Display module, manufacturing method thereof, and electronic device

Abstract

The present application provides a display module, a preparation method thereof, and an electronic device. The display module includes: a display panel, a curved cover plate, and a pressure-resistant element. The display panel includes a straight portion and a curved portion surrounding at least part of the straight portion; the curved cover plate is provided on one side of the straight portion and the curved portion; the pressure-resistant element is provided on the side of the display panel away from the curved cover plate, for supporting the display panel; and the pressure-resistant element includes a main pressure-resistant portion, which is provided corresponding to the straight portion, and the material of the main pressure-resistant portion is a rigid material. The display module can avoid the problem of the display panel being damaged due to partial or full force when subjected to external impact or slow external force, effectively avoids the display module from producing undesirable phenomena such as stenciling, bright lines, and black screens, and improves the display performance of the display module.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display module, a preparation method thereof, and an electronic device. Background Art

[0002] The display module includes a cover plate, a flexible display panel and a supporting film; wherein, the cover plate is arranged on the side where the display surface of the flexible display panel is located, and the flexible supporting film is arranged on the side of the flexible display panel away from the cover plate, for supporting the flexible display panel; the flexible display panel is used to display the picture when working.

[0003] However, when the display module is subjected to external impact and slow external force, the flexible display panel is easily damaged, causing the display module to produce undesirable phenomena such as mold printing, bright lines, and black screen. Summary of the Invention

[0004] The display module, preparation method thereof, and electronic device provided in this application are intended to solve the problem of existing display modules, in which the display panel is easily damaged when the display module is subjected to external impact and slow external force, resulting in the display module producing undesirable phenomena such as mold printing, bright lines, and black screen.

[0005] To solve the above technical problems, this application adopts a technical solution: providing a display module. The display module includes: a display panel, a curved cover plate, and a pressure-resistant element. The display panel includes a straight portion and a curved portion surrounding at least a portion of the straight portion; the curved cover plate is disposed on one side of the straight portion and the curved portion; the pressure-resistant element is disposed on the side of the display panel facing away from the curved cover plate to support the display panel; and the pressure-resistant element includes a main pressure-resistant portion, which is disposed corresponding to the straight portion and is made of a rigid material.

[0006] The pressure-resistant element further comprises a curved pressure-resistant portion; the curved pressure-resistant portion is arranged around at least a portion of the main pressure-resistant portion and corresponds to the curved portion; and the curved pressure-resistant portion is made of a rigid material;

[0007] Optionally, the strength value of the rigid material is greater than or equal to 140N / mm 2 , and less than or equal to 280N / mm 2 ;

[0008] Optionally, the rigid material is glass or metal;

[0009] Optionally, the pressure-resistant element is integrally formed;

[0010] Optionally, the thickness of the pressure-resistant element is greater than or equal to 0.1 mm and less than or equal to 0.3 mm.

[0011] The curved cover plate includes a flat cover plate area and a curved cover plate area arranged around at least a portion of the flat cover plate area;

[0012] An end of the curved anti-compression portion facing away from the main anti-compression portion is connected to an end of the curved cover plate area facing away from the straight cover plate area;

[0013] Optionally, a surface of the curved cover plate area facing the display panel has a step portion, and at least a portion of an end of the curved anti-pressure portion facing away from the main anti-pressure portion extends onto the step portion;

[0014] Optionally, the display module further includes a binding portion connected to the display panel; a portion of an end of the curved anti-pressure portion facing away from the main anti-pressure portion is spaced apart from the curved cover plate area, and the binding portion is bent through the gap between the curved anti-pressure portion and the curved cover plate area to a side of the anti-pressure element facing away from the curved cover plate; and the remaining portion of the end of the curved anti-pressure portion facing away from the main anti-pressure portion extends onto the step portion;

[0015] Optionally, along a direction perpendicular to the straight portion, a dimension of the step portion is equal to a thickness of the pressure-resistant element.

[0016] A groove is provided on a surface of the curved cover plate area facing the display panel to form a step portion; at least a portion of an end of the curved anti-pressure portion away from the main anti-pressure portion extends into the groove.

[0017] The groove is filled with sealing material for connecting the curved cover plate and the pressure-resistant element.

[0018] The pressure-resistant element further comprises a curved pressure-resistant portion; the curved pressure-resistant portion is arranged around at least a portion of the main pressure-resistant portion and corresponds to the curved portion; and the hardness of the main pressure-resistant portion is greater than the hardness of the curved pressure-resistant portion;

[0019] Optionally, the material of the curved pressure-resistant portion is an elastic material;

[0020] Optionally, the elastic material is polyimide.

[0021] To solve the above technical problem, another technical solution adopted by the present application is to provide an electronic device comprising the above-mentioned display module.

[0022] To address the above-mentioned technical issues, another technical solution adopted in this application is to provide a method for preparing a display module. The method comprises: providing a module body; the module body comprises a flexible support film, a display panel, and a curved cover plate stacked in sequence; the display panel comprises a straight portion and a curved portion surrounding at least a portion of the straight portion; removing at least a portion of the flexible support film corresponding to the straight portion; and disposing at least a main pressure-resistant portion at the location of the module body where the flexible support film was removed, the main pressure-resistant portion being disposed corresponding to the straight portion and made of a rigid material.

[0023] The step of removing at least the portion of the flexible support film corresponding to the straight portion includes: removing the entire flexible support film;

[0024] The step of setting at least a main pressure-resistant part at the position where the flexible support film is removed from the module body also includes: setting a curved pressure-resistant part at the position where the flexible support film is removed from the module body; the curved pressure-resistant part is set around at least part of the main pressure-resistant part and corresponds to the curved part; and the material of the curved pressure-resistant part is a rigid material; wherein the curved pressure-resistant part and the main pressure-resistant part form a pressure-resistant element.

[0025] Among them, the step of removing at least the part of the flexible support membrane corresponding to the straight part includes: only removing the part of the flexible support membrane corresponding to the straight part, retaining the part of the flexible support membrane corresponding to the curved part to form a curved pressure-resistant part; at least a main pressure-resistant part is set at the position where the flexible support membrane is removed from the module body, specifically including: setting the main pressure-resistant part at the position where the flexible support membrane is removed; wherein the curved pressure-resistant part and the main pressure-resistant part form a pressure-resistant element.

[0026] The beneficial effects of the embodiments of the present application are different from those of the prior art: the display module provided by the embodiments of the present application includes a display panel and a curved cover plate, wherein the display panel includes a straight portion and a curved portion surrounding at least a portion of the straight portion; the curved cover plate is provided on one side of the straight portion and the curved portion to display an image through the display panel during operation, and the curved cover plate protects the display panel. At the same time, a pressure-resistant element is provided on the side of the display panel facing away from the curved cover plate to support the display panel through the pressure-resistant element. In addition, the pressure-resistant element includes a main pressure-resistant portion provided corresponding to the straight portion of the display panel, and the straight portion is made of a rigid material. In this way, when the display module is subjected to external impact or slow external force, not only can the curved cover plate resist the external force, but the main pressure-resistant portion of the rigid material can also disperse the external force, reducing the external force transmitted to at least the straight portion of the display panel, that is, avoiding the problem of partial or complete damage to the display panel caused by force on at least the straight portion of the display panel, effectively avoiding the occurrence of undesirable phenomena such as mold imprint, bright lines, and black screen on the display module, and improving the display performance of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a display module provided in one embodiment of the present application;

[0028] Figure 2 for Figure 1 Disassembly diagram of the

[0029] Figure 3 A schematic structural diagram of a display module provided in another embodiment of the present application;

[0030] Figure 4 Schematic diagram of a specific structure of the cover plate;

[0031] Figure 5 A schematic structural diagram of a display module provided in yet another embodiment of the present application;

[0032] Figure 6 A schematic structural diagram of a display module provided in yet another embodiment of the present application;

[0033] Figure 7 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application;

[0034] Figure 8 A flowchart of a method for preparing a display module according to an embodiment of the present application;

[0035] Figures 9-11 , which is a structural diagram of the method for preparing a display module provided in an embodiment of the present application.

[0036] Description of Reference Numerals

[0037] 10-display module; A-main display area; B-curved display area; 1-display panel; 11-straight part; 12-curved part; 2-curved cover plate; 21-straight cover plate area; 22-curved cover plate area; 23-step part; 24-groove; 3-pressure-resistant element; 31-main pressure-resistant part; 32-curved pressure-resistant part; 4-composite tape; binding part 5; flexible support film 6. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] The terms "first," "second," and "third" in this application are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications also change accordingly. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products, or devices.

[0040] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0042] See also Figure 1 , Figure 1 A schematic structural diagram of a display module 10 provided in one embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of disassembly; In this embodiment, a display module 10 is provided. The display module 10 has a main display area A and a curved display area B (which may be an arc-shaped area) at least partially surrounding the main display area A. The display module 10 is used to display images during operation. Currently, due to the flexible support film 6 (see below) during the preparation process of the display module 10, Figure 8 ) and the display panel 1 need to be bent to the arc area of ​​the curved cover plate 2 to fit with the curved cover plate 2; therefore, the flexible support film 6 is generally made of flexible material; however, since the flexible support film 6 is made of flexible material, it is more likely to deform under the action of external force, causing damage to the display panel 1 and affecting the display performance of the display panel 1.

[0043] To this end, the applicant has found that after the curved cover plate 2 is attached to the side where the display surface of the display panel 1 is located, the curved cover plate 2 plays a role in reverse protection and support of the display panel 1, and the role of the flexible support film 6 is reduced; in order to improve the compressive performance of the display module 10, that is, the strength performance, after attaching the curved cover plate 2, the flexible support film 6 can be removed, leaving the already attached curved cover plate 2 + polarizer (not shown) + display panel 1, and then attaching a rigid material component, such as 3D cover glass, to the side of the display panel 1 away from the curved cover plate 2 to replace the original flexible support film 6, so that the display module 10 has extremely high strength performance, and when subjected to force, the pressure is dispersed by the rigid material component, effectively reducing or avoiding the problem of the display panel 1 being damaged by force. Of course, it is also possible to only remove the portion of the flexible support film 6 corresponding to the main display area A, retain the portion corresponding to the curved display area B, and then attach the rigid material component at the position corresponding to the main display area A to provide a combination of rigid and flexible support, thereby improving the strength of the display module 10 and dispersing external forces.

[0044] Specific, combined Figure 1 and Figure 2The display module 10 includes a display panel 1 , a curved cover plate 2 and a pressure-resistant component 3 .

[0045] Among them, see Figure 2 , the curved cover plate 2 can be a curved rigid cover plate, the curved cover plate 2 includes a transparent substrate, and the curved cover plate 2 has a flat cover plate area 21 and a curved cover plate area 22 connected to the flat cover plate area 21. The curved cover plate area 22 can be arc-shaped. The flat cover plate area 21 corresponds to the straight portion and is arranged in the main display area A. The curved cover plate area 22 corresponds to the curved portion and is arranged in the curved display area B. The curved cover plate area 22 can surround at least part of the flat cover plate area 21; specifically, the curved cover plate area 22 can be arranged around the circumferential edge of the flat cover plate area 21. For example, the curved cover plate area 22 can be arranged around the circumferential edge of the flat cover plate area 21, and cooperate with the flat cover plate area 21 to form a concave structure. Wherein, the transparent substrate is formed of materials such as glass, polymethyl methacrylate (PMMA), and polycarbonate (PC).

[0046] Specifically, the flat cover plate area 21 of the curved cover plate 2 can be a plane, and can be rectangular, circular, or square. The curved cover plate area 22 of the cover plate 2 can be a closed loop. The thickness of the cover plate 2 can be greater than or equal to 0.5 mm and less than or equal to 0.8 mm.

[0047] like Figure 1 As shown, the display panel 1 has a display surface and a back surface facing each other. The curved cover plate 2 is specifically provided on the side where the display surface of the display panel 1 is located. The display panel 1 is used to display images when working. Figure 2 As shown, the display panel 1 specifically includes a straight portion 11 and a curved portion 12 surrounding at least a portion of the straight portion 11. The straight portion 11 can be located in the main display area A, and the curved portion 12 can be located in the curved display area B. The curved portion 12 can be arc-shaped. Both the straight portion 11 and the curved portion 12 of the display panel 1 can display images during operation, thereby achieving 3D display in the display module 10.

[0048] Specifically, such as Figure 1 As shown, the curved portion 12 is bent in a direction away from the curved cover plate 2 , and the curved portion 12 is connected to the edge of the straight portion 11 and surrounds at least a portion of the straight portion 11 ; specifically, the curved portion 12 can be arranged around the circumference of the straight portion 11 .

[0049] Among them, the display panel 1 may be a flexible display panel. The display panel 1 includes a substrate, a driving circuit layer arranged on the substrate, and a light-emitting functional layer and an encapsulation layer electrically connected to the driving circuit layer. The light-emitting functional layer may include an anode, a light-emitting layer, a cathode, a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer. The encapsulation layer includes at least one inorganic layer and at least one organic layer alternately stacked. The inorganic layer may be selected from inorganic materials such as aluminum oxide, silicon oxide, silicon nitride, silicon oxynitride, silicon carbide, titanium oxide, zirconium oxide, and zinc oxide. The organic layer is selected from organic materials such as epoxy resin, polyimide (PI), polyethylene terephthalate (PET), polycarbonate (PC), polyethylene (PE), and polyacrylate. For example, the encapsulation layer is a laminated structure of aluminum oxide film, polypropylene film, and silicon nitride film stacked in sequence.

[0050] like Figure 1 As shown, the pressure-resistant element 3 is arranged on the side of the display panel 1 away from the curved cover plate 2, and is used to support the display panel 1 to ensure the flatness of the display panel 1. The contour of the surface of the pressure-resistant element 3 facing the curved cover plate 2 is consistent with the contour of the surface of the curved cover plate 2 facing the pressure-resistant element 3. Figure 2 The pressure-resistant element 3 specifically includes a main pressure-resistant portion 31 and a curved pressure-resistant portion 32 ; the curved pressure-resistant portion 32 is arranged around at least a portion of the main pressure-resistant portion 31 ; specifically, the curved pressure-resistant portion 32 can be arranged in a circle around the circumferential edge of the main pressure-resistant portion 31 .

[0051] Among them, the main pressure-resistant part 31 is located in the main display area A and is set corresponding to the flat part 11 to support the flat part 11, and the material of the main pressure-resistant part 31 is a rigid material; in this way, when the display module 10 is subjected to external impact and slow external force, it can not only resist the external force through the curved cover plate 2, but also disperse the external force through the main pressure-resistant part 31, so as to minimize or avoid the external force from being transmitted to the flat part 11 of the display panel 1 as much as possible, that is, to avoid the problem that the flexible flat part 11 of the flexible display panel 1 is subjected to force and the display panel 1 is partially damaged, effectively reducing the probability of the display module 10 producing undesirable phenomena such as mold printing, bright lines, and black screens, and improving the display performance of the display module 10. Among them, the strength value of the rigid material of the pressure-resistant element 3 of the present application can be greater than or equal to 140N / mm 2 , to ensure the supporting performance and impact resistance and extrusion resistance of the pressure-resistant element 3.

[0052] Specifically, the orthographic projection of the main pressure-resistant portion 31 on the curved cover plate 2 completely overlaps with the orthographic projection of the straight portion 11 on the cover plate 2, that is, the two are the same size. The rigid material can be glass or metal; the metal can be stainless steel or alloy.

[0053] The curved anti-pressure portion 32 may be located in the curved display area B. The curved anti-pressure portion 32 is provided corresponding to the curved portion 12 of the display panel 1 to support the curved portion 12. The curved anti-pressure portion 32 may be arc-shaped. Figure 2 As shown, in some embodiments, the material of the curved anti-pressure portion 32 is also a rigid material; in this way, when the display module 10 is subjected to external impact and slow external force, the stress can be further dispersed through the curved anti-pressure portion 32 to minimize or avoid the external force being transmitted to the curved portion 12 of the display panel 1, that is, to avoid the problem of the display panel 1 being partially damaged due to the curved portion 12 being subjected to force, further reducing the probability of the display module 10 producing undesirable phenomena such as mold printing, bright lines, and black screens, thereby improving the display performance of the display module 10. The strength value of the rigid material of the anti-pressure element 3 can be less than or equal to 280N / mm 2 , to ensure the bending reliability of the bending pressure-resistant portion 32.

[0054] Among them, the curved anti-pressure part 32 and the main anti-pressure part 31 can be formed as one piece; the thickness of the curved anti-pressure part 32 and / or the main anti-pressure part 31 can be greater than or equal to 0.1 mm and less than or equal to 0.3 mm, so as to improve the supporting strength of the anti-pressure element 3 while ensuring the lightness and thinness of the display module 10 as much as possible.

[0055] Specifically, the end of the curved anti-pressure portion 32 away from the main anti-pressure portion 31 is connected to the end of the curved cover plate area 22 away from the straight cover plate area 21, so that the anti-pressure element 3 and the curved cover plate 2 cooperate to form a protective box structure, further improving the impact resistance and extrusion resistance. In a specific embodiment, see Figure 3 , Figure 3 A schematic structural diagram of a display module provided for another embodiment of the present application; a surface of the curved cover plate area 22 on one side facing the display panel 1 has a step portion 23, and at least a portion of the end of the curved anti-pressure portion 32 away from the main anti-pressure portion 31 extends toward the curved cover plate area 22 and extends onto the step portion 23, so as to support the anti-pressure element 3 through the step portion 23. In particular, since the supporting strength of the curved cover plate 2 is relatively large, when the side of the anti-pressure element 3 away from the curved cover plate 2 is impacted by an external force or buffers an external force, most of the external force exerted on the anti-pressure element 3 will be transmitted to the curved cover plate 2 through the overlapping portion of the curved anti-pressure portion 32 and the curved cover plate area 22, so as to disperse the pressure through the curved cover plate 2, and will not be transmitted to the display panel 1 or only a very small force will be transmitted to the display panel 1, effectively avoiding the problem of the display panel 1 being damaged due to the force transmission, thereby greatly improving the display performance of the display module 10.

[0056] For details, see Figure 4 , Figure 4This is a schematic diagram of a specific cover plate structure; a groove 24 is provided on the side of the curved cover plate region 22 facing the display panel 1. The groove 24 extends circumferentially along the curved cover plate region 22, and the sidewalls and bottom wall of the groove 24 form the aforementioned step 23. In this embodiment, at least a portion of the end of the curved pressure-resistant portion 32 facing away from the main pressure-resistant portion 31 extends into the groove 24. This allows the curved cover plate 2 to support the pressure-resistant element 3, preventing the force exerted on the pressure-resistant element 3 from being transmitted to the display panel 1.

[0057] Optional, such as Figure 3 As shown, the groove 24 may penetrate the surface of the curved cover plate area 22 away from the flat cover plate area 21. Figure 4 As shown, the groove 24 does not penetrate the surface of the curved cover plate area 22 away from the flat cover plate area 21. Optionally, the groove 24 does not penetrate the surface of the curved cover plate area 22 away from the display panel.

[0058] For details, see Figure 5 , Figure 5 A schematic structural diagram of a display module provided by another embodiment of the present application; a portion of the curved anti-pressure portion 32 facing away from one end of the main anti-pressure portion 31 (located on the first side of the main anti-pressure portion 31, such as Figure 5 The remaining portion of the curved anti-pressure portion 32 away from one end of the main anti-pressure portion 31 (located on the second side of the main anti-pressure portion 31, such as Figure 5 The right side of the display module 10 extends onto the stepped portion 23. Specifically, the display module 10 also includes a binding portion 5 connected to the display panel 1, which is used to electrically connect to the circuit board. The binding portion 5 can be bent through the gap between the curved pressure-resistant portion 32 and the curved cover plate area 22 to the side of the pressure-resistant element 3 facing away from the curved cover plate 2.

[0059] The arc length of the portion where the curved anti-compression portion 32 is spaced from the curved cover plate area 22 may be the same as or slightly larger than the width of the binding portion 5 . The arc length refers to the length dimension along the circumferential direction of the curved anti-compression portion 32 .

[0060] Optionally, along the direction perpendicular to the straight portion 11, the size of the step portion 23 is equal to the thickness of the pressure-resistant element 3, ensuring that the pressure-resistant element 3 and the curved cover plate 2 have sufficient contact area and connection strength, reducing the depth of the groove (the height of the step portion 23 along the direction perpendicular to the straight portion 11), and reducing the difficulty of the process. Optionally, along the direction perpendicular to the straight portion 11, the size of the groove 24 is equal to the thickness of the pressure-resistant element 3. Figure 4 As shown, the dimension of the groove 24 in a direction perpendicular to the straight portion 11 is equivalent to the width of the groove 24 , which is equal to the distance between the two side walls of the groove 24 .

[0061] A curved pressure-resistant portion 32 is provided on one or more sides of the pressure-resistant element 3, extending to the edge of the curved cover plate 2, for example, on three sides. The pressure-resistant element 3 extends to the edge of the curved cover plate 2 only at the upper and left edges, while the lower edge is suspended. This allows the curved portion 12 of the display panel 1, which is connected to the binding portion 5, to extend normally. This means that the curved cover plate 2 and the pressure-resistant element 3, connected at the upper and left edges, provide a combined support. External forces act only on the curved cover plate 2 and the pressure-resistant element 3 and cannot affect the display.

[0062] Of course, in other embodiments, the end of the bent pressure-resistant portion 32 away from the main pressure-resistant portion 31 can also extend into the groove 24; and a through hole is opened at the position of the pressure-resistant element 3 corresponding to the binding portion 5, and the binding portion 5 passes through the through hole and bends to the side of the pressure-resistant element 3 away from the display panel 1.

[0063] Those skilled in the art can understand that when the curved pressure-resistant part 32 extends away from one end of the main pressure-resistant part 31 to the step part 23, the pressure-resistant element 3 and the curved cover plate 2 cooperate to form a protective box structure, and the display panel 1 is located in the protective box to protect the display panel 1; and the use of the pressure-resistant element 3 made of rigid material allows the display module to achieve the performance of a hard screen.

[0064] In a specific embodiment, the groove 24 may be filled with a sealing material (not shown) to connect the curved cover plate 2 and the pressure-resistant element 3 to seal the groove 24, thereby sealing the protective box defined by the cover plate 2 and the pressure-resistant element 3 to prevent external moisture, acidic media, etc. from entering the protective box and corroding the display panel 1. The sealing material may be glass glue.

[0065] In another embodiment, see Figure 6 , Figure 6 A schematic structural diagram of a display module provided for another embodiment of the present application; different from the above embodiment, the hardness of the main pressure-resistant part 31 is greater than the hardness of the curved pressure-resistant part 32; specifically, the material of the curved pressure-resistant part 32 can be an elastic material; the elastic material is polyimide. Compared with the above-mentioned solution in which the curved pressure-resistant part 32 is a rigid material, during the manufacturing process of the pressure-resistant element 3, after bonding the curved cover plate 2, only a flat rigid main pressure-resistant part 31 needs to be manufactured, and there is no need to redesign the shape of the arc area material, which is easy to mass produce. It can be understood that the curved pressure-resistant part 32 corresponding to this embodiment is part of the flexible support film 6 of the display module 10 during the preparation process. The pressure-resistant element 3 is a supporting element that combines rigidity and flexibility, which serves to increase the strength of the display module 10 and protect the display panel 1, and the process is easy to implement.

[0066] Of course, the display module 10 also includes a polarizer (not shown) located between the display panel 1 and the curved cover plate 2, an adhesive layer (not shown) bonding the polarizer and the curved cover plate 2, and a composite tape 4 located on the side of the pressure-resistant element 3 facing away from the display panel 1. The details of these structures can be found in the relevant structures of existing display modules and will not be described in detail here. The composite tape 4 may include a grid of adhesive, a cushioning foam, and a copper foil, etc., which are stacked in a direction away from the display panel 1.

[0067] The display module 10 provided in this embodiment improves the strength of the entire module without changing the original module stack, thereby reducing the product defect rate caused by drop ball tests or squeeze tests. Specifically, the display module 10 is provided with a display panel 1 and a curved cover plate 2 disposed on the side of the display panel 1 where the display surface is located. The display panel 1 displays images during operation, and the curved cover plate 2 protects the display panel 1. At the same time, a pressure-resistant element 3 is disposed on the side of the display panel 1 facing away from the curved cover plate 2 to support the display panel 1. Furthermore, by making the pressure-resistant element 3 include a main pressure-resistant portion 31 corresponding to the straight portion 11 of the display panel 1, and making the main pressure-resistant portion 31 made of a rigid material, when the display module 10 is subjected to external impact and slow external force, not only can the curved cover plate 2 resist the external force, but the rigid main pressure-resistant portion 31 can also disperse the external force, reducing the external force transmitted to the straight portion 11 of the display panel 1. This prevents the flexible display panel 1 from being damaged by force, effectively improving the display module 10 from producing undesirable phenomena such as stenciling, bright lines, and a black screen, and enhancing the display performance of the display module 10. Furthermore, by making the curved pressure-resistant portion 32 also made of a rigid material, the curved portion 12 of the display panel 1 from being damaged by force is prevented. In addition, by overlapping one end of the curved pressure-resistant portion 32 away from the main pressure-resistant portion 31 onto the stepped portion 23 of the curved cover plate 2, when the pressure-resistant element 3 is subjected to force, the curved cover plate 2 further disperses the stress, further preventing the display panel 1 from being damaged by the force; and when the display module 10 is impacted or squeezed by external forces, the curved cover plate 2 and the pressure-resistant element 3 cooperate with each other to act as a protective box, effectively protecting the display panel 1. At the same time, the use of the pressure-resistant element 3 made of a rigid material allows the display panel 1 to achieve the performance of a hard screen. Alternatively, only the main pressure-resistant portion 31 of the pressure-resistant element 3 corresponding to the straight portion 11 is made of a rigid material, while the curved pressure-resistant portion 32 is made of a flexible material. The preparation process of the display module 10 is relatively simple and convenient for mass production.

[0068] See also Figure 7 , Figure 7This is a schematic diagram of the structure of an electronic device provided in one embodiment of the present application. In one embodiment, an electronic device is provided that can implement 3D display, i.e., curved display; the device may be a watch, a smartphone, a tablet computer, or the like. The electronic device specifically includes the display module 10 described in any of the aforementioned embodiments. The specific structure and functions of the display module 10 can be found in the specific structure and functions of the display module 10 provided in the aforementioned embodiments, and the same or similar technical effects can be achieved, so further description is omitted here.

[0069] See also Figures 8 to 11 , Figure 8 A flowchart of a method for preparing a display module according to an embodiment of the present application; Figures 9-11 , is a structural diagram of a method for preparing a display module provided in an embodiment of the present application; in this embodiment, a method for preparing a display module is provided, which can be used to prepare the display module 10 provided in any of the above embodiments, and the method specifically includes:

[0070] Step S1: providing a module body; the module body comprises a flexible support film, a display panel and a cover plate stacked in sequence; the display panel comprises a straight portion and a curved portion surrounding at least a portion of the straight portion.

[0071] The specific structure of the module body can be found in Figure 9 The flexible support film 6 at least covers the straight portion 11. For example, the flexible support film 6 has a main support portion covering the straight portion 11 and a curved support portion covering the curved portion 12. The flexible support film 6 has a main support portion located in the main display area A and a curved support portion located in the curved display area B. The material of the flexible support film 6 is a flexible material, such as polyimide (PI). The curved cover plate 2 includes a straight cover plate area 21 and a curved cover plate area 22 connected to the straight cover plate area 21. Figure 4 As shown, a groove 24 may be formed on the inner side of the curved cover plate area 22 , and the groove 24 extends along the circumferential direction of the curved cover plate area 22 .

[0072] In the specific implementation process, step S1 specifically includes laminating a display panel 1, a polarizer, and an adhesive layer on one side of a flexible support film 6; then bonding the curved cover plate 2 to the side of the adhesive layer facing away from the polarizer. The flat cover plate region 21, the straight portion 11, and the main support portion are correspondingly arranged, while the curved cover plate region 22, the curved portion 12, and the curved support portion are correspondingly arranged.

[0073] Step S2: removing at least the portion of the flexible supporting film corresponding to the straight portion.

[0074] Specifically, laser can be used to peel off at least the portion of the flexible support film 6 corresponding to the straight portion 11. Of course, ultraviolet light (UV) irradiation can also be used to remove the flexible support film 6.

[0075] Step S3: at least a main pressure-resistant portion is provided at the position of the module body where the flexible support film is removed. The main pressure-resistant portion is provided corresponding to the straight portion and is made of a rigid material.

[0076] This preparation method peels off the flexible support film 6 after the curved cover plate 2 is attached to the display panel 1. The flexible support film 6 can be used to support and protect the display panel 1 before the curved cover plate 2 is attached. Specifically, the flexible support film 6 is peeled off by laser, which is easy to implement. In addition, after attaching the curved cover plate 2, at least the portion of the flexible support film 6 corresponding to the straight portion 11 is removed, and the main pressure-resistant portion is replaced with a straight portion 11 of a rigid material. When the display module 10 is subjected to external impact and slow external force, it can not only resist the external force through the curved cover plate 2, but also use the pressure-resistant element 3 to disperse the pressure, thereby preventing the external force from being transmitted to the straight portion 11 of the display panel 1, that is, avoiding the problem of the straight portion 11 of the display panel 1 being damaged due to the force on the display panel 1. This effectively improves the display module 10 from producing undesirable phenomena such as mold printing, bright lines, and black screens, thereby improving the display performance of the display module 10.

[0077] In one embodiment, the method for preparing the display module 10 specifically includes:

[0078] Step S11: providing a module body; the module body comprises a flexible support film 6, a display panel 1 and a cover plate 2 stacked in sequence; the display panel 1 comprises a straight portion 11 and a curved portion 12 arranged around at least a portion of the circumferential edge of the straight portion 11.

[0079] Please refer to the relevant description above for details.

[0080] Step S12: removing the entire flexible supporting film 6 .

[0081] Specifically, the flexible support film 6 can be removed by laser stripping. The product structure after step S12 can be found in Figure 10 .

[0082] Step S13: a main pressure-resistant portion 31 and a curved pressure-resistant portion 32 are provided at the position of the module body where the flexible support film 6 is removed.

[0083] like Figure 1 or Figure 3 As shown, a main pressure-resistant portion 31 is provided corresponding to the straight portion 11 and is made of a rigid material. A curved pressure-resistant portion 32 is provided around at least a portion of the main pressure-resistant portion 31. Specifically, the curved pressure-resistant portion 32 is provided around the circumferential edge of the main pressure-resistant portion 31 and corresponds to the curved portion 12. The curved pressure-resistant portion 32 is also made of a rigid material. The main pressure-resistant portion 31 and the curved pressure-resistant portion 32 form a pressure-resistant element 3 to protect the display panel 1.

[0084] This method further replaces the entire flexible support film 6 with a pressure-resistant element 3 made of a rigid material, so that the flexible support film 6 can be used to support the display panel 1 before the curved cover plate 2 is attached, and the flexible support film 6 is replaced with the pressure-resistant element 3 made of a rigid material after the curved cover plate 2 is attached. In this way, when the prepared display module 10 is subjected to external impact and slow external force, it can not only resist the external force through the curved cover plate 2, but also use the pressure-resistant element 3 to disperse the pressure, thereby avoiding the external force from being transmitted to the straight part 11 and the curved part 12 of the display panel 1, and avoiding the problem of the display panel 1 being damaged due to the force applied to the display panel 1, effectively avoiding the display module 10 from producing undesirable phenomena such as stenciling, bright lines, and black screens, and improving the display performance of the display module 10.

[0085] In another embodiment, the method for preparing the display module 10 specifically includes:

[0086] Step S21 : providing a module body; the module body comprises a flexible support film 6 , a display panel 1 and a curved cover plate 2 stacked in sequence; the display panel 1 comprises a straight portion 11 and a curved portion 12 arranged around at least a portion of the straight portion 11 .

[0087] Please refer to the relevant description above for details.

[0088] Step S22 : removing only the portion of the flexible supporting film 6 corresponding to the straight portion 11 and retaining the portion of the flexible supporting film 6 corresponding to the curved portion 12 to form a curved pressure-resistant portion 32 .

[0089] Specifically, a laser stripping method can also be used to remove part of the flexible support film 6. The product structure after the step S22 is processed can be specifically referred to. Figure 11 It can be understood that the arc-shaped support portion serves as the final curved pressure-resistant portion 32 .

[0090] Step S23: providing a main pressure-resistant portion 31 at the position where the flexible supporting film 6 is removed.

[0091] The main pressure-resistant part 31 is made of rigid material. The product structure after step S23 can be found in Figure 6 .

[0092] Compared with the preparation method provided in the above embodiment, this preparation method only removes the portion of the flexible support film 6 corresponding to the flat portion 11 and replaces it with a main pressure-resistant portion 31 of a rigid material; not only can the display module 10 resist external force and slow external force through the curved cover plate 2, but also can use the main pressure-resistant portion 31 to disperse the pressure, preventing the external force from being transmitted to the flat portion 11 of the display panel 1, thereby avoiding the problem of the flat portion 11 of the display panel 1 being subjected to force and causing local damage to the display panel 1, effectively avoiding the display module 10 from producing undesirable phenomena such as mold printing, bright lines, and black screens, and improving the display performance of the display module 10; and there is no need to redesign the shape of the curved area material of the curved pressure-resistant portion 32, which is easy to mass produce; and the strength of the entire display module 10 can be improved without changing the original module stacking, reducing the product defect rate caused by the drop ball test or extrusion test. At the same time, a pressure-resistant element 3 that combines rigidity and flexibility can be obtained, which not only increases the module strength and protects the display panel 1, but also is easy to implement in the process.

[0093] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display module, characterized in that: include: The display panel comprises a straight portion and a curved portion surrounding at least a portion of the straight portion; a curved cover plate, covering one side of the straight portion and the curved portion; A pressure-resistant element is arranged on the side of the display panel away from the curved cover plate, and is used to support the display panel; and the pressure-resistant element includes a main pressure-resistant part and a curved pressure-resistant part, the main pressure-resistant part is arranged corresponding to the straight part, and the material of the main pressure-resistant part is a rigid material; the curved pressure-resistant part is arranged around at least part of the main pressure-resistant part and corresponds to the curved part; the curved cover plate includes a flat cover plate area and a curved cover plate area arranged around at least part of the flat cover plate area; the curved cover plate area has a step portion on one side surface facing the display panel, and at least part of one end of the curved pressure-resistant part away from the main pressure-resistant part extends to the step portion.

2. The display module according to claim 1, wherein: The material of the curved pressure-resistant portion is a rigid material.

3. The display module according to claim 1, wherein: The strength value of the rigid material is greater than or equal to 140N / mm 2 , and less than or equal to 280N / mm 2 .

4. The display module according to claim 1, wherein: The rigid material is glass or metal.

5. The display module according to claim 1, wherein: The pressure-resistant element is integrally formed.

6. The display module according to claim 1, wherein: The thickness of the pressure-resistant element is greater than or equal to 0.1 mm and less than or equal to 0.3 mm.

7. The display module according to claim 1, wherein: The display module also includes a binding portion connected to the display panel; the portion of the bent anti-pressure portion at one end away from the main anti-pressure portion is spaced apart from the bent cover plate area, and the binding portion is bent to the side of the anti-pressure element away from the curved cover plate through the gap between the bent anti-pressure portion and the curved cover plate area; the remaining portion of the bent anti-pressure portion at one end away from the main anti-pressure portion extends to the step portion.

8. The display module according to claim 7, wherein: Along a direction perpendicular to the straight portion, a dimension of the stepped portion is equal to a thickness of the pressure-resistant element.

9. The display module according to claim 1, wherein: A groove is provided on a surface of the curved cover plate area facing the display panel to form the step portion; at least a portion of an end of the curved anti-pressure portion away from the main anti-pressure portion extends into the groove.

10. The display module according to claim 9, wherein: The groove is filled with sealing material for connecting the curved cover plate and the pressure-resistant element.

11. The display module according to claim 1, wherein: The hardness of the main anti-compression portion is greater than the hardness of the curved anti-compression portion.

12. The display module according to claim 11, wherein: The material of the curved pressure-resistant portion is elastic material.

13. The display module according to claim 12, wherein: The elastic material is polyimide.

14. An electronic device, characterized in that: Comprising the display module according to any one of claims 1-13.

15. A method for preparing a display module, characterized in that: include: Providing a module body; the module body includes a flexible support film, a display panel and a curved cover plate stacked in sequence; The display panel includes a straight portion and a curved portion surrounding at least a portion of the straight portion; removing at least a portion of the flexible supporting film corresponding to the straight portion; At least a main pressure-resistant portion is provided at a position of the module body where the flexible support film is removed. The main pressure-resistant portion is provided corresponding to the straight portion and is made of a rigid material.

16. The method for preparing a display module according to claim 15, wherein: The step of removing at least a portion of the flexible supporting film corresponding to the straight portion comprises: removing the entire flexible support film; The step of providing at least a main pressure-resistant portion at a position of the module body where the flexible support film is removed further comprises: A curved anti-pressure portion is provided at a position where the flexible support film is removed from the module body; the curved anti-pressure portion is provided around at least a portion of the main anti-pressure portion and corresponds to the curved portion; and the curved anti-pressure portion is made of a rigid material; wherein the curved anti-pressure portion and the main anti-pressure portion form a pressure-resistant element.

17. The method for preparing a display module according to claim 15, wherein: The step of removing at least a portion of the flexible supporting film corresponding to the straight portion comprises: Only the portion of the flexible supporting film corresponding to the straight portion is removed, and the portion of the flexible supporting film corresponding to the curved portion is retained to form a curved pressure-resistant portion; The main pressure-resistant portion is provided at least at a position where the flexible support film is removed from the module body, specifically comprising: The main anti-compression portion is provided at a position where the flexible supporting film is removed; wherein the curved anti-compression portion and the main anti-compression portion form a anti-compression element.

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