Folding screen terminal and shell assembly

Abstract

The utility model provides a folding screen terminal and a shell assembly. The folding screen terminal and the shell assembly are used for solving the problem that a sealing black edge of an auxiliary screen edge of an existing folding screen terminal is wide. The folding screen terminal comprises a middle frame, a folding screen, an auxiliary screen, a first colloid and a second colloid. In the thickness direction of the folding screen terminal, the auxiliary screen and the folding screen are supported on the two sides of the middle frame respectively. The auxiliary screen comprises a light-transmitting cover plate and a display panel, and the light-transmitting cover plate is located on the side, away from the folding screen, of the display panel. The middle frame is provided with a first frame section, the first frame section comprises a first part and a second part which are arranged in the width direction of the first frame section, the first part is located on the outer side of the second part, and a sound outlet is formed in the surface, away from the folding screen, of the first part. The surface, facing the folding screen, of the light-transmitting cover plate and the first part are bonded and fixed through first glue. In the thickness direction of the folding screen terminal, the surface, deviating from the folding screen, of the second part is opposite to part of the display panel, and the second part and the display panel are bonded and fixed through a second colloid.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more particularly to a foldable screen terminal and housing assembly. Background Technology

[0002] With the development of electronic devices (such as mobile phones and tablets), foldable screen devices are becoming increasingly popular due to their larger screen display area when unfolded and their compact size when folded, making them easy to carry. However, since most foldable screen devices require unfolding to view information or make calls, this is inconvenient for users. Therefore, some foldable screen devices have begun to incorporate a secondary screen on the back, allowing information to be displayed on the secondary screen when folded, so users can view information without unfolding the device.

[0003] However, the sealed black border around the secondary screen of existing foldable screen terminals is relatively wide, which reduces the overall aesthetics of the device and results in a poor user experience. Utility Model Content

[0004] This application provides a foldable screen terminal and a housing assembly to solve the problem that the sealing black border of the secondary screen edge of existing foldable screen terminals is too wide, affecting the overall aesthetics of the device.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a foldable screen terminal, including a mid-frame, a foldable screen, a secondary screen, a first colloid, and a second colloid.

[0007] In this design, along the thickness direction of the foldable screen terminal, a sub-screen and a foldable screen are supported on opposite sides of the mid-frame. The sub-screen includes a light-transmitting cover and a display panel, with the light-transmitting cover located on the side of the display panel furthest from the foldable screen. The mid-frame has a first frame segment, comprising a first part and a second part arranged along its width direction. The first part is located outside the second part, and a sound outlet is provided on the surface of the first part facing away from the foldable screen. The surface of the light-transmitting cover facing the foldable screen is bonded to the first part using a first adhesive. Along the thickness direction of the foldable screen terminal, the second part is positioned opposite the surface of the foldable screen and partially opposite the display panel, and the second part is bonded to the display panel using a second adhesive.

[0008] In practical applications, since the backlight cover of the secondary screen is generally larger than the display panel, during installation, the portion of the backlight cover protruding from the display panel (hereinafter referred to as the mounting portion) is typically glued to the mid-frame to form a sealing surface, thus fixing and sealing the secondary screen to the mid-frame. After gluing, a sealed black edge is formed around the edge of the secondary screen. However, due to the presence of a sound outlet on one side of the mid-frame, the sound outlet will cut off the area on that edge corresponding to the gluing portion of the backlight cover (hereinafter referred to as the support portion). To ensure the continuity of the sealing surface around the sound outlet, the width of the support portion and the mounting portion is generally increased, effectively allowing the support portion and the mounting portion to bypass the sound outlet without being cut off by it. However, this results in a larger sealed black edge around the secondary screen, reducing the overall aesthetics of the device.

[0009] The foldable screen terminal provided in the first aspect of this application divides a first frame segment with a sound outlet on its middle frame into a first part and a second part. The first and second parts are arranged along the width direction of the first frame segment, and the sound outlet is located at the junction of the first and second parts. The first part is bonded and fixed to the light-transmitting cover plate of the secondary screen by a first adhesive, and the second part is bonded and fixed to the display panel of the secondary screen by a second adhesive. In this way, the display panel of the secondary screen is utilized and bonded and fixed to the first frame segment. Thus, the first adhesive between the light-transmitting cover plate and the first part, and the second adhesive between the display panel and the second part, can form a continuous sealing surface around the sound outlet, ensuring the sealing between the first frame segment and the secondary screen. In other words, the foldable screen terminal provided in this application can reduce the width increase of the support part of the first frame segment and the installation part of the light-transmitting cover plate to ensure the continuity of the sealing surface around the sound outlet. Correspondingly, the width of the sealing black edge around the sound outlet after the secondary screen is installed is also reduced.

[0010] In conjunction with the first aspect, in one possible implementation, the first part includes a first sub-part, a second sub-part, and a third sub-part. The second and third sub-parts are both located between the first and second sub-parts, and along the length of the first frame segment, they are positioned on either side of the sound outlet. Both the second and third sub-parts are bonded and fixed to the light-transmitting cover plate using a first adhesive. This effectively places the sound outlet in the middle of the first frame segment, making the foldable screen terminal more symmetrical and aesthetically pleasing, while also better conforming to ergonomic design.

[0011] In conjunction with the first aspect, in another possible implementation, the first frame segment further includes a third part. The first, second, and third parts are arranged along the width direction of the first frame segment, with the third part located between the first and second parts. The foldable screen terminal also includes a third adhesive, which bonds and fixes the third part to the display panel and / or the light-transmitting cover. In actual production, a gap may exist around the sound outlet between the first adhesive and the display panel and the second adhesive. Foreign objects (dust, liquid, etc.) can enter the foldable screen terminal through this gap. The portion corresponding to this gap on the first frame segment can be considered the aforementioned third part. Therefore, by placing the third adhesive between the third part and the display panel and / or the light-transmitting cover to fill this gap, the entry path of foreign objects is blocked.

[0012] In conjunction with the first aspect, in another possible implementation, the first frame segment further includes a third part. The first, second, and third parts are arranged along the width direction of the first frame segment, with the third part located between the first and second parts. At least one potting hole is provided on the third part, extending through it along the thickness direction of the foldable screen terminal. The foldable screen terminal also includes a fourth adhesive, which bonds and fixes the third part to the display panel and / or the light-transmitting cover. In actual production, a gap may exist around the sound outlet between the first adhesive and the display panel and the second adhesive. Foreign objects (dust, liquid, etc.) can enter the foldable screen terminal through this gap. The portion corresponding to this gap on the first frame segment can be considered the aforementioned third part. Therefore, by providing a potting hole on the third part, after the sub-screen is installed on the mid-frame, the fourth adhesive is injected from the end furthest from the sub-screen through the potting hole to fill the gap, thereby blocking the entry path of foreign objects.

[0013] In conjunction with the first aspect, another possible implementation includes a decorative component in the foldable screen terminal. This component is located on the side of the first frame segment furthest from the sub-screen, and along the thickness of the foldable screen terminal, it covers the potting hole and the edge of the foldable screen. This not only conceals the potting hole and the edge of the foldable screen, improving the overall aesthetics of the device, but also provides some protection for the edges of the foldable screen.

[0014] In conjunction with the first aspect, in another possible implementation, the decorative element has a protruding post on its surface facing the first frame segment, which is inserted into the glue-filling hole. In this way, after the fourth adhesive is filled into the gap through the glue-filling hole, the protruding post on the decorative element can seal the glue-filling hole. Furthermore, the protruding post, in conjunction with the glue-filling hole, can also serve a positioning function, facilitating the positioning of the decorative element on the middle frame during installation.

[0015] In conjunction with the first aspect, another possible implementation involves a limiting step on the inner wall of the glue-filling hole. The foldable screen terminal also includes a fifth adhesive, with the end of the protrusion near the sub-screen bonded to the limiting step via this fifth adhesive. In this way, the decorative component can be fixed to the mid-frame by placing the fifth adhesive between the limiting step and the protrusion. This method of fixing is relatively concealed, eliminating the need for applying glue between the foldable screen and the decorative component, thus avoiding glue overflow defects between the decorative component and the foldable screen.

[0016] In conjunction with the first aspect, in one possible implementation, along the thickness direction of the foldable screen terminal, the first part protrudes to the side away from the foldable screen to form a stepped portion, and the light-transmitting cover plate is supported on the stepped portion. In this way, by forming the stepped portion and supporting the light-transmitting cover plate on it, the distance between the first part and the light-transmitting cover plate in the thickness direction of the foldable screen terminal is effectively reduced, thereby reducing the thickness of the first colloid filling between the first part and the light-transmitting cover plate. Since the first colloid is generally soft and elastic after curing, it exhibits a large deformation under external force. Therefore, reducing the thickness of the first colloid also means reducing the maximum value of its deformation in the thickness direction of the foldable screen terminal. This allows the first part to provide sufficient support for the light-transmitting cover plate, thereby reducing the risk of the light-transmitting cover plate breaking due to excessive deformation at the edge when subjected to impact.

[0017] In addition, with the above structure, the display panel is essentially placed inside the middle frame, meaning the stepped section can also provide some protection for the display panel.

[0018] In conjunction with the first aspect, in another possible implementation, the stepped portion includes a first step and a second step, arranged along the width direction of the first frame segment. The first step is located between the second portion and the second step, and the light-transmitting cover is supported on the first step, with its outer peripheral edge facing the second step. In this way, the first colloid fills the space between the first step and the light-transmitting cover, providing sufficient support for the cover and reducing the risk of breakage due to excessive deformation at the cover's edge upon impact. Since the edge of the cover faces the second step, meaning that in the thickness direction of the foldable screen terminal, the cover is at least partially embedded in the middle frame, and the second step provides some protection to the edge of the cover.

[0019] The first step can be seen as being formed by the aforementioned second and third sub-parts both protruding to the side away from the folding screen, and the second step can be seen as being formed by the aforementioned first sub-part protruding to the side away from the folding screen.

[0020] In conjunction with the first aspect, another possible implementation involves using a solid double-sided adhesive, such as PET double-sided adhesive, foam double-sided adhesive, or OCA optical adhesive. During installation, the second adhesive can be applied to the second part by bonding.

[0021] In another possible implementation, the first adhesive is a liquid adhesive, such as UV adhesive, polyurethane hot melt adhesive, reactive hot melt adhesive, acrylic structural adhesive, etc. During installation, the first adhesive can be applied to the first part by dispensing.

[0022] In conjunction with the first aspect, in another possible implementation, the foldable screen terminal also includes a hinge mechanism. The mid-frame includes a first frame and a second frame, and the hinge mechanism is connected between the first frame and the second frame. The first frame has a first border segment, and the secondary screen is fixed to the first frame. In this way, the first frame and the second frame can rotate in opposite directions relative to the axis of the hinge mechanism, thereby realizing the unfolding or folding of the foldable screen terminal.

[0023] Secondly, embodiments of this application provide a housing assembly, including a middle frame and a pivot mechanism. The middle frame includes a first frame and a second frame, and the pivot mechanism connects the first frame and the second frame. The first frame has a first side border segment, which includes a first portion and a second portion arranged along its own width direction. The first portion is located outside the second portion, and a sound outlet is provided on the first portion.

[0024] In conjunction with the second aspect, in one possible implementation, the first part includes a first sub-part, a second sub-part, and a third sub-part, with the second and third sub-parts located between the first and second sub-parts; along the length of the first frame segment, the second and third sub-parts are located on both sides of the sound outlet.

[0025] In conjunction with the second aspect, in another possible implementation, the first border segment also includes a third part, the first part, the second part and the third part are arranged along the width direction of the first border segment, and the third part is located between the first part and the second part.

[0026] In conjunction with the second aspect, in another possible implementation, the third part has at least one potting hole that extends through the third part along the thickness direction of the housing assembly.

[0027] In conjunction with the second aspect, in another possible implementation, one side of the first part protrudes from the second part along the thickness direction of the housing assembly to form a stepped portion.

[0028] In conjunction with the second aspect, in another possible implementation, the step portion includes a first step and a second step, the first step and the second step being arranged along the width direction of the first border segment, and the first step being located between the second portion and the second step.

[0029] Understandably, the beneficial effects that the housing assembly described in the second aspect and any of its possible implementations above can be referenced to the beneficial effects in the first aspect and any of its possible implementations, and will not be repeated here. Attached Figure Description

[0030] Figure 1 This application provides a structural diagram of a foldable screen terminal according to an embodiment of the present application.

[0031] Figure 2 for Figure 1 A front view of a foldable screen terminal in its unfolded state;

[0032] Figure 3 for Figure 1 A front view of a foldable screen terminal in its folded state;

[0033] Figure 4 An exploded view of a housing assembly provided in an embodiment of this application;

[0034] Figure 5 This is a schematic diagram of the structure of a secondary screen provided in an embodiment of this application;

[0035] Figure 6 for Figure 4 A magnified view of a section at point A in the middle;

[0036] Figure 7 This is a schematic diagram showing the relative positions of the sound outlet and the supporting part on the first frame segment;

[0037] Figure 8 A schematic diagram showing how the support section is widened to bypass the sound outlet;

[0038] Figure 9 A cross-sectional view of the structure of a foldable screen terminal at the sound outlet provided in an embodiment of this application;

[0039] Figure 10 for Figure 9 A cross-sectional diagram of the foldable screen terminal at the sound outlet;

[0040] Figure 11 This application provides a schematic diagram of the region division of a first border segment.

[0041] Figure 12 A cross-sectional schematic diagram showing the first gap formed between the display panel and the second colloid and the first colloid, respectively;

[0042] Figure 13 This is a schematic diagram illustrating another region division of the first border segment provided in an embodiment of this application;

[0043] Figure 14 A partial structural diagram of a foldable screen terminal provided in an embodiment of this application;

[0044] Figure 15 This is a schematic diagram showing the location of the second gap;

[0045] Figure 16 A partial structural diagram of another foldable screen terminal provided in an embodiment of this application;

[0046] Figure 17 A partial structural schematic diagram of another foldable screen terminal provided in an embodiment of this application;

[0047] Figure 18 A cross-sectional view of the structure of another foldable screen terminal at the sound outlet provided in an embodiment of this application;

[0048] Figure 19 for Figure 18 A cross-sectional diagram of the foldable screen terminal at the sound outlet;

[0049] Figure 20 A schematic diagram of the structure forming a stepped portion on the first frame segment;

[0050] Figure 21 This is a cross-sectional view of the structure of a foldable screen terminal at the potting hole, provided in an embodiment of this application.

[0051] Figure label:

[0052] 01. Foldable screen terminal; 10. Foldable screen; 11. First display area; 12. Second display area; 13. Third display area; 20. Housing assembly; 21. Rotating hinge mechanism; 211. Central beam; 212. Door panel; 212a. First door panel; 212b. Second door panel; 22. Middle frame; 22a. First frame body; 22b. Second frame body; 210. First frame segment; 210a. First part; 2101. First sub-part; 2102. Second sub-part; 2103. Third sub-part; 210b. Second part; 210c. Third part; 210c1. Left third part; 210c2. Right third part; 210d. Support part; 220. Step section; 221. First step; 221a. Left first step; 221b. Right first step; 222. Second step; 201. First bonding surface; 202. Second bonding surface; 203. Third bonding surface; 30. Sub-screen; 31. Light-transmitting cover plate; 31a. Mounting part; 32. Display panel; 40. Earpiece; 51. First adhesive; 52. Second adhesive; 53. Third adhesive; 54. Fourth adhesive; 55. Fifth adhesive; 60. Decorative part; 60a. Protruding post; 100. Sound outlet; 200. Sound transmission channel; 300a. First gap; 300b. Second gap; 400. Glue filling hole; 400a. Limiting step. Detailed Implementation

[0053] To make the purpose, technical solution, and advantages of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0054] In the description of this application, it should be clarified that the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," and "horizontal," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are merely for the convenience of describing this application, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this application. Similarly, the term "quantity" should not be construed as a limitation of this application.

[0055] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] This application provides a foldable screen terminal, which can be an electronic device with a foldable screen, such as a foldable screen mobile phone. The foldable screen mobile phone can be a mobile phone with an outward-folding display panel or a mobile phone with an inward-folding display panel. The following description uses a mobile phone with an inward-folding display panel as an example of a foldable screen terminal.

[0057] Specifically, please see Figure 1 , Figure 2 and Figure 3 As shown, Figure 1 This is a structural diagram of a foldable screen terminal 01 provided in an embodiment of this application. Figure 2 for Figure 1 The foldable screen terminal 01 in the picture is shown in its unfolded state (along the positive Y-axis). Figure 3 for Figure 1 The image shows a front view (along the positive Y-axis) of the foldable screen terminal 01 in its folded state. The foldable screen terminal 01 may include a foldable screen 10, a housing assembly 20, and a sub-screen 30. The foldable screen 10 and the sub-screen 30 are respectively supported and attached to both sides of the housing assembly 20, and the housing assembly 20 can drive the foldable screen 10 to rotate between the unfolded state and the folded state.

[0058] Understandable Figure 1 and Figure 2 The diagram only schematically shows some of the components included in the foldable screen terminal 01. The actual shape, size, position, and structure of the components are not limited by the structure shown in the diagram.

[0059] For the sake of clarity in the following embodiments, an XYZ coordinate system is established. When the foldable screen terminal 01 is in the unfolded state, the width direction of the foldable screen terminal 01 is defined as the X-axis direction, the length direction of the foldable screen terminal 01 as the Y-axis direction, and the thickness direction of the foldable screen terminal 01 as the Z-axis direction. It should be noted that the coordinate system of the foldable screen terminal 01 can be flexibly set according to actual needs. This application only provides an example and should not be considered as constituting a special limitation on this application.

[0060] The aforementioned foldable screen 10 may include a first display area 11, a second display area 12, and a third display area 13, with the third display area 13 disposed between the first display area 11 and the second display area 12. When the foldable screen terminal 01 is in a folded state, the third display area 13 of the foldable screen 10 is bent, and the first display area 11 and the second display area 12 are positioned opposite each other.

[0061] The aforementioned housing assembly 20 is used to protect the internal components of the foldable screen terminal 01. Please continue reading... Figure 1 , Figure 2 and Figure 3 and combined Figure 4 As shown, Figure 4 An exploded view of the structure of a housing assembly 20 provided in an embodiment of this application.

[0062] The housing assembly 20 may include a pivot mechanism 21 and a middle frame 22. The middle frame 22 includes a first frame 22a and a second frame 22b, with the pivot mechanism 21 connecting the first frame 22a and the second frame 22b. The pivot mechanism 21 may include a central beam 211 and a door panel 212, with the door panel 212 rotatably connected to the central beam 211. Two door panels 212 are provided, namely a first door panel 212a and a second door panel 212b. The first door panel 212a and the second door panel 212b are located on opposite sides of the central beam 211 along its length direction (parallel to the Y-axis), and the rotation direction of the first door panel 212a is opposite to that of the second door panel 212b. The first frame 22a is fixedly connected to the first door panel 212a, and the second frame 22b is fixedly connected to the second door panel 212b.

[0063] The rotational connection between the first door panel 212a and the second door panel 212b and the central beam 211 can be achieved by using an arc-shaped groove and an arc-shaped slider, allowing the first door panel 212a or the second door panel 212b to rotate relative to the central beam 211 along the arc-shaped groove; alternatively, the first door panel 212a or the second door panel 212b can also be rotated with the central beam 211 by a rotating shaft and a shaft hole, and the first door panel 212a and the second door panel 212b can be meshed by a gear set, so that the first door panel 212a and the second door panel 212b can rotate synchronously and in opposite directions, that is, the first frame 22a and the second frame 22b can also rotate synchronously and in opposite directions, thereby allowing the folding screen terminal 01 to rotate and switch between the unfolded state and the folded state.

[0064] The first frame 22a has a first bonding surface 201, on which the first display area 11 of the foldable screen 10 is supported and bonded. The second frame 22b has a second bonding surface 202, on which the second display area 12 of the foldable screen 10 is supported and bonded. The pivot mechanism 21 has a third bonding surface 203, on which the third display area 13 of the foldable screen 10 is supported and bonded. The first frame 22a and the second frame 22b are rotatably connected by the pivot mechanism 21, so that the foldable screen terminal 01 can rotate and switch between the unfolded state and the folded state.

[0065] With the foldable screen terminal 01 in its unfolded state, please continue to refer to... Figure 1 and Figure 2 As shown, Figure 1 and Figure 2 The foldable screen terminal 01 is in the unfolded state. The first bonding surface 201, the second bonding surface 202, and the third bonding surface 203 are on the same plane, allowing the foldable screen 10 to be fully unfolded. That is, the first display area 11, the second display area 12, and the third display area 13 of the foldable screen 10 are on the same plane, ensuring the flatness of the foldable screen 10. In this state, the foldable screen terminal 01 can achieve a large-screen display, providing a better user experience.

[0066] With the aforementioned foldable screen terminal 01 in a folded state, please continue to refer to... Figure 3 As shown, the first display area 11 and the second display area 12 of the foldable screen 10 are opposite each other, and the third display area 13 is bent. The housing assembly 20 protects the foldable screen 10, that is, the foldable screen 10 is located between the first frame 22a and the second frame 22b of the housing assembly 20. In this state, the foldable screen 10 is not visible to the user, to prevent the foldable screen 10 from being scratched or damaged, thereby providing effective protection for the foldable screen 10. For example, when the mobile phone is not in use, the terminal can be folded to avoid screen damage.

[0067] When the foldable screen terminal 01 is in a folded state, the secondary screen 30 can be used to display images or information, allowing users to operate the terminal with one hand. This makes the usage scenarios of the foldable screen terminal 01 more diverse and helps to further improve the user experience. For example, when a user's App account receives a message, the foldable screen terminal 01 can display a message pop-up on the secondary screen 30, allowing the user to see the message content through the secondary screen 30 without having to unfold the foldable screen terminal 01 again.

[0068] The aforementioned secondary screen 30 is a flat screen. The secondary screen 30 can be located on the side of the first frame 22a away from the folding screen 10, or it can be located on the side of the second frame 22b away from the folding screen 10. This application does not impose any special limitations on this. For ease of understanding, the following examples illustrate the situation with the secondary screen 30 located on the first frame 22a.

[0069] Please see Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of a secondary screen 30 provided in an embodiment of this application. The secondary screen 30 may include a display panel 32 and a light-transmitting cover plate 31. The light-transmitting cover plate 31 is located on the side of the display panel 32 away from the folding screen 10, and the light-transmitting cover plate 31 is adhered to the first frame 22a. The display panel 32 may be an organic light-emitting diode (OLED) display panel, an active-matrix organic light-emitting diode (AMOLED) display panel, a mini light-emitting diode display panel, a micro light-emitting diode display panel, a micro organic light-emitting diode display panel, a quantum dot light-emitting diode (QLED) display panel, a liquid crystal display (LCD), etc.

[0070] In addition, when the foldable screen terminal 01 is in the folded state, users can make and receive calls by operating the secondary screen 30 without having to unfold the foldable screen terminal 01 again.

[0071] At this point, please return to the previous page. Figures 1 to 3 As shown, the aforementioned foldable screen terminal 01 may also include an earpiece 40 and a microphone, the earpiece 40 and the microphone ( Figures 1 to 3 (Not shown in the image) are all located inside the first frame 22a. Please refer to [the image for further details]. Figure 4 and combined Figure 6 As shown, Figure 6 for Figure 4 A magnified view of part A in the middle. The first frame 22a has a first frame segment 210. The first frame segment 210 is provided with a sound outlet 100 away from the surface of the folding screen 10, and a sound transmission channel 200 is also provided on the first frame segment 210. The earpiece 40 is located at one end of the sound transmission channel 200, and the other end of the sound transmission channel 200 is connected to the sound outlet 100. The sound emitted by the earpiece 40 is transmitted to the outside of the folding screen terminal 01 through the sound transmission channel 200 and the sound outlet 100 in sequence, so that it can be heard by the user.

[0072] It is understood that the aforementioned first border segment 210 can be any border segment of the first frame 22a, and this application does not impose any special limitations on it. For ease of understanding, the following will refer to the first border segment 210 as... Figure 4 The example is taken as the upper border segment of the first frame 22a in the shown orientation.

[0073] In practical applications, please refer back to [link / reference]. Figure 5 As shown, since the light-transmitting cover plate 31 of the secondary screen 30 is generally larger than the display panel 32, when installing the secondary screen 30, the part of the light-transmitting cover plate 31 that protrudes from the display panel 32 (hereinafter referred to as the installation part 31a) is usually attached to the first frame 22a to form a sealing surface, thereby achieving the fixation and sealing between the secondary screen 30 and the first frame 22a, and after bonding, a sealing black edge will be formed at the edge of the secondary screen 30.

[0074] The bonding of the mounting portion 31a of the light-transmitting cover 31 to the first frame segment 210 of the first frame 22a will be described. Due to the presence of the sound outlet 100 on the first frame segment 210, please refer to... Figure 7 As shown, Figure 7 This is a schematic diagram showing the relative positions of the sound outlet 100 and the support portion 210d on the first frame segment 210 (view along the positive Z-axis). The sound outlet 100 will attach the portion of the first frame segment 210 that is correspondingly bonded to the mounting portion 31a of the light-transmitting cover 31 (hereinafter referred to as the support portion 210d). Figure 7 The area shown by the dashed line is cut off, which results in the inability to form a continuous sealing surface between the mounting part 31a and the support part 210d, that is, sealing failure occurs around the sound outlet 100.

[0075] For the reasons mentioned above, please refer to Figure 8 As shown, Figure 8This is a schematic diagram showing the widened support portion 210d bypassing the sound outlet 100 (view along the positive Z-axis). To ensure the continuity of the sealing surface around the sound outlet 100, the width of the support portion 210d is generally increased. This allows the support portion 210d to bypass the sound outlet 100 from the side closest to the inside of the first frame 22a without being interrupted by the sound outlet 100. Correspondingly, the width of the mounting portion 31a of the light-transmitting cover 31 also needs to be increased. Then, the mounting portion 31a is bonded to the support portion 210d to form a continuous sealing surface. However, this results in a larger width of the sealing black border at the edge of the secondary screen 30, leading to a decrease in the overall aesthetics of the device.

[0076] To address the aforementioned issues, this application provides another foldable screen terminal 01. The foldable screen terminal 01 includes a first colloid 51, a second colloid 52, the aforementioned housing assembly 20, the aforementioned foldable screen 10, and the aforementioned sub-screen 30. The distribution and connection method of the housing assembly 20, the foldable screen 10, and the sub-screen 30 are described above and will not be repeated here.

[0077] Please see Figure 9 , Figure 10 and Figure 11 As shown, Figure 9 This is a cross-sectional view of the structure of a foldable screen terminal 01 at the sound outlet 100, provided in an embodiment of this application. Figure 10 for Figure 9 A cross-sectional view of the foldable screen terminal 01 at the sound outlet 100 (parallel to the YZ plane). Figure 11 This is a schematic diagram of the region division of a first border segment 210 provided in an embodiment of this application (view along the positive Z-axis).

[0078] The first frame segment 210 of the first frame 22a includes a first part 210a and a second part 210b arranged along its width direction. The first part 210a is located outside the second part 210b, and the sound outlet 100 is located in the first part 210a. The mounting portion 31a of the light-transmitting cover 31 is bonded and fixed to the first part 210a with the surface facing the folding screen 10 by a first adhesive 51. Along the thickness direction of the folding screen terminal 01 (parallel to the Z-axis), the second part 210b is disposed opposite to the surface of the folding screen 10 and is positioned opposite to a portion of the display panel 32, and the second part 210b is bonded and fixed to the display panel 32 by a second adhesive 52.

[0079] It should be noted that the aforementioned first border segment 210 has a length direction, a width direction, and a thickness direction, with the length direction of the first border segment 210 being its extension direction (i.e., in...). Figures 9 to 11 (parallel to the X-axis direction), the thickness direction of the first frame segment 210 is also the thickness direction of the foldable screen terminal 01 (i.e., in...). Figures 9 to 11(parallel to the Z-axis direction), the width direction of the first border segment 210 is perpendicular to its own length and thickness directions (i.e., in...) Figures 9 to 11 (Parallel to the Y-axis direction).

[0080] The first frame 22a can form a receiving cavity for accommodating various components of the foldable screen terminal 01. The side of the first frame 22a closest to the receiving cavity is the inner side of the first frame 22a, and the side of the first frame 22a furthest from the receiving cavity is the outer side of the first frame 22a. Therefore, the first part 210a being located outside the second part 210b means that the first part 210a is located on the side of the second part 210b furthest from the receiving cavity.

[0081] The second part 210b, which is opposite to the surface of the folding screen 10, is positioned opposite to the partial display panel 32. This means that the projection of the partial display panel 32 onto the first frame segment 210 along the Z-axis overlaps with the surface of the second part 210b that is opposite to the surface of the folding screen 10.

[0082] In addition, the first adhesive 51 can be a liquid adhesive, such as UV (Ultraviolet Rays) adhesive, pressure-sensitive adhesive, polyurethane hot melt adhesive, reactive hot melt adhesive, acrylic structural adhesive, etc. During installation, the first adhesive 51 can be applied to the first part 210a by dispensing.

[0083] The second adhesive 52 can be a solid double-sided adhesive, such as PET (Polyethylene terephthalate) double-sided adhesive, foam double-sided adhesive, OCA optical adhesive (Optically Clear Adhesive), etc. During installation, the second adhesive 52 can be applied to the second part 210b by adhesive bonding.

[0084] In this way, the display panel 32 of the secondary screen 30 is utilized and bonded to the first frame segment 210. Through the first adhesive 51 between the light-transmitting cover 31 and the first part 210a, and the second adhesive 52 between the display panel 32 and the second part 210b, a continuous sealing surface can be formed around the sound outlet 100, ensuring the seal between the first frame segment 210 and the secondary screen 30. In other words, the aforementioned foldable screen terminal 01 can reduce the width increase required by the support portion 210d of the first frame segment 210 and the mounting portion 31a of the light-transmitting cover 31 to ensure the continuity of the sealing surface around the sound outlet 100. Correspondingly, the width of the sealing black border around the sound outlet 100 after the secondary screen 30 is installed is also reduced.

[0085] It is understood that the aforementioned sound outlet 100 can be located at the end of the first frame segment 210 or at the middle of the first frame segment 210, and this application does not impose any special limitation on this. For ease of understanding, the embodiments of this application are all illustrated by assuming that the sound outlet 100 is located at the middle of the first frame segment 210.

[0086] In this case, please continue to see Figure 11 As shown, the first part 210a may include a first sub-part 2101, a second sub-part 2102, and a third sub-part 2103. The second sub-part 2102 and the third sub-part 2103 are both located between the first sub-part 2101 and the second part 210b, and are positioned along the length of the first frame segment 210 (parallel to the X-axis). The second sub-part 2102 and the third sub-part 2103 are respectively located on both sides of the sound outlet 100. Both the second sub-part 2102 and the third sub-part 2103 are bonded and fixed to the light-transmitting cover plate 31 using a first adhesive 51. This makes the secondary screen 30 side of the foldable screen terminal 01 more symmetrical and aesthetically pleasing, while also being more ergonomically designed.

[0087] Please see Figure 12 As shown, Figure 12 This is a cross-sectional schematic diagram (parallel to the YZ plane) showing the first gap 300a formed between the display panel 32 and the second colloid 52 and the first colloid 51, respectively. In actual production, to ensure bonding strength and sealing effect, the first colloid 51 used has a high viscosity and low fluidity. Therefore, there may be a situation where the first colloid 51 cannot be tightly bonded to the display panel 32 and the second colloid 52. That is, there may be gaps between the display panel 32 and the second colloid 52 and the first colloid 51 on both sides of the sound outlet 100. This gap can be called the first gap 300a. Foreign objects (dust, liquid, etc.) from the outside can enter the foldable screen terminal 01 through the first gap 300a from the sound outlet 100.

[0088] The portion of the first gap 300a corresponding to the first frame segment 210 can be considered as the third portion 210c. Please refer to [link / reference]. Figure 13 As shown, Figure 13 This is a schematic diagram of another region division of the first border segment 210 provided in an embodiment of this application (view along the positive Z-axis). That is, the first border segment 210 may further include a third part 210c, with the first part 210a, the second part 210b, and the third part 210c arranged along the width direction of the first border segment 210. In this case, there are two third parts 210c: a left third part 210c1 and a right third part 210c2. The left third part 210c1 is located between the second sub-part 2102 and the second part 210b, and the right third part 210c2 is located between the third sub-part 2103 and the second part 210b.

[0089] At this time, please see Figure 14 As shown, Figure 14 This is a partial structural diagram of a foldable screen terminal 01 provided in an embodiment of this application. The foldable screen terminal 01 may further include a third adhesive 53, with the left third portion 210c1 and the right third portion 210c2 both bonded and fixed to the display panel 32 and / or the light-transmitting cover plate 31 by the third adhesive 53. That is, the third adhesive 53 fills the aforementioned first gap 300a, thereby blocking the entry path of foreign objects.

[0090] The third colloid 53 and the second colloid 52 may be the same or different, and this application does not make any special restrictions on this.

[0091] In some cases, after the mounting portion 31a of the light-transmitting cover 31 is attached to the first frame segment 210, the third adhesive 53 on the third portion 210c is not evenly compressed and spread out, and the third adhesive 53 does not completely seal the first gap 300a. Please refer to [link / reference needed]. Figure 15 As shown, Figure 15 This is a schematic diagram showing the location of the second gap 300b. That is, there may be some small gaps remaining between the third colloid 53 and the first colloid 51, or between the display panel 32 and the second colloid 52 and the third colloid 53 respectively. These gaps can be called the second gap 300b, and the second gap 300b is a part of the first gap 300a.

[0092] At this point, to further improve the sealing around the sound outlet 100, please refer to... Figure 16 As shown, Figure 16 This is a partial structural diagram of another foldable screen terminal 01 provided in an embodiment of this application. A potting hole 400 is provided on the third part 210c, and the potting hole 400 penetrates the third part 210c along the thickness direction of the foldable screen terminal 01.

[0093] Correspondingly, the foldable screen terminal 01 may also include a fourth colloid 54. The fourth colloid 54 may be a colloid with low viscosity and good flowability, so that after the light-transmitting cover 31 is bonded to the first frame segment 210, the fourth colloid 54 can be injected into the space between the first frame segment 210 and the light-transmitting cover 31 through the glue-filling hole 400 from the side of the first frame segment 210 away from the sub-screen 30 to fill the second gap 300b, thereby completely blocking the path of foreign objects from the sound outlet 100 into the interior of the first frame 22a.

[0094] It is understood that one or more potting holes 400 can be provided on each third part 210c, and this application does not impose any special limitations on this. The position of the potting hole 400 on the corresponding third part 210c can be adjusted appropriately according to the actual situation, so that the fourth adhesive 54 can be injected to fill and seal the second gap 300b, thereby completely blocking the entry path of foreign objects.

[0095] For example, please continue to see Figure 16 As shown, two third colloids 53 are spaced apart on both the left third part 210c1 and the right third part 210c2. A glue-filling hole 400 is opened on both the left third part 210c1 and the right third part 210c2, and the glue-filling hole 400 is located between the two third colloids 53. In this way, the fourth colloid 54 injected through the glue-filling hole 400 can simultaneously fill and seal the second gap 300b on both sides of the glue-filling hole 400.

[0096] In other embodiments, please refer to Figure 17 As shown, Figure 17 This is a partial structural diagram of another foldable screen terminal 01 provided in an embodiment of this application. In this case, it is not necessary to apply the third colloid 53 on the third part 210c, but only the fourth colloid 54 injected through the glue-filling hole 400 is used to fill the first gap 300a between the first colloid 51 and the display panel 32 and the second colloid 52, thereby blocking the entry path of foreign objects.

[0097] Based on the above, please refer to Figure 18 and Figure 19 As shown, Figure 18 This is a cross-sectional view of the structure of another foldable screen terminal 01 provided in this application embodiment at the sound outlet 100. Figure 19 for Figure 18 A cross-sectional schematic diagram of the foldable screen terminal 01 at the sound outlet 100.

[0098] Along the thickness direction of the foldable screen terminal 01, the first part 210a of the first frame segment 210 moves away from the foldable screen 10. Figure 18 A step portion 220 is formed by a protrusion on one side (not shown), and the mounting portion 31a of the light-transmitting cover plate 31 is supported on the step portion 220. In this way, by forming the step portion 220 and supporting the mounting portion 31a of the light-transmitting cover plate 31 on the step portion 220, the vertical distance between the first portion 210a of the first frame segment 210 and the mounting portion 31a of the light-transmitting cover plate 31 is reduced, thereby reducing the thickness of the first colloid 51 filled between the first portion 210a and the light-transmitting cover plate 31.

[0099] Since the first colloid 51 is generally made of liquid adhesive, it is generally soft and elastic after curing. When subjected to external force, it also produces a large deformation. Therefore, the reduction in the thickness of the first colloid 51 means that the maximum value of its deformation in the thickness direction of the foldable screen terminal 01 is reduced. This allows the first part 210a to provide sufficient support for the mounting part 31a of the light-transmitting cover 31, thereby reducing the risk of the light-transmitting cover 31 breaking due to excessive deformation when subjected to impact.

[0100] In addition, under the above structure, it is equivalent to placing the display panel 32 inside the first frame 22a, that is, in the direction perpendicular to the Z-axis, the step portion 220 can also play a certain protective role for the display panel 32.

[0101] For details, please continue to see Figure 18 and Figure 19 and combined Figure 20 As shown, Figure 20 This is a structural schematic diagram showing the step portion 220 formed on the first frame segment 210. The step portion 220 includes a first step 221 and a second step 222. There are two first steps 221, namely a left first step 221a and a right first step 221b. The left first step 221a is formed by the second sub-part 2102 protruding away from the folding screen 10. The right first step 221b is formed by the third sub-part 2103 protruding away from the folding screen 10. The second step 222 is formed by the first sub-part 2101 protruding away from the folding screen 10.

[0102] During installation, the mounting portion 31a of the light-transmitting cover 31 is supported on the left first step 221a and the right first step 221b, with the outer periphery of the light-transmitting cover 31 facing the second step 222. In this way, the first colloid 51 fills the space between the first step 221 and the light-transmitting cover 31, providing sufficient support and reducing the risk of breakage due to excessive deformation at the edge of the light-transmitting cover 31 under impact. Since the edge of the light-transmitting cover 31 faces the second step 222, it means that in the thickness direction of the foldable screen terminal 01, the light-transmitting cover 31 is at least partially embedded in the middle frame 22, and the second step 222 provides some protection to the edge of the light-transmitting cover 31.

[0103] At this time, the first gap 300a is formed between the first colloid 51 and the first step 221 and the display panel 32 and the second colloid 52. The second gap 300b is formed between the third colloid 53 and the first colloid 51 and the first step 221, or between the third colloid 53 and the display panel 32 and the second colloid 52.

[0104] In some embodiments, see Figure 21 As shown, Figure 21 This is a cross-sectional view of a foldable screen terminal 01 at the potting hole 400, provided in an embodiment of this application. The foldable screen terminal 01 may also include a decorative member 60. The decorative member 60 is located on the side of the first frame segment 210 away from the sub-screen 30, and in the thickness direction of the foldable screen terminal 01 (parallel to the Z-axis), the decorative member 60 can cover the potting hole 400 and the edge of the foldable screen 10.

[0105] In this way, the decorative part 60 not only covers the potting hole 400 and the edge of the folding screen 10, which helps to improve the overall aesthetics of the device, but also provides some protection for the edge of the folding screen 10.

[0106] Further reading is available upon request. Figure 21 As shown, the decorative part 60 is also provided with a protrusion 60a on the surface facing the first frame segment 210, and the protrusion 60a is inserted into the glue-filling hole 400.

[0107] It is understandable that the number of protrusions 60a corresponds to the number of potting holes 400 on the third part 210c of the first frame segment 210.

[0108] In this way, after the fourth adhesive 54 is filled into the first gap 300a through the glue-filling hole 400, the glue-filling hole 400 can be sealed by the protrusion 60a on the decorative part 60. Furthermore, the protrusion 60a and the glue-filling hole 400 can also play a positioning role, which facilitates the positioning of the decorative part 60 on the first frame 22a during installation.

[0109] In another possible implementation, please see [link to relevant documentation]. Figure 21 As shown, a limiting step 400a is provided on the inner wall of the glue-filling hole 400. The folding screen terminal 01 also includes a fifth adhesive 55, and the end of the protrusion 60a near the sub-screen 30 is bonded and fixed to the limiting step 400a by the fifth adhesive 55. In this way, the decorative part 60 can be fixed to the first frame 22a by setting the fifth adhesive 55 between the limiting step 400a and the protrusion 60a. The fixing method is relatively concealed, and there is no need to apply glue between the folding screen 10 and the decorative part 60, thereby avoiding the phenomenon of glue overflow between the decorative part 60 and the folding screen 10.

[0110] The secondary screen 30 of the foldable screen terminal 01 is as described above. Figures 18 to 20 The bonding process on the first frame segment 210 is as follows:

[0111] The first step is to attach the second adhesive 52 (solid double-sided tape) to the second part 210b of the first frame segment 210;

[0112] The second step is to apply the third colloid 53 (liquid adhesive) to the third part 210c1 on the left and the third part 210c2 on the right of the first border segment 210 respectively.

[0113] The third step is to apply the first colloid 51 (liquid adhesive) to the first step 221a (second sub-part 2102) on the left side and the first step 221b (third sub-part 2103) on the right side of the first frame segment 210.

[0114] The order of the three steps mentioned above can be adjusted according to actual production needs, and will not be elaborated further here.

[0115] The fourth step is to attach the secondary screen 30 to the first frame 22a and maintain pressure.

[0116] Fifth step: From the side of the first frame segment 210 away from the sub-screen 30, inject the fourth adhesive 54 (liquid adhesive) through the potting hole 400 to fill and seal the second gap 300b, and the sub-screen 30 is installed.

[0117] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0118] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology 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. A foldable screen terminal, characterized in that, include: Mid-frame; The foldable screen and the sub-screen are respectively supported on both sides of the middle frame along the thickness direction of the foldable screen terminal; the sub-screen includes a light-transmitting cover plate and a display panel, and the light-transmitting cover plate is located on the side of the display panel away from the foldable screen; The middle frame has a first border segment, which includes a first part and a second part arranged along its own width direction. The first part is located outside the second part, and the first part has a sound outlet on the surface away from the folding screen. The first colloid is used to bond and fix the light-transmitting cover plate to the first part on the surface of the folding screen. The second colloid is arranged along the thickness direction of the foldable screen terminal. The second part is disposed opposite to the surface of the foldable screen and opposite to a portion of the display panel, and the second part is bonded and fixed to the display panel by the second colloid.

2. The foldable screen terminal according to claim 1, characterized in that, The first part includes a first sub-part, a second sub-part, and a third sub-part, with the second sub-part and the third sub-part both located between the first sub-part and the second part; along the length of the first frame segment, the second sub-part and the third sub-part are respectively located on both sides of the sound outlet; the second sub-part and the third sub-part are both bonded and fixed to the light-transmitting cover plate by the first adhesive.

3. The foldable screen terminal according to claim 1, characterized in that, The first border segment further includes a third part, the first part, the second part and the third part are arranged along the width direction of the first border segment, and the third part is located between the first part and the second part; The foldable screen terminal also includes a third colloid, and the third part is bonded and fixed to the display panel and / or the light-transmitting cover plate by the third colloid.

4. The foldable screen terminal according to claim 3, characterized in that, At least one potting hole is provided on the third part, and the potting hole penetrates the third part along the thickness direction of the foldable screen terminal; The foldable screen terminal also includes a fourth colloid, and the third part is bonded and fixed to the display panel and / or the light-transmitting cover plate by the fourth colloid.

5. The foldable screen terminal according to claim 4, characterized in that, The foldable screen terminal also includes a decorative element located on the side of the first frame segment away from the sub-screen, and in the thickness direction of the foldable screen terminal, the decorative element covers the potting hole and the edge of the foldable screen.

6. The foldable screen terminal according to claim 5, characterized in that, The decorative component has a protruding post on the surface facing the first frame segment, and the protruding post is inserted into the glue-filling hole.

7. The foldable screen terminal according to claim 6, characterized in that, A limiting step is provided on the inner wall of the glue-filling hole; The foldable screen terminal also includes a fifth adhesive, and the end of the protrusion near the sub-screen is bonded and fixed to the limiting step by the fifth adhesive.

8. The foldable screen terminal according to any one of claims 1 to 7, characterized in that, Along the thickness direction of the foldable screen terminal, the first part protrudes to the side away from the foldable screen to form a stepped portion, and the light-transmitting cover plate is supported on the stepped portion.

9. The foldable screen terminal according to claim 8, characterized in that, The stepped portion includes a first step and a second step, the first step and the second step are arranged along the width direction of the first frame segment, and the first step is located between the second portion and the second step. The light-transmitting cover is supported on the first step, and the outer peripheral edge of the light-transmitting cover is opposite to the second step.

10. The foldable screen terminal according to any one of claims 1 to 7, characterized in that, The second colloid is a solid double-sided adhesive.

11. The foldable screen terminal according to any one of claims 1 to 7, characterized in that, The first colloid is a liquid adhesive.

12. The foldable screen terminal according to any one of claims 1 to 7, characterized in that, The foldable screen terminal also includes a hinge mechanism. The middle frame includes a first frame and a second frame. The hinge mechanism is connected between the first frame and the second frame. The first frame has a first border segment. The sub-screen is fixed on the first frame.

13. A housing assembly, characterized in that, include: Rotating shaft mechanism; The middle frame includes a first frame and a second frame, and the pivot mechanism is connected between the first frame and the second frame; The first frame has a first border segment, which includes a first part and a second part arranged along its own width direction. The first part is located outside the second part, and the first part is provided with a sound outlet.

14. The housing assembly according to claim 13, characterized in that, The first part includes a first sub-part, a second sub-part, and a third sub-part, with the second sub-part and the third sub-part both located between the first sub-part and the second part; along the length direction of the first frame segment, the second sub-part and the third sub-part are respectively located on both sides of the sound outlet.

15. The housing assembly according to claim 13, characterized in that, The first border segment further includes a third part, the first part, the second part and the third part are arranged along the width direction of the first border segment, and the third part is located between the first part and the second part.

16. The housing assembly according to claim 15, characterized in that, At least one potting hole is provided on the third part, and the potting hole penetrates the third part along the thickness direction of the housing assembly.

17. The housing assembly according to any one of claims 13 to 16, characterized in that, Along the thickness direction of the housing assembly, one side of the first portion protrudes from the second portion to form a stepped portion.

18. The housing assembly according to claim 17, characterized in that, The step portion includes a first step and a second step, the first step and the second step are arranged along the width direction of the first border segment, and the first step is located between the second portion and the second step.

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