Display module and display device

Abstract

This application provides a display module and a display device. The display module includes a display panel and a support layer. The display panel includes a display portion, a bent portion, and a terminal portion, with the bent portion connected to the display portion and the terminal portion respectively. The support layer is disposed between the display portion and the terminal portion, with the display portion and the terminal portion respectively connected to the support layer. In the direction from the display portion to the terminal portion, the thickness of the support layer on the side closer to the bent portion is greater than the thickness on the side farther from the bent portion. This display module can improve the support strength of the bent portion of the display panel and also reduce material and process costs.

Description

Technical Field

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

[0002] With the continuous development of display technology, display module manufacturing technology has also matured. Currently, mainstream display modules include organic light-emitting diode (OLED) display modules, liquid crystal display (LCD) display modules, and plasma display modules. However, with the increasing pursuit of display module performance, flexible display modules have emerged. Flexible display modules can now be mass-produced and provide reliable support for the development of foldable products.

[0003] To achieve narrow bezel displays, flexible display modules typically bend the bottom side of the display panel to the back of the display area. Because the display panel of a flexible module has relatively poor rigidity, a support layer is used to support the panel and fill the bending gaps with adhesive tape to prevent defects caused by panel collapse during manufacturing. However, this method of fixing and filling bending gaps by filling with organic film layers and adhesive layers can easily lead to poor screen rigidity and involves multiple bonding processes, increasing the risk of air bubbles and adhesive overflow. Summary of the Invention

[0004] This application provides a display module and a display device that can improve the support strength of the bent portion of the display panel and reduce material and manufacturing costs.

[0005] This application provides a display module, including:

[0006] The display panel includes a display part, a bending part, and a terminal part. The display part and the terminal part are disposed opposite to each other, and the bending part is connected to the display part and the terminal part respectively.

[0007] A support layer is disposed between the display portion and the terminal portion. The display portion and the terminal portion are respectively connected to two opposite surfaces of the support layer. In the direction from the display portion to the terminal portion, the thickness of the support layer at the end near the bend is greater than the thickness of the support layer at the end away from the bend.

[0008] In some embodiments, the support layer includes a main body portion and a boss portion, the main body portion being connected to the boss portion, the boss portion protruding from the side of the main body portion away from the display portion, and the boss portion corresponding to the terminal portion; the display portion being connected to the main body portion, and the terminal portion being connected to the boss portion.

[0009] In some embodiments, in the direction from the display portion to the terminal portion, the thickness of the boss portion is 1 to 3 times the thickness of the main body portion.

[0010] In some embodiments, the thickness of the main body portion is 100 μm to 200 μm in the direction from the display portion to the terminal portion.

[0011] In some embodiments, the support layer is made of stainless steel.

[0012] In some embodiments, the display module further includes a backplate layer and a first adhesive layer. The backplate layer is disposed between the support layer and the display portion, and the first adhesive layer is disposed between the display portion and the backplate layer for bonding the display portion and the backplate layer.

[0013] In some embodiments, the display module further includes a buffer layer disposed between the support layer and the backplate layer.

[0014] In some embodiments, the display module further includes a second adhesive layer disposed between the support layer and the terminal portion, the second adhesive layer being used to adhesive the support layer and the terminal portion.

[0015] In some embodiments, the projection of the second adhesive layer onto the terminal portion coincides with the terminal portion.

[0016] This application embodiment also provides a display device, including:

[0017] case;

[0018] The aforementioned display module is fixed to the housing.

[0019] The display module and display device provided in this application include a display panel and a support layer. The display panel includes a display portion, a bent portion, and a terminal portion, with the bent portion connected to the display portion and the terminal portion respectively. The support layer is disposed between the display portion and the terminal portion, with the display portion and the terminal portion respectively connected to the support layer. In the direction from the display portion to the terminal portion, the thickness of the support layer on the side closer to the bent portion is greater than the thickness on the side farther from the bent portion. It is understood that by increasing the thickness of the support layer on the side closer to the bent portion and reducing the multilayer organic film layers and adhesive layers used to fill the step difference between the support layer and the terminal portion, the support strength of the bent portion of the display panel can be improved, and material and process costs can be reduced. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of a display module in the related technology provided in the embodiments of this application.

[0022] Figure 2 This is a schematic diagram of a first structure of a display module provided in an embodiment of this application.

[0023] Figure 3 This is a schematic diagram of the support layer provided in an embodiment of this application.

[0024] Figure 4 This is a schematic diagram of a second structure of the display module provided in an embodiment of this application.

[0025] Figure 5 This is a schematic diagram of the first structure of the composite membrane provided in the embodiments of this application.

[0026] Figure 6 This is a schematic diagram of a third structure of the display module provided in an embodiment of this application.

[0027] Figure 7 This is a schematic diagram of a fourth structure of the display module provided in the embodiments of this application.

[0028] Figure 8 This is a schematic flowchart illustrating the method for fabricating a display module according to an embodiment of this application.

[0029] Figure 9 This is a schematic diagram of the manufacturing process of the display module provided in the embodiments of this application.

[0030] Figure 10 This is a schematic diagram of a second structure of the composite membrane provided in an embodiment of this application.

[0031] Figure 11 This is a schematic diagram of the first process flow for the support layer provided in an embodiment of this application.

[0032] Figure 12 This is a schematic diagram of a second process flow for the support layer provided in an embodiment of this application. Detailed Implementation

[0033] The technical solutions of the embodiments of this application 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 application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034] With the continuous development of display technology, display module manufacturing technology has also matured. Currently, mainstream display modules include organic light-emitting diode (OLED) display modules, liquid crystal display (LCD) display modules, and plasma display modules. However, with the increasing pursuit of display module performance, flexible display modules have emerged. Flexible display modules can now be mass-produced and provide reliable support for the development of foldable products.

[0035] To achieve narrow bezel displays, flexible display modules typically bend the lower side of the display panel to the back of the display area. Because the display panel of a flexible display module has relatively poor rigidity, a support layer is used to support the panel and filler tape is used to fix it and fill the bending gaps to prevent defects caused by panel collapse during manufacturing.

[0036] Please see Figure 1 , Figure 1 A schematic diagram of the structure of a display module in the related technology provided in the embodiments of this application.

[0037] In related technologies, the display module 10 includes a display panel 11 and a support layer 12. The display panel 11 includes a display portion 111, a bending portion 112, and a terminal portion 113, with the bending portion 112 connected to both the display portion 111 and the terminal portion 113. The support layer 12 is disposed between the display portion 111 and the terminal portion 113. In the direction W1 from the display portion 111 to the terminal portion 113, a first adhesive layer 13, a first organic substrate layer 14, a second adhesive layer 15, a second organic substrate layer 16, and a third adhesive layer 17 are stacked between the support layer 12 and the terminal portion 113. It can be seen that the aforementioned multiple adhesive layers and organic film layers are used to fix and fill the bending gap. However, this method of fixing and filling the bending gap by filling with organic film layers and adhesive layers can easily lead to poor screen rigidity, and the multiple bonding processes involved can easily result in risks such as bubbles and excess adhesive.

[0038] Therefore, this application proposes a display module that can improve the support strength of the bent portion of the display panel and reduce material and manufacturing costs. A detailed analysis follows with reference to the accompanying drawings.

[0039] Please see Figure 2 , Figure 2 This is a schematic diagram of a first structure of a display module provided in an embodiment of this application.

[0040] The display module 20 includes a display panel 21 and a support layer 22. The display panel 21 includes a display portion 211, a bent portion 212, and a terminal portion 213, with the bent portion 212 connected to both the display portion 211 and the terminal portion 213. The support layer 22 is disposed between the display portion 211 and the terminal portion 213, with both the display portion 211 and the terminal portion 213 connected to the support layer 22. In the direction from the display portion 211 to the terminal portion 213, the thickness of the support layer 22 on the side closer to the bent portion 212 is greater than the thickness of the support layer 22 on the side farther from the bent portion 212.

[0041] The display section 211 of the display panel 21 is used to display images. The terminal section 213 of the display panel 21 is provided with integrated circuits, flexible circuit boards, etc. The terminal section 213 is bent to the non-light-emitting side of the display panel 21 through the bending section 212 to achieve a borderless or narrow bezel design.

[0042] The display panel 21 includes a substrate, a TFT driving array, and an OLED light-emitting device (not shown in the figure). The OLED light-emitting device includes a metal cathode, an organic light-emitting layer, an anode, etc.

[0043] A support layer 22 is located between the display section 211 and the terminal section 213, and the support layer 22 has the functions of support, buffering, and heat dissipation. The support layer 22 is spaced apart from the bending section 212, that is, the bending section 212 surrounds one end of the support layer 22. The material of the support layer 22 is metal, such as stainless steel (SUS).

[0044] In the direction W2 from the display section 211 to the terminal section 213, the thickness of the support layer 22 at the end near the bend 212 is greater than the thickness of the support layer 22 at the end away from the bend 212. It can be understood that the thickness of the support layer 22 can gradually decrease or decrease in a stepwise manner in the direction from near the bend 212 to away from the bend 212.

[0045] When the thickness of the support layer 22 gradually decreases, that is, the side of the support layer 22 away from the display part 211 forms a slope, which can accommodate terminal parts 213 with different widths.

[0046] Please see Figure 3 , Figure 3This is a schematic diagram of the support layer provided in an embodiment of this application. When the thickness of the support layer 22 decreases in a stepped manner, that is, the support layer 22 includes a main body portion 221 and a boss portion 222. The main body portion 221 is connected to the boss portion 222. The boss portion 222 protrudes from the side of the main body portion 221 away from the display portion 211, and the side of the main body portion 221 away from the display portion 211 is parallel to the side of the boss portion 222 away from the display portion 211. The orthographic projection area of ​​the boss portion 222 on the main body portion 221 coincides with the orthographic projection area of ​​the terminal portion 213 on the main body portion 221. The boss portion 222 is connected to the terminal portion 213 for fixing the terminal portion 213. Understandably, when the thickness of the support layer 22 decreases in a stepped manner, the side of the boss 222 away from the display section 211 is parallel to the terminal section 213 of the bent display panel 21 before the boss 222 is connected to the terminal section, so that the connection between the terminal section 213 and the boss 222 is more secure.

[0047] In the direction W2 from the display portion 211 to the terminal portion 213, the thickness of the support layer 22 can range from 200 μm to 800 μm. The thickness of the support layer 22 on the side near the bending portion 212 is a maximum of 800 μm.

[0048] Therefore, by increasing the thickness of the support layer 22 on the side near the bending portion 212 and reducing the multilayer organic film layer and adhesive layer used to fill the step difference between the support layer 22 and the terminal portion 213, the support strength of the bending portion 212 of the display panel 21 can be improved, and the material and process costs can also be reduced.

[0049] As described above, in some embodiments, the support layer 22 includes a main body portion 221 and a boss portion 222. The main body portion 221 is connected to the boss portion 222, and the boss portion 222 protrudes from the side of the main body portion 221 away from the display portion 211. The boss portion 222 corresponds to the terminal portion 213. The display portion 211 is connected to the main body portion 221, and the terminal portion 213 is connected to the boss portion 222.

[0050] The support layer 22 is L-shaped. The display portion 211 of the display panel 21 is connected to the side of the main body 221 away from the protrusion portion 222, and the terminal portion 213 of the display panel 21 is connected to the side of the protrusion portion 222 away from the main body 221. In the direction from the display portion 211 to the terminal portion 213, the thickness of both the main body 221 and the protrusion portion 222 is the same. That is, the side of the main body 221 away from the protrusion portion 222 is parallel to the side of the protrusion portion 222 away from the main body 221. Before the protrusion portion 222 is connected to the terminal portion, the side of the protrusion portion 222 away from the display portion 211 is parallel to the terminal portion 213 of the bent display panel 21, thereby increasing the contact area between the terminal portion 213 and the protrusion portion 222, making connection easier and more secure.

[0051] The thickness of the boss portion 222 can replace the multiple adhesive layers and multiple organic film layers (first adhesive layer, first organic substrate layer, second adhesive layer, second organic substrate layer and third adhesive layer) stacked in the related technology, and the boss portion 222 can fill the bending step difference.

[0052] In some embodiments, in the direction W2 from the display portion 211 to the terminal portion 213, the thickness of the boss portion 222 is 1 to 3 times the thickness of the main body portion 221. The boss portion 222 can replace the multilayer organic film layer and adhesive layer in the related art, thereby supporting the terminal portion 213 so that the terminal portion 213 can be approximately parallel to the display portion 211.

[0053] In the direction W2 from the display portion 211 to the terminal portion 213, the thickness of the main body portion 221 is 100μm to 200μm; correspondingly, the thickness of the boss portion 222 can be 100μm to 600μm. For example, the thickness of the main body portion 221 is 150μm, and the thickness of the boss portion 222 is 300μm. It is understood that when the thicknesses of the terminal portion 213 and the boss portion 222 are as described above, the boss portion 222 can replace the multilayer organic film layer and adhesive layer in the related technology, and the support layer 22 formed by the boss portion 222 and the main body portion 221 also has sufficient strength to support the display panel 21.

[0054] Therefore, the boss portion 222 in this embodiment can not only improve the support strength of the bent portion 212 of the display panel 21, but also reduce material and process costs. In addition, since the side of the boss portion 222 away from the display portion 211 is parallel to the terminal portion 213 of the bent display panel 21, the connection between the terminal portion 213 and the boss portion 222 is more secure.

[0055] In some embodiments, please refer to Figure 4 , Figure 4This is a schematic diagram of a second structure of the display module provided in an embodiment of this application.

[0056] The display module 20 also includes a back panel layer 26, which is disposed between the support layer 22 and the display section 211. A first adhesive layer 23 is disposed between the support layer 22 and the display section 211, and between the display section 211 and the back panel layer 26. The first adhesive layer 23 is used to bond the display section 211 and the back panel layer 26. The material of the back panel layer 26 can be polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl compounds, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), and combinations thereof. The back panel layer 26 provides support and protection for the display panel 21, preventing wrinkles in the display section 211.

[0057] In some embodiments, the display module 20 further includes a second adhesive layer 24, which is disposed between the support layer 22 and the terminal portion 213, and is used to adhere the support layer 22 and the terminal portion 213.

[0058] In order to make the terminal portion 213 adhere to the support layer 22 more firmly, the projection of the second adhesive layer 24 on the terminal portion 213 coincides with the terminal portion 213. It can be understood that the second adhesive layer 24 completely covers the side of the terminal portion 213 that is adhered to the support layer 22, so that the adhesion area between the terminal portion 213 and the support layer 22 is maximized, and thus the terminal portion 213 can be more firmly adhered to the support layer 22.

[0059] The first adhesive layer 23 is made of pressure-sensitive adhesive (PSA), and the second adhesive layer 24 can also be made of PSA. PSA is a type of adhesive that is sensitive to pressure. The PSA can be made of acrylic, silicone, or other materials.

[0060] In this embodiment, a protective film 28 is provided on one side of the second adhesive layer 24. The material of the protective film 28 may be, but is not limited to, polyethylene terephthalate (PET). The protective film 28 is rigid to provide support and protect the second adhesive layer 24. When the second adhesive layer 24 is used to bond the support layer 22 and the terminal portion 213, the protective film 28 can be removed.

[0061] For details, please refer to Figure 5 , Figure 5This is a schematic diagram of a first structure of the composite film provided in an embodiment of this application. In the manufacturing process of the display module 20, after the display panel 21 is laser-peeled from the glass substrate, a composite film 2 is provided. The composite film 2 includes a first release film 27, a first adhesive layer 23, a second adhesive layer 24, and a protective film 28. The first release film 27 is divided into a first region 271, a blank region 272, and a second region 273. The first region 271 corresponds to the display portion 211 of the display panel 21, the blank region 272 corresponds to the bent portion 212 of the display panel 21, and the second region 273 corresponds to the terminal portion 213 of the display panel 21. The first adhesive layer 23 is disposed in the first region 271. The second adhesive layer 24 is disposed in the second region 273, and a second release film 29 is disposed on the second adhesive layer 24. The protective film 28 covers at least the first adhesive layer 23 and the second release film 29. The composite film 2, after the first release film 27 is removed, is adhered to the display panel 21, so that the first adhesive layer 23 adheres to the display portion 211 of the display panel 21, and the second adhesive layer 24 adheres to the terminal portion 213 of the display panel 21. A protective film 28 is located on the side of the first adhesive layer 23 and the second adhesive layer 24 away from the display panel 21. The protective film 28 ensures the rigidity of the first adhesive layer 23 and the second adhesive layer 24 to support the display panel 21. The protective film 28 is then removed, allowing the support layer 22 to directly adhere to the first adhesive layer 23. The bending portion 212 of the display panel 21 is then bent, so that the terminal portion 213 is positioned opposite the display portion 211. The support layer 22 is positioned between the terminal portion 213 and the display portion 211. Finally, the second release film 29 is removed, allowing the terminal portion 213 of the display panel 21 to adhere to the support layer 22 via the second adhesive layer 24. Therefore, in this embodiment, the first release film 27, the second release film 29, and the protective film 28 are not reflected in the final product of the display module 20.

[0062] It is understood that, compared to the multiple adhesive layers and multiple organic film layers (first adhesive layer, first organic substrate layer, second adhesive layer, second organic substrate layer and third adhesive layer) stacked in related technologies, the boss portion 222 in this embodiment is equivalent to the first adhesive layer, the first organic substrate layer, the second adhesive layer and the second organic substrate layer; the second adhesive layer 24 in this embodiment is equivalent to the third adhesive layer in the prior art, thereby reducing the number of the first adhesive layer, the first organic substrate layer, the second adhesive layer and the second organic substrate layer, and also reducing the bonding process between the first organic substrate layer and the support layer 22, and between the first organic substrate layer and the second organic substrate layer, thereby reducing the cost of materials and processes.

[0063] In some embodiments, please refer to Figure 6 , Figure 6This is a schematic diagram of a third structure of the display module provided in this application embodiment. The display module 20 further includes a buffer layer 25, which is disposed between the support layer 22 and the back panel layer 26. The buffer layer 25 can be foam, cotton foam, etc. The buffer layer 25 can play a buffering role. The buffer layer 25 is disposed on the side of the display panel 21 near the support layer 22, and the buffer layer 25 is disposed corresponding to the display part 211, that is, the orthographic projection area of ​​the buffer layer 25 coincides with the orthographic projection area of ​​the display part 211.

[0064] Additionally, please see Figure 7 , Figure 7 This is a schematic diagram of a fourth structure of the display module provided in the embodiments of this application. The display device may further include a polarizer 30 (POL), a first optically clear adhesive layer 40 (OCA), an ultra-thin flexible glass 50 (UTG), a second optically clear adhesive layer 60, and a protective window 70 (PW). Specifically, the polarizer 30, the first optically clear adhesive layer 40, the ultra-thin flexible glass 50, the second optically clear adhesive layer 60, and the protective window 70 are sequentially stacked on the side of the display panel 21 away from the support layer 22. That is, the polarizer 30 is disposed on the side of the display panel 21 away from the support layer 22, the first optically clear adhesive layer 40 is disposed on the polarizer 30, the ultra-thin flexible glass 50 is disposed on the first optically clear adhesive layer 40, the second optically clear adhesive layer 60 is disposed on the ultra-thin flexible glass 50, and the protective window 70 is disposed on the second optically clear adhesive layer 60. In other words, the polarizer 30, the ultra-thin flexible glass 50, and the protective window 70 are bonded together by the first optical adhesive layer 40 and the second optical adhesive layer 60.

[0065] Please see Figure 8 , Figure 8 This is a schematic flowchart illustrating the fabrication method of the display module provided in this application embodiment. This application embodiment also provides a method for fabricating a display module 20, which includes the following steps.

[0066] S100, providing a support layer 22.

[0067] S200. A display panel 21 is provided. The display panel 21 includes a display part 211, a bending part 212 and a terminal part 213. The display part 211 and the terminal part 213 are disposed opposite to each other, and the bending part 212 is connected to the display part 211 and the terminal part 213 respectively.

[0068] S300, The support layer 22 is disposed between the display section 211 and the terminal section 213.

[0069] S400, the display section 211 and the terminal section 213 are respectively connected to the support layer 22, and the display section 211 and the terminal section 213 are respectively connected to two opposite surfaces of the support layer 22.

[0070] In the direction from the display section 211 to the terminal section 213, the thickness of the support layer 22 at the end near the bending section 212 is greater than the thickness of the support layer 22 at the end away from the bending section 212.

[0071] The display section 211 of the display panel 21 is used to display images. The terminal section 213 of the display panel 21 is provided with integrated circuits, flexible circuit boards, etc. The terminal section 213 is bent to the non-light-emitting side of the display panel 21 through the bending section 212 to achieve a borderless or narrow bezel design.

[0072] The display panel 21 includes a substrate, a TFT driving array, and an OLED light-emitting device (not shown in the figure). The OLED light-emitting device includes a metal cathode, an organic light-emitting layer, an anode, etc.

[0073] A support layer 22 is located between the display section 211 and the terminal section 213, and the support layer 22 has the functions of support, buffering, and heat dissipation. The support layer 22 is spaced apart from the bending section 212, that is, the bending section 212 surrounds one end of the support layer 22. The material of the support layer 22 is metal, such as stainless steel (SUS).

[0074] In the direction from the display portion 211 to the terminal portion 213, the thickness of the support layer 22 at the end near the bend portion 212 is greater than the thickness of the support layer 22 at the end away from the bend portion 212. It can be understood that the thickness of the support layer 22 can gradually decrease or decrease in a stepwise manner in the direction from near the bend portion 212 to away from the bend portion 212.

[0075] When the thickness of the support layer 22 gradually decreases, that is, the side of the support layer 22 away from the display part 211 forms a slope, which can accommodate terminal parts 213 with different widths.

[0076] When the thickness of the support layer 22 decreases in a stepped manner, that is, when the support layer 22 includes a main body portion 221 and a boss portion 222, the main body portion 221 is connected to the boss portion 222, and the boss portion 222 protrudes from the side of the main body portion 221 away from the display portion 211. The side of the main body portion 221 away from the display portion 211 is parallel to the side of the boss portion 222 away from the display portion 211. The orthographic projection area of ​​the boss portion 222 on the main body portion 221 coincides with the orthographic projection area of ​​the terminal portion 213 on the main body portion 221. The boss portion 222 is connected to the terminal portion 213 for fixing the terminal portion 213. Understandably, when the thickness of the support layer 22 decreases in a stepped manner, the side of the boss 222 away from the display section 211 is parallel to the terminal section 213 of the bent display panel 21 before the boss 222 is connected to the terminal section, so that the connection between the terminal section 213 and the boss 222 is more secure.

[0077] Therefore, by increasing the thickness of the support layer 22 on the side near the bending portion 212 and reducing the multilayer organic film layer and adhesive layer used to fill the step difference between the support layer 22 and the terminal portion 213, the support strength of the bending portion 212 of the display panel 21 can be improved, and the material and process costs can also be reduced.

[0078] In some embodiments, please refer to Figure 9 , Figure 9 This is a schematic diagram of the manufacturing process of the display module provided in the embodiments of this application. The step of providing a display panel 21 includes: providing a panel body; dividing the panel body into a display portion 211, a bending portion, and a terminal portion 213 connected in sequence; providing a first adhesive layer 23 on the display portion 211 of the panel body; providing a second adhesive layer 24 on the terminal portion 213 of the panel body; and connecting the display portion 211 and the terminal portion 213 to the support layer 22 respectively. This step includes: using the first adhesive layer 23 to adhere the display portion 211 to the support layer 22; bending the bending portion to form a bending portion 212; and then using the second adhesive layer 24 to adhere the terminal portion 213 to the support layer 22.

[0079] The first adhesive layer 23 is made of pressure-sensitive adhesive (PSA), and the second adhesive layer 24 can also be made of pressure-sensitive adhesive. Pressure-sensitive adhesive is a type of adhesive that is sensitive to pressure. The pressure-sensitive adhesive can be made of acrylic, silicone, or other materials.

[0080] More specifically, the first adhesive layer 23 is disposed between the main body portion 221 and the display portion 211, and the first adhesive layer 23 is used to bond the main body portion 221 and the display portion 211; the second adhesive layer 24 is disposed between the boss portion 222 and the terminal portion 213, and the second adhesive layer 24 is used to bond the boss portion 222 and the terminal portion 213.

[0081] It is understood that, compared to the multiple adhesive layers and multiple organic film layers (first adhesive layer, first organic substrate layer, second adhesive layer, second organic substrate layer and third adhesive layer) stacked in related technologies, the boss portion 222 in this embodiment is equivalent to the first adhesive layer, the first organic substrate layer, the second adhesive layer and the second organic substrate layer; the second adhesive layer 24 in this embodiment is equivalent to the third adhesive layer in the prior art, thereby reducing the number of the first adhesive layer, the first organic substrate layer, the second adhesive layer and the second organic substrate layer, and also reducing the bonding process between the first organic substrate layer and the support layer 22, and between the first organic substrate layer and the second organic substrate layer, thereby reducing the cost of materials and processes.

[0082] In some cases, please refer to [the relevant documentation]. Figure 5 In the manufacturing process of the display module 20, after the display panel 21 is laser-peeled from the glass substrate, a composite film 2 is provided. The composite film 2 includes a first release film 27, a first adhesive layer 23, a second adhesive layer 24, and a protective film 28. The first release film 27 is divided into a first region 271, a blank region 272, and a second region 273. The first region 271 corresponds to the display portion 211 of the display panel 21, the blank region 272 corresponds to the bent portion 212 of the display panel 21, and the second region 273 corresponds to the terminal portion 213 of the display panel 21. The first adhesive layer 23 is disposed in the first region 271. The second adhesive layer 24 is disposed in the second region 273, and a second release film 29 is disposed on the second adhesive layer 24. The protective film 28 covers at least the first adhesive layer 23 and the second release film 29. The composite film 2, after the first release film 27 is removed, is adhered to the display panel 21, so that the first adhesive layer 23 adheres to the display portion 211 of the display panel 21, and the second adhesive layer 24 adheres to the terminal portion 213 of the display panel 21. A protective film 28 is located on the side of the first adhesive layer 23 and the second adhesive layer 24 away from the display panel 21. The protective film 28 ensures the rigidity of the first adhesive layer 23 and the second adhesive layer 24 to support the display panel 21. The protective film 28 is then removed, allowing the support layer 22 to directly adhere to the first adhesive layer 23. The bending portion 212 of the display panel 21 is then bent, so that the terminal portion 213 is positioned opposite the display portion 211. The support layer 22 is positioned between the terminal portion 213 and the display portion 211. Finally, the second release film 29 is removed, allowing the terminal portion 213 of the display panel 21 to adhere to the support layer 22 via the second adhesive layer 24. Therefore, in this embodiment, the first release film 27, the second release film 29, and the protective film 28 are not reflected in the final product of the display module 20.

[0083] In other cases, please refer to Figure 10 , Figure 10This is a schematic diagram of a second structure of the composite film provided in an embodiment of this application. The display module 20 also includes a backsheet layer 26, which is disposed between the support layer 22 and the first adhesive layer 23. The backsheet layer 26 includes polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl compounds, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), and combinations thereof. The backsheet layer 26 provides support and protection for the display panel 21. It is understood that the backsheet layer 26 can be part of the composite film 2. Specifically, in the manufacturing process of the display module 20, after the display panel 21 is laser-peeled from the glass substrate, a composite film 2 is provided. This composite film 2 includes a first release film 27, a first adhesive layer 23, a second adhesive layer 24, a protective film 28, and a backsheet layer 26. The first release film 27 is divided into a first region 271, a blank region 272, and a second region 273. The first region 271 corresponds to the display portion 211 of the display panel 21, the blank region 272 corresponds to the bent portion 212 of the display panel 21, and the second region 273 corresponds to the terminal portion 213 of the display panel 21. The first adhesive layer 23 is disposed in the first region 271. The second adhesive layer 24 is disposed in the second region 273. The backsheet layer 26 is disposed on the first adhesive layer 23, and the second release film 29 is disposed on the second adhesive layer 24. The protective film 28 covers at least the backsheet layer 26 and the second release film 29. The composite film 2, after the first release film 27 is removed, is adhered to the display panel 21, so that the first adhesive layer 23 adheres to the display portion 211 of the display panel 21, and the second adhesive layer 24 adheres to the terminal portion 213 of the display panel 21. A protective film 28 is located on the side of the first adhesive layer 23 and the second adhesive layer 24 away from the display panel 21. The protective film 28 ensures the rigidity of the first adhesive layer 23 and the second adhesive layer 24 to support the display panel 21. The protective film 28 is then removed, allowing the support layer 22, which has a buffer layer 25, to connect with the back panel layer 26. The bend 212 of the display panel 21 is then bent, so that the terminal portion 213 is positioned opposite the display portion 211. The support layer 22 is positioned between the terminal portion 213 and the display portion 211. Finally, the second release film 29 is removed, allowing the terminal portion 213 of the display panel 21 to adhere to the support layer 22 via the second adhesive layer 24. Therefore, in this embodiment, the first release film 27, the second release film 29, and the protective film 28 are not reflected in the final product of the display module 20.

[0084] In some embodiments, please refer to Figure 11 , Figure 11This is a schematic diagram of a first process flow for a support layer provided in an embodiment of this application. The step of providing a support layer 22 includes: providing a first substrate 3; etching the first substrate 3 to form a main body portion 221 and a boss portion 222, wherein the main body portion 221 and the boss portion 222 are connected, the boss portion 222 protrudes from one side of the main body portion 221, and the boss portion 222 is disposed at one end of the main body portion 221.

[0085] In the step of setting the support layer 22 between the display part 211 and the terminal part 213, the following are included: the boss part 222 protrudes from the side of the main body part 221 away from the display part 211, and the boss part 222 is disposed at the end of the main body part 221 near the bending part 212; the display part 211 is connected to the main body part 221, and the terminal part 213 is connected to the boss part 222.

[0086] In some embodiments, please refer to Figure 12 , Figure 12 This is a schematic diagram of a second process flow for the support layer provided in an embodiment of this application. The step of providing a support layer 22 includes: providing a second substrate 4 and a third substrate 5; welding the third substrate 5 onto the second substrate 4 to form a main body portion 221 and a boss portion 222, with the main body portion 221 connected to the boss portion 222, the boss portion 222 protruding from one side of the main body portion 221, and the boss portion 222 disposed at one end of the main body portion 221; and disposing of the support layer 22 between the display portion 211 and the terminal portion 213, including: the boss portion 222 protruding from the side of the main body portion 221 away from the display portion 211, and the boss portion 222 disposed at one end of the main body portion 221 near the bent portion 212; the display portion 211 connected to the main body portion 221, and the terminal portion 213 connected to the boss portion 222.

[0087] The support layer 22 is L-shaped. The display portion 211 of the display panel 21 is connected to the side of the main body 221 away from the boss portion 222, and the terminal portion 213 of the display panel 21 is connected to the side of the boss portion 222 away from the main body 221. In the direction from the display portion 211 to the terminal portion 213, the thickness of both the main body 221 and the boss portion 222 is the same. That is, the side of the main body 221 away from the boss portion 222 is parallel to the side of the boss portion 222 away from the main body 221. Before the boss portion 222 is connected to the terminal portion, the side of the boss portion 222 away from the display portion 211 is parallel to the terminal portion 213 of the bent display panel 21, so that the connection between the terminal portion 213 and the boss portion 222 is more secure.

[0088] The thickness of the boss portion 222 can replace the multiple adhesive layers and multiple organic film layers (first adhesive layer, first organic substrate layer, second adhesive layer, second organic substrate layer and third adhesive layer) stacked in the related technology, and the boss portion 222 can fill the bending step difference.

[0089] Therefore, the boss portion 222 in this embodiment can not only improve the support strength of the bent portion 212 of the display panel 21, but also reduce material and process costs. In addition, since the side of the boss portion 222 away from the display portion 211 is parallel to the terminal portion 213 of the bent display panel 21, the connection between the terminal portion 213 and the boss portion 222 is more secure.

[0090] In some embodiments, the support layer 22 is metal, and after providing the support layer 22, an antistatic coating is applied to the surface of the support layer 22. It is understood that by applying an antistatic coating to the support layer 22, the impact of static electricity on the display module 20 can be reduced.

[0091] This application also provides a display device, which includes a housing and the aforementioned display module 20, the display module 20 being fixed to the housing. The housing can cover or partially cover the display module 20, thereby protecting the display module 20 from being touched and from dust.

[0092] This application provides a display module 20, its manufacturing method, and a display device. The display module 20 includes a display panel 21 and a support layer 22. The display panel 21 includes a display portion 211, a bent portion 212, and a terminal portion 213. The bent portion 212 is connected to the display portion 211 and the terminal portion 213, respectively. The support layer 22 is disposed between the display portion 211 and the terminal portion 213, and the display portion 211 and the terminal portion 213 are connected to the support layer 22, respectively. In the direction from the display portion 211 to the terminal portion 213, the thickness of the support layer 22 on the side near the bent portion 212 is greater than the thickness of the support layer 22 on the side away from the bent portion 212. It is understood that by increasing the thickness of the support layer 22 on the side near the bent portion 212, and reducing the multilayer organic film layer and adhesive layer used to fill the step difference between the support layer 22 and the terminal portion 213, the support strength of the bent portion 212 of the display panel 21 can be improved, and the material and process costs can be reduced.

[0093] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0094] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0095] The display module and display device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display module, characterized in that, include: The display panel includes a display part, a bending part, and a terminal part. The display part and the terminal part are disposed opposite to each other, and the bending part is connected to the display part and the terminal part respectively. A support layer is disposed between the display unit and the terminal unit, wherein the display unit and the terminal unit are respectively connected to two opposite surfaces of the support layer; the support layer is made of a single metal material, and includes a main body and a boss portion, the main body and the boss portion being fixedly connected as an integral structure, the boss portion protruding from the side of the main body away from the display unit, the boss portion corresponding to the terminal unit, and the orthographic projection area of ​​the boss portion on the main body coincides with the orthographic projection area of ​​the terminal unit on the main body; In the direction from the display portion to the terminal portion, the thickness of the support layer at the end near the bend is greater than the thickness of the support layer at the end away from the bend.

2. The display module according to claim 1, characterized in that, The display section is connected to the main body section, and the terminal section is connected to the boss section.

3. The display module according to claim 2, characterized in that, In the direction from the display portion to the terminal portion, the thickness of the boss portion is 1 to 3 times the thickness of the main body portion.

4. The display module according to claim 3, characterized in that, In the direction from the display portion to the terminal portion, the thickness of the main body portion is 100 μm to 200 μm.

5. The display module according to any one of claims 1 to 4, characterized in that, The support layer is made of stainless steel.

6. The display module according to any one of claims 1 to 4, characterized in that, It also includes a back panel layer and a first adhesive layer. The back panel layer is disposed between the support layer and the display unit, and the first adhesive layer is disposed between the display unit and the back panel layer for bonding the display unit and the back panel layer.

7. The display module according to claim 6, characterized in that, It also includes a buffer layer disposed between the support layer and the backsheet layer.

8. The display module according to any one of claims 1 to 4, characterized in that, It also includes a second adhesive layer, which is disposed between the support layer and the terminal portion, and is used to adhesive the support layer and the terminal portion.

9. The display module according to claim 8, characterized in that, The projection of the second adhesive layer onto the terminal portion coincides with the terminal portion.

10. A display device, characterized in that, include: case; The display module according to any one of claims 1 to 9, wherein the display module is fixed to the housing.

Images