Display screen and electronic equipment

Abstract

The invention provides a display screen and electronic equipment. The display screen comprises a display module and a display module, wherein the display module comprises a cambered surface section and a plane section; the supporting plate 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 is attached to the plane section, the second supporting section, the third supporting section and a connecting gap between the second supporting section and the third supporting section form a bent section, and the bent section is attached to the cambered surface section; the surface of the second supporting section is provided with a concave area, 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 second supporting section is provided with a concave area, so that the hardness of the second supporting section is smaller than that of the first supporting section, and bending of the second supporting section is facilitated. The hardness of the third supporting section is smaller than that of the first supporting section or the second supporting section, bending of the third supporting section is facilitated, attaching of the bent section and the cambered surface section is facilitated, and the problem that the supporting plate and the display module are prone to falling off is solved.

Description

Technical Field

[0001] The present application relates to the field of electronic devices, in particular to a display screen and an electronic device. Background Art

[0002] With the development of flexible screens, curved screen electronic devices with curved side edges have become possible. Among them, a display screen with curved sides is a double-curved screen, and a display screen with curved sides is a quad-curved screen.

[0003] The curved display screen includes a display module and a supporting module for increasing the hardness of the display module. The supporting 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 supporting module and the display module, there is still room for improvement in the hardness and extrusion resistance of the current supporting module.

[0004] 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. Summary of the invention

[0005] The present application provides a display screen to ensure 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 display screen.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] 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 comprises a curved surface segment and a flat surface segment; the support plate comprises 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.

[0008] It can be seen from the above content that: the first supporting section of the support plate fits with the planar section of the display module to achieve support for 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 achieve support for the arc 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 arc section, and improving the problem of easy detachment of the support plate and the display module.

[0009] In a possible implementation manner, 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.

[0010] It can be seen from the above content 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.

[0011] In a possible implementation manner, 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.

[0012] In a possible implementation manner, 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.

[0013] 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.

[0014] In a possible implementation, a side edge of the third supporting segment is connected to an 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.

[0015] In a possible implementation manner, the side edge of the third supporting segment is cooperatively connected with the side edge of the first supporting segment via a concave-convex structure.

[0016] It can be seen from the above content that the connection between the third support segment and the first support segment can be limited by using a concave-convex structure, and then the connection between the first support segment and the third support segment can be achieved by crimping and fixing them by calendering.

[0017] In a possible implementation, the concave-convex structure includes: a dovetail-shaped protrusion and a dovetail groove that are matched and connected, or an L-shaped groove and a protrusion that are matched and connected.

[0018] It can be seen from the above content 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.

[0019] In a possible implementation manner, the recessed area is an indentation, and the indentation is located on a side of the support plate close to the display module.

[0020] It can be seen from the above 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 another direction and affecting the assembly of the support plate and the display module.

[0021] In a possible implementation manner, the recessed area is a groove, and the groove is located on a side of the support plate away from the display module.

[0022] From the above content, it can be seen that the area size of the support plate and the display module should be ensured to fit together.

[0023] In a possible implementation manner, the groove is a groove processed by laser, and the sidewalls of the groove are inclined walls, and the groove is a groove that gradually expands from the groove bottom to the groove mouth of the groove.

[0024] 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.

[0025] 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.

[0026] In a possible implementation manner, the device further includes: a protective layer, the 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.

[0027] 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 together, thereby ensuring the stability of the fitting between the support plate and the display module.

[0028] In a 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.

[0029] In a second aspect, the present application provides an electronic device, including a display screen, and the display screen is any of the display screens described above.

[0030] It can be seen from the above content that the electronic device in the present application includes the display screen proposed in the first aspect or any possible implementation manner. Therefore, the electronic device with the display screen also has all the above-mentioned technical effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a curved screen mobile phone;

[0032] Figure 2 is a structural schematic diagram of a first structure of a display screen;

[0033] Figure 3 A diagram showing the assembly process of the support module and the display module of the first structure of the display screen;

[0034] Figure 4 is a structural schematic diagram of a second structure of a display screen;

[0035] Figure 5 This is a back view of the second structure of the display screen;

[0036] Figure 6 It is a schematic diagram of the upper surface of the second structure of the display screen;

[0037] Figure 7 The third structure of the display screen provided in the embodiment of the present application;

[0038] Figure 8 A front view of a third type of support plate of a display screen provided in an embodiment of the present application;

[0039] Fig. 9 A diagram of a first assembly relationship between a third supporting section and a first supporting section provided in an embodiment of the present application;

[0040] Fig.10 A diagram of a second assembly relationship between the third supporting section and the first supporting section provided in an embodiment of the present application;

[0041] Fig.11 A third assembly relationship diagram of the third supporting section and the first supporting section provided in the embodiment of the present application;

[0042] Fig.12 A fourth assembly relationship diagram of the third supporting section and the first supporting section provided in the embodiment of the present application;

[0043] Fig.13 A first shape diagram of the indentation of the second supporting segment provided in an embodiment of the present application;

[0044] Fig.14 A second shape diagram of the indentation of the second supporting segment provided in an embodiment of the present application;

[0045] Fig.15 A third shape diagram of the indentation of the second supporting segment provided in an embodiment of the present application;

[0046] Fig.16 A fourth shape diagram of the indentation of the second supporting segment provided in an embodiment of the present application;

[0047] Fig.17 The fourth structure of the display screen provided in the embodiment of the present application;

[0048] Fig.18 A schematic diagram of processing of the second supporting segment in the fourth structure of the display screen provided in an embodiment of the present application;

[0049] Fig.19 This is a schematic assembly diagram of the fourth structure of the display screen provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] 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 and appended claims of the present application, the singular expressions "one", "a kind", "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 objects associated before and after are in an "or" relationship.

[0051] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0052] With the development of flexible screens, curved screen electronic devices with curved edges on both sides or four sides have become possible. Among them, a display screen with curved edges on both sides is a double-curved screen, and a display screen with curved edges on all four sides is a quad-curved screen.

[0053] 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 (UMPC), personal digital assistants (PDA), virtual reality devices, wireless USB flash drives, Bluetooth speakers / headphones, driving recorders, security equipment and other electronic devices with screens.

[0054] Below Figure 1The curved screen mobile phone shown in the example is used to explain the structure of the curved screen of the curved screen electronic device. Other electronic devices can refer to the following description. Figure 1 The structure of the curved screen mobile phone 100 is shown.

[0055] Figure 1 The curved screen mobile phone 100 includes a display screen 1 and a mobile phone housing 2. The display screen 1 is a curved screen with curved edges on both sides or all four sides; the display screen 1 is sealed and mounted on the mobile phone housing 2, and the interior of the display screen 1 and the mobile phone housing 2 forms a housing space for the functional module.

[0056] The functional modules include but are not limited to an antenna structure, a wireless communication module, a processor, an indicator, an internal storage area, a charging management module, a power management module and a battery.

[0057] 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.

[0058] The display screen 1 is used to display images, videos and other contents. When the curved screen mobile phone 100 is used, the display screen 1 faces the user. The structure of the display screen 1 can be seen in Figure 2 As shown, Figure 2 for Figure 1 The cross-sectional view taken along the AA direction shows the first structure of the display screen 1 .

[0059] 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 or order.

[0060] Figure 2 The display screen 1 includes a cover glass (CG) 11, a display module 12, a support module 0013 and a connection layer 14 which are stacked in sequence.

[0061] The display module 12 includes an optically clear adhesive (OCA) 121 , a polarizer (Pol) 122 , and a display panel (panel) 123 which are stacked in sequence.

[0062] The supporting module 0013 includes a foam layer 0131 and a copper foil layer 0132 which are stacked in sequence.

[0063] 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 glue 121, the other side of the optical glue 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.

[0064] Among them, the glass cover plate 11 is a transparent glass piece. 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 a flexible panel. The polarizer 122 is used to convert the natural light passing through the glass cover plate 11 into linear polarized light, so that the display panel 123 can display images according to the linear polarized light. The optical glue 121 has the characteristics of high adhesion, colorless transparency and high light transmittance, so that the optical glue 121, on the basis of connecting the glass cover plate 11 and the polarizer 122, will not hinder the display light emitted by the display panel 123 from propagating to the outside of the glass cover plate 11.

[0065] The foam layer 0131 can be elastically deformed, and therefore has a buffering and vibration absorbing function, and can provide anti-impact protection for the non-light-emitting surface of the display panel 123. The copper foil layer 0132 has a certain hardness, and can support the above-mentioned display panel 123 to increase the hardness of the flexible display panel 123 and prevent the display panel 123 from deforming. The connection layer 14 includes but is not limited to a pressure-sensitive adhesive (PSA) layer.

[0066] In some embodiments, two sides of the glass cover plate 11, two sides of the display module 12, and two sides of the support module 0013 are all curved surfaces, forming a hyperbolic display screen 1. If four sides of the glass cover plate 11, four sides of the display module 12, and four sides of the support module 0013 are all curved surfaces, a four-curved display screen 1 is formed.

[0067] 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.

[0068] The above describes the structure and connection relationship of the display screen 1. Figure 3 The process of assembling the support module 0013 of the display screen 1 to the display module 12 by rolling is introduced. Figure 3 It is a diagram of the assembly process of the support module 0013 and the display module 12.

[0069] Figure 3The display module 12 includes a curved surface segment 12b, a plane segment 12a and a curved surface segment 12b along the width direction. The plane segment 12a is located in the middle of the display screen 1, and the two curved surface segments 12b are distributed on both sides of the plane segment 12a. In some embodiments, the curved surface segments 12b are located on four sides of the plane segment 12a.

[0070] The bending angle of the arc segment 12b includes but is not limited to 70°, 75°, 80° or 88°. The bending angles of all the arc segments 12b can be the same or different. When the bending angles of two arc segments 12b are the same, the display module 12 is a symmetrical structure with good aesthetics.

[0071] 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, which is the bending angle of all structures of the display screen 1. The bending angle will not be described below, and this description may be referred to.

[0072] Before the support module 0013 and the display module 12 are assembled, the support module 0013 is a planar structure.

[0073] 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 roller 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.

[0074] 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, so that the display screen 1 is easily deformed after being touched multiple times.

[0075] Based on the above problems, Figure 4 The second structure of the display screen is disclosed in the specification, which has good compression resistance. Figure 4 The second structure of the display screen 1 is described in detail:

[0076] The display screen 1 comprises a glass cover plate 11 , a display module 12 , a support layer 013 and a connection layer 14 which are stacked in sequence.

[0077] The structures of the glass cover plate 11, the display module 12 and the connection layer 14 are shown in FIG. Figure 2 The structure of the display screen 1 is described above and will not be elaborated here.

[0078] The support layer 013 is attached to the non-light-emitting side of the display module 12 through the connection layer 14. Figure 4In the embodiment shown, the support layer 013 is used to replace Figure 2 The supporting module 0013 in the embodiment.

[0079] In some embodiments, the support layer 013 is made of stainless steel (SUS) or titanium alloy or other metal materials with a hardness greater than copper. Figure 2 The hardness of the copper foil layer 0132 in the embodiment, therefore, the compression resistance of the support layer 013 is greater than Figure 2 The extrusion resistance of the support module 0013 in the embodiment.

[0080] However, due to the strong rigidity and high hardness of the support layer 013, the ability of the support layer 013 to adapt to the curved surface of the display module 12 is reduced during the process of rolling the support layer 013 to the non-light-emitting side of the display module 12. Especially for electronic devices with four-curved screens, due to the presence of double folding areas in two directions, when the support layer 013 is laminated to the double folding areas by rolling, the lamination between the support layer 013 and the double folding areas is prone to cracks. Figure 5 The peeling or bubble problem shown in FIG. Figure 5 This is a back view of display screen 1.

[0081] The following combination Figure 5 The problems occurring in the support layer 013 and the display module 12 are described in detail.

[0082] Figure 5 The support layer 013 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.

[0083] Among them, the plane segment 12a and the arc segment 12b refer to Figure 3 The description in the embodiment is not repeated here. In some embodiments, the two curved sections 013b are symmetrically arranged and have the same structure.

[0084] When the support layer 013 is attached to the display module 12 by rolling with a roller, the support segment 013a is fitted with the flat segment 12a, and the side of the support segment 013a is gradually rolled into a curved segment 013b under the action of the roller, and the curved segment 013b is fitted with the curved segment 12b in a one-to-one correspondence. When the display screen 1 is a four-curved screen, the connection between adjacent curved segments 12b is a double folding area.

[0085] When the curved segment 013b and the curved segment 12b fall off, a fall-off area P is formed between the two. In the later stage of the reliability test of the display screen 1, the size of the fall-off area P may be further increased. Due to the existence of the fall-off area P, the refractive index of the curved segment 12b of the display module 12 is different from that of the flat segment 12a, resulting in visual defects on the display surface of the display screen 1, such as Figure 6 A mura Q appears on the arc area of ​​the middle glass cover plate 11. Figure 6 Schematic diagram of the upper surface of the display screen.

[0086] Based on the above problems, in order to improve the problem that the curved section 013b of the support layer 013 with higher hardness and the curved surface section 12b of the display module 12 are easy to fall off, Figure 7 The third structure of the display screen 1 is disclosed in the specification, which can alleviate the visual defect problem of the display surface of the display screen 1. Figure 7 The third structure of the display screen 1 is described in detail:

[0087] Figure 7 The display screen 1 includes a glass cover plate 11, a display module 12, a support plate 13 and a connection layer 14 which are stacked in sequence.

[0088] The structures of the glass cover plate 11, the display module 12 and the connection layer 14 are shown in FIG. Figure 2 The structure of the display screen 1 is described above and will not be elaborated here.

[0089] The support plate 13 is attached to the non-light-emitting side of the display module 12 through the connection layer 14. Figure 7 In the embodiment shown, the support plate 13 is used to replace Figure 4 The support layer 013 in the embodiment.

[0090] 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 plane segment 12a and a curved segment 12b along the width direction.

[0091] Among them, the first support segment 131 is a flat plate that fits with the planar segment 12a of the display module 12, the second support segment 132 is located at the edge of the first support segment 131, the third support segment 133 is located at the outer edge of the second support segment 132, and a bending segment 13b is formed from the side of the second support segment 132 connected to the first support segment 131 to the side of the third support segment 133 away from the second support segment 132, and the bending segment 13b is fitted one-to-one with the curved segment 12b of the display module 12.

[0092] 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.

[0093] In some embodiments, when the second support segment 132 and the third support segment 133 are in contact, the second support segment 132 and the third support segment 133 form a bending segment 13b; if there is a connecting gap between the second support segment 132 and the third support segment 133, the second support segment 132, the connecting gap and the third support segment 133 form a bending segment 13b.

[0094] The bending angle of the bent section 13b is the same as the bending angle of the curved surface section 12b. When a set of opposite sides of the first support section 131 are connected to the second support section 132 and the third support section 133, the corresponding display screen 1 is a double-curved screen; when two sets of opposite sides of the first support section 131 are connected to the second support section 132 and the third support section 133, the corresponding display screen 1 is a quad-curved screen.

[0095] In some embodiments, the first support segment 131 is made of stainless steel (SUS) or a metal layer with a hardness greater than copper, such as a titanium alloy; the second support segment 132 is made of stainless steel (SUS) or a metal layer with a hardness greater than copper, such as a titanium alloy, and the surface of the second support segment 132 has an indentation; the third support segment 133 is a metal layer made of copper foil, stainless steel (SUS) or a titanium alloy. That is, the first support segment 131 and the third support segment 133 can be made of the same material or different materials.

[0096] It should be noted that the surface of the second support segment 132 is at least one of an upper surface close to the display module 12 and a 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.

[0097] The surface of the second support segment 132 has an indentation, so that the hardness of the second support segment 132 is reduced compared with the hardness of the first support segment 131. Therefore, the stress of the second support segment 132 is reduced compared with the stress of the first support segment 131, which is conducive to the bending of the second support segment 132, thereby facilitating the fitting of the bending segment 13b and the arc segment 12b, improving Figure 4 The supporting layer 013 and the arc surface segment 12b in the embodiment are easy to fall off.

[0098] 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.

[0099] It should be noted that in the process of processing the indentation of the second support section 132 on the first support section 131: Since 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 the thickness of the support plate 13, or even the thickness of the first support section 131 is less than the thickness of the support plate 13, so the thickness of the first support section 131 is also very small. When processing the indentation on the surface of the first support section 131, when the pressure of processing the indentation is large, the other surface of the first support section 131 is likely to have a shape opposite to the indentation, that is, when the surface of the first support section 131 is concave, the other surface has a convex point protruding outward. When assembling such a support plate 13, the side of the support plate 13 with the indentation is fitted with the display module 12, and the surface opposite to the indentation is facing away from the display module 12. The convex point on the surface opposite to the indentation will not affect the fitting of the support plate 13 and the display module 12, and the convex point faces the inside of the accommodation space of the curved screen mobile phone 100, and does not affect the installation of the functional module.

[0100] 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 is beneficial for the third support segment 133 to bend, thereby facilitating the fitting of the bending segment 13b with the arc segment 12b, thereby improving Figure 4 The supporting layer 013 and the arc surface segment 12b in the embodiment are easy to fall off.

[0101] It should be noted that, since the second support segment 132 has an indentation on its surface, 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, whose hardness is less than that of the first support segment 131. In addition, according to 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, so that the hardness of the support plate 13 changes gradually, ensuring the support strength while ensuring the stability of the fit.

[0102] The above content describes the structure and materials of the support plate 13. Figure 8 The dimensional relationship of each part of the support plate 13 is described. Figure 8 It is a front view of the support plate 13.

[0103] like Figure 8 As shown, 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 relationship between the width L2 of the second support section 132 and the width L1 of the bending section 13b satisfies: L2 / L1=1 / 7-1 / 5.

[0104] 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 support plate 13 can refer to the size of the bending section 13b of the existing curved screen.

[0105] A set of example data is set as follows: when 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.

[0106] It should be noted that Figure 8 The direction of the line connecting the two bending sections 13b 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.

[0107] The above content describes the position and width of the second support section 132 of the support plate 13. Figures 9 to 12 The assembly method of the third support segment 133 is described. Figures 9 to 12 2 and 3 respectively show an assembly method of the third supporting segment 133 .

[0108] It should be noted that Figures 9 to 12 The second support segment 132 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.

[0109] The following content is described by taking the second support segment 132 as being processed on the first support segment 131, and the third support segment 133 being connected to the outer edge of the first support segment 131 as an example. If the second support segment 132 and the first support segment 131 are separate structures, the third support segment 133 is assembled to the outer edge of the second support segment 132, and the connection method can be referred to below.

[0110] in, Fig. 9 The third support segment 133 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. The third support segment 133 and the first support segment 131 are connected by the protrusion 1331 and the slot.

[0111] 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 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 the thickness of the protrusion 1331 is 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.

[0112] The second supporting segment 132 is located at the outer edge of the third supporting segment 133 , so there is a connection gap between the surface of the third supporting segment 133 and the surface of the second supporting segment 132 .

[0113] In some embodiments, the thickness H of the second supporting segment 132 includes but is not limited to D / 4.

[0114] exist Fig. 9 On the basis of the above, the slot of the first support segment 131 can be a dovetail slot, and the protrusion 1331 on the third support segment 133 is a dovetail protrusion that matches the dovetail slot. The dovetail protrusion and the dovetail slot are matched in a mortise and tenon connection, which can achieve the limitation of the width direction of the first support segment 131 and the third support segment 133, thereby improving the stability of the assembly of the first support segment 131 and the third support segment 133.

[0115] 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.

[0116] Fig.10 The third support segment 133 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 .

[0117] 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 above-mentioned step surface.

[0118] 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.

[0119] 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 .

[0120] 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, and all of them are within the protection range. The term "multiple" herein means no less than two.

[0121] Fig.11 The third support section 133 in the embodiment includes a first section 1332 and a second section 1333 along the width direction, and the first section 1332 is fitted with the second support section 132. The thickness of the second section 1333 is the same as the thickness D of the support plate 13, the thickness of the first section 1332 is less than the thickness of the second section 1333, and there is a gap between the first section 1332 and the second section 1333, so that an L-shaped groove is formed under the gap and the first section 1332.

[0122] The first support section 131 has a protrusion 1311 that is engaged with the L-shaped groove. The protrusion 1311 and the L-shaped groove can achieve the limitation of 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.

[0123] In some embodiments, the thickness of the first section 1332 is the same as the thickness H of the second supporting section 132 , which is 3D / 4, and the height D3 of the gap is D / 2.

[0124] It should be noted that when the first supporting section 131 and the third supporting section 133 are assembled, the protrusion 1311 is inserted into the L-shaped groove by plugging.

[0125] Fig.12 The third supporting section 133 is a U-shaped member and forms a receiving groove in the middle. The first supporting section 131 is assembled in the receiving groove along the width direction.

[0126] 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.

[0127] Several assembly methods of the third support segment 133 and the first support segment 131 are introduced above. These assembly methods are variations of the mortise and tenon process. In some embodiments, other mortise and tenon processes can also be used. In order to ensure that the third support segment 133 is fixedly connected to the first support segment 131, in some embodiments, the third support segment 133 assembled in the above embodiment is fixedly connected to the first support segment 131 by calendering.

[0128] The calendering process refers to the process of pressing a flat blank of a certain shape under the pressure of a punch through a die to form an open hollow part. The calendering process is a process that uses pressure and tensile ductility. Smelting can change the chemical composition of steel materials, but the calendering process will not change the chemical composition of steel. The principle of the calendering process can be referred to the forging (solid state forming) process, which can only forge steel and ultimately change the physical state of steel.

[0129] 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.

[0130] 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 in proportion to the change in the thickness D of the support plate 13 during the calendering process.

[0131] 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.

[0132] The calendering process is not described in detail here. The present 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.

[0133] The above describes in detail the assembly method, connection method and size relationship of the first support segment 131 and the third support segment 133. Figures 13 to 16 The shape of the indentation of the second support segment 132 is described. Figures 13 to 16 The shape of an indentation is provided respectively.

[0134] Fig.13 The indentation on the second supporting section 132 is a vertical groove, and the extending direction of the vertical groove is the length direction of the supporting plate 13.

[0135] Fig.14 The indentation on the second support segment 132 is a pit, and a convex point is formed on the surface of the second support segment 132. In some embodiments, the convex point includes but is not limited to a circular convex point.

[0136] 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 concave and convex 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.

[0137] Fig.15 The indentation on the second support segment 132 and Fig.16 The indentations on the second supporting section 132 are all irregular shapes.

[0138] In some embodiments, the indentation on the second supporting segment 132 includes but is not limited to being obtained by stamping.

[0139] It should be noted that the indentations on the surface of the second support segment 132 are multiple pits along the length direction of the support plate 13, so that when the second support segment 132 is bent, it can bend along the pits. Therefore, as long as the indentations are arranged along the length direction of the support plate 13, they are within the protection range and are not listed one by one in this article.

[0140] In some embodiments, when the bending segments 13 b are located at both ends of the width of the supporting segment 13 , the indentations are a plurality of pits along the width direction of the supporting plate 13 .

[0141] The above embodiment discloses a solution of stamping the surface of the second support segment 132 to obtain an indentation to reduce the hardness of the second support segment 132, thereby reducing the stress of the second support segment 132. In some embodiments, other methods can also be used to reduce the hardness of the second support segment 132. Fig.17 and Fig.18 The structure of the display screen disclosed in is described for other ways to reduce the hardness of the second supporting segment 132 .

[0142] Fig.17 The second support section 132 in Figure 7 The difference between the second support section 132 in is that Fig.17 The surface of the second support section 132 is processed with a groove. Other structures of the display screen 1 are similar to Figure 7 are the same as in , and will not be repeated here.

[0143] 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 , thereby achieving the purpose of reducing the stress of the second support segment 132 .

[0144] like Fig.18 As shown, 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, the groove can also be machined on the surface of the first support segment 131 by other machining methods to obtain the second support segment 132.

[0145] In some embodiments, the surface of the first support segment 131 may be at least one of an upper surface and a lower surface. The groove obtained by laser lasering extends along the length direction or the width direction of the support plate 13, and the width of the groove is the width L2 of the second support segment 132. The depth of the groove is along the thickness direction 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 embodiment.

[0146] When the bending sections b are located on both sides of the display screen 1 in the width direction, the grooves extend 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 grooves extend along the width direction of the support plate 13 .

[0147] Taking the thickness of the first support segment 131 as 0.03-0.1 mm as an example, the thickness of the groove obtained by laser processing can be 0.005-0.05 mm. In some proofing schemes, the optimal combination is that the thickness of the first support segment 131 is 0.03 mm, and the thickness of the groove obtained by laser processing is 0.08-0.1 mm. In some embodiments, the thickness of the first support segment 131 is the thickness of the support plate 13.

[0148] 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 Figure 4 The supporting layer 013 and the arc surface segment 12b in the embodiment are easy to fall off.

[0149] Combining the processing characteristics of laser, it can be known that the side of the obtained groove is an inclined surface. In some embodiments, the inclination angle ranges from 30° to 90°.

[0150] It should be noted that the inclined side of the groove obtained by laser processing can also release the extrusion stress when the second supporting section 132 is bent, which is conducive to further improving the falling-off problem.

[0151] Since 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 groove on the surface of the second support segment 132 cannot be subjected to rolling pressure, thereby affecting the attachment of the second support segment 132 to the display module 12. Based on this problem, Fig.19The illustrated embodiment discloses a method for bonding the support plate 13 and the display module 12 .

[0152] like Fig.19 As shown, the display screen 1 includes a display module 12 , a support plate 13 , a connection layer 14 and a protection layer 15 .

[0153] The structures of the display module 12, the support plate 13 and the connection layer 14 are shown in FIG. Fig.17 The structure of the display screen 1 is described above and will not be elaborated here.

[0154] The protection 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 supporting plate 13 .

[0155] In some embodiments, the protective layer 15 is a plastic film or a silicone film, which can protect the support plate 13 and prevent 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 with the groove.

[0156] The roller applies external force to the support plate 13 by rolling the protective layer 15, so that the support plate 13 is attached to the display module 12 through the connecting layer 14. Since the side of the protective layer 15 away from the support plate 13 is a plane, and under the action of the boss 151, the force of the roller can be transmitted to the second support segment 132, which is conducive to ensuring the attachment of the second support segment 132 to the display module 12.

[0157] After the support plate 13 and the display module 12 are attached to each other, the protective layer 15 can be torn off.

[0158] 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 scope.

[0159] It should be noted that the application Figure 7 and Fig.17 The electronic device with the display screen 1 disclosed in the embodiment also has all the technical effects brought by the display screen 1 .

[0160] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these 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 connected in a matching manner, 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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