Display module and electronic equipment with main screen driving secondary screen to move at certain angle

Abstract

The application relates to a display module and electronic equipment, which are used for driving a secondary screen to move at a certain angle by a primary screen, and the display module comprises a rotating shaft, a shell which is turned up and down around the center line of the rotating shaft from the bottom, a primary screen and a secondary screen which are arranged on the shell respectively, a locking assembly, a lifting assembly and a linkage assembly. In one aspect, the secondary screen is unfolded or folded by the lifting movement of the primary screen, the use in a narrow space is facilitated, the secondary screen can be spliced with the primary screen up and down after being unfolded to form a complete large screen, and the use demand of a large screen of a user is met. In another aspect, the lifting movement of the primary screen can drive the secondary screen to move only at a certain angle, so that the secondary screen is effectively prevented from being accidentally opened to cause bumping or damage. In addition, the movement space of the secondary screen can be reduced, the thickness of the electronic equipment is effectively reduced, the light and thin design is realized, and the use experience of a user is improved.

Description

Technical Field

[0001] This invention belongs to the field of electronic product accessories, specifically relating to a display module in which the main screen drives the secondary screen to move at a certain angle, and also relating to an electronic device using the display module. Background Technology

[0002] With continuous technological innovation and development, traditional single-screen laptops are increasingly unable to meet the needs of some users. Therefore, some laptops with dual or triple screens have appeared on the market to meet users' multi-screen usage needs.

[0003] Currently, most dual-screen laptops on the market have a secondary screen housed within the casing of the main screen, and the secondary screen can be pulled out or retracted to one or both sides using a sliding mechanism.

[0004] However, in actual use, existing dual-screen laptops have the following drawbacks:

[0005] 1. When the secondary screen is unfolded, it generally causes the entire screen to extend to both sides, making it inconvenient to use in narrow spaces. At the same time, the secondary screen is generally used as an independent screen after unfolding, and cannot form a complete large screen with the main screen, making it difficult to truly meet the user's large screen usage needs.

[0006] 2. During the process of opening or closing the main screen, the secondary screen may be left open due to operational errors, which can easily cause damage from bumps and knocks.

[0007] 3. In order to accommodate the movement of the secondary screen, the storage space needs to be very large, resulting in a thicker and heavier laptop, which leads to a poor user experience. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an improved display module in which the main screen drives the secondary screen to move at a certain angle.

[0009] In addition, the present invention also provides an electronic device.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0011] A display module that allows a main screen to drive a secondary screen to move at a certain angle includes a hinge, a housing that flips up and down around the center line of the hinge from the bottom, and a main screen and a secondary screen respectively mounted on the housing. The display module also includes a locking component, a lifting component, and a linkage component. The locking component includes a locking rod movably connected to the hinge, which extends or retracts synchronously as the housing flips up and down around the center line of the hinge. The lifting component includes a lifting module fixedly connected to the main screen and capable of lifting and lowering, and a locking module fixedly connected to the lifting module. It has a locking groove that matches the locking rod; the linkage component includes a linkage module that moves synchronously with the lifting module. A critical angle θ is defined. When the housing flips between 0° and θ, the locking rod extends and partially or completely inserts into the locking groove, and the lifting module and the main screen are locked together. The secondary screen is then fixed and hidden inside the main screen. When the housing flips at an angle greater than θ, the locking rod retracts and disengages from the locking groove. As the main screen and the lifting module move up and down, the linkage module synchronously drives the secondary screen to move inward and outward and splice it vertically with the main screen, or the linkage module synchronously drives the secondary screen to move inward and hide it inside the main screen.

[0012] According to a specific embodiment and preferred aspect of the present invention, the area of ​​the main screen is s1, and the area of ​​the secondary screen is s2, where 1.5s2 ≤ s1 ≤ 2.5s2. Here, when the secondary screen is hidden, the display area of ​​the main screen is guaranteed; and when the secondary screen is unfolded, the layout of the main and secondary screens is optimized, improving the user's screen experience.

[0013] According to another specific embodiment and preferred aspect of the present invention, the lifting assembly further includes a back plate fixedly connected to the inner wall of the housing, guide rails and elastic elements respectively disposed on the back plate, wherein the lifting module is slidably connected to the back plate; the elastic element is connected to the lifting module and has a tendency to drive the lifting module to move upward. Here, the main screen lifting is stable, and at the same time, it requires less effort for the user to operate.

[0014] Preferably, the guide rail has limiting grooves at its bottom and top, and the lifting module has limiting protrusions that match the limiting grooves. When the main screen is in its highest or lowest position, the limiting protrusions insert into and limit it within the corresponding limiting grooves. This ensures the stability of the main and secondary screens in their unfolded and folded states, preventing external forces from causing the main screen to rise or fall unexpectedly.

[0015] Specifically, the guide rail includes two guide rail bodies arranged side-by-side with spacing, each guide rail body having upper and lower limiting grooves on its inner side; the lifting module includes a module body slidably connected to the guide rail bodies, two sliding blocks arranged side-by-side on the module body and capable of sliding in the left-right direction, and a first spring connected between the two sliding blocks, wherein each sliding block has a limiting protrusion, and the first spring has a tendency to drive the two sliding blocks away from each other. Here, the user can achieve the lifting and lowering of the main screen by overcoming a certain elastic force, which is convenient to operate, has minimal wear between structures, and a long service life; at the same time, the structure is simple and reliable, and easy to install and implement.

[0016] Preferably, the elastic element is a constant-force spring, with one end of the constant-force spring connected to the back plate and the other end connected to the lifting module.

[0017] According to another specific embodiment and preferred aspect of the present invention, the lifting assembly further includes an auxiliary rod connected to the bottom of the lifting module. When the main screen moves to the highest position, the auxiliary rod abuts against the linkage module and drives the secondary screen to move outward synchronously.

[0018] Preferably, the linkage component further includes two connecting rods spaced apart vertically, each connecting rod rotatably connected from both ends between the back plate and the linkage module. When the secondary screen is hidden inside the main screen, the linkage module is pressed against the back plate. When the main screen and the secondary screen are spliced ​​vertically, in the left-right orthographic projection, the linkage module, the two connecting rods, and the back plate form a parallelogram. This results in a compact structure, further increasing the thinness of the display module.

[0019] Furthermore, the back panel has barbed portions, and the linkage assembly also includes a second spring connecting the linkage module and each barbed portion, wherein each second spring has a tendency to drive the linkage module closer to the back panel. Here, when the main screen descends, under the elastic reset of the second spring, the linkage module automatically approaches the back panel, thereby causing the secondary screen to automatically retract and hide inside the main screen.

[0020] According to another specific embodiment and preferred aspect of the present invention, a spiral groove extending about a horizontal center line is formed on the rotating shaft, and the locking assembly further includes a guide module sleeved on the rotating shaft and forming a guide channel extending to the left and right. The locking rod is inserted into the guide channel, and a protrusion inserted into the spiral groove is formed on the locking rod. As the housing rotates up and down, the protrusion moves along the spiral groove, and the locking rod moves in the left and right direction; and / or, 70°≤θ≤90°.

[0021] And / or, the locking assembly also includes a stop that elastically abuts against the inner wall of the housing, and the lifting assembly also includes a locking module extending downward from the bottom of the lifting module. When the main screen and the secondary screen are spliced ​​vertically, the locking module disengages upward from the stop, the stop pops out and locks the end of the locking rod, and the housing is locked relative to the pivot. When the secondary screen is hidden inside the main screen, the locking module drives the stop downward to reset, the locking groove aligns with the locking rod, and the housing can rotate relative to the pivot. Here, if the main screen is not fully lowered, the travel of the locking rod is limited by the stop, so when the housing rotates to angle θ, the housing cannot continue to flip downward. This achieves a foolproof design, preventing users from forgetting to retract the secondary screen when closing the display module.

[0022] Another technical solution of the present invention is an electronic device that uses the above-mentioned display module.

[0023] Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0024] Existing laptops, when the secondary screen is unfolded, are inconvenient to use in narrow spaces, and the secondary screen cannot form a complete large screen with the main screen. Furthermore, during the opening or closing of the main screen, the secondary screen is easily opened accidentally due to operational errors, causing bumps or damage. In addition, it increases the thickness of the laptop, affecting the user experience. This application, however, cleverly solves the shortcomings and defects of existing technologies by comprehensively designing the structure of the display module. With this display module, when the casing is flipped between 0° and θ, the locking lever is partially or completely inserted into the locking slot, thereby locking the lifting module and the main screen, keeping the secondary screen fixed and hidden inside the main screen, achieving single-screen use. When the casing flips to an angle greater than θ, the locking lever retracts and disengages from the locking slot, unlocking the lifting module and the main screen, allowing manual access. The main screen is driven to rise and fall, and the linkage module simultaneously drives the secondary screen to move inward and outward, splicing it vertically with the main screen to achieve a large-screen usage state with both screens spliced ​​vertically. Alternatively, the linkage module simultaneously drives the secondary screen to move inward and hide it inside the main screen. Therefore, compared with the prior art, this invention, on the one hand, uses the rising and falling movement of the main screen to drive the secondary screen to unfold or retract, facilitating use in narrow spaces. After unfolding, the secondary screen can be spliced ​​vertically with the main screen to form a complete large screen, meeting users' needs for large-screen use. On the other hand, it ensures that the movement of the secondary screen can only be driven by the rising and falling movement of the main screen at a certain angle, thereby effectively avoiding accidental opening of the secondary screen and causing bumps or damage. In addition, it can reduce the movement space of the secondary screen, effectively reducing the thickness of electronic devices, achieving a thinner and lighter design, and improving the user experience. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 This is a three-dimensional structural diagram of the display module of the present invention;

[0027] Figure 2 for Figure 1 A structural decomposition diagram;

[0028] Figure 3 for Figure 2 Enlarged schematic diagram of a local part of the structure;

[0029] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0030] Figure 5 for Figure 3 A top-down enlarged view of a local structure;

[0031] Among them: 1. Rotating shaft; 10. Spiral groove;

[0032] 2. Housing;

[0033] 3. Main screen;

[0034] 4. Secondary screen;

[0035] 5. Lifting assembly; 50. Back plate; 500. Hook part; 51. Guide rail; 510. Guide rail body; c0. Limiting groove; 52. Elastic element; 53. Lifting module; 530. Module body; 531. Sliding block; t0. Limiting protrusion; 532. First spring; 54. Locking module; c1. Locking groove; 55. Auxiliary rod;

[0036] 6. Linkage component; 60. Linkage module; 61. Connecting rod; 62. Second spring;

[0037] 7. Locking component; 70. Locking rod; 700. Protrusion; 71. Guide module; 72. Stop. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0043] like Figures 1 to 5 As shown, the electronic device in this embodiment is a laptop computer, which includes a base and a display module that is flipped up and down on the base. The display module includes a hinge 1, a casing 2 that flips up and down around the center line of the hinge 1 from the bottom, a main screen 3 and a secondary screen 4 respectively disposed on the casing 2, a lifting component 5, a linkage component 6 and a locking component 7.

[0044] Specifically, the rotating shaft 1 is a rotating shaft of any conventional structure, and there are two rotating shafts 1, which are spaced apart at the bottom of the housing 2 along the left and right direction.

[0045] The main screen 3 slides vertically and is positioned on the front side of the casing 2, forming an accommodating space between the main screen 3 and the inner wall of the casing 2. The secondary screen 4, the lifting assembly 5, and the linkage assembly 6 are all installed within this accommodating space. When folded, the main screen 3 moves downward, and the secondary screen 4 is hidden inside the main screen 3. When unfolded, the main screen 3 moves upward, and the secondary screen 4 connects with the bottom edge of the main screen 3 from its top edge to form a complete large screen. In some specific embodiments, the area of ​​the main screen 3 is s1, and the area of ​​the secondary screen 4 is s2, where 1.5s2 ≤ s1 ≤ 2.5s2, preferably, s1 = 2s2.

[0046] The lifting component 5, the linkage component 6, and the locking component 7 constitute an adjustment group. There are two adjustment groups, which are set side by side with intervals. The following description of one adjustment group will clarify that the other one can also be implemented.

[0047] In this example, the lifting assembly 5 includes a back plate 50 fixedly connected to the inner wall of the housing 2, a guide rail 51 and an elastic element 52 respectively disposed on the back plate 50, a lifting module 53 fixedly connected to the main screen 3 and capable of lifting and lowering, and a locking module 54 fixedly connected to the lifting module 53, wherein the lifting module 53 is slidably connected to the back plate 50; the elastic element 52 is connected to the lifting module 53 and has a tendency to drive the lifting module 53 to move upward.

[0048] Specifically, the bottom and top of the guide rail 51 are respectively provided with limiting grooves c0, and the lifting module 53 has a limiting protrusion t0 that matches the limiting groove c0. When the main screen 3 is in the highest or lowest position, the limiting protrusion t0 is inserted into and limited in the corresponding limiting groove c0.

[0049] For ease of implementation, the guide rail 51 includes two guide rail bodies 510 arranged side by side with a gap between them, wherein each guide rail body 510 has two limiting grooves c0 formed on its inner side; the lifting module 53 includes a module body 530 slidably connected to the guide rail body 510, two sliding blocks 531 arranged side by side on the module body 530 and capable of sliding in the left and right direction, and a first spring 532 connected between the two sliding blocks 531, wherein each sliding block 531 has a limiting protrusion t0 formed on it, and the first spring 532 has a tendency to drive the two sliding blocks 531 away from each other.

[0050] The elastic element 52 is a constant-force spring, with one end connected to the back plate 50 and the other end connected to the lifting module 53. In some specific embodiments, there are two constant-force springs, arranged side by side with intervals.

[0051] In this example, the linkage component 6 includes a linkage module 60 that moves synchronously with the lifting module 53 and two connecting rods 61 spaced apart vertically. Each connecting rod 61 is rotatably connected between the back plate 50 and the linkage module 60 from both ends. When the sub-screen 4 is hidden inside the main screen 3, the linkage module 60 is close to the back plate 50. When the main screen 3 and the sub-screen 4 are spliced ​​vertically, in the orthographic projection in the left and right direction, the linkage module 60, the two connecting rods 61, and the back plate 50 form a parallelogram.

[0052] In some specific embodiments, the lifting assembly 5 also includes an auxiliary rod 55 connected to the bottom of the lifting module 53. When the main screen 3 moves to the highest position, the lower end of the auxiliary rod 55 abuts against the linkage module 60 upwards and drives the secondary screen 4 to move outwards synchronously.

[0053] Meanwhile, a barb portion 500 is formed on the back plate 50, and the linkage assembly 6 also includes a second spring 62 connected between the linkage module 60 and each barb portion 500, wherein each second spring 62 has a tendency to drive the linkage module 60 closer to the back plate 50.

[0054] In this example, the locking assembly 7 includes a locking rod 70 that is movably connected to the rotating shaft 1. The locking module 54 has a locking groove c1 that matches the locking rod 70. As the housing 2 rotates up and down around the center line of the rotating shaft 1, the locking rod 70 extends or retracts synchronously to insert into or disengage from the locking groove c1.

[0055] Defined as critical angle θ = 80°, in this embodiment, when the housing 2 flips between 0° and 80°, the locking rod 70 extends and partially or completely inserts into the locking groove c1, the lifting module 53 and the main screen 3 form a lock, and the secondary screen 4 is fixed and hidden inside the main screen 3; when the flip angle of the housing 2 is greater than 80°, the locking rod 70 retracts and disengages from the locking groove c1, and with the lifting movement of the main screen 3 and the lifting module 53, the linkage module 60 synchronously drives the secondary screen 4 to move inward and outward and splice it vertically with the main screen 3, or the linkage module 60 synchronously drives the secondary screen 4 to move inward and hide it inside the main screen 3.

[0056] To further facilitate implementation, a spiral groove 10 extending around the horizontal center line is formed on the rotating shaft 1. The locking assembly 7 also includes a guide module 71 sleeved on the rotating shaft 1 and forming a guide channel extending to the left and right. The locking rod 70 is inserted into the guide channel, and a protrusion 700 inserted into the spiral groove 1 is formed on the locking rod 70. As the housing 2 flips up and down, the protrusion 700 moves along the spiral groove 10, and the locking rod 70 moves in the left and right direction.

[0057] In addition, the locking component 7 also includes a stop 72 that elastically abuts against the inner wall of the housing 2. When the main screen 3 and the secondary screen 4 are spliced ​​together, the locking module 54 disengages upward from the stop 72, the stop 72 pops out and blocks the end of the locking rod 70. When the housing 2 is flipped to the critical angle, the housing 2 is locked relative to the rotating shaft 1. When the secondary screen 4 is hidden inside the main screen 3, the locking module 54 drives the stop 72 downward to reset, the locking groove c 1 is aligned with the locking rod 70, and the housing 2 can rotate freely relative to the rotating shaft 1.

[0058] In summary, with this display module, when the casing rotates between 0° and θ, the locking rod is partially or completely inserted into the locking slot, thus locking the lifting module and the main screen. This keeps the secondary screen fixed and hidden inside the main screen, enabling single-screen operation. When the casing rotates at an angle greater than θ, the locking rod retracts and disengages from the locking slot, unlocking the lifting module and the main screen. By manually driving the main screen to move up and down, the linkage module synchronously drives the secondary screen to move inward and outward, splicing it vertically with the main screen, achieving a large-screen dual-screen setup. Alternatively, the linkage module synchronously drives the secondary screen to move inward and outward, splicing it vertically with the main screen, thus achieving a large-screen dual-screen setup. The secondary screen moves inward and is hidden inside the main screen. Therefore, compared with the prior art, this invention, on the one hand, uses the lifting and lowering movement of the main screen to unfold or retract the secondary screen, facilitating use in narrow spaces. Furthermore, when unfolded, the secondary screen can be seamlessly integrated with the main screen to form a complete large screen, meeting users' needs for large-screen use. On the other hand, it ensures that the secondary screen can only move at a certain angle via the lifting and lowering movement of the main screen, effectively preventing accidental opening of the secondary screen and resulting in bumps or damage. In addition, it reduces the movement space of the secondary screen, effectively reducing the thickness of the electronic device and achieving a lighter design. The design features several advantages: First, a thinner profile improves the user experience. Second, the main screen's display area is maintained even when the secondary screen is hidden. The layout of the main and secondary screens is optimized when the secondary screen is unfolded, enhancing the user's screen experience. Third, the main screen's lifting and lowering is stable thanks to the combination of guide rails and constant-force springs, making operation easier for the user. Fourth, the stability of the main and secondary screens in both unfolded and folded states is ensured through the combination of limiting grooves and limiting protrusions, preventing accidental lifting or lowering of the main screen due to external forces. Fifth, the main screen can be raised and lowered by the user overcoming a certain amount of elastic force, making operation convenient, reducing wear between structures, and extending service life. The structure is also simple, reliable, and easy to install and implement. Sixth, when the main screen lowers, the linkage module automatically approaches the back panel under the elastic reset of the second spring, causing the secondary screen to automatically retract and hide inside the main screen. Eighth, if the main screen is not fully lowered, the travel of the locking lever is limited by the stop block. Therefore, when the housing rotates to angle θ, the housing cannot continue to flip downwards, preventing the user from forgetting to retract the secondary screen when closing the display module, thus achieving a foolproof design.

[0059] The present invention has been described in detail above, with the aim of enabling those skilled in the art to understand and implement the invention. However, this description should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be included within the scope of protection of the invention.

Claims

1. A display module in which a main screen drives a secondary screen to move at a certain angle, comprising a pivot, a housing that flips up and down around the center line of the pivot from the bottom, and a main screen and a secondary screen respectively disposed on the housing, characterized in that: The display module further includes a locking component, a lifting component, and a linkage component. The locking component includes a locking rod movably connected to the pivot, which extends or retracts synchronously as the housing rotates up and down around the pivot's centerline. The lifting component includes a lifting module fixedly connected to the main screen and capable of lifting, and a locking module fixedly connected to the lifting module, wherein the locking module has a locking groove matching the locking rod. The linkage component includes a linkage module that moves synchronously with the lifting module. A critical angle θ is defined. When the housing rotates between 0° and θ, the locking rod extends and partially or completely inserts into the locking groove, locking the lifting module and the main screen, thus fixing the sub-screen and hiding it inside the main screen. When the housing rotation angle is greater than θ, the locking rod retracts and disengages from the locking groove. Simultaneously, as the main screen and the lifting module move up and down, the linkage module drives the sub-screen to move inwards and outwards and connect vertically with the main screen, or simultaneously drives the sub-screen to move inwards and hide inside the main screen.

2. The display module according to claim 1, in which the main screen drives the secondary screen to move at a certain angle, is characterized in that: The area of ​​the main screen is s1, and the area of ​​the secondary screen is s2, where 1.5s2≤s1≤2.5s2.

3. The display module according to claim 1, in which the main screen drives the secondary screen to move at a certain angle, is characterized in that: The lifting assembly further includes a back plate fixedly connected to the inner wall of the housing, guide rails and elastic elements respectively disposed on the back plate, wherein the lifting module is slidably connected to the back plate; the elastic element is connected to the lifting module and has a tendency to drive the lifting module to move upward.

4. The display module that drives the secondary screen to move at a certain angle according to claim 3, characterized in that: The bottom and top of the guide rail are respectively provided with limiting grooves, and the lifting module has limiting protrusions that match the limiting grooves. When the main screen is in the highest or lowest position, the limiting protrusions are inserted into and limited in the corresponding limiting grooves.

5. The display module according to claim 4, in which the main screen drives the secondary screen to move at a certain angle, characterized in that: The guide rail includes two guide rail bodies arranged side by side with a gap, wherein each guide rail body has two limiting grooves formed on its inner side; the lifting module includes a module body slidably connected to the guide rail body, two sliding blocks arranged side by side on the module body and capable of sliding in the left and right direction, and a first spring connected between the two sliding blocks, wherein each sliding block has a limiting protrusion formed on it, and the first spring has a tendency to drive the two sliding blocks away from each other.

6. The display module according to claim 3, in which the main screen drives the secondary screen to move at a certain angle, is characterized in that: The elastic element is a constant-force spring, with one end of the constant-force spring connected to the back plate and the other end connected to the lifting module.

7. The display module according to claim 3, in which the main screen drives the secondary screen to move at a certain angle, is characterized in that: The lifting assembly also includes an auxiliary rod connected to the bottom of the lifting module. When the main screen moves to its highest position, the auxiliary rod abuts against the linkage module and drives the secondary screen to move outward synchronously.

8. The display module according to claim 7, in which the main screen drives the secondary screen to move at a certain angle, characterized in that: The linkage component further includes two connecting rods spaced apart vertically, each connecting rod being rotatably connected from both ends between the back plate and the linkage module. When the sub-screen is hidden inside the main screen, the linkage module is attached to the back plate. When the main screen and the sub-screen are spliced ​​vertically, in the orthographic projection in the left-right direction, the linkage module, the two connecting rods, and the back plate form a parallelogram; and / or, a barb portion is formed on the back plate. The linkage component further includes a second spring connecting the linkage module and each barb portion, wherein each second spring has a tendency to drive the linkage module closer to the back plate.

9. The display module according to claim 1, in which the main screen drives the secondary screen to move at a certain angle, characterized in that: The rotating shaft has a spiral groove extending around the horizontal center line. The locking assembly also includes a guide module sleeved on the rotating shaft and having a guide channel extending left and right. The locking rod is inserted into the guide channel, and the locking rod has a protrusion inserted into the spiral groove. As the housing flips up and down, the protrusion moves along the spiral groove, and the locking rod moves in the left and right direction; and / or, 70°≤θ≤90°; and / or, the locking assembly also includes a stop block that elastically abuts against the inner wall of the housing. When the main screen and the sub-screen are spliced ​​up and down, the locking module disengages upward from the stop block, the stop block pops out and blocks the end of the locking rod, and the housing is locked relative to the rotating shaft; when the sub-screen is hidden inside the main screen, the locking module drives the stop block downward to reset, the locking groove aligns with the locking rod, and the housing can rotate relative to the rotating shaft.

10. An electronic device, characterized in that: It uses the display module described in any one of claims 1-9.

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