Flexible VC, folding screen mobile phone and electronic equipment

Abstract

The utility model discloses a flexible VC, folding screen cell phone and electronic equipment, the flexible VC comprises a first flexible cover plate and a second flexible cover plate, the first flexible cover plate and the second flexible cover plate are connected to form a cavity capable of accommodating a heat conduction working medium, a flexible capillary structure is arranged in the cavity, the first flexible cover plate is provided with a first buffer structure, and the second flexible cover plate is provided with a second buffer structure. The first buffer structure is used for buffering the bending of the first flexible cover plate on the first buffer structure; the second flexible cover plate comprises a second buffer structure, and the second buffer structure is used for buffering bending of the second flexible cover plate on the second buffer structure; the flexible capillary structure comprises a third buffer structure, and the third buffer structure is used for buffering bending of the flexible capillary structure on the third buffer structure; the first buffer structure, the second buffer structure and the third buffer structure are sequentially and correspondingly connected in an abutting mode in the thickness direction of the flexible VC so that the flexible VC can be bent in the bending direction.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat dissipation technical field, especially a novel capillary support structure and its processing method, and the even temperature plate of application of this novel capillary support structure. BACKGROUND

[0002] With the rise of intelligent terminal consumer electronics, especially folding screen mobile phone, the VC (Vapor Chamber, even temperature plate) for heat conduction and heat dissipation of mobile phone is put forward higher design requirement and performance requirement.

[0003] When the traditional flexible VC is folded in the folding screen mobile phone, the stress generated by bending will be concentrated in the bending place, so that the VC is easy to break, not only affects the structural strength of VC and folding screen mobile phone, and even causes VC liquid leakage, which not only affects the heat dissipation effect of VC on folding screen mobile phone, but also causes immersion damage to the internal circuit of folding screen mobile phone

[0004] The present application at least solves at least one of the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model discloses a flexible VC, folding screen mobile phone and electronic equipment to solve the technical problem that the traditional flexible VC is folded in the folding screen mobile phone, and the stress generated by bending will be concentrated in the bending place, so that the VC is easy to break, not only affects the structural strength of VC and folding screen mobile phone, and even causes VC liquid leakage, which not only affects the heat dissipation effect of VC on folding screen mobile phone, but also causes immersion damage to the internal circuit of folding screen mobile phone, the flexible VC of the present application can reduce the stress and deformation generated by the area bending and stretching, prevent the flexible VC from breaking due to bending, improve the structural strength of the flexible VC, avoid the heat conducting medium leakage caused by the rupture of the flexible VC, ensure that the flexible VC has good heat dissipation effect on the folding screen mobile phone, and reduce the risk of immersion damage to the internal circuit of the folding screen mobile phone caused by the leakage of the heat conducting medium.

[0006] The utility model discloses the following technical scheme is adopted to realize the purpose:

[0007] The utility model discloses a flexible VC, including first flexible cover and second flexible cover, first flexible cover and second flexible cover are connected to form the cavity that can hold heat conducting medium, and the flexible capillary structure is equipped in the cavity;

[0008] The first flexible cover plate is provided with a first buffer structure for buffering bending of the first flexible cover plate at the first buffer structure; the second flexible cover plate comprises a second buffer structure for buffering bending of the second flexible cover plate at the second buffer structure; and the flexible capillary structure comprises a third buffer structure for buffering bending of the flexible capillary structure at the third buffer structure.

[0009] The first buffer structure, the second buffer structure and the third buffer structure correspondingly abut along the thickness direction of the flexible VC, so that the flexible VC can be bent along the bending direction.

[0010] Compared with the prior art, the first flexible cover plate, the flexible capillary structure and the second flexible cover plate are in a laminated structure and are arranged in a laminated manner along the thickness direction of the flexible VC. When the flexible VC is bent along the preset bending direction, the first flexible cover plate is bent at the first buffer structure along the bending direction, the flexible capillary structure is bent at the third buffer structure along the bending direction, and the second flexible cover plate is bent at the second buffer structure along the bending direction. Therefore, the flexible VC can be bent in a specific area.

[0011] Further, when the flexible VC is bent in a specific area along the bending direction, the first buffer structure, the third buffer structure and the second buffer structure adaptively buffer the bending of the specific area along the bending direction, so that the flexible VC with the laminated structure can better adapt to deformation when being bent, reduce stress and deformation caused by area bending and stretching, prevent the flexible VC from being broken due to bending, improve the structural strength of the flexible VC, avoid leakage of the heat-conducting working medium caused by breakage of the flexible VC, ensure that the flexible VC has a good heat-conducting and heat-dissipating effect on the folding screen mobile phone, and reduce the risk of liquid damage to the internal circuit of the folding screen mobile phone caused by leakage of the heat-conducting working medium.

[0012] In some possible implementation manners of the first aspect, the third buffer structure is provided with a through groove penetrating through the third buffer structure along the thickness direction; and / or

[0013] The length of the through groove is not less than the length of the third buffer structure.

[0014] In some possible implementation manners of the first aspect, the first flexible cover plate and / or the second flexible cover plate is located on one side of the cavity and is provided with a plurality of first protruding portions for abutting against the flexible capillary structure.

[0015] In some possible implementation manners of the first aspect, at least one side of the flexible capillary structure is provided with a plurality of second protrusions for abutting against the first flexible cover plate and / or the second flexible cover plate.

[0016] In some possible implementation manners of the first aspect, the first buffer structure, the second buffer structure and the third buffer structure are respectively formed by at least one set of protrusions and recesses adjacent in a first direction, and the first direction is perpendicular to the bending direction.

[0017] In some possible implementation manners of the first aspect, the adjacent protrusions and recesses form a wave structure in the first direction.

[0018] In some possible implementation manners of the first aspect, the first flexible cover plate and / or the second flexible cover plate comprises a polymer layer.

[0019] In some possible implementation manners of the first aspect, the first flexible cover plate and / or the second flexible cover plate further comprises a metal layer arranged on an inner surface of the polymer layer, and the metal layer is located in the cavity.

[0020] In some possible implementation manners of the first aspect, the flexible capillary support structure is a layer of hydrophilic organic compound material or a structure layer formed by stacking a plurality of layers of hydrophilic organic compound material.

[0021] In some possible implementation manners of the first aspect, the layer of organic compound material is a mesh fabric, and the second protrusions are formed by the mesh fabric using a jacquard fabric process.

[0022] The second aspect of the utility model provides a folding screen mobile phone, the folding screen mobile phone includes the flexible VC of the first aspect.

[0023] The third aspect of the utility model provides an electronic device, and the electronic device includes the flexible VC of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is an exploded structural schematic view of the flexible VC of the utility model embodiment;

[0025] Figure 2 It is a bending schematic view of the flexible VC of the utility model embodiment;

[0026] Figure 3 It is a cross-sectional structural schematic view of the flexible VC of the utility model embodiment;

[0027] Figure 4 It is the enlarged structure schematic view of A place in the utility model embodiment Figure 1

[0028] ​Figure 5 For the embodiment of the present application Figure 1 The enlarged structure schematic view at B.

[0029] In the figure, 1, the first flexible cover plate; 2, the second flexible cover plate; 3, the flexible capillary structure; 11, the first buffer structure; 12, the first protruding part; 21, the second buffer structure; 31, the third buffer structure; 311, the through slot; 100, the cavity. DETAILED DESCRIPTION

[0030] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and fully convey the inventive aspects of the example implementations to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements will not be repeated.

[0031] In the description of the present application, it should be explained that, unless otherwise explicitly defined and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation to the present application.

[0033] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or display including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or displays.

[0034] In combination with the accompanying Figures 1-3As shown, the present application provides an embodiment, which provides a flexible VC, including a first flexible cover plate 1 and a second flexible cover plate 2, the first flexible cover plate 1 and the second flexible cover plate 2 are connected to form a cavity 100 capable of accommodating a heat-conducting working medium, and a flexible capillary structure 3 is arranged in the cavity 100. In the embodiment, the first flexible cover plate 1 can be an upper cover plate, and the second flexible cover plate 2 can be a lower cover plate.

[0035] Further, the heat sink also has a hot end in contact with the heat source and a cold end away from the heat source, and the direction in which the hot end points to the cold end is the first direction F3.

[0036] It should be noted that the heat-conducting working medium is a liquid phase change material, such as liquid water, ethanol, and acetone, etc. Through the transformation process of the heat-conducting working medium from liquid to gas and then to liquid, heat is quickly dissipated, thereby playing the heat-conducting and heat-dissipating effect of the flexible VC. In order to ensure that the transformation process of the heat-conducting working medium from liquid to gas and then to liquid will not be affected by impurities, the cavity 100 is generally in a closed vacuum state, thereby improving the heat-conducting and heat-dissipating effect of the flexible VC.

[0037] The first flexible cover plate 1 is provided with a first buffer structure 11, and the first buffer structure 11 is used for buffering the bending of the first flexible cover plate 1 at the first buffer structure 11. The second flexible cover plate 2 includes a second buffer structure 21, and the second buffer structure 21 is used for buffering the bending of the second flexible cover plate 2 at the second buffer structure 21. The flexible capillary structure 3 is provided with a third buffer structure 31, and the third buffer structure 31 is used for buffering the bending of the flexible capillary structure 3 at the third buffer structure 31.

[0038] It should be noted that the flexible capillary structure 3 can be in contact with the first flexible cover plate 1 and the second flexible cover plate 2 at the same time (i.e. along the thickness direction F1 of the flexible VC, one side of the flexible capillary structure 3 is in contact with the first flexible cover plate 1, and the other side is in contact with the second flexible cover plate 2), or it can be separated from each other and placed in the cavity 100 between the first flexible cover plate 1 and the second flexible cover plate 2. The two ways can meet the working requirements of the flexible VC.

[0039] The first buffer structure 11, the third buffer structure 31, and the second buffer structure 21 correspond to the abutment in sequence along the thickness direction of the flexible VC, so that the flexible VC can be bent along the bending direction F2.

[0040] Specifically, along the thickness direction of the flexible VC, one side of the third buffer structure 31 is embedded in the first buffer structure 11, and the second buffer structure 21 is embedded in the other side of the third buffer structure 31, to form a laminated structure.

[0041] The first flexible cover plate 1, the flexible capillary structure 3, and the second flexible cover plate 2 are in a stacked structure and are stacked along the thickness direction of the flexible VC. Since the first buffer structure 11, the third buffer structure 31, and the second buffer structure 21 correspondingly abut along the thickness direction of the flexible VC, when the flexible VC is bent along a preset bending direction, simultaneously, the first flexible cover plate 1 is bent along the bending direction at the first buffer structure 11, the flexible capillary structure 3 is bent along the bending direction at the third buffer structure 31, and the second flexible cover plate 2 is bent along the bending direction at the second buffer structure 21, so that the flexible VC can be bent in a specific area.

[0042] Further, when the flexible VC is bent in a specific area along the bending direction, the first buffer structure 11, the third buffer structure 31, and the second buffer structure 21 adaptively buffer the bending in the specific area along the bending direction, so that the flexible VC in the stacked structure can better adapt to deformation when being bent, reduce stress and deformation caused by area bending and stretching, prevent the flexible VC from being broken due to bending, improve the structural strength of the flexible VC, avoid leakage of the heat-conducting working medium caused by the breakage of the flexible VC, ensure that the flexible VC has a good heat-conducting and heat-dissipating effect on the folding screen mobile phone, and reduce the risk of liquid damage to the internal circuit of the folding screen mobile phone caused by leakage of the heat-conducting working medium.

[0043] Since the folding mobile phone needs to be folded at a high frequency during both factory detection and daily use, the flexible VC can meet the use demand of high-frequency bending of the folding screen mobile phone while having a good heat-conducting and heat-dissipating effect on the folding screen mobile phone.

[0044] In combination with the accompanying drawings, Figure 3 In some specific embodiments, the first buffer structure 11, the second buffer structure 21, and the third buffer structure 31 are respectively formed by at least one group of a column of protrusions and a column of recesses adjacent in a first direction, and the first direction is perpendicular to the bending direction.

[0045] The bending direction can be the length direction of the flexible VC, and in this case, the first direction is the width direction of the flexible VC; or the bending direction can be the width direction of the flexible VC, and in this case, the first direction is the length direction of the flexible VC.

[0046] Further, the adjacent protrusions and recesses can be formed by a stamping process.

[0047] The height difference between the adjacent protrusions and recesses can adaptively buffer the stress caused by bending, so that the stress concentration of the flexible VC is reduced when being bent. In a traditional straight-line structure, stress is concentrated at the bending position, which is easy to cause breakage. The structure design of the adjacent protrusions and recesses can disperse stress and avoid stress concentration at one point, thereby reducing the risk of breakage of the flexible VC.

[0048] In combination with the drawings Figure 3 As a more specific embodiment of the present embodiment, as shown, adjacent protrusions and recesses form a wave-shaped structure along the first direction F3.

[0049] Further, the wave-shaped structure can be formed by a stamping process, i.e., the first, second, and third buffer structures 11, 21, and 31 form a stacked wave-shaped structure, and the design of the wave-shaped structure helps to disperse stress. When subjected to external force, the wave-shaped structure can disperse it to a wider area, avoiding excessive concentration of stress in a certain local area, which helps to prevent the flexible VC from being broken due to stress concentration. Compared with the traditional straight or planar structure, the wave-shaped structure has better stress distribution characteristics.

[0050] Secondly, the wave-shaped structure increases the elasticity of the structure. Since the wave-shaped structure has a certain curvature in shape, it can better adapt to the changes of external force when subjected to external force, and absorb and release energy through its elastic deformation. This elastic deformation helps to reduce stress concentration of the structure when subjected to impact or vibration, thereby improving the impact resistance and vibration resistance of the flexible VC.

[0051] Further, the R-angle circumference of the wave-shaped structure can be designed according to actual needs.

[0052] In some specific embodiments, the first flexible cover plate 1 and / or the second flexible cover plate 2 includes a high polymer layer. The high polymer can be one or more of PI (Polyimide, Polyimide) material, PP (Polypropylene, Polypropylene), PET (Polyethylene terephthalate, Polyethylene terephthalate) material.

[0053] Compared with the traditional VC made of metal material, the flexible VC made of high polymer has better mechanical properties, improves the flexibility of the VC, and makes it lighter and thinner. The flexible VC can realize bending in a specific area, and is well applied to foldable screen phones. It can play a good heat conduction and dissipation effect on the foldable screen phone, and better meet the design and use requirements of lightness, thinness, and high-frequency bending.

[0054] In some specific embodiments, the first flexible cover plate 1 and / or the second flexible cover plate 2 further includes a metal layer arranged on the inner surface of the high polymer layer, and the metal layer is located in the cavity 100.

[0055] The metal layer is used to enhance the air tightness of the polymer, prevent evaporation, and can also be used as a heat conducting layer. Due to the good heat conduction effect of the metal layer, it can quickly conduct heat and increase the heat conductivity of the flexible VC heat spreader in cooperation with the heat conducting working medium. The metal layer is any one of a plated metal layer, a hot-pressed metal layer, a bonded metal layer, or a welded metal layer.

[0056] As a more specific embodiment of the present embodiment, the metal layer is made of one of aluminum material, titanium material or copper material. Among them, aluminum material is easy to process, has good ductility and plasticity. Aluminum material also has good electrical conductivity and thermal conductivity, which is very suitable for manufacturing electronic components or heat sinks. And aluminum material can easily form a dense oxide film in the air, which has good corrosion resistance. In addition, aluminum material is lighter and cheaper than copper material. Titanium material is a high-strength and corrosion-resistant metal material, and copper material has good thermal conductivity and can be well used for flexible VC heat conduction and heat dissipation.

[0057] In some specific embodiments, the flexible capillary structure 3 is a layer of hydrophilic organic material or a structure layer of multiple layers of hydrophilic organic material stacked on each other.

[0058] As a more specific embodiment of the present embodiment, the organic material layer is a mesh fabric, such as non-woven fabric, cloth and other fabric materials, which can be used as the material of the flexible capillary structure 3.

[0059] In some specific embodiments, the first flexible cover plate 1 and / or the second flexible cover plate 2 is located on one side of the cavity 100 and is provided with a plurality of first protrusions 12 for abutting the flexible capillary structure 3. Figure 1 、 3 As shown in FIGS. 1, 4 and 5, the first flexible cover plate 1 is located on one side of the cavity 100 and is provided with a plurality of first protrusions 12 for abutting the flexible capillary structure 3.

[0060] The first protrusion 12 can be formed by a stamping process. Through the first protrusion 12, not only the flexible capillary structure 3 in the cavity can be supported and fixed, but also the overall structural strength of the flexible VC can be improved, the liquid return path after water vapor condensation in the cavity can be optimized, the heat conduction efficiency can be improved, and the heat dissipation effect can be improved.

[0061] In some specific embodiments, at least one side of the flexible capillary structure 3 is provided with a plurality of second protrusions for abutting the first flexible cover plate 1 and / or the second flexible cover plate 2.

[0062] The second protrusion not only can realize the support and fixation of the flexible capillary structure 3 in the cavity, but also can improve the overall structural strength of the flexible VC, optimize the liquid return path after water vapor condensation in the cavity, improve the heat conduction efficiency and improve the heat dissipation effect.

[0063] Further, the second protruding part can be formed by using weaving technology such as jacquard or embroidery, so that the flexible capillary structure 3 has 2D / 3D arrangement and support, and the surface of the flexible capillary structure 3 has greater attraction to liquid, and has bending capability without damaging the structure of the flexible capillary structure 3.

[0064] In the weaving process, the flexible capillary support structure can be woven into different structures by changing the warp and weft, which is theoretically changeable for the selection and design of different products.

[0065] In combination with the accompanying drawings Figure 4 As shown in some specific embodiments, the third buffer structure 31 is provided with a through groove 311 penetrating through the third buffer structure 31 in the thickness direction.

[0066] The through groove 311 serves as a steam passage, increases the diffusion area of water vapor in the cavity, improves the diffusion speed of water vapor, makes the water vapor flow from the hot end to the cold end of the vapor chamber more quickly, speeds up the heat conduction cycle, and improves the heat dissipation efficiency.

[0067] Further, the length of the through groove 311 in the first direction is not less than the length of the third buffer structure 31 in the first direction.

[0068] The traditional capillary structure can be provided with multiple small through holes as steam passages, but if the through holes are provided on the third buffer structure 31, the through holes will be accumulated and blocked when the flexible VC is bent, so that the water vapor cannot pass through. In the present embodiment, since the length of the through groove 311 in the first direction is not less than the length of the third buffer structure 31 in the first direction, the through groove 311 will not be accumulated and blocked when the third buffer structure 31 is bent, so as to ensure good passage of the steam passage.

[0069] It should be further explained that the through groove 311 can further disperse the stress generated in the bending direction, improve the structural strength of the flexible VC, and prevent the flexible VC from being broken due to stress concentration.

[0070] The present application provides another embodiment, which provides a folding screen mobile phone, and the folding screen mobile phone comprises the flexible VC of the first aspect.

[0071] The present application provides another embodiment, which provides an electronic device, and the electronic device comprises the flexible VC of the first aspect.

[0072] The electronic device can be a folding screen mobile phone, or a folding screen tablet or other intelligent terminal.

[0073] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model, and all these changes should belong to the protection scope of the utility model claim.

Claims

1. A flexible VC comprising a first flexible cover plate and a second flexible cover plate, the first and second flexible cover plates being connected to form a cavity capable of containing a thermally conductive working fluid, the cavity having a flexible wick structure disposed therein, characterized by, The first flexible cover plate is provided with a first buffer structure for buffering bending of the first flexible cover plate at the first buffer structure; the second flexible cover plate comprises a second buffer structure for buffering bending of the second flexible cover plate at the second buffer structure; The flexible capillary structure comprises a third buffer structure for buffering bending of the flexible capillary structure at the third buffer structure; The first buffer structure, the second buffer structure and the third buffer structure correspond to abutment in sequence along the thickness direction of the flexible VC, so that the flexible VC can be bent along the bending direction.

2. The flexible VC of claim 1, wherein, The third buffer structure is provided with a through slot penetrating through the third buffer structure along the thickness direction; and / or The length of the through slot is not less than the length of the third buffer structure.

3. The flexible VC of claim 1, wherein, The first flexible cover plate and / or the second flexible cover plate are located on one side of the cavity and are provided with a plurality of first protruding parts for abutting the flexible capillary structure.

4. The flexible VC of claim 1, wherein, At least one side of the flexible capillary structure is provided with a plurality of second protruding parts for abutting the first flexible cover plate and / or the second flexible cover plate.

5. The flexible VC of claim 1, wherein, The first buffer structure, the second buffer structure and the third buffer structure are respectively formed by at least one set of adjacent protrusions and recesses in a first direction, and the first direction is perpendicular to the bending direction.

6. The flexible VC of claim 5, wherein, In the first direction, the adjacent protrusions and recesses form a wave-shaped structure.

7. The flexible VC of any of claims 1-6, wherein, The first flexible cover plate and / or the second flexible cover plate comprise a high polymer layer.

8. The flexible VC of claim 7, wherein, The first flexible cover plate and / or the second flexible cover plate further comprise a metal layer arranged on the inner surface of the high polymer layer, and the metal layer is located in the cavity.

9. The flexible VC of claim 4, wherein, The flexible capillary structure is a layer of hydrophilic organic compound material layer or a structure layer formed by stacking a plurality of layers of hydrophilic organic compound material layers.

10. The flexible VC of claim 9, wherein, The organic compound material layer is a mesh fabric, and the second protruding parts are formed by the mesh fabric using a jacquard fabric process.

11. A foldable-screen mobile phone, characterized in that, The foldable screen mobile phone comprises the flexible VC of any one of claims 1-10.

12. An electronic device, comprising: The electronic device comprises the flexible VC of any one of claims 1-10.

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