Display module and display terminal

Abstract

A display module (1) and a display terminal (2). The display module (1) comprises a bendable portion (10). The display module (1) comprises a display panel (30) and a support layer (40), wherein the support layer (40) comprises a first sub-layer (41) provided with a plurality of first hollow holes (411) and a second sub-layer (42) provided with a plurality of second hollow holes (421); and the first hollow holes (411) and the second hollow holes (421) are both elongated, and the extension direction of the long side of each elongated first hollow hole (411) and the extension direction of the long side of each elongated second hollow hole (421) form an angle.

Description

Display modules and display terminals

[0001] This application claims priority to Chinese patent application No. 202411190602.8, filed on August 28, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, and in particular to display modules and display terminals. Background Technology

[0003] Flexible display modules can be unfolded or folded as needed, making them suitable for different display scenarios. They are also easy to carry when folded, which makes them popular with consumers.

[0004] A flexible display module includes a display panel and a support layer disposed on one side of the display panel. The display panel is used to display images, and the support layer is used to protect and support the display panel. The support layer needs to be flexible to meet bending reliability requirements; it also needs to have a certain degree of rigidity to protect the display panel when the display module is subjected to external impact, meeting mechanical reliability requirements. However, the support layers in related technologies often fail to simultaneously meet both bending reliability and mechanical reliability requirements.

[0005] Therefore, it is urgent to solve the above-mentioned technical problems. Invention Overview

[0006] This application provides a display module and a display terminal to solve the technical problem that flexible display modules cannot simultaneously meet the requirements of bending reliability and mechanical reliability.

[0007] To solve the above-mentioned technical problems, the technical solution provided in this application is as follows:

[0008] This application provides a display module, the display module including a bent portion and a non-bent portion disposed on at least one side of the bent portion, the display module including:

[0009] Display panel;

[0010] A support layer is disposed on the side of the display panel away from the light emission direction of the display panel. The support layer includes a first sub-layer and a second sub-layer stacked together. The first sub-layer has a plurality of first hollow holes in the area corresponding to the bending part, and the second sub-layer has a plurality of second hollow holes in the area corresponding to the bending part.

[0011] The bent portion and the non-bent portion are arranged along a first direction, and the bent portion is bent around the central axis of the bent portion; the first hollow hole and the second hollow hole are both elongated, the long side of the elongated shape of the first hollow hole extends along a second direction, the long side of the elongated shape of the second hollow hole extends along the first direction, and the first direction and the second direction are set at an angle.

[0012] This application also provides a display terminal, the display terminal including a display module, the display module including a bent portion and a non-bent portion disposed on at least one side of the bent portion, the display module including:

[0013] Display panel;

[0014] A support layer is disposed on the side of the display panel away from the light emission direction of the display panel. The support layer includes a first sub-layer and a second sub-layer stacked together. The first sub-layer has a plurality of first hollow holes in the area corresponding to the bending part, and the second sub-layer has a plurality of second hollow holes in the area corresponding to the bending part.

[0015] The bent portion and the non-bent portion are arranged along a first direction, and the bent portion is bent around the central axis of the bent portion; the first hollow hole and the second hollow hole are both elongated, the long side of the elongated shape of the first hollow hole extends along a second direction, the long side of the elongated shape of the second hollow hole extends along the first direction, and the first direction and the second direction are set at an angle. Attached Figure Description

[0016] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0017] Figure 1A is a top view of a display module in a flattened state according to an embodiment of this application;

[0018] Figure 1B is a schematic diagram of the bent state structure of a display module provided in an embodiment of this application;

[0019] Figure 2 is a schematic diagram of a cross-sectional structure at point CC in Figure 1A;

[0020] Figure 3 is a top view of the first sublayer structure provided in an embodiment of this application;

[0021] Figure 4 is a top view of the second sublayer structure provided in an embodiment of this application;

[0022] Figure 5 is a top view of the structure after the first sub-layer and the second sub-layer are stacked according to an embodiment of this application;

[0023] Figure 6 is a schematic diagram of another cross-sectional structure at point CC in Figure 1A;

[0024] Figure 7 shows the stress simulation results of a display module according to this application;

[0025] Figure 8 shows the stress simulation results of another display module of this application;

[0026] Figure 9 is a schematic diagram of the structure of a display terminal provided in an embodiment of this application. Embodiments of the present invention

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in its actual use or working state, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0028] As shown in Figures 1A to 4, this application provides a display module 1. The display module 1 includes a bent portion 10 and a non-bent portion 20 disposed on at least one side of the bent portion 10. The display module 1 includes a display panel 30 and a support layer 40. The support layer 40 is disposed on the side of the display panel 30 away from the light emission direction of the display panel 30. The support layer 40 includes a first sub-layer 41 and a second sub-layer 42 stacked together. The first sub-layer 41 is provided with a plurality of first hollow holes 411 in the area corresponding to the bent portion 10. The second sub-layer... 42 A plurality of second hollow holes 421 are provided in the area corresponding to the bent portion 10; wherein, the bent portion 10 and the non-bent portion 20 are arranged along the first direction D1, and the bent portion 10 is bent around the central axis 110 of the bent portion 10; the first hollow hole 411 and the second hollow hole 421 are both elongated, and the long side of the elongated shape of the first hollow hole 411 extends along the second direction D2, and the long side of the elongated shape of the second hollow hole 421 extends along the first direction D1, and the first direction D1 and the second direction are set at an angle D2.

[0029] In this embodiment, display module 1 is a flexible display module, which can be folded or bent. Display module 1 can be an OLED panel, a Mini-LED panel, a Micro-LED panel, etc.

[0030] In this embodiment, as shown in FIG1A, the display module 1 includes a display area AA and a non-display area NA. The display area AA is used to display images. The display area AA is provided with multiple light-emitting units (not shown in the figure), which can be light-emitting elements such as OLED, Mini-LED, and Micro-LED. The light-emitting units include red light-emitting units, green light-emitting units, and blue light-emitting units, thereby realizing color display. The non-display area NA can be provided with a driving circuit, such as a gate driving circuit, which is used to provide driving signals to the light-emitting units.

[0031] In this embodiment, as shown in FIG1A, the display module 1 includes a bent portion 10 and a non-bent portion 20, with the non-bent portion 20 disposed on at least one side of the bent portion 10. The bent portion 10 can be bent around its central axis 110. The display module 1 can be folded inward, outward, or in half, etc.

[0032] In this embodiment, as shown in FIG2, the display module 1 includes a display panel 30 and a support layer 40. The display panel 30 includes light-emitting units, etc., and one side surface of the display panel 30 can display an image. The support layer 40 is disposed on the side of the display panel 30 opposite to the light-emitting direction, that is, the support layer 40 is disposed on the side surface of the display panel 30 that does not display an image.

[0033] The display panel 30 can have the same settings for the bent portion 10 and the non-bent portion 20. The support layer 40 has different settings for the bent portion 10 and the non-bent portion 20.

[0034] Specifically, the support layer 40 includes a first sub-layer 41 and a second sub-layer 42. Both the first sub-layer 41 and the second sub-layer 42 have hollow patterns in the areas corresponding to the bending portion 10. The first sub-layer 41 has a first hollow hole 411 and the second sub-layer 42 has a second hollow hole 421.

[0035] As shown in Figures 3 and 4, both the first perforated hole 411 and the second perforated hole 421 are elongated. This means that the length of the first perforated hole 411 in one direction is greater than the width of the first perforated hole 411 in the direction perpendicular to that direction, and the length of the second perforated hole 421 in one direction is greater than the width of the second perforated hole 421 in the direction perpendicular to that direction.

[0036] The long side of the elongated shape of the first hollow hole 411 can extend along the second direction D2, and the short side of the elongated shape of the first hollow hole 411 can extend along the first direction D1; similarly, the long side of the elongated shape of the second hollow hole 421 can extend along the first direction D1, and the short side of the elongated shape of the second hollow hole 421 can extend along the second direction D2. This means that the extension directions of the long side of the first hollow hole 411 and the elongated side of the second hollow hole 421 are different, and the extension directions of the short side of the first hollow hole 411 and the elongated side of the second hollow hole 421 are also different. Through this configuration, the modulus of the sublayer is low along the long side of the hollow hole, which meets the bending reliability requirements; and the modulus of the sublayer is high along the short side of the hollow hole, which meets the mechanical reliability requirements. Since the long side directions of the perforations in the first sub-layer 41 and the second sub-layer 42 are different, the equivalent modulus of the display module 1 in the first direction D1 and the second direction D2 can be increased simultaneously, thereby improving the mechanical reliability of the display module 1. This allows the support layer 40 to simultaneously meet the requirements of bending reliability and mechanical reliability.

[0037] In this embodiment, the first sub-layer 41 and the second sub-layer 42 are stacked, and the sidewalls of the first sub-layer 41 can be flush with the sidewalls of the second sub-layer 42. Both the first sub-layer 41 and the second sub-layer 42 are flat structures, and the planes with the largest areas of the first sub-layer 41 and the second sub-layer 42 are parallel to the display surface of the display panel 30. The sidewall of the first sub-layer 41 refers to the surface connecting the two opposite surfaces with the largest areas of the first sub-layer 41. The sidewall of the second sub-layer 42 refers to the surface connecting the two opposite surfaces with the largest areas of the second sub-layer 42.

[0038] In this embodiment, the size of the first cutout hole 411 can be the same as or different from the size of the second cutout hole 421. The first cutout hole 411 may include multiple elongated holes of the same size or multiple elongated holes of different sizes, requiring only that the long sides of the elongated holes extend in the same direction. Similarly, the second cutout hole 421 may include multiple elongated holes of the same size or multiple elongated holes of different sizes, requiring only that the long sides of the elongated holes extend in the same direction.

[0039] The spacing between two adjacent perforations, and the length and width of each perforation can be set as needed. The length of a perforation refers to the length of its longer side, and the width refers to the length of its shorter side.

[0040] In this embodiment, the included angle between the first direction D1 and the second direction D2 is greater than 0 degrees and less than or equal to 90 degrees. Exemplarily, the included angle between the first direction D1 and the second direction D2 can be 0 degrees, 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, 90 degrees, etc. When the included angle between the first direction D1 and the second direction D2 is 90 degrees, the second direction D2 is parallel to the central axis 110.

[0041] In the display module 1 of this application, as shown in Figures 2 to 4, the second sub-layer 42 is disposed on the side of the first sub-layer 41 away from the light emission direction of the display panel 30. The long side of the first cutout hole 411 extends along the second direction D2, and the long side of the second cutout hole 421 extends along the first direction D1. The thickness h2 of the second sub-layer 42 is less than or equal to the thickness h1 of the first sub-layer 41.

[0042] In this embodiment, the second sub-layer 42 is disposed on the side of the first sub-layer 41 away from the light emission direction of the display panel 30, that is, the first sub-layer 41 is closer to the display panel 30, and the second sub-layer 42 is located on the side of the first sub-layer 41 away from the display panel 30.

[0043] In this embodiment, as shown in FIG3, the long side of the elongated first hollow hole 411 extends along the second direction D2, and the short side of the elongated first hollow hole 411 extends along the first direction D1. The spacing between two adjacent columns of first hollow holes 411 can be equal, and two adjacent columns of first hollow holes 411 can be staggered. The staggered arrangement means that the centers of two adjacent columns of first hollow holes 411 can be offset, that is, the connection between the centers of two adjacent columns of first hollow holes 411 can be not parallel to the first direction D1.

[0044] Optionally, in some embodiments, the spacing between two adjacent columns of first hollow holes 411 is reduced in the direction from the non-bent portion 20 to the bent portion 10, thereby further reducing the modulus near the central axis 110 and further improving the bending reliability of the display module 1.

[0045] In this embodiment, as shown in Figure 4, the long side of the elongated shape of the second hollow hole 421 extends along the first direction D1, and the short side of the elongated shape of the second hollow hole 421 extends along the second direction D2. The spacing between two adjacent rows of first hollow holes 411 can be equal, and two adjacent rows of first hollow holes 411 can be staggered. Staggered arrangement means that the centers of two adjacent rows of second hollow holes 421 can be offset, that is, the connection between the centers of two adjacent rows of second hollow holes 421 can be not parallel to the second direction D2.

[0046] In this embodiment, the thickness h2 of the second sub-layer 42 is set to be less than the thickness h1 of the first sub-layer 41. Since the long side of the elongated first perforation 411 extends along the second direction D2, when the thickness h1 of the first sub-layer 41 is thicker, the bending performance of the first sub-layer 41 can be improved, thereby improving the bending reliability of the display module 1.

[0047] In some embodiments, the display module 1 can be inwardly folded, meaning that after folding, the display panel 30 is located on the inside, and the display panel 30 can be protected by the support layer 40 when subjected to external impact. Since the thicker the material, the stronger the impact resistance, by setting the thickness h2 of the second sub-layer 42 to be greater than the thickness h1 of the first sub-layer 41, the impact resistance of the display module 1 can be improved, and the mechanical reliability of the display module 1 can be enhanced.

[0048] In some embodiments, the thickness h2 of the second sub-layer 42 is equal to the thickness h1 of the first sub-layer 41. With the above setting, the bending reliability and mechanical reliability of the display module 1 can be balanced.

[0049] As shown in Figure 6, the embodiment in Figure 6 differs from the embodiment in Figure 2 in the positions of the first sub-layer 41 and the second sub-layer 42 in the display module 1 of this application. The first sub-layer 41 is disposed on the side of the second sub-layer 42 opposite to the light-emitting direction of the display panel 30. The long side of the elongated shape of the first cutout hole 411 extends along the second direction D2, and the long side of the elongated shape of the second cutout hole 421 extends along the first direction D1.

[0050] In this embodiment, the first sub-layer 41 is disposed on the side of the second sub-layer 42 away from the light emission direction of the display panel 30, that is, the second sub-layer 42 is closer to the display panel 30, and the first sub-layer 41 is located on the side of the first sub-layer 41 away from the display panel 30.

[0051] In this embodiment, the display module 1 can be inwardly folded, meaning that after folding, the display panel 30 is located on the inside. When subjected to external impact, the display panel 30 can be protected by the support layer 40. Since the thicker the material, the stronger the impact resistance, by making the thickness h1 of the first sub-layer 41 greater than or equal to the thickness h2 of the second sub-layer 42, the impact resistance of the display module can be improved, and the mechanical reliability of the display module can be enhanced.

[0052] Meanwhile, since the long side of the elongated shape of the first hollow hole 411 in the first sub-layer 41 extends along the second direction D2, and the second direction D2 is parallel to the central axis 110 of the bending portion 10, when the thickness h1 of the first sub-layer 41 is greater than the thickness h2 of the second sub-layer 42, the bending risk of the first sub-layer 41 is lower than that of the second sub-layer 42. Therefore, the bending reliability of the display module 1 can be further improved through the above settings.

[0053] In this embodiment, the arrangement of the first hollow hole 411 and the second hollow hole 421 can refer to the above embodiment, and will not be repeated here.

[0054] In the display module 1 of this application, as shown in Figures 2 to 5, the first perforated hole 411 and the second perforated hole 421 at least partially do not overlap. That is to say, the orthographic projection pattern of the first perforated hole 411 on the second sub-layer 42 does not at least partially overlap with the pattern of the second perforated hole 421, and the orthographic projection pattern of the second perforated hole 421 on the first sub-layer 41 does not at least partially overlap with the pattern of the first perforated hole 411. Through this arrangement, the first perforated hole 411 can overlap with the non-perforated area of ​​the second sub-layer 42, and the second perforated hole 421 can overlap with the non-perforated area of ​​the first sub-layer 41. This allows the non-perforated areas of the first sub-layer 41 and the second sub-layer 42 to reinforce each other, increasing the impact resistance of the display module 1. Simultaneously, since the first perforated hole 411 and the second perforated hole 421 at least partially do not overlap, dust can be prevented from entering the display panel 30 to a certain extent.

[0055] In the display module 1 of this application, as shown in Figures 2 to 5, the first direction D1 is perpendicular to the second direction D2, and any first cutout hole 411 overlaps with at least one second cutout hole 421.

[0056] In this embodiment, the orthographic projection pattern of any first cutout hole 411 on the display surface of the display module 1 partially overlaps with the orthographic projection pattern of at least one second cutout hole 421 on the display surface; that is, the cutout areas of any first cutout hole 411 and at least one second cutout hole 421 can partially overlap. Through this arrangement, the first cutout hole 411 and the second cutout hole 421 can intersect each other, thereby improving the bending reliability of the display module 1.

[0057] In the display module 1 of this application, as shown in Figures 3 and 4, the elongated pattern includes a first semi-circular cutout structure, a rectangular cutout structure, and a second semi-circular cutout structure connected sequentially along the long side of the elongated pattern. The diameters of the first and second semi-circular cutout structures are equal to the width of the rectangle in the rectangular cutout structure. The diameter of the first semi-circular cutout structure is collinear with one side of the rectangular cutout structure, and the diameter of the second semi-circular cutout structure is collinear with the other short side of the rectangular cutout structure.

[0058] By setting semi-circular perforations at both ends of the rectangular perforated structure, the stress at both ends of the long side of the perforated hole can be reduced, thereby reducing the risk of breakage of the support layer 40 during repeated bending and flattening.

[0059] In the display module 1 of this application, as shown in Figures 3 and 4, adjacent first hollow holes 411 are staggered along the first direction D1, and adjacent second hollow holes 421 are staggered along the second direction D2.

[0060] In this embodiment, as shown in Figure 3, adjacent first perforated holes 411 are staggered in the first direction D1, meaning the line connecting the center of the first perforated hole 411 in the Nth column and the center of the first perforated hole 411 in the (N+1)th column is not parallel to the first direction D1. Here, N is a positive integer. Adjacent first perforated holes 411 are spaced apart in the second direction D2, and the spacing between two adjacent first perforated holes 411 in the second direction D2 can be equal, thereby making the stress distribution in the second direction D2 more uniform.

[0061] In this embodiment, as shown in Figure 4, adjacent second perforated holes 421 are staggered in the second direction D2, meaning that the line connecting the center of the second perforated hole 421 in the Nth row and the center of the second perforated hole 421 in the (N+1)th column is not parallel to the second direction D2. Here, N is a positive integer. Adjacent second perforated holes 421 are spaced apart in the first direction D1, and the spacing between two adjacent second perforated holes 421 in the first direction D1 can be equal, thereby making the stress distribution in the first direction D1 more uniform.

[0062] Optionally, in some embodiments, as shown in FIG4, the second perforated hole 421 may include a first length hole and a second length hole, wherein the length of the first length hole is different from the length of the second length hole.

[0063] In the display module 1 of this application, as shown in Figures 2 and 6, the thickness h1 of the first sub-layer 41 is less than or equal to the thickness of the display panel 30, and the thickness h2 of the second sub-layer 42 is less than or equal to the thickness of the display panel 30.

[0064] In this embodiment, the thickness h2 of both the first sub-layer 41 and the second sub-layer 42 is less than the thickness of the display panel 30. This design allows for thinning of the support layer 40, reducing its thickness, material usage, and product cost. Furthermore, since both the first and second perforated holes 411 and 421 are through holes, a full etching process can be used to fabricate them. Compared to related technologies that fabricate some through holes and some blind holes on the same support structure, this reduces the number of processes required, further lowering etching costs.

[0065] It should be noted that while increasing the thickness of the support layer 40 of the display module 1 can improve its impact resistance, given the current trend towards thinner and lighter display modules, increasing the thickness of the support layer 40 alone cannot improve its impact resistance. In this application, although a first sub-layer 41 and a second sub-layer 42 are provided, the total thickness of the two sub-layers is still less than the thickness of the support structure in related technologies. In related technologies, the thickness of the support structure is typically 120 to 150 micrometers. Therefore, the embodiment of this application achieves increased impact resistance of the support layer 40 while reducing thickness and weight.

[0066] In the display module 1 of this application, the thickness h1 of the first sublayer 41 ranges from 20 micrometers to 45 micrometers, and the thickness h2 of the second sublayer 42 ranges from 20 micrometers to 45 micrometers.

[0067] In the display module 1 of this application, as shown in Figures 2 and 6, the support layer 40 further includes an adhesive layer 43 disposed between the first sub-layer 41 and the second sub-layer 42, the edge of the adhesive layer 43 not extending beyond the edge of the first sub-layer 41 and the edge of the second sub-layer 42.

[0068] In this embodiment, as shown in Figures 2 and 6, the adhesive layer 43 can be a viscous material, such as pressure-sensitive adhesive or optical adhesive. The adhesive layer 43 can be disposed entirely between the first sub-layer 41 and the second sub-layer 42, and the edge of the adhesive layer 43 does not extend beyond the edges of the first sub-layer 41 and the second sub-layer 42. The adhesive layer 43 serves two purposes: firstly, it connects the first sub-layer 41 and the second sub-layer 42; secondly, it absorbs the stress of the support layer 40 during bending, reducing the risk of breakage of the first sub-layer 41 and the second sub-layer 42.

[0069] In this embodiment, the thickness of the adhesive layer 43 can be greater than zero and less than or equal to 30 micrometers.

[0070] In this embodiment, the thickness of the support layer 40 is less than or equal to twice the thickness of the display panel 30.

[0071] As shown in Figures 2 and 6, the display module 1 of this application further includes a touch layer 60 and an encapsulation layer 70. The encapsulation layer 70 is disposed on the side of the display panel 30 facing the light emission direction, and the touch layer 60 is disposed on the side of the encapsulation layer 70 facing away from the display panel 30.

[0072] In this embodiment, as shown in Figures 2 and 6, the display module 1 includes an encapsulation layer 70, which can be disposed on the light-emitting side of the display panel 30. The encapsulation layer 70 is used to encapsulate and protect the light-emitting units in the display panel 30, preventing moisture and other contaminants from entering the light-emitting units and affecting their lifespan. The encapsulation layer 70 can be formed by alternating layers of one or more organic layers and one or more inorganic layers. The inorganic layers can be single or multiple layers of metal oxides or metal nitrides, such as silicon nitride, aluminum oxide, silicon oxide, etc. The organic layers can be single or multiple layers formed of any one of polyethylene terephthalate, polyimide, polycarbonate, epoxy resin, polyethylene, and polyacrylate.

[0073] In this embodiment, as shown in Figures 2 and 6, the display module 1 includes a touch layer 60. The touch layer 60 is disposed on the side of the encapsulation layer 70 opposite to the display panel 30, or on the side of the encapsulation layer 70 closer to the display panel 30. The touch layer 60 can be a DOT (Direct on-cell touch) configuration, eliminating the need for a separate external touch structure, thereby effectively reducing the thickness of the display module 1 and lowering product costs.

[0074] In the display module 1 of this application, the material of the support layer 40 includes stainless steel, etc. Stainless steel has a low cost, which can reduce the overall cost of the display module 1.

[0075] As shown in Figures 7 and 8, Figure 7 shows the stress simulation results of display module 1 in Figure 6 during a mechanical reliability test. Figure 8 shows the stress simulation results of display module 1 in Figure 2 during a mechanical reliability test. The mechanical reliability test mainly tests the impact resistance of display module 1. This application uses a pendulum impact test as an example for mechanical simulation. The horizontal axis corresponds to the touch layer 60, encapsulation layer 70, and display panel 30 of display module 1, and the vertical axis represents the stress magnitude of each corresponding film layer. The bar chart with cross-sections on the left is a comparative example provided by this application, and the bar chart without cross-sections on the right is an embodiment provided by this application. The comparative example is a first sub-layer 41 with double-layer stacking, while the embodiment of this application is a first sub-layer 41 and a second sub-layer 42 with stacking. The only difference between Figures 7 and 8 is the stacking order of the first sub-layer 41 and the second sub-layer 42.

[0076] As shown in Figure 7, in the embodiments of this application, the stresses of the touch layer 60, encapsulation layer 70, and display panel 30 are all lower than those in the comparative example. The risk of breakage of the display module 1 in the embodiments of this application is 3% lower than that in the comparative example. Therefore, the embodiments of this application improve the impact resistance of the display module 1 and enhance the mechanical reliability of the product.

[0077] As shown in Figure 8, in the embodiments of this application, the stresses of the touch layer 60, encapsulation layer 70, and display panel 30 are all lower than those in the comparative example. The risk of breakage of the display module 1 in the embodiments of this application is 11% lower than that in the comparative example. Therefore, the embodiments of this application improve the impact resistance of the display module 1 and enhance the mechanical reliability of the product.

[0078] In the display module 1 of this application, as shown in FIG1B, the bending portion 10 includes a first bending sub-portion 11 and a second bending sub-portion 12 disposed on both sides of the first bending sub-portion 11. The bending portion 10 bends around the central axis of the first bending sub-portion 11. The first hollow hole 411 and the second hollow hole 421 are both disposed in the area corresponding to the first bending sub-portion 11. The support layer 40 has the same thickness in the area corresponding to the second bending sub-portion 12.

[0079] In this embodiment, the display module 1 can have a water-drop shape. In related technologies, a perforated hole is provided in the first bending section 11; the perforated hole is a through-hole that completely penetrates both opposite surfaces of the material. Blind holes are provided in the second bending section 12 to reduce stress on the display module 1 during bending; blind holes are holes that do not completely penetrate both opposite surfaces of the material. The perforated hole is formed by a full etching process, while the blind hole is formed by a partial etching process. Because both full and partial etching processes are required, the number of processes is large, resulting in higher processing costs.

[0080] In the embodiments of this application, the thickness of the support layer 40 ranges from 40 micrometers to 120 micrometers. Compared to the support layer 40 in related technologies, which has a thickness of 120 micrometers to 150 micrometers, the material thickness of the support layer 40 in the embodiments of this application can be reduced, thereby reducing raw material costs. Simultaneously, due to the reduced thickness, the stress on the support layer 40 during bending is reduced, making it easier to bend. Therefore, a perforation hole can be provided only in the first bending portion 11, while no blind holes or perforations are provided in the second bending portion 12. This simplifies the support layer 40 process from two steps (full etching plus half etching) to a single full etching process, thereby reducing the number of processes and lowering processing costs.

[0081] In this embodiment, the thickness of the support layer 40 corresponding to the region of the second bent portion 12 is the same. This means that the second bent portion 12 does not have blind holes or perforations, and the second bent portion 12 has a uniform thickness. It should be understood that the same thickness of the support layer 40 corresponding to the region of the second bent portion 12 refers to the same thickness within the allowable range of process errors; that is, the thickness of the support layer 40 may have slight differences due to the processing precision.

[0082] The second bent portion 12 and the non-bent portion 20 are continuously provided, and the second bent portion 12 and the non-bent portion 20 have the same thickness.

[0083] As shown in Figure 9, this application also provides a display terminal 2, which includes the display module 1 described above.

[0084] In this embodiment, as shown in FIG9, the display terminal 2 includes a display module 1 and a terminal body 3, which are combined into one unit.

[0085] In this embodiment, the display terminal 2 can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0086] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0087] The display module and display terminal provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display module comprising a bent portion and a non-bent portion disposed on at least one side of the bent portion, the display module comprising: Display panel; A support layer is disposed on the side of the display panel away from the light emission direction of the display panel. The support layer includes a first sub-layer and a second sub-layer stacked together. The first sub-layer has a plurality of first hollow holes in the area corresponding to the bending part, and the second sub-layer has a plurality of second hollow holes in the area corresponding to the bending part. The bent portion and the non-bent portion are arranged along a first direction, and the bent portion is bent around the central axis of the bent portion; the first hollow hole and the second hollow hole are both elongated, the long side of the elongated shape of the first hollow hole extends along a second direction, the long side of the elongated shape of the second hollow hole extends along the first direction, and the first direction and the second direction are set at an angle.

2. The display module according to claim 1, wherein, The first perforated hole and the second perforated hole do not overlap at least partially.

3. The display module according to claim 2, wherein, The first direction is perpendicular to the second direction, and any of the first perforations overlaps with at least one of the second perforations.

4. The display module according to claim 1, wherein, The elongated pattern includes a first semi-circular cutout structure, a rectangular cutout structure, and a second semi-circular cutout structure connected sequentially along the long side of the elongated pattern.

5. The display module according to claim 1, wherein, Adjacent first hollow holes are staggered along the first direction, and adjacent second hollow holes are staggered along the second direction.

6. The display module according to claim 1, wherein, The second sub-layer is disposed on the side of the first sub-layer opposite to the light emission direction of the display panel, and the thickness of the second sub-layer is less than or equal to the thickness of the first sub-layer.

7. The display module according to claim 1, wherein, The first sub-layer is disposed on the side of the second sub-layer opposite to the light emission direction of the display panel, and the thickness of the first sub-layer is greater than or equal to the thickness of the second sub-layer.

8. The display module according to claim 1, wherein, The thickness of the first sub-layer is less than or equal to the thickness of the display panel, and the thickness of the second sub-layer is less than or equal to the thickness of the display panel.

9. The display module according to claim 8, wherein, The thickness of the first sublayer ranges from 20 micrometers to 45 micrometers, and the thickness of the second sublayer ranges from 20 micrometers to 45 micrometers.

10. The display module according to claim 1, wherein, The support layer further includes an adhesive layer disposed between the first sub-layer and the second sub-layer, the edge of the adhesive layer not extending beyond the edge of the first sub-layer and the edge of the second sub-layer.

11. The display module according to claim 10, wherein, The thickness of the support layer is less than or equal to twice the thickness of the display panel.

12. The display module according to claim 1, wherein, The bending portion includes a first bending sub-portion and a second bending sub-portion disposed on both sides of the first bending sub-portion. The bending portion bends around the central axis of the first bending sub-portion. The first hollow hole and the second hollow hole are both disposed in the area corresponding to the first bending sub-portion. The thickness of the support layer corresponding to the area of ​​the second bending sub-portion is the same.

13. A display terminal, the display terminal comprising a display module, the display module comprising a bent portion and a non-bent portion disposed on at least one side of the bent portion, the display module comprising: Display panel; A support layer is disposed on the side of the display panel away from the light emission direction of the display panel. The support layer includes a first sub-layer and a second sub-layer stacked together. The first sub-layer has a plurality of first hollow holes in the area corresponding to the bending part, and the second sub-layer has a plurality of second hollow holes in the area corresponding to the bending part. The bent portion and the non-bent portion are arranged along a first direction, and the bent portion is bent around the central axis of the bent portion; the first hollow hole and the second hollow hole are both elongated, the long side of the elongated shape of the first hollow hole extends along a second direction, the long side of the elongated shape of the second hollow hole extends along the first direction, and the first direction and the second direction are set at an angle.

14. The display terminal according to claim 13, wherein, The first perforated hole and the second perforated hole do not overlap at least partially.

15. The display terminal according to claim 14, wherein, The first direction is perpendicular to the second direction, and any of the first perforations overlaps with at least one of the second perforations.

16. The display terminal according to claim 13, wherein, The elongated pattern includes a first semi-circular cutout structure, a rectangular cutout structure, and a second semi-circular cutout structure connected sequentially along the long side of the elongated pattern.

17. The display terminal according to claim 13, wherein, Adjacent first hollow holes are staggered along the first direction, and adjacent second hollow holes are staggered along the second direction.

18. The display terminal according to claim 13, wherein, The second sub-layer is disposed on the side of the first sub-layer opposite to the light emission direction of the display panel, and the thickness of the second sub-layer is less than or equal to the thickness of the first sub-layer.

19. The display terminal according to claim 13, wherein, The first sub-layer is disposed on the side of the second sub-layer opposite to the light emission direction of the display panel, and the thickness of the first sub-layer is greater than or equal to the thickness of the second sub-layer.

20. The display terminal according to claim 13, wherein, The thickness of the first sub-layer is less than or equal to the thickness of the display panel, and the thickness of the second sub-layer is less than or equal to the thickness of the display panel.

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