Display module, manufacturing method thereof and display device

Abstract

The embodiments of the present specification provide a display module, a manufacturing method thereof and a display device. The manufacturing method comprises: forming a transparent adhesive layer comprising a transparent area on the light-emitting side of an array substrate; the transparent area projects to cover a display area of the array substrate; wherein the array substrate comprises the display area and a non-display area surrounding the display area; a polarizing layer is arranged on the side of the transparent adhesive layer away from the array substrate; a first black hot melt adhesive layer is arranged between the polarizing layer and the array substrate; the first black hot melt adhesive layer at least partially overlaps with the non-display area in projection on the array substrate. Through the above technical method, when the transparent adhesive layer is arranged, there is no other component around the transparent adhesive layer, so that the air between the transparent adhesive layer and the touch layer can be completely removed during the process of arranging the transparent adhesive layer, so that no bubbles are generated in the transparent adhesive layer, thereby improving the display effect.

Description

Technical Field

[0001] The embodiments described in this specification relate to the display field, specifically to a display module, its manufacturing method, and a display device. Background Technology

[0002] With the development of science and technology, various electronic products have become an indispensable part of our lives, playing a vital role in all aspects of people's work, study, communication, and daily life. As products continue to iterate and develop, people's demands for the display effects of electronic products are also gradually increasing. However, the metal lines in the display panel may cause glare, thus affecting the display effect.

[0003] Generally, black adhesive can be applied above the metal lines in the display panel, and then the step difference can be filled with pressure-sensitive adhesive on the polarizing layer. This method can effectively block the metal lines. However, air bubbles may appear in this adhesive, which can affect the display effect. Summary of the Invention

[0004] In view of this, this specification provides several embodiments of a display module, a method for manufacturing the same, and a display device, to reduce bubbles in the display module and improve the display effect to a certain extent.

[0005] To achieve the above objectives, one embodiment of this specification provides a method for manufacturing a display module. The method includes: forming a transparent adhesive layer including a transparent area on the light-emitting side of an array substrate; the projection of the transparent area onto the array substrate covering a display area; wherein the array substrate includes the display area and a non-display area surrounding the display area; a polarizing layer is formed on the side of the transparent adhesive layer away from the array substrate; a first black hot melt adhesive layer is formed between the polarizing layer and the array substrate; the projection of the first black hot melt adhesive layer onto the array substrate at least partially overlaps with the non-display area.

[0006] One embodiment of this specification provides a display module, the display module including an array substrate having a display area and a non-display area surrounding the display area, a first adhesive layer, and a polarizing layer; the polarizing layer is disposed on one side of the array substrate; the first adhesive layer is disposed between the array substrate and the polarizing layer; wherein the first adhesive layer includes a transparent adhesive layer forming a transparent area, and a first black hot melt adhesive layer surrounding the transparent area; wherein the projection of the transparent area on the array substrate covers the display area; the projection of the first black hot melt adhesive layer on the array substrate at least partially overlaps with the non-display area.

[0007] One embodiment of this specification provides a display device, the display device including any of the display modules described above.

[0008] Compared with related technologies, the manufacturing method of the display module provided in this specification has the following advantages: by ensuring that there are no other components around the transparent adhesive layer during its application, the air between the transparent adhesive layer and the touch layer can be completely eliminated. Then, the polarizing layer, the second adhesive layer, and the cover plate are applied, and finally, the first black hot melt adhesive layer that blocks the metal wires is applied. This ensures that no air bubbles are generated in the transparent adhesive layer, thereby improving the display effect. Attached Figure Description

[0009] The accompanying drawings are provided to further illustrate the embodiments described in the specification and form part of the specification. They are used together with the following detailed description to explain this specification, but do not constitute a limitation on the embodiments described in this specification. In the accompanying drawings...

[0010] Figure 1 This is a flowchart illustrating a method for manufacturing a display module, as provided in one embodiment of this specification.

[0011] Figure 2 This is a schematic diagram of an array substrate provided for one embodiment of this specification.

[0012] Figure 3 This is a schematic diagram of the structure of a display module provided for one embodiment of this specification.

[0013] Figure 4 This is a schematic diagram of the structure of a display module provided for one embodiment of this specification.

[0014] Figure 5 This is a schematic diagram of the structure of a display module provided for one embodiment of this specification.

[0015] Figure 6 This is a schematic diagram of the structure of a display module provided for one embodiment of this specification. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this application.

[0017] It should be noted that in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0018] The features and implementation methods of various aspects of this specification will now be described in detail. Furthermore, the features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more implementation methods.

[0019] Please see Figure 1 This book discloses one embodiment of a method for manufacturing a display module, the method comprising the following steps.

[0020] Step S120: A transparent adhesive layer including a transparent area is formed on the light-emitting side of the array substrate; the transparent area is projected onto the display area of ​​the array substrate; wherein the array substrate includes the display area and a non-display area surrounding the display area.

[0021] In this embodiment, the display module may include an array substrate having a display area and a non-display area surrounding the display area. Light emitted from multiple pixel units of the array substrate typically exits the display module from one side of the array substrate, forming a display image; this side is the light-emitting side of the array substrate. The array substrate may include a display area for displaying the image and a non-display area surrounding the display area.

[0022] In this embodiment, the transparent adhesive can be used to adhere the polarizing layer. The transparent adhesive can form a transparent area, the projection of which covers the display area on the array substrate, allowing light emitted from the array substrate to pass through and form the display image in the display area.

[0023] Step S130: A polarizing layer is disposed on the side of the transparent adhesive layer away from the array substrate.

[0024] In this embodiment, in order to reduce the impact of emitted light on the display effect of the array substrate, a polarizing layer is provided on the side of the transparent adhesive layer away from the array substrate. This polarizing layer can also reduce the reflection of ambient light incident on the display module, thereby improving the display effect.

[0025] Step S140: A first black hot melt adhesive layer is disposed between the polarizing layer and the array substrate; the projection of the first black hot melt adhesive layer on the array substrate at least partially overlaps with the non-display area.

[0026] In this embodiment, the black hot melt adhesive is liquid at approximately 70 degrees Celsius and solid at room temperature. Utilizing the properties of this black hot melt adhesive, a first black hot melt adhesive layer can be formed in the region opposite the polarizing layer and the array substrate by dripping or injecting the liquid black hot melt adhesive. This first black hot melt adhesive layer is at least partially opposite the non-display area.

[0027] In this embodiment, the first black hot melt adhesive and the transparent adhesive layer are disposed in the same layer and can serve as the first adhesive layer. The thickness of the first black hot melt adhesive layer and the transparent adhesive layer in the stacking direction of the display module can be the same, thereby making the display module flat.

[0028] In some embodiments, after the step of setting the polarizing layer on the side of the transparent adhesive layer away from the array substrate, a cover plate may be set on the side of the polarizing layer away from the array substrate.

[0029] In this embodiment, the cover plate has good mechanical strength, enabling it to protect the display module and reduce or prevent damage to the display module from external forces. The cover plate can cover at least a portion of the polarizing layer, and it can be bonded to the side of the polarizing layer away from the display panel using a third adhesive layer.

[0030] After the step of setting a first black hot melt adhesive layer between the polarizing layer and the array substrate, the method further includes: setting a middle frame on the side of the array substrate away from the light-emitting side; forming a first slotted area between the middle frame and the cover plate; and setting a second black hot melt adhesive layer in the first slotted area.

[0031] Optionally, the orthographic projections of the middle frame and the cover plate on the middle frame coincide. In this embodiment, the layer of the array substrate away from the light-emitting side is the non-display surface of the array substrate, that is, the middle frame is provided on the back plate side away from the light-emitting side of the array substrate. The middle frame is made of a conductive material (e.g., metal) and can be used to fix and support the array substrate and the cover plate, etc. The orthographic projection of the cover plate on the middle frame coincides with the middle frame. There are no other components in the area between the middle frame and the cover plate, so a first groove area is formed between the middle frame and the cover plate. Black hot melt adhesive can be applied to the first groove area by dripping or coating. After the black hot melt adhesive solidifies, a second black hot melt adhesive layer is formed. The second black hot melt adhesive layer can prevent light leakage from the side of the display module from the array substrate, thereby improving the display effect.

[0032] Optionally, the second black adhesive layer is made of the same material as the first black hot melt adhesive layer. In this embodiment, the second black hot melt adhesive layer and the first black hot melt adhesive layer are made of the same material, which can unify the color of the first black hot melt adhesive layer and the second black hot melt adhesive layer, and can avoid the color difference problem between the first black hot melt adhesive layer and the second black hot melt adhesive layer to a certain extent, thereby improving the display effect of the display module.

[0033] In related technologies, the black matrix that blocks the metal lines between the touch layer and the polarizing layer is achieved through the following method: First, the black matrix is ​​applied to the non-display area of ​​the touch layer. Then, the polarizing layer with a pressure-sensitive adhesive layer is pressed together with the black matrix by external force, essentially using the pressure-sensitive adhesive layer on the polarizing layer to fill the intermediate gap. When the pressure-sensitive adhesive layer is bonded to the touch layer, the air between the pressure-sensitive adhesive layer and the touch layer is difficult to completely expel due to the obstruction of the black matrix. After the pressure-sensitive adhesive layer and the touch layer are bonded, air remains between them, forming air bubbles in the pressure-sensitive adhesive layer. During display, these air bubbles affect the display effect.

[0034] In this embodiment, the step of forming a transparent adhesive layer including a transparent area on the light-emitting side of the array substrate may include: forming a touch layer on the light-emitting side of the array substrate; and forming the transparent adhesive layer on the side of the touch layer away from the array substrate.

[0035] The transparent adhesive layer forms a transparent area, which projects onto the display area on the array substrate. A polarizing layer is stacked on the side of the transparent adhesive layer away from the array substrate. A grooved area is formed in the region opposite the polarizing layer and the touch layer. A first black hot melt adhesive layer can be applied to the grooved area by dripping or injecting. By ensuring that there are no other components around the transparent adhesive layer during its application, air between the transparent adhesive layer and the touch layer can be completely eliminated. The polarizing layer is then applied, followed by the first black hot melt adhesive layer to block reflections from the metal lines. This prevents the formation of air bubbles in the transparent adhesive layer, thereby improving the display effect.

[0036] The touch layer is located on the light-emitting side of the array substrate. This touch layer enables the display module to have touch operation function, that is, users can operate the device by lightly touching the display module without relying on a keyboard and mouse, making human-computer interaction more direct and making electronic devices with touch display modules more convenient to carry.

[0037] In this embodiment, the transparent adhesive layer is disposed on the light-emitting side of the touch layer away from the array substrate. The transparent adhesive layer covers a portion of the touch layer, while at least a portion of the touch layer located in the non-display area is not covered by the transparent adhesive layer, reserving space for a black hot melt adhesive layer to block the metal lines. In this embodiment, the portion of the touch layer located in the non-display area includes some metal lines, which may reflect light and thus affect the display effect. By disposing of a first black hot melt adhesive layer in at least a portion of the non-display area of ​​the touch layer, during the display module's display process, this first black hot melt adhesive layer can block light illuminating the metal lines of the touch layer located in the non-display area, preventing light from escaping from the non-display area and thereby improving the display effect.

[0038] In this embodiment, a transparent second adhesive layer with high light transmittance can be disposed between the touch layer and the first adhesive layer. The black hot melt adhesive is applied to the touch layer by dripping or injecting at a temperature of approximately 70 degrees Celsius. Specifically, for example, this temperature can be 60, 65, 70, or 75 degrees Celsius. The second adhesive layer isolates the touch layer from the black hot melt adhesive, preventing contact between the touch layer and the adhesive, thus effectively protecting the touch layer.

[0039] In some embodiments, the material of the second adhesive layer has a melting temperature higher than that of the black hot melt adhesive when it is liquid, which allows the second adhesive layer to maintain its shape and gives the display module good flatness. Specifically, for example, the material of the second adhesive layer has a melting temperature range of 60 degrees to 80 degrees Celsius. Specifically, for example, this temperature can be 60 degrees Celsius, 65 degrees Celsius, 70 degrees Celsius, 75 degrees Celsius, and 80 degrees Celsius.

[0040] Please see Figure 2 and Figure 3 This specification provides a display module 10, which may include an array substrate 210 having a display area 110 and a non-display area 120 surrounding the display area 110, a first adhesive layer 230, and a polarizing layer 240; the polarizing layer 240 is disposed on one side of the array substrate 210; the first adhesive layer 230 is disposed between the touch layer 220 and the polarizing layer 240; wherein the first adhesive layer 230 includes a transparent adhesive layer 231 forming a transparent area 233, and a first black hot melt adhesive layer 232 surrounding the transparent area; wherein the projection of the transparent area 233 onto the array substrate 210 covers the display area 110; the projection of the first black hot melt adhesive layer 232 onto the array substrate 210 at least partially overlaps with the non-display area 120.

[0041] In this embodiment, the display module 10 may include an array substrate 210, a first adhesive layer 230, and a polarizing layer 240. The array substrate 210 may include a display area 110 for displaying an image and a non-display area 120 for setting circuits and other components; the non-display area 120 does not display an image. Generally, light is emitted from one side of the array substrate 210 to form the display image, while the other side does not emit light. The display module 10 can be formed by providing a polarizing layer 240 on the light-emitting side of the array substrate 210. The first adhesive layer 230 may include a transparent adhesive layer 231, which forms a transparent area 233 opposite to the display area 110. The transparent area 233 can transmit light well, and the transparent adhesive layer 231 does not affect the display image effect. The first adhesive layer 230 may also include a first black hot melt adhesive layer 232 formed by applying black hot melt adhesive to one side of the light-emitting side of the array substrate 210, opposite to the non-display area 120, through methods such as dripping or injection. That is, the first black hot melt adhesive layer 232 at least partially overlaps with the non-display area 120 projected onto the array substrate 210. This arrangement of the first adhesive layer 230 avoids the generation of air bubbles in the transparent adhesive layer 231 caused by the arrangement of the first adhesive layer 230 in related technologies, thereby improving the display effect.

[0042] Please see Figure 4 In some embodiments, the display module 10 further includes: a touch layer 220 disposed between the array substrate 210 and the first adhesive layer 230; and a second adhesive layer 250 disposed between the first adhesive layer 230 and the touch layer 220.

[0043] In this embodiment, the touch layer 220 is disposed on the light-emitting side of the array substrate 210. The first black hot melt adhesive layer 232 surrounds the transparent area 233 and is disposed at least partially opposite to the non-display area 120. It can block the metal lines of the touch layer 220 located in part of the non-display area 120, which can avoid the occurrence of metal line reflection to a certain extent, thereby improving the display effect.

[0044] In this embodiment, the black hot melt adhesive, when in a liquid state, has a temperature of approximately 70 degrees Celsius. To isolate the black hot melt adhesive from the touch layer 220, a second adhesive layer 250 is provided between the first adhesive layer 230 (including a first black hot melt adhesive layer 232 and a transparent adhesive layer 231) and the touch layer 220. The material of the second adhesive layer 250 has a melting temperature higher than that of the first black hot melt adhesive layer, thus protecting the touch layer 220.

[0045] In some embodiments, the first black hot melt adhesive layer 232 includes a first surface 2321 in contact with the transparent adhesive layer 231 and a second surface 2322 facing away from the first surface 2321, wherein the distance between the first surface 2321 and the second surface 2322 is in the range of 0.3 mm to 0.6 mm.

[0046] In this embodiment, if the distance between the first surface 2321 and the second surface 2322 of the first black hot melt adhesive layer 232 is too large, it may reduce the area of ​​the display area 110, thus affecting the display effect. If the distance between the first surface 2321 and the second surface 2322 of the first black hot melt adhesive layer 232 is too small, it may not be able to effectively shield the metal lines of the touch layer 220 located in the non-display area 120, thus affecting the display effect. When the distance between the first surface 2321 and the second surface 2322 of the first black hot melt adhesive layer 232 is set in the range of 0.3mm to 0.6mm, it can effectively shield the metal lines of the touch layer located in the non-display area 120, and also ensure the area of ​​the display area 110 of the display module 10, thereby improving the display effect. Specifically, for example, the distance between the first surface 2321 and the second surface 2322 can be 0.3mm, 0.4mm, 0.5mm, or 0.6mm.

[0047] Please see Figure 5 and Figure 6 In some embodiments, the display module 10 further includes a middle frame 260; the middle frame 260 is disposed on the side of the array substrate 210 away from the light-emitting side; optionally, the display module 10 may further include a cover plate 270 and a third adhesive layer 280. The third adhesive layer 280 is disposed on the side of the polarizing layer 240 away from the array substrate 210; the cover plate 270 is disposed on the side of the third adhesive layer 280 away from the array substrate 210; a second black hot melt adhesive layer 290 is disposed between the middle frame 260 and the cover plate 270. Optionally, the orthographic projection of the cover plate 270 onto the middle frame 260 coincides with the middle frame 260; optionally, the second black hot melt adhesive layer 290 is made of the same material as the first black hot melt adhesive layer 232.

[0048] In this embodiment, a cover plate 270 protecting the light-emitting devices in the array substrate 210 is provided on the side of the polarizing layer 240 away from the array substrate 210. A third adhesive layer 280 is disposed between the cover plate 270 and the polarizing layer 240, and the cover plate 270 is bonded to the polarizing layer 240 through the third adhesive layer 280. A middle frame 260 is disposed on the side of the array substrate 210 away from the light-emitting layer. The orthographic projection of the cover plate 270 onto the middle frame 260 coincides with the middle frame 260. There are no other components between the middle frame 260 and the cover plate 270, forming a first slotted area 291. Black hot melt adhesive is coated or otherwise applied to the first slotted area 291 to form a second black hot melt adhesive layer 290. The second black hot melt adhesive layer 290 is made of the same material as the first black hot melt adhesive layer 232, which can avoid color difference between the first black hot melt adhesive layer 232 and the second black hot melt adhesive layer 290.

[0049] In some embodiments, the optical density value of the first black hot melt adhesive layer 232 is in the range of 5 to 6.

[0050] In this embodiment, the light density that the first black hot melt adhesive layer 232 can absorb is called absorbance, which can also be called optical density (OD). Absorbance can be characterized by optical density value (i.e., OD value). When the optical density value of the first black hot melt adhesive layer 232 is in the range of 5 to 6, it can effectively absorb the reflected light from the metal lines and improve the display effect. Specifically, for example, the optical density value of the first black hot melt adhesive layer 232 can be 5.

[0051] In some embodiments, the thickness of the first adhesive layer 230 ranges from 0.5 mm to 0.6 mm.

[0052] In this embodiment, if the first adhesive layer 230 is too thick in the lamination direction, although it can absorb light very well, it is not conducive to the thin and light design of the display module. If the first adhesive layer 230 is too thin in the lamination direction, although it is beneficial to the thin and light design of the display module 10, it cannot guarantee good absorption of the light reflected by the metal lines, thus failing to effectively block the metal lines. In order to both ensure the thin and light design of the display module and effectively block the metal lines, the thickness of the first adhesive layer 230 is in the range of 0.5mm to 0.6mm. Specifically, for example, the thickness of the first adhesive layer 230 can be 0.5mm, 0.55mm, or 0.6mm.

[0053] One embodiment of this specification provides a display device, which may include any of the display modules described above.

[0054] The various embodiments described in this specification emphasize the parts that differ from other embodiments, and these embodiments can be explained by comparison with each other. Any combination of the various embodiments described in this specification, based on general technical knowledge, is covered within the scope of this specification.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0056] The above description is only a part of the embodiments described in this specification and is not intended to limit this specification. Any modifications or equivalent substitutions made within the spirit and principles of this specification should be included within the scope of this specification.

Claims

1. A method for manufacturing a display module, characterized in that, The manufacturing method includes: A transparent adhesive layer comprising a transparent area is formed on the light-emitting side of an array substrate; the transparent area is projected onto the display area of ​​the array substrate; wherein the array substrate includes the display area and a non-display area surrounding the display area; when the transparent adhesive layer is formed, there are no other components around the transparent adhesive layer; A polarizing layer is disposed on the side of the transparent adhesive layer away from the array substrate, and the transparent adhesive layer is used to adhere the array substrate and the polarizing layer; A first black hot melt adhesive layer is disposed between the polarizing layer and the array substrate; the projection of the first black hot melt adhesive layer onto the array substrate at least partially overlaps with the non-display area. The step of forming a transparent adhesive layer including a transparent region on the light-emitting side of the array substrate includes: A touch layer is provided on the light-emitting side of the array substrate; The transparent adhesive layer is disposed on the side of the touch layer away from the array substrate; Before the transparent adhesive layer is disposed on the side of the touch layer away from the array substrate, the manufacturing method further includes: disposing a transparent second adhesive layer between the touch layer and the transparent adhesive layer, wherein the material of the second adhesive layer has a melting temperature higher than the temperature of the first black hot melt adhesive layer in the liquid state; After a polarizing layer is deposited on the side of the transparent adhesive layer away from the array substrate, a grooved area is formed in the region where the polarizing layer and the touch layer are opposite each other; the first black hot melt adhesive layer is deposited between the polarizing layer and the array substrate, comprising: The first black hot melt adhesive layer is applied to the grooved area by dripping or injecting.

2. The manufacturing method according to claim 1, characterized in that, After the step of forming the first black hot melt adhesive layer between the polarizing layer and the array substrate, the method further includes: A middle frame is provided on the side of the array substrate away from the light-emitting side; a first slotted area is formed between the middle frame and the cover plate; a second black hot melt adhesive layer is provided in the first slotted area.

3. The manufacturing method according to claim 2, characterized in that, After the step of setting the polarizing layer on the side of the transparent adhesive layer away from the array substrate, the method further includes: setting the cover plate on the side of the polarizing layer away from the array substrate.

4. The manufacturing method according to claim 2, characterized in that, The transparent adhesive layer and the first black hot melt adhesive layer are disposed in the same layer.

5. The manufacturing method according to claim 2, characterized in that, The orthographic projections of the middle frame and the cover plate on the middle frame coincide.

6. The manufacturing method according to claim 2, characterized in that, The second black hot melt adhesive layer is made of the same material as the first black hot melt adhesive layer.

7. A display module, characterized in that, The display module includes an array substrate having a display area and a non-display area surrounding the display area, a first adhesive layer, and a polarizing layer; The polarizing layer is disposed on one side of the array substrate; The first adhesive layer is disposed between the array substrate and the polarizing layer; wherein the first adhesive layer includes a transparent adhesive layer forming a transparent area and a first black hot melt adhesive layer surrounding the transparent area; Wherein, the projection of the transparent area on the array substrate covers the display area; the projection of the first black hot melt adhesive layer on the array substrate overlaps at least partially with the non-display area; the transparent adhesive layer is used to bond the polarizing layer and the array substrate, and the first black hot melt adhesive layer is prepared after the polarizing layer and the array substrate are bonded; The display module also includes: A touch layer disposed between the array substrate and the first adhesive layer; A second adhesive layer is disposed between the first adhesive layer and the touch layer, wherein the material of the second adhesive layer has a higher melting temperature than the first black hot melt adhesive layer has a liquid temperature. The area opposite to the polarizing layer and the touch layer forms a grooved area, and the first black hot melt adhesive layer is formed in the grooved area by dripping or injecting.

8. The display module according to claim 7, characterized in that, The first black hot melt adhesive layer includes a first side that is in contact with the transparent adhesive layer and a second side that is opposite to the first side, and the distance between the first side and the second side is in the range of 0.3mm to 0.6mm.

9. The display module according to claim 7, characterized in that, The display module further includes a middle frame; the middle frame is disposed on the side of the array substrate away from the first adhesive layer, and a second black hot melt adhesive layer is disposed on the middle frame.

10. The display module according to claim 9, characterized in that, The display module further includes a cover plate and a third adhesive layer, wherein the third adhesive layer is disposed on the side of the polarizing layer away from the array substrate, and the cover plate is disposed on the side of the third adhesive layer away from the array substrate.

11. The display module according to claim 10, characterized in that, A second black hot melt adhesive layer is provided between the middle frame and the cover plate.

12. The display module according to claim 11, characterized in that, The orthographic projection of the cover plate onto the middle frame coincides with the middle frame.

13. The display module according to claim 11, characterized in that, The second black hot melt adhesive layer is made of the same material as the first black hot melt adhesive layer.

14. The display module according to claim 7, characterized in that, The optical density value of the first black hot melt adhesive layer is in the range of 5 to 6.

15. The display module according to claim 7, characterized in that, The thickness of the first adhesive layer ranges from 0.5 mm to 0.6 mm.

16. A display device, characterized in that, The display device includes the display module as described in any one of claims 7 to 15.

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