Display module, preparation method thereof and display device

Abstract

The invention discloses a display module, a preparation method thereof and a display device. The display module comprises a polaroid, a first wrapping layer and a second wrapping layer, the first wrapping layer and the polaroid are arranged in a stacked mode, and the first wrapping layer is located on one side of the polaroid. A first sealing structure which is in a concave-convex shape along the extension direction perpendicular to the polaroid is arranged on the surface, which is located at the edge of the polaroid, exceeds the polaroid and is close to the polaroid, of the first wrapping layer; the second wrapping layer and the polaroid are arranged in a stacked mode, and the second wrapping layer is located on the other side of the polaroid. The second wrapping layer exceeds the polaroid at the edge of the polaroid, and the surface, close to the polaroid, of the second wrapping layer is provided with a second sealing structure which is in a concave-convex shape in the direction perpendicular to the extending direction of the polaroid; and the first sealing structure and the second sealing structure are embedded. The waterproof performance of the display module is improved.

Description

Technical Field

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

[0002] With the continuous development of display technology, people's demands for display products are constantly increasing. For example, display products are required to be waterproof. Wearable products are particularly required to maintain good display quality even when immersed in warm water. However, existing display products are prone to display problems when immersed in warm water. Summary of the Invention

[0003] The present invention provides a display module, a preparation method thereof, and a display device, so as to improve the waterproof performance of the display module.

[0004] To achieve the above technical objectives, the embodiments of the present invention provide the following technical solutions:

[0005] Display module, including:

[0006] Polarizer;

[0007] a first wrapping layer, stacked with the polarizer and located on one side of the polarizer; the first wrapping layer extends beyond the polarizer at an edge of the polarizer, and a first sealing structure having a concave-convex shape and extending perpendicularly to an extending direction of the polarizer is provided on a surface of the first wrapping layer close to the polarizer;

[0008] a second wrapping layer, stacked with the polarizer and located on the other side of the polarizer; the second wrapping layer extends beyond the polarizer at an edge of the polarizer, and a second sealing structure having a concave-convex shape and extending perpendicularly to the polarizer is provided on a surface of the second wrapping layer close to the polarizer;

[0009] Wherein, the first sealing structure is embedded in the second sealing structure.

[0010] Furthermore, the display module further includes:

[0011] An encapsulation layer and a screen body, wherein the encapsulation layer is used to encapsulate the screen body, the encapsulation layer is reused as the first wrapping layer, and the encapsulation layer is located between the polarizer and the screen body;

[0012] Preferably, the screen body is an organic light emitting diode screen body, and the encapsulation layer is a flexible encapsulation layer.

[0013] Furthermore, the encapsulation layer includes at least two encapsulation sub-film layers, and at least part of the encapsulation sub-film layers is provided with the first sealing structure.

[0014] Furthermore, the second wrapping layer is an optical adhesive layer, and the optical adhesive layer is used to bond the polarizer and other film layers in the display module.

[0015] Furthermore, the display module further includes:

[0016] A cover plate is located on a side of the second wrapping layer away from the polarizer, and the optical adhesive layer is reused as a bonding adhesive layer between the polarizer and the cover plate.

[0017] Furthermore, the first sealing structure includes a raised portion, and the raised portion extends along the edge of the polarizer;

[0018] The second sealing structure includes a recessed portion, and the recessed portion is engaged with the raised portion.

[0019] Furthermore, the number of the first sealing structures is at least two, and each of the first sealing structures is arranged in a direction perpendicular to the edge of the polarizer;

[0020] The number of the second sealing structures is at least two, and each of the second sealing structures is arranged in a direction perpendicular to the edge of the polarizer.

[0021] Correspondingly, an embodiment of the present invention further provides a display device, comprising: a display module as described in any embodiment of the present invention.

[0022] Accordingly, an embodiment of the present invention further provides a method for preparing a display module, comprising:

[0023] forming a first wrapping layer, and forming a first sealing structure having a concave-convex shape in an area near an edge of the first wrapping layer;

[0024] forming a polarizer on the first wrapping layer, the polarizer being smaller in size than the first wrapping layer, and being located inside the first sealing structure;

[0025] A second wrapping layer is formed on the polarizer, the second wrapping layer covers the polarizer, and a second sealing structure with a concave-convex shape is formed at a position of the second wrapping layer corresponding to the first sealing structure, and the first sealing structure is embedded in the second sealing structure.

[0026] Furthermore, the second sealing structure having a concave-convex shape is formed at a position of the second wrapping layer corresponding to the first sealing structure, comprising:

[0027] The second wrapping layer is deformed under full lamination pressure by adopting a laminating process to form the second sealing structure.

[0028] In the embodiment of the present invention, a first wrapping layer and a second wrapping layer are stacked with the polarizer, and a first sealing structure with a concave-convex shape is provided in the area where the first wrapping layer extends beyond the polarizer, and a second sealing structure with a concave-convex shape is provided in the area where the second wrapping layer extends beyond the polarizer, thereby preventing water vapor from corroding the polarizer. Specifically, firstly, because the first wrapping layer and the second wrapping layer are respectively located on either side of the polarizer, a first sealing method for the polarizer is formed. Secondly, because both the first wrapping layer and the second wrapping layer extend beyond the edge of the polarizer, that is, the areas of the first wrapping layer and the second wrapping layer are larger than the polarizer, the first wrapping layer and the second wrapping layer can be directly attached to the outer area of the edge of the polarizer (including the wrapping area and the wrapping area), forming a second sealing method for the polarizer. Thirdly, because both the first wrapping layer and the second wrapping layer are provided with a concave-convex shape, and the concave-convex first sealing structure can be interlocked with the concave-convex second sealing structure, the bonding strength of the first wrapping layer and the second wrapping layer is increased, while also increasing the path for water vapor to penetrate into the polarizer, forming a third sealing method for the polarizer. In summary, the display module provided by the embodiment of the present invention can improve the waterproof performance of the display module, which is helpful in preventing display problems of the display product when it is immersed in warm water.

[0029] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic structural diagram of a display module provided by an embodiment of the present invention;

[0032] Figure 2 A schematic structural diagram of another display module provided by an embodiment of the present invention;

[0033] Figure 3 A schematic structural diagram of another display module provided by an embodiment of the present invention;

[0034] Figure 4 A schematic structural diagram of another display module provided by an embodiment of the present invention;

[0035] Figure 5 A schematic structural diagram of another display module provided by an embodiment of the present invention;

[0036] Figure 6 A schematic structural diagram of another display module provided by an embodiment of the present invention;

[0037] Figure 7 A schematic structural diagram of another display module provided by an embodiment of the present invention;

[0038] Figure 8 A schematic structural diagram of another display module provided by an embodiment of the present invention;

[0039] Figure 9 A schematic structural diagram of another display module provided by an embodiment of the present invention;

[0040] Figure 10 A schematic diagram of the structure formed in each step of a method for preparing a display module provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] As described in the background, existing display modules are prone to display issues when immersed in warm water, affecting their waterproof performance. The inventors have discovered that the primary cause of this issue is the requirement for polarizers in display modules. Polarizers are typically coated with a glue layer, such as polyvinyl alcohol (PVA), which is then dyed with iodine (I2) to achieve a polarizing effect. However, PVA glue is readily soluble in water and hydrolyzes under the influence of water vapor, easily leading to an imbalance in the ratio of iodine triions to iodine pentaions at the edges of the polarizer. This can even cause the iodine molecules to evaporate, resulting in transparency and display anomalies.

[0044] In view of this, an embodiment of the present invention provides a display module to improve the waterproof performance of the display module, thereby preventing the polarizer from being affected by water vapor and causing failure, and improving the display effect of the display module. Figure 1 This is a schematic diagram of the structure of a display module provided by an embodiment of the present invention. Figure 1 , the display module includes:

[0045] Polarizer 100;

[0046] The first wrapping layer 200 is stacked with the polarizer 100 and is located on one side of the polarizer 100; the first wrapping layer 200 extends beyond the polarizer 100 at the edge 110 of the polarizer 100 to form a wrapping area A2; in the wrapping area A2, the first wrapping layer 200 is close to the surface of the polarizer 100 ( Figure 1 Exemplarily, the surface is the upper surface of the first wrapping layer 200) and is provided with a first sealing structure 210 in a concave-convex shape along an extending direction perpendicular to the polarizer 100; wherein the extending direction of the polarizer 100 is direction X, and the extending direction perpendicular to the polarizer 100 is direction Y;

[0047] The second wrapping layer 300 is stacked with the polarizer 100 and is located on the other side of the polarizer 100; the second wrapping layer 300 extends beyond the polarizer 100 at the edge 110 of the polarizer 100 to form a wrapping area A3; in the wrapping area A3, the second wrapping layer 300 is close to the surface of the polarizer 100 ( Figure 1 Exemplarily, the surface is the lower surface of the second wrapping layer 300 ) and is provided with a second sealing structure 310 in a concave-convex shape along an extending direction perpendicular to the polarizer 100 ;

[0048] The first sealing structure 210 is interlocked with the second sealing structure 310. Interlocking means that if the first sealing structure 210 is a convex portion, the second sealing structure 310 is a concave portion, and the two are tightly fitted; if the first sealing structure 210 is a concave portion, the second sealing structure 310 is a convex portion, and the two are tightly fitted; if the first sealing structure 210 includes a convex portion and a concave portion, the second sealing structure 310 includes a concave portion and a convex portion, the concave portion in the first sealing structure 210 is tightly fitted with the convex portion in the second sealing structure 310, and the convex portion in the first sealing structure 210 is tightly fitted with the concave portion in the second sealing structure 310.

[0049] The interlocked first sealing structure 210 and the second sealing structure 310 can seal the polarizer 100 and protect the side areas of the polarizer 100 , thereby preventing the polarizer 100 from being corroded by water vapor and thus preventing the polarizer 100 from being hydrolyzed. Specifically, on the one hand, since the first wrapping layer 200 and the second wrapping layer 300 are respectively located on both sides of the polarizer 100, a first sealing method for the polarizer 100 is formed; on the other hand, since the first wrapping layer 200 and the second wrapping layer 300 both exceed the edge 110 of the polarizer 100, that is, the areas of the first wrapping layer 200 and the second wrapping layer 300 are both larger than the polarizer 100, the first wrapping layer 200 and the second wrapping layer 300 can be directly bonded to the outer area of the edge 110 of the polarizer 100 (including the wrapping area A2 and the wrapping area A3), forming a second sealing method for the polarizer 100; on the other hand, since the first wrapping layer 200 and the second wrapping layer 300 are both provided with concave-convex shapes, and the concave-convex first sealing structure 210 can be embedded with the concave-convex second sealing structure 310, the bonding strength of the first wrapping layer 200 and the second wrapping layer is increased, and at the same time, the path for water vapor to penetrate into the polarizer 100 is increased, forming a third sealing method for the polarizer 100. In summary, the display module provided by the embodiment of the present invention can improve the waterproof performance of the display module, which is helpful in preventing display problems of the display product when it is immersed in warm water.

[0050] Figure 2 This is a structural diagram of another display module provided by an embodiment of the present invention. Figure 2 On the basis of the above embodiments, optionally, the display module further includes: an encapsulation layer 400 and a screen body 500, the encapsulation layer 400 is used to encapsulate the screen body 500, the encapsulation layer 400 is reused as the first wrapping layer 200, and the encapsulation layer 400 is located between the polarizer 100 and the screen body 500.

[0051] Among them, the screen body 500 is the main component of the display module, on which a display unit and a driving circuit for driving the display unit to display are provided. In some embodiments, a touch film layer or a fingerprint recognition film layer is also provided on the screen body 500. The encapsulation layer 400 is used to encapsulate the screen body 500 and is an important component of the display module. It can protect the screen body 500 from damage by the external environment, such as preventing moisture, oxygen and dust from entering the interior of the screen body 500, thereby extending the service life of the screen body 500. In an embodiment of the present invention, the encapsulation layer 400 is configured to be reused as the first wrapping layer 200, that is, the encapsulation layer 400 can be configured to be located on one side of the polarizer 100 in the display module, and extend beyond the polarizer 100 at the edge 110 of the polarizer 100 to form a wrapping area A2; in the wrapping area A2, the first wrapping layer 200 is close to the surface of the polarizer 100 ( Figure 2 For example, the surface is the upper surface of the encapsulation layer 400 and is provided with a first sealing structure 210 in a concave-convex shape along the direction Y. The advantage of this arrangement is that one less film layer can be provided in the display module, thereby facilitating a thinner and lighter display module.

[0052] In one embodiment, the screen 500 is optionally an organic light-emitting diode (OLED) screen, and the encapsulation layer 400 is a flexible encapsulation layer. The OLED screen is provided with an array of OLED devices. The organic semiconductor light-emitting material in the OLED devices emits light through carrier injection and recombination under the influence of an electric field. OLED devices exhibit self-luminescence properties and have a sandwich-like structure, with the organic semiconductor light-emitting material located between a cathode and an anode. In some embodiments, to improve luminous efficiency, additional functional layers, such as a hole transport layer, a hole injection layer, an electron transport layer, and an electron injection layer, are inserted between the light-emitting layer and the electrodes. Furthermore, an encapsulation layer 400 is provided on the OLED screen to ensure stable luminescence of the OLED devices, thereby meeting the commercialization requirements of the OLED screen. The provision of the encapsulation layer 400 protects the OLED devices from contact with water and oxygen, thereby preventing aging issues caused by the sensitivity of the organic materials in the OLED devices to substances such as water vapor and oxygen. Therefore, the provision of the encapsulation layer 400 helps reduce the aging rate of the OLED devices and extend their service life. The flexible encapsulation layer 400 is a layer having certain bending properties. For example, a thin-film encapsulation (TFE) process can be used to prepare the flexible encapsulation layer 400. Because the material of the flexible encapsulation layer 400 has certain bending properties and strong plasticity, it is conducive to achieving a concave-convex first sealing structure.

[0053] Furthermore, thin-film encapsulation has various structural forms, including single-layer and multi-layer film encapsulation structures, which can be configured as needed in practical applications. Thin-film encapsulation can be composed of various materials, such as inorganic thin-film encapsulation, inorganic-inorganic thin-film encapsulation, organic thin-film encapsulation, organic-organic thin-film encapsulation, organic-inorganic thin-film encapsulation, and inorganic-organic-inorganic thin-film encapsulation, which can be configured as needed in practical applications.

[0054] Figure 3 This is a structural diagram of another display module provided by an embodiment of the present invention. Figure 3 On the basis of the above embodiments, optionally, the encapsulation layer 400 includes at least two encapsulation sub-film layers ( Figure 3 exemplarily shows the encapsulation sub-film layers 410 and 420), at least part of the encapsulation sub-film layers are provided with the first sealing structure 210. Figure 3 As shown, the encapsulation sub-film layer 410 is provided with a first sealing structure 210, that is, the first sealing structure 210 is provided on the encapsulation sub-film layer 410 close to the polarizer 100 in the encapsulation layer 400. This arrangement eliminates the need to provide the first sealing structure 210 on the encapsulation sub-film layer 420, thereby reducing the process difficulty.

[0055] Figure 4 This is a structural diagram of another display module provided by an embodiment of the present invention. Figure 4 In another embodiment, optionally, both the encapsulating sub-film layer 410 and the encapsulating sub-film layer 420 are provided with the first sealing structure 210. That is, each sub-film layer in the encapsulating layer 400 is provided with the first sealing structure 210, so that the first sealing structures 210 are stacked. Optionally, the protrusion thickness of the first sealing structure 210 on the encapsulating sub-film layer 420 and the first sealing structure 210 on the encapsulating sub-film layer 410 are the same; alternatively, the protrusion thickness of the first sealing structure 210 on the encapsulating sub-film layer 410 is greater than the protrusion thickness of the first sealing structure 210 on the encapsulating sub-film layer 420. This configuration helps to enhance the hardness of the first sealing structure 210, thereby ensuring a good sealing effect.

[0056] Figure 5 This is a structural diagram of another display module provided by an embodiment of the present invention. Figure 5Based on the above embodiments, the second wrapping layer 300 can optionally be an optical adhesive layer, which is used to bond the polarizer 100 to other film layers in the display module. The optically clear adhesive (OCA) layer has good ductility and plasticity before curing, and can deform under full lamination pressure to seal the gap between the first sealing structure 210 surrounding the first wrapping layer 200 and the edge 110 of the polarizer 100. This facilitates the formation of the second sealing structure 310 on the first sealing structure 210, thereby reducing the difficulty of manufacturing.

[0057] Continue to see Figure 5 Based on the above embodiments, the display module optionally further includes a cover plate 600, which is located on the side of the second wrapping layer 300 away from the polarizer 100. The optical adhesive layer is reused as a bonding layer between the polarizer 100 and the cover plate 600. This configuration eliminates one film layer in the display module, thereby facilitating a thinner and lighter display module.

[0058] Figure 6 A schematic diagram of the structure of another display module provided by an embodiment of the present invention. Figure 5 and Figure 6 , among which, Figure 5 The difference between the cross-sectional view of the module and the Figure 6 is a top view of the display module, Figure 6 In the figure, direction Z is perpendicular to the plane containing directions X and Y. Based on the above embodiments, optionally, the first sealing structure 210 includes a raised portion that extends along the edge 110 of the polarizer 100. For example, if the polarizer 100 is a rounded rectangle, the first sealing structure 210 is in the shape of a rounded rectangular ring. For another example, if the polarizer 100 is circular, the first sealing structure 210 is in the shape of a circular ring. For another example, if the polarizer 100 is a right-angled rectangle, the first sealing structure 210 is in the shape of a right-angled rectangular ring.

[0059] The second sealing structure 310 includes a recessed portion that engages with a raised portion. For example, during the manufacturing process of this display module, if the first wrapping layer 200 is formed first, the raised portion can be formed on the first wrapping layer 200 by coating, etc., and then the second wrapping layer 300 is formed. The recessed portion is then formed on the second wrapping layer 300 under lamination pressure, deposition, inkjet, or sputtering. Therefore, this arrangement facilitates process simplification and ease of implementation.

[0060] Figure 7 This is a structural diagram of another display module provided by an embodiment of the present invention. Figure 7 In another embodiment, with Figure 6The structure shown differs in that the first sealing structure 210 includes a recessed portion, while the second sealing structure 310 includes a raised portion, with the recessed portion interlocking with the raised portion. For example, during the fabrication of this display module, if the second wrapping layer 300 is formed first, the raised portion can be formed on the second wrapping layer 300 by coating, etc., and then the first wrapping layer 200 is formed, and the recessed portion is formed on the first wrapping layer 200 under lamination pressure, deposition, inkjet, or sputtering. Therefore, this arrangement facilitates process simplification and ease of implementation.

[0061] Figure 8 A schematic structural diagram of another display module provided by an embodiment of the present invention, Figure 9 This is a structural diagram of another display module provided by an embodiment of the present invention. Figure 8 and Figure 9 On the basis of the above embodiments, optionally, the number of the first sealing structures 210 is at least two, and each first sealing structure 210 is arranged in a direction perpendicular to the edge 110 of the polarizer 100; the number of the second sealing structures 310 is at least two, and each second sealing structure 310 is arranged in a direction perpendicular to the edge 110 of the polarizer 100. Figure 9 As shown, for example, the direction perpendicular to the edge 110 of the polarizer 100 can be direction X or direction Z, depending on the shape of the display module. This arrangement allows each first sealing structure 210 (and second sealing structure 310) to form at least two layers of waterproof protection for the polarizer 100 using the concave and convex structures, further improving the waterproof effect of the display module.

[0062] An embodiment of the present invention further provides a display device, which may be a wearable product, a mobile phone, a tablet computer, etc. The display device includes a display module as provided in any embodiment of the present invention, and its technical principles and effects are similar and will not be described in detail.

[0063] An embodiment of the present invention further provides a method for preparing a display module, and the method can be applied to the display module provided by any embodiment of the present invention. Figure 10 This is a schematic diagram of the structure formed in each step of a method for preparing a display module provided by an embodiment of the present invention. Figure 10 , the preparation method comprises the following steps:

[0064] S110 , forming a first wrapping layer 200 , and forming a first sealing structure 210 in a concave-convex shape in a region near an edge of the first wrapping layer 200 .

[0065] Among them, the area near the edge of the first wrapping layer 200 is the wrapping area A2, and the wrapping area A2 is the outer area of the edge of the polarizer. Optionally, the first wrapping layer 200 is an encapsulation layer 400, and preferably the encapsulation layer 400 is a flexible encapsulation layer. The flexible encapsulation layer 400 refers to an encapsulation layer with certain bending properties. For example, the preparation of the flexible encapsulation layer 400 can be achieved by using a thin film encapsulation (TFE) process. Since the material of the flexible encapsulation layer 400 has certain bending properties, its plasticity is relatively strong, which is conducive to realizing a first sealing structure with a concave and convex shape. For example, the first flexible encapsulation layer 400 can be formed by a lamination process, a deposition process, an inkjet process or a sputtering process, and the first sealing structure 210 can be formed by coating or the like.

[0066] S120 , forming a polarizer 100 smaller in size than the first encapsulating layer 200 on the first encapsulating layer 200 , wherein the polarizer 100 is located inside the first sealing structure 210 .

[0067] The polarizer 100 is smaller than the first wrapping layer 200 so that the first wrapping layer 200 extends beyond the polarizer 100 at the edge 110 thereof, forming a wrapping area A2. The polarizer 100 can be formed using an existing process and will not be described in detail here.

[0068] S130 , forming a second wrapping layer 300 on the polarizer 100 , the second wrapping layer 300 covers the polarizer 100 , and forming a second sealing structure 310 with a concave-convex shape at a position of the second wrapping layer 300 corresponding to the first sealing structure 210 , and the first sealing structure 210 and the second sealing structure 310 are embedded.

[0069] Among them, the size of the polarizer 100 is smaller than the second wrapping layer 300, and the second wrapping layer 300 exceeds the polarizer 100 at the edge 110 of the polarizer 100 to form a wrapping area A3, and the wrapping area A2 corresponds to the wrapping area A3. Optionally, the second wrapping layer 300 is an optically clear adhesive (OCA), which is used to bond the polarizer 100 and other film layers in the display module. Among them, the optical adhesive layer has good ductility and plasticity before curing, and can be deformed under full bonding pressure to seal the gap between the first sealing structure 210 around the first wrapping layer 200 and the edge 110 of the polarizer 100, that is, it is conducive to forming a second sealing structure 310 on the first sealing structure 210 that is embedded therewith, thereby reducing the difficulty of preparation. Exemplarily, a bonding process is adopted to deform the second wrapping layer 300 under full bonding pressure to form the second sealing structure 310. After the second wrapping layer 300 with the second sealing structure 310 is formed, the film layer is cured.

[0070] In the embodiment of the present invention, a first sealing structure 210 is formed on the first wrapping layer 200, and a second sealing structure 310 is formed on the second wrapping layer 300, and the two are interlocked. The interlocked first sealing structure 210 and second sealing structure 310 can seal the water vapor intrusion path outside the polarizer 100, protecting the side areas of the polarizer 100, and preventing water vapor from corroding the polarizer 100, thereby preventing hydrolysis of the polarizer 100. Furthermore, the preparation process is simple and easy to implement.

[0071] Furthermore, the first wrapping layer 200 can be reused from the encapsulation layer on the screen, and the second wrapping layer 300 can be reused from the optical adhesive layer for bonding to the cover plate. This configuration eliminates the need to add new production processes to the manufacturing process, thereby reducing the cost of new equipment and not reducing production efficiency.

[0072] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0073] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A display module, characterized in that: include: Polarizer; a first wrapping layer, stacked with the polarizer and located on one side of the polarizer; the first wrapping layer extends beyond the polarizer at an edge of the polarizer, and a first sealing structure having a concave-convex shape and extending perpendicularly to an extending direction of the polarizer is provided on a surface of the first wrapping layer close to the polarizer; a second wrapping layer, stacked with the polarizer and located on the other side of the polarizer; the second wrapping layer extends beyond the polarizer at an edge of the polarizer, and a second sealing structure having a concave-convex shape is provided on a surface of the second wrapping layer close to the polarizer and extending in a direction perpendicular to the polarizer; Wherein, the first sealing structure is embedded in the second sealing structure.

2. The display module according to claim 1, wherein: Also includes: An encapsulation layer and a screen body, wherein the encapsulation layer is used to encapsulate the screen body, the encapsulation layer is reused as the first wrapping layer, and the encapsulation layer is located between the polarizer and the screen body; Preferably, the screen body is an organic light emitting diode screen body, and the encapsulation layer is a flexible encapsulation layer.

3. The display module according to claim 2, wherein: The encapsulation layer includes at least two encapsulation sub-film layers, and at least part of the encapsulation sub-film layers is provided with the first sealing structure.

4. The display module according to claim 1, wherein: The second wrapping layer is an optical adhesive layer, and the optical adhesive layer is used to bond the polarizer and other film layers in the display module.

5. The display module according to claim 4, wherein: Also includes: A cover plate is located on a side of the second wrapping layer away from the polarizer, and the optical adhesive layer is reused as a bonding adhesive layer between the polarizer and the cover plate.

6. The display module according to claim 1, wherein: The first sealing structure includes a raised portion, and the raised portion extends along the edge of the polarizer; The second sealing structure includes a recessed portion, and the recessed portion is engaged with the raised portion.

7. The display module according to claim 1, wherein: There are at least two first sealing structures, and each of the first sealing structures is arranged in a direction perpendicular to the edge of the polarizer; The number of the second sealing structures is at least two, and each of the second sealing structures is arranged in a direction perpendicular to the edge of the polarizer.

8. A display device, characterized in that: include: The display module according to any one of claims 1 to 7.

9. A method for preparing a display module, characterized in that: include: forming a first wrapping layer, and forming a first sealing structure having a concave-convex shape in an area near an edge of the first wrapping layer; forming a polarizer on the first wrapping layer, the polarizer being smaller in size than the first wrapping layer, and being located inside the first sealing structure; A second wrapping layer is formed on the polarizer, the second wrapping layer covers the polarizer, and a second sealing structure with a concave-convex shape is formed at a position of the second wrapping layer corresponding to the first sealing structure, and the first sealing structure is embedded in the second sealing structure.

10. The method for preparing a display module according to claim 9, wherein: The second sealing structure having a concave-convex shape is formed at a position of the second wrapping layer corresponding to the first sealing structure, comprising: The second wrapping layer is deformed under full lamination pressure by adopting a laminating process to form the second sealing structure.

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