Display module and electronic equipment

Abstract

The utility model discloses a display module and electronic equipment, and the display module comprises a screen body, a plurality of functional layers, a first protective glue layer and a second protective glue layer. The screen body comprises a screen display control panel, and the screen display control panel comprises a bending part. The multiple functional layers are connected to the surface of the screen display control panel in a stacked mode in the thickness direction of the display module. The first protective glue layer is connected to the surface of the bending part. The second protective glue layer is connected to the first protective glue layer and the functional layer and covers the surface, located between the first protective glue layer and the functional layer, of the screen display control panel. According to the display module, the exposed part, located between the first protective glue layer and the functional layer, of the screen display control panel is covered with the second protective glue layer, the anti-static capacity of the display module can be remarkably improved, and static electricity larger than 12 KV can be resisted; therefore, it can be ensured that static electricity does not break down the screen display control panel in the area, located between the functional layer and the first protective glue layer, of the screen display control panel.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and specifically to a display module and an electronic device. Background Art

[0002] The display module of a folding machine usually includes a control panel and a multi-layer film layer. The multi-layer film layer is stacked on the control panel, and at least some of the film layers can realize different functions. When the folding machine is folded or unfolded, the film layer will be subjected to a certain squeezing force or pulling force. The film layers are offset from each other to prevent the film layer from deforming when subjected to force. Therefore, a certain amount of space is usually reserved in the direction of the mutual offset between the film layers, but this will cause the space corresponding to the reserved space on the control panel to not be covered by the insulating part, which is easy to be broken down by static electricity. Utility Model Content

[0003] In view of this, the present application provides a display module and an electronic device to solve the problem in the prior art that the control panel is easily broken down by static electricity at the part not covered by the film layer.

[0004] In a first aspect, the present application provides a display module, which includes:

[0005] A screen body, wherein the screen body comprises a screen display control panel, and the screen display control panel comprises a bending portion;

[0006] A plurality of functional layers, wherein the plurality of functional layers are stacked and connected to the surface of the screen display control panel in the thickness direction of the display module;

[0007] A first protective adhesive layer, wherein the first protective adhesive layer is connected to a surface of the bending portion;

[0008] A second protective adhesive layer, wherein the second protective adhesive layer is respectively connected to the first protective adhesive layer and the functional layer, and covers a surface of the screen display control panel between the first protective adhesive layer and the functional layer.

[0009] In the present application, by covering the exposed part of the screen display control panel between the first protective rubber layer and the functional layer with a second protective rubber layer, the anti-static ability of the display module can be significantly improved, and it can resist static electricity greater than 12KV, thereby ensuring that static electricity will not break through the screen display control panel in the area between the functional layer and the first protective rubber layer on the screen display control panel.

[0010] In a possible design, the second protective adhesive layer overlaps the functional layer along the thickness direction of the display module. The edge portion of the second protective adhesive layer can overlap with the corresponding functional layer, that is, in the thickness direction of the display module, the second protective adhesive layer can partially overlap with the projection of the corresponding functional layer, thereby ensuring that the second protective adhesive layer can reliably cover the area between the first protective adhesive layer and the functional layer on the screen display control panel, and ensuring the reliability of anti-static effect achieved by the second protective adhesive layer. At the same time, by overlapping the second protective adhesive layer with the corresponding functional layer in the thickness direction of the display module, a certain gap can be created between the second protective adhesive layer and the corresponding functional layer in the direction perpendicular to the thickness of the display module, so that the corresponding functional layer can have a certain space in the direction perpendicular to the thickness of the display module, which is conducive to the displacement of the functional layer to absorb the deformation of the functional layer in switching between the folded state and the flattened state.

[0011] In one possible design, the multi-layer functional layer includes at least a polarizer layer and a first adhesive layer, and the first adhesive layer and the polarizer layer are stacked in sequence on the screen display control panel. The second protective adhesive layer is connected to the first adhesive layer and / or the polarizer layer. Among them, exemplarily, the second protective adhesive layer can be connected only to the first adhesive layer, that is, the thickness of the second protective adhesive layer is less than or equal to the thickness of the first adhesive layer, so that the overall thickness of the display module at the second protective adhesive layer can be reduced, which is conducive to reducing the resistance of the second protective adhesive layer to the movement of some functional layers. Exemplarily, the second protective adhesive layer can be connected to the first adhesive layer and the polarizer layer at the same time, that is, the second protective adhesive layer has a larger thickness at the connection position with the first adhesive layer and the polarizer layer, so as to ensure the reliability of the connection between the second protective adhesive layer and the first adhesive layer and the polarizer layer, and improve the structural strength.

[0012] In a possible design, the multi-layer functional layer includes at least a color filter layer and a protective layer, and the color filter layer and the protective layer are sequentially stacked on the screen display control panel. The second protective adhesive layer is connected to the color filter layer and / or the protective layer. Exemplarily, the second protective adhesive layer can be connected only to the color filter layer, that is, the thickness of the second protective adhesive layer is less than or equal to the thickness of the color filter layer, thereby reducing the overall thickness of the display module at the second protective adhesive layer, which is beneficial to reducing the resistance of the second protective adhesive layer to the movement of the kinetic layer. Exemplarily, the thickness of the second protective adhesive layer is less than or equal to the sum of the thicknesses of the color film layer and the protective layer, so that the second protective adhesive layer can be connected to the color film layer and the protective layer at the same time, wherein the thickness of the color film layer is relatively small, making it difficult to connect the second protective adhesive layer and the color film layer, while the protective layer located on the color film layer can have a greater thickness than the color film layer. That is to say, by connecting the second protective adhesive layer to the color film layer and the protective layer at the same time, the reliability of the connection between the second adhesive layer, the color film layer and the protective layer can be guaranteed, the structural strength can be improved, and there is no gap between the second protective adhesive layer, the color film layer and the protective layer, which can reliably improve the anti-static ability.

[0013] In a possible design, the first protective adhesive layer and the second protective adhesive layer are integrally formed. Exemplarily, adhesive can be dispensed on the bending portion of the screen display control panel and the area between the functional layer and the first protective adhesive layer on the screen display control panel through a glue dispensing process. In this embodiment, there is no clear boundary between the first protective adhesive layer and the second protective adhesive layer. MCL glue can be applied to the corresponding area on the screen display control panel in a single glue dispensing process, and the amount and range of the glue applied can be controlled, and the adhesive layer can be formed through a UV curing process, which facilitates process processing. At the same time, it can ensure that there is no matching gap between the first protective adhesive layer and the second protective adhesive layer, which is conducive to ensuring the antistatic effect.

[0014] In one possible design, the first protective rubber layer is a module protective rubber layer, and the second protective rubber layer is an acrylate layer. That is to say, the first protective rubber layer and the second protective rubber layer can be rubber layers of different materials, and the first protective rubber layer and the second protective rubber layer can be processed and formed separately. In one embodiment, MCL glue can be first applied on the bending portion of the screen display control panel, and cured to form a first protective rubber layer. By controlling the amount of MCL glue applied, the range of glue application, the UV curing process, etc., the first protective rubber layer can be covered on the surface of the bending portion, and a certain space is reserved between the first protective rubber layer and the functional layer. Then, acrylate can be applied in the reserved space to form a second protective rubber layer. Thus, by independently setting the second protective rubber layer, the connection accuracy between the second protective rubber layer and the functional layer can be more accurately controlled.

[0015] In one possible design, the second protective adhesive layer is formed on the screen display control panel by inkjet printing, so that the coating thickness of the second protective adhesive layer can be accurately controlled, so that the second protective adhesive layer can have a smaller thickness while improving the ability to resist static electricity, which is beneficial to reducing the resistance of the second protective adhesive layer to the movement of the functional layer.

[0016] In a possible design, the thickness of the second protective adhesive layer is 20-25 um. The second protective adhesive layer has a relatively small thickness, which is beneficial to reducing the resistance of the second protective adhesive to the movement of the functional layer.

[0017] In one possible design, the thickness of the second protective adhesive layer is less than or equal to the thickness of the first adhesive layer, that is, in a structure where the functional layer includes a polarizer layer, the second protective adhesive layer may only contact the first adhesive layer, but may not contact the polarizer layer, so that the second protective adhesive layer may have a smaller thickness to reduce the resistance to the movement of the functional layer. Alternatively, the thickness of the second protective adhesive layer is less than or equal to the sum of the thicknesses of the first adhesive layer and the polarizer layer, that is, the second protective adhesive layer may contact the first adhesive layer and the polarizer layer at the same time, so that the thickness of the second protective adhesive layer at the contact point with the first adhesive layer and the polarizer layer can be increased to improve the structural strength.

[0018] In one possible design, the thickness of the second protective adhesive layer is less than or equal to the thickness of the color film layer, thereby reducing the overall thickness of the display module at the second protective adhesive layer, which is beneficial to reducing the resistance of the second protective adhesive layer to the movement of the kinetic layer. Alternatively, the thickness of the second protective adhesive layer is less than or equal to the sum of the thicknesses of the color film layer and the protective layer, so that the second protective adhesive layer can be connected to the color film layer and the protective layer at the same time, wherein the thickness of the color film layer is relatively small, making it difficult to connect the second protective adhesive layer and the color film layer, and the protective layer located on the color film layer can have a greater thickness than the color film layer. In other words, by connecting the second protective adhesive layer to the color film layer and the protective layer at the same time, the reliability of the connection between the second adhesive layer, the color film layer and the protective layer can be ensured, the structural strength can be improved, and it can be ensured that there is no gap between the second protective adhesive layer and the color film layer and the protective layer, which can reliably improve the antistatic ability.

[0019] In a possible design, the protective layer includes a second adhesive layer and a polyester film layer, and the second adhesive layer and the polyester film layer are sequentially stacked on the color film layer. The thickness of the second protective adhesive layer is less than or equal to the sum of the thicknesses of the color film layer and the second adhesive layer, that is, the second protective adhesive layer can be in contact with the color film layer and the second adhesive layer at the same time, but not in contact with the polyester film layer, which is conducive to reducing the thickness of the second protective film layer while improving the connection strength of the second protective adhesive layer.

[0020] In a possible design, the screen display control panel also includes a straight portion, the straight portion is connected to the bent portion, a plurality of functional layers are stacked and connected to the surface of the straight portion in the thickness direction of the display module, and the second protective adhesive layer covers the surface of the straight portion between the first protective adhesive layer and the functional layer. Among them, the first protective adhesive layer can completely cover the bent portion, and the structural strength of the bent portion can be improved by the first protective adhesive layer, and the antistatic ability of the display module at the bent portion can be improved. The second protective adhesive layer can cover the straight portion, so as to facilitate precise control of the coating amount and coating range of the second protective adhesive layer, ensure reliable contact between the second protective adhesive layer and the corresponding functional layer, improve the antistatic ability, and ensure that the thickness of the second protective adhesive layer is within a reasonable thickness range, so that the second protective adhesive layer can both reliably contact with the corresponding functional layer and ensure the thin design of the display module.

[0021] In the second aspect, the present application further provides an electronic device, which includes the display module provided in the first aspect of the present application. The electronic device including the display module provided in the first aspect of the present application has similar technical effects as the aforementioned display module, which will not be described in detail here.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0025] Figure 2 A display module provided in an embodiment of the present application is Figure 1 Partial cross-sectional view at AA in the middle;

[0026] Figure 3 It is a schematic diagram of the structure of the exposed position on the screen display control panel;

[0027] Figure 4 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA in the middle;

[0028] Figure 5 A display module provided in another embodiment of the present application is Figure 1Partial cross-sectional view at AA in the middle;

[0029] Figure 6 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA in the middle;

[0030] Figure 7 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA in the middle;

[0031] Figure 8 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA in the middle;

[0032] Fig. 9 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA in the middle.

[0033] Reference numerals:

[0034] 1-Screen body;

[0035] 11-screen display control panel;

[0036] 111- bending portion;

[0037] 112-Straight part

[0038] 113-exposed position;

[0039] 2- Functional layer;

[0040] 21- first adhesive layer;

[0041] 22-Polarizer layer;

[0042] 23-color film layer;

[0043] 24- protective layer;

[0044] 241- second adhesive layer;

[0045] 242-polyester film layer;

[0046] 3- first protective rubber layer;

[0047] 4- second protective rubber layer;

[0048] 100-display module;

[0049] 200-edge;

[0050] Z-thickness direction. DETAILED DESCRIPTION

[0051] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0052] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0053] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0054] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0055] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] The display module of the folding machine usually includes a control panel and a multi-layer film layer, wherein the control panel can be integrated with a control circuit, an electrical component, etc., and can realize the control of different functions. The multi-layer film layer can be stacked on the control panel, and at least part of the film layer can realize different functions, for example, part of the film layer can realize polarization function, uniform light function, bonding function, etc. These film layers can be stacked on the control panel in the thickness direction of the control panel in a set order. Since the display module will cross the shaft and be connected to the middle frame on both sides of the shaft. When the folding machine is folded or unfolded, the film layer will be subjected to a certain extrusion force or pulling force. For example, when the folding machine is folded from a flat state to a folded state, the film layer will be subjected to a tensile force; when the folding machine is unfolded from a folded state to a flat state, the film layer will be subjected to an extrusion force. If the film layers cannot be displaced from each other, this extrusion force will cause part of the film layer to bulge away from the control panel, forming a wrinkled state. Therefore, it is necessary to absorb the deformation that may be generated when the film layer switches between different states by displacing each other between the film layers. However, in order to achieve the displacement of the film layer, it is usually necessary to reserve a certain space in the deformation direction of the film layer, but this will also cause the part of the control panel corresponding to the reserved space to not be covered by the insulating member and easily be broken down by static electricity.

[0057] The present application provides a display module, which can be applied to an electronic device. The electronic device can be a folding mobile phone, a straight mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form used by the electronic device. Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, Figure 1 The electronic device is shown as a foldable mobile phone for example only, and the following is only described by taking the electronic device as a foldable mobile phone as an example for example.

[0058] Figure 2 The display module provided in the embodiment of the present application is Figure 1 Partial cross-sectional view at AA, refer to Figure 2 The display module 100 includes a screen body 1, the screen body 1 includes a screen display control panel (Panel) 11, the screen display control panel 11 includes a bending portion 111, along the thickness direction of the display module 100, the portion of the screen display control panel 11 close to its edge can be bent from one side of the display module 100 to the other side, and the bending portion 111 can be formed at the bent portion. Figure 1 As shown, in the electronic device, the bent portion 111 is located at the edge 200 of the electronic device.

[0059] The multi-layer functional layer 2 is laminated and connected to the surface of the screen display control panel 11 in the thickness direction of the display module. Part of the functional layer 2 may have the same or different functions, for example, part of the functional layer may have a polarizing function, part of the functional layer may have a protective function, and part of the functional layer may have an adhesive function. Each functional layer may be laminated and connected to the screen display control panel in a set order.

[0060] Among them, the screen display control panel 11 can be covered by the functional layer 2 at the position where each functional layer 2 is set, which has a good effect of preventing electrostatic breakdown and has good structural strength. However, the bending portion 111 of the screen display control panel 11 is not covered by the functional layer 2, and the thickness of the display module at the bending portion 111 is only the thickness of the screen display control panel 11, which is generally above 0.03mm. The thickness is small and the strength is weak, and it is easy to be broken down by static electricity without the coverage of the insulating layer. Therefore, in this embodiment, a first protective adhesive layer 3 can be set on the surface of the bending portion 111, and the first protective adhesive layer 3 can cover the surface of the bending portion 111, so as to improve the structural strength of the display module at the bending portion 111. At the same time, the first protective adhesive layer 3 has insulating properties, which can improve the anti-static ability of the display module at the bending portion 111.

[0061] Figure 3 The structure diagram of the screen display control panel 11 having an exposed position 113, referring to Figure 3 Generally speaking, in order to enable the functional layer 2 to shift relative to each other when switching between the folded state and the flattened state to absorb the deformation, it is considered to reserve a certain space between the first protective rubber layer 3 and the functional layer 2. This causes the screen display control panel 11 to be exposed at the position corresponding to the space, that is, it is not covered by the film layer. The screen display control panel 11 can only rely on its own antistatic ability to resist static electricity at the exposed position 113. The antistatic ability is weak and can generally only resist static electricity below 6KV. If the static electricity is 8-10KV, the screen display control panel 11 is easily broken down at the exposed position 113.

[0062] To this end, in this embodiment, refer to Figure 2 , so that the second protective adhesive layer 4 is connected to the first protective adhesive layer 3 and the functional layer 2 respectively, and covers the surface of the screen display control panel 11 between the first protective adhesive layer 3 and the functional layer 2. Thus, the exposed position 113 of the screen display control panel 11 can be covered by the second protective adhesive layer 4. The second protective adhesive layer 4 is an insulating material with good anti-static breakdown capability and can resist static electricity greater than 12KV, thereby ensuring that static electricity will not break through the screen display control panel 11 in the area between the functional layer 2 and the first protective adhesive layer 3 on the screen display control panel 11.

[0063] In one embodiment, referring to Figure 2 , the screen display control panel 11 also includes a straight portion 112, which is a non-bending area outside the bending portion 111. The straight portion 112 is connected to the bending portion 111, and the multi-layer functional layer 2 can be stacked and connected to the surface of the straight portion 112 in the thickness direction Z of the display module, and the second protective adhesive layer 4 covers the surface of the straight portion 112 between the first protective adhesive layer 3 and the functional layer 2. Among them, the first protective adhesive layer 3 can completely cover the bending portion 111, and the structural strength of the bending portion 111 can be improved by the first protective adhesive layer 3, and the antistatic ability of the display module at the bending portion 111 can be improved. The second protective adhesive layer 4 can cover the straight portion 112, so as to facilitate precise control of the coating amount and coating range of the second protective adhesive layer 4, ensure reliable contact between the second protective adhesive layer 4 and the corresponding functional layer 2, enhance the anti-static ability, and at the same time ensure that the thickness of the second protective adhesive layer 4 is within a reasonable thickness range, so that the second protective adhesive layer 4 can both reliably contact with the corresponding functional layer 2 and ensure the thin design of the display module.

[0064] In one embodiment, referring to Figure 2 , the functional layer 2 may at least include a polarizer layer 22 and a first adhesive layer 21, the first adhesive layer 21 and the polarizer layer are stacked in sequence on the screen display control panel 11, that is, the polarizer layer 22 may be bonded to the screen display control panel 11 through the first adhesive layer 21. The polarizer layer 22 is used to change the direction of light and reduce the reflection of ambient light. The first adhesive layer 21 may be a pressure sensitive adhesive (PSA). The second protective adhesive layer 4 is connected to the first adhesive layer 21 and / or the polarizer layer 22. Exemplarily, Figure 4 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA, refer to Figure 4 , the second protective adhesive layer 4 can be connected only to the first adhesive layer 21, that is, the thickness of the second protective adhesive layer 4 is less than or equal to the thickness of the first adhesive layer 21, so that the overall thickness of the display module at the second protective adhesive layer 4 can be reduced, which is beneficial to reducing the resistance of the second protective adhesive layer 4 to the movement of part of the functional layer 2. For example, referring to Figure 2 The thickness of the second protective adhesive layer 4 can be less than or equal to the sum of the thicknesses of the first adhesive layer 21 and the polarizer layer 22. That is to say, the second protective adhesive layer 4 can be connected to the first adhesive layer 21 and the polarizer layer 22 at the same time. That is to say, the second protective adhesive layer 4 has a larger thickness at the connection position with the first adhesive layer 21 and the polarizer layer 22, thereby ensuring the reliability of the connection between the second protective adhesive layer 4 and the first adhesive layer 21 and the polarizer layer 22 and improving the structural strength.

[0065] In one embodiment, Figure 5 A display module provided in another embodiment of the present application is Figure 1Partial cross-sectional view at AA, refer to Figure 5 The multi-layer functional layer 2 may at least include a color filter layer 23 (color filter onencapsulation, COE) and a protective layer 24. The color filter layer 23 and the protective layer 24 are stacked in sequence on the screen display control panel 11, that is, a color filter layer 23 is provided on the screen display control panel 11, and a protective layer 24 is provided on the side of the color filter layer 23 away from the screen display control panel 11. The color filter layer 23 can filter out light of a specific color, which can improve the transmittance of light, effectively reduce power consumption, and also help to reduce the thickness of the display module. Among them, the second protective adhesive layer 4 is connected to the color filter layer 23 and / or the protective layer 24. Refer to Figure 5 , the protective layer 24 may include a second adhesive layer 241 and a polyester film layer 242, and the polyester film layer 242 may be bonded to the color filter layer 23 through the second adhesive layer 241, so that the second adhesive layer 241 and the polyester film layer 242 are sequentially stacked on the color filter layer 23. The second adhesive layer 241 may be an optically clear adhesive (OCA), which has a high light transmittance and a high bonding strength. Among them, the polyester film layer 242 may be a polyethylene terephthalate (PET) material, which has good light transmittance and flexibility, can protect the color filter layer 23, and is also conducive to the bending of the display module. For example, Figure 6 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA, refer to Figure 6 , the second protective adhesive layer 4 can be connected only to the color filter layer 23, that is, the thickness of the second protective adhesive layer 4 is less than or equal to the thickness of the color filter layer 23, thereby reducing the overall thickness of the display module at the second protective adhesive layer 4, which is beneficial to reducing the resistance of the second protective adhesive layer 4 to the movement of the kinetic layer. Figure 5 , the thickness of the second protective adhesive layer 4 is less than or equal to the sum of the thickness of the color film layer 23 and the protective layer 24, so that the second protective adhesive layer 4 can be connected to the color film layer 23 and the protective layer 24 at the same time, wherein the thickness of the color film layer 23 is relatively small, making it difficult to connect the second protective adhesive layer 4 and the color film layer 23, and the protective layer 24 located on the color film layer 23 can have a greater thickness than the color film layer 23, that is, by connecting the second protective adhesive layer 4 to the color film layer 23 and the protective layer 24 at the same time, the reliability of the connection between the second adhesive layer 241 and the color film layer 23 and the protective layer 24 can be ensured, the structural strength can be improved, and it can be ensured that there is no gap between the second protective adhesive layer 4 and the color film layer 23 and the protective layer 24, which can reliably improve the antistatic ability. In one embodiment, Figure 7 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA, refer to Figure 7, the thickness of the second protective adhesive layer 4 can be less than or equal to the sum of the thicknesses of the color film layer 23 and the second adhesive layer 241, that is, the second protective adhesive layer 4 can contact the color film layer 23 and the second adhesive layer 241 at the same time, but not contact the polyester film layer 242, so as to improve the connection strength of the second protective adhesive layer 4 while reducing the thickness of the second protective film layer. Figure 5 The second protective adhesive layer 4 can also be connected to the color filter layer 23, the second adhesive layer 241 and the polyester film layer 242 at the same time to improve the connection strength and ensure the structural reliability.

[0066] In one embodiment, Figure 8 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA, refer to Figure 8 , along the thickness direction Z of the display module, the second protective adhesive layer 4 overlaps with the functional layer 2. In this embodiment, the edge portion of the second protective adhesive layer 4 can overlap with the corresponding functional layer 2, that is, in the thickness direction Z of the display module, the second protective adhesive layer 4 can partially overlap with the projection of the corresponding functional layer 2, thereby ensuring that the second protective adhesive layer 4 can reliably cover the area between the first protective adhesive layer 3 and the functional layer 2 on the screen display control panel 11, and ensuring the reliability of antistatic through the second protective adhesive layer 4. At the same time, by overlapping the second protective adhesive layer 4 with the corresponding functional layer 2 in the thickness direction Z of the display module, a certain gap can be made between the second protective adhesive layer 4 and the corresponding functional layer 2 in the direction perpendicular to the thickness of the display module, so that the corresponding functional layer 2 can have a certain space in the direction perpendicular to the thickness of the display module, which is conducive to the displacement of the functional layer 2 to absorb the deformation of the functional layer 2 in the switching between the folded state and the flattened state.

[0067] In one embodiment, both the first protective adhesive layer 3 and the second protective adhesive layer 4 can be module protective adhesive layers (module coating layer, MCL), and the MCL adhesive has good antistatic ability and can resist static electricity greater than 12KV, thereby significantly improving the antistatic ability of the display module. In one embodiment, the first protective adhesive layer 3 and the second protective adhesive layer 4 can be an integrally formed structure. Exemplarily, the adhesive can be dispensed on the bending portion 111 of the screen display control panel 11 and the area between the functional layer 2 and the first protective adhesive layer 3 on the screen display control panel 11 by a dispensing process. In this embodiment, there is no clear boundary between the first protective adhesive layer 3 and the second protective adhesive layer 4. MCL adhesive can be applied to the corresponding area on the screen display control panel 11 in a single dispensing process, and the amount and range of the adhesive coating can be controlled, and the adhesive layer can be formed by a UV curing process, which is convenient for process processing, and at the same time, it can be ensured that there is no matching gap between the first protective adhesive layer 3 and the second protective adhesive layer 4, which is conducive to ensuring the antistatic effect. The second protective adhesive layer 4 can be in contact with the corresponding functional layer 2, so that there is no gap between the second protective adhesive layer 4 and the functional layer 2, thereby preventing static electricity from being directly conducted to the screen display control panel 11 and breaking through the screen display control panel 11. The MCL adhesive still has a certain elastic deformation ability after curing. When the MCL adhesive and the functional layer 2 are squeezed against each other, the corresponding functional layer 2 can still be displaced by the elastic deformation ability of the MCL adhesive, so as to absorb the deformation of the functional layer 2 when the display module is switched between the folded state and the flattened state.

[0068] In one embodiment, referring to Figure 2 , the second protective adhesive layer 4 can cover almost all sides of the corresponding functional layer 2, thereby improving the reliability of the contact between the second protective adhesive layer 4 and the corresponding functional layer 2, so as to achieve reliable coverage of the screen display control panel 11, and prevent the gap between the second protective adhesive layer 4 and the functional layer 2 from causing the electrostatic charge to be directly conducted to the screen display control panel 11. In one embodiment, Fig. 9 A display module provided in another embodiment of the present application is Figure 1 Partial cross-sectional view at AA, refer to Fig. 9 The second protective adhesive layer 4 does not need to completely cover the side of the corresponding functional layer 2, but can be in contact with a portion of the side of the corresponding functional layer 2. For example, the thickness of the second protective adhesive layer 4 at the position in contact with the corresponding functional layer 2 can be less than the thickness of the corresponding functional layer 2, thereby reducing the resistance of the second protective adhesive layer 4 to the movement of the functional layer 2 while improving the antistatic ability of the display module.

[0069] In one embodiment, the first protective rubber layer 3 may be a module protective rubber layer (MCL glue), and the second protective rubber layer 4 may be an acrylate layer. That is to say, the first protective rubber layer 3 and the second protective rubber layer 4 may be rubber layers of different materials, and the first protective rubber layer 3 and the second protective rubber layer 4 may be processed and formed separately. In one embodiment, MCL glue may be first applied on the bending portion 111 of the screen display control panel 11, and cured to form the first protective rubber layer 3. By controlling the amount of MCL glue applied, the range of glue applied, the UV curing process, etc., the first protective rubber layer 3 may be able to cover the surface of the bending portion 111, and at the same time, a certain space may be reserved between the first protective rubber layer 3 and the functional layer 2. Then, acrylate may be applied in the reserved space to form the second protective rubber layer 4. Thus, by independently setting the second protective rubber layer 4, the connection accuracy between the second protective rubber layer 4 and the functional layer 2 may be more accurately controlled.

[0070] Among them, the second protective adhesive layer 4 can be formed on the screen display control panel 11 by inkjet printing, so that the coating thickness of the second protective adhesive layer 4 can be accurately controlled, so that the second protective adhesive layer 4 can have a smaller thickness while improving the ability to resist static electricity, which is beneficial to reducing the resistance of the second protective adhesive layer 4 to the movement of the functional layer 2.

[0071] In one embodiment, the thickness of the second protective adhesive layer 4 may be 20-25 um. The second protective adhesive layer 4 has a relatively small thickness, which is beneficial to reducing the resistance of the second protective adhesive to the movement of the functional layer 2 .

[0072] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display module, characterized in that: include: A screen body, wherein the screen body comprises a screen display control panel, and the screen display control panel comprises a bending portion; A plurality of functional layers, wherein the plurality of functional layers are stacked and connected to the surface of the screen display control panel in the thickness direction of the display module; A first protective adhesive layer, wherein the first protective adhesive layer is connected to a surface of the bending portion; A second protective adhesive layer, wherein the second protective adhesive layer is respectively connected to the first protective adhesive layer and the functional layer, and covers a surface of the screen display control panel between the first protective adhesive layer and the functional layer.

2. The display module according to claim 1, characterized in that: The second protective adhesive layer overlaps the functional layer along the thickness direction of the display module.

3. The display module according to claim 1 or 2, characterized in that: The multi-layer functional layer at least includes a polarizer layer and a first adhesive layer, and the first adhesive layer and the polarizer layer are sequentially stacked on the screen display control panel; The second protective adhesive layer is connected to the first adhesive layer and / or the polarizer layer.

4. The display module according to claim 1 or 2, characterized in that: The multi-layer functional layer at least comprises a color film layer and a protective layer, and the color film layer and the protective layer are sequentially stacked on the screen display control panel; The second protective adhesive layer is connected to the color filter layer and / or the protective layer.

5. The display module according to any one of claims 1 to 4, characterized in that: The first protective adhesive layer and the second protective adhesive layer are integrally formed.

6. The display module according to any one of claims 1 to 4, characterized in that: The first protective adhesive layer is a module protective adhesive layer, and the second protective adhesive layer is an acrylic ester layer.

7. The display module according to claim 6, characterized in that: The second protective adhesive layer is formed on the screen display control panel by inkjet printing.

8. The display module according to claim 6 or 7, characterized in that: The thickness of the second protective adhesive layer is 20-25 um.

9. The display module according to claim 3, characterized in that: The thickness of the second protective adhesive layer is less than or equal to the thickness of the first adhesive layer, or the thickness of the second protective adhesive layer is less than or equal to the sum of the thicknesses of the first adhesive layer and the polarizer layer.

10. The display module according to claim 4, characterized in that: The thickness of the second protective adhesive layer is less than or equal to the thickness of the color filter layer, or the thickness of the second protective adhesive layer is less than or equal to the sum of the thicknesses of the color filter layer and the protective layer.

11. The display module according to claim 10, characterized in that: The protective layer comprises a second adhesive layer and a polyester film layer, and the second adhesive layer and the polyester film layer are sequentially stacked on the color filter layer; The thickness of the second protective adhesive layer is less than or equal to the sum of the thicknesses of the color filter layer and the second adhesive layer.

12. The display module according to any one of claims 1 to 11, characterized in that: The screen display control panel also includes a straight portion, which is connected to the bent portion, and multiple functional layers are stacked and connected to the surface of the straight portion in the thickness direction of the display module, and the second protective adhesive layer covers the surface of the straight portion between the first protective adhesive layer and the functional layer.

13. An electronic device, characterized in that: A display module comprising any one of claims 1-12.

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