Electronic device, display screen assembly, and rotating shaft mechanism

Abstract

The present application provides an electronic device, a display screen assembly, and a rotating shaft mechanism. The electronic device comprises: a display screen, a support member, a bonding structure, and a rotating shaft mechanism which are stacked; the support member is provided on the side facing away from a light-emitting surface of the display screen; the support member comprises: a bending portion, a first support portion, and a second support portion, wherein the bending portion comprises a first area; the rotating shaft mechanism comprises a rotating shaft hinge panel; the rotating shaft hinge panel comprises a second area corresponding to the first area; the bonding structure comprises: a first adhesive layer and a second adhesive layer which are stacked; a recess is provided in the first area, or a recess is provided in the second area, or a recess is provided in each of the first area and the second area; the first adhesive layer is provided in the recess; and the second adhesive layer is provided between the first area and the second area. In this way, the first adhesive layer is provided in the recess, without occupying the space of a gap between the support member and the rotating shaft hinge panel, thereby facilitating lightweight and thinness of a device and reducing the effect of the first adhesive layer on the touch performance and flatness of the display screen.

Description

Electronic devices, display components and hinge mechanisms

[0001] This application claims priority to Chinese patent application filed on October 30, 2024, with application number 202411538965.6 and entitled "Electronic device, display assembly and hinge mechanism", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, and more particularly to an electronic device, a display screen assembly, and a hinge mechanism. Background Technology

[0003] With the continuous development of display technology, foldable display terminals are gradually becoming a development trend for future mobile electronic products. When unfolded, foldable display terminals offer a larger display area, enhancing the viewing experience. When folded, they achieve a smaller size, making them easy for users to carry.

[0004] Currently, teardrop-shaped foldable display terminals are widely used. Their support components include a flat support part and a bending part. There can be a certain gap between the bending part and the pivot mechanism, and they are not glued to each other. They can freely contact or rub slightly. However, when the bending part and the pivot mechanism are not glued to each other, it is easy to cause the display screen to arch and fail.

[0005] The bending part can also be connected to the hinge mechanism through an adhesive layer, but the different fixing methods between the folding screen and the hinge will greatly affect the bending reliability of the folding screen. When the adhesive layer uses back adhesive, the back adhesive is thicker and has less adhesion, which is not conducive to the thinning of the device. When the adhesive layer uses dispensing, the dispensing hardness is higher, which can easily lead to local unevenness. Summary of the Invention

[0006] This application provides an electronic device, a display assembly, and a hinge mechanism, which solves the problem that the connection between the hinge mechanism and the support member cannot simultaneously ensure stability and flatness.

[0007] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0008] A first aspect of this application provides an electronic device, comprising: a display screen, a support member, an adhesive structure, and a hinge mechanism stacked together; the support member is disposed on a side opposite to the light-emitting surface of the display screen; the support member includes: a bending portion, a first support portion, and a second support portion; when the display screen is in a flattened state, the bending portion is located between the first support portion and the second support portion, and the bending portion is disposed opposite to the hinge mechanism; the bending portion includes a first region; the hinge mechanism includes a second region opposite to the first region; the adhesive structure includes: a first adhesive layer and a second adhesive layer stacked together, the first region and / or the second region having a groove, the first adhesive layer being disposed in the groove, and the second adhesive layer being disposed between the first region and the second region. Thus, the first adhesive layer being disposed in the groove does not occupy the space between the support member and the hinge mechanism, which is beneficial for the thinness and lightness of the device, and reduces the impact of the first adhesive layer on the touch feel and flatness of the display screen. The first adhesive layer can be formed by dispensing, and it has a higher modulus and hardness, resulting in higher connection stability and improved flatness and rigidity of the flexible display screen. The second adhesive layer uses materials such as foam adhesive, which has a lower modulus and provides cushioning performance.

[0009] In one optional implementation, the groove includes: a first groove disposed in a first region; the first adhesive layer includes: a first sub-part disposed in the first groove; and a second adhesive layer is disposed, for example, between the first sub-part and the second region of the first adhesive layer. The first region can be connected by the first sub-part, the second adhesive layer, and the second region.

[0010] When preparing the adhesive structure, the adhesive can be applied or dripped into the first groove by dispensing to pre-cur the adhesive and form the first sub-part of the first adhesive layer in the first groove. The backing adhesive is then bonded to the second area as the second adhesive layer. Next, the first sub-part of the first adhesive layer and the second adhesive layer are bonded together and the first sub-part of the first adhesive layer is cured again.

[0011] In one alternative implementation, the groove includes a second groove disposed in a second region, and the first adhesive layer includes a second sub-part disposed in the second groove. The second adhesive layer is disposed, for example, between the second sub-part of the first adhesive layer and the first region, and the first region can be connected by the second adhesive layer, the second sub-part of the first adhesive layer, and the second region.

[0012] When preparing the adhesive structure, the adhesive can be applied or dripped into the second groove by dispensing to pre-cur the adhesive, forming the second sub-part of the first adhesive layer in the second groove. The backing adhesive is then bonded to the first area as the second adhesive layer. Next, the second sub-part of the first adhesive layer and the second adhesive layer are bonded together, and the second sub-part of the first adhesive layer is cured again.

[0013] In one optional implementation, the groove includes a first groove and a second groove. The first groove is disposed in a first region, and the second groove is disposed in a second region. The first adhesive layer includes a first sub-part and a second sub-part. The first sub-part is disposed in the first groove, and the second sub-part is disposed in the second groove. The first sub-part, the second adhesive layer, and the second sub-part of the first adhesive layer are stacked, with the first sub-part of the first adhesive layer connected to the second adhesive layer, and the second adhesive layer connected to the second sub-part of the first adhesive layer. Thus, the first region and the second region are sequentially connected through the first sub-part of the first adhesive layer, the second adhesive layer, and the second sub-part of the first adhesive layer.

[0014] When preparing the adhesive structure, the adhesive can first be applied or dripped into the first groove by dispensing to pre-cur the adhesive as the first sub-part of the first adhesive layer. The adhesive can then be applied or dripped into the second groove as the second sub-part of the first adhesive layer. The backing adhesive is then bonded to the first or second region as the second adhesive layer. Next, the first sub-part of the first adhesive layer, the second adhesive layer, and the second sub-part of the first adhesive layer are bonded together, and the first and second sub-parts of the first adhesive layer are cured again.

[0015] In one alternative implementation, the first adhesive layer is formed by dispensing. This reduces the difficulty of forming the adhesive.

[0016] In one alternative implementation, the material of the first adhesive layer includes at least one of the following: UV-curable adhesive, hot melt adhesive, silicone, two-component adhesive, epoxy resin adhesive, and OCR optical adhesive.

[0017] In one alternative implementation, the second adhesive layer includes: backing adhesive, foam adhesive, double-sided adhesive, and OCA optical adhesive. Thus, the second adhesive layer uses solid adhesive for direct bonding, reducing the complexity of the manufacturing process.

[0018] In one optional implementation, the first surface of the first adhesive layer and the second surface of the second adhesive layer are connected, and the second surface of the second adhesive layer is provided with a first uneven structure. This increases the contact area between the first and second adhesive layers, thereby improving the bonding strength between them.

[0019] In one optional implementation, a second uneven structure adapted to the first uneven structure is provided on the first surface of the first adhesive layer. Therefore, the first adhesive layer has fluidity when joined with the second adhesive layer, and a second uneven structure adapted to the surface of the second adhesive layer can be formed on the surface of the first adhesive layer, further increasing the bonding force between the first adhesive layers.

[0020] In one optional implementation, the electronic device further includes an adhesive overflow tray disposed in the first region and / or the second region, and adjacent to the groove. Thus, the adhesive overflow tray can be used to contain the adhesive overflowing from the first adhesive layer, preventing the adhesive from overflowing outside the bonding area and reducing the impact of adhesive overflow on the flatness or bending reliability of the display screen.

[0021] In one alternative implementation, the overflow groove is arranged around the recess. This allows for the overflow groove to be provided around the recess, better accommodating the overflowing adhesive.

[0022] In one optional implementation, the electronic device further includes a metal plate disposed between the bending portion and the pivot mechanism. The metal plate comprises a first portion and a second portion connected together. The first portion is disposed between a first adhesive layer and a second adhesive layer. When the display screen is bent, the metal plate bends accordingly, and the second portion can slide relative to the support member. Thus, the metal plate can provide support for the display screen, improving the compression resistance and drop reliability of the bending area of ​​the display screen, and helping to reduce creases in the display screen.

[0023] In one alternative implementation, the first portion is connected to the first adhesive layer and / or the second adhesive layer. Thus, this adhesive structure can be used not only to connect the rotating shaft mechanism and the support member, but also to fix the metal plate, achieving reuse of the adhesive structure without the need for additional adhesive layers, thereby reducing the space occupied by adhesive layers.

[0024] In one alternative implementation, the second adhesive layer can be a single-sided adhesive, so that the non-adhesive side of the second adhesive layer contacts the metal plate. The first part of the metal plate can be connected only to the first adhesive layer, or the metal plate can be connected only to the second adhesive layer. Of course, one surface of the first part of the metal plate can be connected to the first adhesive layer and the other surface can be connected to the second adhesive layer.

[0025] In one alternative implementation, the electronic device further includes a third adhesive layer, which may be disposed on the surface of the second adhesive layer near the metal plate. The third adhesive layer is made of the same material as the first adhesive layer. This allows two surfaces of the first portion of the metal plate to be connected to the first adhesive layer and the third adhesive layer, respectively. Both the first and third adhesive layers are, for example, applied via dispensing, thus improving the connection stability of the metal plate.

[0026] In one alternative implementation, a third groove is provided on the second adhesive layer, and the third adhesive layer can be disposed in the third groove. This saves space between the support member and the rotating shaft mechanism.

[0027] In one alternative implementation, the surface of the second adhesive layer has an uneven structure, and the third adhesive layer is connected to this uneven structure. This improves the bonding stability between the second and third adhesive layers.

[0028] In one alternative implementation, the electronic device further includes a buffer layer disposed on the surface of the metal plate. Thus, by providing a buffer layer, the display screen can be cushioned, thereby balancing support and cushioning performance, improving the resistance to compression and drop reliability of the display screen's bending area, and helping to reduce creases in the display screen.

[0029] In one alternative implementation, the buffer layer is made of at least one of the following: a non-Newtonian fluid, thermoplastic polyurethane elastomer (TPU), and OCA adhesive. This improves the buffering performance of the display screen.

[0030] In one alternative implementation, the metal plate is made of at least one of the following materials: a thin metal film and stainless steel. This improves the support performance for the display screen.

[0031] In one optional implementation, the longitudinal cross-sectional shape of the groove includes: T-shape, dovetail groove shape, and trapezoidal shape. Therefore, the contact area between the groove and the first adhesive layer is related to the shape of the groove; by adjusting the groove shape, the connection stability between the groove and the first adhesive layer can be increased.

[0032] In one alternative implementation, the groove can be either a through groove or a blind groove. This allows for adjustment of the groove's length based on its position, providing greater flexibility.

[0033] In one optional implementation, the hinge mechanism includes a first hinge panel and a second hinge panel. The bending portion includes a first connecting portion and a second connecting portion symmetrical about the bending line of the display screen. The first connecting portion is close to the first support portion, and the second connecting portion is close to the second support portion. The first connecting portion is connected to the first hinge panel, and the second connecting portion is connected to the second hinge panel. Thus, the electronic device is U-shaped when in a folded or bent state.

[0034] In one optional implementation, the pivot mechanism further includes: a main shaft disposed between the first pivot door panel and the second pivot door panel; the bending portion further includes a first bending portion disposed between the first connecting portion and the second connecting portion; the main shaft and the first bending portion are opposite to each other. Thus, the main shaft can be used to connect the first pivot door panel and the second pivot door panel, allowing the first pivot door panel and the second pivot door panel to rotate around the main shaft.

[0035] In one optional implementation, the bending portion further includes a second bending portion and a third bending portion. The second bending portion is located between the first support portion and the first connecting portion, and the third bending portion is located between the second support portion and the second connecting portion. The bending direction of the second bending portion is different from that of the first bending portion. Therefore, this adhesive structure can be used in teardrop-shaped screens.

[0036] In one alternative implementation, the bending portion is provided with multiple through holes. This improves the bending performance of the electronic device.

[0037] In one optional implementation, the bending portion is provided with multiple through slots, each slot including a first opening, a second opening, and a third opening. The first opening and the second opening are respectively located at both ends of the support member, and the third opening connects the first opening and the second opening, and the third opening is parallel to the bending axis direction of the support member. This improves the bending performance of the electronic device.

[0038] A second aspect of this application provides a display assembly for use in an electronic device including a hinge mechanism. The display assembly includes: a stacked display screen and a support member; the support member is disposed on a side opposite to the light-emitting surface of the display screen; the support member includes: a bending portion, a first support portion, and a second support portion; when the display screen is in a flattened state, the bending portion is located between the first support portion and the second support portion, and the bending portion is disposed opposite to the hinge mechanism; the bending portion includes a first region with a groove for distributing a first adhesive layer, which is used to connect with a second adhesive layer to bond the hinge mechanism. Therefore, the display assembly, employing the above-described bonding structure, achieves better bonding performance.

[0039] A third aspect of this application provides a hinge mechanism for use in an electronic device including a display assembly. The hinge mechanism includes a hinge door panel with a second region having a groove for distributing a first adhesive layer. The first adhesive layer is used to connect with a second adhesive layer to bond the display assembly. Thus, the hinge mechanism employs the aforementioned bonding structure, resulting in a better bonding effect.

[0040] This application provides an electronic device, a display assembly, and a hinge mechanism. The electronic device includes: a display screen, a support member, an adhesive structure, and a hinge mechanism stacked together. The support member is disposed on a side opposite to the light-emitting surface of the display screen. The support member includes: a bending portion, a first support portion, and a second support portion. The bending portion includes a first region. The hinge mechanism includes a hinge panel, which includes a second region opposite to the first region. The adhesive structure includes: a first adhesive layer and a second adhesive layer stacked together. The first region has a groove, or the second region has a groove, or both the first and second regions have grooves. The first adhesive layer is disposed in the groove, and the second adhesive layer is disposed between the first and second regions. Therefore, the first adhesive layer is disposed in the groove, eliminating the need to occupy the space between the support member and the hinge panel, which is beneficial for the thinness and lightness of the device and reduces the impact of the first adhesive layer on the touch feel and flatness of the display screen. The first adhesive layer can be formed by dispensing, and it has a higher modulus and hardness, resulting in higher connection stability and improved flatness and rigidity of the flexible display screen. The second adhesive layer uses materials such as foam adhesive, which has a lower modulus and provides cushioning performance.

[0041] In some embodiments, the electronic device further includes an adhesive overflow tray disposed adjacent to the recess, such that the adhesive overflow tray surrounds the recess.

[0042] In some embodiments, the adhesive structure can be used not only to connect the rotating shaft mechanism and the support member, but also to fix the metal plate, realizing the reuse of the adhesive structure without the need for additional adhesive layers, thus reducing the space occupied by the adhesive layers.

[0043] In some embodiments, the first adhesive layer can also be disposed on the surface of the second adhesive layer near the metal plate, so that both surfaces of the metal plate are connected to the first adhesive layer, thereby improving the connection stability of the metal plate.

[0044] In some embodiments, an uneven structure may be provided on the surface of the second adhesive layer adjacent to the first adhesive layer to increase the contact area and improve the connection stability. Attached Figure Description

[0045] Figure 1 is a structural schematic diagram of a foldable display terminal provided in an embodiment of this application;

[0046] Figure 2 is a cross-sectional structural diagram of a foldable display terminal;

[0047] Figure 3 is a schematic diagram of a foldable display terminal in a folded state;

[0048] Figure 4 is a schematic diagram of another foldable display terminal in a folded state;

[0049] Figure 5 is a structural schematic diagram of a support member;

[0050] Figure 6 is a cross-sectional structural diagram of a foldable display terminal provided in an embodiment of this application;

[0051] Figure 7 is a partial structural schematic diagram of a foldable display terminal provided in an embodiment of this application;

[0052] Figure 8 is a partial structural schematic diagram of another foldable display terminal provided in an embodiment of this application;

[0053] Figure 9 is a schematic diagram of the longitudinal section structure of a groove provided in an embodiment of this application;

[0054] Figure 10 is a schematic diagram of the longitudinal section structure of another groove provided in an embodiment of this application;

[0055] Figure 11 is a schematic diagram of the longitudinal section structure of another groove provided in an embodiment of this application;

[0056] Figure 12 is a partial structural schematic diagram of another foldable display terminal provided in an embodiment of this application;

[0057] Figure 13 is a schematic diagram of the adhesive structure in Figure 12;

[0058] Figure 14 is a partial structural schematic diagram of another foldable display terminal provided in an embodiment of this application;

[0059] Figure 15 is a partial structural schematic diagram of another foldable display terminal provided in an embodiment of this application;

[0060] Figure 16 is a partial structural schematic diagram of another foldable display terminal provided in an embodiment of this application. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0062] In the following description, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0063] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0064] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0065] This application provides a foldable display terminal, which can be a mobile phone, monitor, tablet computer, in-vehicle computer, watch, e-reader, laptop computer, wearable device, or other electronic device with folding function. This application does not impose special limitations on the specific form of the foldable display terminal described above; the embodiment shown in Figure 1 uses a foldable mobile phone as an example for illustration.

[0066] To facilitate understanding of the foldable display terminal provided in this application embodiment, a conventional foldable display terminal is described below with reference to Figure 1:

[0067] As shown in Figure 1, the foldable display terminal 1 includes a flexible display screen 10. The flexible display screen 10 can be an active matrix organic light emitting diode (AMOLED) display screen.

[0068] As a self-emissive display, AMOLED displays do not require a backlight module (BLM). Therefore, when the substrate of an AMOLED display is made of a flexible resin material, such as polyethylene terephthalate (PET), the AMOLED display can be bent.

[0069] In addition, as shown in Figure 1, the foldable display terminal 1 also includes a rotating mechanism 20 for supporting the flexible display screen 10.

[0070] The rotating mechanism 20 includes a first middle frame 201, a second middle frame 202, and a rotating shaft mechanism 203 disposed between the first middle frame 201 and the second middle frame 202.

[0071] The first middle frame 201 and the second middle frame 202 can be used to support the flexible display screen 10, so that the flexible display screen 10 can remain as flat as possible during use and protect the non-display surface of the flexible display screen 10.

[0072] A portion of the flexible display screen 10 is fixed to the first middle frame 201 by an adhesive layer 30, a portion is fixed to the second middle frame 202 by the adhesive layer 30, and a portion is fixed to the rotating shaft mechanism 203 by the adhesive layer 30. The adhesive layer 30 can be a thin film layer formed by applying adhesive; the specific form of the adhesive layer 30 is not limited in this embodiment. Furthermore, other electronic components, such as cameras, headphones, earpieces, buttons, and batteries, can also be disposed on the first middle frame 201 and the second middle frame 202; the other electronic components disposed on the first middle frame 201 and the second middle frame 202 are not limited in this embodiment.

[0073] In some embodiments, the flexible display screen 10 may include a non-bending area 101 corresponding to the first middle frame 201, a non-bending area 102 corresponding to the second middle frame 202, and a bending area 1003 corresponding to the pivot mechanism 203. The bending area 1003 may be connected between the non-bending area 101 and the non-bending area 102.

[0074] The non-bending area 101 can be connected to the first middle frame 201, and the non-bending area 102 can be connected to the second middle frame 202.

[0075] A hinge mechanism 203 can be connected between the first and second middle frames. A portion of the bending area 1003 of the flexible display screen 10 can be fixed to the hinge mechanism 203. Under the action of the hinge mechanism 203, the first and second middle frames can move closer to or further away from each other. Correspondingly, the non-bending areas 101 and 102 of the flexible display screen 10 can move closer to or further away from each other, allowing the flexible display screen 10 to be folded or unfolded.

[0076] When the foldable display terminal 1 is in the folded state, the first middle frame 201 and the second middle frame 202 can be arranged parallel to each other and opposite to each other, and the distance between the first middle frame 201 and the second middle frame 202 is minimal. Similarly, the non-bending area 101 and the non-bending area 102 can be arranged parallel to each other and opposite to each other, and the height between the non-bending area 101 and the non-bending area 102 is minimal. At this time, the non-bending area 101 and the non-bending area 102 can be regarded as being arranged on different planes.

[0077] The foldable display terminal 1 shown in Figure 1 is in the unfolded state. In the unfolded state, the angle between the first middle frame 201 and the second middle frame 202 can be approximately 180°, and the flexible display screen 10 can be in the unfolded state shown in Figure 1.

[0078] Foldable electronic devices can be unfolded into a flat state, folded into a closed state, or exist in an intermediate state between the two. Foldable electronic devices have at least two states: a flat state and a closed state. In some cases, a third state, an intermediate state between the flat and closed states, may be further included. The intermediate state is not unique; it can be any one or more states between the flat and closed states of the electronic device.

[0079] In some embodiments, as shown in Figures 3 and 4, the foldable display terminal adopts an inward folding design, and the flexible display screen 10 is located inside the device when folded.

[0080] In other embodiments, the foldable display terminal adopts an outward folding design, in which the flexible display screen 10 is located on the outside of the device when folded.

[0081] Figure 1 above illustrates a dual-screen electronic device. The foldable electronic devices involved in this application embodiment can also be devices with more screens, such as three-screen foldable, four-screen foldable, five-screen foldable, and other electronic devices.

[0082] The following description uses a dual-screen foldable electronic device as an example. Figure 2 is a schematic diagram of the structure of a foldable display terminal. As shown in Figure 2, in order to protect the flexible display screen 10, the electronic device also includes a support member 40, which is disposed on the backlight side of the flexible display screen 10 and is used to provide reliable support for the flexible display screen 10.

[0083] The support member can be used in foldable terminals as an under-screen support for flexible displays. For example, the support member 40 can be a bamboo book structure.

[0084] As shown in Figure 2, the support member 40 is located below the flexible display screen 10.

[0085] This application does not limit the structure of the support member in its embodiments. In some embodiments, referring to FIG2, the support member 40 includes a bending portion 4003 and support portions (401 and 402). When the display screen is in a flattened state, the bending portion 4003 and the support portions (401 and 402) are distributed along a direction perpendicular to the thickness direction of the support member 40. When the display screen is in a folded state, the bending portion 4003 is in a bent state.

[0086] As shown in Figure 2, the support member 40 includes: a first support portion 401 connected to the non-bending area 101, a second support portion 402 connected to the non-bending area 102, and a bending portion 4003 partially connected to the first bending area 103.

[0087] When the display screen is in a flattened state, the bending part 4003 is disposed between the first support part 401 and the second support part 402.

[0088] As shown in Figure 3, the foldable display terminal is U-shaped when bent.

[0089] In some other embodiments, as shown in FIG4, the foldable display terminal is teardrop-shaped when bent.

[0090] For example, as shown in Figures 2 and 4, the bending area 1003 includes a second bending area 104, a first transition area 106, a first bending area 103, a second transition area 107, and a third bending area 105 connected in sequence.

[0091] In some embodiments, the bending portion 4003 of the support member 40 includes: a first bending portion 403, a first connecting portion 406, a second bending portion 404, a second connecting portion 407, and a third bending portion 405.

[0092] The first support part 401, the second bending part 404, the first connecting part 406, the first bending part 403, the second connecting part 407, the third bending part 405, and the second support part 402 are connected in sequence.

[0093] The first support portion 401 can be connected to the non-bending area 101, thereby providing mechanical support for the non-bending area 101. The second support portion 402 can be connected to the non-bending area 102, thereby providing mechanical support for the non-bending area 102. The first bending portion 403 can be correspondingly connected to the first bending area 103, thereby providing mechanical support for the first bending area 103. The second bending portion 404 can be correspondingly connected to the second bending area 104, thereby providing mechanical support for the second bending area 104. The third bending portion 405 can be correspondingly connected to the third bending area 105, thereby providing mechanical support for the third bending area 105. The first connecting portion 406 can be correspondingly attached to the first transition area 106, thereby providing mechanical support for the first transition area 106. The second connecting portion 407 can be correspondingly attached to the second transition area 107, thereby providing mechanical support for the second transition area 107.

[0094] In one example, when the flexible display screen 10 is in the unfolded state, the non-bending area 101, the second bending area 104, the first bending area 103, the third bending area 105, and the non-bending area 102 can all be in a flat state.

[0095] Correspondingly, when the flexible display screen 10 is in the unfolded state, the support member 40 can also be in the unfolded state, and the first support portion 401, the second bending portion 404, the first bending portion 403, the third bending portion 405, and the second support portion 402 can all be in a flat state. Here, the first support portion 401 being in a flat state means that any two different positions of the first support portion 401 can be considered as being located on the same plane.

[0096] As shown in Figure 4, when the flexible display screen 10 is in a folded state, the first bending area 103 can be in a bent state.

[0097] Accordingly, the first bending portion 403 can be in a bent state. Both the non-bending areas 101 and 102 can be in a flat state. Correspondingly, both the first support portion 401 and the second support portion 402 can be in a flat state. The second bending area 104 and the third bending area 105 can both be in a (slight) bent state (the curvature of the (slight) bent state can be smaller than the curvature of the folded state), wherein the curvature of the second bending area 104 can be smaller than the curvature of the first bending area 103, and the curvature of the third bending area 105 can be smaller than the curvature of the first bending area 103. The second bending area 104 can serve as a transition between the flat state of the non-bending area 101 and the bent state of the first bending area 103, and the third bending area 105 can serve as a transition between the flat state of the non-bending area 102 and the bent state of the bending area 103. Both the second bend 404 and the third bend 405 can be in a (slight) bent state, wherein the bending arc of the second bend 404 can be smaller than that of the first bend 403, and the bending arc of the third bend 405 can be smaller than that of the first bend 403. The second bend 404 can serve as a transition between the flat state of the first support 401 and the bent state of the first bend 403, and the third bend 405 can serve as a transition between the flat state of the second support 402 and the bent state of the first bend 403.

[0098] In order to improve the bending performance of the support member 40, at least one of the following can be provided on the bending portion 4003 of the support member: through hole, blind hole, and through groove.

[0099] In some embodiments, as shown in FIG5, at least one of through holes, blind holes, and through slots can be provided in the second bend 404 and the third bend 405. For example, as shown in FIG5, through slots 4001 can be provided in both the second bend 404 and the third bend 405. This is beneficial to improving the bending flexibility of the second bend 404 and the third bend 405.

[0100] In some embodiments, at least one of a through hole, a blind hole, and a through groove may be provided on the first bending portion 403. For example, referring to FIG5, a strip-shaped through hole 4002 may be provided on the first bending portion 403, which is beneficial to improving the bending flexibility of the first bending portion 403.

[0101] In some embodiments, at least one of a through hole, a blind hole, and a through groove may be provided in the first connecting portion 406 and the second connecting portion 407. Referring to FIG5, a strip-shaped through hole 4002 may also be provided in the first connecting portion 406 and the second connecting portion 407.

[0102] As shown in Figure 5, the support member 40 may include multiple through slots 4001 and multiple strip-shaped through holes 4002. The through holes 4002 may be provided on the first bent portion 403, the first connecting portion 406, and the second connecting portion 407 of the support member 40. The through slots 4001 may be provided on the second bent portion 404 and / or the third bent portion 405 of the support member 40. When the first bent portion 403 is in a bent state, the degree of bending of the first bent portion 403 is relatively large; therefore, providing through holes 4002 helps to reduce the bending stress of the first bent portion 403. The first connecting portion 406 and the second connecting portion 407 are both directly connected to the first bent portion 403; providing through holes 4002 helps to reduce the bending stress of the first bent portion 403. When the first bent portion 403 is in a bent state, the degree of bending of the second bent portion 404, the first bent portion 403, and the third bent portion 405 is less than the degree of bending of the first bent portion 403, and the amount of bending is relatively small. Setting the through groove 4001 at a position with relatively small bending can balance the bending performance and support performance of the foldable display terminal 1.

[0103] In this configuration, the first bending portion 403 is in a bent state, which can mean that the first bending portion 403 is folded. The first support portion 401 and the second support portion 402 are parallel to each other, spaced apart from each other, and face to face, with the spacing between the first support portion 401 and the second support portion 402 reaching the minimum.

[0104] Different groove structures are provided in multiple areas of the support member 40, which facilitates flexible adjustment of the bending performance and compression resistance of multiple areas of the support member 40. As shown in Figures 5 and 6, the through groove 4001 can penetrate through both ends of the support member 40. The through hole 4002 can penetrate through the thickness direction of the support member 40. The groove depth of the through groove 4001 can be less than the thickness of the support member 40.

[0105] Through groove 4001 and through hole 4002 can be processed, for example, by chemical etching.

[0106] In some embodiments, as shown in FIG2, the pivot mechanism 203 may include, for example, a first pivot door plate 2031, a main shaft (see 2033 in FIG4), and a second pivot door plate 2032 arranged sequentially along the x-direction. The main shaft 2033 is disposed between the first pivot door plate 2031 and the second pivot door plate 2032, and the first pivot door plate 2031 and the second pivot door plate 2032 can rotate around the main shaft 2033 respectively. The first pivot door plate 2031 can be a door plate number one, and the second pivot door plate 2032 can be a door plate number two.

[0107] In some embodiments, the main shaft 2033 includes a third pivot panel.

[0108] In some embodiments, the bending portion 4003 further includes a third connecting portion, and the third pivot door panel is connected to the third connecting portion.

[0109] The first pivot door panel 2031 can also be connected to the first middle frame 201, and the second pivot door panel 2032 can also be connected to the second middle frame 202. The first pivot door panel 2031 and the second pivot door panel 2032 can rotate relative to the pivot. Through the mutual movement of the first pivot door panel 2031 and the second pivot door panel 2032, the mutual movement of the first middle frame 201 and the second middle frame 202 can be driven, realizing the opening and closing function of the folding display terminal 1.

[0110] As shown in Figure 2, the first support part 401 is connected to the first middle frame 201 through the adhesive layer 301, and the second support part 402 is connected to the second middle frame 202 through the adhesive layer 302. The first connecting part 406 is connected to the first pivot door panel 2031 through the adhesive layer 303, and the second connecting part 407 is connected to the second pivot door panel 2032 through the adhesive layer 304.

[0111] In some embodiments, adhesive layers 301, 302, 303 and 304 may be adhesive-backed, such as double-sided tape, foam adhesive, OCA optical adhesive, etc.

[0112] However, the adhesive backing is relatively thick, taking up a lot of space and hindering the design of thinner and lighter devices. Furthermore, the adhesive backing has relatively low tack, requiring a wider adhesive backing to improve bonding reliability, which also occupies a significant amount of space.

[0113] In other embodiments, adhesive layers 301 and 302 can be backed with adhesive, such as double-sided tape or foam adhesive. Adhesive layers 303 and 304 can be formed by dispensing, and can be ultraviolet (UV) curable adhesives, hot melt adhesives, etc.

[0114] However, applying adhesive between the support components and the hinge mechanism can easily lead to uneven adhesive layer thickness. In foldable screens, this can result in areas with thicker adhesive and areas with thinner adhesive, causing localized unevenness or a "light and shadow distortion" visual effect after reflection. Furthermore, adhesive application requires sophisticated equipment and activation methods. During the activation process, adhesive can easily overflow beyond the designated area of ​​the adhesive line design, worsening local flatness and reliability. Additionally, the high hardness / modulus of the cured adhesive can cause a feeling of foreign matter or protrusion when pressing or touching the adhesive area, which is detrimental to screen flatness.

[0115] In some embodiments, the first support 401 is connected to the first middle frame 201 via an adhesive layer 301, and the second support 402 is connected to the second middle frame 202 via an adhesive layer 302. The first connecting part 406 and the first pivot door panel 2031, and the second connecting part 407 and the second pivot door panel 2032, may not require an adhesive layer for fixation, allowing free contact between the support and the pivot mechanism. However, when the support and pivot mechanism are not connected, the area opposite the display screen to the pivot mechanism is prone to outward arching (referred to as "reverse arching") when the display screen is bent rapidly, leading to failure. Furthermore, after a drop, the screen is unrestrained in the bending area, making it prone to severe local distortion and deformation, such as localized small-angle "dead bends," resulting in failure. Moreover, after prolonged bending and flattening, an outward arching unevenness appears in the outer R area of ​​the screen's teardrop shape (near the usual adhesive application or backing location).

[0116] In the above embodiments, the adhesive backing is not viscous enough, and the dispensing hardness is too high. Therefore, this application provides an improved electronic device that can provide a composite adhesive layer between the rotating shaft mechanism and the support member. This composite adhesive layer overlaps the dispensing and backing adhesive layers, balancing both adhesion and adhesive layer hardness. Furthermore, to save space, dispensing grooves can be provided on the rotating shaft mechanism and / or the support member, with the dispensing material disposed within the grooves. As shown in Figure 2, adhesive layers 303 and 304 can both utilize this composite adhesive layer.

[0117] Figure 6 is a cross-sectional structural diagram of an electronic device provided in an embodiment of this application. As shown in Figure 6, the electronic device includes: a display screen 10, a support member 40, an adhesive structure 300, and a hinge door panel 2031 stacked together. The support member 40 is disposed on the side opposite to the light-emitting surface of the display screen 10.

[0118] The support member 40 includes a bending portion 4003, a first support portion 401, and a second support portion 402. When the display screen 10 is in a flattened state, the bending portion 403 is located between the first support portion 401 and the second support portion 402, and the bending portion 403 is disposed opposite to the rotating shaft mechanism 203.

[0119] In some embodiments, the bending portion 4003 includes a first region (located on the first connecting portion 406 and the second connecting portion 407), and the pivot mechanism 203 includes a second region opposite to the first region (located on the first pivot door panel 2031 and the second pivot door panel 2032).

[0120] The adhesive structure 300 includes: a first adhesive layer (3001, 3003) and a second adhesive layer 3002 stacked together, the first region and / or the second region being provided with a groove 2030 (as shown in Figures 9, 10 and 11), the first adhesive layer (3001, 3003) being disposed in the groove 2030, and the second adhesive layer 3002 being disposed between the first region and the second region.

[0121] In this embodiment, the groove 2030 can be a through groove or a blind groove. A through groove refers to a groove 2030 that extends through the axial direction, while a blind groove refers to a groove 2030 that does not extend through the axial direction. When the groove 2030 is a through groove, it includes a first opening, a second opening, and a third opening. The first opening and the second opening are respectively located at both ends of the support member 40 (or the pivot door panel), and the third opening connects the first opening and the second opening. The strip-shaped opening is parallel to the bending axis direction of the support member 40 (or the pivot door panel).

[0122] The first adhesive layer (3001, 3003) can be formed by dispensing. The material of the first adhesive layer (3001, 3003) includes at least one of the following: UV-curable adhesive, hot melt adhesive, silicone, two-component adhesive, epoxy resin adhesive, and OCR optical adhesive. The OCR optical adhesive is also known as Liquid Optical Clear Adhesive (LOCA). This liquid optical adhesive has a light transmittance of over 98%, strong fluidity, good adhesive strength, and can be cured at room temperature or medium temperature. The two-component adhesive, also known as AB adhesive, includes acrylic acid, epoxy resin, polyurethane, modified amine, hardener, catalyst, and other additives.

[0123] The second adhesive layer 3002 can be a backing adhesive. For example, the second adhesive layer 3002 includes at least one of the following: backing adhesive, foam adhesive, double-sided adhesive, and OCA optical adhesive.

[0124] As shown in Figure 6, the pivot mechanism includes a first pivot door plate 2031 and a second pivot door plate 2032. The bending part 403 includes a first connecting part 406 and a second connecting part 407 that are symmetrical about the bending line of the display screen. The first connecting part 406 is close to the first support part 401, and the second connecting part 407 is close to the second support part 402.

[0125] The first region includes: a first sub-region and a second sub-region, and the second region includes: a third sub-region and a fourth sub-region.

[0126] The first connecting portion 406 includes a first sub-region, the first pivot door panel 2031 includes the third sub-region, the second connecting portion 407 includes the second sub-region, the second pivot door panel 2032 includes the fourth sub-region, and the adhesive structure 300 includes a first adhesive structure 300a and a second adhesive structure 300b. The first sub-region is connected to the third sub-region through the first adhesive structure 300a, and the second sub-region is connected to the fourth sub-region through the second adhesive structure 300b.

[0127] In this application, the foldable display terminal can adopt a symmetrical design. The following description uses one half of the foldable display terminal as an example. For instance, Figures 7, 8, 12, 14, and 15 only show one half of the foldable display terminal. The structure of the other half of the foldable display terminal can be referred to the part shown in Figure 6, and will not be repeated here. Among them, one half and the other half of the foldable display terminal are symmetrically arranged with respect to the bending line of the foldable display terminal.

[0128] In some embodiments, as shown in FIG6, the groove includes: a first groove disposed in a first region; the first adhesive layer (3001, 3003) includes: a first sub-part 3001 disposed in the first groove; and a second adhesive layer 3002 disposed, for example, between the first sub-part 3001 and the second region of the first adhesive layer (3001, 3003). The first region can be connected by the first sub-part 3001, the second adhesive layer 3002, and the second region of the first adhesive layer (3001, 3003).

[0129] In some embodiments, the first connecting portion 406 and the second connecting portion 407 are further provided with at least one of a through hole, a blind hole, and a through groove, and the first groove can avoid the through hole, blind hole, or through groove.

[0130] When preparing the adhesive structure 300, the adhesive can be applied or dripped into the first groove by dispensing to pre-cur the adhesive and form the first sub-part 3001 of the first adhesive layer (3001, 3003) in the first groove. The backing adhesive is then bonded to the second region as the second adhesive layer 3002. Next, the first sub-part 3001 of the first adhesive layer (3001, 3003) and the second adhesive layer 3002 are bonded together and the first sub-part 3001 of the first adhesive layer (3001, 3003) is cured again.

[0131] In other embodiments, as shown in FIG7, the groove includes a second groove disposed in a second region. The first adhesive layer (3001, 3003) includes a second sub-part 3003 disposed in the second groove. The second adhesive layer 3002 is disposed, for example, between the second sub-part 3003 of the first adhesive layer (3001, 3003) and the first region. The first region can be connected by the second adhesive layer 3002, the second sub-part 3003 of the first adhesive layer (3001, 3003), and the second region.

[0132] In some embodiments, the first connecting portion 406 and the second connecting portion 407 are provided with at least one of a through hole, a blind hole, and a through groove, and the second adhesive layer 3002 may cover the through hole and / or the through groove.

[0133] When preparing the adhesive structure 300, the adhesive can be applied or dripped into the second groove by dispensing to pre-cur the adhesive, forming the second sub-part 3003 of the first adhesive layer (3001, 3003) in the second groove. The backing adhesive is then bonded to the first area as the second adhesive layer 3002. Next, the second sub-part 3003 of the first adhesive layer (3001, 3003) and the second adhesive layer 3002 are bonded together, and the second sub-part 3003 of the first adhesive layer (3001, 3003) is cured again.

[0134] In some other embodiments, as shown in FIG8, the groove includes a first groove and a second groove. The first groove is disposed in a first region, and the second groove is disposed in a second region. The first adhesive layer (3001, 3003) includes a first sub-partition 3001 and a second sub-partition 3003. The first sub-partition 3001 is disposed in the first groove, and the second sub-partition 3003 is disposed in the second groove. The first sub-partition 3001, the second adhesive layer 3002, and the second sub-partition 3003 of the first adhesive layer (3001, 3003) are stacked, and the first sub-partition 3001 of the first adhesive layer (3001, 3003) is connected to the second adhesive layer 3002. The second adhesive layer 3002 and the second sub-partition 3003 of the first adhesive layer (3001, 3003) are connected to each other. In this way, the first region and the second region can be connected sequentially through the first sub-part 3001 of the first adhesive layer (3001, 3003), the second adhesive layer 3002, and the second sub-part 3003 of the first adhesive layer (3001, 3003).

[0135] When preparing the adhesive structure 300, the adhesive can first be applied or dripped into the first groove by dispensing to pre-cure the adhesive as the first sub-part 3001 of the first adhesive layer (3001, 3003). The adhesive can then be applied or dripped into the second groove as the second sub-part 3003 of the first adhesive layer (3001, 3003). The backing adhesive is then bonded to the first or second region as the second adhesive layer 3002. Next, the first sub-part 3001, the second adhesive layer 3002, and the second sub-part 3003 of the first adhesive layer (3001, 3003) are bonded together, and the first sub-part 3001 and the second sub-part 3003 of the first adhesive layer (3001, 3003) are cured again.

[0136] In this embodiment, the first adhesive layer (3001, 3003) is formed by dispensing, reducing the molding difficulty. The second adhesive layer 3002 uses back adhesive, further reducing the processing difficulty. The first adhesive layer (3001, 3003) is positioned within the groove 2030, eliminating the need to occupy space between the support member 40 and the hinge door panel, which facilitates the thinning of the device and reduces the impact of the first adhesive layer (3001, 3003) on the touch feel and flatness of the display screen 10. The first adhesive layer (3001, 3003), formed by dispensing, has higher modulus and hardness, resulting in greater connection stability and improved flatness and rigidity of the flexible display screen 10. The second adhesive layer 3002, made of materials such as foam adhesive, has a lower modulus and provides cushioning properties.

[0137] The embodiments of this application do not limit the shape of the groove 2030 and the first adhesive layer (3001, 3003).

[0138] In some embodiments, the groove 2030 engages with the first adhesive layer (3001, 3003). This engagement with the groove 2030 helps to improve the bonding force between the support member 40 and / or the hinge panel and the first adhesive layer (3001, 3003).

[0139] In some embodiments, as shown in FIG9, the longitudinal cross-sectional shape of the groove 2030 can be square, and correspondingly, the first adhesive layer (3001, 3003) can be square protrusions.

[0140] In some embodiments, as shown in FIG10, the longitudinal cross-sectional shape of the groove 2030 can be trapezoidal, and correspondingly, the first adhesive layer (3001, 3003) can be a trapezoidal protrusion.

[0141] In some embodiments, as shown in FIG11, the longitudinal cross-sectional shape of the groove 2030 can be dovetail-shaped, and correspondingly, the first adhesive layer (3001, 3003) can be a dovetail-shaped protrusion.

[0142] In some embodiments, the longitudinal cross-sectional shape of the groove 2030 may be conical, and correspondingly, the first adhesive layer (3001, 3003) may be a conical protrusion.

[0143] In some embodiments, the longitudinal cross-sectional shape of the groove 2030 can be arc-shaped, and correspondingly, the first adhesive layer (3001, 3003) can be an arc-shaped protrusion.

[0144] The first adhesive layer (3001, 3003) and the groove 2030 provided in this application embodiment are matched. A larger contact area with the groove 2030 is more conducive to increasing the bonding force of the contact surface. For example, the bonding force at the interface between a dovetail-shaped first adhesive layer (3001, 3003) and a dovetail-shaped groove 2030 can be slightly greater than the bonding force at the interface between a square first adhesive layer (3001, 3003) and a square groove 2030. Similarly, the bonding force at the interface between a square first adhesive layer (3001, 3003) and a square groove 2030 can be slightly greater than the bonding force at the interface between a conical first adhesive layer (3001, 3003) and a conical groove 2030. By adjusting the shape, this application can increase the inner wall area of ​​the groove 2030, thereby increasing the adhesive area and reducing the risk of delamination.

[0145] To further improve the bonding force between the first adhesive layer (3001, 3003) and the second adhesive layer 3002, in some embodiments, the second adhesive layer 3002 can be surface treated to form an uneven structure 3000 on its surface, thereby increasing the contact area between the first adhesive layer (3001, 3003) and the second adhesive layer 3002 and improving the bonding force between them.

[0146] For example, the second adhesive layer 3002 includes: a first surface and a second surface opposite to each other, the first surface of the second adhesive layer 3002 being close to a first region, and the second surface of the second adhesive layer 3002 being close to a second region. An uneven structure 3000 may be provided on the first surface and / or the second surface of the second adhesive layer 3002.

[0147] In some embodiments, as shown in FIG13, the first adhesive layer (3001, 3003) includes: a first sub-part 3001 disposed in a first groove, and a first surface of the second adhesive layer 3002 connected to the first sub-part 3001 of the first adhesive layer (3001, 3003). A first uneven structure 3000A may be provided on the first surface of the second adhesive layer 3002.

[0148] When the first sub-part 3001 of the first adhesive layer (3001, 3003) comes into contact with the first surface of the second adhesive layer 3002, the first sub-part 3001 of the first adhesive layer (3001, 3003) is in a semi-cured state. When the shape of the first sub-part 3001 of the first adhesive layer (3001, 3003) comes into contact with the second adhesive layer 3002, it can deform under the action of the uneven structure 3000 on the surface of the second adhesive layer 3002. The surface of the first sub-part 3001 is formed to match the shape of the first surface of the second adhesive layer 3002. That is, a second concave-convex structure 3000B is generated on the surface of the first sub-part 3001 of the first adhesive layer (3001, 3003) to fit into the first surface of the second adhesive layer 3002, thereby increasing the contact area of ​​the bonding surface between the first adhesive layer (3001, 3003) and the second adhesive layer 3002 and improving the bonding force between the first adhesive layer (3001, 3003) and the second adhesive layer 3002.

[0149] In other embodiments, the first adhesive layer (3001, 3003) includes a second sub-part 3003 disposed in a second groove, and the second surface of the second adhesive layer 3002 is connected to the second sub-part 3003 of the first adhesive layer (3001, 3003). A concave-convex structure 3000 may be provided on the second surface of the second adhesive layer 3002.

[0150] When the second sub-part 3003 of the first adhesive layer (3001, 3003) comes into contact with the second surface of the second adhesive layer 3002, the second sub-part 3003 of the first adhesive layer (3001, 3003) is in a semi-cured state. When the shape of the second sub-part 3003 of the first adhesive layer (3001, 3003) comes into contact with the second adhesive layer 3002, it can deform under the action of the uneven structure 3000 on the surface of the second adhesive layer 3002, causing the first adhesive layer (3001, 3003) to... 3) The surface of the second sub-part 3003 is adapted to the shape of the second surface of the second adhesive layer 3002. That is, a concave-convex structure 3000 is generated on the surface of the second sub-part 3003 of the first adhesive layer (3001, 3003) to fit into the second surface of the second adhesive layer 3002, thereby increasing the contact area of ​​the connecting surfaces of the first adhesive layer (3001, 3003) and the second adhesive layer 3002 and improving the bonding force between the first adhesive layer (3001, 3003) and the second adhesive layer 3002.

[0151] In other embodiments, the first adhesive layer (3001, 3003) includes a first sub-partition 3001 and a second sub-partition 3003. The first sub-partition 3001 is disposed in a first groove, and the second sub-partition 3003 is disposed in a second groove. The first surface of the second adhesive layer 3002 is connected to the first sub-partition 3001 of the first adhesive layer (3001, 3003), and the second surface of the second adhesive layer 3002 is connected to the second sub-partition 3003 of the first adhesive layer (3001, 3003). The uneven structure 3000 can be provided on both the first and second surfaces of the second adhesive layer 3002.

[0152] When the first sub-parts 3001 and 3003 of the first adhesive layer (3001, 3003) come into contact with the second adhesive layer 3002, the first sub-parts 3001 and 3003 are in a semi-cured state and can deform under the action of the uneven structure 3000 on the surface of the second adhesive layer 3002. The uneven structure 3000 that fits into the surface of the second adhesive layer 3002 is generated on the surface of the first sub-parts 3001 and the surface of the second sub-parts 3003 of the first adhesive layer (3001, 3003), which increases the contact area of ​​the bonding surface between the first adhesive layer (3001, 3003) and the second adhesive layer 3002 and improves the bonding force between the first adhesive layer (3001, 3003) and the second adhesive layer 3002.

[0153] The adhesive structure 300 provided in this embodiment can have a concave-convex structure 3000 on the surface where the second adhesive layer 3002 connects to the first adhesive layer (3001, 3003), increasing the contact area between the first adhesive layer (3001, 3003) and the second adhesive layer 3002, and improving the bonding force between the first adhesive layer (3001, 3003) and the second adhesive layer 3002. Furthermore, by providing this concave-convex structure 3000, the adhesive space can be further increased, which helps prevent the adhesive from overflowing from the first adhesive layer (3001, 3003).

[0154] When the first adhesive layer (3001, 3003) comes into contact with the second adhesive layer 3002, the adhesive in the first adhesive layer (3001, 3003) is in a semi-cured state, which is prone to overflow. In order to prevent the adhesive from overflowing into the gap between the first and second regions, as shown in Figure 14, an overflow groove 3004 can be provided, and the overflow groove 3004 is adjacent to the groove 2030, so that the excess adhesive flows into the overflow groove 3004, reducing the impact of adhesive overflow on the flatness and bending performance of the display screen 10.

[0155] This application does not limit the shape of the glue overflow channel 3004. In some embodiments, there is one glue overflow channel 3004, which is, for example, annular, and may be arranged around the groove 2030.

[0156] In other embodiments, there are multiple overflow grooves 3004, each of which is adjacent to the groove 2030. The multiple overflow grooves 3004 can be arranged in a ring around the groove 2030.

[0157] The electronic device provided in this application embodiment can contain the overflow of adhesive liquid from the first adhesive layer (3001, 3003) by providing an overflow groove 3004 around the groove 2030, thereby preventing the adhesive liquid from overflowing outside the bonding area and reducing the impact of adhesive liquid overflow on the flatness or bending reliability of the display screen 10.

[0158] In some embodiments, the electronic device further includes a metal plate 2034, which may be disposed between the bending portion 403 of the support member 40 and the pivot mechanism 203. The metal plate 2034 can provide support for the display screen 10, improve the compression resistance and drop reliability of the bending area of ​​the display screen 10, and help improve the creases of the display screen 10.

[0159] The material of metal sheet 2034 includes at least one of stainless steel and metal film, wherein the stainless steel can be SUS steel sheet.

[0160] This application does not limit the shape or number of metal plates 2034. In some embodiments, the shape of the metal plate 2034 may be the same as the shape of the bent portion 403 of the support member 40. There may be one or more metal plates 2034.

[0161] This application does not limit the structure of the metal plate 2034. In some embodiments, the metal plate 2034 includes a first portion and a second portion connected together. The first portion is disposed between the first adhesive layer (3001, 3003) and the second adhesive layer 3002 to fix the metal plate 2034, so that the metal plate 2034 can be stably disposed between the support member 40 and the rotating shaft mechanism 203. When the display screen 10 is bent, the metal plate 2034 can bend accordingly, and the second portion can slide relative to the support member 40 to reduce the rebound force during bending and prevent the electronic device from failing to close due to excessive bending stress of the metal plate 2034.

[0162] The electronic device provided in this application embodiment has an adhesive structure that can be used not only to connect the rotating shaft mechanism and the support member, but also to fix the metal plate, realizing the reuse of the adhesive structure without the need to set other adhesive layers, thus reducing the space occupied by the adhesive layers.

[0163] This application does not limit the connection method between the metal plate 2034 and the adhesive structure 300. In some embodiments, a first portion of the metal plate 2034 is connected to the first adhesive layer (3001, 3003) and / or the second adhesive layer 3002.

[0164] The second adhesive layer 3002 can be a single-sided adhesive, so that the non-adhesive side of the second adhesive layer 3002 contacts the metal plate 2034. The first part of the metal plate 2034 can be connected only to the first adhesive layer (3001, 3003), or the metal plate 2034 can be connected only to the second adhesive layer 3002. Of course, one surface of the first part of the metal plate 2034 can be connected to the first adhesive layer (3001, 3003), and the other surface can be connected to the second adhesive layer 3002.

[0165] In some embodiments, the first adhesive layer further includes a third sub-part (also referred to as the third adhesive layer), and the third sub-part of the first adhesive layer may also be disposed on the surface of the second adhesive layer 3002 near the metal plate 2034, so that both surfaces of the first part of the metal plate 2034 are connected to the first adhesive layer, thereby improving the connection stability of the metal plate 2034.

[0166] In some embodiments, a third groove 2030 is provided on the second adhesive layer 3002, and a third sub-part of the first adhesive layer may be disposed in the third groove 2030.

[0167] In some embodiments, the surface of the second adhesive layer 3002 is provided with a concave-convex structure 3000, and a third sub-part of the first adhesive layer is connected to the concave-convex structure 3000.

[0168] In this embodiment, by providing a metal plate 2034 between the pivot mechanism 203 and the support member 40, the support performance of the display screen 10 can be enhanced, the compression resistance and drop reliability of the bending area of ​​the display screen 10 can be improved, and the creases of the display screen 10 can be reduced.

[0169] In some embodiments, as shown in FIG16, the electronic device includes a buffer layer 2035 disposed on the surface of a metal plate 2034.

[0170] In some embodiments, the buffer layer 2035 is disposed on only one surface of the metal plate 2034. For example, the buffer layer 2035 is disposed on only the upper surface of the metal plate 2034, or the buffer layer 2035 is disposed on only the lower surface of the metal plate 2034.

[0171] In some other embodiments, a buffer layer 2035 is provided on both the upper and lower surfaces of the metal plate 2034.

[0172] In this embodiment, the buffer layer 2035 and the metal plate 2034 form a buffer stack. The buffer stack can be disposed between the bending portion 403 of the support member 40 and the rotating shaft mechanism 203. The buffer stack can provide support for the display screen 10, improve the compression resistance and drop reliability of the bending area of ​​the display screen 10, and help improve the creases of the display screen 10.

[0173] The buffer layer 2035 may be made of a polymer material. For example, the polymer material includes at least one of the following: non-Newtonian fluid, thermoplastic polyurethanes (TPU), and OCA adhesive.

[0174] This application does not limit the shape or number of buffer layers. In some embodiments, the shape of the buffer layer may be the same as the shape of the bent portion 403 of the support member 40. There may be one or more buffer layers.

[0175] This application does not limit the structure of the buffer stack. In some embodiments, the buffer stack includes a first portion and a second portion connected together. The first portion is disposed between the first adhesive layer (3001, 3003) and the second adhesive layer 3002 to fix the buffer stack, so that the buffer stack can be stably disposed between the support member 40 and the rotating shaft mechanism 203. When the display screen 10 is bent, the buffer stack can bend accordingly, and the second portion can slide relative to the support member 40 to reduce the rebound force during bending and prevent the electronic device from failing to close due to excessive bending stress of the buffer stack.

[0176] This application does not limit the connection method between the buffer layer and the adhesive structure 300. In some embodiments, the first portion of the buffer layer is connected to the first adhesive layer (3001, 3003) and / or the second adhesive layer 3002.

[0177] The second adhesive layer 3002 can be a single-sided adhesive, so that the non-adhesive side of the second adhesive layer 3002 contacts the buffer stack. The first part of the buffer stack can be connected only to the first adhesive layer (3001, 3003), or the buffer stack can be connected only to the second adhesive layer 3002. Of course, one surface of the first part of the buffer stack can be connected to the first adhesive layer (3001, 3003), and the other surface can be connected to the second adhesive layer 3002.

[0178] In this embodiment, a buffer layer is provided between the pivot mechanism 203 and the support member 40. The metal plate 2034 in the buffer layer has a high modulus, which can enhance the support performance of the display screen 10. The buffer layer in the buffer layer has a low modulus, which can provide cushioning for the display screen 10. In this way, both support performance and cushioning performance can be taken into account, improving the compression resistance and drop reliability of the bending area of ​​the display screen 10, and also helping to improve the creases of the display screen 10.

[0179] This application also provides a display screen assembly for use in an electronic device including a hinge mechanism. The display screen assembly includes: a stacked display screen and a support member; the support member is disposed on a side opposite to the light-emitting surface of the display screen; the support member includes: a bending portion, a first support portion, and a second support portion. When the display screen is in a flattened state, the bending portion is located between the first support portion and the second support portion, and the bending portion is disposed opposite to the hinge mechanism; the bending portion includes a first region with a groove for distributing a first adhesive layer, which is used to connect with a second adhesive layer to bond the hinge mechanism. The description of the first and second adhesive layers can be found in the above embodiments of this application. The first and second adhesive layers form an adhesive structure, and the display screen assembly using this adhesive structure achieves better bonding.

[0180] This application also provides a hinge mechanism used in an electronic device including a display screen assembly. The hinge mechanism includes a hinge door panel with a second region having a groove for distributing a first adhesive layer. The first adhesive layer is used to connect with a second adhesive layer to bond the display screen assembly. The description of the first and second adhesive layers can be found in the above embodiments of this application. The first and second adhesive layers form an adhesive structure, and the hinge mechanism employing this adhesive structure achieves better bonding results.

[0181] An electronic device, a display assembly, and a hinge mechanism are disclosed. The electronic device includes: a display screen, a support member, an adhesive structure, and a hinge mechanism stacked together. The support member is disposed on a side opposite to the light-emitting surface of the display screen. The support member includes: a bending portion, a first support portion, and a second support portion. The bending portion includes a first region. The hinge mechanism includes a hinge panel, which includes a second region opposite to the first region. The adhesive structure includes: a first adhesive layer and a second adhesive layer stacked together. The first region may have a groove, or the second region may have a groove, or both the first and second regions may have grooves. The first adhesive layer is disposed within the groove, and the second adhesive layer is disposed between the first and second regions. Therefore, the first adhesive layer is disposed within the groove, eliminating the need to occupy space between the support member and the hinge panel, which facilitates a thinner and lighter device and reduces the impact of the first adhesive layer on the touch feel and flatness of the display screen. The first adhesive layer can be formed by dispensing, and it has a higher modulus and hardness, resulting in higher connection stability and improved flatness and rigidity of the flexible display screen. The second adhesive layer uses materials such as foam adhesive, which has a lower modulus and provides cushioning performance.

[0182] In some embodiments, the electronic device further includes an adhesive overflow tray disposed adjacent to the recess, such that the adhesive overflow tray surrounds the recess.

[0183] In some embodiments, the adhesive structure can be used not only to connect the rotating shaft mechanism and the support member, but also to fix the metal plate, realizing the reuse of the adhesive structure without the need for additional adhesive layers, thus reducing the space occupied by the adhesive layers.

[0184] In some embodiments, the first adhesive layer can also be disposed on the surface of the second adhesive layer near the metal plate, so that both surfaces of the metal plate are connected to the first adhesive layer, thereby improving the connection stability of the metal plate.

[0185] In some embodiments, an uneven structure may be provided on the surface of the second adhesive layer adjacent to the first adhesive layer to increase the contact area and improve the connection stability.

[0186] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electronic device, characterized in that, include: Layered display screen, support components, bonding structure, and rotating mechanism; The support member is located on the side opposite to the light-emitting surface of the display screen; The support component includes: a bending portion, a first support portion, and a second support portion. When the display screen is in a flattened state, the bending portion is located between the first support portion and the second support portion, and the bending portion is disposed opposite to the rotating shaft mechanism. The bending portion includes a first region; the rotating shaft mechanism includes a second region opposite to the first region; The adhesive structure includes: a first adhesive layer and a second adhesive layer stacked together, wherein the first region and / or the second region are provided with grooves, the first adhesive layer is disposed in the grooves, and the second adhesive layer is disposed between the first region and the second region.

2. The electronic device according to claim 1, characterized in that, The first adhesive layer is formed by dispensing.

3. The electronic device according to claim 1 or 2, characterized in that, The material of the first adhesive layer includes at least one of the following: UV curable adhesive, hot melt adhesive, silicone, two-component adhesive, epoxy resin adhesive, and OCR optical adhesive.

4. The electronic device according to any one of claims 1-3, characterized in that, The second adhesive layer includes at least one of the following: backing adhesive, foam adhesive, double-sided adhesive, and OCA optical adhesive.

5. The electronic device according to any one of claims 1-4, characterized in that, The first surface of the first adhesive layer and the second surface of the second adhesive layer are connected, and the second surface of the second adhesive layer is provided with a first uneven structure.

6. The electronic device according to claim 5, characterized in that, The first surface of the first adhesive layer is provided with a second concave-convex structure that is adapted to the first concave-convex structure.

7. The electronic device according to any one of claims 1-6, characterized in that, The electronic device further includes an adhesive overflow tray, which is disposed in the first region and / or the second region, and the adhesive overflow tray is adjacent to the groove.

8. The electronic device according to claim 7, characterized in that, The overflow groove is arranged around the recess.

9. The electronic device according to any one of claims 1-8, characterized in that, The electronic device further includes a metal plate disposed between the bending portion and the rotating shaft mechanism. The metal plate includes a first portion and a second portion connected to each other. The first portion is disposed between the first adhesive layer and the second adhesive layer. When the display screen is bent, the metal plate bends accordingly, and the second portion can slide relative to the support member.

10. The electronic device according to claim 9, characterized in that, The first portion is connected to the first adhesive layer and / or the second adhesive layer.

11. The electronic device according to claim 9 or 10, characterized in that, The electronic device further includes a buffer layer disposed on the surface of the metal plate.

12. The electronic device according to claim 11, characterized in that, The material of the buffer layer includes at least one of the following: non-Newtonian fluid, thermoplastic polyurethane elastomer (TPU), and OCA adhesive.

13. The electronic device according to any one of claims 9-12, characterized in that, The metal plate is made of at least one of the following materials: metal film and stainless steel.

14. The electronic device according to any one of claims 9-13, characterized in that, The electronic device further includes a third adhesive layer disposed between the second adhesive layer and the metal plate, the third adhesive layer being made of the same material as the first adhesive layer.

15. The electronic device according to any one of claims 1-14, characterized in that, The longitudinal cross-sectional shape of the groove includes: rectangular, dovetail groove, and trapezoidal.

16. The electronic device according to any one of claims 1-15, characterized in that, The groove can be either a through groove or a blind groove.

17. The electronic device according to any one of claims 1-16, characterized in that, The pivot mechanism includes a first pivot door panel and a second pivot door panel. The bending portion includes a first connecting portion and a second connecting portion symmetrical about the bending line of the display screen. The first connecting portion is close to the first supporting portion, and the second connecting portion is close to the second supporting portion. The first region includes a first sub-region and a second sub-region. The second region includes a third sub-region and a fourth sub-region. The first connecting portion includes the first sub-region, the first pivot door panel includes the third sub-region, the second connecting portion includes the second sub-region, and the second pivot door panel includes the fourth sub-region. The adhesive structure includes a first adhesive structure and a second adhesive structure. The first sub-region is connected to the third sub-region through the first adhesive structure, and the second sub-region is connected to the fourth sub-region through the second adhesive structure.

18. The electronic device according to claim 17, characterized in that, The rotating shaft mechanism further includes: a main shaft disposed between the first rotating shaft door plate and the second rotating shaft door plate; The bending portion further includes a first bending portion, which is disposed between the first connecting portion and the second connecting portion; the main shaft is connected to the first bending portion.

19. The electronic device according to claim 17 or 18, characterized in that, The bending portion further includes a second bending portion and a third bending portion. The second bending portion is located between the first support portion and the first connecting portion, and the third bending portion is located between the second support portion and the second connecting portion. The bending direction of the second bending portion is different from that of the first bending portion.

20. A display screen assembly, characterized in that, The display assembly is used in an electronic device including a pivot mechanism, and the display assembly includes: a stacked display screen and a support member; the support member is disposed on a side opposite to the light-emitting surface of the display screen; The support component includes: a bending portion, a first support portion, and a second support portion. When the display screen is in a flattened state, the bending portion is located between the first support portion and the second support portion, and the bending portion is disposed opposite to the rotating shaft mechanism. The bending portion includes a first region with a groove for providing a first adhesive layer, which is used to connect with a second adhesive layer to bond the rotating shaft mechanism.

21. A rotating shaft mechanism, characterized in that, The hinge mechanism is used in an electronic device including a display assembly. The hinge mechanism includes a hinge door panel, the hinge door panel including a second region, the second region having a groove for providing a first adhesive layer, the first adhesive layer being used to connect with a second adhesive layer to bond the display assembly.

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