Split-screen display device for notebook computer

Abstract

The utility model relates to a split-screen display device for a notebook computer. A middle plate of the split-screen display device is used for connecting a first screen and a second screen, and the first screen and the second screen are arranged on the left side and the right side of the middle plate respectively. One side of the middle plate is hinged to the first screen through a first double-shaft hinge assembly, and the other side of the middle plate is hinged to the second screen through a second double-shaft hinge assembly. When the split-screen display device is in a completely folded state, the first screen is stacked on the front face of the middle plate, the display face of the first screen faces the front face of the middle plate, the second screen is stacked on the back face of the first screen, and the display face of the second screen faces the back face of the first screen. The middle plate and the display screens on the two sides are connected through the double-shaft hinge, the rotating movement freedom degree of split screens is improved, the display faces of the first screen and the second screen are covered and protected when the display screens are completely folded, the situation that the display faces are exposed is avoided, and the risk that the display faces are damaged during storage or carrying and transportation is reduced.

Description

Technical Field

[0001] The present application relates to an extended display of a notebook computer, and more specifically to a split-screen display device for a notebook computer. Background Art

[0002] Laptops have become one of the indispensable tools in modern life. With the advancement of technology, laptops have gradually become thinner, more portable, and their performance has been significantly improved. With the increase in office needs, laptop users' demand for multitasking and efficient work is also increasing. In order to meet this demand, split-screen displays for laptops have appeared on the market. The split-screen display of a laptop is usually mounted on the laptop screen and after connecting to the laptop, the system screen is expanded. Users can use multiple screens at the same time to display multiple task windows separately, which is convenient for users to multitask and improve work efficiency.

[0003] Some laptop split-screen displays come with two left and right screens, with a bracket between the two screens, and the two screens are rotatably connected to the brackets on both sides. When folding such a split-screen display, the two screens usually rotate one in front of the other. After being fully folded, the two screens are located in front of and behind the bracket, respectively. Since the display surfaces of both screens face forward when unfolded, one of the screens will face outward after being folded by rotating one in front of the other. There is a risk of the exposed display surface being crushed or scratched when stored or carried for transportation, which needs to be improved.

[0004] Application Contents

[0005] The purpose of the present application is to overcome the above-mentioned deficiencies of the prior art and to provide a split-screen display device for a notebook computer to reduce the risk of screen damage.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a split-screen display device for a laptop computer, comprising an intermediate plate, a first screen and a second screen, the intermediate plate being used to connect the first screen and the second screen, the first screen and the second screen being respectively arranged on the left and right sides of the intermediate plate; one side of the intermediate plate is hinged to the first screen through a first biaxial hinge assembly, and the other side of the intermediate plate is hinged to the second screen through a second biaxial hinge assembly; when the split-screen display device is in a fully folded state, the first screen is stacked on the front side of the intermediate plate and the display surface of the first screen faces the front side of the intermediate plate, and the second screen is stacked on the back side of the first screen and the display surface of the second screen faces the back side of the first screen.

[0007] The present application adopts a dual-axis hinge to connect the middle panel and the display screens on both sides, thereby improving the rotational freedom of the split screen. When fully folded, the display surface of the first screen will be covered and blocked by the middle panel, and the display surface of the second screen will be covered and blocked by the first screen. That is, the display surfaces of the first screen and the second screen are both covered and protected, and the display surfaces will not be exposed. The risk of damage to the display surface during storage or transportation is reduced, thereby improving the protection of the display screen.

[0008] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a stereoscopic image of the split-screen display device in the fully expanded state.

[0010] Figure 2 This is a three-dimensional image of the split-screen display device when the first screen is folded.

[0011] Figure 3 This is a three-dimensional image of the split-screen display device when it is fully folded.

[0012] Figure 4 , 5 All of them are schematic diagrams of the split-screen display device in use with a laptop computer.

[0013] Figure 6 This is an exploded view of the split-screen display device.

[0014] Figure 7 This is the internal structure diagram of the first screen and the middle bracket (rear perspective).

[0015] Figure 8 This is the internal structure diagram of the first screen and the middle bracket (front perspective).

[0016] Fig. 9 This is the internal structure diagram of the second screen and the middle bracket (rear view).

[0017] Fig.10 This is the internal structure diagram of the second screen and the middle bracket (front perspective).

[0018] It should be noted that the products shown in the above views have been appropriately reduced / enlarged to suit the size of the drawings and for clarity of the views, and there is no restriction on the size of the products shown in the views. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The embodiment of the present application is a split-screen display device for a notebook computer, and its specific structure is as follows: Figure 1-10 shown.

[0023] In the embodiment, Figure 1 As shown, the split-screen display device includes an intermediate plate 30, a first screen 10 and a second screen 20. The intermediate plate 30 is used to connect the first screen 10 and the second screen 20, and the first screen 10 and the second screen 20 are respectively arranged on the left and right sides of the intermediate plate 30. In the embodiment, the normal direction of the front side 301 of the intermediate plate 30 is taken as the front side. Figure 1 The split-screen display device is in a fully unfolded state, the angle between the first screen 10 and the second screen 20 is 180 degrees, and the display surface 101 of the first screen 10 and the display surface 201 of the second screen 20 are both facing forward. Figure 1 As shown, one side of the middle panel 30 is hinged to the first screen 10 through the first biaxial hinge assembly 40, and the other side of the middle panel 30 is hinged to the second screen 20 through the second biaxial hinge assembly 50. When in use, the first screen 10 can be horizontally rotated relative to the first biaxial hinge assembly 40 (rotated forward along direction A, rotated backward along direction B), or the first screen 10 and the first biaxial hinge assembly 40 can be horizontally rotated relative to the middle panel 30 at the same time (rotated forward along direction A, rotated backward along direction B). Similarly, when in use, the second screen 20 can be horizontally rotated relative to the second biaxial hinge assembly 50 (rotated forward along direction C, rotated backward along direction D), or the second screen 20 and the second biaxial hinge assembly 50 can be horizontally rotated relative to the middle panel 30 at the same time (rotated forward along direction C, rotated backward along direction D). It can be seen that the split-screen display device uses a dual-axis hinge to connect the middle panel 30 and the first screen 10 and the second screen 20 on both sides, so the rotational freedom of the first screen 10 and the second screen 20 is improved.

[0024] When folding is required Figure 1 When the split-screen display device is used, the first screen 10 is first rotated along the direction A until the first screen 10 is overlapped on the front surface 301 of the middle plate 30. At this time, the display surface 101 of the first screen 10 faces the front surface 301 of the middle plate 30, and the following is obtained: Figure 2 Status shown. Figure 2 The split-screen display device in the state is further folded, and the second screen 20 is rotated along the direction C until the second screen 20 is overlapped on the back side 102 of the first screen 10. At this time, the display surface 201 of the second screen 20 faces the back side 102 of the first screen 10, and the following is obtained: Figure 3 Status shown. Figure 3 The split-screen display device is in a completely folded state, the display surface of the first screen 10 will be covered and blocked by the middle plate 30, and the display surface of the second screen 20 will be covered and blocked by the first screen 10, that is, the display surfaces of the first screen 10 and the second screen 20 are both covered and protected, and the display surfaces will not be exposed. The risk of damage to the display surfaces during storage or transportation is reduced, thereby improving protection of the screen.

[0025] like Figure 1 As shown, two upper and lower buffer strips 103 are fixed to the right side of the first screen 10. When the first screen 10 is stacked on the front surface 301 of the middle plate 30, the buffer strip 103 can prevent the first screen 10 from directly contacting the front surface 301 of the middle plate 30, thereby avoiding scratching the surfaces of the first screen 10 and the middle plate 30, and also helping to reduce the impact on the internal electronic components. Figure 2 As shown, two buffer bars 203 are also fixed to the left side of the second screen 20. The buffer bars 203 can prevent the second screen 20 from directly contacting the first screen 10, avoid scratching the surfaces of the second screen 20 and the first screen 10, and also help to reduce the impact on the internal electronic components.

[0026] Figure 4 and Figure 5 Schematic diagram of the split screen display device of the embodiment when used with a laptop computer 90. The middle plate 30 is placed behind the screen 91 of the laptop computer 90, and the first screen 10 and the second screen 20 are just on both sides of the laptop computer screen. After the split screen display device is connected to the corresponding interface of the laptop computer 90 through a wire harness, the user can process tasks in multiple windows on three screens at the same time.

[0027] The middle plate 30 in the embodiment is not clamped or fixed behind the screen 91 of the laptop computer 90, so the middle plate 30 does not need to be designed with a related structure for clamping the screen 91 of the laptop computer 90, which is conducive to reducing the thickness of the middle plate 30, thereby also reducing the thickness and volume of the entire split-screen display device after it is fully folded. Since the middle plate 30 is not fixed to the screen 91 of the laptop computer 90, the middle plate 30, the first screen 10, and the second screen 20 all need to be placed on a plane 92 (such as a desktop), so the bottom edges of the middle plate 30, the first screen 10, and the second screen 20 are respectively fixed with buffer strips 81 (see Figure 3 ), which is used to avoid scratches and reduce impact. Since the middle plate 30 does not need to be fixed to the screen 91 of the laptop computer 90, the split-screen display device is not limited to being placed on the back of the laptop computer 90 when actually used. After the split-screen display device is connected to the laptop computer 90 through a wire harness, the split-screen display device of the embodiment can be placed at any position and in any direction according to specific usage requirements within the range allowed by the wire harness length.

[0028] The middle plate 30 of the split-screen display device cannot be extended horizontally. To adapt to laptops of different sizes, the horizontal dimension of the middle plate 30 can be set to be no less than the horizontal dimension of the screen of a mainstream laptop. For example, the common screen size of a mainstream laptop is 13-17 inches, and the horizontal dimension of the middle plate 30 should be no less than the horizontal dimension of a 17-inch laptop screen. Alternatively, manufacturers produce split-screen display devices of different sizes according to laptops of different sizes for consumers to choose to purchase. For example, a 13-inch split-screen display device corresponds to a 13-inch laptop, and the horizontal dimension of the middle plate 30 is no less than the horizontal dimension of a 13-inch laptop screen.

[0029] like Figure 5 As shown, since the middle plate 30 does not need to be fixed to the screen 91 of the laptop computer 90, the retractable support legs 33 behind the middle plate 30 need to be flipped backwards and extended downwards to the plane 92 when in use, and the support legs 33 provide support force for the split-screen display device so that the split-screen display device can be placed stably. The specific structure of the retractable support legs 33 is prior art and will not be described in detail here.

[0030] In some embodiments, Figure 6As shown, a first recess 31 is provided on one side of the middle panel 30, and a second recess 11 is provided on the side where the first screen 10 is connected to the middle panel 30. A portion of the first biaxial hinge assembly 40 is located in the first recess 31 and is hinged to the first recess 31, and a portion of the first biaxial hinge assembly 40 is located in the second recess 11 and is hinged to the second recess 11. The first biaxial hinge assembly 40 is placed in the first recess 31 and the second recess 11 on both sides, thereby reducing the distance between the first screen 10 and the middle panel 30 when fully unfolded, which is beneficial to reducing the overall lateral size and avoiding the hinge structure from being exposed. Figure 6 As shown, the other side of the middle panel 30 is provided with a third recess 32, and the side where the second screen 20 is connected to the middle panel 30 is correspondingly provided with a fourth recess 21, a part of the second biaxial hinge assembly 50 is located in the third recess 32 and is hinged to the third recess 32, and a part of the second biaxial hinge assembly 50 is located in the fourth recess 21 and is hinged to the fourth recess 21. The two sides of the second biaxial hinge assembly 50 are respectively placed in the third recess 32 and the fourth recess 21, thereby reducing the distance between the second screen 20 and the middle panel 30 when fully unfolded, which is conducive to reducing the overall lateral size and avoiding the hinge structure from being exposed.

[0031] In some embodiments, Figure 6 As shown, the first biaxial hinge assembly 40 has two parallel rotating shafts 43 and the distance between the two rotating shafts 43 is the first width L1, and the second biaxial hinge assembly 50 has two parallel rotating shafts 53 and the distance between the two rotating shafts 53 is the second width L2. The first width L1 is smaller than the second width L2 and the difference between the two is not less than the thickness of the first screen 10. A better embodiment is that the first width L1 is smaller than the second width L2 and the difference between the two is equal to the thickness of the first screen 10. Therefore, when the split-screen display device is in a fully folded state, the end of the second screen 20 away from the second biaxial hinge assembly 50 will not be lifted, and the folding effect of the second screen 20 is smoother, and the user experience is better.

[0032] In some embodiments, in combination Figure 7 and Figure 8 As shown, the first biaxial hinge assembly 40 includes a cylindrical housing 41 and a biaxial hinge 42. The biaxial hinge 42 can be a biaxial hinge used in common notebook computers, and these biaxial hinges 42 can be purchased from outside. The biaxial hinge 42 is partially placed in the housing 41 and fixedly connected to the housing 41. Specifically, as shown in FIG. Figure 7 and Figure 8As shown, the biaxial hinge 42 has an intermediate cylinder 44, one end of which is provided with an internal threaded hole 441, and a fixing plate 411 is provided inside the outer shell 41, and a through hole 412 is provided in the middle of the fixing plate 411, and the internal threaded hole 441 of the intermediate cylinder 44 is opposite to the through hole 412, and a screw passes through the through hole 412 and is screwed into the internal threaded hole 441 to fix the intermediate cylinder 44 and the fixing plate 411, that is, the biaxial hinge 42 is fixedly connected to the outer shell 41. The upper part of the biaxial hinge 42 passes through the outer shell 41, and the connecting plates 431 at the outer ends of the two rotating shafts 43 of the biaxial hinge 42 are respectively fixedly connected to the first screen 10 and the intermediate plate 30 by multiple screws.

[0033] In some embodiments, in combination Figure 7 and Figure 8 As shown, the first dual-axis hinge assembly 40 also includes a port piece 45. The port piece 45 penetrates into the housing 41 and is fixedly connected to the housing 41 by screws 452. The port piece 45 is arranged at the other end opposite to the dual-axis hinge 42. The port piece 45 has two rotating cylinders 451 parallel to each other, and the rotating cylinders 451 respectively penetrate into the first screen 10 and the middle plate 30 to form a rotational connection. The rotating cylinders 451 correspond to the rotating shafts 43 of the dual-axis hinge 42 one by one, and the rotating cylinders 451 and the corresponding rotating shafts 43 are coaxial. The rotating cylinders 451 and the rotating shafts 43 of the dual-axis hinge 42 jointly play a role in improving the rotational stability of the first screen 10. In addition, the wiring harness 34 connecting the first screen 10 and the middle plate 30 passes through the two rotating cylinders 451 in sequence, so the wiring harness 34 does not need to be exposed, and the relative rotation of the first screen 10 will not affect the wiring harness 34. The wiring harness 34 connects the main control circuit board 35 and the display panel 12 inside the first screen 10 to transmit power and data. Figure 7 As shown, a guide groove 303 is provided on the inner surface of the front shell 302 of the middle plate 30, and the guide groove 303 is used to guide the direction of the wire harness 34 and fix the wire harness 34. Figure 8 As shown, a guide groove 105 for guiding the wire harness 34 is also provided on the inner surface of the rear shell 104 of the first screen 10 .

[0034] In some embodiments, Figure 8 As shown, a long first pressing plate 14 is fixed inside the side where the first screen 10 is connected to the first biaxial hinge assembly 40. The first pressing plate 14 extends along the length direction of the rotating shaft 43 of the biaxial hinge 42. The first pressing plate 14 is provided with an arc groove 141 at a position corresponding to the rotating cylinder 451, and the inner wall of the arc groove 141 is in contact with the outer wall of the rotating cylinder 451. In addition, as shown in FIG. Figure 8As shown, a through hole 142 is provided on one side in the horizontal direction and one side in the vertical direction of the circular arc groove 141, and a screw passing through the through hole 142 is screwed into the rear shell 104 of the first screen 10 to fix the first pressing plate 14 and the rear shell 104 of the first screen 10. The circular arc groove 141 can fix the rotating drum 451 so that the rotating drum 451 can only rotate around its own axis to prevent the rotating drum 451 from shaking relative to the first screen 10. In addition, when the first pressing plate 14 is fixed to the inner surface of the rear shell 104 of the first screen 10, the guide groove 105 is covered by the first pressing plate 14, and the wire harness 34 in the guide groove 105 is restricted therein, so that the wire harness 34 will not easily leave the guide groove 105.

[0035] In some embodiments, in combination Fig. 9 and Fig.10 As shown, the second biaxial hinge assembly 50 includes a cylindrical housing 51 and a biaxial hinge 52. The biaxial hinge 52 can be a biaxial hinge used in common notebook computers, and these biaxial hinges 52 can be purchased from outside. The biaxial hinge 52 is partially placed in the housing 51 and fixedly connected to the housing 51. Specifically, as shown in FIG. Fig. 9 and Fig.10 As shown, the biaxial hinge 52 has an intermediate cylinder 54, one end of which is provided with an internal threaded hole 541, and a fixing plate 511 is provided in the housing 51, and a through hole 512 is provided in the middle of the fixing plate 511, and the internal threaded hole 541 of the intermediate cylinder 54 is opposite to the through hole 512, and a screw passes through the through hole 512 and is screwed into the internal threaded hole 541 to fix the intermediate cylinder 54 and the fixing plate 511, that is, the biaxial hinge 52 is fixedly connected to the housing 51. The upper part of the biaxial hinge 52 passes through the housing 51, and the connecting plates 531 at the outer ends of the two rotating shafts 53 of the biaxial hinge 52 are respectively fixedly connected to the second screen 20 and the intermediate plate 30 by a plurality of screws.

[0036] In some embodiments, in combination Fig. 9 and Fig.10As shown, the second biaxial hinge assembly 50 also includes a port piece 55. The port piece 55 penetrates into the housing 51 and is fixedly connected to the housing 51 by screws 552. The port piece 55 is arranged at the other end opposite to the biaxial hinge 52. The port piece 55 has two rotating cylinders 551 parallel to each other, and the rotating cylinders 551 respectively penetrate into the second screen 20 and the middle plate 30 to form a rotation connection. The rotating cylinders 551 correspond to the rotating shafts 53 of the biaxial hinge 52 one by one, and the rotating cylinders 551 and the corresponding rotating shafts 53 are coaxial. The rotating cylinders 551 and the rotating shafts 53 of the biaxial hinge 52 together play a role in improving the rotation stability of the second screen 20. In addition, the wiring harness 38 connecting the second screen 20 and the middle plate 30 passes through the two rotating cylinders 551 in sequence, so the wiring harness 38 does not need to be exposed, and the relative rotation of the second screen 20 will not affect the wiring harness 38. The wiring harness 38 connects the main control circuit board 35 of the middle plate 30 and the display panel 22 inside the second screen 20 to transmit power and data. Fig. 9 As shown, a guide groove 304 is provided on the inner surface of the front shell 302 of the middle plate 30, and the guide groove 304 is used to guide the direction of the wire harness 38 and fix the wire harness 38. Fig.10 As shown, a guide groove 205 for guiding the wire harness 38 is also provided on the inner surface of the rear shell 204 of the second screen 20. Fig. 9 As shown, a brightness control circuit board 351 with built-in brightness adjustment buttons 352 is provided on the upper part of the middle plate 30, and the brightness control circuit board 351 is electrically connected to the main control circuit board 35 through a flexible circuit board 353. The two groups of brightness adjustment buttons 352 in the brightness control circuit board 351 are used to adjust the display brightness of the first screen 10 and the second screen 20.

[0037] In some embodiments, Fig.10 As shown, a second strip-shaped pressing plate 24 is fixed inside the side where the second screen 20 is connected to the second biaxial hinge assembly 50. The second pressing plate 24 extends along the length direction of the rotating shaft 53 of the biaxial hinge 52. The second pressing plate 24 is provided with an arc groove 241 at a position corresponding to the rotating cylinder 551, and the inner wall of the arc groove 241 is in contact with the outer wall of the rotating cylinder 551. In addition, as shown in FIG. Fig.10 As shown, a through hole 242 is provided on one side in the horizontal direction and one side in the vertical direction of the circular arc groove 241, and a screw passing through the through hole 242 is screwed into the rear shell 204 of the second screen 20 to fix the second pressing plate 24 and the rear shell 204 of the second screen 20. The circular arc groove 241 can fix the rotating drum 551, so that the rotating drum 551 can only rotate around its own axis, and prevent the rotating drum 551 from shaking relative to the second screen 20. In addition, when the second pressing plate 24 is fixed to the inner surface of the rear shell 204 of the second screen 20, the guide groove 205 is covered by the second pressing plate 24, and the wire harness 38 in the guide groove 205 is restricted therein, so that the wire harness 38 will not easily leave the guide groove 205.

[0038] In some embodiments, Figure 8 The first screen 10 shown has two first magnets 13 disposed therein. Fig.10 The second screen 20 shown has two second magnets 23 disposed therein. Fig. 9 The intermediate plate 30 is provided with a third magnet 37 corresponding to the first magnet 13 . Figure 7 The middle plate 30 shown is provided with a fourth magnet 36 corresponding to the second magnet 23. When the split-screen display device is folded, when the first screen 10 is stacked on the front of the middle plate 30, a magnetic attraction is formed between the first magnet 13 and the third magnet 37 to fix the first screen 10, preventing the first screen 10 from easily rotating and detaching. When the first screen 10 is stacked on the front of the middle plate 30 and then the second screen 20 is stacked on the back of the first screen 10, a magnetic attraction is formed between the second magnet 23 and the fourth magnet 36 to fix the second screen 20, preventing the second screen 20 from easily rotating and detaching. Therefore, when the split-screen display device is in a fully folded state, the first screen 10 and the second screen 20 can be fixed by magnetic attraction, and when the split-screen display device shakes, the display surfaces of the two screens will not be easily exposed. In other embodiments, the first magnet, the second magnet, the third magnet, and the fourth magnet are not limited to the numbers shown in the figure. For example, there may be 1 first magnet, 1 second magnet, 1 third magnet, and 1 fourth magnet, or there may be 3 first magnets, 3 second magnets, 3 third magnets, and 3 fourth magnets.

[0039] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0041] The above examples are only used to further illustrate the technical content of this application so that readers can understand it more easily, but they do not mean that the implementation methods of this application are limited to these. Any technical extension or re-creation made based on this application is protected by this application. The scope of protection of this application shall be subject to the claims.

Claims

1. A split-screen display device for a notebook computer, characterized in that: It includes an intermediate plate, a first screen and a second screen, the intermediate plate is used to connect the first screen and the second screen, the first screen and the second screen are respectively arranged on the left and right sides of the intermediate plate; one side of the intermediate plate is hinged to the first screen through a first biaxial hinge assembly, and the other side of the intermediate plate is hinged to the second screen through a second biaxial hinge assembly; when the split-screen display device is in a fully folded state, the first screen is stacked on the front side of the intermediate plate and the display surface of the first screen faces the front side of the intermediate plate, and the second screen is stacked on the back side of the first screen and the display surface of the second screen faces the back side of the first screen.

2. The split-screen display device for a notebook computer according to claim 1, wherein: A first concave is provided on one side of the middle plate, a second concave is correspondingly provided on the side where the first screen is connected to the middle plate, a part of the first biaxial hinge assembly is located in the first concave and is hinged to the first concave, and a part of the first biaxial hinge assembly is located in the second concave and is hinged to the second concave; A third recess is provided on the other side of the middle panel, a fourth recess is correspondingly provided on the side where the second screen is connected to the middle panel, a portion of the second biaxial hinge assembly is located in the third recess and is hinged to the third recess, and a portion of the second biaxial hinge assembly is located in the fourth recess and is hinged to the fourth recess.

3. The split-screen display device for a notebook computer according to claim 1 or 2, wherein: The first biaxial hinge assembly has two parallel rotating axes and the distance between the two rotating axes is a first width. The second biaxial hinge assembly has two parallel rotating axes and the distance between the two rotating axes is a second width. The first width is smaller than the second width and the difference between the two is not less than the thickness of the first screen.

4. The split-screen display device for a notebook computer according to claim 1, wherein: The first biaxial hinge assembly includes a cylindrical shell and a biaxial hinge, wherein the biaxial hinge is fixedly connected to the shell, and the connecting plates at the outer ends of the two rotating shafts of the biaxial hinge are respectively fixedly connected to the first screen and the middle plate.

5. The split-screen display device for a notebook computer as claimed in claim 4, characterized in that: The first biaxial hinge assembly also includes a port piece, which is fixedly connected to the housing and is arranged at the other end opposite to the biaxial hinge; the port piece has two parallel rotating cylinders, which are respectively inserted into the first screen and the middle plate to form a rotational connection, and the rotating cylinders correspond one-to-one to the rotating axes of the biaxial hinge and are coaxial with the corresponding rotating axes; the wiring harness connecting the first screen and the middle plate passes through the two rotating cylinders in sequence.

6. The split-screen display device for a notebook computer according to claim 5, wherein: A long first pressure plate is fixed inside the side where the first screen is connected to the first biaxial hinge assembly. The first pressure plate extends along the length direction of the rotating shaft of the biaxial hinge. The first pressure plate is provided with an arc groove at a position corresponding to the rotating cylinder. The inner wall of the arc groove is in contact with the outer wall of the rotating cylinder. Through holes are provided on one side in the horizontal direction and one side in the vertical direction of the arc groove. Screws passing through the through holes are screwed into the first screen to fix the first pressure plate and the first screen.

7. The split-screen display device for a notebook computer according to claim 4, wherein: The biaxial hinge has an intermediate tube, one end of which is provided with an internal threaded hole, a fixing plate is provided in the outer shell, a through hole is provided in the fixing plate, the internal threaded hole of the intermediate tube is opposite to the through hole, and a screw passing through the through hole is screwed into the internal threaded hole to form a fixed connection.

8. The split-screen display device for a notebook computer according to claim 1, wherein: The second biaxial hinge assembly includes a cylindrical shell and a biaxial hinge, wherein the biaxial hinge is fixedly connected to the shell, and the connecting plates at the outer ends of the two rotating shafts of the biaxial hinge are respectively fixedly connected to the second screen and the middle plate.

9. The split-screen display device for a notebook computer according to claim 8, wherein: The second biaxial hinge assembly further comprises a port piece, the port piece is fixedly connected to the housing and is arranged at the other end opposite to the biaxial hinge; the port piece has two rotating cylinders parallel to each other, the rotating cylinders respectively penetrate into the second screen and the middle plate to form a rotation connection, and the rotating cylinders correspond to the rotating shaft of the biaxial hinge one by one and are coaxial; The wiring harness connecting the second screen and the middle plate passes through the two rotating drums in sequence.

10. The split-screen display device for a notebook computer according to claim 9, wherein: A second long strip pressure plate is fixed inside the side where the second screen is connected to the second biaxial hinge assembly. The second pressure plate extends along the length direction of the rotating shaft of the biaxial hinge. The second pressure plate is provided with an arc groove at a position corresponding to the rotating cylinder. The inner wall of the arc groove is in contact with the outer wall of the rotating cylinder. Through holes are provided on one side in the horizontal direction and one side in the vertical direction of the arc groove. Screws passing through the through holes are screwed into the second screen to fix the second pressure plate and the second screen.

11. The split-screen display device for a notebook computer according to claim 8, wherein: The biaxial hinge has an intermediate tube, one end of which is provided with an internal threaded hole, a fixing plate is provided in the outer shell, a through hole is provided in the fixing plate, the internal threaded hole of the intermediate tube is opposite to the through hole, and a screw passing through the through hole is screwed into the internal threaded hole to form a fixed connection.

12. The split-screen display device for a notebook computer according to claim 1, wherein: At least one first magnet is provided in the first screen, at least one second magnet is provided in the second screen, and a third magnet corresponding to the first magnet and a fourth magnet corresponding to the second magnet are provided in the intermediate plate; when the first screen is stacked on the front side of the intermediate plate, a magnetic attraction force is formed between the first magnet and the third magnet to fix the first screen; when the first screen is stacked on the front side of the intermediate plate and the second screen is stacked on the back side of the first screen, a magnetic attraction force is formed between the second magnet and the fourth magnet to fix the second screen.

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