Foldable electronic device and control method therefor

Abstract

A foldable electronic device and a control method therefor. The foldable electronic device comprises a foldable housing (100), a first display screen (200), a heating unit (300) and a control unit (400), wherein the foldable housing (100) comprises a first housing (110), a second housing (120), and a rotating shaft mechanism (130) arranged at the joint of the first housing (110) and the second housing (120); the first display screen (200) has a first screen area (201), a second screen area (202) and a bending area (203), the first screen area (201) being arranged on the first housing (110), the second screen area (202) being arranged on the second housing (120), and the bending area (203) being arranged on the rotating shaft mechanism (130); the heating unit (300) is used for heating at least the bending area (203) of the first display screen (200); and the control unit (400) is used for acquiring a first temperature value of the bending area (203) and, when the first temperature value is less than a temperature threshold, controlling the heating unit (300) to heat at least the bending area (203). The foldable electronic device and the control method, which are applicable to foldable mobile phones and foldable tablets, can solve the problem of display screens in foldable electronic devices being prone to damage in the related art.

Description

Foldable electronic devices and their control methods

[0001] This application claims priority to Chinese Patent Application No. 202410392382.0, filed on March 29, 2024, entitled "Foldable Electronic Device and Control Method Thereof", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of foldable electronic device technology, and more particularly to a foldable electronic device and its control method. Background Technology

[0003] Foldable electronic devices, such as foldable phones and foldable tablets, are characterized by their ability to fold. When unfolded, they provide a larger display area, while maintaining portability when folded. As a result, they are becoming increasingly popular among users.

[0004] The display screen is one of the main components of foldable electronic devices. This display uses flexible screen technology, allowing it to be bent for easy folding. Bending capability is a crucial indicator of a display screen's performance. The bending capability of a display screen is related to temperature. At room temperature, the display material has good flexibility and can be bent repeatedly without damage. However, in low-temperature environments, the display material becomes more rigid, reducing the display's bending capability. Folding or unfolding the display in low temperatures can then damage it. Therefore, ensuring the safe use of foldable electronic devices in low-temperature environments has become a significant challenge in the industry.

[0005] One type of foldable electronic device in related technologies usually includes a warning "Do not fold in low temperatures" in its product packaging or user manual. However, users rarely pay attention to this warning and are prone to folding or unfolding the device in low-temperature environments, which can damage the display screen. Summary of the Invention

[0006] Embodiments of this application provide a foldable electronic device and a control method thereof, which solves the problem that the display screen of foldable electronic devices in related technologies is easily damaged.

[0007] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0008] In a first aspect, embodiments of this application provide a foldable electronic device, including a foldable housing, a first display screen, a heating unit, and a control unit; the foldable housing includes a first housing, a second housing, and a pivot mechanism disposed at the junction of the first housing and the second housing, the first housing and the second housing being switchable between an unfolded state and a folded state; the first display screen has a first screen area, a second screen area, and a bending area, the first screen area being disposed on the first housing, the second screen area being disposed on the second housing, and the bending area being disposed on the pivot mechanism; the heating unit is used to heat at least the bending area of ​​the first display screen, and the control unit is used to: obtain a first temperature value of the bending area; and when the first temperature value is less than a temperature threshold, control the heating unit to heat at least the bending area.

[0009] The foldable electronic device in this embodiment of the application, by setting a heating unit, can control the heating unit to heat the bending area of ​​the first display screen when the foldable electronic device is in a low temperature environment and the first temperature value of the bending area is less than the temperature threshold, so as to raise the temperature of the bending area and improve the bending performance of the bending area of ​​the first display screen, thereby reducing damage to the first display screen when the user performs folding and unfolding operations.

[0010] In some embodiments of the first aspect, along the thickness direction of the first display screen, the first display screen includes a support layer, a flexible panel disposed on the support layer, and a touch layer disposed on the flexible panel, with a heating unit disposed between the touch layer and the support layer. This arrangement allows for a more compact structure between the foldable housing and the first display screen, which helps to reduce the number of components in the foldable electronic device.

[0011] In some embodiments of the first aspect, the heating unit is at least composed of a flexible panel; the control unit is configured to: when a first temperature value is less than a temperature threshold, control the brightness of the flexible panel to increase to a first brightness value. This configuration eliminates the need for an additional heating unit, which helps reduce the cost of foldable electronic devices.

[0012] In some embodiments of the first aspect, the first brightness value is the maximum brightness value of the flexible panel. This setting allows the flexible panel to generate more heat, thereby improving the heating effect on the bending area.

[0013] In some embodiments of the first aspect, the control unit is configured to: control the brightness of the flexible panel to decrease to a second brightness value when a first temperature value is greater than or equal to a temperature threshold; wherein the second brightness value is less than the first brightness value. This configuration helps to save power in foldable electronic devices.

[0014] In some embodiments of the first aspect, the heating unit includes a heating wiring layer disposed between the support layer and the flexible panel, with at least a portion of the heating wiring layer located in the bending region. This configuration, by setting the heating unit as a heating wiring layer, simplifies the structure of the heating unit and reduces its space requirements. Furthermore, by placing the heating wiring layer between the support layer and the flexible panel, the impact of the heating wiring layer on the light emission of the flexible panel is reduced.

[0015] In some embodiments of the first aspect, the heating unit includes multiple heating trace layers, which are stacked together. This arrangement is beneficial for improving the heating effect of the heating unit on the bending area.

[0016] In some embodiments of the first aspect, the heating trace layer includes a carrier layer and heating traces disposed on the carrier layer, wherein the heating traces are serpentine. This configuration is beneficial for improving the heating effect of the heating traces on the bending area.

[0017] In some embodiments of the first aspect, the heating traces are ITO traces. This configuration not only makes the heating traces easier to manufacture but also reduces the impact on the display effect of the first display screen.

[0018] In some embodiments of the first aspect, the heating unit includes a bendable heating element disposed between the first display screen and the foldable housing. The heating element has a first heating element area, a second heating element area, and a third heating element area. The first heating element area is disposed on the first housing, the second heating element area is disposed on the second housing, and the third heating element area is disposed on the rotating shaft mechanism. This bendable configuration of the heating element increases the heat transfer area between the heating element and the bend area of ​​the first display screen, thereby improving the heating effect of the heating element on the bend area. Simultaneously, the heating element can direct heat from the hotter housing (first or second) to the other, thus facilitating heat dissipation of the electronic components within the first and second housings.

[0019] In some embodiments of the first aspect, along the thickness direction of the heating element, the heating element includes a first thermally conductive layer and a second thermally conductive layer stacked together. The first thermally conductive layer is a metal layer or an alloy layer, and the second thermally conductive layer is a graphite layer. This arrangement increases the heat diffusion path, which is beneficial for uniform heat distribution on the heating element. At the same time, it also increases the overall specific heat capacity of the heating element, reduces heat loss, and thus allows the heating element to continuously heat the bending area in low-temperature environments.

[0020] In some embodiments of the first aspect, the first thermally conductive layer is disposed on the side of the second thermally conductive layer closer to the first display screen. This arrangement can improve the heating effect of the heating element on the bending area.

[0021] In some embodiments of the first aspect, the thickness of the first thermally conductive layer is less than the thickness of the second thermally conductive layer. This arrangement is beneficial for improving the flexibility of the heating element.

[0022] In some embodiments of the first aspect, a perforated portion is provided on the first heat-conducting layer, the perforation being at least partially located in the third heating element area and penetrating the first heat-conducting layer. This arrangement helps to further improve the flexibility of the heating element.

[0023] In some embodiments of the first aspect, the cutout is a slit that extends along the arrangement direction of the first heating element area, the second heating element area, and the third heating element area. This arrangement reduces the impact of the cutout on heat conduction on the heating elements.

[0024] In some embodiments of the first aspect, the first heating element area is fixedly connected to the first housing, and the second heating element area is freely disposed between the second screen area and the second housing. This arrangement avoids damage to the heating element by pulling during the unfolding and folding of the foldable housing.

[0025] In some embodiments of the first aspect, the first housing includes a first middle frame and a first rear cover. A first screen area is disposed on one side of the first middle frame, and the first rear cover is disposed on the other side of the first middle frame. A first heating element area is disposed between the first screen area and the first middle frame. The first rear cover and the first middle frame form a first accommodating space. A power supply unit is disposed within the first accommodating space, and the power supply unit is electrically connected to the first heating element area via a flexible circuit board. This arrangement prevents relative movement of the flexible circuit board relative to the power supply unit, thereby ensuring stable transmission of electrical signals within the flexible circuit board.

[0026] In some embodiments of the first aspect, the control unit is configured to: control the foldable electronic device to issue a first prompt message when the first temperature value is less than a temperature threshold; and control the foldable electronic device to issue a second prompt message when the first temperature value is greater than or equal to the temperature threshold. This configuration allows for timely prompts to the user, reducing the likelihood of the user folding or unfolding the foldable electronic device in low-temperature environments, thereby further reducing damage to the first display screen.

[0027] In some embodiments of the first aspect, the control unit is used to control the first display screen to emit a first prompt message and a second prompt message. This configuration makes the first and second prompt messages easily identifiable by the user and less likely to be confused with other prompt messages from the foldable electronic device.

[0028] In some embodiments of the first aspect, the foldable electronic device further includes a second display screen; the first housing includes a first mid-frame, a first screen area is disposed on one side of the first mid-frame, and the second display screen is disposed on the other side of the first mid-frame; the second housing includes a second mid-frame and a second rear cover, the second screen area is disposed on one side of the second mid-frame, and the second rear cover is disposed on the other side of the second mid-frame; the control unit is configured to: when the first display screen is in an unfolded state, control the first display screen to emit a first prompt message and a second prompt message; when the first display screen is in a folded state, control the second display screen to emit the first prompt message and the second prompt message. This configuration ensures that the user receives the first and second prompt messages in a timely manner regardless of whether the foldable electronic device is in an unfolded or folded state, preventing the user from unfolding or folding the device when the first temperature value in the bending area is below a temperature threshold.

[0029] In some embodiments of the first aspect, the first prompt information includes: first interface text information indicating that the device should not be folded or unfolded, and / or, first interface color information indicating that the device should not be folded or unfolded. The second prompt information includes: second interface text information indicating that the device can be folded or unfolded, and / or, second interface color information indicating that the device can be folded or unfolded. This configuration can further improve the recognizability of the first and second prompt information and prevent users from confusing them with other prompt information of the foldable electronic device.

[0030] In some embodiments of the first aspect, a first circuit board is provided inside the first housing. The first circuit board includes a carrier substrate, and a control unit is located on the carrier substrate. The carrier substrate also has multiple temperature sensors, and the control unit is used to acquire a first temperature value based on the temperature values ​​detected by the multiple temperature sensors. This configuration allows for the acquisition of temperature values ​​from multiple locations, thereby enabling the control unit to obtain a more accurate first temperature value.

[0031] Secondly, embodiments of this application provide a control method for a foldable electronic device, wherein the foldable electronic device includes a foldable housing, a first display screen, and a heating unit; the first display screen is disposed on the foldable housing, the foldable housing is used to unfold and fold the first display screen, the foldable housing includes a first housing, a second housing, and a pivot mechanism disposed at the junction of the first housing and the second housing; the first display screen has a first screen area, a second screen area, and a bending area, the first screen area is disposed on the first housing, the second screen area is disposed on the second housing, and the bending area is disposed on the pivot mechanism; the heating unit is used to heat at least the bending area of ​​the first display screen; the control method for the foldable electronic device includes: acquiring a first temperature value of the bending area, and when the first temperature value is less than a temperature threshold, controlling the heating unit to heat at least the bending area.

[0032] The beneficial effects of the control method for the foldable electronic device in this application embodiment are the same as those of the foldable electronic device in the first aspect, and will not be repeated here.

[0033] In some embodiments of the second aspect, along the thickness direction of the first display screen, the first display screen includes a flexible panel and a touch layer disposed on the flexible panel; the heating unit is at least composed of the flexible panel; controlling the heating unit to heat at least the bending area includes: controlling the brightness of the flexible panel to increase to a first brightness value. This configuration eliminates the need for an additional heating unit, which helps reduce the cost of foldable electronic devices.

[0034] In some embodiments of the second aspect, the first brightness value is the maximum brightness value of the flexible panel. This setting allows the flexible panel to generate more heat, thereby improving the heating effect on the bending area.

[0035] In some embodiments of the second aspect, when a first temperature value is greater than or equal to a temperature threshold, the brightness of the flexible panel is controlled to decrease to a second brightness value; wherein the second brightness value is less than the first brightness value. This configuration helps to save power in foldable electronic devices.

[0036] In some embodiments of the second aspect, when the first temperature value is less than a temperature threshold, the foldable electronic device is controlled to issue a first prompt message; when the first temperature value is greater than or equal to the temperature threshold, the foldable electronic device is controlled to issue a second prompt message. This configuration allows for timely prompts to the user, reducing the likelihood of the user folding or unfolding the foldable electronic device in low-temperature environments, thereby further reducing damage to the first display screen.

[0037] In some embodiments of the second aspect, when the first temperature value is less than a temperature threshold, the first display screen is controlled to emit a first prompt message; when the first temperature value is greater than or equal to the temperature threshold, the first display screen is controlled to emit a second prompt message. This configuration makes the first and second prompt messages easily identifiable by the user and less likely to be confused with other prompt messages from the foldable electronic device.

[0038] In some embodiments of the second aspect, the foldable electronic device further includes a second display screen; the first housing includes a first middle frame, a first screen area is disposed on one side of the first middle frame, and the second display screen is disposed on the other side of the first middle frame; the second housing includes a second middle frame and a second rear cover, the second screen area is disposed on one side of the second middle frame, and the second rear cover is disposed on the other side of the second middle frame; the first display screen is located inside the foldable housing when in the folded state; when the first display screen is in the unfolded state, the first display screen is controlled to emit a first prompt message and a second prompt message; when the first display screen is in the folded state, the second display screen is controlled to emit a first prompt message and a second prompt message. With this configuration, regardless of whether the foldable electronic device is in the unfolded or folded state, the user can be guaranteed to receive the first and second prompt messages in a timely manner, preventing the user from performing unfolding or folding operations when the first temperature value in the bending area is lower than the temperature threshold.

[0039] Thirdly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a control unit, implements the control method for the foldable electronic device in the second aspect.

[0040] The beneficial effects of the computer-readable storage medium in the embodiments of this application are the same as those of the control method for the foldable electronic device in the second aspect, and will not be repeated here.

[0041] Fourthly, embodiments of this application provide a computer program product that, when run on a foldable electronic device, causes the foldable electronic device to execute the control method for the foldable electronic device as described in the second aspect.

[0042] The beneficial effects of the computer program product in this application embodiment are the same as those of the control method for the foldable electronic device in the second aspect, and will not be repeated here.

[0043] Fifthly, embodiments of this application provide a chip system including a control unit, the control unit including a processor and a memory, the processor executing a computer program stored in the memory to implement the control method for the foldable electronic device as described in the second aspect.

[0044] The beneficial effects of the chip system in this application embodiment are the same as those of the control method for the foldable electronic device in the second aspect, and will not be repeated here. Attached Figure Description

[0045] Figure 1 is a schematic diagram of the structure of the foldable electronic device (mobile phone) in the first embodiment of this application;

[0046] Figure 2 is a cross-sectional view (AA) of the foldable electronic device in Figure 1;

[0047] Figure 3 is a simplified structural diagram of the foldable electronic device in the unfolded state according to the first embodiment of this application;

[0048] Figure 4 is a simplified structural diagram of the foldable electronic device in the folded state according to the first embodiment of this application;

[0049] Figure 5a is a schematic diagram of the arrangement of components on the first circuit board in Figure 3;

[0050] Figure 5b is a schematic diagram of the connection relationship of the components on the first circuit board in Figure 3;

[0051] Figure 6a is an exploded view of the foldable electronic device in Figure 1 from one perspective;

[0052] Figure 6b is an exploded view of the foldable electronic device in Figure 1 from another perspective;

[0053] Figure 7 is a schematic diagram of the foldable electronic device in Figure 1 after the first display screen has been removed;

[0054] Figure 8 is a partial enlarged view of the foldable electronic device in Figure 2 at point A;

[0055] Figure 9 is a schematic diagram of the structure of the heating element shown in Figure 7;

[0056] Figure 10 is an exploded view of the heating element shown in Figure 9;

[0057] Figure 11 is a BB cross-sectional view of the heating element shown in Figure 9;

[0058] Figure 12 is a front view of the foldable electronic device (mobile phone) in the second embodiment of this application;

[0059] Figure 13 is a CC cross-sectional view of the foldable electronic device in Figure 12;

[0060] Figure 14 is a schematic diagram of the heating wiring arrangement in the heating unit in some embodiments of this application;

[0061] Figure 15 is a schematic diagram of the heating wiring arrangement in the heating unit in some other embodiments of this application;

[0062] Figure 16 is a schematic diagram of the structure of the first display screen of the foldable electronic device (mobile phone) in the third embodiment of this application;

[0063] Figure 17 is a schematic diagram of the adjustment of the working state of the heating unit shown in Figure 16;

[0064] Figure 18 is a schematic diagram of a foldable electronic device issuing a prompt message in some embodiments of this application;

[0065] Figure 19 is a flowchart of a control method for a foldable electronic device in some embodiments of this application;

[0066] Figure 20 is a schematic diagram of the foldable electronic device in the unfolded state according to the fourth embodiment of this application;

[0067] Figure 21 is a schematic diagram of the foldable electronic device shown in Figure 20 in a folded state;

[0068] Figure 22 is a flowchart of a control method for a foldable electronic device in some other embodiments of this application. Detailed Implementation

[0069] The technical solutions in some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0070] With the development of electronic technology, smartphones, tablets, and other electronic devices have gradually become essential tools for communication, entertainment, and learning. To achieve better visual effects, the screen sizes of electronic devices are getting larger and larger. However, as the screen sizes continue to increase, carrying them becomes very inconvenient. Therefore, foldable electronic devices, such as foldable phones and foldable tablets, have emerged. Their main feature is that they can be folded. Foldable electronic devices can provide a larger display area when unfolded, while maintaining portability when folded, thus becoming increasingly popular among users.

[0071] The display screen is one of the main components of foldable electronic devices. This display uses flexible screen technology, allowing it to be bent for easy folding. Bending capability is a crucial indicator of a display screen's performance. The bending capability of a display screen is related to temperature. At room temperature, the display material has good flexibility and can be bent repeatedly without damage. However, in low-temperature environments (such as -20°C), the display material becomes more rigid. For example, the modulus of the adhesive layers between the display layers increases and the elasticity decreases at low temperatures, making the adhesive layers harder and reducing the display's bending capability. Folding or unfolding the display in such conditions can damage it. Therefore, ensuring the safe use of foldable electronic devices in low-temperature environments has become a significant challenge in the industry.

[0072] To ensure the safe use of foldable electronic devices in low-temperature environments, a type of foldable electronic device in related technologies usually includes a warning "Do not fold in low temperatures" in its product packaging or user manual. However, users rarely notice this warning and are prone to folding or unfolding the device in low-temperature environments, which can damage the display screen.

[0073] Therefore, this application provides a foldable electronic device and its control method. By setting a heating unit in the foldable electronic device that can heat the display screen, the heating unit can heat the display screen at low temperatures to ensure the flexibility of the display screen, thereby reducing the damage to the display screen caused by folding or unfolding operations in low-temperature environments.

[0074] The foldable electronic device in this application embodiment can be a mobile phone, tablet computer, wearable device, or other electronic device. The specific structure of the foldable electronic device is described below using a mobile phone as an example. Other types of foldable electronic devices can be set up with reference to the structure in the mobile phone embodiment, and will not be described in detail here.

[0075] Figure 1 is a structural schematic diagram of the foldable electronic device (mobile phone) in the first embodiment of this application. Figure 2 is a cross-sectional view of the foldable electronic device in Figure 1 (AA section). The back cover of the foldable electronic device is not shown in the cross-sectional view. Figure 3 is a simplified structural diagram of the foldable electronic device in the first embodiment of this application in the unfolded state. Figure 4 is a simplified structural diagram of the foldable electronic device in the first embodiment of this application in the folded state.

[0076] As shown in Figures 1 to 4, the foldable electronic device includes a foldable housing 100, a first display screen 200, a heating unit 300, and a control unit 400.

[0077] The first display screen 200 is disposed on the foldable housing 100. The foldable housing 100 is used to unfold and fold the first display screen 200. The foldable housing 100 includes a first housing 110, a second housing 120, and a pivot mechanism 130 disposed at the junction of the first housing 110 and the second housing 120. The first display screen 200 itself is bendable and can be bent and deformed under external force. The first display screen 200 includes a first screen area 201, a second screen area 202, and a bending area 203. The first screen area 201 is disposed on the first housing 110, the second screen area 202 is disposed on the second housing 120, and the bending area 203 is disposed on the pivot mechanism 130.

[0078] As shown in Figures 3 and 4, the first housing 110 includes a first middle frame 111 and a first rear cover 114. The first screen area 201 is disposed on one side of the first middle frame 111, and the first rear cover 114 is disposed on the other side of the first middle frame 111. The first rear cover 114 and the first middle frame 111 form a first accommodating space 115. Specifically, the first middle frame 111 includes a first middle frame bottom wall 112 and a first middle frame side wall 113 disposed at the edge of the first middle frame bottom wall 112. The first rear cover 114, the first middle frame bottom wall 112, and the first middle frame side wall 113 form the first accommodating space 115.

[0079] The second housing 120 includes a second middle frame 121 and a second rear cover 124. The second screen area 202 is disposed on one side of the second middle frame 121, and the second rear cover 124 is disposed on the other side of the second middle frame 121. The second rear cover 124 and the second middle frame 121 form a second accommodating space 125. Specifically, the second middle frame 121 includes a second middle frame bottom wall 122 and a second middle frame side wall 123 disposed at the edge of the second middle frame bottom wall 122. The second rear cover 124, the second middle frame bottom wall 122, and the second middle frame side wall 123 form the second accommodating space 125. The first accommodating space 115 and the second accommodating space 125 are used to house components such as circuit boards and batteries.

[0080] The first housing 110 and the second housing 120 can switch between a folded state (as shown in Figure 4) and an unfolded state (as shown in Figure 3). As shown in Figures 1 and 3, when the first housing 110 and the second housing 120 are in the unfolded state, the first display screen 200 is also in the unfolded state, and the display area of ​​the first display screen 200 is exposed to display image information to the user. As shown in Figure 4, when the first housing 110 and the second housing 120 are in the folded state, the first housing 110 and the second housing 120 are stacked on top of each other, and the first display screen 200 is in the folded state. At this time, the first display screen 200 is folded between the first housing 110 and the second housing 120, that is, the first display screen 200 is located inside the foldable housing 100, which facilitates the carrying of the foldable electronic device.

[0081] Specifically, the stacking of the first shell 110 and the second shell 120 means that the thickness directions of the bottom wall 112 of the first middle frame and the bottom wall 122 of the second middle frame are parallel or approximately parallel (for example, the deviation is within 10°).

[0082] As shown in Figures 2 and 3, the first housing 110 and the second housing 120 are provided with a first shielding wall 116 and a second shielding wall 126 at their joint. The first shielding wall 116 is connected to the end of the first middle frame side wall 113 away from the first display screen 200 (the lower end of the first middle frame side wall 113 shown in Figure 3), and the second shielding wall 126 is connected to the end of the second middle frame side wall 123 away from the first display screen 200 (the lower end of the second middle frame side wall 123 shown in Figure 3). As shown in Figures 2 and 3, when the first housing 110 and the second housing 120 are in the unfolded state, the pivot mechanism 130 is located between the first middle frame 111 and the second middle frame 121. The pivot mechanism 130 is then shielded by the first shielding wall 116 and the second shielding wall 126, and the pivot mechanism 130 is not visible from the back of the foldable electronic device, thus ensuring the appearance of the joint between the first housing 110 and the second housing 120 when the foldable electronic device is in the unfolded state.

[0083] As shown in Figures 3 and 4, when the first housing 110 and the second housing 120 move from the unfolded state to the folded state, the first shielding wall 116 and the second shielding wall 126 gradually open, and the pivot mechanism 130 gradually emerges from between the first middle frame 111 and the second middle frame 121. As shown in Figure 4, when the first housing 110 and the second housing 120 are in the folded state, the shaft cover (the outer appearance part) of the pivot mechanism 130 is located in the gap formed by the first shielding wall 116 and the second shielding wall 126, and covers the gap, preventing the moving parts of the pivot mechanism 130 inside the gap from being seen from the outside, thereby ensuring the appearance of the joint between the first housing 110 and the second housing 120 when the foldable electronic device is in the folded state.

[0084] Of course, the structures of the first housing 110 and the second housing 120 are not limited to the structures shown above, and other structures can be adopted according to the actual situation.

[0085] As shown in Figures 2 and 3, the heating unit 300 is used to heat at least the bending area 203 of the first display screen 200. The control unit 400 is used to: acquire a first temperature value of the bending area 203; and, if the first temperature value is less than a temperature threshold, control the heating unit 300 to heat at least the bending area 203.

[0086] In this embodiment of the foldable electronic device, by setting a heating unit 300, when the foldable electronic device is in a low-temperature environment, if the first temperature value of the bending area 203 is less than the temperature threshold, the control unit 400 can control the heating unit 300 to heat the bending area 203 of the first display screen 200, so as to raise the temperature of the bending area 203 and improve the bending performance of the bending area 203 of the first display screen 200, thereby reducing the damage to the first display screen 200 when the user performs folding and unfolding operations.

[0087] In some embodiments, the control unit 400 is configured to: control the heating unit 300 to stop heating the bending area 203 when the first temperature value is greater than or equal to the temperature threshold.

[0088] The control of the heating unit 300 to stop heating the bending area 203 can be achieved by controlling the heating unit 300 to stop working or by controlling the heating unit 300 to enter a low-power state. When the heating unit 300 is in the low-power state, the heat generated is less than or equal to the heat dissipated by the first display screen 200. That is, the heat generated by the heating unit 300 when it is in the low-power state is insufficient to raise the temperature of the bending area 203.

[0089] For example, assuming a temperature threshold of -21℃, when the first temperature value of the bending area 203 is -30℃, the first temperature value is less than the temperature threshold, and the control unit 400 controls the heating unit 300 to heat at least the bending area 203. When the first temperature value of the bending area 203 is -18℃, the first temperature value is greater than the temperature threshold, and the control unit 400 controls the heating unit 300 to stop heating the bending area 203.

[0090] The location of the control unit 400 is not unique. In some embodiments, the control unit 400 is disposed within the first housing 110, as shown in Figures 3 and 5a. Figure 5a is a schematic diagram of the arrangement of devices on the first circuit board 500 in Figure 3. The first accommodating space 115 contains the first circuit board 500, which includes a carrier substrate 510. The control unit 400 is disposed on the carrier substrate 510. As shown in Figures 3, 4, and 5a, the control unit 400 can be a System on Chip (SOC), but it is not limited to this. The control unit 400 can also be a CPU (Central Processing Unit), MCU (Microcontroller Unit), ASIC (Application-Specific Integrated Circuit), etc.

[0091] Of course, the control unit 400 is not limited to being located in the first housing 110. The control unit 400 can also be located in the second housing 120. Specifically, the second accommodating space 125 is provided with a second circuit board 900, and the control unit 400 is located on the carrier substrate of the second circuit board 900.

[0092] In some embodiments, as shown in Figures 5a and 5b, Figure 5b is a schematic diagram of the connection relationship of the devices on the first circuit board 500 in Figure 3. A temperature sensor 600 may be provided inside the foldable housing 100. The temperature sensor 600 may be connected to the control unit 400, and the control unit 400 may be used to obtain a first temperature value based on the temperature value detected by the temperature sensor 600.

[0093] The temperature sensor 600 can be a negative temperature coefficient (NTC) thermistor. However, it is not limited to this; in addition to being a negative temperature coefficient thermistor, the temperature sensor 600 can also be a positive temperature coefficient (PTC) thermistor, thermocouple, etc.

[0094] In some embodiments, the temperature sensor 600 may be disposed in the first housing 110. Specifically, as shown in FIG3 and FIG5a, the temperature sensor 600 may be disposed on the carrier substrate 510 of the first circuit board 500. The temperature sensor 600 may detect the temperature value in the second accommodating space 125. The control unit 400 may indirectly obtain the first temperature value of the bending region 203 based on the temperature value in the second accommodating space 125 and the relationship between the temperature value in the second accommodating space 125 and the first temperature value of the bending region 203.

[0095] In some embodiments, the number of temperature sensors 600 is multiple, and the multiple temperature sensors 600 can be disposed on the support substrate 510. The control unit 400 obtains a first temperature value based on the temperature values ​​detected by the multiple temperature sensors 600 respectively. By setting multiple temperature sensors 600, temperature values ​​at multiple locations can be obtained, thereby enabling the control unit 400 to obtain a more accurate first temperature value based on the temperature values ​​at multiple locations.

[0096] In some embodiments, as shown in Figures 3 and 5a, a plurality of temperature sensors 600 are disposed on one edge of the support substrate 510 near the rotating shaft mechanism 130. However, this is not a limitation, and the plurality of temperature sensors 600 may also be disposed at other locations on the support substrate 510.

[0097] As shown in Figure 5a, the number of temperature sensors 600 can be four, but it is not limited to this. The number of temperature sensors 600 can also be two, three, five, etc.

[0098] Of course, the temperature sensor 600 is not limited to being installed in the first housing 110. The temperature sensor 600 can also be installed in other locations according to the actual situation. For example, the temperature sensor 600 can be installed in a location that is in direct contact with the bending area 203. In this way, the control unit 400 can directly obtain the first temperature value based on the data detected by the temperature sensor 600.

[0099] In some embodiments, as shown in Figures 5a and 5b, a driving unit 700 is further provided on the support substrate 510. The driving unit 700 is connected to both the control unit 400 and the heating unit 300. The control unit 400 is used to send a heating signal to the driving unit 700 when the first temperature value is less than a temperature threshold. After receiving the heating signal, the driving unit 700 is used to drive the heating unit 300 to heat at least the bending area 203.

[0100] As shown in Figure 5a, the driving unit 700 can be a driver IC, such as a power management chip.

[0101] The location of the heating unit 300 is not unique. The heating unit 300 can be located on the back side of the first display screen 200 or between the film layers within the first display screen 200. Figures 2 to 8 show an embodiment in which the heating unit 300 is located on the back side of the first display screen 200. Figure 6a is an exploded view of the foldable electronic device in Figure 1 from one perspective, Figure 6b is an exploded view of the foldable electronic device in Figure 1 from another perspective, Figure 7 is a structural schematic diagram of the foldable electronic device in Figure 1 after the first display screen 200 is removed, and Figure 8 is a partial enlarged view of the foldable electronic device in Figure 2 at point A.

[0102] In this embodiment, as shown in Figures 6a, 6b and 7, the heating unit 300 may include a bendable heating element 310, which is disposed between the first display screen 200 and the foldable housing 100. The heating element 310 has a first heating element area 311, a second heating element area 312 and a third heating element area 313. The first heating element area 311 is disposed on the first housing 110, the second heating element area 312 is disposed on the second housing 120, and the third heating element area 313 is disposed on the rotating shaft mechanism 130.

[0103] By making the heating element 310 bendable, as shown in Figures 3 and 4, the heating element 310 can bend along with the folding of the first display screen 200. When the first display screen 200 is in a folded state, the first heating element area 311, the second heating element area 312, and the third heating element area 313 of the heating element 310 can wrap around the bending area 203, which helps to increase the heat transfer area between the heating element 310 and the bending area 203 of the first display screen 200, thereby improving the heating effect of the heating element 310 on the bending area 203. In addition, by setting the first heating element 311 on the first housing 110, the second heating element 312 on the second housing 120, and the third heating element 313 on the rotating shaft mechanism 130, a heat conduction channel can be formed between the first housing 110 and the second housing 120. When the foldable electronic device is working at room temperature, as shown in Figure 7, the heating element 310 can conduct heat from the one with a higher temperature between the first housing 110 and the second housing 120 to the other, which is beneficial to the heat dissipation of electronic components in the first housing 110 and the second housing 120.

[0104] The heating element 310 can be in direct contact with the first display screen 200 or indirect contact. For example, a thermally conductive material layer, such as a thermally conductive adhesive layer, is provided between the heating element 310 and the first display screen 200.

[0105] The structure of the heating element 310 is not unique. In some embodiments, the heating element 310 can be configured as a multi-layer structure, as shown in Figures 9, 10, and 11. Figure 9 is a schematic diagram of the structure of the heating element 310 shown in Figure 7, Figure 10 is an exploded view of the heating element 310 shown in Figure 9, and Figure 11 is a BB cross-sectional view of the heating element 310 shown in Figure 9. Along the thickness direction Z of the heating element 310, the heating element 310 may further include a first thermally conductive layer 314 and a second thermally conductive layer 315 stacked together. The first thermally conductive layer 314 is a metal layer or an alloy layer, and the second thermally conductive layer 315 is a graphite layer.

[0106] The heating element 310 is configured with a first heat-conducting layer 314 and a second heat-conducting layer 315 stacked together. This increases the heat diffusion path, allowing heat to diffuse along both the first and second heat-conducting layers 314 and 315, thus facilitating heat diffusion throughout the entire heating element 310 and ensuring uniform heat distribution. Furthermore, the first heat-conducting layer 314 is made of metal or alloy, and the second heat-conducting layer 315 is made of graphite. This increases the overall specific heat capacity of the heating element 310 (due to the high specific heat capacity of graphite sheets, which, combined with metal sheets, increases the overall heat capacity of the heating element 310). After the heating element 310 is turned off, heat loss is reduced, allowing it to continuously heat the bending area 203 even at low temperatures, ensuring that the temperature of the bending area 203 remains above the temperature threshold.

[0107] As shown in Figure 10, the first thermally conductive layer 314 can be a steel sheet layer, but it is not limited to this. The first thermally conductive layer 314 can also be an aluminum alloy layer, a copper layer, etc.

[0108] In some embodiments, as shown in Figures 8, 10, and 11, the first thermally conductive layer 314 is disposed on the side of the second thermally conductive layer 315 near the first display screen 200. Since the specific heat of the first thermally conductive layer 314 is relatively smaller than that of the second thermally conductive layer 315, the first thermally conductive layer 314 heats up relatively quickly. By placing the first thermally conductive layer 314 (a metal layer or alloy layer) close to the first display screen 200, the heating effect of the heating element 310 on the bending area 203 can be improved.

[0109] In some embodiments, as shown in Figures 9, 10, and 11, the thickness of the first thermally conductive layer 314 is less than the thickness of the second thermally conductive layer 315. Since the hardness of the first thermally conductive layer 314 (metal or alloy layer) is generally greater than that of the second thermally conductive layer 315 (graphite layer), making the thickness of the first thermally conductive layer 314 thinner improves the flexibility of the heating element 310, making the heating element 310 easier to bend, and thus making the foldable electronic device easier to fold.

[0110] In some embodiments, as shown in Figures 9 and 10, a cutout portion 3141 is provided on the first heat-conducting layer 314. The cutout portion 3141 is at least partially located in the third heating element region 313 and penetrates through the first heat-conducting layer 314. By providing a cutout portion 3141 penetrating the first heat-conducting layer 314 in the third heating element region 313, the cutout portion 3141 can reduce the strength of the first heat-conducting layer 314 in the third heating element region 313, which is beneficial to further improve the bendability of the heating element 310, thereby making the heating element 310 easier to bend, and thus making the foldable electronic device easier to fold.

[0111] When the foldable electronic device operates at room temperature, the one with a higher temperature between the first housing 110 and the second housing 120 can transfer heat to the other through the heating element 310 to achieve heat dissipation. To make the heat transfer on the heating element 310 smoother, in some embodiments, as shown in Figures 9 and 10, the cutout portion 3141 is a slit. The slit extends along the arrangement direction Y of the first heating element area 311, the second heating element area 312, and the third heating element area 313, that is, the extension direction of the slit is parallel to the aforementioned arrangement direction Y. With this configuration, the extension direction of the cutout portion 3141 is consistent with the direction of heat conduction on the heating element 310, reducing the influence of the cutout portion 3141 on the heat conduction on the heating element 310, thereby ensuring smoother and more efficient heat conduction on the heating element 310.

[0112] As shown in Figure 7, when the first housing 110 and the second housing 120 are in the unfolded state, the aforementioned arrangement direction Y, the thickness direction Z of the heating element 310, and the width direction X of the heating element 310 are all perpendicular to each other, and the width direction X of the heating element 310 is parallel to the length direction of the rotating shaft mechanism 130; the extension direction of the slot is parallel to the aforementioned arrangement direction Y, which can be absolutely parallel or approximately parallel, for example, with a deviation within 3°. The cutout portion 3141 can be a slot or a hole, depending on the actual situation.

[0113] In some embodiments, as shown in Figures 10 and 11, a first adhesive layer 317 is provided between the first thermally conductive layer 314 and the second thermally conductive layer 315. This arrangement allows the first thermally conductive layer 314 and the second thermally conductive layer 315 to be firmly bonded together. The first adhesive layer 317 may be an adhesive layer.

[0114] In addition to being configured as a multi-layer structure, in some embodiments, the heating element 310 can also be configured as a single-layer structure, such as a single-layer metal layer structure or a single-layer alloy layer structure.

[0115] The connection between the heating element 310 and the foldable housing 100 is not unique. In some embodiments, as shown in Figures 6b, 7, and 8, the first heating element area 311 is fixedly connected to the first housing 110, and the second heating element area 312 is freely disposed between the second screen area 202 and the second housing 120. By freely disposing the second heating element area 312 between the second screen area 202 and the second housing 120, the second heating element area 312 can move relative to the second housing 120 during the unfolding and folding of the first housing 110 and the second housing 120, thereby preventing the foldable housing 100 from pulling and damaging the heating element 310 during unfolding and folding.

[0116] Specifically, the second heating element 312 being freely disposed between the second screen area 202 and the second housing 120 means that the degree of freedom of the second heating element 312 is not constrained in the direction perpendicular to the thickness of the second heating element 312.

[0117] The first heating element 311 can be fixed to the first housing 110 by adhesive bonding. Specifically, as shown in Figures 8, 9, and 10, a second adhesive layer 318 is provided between the first heating element 311 and the first housing 110. The second adhesive layer 318 can be an adhesive layer. In addition to adhesive bonding, the first heating element 311 can also be fixedly connected to the first housing 110 by fasteners (such as screws).

[0118] In addition to the connection methods described above, the heating element 310 and the foldable housing 100 can also be connected as follows: the first heating element area 311 is freely disposed between the first screen area 201 and the first housing 110, the second heating element area 312 is freely disposed between the second screen area 202 and the second housing 120, and the third heating element area 313 is fixedly connected to the support surface of the rotating shaft mechanism 130, for example, by bonding.

[0119] In some embodiments, as shown in Figures 2, 6b, and 8, a power supply unit (e.g., indicated by reference numeral 500 in Figure 8) is provided in the first accommodating space 115. The power supply unit is electrically connected to the first heating element 311 via a flexible circuit board 316. Since the first heating element 311 is fixedly connected to the first housing 110, by placing the power supply unit in the first accommodating space 115, the relative position between the power supply unit and the first heating element 311 can be fixed, preventing relative movement of the flexible circuit board 316 relative to the power supply unit, thereby ensuring stable transmission of electrical signals in the flexible circuit board 316.

[0120] In some embodiments, as shown in FIG6b, FIG7 and FIG8, the power supply unit is a first circuit board 500 disposed in the first accommodating space 115. The first end of the flexible circuit board 316 is welded to the first heating plate area 311, and the second end of the flexible circuit board 316 extends into the first accommodating space 115 and is fixed on the bottom wall 112 of the first middle frame. The power supply unit is electrically connected to the second end of the flexible circuit board 316 through the conductive spring piece 520.

[0121] Of course, the power supply unit is not limited to the first circuit board 500. In other embodiments, the power supply unit may also be a battery.

[0122] Figures 12 to 15 illustrate an embodiment in which the heating unit 300 is disposed between film layers within the first display screen 200. Figure 12 is a front view of the foldable electronic device (mobile phone) in the second embodiment of this application, Figure 13 is a CC cross-sectional view of the foldable electronic device in Figure 12, Figure 14 is a schematic diagram of the heating wiring arrangement in the heating unit 300 in some embodiments of this application, and Figure 15 is a schematic diagram of the heating wiring arrangement in the heating unit 300 in other embodiments of this application.

[0123] As shown in Figures 12 and 13, in this embodiment, along the thickness direction Z of the first display screen 200, the first display screen 200 includes a support layer 210, a flexible panel 220 disposed on the support layer 210, and a touch layer 230 disposed on the flexible panel 220. The heating unit 300 is disposed between the touch layer 230 and the support layer 210. By disposing the heating unit 300 between the touch layer 230 and the support layer 210, that is, integrating the heating unit 300 with the first display screen 200, the structure between the foldable housing 100 and the first display screen 200 becomes more compact, which helps to reduce the number of components in the foldable electronic device, thereby facilitating the assembly of the foldable electronic device.

[0124] As shown in Figure 13, the flexible panel 220 can be an OLED (Organic Light-Emitting Diode) display panel; however, it is not limited to this, and can also be other types of display panels, such as E-ink (Electronic Ink) display panels. The support layer 210 mainly provides support for the flexible panel 220 to increase its strength and stability. The material of the support layer 210 can be polyimide (PI) or polycarbonate (PC), etc., which have good mechanical properties and high-temperature resistance, and can effectively protect the flexible panel 220 and maintain its shape stability.

[0125] In some embodiments, as shown in FIG13, along the thickness direction Z of the first display screen 200, the first display screen 200 further includes a polarizer 240 disposed on the touch layer 230 and a protective layer 250 disposed on the polarizer 240. In the first display screen 200, an adhesive layer 260 is provided between adjacent pairs of the support layer 210, heating unit 300, flexible panel 220, touch layer 230, polarizer 240 and protective layer 250.

[0126] The polarizer 240 primarily functions to prevent reflection of light from outside the first display screen 200, thereby enhancing the visibility of the first display screen 200. The protective layer 250 mainly protects the inner film layer, preventing damage to it.

[0127] In some embodiments, as shown in Figures 12 and 13, the heating unit 300 includes a heating wiring layer 320, which is disposed between the support layer 210 and the flexible panel 220, and at least partially located in the bending region 203. By setting the heating unit 300 as a heating wiring layer 320, the structure of the heating unit 300 is simplified and the space occupied is reduced. By disposing the heating wiring layer 320 between the support layer 210 and the flexible panel 220, that is, by disposing the heating wiring layer 320 on the back side of the flexible panel 220, the influence of the heating wiring layer 320 on the light emission of the flexible panel 220 is reduced, thereby ensuring the display effect of the flexible panel 220.

[0128] In some embodiments, as shown in Figures 13 and 14, the heating trace layer 320 includes a carrier layer 321 and heating traces 322 disposed on the carrier layer 321. The heating traces 322 are serpentine. By setting the heating traces 322 as serpentine, it is beneficial to increase the heating area of ​​the heating traces 322, thereby improving the heating effect of the heating traces 322 on the bending area 203.

[0129] The heating trace 322 is electrically connected to the drive unit 700, and the drive unit 700 is electrically connected to the control unit 400. The drive unit 700 includes a heating control circuit, which is connected to the heating trace 322 to drive the heating trace 322 to heat the bending area 203. The drive unit 700 can be a display driver chip of the first display screen 200.

[0130] The shape of the serpentine line is not unique. In some embodiments, as shown in FIG13, the serpentine line can be a trace that meanders along the width direction Y of the bending area 203. In other embodiments, as shown in FIG14, the serpentine line can also be a trace that meanders along the length direction X of the bending area 203.

[0131] In some embodiments, as shown in FIG13, the heating trace 322 is an ITO (Indium Tin Oxide) trace. By setting the heating trace 322 as an ITO trace, on the one hand, ITO traces can be formed by etching processes, which is easy to manufacture and has advantages in mass production; on the other hand, ITO traces are transparent traces, which reduces the impact on the display effect of the first display screen 200.

[0132] In some embodiments, as shown in FIG13, the heating trace layer 320 may further include a trace insulation layer 323 covering the heating trace 322. By providing the trace insulation layer 323, the heating trace 322 can be separated from other film layers in the first display screen 200, thereby preventing short circuits.

[0133] In some embodiments, the heating unit 300 may further include a plurality of heating wiring layers 320, which are stacked together. By providing a plurality of heating wiring layers 320, the power of the heating unit 300 can be increased, thereby improving the heating effect of the heating unit 300 on the bending area 203.

[0134] The number of heated wiring layers 320 can be two, three or more, and there is no specific limitation here.

[0135] Figures 16 and 17 show another embodiment in which the heating unit 300 is disposed between the film layers within the first display screen 200. Figure 16 is a structural schematic diagram of the first display screen 200 of the foldable electronic device (mobile phone) in the third embodiment of this application, and Figure 17 is a schematic diagram of the adjustment of the working state of the heating unit 300 shown in Figure 16.

[0136] As shown in Figure 16, along the thickness direction Z of the first display screen 200, the first display screen 200 includes a support layer 210, a flexible panel 220 disposed on the support layer 210, and a touch layer 230 disposed on the flexible panel 220. The heating unit 300 is composed of at least the flexible panel 220. The control unit 400 is used to control the brightness of the flexible panel 220 to increase to the first brightness value when the first temperature value is less than the temperature threshold, as shown in Figure 17(a).

[0137] By setting the flexible panel 220 as the heating unit 300 and generating more heat by increasing the brightness of the flexible panel 220 to heat the bending area 203, there is no need to add an additional heating unit 300, which reduces the number of components in the foldable electronic device and helps to reduce the cost of the foldable electronic device.

[0138] In some embodiments, as shown in FIG17(a), the first brightness value can be the maximum brightness value of the flexible panel 220. This setting allows the flexible panel 220 to generate more heat, thereby improving the heating effect on the bending area 203.

[0139] Of course, it is not limited to this. The first brightness value can also be 90% or 80% of the maximum brightness value of the flexible panel 220, etc., and can be set according to the actual situation.

[0140] In some embodiments, the control unit 400 is configured to: when a first temperature value is greater than or equal to a temperature threshold, as shown in FIG17(b), control the brightness of the flexible panel 220 to decrease to a second brightness value; wherein the second brightness value is less than the first brightness value.

[0141] When the first temperature value is greater than or equal to the temperature threshold, the control unit 400 reduces the brightness of the flexible panel 220 to a second brightness value. This avoids the flexible panel 220 from consuming too much power while in a high-brightness state for a long time, thereby saving power for the foldable electronic device and improving its battery life.

[0142] As shown in Figure 17(b), the second brightness value can be 50% of the maximum brightness value of the flexible panel 220, but it is not limited to this. The second brightness value can also be 30%, 40%, 60% of the maximum brightness value of the flexible panel 220, etc., depending on the intensity value of the ambient light around the first display screen 200.

[0143] In some embodiments, as shown in FIG16, along the thickness direction Z of the first display screen 200, the first display screen 200 further includes a polarizer 240 disposed on the touch layer 230 and a protective layer 250 disposed on the polarizer 240. In the first display screen 200, an adhesive layer 260 is provided between adjacent pairs of the support layer 210, flexible panel 220, touch layer 230, polarizer 240 and protective layer 250.

[0144] Figure 18 is a schematic diagram of a foldable electronic device issuing a prompt message in some embodiments of this application. In some embodiments, the control unit 400 is used to: control the foldable electronic device to issue a first prompt message when the first temperature value is less than a temperature threshold, as shown in Figure 18(a). By controlling the foldable electronic device to issue a first prompt message when the first temperature value is less than the temperature threshold, a low-temperature warning can be promptly given to the user, reducing the user's folding or unfolding operation of the foldable electronic device in low-temperature environments, thereby further reducing damage to the first display screen 200.

[0145] In some embodiments, the control unit 400 is configured to: when a first temperature value is greater than or equal to a temperature threshold, as shown in FIG18(b), control the foldable electronic device to issue a second prompt message. By controlling the foldable electronic device to issue a second prompt message when the first temperature value is greater than or equal to the temperature threshold, the user can be promptly warned and alerted, thereby reducing the impact on the user's use of the foldable electronic device.

[0146] In some embodiments, as shown in FIG18, the control unit 400 is used to control the first display screen 200 to emit a first prompt message and a second prompt message. Emitting the first and second prompt messages through the first display screen 200 makes them easily identifiable by the user and less likely to be confused with other prompt messages from the foldable electronic device.

[0147] In some embodiments, the first prompt information includes: first interface text information for prompting users not to fold or unfold the device. For example, as shown in Figure 18(a), the first interface text information could be "The temperature is too low, please do not fold or unfold!". By setting the first prompt information as first interface text information, the recognizability of the first prompt information can be further improved, avoiding confusion between the user and other prompt information of the foldable electronic device.

[0148] In some embodiments, the first prompt information includes: first interface color information for prompting users not to fold and unfold the device, such as the first interface color information being blue for the display screen 200. By setting the first prompt information to the first interface color information, the recognizability of the first prompt information can be further improved, avoiding confusion between the user and other prompt information of the foldable electronic device.

[0149] The first prompt information may consist only of text information on the first interface, or only of color information on the first interface, or may include both text information and color information on the first interface.

[0150] In some embodiments, the second prompt message includes: second interface text information indicating that the folding and unfolding operation is possible, such as shown in Figure 18(b), where the second interface text information could be "Low temperature warning lifted, folding and unfolding operation is possible!". By setting the second prompt message as second interface text information, the recognizability of the second prompt message can be further improved, avoiding confusion between the user and other prompt messages of the foldable electronic device.

[0151] In some embodiments, the second prompt information includes: second interface color information for indicating that the device can be folded and unfolded, such as the second interface color information being red on the display screen 200. By setting the second prompt information to the second interface color information, the recognizability of the second prompt information can be further improved, avoiding confusion between the user and other prompt information of the foldable electronic device.

[0152] The second prompt information may consist only of text information on the second interface, or only of color information on the second interface, or may include both text information and color information on the second interface.

[0153] Of course, in addition to the interface color information and interface text information mentioned above, the first prompt information and the second prompt information can also be sound information. The control unit 400 is used to control the speaker of the foldable electronic device to emit the first prompt information and the second prompt information; the first prompt information and the second prompt information can also be vibration information. The control unit 400 is used to control the vibration motor of the foldable electronic device to emit the first prompt information and the second prompt information.

[0154] Figure 20 is a structural schematic diagram of the foldable electronic device in the unfolded state according to the fourth embodiment of this application, and Figure 21 is a structural schematic diagram of the foldable electronic device shown in Figure 20 in the folded state. The main difference between the foldable electronic devices shown in Figures 20 and 21 and the foldable electronic devices shown in Figures 3 and 4 is that the first housing 110 of the foldable electronic device shown in Figures 20 and 21 omits the first back cover 114, and a second display screen 800 is added to the first housing 110, as described below:

[0155] As shown in Figures 20 and 21, the foldable electronic device also includes a second display screen 800. The first housing 110 includes a first middle frame 111 and a first back cover 114. The first screen area 201 is disposed on one side of the first middle frame 111, and the second display screen 800 is disposed on the other side of the first middle frame 111. The second display screen 800 and the first middle frame 111 form a first accommodating space 115. A support wall 117 is provided in the first accommodating space 115 for supporting the second display screen 800.

[0156] The second housing 120 includes a second middle frame 121 and a second rear cover 124. The second screen area 202 is disposed on one side of the second middle frame 121, and the second rear cover 124 is disposed on the other side of the second middle frame 121. The second rear cover 124 and the second middle frame 121 form a second accommodating space 125.

[0157] The second display screen 800 can be a flexible screen (such as an OLED display) or a rigid screen (such as an LCD display), without any specific limitation.

[0158] When a user needs to use a larger display area, such as when watching a movie, as shown in Figure 20, the foldable housing 100 can be switched to the unfolded state. In this state, the first display screen 200 (the inner screen) is unfolded. Because the display area of ​​the first display screen 200 is larger, the user can obtain a better visual experience. When the user takes this foldable electronic device out, as shown in Figure 21, the foldable housing 100 can be switched to the folded state. In this state, the foldable electronic device occupies less space, making it convenient to carry. Simultaneously, the user can operate the foldable electronic device through the second display screen 800 (the outer screen), ensuring its normal use.

[0159] In some embodiments, as shown in Figures 20 and 21, the control unit 400 is configured to: control the first display screen 200 to issue a first prompt message and a second prompt message when the first housing 110 and the second housing 120 are in the unfolded state, as shown in Figure 20; and control the second display screen 800 to issue the first prompt message and the second prompt message when the first housing 110 and the second housing 120 are in the folded state, as shown in Figure 21. This configuration ensures that the user receives the first and second prompt messages promptly regardless of whether the foldable electronic device is in the unfolded or folded state, preventing the user from unfolding or folding the device when the first temperature value of the bending area 203 is below the temperature threshold, thereby improving the service life of the first display screen 200.

[0160] As for the types of the first and second prompt messages, please refer to the descriptions above, which will not be repeated here.

[0161] Figure 19 is a flowchart of the control method of a foldable electronic device in some embodiments of this application. As shown in Figures 3, 4 and 19, this application also provides a control method of a foldable electronic device, including: S1, obtaining a first temperature value of the bending area 203;

[0162] The first temperature value of the bending region 203 can be obtained directly or indirectly. For example, the temperature value inside the first accommodating space 115 of the first housing 110 can be obtained, and then the first temperature value can be obtained indirectly based on the relationship between the temperature value inside the first accommodating space 115 and the first temperature value of the bending region 203.

[0163] S2. When the first temperature value is less than the temperature threshold, the heating unit 300 is controlled to heat at least the bending area 203. The heating unit 300 may heat only the bending area 203, or it may heat the first screen area 201, the second screen area 202 and the bending area 203 of the entire first display screen 200. No specific limitation is made here.

[0164] With this configuration, when the foldable electronic device is in a low-temperature environment, if the first temperature value of the bending area 203 is less than the temperature threshold, the heating unit 300 can be controlled to heat the bending area 203 of the first display screen 200, thereby increasing the temperature of the bending area 203 and improving the bending performance of the bending area 203 of the first display screen 200. This reduces damage to the first display screen 200 when the user performs folding or unfolding operations.

[0165] In some embodiments, after step S2, the method further includes: S3, if the first temperature value is greater than or equal to a temperature threshold, controlling the heating unit 300 to stop heating the bending area 203. Controlling the heating unit 300 to stop heating the bending area 203 can be achieved by either stopping the heating unit 300 from operating or by controlling the heating unit 300 to enter a low-power state. In the low-power state, the heat generated by the heating unit 300 is less than or equal to the heat dissipated by the first display screen 200, meaning the heat generated by the heating unit 300 in the low-power state is insufficient to raise the temperature of the bending area 203.

[0166] In some embodiments, as shown in Figures 16, 17 and 19, along the thickness direction Z of the first display screen 200, the first display screen 200 includes a flexible panel 220 and a touch layer 230 disposed on the flexible panel 220; the heating unit 300 is at least composed of the flexible panel 220.

[0167] The heating unit 300 controls the heating of at least the bending area 203, including controlling the brightness of the flexible panel 220 to increase to a first brightness value.

[0168] This configuration eliminates the need for an additional heating unit 300, reducing the number of components in foldable electronic devices and thus lowering their cost.

[0169] In some embodiments, the first brightness value can be the maximum brightness value of the flexible panel 220. This setting allows the flexible panel 220 to generate more heat, thereby improving the heating effect on the bending area 203.

[0170] In some embodiments, when the first temperature value is greater than or equal to a temperature threshold, the brightness of the flexible panel 220 is controlled to decrease to a second brightness value; that is, the heating unit 300 is controlled to stop heating the bending area 203, including controlling the brightness of the flexible panel 220 to decrease to the second brightness value. The second brightness value is less than the first brightness value. This configuration avoids the flexible panel 220 from consuming excessive power while remaining in a high-brightness state for extended periods, thereby helping to save power in foldable electronic devices.

[0171] In some embodiments, when the first temperature value is less than a temperature threshold, the foldable electronic device is controlled to issue a first prompt message; when the first temperature value is greater than or equal to the temperature threshold, the foldable electronic device is controlled to issue a second prompt message.

[0172] By controlling the foldable electronic device to issue a first warning message, the user can be promptly alerted to low temperatures, reducing the likelihood of the user folding or unfolding the device in cold environments. By controlling the foldable electronic device to issue a second warning message, the user can be promptly alerted to cancel the warning, thereby minimizing the impact on the user's use of the foldable electronic device.

[0173] In some embodiments, as shown in FIG19, S2, when the first temperature value is less than the temperature threshold, the heating unit 300 is controlled to heat at least the bending area 203, and the first display screen 200 is controlled to emit a first prompt message. The first prompt message includes at least one of first interface text information and first interface color information. This configuration improves the recognizability of the first prompt message and avoids confusion between the user and other prompt messages from the foldable electronic device.

[0174] As shown in Figure 19, S2 includes: S21, determining whether the first temperature value is less than the temperature threshold; if the first temperature value is less than the temperature threshold, then S22 and S23 are executed; wherein, S22, controlling the heating unit 300 to heat at least the bending area 203; S23, controlling the first display screen 200 to issue a first prompt message.

[0175] In some embodiments, as shown in FIG19, S3, when the first temperature value is greater than or equal to the temperature threshold, the heating unit 300 is controlled to stop heating the bending area 203, and the first display screen 200 is controlled to emit a second prompt message; wherein, the second prompt message includes at least one of second interface text information and second interface color information. This setting can improve the recognition of the second prompt message and avoid confusion between the user and other prompt messages of the foldable electronic device.

[0176] As shown in Figure 19, S3 includes: S31, determining whether the first temperature value is greater than or equal to the temperature threshold; if so, then executing S32 and S33; wherein, S32, controlling the heating unit 300 to stop heating the bending area 203; S33, controlling the first display screen 200 to issue a second prompt message.

[0177] Figure 22 is a flowchart of a control method for a foldable electronic device in some other embodiments of this application. As shown in Figures 20, 21, and 22, this application also provides a control method for a foldable electronic device, including:

[0178] N1: Obtain the first temperature value of the bending zone 203;

[0179] N2: When the first housing 110 and the second housing 120 are in the unfolded state and the first temperature value is less than the temperature threshold, the heating unit 300 is controlled to heat at least the bending area 203, and the first display screen 200 is controlled to issue a first prompt message.

[0180] Specifically, N2 includes: N21, determining whether the first housing 110 and the second housing 120 are in an unfolded state; if the first housing 110 and the second housing 120 are in an unfolded state, then execute N22, determining whether the first temperature value is less than a temperature threshold; if the first temperature value is less than the temperature threshold, then execute N23 and N24, wherein N23, controlling the heating unit 300 to heat at least the bending area 203; and N24, controlling the first display screen 200 to issue a first prompt message.

[0181] N3. When the heating unit 300 heats the bending area 203 and the first temperature value is greater than or equal to the temperature threshold, control the heating unit 300 to stop heating the bending area 203 and control the first display screen 200 to issue a second prompt message.

[0182] Specifically, N3 includes: N31, determining whether the first temperature value is greater than or equal to the temperature threshold; if the first temperature value is greater than or equal to the temperature threshold, then executing N32 and N33; wherein, N32, controlling the heating unit 300 to stop heating the bending area 203; and N33, controlling the first display screen 200 to issue a second prompt message.

[0183] In some embodiments, as shown in FIG22, the control method for the foldable electronic device includes:

[0184] N4: When the first housing 110 and the second housing 120 are in a folded state and the first temperature value is less than the temperature threshold, the heating unit 300 is controlled to heat at least the bending area 203, and the second display screen 800 is controlled to issue a first prompt message.

[0185] Specifically, N4 includes: N41, determining whether the first housing 110 and the second housing 120 are in a folded state; if the first housing 110 and the second housing 120 are in a folded state, then execute N42, determining whether the first temperature value is less than the temperature threshold; if the first temperature value is less than the temperature threshold, then execute N43 and N44, wherein N43, controlling the heating unit 300 to heat at least the bending area 203; and N44, controlling the second display screen 800 to issue a first prompt message.

[0186] N5. When the heating unit 300 heats the bending area 203 and the first temperature value is greater than or equal to the temperature threshold, control the heating unit 300 to stop heating the bending area 203 and control the second display screen 800 to issue a second prompt message.

[0187] Specifically, N5 includes: N51, determining whether the first temperature value is greater than or equal to the temperature threshold; if the first temperature value is greater than or equal to the temperature threshold, then executing N52 and N53; wherein, N52, controlling the heating unit 300 to stop heating the bending area 203; N53, controlling the second display screen 800 to issue a second prompt message.

[0188] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a control unit, implements the control method for the foldable electronic device described in the above method embodiments.

[0189] This application also provides a computer program product that, when run on a foldable electronic device, enables the foldable electronic device to implement the control method described in the above-described method embodiments.

[0190] This application also provides a chip system including a control unit. The control unit includes a processor and a memory. The processor executes a computer program stored in the memory to implement the control method described in the above method embodiments. The chip system can be a single chip or a chip module composed of multiple chips.

[0191] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, or magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0192] Those skilled in the art will understand that implementing all or part of the processes in the above embodiments can be accomplished by a computer program instructing related hardware. This program can be stored in a computer-readable storage medium, and when executed, it can include the processes described in the above method embodiments. The aforementioned storage medium can include various media capable of storing program code, such as ROM or random access memory (RAM), magnetic disks, or optical disks.

[0193] The naming or numbering of steps in this application does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effect can be achieved.

[0194] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0195] In the embodiments provided in this application, it should be understood that the disclosed apparatus / devices and methods can be implemented in other ways. For example, the apparatus / device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0196] The types of cross-sectional lines in the accompanying drawings are for distinguishing different components and should not be construed as limiting the materials of the components. The accompanying drawings are for illustrating structural composition and are not shown to scale of the actual product.

[0197] While the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may arise based on the claims of this application. To provide a thorough understanding of this application, many specific details are included in the above description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0198] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0199] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0200] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The directional terms mentioned in the embodiments of this application, such as "upper," "lower," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. "Multiple" refers to at least two.

[0201] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0202] 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 of the technical features. 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. A foldable electronic device, characterized in that, Includes a foldable housing, a first display screen, a heating unit, and a control unit; The foldable housing includes a first housing, a second housing, and a pivot mechanism disposed at the junction of the first housing and the second housing. The first housing and the second housing can switch between an unfolded state and a folded state. The first display screen has a first screen area, a second screen area, and a bending area. The first screen area is disposed on the first housing, the second screen area is disposed on the second housing, and the bending area is disposed on the rotating shaft mechanism. The heating unit is used to heat at least the bending area of ​​the first display screen, and the control unit is used to: obtain a first temperature value of the bending area; and control the heating unit to heat at least the bending area when the first temperature value is less than a temperature threshold.

2. The foldable electronic device according to claim 1, characterized in that, Along the thickness direction of the first display screen, the first display screen includes a support layer, a flexible panel disposed on the support layer, and a touch layer disposed on the flexible panel, and the heating unit is disposed between the touch layer and the support layer.

3. The foldable electronic device according to claim 2, characterized in that, The heating unit is at least composed of the flexible panel; the control unit is used to: control the brightness of the flexible panel to increase to a first brightness value when the first temperature value is less than the temperature threshold.

4. The foldable electronic device according to claim 3, characterized in that, The first brightness value is the maximum brightness value of the flexible panel.

5. The foldable electronic device according to claim 3 or 4, characterized in that, The control unit is configured to: control the brightness of the flexible panel to decrease to a second brightness value when the first temperature value is greater than or equal to the temperature threshold; wherein the second brightness value is less than the first brightness value.

6. The foldable electronic device according to claim 2, characterized in that, The heating unit includes a heating wiring layer disposed between the support layer and the flexible panel, and the heating wiring layer is at least partially located in the bending area.

7. The foldable electronic device according to claim 6, characterized in that, The heating trace layer includes a carrier layer and heating traces disposed on the carrier layer. The heating traces are serpentine traces, and / or the heating traces are ITO traces.

8. The foldable electronic device according to claim 1, characterized in that, The heating unit includes a bendable heating element disposed between the first display screen and the foldable housing; the heating element has a first heating element area, a second heating element area and a third heating element area, the first heating element area is disposed on the first housing, the second heating element area is disposed on the second housing, and the third heating element area is disposed on the rotating shaft mechanism.

9. The foldable electronic device according to claim 8, characterized in that, Along the thickness direction of the heating element, the heating element includes a first thermally conductive layer and a second thermally conductive layer stacked together, wherein the first thermally conductive layer is a metal layer or an alloy layer, and the second thermally conductive layer is a graphite layer.

10. The foldable electronic device according to claim 9, characterized in that, The first thermal conductive layer is disposed on the side of the second thermal conductive layer that is close to the first display screen.

11. The foldable electronic device according to claim 9 or 10, characterized in that, The thickness of the first thermally conductive layer is less than the thickness of the second thermally conductive layer.

12. The foldable electronic device according to any one of claims 9 to 11, characterized in that, The first heat-conducting layer has a hollowed-out portion, which is at least partially located in the third heating element area and penetrates the first heat-conducting layer.

13. The foldable electronic device according to claim 12, characterized in that, The cutout portion is a slit, which extends along the arrangement direction of the first heating element area, the second heating element area, and the third heating element area.

14. The foldable electronic device according to any one of claims 8 to 13, characterized in that, The first heating element area is fixedly connected to the first housing, and the second heating element area is freely disposed between the second screen area and the second housing.

15. The foldable electronic device according to claim 14, characterized in that, The first housing includes a first middle frame and a first rear cover. The first screen area is disposed on one side of the first middle frame, the first rear cover is disposed on the other side of the first middle frame, the first heating element area is disposed between the first screen area and the first middle frame, and the first rear cover and the first middle frame form a first accommodating space. A power supply unit is provided in the first accommodating space, and the power supply unit is electrically connected to the first heating element area through a flexible circuit board.

16. The foldable electronic device according to any one of claims 1 to 15, characterized in that, The control unit is configured to: control the foldable electronic device to issue a first prompt message when the first temperature value is less than the temperature threshold; and control the foldable electronic device to issue a second prompt message when the first temperature value is greater than or equal to the temperature threshold.

17. The foldable electronic device according to claim 16, characterized in that, The control unit is used to control the first display screen to emit the first prompt message and the second prompt message.

18. The foldable electronic device according to claim 16, characterized in that, The foldable electronic device further includes a second display screen; the first housing includes a first middle frame, the first screen area is disposed on one side of the first middle frame, and the second display screen is disposed on the other side of the first middle frame; the second housing includes a second middle frame and a second rear cover, the second screen area is disposed on one side of the second middle frame, and the second rear cover is disposed on the other side of the second middle frame; The control unit is configured to: when the first housing and the second housing are in the unfolded state, control the first display screen to issue the first prompt message and the second prompt message; when the first housing and the second housing are in the folded state, control the second display screen to issue the first prompt message and the second prompt message.

19. The foldable electronic device according to claim 17 or 18, characterized in that, The first prompt information includes: first interface text information for prompting that you do not fold or unfold the screen, and / or, first interface color information for prompting that you do not fold or unfold the screen; The second prompt information includes: second interface text information indicating that the operation can be folded and expanded, and / or, second interface color information indicating that the operation can be folded and expanded.

20. The foldable electronic device according to any one of claims 1 to 19, characterized in that, The first housing contains a first circuit board, which includes a carrier substrate. The control unit is located on the carrier substrate. The carrier substrate also contains a plurality of temperature sensors. The control unit is used to obtain the first temperature value based on the temperature values ​​detected by the plurality of temperature sensors.

21. A control method for a foldable electronic device, characterized in that, The foldable electronic device includes a foldable housing, a first display screen, and a heating unit; the foldable housing includes a first housing, a second housing, and a pivot mechanism disposed at the junction of the first housing and the second housing, and the first housing and the second housing can switch between an unfolded state and a folded state; The first display screen has a first screen area, a second screen area, and a bending area. The first screen area is disposed on the first housing, the second screen area is disposed on the second housing, and the bending area is disposed on the rotating shaft mechanism. The heating unit is used to heat at least the bending area of ​​the first display screen. The control method of the foldable electronic device includes: obtaining a first temperature value of the bending area, and controlling the heating unit to heat at least the bending area when the first temperature value is less than a temperature threshold.

22. The control method for the foldable electronic device according to claim 21, characterized in that, Along the thickness direction of the first display screen, the first display screen includes a flexible panel and a touch layer disposed on the flexible panel; the heating unit is at least composed of the flexible panel; Controlling the heating unit to heat at least the bending area includes: controlling the brightness of the flexible panel to increase to a first brightness value.

23. The control method for the foldable electronic device according to claim 22, characterized in that, The first brightness value is the maximum brightness value of the flexible panel.

24. The control method for the foldable electronic device according to claim 22 or 23, characterized in that, When the first temperature value is greater than or equal to the temperature threshold, the brightness of the flexible panel is controlled to decrease to a second brightness value; wherein the second brightness value is less than the first brightness value.

25. The control method for the foldable electronic device according to any one of claims 21 to 24, characterized in that, If the first temperature value is less than the temperature threshold, the foldable electronic device is controlled to issue a first prompt message; If the first temperature value is greater than or equal to the temperature threshold, the foldable electronic device is controlled to issue a second prompt message.

26. The control method for the foldable electronic device according to claim 25, characterized in that, When the first temperature value is less than the temperature threshold, the first display screen is controlled to issue the first prompt message; when the first temperature value is greater than or equal to the temperature threshold, the first display screen is controlled to issue the second prompt message.

27. The control method for the foldable electronic device according to claim 25, characterized in that, The foldable electronic device further includes a second display screen; the first housing includes a first middle frame, the first screen area is disposed on one side of the first middle frame, and the second display screen is disposed on the other side of the first middle frame; the second housing includes a second middle frame and a second rear cover, the second screen area is disposed on one side of the second middle frame, and the second rear cover is disposed on the other side of the second middle frame; When the first housing and the second housing are in the unfolded state, the first display screen is controlled to emit the first prompt message and the second prompt message; When the first housing and the second housing are in the folded state, the second display screen is controlled to issue the first prompt message and the second prompt message.

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