Display module

Abstract

The present disclosure provides a display module, which includes a display panel and a support layer. The display panel includes a first non-bending area, a bending area, and a second non-bending area that are adjacent to each other in sequence. The support layer is located on the backlight side of the display panel, and the support layer includes a first part and a second part and a third part that are located on opposite sides of the first part and adjacent to the first part. The orthographic projection of the first part on the display panel at least covers the bending area. The first part, the second part, and the third part all include a first sub-support layer, and the first part also includes a second sub-support layer stacked with the first sub-support layer. By arranging a second sub-support layer with high rigidity in the first part corresponding to the bending area of ​​the support layer, this method can improve the rigidity of the first part of the support layer, and then better support can be provided to the bending area of ​​the display panel, which can improve the problem of creases on the display panel in the folding screen.

Description

Technical Field

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

[0002] In recent years, with the user's demand for large screens and portability and the development of flexible OLED display panel technology, foldable screens have emerged. Folding screens can store large screens by folding, which can meet the user's requirements for large screens and portability. However, foldable screens will have creases in the bending area, affecting the user experience. Summary of the invention

[0003] The present disclosure provides a display module, which includes a display panel and a supporting layer, the display panel includes a first non-bending area, a bending area and a second non-bending area which are adjacent to each other in sequence, the supporting layer is located on the backlight side of the display panel, and the position of the supporting layer corresponding to the bending area is set to a laminated structure of multiple layers of materials with different stiffnesses. This method can enhance the stiffness of the part of the supporting layer corresponding to the bending area, and thus can better provide support for the bending area of ​​the display panel, which can improve the problem of creases on the display panel in the folding screen and improve the display effect.

[0004] The present disclosure provides a display module, which includes a display panel and a support layer. The display panel includes a first non-bending area, a bending area, and a second non-bending area that are adjacent to each other in sequence. The support layer is located on the backlight side of the display panel, and includes a first part and a second part and a third part that are located on two opposite sides of the first part and adjacent to the first part. The orthographic projection of the first part on the display panel at least covers the bending area, the first part, the second part, and the third part all include a first sub-support layer, and the first part also includes a second sub-support layer stacked with the first sub-support layer, and the stiffness of the second sub-support layer is greater than the stiffness of the first sub-support layer.

[0005] By providing a second sub-support layer with high rigidity in the first part of the support layer corresponding to the bending area, the rigidity of the material in the second and third parts of the support layer is lower than the rigidity of the material in the first part. This method can ensure that the support layer has a better supporting effect on the bending area of ​​the display panel, thereby improving the problem of creases on the display panel and improving the user experience.

[0006] In a specific embodiment of the present disclosure, the number of the first sub-support layers includes two, and the second sub-support layer is located between the two first sub-support layers.

[0007] The second sub-support layer is arranged between two first sub-support layers, so as to avoid the first sub-support layer and the second sub-support layer from peeling off from each other.

[0008] In a specific embodiment of the present disclosure, the number of the first sub-support layers includes a plurality, the number of the second sub-support layers includes a plurality, and the first sub-support layers and the second sub-support layers are alternately stacked.

[0009] The first sub-support layer and the second sub-support layer are alternately stacked to ensure that stress distribution at each position of the support layer is uniform when a force is applied.

[0010] In a specific embodiment of the present disclosure, the number of first sub-support layers in the first part, the second part and the third part is the same.

[0011] In a specific embodiment of the present disclosure, the second sub-support layer includes a metal sheet; and the first sub-support layer includes carbon fibers.

[0012] For example, further, the carbon fibers of different first sub-support layers have different extending directions.

[0013] The different extension directions of the carbon fibers of the first sub-support layers of different layers can avoid inconsistent strength of the support layer in different directions. This method can improve the uniformity of the support layer and make the support layer have better mechanical properties.

[0014] In a specific embodiment of the present disclosure, the first sub-support layer of the first portion includes first through holes distributed at intervals.

[0015] For example, further, the orthographic projection of the first through hole on the display panel is located in the bending area.

[0016] Punching holes in the area of ​​the support plate corresponding to the bending area can reduce the equivalent modulus of the area of ​​the support plate corresponding to the bending area, so that the support plate has a bending-resistant performance.

[0017] In a specific embodiment of the present disclosure, the second sub-support layer includes a second through hole, and an orthographic projection of the second through hole on the display panel coincides with an orthographic projection of the first through hole on the display panel.

[0018] The second through hole overlaps with the first through hole, and the first through hole and the second through hole can be formed in the same punching process. This method can improve the generation efficiency of the support layer.

[0019] In a specific embodiment of the present disclosure, the display panel also includes a first transition region and a second transition region, the first transition region is located between the first non-bending region and the bending region, the second transition region is located between the bending region and the second non-bending region, and the orthographic projections of the first transition region, the bending region and the second transition region in the display panel on the display panel coincide with the orthographic projection of the first part on the display panel.

[0020] In a specific embodiment of the present disclosure, the support layer is symmetrical along the symmetry axis of the bending region, and the first portion is symmetrical along the symmetry axis of the bending region.

[0021] In a specific embodiment of the present disclosure, the first part, the second part and the third part each include three first sub-support layers, the first part also includes two second sub-support layers alternately stacked in sequence with the first sub-support layers, the first part, the second part and the third part have the same thickness, and the support layer has a symmetrical structure that is symmetrical along the thickness direction of the support layer.

[0022] For example, further, the two second sub-support layers have the same thickness and are symmetrical with respect to the first sub-support layer located between the two second sub-support layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic top view of a display module in an unfolded state provided by an embodiment of the present disclosure.

[0024] Figure 2 A cross-sectional schematic diagram of a display module in a bent state provided by an embodiment of the present disclosure.

[0025] Figure 3 A partial cross-sectional schematic diagram of a display module provided in one embodiment of the present disclosure.

[0026] Figure 4 A partial cross-sectional schematic diagram of a display module provided in one embodiment of the present disclosure.

[0027] Figure 5 A partial cross-sectional schematic diagram of a display module provided in one embodiment of the present disclosure.

[0028] Figure 6 A partial cross-sectional schematic diagram of a display module provided in one embodiment of the present disclosure.

[0029] Figure 7 A cross-sectional schematic diagram of a display module in a bent state provided by an embodiment of the present disclosure.

[0030] Figure 8 A partial cross-sectional schematic diagram of a display module provided in one embodiment of the present disclosure.

[0031] Fig. 9 A partial cross-sectional schematic diagram of a display module provided in one embodiment of the present disclosure.

[0032] Fig.10 A schematic top view of a display module in an unfolded state provided by an embodiment of the present disclosure.

[0033] Fig.11A partial cross-sectional schematic diagram of a display module provided in one embodiment of the present disclosure.

[0034] Fig.12 A partial cross-sectional schematic diagram of a display module provided in one embodiment of the present disclosure.

[0035] Fig.13 A schematic flow chart of a method for preparing a support layer provided in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0037] The expansion of the display area of ​​the foldable screen increases the overall weight of the mobile phone, making it inconvenient to carry. In order to reduce weight, each display module usually uses titanium alloy or carbon fiber reinforced resin (CFRP) materials with low density and high strength as the support plate in the current folding display panel. Due to the insufficient rigidity of the lightweight material, the support force of the support layer in the bending area is insufficient, and the display module has creases in the bending area. Therefore, the display effect of the existing display module is not good, affecting the user experience.

[0038] In view of this, at least one embodiment of the present disclosure provides a display module, which includes a display panel and a supporting layer, the display panel includes a first non-bending area, a bending area and a second non-bending area adjacent to each other in sequence, the supporting layer is located on the backlight side of the display panel, and the position of the supporting layer corresponding to the bending area is set to a stacked structure of multiple layers of materials with different stiffnesses to improve the problem of creases in the bending area of ​​the display module.

[0039] The specific structure of the display module in at least one embodiment of the present disclosure is described below in conjunction with the accompanying drawings. In these drawings, a spatial rectangular coordinate system is established with the surface where the display panel is located as a reference to illustrate the position of each structure in the display module. In this spatial rectangular coordinate system, the X-axis and the Y-axis are parallel to the surface where the display panel is located, the Z-axis is perpendicular to the surface where the display panel is located, and the positive direction of the Z-axis is the light emitting direction of the display panel.

[0040] Figure 1 A schematic diagram of a display module provided by an embodiment of the present disclosure. Figure 2 yes Figure 1 The cross-sectional view of the display module shown is in a bent state. Figure 3 yes Figure 1A schematic diagram of a cross-sectional view of area S1 along line AB. Figure 1-Figure 3 As shown, at least one embodiment of the present disclosure provides a display module 100 , which includes a display panel 110 and a support layer 120 .

[0041] In one implementation of at least one embodiment of the present disclosure, the display panel 110 may be a flexible display panel 110. For example, the display panel 110 may be a flexible organic electroluminescence display (OLED) screen.

[0042] like Figure 1-Figure 3 As shown, the display panel 110 includes a first non-bending region 111, a bending region 112, and a second non-bending region 113 that are adjacent to each other in sequence. The display panel 110 can be folded or unfolded along the bending region 112 to achieve the storage of a large-area display panel 110. In an optional embodiment, the display panel 110 is symmetrical with respect to a symmetry axis 116 parallel to the Y axis. Specifically, the symmetry axis of the bending region 112 coincides with the symmetry axis 116, the first non-bending region 111 and the second non-bending region 113 have the same size, and the first non-bending region 111 and the second non-bending region 113 are symmetrical with respect to the symmetry axis 116.

[0043] The display panel 110 is configured as a symmetrical structure, so that the size of the folded display panel 110 can be smaller and easier to carry, and the symmetrical structure can make the stress on the bending area 112 more uniform.

[0044] like Figure 3 As shown, the support layer 120 is located on the backlight side of the display panel 110. The support layer 120 is used to support and fix the display panel 110, and can play a role in supporting and protecting the display panel 110. Optionally, a film layer such as a support layer 120 and a buffer layer may be provided between the support layer 120 and the display panel 110.

[0045] Since the bending region 112 of the display panel 110 needs to be folded repeatedly for many times, the portion of the support layer 120 corresponding to the bending region 112 of the display panel 110 needs to have high flexibility and good rigidity to support the bending region 112 of the display panel 110. In the embodiment of the present disclosure, a second sub-support layer 125 with high rigidity is provided at the first portion 121 of the support layer 120 corresponding to the bending region 112, so that the rigidity of the material of the first portion 121 of the support layer 120 is greater than the rigidity of the material of the second portion 122 and the third portion 123, thereby improving the problem of creases in the bending region 112 of the display module 100 caused by insufficient support force of the support layer 120 in the bending region 112.

[0046] Combine the following Figures 4 to 12 The stacked structure of the support layer in at least one embodiment of the present disclosure is described.

[0047] Figure 4 and Figure 5 yes Figure 1 A schematic diagram of a cross-sectional view of area S1 along line AB. Figure 4 and Figure 5 As shown, the support layer 120 includes a first portion 121 and a second portion 122 and a third portion 123 located on opposite sides of the first portion 121 and adjacent to the first portion. Specifically, the first portion 121 corresponds to the bending region 112, the second portion 122 and the third portion 123 are located on both sides of the first portion 121, the second portion 122 corresponds to the first non-bending region 111, and the third portion 123 corresponds to the second non-bending region 113. The first portion 121, the second portion 122, and the third portion 123 each include at least one first sub-support layer 124, and the first portion 121 also includes at least one second sub-support layer 125 stacked with the first sub-support layer 124, and the stiffness of the second sub-support layer 125 is greater than the stiffness of the first sub-support layer 124.

[0048] By providing a second sub-support layer 125 with high rigidity at the first portion 121 of the support layer 120 corresponding to the bending region 112, the rigidity of the first portion 121 of the support layer 120 is greater than that of the second portion 122 and the third portion 123. This method can ensure that the support layer 120 has a better supporting effect on the bending region 112 of the display panel 110, thereby improving the problem of creases on the display panel 110 and improving the user experience.

[0049] Stiffness refers to the ability of a material to resist elastic deformation when subjected to force. Specifically, the stiffness of a workpiece is usually measured by its shape and the elastic modulus (also known as Young's modulus) of the material. The difference in elastic modulus between the second sub-support layer 125 and the first sub-support layer 124 may be 50GPa to 150GPa. For example, the elastic modulus of the first sub-support layer 124 may be 100Gpa to 200Gpa, and the elastic modulus of the second sub-support layer 125 may be 190Gpa to 250Gpa. More specifically, the difference in tensile strength between the second sub-support layer 125 and the first sub-support layer 124 may be 500MPa to 1000MPa, for example, the tensile strength of the first sub-support layer 124 is ≥800Mpa, and the elongation at break is ≥1%; the tensile strength of the second sub-support layer 125 is ≥1700Mpa, and the elongation at break is ≥2%. The hardness of the second sub-support layer 125 is ≥500Hv.

[0050] Optionally, the second sub-support layer 125 is a metal sheet. For example, the material of the metal sheet can be a high-strength and lightweight alloy such as stainless steel, titanium alloy, aluminum alloy, magnesium alloy, etc. The thickness of the metal sheet is 10 microns to 50 microns. If the thickness of the metal sheet is too thin, the rigidity of the first part 121 is low and it cannot play a good supporting role. If the thickness of the metal sheet is too thick, the rigidity of the first part 121 will be too high and it will not be easy to bend. If the thickness of the metal sheet is too thick, it will cause the rigidity of the first part 121 to be too high and it will not be easy to bend. If the metal sheet is too thick, it will not be conducive to the lightweight of the display module 100. Therefore, the thickness of the metal sheet is 10 microns to 50 microns, which can ensure that the rigidity of the first part 121 is within a suitable range without excessively increasing the weight of the display module 100.

[0051] The first sub-support layer 124 is carbon fiber, for example, the first sub-support layer 124 can be low modulus carbon fiber, medium modulus carbon fiber and high modulus carbon fiber. Further, in the case where there are two or more first sub-support layers 124, the extension directions of the carbon fibers of the first sub-support layers 124 of different layers are different. The different extension directions of the carbon fibers of the first sub-support layers 124 of different layers can avoid the inconsistent strength of the support layer 120 in different directions. This method can improve the uniformity of the support layer 120 and make the support layer 120 have better mechanical properties.

[0052] Specifically, the first part 121, the second part 122 and the third part 123 have the same number of layers of the first sub-support layer 124. The first part 121 has a second sub-support layer 125 disposed in the first sub-support layer 124. Although the number of layers in the first part 121 is greater than that in the second part 122, the support layer 120 is formed as a whole by lamination, and the overall thickness of the first part 121 and the second part 122 is the same, that is, the surface of the support layer 120 is flat. Due to the lamination, in the finally formed support layer 120, the thickness of the first sub-support layer 124 in the first part 121 is slightly smaller than the thickness of the first sub-support layer 124 in the second part 122.

[0053] The orthographic projection of the first portion 121 on the display panel 110 at least covers the bending area 112. Figure 4 As shown, the orthographic projection of the first portion 121 on the display panel 110 overlaps with the bending region 112. The first portion 121 of the support layer 120 and the bending region 112 have substantially the same area, which can enhance the support function of the support layer 120 while avoiding an increase in weight and thickness of the support layer 120 due to an excessively large size of the first portion 121. Therefore, this method can both increase the rigidity of the bending region 112 and achieve lightweighting of the display module 100.

[0054] In order to prevent stress concentration at the edge of the bending area 112 from causing fracture, in at least one embodiment of the present disclosure, as Figure 5As shown, the bending region 112 is located within the orthographic projection of the first portion 121 on the display panel 110. That is, the area of ​​the first portion 121 is slightly larger than the area of ​​the bending region 112.

[0055] Figure 6 yes Figure 1 Schematic diagram of a cross-sectional view of area S1 along line AB. Figure 7 yes Figure 1 The provided cross-sectional diagram of the display module in the folded state. Figure 6 and Figure 7 As shown, optionally, the display panel 110 further includes a first transition region 114 and a second transition region 115, the first transition region 114 is located between the first non-bending region 111 and the bending region 112, and the second transition region 115 is located between the bending region 112 and the second non-bending region 113. That is, the display panel 110 includes the first non-bending region 111, the first transition region 114, the bending region 112, the second transition region 115 and the second non-bending region 113 connected in sequence along the X-axis direction. The orthographic projection of the first transition region 114, the bending region 112 and the second transition region 115 in the display panel 110 on the display panel coincides with the orthographic projection of the first portion 121 on the display panel 110. That is, the sum of the areas of the first transition region 114, the bending region 112 and the second transition region 115 is substantially equal to the area of ​​the first portion 121.

[0056] When the display panel 110 is bent, the curvature of the first transition region 114 and the second transition region 115 is different from the curvature of the bending region 112. Optionally, the curvature of the first transition region 114 and the second transition region 115 is smaller than the curvature of the bending region 112. The dimensions of the first transition region 114 and the second transition region 115 along the X-axis direction are 5 mm to 10 mm, respectively. Optionally, the dimensions of the first transition region 114 and the second transition region 115 are the same and symmetrical with respect to the symmetry axis 116 of the display panel 110.

[0057] In at least one embodiment of the present disclosure, Figure 8As shown, in order to improve the interface bonding strength between the first sub-support layer 124 and the second sub-support layer 125 and prevent the first sub-support layer 124 and the second sub-support layer 125 from peeling off from each other, the number of the first sub-support layer 124 includes two, and the second sub-support layer 125 is located between the two first sub-support layers 124. In other words, the surface of the support layer 120 facing the display panel 110 and the surface away from the display panel 110 are both set as the first sub-support layer 124 with smaller rigidity, and the second sub-support layer 125 is set between the two first sub-support layers 124 to form a sandwich structure stack. For example, a second sub-support layer 125 is set between two first sub-support layers 124, which can prevent the first sub-support layer 124 and the second sub-support layer 125 from peeling off from each other.

[0058] In at least one embodiment of the present disclosure, Fig. 9 As shown, in order to further improve the interface bonding strength between the first sub-support layer 124 and the second sub-support layer 125 and avoid the first sub-support layer 124 and the second sub-support layer 125 from peeling off each other, the number of the first sub-support layer 124 includes a plurality, the number of the second sub-support layer 125 includes a plurality, and the first sub-support layer 124 and the second sub-support layer 125 are alternately stacked. The first sub-support layer 124 and the second sub-support layer 125 are alternately stacked so that the stress distribution at each position of the support layer 120 is uniform when a force is applied.

[0059] Specifically, the first part 121, the second part 122 and the third part 123 each include three first sub-support layers 124, the first part 121 also includes two second sub-support layers 125 alternately stacked with the first sub-support layers 124, the first part 121, the second part 122 and the third part 123 have the same thickness, and the support layer 120 has a symmetrical structure symmetrical along the thickness direction of the support layer 120. Optionally, the two second sub-support layers 125 have the same thickness and are symmetrical with respect to the first sub-support layer 124 located between the two second sub-support layers 125. That is, in the Z-axis direction,

[0060] Optionally, the directions of the carbon fibers of two adjacent first sub-support layers 124 among the three first sub-support layers 124 are perpendicular to each other, for example, the direction of the carbon fibers of the first sub-support layer 124 located in the middle is parallel to the direction of the X-axis, and the directions of the carbon fibers of the two first sub-support layers 124 located on the surface of the support layer 120 are parallel to the direction of the Y-axis. The direction of the carbon fibers being parallel to the direction of the X-axis can ensure the strength of the support layer 120, and the direction of the carbon fibers being parallel to the direction of the Y-axis can make the support layer 120 more flexible. By making the directions of the carbon fibers of the first sub-support layers 124 of different layers perpendicular to each other, the strength inconsistency of the support layer 120 in different directions can be avoided. This method can improve the uniformity of the support layer 120 and make the support layer 120 have better mechanical properties.

[0061] Fig.10 A schematic top view of a display module in an unfolded state provided by an embodiment of the present disclosure. Fig.11 and Fig.12 yes Fig.10 A schematic cross-sectional view of region S2 along line CD. Fig.10 and Fig.11 As shown, in at least one embodiment of the present disclosure, in order to reduce the elastic modulus of the first portion 121 of the support plate, the first sub-support layer 124 of the first portion 121 includes a plurality of first through holes 126 distributed at intervals, and preferably, the orthographic projections of the plurality of first through holes 126 on the display panel 110 are located within the bending region 112. Punching holes in the region of the support plate corresponding to the bending region 112 can reduce the equivalent modulus of the region of the support plate corresponding to the bending region 112, so that the support plate has a bending resistance performance.

[0062] Optionally, the second sub-support layer 125 includes a second through hole 127, and the orthographic projection of the second through hole 127 on the display panel 110 coincides with the orthographic projection of the first through hole 126 on the display panel 110. The second through hole 127 is connected to the first through hole 126, and the first through hole 126 and the second through hole 127 can be formed in the same punching process, which can improve the production efficiency of the support layer 120.

[0063] like Fig.10 and Fig.12 As shown, the bending area is uniformly punched, and the first through hole 126 and the second through hole 127 are made by the same laser or etching process. The present disclosure illustrates that the shape of the first through hole 126 and the shape of the second through hole 127 are both circular. Optionally, the shape of the first through hole 126 and the shape of the second through hole 127 can also be elliptical, rectangular, etc.

[0064] It should be understood that when there are more than two first sub-supporting layers 124, the thickness of each first sub-supporting layer 124 may be the same or different, and when there are more than two second sub-supporting layers 125, the thickness of each second sub-supporting layer 125 may be the same or different. The present disclosure is not intended to limit the thickness of the first sub-supporting layer 124 and the second sub-supporting layer 125.

[0065] At least one embodiment of the present disclosure provides a method for preparing a support layer. Fig.13 The following is a schematic diagram of a method for preparing a support layer according to an embodiment of the present disclosure. Fig.13 As shown, to form Fig.12 The supporting layer 120 shown is taken as an example to illustrate the preparation method of the supporting layer 120 of the present disclosure. Specifically, the preparation method of the supporting layer 120 provided in the embodiment of the present disclosure includes the following steps 310 to 380.

[0066] 310: Laying the material of the first sub-support layer 124;

[0067] 320: Laying the second sub-support layer 125;

[0068] 330: Laying the material of the first sub-support layer 124;

[0069] 340: Laying the second sub-support layer 125;

[0070] 350: Laying the material of the first sub-support layer 124;

[0071] 360: hot pressing;

[0072] 370: cutting;

[0073] 380: Punching.

[0074] Specifically, the material of the first sub-support layer 124 is a carbon fiber prepreg, which is carbon fiber after hot pressing and curing, that is, the first sub-support layer 124. Commonly used carbon fiber prepreg models include T700 (low modulus) / T800 (medium modulus) / M40 (high modulus) and the like. Optionally, the direction of the carbon fiber filaments provided in step 310 and step 350 is parallel to the Y-axis direction, and the material of the prepreg provided in step 310 and step 350 is the same, and the carbon fiber filaments provided in step 330 are parallel to the X-axis direction. The second sub-support layer 125 provided in step 320 and step 340 is a metal sheet, and the thickness and material of the metal sheet provided in step 320 and step 340 are the same. In step 360, hot pressing molding is specifically to hot press the multi-layered carbon fiber prepreg and the metal sheet to a predetermined thickness to form a support layer 120 with a flat surface alternately stacked by the first sub-support layer 124 and the second sub-support layer 125. Optionally, after forming the support layer 120, the outer periphery of the support layer 120 is cut into a predetermined size, and a through hole is formed at a position corresponding to the bending area of ​​the support layer 120 and the display panel 110. Cutting can be performed by laser cutting, and punching can be performed by laser or etching.

[0075] An embodiment of the present disclosure provides an electronic device, specifically, the electronic device can be any of various types of computer system devices that are mobile or portable and perform wireless communication. In some cases, the electronic device can perform multiple functions (for example, playing music, displaying videos, storing pictures, and receiving and sending phone calls). Specifically, the electronic device can be a smart phone, a portable game device, a laptop, a PDA, a portable Internet device, a music player, and a data storage device, other handheld devices, and headphones, etc. The electronic device can also be other wearable devices that need to be charged (for example, smart watches).

[0076] The electronic device may include, but is not limited to, a display module and a housing assembly. The housing assembly may include a folding shaft and a first housing and a second housing connected at both ends of the folding shaft, so that the housing assembly can be unfolded or folded.

[0077] The electronic device provided according to the embodiment of the present disclosure and the display module provided according to the embodiment of the present disclosure belong to the same inventive concept, and have corresponding film layer structures and beneficial effects. Details not fully described in the embodiment of the electronic device can be found in the embodiment of the display module, and will not be repeated here.

[0078] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A display module, It is characterized in that include: The display panel comprises a first non-bending area, a bending area, and a second non-bending area adjacent to each other in sequence; a supporting layer, located at the backlight side of the display panel, comprising a first portion, and a second portion and a third portion located at two opposite sides of the first portion and adjacent to the first portion, wherein the orthographic projection of the first portion on the display panel at least covers the bending area, the first portion, the second portion and the third portion all comprise a first sub-supporting layer, the first portion further comprises a second sub-supporting layer stacked with the first sub-supporting layer, and the second sub-supporting layer has a stiffness greater than that of the first sub-supporting layer; The first sub-support layer of the first part comprises first through holes distributed at intervals, and the orthographic projections of the first through holes on the display panel are located in the bending area; The second sub-support layer comprises a second through hole, and an orthographic projection of the second through hole on the display panel coincides with an orthographic projection of the first through hole on the display panel; The support layer is formed by pressing.

2. The display module according to claim 1, It is characterized in that The number of the first sub-support layers includes two, and the second sub-support layer is located between the two first sub-support layers.

3. The display module according to claim 1, It is characterized in that The number of the first sub-support layers includes a plurality, the number of the second sub-support layers includes a plurality, and the first sub-support layers and the second sub-support layers are alternately stacked.

4. The display module according to claim 1, It is characterized in that The first portion, the second portion and the third portion have the same number of first sub-support layers.

5. The display module according to any one of claims 1 to 4, It is characterized in that The second sub-support layer comprises a metal sheet; The first sub-support layer comprises carbon fibers, The carbon fibers of different layers of the first sub-supporting layers extend in different directions.

6. The display module according to any one of claims 1 to 4, It is characterized in that The display panel also includes a first transition region and a second transition region, the first transition region is located between the first non-bending region and the bending region, and the second transition region is located between the bending region and the second non-bending region, wherein the orthographic projections of the first transition region, the bending region and the second transition region on the display panel coincide with the orthographic projection of the first part on the display panel.

7. The display module according to any one of claims 1 to 4, It is characterized in that The support layer is symmetrical along the symmetry axis of the bending region, and the first portion is symmetrical along the symmetry axis of the bending region.

8. The display module according to any one of claims 1 to 4, It is characterized in that The first part, the second part and the third part each include three first sub-support layers, and the first part also includes two second sub-support layers alternately stacked with the first sub-support layers. The thicknesses of the first part, the second part, and the third part are the same, and the support layer has a symmetric structure that is symmetric along the thickness direction of the support layer. The thicknesses of the two second sub-support layers are the same and are symmetric with respect to the first sub-support layer located between the two second sub-support layers.

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