Display module and display device

Abstract

Embodiments of the present application provide a display module and a display device; the display module is configured to at least include a first adhesive layer, the first adhesive layer is provided at least in correspondence with an edge portion, and the impedance of the first adhesive layer is greater than that of a second adhesive layer; thus, the first adhesive layer with greater impedance can block static electricity, so as to avoid the influence of static electricity on a display portion in the display panel; the second adhesive layer with smaller impedance can be formed by using a material with better thermal stability, so as to improve the thermal stability of the second adhesive layer compared with the first adhesive layer, thereby improving the binding stability of the display module, and further taking into account the antistatic effect and the binding stability of the display module.

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, OLED display devices will set a back panel under the display screen. In order to achieve the adhesion of the back panel and the display screen, an adhesive material will be coated on the back panel, and the back panel with a layer of adhesive will be adhered 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 back panel 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 back panel and the display screen to fail during the preparation process of the OLED display device.

[0003] Therefore, existing OLED display devices have the technical problem of being unable to achieve 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 existing OLED display devices cannot achieve both antistatic effect and binding stability.

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

[0006] The display panel includes a planar portion, a curved portion, and a binding portion, wherein the curved portion is disposed between the planar portion and the binding portion, and the planar portion includes a middle portion and an edge portion disposed 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, and 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 includes at least 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 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 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 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] An embodiment of the present application provides a display module and a display device; the display module comprises a first adhesive layer including at least a first portion, the first portion being arranged at least corresponding to an edge portion, and the impedance of the first portion being greater than the impedance of the second adhesive layer, so that the first portion with a larger impedance can block static electricity, thereby preventing static electricity from affecting the display portion of the display panel. 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 to the first portion, thereby improving the binding stability of the display module, and thus 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] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[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 drawing 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 the backplane and adhesive layer provided in an embodiment of the present application.

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

[0027] Figure 5 This is a third schematic diagram of the backplane and 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 following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not 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 illustrate 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 regarded 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 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. 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 with 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. However, 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 While the ohm material meets the anti-static requirements of narrow-frame display devices, in actual use, it has been found that the thermal stability of the rubber particles is poor. During the bonding process, temperatures can reach over 200 degrees Celsius. At this point, the adhesive material containing the rubber particles can experience reduced support, leading to cracks in the bonding process, and ultimately, bonding failure, resulting in malfunctioning displays. Therefore, existing OLED display devices face the technical challenge of not being able to achieve both anti-static performance and bonding stability.

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

[0034] Figure 2 A schematic diagram of a display module provided in an embodiment of the present application. Figure 3 This is a first schematic diagram of the backplane and adhesive layer provided in an embodiment of the present application. Figure 3(a) is a first planar schematic diagram of the backplane and the adhesive layer. Figure 3 (b) in Figure 3 Schematic diagram of the A1-A2 section in (a). Figure 4 This is a second schematic diagram of the backplane and adhesive layer provided in an embodiment of the present application. Figure 4 (a) is a second planar schematic diagram of the backplane and the adhesive layer. Figure 4 (b) in Figure 4 Schematic diagram of the A1-A2 section in (a). Figure 5 This is a third schematic diagram of the backplane and adhesive layer provided in an embodiment of the present application. Figure 5 (a) is a third planar schematic diagram of the backplane and the adhesive layer. Figure 5 (b) in Figure 5 Schematic diagram of the A1-A2 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, which includes a display panel 21, a back panel 22 and an adhesive layer 32. The display panel 21 includes a flat portion 211, a curved portion 212 and a binding portion 213. The curved portion 212 is arranged between the flat portion 211 and the binding portion 213. The flat portion 211 includes a middle portion 211a and an edge portion 211b arranged around the middle portion 211a. The back panel 22 includes a first back panel 221 and a second back panel 222. The first back panel 221 is provided with a plurality of adhesive layers. The first back plate 221 is disposed on one side of the planar portion 211 and in contact with the planar 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. The first back plate 221 and the second back plate 222 are disposed opposite 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 planar 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 , and the first portion 321 a is at least arranged corresponding to the edge portion 211 b . The impedance of the first portion 321 a is greater than the impedance of the second adhesive layer 322 .

[0037] An embodiment of the present application provides a display module, which comprises a first adhesive layer including at least a first portion, wherein the first portion is at least arranged corresponding to an edge portion, and the impedance of the first portion is greater than the impedance of the second adhesive layer. The first portion with a larger impedance can block static electricity to prevent static electricity from affecting the display portion of the 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 portion, 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 (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 considered to be the same), for example, the adhesive layer as a whole is formed of a material with low impedance but good thermal stability, and the impedance of each part of the adhesive layer is the same, or the adhesive layer as a whole uses 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, and the first part and the second adhesive layer are formed respectively by doping or not doping particles, so that the performance of the first part and the second adhesive layer are 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 anti-static 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 slower 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 a 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, indicating that the thermal stability of the second adhesive layer is superior to that of the first portion. The preset temperature can be determined based on the properties of different materials. For example, if 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 at a temperature of 100 degrees Celsius or above, the preset temperature can be any temperature at or above 100 degrees Celsius.

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

[0042] Specifically, such as 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, such as Figure 2 As shown, in order to reduce the bezel 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 bezel, 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, as 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. The first portion 321a is disposed correspondingly 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 disposing the first portion correspondingly to the first, second, third, and fourth edge portions, the area where the first portion is disposed corresponding to at least one of the first, second, third, and fourth edge portions can block electrostatic charge, preventing static electricity from entering the display panel and causing display defects, thereby improving 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 of ​​the display panel, where circuits may be disposed. However, embodiments of the present application are not limited thereto, and the edge portion may correspond to a portion of the normal display area.

[0046] Specifically, the first part can be arranged corresponding to one 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 corresponding to the first edge part, or the first part can also be arranged corresponding to the second edge part, or the first part and the third edge part can be arranged corresponding to the fourth edge part, so that the first part can block the electrostatic charge invading from the setting area of ​​the first edge part, or block the electrostatic charge invading from the setting area of ​​the second edge part, or block the electrostatic charge invading from the setting area of ​​the third edge part, or block the electrostatic charge invading from the setting area of ​​the fourth edge part, reduce the electrostatic charge entering the display panel, reduce the impact of static electricity on the display panel, and improve 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, so that the electrostatic charges invading from the two edge parts can be blocked by the first part, the electrostatic charges 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 first part can block the electrostatic charges invading from the three edge parts, reduce the electrostatic charges entering the display panel, reduce the impact of static electricity on the display panel, and improve the yield of the display module.

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

[0050] In some embodiments, as Figure 4 、Figure 6 As shown, the first portion 321a is disposed correspondingly to the first edge portion 301a, the second edge portion 301b, the third edge portion 301c, and the fourth edge portion 301d, and is connected to the portions of the first portion 321a corresponding to the edge portions 211b. By disposing the first portion correspondingly to the first, second, third, and fourth edge portions, and connecting the first portion to the portions corresponding to the edge portions, the first portion can be disposed at least around the display panel, blocking the path for electrostatic charge to enter the interior of the display panel, preventing static electricity from affecting the normal display of the display panel, and improving the yield of the display module.

[0051] Specifically, such as 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 interior 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, as Figure 4 、 Figure 6 As shown, the first adhesive layer 321 also includes a second portion 321b, which is arranged correspondingly to the middle portion 211a. The impedance of the second portion 321b is lower than that of the first portion 321a, and at a preset temperature, the storage modulus of the second portion 321b decreases at a rate lower than that of the first portion 321a. By including the second portion in the first adhesive layer and arranging the second portion correspondingly to the middle portion, the impedance of the second portion is lower than that of the first portion, and at a preset temperature, the storage modulus of the second portion decreases at a rate lower than that of the first portion, the first portion can block static electricity charges from invading from all sides, preventing static electricity from affecting the normal display of the display panel and improving 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, such asFigure 4 As shown, Figure 4 (a) is a second planar schematic diagram 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 backplane, the material forming the second adhesive layer can be applied at the position corresponding to the middle part and the binding part, and the material forming the first part can be applied at the position corresponding to the edge part.

[0056] In some embodiments, as Figure 3 、 Figure 6 As shown, the first portion 321a is also arranged corresponding to the middle portion 211a. By arranging the first portion also corresponding to the middle portion, the impedance of the corresponding area of ​​the planar portion is increased, and static electricity charges 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, such as Figure 3 As shown, Figure 3 (a) is a first planar schematic diagram of the backplane and the adhesive layer. Figure 3 (b) in Figure 3 A1-A2 cross-sectional view of (a), from Figure 3 As can be seen in the figure, 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, as Figure 5As shown, the first portion 321a is disposed correspondingly to the first edge portion 301a, the second edge portion 301b, the third edge portion 301c, and the fourth edge portion 301d, and a gap exists 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 disposing the first portion correspondingly to the first, second, third, and fourth edge portions, the first portion can block electrostatic charges invading from the corresponding areas of the first, second, third, and fourth edge portions, preventing static electricity from affecting the normal display of the display panel and improving the yield of the display module.

[0060] Specifically, such as Figure 5 As shown, Figure 5 (a) is a third planar schematic diagram 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 the 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, such as 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 can 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 of decrease of the storage modulus of the insulating particles is greater than the rate of decrease of the storage modulus of the first substrate, the impedance of the first part can be increased by the insulating particles, and there is no need to set 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 greater impedance blocks static electricity at the corresponding position of the edge part, avoiding static electricity affecting the internal structure of the display panel, and the second adhesive layer with smaller impedance is set corresponding to the binding part, avoiding the addition of insulating particles in the second adhesive layer to cause poor stability, thereby improving the binding stability of the display module, and thus taking into account both the antistatic effect and binding stability of the display module.

[0063] In some embodiments, the first substrate comprises an acrylic material, and the insulating particles comprise rubber. By making the first substrate comprise acrylic and the insulating particles comprise rubber, the impedance of the first portion can be increased, enabling the first portion to block static electricity from invading the interior of the display panel. Furthermore, by omitting rubber from the second adhesive layer, the thermal stability of the second adhesive layer can be improved, thereby achieving both antistatic properties and binding stability for 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 adhesive 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 adhesive layer is better.

[0067] In some embodiments, as Figure 2As shown, the display module 2 further comprises a cover plate 26 and a glue layer 25, the cover plate 26 is arranged on the side of the display panel 21 away from the back plate 22, the glue layer 25 is arranged between the cover plate 26 and the display panel 21, and the impedance of the first part 411 is greater than the impedance of the glue layer 25. By making the impedance of the first part greater than the impedance of the glue layer, the first part can block the invasion of static electricity into the display panel, and even if static electricity charges invade the display panel from the side of the glue layer, the static electricity can be discharged due to the metal arranged on the side of the display panel close to the glue layer, thereby avoiding the influence of static electricity on the display panel and improving the yield of the display module.

[0068] Specifically, it can be understood that static electricity generally occurs on the upper surface of the cover plate 26 and then moves to various elements. Since the cover plate and the glue layer and other film layers are not affected by static electricity, static electricity can exist in the cover plate, the glue layer and other film layers, and the side of the display panel close to the cover plate is provided with metal or other conductive materials to discharge static electricity. The side of the display panel close to the back plate is a substrate and cannot discharge static electricity. Therefore, it is necessary to prevent static electricity from invading from 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 static electricity is released by other elements or the side of the display panel provided with conductive materials, thereby preventing static electricity from damaging the display panel and improving the yield of the display module.

[0069] Specifically, as shown in the first embodiment of the present application, Figure 2 As shown, the display module 2 further comprises a polarizer 24, the polarizer 24 is arranged between the display panel 21 and the glue layer 25, and the polarizer 24 and the display panel 21 can be bonded by another glue layer. At this time, the impedance of the first part can be made greater than the impedance of the glue layer between the polarizer and the display panel.

[0070] Specifically, as shown in the first embodiment of the present application, Figure 2 As shown, the display module 2 further comprises a composite layer 23, the composite layer 23 comprises a grid glue layer 231, a foam layer 232 and a heat dissipation layer 233, but the embodiments of the present application are 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 glue layer. At this time, the impedance of the first part can be made greater than the impedance of the glue layer between the composite layer and the back plate.

[0071] Specifically, as shown in the first embodiment of the present application, Figure 2 As shown, the display module 2 further comprises a double-sided adhesive 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 through the double-sided adhesive tape 27.

[0072] Specifically, as shown in the first embodiment of the present application, Figure 2 As shown, the display module 2 further comprises a driving chip 29, and the driving chip 29 is bound to the display panel.

[0073] Specifically, such as Figure 2 As shown, the display module 2 further includes a UV curing adhesive 31 , which is arranged corresponding to the bent portion 212 . The UV curing adhesive 31 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 backplane 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 display functions. 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 backplane 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 backplane 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, reducing the risk of static electricity damaging the display panel and improving the yield of the display module.

[0076] The above embodiments provide a detailed description of the display module from the perspective of each film layer and the combination of each film layer. 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 the 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 the 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 to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0079] In the above embodiments, the description of each embodiment has its own focus. 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 manners and related technical features of the present application can be combined with each other without conflict.

[0081] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment without departing from the technical solution of the present application and according to the technical essence of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A display module, characterized in that: include: The display panel includes a planar portion, a curved portion, and a binding portion, wherein the curved portion is disposed between the planar portion and the binding portion, and the planar portion includes a middle portion and an edge portion disposed 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, and 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 includes at least 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, wherein: 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, wherein: 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 portions of the first portion corresponding to the edge portions are connected.

4. The display module according to claim 3, wherein: 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, wherein: 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, wherein: The first substrate comprises acrylic material, and the insulating particles comprise rubber.

9. The display module according to claim 1, wherein: 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. The impedance of the first part is greater than the impedance of the glue layer.

10. A display device, characterized in that: Comprising the display module according to any one of claims 1 to 9.

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