Electronic device and control method thereof

Abstract

This application relates to an electronic device and its control method. The electronic device includes a transparent back cover with a support member disposed on it; a flexible display screen slidably mounted on the support member, comprising a main screen and a secondary screen connected to each other; and an external touch layer disposed on the side of the transparent back cover facing the flexible display screen, with the touch surface of the external touch layer facing the transparent back cover and connected to the flexible display screen for controlling the display of the flexible display screen by touching the external touch layer; in a rolled-up state, the secondary screen is located between the main screen and the external touch layer, and there is a movable gap between the secondary screen and the external touch layer; the flexible display screen slides relative to the support member to unfold the flexible display screen, with at least part of the secondary screen and the main screen located on the same side. This electronic device can achieve a double-sided display function, thereby enriching the functionality of the electronic device and improving the utilization rate of the flexible display screen.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to an electronic device and its control method. Background Technology

[0002] With breakthroughs and developments in flexible OLED (Organic Light-Emitting Diode) screen technology, foldable and rollable screen electronic products have entered people's lives. Rollable screen products are novel, with unique and unconventional functions, adding fun to use and bringing unprecedented convenience and visual impact, making their future development prospects very optimistic. However, current rollable OLED screen designs mainly use a front-facing display method, with the screen portion retracted inside the device not displaying anything. This results in less innovative product functions and difficulty in meeting the needs of different users. Summary of the Invention

[0003] The purpose of this application is to provide an electronic device and its control method, which realizes the function of double-sided display of the whole device and can meet the usage needs of different users.

[0004] Therefore, in a first aspect, embodiments of this application provide an electronic device, including:

[0005] A transparent back cover with supporting components;

[0006] A flexible display screen, which is slidably mounted on the support member, includes a main screen and a sub-screen connected to each other;

[0007] An external touch layer is disposed on the side of the transparent back cover facing the flexible display screen. The touch surface of the external touch layer faces the transparent back cover. The external touch layer is connected to the flexible display screen so as to control the display of the flexible display screen by touching the external touch layer.

[0008] When the flexible display screen is in a rolled-up state, the sub-screen is located between the main screen and the external touch layer, and there is a movement gap between the sub-screen and the external touch layer; the flexible display screen slides relative to the support member to make the flexible display screen in an unfolded state, and at least part of the sub-screen and the main screen are located on the same side.

[0009] In one possible implementation, a control motherboard is also included, which is mounted on the support member. The display signal lines and touch signal lines of the flexible display screen are both connected to the control motherboard via a first electrical connector, and the third touch signal line of the external touch layer is connected to the control motherboard via a second electrical connector.

[0010] In one possible implementation, the control motherboard identifies the signal of the third touch signal line of the external touch layer, and controls the signal transmission between the control motherboard and the second display signal line of the sub-screen based on the identification information.

[0011] In one possible implementation, the support member is further provided with a detection element, which is used to detect the position of the sub-screen. The detection element and the second touch signal line of the sub-screen are both connected to the control motherboard. The control motherboard controls the on / off state of the second touch signal line of the sub-screen according to the position of the sub-screen.

[0012] In one possible implementation, the control motherboard controls the on / off state of the third touch signal line of the external touch layer based on the position of the secondary screen.

[0013] When the flexible display screen is in the unfolded state, the third touch signal line of the external touch layer is disconnected, the control motherboard identifies the signal of the second touch signal line of the sub-screen, and controls the signal transmission between the control motherboard and the second display signal line of the sub-screen according to the identification information;

[0014] When the flexible display screen is in a rolled-up state, the second touch signal line of the sub-screen is disconnected. The control motherboard identifies the signal of the third touch signal line of the external touch layer and controls the signal transmission between the control motherboard and the second display signal line of the sub-screen according to the identification information.

[0015] In one possible implementation, when the flexible display screen is in a rolled-up state, the control motherboard controls the signal transmission between itself and the second display signal line of the sub-screen, the second touch signal line of the sub-screen, and the third touch signal line of the external touch layer to be disconnected.

[0016] In one possible implementation, a scroll is rotatably mounted on one side of the support member, and the sub-screen of the flexible display screen is rolled up along the outer wall of the scroll, with the rotation of the scroll causing the sub-screen to move.

[0017] In one possible implementation, the transparent back cover and the external touch layer are integrally formed.

[0018] Secondly, embodiments of this application provide a control method for an electronic device, the method comprising:

[0019] When the flexible display screen is in a rolled-up state, the second touch signal line of the sub-screen is disconnected, the third touch signal line of the detected external touch layer is identified, and the display of the sub-screen is controlled according to the identification information.

[0020] In one possible implementation, when the flexible display screen is in the unfolded state, the third touch signal line of the external touch layer is disconnected, the detected touch signal line of the flexible display screen is identified, and the display of the flexible display screen is controlled according to the identification information.

[0021] According to the electronic device and its control method provided in the embodiments of this application, the secondary screen of the electronic device needs to be rolled up and unfolded during use. The rolling up and unfolding of the secondary screen will cause it to move relative to the transparent back cover. By setting the movement gap, the movement space of the secondary screen is provided to ensure the stability of the movement of the secondary screen, thereby ensuring the reliability of the rollable screen electronic device. When the screen is unfolded, the main screen and the secondary screen are connected to form a whole screen, which expands the display area and the display screen, so that there is more visible area when the screen is pulled open; and by setting the back cover of the electronic device to be a transparent back cover, the display interface of the secondary screen can be displayed when the secondary screen is rolled up. The main screen and the secondary screen can display the same screen or different screens, so that the electronic device can realize the function of double-sided display, thereby enriching the functions of the electronic device and improving the utilization rate of the flexible display screen.

[0022] By attaching an external touch layer and connecting it to the flexible display, the external touch layer can control the display on the flexible screen, improving the stability of the touch function on the back of the electronic device, ensuring user experience, and preventing touch malfunctions in rollable screen devices when the screen is rolled up. Furthermore, the external touch layer can receive independent touch signals, enabling separate touch operations on the secondary screen. In other words, when the screen is unfolded, both the main and secondary screens can be touched simultaneously; when the screen is rolled up, the main and secondary screens can be touched independently, further enriching the functionality of the electronic device and significantly improving the utilization rate of the flexible display. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In addition, in the drawings, the same parts use the same reference numerals, and the drawings are not drawn to scale.

[0024] Figure 1 This illustration shows a schematic diagram of the overall structure of an electronic device according to an embodiment of this application;

[0025] Figure 2 This illustration shows a structural diagram of an electronic device comprising a main screen and a secondary screen, according to an embodiment of this application.

[0026] Figure 3 This illustration shows a cross-sectional view of an electronic device provided in an embodiment of this application;

[0027] Figure 4 This illustration shows a schematic diagram of the structure of an electronic device for embodying a scroll, according to an embodiment of this application.

[0028] Figure 5 This is a top view of a flexible display screen in an electronic device in an unfolded state, according to an embodiment of this application.

[0029] Figure 6 This image shows a top view of a transparent back cover in an electronic device according to an embodiment of this application;

[0030] Figure 7 This illustration shows a structural diagram of an electronic device provided in an embodiment of this application for embodying signal lines of a flexible display screen;

[0031] Figure 8 This is a top view of an external touch layer in an electronic device according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. Electronic devices;

[0034] 10. Flexible display screen; 11. Main screen; 111. First display signal line; 112. First touch signal line; 12. Secondary screen; 121. Second display signal line; 122. Second touch signal line; 13. Display screen bonding area;

[0035] 20. Transparent back cover; 21. Support component; 22. Control motherboard; 23. Reel;

[0036] 30. External touch layer; 31. Third touch signal line; 32. External binding area;

[0037] 40. First electrical connector; 50. Second electrical connector. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] First Embodiment

[0040] like Figures 1-5 As shown, this application provides an electronic device, including:

[0041] A transparent back cover 20, on which a support member 21 is provided;

[0042] A flexible display screen 10 is slidably disposed on the support member 21. The flexible display screen 10 includes a main screen 11 and a secondary screen 12 connected to each other.

[0043] An external touch layer 30 is disposed on the side of the transparent back cover 20 facing the flexible display screen 10. The touch surface of the external touch layer 30 is disposed facing the transparent back cover 20. The external touch layer 30 is connected to the flexible display screen 10 so as to control the display of the flexible display screen 10 by touching the external touch layer 30.

[0044] When the flexible display screen 10 is in a rolled-up state, the secondary screen 12 is located between the main screen 11 and the external touch layer 30, and there is a movement gap between the secondary screen 12 and the external touch layer 30; the flexible display screen 10 slides relative to the support member 21 so that the flexible display screen 10 is in an unfolded state, and at least part of the secondary screen 12 is located on the same side as the main screen 11.

[0045] The secondary screen 12 needs to be rolled up and unfolded during use. This rolling up and unfolding causes movement relative to the transparent back cover 20. The adjustable gap provides space for the movement of the secondary screen 12, ensuring its stability and thus guaranteeing the reliability of the rollable electronic device 100. When unfolded, the main screen 11 and secondary screen 12 connect to form a single screen, expanding the display area and display content, resulting in a larger visible area when the screen is pulled open. By using a transparent back cover 20, the secondary screen 12 can still display its interface when rolled up. The main screen 11 and secondary screen 12 can display the same image or different images, enabling the electronic device 100 to achieve dual-sided display functionality. This enriches the functionality of the electronic device 100 and improves the utilization rate of the flexible display screen 10.

[0046] By setting up an external touch layer 30 and connecting it to the flexible display screen 10, the display of the flexible display screen 10 can be controlled via the external touch layer 30. This improves the stability of the touch function on the back of the electronic device 100, ensures user safety, and avoids touch malfunctions when the screen of the rollable electronic device 100 is rolled up. Furthermore, the external touch layer 30 can receive independent touch signals, enabling separate touch operations on the secondary screen 12. In other words, when the screen is unfolded, the main screen 11 and the secondary screen 12 can be touched together; when the screen is rolled up, the main screen 11 and the secondary screen 12 can be touched independently, further enriching the functionality of the electronic device and significantly improving the utilization rate of the flexible display screen 10.

[0047] Specifically, the moving gap is the air layer formed between the sub-screen 12 and the external touch layer 30 during the installation of the electronic device 100. The thickness of the air layer is small, which is sufficient to ensure the stable rolling and unfolding of the flexible display screen 10, while also minimizing the overall thickness of the electronic device 100.

[0048] Reference Figures 1-4 Optionally, the transparent back cover 20 can be made of glass or plastic. Of course, the transparent back cover 20 can also be made of other materials, as long as the transparent back cover 20 is transparent after preparation. The transparency of the transparent back cover 20 ensures that the content displayed on the secondary screen 12 can be displayed, thereby realizing the dual-sided display function of the electronic device 100.

[0049] Optionally, the transparent back cover 20 and the external touch layer 30 are integrally formed, integrating the external touch layer 30 onto the transparent back cover 20 to ensure the stability of the connection of the external touch layer 30, thereby ensuring the touch function of the electronic device 100. Simultaneously, integrating the external touch layer 30 onto the transparent back cover 20 facilitates the installation and removal of the electronic device 100. Of course, during the installation of the electronic device 100, the external touch layer 30 can also be adhered to the transparent back cover 20 using transparent adhesive to achieve a stable connection between the external touch layer 30 and the transparent back cover 20.

[0050] See Figures 1-4In some embodiments, the electronic device 100 further includes a power supply unit and an electric drive component. The power supply unit is electrically connected to the electric drive component to provide power to it. Optionally, the power supply unit can be a mobile power source connected to the outside of the electronic device 100 or an external mains power source. Of course, the power supply unit can also be a battery installed inside the electronic device 100. The rotating end of the electric drive component is electrically connected to a roller 23. The roller 23 is rotatably mounted on one side of the support member 21. The sub-screen 12 of the flexible display screen 10 is rolled up along the outer wall of the roller 23. The electric drive component drives the roller 23 to rotate, and the rotation of the roller 23 drives the sub-screen 12 to move, thereby realizing the rolling and unfolding of the flexible display screen 10. The electric drive component can be any component that can drive the roller 23 to rotate, such as a motor or electric motor. The roller 23 allows the flexible display screen 10 to move around the roller 23 to achieve the sliding of the flexible display screen 10 relative to the transparent back cover 20. The roller 23 can provide support and a center of rotation, making the flexible display screen 10 roll up or unfold stably. Specifically, the scroll 23 is disposed on one side of the transparent back cover 20 in the width direction to facilitate the use of the flexible display screen 10, for example, in combination with Figure 4 When the scroll 23 rotates clockwise, it drives the secondary screen 12 to move closer to the main screen 11. This process is the unfolding process of the flexible display. When the secondary screen 12 moves to its maximum limit position, at least part of the secondary screen 12 and the main screen 11 are on the same side. This is the unfolded state of the flexible display. When the scroll 23 rotates counterclockwise in the unfolded state, it drives the secondary screen 12 to move away from the main screen 11 and rolls up along the outer wall of the scroll 23. This process is the rolling process of the flexible display. When the secondary screen 12 moves to its maximum limit position, it is located between the main screen 11 and the external touch layer 30. This is the rolled state of the flexible display.

[0051] Reference Figure 1 , Figure 3 and Figure 7In some embodiments, the electronic device 100 further includes a control motherboard 22, which is disposed on the support member 21. The display signal line of the flexible display screen 10 and the third touch signal line 31 of the external touch layer 30 are both connected to the control motherboard 22. The control motherboard 22 controls the connection and disconnection of the internal circuits of the electronic device 100. After receiving the touch signal from the external touch layer 30, the control motherboard 22 controls the display of the flexible display screen 10, thereby linking the external touch layer 30 and the flexible display screen 10. This allows the back of the electronic device 100 to also have display and touch functions when the flexible display screen 10 is in a rolled-up state, ensuring the integrity of the dual-sided touch function of the electronic device 100 and further enriching the overall functionality of the electronic device 100. Optionally, the control motherboard 22 and the scroll 23 are located on opposite sides of the support member 21 in the width direction.

[0052] Combination Figure 4 and Figure 5 Specifically, the display signal lines and touch signal lines of the flexible display screen 10 are both connected to the control motherboard 22 via the first electrical connector 40. The flexible display screen 10 includes a main screen 11 and a secondary screen 12. Therefore, the display signal lines of the flexible display screen 10 include the first display signal line 111 of the main screen 11 and the second display signal line 121 of the secondary screen 12; the touch signal lines of the flexible display screen 10 include the first touch signal line 112 of the main screen 11 and the second touch signal line 122 of the secondary screen 12. Of course, the first electrical connector 40 can be any component capable of electrical connection and transmission, such as a flexible circuit board or a flip-chip thin film layer. A display bonding area 13 is formed on the flexible display screen 10. The display bonding area 13 is located on the side of the sub-screen 12 away from the main screen 11. The first electrical connector 40 is bonded to the display bonding area 13. In addition, since the flexible display screen 10 will be rolled up and unfolded, the position of the sub-screen 12 relative to the support member 21 will move accordingly. Therefore, the first electrical connector 40 can be in a folded state to ensure that the movement of the flexible display screen 10 will not affect its connection with the control motherboard 22. The first display signal line 111 and the first touch signal line 112 of the main screen 11 are connected to the control motherboard 22 through the first electrical connector 40. Therefore, when the main screen 11 is touched, the control motherboard 22 receives the touch signal and then sends a signal to the first display signal line 111 of the main screen 11, which then operates to realize the display of the main screen 11. Similarly, the second display signal line 121 and the second touch signal line 122 of the secondary screen 12 are connected to the control motherboard 22 through the first electrical connector 40. When the secondary screen 12 is touched, the control motherboard 22 receives the touch signal and then sends a signal to the second display signal line 121 of the secondary screen 12, which then operates to realize the display of the secondary screen 12.

[0053] Reference Figure 6 and Figure 8 The third touch signal line 31 of the external touch layer 30 is connected to the control motherboard 22 via a second electrical connector 50. The second electrical connector 50 can be any component capable of electrical connection and transmission, such as a flexible circuit board or a flip-chip thin film layer. An external bonding area 32 is formed on the transparent back cover 20, located at the edge of the transparent back cover 20. The second electrical connector 50 is bonded to the external bonding area 32. The external touch layer 30 is connected to the control motherboard 22 and transmits signals through the second electrical connector 50 located in the external bonding area 32.

[0054] See Figure 1 as well as Figures 5-8 In some embodiments, the control motherboard 22 identifies the signal of the detected third touch signal line 31 of the external touch layer 30, and controls the signal transmission between the control motherboard 22 and the second display signal line 121 of the secondary screen 12 according to the identification information. Specifically, the control motherboard 22 detects the third touch signal line 31 of the external touch layer 30 in real time and determines whether its change reaches a threshold. When it is determined that the change reaches the threshold, the control motherboard 22 sends a signal to the second display signal line 121 of the secondary screen 12, and the secondary screen 12 realizes display, realizing the linkage between the touch function of the external touch layer 30 and the display function of the secondary screen 12. This allows the back of the electronic device 100 to have display and touch functions even when the flexible display screen 10 is in a rolled-up state, while also ensuring that the display content of the main screen 11 is not affected by the external touch layer 30.

[0055] See Figure 1 , Figure 3 and Figure 7In some embodiments, to ensure the stable use of the electronic device 100, a detection element is also provided on the support member 21. The detection element is used to detect the position of the secondary screen 12. The detection element and the second touch signal line 122 of the secondary screen 12 are both connected to the control motherboard 22. The control motherboard 22 controls the on / off state of the second touch signal line 122 of the secondary screen 12 according to the position of the secondary screen 12. When the detection element detects that the secondary screen 12 is located in front of the electronic device 100, that is, the flexible display screen 10 is in the unfolded state. In this state, the display layer of the electronic device 100 is located in front of the electronic device 100, and the user does not need to operate the back of the electronic device 100. At this time, after the control motherboard 22 detects that the change of the second touch signal line 12 of the secondary screen 12 reaches the threshold, the control motherboard 22 controls the second display signal line 121 of the secondary screen 12 to send a signal. The user touches the secondary screen 12 in front of the electronic device 100 to realize the linkage of the display of the secondary screen 12. When the detection device detects that the secondary screen 12 is located on the back of the electronic device 100, that is, when the flexible display screen 10 is in a rolled-up state, the control motherboard 22 will not send a signal to the second display signal line 121 of the secondary screen 12 after detecting that the change of the second touch signal line 12 of the secondary screen 12 reaches the threshold, so that the display of the secondary screen 12 will not be triggered.

[0056] Optionally, the detection element includes a sensor or other mechanism capable of detecting the position of the sub-screen 12. For example, the detection element could be an accelerometer, which obtains the acceleration of the flexible display screen 10 to determine whether the flexible display screen 10 has moved, thereby obtaining the current position of the sub-screen 12 based on the initial position of the flexible display screen 10. Alternatively, the detection element could be a sensing sensor, which detects whether the sub-screen 12 has moved relative to it, thereby determining the position of the sub-screen 12.

[0057] See Figure 1 , Figure 3 , Figure 7 and Figure 8In some embodiments, the first display signal line 111 of the main screen 11 is connected to the control motherboard 22. The control motherboard 22 controls the signal transmission between the secondary screen 12 and the third touch signal line 31 of the external touch layer 30 based on the position of the secondary screen 12 and the detected signal of the third touch signal line 31 of the external touch layer 30. When the flexible display screen 10 is in the unfolded state, the secondary screen 12 is located on the front of the electronic device. The control motherboard 22 does not react to the detected changes in the third touch signal line 31. That is, touching the external touch layer 30 will not affect the display function and touch function of the flexible display screen 10. Therefore, touching the external touch layer 30 will not produce a corresponding reaction from the electronic device 100, so as to ensure the stability of user use and avoid the user accidentally touching the back of the electronic device 100 and affecting the display content on the front of the electronic device 100 when the flexible display screen 10 is unfolded. Simultaneously, after detecting a change in the first touch signal line 112 of the main screen 11 reaching a threshold, the control motherboard 22 sends a signal to the first display signal line 111 of the main screen 11, allowing touch of the main screen 11 to control its display. Similarly, after detecting a change in the second touch signal line 122 of the secondary screen 12 reaching a threshold, the control motherboard 22 sends a signal to the second display signal line 121 of the secondary screen 12, allowing touch of the secondary screen 12 to control its display. In other words, the display signal lines and touch signal lines of the flexible display screen 10 are interconnected, thus the content displayed on the flexible display screen 10 can be controlled by manipulating it. At this time, the screen unfolds, and the main screen 11 and the secondary screen 12 are connected, allowing for the display of a complete and multi-screen image.

[0058] Of course, when the flexible display screen 10 is in a rolled-up state, after the control motherboard 22 detects that the change in the third touch signal line 31 of the external touch layer 30 reaches a threshold, the control motherboard 22 will send a signal to the second display signal line 121 of the secondary screen 12, thereby triggering the display of the secondary screen 12. At the same time, the control motherboard 22 can also simultaneously send a signal to the first display signal line 111 of the main screen 11, thereby triggering the display of the main screen 11. This is the dual-sided display state of the electronic device, which meets the user's need for the front and back of the electronic device to be displayed simultaneously. For example, when the electronic device is detected to be in camera mode, the control motherboard 22 switches to the dual-sided display state, and the main screen 11 and the secondary screen 12 simultaneously display the shooting image. At this time, the main screen 11 and the secondary screen 12 display the same image. When the user touches the external touch layer 30, after the control motherboard 22 detects that the change in the third touch signal line 31 of the external touch layer 30 reaches a threshold, the control motherboard 22 will simultaneously send signals to the first display signal line 111 and the second display signal line 121, realizing the simultaneous display of the main screen 11 and the secondary screen 12. At this time, the main screen 11 and the secondary screen 12 simultaneously display the shooting image, making it more convenient for users to take photos with the electronic device. Of course, the electronic device can also achieve dual-screen display in other modes. The specific situation can be selectively adapted by the system according to the corresponding system software, or the user can set it according to actual usage needs. This embodiment does not limit this.

[0059] Of course, when the flexible display screen 10 is in a rolled-up state, after the control motherboard 22 detects that the change of the third touch signal line 31 of the external touch layer 30 reaches the threshold, the control motherboard 22 will send a signal to the second display signal line 121 of the secondary screen 12, but not to the first display signal line 111 of the main screen 11, thereby triggering the display of the secondary screen 12 without triggering the display of the main screen 11. That is, the user can control the external touch layer 30 without affecting the content display of the main screen 11.

[0060] See Figure 1 , Figure 3 , Figure 7 and Figure 8In some embodiments, the control motherboard 22 controls the on / off state of the third touch signal line 31 of the external touch layer 30 according to the position of the secondary screen 12. When the flexible display screen 10 is in the unfolded state, the third touch signal line 31 of the external touch layer 30 is disconnected. The control motherboard 22 identifies the signal detected by the second touch signal line 122 of the secondary screen 12 and controls the signal transmission between the control motherboard 22 and the second display signal line 121 of the secondary screen 12 according to the identification information. That is, when the flexible display screen 10 is in the unfolded state, the control motherboard 22 does not react to the signal detected by the third touch line 31, and touching the external touch layer 30 will not affect the display of the secondary screen 12. When the control motherboard 22 reacts to the signal detected by the second touch signal line 122 of the secondary screen 12, it sends a signal to the second display signal line 121 of the secondary screen 12, thereby realizing the corresponding display of the secondary screen 12 by touching the secondary screen 12. At this time, the content display of the secondary screen 12 is controlled by the second touch signal line 122 of the secondary screen 12, and is not affected by the third touch signal line 31 of the external touch layer 30, thus ensuring the stability of the touch of the secondary screen 12.

[0061] When the flexible display screen 10 is in a rolled-up state, the second touch signal line 122 of the secondary screen 12 is disconnected. The control motherboard 22 identifies the signal detected by the third touch signal line 31 of the external touch layer 30 and controls the signal transmission between the control motherboard 22 and the second display signal line 121 of the secondary screen 12 based on the identification information. When the flexible display screen 10 is in a rolled-up state, the control motherboard 22 does not respond to the signal transmitted by the second touch signal line 122. At this time, touching the second touch signal line 122 will not affect the display of the secondary screen 12. The second touch signal line 122 of the secondary screen 12 does not perform signal writing or detection. The content display of the secondary screen 12 is not controlled by the second touch signal line 122 of the secondary screen 12, but is controlled by the third touch signal line 31 of the external touch layer 30. This ensures that when the secondary screen 12 is used alone, the touch performance of the secondary screen 12 is no different from that of the main screen 11, thereby ensuring the stability of the touch display function on the back of the electronic device 100. The control motherboard 22 responds to the signal detected by the third touch signal line 31 of the external touch layer 30 and sends a signal to the second display signal line 121, thereby enabling the secondary screen 12 to display corresponding content by touching the external touch layer 30. At this time, the content display of the secondary screen 12 is controlled by the third touch signal line 31 of the external touch layer 30, and is not affected by the second touch signal line 12 of the secondary screen 12, ensuring the stability of the touch response on the secondary screen 12. In other words, the secondary screen 12 and the main screen 11 are controlled and displayed independently. The secondary screen 12 displays its image independently by touching the external touch layer 30 on the back of the screen, while the main screen 11 does not display any image.

[0062] The control motherboard 22 identifies the signal, monitors its changes, and determines whether the change reaches a threshold. If the threshold is not reached, no action is taken; otherwise, an appropriate action is taken. The signal change can be a change in voltage or capacitance, and the value of the change can be adaptively selected based on different sensitivity requirements.

[0063] Furthermore, when the flexible display screen 10 is in a rolled-up state, the control motherboard 22 controls the signal transmission between itself and the second display signal line 121 of the secondary screen 12, the second touch signal line 122 of the secondary screen 12, and the third touch signal line 31 of the external touch layer 30 to be disconnected. At this time, only after the signal change of the first touch signal line 112 of the main screen 11 reaches a threshold is detected that the control motherboard 22 transmits a signal to the first display signal line 111 of the main screen 11, and the main screen 11 displays. That is, when the flexible display screen 10 is rolled up, only the main screen 11 located on the front of the electronic device 100 displays, while the secondary screen 12 does not display. Only the pixels and touch of the area of ​​the main screen 11 are active. The secondary screen 12 and the external touch layer 30 are not active, and the second electrical connector 50 does not transmit signals. The content display of the main screen 11 can be controlled by touching the main screen 11, and the user touching the back of the electronic device 100 will not affect the content display of the electronic device 100.

[0064] Of course, when the flexible display screen 10 is in a rolled-up state, after the control motherboard 22 detects that the change in the first touch signal line 112 of the main screen 11 reaches a threshold, the control motherboard 22 sends a signal to the first display signal line 111 of the main screen 11. That is to say, the secondary screen 12 and the main screen 11 are controlled and displayed separately. In the rolled-up state, the main screen 11 can be touched to display an image, while the secondary screen 12 will not display an image when the external touch layer 30 on the back of the screen is touched. In this case, the control motherboard 22 can also send a signal to the second display signal line 121 of the secondary screen 12 after detecting that the change in the third touch signal line 31 of the external touch layer 30 reaches a threshold; thus, the content display of the main screen 11 can be controlled by touching the main screen 11, and the content display of the secondary screen 12 can be controlled by touching the external touch layer 30, that is, the main screen 11 and the secondary screen 12 display different images.

[0065] Second Embodiment

[0066] This embodiment provides an electronic device, which is a further improvement on the first embodiment.

[0067] In this embodiment, the detection element is used to detect the position of the sub-screen 12. When the sub-screen 12 is stretched or rolled up, the detection element detects the position of the sub-screen 12, and controls the display of the main screen 11 and the sub-screen 12 by controlling the position of the sub-screen 12.

[0068] When the secondary screen 12 is stretched or rolled up, the stretched portion is referred to as the stretched portion and the rolled-up portion as the rolled-up portion. The rolled-up and stretched portions are called the dividing point. Using the control motherboard 22, it is possible to display only the rolled-up portion of the flexible display screen 10, only the stretched portion, or both the rolled-up and stretched portions of the secondary screen simultaneously. The content displayed simultaneously can be the same or different.

[0069] In the first scenario, only the rolled-up portion of the secondary screen is displayed. In this case, for the rolled-up portion of the secondary screen, after the control motherboard 22 detects that the change in the third touch signal line 31 of the external touch layer 30 reaches a threshold, the control motherboard 22 sends a signal to the second display signal line of the secondary screen 12. Simultaneously, the control motherboard 22 cuts off the signals of the first touch signal line 112, the second touch signal line 122, and the first display signal line 111, causing the main screen 11 to not display. In the second display signal line 121 of the secondary screen 12, using the dividing point as a boundary, the control motherboard 22 sends a black screen data signal to the second display signal line 121 above the dividing point, causing the unfolded portion of the secondary screen 12 to display a black screen, while the main screen 11 does not display, thus keeping the unfolded portion of the flexible display screen 10 completely black, similar to not displaying a screen. At the same time, the control motherboard 22 sends a normal data signal to the second display signal line 121 below the dividing point, causing the rolled-up portion of the secondary screen to display a normal screen.

[0070] In the second scenario, only the extended portion of the secondary screen and the main screen 11 are displayed. In this case, for the retracted portion of the secondary screen, the control motherboard 22 cuts off the third touch signal line 31 of the external touch layer 30. Using the dividing point as the boundary, the control motherboard 22 provides a black screen data signal to the second display signal line 121 below the dividing point, causing the retracted portion of the secondary screen to display a black screen, meaning the retracted portion of the secondary screen is not displayed. Furthermore, the control motherboard 22 provides a normal data signal to the second display signal line 121 above the dividing point. The control motherboard 22 also provides normal signals to the first touch signal line 112 and the first display signal line 111 of the main screen 11, and the second touch signal line 122 of the secondary screen 12, thereby enabling the extended portion of the secondary screen and the main screen 11 to complete normal display and touch operation.

[0071] In the third scenario, the retracted and extended portions of the secondary screen are displayed simultaneously. In this case, for the retracted portion of the secondary screen, the control motherboard 22 controls the third touch signal line 31 of the external touch layer 30 to receive a signal. Once the control motherboard 22 detects that the change in the third touch signal line 31 of the external touch layer 30 reaches a threshold, it sends a signal to the second display signal line 121 below the dividing point of the secondary screen 12, allowing the retracted portion of the secondary screen to independently receive the signal from the second display signal line 121 and display one image. Simultaneously, the control motherboard 22 controls the first touch signal line 11... 2. When the signals of the second touch signal line 122, the first display signal line 111, and the second display signal line 121 above the dividing point of the secondary screen 12 are connected, the control motherboard 22 realizes the touch operation and display of the main screen 11 through the first touch signal line 112 and the first display signal line 111, and realizes the touch operation and display of the unfolded part of the secondary screen through the second touch signal line 122 and the second display signal line 121 above the dividing point of the secondary screen 12. The control motherboard 22 controls the main screen 11 and the unfolded part of the secondary screen 12 to display the same image through signal control. That is to say, in the third case, the back of the electronic device (the retracted part of the secondary screen) displays one image, and the front of the electronic device (the unfolded part of the secondary screen and the main screen 11) displays another image.

[0072] In this embodiment, by combining the external touch layer 30, transparent back panel, detection device and control timing, the electronic device can display the folded part of the secondary screen 12 separately or not at all when the secondary screen 12 is partially folded and partially unfolded. The folded part of the secondary screen can also display different images simultaneously with the main screen 11 and the unfolded part of the secondary screen, thereby increasing the functionality and scenarios of the electronic device and enhancing its usability.

[0073] Third Embodiment

[0074] like Figures 1-8 As shown in the embodiments of this application, a control method for an electronic device is also provided, including:

[0075] When the flexible display screen 10 is in a rolled-up state, the second touch signal line 122 of the control sub-screen 12 is disconnected, the third touch signal line 31 of the detected external touch layer 30 is identified, and the display of the sub-screen 12 is controlled according to the identification information.

[0076] The secondary screen 12 of the electronic device 100 adopts a dual-touch structure. When the flexible display screen 10 is in a rolled-up state, the signal information of the third touch signal line 31 of the external touch layer 30 is monitored. When the signal change reaches a threshold, a signal is sent to the second display signal line 121 of the secondary screen 12, and the secondary screen 12 realizes display. The second touch signal line 122 of the secondary screen 12 is disconnected, that is, the touch function of the external touch layer 30 can be used independently. The touch function of the secondary screen 12 does not write or detect signals. The touch function of the external touch layer 30 and the display function of the secondary screen 12 are linked by signals, so that the secondary screen 12 can realize independent touch and display, and its touch performance can be guaranteed. This allows the electronic device 100 to realize the dual-sided display function and also ensure the integrity of the dual-sided touch function, thereby improving the technical level and functional richness of the product.

[0077] See Figure 1 , Figure 3 , Figure 7 and Figure 8 In some embodiments, when the flexible display screen 10 is in the unfolded state, the third touch signal line 31 of the external touch layer 30 is disconnected to identify the detected touch signal line of the flexible display screen, and the display of the flexible display screen 10 is controlled according to the identification information. The signal of the third touch signal line 31 of the external touch layer 30 is not written or detected, the touch information of the flexible display screen 10 is detected, and the signal to be displayed on the flexible display screen 10 is controlled according to the information, thereby realizing the display of the flexible display screen 10 by touching the flexible display screen 10.

[0078] When the flexible display screen 10 is unfolded, both the main screen 11 and the secondary screen 12 are located on the front of the electronic device 100. Users can control the content displayed on the flexible display screen 10 by touching the front of the electronic device 100, without having to control the content displayed on the flexible display screen 10 through the back of the electronic device 100. In this case, the third touch signal line 31 of the external touch layer 30 is disconnected, thereby ensuring that the user's touch on the external touch layer 30 will not affect the content display of the flexible display screen 10, thus ensuring the reliability and stability of the user's use.

[0079] It should be noted that this application provides an electronic device with a flexible display screen 10. Those skilled in the art will know that when the secondary screen 12 is located on the back of the electronic device 100, it is in the rolled-up state of the flexible display screen 10, and when the secondary screen 12 is located on the front of the electronic device 100, it is in the unfolded state of the flexible display screen 10.

[0080] It should be noted that, for ease of description and understanding, the flexible display screen 10 is divided into two parts: a main screen 11 and a secondary screen 12. However, the main screen 11 and the secondary screen 12 are actually a single, flexibly rollable screen, and their basic structure is the same as that of ordinary flexible screens in this field. For example, the data signal of the main screen 11 and the data signal of the secondary screen 12 in this application are from the same source.

[0081] Furthermore, the display signal lines and touch signal lines in the accompanying drawings are merely illustrative representations to facilitate a clear understanding of the technical solutions presented in this application. Those skilled in the art can clearly understand the actual positions and connections of the display signal lines and touch signal lines based on the illustrative representations in the accompanying drawings and in conjunction with common knowledge in the field. Additionally, for ease of description, only one signal line is shown as an example in each of the accompanying drawings. According to common knowledge in the field, electronic devices are actually manufactured with multiple display signal lines and touch signal lines, the specific number of which varies depending on the different performance requirements of different electronic devices.

[0082] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0083] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0084] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0085] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electronic device, comprising: include: A transparent back cover with supporting components; A flexible display screen, which is slidably mounted on the support member, includes a main screen and a sub-screen connected to each other; An external touch layer is disposed on the side of the transparent back cover facing the flexible display screen. The touch surface of the external touch layer faces the transparent back cover. The external touch layer is connected to the flexible display screen so as to control the display of the flexible display screen by touching the external touch layer. When the flexible display screen is in a rolled-up state, the sub-screen is located between the main screen and the external touch layer, and there is a movement gap between the sub-screen and the external touch layer; the flexible display screen slides relative to the support member to make the flexible display screen in an unfolded state, and at least part of the sub-screen and the main screen are located on the same side; It also includes a control motherboard mounted on the support member. The display signal lines of the flexible display screen include a first display signal line of the main screen and a second display signal line of the sub-screen. The touch signal lines of the flexible display screen include a first touch signal line of the main screen and a second touch signal line of the sub-screen. The first display signal line and the first touch signal line of the main screen are connected to the control motherboard via a first electrical connector. The second display signal line and the second touch signal line of the sub-screen are also connected to the control motherboard via the first electrical connector. The third touch signal line of the external touch layer is connected to the control motherboard via a second electrical connector. The support member is also provided with a detection element, which is used to detect the position of the sub-screen. The detection element is connected to the control motherboard, and the control motherboard controls the on / off state of the second touch signal line of the sub-screen according to the position of the sub-screen. The detection device is an accelerometer or a sensor. The accelerometer obtains the acceleration of the flexible display screen to determine whether the flexible display screen is moving, thereby obtaining the current position of the sub-screen based on the initial position of the flexible display screen. The sensing sensor determines the position of the secondary screen by detecting whether the secondary screen has moved relative to it. The control motherboard controls the on / off state of the third touch signal line of the external touch layer according to the position of the secondary screen. When the flexible display screen is in the unfolded state, the third touch signal line of the external touch layer is disconnected, the control motherboard identifies the signal of the second touch signal line of the sub-screen, and controls the signal transmission between the control motherboard and the second display signal line of the sub-screen according to the identification information; When the flexible display screen is in a rolled-up state, the second touch signal line of the sub-screen is disconnected. The control motherboard identifies the signal of the third touch signal line of the external touch layer and controls the signal transmission between the control motherboard and the second display signal line of the sub-screen according to the identification information.

2. The electronic device according to claim 1, characterized in that, The control motherboard identifies the signal of the third touch signal line of the external touch layer, and controls the signal transmission between the control motherboard and the second display signal line of the sub-screen based on the identification information.

3. The electronic device according to claim 1, characterized in that, When the flexible display screen is in a rolled-up state, the control motherboard disconnects the signal transmission between itself and the second display signal line of the sub-screen, the second touch signal line of the sub-screen, and the third touch signal line of the external touch layer.

4. The electronic device according to any one of claims 1-3, characterized in that, A scroll is rotatably mounted on one side of the support member. The sub-screen of the flexible display screen is rolled up along the outer wall of the scroll, and the rotation of the scroll causes the sub-screen to move.

5. The electronic device according to any one of claims 1-3, characterized in that, The transparent back cover and the external touch layer are integrally formed.

6. A control method for an electronic device as described in any one of claims 1-5, characterized in that, The method includes: When the flexible display screen is in a rolled-up state, the second touch signal line of the control sub-screen is disconnected, the third touch signal line of the detected external touch layer is identified, and the display of the sub-screen is controlled according to the identification information.

7. The control method for an electronic device according to claim 6, characterized in that, When the flexible display screen is in the unfolded state, the third touch signal line of the external touch layer is disconnected, the detected touch signal line of the flexible display screen is identified, and the display of the flexible display screen is controlled according to the identification information.

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