Display module and display device

Abstract

The embodiment of the invention provides a display module and a display device. According to the display module, the first bonding layer at least comprises the first part, the first part at least corresponds to the edge part, and the impedance of the first part is larger than that of the second bonding layer, so that the first part with larger impedance can block static electricity, and the static electricity is prevented from influencing a display part in the display panel; the second bonding layer with smaller impedance can be formed by adopting a material with better thermal stability, and compared with the first part, the thermal stability of the second bonding layer is improved, so that the binding stability of the display module is improved, and the antistatic effect and the binding stability of the display module are considered.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) display devices are widely used due to their advantages such as self-luminescence and flexibility. In order to support the display screen, an OLED display device will have a backplane under the display screen. In order to achieve the bonding of the backplane and the display screen, an adhesive will be coated on the backplane, and the backplane with a layer of adhesive will be bonded to the display screen. However, during use, it is found that static electricity will appear on the display device. The static electricity will move along the edge of the display device and invade from between the backplane and the display screen, causing the display screen to be affected by static electricity, resulting in poor display or even no display. In order to solve the above problems, existing OLED display devices will dope particles in the glue, but the thermal stability of the doped particles is poor, which will cause the binding between the backplane and the display screen to fail during the preparation process of the OLED display device.

[0003] Therefore, the existing OLED display devices have the technical problem of being unable to take into account both antistatic effect and binding stability. Summary of the invention

[0004] The embodiments of the present application provide a display module and a display device to solve the technical problem that the existing OLED display devices cannot achieve both antistatic effect and binding stability.

[0005] In order to achieve the above object, according to a first aspect of the present application, a display module is provided, the display module comprising:

[0006] The display panel comprises a plane portion, a curved portion and a binding portion, wherein the curved portion is arranged between the plane portion and the binding portion, and the plane portion comprises a middle portion and an edge portion arranged around the middle portion;

[0007] A back plate, comprising a first back plate and a second back plate, wherein the first back plate is disposed on one side of the planar portion and in contact with the planar portion, the second back plate is disposed on one side of the binding portion and in contact with the binding portion, and the first back plate and the second back plate are disposed opposite to each other;

[0008] An adhesive layer, comprising a first adhesive layer and a second adhesive layer, wherein the first adhesive layer is disposed between the planar portion and the first back plate, and the second adhesive layer is disposed between the binding portion and the second back plate;

[0009] The first adhesive layer at least includes a first portion, the first portion is at least arranged corresponding to the edge portion, and an impedance of the first portion is greater than an impedance of the second adhesive layer.

[0010] Optionally, the edge portion includes a first edge portion, a second edge portion, a third edge portion and a fourth edge portion, and the first portion is arranged corresponding to at least one of the first edge portion, the second edge portion, the third edge portion and the fourth edge portion.

[0011] Optionally, the first portion is arranged corresponding to the first edge portion, the second edge portion, the third edge portion and the fourth edge portion, and the portions of the first portion arranged corresponding to the edge portions are connected.

[0012] Optionally, the first adhesive layer also includes a second part, which is arranged corresponding to the middle part, the impedance of the second part is smaller than the impedance of the first part, and at a preset temperature, the rate at which the storage modulus of the second part decreases is smaller than the rate at which the storage modulus of the first part decreases.

[0013] Optionally, the first part is also arranged corresponding to the middle part.

[0014] Optionally, at a preset temperature, a rate at which the storage modulus of the first portion decreases is greater than a rate at which the storage modulus of the second adhesive layer decreases.

[0015] Optionally, the first part includes a first substrate and insulating particles disposed in the first substrate, the second adhesive layer includes a second substrate, the first substrate and the second substrate are made of the same material, the impedance of the insulating particles is greater than the impedance of the first substrate, and at the preset temperature, the rate at which the storage modulus of the insulating particles decreases is greater than the rate at which the storage modulus of the first substrate decreases.

[0016] Optionally, the first substrate includes an acrylic material, and the insulating particles include rubber.

[0017] Optionally, the display module further includes a cover plate and a glue layer, the cover plate is arranged on a side of the display panel away from the back plate, the glue layer is arranged between the cover plate and the display panel, and the impedance of the first part is greater than the impedance of the glue layer.

[0018] According to a second aspect of the present application, a display device is provided, comprising a display module as described in any one of the above embodiments.

[0019] The embodiments of the present application provide a display module and a display device; the display module comprises a first adhesive layer including at least a first part, the first part is at least arranged corresponding to the edge part, and the impedance of the first part is greater than the impedance of the second adhesive layer, so that the first part with a larger impedance can block static electricity to prevent static electricity from affecting the display part of the display panel, and the second adhesive layer with a smaller impedance can be formed by adopting a material with better thermal stability, which improves the thermal stability of the second adhesive layer compared with the first part, thereby improving the binding stability of the display module, thereby taking into account both the antistatic effect and the binding stability of the display module.

[0020] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0022] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0023] Figure 1 Schematic diagram of a comparative display device provided in an embodiment of the present application.

[0024] Figure 2 A schematic diagram of a display module provided in an embodiment of the present application.

[0025] Figure 3 This is a first schematic diagram of a backplane and an adhesive layer provided in an embodiment of the present application.

[0026] Figure 4 A second schematic diagram of a backplane and an adhesive layer provided in an embodiment of the present application.

[0027] Figure 5 A third schematic diagram of a backplane and an adhesive layer provided in an embodiment of the present application.

[0028] Figure 6 A schematic plan view of a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0030] In order to explain the principle of the technical problem of the embodiment of the present application, a comparative display device is provided. It is understandable that the comparative display device cannot be used as the prior art. Figure 1 As shown, the comparative display device includes a composite film 111, a backplane film 112, a display element 113, a polarizing film 114, an adhesive film 115 and a cover glass 116. The backplane film 112 and the display element 113 are bonded together by an adhesive. Figure 1 It can be seen that during the use of the comparative display device, electric charges 117 will be generated on the cover glass 116, and the electric charges 117 will move along the edge of the comparative display device to between the back film 112 and the display element 113, and invade the display element 113 from between the back film 112 and the display element 113, causing the display element 113 to be interfered by static electricity, resulting in display abnormalities or even no display.

[0031] In order to solve the above problem, some comparative display devices use acrylic glue as the adhesive of the backplane film 112 to bond the backplane film 112 and the display element 113, but the surface resistance of the adhesive layer formed by the acrylic glue can only reach 10 14 Ohm, still cannot meet the needs of narrow borders.

[0032] In order to solve the above problems, some other comparative display devices will set rubber particles in acrylic glue, which can increase the resistance to 10 15 Ohm, which meets the anti-static requirements of narrow-frame display devices, but in actual use, it is found that the thermal stability of rubber particles is poor. The temperature in the binding process can reach over 200 degrees Celsius. At this time, the rubber material with rubber particles added will have poor support, resulting in cracks in the binding, and binding failure, resulting in abnormal display. Therefore, existing OLED display devices have the technical problem of not being able to take into account both anti-static effect and binding stability.

[0033] In view of the above technical problems, the embodiments of the present application provide a display module and a display device to solve the above technical problems.

[0034] Figure 2 A schematic diagram of a display module provided in an embodiment of the present application. Figure 3 A first schematic diagram of a backplane and an adhesive layer provided in an embodiment of the present application, Figure 3(a) is a first plan view of the backplane and the adhesive layer. Figure 3 (b) in Figure 3 Schematic diagram of the A1-A2 cross section in (a). Figure 4 A second schematic diagram of a backplane and an adhesive layer provided in an embodiment of the present application, Figure 4 (a) is a second plan view of the backplane and the adhesive layer. Figure 4 (b) in Figure 4 Schematic diagram of the A1-A2 cross section in (a). Figure 5 A third schematic diagram of a backplane and an adhesive layer provided in an embodiment of the present application, Figure 5 (a) is a third plan view of the backplane and the adhesive layer. Figure 5 (b) in Figure 5 Schematic diagram of the A1-A2 cross section in (a). Figure 6 A schematic plan view of a display panel provided in an embodiment of the present application.

[0035] like Figures 2 to 6 As shown, the embodiment of the present application provides a display module, the display module 2 includes a display panel 21, a back plate 22 and an adhesive layer 32, the display panel 21 includes a plane portion 211, a curved portion 212 and a binding portion 213, the curved portion 212 is arranged between the plane portion 211 and the binding portion 213, the plane portion 211 includes a middle portion 211a and an edge portion 211b arranged around the middle portion 211a; the back plate 22 includes a first back plate 221 and a second back plate 222, the first back plate 221 is provided The first back plate 221 is disposed on one side of the plane portion 211 and in contact with the plane portion 211, the second back plate 222 is disposed on one side of the binding portion 213 and in contact with the binding portion 213, and the first back plate 221 and the second back plate 222 are disposed opposite to each other; the adhesive layer 32 includes a first adhesive layer 321 and a second adhesive layer 322, the first adhesive layer 321 is disposed between the first back plate 221 and the plane portion 211, and the second adhesive layer 322 is disposed between the second back plate 222 and the binding portion 213;

[0036] The first adhesive layer 321 at least includes a first portion 321 a , the first portion 321 a is at least arranged corresponding to the edge portion 211 b , and an impedance of the first portion 321 a is greater than an impedance of the second adhesive layer 322 .

[0037] An embodiment of the present application provides a display module, which includes at least a first part in a first adhesive layer, wherein the first part is at least arranged corresponding to an edge part, and the impedance of the first part is greater than the impedance of the second adhesive layer. The first part with a larger impedance can block static electricity to prevent static electricity from affecting a display part in a display panel. The second adhesive layer with a smaller impedance can be formed by adopting a material with better thermal stability. Compared with the first part, the thermal stability of the second adhesive layer is improved, thereby improving the binding stability of the display module, thereby taking into account both the antistatic effect and the binding stability of the display module.

[0038] Specifically, compared with the overall performance of the adhesive layer in the current display device, which is the same (there may be certain differences due to the influence of process or other factors, but the overall performance of the adhesive layer can still be regarded as the same), for example, the adhesive layer as a whole is formed of a material with lower impedance but better thermal stability, and the impedance of each part of the adhesive layer is the same, or the adhesive layer as a whole adopts the addition of rubber particles to increase the impedance, but the thermal stability is poor. In the embodiment of the present application, the impedance of the first part is greater than the impedance of the second adhesive layer. Then, when forming the first part and the second adhesive layer, different materials can be used to form the first part and the second adhesive layer. For example, the same substrate is used to form the first part and the second adhesive layer respectively by doping or undoping particles, so that the performance of the first part and the second adhesive layer is different, the impedance of the first part can be greater than the impedance of the second adhesive layer, and the thermal stability of the second adhesive layer can be greater than the thermal stability of the first part, thereby taking into account the antistatic effect and binding stability of the display module.

[0039] In some embodiments, at a preset temperature, the rate at which the storage modulus of the first portion 321a decreases is greater than the rate at which the storage modulus of the second adhesive layer 322 decreases. By making the rate at which the storage modulus of the second adhesive layer decreases at a preset temperature less than the rate at which the storage modulus of the first portion decreases, the thermal stability of the second adhesive layer can be improved, thereby improving the binding stability of the display module.

[0040] Specifically, at the preset temperature, the rate at which the storage modulus of the first portion decreases is greater than the rate at which the storage modulus of the second adhesive layer decreases, which means that the thermal stability of the second adhesive layer is better than the thermal stability of the first portion. The preset temperature can be determined according to the characteristics of different materials. For example, at 100 degrees Celsius and above, the rate at which the storage modulus of the first portion decreases is greater than the rate at which the storage modulus of the second adhesive layer decreases, and the preset temperature can be any temperature at 100 degrees Celsius and above.

[0041] Specifically, the preset temperature may be greater than or equal to 200 degrees Celsius.

[0042] Specifically, Figure 2As shown, the embodiment of the present application is explained by taking the example that the binding portion of the display panel in the display module is bent toward the back to reduce the frame, but the embodiment of the present application is not limited to this. The binding portion of the display panel in the display module may not be bent toward the back. In this case, there is no need to set a bending portion, the first back plate and the second back plate can be connected together, and the binding portion can be regarded as part of the edge portion.

[0043] Specifically, Figure 2 As shown, in order to reduce the border of the display module, a part of the display module will be bent toward the back of the display module 2, and in order to further improve the flexibility of the bending part, the part of the back plate corresponding to the bending part of the display panel will be removed to reduce the bending radius and further reduce the border, but the embodiments of the present application are not limited to this, and the back plate can be set corresponding to the bending part of the display panel.

[0044] In some embodiments, Figures 3 to 6 As shown, the edge portion 211b includes a first edge portion 301a, a second edge portion 301b, a third edge portion 301c and a fourth edge portion 301d, and the first portion 321a is arranged corresponding to at least one of the first edge portion 301a, the second edge portion 301b, the third edge portion 301c and the fourth edge portion 301d. By making the first portion arranged corresponding to the first edge portion, the second edge portion, the third edge portion and the fourth edge portion, the arrangement area of ​​the first portion corresponding to at least one of the first edge portion, the second edge portion, the third edge portion and the fourth edge portion can block electrostatic charges, prevent static electricity from entering the display panel to cause poor display, and improve the yield of the display module.

[0045] Specifically, the middle portion of the planar portion may correspond to the normal display area of ​​the display panel, and the edge portion of the planar portion may correspond to the non-display area surrounding the normal display area in the display panel, and a circuit may be arranged in the non-display area. However, the embodiment of the present application is not limited thereto, and the edge portion may correspond to a portion of the normal display area.

[0046] Specifically, the first portion can be arranged corresponding to one of the first edge portion, the second edge portion, the third edge portion and the fourth edge portion. For example, the first portion can be arranged corresponding to the first edge portion, or the first portion can also be arranged corresponding to the second edge portion, or the first portion and the third edge portion can be arranged corresponding to the fourth edge portion, so that the first portion can block the electrostatic charge invading from the setting area of ​​the first edge portion, or block the electrostatic charge invading from the setting area of ​​the second edge portion, or block the electrostatic charge invading from the setting area of ​​the third edge portion, or block the electrostatic charge invading from the setting area of ​​the fourth edge portion, thereby reducing the electrostatic charge entering the display panel, reducing the influence of static electricity on the display panel, and improving the yield of the display module.

[0047] Specifically, the first part can also be arranged to correspond to two of the first edge part, the second edge part, the third edge part and the fourth edge part, for example, the first part can be arranged to correspond to the first edge part and the second edge part, or the first part can be arranged to correspond to the first edge part and the third edge part, or the first part can be arranged to correspond to the first edge part and the fourth edge part, or the first part can be arranged to correspond to the second edge part and the third edge part, or the first part can be arranged to correspond to the second edge part and the fourth edge part, or the first part can be arranged to correspond to the third edge part and the fourth edge part, so that the electrostatic charge invading from the two edge parts can be blocked by the first part, the electrostatic charge entering the display panel can be reduced, the influence of static electricity on the display panel can be reduced, and the yield of the display module can be improved.

[0048] Specifically, the first part can also be arranged to correspond to three of the first edge part, the second edge part, the third edge part and the fourth edge part, for example, the first part can be arranged to correspond to the first edge part, the second edge part and the third edge part, or the first part can be arranged to correspond to the first edge part, the second edge part and the fourth edge part, or the first part can be arranged to correspond to the first edge part, the third edge part and the fourth edge part, or the first part can be arranged to correspond to the second edge part, the third edge part and the fourth edge part, so that the electrostatic charges invading from the three edge parts can be blocked by the first part, the electrostatic charges entering the inside of the display panel can be reduced, the influence of static electricity on the display panel can be reduced, and the yield of the display module can be improved.

[0049] Specifically, when the first portion is arranged corresponding to a plurality of edge portions, the portions arranged corresponding to the plurality of edge portions may be connected to each other, or the portions arranged corresponding to the plurality of edge portions may be disconnected.

[0050] In some embodiments, Figure 4 , Figure 6 As shown, the first portion 321a is arranged correspondingly to the first edge portion 301a, the second edge portion 301b, the third edge portion 301c and the fourth edge portion 301d, and the first portion 321a is connected to the respective portions arranged correspondingly to the edge portions 211b. By making the first portion arranged correspondingly to the first edge portion, the second edge portion, the third edge portion and the fourth edge portion, and the first portion being connected to the respective portions arranged correspondingly to the edge portions, the first portion can be arranged at least around the display panel to block the path of electrostatic charges entering the interior of the display panel, prevent static electricity from affecting the normal display of the display panel, and improve the yield of the display module.

[0051] Specifically, Figure 4 As shown, it can be seen that the first portion 321a and the portion corresponding to the first edge portion 301a, the portion corresponding to the first portion 321a and the second edge portion 301b, the portion corresponding to the first portion 321a and the third edge portion 301c, and the portion corresponding to the first portion 321a and the fourth edge portion 301d are connected together to form a closed structure surrounding the display panel, so that when static electricity invades the inside of the display panel from the edge, the first portion can block the static electricity charges invading from all sides, prevent static electricity from affecting the normal display of the display panel, and improve the yield of the display module.

[0052] In some embodiments, Figure 4 , Figure 6 As shown, the first adhesive layer 321 also includes a second portion 321b, the second portion 321b is arranged correspondingly to the middle portion 211a, the impedance of the second portion 321b is less than the impedance of the first portion 321a, and at a preset temperature, the rate at which the storage modulus of the second portion 321b decreases is less than the rate at which the storage modulus of the first portion 321a decreases. By making the first adhesive layer also include a second portion, the second portion is arranged correspondingly to the middle portion, the impedance of the second portion is less than the impedance of the first portion, and at a preset temperature, the rate at which the storage modulus of the second portion decreases is less than the rate at which the storage modulus of the first portion decreases, the first portion can block the static electricity charges invading from all around, prevent static electricity from affecting the normal display of the display panel, and improve the yield of the display module.

[0053] Specifically, the impedance of the second portion may be the same as the impedance of the second adhesive layer, and at a preset temperature, the rate at which the storage modulus of the second portion decreases may be the same as the rate at which the storage modulus of the second adhesive layer decreases.

[0054] Specifically, the material of the second portion may be the same as that of the second adhesive layer.

[0055] Specifically, Figure 4 As shown, Figure 4 (a) is a second plan view of the backplane and the adhesive layer. Figure 4 (b) in Figure 4 A1-A2 cross-sectional view of (a), from Figure 4 It can be seen that when forming the adhesive layer on the back panel, the material for forming the second adhesive layer can be applied at the position corresponding to the middle part and the binding part, and the material for forming the first part can be applied at the position corresponding to the edge part.

[0056] In some embodiments, Figure 3 , Figure 6 As shown, the first portion 321a is also arranged corresponding to the middle portion 211a. By making the first portion also arranged corresponding to the middle portion, the impedance of the corresponding area of ​​the plane portion is larger, and the electrostatic charge cannot enter the interior of the display panel, further improving the anti-static effect of the display module and improving the yield of the display module.

[0057] Specifically, the portion of the first part 321a corresponding to the middle part 211a contacts the portion of the first part 321a corresponding to the edge part 211b, so that the first part is arranged as a whole without etching or multiple process steps, thereby reducing the process steps.

[0058] Specifically, Figure 3 As shown, Figure 3 (a) is a first plan view of the backplane and the adhesive layer. Figure 3 (b) in Figure 3 A1-A2 cross-sectional view of (a), from Figure 3 It can be seen that when forming the adhesive layer on the backplane, the material for forming the second adhesive layer can be applied at the position corresponding to the binding part, and the material for forming the first part can be applied at the position corresponding to the planar part.

[0059] In some embodiments, Figure 5As shown, the first portion 321a is arranged correspondingly to the first edge portion 301a, the second edge portion 301b, the third edge portion 301c and the fourth edge portion 301d, and there is a gap between at least two of the portion of the first portion 321a corresponding to the first edge portion 301a, the portion of the first portion 321a corresponding to the second edge portion 301b, the portion of the first portion 321a corresponding to the third edge portion 301c and the portion of the first portion 321a corresponding to the fourth edge portion 301d. By making the first portion arranged correspondingly to the first edge portion, the second edge portion, the third edge portion and the fourth edge portion, the first portion can block the electrostatic charge invading from the corresponding areas of the first edge portion, the second edge portion, the third edge portion and the fourth edge portion, prevent the static electricity from affecting the normal display of the display panel, and improve the yield of the display module.

[0060] Specifically, Figure 5 As shown, Figure 5 (a) is a third plan view of the backplane and the adhesive layer. Figure 5 (b) in Figure 5 A1-A2 cross-sectional view of (a), from Figure 5 It can be seen that when forming an adhesive layer on the back panel, the material forming the second adhesive layer can be coated at a position corresponding to a portion of the binding portion and the edge portion, and the material forming the first portion can be coated at a position corresponding to another portion of the middle portion and the edge portion.

[0061] Specifically, Figure 5 As shown, Figure 5 It is shown that the portion corresponding to the first part and the first edge portion, the portion corresponding to the first part and the second edge portion, the portion corresponding to the first part and the third edge portion, and the portion corresponding to the first part and the fourth edge portion are all disconnected, but the embodiments of the present application are not limited to this. For example, the portion corresponding to the first part and the first edge portion and the portion corresponding to the first part and the second edge portion may be connected.

[0062] In some embodiments, the first portion 321a includes a first substrate and insulating particles disposed in the first substrate, the second adhesive layer 322 includes a second substrate, the first substrate and the second substrate are made of the same material, the impedance of the insulating particles is greater than the impedance of the first substrate, and at a preset temperature, the rate at which the storage modulus of the insulating particles decreases is greater than the rate at which the storage modulus of the first substrate decreases. By making the first part include a first substrate and insulating particles, the second adhesive layer includes a second substrate, the first substrate and the second substrate are made of the same material, the impedance of the insulating particles is greater than the impedance of the first substrate, and at the preset temperature, the rate at which the storage modulus of the insulating particles decreases is greater than the rate at which the storage modulus of the first substrate decreases, the impedance of the first part can be increased by the insulating particles, and there is no need to provide insulating particles in the second adhesive layer, thereby improving the thermal stability of the second part, and making the first part at least corresponding to the edge part, and the second adhesive layer corresponding to the binding part, so that the first part with a larger impedance blocks static electricity at the corresponding position of the edge part, thereby preventing static electricity from affecting the internal structure of the display panel, and the second adhesive layer with a smaller impedance is provided corresponding to the binding part, thereby preventing the addition of insulating particles in the second adhesive layer from causing poor stability, thereby improving the binding stability of the display module, and further taking into account both the antistatic effect and the binding stability of the display module.

[0063] In some embodiments, the first substrate includes an acrylic material, and the insulating particles include rubber. By making the first substrate include an acrylic material and the insulating particles include rubber, the impedance of the first part can be increased, so that the first part can block static electricity from invading the interior of the display panel, and the second adhesive layer does not add rubber, which can improve the thermal stability of the second adhesive layer, thereby taking into account both the antistatic effect and the binding stability of the display module.

[0064] Specifically, the resistance of the first part is greater than or equal to 10 15 ohm.

[0065] Specifically, the material of the second part may be a second substrate.

[0066] Specifically, the above embodiment is described by taking the material of the first substrate as acrylic material as an example, but the embodiment of the present application is not limited thereto. The material of the first substrate can be other viscous materials, but it is required that the resistance value of the first part is greater than or equal to 10 15 Ohm, the thermal stability of the second bonding layer is better.

[0067] In some embodiments, Figure 2As shown, the display module 2 further includes a cover plate 26 and a glue layer 25, wherein the cover plate 26 is disposed on a side of the display panel 21 away from the back plate 22, and the glue layer 25 is disposed between the cover plate 26 and the display panel 21, and the impedance of the first portion 411 is greater than the impedance of the glue layer 25. By making the impedance of the first portion greater than the impedance of the glue layer, the first portion can block static electricity from invading the display panel, and even if static electricity charges invading the display panel from one side of the glue layer, since the side of the display panel close to the glue layer is provided with metal, the static electricity can be conducted out, thereby preventing static electricity from affecting the display panel and improving the yield of the display module.

[0068] Specifically, it can be understood that static electricity is generally generated on the upper surface of the cover plate 26 and then moves to various components. Since the cover plate, the glue layer and other film layers are not affected by static electricity and will not affect the normal display, the static electricity can be allowed to exist in the cover plate, the glue layer and other film layers, and metal or other conductive materials are provided on the side of the display panel close to the cover plate to conduct the static electricity, while the side of the display panel close to the back plate is a substrate from which the static electricity cannot be conducted. Therefore, it is necessary to prevent static electricity from invading the side of the display panel close to the back plate. Therefore, the impedance of the first part can be made greater than the impedance of the glue layer between other film layers, so that the static electricity is released by other components or by the side of the display panel with conductive material, thereby preventing static electricity from damaging the display panel and improving the yield of the display module.

[0069] Specifically, Figure 2 As shown, the display module 2 also includes a polarizer 24, which is arranged between the display panel 21 and the adhesive layer 25. The polarizer 24 and the display panel 21 can be bonded by another adhesive layer. At this time, the impedance of the first part can be made greater than the impedance of the adhesive layer between the polarizer and the display panel.

[0070] Specifically, Figure 2 As shown, the display module 2 further includes a composite layer 23, and the composite layer 23 includes a grid adhesive layer 231, a foam layer 232, and a heat dissipation layer 233, but the embodiment of the present application is not limited thereto, and the composite layer can be a composite layer of other structures. The composite layer 23 and the back plate 22 can be bonded by another adhesive layer, and at this time, the impedance of the first part can be greater than the impedance of the adhesive layer between the composite layer and the back plate.

[0071] Specifically, Figure 2 As shown, the display module 2 further includes a double-sided tape 27 and a flexible circuit board 28 , one end of the flexible circuit board 28 is bound to the display panel 21 , and the other end of the flexible circuit board 28 is connected to the composite layer 23 via the double-sided tape 27 .

[0072] Specifically, Figure 2 As shown, the display module 2 further includes a driving chip 29 , and the driving chip 29 is bound to the display panel.

[0073] Specifically, Figure 2 As shown, the display module 2 further includes a UV curing adhesive 31 , which is arranged corresponding to the bending portion 212 , and is arranged on one side of the display panel 21 . By arranging the UV curing adhesive, the display panel can be protected.

[0074] Specifically, the material of the back plate includes polyethylene terephthalate.

[0075] Specifically, it can be understood that since there is no conductive material between the back plate and the display panel, static electricity entering from here will cause damage to the display panel and affect normal display, while other film layers do not have a display function. There is conductive material on the side of the display panel close to the polarizer to release static electricity. Therefore, in addition to the need to set an insulating material with a large impedance between the back plate and the display panel to block static electricity, the existence of static electricity or the release of static electricity in other areas will reduce the risk of static electricity intrusion between the back plate and the display panel. Therefore, the impedance of the adhesive layer can be made greater than the impedance of the adhesive layer in other positions, thereby reducing the risk of static electricity damaging the display panel and improving the yield of the display module.

[0076] The above-mentioned embodiments have described the display module in detail from the perspective of various film layers and the combination of various film layers. It can be understood that when there is no conflict between the embodiments, the embodiments can be combined. For example, the edge portion includes a first edge portion, a second edge portion, a third edge portion and a fourth edge portion, and the first portion is arranged corresponding to at least one of the first edge portion, the second edge portion, the third edge portion and the fourth edge portion. The display module also includes a cover plate and a glue layer. The cover plate is arranged on a side of the display panel away from the back plate, and the glue layer is arranged between the cover plate and the display panel. The impedance of the first portion is greater than the impedance of the glue layer.

[0077] At the same time, an embodiment of the present application provides a display device, which includes a display module as described in any of the above embodiments.

[0078] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0079] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0080] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0081] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display module, characterized in that: include: The display panel comprises a plane portion, a curved portion and a binding portion, wherein the curved portion is arranged between the plane portion and the binding portion, and the plane portion comprises a middle portion and an edge portion arranged around the middle portion; A back plate, comprising a first back plate and a second back plate, wherein the first back plate is disposed on one side of the planar portion and in contact with the planar portion, the second back plate is disposed on one side of the binding portion and in contact with the binding portion, and the first back plate and the second back plate are disposed opposite to each other; An adhesive layer, comprising a first adhesive layer and a second adhesive layer, wherein the first adhesive layer is disposed between the planar portion and the first back plate, and the second adhesive layer is disposed between the binding portion and the second back plate; The first adhesive layer at least includes a first portion, the first portion is at least arranged corresponding to the edge portion, and an impedance of the first portion is greater than an impedance of the second adhesive layer.

2. The display module according to claim 1, characterized in that: The edge portion includes a first edge portion, a second edge portion, a third edge portion, and a fourth edge portion, and the first portion is disposed corresponding to at least one of the first edge portion, the second edge portion, the third edge portion, and the fourth edge portion.

3. The display module according to claim 2, characterized in that: The first portion is arranged corresponding to the first edge portion, the second edge portion, the third edge portion and the fourth edge portion, and the portions of the first portion arranged corresponding to the edge portions are connected.

4. The display module according to claim 3, characterized in that: The first adhesive layer also includes a second part, which is arranged corresponding to the middle part, the impedance of the second part is smaller than the impedance of the first part, and at a preset temperature, the rate at which the storage modulus of the second part decreases is smaller than the rate at which the storage modulus of the first part decreases.

5. The display module according to claim 3, characterized in that: The first portion is also arranged corresponding to the middle portion.

6. The display module according to any one of claims 1 to 5, characterized in that: At a preset temperature, a rate at which the storage modulus of the first portion decreases is greater than a rate at which the storage modulus of the second adhesive layer decreases.

7. The display module according to any one of claims 1 to 5, characterized in that: The first part includes a first substrate and insulating particles arranged in the first substrate, the second adhesive layer includes a second substrate, the first substrate and the second substrate are made of the same material, the impedance of the insulating particles is greater than the impedance of the first substrate, and at a preset temperature, the rate at which the storage modulus of the insulating particles decreases is greater than the rate at which the storage modulus of the first substrate decreases.

8. The display module according to claim 7, characterized in that: The first substrate includes acrylic material, and the insulating particles include rubber.

9. The display module according to claim 1, characterized in that: The display module further includes a cover plate and a glue layer, wherein the cover plate is arranged on a side of the display panel away from the back plate, the glue layer is arranged between the cover plate and the display panel, and the impedance of the first part is greater than the impedance of the glue layer.

10. A display device, characterized in that: Comprising a display module as described in any one of claims 1 to 9.

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