Supporting assembly for folding screen module, folding screen module and electronic equipment

Abstract

The utility model provides a supporting assembly for a folding screen module, the folding screen module and electronic equipment. The supporting assembly comprises a supporting layer, and the supporting layer is provided with a first surface facing a folding screen and a second surface back to the folding screen; the second surface is provided with a thinned area, and the thickness of the supporting layer at the thinned area is smaller than or equal to the thickness of the supporting layer outside the thinned area; the density of the first weight reduction layer and the density of the second weight reduction layer are both smaller than that of the supporting layer, the first weight reduction layer is attached to the first surface, the second weight reduction layer is arranged in the thinning area, the purpose of weight reduction can be achieved, and the folding stability of the folding screen is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of supporting structures. Specifically, the utility model relates to a supporting component for a folding screen module, a folding screen module and an electronic device. Background Art

[0002] When the existing screen is folded, a rotating mechanism is required to provide power for the flexible screen.

[0003] However, the traditional rotating mechanism has a large number of parts, which can easily squeeze the flexible screen; the rotating mechanism causes stress concentration on the flexible screen, which can easily lead to problems such as screen cracks, bright lines or delamination, affecting the integrity of the flexible screen and the stability of the display. Utility Model Content

[0004] One object of the present utility model is to provide a new technical solution for a support assembly of a folding screen module, a folding screen module and an electronic device.

[0005] According to a first aspect of the utility model, there is provided a support assembly for a folding screen module, comprising:

[0006] A support layer, the support layer having a first surface facing the folding screen and a second surface facing away from the folding screen, a thinning area being provided on the second surface, and a thickness of the support layer in the thinning area being less than or equal to a thickness of the support layer outside the thinning area;

[0007] A first weight-reducing layer and a second weight-reducing layer, wherein the density of the first weight-reducing layer and the second weight-reducing layer are both less than the density of the supporting layer, the first weight-reducing layer is attached to the first surface, and the second weight-reducing layer is arranged in the thinning area.

[0008] Optionally, the first weight-reducing layer is a carbon fiber layer, and fiber filaments in the carbon fiber layer are perpendicular to the folds of the folding screen.

[0009] Optionally, the support layer includes a support area, and the support area is correspondingly connected to the folding area of ​​the folding screen;

[0010] The support area includes an inner fold support area, and the inner fold support area is provided with a plurality of first through holes, and the plurality of first through holes are distributed in an array in the inner fold support area.

[0011] Optionally, the first weight-reducing layer includes a hollow area, and the hollow area is arranged corresponding to the inward folding support area;

[0012] The hollow area is provided with a plurality of second through holes, and the plurality of second through holes are distributed in an array in the hollow area and are correspondingly connected with the plurality of first through holes.

[0013] Optionally, a filling portion is further included, and the filling portion is filled in the first through hole and the second through hole.

[0014] Optionally, a buffer layer is further included, and the first weight-reducing layer is bonded to the inner side of the folding screen through the buffer layer.

[0015] Optionally, the support area includes a reverse fold support area, and the reverse fold support area is connected to both sides of the inward fold support area through a flat plate support area;

[0016] A groove is formed on a surface of the folding support area away from the folding area, and the groove is parallel to the fold of the folding screen.

[0017] Optionally, the thickness of the support layer at the thinned area is equal to the thickness of the support layer at the groove.

[0018] Optionally, the support layer includes a non-bending support area, and the non-bending support area is connected to a side of the inflected support area away from the flat support area;

[0019] The thinned area is located in the non-bending support area.

[0020] Optionally, the surface roughness of the first weight-reducing layer is less than or equal to 1.5 μm.

[0021] Optionally, the first weight-reducing layer is bonded to the supporting layer via an adhesive layer.

[0022] According to a second aspect of the present invention, a folding screen module is provided, comprising the support assembly described in the first aspect.

[0023] Correspondingly, the utility model also provides an electronic device, comprising the folding screen module.

[0024] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0026] Figure 1 A support assembly for a folding screen module provided in one embodiment of the utility model Figure 1 ;

[0027] Figure 2 A support assembly for a folding screen module provided in one embodiment of the utility model Figure 2 ;

[0028] Figure 3 A partial schematic diagram of a support assembly for a folding screen module provided in one embodiment of the utility model Figure 1 ;

[0029] Figure 4 A partial schematic diagram of a support assembly for a folding screen module provided in one embodiment of the utility model Figure 2 ;

[0030] Figure 5 A support assembly for a folding screen module provided in one embodiment of the utility model Figure 3 ;

[0031] Figure 6 A schematic diagram of a support assembly for a folding screen module in a folded state provided by one embodiment of the utility model;

[0032] Figure 7 A schematic diagram of an inner folding support area of ​​a support assembly for a folding screen module provided by one embodiment of the utility model;

[0033] Figure 8 A schematic diagram of a folded support area of ​​a support assembly for a folding screen module provided in one embodiment of the utility model;

[0034] Fig. 9 A partial schematic diagram of a support assembly for a folding screen module provided by an embodiment of the utility model Figure 1 (including the filling part in the filled state);

[0035] Fig.10 A partial schematic diagram of a support assembly for a folding screen module provided by an embodiment of the utility model Figure 2 (including the filling part in the filled state);

[0036] Fig.11 A partial schematic diagram of a support assembly for a folding screen module provided by an embodiment of the utility model Figure 3 (including the filling part in the filled state);

[0037] Fig.12 A partial side view of a support assembly for a folding screen module provided by one embodiment of the utility model;

[0038] Fig.13 A schematic diagram of a hinge for a support assembly of a folding screen module provided by one embodiment of the utility model;

[0039] Fig.14 A flowchart for manufacturing a support assembly for a folding screen module is provided for one embodiment of the utility model.

[0040] in:

[0041] 1. Folding screen; 11. Folding area; 111. Inner folding area; 112. Reverse folding area; 113. Flat plate area; 12. Non-bending area; 2. Support layer; 21. Support area; 211. Inner folding support area; 212. First through hole; 213. Reverse folding support area; 214. Groove; 215. Convex rib; 216. Flat plate support area; 217. Non-bending support area; 22. Thinning area; 3. First weight reduction layer; 31. Hollow area; 311. Second through hole; 4. Second weight reduction layer; 5. Hinge; 51. Main bracket; 52. Door panel; 6. Buffer layer; 7. Filling part; 8. Middle frame. DETAILED DESCRIPTION

[0042] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0043] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0044] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0048] Reference Figure 1 and Figure 2 , an embodiment of the present application provides a support assembly for a folding screen module, the support assembly comprising:

[0049] Support layer 2, support layer 2 has a first surface facing toward folding screen 1 and a second surface facing away from folding screen 1; see Fig.12 , a thinning area 22 is provided on the second surface, and the thickness of the support layer 2 at the thinning area 22 is less than or equal to the thickness of the support layer 2 outside the thinning area 22;

[0050] The first weight-reducing layer 3 and the second weight-reducing layer 4 have densities that are less than the density of the supporting layer 2 . The first weight-reducing layer 3 is attached to the first surface, and the second weight-reducing layer 4 is disposed in the thinning area 22 .

[0051] In this embodiment, Figure 1 This is an exploded view of the support assembly when viewed from the side facing the folding screen 1. Figure 2 The exploded view of the support assembly is viewed from a side away from the folding screen 1; the first surface of the support layer 2 can be Figure 1 The upper surface of the middle support layer 2 and the second surface of the support layer 2 can be Figure 1 The lower surface of the middle support layer 2; the thinned area 22 on the support layer 2 is an area on the support layer 2 with reduced thickness, such as etching or cutting a recessed area on the second surface of the support layer 2 to form a thinned area in the recessed area, and the thickness of the support layer 2 in the thinned area is Fig.12 t1 in the figure, and the thickness of the supporting layer 2 outside the thinned area 22 is t.

[0052] In one embodiment, the support layer 2 may be a high-strength metal layer, alloy layer or carbon fiber layer, so as to provide support for the folding screen 1 through the support layer 2; for example, when the folding screen module is undergoing a drop test, the support provided by the support layer 2 to the folding screen 1 can avoid stress concentration on the folding area of ​​the folding screen 1 caused by rotating mechanisms such as hinges, thereby ensuring the integrity of the folding screen 1 and the stability of the display.

[0053] The density of the first weight-reducing layer 3 and the second weight-reducing layer 4 are both lower than the density of the supporting layer 2. For example, the first weight-reducing layer 3 may be a carbon fiber layer. Specifically, the carbon fiber layer may be molded on the first surface of the supporting layer 2 by compression molding. On the basis of ensuring the bonding strength between the first weight-reducing layer 3 and the supporting layer 2, the purpose of weight reduction is achieved.

[0054] The second weight-reducing layer 4 is arranged in the thinning area 22 of the supporting layer 2. The second weight-reducing layer 4 can be a carbon fiber metal composite layer or an aluminum alloy layer. The carbon fiber metal composite layer can be integrally molded in the thinning area 22 of the supporting layer 2, or the carbon fiber metal composite layer can be separately molded and then pasted on the thinning area 22 of the supporting layer 2.

[0055] By respectively arranging the first weight-reducing layer 3 and the second weight-reducing layer 4 on the two side surfaces of the supporting layer 2, and the density of the first weight-reducing layer 3 and the second weight-reducing layer 4 are both less than the density of the supporting layer 2, the purpose of weight reduction can be achieved while ensuring that the total thickness of the supporting component remains unchanged, and the folding stability of the folding screen 1 can be ensured.

[0056] In addition, the multi-layer support component formed by the combination of the first weight-reducing layer 3 and the second weight-reducing layer 4 with the support layer 2 can improve the impact resistance and folding resilience of the support component while taking into account lightness and thinness.

[0057] The support component for the folding screen module provided in the embodiment of the present application includes a support layer 2, the support layer 2 has a first surface facing the folding screen 1 and a second surface facing away from the folding screen 1; a thinning area 22 is provided on the second surface, and the thickness of the support layer 2 in the thinning area 22 is less than or equal to the thickness of the support layer 2 outside the thinning area 22; a first weight reduction layer 3 and a second weight reduction layer 4, the density of the first weight reduction layer 3 and the second weight reduction layer 4 are both less than the density of the support layer 2, the first weight reduction layer 3 is attached to the first surface, and the second weight reduction layer 4 is provided in the thinning area 22, which can achieve the purpose of weight reduction and ensure the folding stability of the folding screen 1.

[0058] In one embodiment, the first weight-reducing layer 3 is a carbon fiber layer, and the fiber filaments in the carbon fiber layer are perpendicular to the folds of the folding screen 1 .

[0059] In this embodiment, since the first weight reduction layer 3 is adhered to the first surface of the support layer 2 and directly contacts the folding screen 1, in order to avoid damage to the folding screen 1 caused by the protrusions in the first weight reduction layer 3, a first weight reduction layer 3 with a carbon fiber structure can be used to improve the flatness of the first weight reduction layer 3. The roughness of the surface of the first weight reduction layer 3 can also be reduced through the carbon fiber structure, thereby improving the fit and bonding stability between the first weight reduction layer 3 and the folding screen 1.

[0060] In one embodiment, the folding screen 1 is folded in the middle position along its long side direction, and the fiber filaments in the carbon fiber layer are perpendicular to the folding line of the folding screen 1, that is, the fiber filaments in the carbon fiber layer are parallel to the long side direction of the folding screen 1. This can prevent the fiber filaments in the carbon fiber layer from spreading and ensure the structural stability of the first weight reduction layer 3 after the folding screen 1 is frequently bent.

[0061] In one embodiment, see Figures 3 to 6 , the supporting layer 2 includes a supporting area 21, and the supporting area 21 is correspondingly connected to the folding area 11 of the folding screen 1;

[0062] The support area 21 includes an inner fold support area 211 , and the inner fold support area 211 is provided with a plurality of first through holes 212 . The plurality of first through holes 212 are distributed in an array in the inner fold support area 211 .

[0063] In this embodiment, by setting a through hole array in the inner folding support area 211, the flexibility and foldability of the inner folding support area 211 are improved. For example, the inner folding support area 211 can withstand more than 200,000 foldings and maintain structural integrity, and can keep the inner folding support area 211 from breaking during elastic deformation, thereby providing effective support and protection for the inner folding area of ​​the folding screen 1. At the same time, the hole setting of the first through hole 212 on the inner folding support area 211 can also achieve the purpose of reducing weight.

[0064] In one embodiment, the through holes provided in the inner folding support area 211 can be formed by etching, which can ensure the setting accuracy of the first through hole 212 and maintain the flatness of the support area 21, thereby improving the resilience while ensuring the rigidity of the support area 21, which is beneficial to improving the bending performance and overall support of the support layer 2, and can reduce the creases of the support layer 2.

[0065] In one embodiment, see Fig. 9 and Fig.10 , the first weight-reducing layer 3 includes a hollow area 31, and the hollow area 31 is arranged corresponding to the inner folding support area 211;

[0066] The hollow area 31 is provided with a plurality of second through holes 311 . The plurality of second through holes 311 are distributed in an array in the hollow area 31 and are connected with the plurality of first through holes 212 correspondingly.

[0067] In this embodiment, by providing a through hole array in the hollow area 31, the flexibility and foldability of the hollow area 31 are improved, and the hollow area 31 can be kept from breaking during elastic deformation, thereby providing effective support and protection for the folding screen 1.

[0068] At the same time, multiple second through holes 311 are correspondingly connected to multiple first through holes 212, which can improve the correspondence of the structural strength of the hollow area 31 of the first weight reduction layer 3 and the inward folding support area 211 of the support layer 2. Specifically, the harder solid structure of the hollow area 31 corresponds to the harder solid structure of the support layer 2, and the softer through hole structure of the hollow area 31 corresponds to the softer through hole structure of the support layer 2, so as to ensure the consistency of the first weight reduction layer 3 and the support layer 2 when bending.

[0069] In one embodiment, see Fig. 9 and Fig.10 The supporting assembly further includes a filling portion 7 , which is filled in the first through hole 212 and the second through hole 311 .

[0070] In this embodiment, since the multiple second through holes 311 are correspondingly connected to the multiple first through holes 212, in order to improve the bonding strength between the first weight reduction layer 3 and the supporting layer 2, glue or elastic rubber and plastic can be integrally filled in the first through holes 212 and the second through holes 311 to firmly connect the first weight reduction layer 3 and the supporting layer 2 into one; and after the first through holes 212 and the second through holes 311 are filled with the filling part 7, the flatness of the surface of the first weight reduction layer 3 and the supporting layer 2 can be ensured, thereby improving the appearance imprint of the folding screen 1 caused by the through hole array.

[0071] At the same time, the filling part 7 provides buffering and protection for the hollow area 31 of the first weight-reducing layer 3 and the inner folding support area 211 of the supporting layer 2, which can isolate the top imprint of the folding screen 1 by structures such as sharp points or grooves in the hinge structure, and effectively improve the anti-smash and anti-fall performance of the folding screen 1.

[0072] In one embodiment, see Figure 5 The support component also includes a buffer layer 6, and the first weight-reducing layer 3 is bonded to the inner side of the folding screen 1 through the buffer layer 6. On the basis of ensuring the stability of the connection between the support layer 2 and the first weight-reducing layer 3 and the folding screen 1, the deformation of the buffer layer 6 can also be used to prevent the support layer 2 and the first weight-reducing layer 3 from squeezing the folding screen 1.

[0073] In this embodiment, the buffer layer 6 can be a pure adhesive film, or the buffer layer 6 can be a structure of an elastic substrate and double-sided tape, both of which can play a connecting and buffering role; the elastic substrate can be a PI (polyimide) plastic film, PET (polyethylene terephthalate) plastic film or foam, so as to provide a buffer for the folding screen 1, while isolating the support layer 2 and the first weight reduction layer 3 from the risk of displaying convex and concave mold impressions on the folding screen 1, thereby improving the performance of the front of the folding screen 1 in resisting external impacts.

[0074] In one embodiment, the folding screen 1 is composed of a multi-layer structure. Figure 5 From the perspective of viewing angle, from top to bottom, the folding screen 1 includes a first cover plate, a glue layer, a second cover plate, a polarizing layer, a panel layer and a supporting film layer in sequence. The first cover plate, the glue layer, the second cover plate, the polarizing layer, the panel layer and the supporting film layer are glued together with OCA (optical glue) to ensure the display effect and structural integrity of the folding screen 1.

[0075] In one embodiment, see Figure 3 and Figure 4 , the support area 21 includes a reverse fold support area 213, and the reverse fold support area 213 is connected to both sides of the inner fold support area 211 through a flat plate support area 216;

[0076] A groove 214 is formed on a surface of the folding support area 213 away from the folding area 11 of the folding screen 1 , and the groove 214 is parallel to the fold of the folding screen 1 .

[0077] In this embodiment, the folding area 11 of the folding screen 1 includes an inner folding area 111, a reverse folding area 112 and a flat plate area 113. The inner folding support area 211 is correspondingly abutted against the inner folding area 111; the reverse folding support area 213 is correspondingly abutted against the reverse folding area 112, and the flat plate area 113 is relatively connected with the flat plate support area 216 to avoid deformation of the flat plate area 113 and ensure the flatness of the flat plate area 113 in the folding screen 1.

[0078] In this embodiment, see Figure 1 The side of the inflection support area 213 close to the folding screen 1 has a smooth surface, and the smooth surface of the inflection support area 213 is in contact with the corresponding inflection area 112 to avoid the inflection support area 213 from hitting a local position on the inflection area 112, thereby ensuring that the inflection support area 213 provides stable support to the inflection area 112.

[0079] See also Figure 3 A plurality of grooves 214 are arranged on the side of the inflection support area 213 away from the folding screen 1. When the inflection support area 213 bends following the folding screen 1, the arrangement of the grooves 214 can reduce the folding rebound force of the folding screen module, and at the same time reduce the bending stress of the inflection area 112, thereby avoiding stratification of the support layer 2 and the folding screen 1 when they are bent together.

[0080] In one embodiment, a plurality of grooves 214 are formed on a surface of the inflected support area 213 away from the inflected area 112, and convex ribs 215 are formed between adjacent grooves 214;

[0081] The width of the groove 214 is greater than or equal to half of the thickness of the inflected support area 213 .

[0082] In this embodiment, the convex ribs 215 between adjacent grooves 214 can form reinforcing ribs of the inflection support area 213, ensuring the supporting rigidity of the inflection support area 213 to the inflection area 112. The width w of the groove 214 is greater than or equal to half of the thickness h of the inflection support area 213 (the same as the thickness of the inflection support area 213 at the convex ribs 215), which can improve the bending performance of the inflection support area 213 and facilitate the inflection support area 213 to follow the inflection area 112 to be inflected.

[0083] In one embodiment, the support layer 2 may be a metal layer or an alloy layer, the grooves 214 are grooves made in the metal layer or the alloy layer by chemical etching, and ribs 215 are formed between adjacent grooves 214 to ensure the rigidity and folding flexibility of the support layer 2.

[0084] In another embodiment, the support layer 2 may be a carbon fiber layer, and the grooves 214 are grooves formed on the carbon fiber layer by laser or plasma beam processing, and ribs 215 are formed between adjacent grooves 214 to ensure the toughness and structural strength of the support layer 2.

[0085] In one embodiment, the inner folded support area 211 is located in the middle of the support layer 2 along the length direction, and the reverse folded support area 213 and the flat support area 216 are symmetrically connected on both sides of the inner folded support area 211 .

[0086] In one embodiment, see Fig.12 , the thickness t1 of the support layer 2 at the thinned area 22 is equal to the thickness t2 of the support layer 2 at the groove 214. That is, the depth of thinning on the second surface of the support layer 2 is equal to the depth of the groove 214 formed by the support layer 2 on the inflected support area 213, so as to ensure the consistency of the thickness of the base of the support layer 2 after thinning and digging the groove.

[0087] In one embodiment, the thickness of the first weight-reducing layer 3 is equal to the thickness t2 of the supporting layer 2 at the groove 214, and the thickness t1 of the supporting layer 2 at the thinning area 22 is equal to the thickness t2 of the supporting layer 2 at the groove 214 and both are equal to half of the overall thickness t of the supporting layer 2, so as to achieve the purpose of reducing the weight of the supporting assembly by more than 50%.

[0088] In one embodiment, see Figure 3 and Fig.12, the support layer 2 includes a non-bending support area 217, and the non-bending support area 217 is connected to a side of the inflected support area 213 away from the flat support area 216;

[0089] The thinned region 22 is located in the non-bending support area 217 .

[0090] In this embodiment, the non-bending support area 217 of the support layer 2 is symmetrically connected to the side of the inflected support area 213 away from the flat support area 216, and the non-bending support area 217 is correspondingly connected to the non-bending areas 12 on both sides of the folding screen 1 to support the non-bending areas 12 of the folding screen 1.

[0091] Furthermore, the second weight reduction layer 4 is arranged in the thinning area 22 on the non-bending support area 217 and is connected to the middle frames 8 on both sides. The thickness of the non-bending support area 217 of the support layer 2 is thinned, and the lightweight material of the second weight reduction layer 4 is used to compensate for the thickness difference of the thinning area 22, that is, the thickness of the second weight reduction layer 4 is equal to the thinning depth t-t1 of the thinning area 22, thereby ensuring the flatness of the surfaces on both sides after the support layer 2 and the second weight reduction layer 4 are combined, thereby achieving the goal of reducing weight.

[0092] Moreover, when the middle frames 8 on both sides move relatively, the non-bending areas 12 on both sides of the folding screen 1 can be driven to move closer to or away from each other, and the non-bending support area 217 can isolate the problem of display screen imprint of the folding screen 1 caused by the uneven surface of the middle frame 8.

[0093] In one embodiment, see Fig.13 The support assembly further includes a hinge 5, which is disposed on a side of the support layer 2 away from the folding screen 1, and includes a main support 51 and two door panels 52, and the two door panels 52 are movably connected to both sides of the main support 51;

[0094] The door panel 52 is connected to the flat panel supporting area 216 accordingly.

[0095] In this embodiment, two door panels 52 are connected to both sides of the main bracket 51 and can swing relative to the main bracket 51, and the surface of the door panel 52 is used to be connected and fixed to the flat support area 216 of the support layer 2, so that the folding screen 1 can be driven to fold by the swing of the two door panels 52.

[0096] During the folding process of the folding screen 1, the folding area 11 of the folding screen 1 forms a teardrop-shaped cross-section, the flat plate area 113 in the folding area 11 does not deform, and the flat plate area 113 is arranged corresponding to the door panel of the hinge. The inner folding area 111 in the folding area 11 is received in the teardrop space formed by the door panel 52 and the main bracket 51, and the reverse folding area 112 in the folding area 11 is located in the transition area between the middle frame 8 and the door panel 52, which is used to reduce the bending stress of the folding screen 1 and prevent damage and delamination of the folding screen 1.

[0097] In one embodiment, the surface roughness of the first weight-reducing layer 3 is less than or equal to 1.5 μm.

[0098] In this embodiment, since the first weight reduction layer 3 is adhered to the first surface of the support layer 2 and directly contacts the folding screen 1, the surface of the first weight reduction layer 3 is leveled, or the first weight reduction layer 3 is formed by a material with high flatness, so that the surface roughness of the first weight reduction layer 3 is less than or equal to 1.5μm, the fit and bonding stability of the first weight reduction layer 3 and the folding screen 1 can be improved.

[0099] In one embodiment, the thickness of the first weight-reducing layer 3 may be in the range of 0.03-0.1 mm, the thickness t of the supporting layer 2 may be in the range of 0.08-0.2 mm, and the depth t-t1 of the thinning area 22 may be in the range of 0.03-0.1 mm, so as to achieve the purpose of lightweighting the supporting assembly while ensuring the structural strength of the supporting assembly.

[0100] In one embodiment, the first weight-reducing layer 3 is bonded to the supporting layer 2 via an adhesive layer to ensure the convenience and integrity of the connection between the first weight-reducing layer 3 and the supporting layer 2 .

[0101] In one embodiment, the first weight-reducing layer 3 is integrally formed with the supporting layer 2 , for example, the first weight-reducing layer 3 is directly compression molded on the supporting layer 2 to ensure the strength of the combination of the first weight-reducing layer 3 and the supporting layer 2 .

[0102] See also Fig.14 , the forming method of the support component includes:

[0103] S1, the support layer 2 is formed by an etching process, and a support area pattern is made on the support layer 2, and holes are etched in the front camera, light sensing and infrared regions.

[0104] S2, the second weight-reducing layer 4 is connected to the thinned region 22 of the supporting layer 2.

[0105] From S3 to S4, the first weight-reducing layer 3 and the supporting layer 2 are integrally formed by hot pressing.

[0106] The first weight-reducing layer 3 is a carbon fiber layer, and the hot pressing method can combine the carbon fiber and the support layer 2 of the titanium alloy material together. Before hot pressing, the carbon fiber and the titanium alloy need to be surface treated and coated with an adhesive. Then, the carbon fiber and the titanium alloy are placed in a hot pressing mold, heated to the hot pressing temperature, and pressure is applied to bond the carbon fiber and the titanium alloy together under high temperature and high pressure.

[0107] Furthermore, the adhesive may be epoxy resin or acrylic resin. Epoxy resin has high strength, high modulus and excellent chemical corrosion resistance, while acrylic resin has good wettability and high temperature resistance, which can effectively improve the bonding strength between carbon fiber and titanium alloy.

[0108] Further, see Fig.14 After the first weight-reducing layer 3 and the support layer 2 are integrally hot-pressed, the forming method of the support assembly further includes:

[0109] S5 to S6 , providing a filling portion 7 in the first through hole 212 and the second through hole 311 .

[0110] Specifically, the filling part 7 can be a buffer glue filled in the first through hole 212 and the second through hole 311. The buffer glue can be an elastic material such as liquid silicone or TPU (thermoplastic polyurethane elastomer) to enhance the resilience of the first weight-reducing layer 3 and the supporting layer 2, thereby effectively improving the folding performance and impact resistance of the folding screen 1.

[0111] An embodiment of the present application provides a folding screen module, which includes the above-mentioned supporting assembly.

[0112] In the supporting assembly of the folding screen module, the first weight-reducing layer 3 is attached to the first surface, and the second weight-reducing layer 4 is arranged in the thinning area 22, which can achieve the purpose of weight reduction and ensure the folding stability of the folding screen 1.

[0113] An embodiment of the present application provides an electronic device, which includes the above-mentioned folding screen module.

[0114] It should be noted that the electronic device may be a terminal device with a folding function, such as a mobile phone, a tablet or a computer.

[0115] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A support assembly for a folding screen module, characterized in that: include: A support layer (2), the support layer (2) having a first surface facing the folding screen (1) and a second surface facing away from the folding screen (1), a thinning region (22) being provided on the second surface, the thickness of the support layer (2) in the thinning region (22) being less than or equal to the thickness of the support layer (2) outside the thinning region (22); A first weight-reducing layer (3) and a second weight-reducing layer (4), wherein the density of the first weight-reducing layer (3) and the second weight-reducing layer (4) are both less than the density of the supporting layer (2), the first weight-reducing layer (3) is attached to the first surface, and the second weight-reducing layer (4) is arranged in the thinning area (22).

2. The support assembly according to claim 1, characterized in that: The first weight-reducing layer (3) is a carbon fiber layer, and the fiber filaments in the carbon fiber layer are perpendicular to the folds of the folding screen (1).

3. The support assembly according to claim 1, characterized in that: The support layer (2) comprises a support area (21), and the support area (21) is correspondingly connected to the folding area (11) of the folding screen (1); The support area (21) comprises an inner fold support area (211), the inner fold support area (211) is provided with a plurality of first through holes (212), and the plurality of first through holes (212) are distributed in an array in the inner fold support area (211).

4. The support assembly according to claim 3, characterized in that: The first weight-reducing layer (3) comprises a hollow area (31), and the hollow area (31) is arranged corresponding to the inward folding support area (211); The hollow area (31) is provided with a plurality of second through holes (311), and the plurality of second through holes (311) are distributed in an array in the hollow area (31) and are correspondingly connected to the plurality of first through holes (212).

5. The support assembly according to claim 4, characterized in that: It also comprises a filling portion (7), wherein the filling portion (7) is filled in the first through hole (212) and the second through hole (311).

6. The support assembly according to claim 1, characterized in that It also includes a buffer layer (6), and the first weight-reducing layer (3) is bonded to the inner side of the folding screen (1) through the buffer layer (6).

7. The support assembly according to claim 3, characterized in that: The support area (21) comprises a reverse fold support area (213), and the reverse fold support area (213) is connected to two sides of the inward fold support area (211) through a flat plate support area (216); A groove (214) is formed on a surface of one side of the folding support area (213) away from the folding area (11), and the groove (214) is parallel to the fold of the folding screen (1).

8. The support assembly according to claim 7, characterized in that: The thickness of the support layer (2) at the thinned region (22) is equal to the thickness of the support layer (2) at the groove (214).

9. The support assembly according to claim 7, characterized in that: The support layer (2) comprises a non-bending support area (217), wherein the non-bending support area (217) is connected to a side of the inflected support area (213) away from the flat support area (216); The thinned region (22) is located in the non-bending support area (217).

10. The support assembly according to claim 1, characterized in that The surface roughness of the first weight-reducing layer (3) is less than or equal to 1.5 μm.

11. The support assembly according to claim 1, characterized in that The first weight-reducing layer (3) is bonded to the supporting layer (2) via an adhesive layer.

12. A folding screen module, characterized in that: The invention comprises the support assembly according to any one of claims 1 to 11.

13. An electronic device, characterized in that: Including the folding screen module described in claim 12.

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