Folding screen assembly and electronic equipment

Abstract

The invention provides a folding screen assembly and electronic equipment, the folding screen assembly comprises a transparent cover plate, a flexible screen and a decoration part, the transparent cover plate is provided with a main body area and an edge area connected to the side edge of the main body area; the flexible screen is arranged on one side of the transparent cover plate and located on the main body area; the decorating part comprises a bearing part and a decorating part extending from the edge of the bearing part; the bearing part is used for bearing the edge area; a gap is formed between the decoration part and the edge area; the surfaces, deviating from the flexible screen, of the main body area and the edge area are coplanar; in the light emitting direction of the flexible screen, the thickness of the main body area is smaller than that of the edge area. According to the folding screen assembly and the electronic equipment provided by the invention, a colloid layer and a protective layer on the transparent cover plate are canceled, so that the lamination dislocation amount on the flexible screen can be reduced, and the size of a frame, namely a black edge, of the display screen assembly and the electronic equipment can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electronic device structures, and specifically to a folding screen assembly and an electronic device. Background Art

[0002] Compared with traditional straight-screen phones, foldable screen phones have unique advantages such as the ability to switch between large and small screens at will and hover (fold to a certain angle) applications. However, current technical limitations also make it insufficient in some dimensions. For example, the wide border (i.e. black border) of the screen has a significant adverse effect on the appearance of the product. Summary of the invention

[0003] On the one hand, an embodiment of the present application provides a folding screen assembly, which includes a transparent cover plate, a flexible screen and a decorative member, wherein the transparent cover plate has a main body area and an edge area connected to the side of the main body area; the flexible screen is arranged on one side of the transparent cover plate and is located on the main body area; the decorative member includes a bearing portion and a decorative portion extending from the edge of the bearing portion; the bearing portion is used to bear the edge area, and a gap is provided between the decorative portion and the edge area; wherein the main body area and the edge area are coplanarly arranged with respect to the surface facing away from the flexible screen; in the light emitting direction of the flexible screen, the thickness of the main body area is less than the thickness of the edge area.

[0004] On the other hand, an embodiment of the present application further provides an electronic device, which includes a transparent cover, a flexible screen, a decorative member and a middle frame, wherein the transparent cover has a main body area and an edge area connected to the side of the main body area; the flexible screen is arranged on one side of the transparent cover and is located on the main body area; the decorative member includes a bearing portion and a decorative portion extending from the edge of the bearing portion; the bearing portion is used to bear the edge area, and there is a gap between the decorative portion and the edge area; the middle frame is configured to bear the decorative member and the flexible screen; wherein the main body area and the edge area are coplanarly arranged with respect to the surface facing away from the flexible screen; in the light emitting direction of the flexible screen, the thickness of the main body area is less than the thickness of the edge area.

[0005] On the other hand, an embodiment of the present application further provides an electronic device, which includes a transparent cover, a flexible screen, a decorative piece and a middle frame, wherein the transparent cover has a main body area and an edge area connected to the side of the main body area; the flexible screen is arranged on one side of the transparent cover and is located on the main body area; the decorative piece surrounds the periphery of the edge of the transparent cover, and there is a gap between the decorative piece and the edge area; the middle frame includes a middle plate and a frame extending from the edge of the middle plate; the middle plate is configured to carry the flexible screen, and the frame is configured to carry the decorative piece and the edge area; wherein the main body area and the edge area are coplanarly arranged with respect to the surface facing away from the flexible screen; in the light emitting direction of the flexible screen, the thickness of the main body area is less than the thickness of the edge area.

[0006] On the other hand, an embodiment of the present application further provides an electronic device, which includes a transparent cover, a flexible screen and a middle frame, wherein the transparent cover has a main body area and an edge area connected to the side of the main body area; the flexible screen is arranged on one side of the transparent cover and is located on the main body area; the middle frame includes a middle plate and a frame extending from the edge of the middle plate; the middle plate is configured to support the flexible screen; the frame includes a supporting portion and a decorative portion extending from the edge of the supporting portion; the supporting portion is used to support the edge area, the decorative portion surrounds the periphery of the edge of the transparent cover, and there is a gap between the decorative portion and the edge area; wherein the main body area and the edge area are coplanarly arranged with respect to the surface facing away from the flexible screen; in the light emitting direction of the flexible screen, the thickness of the main body area is less than the thickness of the edge area.

[0007] The folding screen assembly and the electronic device provided by the embodiment of the present application can not only reduce the overall thickness of the folding screen assembly and the electronic device by eliminating the colloid layer and the protective layer on the transparent cover plate, but also reduce the stacking displacement on the flexible screen to reduce the frame, i.e., the size of the black border, of the display screen assembly and the electronic device. At the same time, by thickening the edge area of ​​the transparent cover plate, the edge strength of the transparent cover plate can be ensured, compensating for the defect of poor edge strength caused by eliminating the colloid layer and the protective layer on the transparent cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 is a schematic diagram of the structure of an electronic device in some embodiments of the present application;

[0010] Figure 2 yes Figure 1 A schematic diagram of the structural disassembly of the electronic device in the embodiment;

[0011] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure of region A in the electronic device in the embodiment;

[0012] Figure 4 is a schematic diagram of a partial cross-sectional structure of an electronic device in some other embodiments of the present application;

[0013] Figure 5 yes Figure 4 A schematic structural diagram of a transparent cover plate in an embodiment;

[0014] Figure 6 is a schematic diagram of the structure of a transparent cover plate in other embodiments of the present application;

[0015] Figure 7 is a schematic diagram of a partial cross-sectional structure of an electronic device in some other embodiments of the present application;

[0016] Figure 8 is a schematic diagram of a partial cross-sectional structure of an electronic device in some other embodiments of the present application;

[0017] Fig. 9 is a schematic diagram of a partial cross-sectional structure of an electronic device in some other embodiments of the present application;

[0018] Fig.10 It is a schematic diagram of the structural composition of mobile terminal devices in other embodiments of the present application. DETAILED DESCRIPTION

[0019] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] As used herein, "electronic devices" (or simply "terminals") include, but are not limited to, devices configured to receive / send communication signals via a wireline connection (e.g., via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). Communication terminals configured to communicate via a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, organizers, calendars, and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0022] It should be noted that the electronic devices in the embodiments of the present application are mainly electronic devices with folding screens, such as folding screen mobile phones. Specifically, folding screen mobile phones have gradually become the development trend of future complete machines. The main advantage they bring is that they combine entertainment and office work, and are easy to carry, which caters to the current consumer demand for portability and diverse functions. Among them, folding screen mobile phones generally have folding methods such as inward folding and outward folding. For folding screen mobile phones with inward folding, after folding, the display surfaces of the flexible screen are close to each other along the folding area, that is, the flexible screen is in a folding form that folds inward. For folding screen mobile phones with outward folding, after folding, the display surfaces of the flexible screen are away from each other along the folding area, that is, the flexible screen is in a folding form that folds outward.

[0023] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of an electronic device 100 in some embodiments of the present application, Figure 2 yes Figure 1A schematic diagram of the structural disassembly of the electronic device 100 in the embodiment, the electronic device 100 may include a flexible screen 10, a decorative part 20 and a middle frame 30. Among them, the electronic device 100 in the embodiment of the present application may be a portable device such as a mobile phone, a laptop computer, a tablet computer, a wearable device, etc. This application takes the electronic device 100 as an example of a mobile phone for exemplary description. It should be noted that all directional indications in the embodiment of the present application (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. Among them, Figure 1 The direction indicated by the arrow X can be simply regarded as the long axis direction of the electronic device. Figure 1 The direction indicated by the arrow Y can be simply regarded as the short axis direction of the electronic device. Figure 1 The direction indicated by the middle arrow Z can be simply regarded as the thickness direction of the electronic device. Generally, the size of the electronic device in the long axis direction is greater than the size in the short axis direction.

[0024] Furthermore, the flexible screen 10 is configured to be able to be folded around the folding line 101 driven by the middle frame 30. Among them, a rotating shaft structure or a hinge structure or the like may be provided in the middle frame 30 so that the middle frame 30 can be folded in the above-mentioned long axis direction, that is, the electronic device 100 is configured to be able to be folded in the above-mentioned long axis direction. For example, the middle frame 30 may be divided into two frames located on both sides of the folding line 101, and the two frames may be respectively connected to structures such as a rotating shaft structure or a hinge structure, and may be folded along the folding line 101 by means of structures such as a rotating shaft structure or a hinge structure. The flexible screen 10 may be connected to the middle frame 30 by one or a combination of assembly methods such as snap-on, gluing, welding, etc., so that the flexible screen 10 and the middle frame 30 may be folded together along the folding line 101.

[0025] It is understandable that in order to avoid creases on the flexible screen 10, when the flexible screen 10 is folded, the area of ​​the flexible screen 10 corresponding to the folding line 101 is generally folded into a bent shape. Based on the folding line 101 of the flexible screen 10, the flexible screen 10 has a folding area 102 and a non-folding area 103, and the folding area 102 can be in a bent shape when the flexible screen 10 is folded, and the non-folding area 103 generally maintains a flat shape.

[0026] Among them, the folding area 102 and the non-folding area 103 constitute an integrated flexible screen 10, and are used to display pictures. Among them, the folding area 102 can be symmetrically structured relative to the folding line 101, that is, the size, shape and other parameters of the folding area 102 on both sides of the folding line 101 can be the same or similar. The non-folding area 103 is connected to the side of the folding area 102, that is, the non-folding area 103 is connected to the edge of the folding area 102 that is opposite to the folding line 101 in the above-mentioned long axis direction. Optionally, the non-folding area 103 can be symmetrically structured relative to the folding area 102, that is, the size, shape and other parameters of the two parts of the non-folding area 103 that are oppositely arranged in the above-mentioned long axis direction and located on both sides of the folding area 102 can be the same or similar.

[0027] Combined with reference Figure 3 , Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure of region A in the electronic device 100 in the embodiment, wherein the plane where the cross section is located may be parallel to the XZ plane. The electronic device 100 may further include a transparent cover plate 40 .

[0028] The transparent cover plate 40 is covered on the display surface of the flexible screen 10 and can be folded synchronously with the flexible screen 10 .

[0029] like Figure 3 As shown, the middle frame 30 may include a middle plate 31 and a frame 32 extending from the edge of the middle plate 31. The middle plate 31 may be configured to carry the flexible screen 10, the frame 32 may be configured to carry the decorative element 20, and the decorative element 20 may be configured to carry the transparent cover plate 40.

[0030] Specifically, the transparent cover plate 40 can be arranged to protrude from the flexible screen 10 in the plane direction where XY is located, that is, in the plane direction where XY is located, the transparent cover plate 40 has an edge protruding from the flexible screen 10, and the edge is supported by the above-mentioned decorative piece 20 so that the decorative piece 20 can support the transparent cover plate 40.

[0031] Furthermore, the decorative element 20 has a portion surrounding the periphery of the edge of the transparent cover plate 40. It can be understood that the decorative element 20 surrounds at least a portion of the periphery of the edge of the transparent cover plate 40, which can protect the edge of the transparent cover plate 40 and prevent the edge of the transparent cover plate 40 from being worn, warped, and damaged by falling.

[0032] Optionally, the decorative member 20 may include a bearing portion 21 and a decorative portion 22 extending from the edge of the bearing portion 21, wherein the bearing portion 21 is configured to bear the transparent cover plate 40 and protrude from the edge of the flexible screen 10. The decorative portion 22 surrounds the periphery of the edge of the transparent cover plate 40. The bearing portion 21 and the decorative portion 22 may be divided into two parts, which are located on both sides of the folding area 102 of the flexible screen 10 in the long axis direction, that is, the decorative member 20 is disconnected at a position corresponding to the folding area 102 for easy folding. Of course, in other embodiments, the decorative member 20 may be an integral structure and may be folded at a position corresponding to the folding area 102.

[0033] The edge of the transparent cover plate 40 protruding from the flexible screen 10 can be connected to the bearing portion 21 of the decorative member 20 by one or a combination of assembly methods such as clamping, gluing, welding, etc. A gap is provided between the decorative portion 22 of the decorative member 20 and the edge of the transparent cover plate 40 protruding from the flexible screen 10 to match the assembly tolerance.

[0034] Further, the middle frame 30 is configured to carry the decorative element 20 and the flexible screen 10, that is, the middle frame 30 can be connected to the decorative element 20 and the flexible screen 10 by one or a combination of assembly methods such as clamping, gluing, welding, etc. Optionally, the frame 32 of the middle frame 30 can be connected to the decorative element 20 by one or a combination of assembly methods such as clamping, gluing, welding, etc.; the middle plate 31 of the middle frame 30 can be connected to the flexible screen 10 by one or a combination of assembly methods such as clamping, gluing, welding, etc.

[0035] See again Figure 3 The electronic device 100 may further include a colloid layer 50 and a protective layer 60 disposed on the side of the transparent cover plate 40 away from the flexible screen 10, and the protective layer 60 is bonded to the surface of the transparent cover plate 40 away from the flexible screen 10 through the colloid layer 50. Among them, the protective layer 60 can be fully attached to the surface of the transparent cover plate 40 away from the flexible screen 10 to protect the transparent cover plate 40. The protective layer 60 can be polyethylene glycol terephthalate (PET), polyimide (PI), polyurethane (PU), thermoplastic polyurethane (TPU) or transparent polyimide (Colorless Polyimide, CPI), etc. attached to the transparent cover plate 40. The colloid layer 50 may be a colloid such as OCA (Optically Clear Adhesive), PSA (Pressure Sensitive Adhesive), or epoxy resin adhesive for bonding the protective layer 60 and the transparent cover plate 40 .

[0036] In order to enable the protective layer 60 to protect the entire surface of the transparent cover plate 40, taking into account the influence of the fitting tolerance and cutting tolerance between the protective layer 60 and the transparent cover plate 40, the coverage area of ​​the protective layer 60 is generally set to be larger than the coverage area of ​​the transparent cover plate 40, that is, the transparent cover plate 40 is retracted into the protective layer 60. In other words, one end of the protective layer 60 close to the decorative portion 22 protrudes from one end of the transparent cover plate 40 close to the decorative portion 22.

[0037] In summary, the frame of the electronic device 100, i.e., the black border, is mainly composed of Figure 3 The dimensions A to D shown in FIG.

[0038] The A dimension may be the distance between the edge of the display area of ​​the flexible screen 10 and the outer edge of the transparent cover 40. This dimension is related to the dimension of the flexible screen 10 itself, that is, the A dimension is not within the scope of improvement of the embodiment of the present application, so it can be understood as a fixed value.

[0039] The dimension B may be the dimension of the protective layer 60 protruding from the transparent cover plate 40 , which is related to the fitting tolerance and processing tolerance between the protective layer 60 and the transparent cover plate 40 , that is, the dimension B is not within the scope of improvement of the embodiment of the present application, and thus may be understood as a fixed value.

[0040] The dimension C may be the gap dimension between the protective layer 60 and the decorative part 22, which is related to the assembly tolerance of the protective layer 60 and the decorative part 20, and the stacking displacement of the protective layer 60 and the transparent cover plate 40 when folded. Specifically, the transparent cover plate 40, the colloid layer 50, and the protective layer 60 are sequentially stacked on the display surface of the flexible screen 10. When the flexible screen 10 is folded, the transparent cover plate 40, the colloid layer 50, and the protective layer 60 are folded synchronously, so that the stacking of the transparent cover plate 40, the colloid layer 50, and the protective layer 60 is easily displaced, and the displacement range may generally be 0.1-0.5 mm.

[0041] The dimension D may be the width dimension of the decorative portion 22 of the decorative piece 20. This dimension is not within the scope of improvement of the embodiment of the present application, so it can be understood as a fixed value. The material of the decorative piece 20 may be polycarbonate, glass fiber, aluminum alloy, magnesium alloy, etc., and may be flexibly selected according to different strength requirements. Of course, when the material strength of the decorative piece 20 is selected to be higher, the width of the decorative portion 22 may be relatively narrow.

[0042] Based on this, the size of the border, i.e., the black border, of the electronic device 100 in the embodiment of the present application is basically limited by the sum of the sizes A to D. Among them, the sizes A and D are not within the scope of improvement of the embodiment of the present application, so they can be understood as fixed values. The present application will improve B and C below to reduce the size of the border, i.e., the black border, of the electronic device.

[0043] See also Figure 4 , Figure 4 2 is a schematic diagram of a partial cross-sectional structure of an electronic device 200 in some other embodiments of the present application, and the electronic device 200 may include a flexible screen 10, a decorative part 20, a middle frame 30, and a transparent cover plate 70. The difference between the electronic device 200 in the embodiment of the present application and the electronic device 100 in the aforementioned embodiment is that the protective layer 60 and the colloid layer 50 on the transparent cover plate 40 are eliminated, and the structure of the transparent cover plate 70 is different from that of the transparent cover plate 40, so that the frame of the electronic device 200 is narrower than that of the electronic device 100.

[0044] Among them, the flexible screen 10, the decorative component 20 and the transparent cover plate 70 can constitute a folding screen assembly of the electronic device 200, so that they can be folded synchronously with the middle frame 30 under the drive of the middle frame 30.

[0045] Optionally, the flexible screen 10 has a folding area 102 and a non-folding area 103 of an integrated structure, and the non-folding area 103 is connected to the side of the folding area. For details, please refer to the aforementioned embodiment.

[0046] Optionally, the middle frame 30 may include a middle plate 31 and a frame 32 extending from an edge of the middle plate 31. The middle plate 31 may be configured to carry the non-folding area 103 of the flexible screen 10, the frame 32 may be configured to carry the decorative element 20, and the decorative element 20 may be configured to carry the transparent cover 70.

[0047] The transparent cover plate 70 is arranged on the display surface of the flexible screen 10. The transparent cover plate 70 may have a main body area 710 and an edge area 720 connected to the side of the main body area 710. Among them, the main body area 710 and the edge area 720 are coplanarly arranged on the surface away from the flexible screen 10. In the light emitting direction of the flexible screen 10, the thickness of the main body area 710 is less than the thickness of the edge area 720. It should be noted that when the electronic device is in use or impacted, the edge of the transparent cover plate 720 is relatively easy to be damaged. Therefore, in this embodiment, the edge area 720 of the transparent cover plate 70 is thickened, thereby eliminating the protective layer 60 and the colloidal layer 50 in the aforementioned embodiment, which can not only achieve the overall thinning of the electronic device, but also reduce the stacking displacement range on the flexible screen 10.

[0048] The flexible screen 10 is disposed on one side of the transparent cover plate 70 and is located on the main body area 710. The flexible screen 10 can be bonded and connected to the main body area 710 by a colloid such as OCA, PSA or epoxy resin glue.

[0049] Optionally, the decorative member 20 may include a bearing portion 21 and a decorative portion 22 extending from the edge of the bearing portion 21. The bearing portion 21 is configured to bear the edge area 720 of the transparent cover plate 70, that is, the edge area 720 of the transparent cover plate 70 can be bonded to the bearing portion 21 by a colloid such as OCA, PSA, double-sided tape or epoxy resin adhesive. The decorative portion 22 surrounds the periphery of the edge of the transparent cover plate 70, that is, there is a gap between the decorative portion 22 and the edge area 720. Among them, the gap between the decorative portion 22 and the edge area 720 is related to the assembly tolerance of the transparent cover plate 70 and the decorative member 20, and the displacement of the transparent cover plate 70 when the flexible screen 10 is folded. That is, when the transparent cover plate 70 and the flexible screen 10 are folded synchronously, the displacement value of the edge area 720 of the transparent cover plate 70 relative to the bearing portion 21 constitutes a part of the gap between the decorative portion 22 and the edge area 720.

[0050] In summary, the frame of the electronic device 200, i.e., the black border, is mainly composed of Figure 4 The dimensions a, c, and d shown in FIG.

[0051] The dimension a can be the distance between the edge of the display area of ​​the flexible screen 10 and the outer edge of the transparent cover 40. This dimension is related to the dimension of the flexible screen 10 itself, that is, the dimension a is not within the scope of improvement of the embodiment of the present application, so it can be understood as a fixed value. The dimension a can refer to the dimension A of the aforementioned embodiment.

[0052] The c dimension may be the gap dimension between the transparent cover plate 70 and the decorative part 22, which is related to the assembly tolerance of the transparent cover plate 70 and the decorative part 20, and the displacement of the transparent cover plate 70 when the flexible screen 10 is folded. Specifically, the main area 710 of the transparent cover plate 70 is connected to the flexible screen 10, and the edge area 720 of the transparent cover plate 70 is connected to the bearing part 21. When the flexible screen 10 is folded, the edge area 720 of the transparent cover plate 70 can be displaced relative to the bearing part 21, and the displacement amount generally does not exceed 0.1 mm, for example, it can be 0.05 mm, etc.

[0053] Understandably, in Figure 3 In the embodiment, when the flexible screen 10 is folded, the displacement between the transparent cover plate 40, the colloid layer 50 and the protective layer 60 thereon makes the overall displacement larger (i.e., 0.1-0.5 mm), and Figure 4 In the embodiment, since the colloid layer 50 and the protective layer 60 are eliminated, when the flexible screen 10 is folded, the above-mentioned displacement is only the displacement of the transparent cover plate 70 relative to the bearing portion 21 (i.e., not more than 0.1 mm, for example, only 0.05 mm, etc.), thereby making Figure 4 The c dimension in the embodiment is much smaller than Figure 3 The C size in the embodiment can reduce the frame, ie, the black border, of the electronic device 200.

[0054] The dimension d may be the width dimension of the decorative portion 22 of the decorative element 20, which is not within the scope of improvement of the embodiment of the present application and can be understood as a fixed value. The dimension d may refer to the dimension D in the above embodiment.

[0055] Based on this, the size of the frame, i.e., the black border, of the electronic device 200 in this embodiment is basically limited by the sum of the sizes a, c, and d. Figure 3 The border of the electronic device 100 in the embodiment is a black border. Figure 4 The electronic device 200 in the embodiment not only eliminates the B dimension, but also makes the C dimension much smaller than Figure 3 The C dimension in the embodiment can be greatly reduced Figure 4 The border of the electronic device 200 in the embodiment is the size of the black border.

[0056] also, Figure 4 In the embodiment, by removing the colloid layer and the protective layer on the transparent cover plate, not only the overall thickness of the display screen assembly and the electronic device can be reduced, but also the stacking displacement on the flexible screen can be reduced to reduce the frame, i.e., the black border size, of the display screen assembly and the electronic device. At the same time, by thickening the edge area of ​​the transparent cover plate, the edge strength of the transparent cover plate can be ensured, compensating for the defect of poor edge strength caused by removing the colloid layer and the protective layer on the transparent cover plate.

[0057] See also Figure 5 , Figure 5 yes Figure 4 A schematic structural diagram of the transparent cover plate 70 in the embodiment.

[0058] The transparent cover plate 70 may have a main body area 710 and an edge area 720 connected to the side of the main body area 710. The main body area 710 and the edge area 720 are coplanarly arranged on the surface away from the flexible screen 10. In the light emitting direction of the flexible screen 10, the thickness of the main body area 710 is less than the thickness of the edge area 720. Further, the main body area 710 may include a bending area 711 and a transition area 712 connected to the side of the bending area 711. The edge area 720 is connected to the side of the transition area 712 away from the bending area 711. The thickness of the bending area 711 is less than the thickness of the edge area 720, and the thickness of the transition area 712 is less than the thickness of the edge area 720 and greater than the thickness of the bending area 711.

[0059] As mentioned above, the flexible screen 10 has a folding area 102 and a non-folding area 103. The folding area 102 can be bent when the flexible screen 10 is folded, and the non-folding area 103 generally maintains a flat shape. The non-folding area 103 is connected to the side of the folding area 102, that is, the non-folding area 103 is connected to the edge of the folding area 102 opposite to the folding line 101 in the above-mentioned long axis direction.

[0060] Furthermore, the bending zone 711 is stacked with the folding zone 102, and the transition zone 712 is stacked with the non-folding zone 103. The edge zone 720 is connected to the end of the transition zone 712 away from the bending zone 711, so that the transparent cover plate 70 can completely cover the display surface of the flexible screen 10, so as to protect the flexible screen 10 and improve the overall impact resistance of the folding screen assembly. In addition, the thickness of the bending zone 711 is less than the thickness of the transition zone 712, so that the thickness of the transparent cover plate 70 in the bending zone 711 is reduced to meet the bending performance of the transparent cover plate 70; and the thickness of the transparent cover plate 70 in the transition zone 712 is guaranteed, so that it can maintain a certain impact resistance; the thickness of the edge zone 720 is greater than the thickness of the transition zone 712, which further improves the impact resistance of the edge of the transparent cover plate 70, so as to focus on protecting the easily damaged edge area of ​​the transparent cover plate 70.

[0061] In addition, the thickness of the edge area 720 is greater than the thickness of the transition area 712, that is, the edge of the transparent cover plate 70 is thickened, which can meet the processing requirements of grinding and polishing the edge of the transparent cover plate 70 (such as rounding or chamfering C-angle, etc.).

[0062] In one embodiment, the thickness of the bending area 711 may be 0.02-0.1 mm, for example, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, or 0.09 mm, etc. The thickness of the transition area 712 may be 0.05-0.15 mm, for example, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, or 0.14 mm, etc. The thickness of the edge area 720 may be 0.15-0.5 mm, for example, 0.20 mm, 0.25 mm, 0.30 mm, 0.35 mm, 0.40 mm, or 0.45 mm, etc.

[0063] See again Figure 5, there is a smooth transition between the bending zone 711 and the transition zone 712, so that the transparent cover plate 70 forms a groove structure with an opening toward the folding area 102 of the flexible screen 10, and the inner wall of the groove has a conical profile. Optionally, there may be a first connection portion 701 between the bending zone 711 and the transition zone 712, and the thickness of the first connection portion 701 gradually increases or increases linearly from the end of the first connection portion 701 connecting the bending zone 711 toward the direction away from the bending zone 711. Further, the thickness of the end of the first connection portion 701 connecting the bending zone 711 is substantially consistent with that of the bending zone 711, the thickness of the end of the first connection portion 701 connecting the transition zone 712 is substantially consistent with that of the transition zone 712, and the thickness of the portion between the end of the first connection portion 701 connecting the bending zone 711 and the end of the first connection portion 701 connecting the transition zone 712 gradually decreases in the direction toward the bending zone 711.

[0064] There is a smooth transition between the edge area 720 and the transition area 712, so that the transparent cover plate 70 forms a groove structure with an opening toward the flexible screen 10, and the inner wall of the groove has a conical profile. Optionally, there may be a second connection portion 702 between the edge area 720 and the transition area 712, and the thickness of the second connection portion 702 gradually decreases or decreases linearly from the end of the second connection portion 702 connecting the edge area 720 toward the direction away from the edge area 720. Further, the thickness of the end of the second connection portion 702 connecting the edge area 720 is substantially consistent with that of the edge area 720, the thickness of the end of the second connection portion 702 connecting the transition area 712 is substantially consistent with that of the transition area 712, and the thickness of the portion between the end of the second connection portion 702 connecting the edge area 720 and the end of the second connection portion 702 connecting the transition area 712 gradually increases in the direction toward the edge area 720. It should be noted that the terms "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as “first”, “second”, etc. may explicitly or implicitly include at least one of the features.

[0065] In other words, the main area 710 and the edge area 720 cooperate to form a first groove 70a with an opening toward the flexible screen 10, and the bending area 711 and the transition area 712 cooperate to form a second groove 70b with an opening toward the folding area 102 of the flexible screen 10. The inner wall of the first groove 70a has a conical profile, and the inner wall of the second groove 70b has a conical profile. Furthermore, the opening of the second groove 70b is connected to the bottom wall of the first groove 70a.

[0066] See also Figure 6 , Figure 6 It is a schematic diagram of the structure of the transparent cover plate 70 in other embodiments of the present application.

[0067] The folding screen assembly may also include a coating layer 730 disposed on the surface of the transparent cover plate 70 close to the flexible screen 10, and the coating layer 730 is coated on at least the main area 710 of the transparent cover plate 70. Among them, the modulus of the coating layer 730 is less than the modulus of the transparent cover plate 70, so that the coating layer 730 is easier to bend relative to the transparent cover plate 70. The thickness of the bending area 711 of the transparent cover plate 70 is thinner, and the impact resistance of the transparent cover plate 70 in the bending area 711 will be reduced. The coating layer 730 is provided to be coated on the bending area 711, which can ensure the bending performance of the transparent cover plate 70, and improve the surface strength and impact resistance of the transparent cover plate 70. Similarly, the thickness of the transition area 712 of the transparent cover plate 70 is thinner, and the impact resistance of the transparent cover plate 70 in the transition area 712 will be reduced. The coating layer 730 is provided to be coated on the transition area 712, which can ensure the bending performance of the transparent cover plate 70, and improve the surface strength and impact resistance of the transparent cover plate 70. In addition, the coating layer 730 may further extend from the transition area 712 to the edge area 720 to further enhance the surface strength and impact resistance of the transparent cover plate 70 .

[0068] The coating layer 730 is made of organic material, such as acrylate, TPU or other organic materials.

[0069] See also Figure 7 , Figure 7 2 is a schematic diagram of a partial cross-sectional structure of an electronic device 200 in some other embodiments of the present application. The electronic device 200 may further include a protective film 80 disposed on the surface of the transparent cover plate 70 away from the flexible screen 10, and the protective film 80 may be bonded to the surface of the transparent cover plate 70 away from the flexible screen 10 by a colloid.

[0070] The protective film 80 is disposed on the surface of the transparent cover plate 70 facing away from the display screen 110, and is configured to protect the transparent cover plate 70 to prevent the middle area of ​​the transparent cover plate 70 from being damaged when impacted. Further, the protective film 80 can be attached to the middle area of ​​the transparent cover plate 70, that is, the outer periphery of the protective film 80 does not protrude from the edge of the transparent cover plate 70, so as to prevent the frame of the electronic device 200, i.e., the black border, from being increased due to the folding misalignment between the protective film 80 and the transparent cover plate 70 during the folding process.

[0071] In other words, the coverage area of ​​the protective film 80 can be smaller than the coverage area of ​​the transparent cover plate 70, and the protective film 80 covers the display area of ​​the flexible screen 10. On the one hand, it can protect the overlapping area between the transparent cover plate 70 and the display area of ​​the flexible screen 10, and on the other hand, it can prevent the protective film 80 from protruding from the edge of the transparent cover plate 70.

[0072] The material of the protective film 80 may be a light-transmitting material such as polyethylene glycolterephthalate (PET), polyimide (PI), polyurethane (PU), thermoplastic polyurethane (TPU) or colorless polyimide (CPI).

[0073] It is understandable that the protective film 80 is a film that can be replaced during the use of the electronic device 200 by the consumer. Taking a mobile phone as an example, the protective film 80 is a film layer such as a tempered film that can be freely replaced by the consumer.

[0074] See also Figure 8 , Figure 8 It is a schematic diagram of the partial cross-sectional structure of the electronic device 300 in some other embodiments of the present application. The difference from the aforementioned embodiment is that the decorative member 20 cancels the bearing portion 21 and only includes the decorative portion 22. Specifically, the decorative member 20 surrounds the periphery of the edge of the transparent cover 70, and there is a gap between the decorative member 20 and the transparent cover 70. The middle frame 30 may include a middle plate 31 and a frame 32 extending from the edge of the middle plate 31, the middle plate 31 is configured to carry the flexible screen 10, and the frame 32 is configured to carry the decorative member 20 and the edge area 720 of the transparent cover 70. That is, the edge area 720 on which the decorative member 20 is carried on the frame 32 is away from the side of the flexible screen 10, and is spaced apart from the edge area 720. The decorative member 20 can be fixedly connected to the frame 32 by means of snap connection, bonding, welding or screw connection.

[0075] It can be understood that the decorative member 20 in this embodiment eliminates the bearing portion to simplify the structure of the decorative member 20. At the same time, the portion of the frame 32 between the middle plate 31 and the decorative member 20 is used as the bearing portion of the edge area 720. It should be noted that the technical features not fully described in this embodiment can refer to the specific description in the previous embodiment, so they will not be repeated here.

[0076] See also Fig. 9 , Fig. 9 4 is a schematic diagram of a partial cross-sectional structure of an electronic device 400 in some other embodiments of the present application, wherein the difference from the above embodiments is that the decorative element 20 is eliminated.

[0077] Specifically, the middle frame 30 may include a middle plate 31 and a frame 32 extending from the edge of the middle plate 31, and the middle plate 31 is configured to carry the flexible screen 10. The frame 32 may include a bearing portion and a decorative portion extending from the edge of the bearing portion. The bearing portion is configured to carry the edge area 720 of the transparent cover 70. The decorative portion surrounds the periphery of the edge of the transparent cover 70, and there is a gap between the decorative portion and the edge area 720. That is, the bearing portion of the frame 32 is configured to carry the edge area 720 of the transparent cover 70.

[0078] It can be understood that the present embodiment integrates the decorative parts on the middle frame to form an integrated structure, which can simplify the assembly process of the electronic device and thus improve the assembly efficiency. That is, the decorative part on the frame in the present embodiment can refer to the decorative part of the decorative part in the previous embodiment, and the bearing part on the frame can refer to the bearing part of the decorative part in the previous embodiment. It should be noted that the technical features not fully described in the present embodiment can refer to the specific description in the previous embodiment, so they will not be repeated here.

[0079] The folding screen assembly and the electronic device provided by the embodiment of the present application can not only reduce the overall thickness of the display screen assembly and the electronic device by eliminating the colloid layer and the protective layer on the transparent cover plate, but also reduce the stacking displacement on the flexible screen to reduce the frame, i.e., the size of the black border, of the display screen assembly and the electronic device. At the same time, by thickening the edge area of ​​the transparent cover plate, the edge strength of the transparent cover plate can be ensured, compensating for the defect of poor edge strength caused by eliminating the colloid layer and the protective layer on the transparent cover plate.

[0080] In addition, the present application also provides a mobile terminal device, see Fig.10 , Fig.10 It is a schematic diagram of the structure of the mobile terminal device 900 in other embodiments of the present application. The mobile terminal device 900 may be a mobile phone, a tablet computer, a laptop computer, a wearable device, etc. The embodiment of the present application is illustrated with a mobile phone as an example. The structure of the mobile terminal device 900 may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (i.e., the flexible screen 10 in the above embodiment), a sensor 950, an audio circuit 960, a wifi module 970, a processor 980, and a power supply 990. Among them, the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected to the processor 980; the power supply 990 is used to provide power to the entire mobile terminal device 900.

[0081] Specifically, the RF circuit 910 is used to receive and send signals; the memory 920 is used to store data instruction information; the input unit 930 is used to input information, which may specifically include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941 (i.e., the flexible screen 10 in the above embodiment); the sensor 950 includes an infrared sensor, a laser sensor, a pressure sensor and a position sensor in the above embodiment, etc., for detecting user approach signals, distance signals, pressure signals and position signals; the speaker 961 and the microphone (or microphone) 962 are connected to the processor 980 through the audio circuit 960 for receiving and sending sound signals; the wifi module 970 is used to receive and transmit wifi signals, and the processor 980 is used to process data information of the mobile terminal device. It can be understood that the technical features not fully described in this embodiment can refer to the specific description in the above embodiment, so this embodiment will not be repeated.

[0082] It should be noted that the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0083] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A folding screen assembly, characterized in that: The folding screen assembly comprises: A transparent cover plate, comprising a main body area and an edge area connected to the side edge of the main body area; A flexible screen is provided on one side of the transparent cover plate and is located on the main body area; and The decorative piece comprises a bearing portion and a decorative portion extending from an edge of the bearing portion; the bearing portion is used to bear the edge area, and there is a gap between the decorative portion and the edge area; The main area and the edge area are coplanarly arranged on a surface facing away from the flexible screen; in the light emitting direction of the flexible screen, the thickness of the main area is smaller than the thickness of the edge area.

2. The folding screen assembly according to claim 1, characterized in that: The bearing portion is connected to the edge area by colloid bonding; wherein, when the transparent cover plate and the flexible screen are folded synchronously, the displacement of the edge area relative to the bearing portion does not exceed 0.1 mm.

3. The folding screen assembly according to claim 1, characterized in that: The main area includes a bending area and a transition area connected to the side of the bending area, and the edge area is connected to the side of the transition area away from the bending area; wherein the thickness of the bending area is smaller than the thickness of the edge area, and the thickness of the transition area is smaller than the thickness of the edge area and greater than the thickness of the bending area.

4. The folding screen assembly according to claim 3, characterized in that: The flexible screen comprises a folding area stacked with the bending area, and a non-folding area stacked with the transition area; wherein the non-folding area is connected to a side of the folding area.

5. The folding screen assembly according to claim 3, characterized in that: The thickness of the bending zone is 0.02-0.1 mm; the thickness of the transition zone is 0.05-0.15 mm; and the thickness of the edge zone is 0.15-0.5 mm.

6. The folding screen assembly according to claim 1, characterized in that: The folding screen assembly also includes a coating layer disposed on a surface of the transparent cover plate close to the flexible screen, wherein the coating layer is coated at least on a main body area of ​​the transparent cover plate; wherein a modulus of the coating layer is smaller than a modulus of the transparent cover plate.

7. An electronic device, characterized in that: The electronic device comprises: A transparent cover plate, comprising a main body area and an edge area connected to the side of the main body area; A flexible screen is provided on one side of the transparent cover plate and located on the main body area; A decorative piece, comprising a bearing portion and a decorative portion extending from an edge of the bearing portion; the bearing portion is used to bear the edge area, and a gap is provided between the decorative portion and the edge area; and A middle frame, wherein the middle frame is configured to carry the decorative element and the flexible screen; The main area and the edge area are coplanarly arranged on a surface facing away from the flexible screen; in the light emitting direction of the flexible screen, the thickness of the main area is smaller than the thickness of the edge area.

8. The electronic device according to claim 7, characterized in that: The middle frame includes a middle plate and a frame extending from an edge of the middle plate, the middle plate is configured to carry the flexible screen, and the frame is configured to carry the decorative element.

9. An electronic device, characterized in that: The electronic device comprises: A transparent cover plate, comprising a main body area and an edge area connected to the side of the main body area; A flexible screen is provided on one side of the transparent cover plate and located on the main body area; A decorative piece, the decorative piece surrounds the periphery of the edge of the transparent cover plate, and a gap is formed between the decorative piece and the edge area; and A middle frame, comprising a middle plate and a frame extending from an edge of the middle plate; the middle plate is configured to carry the flexible screen, and the frame is configured to carry the decorative element and the edge area; The main area and the edge area are coplanarly arranged on a surface facing away from the flexible screen; in the light emitting direction of the flexible screen, the thickness of the main area is smaller than the thickness of the edge area.

10. An electronic device, characterized in that: The electronic device comprises: A transparent cover plate, comprising a main body area and an edge area connected to the side of the main body area; A flexible screen is provided on one side of the transparent cover plate and is located on the main body area; and A middle frame, comprising a middle plate and a frame extending from the edge of the middle plate; the middle plate is configured to carry the flexible screen; the frame comprises a carrying portion and a decorative portion extending from the edge of the carrying portion; the carrying portion is used to carry the edge area, the decorative portion surrounds the periphery of the edge of the transparent cover plate, and there is a gap between the decorative portion and the edge area; The main area and the edge area are coplanarly arranged on a surface facing away from the flexible screen; in the light emitting direction of the flexible screen, the thickness of the main area is smaller than the thickness of the edge area.

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