Display screen and electronic device

Abstract

The present application provides a display screen and an electronic device. The display screen comprises: a display module which comprises a cambered-surface section and a plane section; and a supporting plate which comprises a first supporting section, a second supporting section, and a third supporting section. The second supporting section is located between the first supporting section and the third supporting section; the first supporting section fits with the plane section; the second supporting section, the third supporting section, and a connecting gap therebetween form a bent section; the bent section fits with the cambered-surface section; a recessed area is formed on the surface of the second supporting section, such that the hardness of the second supporting section is smaller than that of the first supporting section; and the hardness of the third supporting section is smaller than that of the first supporting section or the second supporting section. The recessed area is formed in the second supporting section, such that the hardness of the second supporting section is smaller than that of the first supporting section, thereby facilitating bending of the second supporting section; and the hardness of the third supporting section is smaller than that of the first supporting section or the second supporting section, thereby facilitating bending of the third supporting section, facilitating fitting of the bent section and the cambered-surface section, and mitigating the problem that the supporting plate and the display module are prone to falling off.

Description

Displays and electronic devices

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 12, 2023, with application number 2023111755536 and invention name “Display Screen and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of electronic devices, and in particular to a display screen and an electronic device. Background Art

[0003] With the development of flexible screens, electronic devices with curved screens with curved side edges have become possible. Among them, a display screen with curved sides on both sides is called a double-curved screen, and a display screen with curved sides on all four sides is called a quad-curved screen.

[0004] The curved display screen includes a display module and a support module that increases the hardness of the display module. The support module is attached to the non-light-emitting side of the display module. In order to improve the extrusion resistance of the display module and ensure the fitting stability between the support module and the display module, the hardness and extrusion resistance of the current support module still have room for improvement.

[0005] Therefore, how to improve the stability of the bonding between the support module and the display module is a technical problem that needs to be solved urgently by those skilled in the art.

[0006] Summary of the Invention

[0007] The present application provides a display screen that ensures the stability of the bonding between the support module and the display module. In addition, the present application also provides an electronic device having the above-mentioned display screen.

[0008] To achieve the above objectives, this application provides the following technical solutions:

[0009] In the first aspect, the present application provides a display screen, comprising: a cover plate, a display module and a support plate, wherein the light-emitting side of the display module is connected to the cover plate, and the support plate is connected to the non-light-emitting side of the display module; the display module includes a curved surface segment and a flat surface segment; the support plate includes a first support segment, a second support segment and a third support segment, the second support segment is located between the first support segment and the third support segment, the first support segment is bonded to the flat surface segment, the second support segment, the third support segment and the connecting gap between the second support segment and the third support segment form a bent segment, and the bent segment is bonded to the curved surface segment; and the surface of the second support segment has a recessed area, the hardness of the second support segment is less than that of the first support segment, and the hardness of the third support segment is less than that of the first support segment.

[0010] It can be seen from the above content that: the first supporting section of the support plate is fitted with the planar section of the display module to support the planar section of the display module; the bending section of the support plate includes a second supporting section and a third supporting section to support the curved section of the display module; the second supporting section is provided with a recessed area, so that the hardness of the second supporting section is less than that of the first supporting section, which is conducive to the bending of the second supporting section; the hardness of the third supporting section is less than that of the first supporting section or the second supporting section, which is conducive to the bending of the third supporting section, thereby facilitating the fitting of the bending section with the curved section, and improving the problem of easy detachment of the support plate and the display module.

[0011] In a possible implementation, the material of the first supporting segment is the same as the material of the second supporting segment, and the hardness of the third supporting segment is smaller than the hardness of the second supporting segment.

[0012] From the above content, it can be seen that the hardness of the support plate changes gradually, ensuring the supporting strength of the display module while ensuring the stability of the fit between the bent section and the curved section.

[0013] In a possible implementation, the width of the bending section is L1, the width of the second supporting section is L2, and the relationship between the width L2 of the second supporting section and the width L1 of the bending section satisfies: L2 / L1=1 / 7-1 / 5.

[0014] In a possible embodiment, the first support segment and the second support segment are an integral piece, and the second support segment is a structure formed by providing a recessed area on the surface of the first support segment.

[0015] It can be seen from the above content that the first supporting section and the second supporting section are an integrated structure, which can ensure the connection strength between the two and avoid breakage during bending.

[0016] In a possible embodiment, a side edge of the third supporting segment is connected to an edge edge of the first supporting segment, and the first supporting segment and the third supporting segment are crimped and fixed by a calendering process.

[0017] In a possible embodiment, the side edge of the third supporting segment is connected to the side edge of the first supporting segment through a concave-convex structure.

[0018] From the above content, it can be seen that the concave-convex structure is used to match the connection, which can limit the connection between the third support segment and the first support segment, and then press-fit and fix them by calendering to achieve the connection between the first support segment and the third support segment.

[0019] In a possible embodiment, the concave-convex structure includes: a dovetail-shaped protrusion and a dovetail groove that are matched together, or an L-shaped groove and a protrusion that are matched together.

[0020] From the above content, it can be seen that the first supporting section and the third supporting section are connected by using the mortise and tenon technology to ensure the stability of the connection.

[0021] In a possible implementation, the recessed area is an indentation, and the indentation is located on a side of the support plate close to the display module.

[0022] From the above, it can be seen that the indentation method is easy to process, and the indentation is located on the side of the support plate close to the display module, which can prevent the indentation on the second support segment from protruding in the other direction and affecting the assembly of the support plate and the display module.

[0023] In a possible implementation, the recessed area is a groove, and the groove is located on a side of the support plate away from the display module.

[0024] From the above content, it can be seen that the area of ​​the support plate and the display module must be ensured to fit together.

[0025] In a possible embodiment, the groove is a groove processed by laser, and the sidewalls of the groove are inclined walls. The groove is a groove that gradually expands from the groove bottom to the groove mouth.

[0026] It can be seen from the above content that when the second supporting section is bent, the problem of stress concentration can be avoided because the groove is a groove that gradually expands from the groove bottom to the groove mouth.

[0027] In a possible implementation, the thickness of the support plate is 0.03-0.1 mm, and the thickness of the groove is 0.005-0.05 mm.

[0028] In a possible embodiment, the device further includes: a protective layer, which is detachably connected to a side of the support plate away from the display module, and has a boss that cooperates with the groove.

[0029] From the above content, it can be seen that: by setting a protective layer, damage to the support plate when the roller rolls on the support plate can be avoided; by cooperating with the boss and the groove, the boss is used to transfer the rolling force to the groove, ensuring that the support plate and the display module are evenly stressed when they are fitted, thereby ensuring the stability of the fitting between the support plate and the display module.

[0030] In one possible implementation, the first support segment is a stainless steel plate or a titanium alloy plate, the second support segment is a stainless steel plate or a titanium alloy plate, and the third support segment is a copper plate.

[0031] In a second aspect, the present application provides an electronic device including a display screen, wherein the display screen is any of the display screens described above.

[0032] It can be seen from the above content that the electronic device in this application includes the display screen proposed in the first aspect or any possible implementation method. Therefore, the electronic device with this display screen also has all the above technical effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic structural diagram of a curved screen mobile phone;

[0034] FIG2 is a schematic structural diagram of a first structure of a display screen;

[0035] FIG3 is a diagram showing the assembly process of the support module and the display module of the first structure of the display screen;

[0036] FIG4 is a schematic structural diagram of a second structure of a display screen;

[0037] FIG5 is a back view of a second structure of a display screen;

[0038] FIG6 is a schematic diagram of the upper surface of a second structure of a display screen;

[0039] FIG7 is a third structure of a display screen provided in an embodiment of the present application;

[0040] FIG8 is a front view of a third support plate of a display screen provided in an embodiment of the present application;

[0041] FIG9 is a diagram showing a first assembly relationship between the third support segment and the first support segment provided in an embodiment of the present application;

[0042] FIG10 is a diagram illustrating a second assembly relationship between the third support segment and the first support segment provided in an embodiment of the present application;

[0043] FIG11 is a diagram illustrating a third assembly relationship between the third supporting segment and the first supporting segment provided in an embodiment of the present application;

[0044] FIG12 is a fourth assembly relationship diagram of the third supporting segment and the first supporting segment provided in an embodiment of the present application;

[0045] FIG13 is a diagram showing a first shape of an indentation of a second supporting segment provided in an embodiment of the present application;

[0046] FIG14 is a diagram showing a second shape of the indentation of the second supporting segment provided in an embodiment of the present application;

[0047] FIG15 is a diagram showing a third shape of the indentation of the second supporting segment provided in an embodiment of the present application;

[0048] FIG16 is a fourth shape diagram of the indentation of the second supporting segment provided in an embodiment of the present application;

[0049] FIG17 is a fourth structure of a display screen provided in an embodiment of the present application;

[0050] FIG18 is a schematic diagram of the processing of the second supporting segment in the fourth structure of the display screen provided in an embodiment of the present application;

[0051] FIG19 is a schematic assembly diagram of the fourth structure of the display screen provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0053] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0054] With the development of flexible screens, it has become possible to create curved screen electronic devices with two or four curved sides. Among them, a display screen with two curved sides is called a double-curved screen, and a display screen with four curved sides is called a quad-curved screen.

[0055] The curved screen electronic devices mentioned in this article include but are not limited to mobile phones, laptops, tablets or computers, wearable devices, netbooks, walkie-talkies, handheld computers, point of sales (POS) machines, ultra-mobile personal computers (UMPCs), personal digital assistants (PDAs), virtual reality devices, wireless USB flash drives, Bluetooth speakers / headphones, driving recorders, security equipment, and other electronic devices with screens.

[0056] The following describes the structure of the curved screen of a curved screen electronic device using the curved screen mobile phone shown in FIG1 as an example. Other electronic devices can refer to the following description. FIG1 shows the structure of a curved screen mobile phone 100.

[0057] The curved screen phone 100 shown in Figure 1 includes a display screen 1 and a phone housing 2. Display screen 1 is a curved screen with curved edges on two or all four sides. Display screen 1 is sealed to phone housing 2, and the interiors of display screen 1 and phone housing 2 form a housing for the functional modules.

[0058] Functional modules include but are not limited to antenna structure, wireless communication module, processor, indicator, internal storage area, charging management module, power management module and battery.

[0059] It should be noted that the shape, size and material of the mobile phone housing 2 can be selected according to different needs. Optionally, the mobile phone housing 2 can be made of metal or acrylic.

[0060] The display screen 1 is used to display images, videos and other content. When using the curved screen mobile phone 100, the display screen 1 faces the user. The structure of the display screen 1 can be seen in Figure 2, where Figure 2 is a cross-sectional view taken along the AA direction in Figure 1, showing a first structure of the display screen 1.

[0061] It should be noted that the words "first", "second", "third", etc. in the description of this article are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0062] The display screen 1 in FIG2 includes a cover glass (CG) 11 , a display module 12 , a support module 0013 and a connection layer 14 , which are stacked in sequence.

[0063] The display module 12 includes an optically clear adhesive (OCA) 121 , a polarizer (Pol) 122 , and a display panel 123 , which are stacked in sequence.

[0064] The supporting module 0013 includes a foam layer 0131 and a copper foil layer 0132 which are stacked in sequence.

[0065] When the display screen 1 is assembled: one side of the glass cover plate 11 faces the user, the other side of the glass cover plate 11 is bonded to the optical adhesive 121, the other side of the optical adhesive 121 is bonded to the polarizer 122, and the other side of the polarizer 122 is connected to the light-emitting side of the display panel 123; the non-light-emitting side of the display panel 123 is connected to the foam layer 0131 through the connecting layer 14, and the other side of the foam layer 0131 is connected to the copper foil layer 0132.

[0066] The glass cover plate 11 is a transparent glass member. The display panel 123 is used to display images and videos. When the display screen 1 is a flexible display screen, the display panel 123 is also a flexible panel. The polarizer 122 is used to convert natural light passing through the glass cover plate 11 into linearly polarized light, allowing the display panel 123 to display images based on the linearly polarized light. The optical adhesive 121 has the characteristics of high adhesion, colorless transparency, and high light transmittance. In addition to connecting the glass cover plate 11 and the polarizer 122, the optical adhesive 121 does not hinder the display light emitted by the display panel 123 from propagating to the outside of the glass cover plate 11.

[0067] The foam layer 0131 is elastically deformable, providing a cushioning and vibration-absorbing function, protecting the non-light-emitting surface of the display panel 123 from impact. The copper foil layer 0132 has a certain degree of hardness, supporting the display panel 123, increasing the rigidity of the flexible display panel 123 and preventing deformation. The connecting layer 14 includes, but is not limited to, a pressure-sensitive adhesive (PSA) layer.

[0068] In some embodiments, two sides of the glass cover 11, two sides of the display module 12, and two sides of the support module 0013 are all curved, forming a double-curved display screen 1. If all four sides of the glass cover 11, the display module 12, and the support module 0013 are all curved, a quadrature-curved display screen 1 is formed.

[0069] It should be noted that the size of the glass cover 11 , the size of the display module 12 , and the curvature angle of the curved surface of the display screen 1 can be set according to the requirements of the curved screen mobile phone 100 and are not limited here.

[0070] The structure and connection relationship of the display screen 1 are described above. The following describes the process of assembling the support module 0013 of the display screen 1 to the display module 12 by rolling with reference to FIG3 . FIG3 is a diagram showing the assembly process of the support module 0013 and the display module 12 .

[0071] The display module 12 in FIG3 includes a curved surface segment 12b, a flat surface segment 12a, and a curved surface segment 12b along its width. The flat surface segment 12a is located in the center of the display screen 1, and two curved surface segments 12b are located on either side of the flat surface segment 12a. In some embodiments, the curved surface segments 12b are located on all four sides of the flat surface segment 12a.

[0072] The curvature angle of the curved surface segment 12b includes, but is not limited to, 70°, 75°, 80°, or 88°. The curvature angles of all curved surface segments 12b may be the same or different. When two curved surface segments 12b have the same curvature angle, the display module 12 has a symmetrical structure and is aesthetically pleasing.

[0073] It should be noted that the bending angle of the arc segment 12b herein is the bending angle of the curved surface of the display screen 1, and is the bending angle of all structures of the display screen 1. The bending angle will not be further described below, and this description may be referred to.

[0074] Before the support module 0013 is assembled with the display module 12 , the support module 0013 is a planar structure.

[0075] The process of assembling the support module 0013 to the display module 12 by rolling is as follows: the roller rolls and applies pressure to the planar structure of the support module 0013, so that the support module 0013 is attached to the non-light-emitting side of the display module 12; during the rolling process, the side of the support module 0013 forms an arc surface that fits with the arc surface segment 12b, thereby completing the fitting of the support module 0013 and the display module 12, and increasing the hardness of the display module 12.

[0076] Although the hardness of the display module 12 attached with the support module 0013 is improved, the copper foil layer 0132 has a seriously insufficient compression resistance, resulting in the display screen 1 being easily deformed after being touched multiple times.

[0077] Based on the above problems, FIG4 discloses a second structure of the display screen, which has good compression resistance. The second structure of the display screen 1 is described in detail below with reference to FIG4:

[0078] The display screen 1 includes a glass cover plate 11 , a display module 12 , a support layer 013 and a connection layer 14 which are stacked in sequence.

[0079] The structures of the glass cover 11 , the display module 12 and the connection layer 14 may be found in the structural description of the display screen 1 in FIG2 , and will not be described in detail here.

[0080] The support layer 013 is attached to the non-light-emitting side of the display module 12 via the connection layer 14. That is, the support layer 013 in the embodiment shown in FIG4 replaces the support module 0013 in the embodiment shown in FIG2.

[0081] In some embodiments, support layer 013 is made of a metal material with a harderness greater than copper, such as stainless steel (SUS) or titanium alloy. Since stainless steel is harder than the copper foil layer 0132 in the embodiment of FIG. 2 , support layer 013 has a greater compression resistance than support module 0013 in the embodiment of FIG. 2 .

[0082] However, due to the strong rigidity and high hardness of the support layer 013, its ability to conform to the curved surface of the display module 12 decreases during the rolling process of the support layer 013 onto the non-light-emitting side of the display module 12. This is particularly true for electronic devices with quad-curved screens, where the support layer 013 has two folding zones in two directions. When the support layer 013 is rolled onto the folding zones, peeling or bubbles are likely to occur at the joints, as shown in Figure 5. Figure 5 shows the display screen 1 facing away from the viewer.

[0083] The following describes in detail the problems that may occur in the support layer 013 and the display module 12 in conjunction with FIG5 .

[0084] The support layer 013 in FIG5 includes a curved segment 013b, a support segment 013a, and a curved segment 013b along the width direction; the display module 12 includes a flat segment 12a and a curved segment 12b.

[0085] The planar segment 12a and the arc segment 12b are described in the embodiment of Figure 3 and are not described in detail here. In some embodiments, the two curved segments 013b are symmetrically arranged and have the same structure.

[0086] When supporting layer 013 is attached to display module 12 using rollers, support segment 013a is aligned with flat segment 12a. The rollers gradually roll the sides of support segment 013a into curved segments 013b, which then align with curved segments 12b in a one-to-one correspondence. If display screen 1 is a quad-curved screen, the junction between adjacent curved segments 12b forms a double-fold zone.

[0087] When the curved segment 013b and the curved segment 12b fall off, a fall-off area P is formed between them. During later stages of reliability testing of the display screen 1, the size of the fall-off area P may further increase. The presence of the fall-off area P causes the refractive index of the curved segment 12b of the display module 12 to differ from that of the flat segment 12a, leading to visual defects on the display surface of the display screen 1. For example, the moiré pattern Q appears on the curved area of ​​the glass cover 11 in Figure 6. Figure 6 is a schematic diagram of the top surface of the display screen.

[0088] Based on the above problems, and to improve the problem of the curved section 013b of the relatively hard support layer 013 and the curved surface section 12b of the display module 12 being easily detached, FIG7 discloses a third structure of the display screen 1, which can alleviate the visual defect problem on the display surface of the display screen 1. The third structure of the display screen 1 is described in detail below with reference to FIG7:

[0089] The display screen 1 in FIG7 includes a glass cover plate 11 , a display module 12 , a support plate 13 and a connection layer 14 which are stacked in sequence.

[0090] The structures of the glass cover 11 , the display module 12 and the connection layer 14 may be found in the structural description of the display screen 1 in FIG2 , and will not be described in detail here.

[0091] The support plate 13 is attached to the non-light-emitting side of the display module 12 via the connection layer 14. That is, the support plate 13 is used in the embodiment shown in FIG7 to replace the support layer 013 in the embodiment shown in FIG4.

[0092] The support plate 13 includes a first support segment 131, a second support segment 132, and a third support segment 133 along the width direction. The display module 12 includes a flat segment 12a and a curved segment 12b along the width direction.

[0093] Among them, the first support section 131 is a flat plate that fits with the planar section 12a of the display module 12, the second support section 132 is located at the edge of the first support section 131, and the third support section 133 is located at the outer edge of the second support section 132, and a bent section 13b is formed from the side of the second support section 132 connected to the first support section 131 to the side of the third support section 133 away from the second support section 132, and the bent section 13b is fitted one-to-one with the curved surface section 12b of the display module 12.

[0094] It should be noted that the second supporting section 132 is connected to the first supporting section 131 , that is, the second supporting section 132 is located at the beginning of the bending section 13b.

[0095] In some embodiments, when the second support segment 132 and the third support segment 133 are in contact with each other, the second support segment 132 and the third support segment 133 form a bent segment 13b; if there is a connection gap between the second support segment 132 and the third support segment 133, the second support segment 132, the connection gap and the third support segment 133 form a bent segment 13b.

[0096] The bending angle of the curved segment 13b is the same as that of the curved segment 12b. When one set of opposing sides of the first support segment 131 connects to both the second support segment 132 and the third support segment 133, the corresponding display screen 1 is a double-curved screen. When both sets of opposing sides of the first support segment 131 connect to both the second support segment 132 and the third support segment 133, the corresponding display screen 1 is a quad-curved screen.

[0097] In some embodiments, the first support segment 131 is made of a metal layer having a harderness greater than copper, such as stainless steel (SUS) or a titanium alloy; the second support segment 132 is made of a metal layer having a harderness greater than copper, such as stainless steel (SUS) or a titanium alloy, and has an indentation on its surface; and the third support segment 133 is made of a metal layer such as copper foil, stainless steel (SUS), or a titanium alloy. In other words, the first support segment 131 and the third support segment 133 can be made of the same material or different materials.

[0098] It should be noted that the surface of the second support segment 132 is at least one of the upper surface close to the display module 12 and the lower surface away from the display module 12. In the thickness direction, the upper surface of the second support segment 132 is on the same side as the upper surface of the display screen 1, and the lower surface of the second support segment 132 is on the same side as the lower surface of the display screen 1.

[0099] The surface of the second support segment 132 has an indentation, which reduces the hardness of the second support segment 132 compared to the hardness of the first support segment 131. Therefore, the stress of the second support segment 132 is reduced compared to the stress of the first support segment 131, which is beneficial for the bending of the second support segment 132, thereby facilitating the fitting of the bent segment 13b and the arc surface segment 12b, and improving the problem of easy detachment of the support layer 013 and the arc surface segment 12b in the embodiment of Figure 4.

[0100] In an optional embodiment, the material of the second support segment 132 is the same as that of the first support segment 131. When the material of the second support segment 132 is the same as that of the first support segment 131, the two can be an integral structure, that is, the second support segment 132 is obtained by machining an indentation on the first support segment 131.

[0101] It should be noted that during the process of machining the indentation on the first support section 131, the second support section 132 is formed: because the thickness of the support plate 13 of the electronic device is very small, in some embodiments, the thickness of the first support section 131 is equal to the thickness of the support plate 13, or even less than the thickness of the support plate 13. Therefore, the thickness of the first support section 131 is also very small. When machining the indentation on the surface of the first support section 131, if the pressure of the machining indentation is high, the other surface of the first support section 131 tends to develop a shape opposite to the indentation. That is, when the surface of the first support section 131 is concave, the other surface has a protruding point that protrudes outward. When assembling this support plate 13, the side of the support plate 13 with the indentation is aligned with the display module 12, while the surface opposite the indentation faces away from the display module 12. The protruding point on the surface opposite the indentation does not affect the alignment of the support plate 13 with the display module 12. Moreover, the protruding point faces the interior of the accommodation space of the curved screen mobile phone 100, so it does not affect the installation of the functional modules.

[0102] On the basis of the above, if the material of the third support segment 133 is copper foil, and the materials of the first support segment 131 and the second support segment 132 are both stainless steel, since the hardness of the copper foil is less than that of the stainless steel, it can be beneficial for the third support segment 133 to bend, thereby facilitating the fitting of the bent segment 13b and the curved surface segment 12b, thereby improving the problem of easy detachment of the support layer 013 and the curved surface segment 12b in the embodiment of Figure 4.

[0103] It should be noted that, due to the indentation on the surface of the second support segment 132, the hardness of the second support segment 132 is less than that of the first support segment 131. The third support segment 133 is a copper foil plate, which has a lower hardness than the first support segment 131. Furthermore, depending on the depth of the indentation, in some embodiments, the hardness of the third support segment 133 is also less than that of the second support segment 132. The hardness of the second support segment 132 is less than that of the first support segment 131, and the hardness of the third support segment 133 is less than that of the second support segment 132. This allows the hardness of the support plate 13 to gradually change, ensuring both support strength and lamination stability.

[0104] The above content has described the structure and materials of the support plate 13. The following describes the dimensional relationship of various parts of the support plate 13 in conjunction with Figure 8. Figure 8 is a front view of the support plate 13.

[0105] 8 , the width of the bending section 13b of the support plate 13 is L1, and the width of the second support section 132 is L2. In some embodiments, the width L2 of the second support section 132 and the width L1 of the bending section 13b satisfy the relationship: L2 / L1=1 / 7-1 / 5.

[0106] The width of the first support section 131 can be set according to different needs. In addition, the relationship between the width of the bending section 13b and the width of the support plate 13 can refer to the size of the bending section 13b of the existing curved screen.

[0107] A set of example data is set as follows: the width of the support plate 13 is 72 mm, the width L1 of the bending section 13b is 12 mm, the width L2 of the second support section 132 is 2 mm, and the width of the connection gap between the second support section 132 and the third support section 133 is 0.5 mm-1 mm.

[0108] It should be noted that the direction of the line connecting the two bending sections 13b in Figure 8 is the width direction, and the direction perpendicular to the width direction is the length direction. All width directions and length directions in this article refer to this description.

[0109] The above content describes the position and width of the second support section 132 of the support plate 13. The following describes the assembly method of the third support section 133 in conjunction with Figures 9 to 12. Figures 9 to 12 respectively show an assembly method of the third support section 133.

[0110] It should be noted that the second support segment 132 in Figures 9 to 12 can be directly processed on the upper surface of the first support segment 131 to obtain the second support segment 132. Therefore, the connection between the third support segment 133 and the second support segment 132 can also be considered as the connection between the third support segment 133 and the first support segment 131, and then the second support segment 132 is processed on the first support segment 131 to complete the processing of the support plate 13.

[0111] The following description uses the example of second support segment 132 being machined onto first support segment 131, with third support segment 133 connected to the outer edge of first support segment 131. If second support segment 132 and first support segment 131 are separate structures, and third support segment 133 is assembled to the outer edge of second support segment 132, the connection method can be referred to below.

[0112] 9 has a protrusion 1331 on the side close to the first support segment 131, and the first support segment 131 has a slot on the side close to the third support segment 133, and the third support segment 133 and the first support segment 131 are connected via the protrusion 1331 and the slot.

[0113] In some embodiments, the thickness of the third support segment 133 is the same as the thickness of the first support segment 131 and is equal to the thickness D of the support plate 13. The protrusion 1331 of the third support segment 133 is located in the middle of the third support segment 133 and has a thickness D1. In some embodiments, the thickness D1 of the protrusion 1331 is D / 2, the distance from the protrusion 1331 to the upper surface of the first support segment 131 is D / 4, and the distance from the protrusion 1331 to the lower surface of the first support segment 131 is D / 4.

[0114] The second supporting segment 132 is located at the outer edge of the third supporting segment 133 . Therefore, a connection gap exists between the surface of the third supporting segment 133 and the surface of the second supporting segment 132 .

[0115] In some embodiments, the thickness H of the second support segment 132 includes but is not limited to D / 4.

[0116] Based on Figure 9 , the slot of the first support segment 131 can be a dovetail slot, and the protrusion 1331 on the third support segment 133 can be a dovetail-shaped protrusion that mates with the dovetail slot. The dovetail-shaped protrusion and the dovetail slot mate in a mortise and tenon joint, which can limit the width of the first support segment 131 and the third support segment 133, thereby improving the assembly stability of the first support segment 131 and the third support segment 133.

[0117] It should be noted that when the first supporting segment 131 and the third supporting segment 133 are assembled, the dovetail protrusion is inserted into the dovetail groove by plugging.

[0118] The third support segment 133 in FIG10 has a stepped surface on its side close to the first support segment 131 , and the third support segment 133 has a first segment 1332 and a second segment 1333 along the width direction, wherein the first segment 1332 is in contact with the second support segment 132 .

[0119] The thickness of the second section 1333 is the same as the thickness D of the support plate 13 , and the thickness of the first section 1332 is smaller than the thickness of the second section 1333 , so that the first section 1332 and the second section 1333 form the aforementioned stepped surface.

[0120] In some embodiments, the thickness D2 of the first section 1332 is D / 2, and the thickness H of the second supporting section 132 includes but is not limited to D / 2.

[0121] The first section 1332 may optionally be located above the center of the thickness of the first section 1332 , or below the center of the thickness of the first section 1332 .

[0122] In some embodiments, the third support segment 133 may be provided with multiple sections with different thicknesses along the width direction to form multiple step surfaces, all of which are within the protection range.

[0123] The third support segment 133 in FIG11 includes a first segment 1332 and a second segment 1333 along the width direction, with the first segment 1332 being aligned with the second support segment 132. The thickness of the second segment 1333 is the same as the thickness D of the support plate 13, while the thickness of the first segment 1332 is less than that of the second segment 1333. A gap is formed between the first segment 1332 and the second segment 1333, forming an L-shaped groove between the gap and the bottom of the first segment 1332.

[0124] The first support section 131 has a protrusion 1311 that engages with the L-shaped groove. The engagement of the protrusion 1311 with the L-shaped groove can limit the first support section 131 and the third support section 133 along the width direction, thereby improving the stability of the first support section 131 and the third support section 133 after assembly.

[0125] In some embodiments, the thickness of the first segment 1332 is the same as the thickness H of the second supporting segment 132 , which is 3D / 4, and the height D3 of the gap is D / 2.

[0126] It should be noted that when the first supporting segment 131 and the third supporting segment 133 are assembled, the protrusion 1311 is inserted into the L-shaped groove by plugging.

[0127] The third supporting section 133 in FIG. 12 is a U-shaped member with a receiving groove formed in the middle. The first supporting section 131 is assembled in the receiving groove along the width direction.

[0128] In some embodiments, the thickness of the side of the third support segment 133 is the same as the thickness D of the support plate 13, and the thickness D4 of the bottom of the third support segment 133 is 3D / 5. The thickness H of the second support segment 132 is D / 2.

[0129] The above describes several methods for assembling the third support segment 133 with the first support segment 131. These methods are variations of the mortise and tenon joint method, and other mortise and tenon joint methods may be used in some embodiments. To ensure a secure connection between the third support segment 133 and the first support segment 131, in some embodiments, the assembled third support segment 133 in the above embodiments is securely connected to the first support segment 131 by rolling.

[0130] The rolling process involves pressing a flat blank of a defined shape through a die under pressure from a punch to create an open, hollow part. Rolling utilizes pressure and tensile ductility. While smelting can alter the chemical composition of steel, rolling does not. The principles of rolling are similar to forging (solid-state forming), which only forges steel, ultimately changing its physical state.

[0131] It should be noted that, based on the above-mentioned calendering process, calendering is to calender the material in the blank state to obtain the above-mentioned first support segment 131 and third support segment 133. Therefore, the third support segment 133 of the blank and the first support segment 131 of the blank are assembled using the assembly method disclosed in the above-mentioned embodiment, and the calendering process is used to obtain the support plate 13 of the required thickness.

[0132] Since the above embodiment discloses the relationship between the size of the required support plate 13 and the size of the first support segment 131, the size of the third support segment and the first support segment of the blank can be increased proportionally according to the change in the thickness D of the support plate 13 during the rolling process.

[0133] The second support segment 132 can be obtained by machining on the first support segment 131 after the first support segment 131 and the third support segment 133 of required thickness are obtained by a calendering process.

[0134] The calendering process is not described in detail here. This application only uses the calendering process to achieve the fixed connection between the first support segment 131 and the third support segment 133. Of course, the methods for achieving the fixed connection between the first support segment 131 and the third support segment 133 include but are not limited to welding, bonding, etc.

[0135] The above details the assembly method, connection method, and dimensional relationship of the first support segment 131 and the third support segment 133. The shape of the indentation of the second support segment 132 is described below in conjunction with Figures 13 to 16. Figures 13 to 16 provide a shape of an indentation, respectively.

[0136] The indentation on the second supporting section 132 in FIG. 13 is a vertical groove, and the extending direction of the vertical groove is the length direction of the supporting plate 13 .

[0137] 14 , the indentations on the second support segment 132 are pits, and convex points are formed on the surface of the second support segment 132. In some embodiments, the convex points include but are not limited to circular convex points.

[0138] In some proofing schemes, the test thicknesses of the second support segment 132 are 0.03mm and 0.05mm respectively, and the depth range of the stamping convex and concave points on the surface of the second support segment 132 is 0.001mm-0.01mm. Among them, the yield strength of the second support segment 132 with a thickness of 0.03mm after stamping is reduced from 1531Mpa to 1045Mpa, and the tensile strength is reduced from 1756Mpa to 1108Mpa; the yield strength of the second support segment 132 with a thickness of 0.05mm is reduced from 329Mpa to 150Mpa, and the tensile strength is reduced from 561Mpa to 253Mpa.

[0139] The indentation on the second supporting segment 132 in FIG. 15 and the indentation on the second supporting segment 132 in FIG. 16 are both irregular shapes.

[0140] In some embodiments, the indentation on the second supporting segment 132 includes but is not limited to being obtained by stamping.

[0141] It should be noted that the indentations on the surface of the second support segment 132 are multiple dimples along the length of the support plate 13, allowing the second support segment 132 to bend along the dimples. Therefore, as long as the dimples are arranged along the length of the support plate 13, they are within the protection range and will not be listed here.

[0142] In some embodiments, when the bending segments 13 b are located at both ends of the width of the support segment 13 , the indentations are multiple pits along the width direction of the support plate 13 .

[0143] The above embodiment discloses a method of stamping an indentation on the surface of the second support segment 132 to reduce the hardness of the second support segment 132, thereby reducing the stress in the second support segment 132. In some embodiments, other methods can be used to reduce the hardness of the second support segment 132. Other methods of reducing the hardness of the second support segment 132 are described below in conjunction with the display screen structures disclosed in Figures 17 and 18.

[0144] The difference between the second support segment 132 in Figure 17 and the second support segment 132 in Figure 7 is that a groove is machined on the surface of the second support segment 132 in Figure 17. The other structures of the display screen 1 are the same as those in Figure 7 and will not be repeated here.

[0145] By machining a groove on the surface of the second support segment 132 , the thickness of the second support segment 132 can be reduced, thereby reducing the hardness of the second support segment 132 and achieving the purpose of reducing the stress of the second support segment 132 .

[0146] As shown in FIG18 , in some embodiments, a groove is machined on the surface of the first support segment 131 by laser, and the groove obtained by the machining is the second support segment 132. Of course, other machining methods can also be used to machine the groove on the surface of the first support segment 131 to obtain the second support segment 132.

[0147] In some embodiments, the surface of the first support segment 131 can be at least one of an upper surface and a lower surface. The laser-formed groove extends along the length or width of the support plate 13, and its width is equal to the width L2 of the second support segment 132. The depth of the groove extends along the thickness of the support plate 13, and the depth is not specifically limited. The width L2 of the second support segment 132 meets the conditions in the above-described embodiment.

[0148] When the bending sections b are located on both sides of the display screen 1 in the width direction, the groove extends along the length direction of the support plate 13 ; when the bending sections 13b are located on both sides of the display screen 1 in the length direction, the groove extends along the width direction of the support plate 13 .

[0149] For example, if the thickness of the first support segment 131 is in the range of 0.03-0.1 mm, the thickness of the laser-machined groove can be 0.005-0.05 mm. In some proofing schemes, the optimal combination is a first support segment 131 thickness of 0.03 mm and a laser-machined groove thickness of 0.08-0.1 mm. In some embodiments, the thickness of the first support segment 131 is the same as the thickness of the support plate 13.

[0150] The groove on the surface of the first support segment 131 can reduce the thickness of the first support segment 131, that is, the thickness of the second support segment 132 is less than the thickness of the first support segment 131, so that the hardness of the second support segment 132 is less than the hardness of the first support segment 131, which is conducive to the bending of the second support segment 132, thereby improving the problem of easy detachment of the support layer 013 and the arc surface segment 12b in the embodiment of Figure 4.

[0151] According to the processing characteristics of laser, the side of the obtained groove is an inclined surface. In some embodiments, the inclination angle ranges from 30° to 90°.

[0152] It should be noted that the sides of the groove obtained by laser processing are inclined, which can also release the extrusion stress when the second support section 132 is bent, which is conducive to further improving the falling-off problem.

[0153] Because the thickness of the second support segment 132 is smaller than that of the first support segment 131, when the support plate 13 is attached to the display module 12, the grooves on the surface of the second support segment 132 cannot withstand the rolling force, which affects the attachment of the second support segment 132 to the display module 12. To address this issue, the embodiment shown in FIG19 discloses a method for attaching the support plate 13 to the display module 12.

[0154] As shown in FIG. 19 , the display screen 1 includes a display module 12 , a support plate 13 , a connection layer 14 and a protective layer 15 .

[0155] The structures of the display module 12 , the support plate 13 and the connection layer 14 may be found in the structural description of the display screen 1 in FIG17 , and will not be described in detail here.

[0156] The protective layer 15 includes a boss 151 , and the shape and size of the boss 151 are adapted to the groove on the surface of the second supporting section 132 of the support plate 13 .

[0157] In some embodiments, the protective layer 15 is a plastic film or a silicone film that protects the support plate 13 from being damaged by direct force. The protective layer 15 is bonded to the side of the support plate 13 away from the display module 12, and the boss 151 is assembled in the groove and fits in the groove.

[0158] The roller applies external force to the support plate 13 by rolling the protective layer 15, causing the support plate 13 to adhere to the display module 12 via the connecting layer 14. Because the side of the protective layer 15 away from the support plate 13 is flat, and the boss 151 acts to transmit the roller's force to the second support segment 132, this helps ensure the adhesion between the second support segment 132 and the display module 12.

[0159] After the support plate 13 and the display module 12 are attached to each other, the protective layer 15 can be removed.

[0160] It should be noted that any method that can reduce the stress at the position of the first supporting segment 131 close to the third supporting segment 133 is within the protection range.

[0161] It should be noted that the electronic device using the display screen 1 disclosed in the embodiments of FIG. 7 and FIG. 17 also has all the technical effects brought by the display screen 1 .

[0162] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A display screen, characterized in that: include: A cover plate, a display module and a support plate, wherein the light-emitting side of the display module is connected to the cover plate, and the support plate is connected to the non-light-emitting side of the display module; The display module includes a curved segment and a flat segment; The support plate includes a first support segment, a second support segment and a third support segment, the second support segment is located between the first support segment and the third support segment, the first support segment is in contact with the plane segment, the second support segment, the third support segment and the connecting gap between the second support segment and the third support segment form a bending segment, and the bending segment is in contact with the arc segment; The surface of the second support segment has a recessed area, the hardness of the second support segment is smaller than the hardness of the first support segment, and the hardness of the third support segment is smaller than the hardness of the first support segment or smaller than the hardness of the second support segment.

2. The display screen according to claim 1, characterized in that: The material of the first supporting segment is the same as that of the second supporting segment, and the hardness of the third supporting segment is smaller than that of the second supporting segment.

3. The display screen according to claim 1 or 2, characterized in that: The width of the bending section is L1, the width of the second supporting section is L2, and the relationship between the width L2 of the second supporting section and the width L1 of the bending section satisfies: L2 / L1=1 / 7-1 / 5.

4. The display screen according to any one of claims 1 to 3, characterized in that: The first supporting section and the second supporting section are an integral piece, and the second supporting section is a structure formed by arranging the recessed area on the surface of the first supporting section.

5. The display screen according to claim 4, characterized in that: The side edge of the third supporting segment is connected to the edge side edge of the first supporting segment, and the first supporting segment and the third supporting segment are crimped and fixed by a calendering process.

6. The display screen according to claim 5, characterized in that: The side edge of the third supporting section is cooperatively connected with the side edge of the first supporting section via a concave-convex structure.

7. The display screen according to claim 6, characterized in that: The concave-convex structure includes: a dovetail protrusion and a dovetail groove that are matched and connected, Or L-slots and bumps for mating connections.

8. The display screen according to any one of claims 1 to 7, characterized in that: The recessed area is an indentation, and the indentation is located on a side of the support plate close to the display module.

9. The display screen according to any one of claims 1 to 7, characterized in that: The recessed area is a groove, and the groove is located on a side of the support plate away from the display module.

10. The display screen according to claim 9, characterized in that: The groove is a groove processed by laser, and the side wall of the groove is an inclined wall. The groove is a groove that gradually expands from the groove bottom to the groove mouth of the groove.

11. The display screen according to claim 9 or 10, characterized in that: The thickness of the support plate is 0.03-0.1 mm, and the thickness of the groove is 0.005-0.05 mm.

12. The display screen according to any one of claims 9 to 11, characterized in that: Also includes: A protective layer is detachably connected to a side of the support plate away from the display module, and the protective layer has a boss that matches the groove.

13. The display screen according to any one of claims 1 to 12, characterized in that: The first supporting section is a stainless steel plate or a titanium alloy plate, the second supporting section is a stainless steel plate or a titanium alloy plate, and the third supporting section is a copper plate.

14. An electronic device comprising a display screen, wherein the display screen is the display screen according to any one of claims 1 to 13.

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