211 can be discharged from the end surface of at least one end of the first protective film 200 along the first direction YY', so that the bubbles can be removed more effectively.

[0088] like Figure 4As shown, optionally, the exhaust groove 211 penetrates the end surfaces of both ends of the first protective film 200 along the first direction YY'. In this way, the bubbles entering the exhaust groove 211 can be discharged from both ends of the first protective film 200 along the first direction YY', thereby making the exhaust of the bubbles smoother and facilitating the rapid and effective removal of the bubbles.

[0089] like Figure 4 As shown, optionally, the extension direction of the exhaust groove 211 is along the first direction YY'. The extension direction of the exhaust groove 211 is along the first direction YY', so that the position of the exhaust groove 211 corresponds to the connection area 130, so that the exhaust groove 211 can be connected with more exhaust through holes 101, so that bubbles can quickly enter the exhaust groove 211 from the exhaust through holes 101 and be discharged from the exhaust groove 211.

[0090] In other embodiments, the exhaust groove 211 may extend in other directions, for example, slightly inclined to the first direction YY′.

[0091] like Figure 4 As shown, optionally, the exhaust groove 211 is a groove that is recessed inward from the side of the deformable layer 210 facing the support plate 100. It can be understood that the recessed direction of the exhaust groove 211 is along the second direction ZZ'.

[0092] Since the exhaust groove 211 is a groove, the bottom of the exhaust groove 211 does not penetrate the deformable layer 210. In this way, the deformable layer 210 can be kept as a whole (not broken at the exhaust groove 211), thereby facilitating the connection between the deformable layer 210 and the protective layer 220, and facilitating the connection between the deformable layer 210 and the support plate 100.

[0093] Please combine Figure 1 , Figure 4 and Figure 5 In one embodiment, there are multiple exhaust grooves 211, and the multiple exhaust grooves 211 are arranged at intervals along the third direction XX'.

[0094] By providing a plurality of exhaust grooves 211 , the plurality of exhaust grooves 211 can respectively allow bubbles to be discharged, so that the bubbles can be removed more conveniently and quickly.

[0095] Please combine Figure 1 , Figure 4 and Figure 5 In one embodiment, the deformable layer 210 is provided with a plurality of weakened holes 212 .

[0096] By providing the weakened hole 212, the rigidity of the deformable layer 210 can be weakened, so that the deformable layer 210 is more easily deformed under the squeezing action of the bubble, thereby further reducing the risk of the bubble bulging in the adhesive layer 500. The weakened hole 212 can be a through hole or a blind hole.

[0097] In one embodiment, the projection of the contour of the weakened hole 212 along the second direction ZZ′ toward the support plate 100 falls on the connection area 130 , and the second direction ZZ′ is along the penetrating direction of the exhaust through hole 101 .

[0098] In this embodiment, the position of the weakened hole 212 corresponds to the connection area 130, so that the area on the deformable layer 210 corresponding to the connection area 130 can be more easily deformed. In this way, when the air bubble moves to the deformable layer 210 through the exhaust hole 101 at the connection area 130, the deformable layer 210 is more easily deformed under the weakening effect of the weakened hole 212, thereby further reducing the risk of air bubble bulging on the adhesive layer 500.

[0099] Please refer to Figure 4 In one embodiment, the plurality of weakened holes 212 are arranged in a plurality of weakened hole columns arranged along the third direction XX', and each weakened hole column includes a plurality of weakened holes 212 sequentially arranged at intervals along the first direction YY'. The second direction ZZ' is along the penetrating direction of the exhaust through hole 101, and the third direction XX' is the direction in which the first support area 110, the connection area 130, and the second support area 120 are sequentially arranged when the display panel 300 is in the unfolded state.

[0100] By providing multiple rows of weakened holes, the deformable layer 210 is more easily deformed due to the weakening of the multiple rows of weakened holes, thereby further reducing the risk of bubbles bulging in the adhesive layer 500.

[0101] like Figure 4 As shown, optionally, the weakened hole row is arranged between two adjacent exhaust slots 211. A weakened hole row is arranged between any two adjacent exhaust slots 211.

[0102] In this way, the distribution of the weakened hole arrays and the exhaust grooves 211 can be made more uniform, thereby facilitating the rapid removal of bubbles.

[0103] In one embodiment, the thickness of the adhesive layer 500 is greater than or equal to 10 μm and less than or equal to 20 μm.

[0104] In one embodiment, the thickness of the support plate 100 is greater than or equal to 120 μm and less than or equal to 200 μm.

[0105] Please refer to Figure 3 In one embodiment, a dimension a of the support plate 100 along the first direction YY′ is greater than or equal to 50 mm and less than or equal to 200 mm.

[0106] Please refer to Figure 3 In one embodiment, a dimension b of the connection area 130 along the third direction XX′ is greater than or equal to 4.5 mm and less than or equal to 10 mm.

[0107] In one embodiment, the number of the exhaust grooves 211 is [b / 2], that is, a maximum integer less than or equal to b / 2, where b is in mm. The spacing between the central axes of any two adjacent exhaust grooves 211 along the third direction XX' is b / 5. The central axis of the exhaust groove 211 refers to the central axis along the first direction YY'.

[0108] In this way, as many exhaust grooves 211 as possible can be arranged in the area on the deformable layer 210 corresponding to the connection area 130 .

[0109] Please refer to Figure 4 In one embodiment, the width c of the exhaust groove 211 along the third direction XX′ is greater than or equal to 0.2 mm and less than or equal to 0.5 mm.

[0110] Please refer to Figure 5 In one embodiment, the recessed depth d of the exhaust groove 211 is greater than or equal to T / 2 and less than or equal to 2T / 3, where T is the thickness of the deformable layer 210 .

[0111] Please refer to Figure 4 In one embodiment, the weakened hole 212 is circular or polygonal in shape. The radius e of the weakened hole 212 or the radius of its circumscribed circle is greater than or equal to 0.1 mm and less than or equal to 0.3 mm.

[0112] Please refer to Figure 4 In one embodiment, the distance f between the centers of any two adjacent weakened holes 212 along the first direction YY' is greater than or equal to 20 mm and less than or equal to 40 mm.

[0113] In one embodiment, the number of the weakened holes 212 in each weakened hole row is greater than or equal to 6 and less than or equal to 10.

[0114] Please refer to Figure 4 In one embodiment, the shortest distance g between any two adjacent weakened holes 212 along the first direction YY' is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

[0115] Please refer to Figure 1 In a second aspect, an embodiment of the present application further provides a display module, the display module comprising: a display panel 300, a support film 400 and any one of the support components in the embodiment of the first aspect.

[0116] In the above-mentioned display module, since the deformable layer 210 is arranged on the side of the protective layer 220 close to the support plate 100, and the support plate 100 is provided with an exhaust hole 101, when the bubbles between the support film 400 and the support plate 100 are removed by pressurized degassing, the bubbles move to the deformable layer 210 through the exhaust hole 101 under the action of pressure. Since the elastic modulus of the deformable layer 210 is smaller than the elastic modulus of the protective layer 220, the rigidity of the deformable layer 210 is small, thereby reducing the overall rigidity of the first protective film 200. In this way, when the bubbles move to the deformable layer 210 through the exhaust hole 101 under the action of pressure, the deformable layer 210 of the first protective film 200 is easily deformed under the squeezing action of the bubbles, thereby reducing the risk of bubbles squeezing the adhesive layer 500 and causing the adhesive layer 500 to bulge. At the same time, since the elastic modulus of the protective layer 220 is larger than that of the deformable layer 210, the protective layer 220 of the first protective film 200 still has relatively high rigidity and can provide better protection for the display module as a whole. When the display module needs to be further processed or assembled, the first protective film 200 can be peeled off from the support plate 100.

[0117] Please refer to Figure 1 In one embodiment, the display module further includes a polarizer 600 and a cover plate 700 , and the polarizer 600 is disposed between the display side of the display panel 300 and the cover plate 700 .

[0118] In one embodiment, the display module further includes a second protective film 800, which is disposed on a side of the cover plate 700 away from the display panel 300 to provide temporary protection for the display module. When the display module needs to be further processed or assembled, the second protective film 800 can be peeled off.

[0119] In a third aspect, an embodiment of the present application further provides a method for preparing a display module, comprising the following steps:

[0120] S100 : providing a display panel 300 , and a supporting film 400 is disposed on a non-display side of the display panel 300 .

[0121] S200: Bonding the support plate 100 and the support film 400 of any one of the support assemblies in the first aspect of the embodiment via the adhesive layer 500.

[0122] S300: removing bubbles between the support film 400 and the support plate 100 by means of pressure degassing.

[0123] In the above-mentioned method for preparing the display module, since the deformable layer 210 is arranged on the side of the protective layer 220 close to the support plate 100, and the support plate 100 is provided with an exhaust hole 101, when the bubbles between the support film 400 and the support plate 100 are removed by pressurized degassing, the bubbles move to the deformable layer 210 through the exhaust hole 101 under the action of pressure. Since the elastic modulus of the deformable layer 210 is smaller than the elastic modulus of the protective layer 220, the rigidity of the deformable layer 210 is small, thereby reducing the overall rigidity of the first protective film 200. In this way, when the bubbles move to the deformable layer 210 through the exhaust hole 101 under the action of pressure, the deformable layer 210 of the first protective film 200 is easily deformed under the squeezing action of the bubbles, thereby reducing the risk of bubbles squeezing the adhesive layer 500 and causing the adhesive layer 500 to bulge. At the same time, since the elastic modulus of the protective layer 220 is larger than that of the deformable layer 210, the protective layer 220 of the first protective film 200 still has relatively high rigidity and can provide better protection for the display module as a whole. When the display module needs to be further processed or assembled, the first protective film 200 can be peeled off from the support plate 100.

[0124] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0125] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A support assembly, characterized in that: The support assembly comprises: A support plate, the support plate being provided with an exhaust through hole, the support plate being used to be bonded to a support film disposed on a non-display side of the display panel through an adhesive layer; and, A first protective film, wherein the first protective film is disposed on a side of the support plate facing away from the display panel, the first protective film comprises a deformable layer and at least one protective layer, the deformable layer is disposed on a side of the protective layer close to the support plate, and an elastic modulus of the deformable layer is smaller than an elastic modulus of the protective layer.

2. The support assembly according to claim 1, characterized in that: The support plate includes a first support area, a second support area, and a connection area connected between the first support area and the second support area; The first supporting area covers the first non-bending area of ​​the display panel, the second supporting area covers the second non-bending area of ​​the display panel, and the connecting area covers the bending area of ​​the display panel; The exhaust through hole is arranged in the connection area.

3. The support assembly according to claim 2, characterized in that: The deformable layer is provided with an exhaust groove connected to the exhaust through hole; the exhaust groove penetrates the end surface of at least one end of the first protective film along the first direction; the first direction, the second direction, and the third direction intersect each other, the second direction is along the penetration direction of the exhaust through hole, and the third direction is the direction in which the first supporting area, the connecting area, and the second supporting area are arranged in sequence when the display panel is in the unfolded state; Optionally, the exhaust groove extends in the first direction; Optionally, the exhaust groove passes through end surfaces of both ends of the first protection film along the first direction.

4. The support assembly according to claim 3, characterized in that: The exhaust groove is a groove that is recessed inward from a side of the deformable layer facing the support plate.

5. The support assembly according to claim 3, characterized in that: There are multiple exhaust grooves, and the multiple exhaust grooves are arranged at intervals along the third direction; Optionally, the deformable layer is provided with a plurality of weakened holes, the plurality of weakened holes are arranged in a plurality of weakened hole columns arranged along the third direction, and each of the weakened hole columns comprises a plurality of the weakened holes sequentially spaced apart along the first direction; Optionally, the weakened hole array is provided between two adjacent exhaust grooves, and the weakened hole array is provided between any two adjacent exhaust grooves.

6. The support assembly according to claim 2, characterized in that: The deformable layer is provided with a plurality of weakened holes; Optionally, the weakened hole is a through hole or a blind hole; Optionally, a projection of the contour of the weakened hole along a second direction toward the support plate falls on the connection area, and the second direction is along a penetrating direction of the exhaust through hole; Optionally, the plurality of weakened holes are arranged into a plurality of weakened hole columns arranged along a third direction, each of the weakened hole columns includes a plurality of weakened holes arranged in sequence along a first direction, the first direction, the second direction, and the third direction intersect with each other, the second direction is along the penetrating direction of the exhaust through hole, and the third direction is the direction in which the first support area, the connection area, and the second support area are arranged in sequence when the display panel is in the unfolded state.

7. The support assembly according to claim 1, characterized in that: The number of the protective layers is multiple, and the deformable layer is located on a side of all the protective layers close to the support plate; Optionally, any two adjacent protective layers are bonded; Optionally, the deformable layer is bonded to the adjacent protective layer.

8. The support assembly according to claim 1, characterized in that: The elastic modulus of the deformable layer is greater than or equal to 10 MPa and less than or equal to 80 MPa; the elastic modulus of the protective layer is greater than or equal to 4 GPa and less than or equal to 8 GPa; Optionally, the deformable layer is made of PU (polyurethane), and the protective layer is made of PET (polyethylene terephthalate); Optionally, the thickness of the deformable layer is greater than or equal to 0.05 mm and less than or equal to 0.1 mm.

9. A display module, characterized in that: include: Display panel; A supporting film is arranged on the non-display side of the display panel; and The support assembly according to any one of claims 1 to 8.

10. A method for preparing a display module, characterized in that: The following steps are involved: Providing a display panel, wherein a supporting film is disposed on a non-display side of the display panel; Bonding the support plate of the support assembly according to any one of claims 1 to 8 to the support film through an adhesive layer; The bubbles between the support film and the support plate are removed by pressurized degassing.

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