Flexible glass, flexible screen and folding electronic equipment

Abstract

The invention relates to flexible glass, a flexible screen and folding electronic equipment, the flexible glass comprises a first supporting part, a second supporting part and a bendable part connected between the first supporting part and the second supporting part, the thickness of the first supporting part and the thickness of the second supporting part are both larger than the thickness of the bendable part, the bendable part is provided with a plurality of sub-parts with different thicknesses, and the sub-parts are arranged on the first supporting part and the second supporting part. The thickness of the sub-part close to the middle of the bendable part is smaller than that of the sub-part away from the middle of the bendable part. According to the flexible glass, the flexible screen and the folding electronic equipment, the bendable part of the flexible glass comprises the multiple sub-parts with different thicknesses, and the thickness of the sub-part close to the middle of the bendable part is smaller than that of the sub-part away from the middle of the bendable part; therefore, the rigidity of the connecting positions of the bendable part, the first supporting part and the second supporting part and the bending performance of the bendable part are considered, so that when the flexible glass is bent corresponding to the position of the bendable part, the bending performance is improved by the plurality of sub-parts of the bendable part, the wrinkle deformation is reduced, and the probability of occurrence of creases is further reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electronic devices, and in particular to flexible glass, flexible screens and foldable electronic devices. Background Art

[0002] Foldable electronic devices, because they can be folded for use, further improve portability and are favored by consumers. Foldable electronic devices need to be equipped with a hinge mechanism to meet the needs of folding.

[0003] In the related art, the flexible screen of a foldable electronic device usually uses flexible glass as protective glass to adapt to its folding performance. At present, the flexible glass in the industry is mainly ultra-thin glass of equal thickness. This form of glass has low strength and a high failure rate. Although thickening the thickness of the flexible glass can enhance the strength, it will also increase the chance of creases. Even if a water drop screen is used, that is, the flexible screen is bent in a water drop-shaped contour when it is folded, it is inevitable that creases will appear at the bending position, which will have an adverse effect on the appearance and reliability of the flexible screen. Summary of the invention

[0004] The present application provides a flexible glass, a flexible screen and a foldable electronic device to solve the technical problem of how to balance strength and bending performance while reducing the probability of creases.

[0005] On the one hand, the present application provides a flexible glass, comprising a first supporting portion, a second supporting portion, and a bendable portion connected between the first supporting portion and the second supporting portion, the thickness of the first supporting portion and the second supporting portion are both greater than the thickness of the bendable portion, the bendable portion has a plurality of sub-portions of unequal thickness, and the thickness of the sub-portion close to the middle of the bendable portion is less than the thickness of the sub-portion away from the middle of the bendable portion.

[0006] On the other hand, the present application provides a flexible screen, including a flexible display panel and the flexible glass as described above, wherein the flexible display panel has a light emitting surface, and the flexible glass is connected to the flexible display panel and covers the light emitting surface.

[0007] The present application provides a foldable electronic device, comprising a hinge mechanism and a flexible screen as described above, wherein the hinge mechanism is connected to the flexible screen, and the hinge mechanism is opposite to the position of the bendable portion of the flexible glass of the flexible screen, and the hinge mechanism is used to drive the position of the flexible screen corresponding to the bendable portion to flatten or fold when rotating.

[0008] The flexible glass, flexible screen and foldable electronic device of the present application, the flexible glass includes a first support part, a second support part and a bendable part connected between the first support part and the second support part, and the thickness of the first support part and the second support part are both greater than the thickness of the bendable part, so that good bending performance can be obtained at the bendable part. The first support part and the second support part are thicker than the bendable part, thereby improving the support strength to reduce the probability of failure of the flexible glass. Since the bendable part includes a plurality of sub-parts of unequal thickness, the thickness of the sub-part close to the middle of the bendable part is less than the thickness of the sub-part away from the middle of the bendable part, thereby taking into account the rigidity of the connection position of the bendable part with the first support part and the second support part and the bending performance at the bendable part, so that when the flexible glass is bent at the position corresponding to the bendable part, the plurality of sub-parts of the bendable part improve the bending performance and reduce the wrinkle deformation, thereby reducing the probability of creases. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 paying creative work.

[0010] Figure 1 A schematic structural diagram of a display screen provided in one embodiment.

[0011] Figure 2 A display screen edge provided in an embodiment Figure 1 Schematic diagram of the cross-sectional structure of line II in FIG.

[0012] Figure 3 A schematic diagram of a cross-sectional structure of a display screen in a folded state provided by one embodiment.

[0013] Figure 4 This is a schematic diagram of the structure of a flexible glass for a display screen provided in one embodiment, wherein the vertical dotted lines in the figure schematically separate multiple sub-portions of the bendable portion.

[0014] Figure 5 A schematic structural diagram of flexible glass for a display screen provided in another embodiment.

[0015] Figure 6 A schematic structural diagram of flexible glass for a display screen provided in yet another embodiment.

[0016] Figure 7 A schematic diagram of a foldable electronic device provided in an embodiment when in a flattened state.

[0017] Figure 8A schematic diagram of another state of a foldable electronic device provided in one embodiment.

[0018] Fig. 9 This is a top view of a foldable electronic device provided in one embodiment, and the dotted line structure in the figure shows the installation position of the hinge mechanism.

[0019] Fig.10 For along Fig. 9 Schematic diagram of the cross-sectional structure of line II-II in FIG.

[0020] Fig.11 for Fig.10 A schematic diagram of the structure of a foldable electronic device in a folded state is shown.

[0021] Fig.12 FIG. 4 is a schematic structural diagram of a foldable electronic device in a folded state according to another embodiment.

[0022] Fig.13 It is a schematic structural diagram of a foldable electronic device in a flattened state according to another embodiment.

[0023] Fig.14 for Fig.13 A schematic diagram of the structure of a foldable electronic device in a folded state is shown.

[0024] Fig.15 FIG. 4 is a schematic structural diagram of a foldable electronic device in a folded state according to another embodiment.

[0025] Fig.16 The diagram is a schematic diagram of the arrangement positions of the first traction member and the second traction member relative to the buffer pad in a foldable electronic device according to one embodiment.

[0026] Fig.17 The figure is a schematic structural diagram of a first traction member of a foldable electronic device according to one embodiment.

[0027] Fig.18 for Fig.17 A schematic diagram of the partial enlarged structure of the first traction member at circle A is shown.

[0028] Reference numerals:

[0029] 100, foldable electronic device; 100a, first connecting member; 100b, second connecting member; 10, middle frame assembly; 12, first shell; 12a, first structural member; 14, second shell; 14a, second structural member; 20, flexible screen; 20a, bendable portion; 20b, first connecting portion; 20c, second connecting portion; 20d, third connecting portion; 20e, fourth connecting portion; 21, flexible display panel; 21a, light emitting surface; 22, flexible glass; 221, first supporting portion; 222, second supporting portion Support portion; 223, sub-portion; 224, groove; 30, shaft mechanism; 31, middle plate; 31a, arc groove; 31b, sink groove; 32, first support member; 33, second support member; 40, traction assembly; 41, first traction member; 41a, first perforation; 411, traction substrate; 412, traction film; 413, adhesive member; 42, second traction member; 42a, second perforation; 50, buffer pad; 60, support sheet; 60a, first adhesive portion; 60b, second adhesive portion; ZZ, bending axis. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0031] As used herein, "foldable electronic device" refers to, but is not limited to, a device capable of receiving and / or sending communication signals connected via any one or more of the following connection methods: (1) via a wired line connection method, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection; (2) via a wireless interface method, such as a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, and an AM-FM broadcast transmitter.

[0032] Foldable electronic devices are electronic devices that are configured to communicate via a wireless interface and can be referred to as "mobile terminals". Examples of mobile terminals include, but are not limited to, the following electronic devices: (1) satellite phones or cellular phones; (2) personal communications system (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communications capabilities; (3) radio telephones, pagers, Internet / intranet access, web browsers, notepads, calendars, personal digital assistants (PDAs) equipped with global positioning system (GPS) receivers; (4) conventional laptop and / or palmtop receivers; (5) conventional laptop and / or palmtop radiotelephone transceivers, etc.

[0033] Combination Figure 1 and Figure 2 As shown, a flexible screen 20 provided in one embodiment of the present application includes a flexible display panel 21 and a flexible glass 22. The flexible display panel 21 has a light emitting surface 21a, which refers to a side of the flexible display panel 21 for emitting light for display. The flexible glass 22 is connected to the flexible display panel 21 and covers the light emitting surface 21a, thereby protecting the flexible display panel 21.

[0034] Based on the fact that the flexible screen 20 can meet the need of folding, the positions of the flexible display panel 21 and the flexible glass 22 that adapt to the folding of the flexible screen 20 are both called "bendable portions 20a", that is, the flexible display panel 21 and the flexible glass 22 both have corresponding bendable portions 20a.

[0035] The flexible glass 22 includes a first support portion 221 and a second support portion 222 connected to each other. In the flexible glass 22, the bendable portion 20a of the flexible glass 22 is connected between the first support portion 221 and the second support portion 222, and the thickness of the first support portion 221 and the second support portion 222 are both greater than the thickness of the bendable portion 20a, so that good bending performance can be obtained at the bendable portion 20a. Accordingly, the first support portion 221 and the second support portion 222 are thicker than the bendable portion 20a, thereby improving the support strength, reducing the probability of failure of the flexible glass 22, and better protecting the flexible display panel 21.

[0036] Understandably, combined Figure 3As shown, when the first support portion 221 and the second support portion 222 are bent at the bendable portion 20a, the position of the flexible display panel 21 corresponding to the bendable portion 20a will also bend accordingly, so that the flexible screen 20 as a whole is bent at the position corresponding to the bendable portion 20a. Accordingly, when the flexible screen 20 is flattened, the bendable portion 20a is flattened and located between the first support portion 221 and the second support portion 222.

[0037] Combination Figure 4 As shown, the bendable portion 20a includes a plurality of sub-portions 223 of unequal thickness, and the thickness of the sub-portion 223 close to the middle of the bendable portion 20a is less than the thickness of the sub-portion 223 away from the middle of the bendable portion 20a, thereby taking into account the rigidity of the connection position between the bendable portion 20a and the first support portion 221 and the second support portion 222, as well as the bending performance at the bendable portion 20a. When the flexible glass 22 is bent at the position corresponding to the bendable portion 20a, the plurality of sub-portions 223 of the bendable portion 20a improve the bending performance and reduce wrinkle deformation, thereby reducing the probability of creases.

[0038] Furthermore, the thickness of the multiple sub-sections 223 of the bendable portion 20a is not only different, but also the thickness of each position of the sub-section 223 can be set to be different. Specifically, for the sub-section 223, the further away from the middle position of the bendable portion 20a, the greater the thickness of the sub-section 223. In this way, the multiple sub-sections 223 of the bendable portion 20a present a gradient shape, which is beneficial to improve the bending performance while reducing the probability of inconsistent brightness at the connection position of the sub-section 223, so as to maintain a good display effect of the flexible screen 20.

[0039] In the present application, the thickness of a structural member refers to the dimension of the structural member in the thickness direction of the flexible screen 20. For structural members of equal thickness, the thickness is the distance from one surface to the other surface. For structures of unequal thickness, the thickness is the average thickness obtained by averaging the thicknesses measured at various positions of the structural member.

[0040] For ease of understanding, the thickness of the first support portion 221 and the second support portion 222 are both greater than the thickness of the bendable portion 20a. The flexible glass 22 is described below from the overall shape. It is understandable that the flexible glass 22 is a soft and bendable ultra-thin glass, and its overall thickness is usually in the micrometer level. Figure 1 and Figure 2As shown, a groove 224 is provided on one side surface of the flexible glass 22, so that the flexible glass 22 has a relative thickening area and a thinning area in thickness. The groove 224 corresponds to the thinning area and extends along a straight line, so that the thickening area is divided into a first support portion 221 and a second support portion 222. The thinning area forms a bendable portion 20a between the first support portion 221 and the second support portion 222. In this way, for the flexible glass 22, the first support portion 221 and the second support portion 222 corresponding to the thickening area are thickened, so that the glass has high strength and is not easy to break, so as to meet the protection needs of the flexible display panel 21. Correspondingly, the bendable portion 20a corresponding to the thinning area adopts a thinning design, thereby reducing the rigidity, so as to improve its bending performance. Since the bendable portion 20a has a plurality of sub-portions 223 of unequal thickness, the thickness of the sub-portion 223 close to the middle of the bendable portion 20a is less than the thickness of the sub-portion 223 away from the middle of the bendable portion 20a. Therefore, the bendable portion 20a has sufficient strength at the position adjacent to the first support portion 221 and the second support portion 222 to reduce the possibility of breakage. At the same time, since the thickness of the sub-portion 223 near the middle of the bendable portion 20a is thinner than the thickness of the sub-portions 223 located on both sides, the bendable portion 20a is easy to bend and the wrinkle deformation is reduced to reduce the possibility of creases.

[0041] The first support portion 221 and the second support portion 222 are both structures of equal thickness, and the thickness of the first support portion 221 and the second support portion 222 are equal. In this way, the flexible glass 22 can achieve uniform support for the flexible display panel 21, avoiding local stress on the flexible display panel 21 due to the different thicknesses of the first support portion 221 and the second support portion 222, thereby helping to improve the service life of the display screen.

[0042] Furthermore, combined with Figure 4 As shown, the thickness of the sub-portion 223 in the middle of the bendable portion 20a is d, the thickness of the first support portion 221 is D, and 1 / 4≤d / D≤3 / 4. After bending tests on the flexible glass 22, it was found that the flexible glass 22 of this embodiment can be bent millions of times without creases.

[0043] The thickness of the first support portion 221 and the second support portion 222 can be set according to the configuration requirements of the flexible screen 20. In some embodiments, the thickness D of the first support portion 221 ranges from 120 μm to 200 μm, for example, D is 120 μm, 150 μm, 180 μm or 200 μm.

[0044] It should be noted that the number of sub-sections 223 in the bendable portion 20a can be 5, 6, or more than 6. The more sub-sections 223 there are, the finer the unequal thickness areas of the bendable portion 20a can be divided, so that the shape of the bendable portion 20a during the bending process is closer to an arc shape, thereby being more conducive to reducing the probability of creases on the bendable portion 20a. For example, in combination with Figure 4 As shown, the bendable portion 20a includes five sub-portions 223, and two sub-portions 223 are respectively arranged on both sides of the sub-portion 223 located in the middle. Figure 5 The bendable portion 20a includes 7 sub-portions 223, and 3 sub-portions 223 are respectively arranged on both sides of the middle sub-portion 223. Of course, in some embodiments, the bendable portion 20a may also include other numbers of sub-portions 223, and the number of sub-portions 223 may be an odd number or an even number, which is not limited here.

[0045] like Figure 5 As shown, the surfaces of the plurality of sub-portions 223 for forming the grooves 224 transition smoothly in sequence, so that no obvious ridges appear between adjacent sub-portions 223. In this way, when the flexible display panel 21 emits light for display, it is not easy for obvious bright spots to appear after the light passes through the position of the bendable portion 20a, so as to maintain a good display effect of the flexible screen 20. At this time, through this arrangement, when external light irradiates the bendable portion 20a, the sub-portion 223 of the bendable portion 20a is not easy to produce stripes of different light and dark, so as to maintain the overall appearance texture of the flexible screen 20.

[0046] It should be noted that, since the bendable portion 20a is formed at the thinning position of the groove 224 on the flexible glass 22, the surface of the bendable portion 20a is concave to form the groove 224. Specifically, the groove 224 is formed due to the different thicknesses of the plurality of sub-portions 223. Based on this, the surface of the plurality of sub-portions 223 for forming the groove 224 refers to the surface of the groove wall of the sub-portion 223 forming the groove 224.

[0047] Continue to combine Figure 5As shown, the sub-portion 223 located in the middle of the bendable portion 20a is of equal thickness, and the surfaces of the other sub-portions 223 forming the groove 224 are all wedge-shaped inclined surfaces. In this embodiment, the slope of the wedge-shaped inclined surface of the sub-portion 223 closer to the middle position of the bendable portion 20a is smaller than the slope of the wedge-shaped inclined surface of the sub-portion 223 farther from the middle position of the bendable portion 20a, so that when the light passes through the bendable portion 20a, it is not easy to have a local bright spot, which is conducive to maintaining the overall display effect of the flexible screen 20. In some embodiments, the farther away from the middle position of the bendable portion 20a, the greater the slope of the surface of the sub-portion 223 for forming the groove 224, so that the multiple sub-portions 223 of the bendable portion 20a present a gradient shape, so as to improve the bending performance while reducing the probability of inconsistent brightness at the connection position of the light passing through the sub-portion 223, so as to maintain a good display effect of the flexible screen 20.

[0048] Further, the inclination angle of the wedge-shaped inclined surface closest to the middle position of the bendable portion 20a is α, and the value range of α is 0.1°≤α≤2°, for example, the value of α is 0.1°, 0.3°, 0.5°, 0.8°, 0.9°, 1.1°, 1.6°, 1.8° or 2°. By testing the display effect and appearance of the flexible glass 22 in the flexible screen 20, it is found that when the value range of the inclination angle α of the wedge-shaped inclined surface closest to the middle position of the bendable portion 20a is set to 0.1°≤α≤2°, the display effect of the flexible screen 20 of the present application is no different from that of the flexible screen 20 of the same thickness, and it is difficult to observe different reflections from the corresponding concave position of the flexible screen 20 of the present application from the appearance. Therefore, the flexible screen 20 of the present application improves the bending performance of the flexible screen 20 and reduces the probability of creases while maintaining stable performance in all aspects.

[0049] Continue to combine Figure 5As shown, in some embodiments, the width of the groove 224 is W, and the width of the sub-portion 223 located in the middle of the bendable portion 20a is w, 1 / 2≤w / W≤3 / 4, so that among the multiple sub-portions 223 corresponding to the groove 224, the width of the sub-portion 223 located in the middle occupies most of the width, so as to improve the bending performance of the bendable portion 20a. It should be noted that in some embodiments, the width W of the groove 224 can be 3mm to 8mm, for example, the width W of the groove 224 is 3mm, 4mm, 5mm, 6mm, 7mm or 8mm. In this way, it is possible to ensure sufficient groove width to improve the bending performance of the flexible glass 22, and to set up enough sub-portions 223 to reduce the probability of generating obvious light spots when light passes through different sub-portions 223; at the same time, the width of the groove 224 will not be too large to increase the cost of groove processing, and a large-format thickening area is reserved to improve the overall strength of the flexible glass 22 and reduce the probability of failure. It should be noted that the glass failure refers to the protective effect of the flexible glass 22 on the flexible display panel 21. If the flexible glass 22 is too thin and too soft, its strength cannot meet the protection needs of the flexible display panel 21. If the flexible glass 22 is too thick and easily breaks when bent, it will also affect its protective effect on the flexible display panel 21. Therefore, in this application, the thickness of the flexible glass 22 as the protective glass for the flexible display panel 21 should be within the thickness range that can adapt to the protection of the flexible display panel 21, and the structural setting of the above-mentioned bendable portion 20a can take into account both strength and bending performance while reducing the probability of creases.

[0050] Furthermore, the width of the sub-portion 223 closer to the middle of the bendable portion 20a is greater than the width of the sub-portion 223 farther from the middle of the bendable portion 20a. Since the thickness of the sub-portion 223 closer to the middle of the bendable portion 20a is less than the thickness of the sub-portion 223 farther from the middle of the bendable portion 20a, the thickness and width of the sub-portion 223 are set so that the thicker the sub-portion 223, the narrower the width, so that the middle position of the bendable portion 20a as a whole has better bending performance relative to the positions on both sides, and the position close to the first support portion 221 and the second support portion 222 has sufficient strength, so that the protective performance of the flexible glass 22 on the flexible display panel 21 is better exerted, while taking into account the bending performance and reducing the probability of creases.

[0051] It should be noted that, in some embodiments, the width of the sub-portion 223 that is closer to the middle position of the bendable portion 20a is larger. Through this structural setting, the multiple sub-portions 223 of the bendable portion 20a can present a gradient shape, thereby taking into account the bending performance of the bendable portion 20a while maintaining a good display effect of the flexible screen 20.

[0052] In some embodiments, surfaces of the plurality of sub-portions 223 for forming the groove 224 are all concave surfaces.

[0053] In some embodiments, in combination Figure 6 As shown, the sub-portion 223 located in the middle of the bendable portion 20a is of equal thickness, and the surfaces of the other sub-portions 223 used to form the groove 224 are all concave surfaces. By setting the concave surfaces, the transition between the multiple sub-portions 223 can be made smoother, which is conducive to the bending of the bendable portion 20a without creases. Furthermore, the curvature of the sub-portion 223 located in the middle of the bendable portion 20a is smaller than the curvature of the sub-portions 223 located on both sides, so as to maintain the connection strength between the bendable portion 20a and the first support portion 221 and the second support portion 222 on both sides, thereby reducing the failure probability of the flexible glass 22.

[0054] See also Figure 7 and Figure 8 As shown, another embodiment of the present application provides a foldable electronic device 100, including the above-mentioned flexible screen 20. The foldable electronic device 100 also includes a hinge mechanism 30, the flexible screen 20 is connected to the hinge mechanism 30, and at least the portion corresponding to the hinge mechanism 30 can be bent. The setting of the hinge mechanism 30 enables the foldable electronic device 100 to be folded or unfolded. Based on the fact that the flexible screen 20 can adapt to the needs of folding and unfolding in the foldable electronic device 100, the flexible glass 22 and the flexible display panel 21 of the flexible screen 20 can be bent at the position corresponding to the hinge mechanism 30. During the folding process of the foldable electronic device 100, the flexible display panel 21 and the flexible glass 22 are both bent at the position corresponding to the bendable portion 20a.

[0055] Combination Figures 9 to 11 As shown, for the convenience of description, when the foldable electronic device 100 is folded for use, the axis about which the flexible screen 20 is bent at the corresponding bendable portion 20a is called the "bending axis ZZ", that is, the flexible screen 20 can be bent around the bending axis ZZ. The "bending axis of the flexible screen 20" and "bending axis of the bendable portion 20a" mentioned below both refer to the bending axis ZZ. It can be understood that the hinge mechanism 30 is opposite to the bendable portion 20a, and the folding axis of the hinge mechanism 30 is parallel to the bending axis ZZ of the bendable portion 20a. When the hinge mechanism 30 rotates, it drives the position of the flexible screen 20 corresponding to the bendable portion 20a to flatten or fold.

[0056] For ease of understanding, the relatively folded parts of the flexible screen 20 are referred to as the "first screen body" and the "second screen body" respectively. It can be understood that when the flexible screen 20 is flattened, the first screen body and the second screen body are correspondingly located on opposite sides of the bendable portion 20a, so that during the folding process of the flexible screen 20 corresponding to the bendable portion 20a, the first screen body and the second screen body are folded toward each other.

[0057] The flexible screen 20 includes a first connection portion 20b and a second connection portion 20c, wherein the first connection portion 20b is disposed on a side of the first screen body facing away from the flexible glass, and the second connection portion 20c is disposed on a side of the second screen body facing away from the flexible glass. The hinge mechanism 30 is connected to the first connection portion 20b and the second connection portion 20c, and when the hinge mechanism 30 rotates, the hinge mechanism 30 drives the flexible screen 20 to move between a flattened state and a folded state.

[0058] Combination Fig.10 and Fig.11 As shown, the foldable electronic device 100 further includes a traction component 40, which is connected to the side of the flexible screen 20 facing the hinge mechanism 30. When the flexible screen 20 moves toward the folded state, the hinge mechanism 30 pulls the bendable portion 20a toward the first connection portion 20b and the second connection portion 20c through the traction component 40. In this embodiment, since the traction component 40 can pull the bendable portion 20a toward the first connection portion 20b and the second connection portion 20c, that is, the traction component 40 will generate a traction force on the bendable portion 20a, and the portion where the traction force acts on the bendable portion 20a will move toward the first connection portion 20b and the second connection portion 20c, so that the bendable portion 20a is deformed and becomes closer to a circle. Based on this, while reducing the bending profile of the bendable portion 20a to achieve miniaturization, the pulling of the bendable portion 20a by the traction assembly 40 can make the bending arc of the bendable portion 20a smoother, thereby reducing the probability of creases on the bendable portion 20a and improving the reliability of the flexible screen 20.

[0059] It should be noted that the bendable portion 20a is in a teardrop shape when in a folded state. Exemplarily, in some embodiments, the hinge mechanism 30 includes a middle plate 31 and a first support member 32 and a second support member 33 connected to both sides of the middle plate 31, and the first support member 32 and the second support member 33 can rotate relative to the middle plate 31 to flatten or fold the bendable portion 20a. When the bendable portion 20a is in a folded state, the first support member 32 and the second support member 33 form a storage space with the middle plate 31, and the bendable portion 20a is folded in the storage space. In this embodiment, the first support member 32 and the second support member 33 are used to squeeze the flexible screen 20, so that the bendable portion 20a is in a teardrop shape.

[0060] When the bendable portion 20a is in a flattened state, the first support member 32 and the second support member 33 support the flexible screen 20, so that the flexible screen 20 has good flatness to obtain a good display effect.

[0061] See again Figure 7 and Figure 8As shown, the foldable electronic device 100 includes a middle frame assembly 10, and the middle frame assembly 10 includes a first shell 12 and a second shell 14. The hinge mechanism 30 is connected between the first shell 12 and the second shell 14, so that the first shell 12 and the second shell 14 can rotate relative to each other. It can be understood that the flexible screen 20 is connected to the first shell 12 and the second shell 14, and the position of the foldable flexible screen 20 corresponding to the bendable portion 20a of the hinge mechanism 30 covers the hinge mechanism 30 to maintain the overall aesthetic appearance of the foldable electronic device 100. The first shell 12 and the flexible screen 20 can be connected by a first structural member 12a, and the second shell 14 and the flexible screen 20 can be connected by a second structural member 14a. The first structural member 12a and the second structural member 14a can be a glue layer or a screw, which is not limited here.

[0062] The middle frame assembly 10 forms a receiving cavity (not shown), and the foldable electronic device 100 may also include a circuit board (not shown) and a battery (not shown), and both the circuit board and the battery may be arranged in the receiving cavity of the middle frame assembly 10. The circuit board may integrate the processor, power management module, storage unit, baseband chip, etc. of the foldable electronic device 100. The flexible screen 20 is communicatively connected to the processor, and the battery can power the flexible screen 20 and the electronic components on the circuit board. In some embodiments, the foldable electronic device 100 may also include a camera module (not shown), which is communicatively connected to the circuit board, and the battery can power the camera module. It is understandable that the foldable electronic device 100 of the embodiment of the present application includes but is not limited to terminal devices such as mobile phones and tablet computers or other portable foldable electronic devices 100.

[0063] Combination Fig.10 and Fig.11 As shown, the traction assembly 40 includes a first traction member 41 and a second traction member 42. One end of the first traction member 41 is connected to the first support member 32, and the other end is connected to the flexible screen 20. One end of the second traction member 42 is connected to the second support member 33, and the other end is connected to the flexible screen 20. In this embodiment, the first traction member 41 and the second traction member 42 respectively pull the parts of the bendable portion 20a corresponding to the two sides of the bending axis ZZ, which can not only realize the change of the bendable portion 20a to a circular contour, but also easily balance the forces on both sides of the bendable portion 20a, so that the bendable portion 20a is not easily biased to one side of the first support member 32 and the second support member 33 due to uneven force.

[0064] Further, see Fig.11As shown, based on the fact that the bendable portion 20a is in a teardrop shape when folded, the point of action of the traction component 40 (such as the first traction member 41 and the second traction member 42) applying the lifting force to the bendable portion 20a can be located in the lower half of the teardrop shape, so that the first traction member 41 and the second traction member 42 have a better lifting effect on the bendable portion 20a. Specifically, the position where the first traction member 41 is connected to the flexible screen 20 corresponds to the side of the widest part MW of the teardrop shape of the bendable portion 20a in the folded state close to the bending vertex G. At this time, when the foldable electronic device 100 is folded upward on a vertical plane, the position where the first traction member 41 is connected to the flexible screen 20 corresponds to the lower part of the widest part MW of the teardrop shape of the bendable portion 20a. At this time, the bendable portion 20a can be better lifted by the first traction member 41, so that the bendable portion 20a is more inclined to be rounded. It should be noted that the widest part MW of the water drop shape refers to the position corresponding to the maximum dimension of the bendable portion 20a in the thickness direction of the foldable electronic device 100 in the folded state; accordingly, the bending vertex G refers to the position corresponding to the minimum dimension of the bendable portion 20a in the thickness direction of the foldable electronic device 100 in the folded state, that is, the position of the maximum curvature of the bendable portion 20a.

[0065] The position where the second traction member 42 is connected to the flexible screen 20 is located on the side of the widest part MW of the water drop shape of the bendable part 20a in the folded state, close to the bending vertex G, so that the lifting effect of the second traction member 42 on the bendable part 20a can be improved, so that the bendable part 20a is more inclined to be round. The flexible screen 20 is provided with a third connection part 20d, and the first traction member 41 is connected to the first connection part 20b and the third connection part 20d. In this way, during the folding process of the bendable part 20a, the first traction member 41 will bend together. Since the first traction member 41 is located on the side of the bendable part 20a facing the rotating shaft mechanism 30, the first traction member 41 will generate a pulling force to bring the first connection part 20b and the third connection part 20d closer to each other, so that the bendable part 20a is deformed accordingly, so that the bendable part 20a can be adjusted from a flat water drop shape to a shape closer to a circle, so as to reduce the probability of creases on the bendable part 20a.

[0066] In this embodiment, the third connection part 20d is the connection position between the first traction member 41 and the flexible screen 20, and is also the force point when the first traction member 41 exerts a pulling effect on the bendable part 20a of the flexible screen 20. Therefore, the third connection part 20d can be set at the position where the flexible screen 20 is connected, and is set on the side close to the bending vertex G of the widest part MW of the water drop shape of the bendable part 20a in the folded state, so as to further enhance the pulling effect of the first traction member 41 on the bendable part 20a, so that the bendable part 20a of the flexible screen 20 is more inclined to be rounded. Fig.10As shown, in this embodiment, when the bendable portion 20a is in the flattened state, the first traction member 41 and the structural gap between the first connecting portion 20b and the third connecting portion 20d of the bendable portion 20a are set. This can not only reduce the probability of the first traction member 41 contacting the bendable portion 20a during the bending process, but also even if the first traction member 41 contacts the flexible screen 20 during the bending process, the existence of the gap between them can also reduce the contact stress between the two when they contact, so as to reduce the probability of damage to the flexible screen 20. In addition, the gap setting between the first traction member 41 and the flexible screen 20 can also increase the traction force of the first traction member 41 on the bendable portion 20a during the bending process, making it easier to make the bendable portion 20a round. For the sake of convenience, here we take the example of the first traction member 41 being attached to the surface of the bendable portion 20a. Since the gap between the first traction member 41 and the flexible screen 20 is almost zero at this time, the deformation amount generated during the bending process of the bendable portion 20a is consistent with the first traction member 41. In this way, the traction force generated by the first traction member 41 on the bendable portion 20a is zero or close to zero. At this time, the first traction member 41 cannot produce a lifting effect on the bendable portion 20a. Accordingly, the first traction member 41 and the bendable portion 20a are set to maintain a gap. During the bending process, due to the different bending deformation amounts between the two, the first traction member 41 will produce a lifting effect on the bendable portion 20a, making the bendable portion 20a rounded and reducing the probability of creases on the bendable portion 20a.

[0067] Furthermore, when the bendable portion 20a is in the flattened state, the gap between the first traction member 41 and the flexible screen 20 is less than or equal to 3 times the thickness of the first traction member 41. Within the gap range, the traction force of the first traction member 41 on the flexible screen 20 is appropriate, so that the traction force generated by the first traction member 41 is not too large and it is easy to be pulled off the flexible screen 20, or even the structure of the flexible screen 20 is damaged. In addition, under this setting, the traction force of the first traction member 41 on the flexible screen 20 is not too small, resulting in inconspicuous deformation of the bendable portion 20a.

[0068] When the bendable portion 20a is in the flattened state, the distance between the first connection portion 20b and the third connection portion 20d is 1 / 3 to 1 / 2 of the flattened length of the bendable portion 20a of the flexible screen 20. The portion of the flexible screen 20 between the first connection portion 20b and the third connection portion 20d is the main deformation portion under the action of the first traction member 41, and it is set to occupy 1 / 3 to 1 / 2 of the flattened length of the bendable portion 20a of the flexible screen 20. This can not only achieve a significant deformation amount at the position of the bendable portion 20a of the flexible screen 20, but also prevent the local portion of the flexible screen 20 corresponding to the bendable portion 20a from being damaged due to excessive stress.

[0069] It should be noted that, in the present application, the flattened length of the bendable portion 20a is the length of the first shell 12 and the second shell 14 of the foldable electronic device 100 in the flattened state corresponding to the bendable portion 20a of the flexible screen 20, that is, Fig.10 In the horizontal direction of the foldable electronic device 100 shown, the distance between the two ends of the flexible screen 20 corresponding to the bendable portion 20a. The two ends of the flexible screen 20 corresponding to the bendable portion 20a are respectively connected to the first connection portion 20b and the second connection portion 20c, so the flattened length of the flexible screen 20 corresponding to the bendable portion 20a is the distance between the first connection portion 20b and the second connection portion 20c.

[0070] In some embodiments, the second traction member 42 is connected to the position of the flexible screen 20 corresponding to the bendable portion 20a in a similar connection manner as the first traction member 41. Fig.10 and Fig.11 As shown, the bendable portion 20a is provided with a fourth connection portion 20e, the second traction member 42 is connected to the second connection portion 20c and the fourth connection portion 20e, and when the flexible screen 20 is in a flattened state corresponding to the bendable portion 20a, the second traction member 42 and the structural gap between the second connection portion 20c and the fourth connection portion 20e of the flexible screen 20 are set. The benefits of this setting can be referred to the setting of the first traction member 41, and will not be repeated here. Correspondingly, in this embodiment, when the flexible screen 20 is in a flattened state corresponding to the bendable portion 20a, the gap between the second traction member 42 and the flexible screen 20 is less than or equal to 3 times the thickness of the second traction member 42. The fourth connection portion 20e serves as the connection position between the second traction member 42 and the flexible screen 20, and is also the force application point when the second traction member 42 produces a pulling effect on the bendable portion 20a corresponding to the flexible screen 20. Therefore, the position where the fourth connecting part 20e is connected to the flexible screen 20 can be set on the side close to the bending vertex G of the widest part MW of the water drop shape of the bendable part 20a in the folded state, further enhancing the lifting effect of the second traction member 42 on the bendable part 20a, making the bendable part 20a more circular.

[0071] In some embodiments, when the bendable portion 20a is in a flattened state, the distance between the second connection portion 20c and the fourth connection portion 20e is 1 / 3 to 1 / 2 of the flattened length of the bendable portion 20a of the flexible screen 20. In this embodiment, the portion of the flexible screen 20 between the second connection portion 20c and the fourth connection portion 20e is used as the main deformation portion under the action of the second traction member 42, and it is set to occupy 1 / 3 to 1 / 2 of the flattened length of the bendable portion 20a of the flexible screen 20, which can not only realize the obvious deformation of the bendable portion 20a of the flexible screen 20, but also avoid the local stress of the bendable portion 20a of the flexible screen 20 being excessively damaged.

[0072] Combination Fig.11 As shown, the first connection portion 20b and the second connection portion 20c are symmetrically arranged with respect to the virtual plane, the first support member 32 and the second support member 33 are symmetrically arranged with respect to the virtual plane, and the first traction member 41 and the second traction member 42 are symmetrically arranged with respect to the virtual plane, wherein the central symmetry plane of the bendable portion 20a in the folded state defines the virtual plane. The bendable portion 20a is symmetrical with respect to the virtual plane in the folded state. In this embodiment, the symmetrical arrangement is conducive to maintaining the force balance on both sides of the folding position of the foldable electronic device 100, and this symmetrical structural arrangement can also reduce the complexity of the structure to facilitate assembly.

[0073] Combination Fig.10 and Fig.11 As shown, a clearance groove is provided on the middle plate 31, and the extension direction of the clearance groove is parallel to the bending axis ZZ of the bendable portion 20a. When the bendable portion 20a is in the folded state, the position of the bendable portion 20a closest to the middle plate 31 is opposite to the clearance groove, so that the clearance groove can be used to form a clearance, thereby reducing the contact stress between the bendable portion 20a and the middle plate 31 in the folded state.

[0074] The air escape groove includes an arc groove 31a and a sink groove 31b at the bottom of the arc groove 31a, and the depth of the sink groove 31b is less than or equal to the depth of the arc groove 31a. In this embodiment, the sink groove 31b is used to further improve the stress concentration of the bendable portion 20a in the folded state, so that the bendable portion 20a is not easily damaged by stress concentration.

[0075] In the present application, the arc groove 31a refers to a clearance groove whose cross section of the groove wall is arc-shaped. It should be noted that the arc groove 31a can also be omitted. For example, in combination Fig.12 As shown, the air-avoiding groove on the middle plate 31 is a sink groove 31b. In addition, the cross-sectional shape of the air-avoiding groove can be an arc or a rectangle, which is not limited here.

[0076] A buffer pad 50 is provided on one side of the middle plate 31 facing the bendable portion 20a, and the buffer pad 50 covers part of the air-avoiding groove. When the bendable portion 20a presses against the buffer pad 50 to deform, part of the structure of the buffer pad 50 is accommodated in the air-avoiding groove. In this embodiment, the buffer pad 50 is used to further reduce the contact stress between the bendable portion 20a and the middle plate 31, thereby helping to reduce the probability of damage to the bendable portion 20a.

[0077] The buffer pad 50 may be one, or may be two or more. It should be noted that when there are two or more buffer pads 50, they may be arranged in pairs on opposite sides of the air-avoiding groove, so as to provide a buffering protection effect on the bendable portion 20a. At the same time, even if the bendable portion 20a contacts the buffer pad 50 in the folded state, the buffer pad 50 can enter the air-avoiding groove without causing damage to the bendable portion 20a. The buffer pads 50 arranged in pairs may be cut by die cutting, and there may be no obvious gap between the buffer pads 50 on both sides of the air-avoiding groove, or the gap may be less than or equal to 1 mm.

[0078] Combination Fig.13 and Fig.14 As shown, in some embodiments, the flexible screen 20 includes a support sheet 60 arranged corresponding to the bendable portion 20a, the traction component 40 is connected to the support sheet 60, and when the bendable portion 20a is in a folded state, the traction component 40 pulls the bendable portion 20a by pulling the support sheet 60.

[0079] In an embodiment where the flexible screen 20 includes a support sheet 60, the position of the support sheet 60 for connecting to the traction assembly 40 can define a third connection portion 20d and a fourth connection portion 20e, that is, in this embodiment, the third connection portion 20d and the fourth connection portion 20e can be located on the support sheet 60 of the flexible screen 20.

[0080] In this embodiment, when the bendable portion 20a is in a flattened state, the support sheet 60 applies tension to the bendable portion 20a toward the first connecting portion 20b and the second connecting portion 20c, so that the adhesive and film materials that have not recovered after creep in the layer structure of the bendable portion 20a are flattened and stretched to improve the light and shadow of the flexible screen 20 and reduce creases. Since the traction component 40 can pull the support sheet 60 so that the support sheet 60 pulls the bendable portion 20a, and the support sheet 60 itself has good bending performance, when the support sheet 60 pulls the bendable portion 20a, the pulling force can be uniformly applied to the bendable portion 20a, so as to maintain the overall structural stability of the bendable portion 20a. In some embodiments, the elastic modulus of the support sheet 60 is greater than or equal to 100Gpa, so that the support sheet 60 has good elasticity and has the effect of flattening the bendable portion 20a.

[0081] like Fig.13As shown, the first adhesive portion 60a and the second adhesive portion 60b are respectively provided at the opposite ends of the support sheet 60. The first adhesive portion 60a and the second adhesive portion 60b can be adhesive layers to facilitate bonding the support sheet 60 to the flexible screen 20. The connection method between the support sheet 60 and the flexible screen 20 is not limited here. For example, the first adhesive portion 60a and the second adhesive portion 60b used to connect the support sheet 60 to the flexible screen 20 can also be replaced by a first component and a second component that realize a connection method such as screw connection or clamping, that is, the first component and the second component respectively connect the two ends of the support sheet 60 to the flexible screen 20.

[0082] Furthermore, the traction component 40 (such as the first traction member 41 and the second traction member 42) is connected to the side of the support sheet 60 facing away from the bendable portion 20a, and the position where the traction component 40 is connected to the support sheet 60 (such as the third connection portion 20d and the fourth connection portion 20e) is located between the first component (such as the first bonding portion 60a) and the second component (such as the second bonding portion 60b), so that the traction component 40 can better lift the support sheet 60, so that the support sheet 60 together with the bendable portion 20a is deformed, so as to facilitate the bendable portion 20a to bend more circularly.

[0083] like Fig.14 As shown, the first traction member 41 and the first support member 32 may be connected to the same first connection portion 20b. Fig.15 As shown, the first traction member 41 and the second support member 33 can be connected to different positions of the flexible screen 20. Exemplarily, the flexible screen 20 is provided with two or more first connection parts 20b arranged at intervals, and the first traction member 41 and the second support member 33 are respectively connected to different first connection parts 20b. Correspondingly, the second traction member 42 and the second support member 33 can be connected to the same second connection part 20c, or can be respectively connected to different second connection parts 20c. The connection position of the first traction member 41 and the second traction member 42 is not limited here. As long as the rotating shaft mechanism 30 drives the flexible screen 20 to fold to the position corresponding to the bendable part 20a, the rotating shaft mechanism 30 can lift the bendable part 20a through the first traction member 41 and the second traction member 42. Exemplarily, in combination Fig.10 and Fig.16 As shown, the first traction member 41 may be provided with a first through hole 41a, and the foldable electronic device 100 includes a first connecting member 100a, which is provided through the first through hole 41a and connects the first support member 32 with the first connecting portion 20b. The second traction member 42 may be provided with a second through hole 42a, and the foldable electronic device 100 includes a second connecting member 100b, which is provided through the second through hole 42a and connects the second support member 33 with the second connecting portion 20c.

[0084] The structures of the first traction member 41 and the second traction member 42 may be the same or different. Fig.17 and Fig.18 As shown, the first traction member 41 includes a traction substrate 411 and a traction film 412, and the traction film 412 is connected to the traction substrate 411. Among them, the traction substrate 411 plays the role of supporting the traction film 412 and elastic reset, and the traction substrate 411 has sufficient rigidity. The elastic modulus of the traction substrate 411 is greater than or equal to 100GPa. The traction film 412 has good flexibility so that it can be deformed after being attached to the bendable portion 20a, and can apply elastic pulling effect to the bendable portion 20a in the bent state. The traction film 412 can be made of holes to enhance its deformation ability, and the elastic modulus of the traction film 412 is 5GPa to 200GPa, such as 5GPa, 45GPa, 95GPa, 115GPa, 145GPa, 180GPa or 200GPa. In some embodiments, the traction film 412 may also be made of no holes to achieve a non-porous design. In this case, the traction film 412 can be made of a material with an elastic modulus lower than 5GPa. The materials of the traction base material 411 and the traction film 412 are not limited herein.

[0085] In the embodiment where the first traction member 41 includes a traction substrate 411, the first perforation 41a may be provided in the traction substrate 411. The first traction member 41 includes an adhesive member 413, which is connected to the traction film 412 and is used to connect the traction film 412 to the flexible screen 20. The adhesive member 413 includes but is not limited to an adhesive layer or a double-sided tape.

[0086] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the inventive concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A flexible glass, characterized in that: It includes a first supporting portion, a second supporting portion and a bendable portion connected between the first supporting portion and the second supporting portion, the thickness of the first supporting portion and the second supporting portion are both greater than the thickness of the bendable portion, the bendable portion has a plurality of sub-portions of unequal thickness, and the thickness of the sub-portion close to the middle of the bendable portion is less than the thickness of the sub-portion away from the middle of the bendable portion.

2. The flexible glass according to claim 1, characterized in that: A groove is provided on one side surface of the flexible glass, so that the flexible glass has relative thickened area and thinned area in thickness, the groove corresponds to the thinned area and extends along a straight line, so that the thickened area is divided into the first supporting part and the second supporting part, and the thinned area forms the bendable part between the first supporting part and the second supporting part.

3. The flexible glass according to claim 1 or 2, characterized in that: The first supporting portion and the second supporting portion are both equal-thickness structures, and the first supporting portion and the second supporting portion have the same thickness.

4. The flexible glass according to claim 3, characterized in that: The thickness of the sub-portion located in the middle of the bendable portion is d, the thickness of the first supporting portion is D, and 1 / 4≤d / D≤3 / 4.

5. The flexible glass according to claim 4, characterized in that: The value range of D is 120μm~200um.

6. The flexible glass according to claim 2, characterized in that: Surfaces of the plurality of sub-portions for forming the groove transition smoothly in sequence.

7. The flexible glass according to claim 6, characterized in that: The surfaces of the plurality of sub-parts used to form the grooves are all concave surfaces; Alternatively, the sub-portion located in the middle of the bendable portion is a structure of equal thickness, and the surfaces of the other sub-portions used to form the groove are all concave surfaces.

8. The flexible glass according to claim 7, characterized in that: The curvature of the sub-portion located in the middle of the bendable portion is smaller than the curvature of the sub-portions located at both sides.

9. The flexible glass according to claim 6, characterized in that: The sub-portion located in the middle of the bendable portion is a structure of equal thickness, and the surfaces of the other sub-portions that form the groove are all wedge-shaped inclined surfaces, and the slope of the wedge-shaped inclined surface of the sub-portion closer to the middle position of the bendable portion is smaller than the slope of the wedge-shaped inclined surface of the sub-portion farther from the middle position of the bendable portion.

10. The flexible glass according to claim 9, characterized in that: The inclination angle of the wedge-shaped inclined surface closest to the middle position of the bendable portion is α, and the value range of α is 0.1°≤α≤2°.

11. The flexible glass according to claim 8 or 9, characterized in that: The width of the groove is W, the width of the sub-portion located in the middle of the bendable portion is w, 1 / 2≤w / W≤3 / 4; And / or, the width of the sub-portion closer to the middle position of the bendable portion is greater than the width of the sub-portion farther from the middle position of the bendable portion.

12. A flexible screen, characterized in that: It comprises a flexible display panel and the flexible glass as described in any one of claims 1 to 11, wherein the flexible display panel has a light emitting surface, and the flexible glass is connected to the flexible display panel and covers the light emitting surface.

13. A foldable electronic device, characterized in that: It includes a hinge mechanism and a flexible screen as described in claim 12, wherein the hinge mechanism is connected to the flexible screen, and the hinge mechanism is opposite to the bendable portion of the flexible glass of the flexible screen, and the hinge mechanism is used to drive the position of the flexible screen corresponding to the bendable portion to flatten or fold when rotating.

14. The foldable electronic device according to claim 13, characterized in that: The flexible screen includes a first screen body and a second screen body corresponding to opposite sides of the bendable part, and the first screen body and the second screen body are respectively provided with a first connecting part and a second connecting part on the side facing away from the flexible glass, and the hinge mechanism is connected to the first connecting part and the second connecting part; the foldable electronic device also includes a traction component, which is connected to the side of the flexible screen facing the hinge mechanism, and when the flexible screen moves toward the folded state, the hinge mechanism pulls the bendable part toward the first connecting part and the second connecting part via the traction component.

15. The foldable electronic device according to claim 14, characterized in that: The bendable portion is in a teardrop shape when in a folded state, and the point where the traction component applies pulling action on the bendable portion is located at the lower half of the teardrop shape.

16. The foldable electronic device according to claim 14 or 15, characterized in that: The hinge mechanism includes a middle plate and a first support member and a second support member connected to both sides of the middle plate, the first support member and the second support member can rotate relative to the middle plate to flatten or fold the flexible screen; when the flexible screen is in a folded state, the first support member and the second support member form a storage space with the middle plate, and the bendable portion is stored in the storage space, and when the flexible screen is in a flattened state, the first support member and the second support member support the flexible screen.

17. The foldable electronic device according to claim 16, characterized in that: The traction assembly includes a first traction member and a second traction member, one end of the first traction member is connected to the first support member, and the other end is connected to the flexible screen; one end of the second traction member is connected to the second support member, and the other end is connected to the flexible screen.

18. The foldable electronic device according to claim 17, characterized in that: The flexible screen is provided with a third connecting portion, the first traction member is connected to the first connecting portion and the third connecting portion, and when the flexible screen is in a flattened state, a structural gap is set between the first traction member and the flexible screen between the first connecting portion and the third connecting portion.

19. The foldable electronic device according to claim 18, characterized in that: When the flexible screen is in a flattened state, a gap between the first traction member and the flexible screen is less than or equal to 3 times the thickness of the first traction member; And / or, when the flexible screen is in a flattened state, the distance between the first connecting portion and the third connecting portion is 1 / 3 to 1 / 2 of the flattened length of the bendable portion.

20. The foldable electronic device according to claim 17, characterized in that: The first connecting portion and the second connecting portion are symmetrically arranged with respect to a virtual plane, the first supporting member and the second supporting member are symmetrically arranged with respect to the virtual plane, and the first traction member and the second traction member are symmetrically arranged with respect to the virtual plane, wherein the virtual plane is the central symmetry plane of the bendable portion when it is in a folded state.

21. The foldable electronic device according to claim 14, characterized in that: The flexible screen includes a support sheet located at the bendable portion, the traction assembly is connected to the support sheet, and when the flexible screen is in a folded state, the traction assembly pulls the bendable portion by pulling the support sheet, and when the flexible screen is in a flattened state, the support sheet applies tension to the bendable portion toward the first connecting portion and the second connecting portion.

22. The foldable electronic device according to claim 21, characterized in that: The support sheet is provided with a first component and a second component at both ends respectively, and the first component and the second component are both connected to the flexible screen. The traction component is connected to the side of the support sheet facing away from the bendable portion, and the position where the traction component is connected to the support sheet is located between the first component and the second component.

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