Double-sided expansion screen of portable laptop

The dual-sided extended screen for portable laptops, designed with a support frame and rotating shaft, solves the problem of easy damage to the dual-screen structure of portable laptops, provides multi-angle display and intelligent data transmission and heat dissipation, and improves the stability and lifespan of the device.

WO2026102792A1PCT designated stage Publication Date: 2026-05-21SHENZHEN RONGTUO TECHNOLOGY INNOVATION CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SHENZHEN RONGTUO TECHNOLOGY INNOVATION CO LTD
Filing Date
2024-11-20
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing dual-screen structures for portable laptops are prone to damage during prolonged use, and insufficient or excessive magnetic attraction of the magnetic structure can affect the lifespan of the laptop, failing to meet the requirements for portability and stability.

Method used

The design incorporates a support frame, connecting components, mounting bracket, and extended screen, combined with 360-degree rotating shafts and limiting components, enabling detachable installation and multi-angle adjustment of the extended screen. Furthermore, it optimizes data transmission and heat dissipation through an intelligent thermal management system.

Benefits of technology

It achieves portability and stability of the extended screen, avoids pressure damage to the laptop screen hinge, is suitable for different laptop sizes, provides multi-angle display, and improves device stability and lifespan by intelligently adjusting data transmission and heat dissipation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to the field of expansion screens. Disclosed is a double-sided expansion screen of a portable laptop. The double-sided expansion screen comprises a support frame, connecting assemblies, a mounting frame and expansion screens, wherein the rear end face of the support frame is provided with an interface assembly connected to a laptop computer; limiting assemblies are disposed at positions close to two sides of the rear end of the support frame; two connecting assemblies are provided, and are detachably mounted at positions on two sides of the support frame and close to the rear end; and the mounting frame is mounted on the connecting assemblies. The technical essentials of the present invention are: existing suspension-type structures are changed to support and dual-rotation structures, such that the double-sided expansion screen of the laptop can be folded together when not in use, and thus the volume of the double-sided expansion screen of the laptop is only slightly larger than the area of a single expansion screen, making the double-sided expansion screen extremely convenient to carry; in addition, when the double-sided expansion screen is in use, no pressure is exerted on a screen hinge of the laptop computer, such that the operation of the laptop computer is not affected, thereby achieving good using effects and promising application prospects.
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Description

Dual-sided extended screen for portable laptops Technical Field

[0001] This invention relates to the field of extended screens, and particularly to a dual-sided extended screen for portable laptops. Background Technology

[0002] Portable laptops refer to personal laptops with high mobility. Generally speaking, laptops 12 inches or smaller and weighing no more than 2 kg can be considered portable laptops. The primary consideration for portable laptops is portability.

[0003] A dual-screen monitor is a type of desktop monitor that typically involves fixing the screens to a stand with screws, allowing for the use of two screens interchangeably.

[0004] The existing patent, CN220894806U, entitled "An Invention Patent for a Portable Laptop Extended Dual-Screen Display Device," describes a device comprising a mounting frame, a first connector, a second connector, a display module, and two wing plates. The two wing plates are rotatably connected to the back ends of the mounting frame. The first connector is disposed on the wing plates, and the second connector is disposed on the back of the display module. The first and second connectors are magnetically connected. The two side LCD screen assemblies are magnetically connected to the main structure for communication and fixation. The two side LCD screen assemblies can be placed vertically or horizontally to meet the environmental requirements of both horizontal and vertical display on a laptop. The mounting frame can be pulled left and right to adjust its horizontal size, allowing the dual-screen device to be hung on laptop screens of different sizes. Technical issues

[0005] The structure described in the aforementioned patent is a common dual-screen display structure on the market. However, in actual use, due to the weight of the dual-screen structure and the frame itself, the screen components of the portable laptop are subjected to significant pressure during prolonged use, making them prone to damage. Furthermore, when the portable laptop is tilted, gravity causes the dual-screen structure to become vertical. Adding a magnetic structure at this point is problematic; ordinary magnetic structures lack sufficient magnetic attraction, while strong magnetic structures interfere with the use of the portable laptop, easily causing damage and shortening its lifespan, thus failing to meet user requirements.

[0006] In summary, existing tablet computer support structures have certain shortcomings. Therefore, we propose a dual-sided extended screen for portable laptops. Technical solutions

[0007] The main objective of this invention is to provide a dual-sided extended screen for portable laptops, which can effectively solve the problems in the background art.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A portable laptop dual-sided extended screen, including a support frame, connecting components, mounting bracket, and extended screen;

[0010] The rear end of the support frame is provided with an interface component for connecting to a laptop computer, and limit components are provided near the two sides of the rear end of the support frame.

[0011] There are two sets of connecting components, which are detachably installed on both sides of the support frame near the rear end.

[0012] The mounting bracket is installed on the connection assembly;

[0013] The extended screen is embedded in the mounting bracket;

[0014] The connecting assembly includes a connecting block, a supporting rotating shaft, and a 360-degree rotating shaft component.

[0015] One end of the supporting rotating shaft is rotatably connected to the connecting block, and the other end of the supporting rotating shaft is inserted into the inside of the support frame and limited by the limiting component;

[0016] The 360-degree rotating shaft is rotatably mounted on the connecting block, and the upper end of the 360-degree rotating shaft extends into the interior of the mounting bracket and is fixedly connected to the mounting bracket.

[0017] The lower end face of the support frame is equipped with support feet near both sides for adjusting the tilt angle of the support frame.

[0018] This invention describes a portable double-sided extended screen for laptops. It changes the existing suspended structure and adopts a support and dual-rotation structure, which allows the double-sided extended screen to be folded together when not in use. The volume of the double-sided extended screen is only slightly larger than that of a single extended screen, making it very convenient to carry. Moreover, it does not put pressure on the laptop's screen hinge during use and does not affect the operation of the laptop. It has good performance and good application prospects.

[0019] Preferably, the outer surface of the supporting rotating shaft is provided with a plurality of slots at equal intervals, and the limiting component engages with any one of the slots.

[0020] Preferably, the limiting component includes a movable part, a locking block, and a fixing part:

[0021] The movable part is located inside the support frame, and a locking block that inserts into the locking slot is installed on the movable part;

[0022] The fixing element is located inside the support frame and is used to limit the position of the moving parts.

[0023] Preferably, the movable part is equipped with a press-type latch, and the fixed part is equipped with a latch for locking the position of the press-type latch.

[0024] Preferably, the movable component is equipped with a button and a reset component:

[0025] One end of the button passes through a hole in the support frame and extends to the outside of the support frame;

[0026] One end of the reset component is mounted on the movable part, and the other end of the reset component is mounted inside the support frame.

[0027] Preferably, the reset component is a reset spring, and there are two sets of reset springs. The two ends of the reset springs are fixedly connected to the inner wall of the movable part and the support frame, respectively.

[0028] Preferably, a connecting shaft is installed on the connecting block, the lower end of the 360-degree rotating shaft is rotatably connected to the connecting shaft, the 360-degree rotating shaft is inserted into the lower end face of the mounting bracket near the end position, and the 360-degree rotating shaft is connected to the mounting bracket by bolts.

[0029] The data transmission control method for connecting the dual-sided extended screen of the portable laptop includes: by combining dynamic data transmission adjustment and intelligent thermal management system, the high load and high heat generation during data transmission can be intelligently adjusted according to the actual use environment and device status, so as to achieve a balance between transmission efficiency and heat dissipation.

[0030] This invention describes a dual-sided extended screen for portable laptops, which includes a connecting component. The supporting rotating axis cooperates with the limiting component to change the distance between the two extended screens, making the extended screen suitable for laptops of different widths. It has high overall applicability. The connecting block can rotate relative to the supporting rotating axis, and the mounting bracket can rotate around the 360-degree rotating axis, thus allowing the extended screen to be presented at a wide angle to meet the needs of different users. It has good performance and promising application prospects. Beneficial effects

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. This invention describes a portable laptop dual-sided extended screen, which changes the existing hanging structure and adopts a support and dual rotation structure, so that the laptop dual-sided extended screen can be folded together when not in use. The volume of the laptop dual-sided extended screen is only slightly larger than the area of ​​a single extended screen, making it very convenient to carry. Moreover, it does not put pressure on the laptop screen hinge during use and does not affect the operation of the laptop. It has good performance and good application prospects.

[0033] 2. This invention describes a portable laptop double-sided extended screen, which includes a connecting component. The supporting rotating axis cooperates with the limiting component to change the distance between the two extended screens, making the extended screen suitable for laptops of different widths. It has high overall applicability. The connecting block can rotate relative to the supporting rotating axis, and the mounting bracket can rotate around the 360-degree rotating axis, thus allowing the extended screen to be presented at a wide angle, meeting the needs of different users. It has good performance and promising application prospects. Attached Figure Description

[0034] Figure 1 is an overall structural diagram of the dual-sided extended screen of the portable notebook of the present invention;

[0035] Figure 2 is a structural diagram of the partially unfolded state of the dual-sided extended screen of the portable notebook of the present invention.

[0036] Figure 3 is a partial structural diagram of the portable notebook dual-sided extended screen of the present invention in use.

[0037] Figure 4 is a structural diagram of the portable notebook dual-sided extended screen of the present invention from other angles in use.

[0038] Figure 5 is a partial exploded view of the dual-sided extended screen of the portable notebook computer of the present invention;

[0039] Figure 6 is a structural diagram of the limiting component in the dual-sided extended screen of the portable notebook of the present invention;

[0040] Figure 7 is a structural diagram of the fixing component in the dual-sided extended screen of the portable notebook of the present invention;

[0041] Figure 8 is a structural diagram of the connecting components in the dual-sided extended screen of the portable notebook of the present invention;

[0042] Figure 9 is a partial structural diagram of the connecting components in the dual-sided extended screen of the portable notebook of the present invention.

[0043] In the diagram: 1. Support frame; 2. Mounting bracket; 3. Extended screen; 4. Connecting block; 41. Connecting shaft; 5. Support rotation shaft; 51. Slot; 6. 360-degree rotating shaft; 7. Limiting component; 71. Moving part; 72. Locking block; 73. Fixing part; 74. Press-type locking block; 75. Locking piece; 76. Return spring; 8. Support foot. Detailed Implementation

[0044] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example

[0045] As shown in Figures 1-5, the portable laptop double-sided extended screen includes a support frame 1, a connecting component, a mounting bracket 2, and an extended screen 3.

[0046] The rear end face of the support frame 1 is provided with an interface component for connecting to a laptop computer, and the rear end of the support frame 1 is provided with limit components 7 near both sides; there are two sets of connecting components, and the connecting components are detachably installed on both sides of the support frame 1 near the rear end.

[0047] Mounting bracket 2 is mounted on the connecting assembly; extended screen 3 is embedded in mounting bracket 2;

[0048] The connecting assembly includes a connecting block 4, a supporting rotating shaft 5, and a 360-degree rotating shaft 6: one end of the supporting rotating shaft 5 is rotatably connected to the connecting block 4, and the other end of the supporting rotating shaft 5 is inserted into the inside of the support frame 1 and limited by the limiting assembly 7; the 360-degree rotating shaft 6 is rotatably mounted on the connecting block 4, and the upper end of the 360-degree rotating shaft 6 extends into the inside of the mounting frame 2 and is fixedly connected to the mounting frame 2.

[0049] The 360-degree rotating shaft 6 enables the mounting bracket 2 to rotate 360 ​​degrees perpendicular to the desktop. During use, it can be adjusted to other directions for easy viewing by people in the surrounding area, resulting in a good user experience.

[0050] The interface components include a Type-C interface and a USB interface for connecting to the two sets of extended screens 3. By connecting to a computer, the two sets of extended screens 3 can be displayed, and the two extended screens 3 can be lit, connected and controlled simultaneously.

[0051] The rear end of the mounting bracket 2 is also equipped with several sets of function keys, which can realize "one-click switching to screen mirroring", "one-click mute", "one-click screenshot" and "one-click screen off" of the extended screen 3, helping users to use the extended screen 3 more conveniently and protect their privacy. The overall functionality is quite strong.

[0052] In use, the connecting block 4 is rotated around the supporting rotating shaft 5, and then the mounting bracket 2 is rotated around the 360-degree rotating shaft 6 to change the tilt angle of the mounting bracket 2, thereby adjusting the angle of the extended screen 3 so that relevant personnel can easily view it.

[0053] When stored, its structure is similar to that of a laptop, with the extended screen 3 located on the inside, which protects the screen so it is not easily damaged and has a relatively long service life.

[0054] This invention describes a portable laptop dual-sided extended screen, which changes the existing hanging structure and adopts a support and dual rotation structure, so that the laptop dual-sided extended screen can be folded together when not in use. The volume of the laptop dual-sided extended screen is only slightly larger than the area of ​​a single extended screen 3, making it very convenient to carry. Moreover, it does not put pressure on the laptop screen hinge during use and does not affect the operation of the laptop. It has good performance and good application prospects. Example

[0055] As shown in Figures 1-9, based on Example 1, this example also includes the following structure:

[0056] The outer surface of the supporting rotating shaft 5 is provided with several sets of slots 51 at equal intervals, and the limiting component 7 engages with any one of the slots 51.

[0057] When in use, the distance between the two sets of extended screens 3 is different when the limiting component 7 is engaged with the slot 51 at different positions, so that it can be used with laptops of different sizes.

[0058] The limiting component 7 includes a movable part 71, a locking block 72, and a fixing part 73.

[0059] The movable part 71 is located inside the support frame 1, and a locking block 72 that is inserted into the locking slot 51 is installed on the movable part 71; the fixing part 73 is located inside the support frame 1 and is used to limit the position of the movable part 71.

[0060] When the distance between the extended screens 3 is not adjusted, the card block 72 is always inserted inside the card slot 51, limiting the position of the support rotation axis 5 and preventing the support rotation axis 5 from rotating.

[0061] The movable part 71 is equipped with a press-type latch 74, and the fixed part 73 is equipped with a latch 75 for locking the position of the press-type latch 74.

[0062] The push-button block 74 and the locking element 75 are existing and commonly used locking structures, so their specific shapes will not be described in detail.

[0063] When adjusting the distance between the extended screens 3, the press-type latch 74 and the latch 75 are locked in place. At this time, the support rotation shaft 5 can be pulled directly to change the position of the support rotation shaft 5, thereby fixing the position of the extended screen 3.

[0064] The movable part 71 is equipped with a button and a reset component:

[0065] One end of the button passes through a hole on the support frame 1 and extends to the outside of the support frame 1; one end of the reset component is mounted on the movable part 71, and the other end of the reset component is mounted inside the support frame 1.

[0066] When adjusting the distance between the extended screens 3, press the button. The button drives the movable part 71 to move, thereby causing the press-type latch 74 on the movable part 71 to engage with the latch 72. When the position of the support rotation shaft 5 is adjusted, press the button again. The press-type latch 74 and the latch 72 separate, the reset spring 76 restores its deformation, and pushes the movable part 71 to move, so that the latch 72 is inserted into the slot 51, thereby achieving the limit of the support rotation shaft 5.

[0067] The reset component uses a reset spring 76. There are two sets of reset springs 76, and the two ends of the reset spring 76 are fixedly connected to the inner wall of the movable part 71 and the support frame 1, respectively.

[0068] The reset component can also be implemented using other elastic structures, such as a spring, or an elastic rope at the other end of the movable part 71.

[0069] A connecting shaft 41 is installed on the connecting block 4. The lower end of the 360-degree rotating shaft 6 is rotatably connected to the connecting shaft 41. The 360-degree rotating shaft 6 is inserted into the lower end face of the mounting bracket 2 near the end position. The 360-degree rotating shaft 6 and the mounting bracket 2 are connected by bolts.

[0070] Both the 360-degree rotating shaft 6 and the supporting rotating shaft 5 limit the rotation angle through damping.

[0071] Support feet 8 are installed on the lower end face of the support frame 1 near both sides to adjust the tilt angle of the support frame 1, which can adjust the tilt angle of the support frame 1 to make it easier for people to use the laptop.

[0072] In Figure 1, the entire structure is flipped over to show the structure of the support leg 8, with the actual support leg 8 located at the bottom.

[0073] This invention describes a portable laptop dual-sided extended screen, which includes a connecting component. The supporting rotation axis 5 cooperates with the limiting component 7 to change the distance between the two extended screens 3, making the extended screen 3 suitable for laptops of different widths. It has high overall applicability. The connecting block 4 can rotate relative to the supporting rotation axis 5, and the mounting bracket 2 can rotate around the 360-degree rotating axis 6, thereby allowing the extended screen 3 to be presented at a wide angle, meeting the needs of different users, with good performance and promising application prospects. Example

[0074] In existing technologies, portable extended display connections typically rely on standard transmission protocols such as USB, HDMI, and Thunderbolt. However, with the increasing demand for high-resolution displays, transmission bandwidth has become a bottleneck limiting data transmission efficiency, especially in high-performance displays and high frame rate scenarios. Furthermore, the heat generated during high-speed transmission often leads to excessively high device temperatures, affecting system stability and lifespan. Existing solutions primarily address these issues by increasing transmission bandwidth or adding heat dissipation components, but these two approaches are often mutually exclusive, leaving a trade-off between transmission efficiency and heat dissipation.

[0075] To address the aforementioned issues, this invention provides a novel data transmission control method for portable extended screen connections. This method intelligently regulates the data transmission rate and heat dissipation mechanism, thereby effectively reducing heat accumulation while ensuring efficient transmission and ensuring stable device operation.

[0076] The core idea of ​​this invention is to combine dynamic data transmission regulation and intelligent thermal management system so that the high load and high heat generation during data transmission can be intelligently adjusted according to the actual use environment and equipment status, so as to achieve a balance between transmission efficiency and heat dissipation.

[0077] A novel data transmission control method for portable extended screen connections includes:

[0078] Step 1: Estimating Data Transfer Rate and Heat Dissipation Requirements

[0079] 1. After the portable extended screen is connected to the main device, the system first detects the current transmission rate and display requirements (such as resolution, refresh rate, color depth, etc.) through the data transmission protocol.

[0080] 2. Based on the current transmission load and display requirements, the system estimates the heat that may be generated during the current data transmission process and establishes a dynamic heat load model.

[0081] Step 2: Dynamically adjust the data transmission rate

[0082] 1. When the transmission load is confirmed to be too high (such as the need for high resolution and high frame rate display), the system automatically reduces the data transmission rate or resolution based on real-time temperature data and thermal load model to reduce the heat generated.

[0083] 2. When the temperature is low or the system load is light, the system can appropriately increase the data transmission rate or optimize the display parameters to improve transmission efficiency and display quality.

[0084] Step 3: Intelligent Thermal Management Control

[0085] 1. Based on real-time temperature sensor data, the system determines the temperature of key components of the equipment (such as processor, display panel, transmission interface, etc.).

[0086] 2. When the equipment temperature reaches a preset threshold, the system automatically activates a heat dissipation mechanism (such as a fan, heat pipe, or liquid cooling system) and dynamically adjusts the heat dissipation effect according to temperature changes. For example, the system can automatically adjust the fan speed or activate additional cooling components based on temperature changes.

[0087] 3. When the equipment is in a low temperature state or the transmission load is light, the system can automatically shut down or reduce the working intensity of the heat dissipation system to avoid unnecessary noise and power consumption waste.

[0088] Step 4: Coordination and Optimization of Transmission Protocol and Heat Dissipation

[0089] 1. The system dynamically optimizes the way data packets are sent based on the bandwidth limit and thermal load of the transmission protocol (such as USB4, Thunderbolt, etc.). For example, under high load, the system may reduce bandwidth usage and heat accumulation by optimizing data compression or delaying the transmission of some non-critical data.

[0090] 2. During high-bandwidth transmission, the system will prioritize the use of additional hardware acceleration functions (such as GPU or dedicated acceleration chips) to ensure the stability and efficiency of data transmission and reduce CPU load, thereby reducing heat generation.

[0091] Step 5: Long-term temperature control strategy

[0092] 1. The system learns the temperature control performance of the device under different working modes during long-term use, and gradually optimizes the adjustment strategy of data transmission rate and heat dissipation mechanism, so that the device can intelligently adjust according to the actual use scenario.

[0093] 2. The system also supports user-defined temperature control strategies to adapt to different usage environments (such as office environments, outdoor high-temperature environments, etc.).

[0094] This invention combines dynamic data transmission rate with heat dissipation strategy. Unlike existing technologies that treat data transmission rate and heat dissipation system as independent modules, this invention proposes an innovative method for dynamic coordination between the two. It can intelligently adjust in real time according to equipment load and environmental conditions, improving transmission efficiency and heat dissipation effect. This invention employs an intelligent heat load prediction and transmission adjustment mechanism. By establishing a dynamic heat load model and combining real-time monitoring of data transmission and equipment temperature, it accurately predicts heat generation under high loads, thus providing data support for optimizing data transmission rate and heat dissipation strategy. This invention provides a temperature control optimization mechanism based on long-term learning through user-defined temperature control and intelligent adjustment. Users can adjust the transmission rate and heat dissipation strategy according to specific needs, providing greater flexibility and adaptability. It has the following beneficial effects:

[0095] 1. High-efficiency data transmission: By dynamically adjusting the transmission rate and optimizing data flow control, this invention ensures that data transmission remains efficient and stable even under high load conditions.

[0096] 2. Reduce equipment temperature: The system monitors and intelligently adjusts the heat dissipation method in real time to avoid overheating, extend equipment life, and ensure that the temperature is always maintained within a reasonable range during use.

[0097] 3. Enhanced User Experience: The adaptive adjustment mechanism of this invention reduces the need for user intervention in different environments, automatically optimizes the working state, and improves the user experience of the portable extended screen.

[0098] In summary, this invention provides a novel data transmission control method for portable extended screen connections. By combining intelligent adjustment of data transmission rate with heat dissipation strategy, it effectively solves the problems of efficient transmission and heat dissipation, improves the performance and stability of the device, and reduces the risk of overheating, providing a brand-new solution for portable extended screen technology.

[0099] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A portable notebook bi-fold expansion screen, characterized by, include; The support frame (1) has an interface component for connecting to a laptop computer on its rear end face, and a limit component (7) is provided near the two sides of its rear end. The connecting components are in two sets and are detachably installed on both sides of the support frame (1) near the rear end. Mounting bracket (2), which is mounted on the connecting assembly; An extended screen (3) is embedded in a mounting bracket (2); The connection component includes: Connecting block (4); The support rotation shaft (5) is rotatably connected to the connecting block (4) at one end and inserted into the inside of the support frame (1) at the other end, and is limited by the limiting component (7); A 360-degree rotating shaft (6) is rotatably mounted on a connecting block (4), with its upper end extending into the interior of the mounting bracket (2) and fixedly connected to the mounting bracket (2); The lower end face of the support frame (1) is equipped with support feet (8) near both sides for adjusting the tilt angle of the support frame (1).

2. The portable notebook double-sided expansion screen of claim 1, wherein: The outer surface of the supporting rotating shaft (5) is provided with several sets of slots (51) at equal intervals, and the limiting component (7) engages with any one of the slots (51).

3. The portable notebook double-sided expansion screen of claim 2, wherein: The limiting component (7) includes: The movable part (71) is located inside the support frame (1) and is equipped with a card block (72) that is inserted into the card slot (51). A fastener (73) is disposed inside the support frame (1) and is used to limit the position of the movable part (71); A connecting shaft (41) is installed on the connecting block (4). The lower end of the 360-degree rotating shaft (6) is rotatably connected to the connecting shaft (41). The 360-degree rotating shaft (6) is inserted into the lower end face of the mounting bracket (2) near the end position. The 360-degree rotating shaft (6) and the mounting bracket (2) are connected by bolts.

4. The portable notebook double-sided expansion screen of claim 3, wherein: The movable part (71) is equipped with a press-type latch (74), and the fixed part (73) is equipped with a latch (75) for locking the position of the press-type latch (74).

5. The portable notebook double-sided expansion screen of claim 4, wherein: The movable part (71) is equipped with: The button has one end passing through a hole in the support frame (1) and extending to the outside of the support frame (1); The reset component has one end mounted on the movable part (71) and the other end mounted inside the support frame (1).

6. The portable notebook dual-sided extended screen according to claim 5, characterized in that: The reset component uses a reset spring (76), and there are two sets of reset springs (76). The two ends of the reset springs (76) are fixedly connected to the inner wall of the movable part (71) and the support frame (1), respectively.

7. The data transmission control method for connecting a portable notebook computer with a dual-sided extended screen according to any one of claims 1 to 6, characterized in that: By combining dynamic data transmission regulation and intelligent thermal management system, the high load and high heat generation during data transmission can be intelligently adjusted according to the actual use environment and equipment status, so as to achieve a balance between transmission efficiency and heat dissipation.