Scroll screen device and electronic equipment

Abstract

The invention relates to the technical field of flexible display screens, and provides a scroll screen device and electronic equipment, and the scroll screen device comprises a screen backboard, a sliding assembly and a display screen; the sliding assembly is arranged in the plate surface of one side of the screen back plate and can at least partially extend out of or retract into the screen back plate in a sliding manner; the display screen comprises a display screen area and a standby display screen area which are connected with each other; the display screen area and the screen backboard are correspondingly arranged, and the standby display screen area is contained between the display screen area and the screen backboard; the other side of the standby display screen area is connected with the sliding assembly, and the sliding assembly can synchronously drive the standby display screen area to slide out of the screen backboard and at least partially display the standby display screen area and the display screen area side by side. The electronic equipment comprises the scroll screen device, the actual display area of the scroll screen device and the electronic equipment can be flexibly adjusted, the large display area of the screen is fully met, and compact storage and space saving can be achieved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of flexible display screens, and in particular to a scroll screen device and an electronic device. Background Art

[0002] Flexible display technology is widely used in electronic devices in the prior art, and the most common application scenario of flexible displays is folding screens. Flexible displays are flexible and foldable and can be used as folding screens in electronic devices, such as mobile phones with folding screens, tablets with folding screens, etc.

[0003] For larger electronic devices such as laptops, the screen size is generally fixed. In order to provide users with a better visual viewing experience, the size of the laptop is generally increased as much as possible to increase the display screen area of ​​the laptop.

[0004] However, for some thin and light notebooks and portable notebooks designed for small size, the existing methods of increasing the display screen area include using dual screens or configuring an additional portable auxiliary screen. However, both methods will also affect other usage space of the notebook computer to a certain extent, increasing the actual usage space of the notebook computer.

[0005] In view of this, a display screen with a new structure is urgently needed in the market to solve the problem of insufficient display area of ​​notebook computer screens in the prior art. Summary of the invention

[0006] The embodiments of the present disclosure provide a scroll screen device and an electronic device to solve the problem of insufficient display area of ​​a notebook computer screen in the prior art.

[0007] The scroll screen device provided by the embodiment of the present disclosure includes a screen back panel, a sliding component and a display screen;

[0008] The sliding assembly is disposed on a side panel of the screen back panel and can at least partially slide out or slide back on the screen back panel;

[0009] The display screen includes a display screen area and a standby display screen area that are connected to each other;

[0010] Wherein: the display screen area and the screen back panel are arranged correspondingly, and the standby display screen area is accommodated between the display screen area and the screen back panel;

[0011] The other side of the standby display screen area is connected to the sliding assembly, and the sliding assembly can synchronously drive the standby display screen area to slide out of the screen back plate and at least partially display side by side with the display screen area.

[0012] In one possible implementation, the sliding assembly includes a sliding plate, a mounting joint, and a scissor hinge;

[0013] The sliding plate is slidably arranged on a side surface of the screen back plate;

[0014] The mounting joint is fixedly mounted in the sliding plate;

[0015] One end of the scissor hinge is hinged to the screen back panel, and the other end is hinged to the mounting joint;

[0016] The scissor hinge can adjust its own length by changing the scissor angle, so as to correspondingly drive the mounting joint and the sliding plate to slide along the screen back panel.

[0017] In one possible implementation manner, the scissor hinge further includes a protruding limit clamp;

[0018] The panel surface of the screen back panel is provided with a limit slot perpendicular to the sliding direction of the sliding assembly;

[0019] The limit clamp head is correspondingly inserted into the limit clamp slot and can slide back and forth along the limit clamp slot when the scissor hinge is extended or retracted.

[0020] In one embodiment, a hinge spring is further provided in the scissor hinge;

[0021] One end of the hinge spring is connected to the mounting joint, and the other end is connected to the limit clamp;

[0022] The hinge spring can be expanded and contracted synchronously with the scissor hinge to store or release elastic potential energy accordingly.

[0023] In one possible implementation, the display screen further includes a display tension spring;

[0024] One side of the standby display screen area is elastically connected to the mounting joint via the display tension spring;

[0025] When the mounting joint slides, the display tension spring can correspondingly expand and contract to drive the standby display screen area to move out or contract on the screen back plate.

[0026] In one possible implementation manner, the display screen is configured as a flexible display screen, and the display screen area is integrally connected with the standby display screen area;

[0027] The standby display screen area can be bent at an angle of 360° with the display screen area to accommodate two sides of the display screen area;

[0028] Furthermore, the sliding assembly can drive the standby display screen area to extend side by side on both sides of the display screen area individually or simultaneously.

[0029] In one possible implementation, the sliding assembly further includes a sliding shaft;

[0030] The standby display screen area is wrapped around the outer peripheral surface of the sliding shaft;

[0031] The sliding shaft can slide synchronously with the sliding plate, and drive the standby display screen area to slide and extend or slide and retract around its own outer peripheral surface.

[0032] In one possible implementation manner, the scroll screen device further includes a push-pull member;

[0033] The push-pull member is fixedly arranged on a side of the sliding plate facing away from the scissor-fork hinge, and is used to drive the sliding assembly to slide back and forth under external push and pull force.

[0034] In one possible implementation manner, two sliding components are symmetrically arranged in the screen back panel;

[0035] The scissor hinges in the two sliding assemblies are respectively connected to one of the standby display screen areas;

[0036] The two standby display screen areas can slide in opposite directions driven by the sliding assembly.

[0037] In addition, an embodiment of the present disclosure further provides an electronic device, which includes a device body and the above-mentioned scroll screen device;

[0038] Wherein, the scroll screen device is electrically connected to the device body, and is capable of displaying image information output by the device body through the display screen area and / or the standby display screen area.

[0039] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0040] The scroll screen device provided by the disclosed embodiment cleverly divides the display screen into a display screen area and a spare display screen area that can slide and retract synchronously with the sliding component. When more display area is needed, it is only necessary to drive the spare display screen area to slide out through the sliding component so that the screen back panel and the display screen area can be displayed side by side. When more display area is not needed, the spare display screen area can be driven by the sliding component to slide and be stored between the screen back panel and the display screen area. This has the beneficial effects of being able to flexibly adjust the actual display area, fully satisfying the large display area of ​​the screen, and being able to be compactly stored to save space.

[0041] In addition, the electronic device provided by the embodiment of the present disclosure includes the above-mentioned scroll screen device, which can achieve the same beneficial effects and will not be repeated here.

[0042] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0044] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0045] Figure 1 A cross-sectional view showing a retracted state of the scroll screen device provided by an embodiment of the present disclosure;

[0046] Figure 2 A cross-sectional view showing a stretched state of the scroll screen device provided by an embodiment of the present disclosure;

[0047] Figure 3 A partial stereoscopic diagram showing a stretched state of the scroll screen device provided by an embodiment of the present disclosure;

[0048] Figure 4 A partial stereoscopic diagram showing a storage state of the scroll screen device provided by an embodiment of the present disclosure;

[0049] Figure 5 A schematic diagram of an electronic device provided by an embodiment of the present disclosure is shown.

[0050] Explanation of the numbers in the figure: 1. Screen back panel; 11. Limiting card slot;

[0051] 2. Sliding assembly; 21. Sliding plate; 22. Mounting joint; 23. Scissor hinge; 231. Limiting clamp; 232. Hinge spring; 24. Display tension spring; 25. Sliding shaft;

[0052] 3. Display screen; 31. Display screen area; 32. Standby display screen area;

[0053] 4. Push-pull parts; 5. Equipment body. DETAILED DESCRIPTION

[0054] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0055] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0056] Combination Figure 1 and Figure 2 As shown, an embodiment of the present disclosure provides a scroll screen device, which includes a screen back panel 1, a sliding component 2 and a display screen 3; the sliding component 2 is arranged in a side panel of the screen back panel 1, and can at least partially slide out or slide back on the screen back panel 1; the display screen 3 includes a display screen area 31 and a standby display screen area 32 that are interconnected; the display screen area 31 is arranged corresponding to the screen back panel 1, and the standby display screen area 32 is accommodated between the display screen area 31 and the screen back panel 1; the other side of the standby display screen area 32 is connected to the sliding component 2, and the sliding component can synchronously drive the standby display screen area 32 to slide out of the screen back panel 1, and at least partially display side by side with the display screen area 31.

[0057] The scroll screen device can be specifically used as a display screen and applied to electronic devices such as laptop computers, host computers, tablet computers, and mobile phones. The use process is specifically explained using a laptop computer as an example.

[0058] When the scroll screen device provided by the embodiment of the present disclosure is used in practice, firstly, the display screen area 31 in the display screen 3 corresponding to the screen back panel 1 can be used as the main display screen of the laptop computer, and when the user needs more display area according to his own usage, he only needs to slide the sliding component 2 out of the screen back panel 1 accordingly, and the sliding component 2 can simultaneously drive the standby display screen area 32 in the display screen 3 to slide out of the screen back panel 1 synchronously, so that the standby display screen area 32 can be at least partially displayed side by side with the display screen area 31, thereby effectively realizing the function of expanding and increasing the display area of ​​the laptop computer. Moreover, the way in which the sliding component 2 drives the standby display screen area 32 to slide out of the screen back panel 1 can be specific but limited to extending from any one or more of the left side, right side, and upper side of the screen back panel 1 simultaneously or separately, as long as the function of displaying the standby display screen area 32 and the display screen area 31 side by side can be realized.

[0059] In addition, when the user no longer needs more display area, the user only needs to slide the sliding component 2 correspondingly to the screen back panel 1, so that the sliding component 2 can synchronously drive the spare display screen area 32 in the display screen 3 to slide and be stored between the screen back panel 1, so that the laptop computer can be restored to a state where only the display screen area 31 is used as the actual display screen, so that the laptop computer can maintain a small structure, save space, and be easy to store.

[0060] To sum up, compared with the laptop computer with dual screens or an additional portable auxiliary screen in the prior art, the scroll screen device provided by the embodiment of the present disclosure cleverly arranges the display screen 3 into a display screen area 31 and a spare display screen area 32 that can slide and retract synchronously with the sliding component 2. When more display area is needed, it is only necessary to drive the spare display screen area 32 to slide out through the sliding component 2 so that it can be displayed side by side with the screen back panel 1 and the display screen area 31. When more display area is not needed, the spare display screen area 32 can be driven by the sliding component 2 to slide and be stored between the screen back panel 1 and the display screen area 31. This has the beneficial effects of being able to flexibly adjust the actual display area, fully meet the large display area of ​​the laptop computer, and be able to be compactly stored to save space.

[0061] In one embodiment, the sliding assembly 2 includes a sliding plate 21, a mounting joint 22 and a scissor hinge 23; the sliding plate 21 is slidably arranged on a side surface of the screen back panel 1; the mounting joint 22 is fixedly installed in the sliding plate 21; one end of the scissor hinge 23 is hinged to the screen back panel 1, and the other end is hinged to the mounting joint 22; wherein, the scissor hinge 23 can adjust its own length by changing the scissor angle, so as to drive the mounting joint 22 and the sliding plate 21 to slide along the screen back panel 1.

[0062] Specific, combined Figure 2 , Figure 3 and Figure 4 To further explain in detail, the sliding assembly 2 is specifically configured to include a sliding plate 21, a mounting joint 22 and a scissors hinge 23, and one end of the scissors hinge 23 is hinged to the screen back panel 1, and the other end is connected to the sliding plate 21 through the mounting joint 22. In this way, when the scissors hinge 23 changes the scissors clamping angle, the scissors hinge 23 itself can be correspondingly extended or shortened, thereby achieving the function of driving the mounting joint 22 and the sliding plate 21 to slide out or slide back along the screen back panel 1.

[0063] Of course, the above-mentioned sliding assembly 2 can also be configured as other translational structures that can realize the sliding function, for example, it can be configured as a gear rack type translational mechanism, a screw nut type translational mechanism, etc.

[0064] The specific arrangement of the sliding assembly 2 has the beneficial effects of being simple in structure and being able to flexibly drive the screen back panel 1 to slide and retract.

[0065] In one possible implementation manner, the scissors hinge 23 also includes a protruding limit card head 231; the panel surface of the screen back panel 1 is provided with a limit card slot 11 which is perpendicular to the sliding direction of the sliding assembly 2; the limit card head 231 is correspondingly inserted into the limit card slot 11 for limiting position, and can slide back and forth along the limit card slot 11 accordingly when the scissors hinge 23 is extended or retracted.

[0066] Specific, combined Figure 3 To further explain in detail, a limit clamp 231 protruding toward the screen back panel 1 is provided in the scissors-fork hinge 23, and a limit clamp slot 11 perpendicular to the sliding direction of the sliding assembly 2 is correspondingly opened in the board surface of the screen back panel 1, so that the limit clamp 231 is correspondingly inserted in the limit clamp slot 11, and when the sliding plate 21 is manually pulled and pushed by the user, the sliding plate 21 will correspondingly stretch or squeeze to change the scissors angle of the scissors-fork hinge 23, so that the limit clamp 231 can slide back and forth relatively in the limit clamp slot 11. The limit clamp 231 and the limit clamp slot 11 cooperate with each other to limit the extension and retraction direction of the scissors hinge 23 on the one hand, ensuring that the scissors hinge 23 can slide back and forth along the same fixed straight line direction with the sliding plate 21; on the other hand, the limit clamp 231 and the limit clamp slot 11 can be properly assembled to increase the resistance, so that the scissors hinge 23 can be self-locking at any angle, and then the sliding plate 21 can drive the spare display screen area 32 to slide to any position relative to the screen back panel 1, and it can be automatically fixed, ensuring the stability of the spare display screen area 32 and the display screen area 31 when they are displayed side by side.

[0067] The specific arrangement of the above-mentioned limiting clamp head 231 and the limiting clamp slot 11 has the beneficial effects of simple structure, being able to limit the extension direction of the scissor hinge 23, and self-locking and fixing the sliding plate 21 and the standby display screen area 32 in real time.

[0068] In one embodiment, a hinge spring 232 is further provided in the scissors-type hinge 23; one end of the hinge spring 232 is connected to the mounting joint 22, and the other end is connected to the limit clamp 231; the hinge spring 232 can be synchronously extended and retracted with the scissors-type hinge 23 to store or release elastic potential energy accordingly.

[0069] Specific, combined Figure 3 To further explain in detail, a hinge spring 232 is also provided in the scissors fork hinge 23. The hinge spring 232 can also be specifically arranged in a staggered manner corresponding to the two scissors fork arms of the scissors fork hinge 23. Since one end of the hinge spring 232 is connected to the mounting joint 22, and the other end is connected to the limit clamp 231, when the actual effective connection length of the scissors fork hinge 23 itself changes, the hinge spring 232 can be synchronously extended and retracted with the length change of the scissors fork hinge 23 to store or release elastic potential energy accordingly, so that when the user manually pulls or pushes the sliding plate 21, in addition to making a movement stroke more labor-saving, the pulling and pushing process can also be made smoother, thereby avoiding the problem of the sliding plate 21 moving too fast and accidentally pulling the standby display screen area 32.

[0070] The specific arrangement of the hinge spring 232 has the beneficial effects of simple structure and enabling the movement of the sliding plate 21 to be smoother.

[0071] In one embodiment, the display screen 3 also includes a display tension spring 24; one side of the standby display screen area 32 is elastically connected to the mounting joint 22 through the display tension spring 24; when the mounting joint 22 slides, the display tension spring 24 can correspondingly extend and retract to drive the standby display screen area 32 to move out or retract on the screen back panel 1.

[0072] Specific, combined Figure 4 To further explain in detail, the display screen 3 also includes a display tension spring 24, and one side of the standby display screen area 32 is elastically connected to the mounting joint 22 through the display tension spring 24, so that when the sliding plate 21 drives the mounting joint 22 to slide, the display tension spring 24 can correspondingly extend and retract to drive the standby display screen area 32 to move out or retract on the screen back plate 1, and the display tension spring 24 can further buffer and release the tension of the mounting joint 22 on the standby display screen area 32, thereby avoiding the problem of accidental damage to the standby display screen area 32 caused by the sudden instantaneous movement and sudden application of tension of the mounting joint 22 with the sliding plate 21.

[0073] The specific arrangement of the display tension spring 24 has the beneficial effects of simple structure, being able to buffer the tension of the mounting joint 22 and preventing one side of the standby display screen area 32 from being damaged by accidental sudden pulling.

[0074] In one possible implementation, the display screen 3 is configured as a flexible display screen, and the display screen area 31 is integrally connected to the standby display screen area 32; the standby display screen area 32 can be bent at an angle of 360° with the display screen area 31 to accommodate both sides of the display screen area 31; and the sliding component 2 can drive the standby display screen area 32 to extend side by side on both sides of the display screen area 31 individually or simultaneously.

[0075] Specific, combined Figure 1 and Figure 2 To further explain in detail, the display screen 3 is set as a whole flexible display screen, the display screen area 31 is integrally connected with the standby display screen area 32, and the standby display screen area 32 can be bent at an angle of 360° with the display screen area 31 to accommodate both sides of the display screen area 31. In this way, when the scroll screen device is in a normal state, the display screen 3 can rely solely on the display screen area 31 for normal display, so that the laptop computer occupies less space and is convenient for storage; when the scroll screen device is in a state of expanding the display area, the sliding component 2 can drive the standby display screen area 32 on one side alone, or drive the standby display screen areas 32 on both sides at the same time to slide and extend the display screen area 31, and together with the display screen area 31 serve as the display area of ​​the display screen 3, so that the user can flexibly adjust the actual display width of the display screen 3 according to actual usage needs, so that the display screen 3 can provide a larger display range, thereby improving the user's work efficiency and viewing experience.

[0076] Moreover, the flexible display screen has excellent bending resistance, and there is no need to worry about cracks appearing at the bending connection between the standby display screen area 32 and the display screen area 31 .

[0077] The specific configuration of the display screen area 31 and the standby display screen area 32 has the beneficial effects of simple structure and the ability to flexibly adjust the actual display width range of the display screen 3 .

[0078] In one embodiment, the sliding assembly 2 also includes a sliding shaft 25; the spare display screen area 32 is wrapped around the outer circumference of the sliding shaft 25; the sliding shaft 25 can slide synchronously with the sliding plate 21, and drive the spare display screen area 32 to slide and extend or slide and retract around its own outer circumference.

[0079] Specific, combined Figure 1 and Figure 2 To further explain in detail, a sliding shaft 25 is also provided in the sliding assembly 2. The sliding shaft 25 can be installed and connected to the sliding plate 21 through the shaft end. This not only ensures that the sliding shaft 25 slides synchronously with the sliding plate 21, but also does not affect the positive and negative rotation of the sliding shaft 25 around its own axis.

[0080] Moreover, the spare display screen area 32 is wrapped around the outer circumference of the sliding shaft 25, so that when the sliding component 2 moves, the spare display screen area 32 can be slid and extended or slid and stored relative to the outer circumference of the sliding shaft 25, which effectively reduces the resistance when the spare display screen area 32 is extended or stored. In addition, the circular outer circumference of the sliding shaft 25 can also avoid the problem of excessive bending and damage at the connection between the spare display screen area 32 and the display screen area 31.

[0081] In one embodiment, the scroll screen device further includes a push-pull member 4; the push-pull member 4 is fixedly disposed on the side of the sliding plate 21 facing away from the scissor hinge 23, and is used to drive the sliding assembly 2 to slide back and forth under external push and pull force.

[0082] Specific, combined Figure 1 and Figure 2 To further explain in detail, the scroll screen device also includes a push-pull member 4 fixedly arranged on the side of the sliding plate 21 facing away from the scissor hinge 23, and the push-pull member 4 can be specifically configured as a push-pull wrapping shell plate. This makes it easy to grasp with both hands, and indirectly drives the sliding plate 21 to slide back and forth by directly moving the push-pull member 4. On the other hand, when the scroll screen device is in a normal state, the push-pull member 4 is correspondingly buckled and covered on both sides of the screen back panel 1, so as to wrap and protect the standby display screen area 32 to prevent the standby display screen area 32 from being damaged by foreign objects.

[0083] The specific arrangement of the push-pull member 4 has the beneficial effects of simple structure, being convenient for users to grasp, and being able to protect the standby display screen area 32 from collision.

[0084] In one embodiment, two sliding components 2 are symmetrically arranged in the screen back panel 1; the scissor hinges 23 in the two sliding components 2 are respectively connected to a corresponding spare display screen area 32; the two spare display screen areas 32 can slide in opposite directions driven by the sliding components 2.

[0085] Specific, combined Figure 1 and Figure 2 To further explain in detail, the sliding component 2, the spare display screen area 32 and the push-pull member 4 are all symmetrically arranged in two about the central axis of the screen back panel 1, and the two spare display screen areas 32 can slide in opposite directions driven by the sliding component 2, which fully conforms to the ergonomic design. When the user needs to adjust the actual display width of the display screen 3, the user pulls the push-pull members 4 on both sides of the screen back panel 1 with both hands, and at the same time drives the two spare display screen areas 32 to slide in the opposite direction to extend to both sides of the display screen area 31, and display side by side with the display screen area 31, and at this time the user is still corresponding to the center of the scroll screen device, ensuring a comfortable user experience.

[0086] In addition, an embodiment of the present disclosure also provides an electronic device, which includes a device body 5 and the above-mentioned scroll screen device; wherein the scroll screen device is electrically connected to the device body 5, and can display image information output by the device body 5 through the display screen area 31 and / or the standby display screen area 32.

[0087] Specific, combined Figure 5 To further explain in detail, the electronic device can be but is not limited to a laptop computer, a tablet computer, an all-in-one host computer or other electronic device with a display screen. Since the electronic device includes the above-mentioned scroll screen device, all its beneficial effects can be achieved, which will not be further elaborated here.

[0088] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0089] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A scroll screen device, characterized in that: include: Screen back panel (1); A sliding assembly (2) is arranged on a side panel of the screen back panel (1) and is capable of at least partially sliding out or sliding back on the screen back panel (1); A display screen (3), comprising a display screen area (31) and a standby display screen area (32) connected to each other; in ； The display screen area (31) is arranged corresponding to the screen back panel (1), and the standby display screen area (32) is accommodated between the display screen area (31) and the screen back panel (1); The other side of the standby display screen area (32) is connected to the sliding assembly (2), and the sliding assembly can synchronously drive the standby display screen area (32) to slide out of the screen back panel (1) and at least partially display side by side with the display screen area (31).

2. The scroll screen device according to claim 1, characterized in that: The sliding assembly (2) comprises: A sliding plate (21) is slidably arranged on a side surface of the screen back plate (1); A mounting joint (22) fixedly mounted in the sliding plate (21); A scissor hinge (23), one end of which is hinged to the screen back panel (1), and the other end of which is hinged to the mounting joint (22); The scissor hinge (23) can adjust its own length by changing the scissor angle, so as to correspondingly drive the mounting joint (22) and the sliding plate (21) to slide along the screen back plate (1).

3. The scroll screen device according to claim 2, characterized in that: The scissor hinge (23) also includes a protruding limit clamp (231); The panel surface of the screen back panel (1) is provided with a limit slot (11) which is perpendicular to the sliding direction of the sliding assembly (2); The limit clamping head (231) is correspondingly inserted into the limit clamping slot (11) and can slide back and forth along the limit clamping slot (11) when the scissor hinge (23) is extended or retracted.

4. The scroll screen device according to claim 3, characterized in that: The scissor hinge (23) is also provided with a hinge spring (232); One end of the hinge spring (232) is connected to the mounting joint (22), and the other end is connected to the limiting clamp (231); The hinge spring (232) can be expanded and contracted synchronously with the scissor hinge (23) to store or release elastic potential energy accordingly.

5. The scroll screen device according to claim 2, characterized in that: The display screen (3) further comprises a display tension spring (24); One side of the standby display screen area (32) is elastically connected to the mounting joint (22) via the display tension spring (24); When the mounting joint (22) slides, the display tension spring (24) can correspondingly extend and retract to drive the standby display screen area (32) to move out or retract on the screen back panel (1).

6. The scroll screen device according to claim 2, characterized in that: The display screen (3) is configured as a flexible display screen, and the display screen area (31) is integrally connected with the standby display screen area (32); The standby display screen area (32) can be bent at an angle of 360° with the display screen area (31) to accommodate two sides of the display screen area (31); Furthermore, the sliding assembly (2) can drive the standby display screen area (32) to extend side by side on both sides of the display screen area (31) either individually or simultaneously.

7. The scroll screen device according to claim 2, characterized in that: The sliding assembly (2) further comprises a sliding shaft (25); The standby display screen area (32) is wrapped around the outer peripheral surface of the sliding shaft (25); The sliding shaft (25) can slide synchronously with the sliding plate (21), and drive the standby display screen area (32) to slide and extend or slide and retract around its own outer peripheral surface.

8. The scroll screen device according to claim 2, characterized in that: The scroll screen device also includes a push-pull member (4); The push-pull member (4) is fixedly arranged on a side of the sliding plate (21) facing away from the scissor hinge (23), and is used to drive the sliding assembly (2) to slide back and forth under external push and pull force.

9. The scroll screen device according to claim 2, characterized in that: Two sliding components (2) are symmetrically arranged in the screen back panel (1); The scissor hinges (23) in the two sliding assemblies (2) are respectively connected to one of the standby display screen areas (32); The two standby display screen areas (32) can slide in opposite directions driven by the sliding assembly (2).

10. An electronic device, characterized in that: It comprises a device body (5) and a scroll screen device as claimed in any one of claims 1 to 9; The scroll screen device is electrically connected to the device body (5), and is capable of displaying image information output by the device body (5) through the display screen area (31) and / or the standby display screen area (32).

Images