Electronic device and control method for it

Abstract

Electronic device comprising: a first body (10) with a first end and a second end, wherein the first end is a free end; a connecting body (30) with a third end and a fourth end, wherein the third end is connected to the second end; a second body (20) with a fifth end and a sixth end, wherein the fifth end is connected to the fourth end, the sixth end being a free end, wherein the second body (20) is able to move relative to the first body (10) by virtue of the connecting body (30); wherein the electronic device has at least a first rotation mode and a second rotation mode, wherein in the first rotation mode the electronic device is capable of performing a relative rotation between a first part and a second part, wherein an axis of rotation is located at a first position of the connecting body (30).the first part comprises the first body (10) and a first connecting part body, the second part comprises the second body (20) and a second connecting part body, the first connecting part body and the second connecting part body are formed by dividing the connecting body (30) at the first position, and in the second rotation mode, the electronic device is capable of performing a relative rotation between a third part and a fourth part, wherein an axis of rotation is located at a second position of the connecting body (30), the third part comprises the first body (10) and a third connecting part body, the fourth part comprises the second body (20) and a fourth connecting part body, the third connecting part body and the fourth connecting part body are formed by dividing the connecting body (30) at the second position; wherein the electronic device has a first mode and a second mode,In the first mode, the electronic device rotates in the first rotation mode and the maximum distance between corresponding points of the first body (10) and the second body (20) is less than a first predetermined threshold; in the second mode, the electronic device rotates in the second rotation mode and the maximum distance between corresponding points of the first body (10) and the second body (20) is less than the first predetermined threshold, and the electronic device performs a mode change such that the second body (20) slides relative to the first body (10); wherein the electronic device further comprises: a sensor arranged in the first body and / or in the connecting body and / or in the second body and configured to detect a mode of the electronic device, wherein the sensor comprises a bending detection unit (90) arranged and configured in the connecting body (30).to determine a mode of the electronic device according to a state of the connecting body (30), wherein the bend detection unit (90) comprises an angle sensor that detects a bend angle of the connecting body (30); and a processor that is arranged in the first body (10) and / or in the connecting body (30) and / or in the second body (20) and is configured to control a mode change of the electronic device according to a mode detected by the sensor, wherein the processor is configured to change a display content on a display (70) according to a mode change of the electronic device, the display (70) being arranged at least on a first surface (100) of the first body (10); and when the sensor detects that the mode of the electronic device is changing due to a detected change in the bend angle of the connecting body (30), the processor controls each time the sensor detects,that an exposed region of the display (70) on the first surface (100) of the first body (10) was changed by a predetermined area, the display (70) on the first surface (100) of the first body (10) to change its display content according to the area change of the exposed region of the display (70) on the first surface (100) of the first body (10).

Description

TECHNICAL FIELDThe present disclosure relates to the field of electronic devices, and more particularly, to an electronic device and a mode switching method thereof.BACKGROUNDIn general, there are various kinds of devices such as mobile phones, including those of bar type having numeric and function keys attached to the outer surface, those having trays and those of folding type which are foldable. The screen size of mobile phones is constantly increasing, and also the need for handheld collapsible devices (or hand devices) is increasing remarkably because of practical handling. Since flexible screens are light in weight, not prone to breakage, and easily bent and collapsed, hand-held electronic devices of large size and flexible screen will become the future trend in this industry.Currently, in existing solutions, folding modes of the handheld flexible screen collapsible devices can be switched by collapsing the devices. However, such a turning operation is impractical for a user to perform. When the device is in a collapsed state, its screen is completely covered and thus the user cannot see messages in time.From the publication US 2015 / 0 009 128 A1 a data processing device is known, which comprises an input / output unit with a display part, which can be folded in and out, and a sensor part, which can detect the folded in and out state of the display part and supply data for folding in, and a computing unit, which stores a program for executing different processings depending on the data for folding in.SUMMARYIt is an object of the present invention to provide an improved electronic device having a first mode and a second mode, and a mode switching method for switching between the first mode and the second mode of such an electronic device.This object is achieved by the subject matters of the main claim 1 and the subordinate claim 12 which determine the present invention.Preferred embodiments of the present invention are the subject of the dependent claims.In order to solve the above problems, according to an aspect of the present disclosure, there is provided an electronic device comprising: a first body having a first end and a second end, the first end being a free end; a connection body having a third end and a fourth end, the third end being connected to the second end; a second body having a fifth end and a sixth end, the fifth end being connected to the fourth end, the sixth end being a free end, the second body being movable relative to the first body by the connection body; the electronic device having at least a first rotation mode and a second rotation mode, wherein in the first rotation mode, the electronic device is capable of performing relative rotation between a first part and a second part, wherein a rotation axis is located at a first position of the connection body, the first part comprises the first body and a first connection part body, the second part comprises the second body and a second connection part body, the first connection part body and the second connection part body are formed by dividing the connection body at the first position, and in the second rotation mode, the electronic device is capable of performing a relative rotation between a third part and a fourth part, wherein a rotation axis is located at a second position of the connection body, the third part comprises the first body and a third connection part body, the fourth part comprises the second body and a fourth connection part body, the third connection part body and the fourth connection part body are formed by dividing the connection body at the second position; wherein the electronic device has a first mode and a second mode, in the first mode, the electronic device rotates in the first rotation mode and a maximum distance between corresponding points of the first body and the second body is less than a first predetermined threshold, in the second mode, the electronic device rotates in the second rotation mode and a maximum distance between corresponding points of the first body and the second body is less than a first predetermined threshold, and the electronic device performs a mode change such that the second body slides relative to the first body.The electronic device further includes a sensor disposed in the first body and / or the connection body and / or the second body and configured to detect a mode of the electronic device, the sensor including a bending detection unit disposed in the connection body and configured to determine a mode of the electronic device according to a state of the connection body, the bending detection unit including an angle sensor that detects a bending angle of the connection body.The electronic device further includes a processor disposed in the first body and / or the connection body and / or the second body and configured to control a mode change of the electronic device according to a mode detected by the sensor, wherein the processor is configured to change a display content on a display according to a mode change of the electronic device, wherein the display is disposed at least on a first surface of the first body.When the sensor detects that the mode of the electronic device changes due to a detected change in the bending angle of the connection body, each time the sensor detects that an exposed region of the display on the first surface of the first body has been changed by a predetermined area, the processor controls the display on the first surface of the first body to change its display content according to the area change of the exposed region of the display on the first surface of the first body.According to an embodiment of the present disclosure, the first mode and the second mode may be switched such that a distance between the sixth end and the first surface of the first body is kept smaller than the first predetermined threshold.According to an embodiment of the present disclosure, when switching between the first mode and the second mode, a distance between the first surface of the first body and the first surface of the second body is kept smaller than the first predetermined threshold.According to an embodiment of the present disclosure, any mode during a transition between the first mode and the second mode is a mode that can be stably held without external force.According to an embodiment of the present disclosure, in the first mode, when an external force having a component in a direction from the sixth end to the fifth end acts on the second body and a magnitude of the component of the external force reaches a first predetermined value, the electronic device is switched from the first mode to the second mode; and in the second mode, when an external force having a component in a direction from the fifth end to the sixth end acts on the second body and a magnitude of the component of the external force reaches a first predetermined value, the electronic device is switched from the second mode to the first mode.According to an embodiment of the present disclosure, the electronic device further includes a third mode in which a first outer surface made up of a first surface of the first body, a first surface of the connection body, and the first outer surface of the second body is flat or approximately flat.According to an embodiment of the present disclosure, the connection body includes at least three rotating elements, each of the at least three rotating elements having a self-rotating shaft, the respective self-rotating shafts of the at least three rotating elements are parallel to each other, and when an external force acting on a rotating element is vertical to the self-rotating shaft and a magnitude of a component in a direction tangential to an outer surface of the one rotating element reaches a second predetermined value that a rotating element can rotate about its self-rotating shaft.According to an embodiment of the present disclosure, when the one rotating element rotates, the other rotating elements rotate accordingly; or when the one rotating element rotates, at least one of the other rotating elements does not rotate.According to an embodiment of the present disclosure, the connection body is composed of the at least three rotating elements; or the connection body includes two rotating element groups and at least one non-rotating element between the two rotating element groups, each rotating element group including at least two rotating elements.According to an embodiment of the present disclosure, an area of a first uncovered part of the display in the first mode is different from an area of a second uncovered part of the display in the second mode.According to an embodiment of the present disclosure, the display is a deformable display, wherein the display is disposed at least in a region formed by the first surface of the first body and the first surface of the second body; or the display is formed in a region formed by the first surface of the first body, the first surface of the connection body, and the first surface of the second body; and in the first mode and the second mode, a part of the display covers another part of the display.According to an embodiment of the present disclosure, the sensor includes a photosensitive unit, and the photosensitive unit includes a light detection array disposed corresponding to a lighting array of the display and configured to determine an exposed region of the display according to a region satisfying a predetermined illuminance threshold in the light detection array to determine a mode of the electronic device.According to another embodiment of the present disclosure, there is provided a mode switching method applied to an electronic device, the mode switching method comprising: detecting a mode of the electronic device; and controlling a mode switching of the electronic device according to a detected mode; the electronic device comprising: a first body having a first end and a second end; a connection body having a third end and a fourth end, the third end being connected to the second end; a second body having a fifth end and a sixth end, the fifth end being connected to the fourth end, the second body being capable of moving relative to the first body due to the connection body; the electronic device having at least a first rotation mode and a second rotation mode, wherein in the first rotation mode, the electronic device is capable of performing relative rotation between a first part and a second part, a rotation axis being located at a first position of the connection body, the first part comprises the first body and a first connection part body, the second part comprises the second body and a second connection part body, the first connection part body and the second connection part body are formed by dividing the connection body at the first position, and in the second rotation mode, the electronic device is capable of performing relative rotation between a third part and a fourth part, a rotation axis being located at a second position of the connection body, the third part comprises the first body and a third connection part body, the fourth part comprises the second body and a fourth connection part body, the third connection part body and the fourth connection part body are formed by dividing the connection body at the second position; wherein the electronic device has a first mode and a second mode, in the first mode, the electronic device rotates in the first rotation mode and a maximum distance between corresponding points of the first body and the second body is less than a first predetermined threshold, in the second mode, the electronic device rotates in the second rotation mode and a maximum distance between corresponding points of the first body and the second body is less than one of the first predetermined threshold, and the electronic device performs a mode change such that the second body slides relative to the first body.The electronic device further includes a sensor disposed in the first body and / or the connection body and / or the second body and configured to detect a mode of the electronic device, the sensor including a bending detection unit disposed in a connection body and configured to determine a mode of the electronic device according to a state of the connection body, the bending detection unit including an angle sensor that detects a bending angle of the connection body.The electronic device further comprises a processor disposed in the first body and / or the connection body and / or the second body and configured to control a mode change of the electronic device according to a mode detected by the sensor.The method further includes switching display content on a display according to a mode change of the electronic device, the display being disposed on at least a first surface of the first body; wherein the switching display content on the display according to a mode change of the electronic device further includes: when the sensor detects that the mode of the electronic device changes due to a detected change in the bending angle of the connection body, the processor controls, every time the sensor detects that the one exposed region of the display on the first surface of the first body has been changed by a predetermined area, the display on the first surface of the first body to change its display content according to the area change of the exposed region of the display on the first surface of the first body.As stated above, the electronic device and the mode switching method according to the present disclosure can change structures and switching methods of handheld devices, so that the user can switch the electronic device between different folding modes by smooth pushing with fingers. Furthermore, the display screen is not completely covered in the folded state and the user can see messages in good time. Also, the display content on the flexible screens can be changed along with the folding modes of the handheld devices, thus improving the user's experience.BRIEF DESCRIPTION OF THE DRAWINGSBy describing embodiments of the present disclosure in more detail with reference to the accompanying drawings, the above and other objects, features and advantages of the present disclosure will become more apparent. The drawings are for enhancement of understanding of the embodiments of the present disclosure and form a part of the specification, and are intended to explain the present disclosure together with the embodiments and not to limit the present disclosure. In the drawings, the same reference number generally refers to the same component or step. FIGS. 1A and 1B are schematic diagrams illustrating an electronic device according to an embodiment of the present disclosure. FIGS. 2A to 2C are schematic diagrams illustrating a switching operation between a first mode and a second mode of the electronic device according to a first embodiment of the present disclosure. FIG. 3 is a schematic diagram further illustrating the connection body according to the first embodiment of the present disclosure. FIGS. 4A to 4C are schematic diagrams illustrating a switching operation between the first mode and the second mode of the electronic device according to a second embodiment of the present disclosure. FIG. 5 is a schematic diagram further showing the connection body according to the second embodiment of the present disclosure. FIGS. 6A and 6B are schematic diagrams illustrating a third mode of the electronic device according to the first and second embodiments of the present disclosure. FIGS. 7A to 7C are schematic diagrams illustrating a switching operation between the first mode and the third mode according to the first and second embodiments of the present disclosure. FIGS. 8A and 8B are schematic diagrams illustrating in more detail the electronic device provided with a display. FIG. 9 is a side view schematically showing the first mode of the electronic device according to the first embodiment of the present disclosure. FIG. 10 is a plan view schematically showing the first mode of the electronic device according to the first embodiment of the present disclosure. FIG. 11 is a side view schematically showing the second mode of the electronic device according to the first embodiment of the present disclosure. FIG. 12 is a plan view schematically showing the second mode of the electronic device according to the first embodiment of the present disclosure. FIGS. 13A and 13B are schematic diagrams illustrating the electronic device provided with a sensor in more detail. FIG. 14A shows an example of display content when an exposed region (the uncovered part) of the display is large, FIG. 14B shows an example of display content when an exposed region (the uncovered part) of the display is small, and FIG. 14C shows another example of display content when an exposed region (the uncovered part) of the display is small. FIG. 15 is a first flowchart illustrating a mode switching method according to an embodiment of the present disclosure. FIG. 16 is a second flowchart illustrating a mode switching method according to an embodiment of the present disclosure. FIG. 17 is a block diagram schematically showing a structure of the electronic device according to a third embodiment of the present disclosure. FIGS. 18A and 18B are schematic diagrams illustrating a display of the electronic device according to the third embodiment of the present disclosure in various modes. FIG. 19 is a flowchart showing main steps of an information processing method according to the third embodiment of the present disclosure. FIG. 20 is a block diagram schematically showing a structure of the electronic device according to a fourth embodiment of the present disclosure. FIGS. 21A and 21B are schematic diagrams illustrating a display of the electronic device according to the fourth embodiment of the present disclosure in various modes. FIG. 22 is a flowchart showing main steps of an information processing method according to the fourth embodiment of the present disclosure. FIG. 23 is a perspective view of the first mode of the electronic device according to a fifth embodiment of the present disclosure. FIG. 24 is a perspective view of the second mode of the electronic device according to the fifth embodiment of the present disclosure. FIG. 25 is a perspective view of the third mode of the electronic device according to the fifth embodiment of the present disclosure. FIG. 26 is a perspective view of a fourth mode of the electronic device according to the fifth embodiment of the present disclosure. FIG. 27 is a perspective view of partial input units of respective bodies of the electronic device according to the fifth embodiment of the present disclosure. FIG. 28 is a perspective view of a second input unit of the electronic device according to the fifth embodiment of the present disclosure. FIG. 29 is a perspective view of partial displays of respective bodies of the electronic device according to the fifth embodiment of the present disclosure. FIG. 30 is a perspective view of a first display of the electronic device according to the fifth embodiment of the present disclosure. FIG. 31 is a flowchart of a control method of the electronic device according to the fifth embodiment of the present disclosure. FIG. 32 is a perspective view of a connecting sub input unit of the electronic device according to the fifth embodiment of the present disclosure.DETAILED DESCRIPTION OF THE EMBODIMENTSIn order to clarify the objects, technical solutions, and advantages of the present disclosure, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Since obviously the described embodiments are only a part of the embodiments of the present disclosure and not all of the embodiments of the present disclosure, it should be understood that the present disclosure is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art without inventive efforts are all intended to fall within the scope of the present disclosure.Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.FIG. 1A is a schematic structural diagram illustrating an electronic device 1 according to an embodiment of the present disclosure. In general, the electronic device 1 according to an embodiment of the present disclosure may be an electronic device such as a tablet computer, a smart phone, a personal digital assistant, a smart wearable device. Hereinafter, for convenience of description, the smart phone will be described as an example of the electronic device.As illustrated in FIG. 1A, the electronic device 1 according to an embodiment of the present disclosure may include a first body 10, a second body 20, and a connection body 30. Specifically, as shown in FIG. 1A, the first body 10 may have a first end 11 and a second end 12, wherein the first end 11 may be a free end and the second end 12 may be connected to a third end 31 of the connection body 30. The connection body 30 may have a third end 31 and a fourth end 32, wherein the third end 31 of the connection body 30 may be connected to the second end 12 of the first body 10 and the fourth end 32 of the connection body 30 may be connected to a fifth end 131 of the second body 20, wherein the connection body 30 may rotate relative to the first body 10. The second body 20 may have a fifth end 131 and a sixth end 132, wherein the fifth end 131 may be connected to the fourth end 32 of the connecting body 30, and the sixth end 132 of the second body 20 may be a free end, wherein the second body 20 may move relative to the first body 10 by means of the connecting body 30. In addition, it should be noted that the term "end" as used herein refers to a part in a certain range of respective end surfaces of the first body 10, the second body 20, and the connection body 30. For example, the first end 11 of the first body may be at least a side surface part of the electronic device 1 around the first end 11 of the first body.Specifically, FIG. 1B shows a schematic structural block diagram of the electronic device 1 according to an example of the present disclosure. As illustrated in FIG. 1B, the second end 12 of the first body 10 may be connected to the third end 31 of the connection body 30 by a first connection member 140, wherein the first connection member 140 may allow the first body 10 and the second body 20 to rotate relative to each other, whereby a first surface of the first body 10 and a first surface of the second body 20 may be close to or relatively far from each other. And, the connecting body 30 and the second body 20 may be connected by a second connecting member 150, wherein the relative rotation of the connecting body 30 and the second body 20 may bring the first surface of the connecting body 30 and the first surface of the second body 20 close to each other or relatively far apart. In this example, when the electronic device has a display screen, the first surface of the first body 10, the first surface of the connection body 30, and the first surface of the second body 20 may be a surface on which the electronic device 1 has the display screen.In other embodiments of the present disclosure, the connection body 30 may be comprised of a plurality of rotating elements and a non-rotating element therebetween, wherein the rotating elements that establish a connection between the connection body 30 and the first body 10 and a connection between the connection body 30 and the second body 20 are collectively considered as a constituent part of the connection body 30. In other words, the entire body that is neither the first body 10 nor the second body 20 in the electronic device 1 is regarded as the connection body 30.The electronic device 1 as illustrated in FIG. 1A may have at least a first rotation type and a second rotation type. Specifically, in the first rotation mode, the electronic device 1 is capable of performing relative rotation between a first part and a second part of the electronic device 1, with a rotation axis located at a first position of the connection body 30. The first part includes the first body 10 and a first connection part body; the second part includes the second body 20 and a second connection part body; the first connection part body and the second connection part body are formed by dividing the connection body 30 at the first position. In the second rotation mode, the electronic device 1 is capable of performing relative rotation between a third part and a fourth part with a rotation axis at a second position of the connection body 30. The third part includes the first body 10 and a third connection part body; the fourth part includes the second body 20 and a fourth connection part body; the third connection part body and the fourth connection part body are formed by dividing the connection body 30 at the second position.For example, in an embodiment of the disclosure, as illustrated in FIG. 1A, the first position may be a position on the connection body 30 where a broken line 123 is drawn. In this case, the first position divides the connection body 30 into the first connection part body and the second connection part body. The connection part body adjacent to the first body 10 is the first connection part body, and the connection part body adjacent to the second body 20 is the second connection part body. The first body 10 and the first connection part body form the first part 160 and the second body 20 and the second connection part body form the second part 170. In the present embodiment, the second position may be a position on the connection body 30 where a broken line 124 is drawn. In this case, the second position divides the connection body 30 into the third connection part body and the fourth connection part body. The connection part body adjacent to the first body 10 is the third connection part body, and the connection part body adjacent to the second body 20 is the fourth connection part body. The first body 10 and the third connection part body constitute the third part, and the second body 20 and the fourth connection part body constitute the fourth part. Generally, the first position is closer to the first body 10 than the second position. In the first rotation mode of the electronic device, the electronic device 1 may use the line where the first position is located as its rotation axis, so that the first part and the second part are set in rotation relative to each other, so that the second part may partially cover a first surface of the first part. In the second rotation mode of the electronic device, the electronic device 1 may use the line where the second position is located as its rotation axis, such that the third part and the fourth part are rotated relative to each other, such that the fourth part may partially cover a first surface of the third part.In an embodiment of the disclosure, the electronic device may also have a first mode and a second mode. In the first mode, the electronic device 1 rotates in the first rotation mode, and a maximum distance between corresponding points of the first body 10 and the second body 20 is smaller than a first threshold value. In the second mode, the electronic device 1 rotates in the second rotation mode, and a maximum distance between corresponding points of the first body 10 and the second body 20 is smaller than a first threshold value. The exposed region on the first surface of the first body of the electronic device in the first mode is smaller than that in the second mode.Specifically, FIGS. 2A to 2C are schematic diagrams showing a first mode, a switching operation from the first mode to a second mode, and a second mode of the electronic device 1 according to a first embodiment of the present disclosure. FIG. 2A shows the first mode of the electronic device according to the first embodiment of the present disclosure, FIG. 2C shows the second mode of the electronic device according to the first embodiment of the present disclosure, and FIG. 2B shows an arbitrary mode during a switching operation between the first mode and the second mode according to the first embodiment of the present disclosure.As shown in FIG. 2A, in the first mode, a first surface 100 of the first body 10 is covered by the connecting body 30 and the second body 20. As illustrated in FIG. 2C, in the second mode, a surface composed of the first surface 100 of the first body 10 and a first surface 300 of the connection body 30 is covered by the second body 20. It is understood that a cover in the first mode and the second mode includes an overall cover and a partial cover. Specifically, when the second body 20 is short enough, in the second mode illustrated in FIG. 2C in which a surface composed of the first surface 100 of the first body 10 and a first surface 300 of the connection body 30 is covered by the second body 20, the second body 20 may only cover the first surface 300 of the connection body 30.As illustrated in FIG. 2B, an arbitrary mode is a mode that can be stably held without external force because there is attenuation between respective members constituting the connection body 30 in the arbitrary mode in a switching operation between the first mode and the second mode. For the same reasons, in this case, the first mode and the second mode are also modes that can be stably held without external force. The present disclosure is not limited thereto, the first mode, the second mode, and the arbitrary mode may be modes that require an external force to remain stable during a switching operation between the first mode and the second mode. The configuration of the connection body 30 will be described below in detail with reference to the accompanying drawings.In addition, as illustrated in FIGS. 2A to 2C, in the first mode and the second mode, a maximum distance between respective points of the first body 10 and the second body 20 is less than a first predetermined threshold L. As is apparent, the respective points of the first body 10 and the second body 20 are a pair of interbody points of a straight line vertically passing through a plane where the first body 10 and the second body 20 are located on the above plane. In the electronic device according to the first embodiment of the present disclosure, as illustrated in FIGS. 2A to 2C, the first body 10 and the second body 20 are capable of being in an approximate fit in the first mode, the second mode, and any state between the two. That is, the first threshold L may be 5 mm or less.In a case, in a process in which the electronic device switches from the first mode to the second mode through the arbitrary mode, a distance between the sixth end 22 of the second body 20 and the first surface 100 of the first body 10 is kept smaller than the first predetermined threshold. The distance between the sixth end 22 of the second body 20 and the first surface 100 is a distance between any point on the sixth end 22 and a corresponding point on the first body 10.In another case, when switching between the first mode and the second mode, a distance between the first surface 100 of the first body 10 and a first surface 200 of the second body 20 is also smaller than the first predetermined threshold. That is, in this case, the first body 10 and the second body 20 slide relatively in parallel as a whole to perform mode switching. Hereinafter, a configuration of the connection body 30 will be described with reference to the accompanying drawings to show a correspondence between another mode switching operation and the configuration of the connection body 30.In addition, in the mode switching operation illustrated in FIGS. 2A to 2C, an external force must act on the electronic device. Specifically, in the first mode illustrated in FIG. 2A, when an external force F having a component in a direction from the sixth end 22 to the fifth end 21 acts on the second body 20 and a magnitude of the component of the external force satisfies a first predetermined value, the electronic device shifts from the first mode to the second mode. In the second mode illustrated in FIG. 2C, when an external force F having a component in a direction from the fifth end 21 to the sixth end 22 acts on the second body 20 and a magnitude of the component of the external force satisfies a first predetermined value, the electronic device also shifts from the second mode to the first mode. As is apparent, the external force acting on the second body 20 of the electronic device is transmitted to the connection body 30 to overcome the attenuation between corresponding elements of the connection body 30. The configuration of the connection body 30 will be described below with reference to the accompanying drawings to show a correspondence between the force that causes a mode change in the electronic device and the configuration of the connection body 30.FIG. 3 is a schematic diagram further illustrating the connection body according to the first embodiment of the present disclosure. As illustrated in FIG. 3, the connection body 30 according to the first embodiment of the present disclosure may include at least three rotating elements 301- 30 n(n is an integer greater than or equal to 3), each of the at least three rotating elements 301- 30 nhaving a self-rotating shaft 311- 31 n, the respective self-rotating shafts 311- 31 nof the at least three rotating elements 301- 30 nbeing parallel to each other. For example, when an external force acting on one rotating element 301 to the self-rotating shaft 311 is vertical, and a magnitude of a component in a direction tangential to an outer surface of the one rotating element 301 satisfies a second predetermined value, the one rotating element 301 may rotate about the self-rotating shaft 311. Here, the second predetermined value is associated with the manufacturing material, the manufacturing process, and other factors of the at least three rotary members 301- 30 n. In addition, when there is no external force satisfying the second predetermined value at each of the at least three rotating elements 301- 30 n, the at least three rotating elements 301- 30 ncan be likely to maintain mutual stability due to the damping, thus guaranteeing a relatively stable state between the first body 10, the second body 20, and the connection body 30 of the electronic device 1.As illustrated above with reference to FIGS. 2A to 2C, the external force acting on the second body 20 serves to cause the at least one rotating element in the connection body 30 to satisfy the above-mentioned second predetermined value and thereby rotate about the self-rotating shaft. Since there may be a difference in direction (i.e., the direction from the sixth end 22 to the fifth end 21 is likely to be different from the direction vertical to the self-rotating shaft and tangential to an outer surface of the one rotating element) or other loss in a process of transmitting the external force acting on the second body 20 to at least one rotating element in the connection body 30, the first predetermined value may be larger than the second predetermined value.Further, in the first embodiment of the present disclosure, the connection body 30 according to the first embodiment of the present disclosure may be composed of only the at least three rotating members 301- 30 n. In addition, in an example of the first embodiment of the present disclosure, when one rotating element (e.g., rotating element 301) rotates, the other rotating elements (rotating elements 302- 30 n) rotate accordingly. For example, the at least three rotating elements 301- 30nare gear elements that mesh with each other when one gear element rotates, it drives all other meshing gear elements that rotate in conjunction with the same line speed (at the same angular speed in the case of the same radius). Alternatively, when all the rotary elements rotate in conjunction, rotational speeds of the respective rotary elements (line speed and / or angular speed) may be different probably due to other types of engagement and other friction and other consumption of the respective rotary elements. In addition, in another example of the first embodiment of the present disclosure, when a rotating element (e.g., rotating element 301) rotates, at least one of the other rotating elements does not rotate, that is, not all the rotating elements are communicated, but at least one rotating element that is not communicated is presentIn a case where all the rotating elements of the connecting body 30 are connected, rotation of one rotating element rotates all the other rotating elements at the same or different rotational speed, so that in the mode switching operation illustrated in FIGS. 2A to 2C, the first body 10 and the second body 20 cannot maintain parallel sliding movement as a whole, and instead, the rotation of all the rotating elements in the connecting body 30 results in fluctuation. In contrast, in a case where at least one rotating member that is not connected in the connection body 30, only rotating members in a folded region of the connection body 30 are likely to rotate, rotating members in the other regions of the connection body 30 are not rotated in connection, thereby the mode switching operation is illustrated in FIGS. 2A to 2C.FIGS. 4A to 4C are schematic diagrams illustrating a switching operation between the first mode and the second mode of the electronic device according to a second embodiment of the present disclosure. Specifically, FIG. 4A shows the first mode of the electronic device according to the second embodiment of the present disclosure, FIG. 4C shows the second mode of the electronic device according to the second embodiment of the present disclosure, and FIG. 4B shows an arbitrary mode during a switching operation between the first mode and the second mode according to the second embodiment of the present disclosure.Similar to the electronic device according to the first embodiment of the present disclosure illustrated in FIGS. 2A to 2C, in the first mode, as illustrated in FIG. 4A, a first surface 100 of the first body 10 is covered by the connection body 30 and the second body 20. As illustrated in FIG. 4C, in the second mode, a surface composed of the first surface 100 of the first body 10 and a first surface 300 of the connection body 30 is covered by the second body 20.Also, similar to the electronic device according to the first embodiment of the present disclosure, as illustrated in FIGS. 2A to 2C, the arbitrary mode in a switching operation between the first mode and the second mode may be a mode that can be stably held without external force or a mode that must be stably held with external force.It should be noted that the electronic device according to the second embodiment of the present disclosure as illustrated in FIGS. 4A to 4C differs from the electronic device according to the first embodiment of the present disclosure as illustrated in FIGS. 2A to 2C in that: since the configuration of the connection body 30 is different from that of the connection body of the electronic device according to the first embodiment described with reference to FIG. 3, in the switching operation from the first mode as illustrated in FIG. 4A to the second mode as illustrated in FIG. 4C, the first body 10 and the second body 20 do not slide in parallel as a whole in an approximate fit, but only the sixth end 22 of the second body 20 slides in an approximate fit with the first body 10, There is always a first angle α between the first surface 100 of the first body 10 and the first surface 200 of the second body 20, and there is always a second angle β between the second body 20 and the connecting body 30.Although in the second embodiment of the present disclosure, the first body 10 and the second body 20 as a whole do not slide in parallel in an approximate fit, as illustrated in FIGS. 4A to 4C, in the first mode and the second mode, a maximum distance between corresponding points of the first body 10 and the second body 20 is also less than a first predetermined threshold value. As is apparent, the first predetermined threshold in the second embodiment of the present disclosure is larger than the first predetermined threshold in the first embodiment, for example, the first predetermined threshold in the second embodiment of the present disclosure is 1 cm, and its specific length depends predominantly on the non-rotating member 60 in the connection body 30. Also, in a process in which the electronic device switches from the first mode to the second mode through the arbitrary mode, a distance between the sixth end 22 of the second body 20 and the first surface 100 is kept smaller than the first predetermined threshold.In addition, in the mode switching operation illustrated in FIGS. 4A to 4C, an external force must act on the electronic device. Specifically, in the first mode, as illustrated in FIG. 4A, when an external force F having a component in a direction from the sixth end 22 to the fifth end 21 acts on the second body 20, and a magnitude of the component of the external force satisfies a first predetermined condition, the electronic device shifts from the first mode to the second mode. Also, in the second mode, as illustrated in FIG. 4C, when an external force F having a component in a direction from the fifth end 21 to the sixth end 22 acts on the second body 20, and a magnitude of the component of the external force satisfies a first predetermined condition, the electronic device shifts from the second mode to the first mode. As already described above with reference to FIGS. 2A to 2C and 3, the first predetermined value may be greater than the second predetermined value.FIG. 5 is a schematic diagram further showing the connection body according to the second embodiment of the present disclosure. As illustrated in FIG. 5, the connection body 30 according to the second embodiment of the present disclosure includes two rotating element groups 40 and 50 and at least one non-rotating element 60 between the two rotating element groups, each rotating element group 40 and 50 including at least two rotating elements 401, 402, 501, 502. As described above, each of the at least two rotating elements 401 and 402 (or 501 and 502) has a self-rotating shaft 411 and 412 (or 511 and 512), and corresponding self-rotating shafts 411 and 412 (or 511 and 512) of the at least two rotating elements 401 and 402 (or 501 and 502) are parallel to each other. Also, for example, when an external force acting on one rotating member 401 to the self-rotating shaft 411 is vertical, and a magnitude of a component in a direction tangential to an outer surface of the one rotating member 401 satisfies a second predetermined value, the one rotating member 401 may rotate about the self-rotating shaft 411. In addition, when there is no external force on each of the rotating elements of the two rotating element groups 40 and 50 satisfying the second predetermined condition, the respective rotating elements of the two rotating element groups 40 and 50 are likely to maintain mutual stability due to the damping, so that the relative stable state between the first body 10, the second body 20, and the connection body 30 of the electronic device 1 is guaranteed.Also, in an example of the second embodiment of the present disclosure, when one rotating element (e.g., rotating element 401 or 501) rotates, the other rotating elements (rotating element 402 or 502) rotate accordingly. In addition, in another example of the second embodiment of the present disclosure, when the one rotating element (e.g., rotating element 401) rotates, the other rotating element 502 does not rotate. Unlike the connection body 30 formed entirely of rotating members in the above first embodiment, the first body 10 and the second body 20 do not maintain parallel sliding movement in the entire mode switching operation as a whole, because there is the non-rotating body 60 in the connection body 30 of the second embodiment of the present disclosure whether the rotating members therein all rotate in connection or a rotating member that does not rotate in connection is present.FIGS. 6A and 6B are schematic diagrams illustrating a third mode of the electronic device according to the first and second embodiments of the present disclosure. Specifically, FIG. 6A shows a case of the first embodiment where the connection body 30 is composed of at least three rotating elements 301- 30 n, FIG. 6B shows a case of the second embodiment where the connection body 30 includes two rotating element groups 40 and 50, and at least one rotating element 60 between the two rotating element groups. As illustrated in FIGS. 6A and 6B, the electronic device further has a third mode in which a first outer surface comprised of the first surface 100 of the first body 10, the first surface 300 of the connection body 30, and the first surface 200 of the second body 20 is flat or approximately flat. Specifically, the thickness of the first body 10, thickness of the second body 20, and thickness of the connection body 30 are exactly the same, and when the first body 10 and the connection body 30 and the second body 20 and the connection body 30 rotate completely relative to each other to achieve an angle of 180 degrees therebetween, the first outer surface is flat. When the thickness of the first body 10, thickness of the second body 20, and thickness of the connection body 30 are different, or the first body 10 and the connection body 30 and the second body 20 and the connection body 30 do not rotate completely relative to each other and an angle therebetween is less than 180 degrees (e.g., 175 to 180 degrees), the first outer surface is approximately flat.As described above, FIGS. 2A to 2C are schematic diagrams illustrating a switching operation between a first mode and a second mode of the electronic device according to a first embodiment of the present disclosure, and FIGS. 4A to 4C are schematic diagrams illustrating a switching operation between the first mode and the second mode of the electronic device according to a second embodiment of the present disclosure. It is to be appreciated that although in the first embodiment and the second embodiment, the configuration of the connection body 30 is different, the manner of switching between the first mode and the second mode is the same. In addition, FIGS. 7A to 7C are schematic diagrams illustrating a switching operation between the first mode and the third mode according to the first and second embodiments of the present disclosure. In FIGS. 7A to 7C, the specific configuration of the connection body 30 is not particularly illustrated. In other words, in FIGS. 7A to 7C, the connection body 30 may assume either the configuration in the first embodiment or the configuration in the second embodiment. Specifically, FIG. 7A shows the third mode of the electronic device of the present disclosure, FIG. 7C shows the first mode of the electronic device of the present disclosure, and FIG. 7B shows an arbitrary mode during the switching operation between the third mode and the first mode. Comparing FIGS. 2A to 2C, 4A to 4C, and 7A to 7C, it is clearly seen that the difference between the first type and the second type includes: a moving mode of the second body in the first type and the second type is different.Subsequently, different movement modes of the second body 20 in the first type and the second type will be explained from different perspectives.First, viewing from the perspective of different types of acting force is possible.The electronic device 1 can be caused to change between the second mode and the first mode with a first manner. In the second mode having the first type, an external force having a component in the direction from the fifth end 21 to the sixth end 22 acts on the second body 20, and a magnitude of the external force satisfies the second predetermined value, that is, the external force is sufficient to slide the second body 20 relative to the first body 10 through the connection body 30, so that the electronic device shifts from the second mode to the first mode. That is, in this case with the first type, a thrust parallel to the first surface of the electronic device 1 acts on the second body, and goes from the fifth end 21 to the sixth end 22, in other words, a thrust that slides it in a direction close to the first body 10 acts on the second body 20, so that the electronic device 1 switches from the second mode to the first mode. Of course, on the other hand, in the first mode having the first type, an external force having a component in the direction from the sixth end 22 to the fifth end 21 acts on the second body 20, and a magnitude of the external force satisfies the second predetermined value, that is, the external force is sufficient to make the connection body 30 move, so that the electronic device shifts from the first mode to the second mode. That is, in this case with the first type, a thrust acts on the second body in parallel with the first surface of the electronic device 1 and goes from the sixth end 22 to the fifth end 21, in other words, a thrust acts on the second body 20 so as to slide in a direction away from the first body 10, so that the electronic device 1 switches from the first mode to the second mode.The electronic device 1 can be caused to switch between the third mode and the first mode with the second manner. In the third mode having the second type, an external force having a rotational direction component from the sixth end 22 to the vicinity of the first surface of the first body acts on the second body 20, and a magnitude of the external force satisfies a third predetermined value, that is, the external force is sufficient to rotate the second body 20 relative to the first body 10 through the connection body 30, so that the electronic device shifts from the third mode to the first mode. That is, in this case with the second type, a thrust having a certain angle (for example, the angle is 90 degrees) acts on the second body with the first surface of the second body 20, and goes from a rotational direction from the sixth end 22 to the vicinity of the first surface of the first body 10, in other words, a thrust that rotates the second body 10 to a direction near the first surface of the first body 10 acts on the second body 20, so that the electronic device 1 switches from the third mode to the first mode. Of course, on the other hand, in the third mode with the second type, an external force having a component in the rotational direction away from the first surface of the first body 22 acts on the second body 20, and a magnitude of the external force satisfies the third predetermined value, that is, the external force is sufficient to rotate the second body 20 relative to the first body 10 through the connection body 30, so that the electronic device shifts from the first mode to the third mode. That is, in this case with the second type, a thrust having a certain angle (for example, the angle is 90 degrees) acts on the second body 20 with the first surface of the second body 20, and goes from a rotational direction from the sixth end 22 away from the first surface of the first body 10, in other words, a thrust that rotates the second body 10 in a direction away from a first surface of the first body 10 acts on the second body 20, so that the electronic device 1 switches from the first mode to the third mode.Secondly, it is possible to view from the perspective of different directions of movement.The electronic device 1 can be caused to switch between the second mode and the first mode with the first type. In the second mode having the first type, the second body 20 and the first body 10 may move relatively parallel (substantially completely parallel or approximately parallel), with an angle between the first body 10 and the second body 20 remaining constant and smaller than the second predetermined threshold, so that the electronic device 1 switches from the second mode to the first mode. For example, in the first embodiment, the second body 20 and the first body 10 relatively move in parallel as a whole, so that the angle between the first body 10 and the second body 20 remains constant and is zero. However, in the second embodiment, the second body 20 and the first body 10 relatively move approximately parallel within an allowable range, in which case the angle between the first body 10 and the second body 20 remains constant and α is, of course, α is a value less than the second predetermined threshold. On the other hand, in the first mode with the first type, the second body 20 and the first body 10 relatively move in opposite directions, so that the electronic device 1 switches from the first mode to the second mode.The electronic device 1 can be caused to switch between the third mode and the first mode with the second type. In the third mode having the second type, the second body 20 and the first body 10 relatively rotate, and the angle between the first body 10 and the second body 20 continuously decreases, so that the electronic device switches from the third mode to the first mode. On the other hand, in the third mode with the second type, the second body 20 and the first body 10 relatively rotate in directions opposite to each other, and the angle between the first body 10 and the second body 20 continuously increases, so that the electronic device switches from the first mode to the third mode.Subsequently, it is also possible to view from the perspective different distances between the sixth end 22 and the first surface 100 of the first body 10 during a movement.The electronic device 1 can be caused to switch between the second mode and the first mode with the first type. In the second mode, with the first type, the second body 20 moves while the distance between the sixth end 22 and the first surface 100 of the first body 10 is kept smaller than the first predetermined threshold, so that the electronic device 1 switches from the second mode to the first mode. Of course, on the other hand, in the first mode with the first type, the second body 20 moves while the distance between the sixth end 22 and the first surface 100 of the first body 10 is kept smaller than the first predetermined threshold, so that the electronic device 1 switches from the first mode to the second mode. For example, the transition between the second mode and the first mode may be made with the first type in a case where the body 20 and the first body 10 are in a full fit, in which case the distance between the sixth end 22 and the first surface of the first body 10 is zero. As another example, it is also possible to have the sixth end 22 of the second body 20 contact the first surface 100 of the first body 10 while not contacting the rest of the second body 20, in which case the distance between the sixth end 22 and the first surface of the first body 10 is a small value in an allowable range, that is, smaller than the first predetermined threshold.The electronic device 1 can be caused to switch between the third mode and the first mode with the second type. In the third mode having the second type, the second body 20 moves while the distance between the sixth end 22 and the first surface of the first body 10 is made to increase from the second predetermined threshold to a maximum and then is decreased below the first predetermined threshold, so that the electronic device 1 shifts from the third mode to the first mode. Specifically, in the third mode, when, as described above, the first surface 100 of the first body 10, the second surface 200 of the second body 10, and the third surface 300 of the third body 30 are precisely in one plane, then, when switching from the third mode to the first mode with the second type, first, the distance between the sixth end 22 and the first surface of the first body 10 is zero, that is, the second predetermined threshold is zero. Then, given that the second body rotates in a direction close to the first body 10, the distance between the two gradually increases to the maximum, for example, the maximum is reached when the second body 20 and the first body 10 are vertical, after which the distance between the two gradually decreases to the first predetermined threshold, that is, the minimum is reached when the second body 20 and the first body 10 are fully or substantially fitted. In the third mode, when, as described above, the first surface 100 of the first body 10, the second surface 200 of the second body 10, and the third surface 300 of the third body 10 are precisely in one plane, then, when changing from the third mode to the first mode with the second manner, first, the distance between the sixth end 22 and the first surface of the first body 10 is a small value other than zero. On the other hand, in the first mode with the second type, the second body 20 moves while the distance between the sixth end 22 and the first surface of the first body 10 is gradually made to increase from below the first predetermined threshold to a maximum and then is decreased to the second predetermined threshold, so that the electronic device switches from the first mode to the third mode.Previously, for better understanding, differences between the first type and the second type for changing a mode from three different perspectives have been explained. However, the present disclosure is not limited thereto. As will be apparent to those skilled in the art, all other possible perspectives may also be used to explain the differences between the first type and the second type.FIGS. 8A and 8B are schematic diagrams illustrating in more detail the electronic device provided with a display. As illustrated in FIGS. 7A and 7B, the electronic device according to the first and second embodiments of the present disclosure further includes a display 70 disposed at least on the first surface 100 of the first body 10. Further, as illustrated in FIGS. 7A and 7B, an area of a first uncovered part 701 of the display 70 in the first mode is different from an area of a second uncovered part 702 of the display 70 in the second mode.Further, as illustrated in FIGS. 8A and 8B, the display 70 is a deformable display, the display 70 is disposed at least in a region formed by the first surface 100 of the first body 10 and the first surface 200 of the second body 20; or the display 70 is disposed in a region formed by the first surface 100 of the first body 10, the first surface 300 of the connection body 30, and the first surface 200 of the second body 20. In the first mode and the second mode, as described with reference to FIGS. 2A to 2C and 4A to 4C, a part of the display covers another part of the display 70.Hereinafter, the electronic device 1 according to the first embodiment of the present disclosure will be described in detail with reference to FIGS. 9 and 10. FIG. 9 is a side view schematically showing the first mode of the electronic device according to the first embodiment of the present disclosure. FIG. 10 is a plan view schematically showing the first mode of the electronic device according to the first embodiment of the present disclosure.As illustrated in FIGS. 9 and 10, the electronic device 1 has a first mode in which the first surface 100 of the first body 10 and the first surface 200 of the second body 20 are in a parallel state or an approximately parallel state, and a first region 41 of the display 40 can be perceived.It should be noted that although in FIG. 10, the first mode of the electronic device 1 is illustrated as the one in which the first body 10 and the second body 20 are parallel (i.e., the first surface 100 of the first body 10 and the first surface 200 of the second body 20 are parallel), the present disclosure is not limited thereto. In the first mode of the electronic device 1, the first body 10 and the second body 20 may be approximately parallel, i.e., the second body 20 may be slightly inclined to the position of the first body 10 such that the first surface 100 of the first body 10 and the first surface 200 of the second body 20 form a certain angle, or the second body 20 may be inclined away from the position of the first body 10 such that the first surface 100 of the first body 10 and the first surface 200 of the second body 20 also form a certain angle. For example, the angle is between 0 and 30 degrees, but the present disclosure is not limited thereto, those skilled in the art can set the above two inclination directions and angles according to actual need as long as the first region 41 of the display 40 can be perceived in the first mode.For example, in the first mode, a second region 42 (shown in phantom in FIG. 10 ) of the display 40 may not be perceived while the first region 41 of the display 40 may be perceived. "Not Perceptible" may refer to a user of the electronic device not being able to view or not clearly view the content displayed in the second region 42 of the display 40 when the electronic device 1 is in the first mode, or a user of the electronic device not being able to touch the second region 42 of the display 40.For example, in the first mode, the first region 41 of the display 40 is not covered by the second body 20 and the second region 42 of the display is covered by the second body 20. In the first mode illustrated in FIG. 9, the second body 20 and the first body 10 are parallel, whereby the second region 42 of the display 40 is completely covered by the second body 20, while the first region 41 of the display 40 is not covered by the second body 20. Since the second region 42 is covered by the second body 20, the user cannot touch at least the second region 42. It should be noted that although FIG. 9 shows a case where the second region 42 is covered by the second body 20, those skilled in the art do not necessarily infer that the display content is invisible in the second region 42 of the display 40. For example, when the second body 20 is made of a transparent material such as glass, transparent resin, the user in the first mode illustrated in FIG. 9 can see the display content in the second region 42 of the display 40 through the display 40. Alternatively, when the second body is made of a translucent material such as translucent resin, the user can still see the display content in the second region 42 through the second body 20, but in this case, the readability of the display content in the second region 42 is not high.For example, the connection body 30 has a rotating shaft (not illustrated in FIG. 9 ), and the first body 10 and the second body 20 have different lengths in a direction vertical to the rotating shaft. As illustrated in FIG. 9, a length of the first body 10 in a direction vertical to the rotating shaft L 1, a length of the second body 20 in a direction vertical to the rotating shaft is L 2, L 1>L 2. In this case, when the user rotates the second body 20 relative to the first body along the rotation shaft of the connection body 30, it is impossible for the second body 20 to completely cover the first body 10, that is, the user can perceive the first region 41 of the display 40.It should be noted that, although it is illustrated above that the length L 1 of the first body 10 is greater than the length L 2 of the second body 20, the present disclosure is not limited thereto, the length L 1 of the first body 10 may be smaller than the length L 2 of the second body 20 in this case, because the connection body 30 also has a certain length in a direction vertical to the rotation shaft, the second body 20 may still rotate relative to the first body 10 to cover a part of the region of the first body 10 so that the user can perceive the first region 41 of the display 40. In addition, in this case, the user can finally achieve a parallel or relatively parallel state between the first surface 100 of the first body 10 and the first surface 200 of the second body 20 by rotating the first body 10 along the rotation shaft of the connection body 30 relative to the second body 20, so that a part of the display disposed on the second body 20 can be perceived.In addition, it should be noted that, to explain the first mode in more detail, FIG. 10 shows the second display region 42 as being covered by the second body 20 and the connection body 30, but those skilled in the art can infer from the description and teaching of the above embodiments that the second region 42 may be covered only by the second body 20 but is not covered by the connection body 30. In addition, in this embodiment, it is also shown that the display 40 is disposed only on the first surface 100 of the first body 10, but the present disclosure is not limited thereto, the display 40 may be disposed on the first surface 100 of the first body 10 and the third surface 300 of the third body 30, or may be disposed on a first outer surface (which is made up of the first surface 100 of the first body 10, the first surface 300 of the connection body 30, and the first surface 200 of the second body 20) of the electronic device 1.The electronic device may have a second mode. The second mode of the electronic device 1 according to the first embodiment of the present disclosure will be described below in detail with reference to FIGS. 11 and 12. FIG. 11 is a side view schematically showing the second mode of the electronic device according to the first embodiment of the present disclosure. FIG. 12 is a plan view schematically showing the second mode of the electronic device according to the first embodiment of the present disclosure.In the second mode, as illustrated in FIGS. 11 and 12, the first surface 100 of the first body 10 and the first surface 200 of the second body 20 are in a parallel state or in an approximately parallel state, and a third region 43 of the display 40 can be perceived and the third region 43 is different from the first region 41.Although the second mode of the electronic device 1 is illustrated as being the one in which the first body 10 and the second body 20 are parallel (i.e., the first surface 100 of the first body 10 and the first surface 200 of the second body 20 are parallel), the first body 10 and the second body 20 may be approximately parallel as in the description of the first mode above with reference to FIGS. 9 and 10, i.e., the first surface 100 of the first body 10 and the first surface 200 of the second body 20 form a certain angle. For example, the angle is also between 0 and 30 degrees, but the present disclosure is not limited thereto, those skilled in the art may set a degree of the angle according to actual need as long as the third region 43 of the display 40 can be perceived in the second mode.As shown in FIG. 12, in the second mode, the third region 43 of the display 40 is not covered by the second body 20 and a fourth region 44 of the display 40 is covered by the second body 20. Similar to the first mode described above, the user cannot touch at least the fourth region 44 because the fourth region 44 is covered by the second body 20. Although FIG. 12 shows a case where the fourth region 44 is covered by the second body 20, those skilled in the art do not necessarily infer that the display content is invisible in the fourth region 44 of the display 40. In this manner, for example, when the second body 20 is made of a transparent material such as glass, transparent plastic, the user can still see the display content in the fourth region 44 of the display 40 through the display 40. As illustrated in FIG. 12, since the region covered by the first body 20 of the first body 10 in the second mode is smaller than that in the first mode, the third region 43 of the display 40 is larger than the first region 41.Although in the case described with reference to FIGS. 11 and 12, the third region 43 of the display 40 is larger than the first region 41, the present disclosure is not limited thereto, the third region 43 may be smaller than the first region 41. As described above, for example, in the case where the length L 1 of the first body 10 is less than the length L 2 of the second body 20, when the user rotates the first body 10 and makes it cover the second body 20, a part of the region of the display disposed on the second body 20 can be perceived because the first body 10 does not completely cover the second body 20, so that a part of the region of the display can be regarded as the third region and the third region can be smaller than the first region 41 under appropriate circumstances.In addition, it should also be noted that, to explain the second mode in more detail, FIG. 12 shows the fourth region 44 covered only by the second body 20, but those skilled in the art may infer from the description and teaching of the above-described embodiments that the fourth region 44 may be covered by the connection body 30 (i.e., covered by the second body 20 and the connection body 30). In addition, as described above, the display 40 may be disposed on the first surface 100 of the first body 10 and the third surface 300 of the third body 30, or may be disposed on a first outer surface of the electronic device 1.FIGS. 13A and 13B are schematic diagrams illustrating the electronic device provided with a sensor in more detail. As described above with reference to FIGS. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 to 12, the electronic device according to the embodiments of the present disclosure has a plurality of different operation modes (such as the first mode, the second mode, and the third mode), and as illustrated in FIGS. 8A to 12, in different operation modes, the display 70 disposed on the electronic device is covered differently, thereby there are different exposed regions. Thus, multiple different operation modes of the electronic device may correspond to different operation modes, and different display content may be provided on the display 70 according to different operation modes.Therefore, the electronic device may further include a sensor (not shown) disposed in the first body 10 and / or the connection body 30 and / or the second body 20 and configured to detect a mode of the electronic device; and a processor (not shown) disposed in the first body 10 and / or the connection body 30 and / or the second body 20 and configured to control a mode change of the electronic device according to a mode detected by the sensor.Specifically, in an embodiment of the present disclosure, as illustrated in FIG. 13A, the sensor includes a light-sensitive sensor 80, the light-sensitive sensor 80 includes a light detection array that is disposed corresponding to a lighting array of the display 70 and is arranged to determine an exposed region of the display according to a region that satisfies a predetermined illuminance threshold in the light detection array, so that a mode of the electronic device is determined. The reason is that in various modes of the electronic device, the display is covered differently by the connection body 30 and / or the second body 20 and thereby has a different exposed region. Only the part disposed under the outer region of the light detection device detects an incidence of light satisfying the predetermined illuminance threshold, and the light detected by the other covered part of the light detection device does not satisfy the predetermined illuminance threshold. Therefore, the part that detects the light that satisfies the predetermined illuminance threshold of the light detection device corresponds to an exposed region of the display 70 in a current mode.In addition, the light-sensitive sensor 80 may further determine whether a size of the part that detects the light that satisfies the predetermined illuminance threshold of the light detection device gradually or abruptly increases. When the photosensitive sensor 80 determines that a size of the part that detects the light that satisfies the predetermined illuminance threshold of the light detection device gradually increases, it should be determined that the mode is switched with the first type. On the other hand, when the photosensitive sensor determines that the size of the part that detects the light that satisfies the predetermined illuminance threshold of the light detection device abruptly becomes larger, it should be determined that the mode is switched with the second type.In another embodiment of the present disclosure, as illustrated in FIG. 13B, the sensor includes a bend detection section 90 disposed in the connection body 30 and configured to determine a mode of the electronic device according to a state of the connection body 30. For example, the bending detection part unit 90 may be an angle sensor that detects a current bending angle of the connection body 30. By setting specific dimensions of the first body 10, the connection body 30, and the second body 20 in advance after the current bending angle of the connection body 30 is detected, it is possible to determine a current mode of the electronic device.In addition, the bending detection part unit 90 can further detect rotation of the rotation shafts included in the connection body 30. Specifically, as described above, the connection body 30 may include a plurality of rotating shafts. For example, when the bending detection part unit 90 detects that only some rotating shafts of the plurality of rotating shafts rotate while the remainder does not, and the rotating rotating shafts change in order (e.g., 311, 312, 313 at a current moment, 312, 313, 314 at a next moment), it should be determined that the mode is changed with the first kind. On the other hand, when the bending detection part unit 90 detects that all the rotating shafts of the plurality of rotating shafts rotate, it should be determined that the mode is switched to the second type.In addition, in an embodiment of the present disclosure, the processor includes a processor (not shown) that switches display content on the display according to a mode switching of the electronic device, and thereby adaptively provides the user with a display that is most suitable for a current mode of the electronic device.For example, in an example of the disclosure, during a switching operation between the first mode and the second mode of the electronic device according to the first embodiment as illustrated in FIGS. 2A-2C or the second embodiment as illustrated in FIGS. 4A-4C, in various modes as illustrated in FIGS. 8A and 8B, the display 70 disposed on the electronic device is covered differently, and thus forms exposed regions of different sizes. Specifically, as illustrated in FIG. 7A, in the first mode, the electronic device may have a smaller exposed region 701. Under the condition that the display 70 cannot be controlled according to the regions or can be gradually illuminated according to the regions, when the sensor detects that the electronic device switches from the first mode to the second mode, for example, when the sensor 80 detects, as illustrated in FIG. 8A, that a region satisfying a predetermined illuminance threshold in the light detection array gradually increases, or when the bend detection section 90 detects, as illustrated in FIG. 8B, that the bend angle of the connection body 30 changes, the processor may control the display content on the display 70 to remain unchanged, that is, during the mode switching operation, the processor may control the display 70 such that only the display region 701 remains illuminated and is displayed only on the display region 701. Once the sensor detects that the entire mode switching operation is completed, that is, once the electronic device is in the second mode, the electronic device has a larger exposed region 702. Then, the processor controls the display 70 to illuminate the entire exposed region 702 and display richer interface content on the entire display region 702. In an example of the disclosure, when the sensor detects that the entire mode switching operation is completed for a predetermined period of time, that is, when the sensor detects that the electronic device is in the second mode and the second mode has been held for a predetermined period of time, the processor controls the display 70 to illuminate and display the entire exposed region 702 on the entire display region 702. The predetermined time period may be a standard or set by the user according to requirements. For example, the predetermined time period may be set to 1 second.Also, when the sensor detects that the electronic device switches from the second mode to the first mode, the processor may first control the display content on the display 70 to remain unchanged, that is, during the mode switching operation, the processor may control the display 70 to keep the entire display region 702 illuminated and display it on the entire display region 702. Once the sensor detects that the entire mode switching operation is completed, that is, once the electronic device is in the first mode, the electronic device has only a smaller exposed region 701. Then, the processor controls the display 70 to illuminate only the exposed region 701 and to display only simple information and / or instant messages on the display region 701. In an example of the disclosure, when the sensor detects that the entire mode switching operation is completed for a predetermined period of time, that is, when the sensor detects that the electronic device is in the first mode and the first mode has been held for a predetermined period of time, the processor controls the display 70 to illuminate the smaller exposed region 701 and to display only simple information and / or instant messages on the display region 701.In another example of the present disclosure, the display 70 of the electronic device 1 may be controlled by the processor to display content according to the regions or to be gradually illuminated according to the regions. When the sensor detects that the electronic device switches from the first mode to the second mode, for example, when the sensor 80 detects, as illustrated in FIG. 8A, that a region satisfying a predetermined illuminance threshold in the light detection assembly gradually increases, or when the bending detection section 90 detects, as illustrated in FIG. 8B, that the bending angle of the connection body 30 changes, the area increase of the exposed region of the display on the first body 10 may be calculated from the position of the part of the light detection assembly satisfying the predetermined illuminance threshold, or from specific sizes of the first body 10, the connection body 30, and the second body 20 and the current bending angle of the connection body 30. Each time the sensor detects that the exposed region of the display on the first body has increased, the processor may control the display 70 of the first body to illuminate the current exposed region of the display 70, and the processor may control the display content on the display 70 to increase in abundance as the exposed region of the display 70 increases. When the sensor detects that the mode switching operation is completed, that is, the electronic device is in the second mode, the processor controls the display 70 to illuminate the entire exposed region 702 and display it on the entire display region 702. The predetermined area may be a standard or set by the user according to requirements. For example, the predetermined area may be set to 4 cm 2.Also, when the sensor detects that the electronic device switches from the second mode to the first mode, for example, when the sensor 80 detects, as illustrated in FIG. 8A, that a region satisfying a predetermined illuminance threshold in the light detection assembly gradually decreases, or when the bending detection section 90 detects, as illustrated in FIG. 8B, that the bending angle of the connection body 30 changes, an area decrease of the exposed region of the display on the first body 10 may be calculated from the position of the part of the light detection assembly satisfying the predetermined illuminance threshold, or from specific sizes of the first body 10, the connection body 30, and the second body 20 and current bending angle of the connection body 30. Each time the sensor detects that the exposed region of the display on the first body decreases, the processor may control the display 70 of the first body to illuminate the decreased exposed region of the display 70, and the processor may control the display content on the display 70 to become easier as the exposed region of the display 70 decreases. When the sensor detects that the mode switching operation is finished, that is, the electronic device is in the first mode, the electronic device has only a smaller exposed region 701. Then, the processor controls the display 70 to illuminate only the smaller exposed region 701 and to display only simple information and / or instant messages on the display region 701. As stated above, the predetermined area may be a standard or may be set by the user based on requirements.Next, various examples of switching the display content during mode switching will be described in detail.As a first example, it is assumed that in the second mode, the display 70 displays a third content. When the sensor detects that the electronic device 1 switches from the second mode to the first mode with the first manner as described above, the processor controls the display 70 to switch from a display of the third content to a display of a first content.Thus, as described above, since an area of a first uncovered portion of the display in the first mode is smaller than an area of a second uncovered portion of the display in the second mode, the first content that can be displayed in the first mode is certainly smaller than the second content that can be displayed in the second mode. Here, the first content is a part of the third content, and the first content is different from a first partial content of the third content, the first partial content is a content displayed in the second mode in the region where the first content is located. That is, although the first content is part of the third content, it is not simply a portion of the third content as such, but is a simplified recombination of corresponding points in the third content. That is, when changing from the second mode to the first mode with the first type, it is possible to switch the electronic device to a simpler operation mode.For example, FIG. 14A shows an example of the display content when the exposed region (i.e., the uncovered part) of the display 70 is large, while FIG. 14B shows another example of the display content when the exposed region (i.e., the uncovered part) of the display 70 is small, and as illustrated in FIGS. 14A and 14B, the third content may be a complete content including reproduction control keys (including reproduction, pause, forward travel, etc.), a playback history bar, texts, album cover, etc., and the first content may be a simplified content including only the reproduction control keys and the playback history bar. Of course, in the first content, a layout of the reproduction control keys and the reproduction history bar must be rearranged.It is usually understood that when the user switches from the second mode to the first mode with the first manner, there is a high possibility that the user wants to continue operating the electronic device, and thus, since a valid area that performs the display of the display is reduced, a display is switched to the simplified content display to facilitate further operation for the user.On the other hand, it is assumed that the display 70 displays the first content in the first mode. When the sensor detects that the electronic device 1 switches from the first mode to the second mode with the first manner as described above, the processor controls the display 70 to switch from a display of the first content to a display of the third content.As a second example, assuming that the display 70 displays a fourth content in the third mode, when the sensor detects that the electronic device 1 switches from the third mode to the first mode with the second manner as described above, the processor controls the display 70 to switch from the display of the fourth content to the display of a second content.Unlike the first content and the third content are relevant in the first example, in the second example, the second content is a predetermined content and the second content is irrelevant to the fourth content. Switching from the third mode to the first mode with the second type may switch the electronic device to an operating mode having lower power consumption and / or fewer operating procedures. For example, FIG. 14A shows an example of the display content when the exposed region (i.e., the uncovered part) of the display 70 is large, while FIG. 14C shows another example of the display content when the exposed region (i.e., the uncovered part) of the display 70 is small. As shown in FIGS. 14A and 14C, the fourth content may also be a full content including reproduction control keys (including reproduction, pause, forward travel, etc.), a playback history bar, texts, album covers, etc., and the second content may be a screen lock interface.It is conventionally known that when the user changes the second mode to the third mode with the second manner, there is a high possibility that the user desires to stop operating the electronic device, so that the electronic device is directly switched to a screen lock mode and the display displays a screen lock interface to effectively reduce power consumption.On the other hand, assuming the first mode, the display 70 displays the second content. When the sensor detects that the electronic device 1 switches from the first mode to the third mode with the second manner as described above, the processor controls the display 70 to switch from the display of the second content to the display of the fourth content.Previously, situations of switching between the first mode and the second mode with the first type and switching between the first mode and the third mode with the second type have been shown with two independent examples. However, it is also possible to combine the first example and the second example, that is to say, in one example, both situations, the change between the first mode and the second mode with the first type and the change between the first mode and the third mode with the second type are included.As a third example, in the second mode, it is assumed that the display 70 displays a fifth content. When the sensor detects that the electronic device 1 switches from the first mode to the second mode with the first manner as described above, the processor controls the display 70 to switch from a display of the fifth content of the first disclosure to a display of a sixth content of the first application. And assuming the third mode, the display 70 displays a seventh content of the first application. In the third example, the focus should be on the display content being different when switching to the first mode with different types (the first type or the second type) in a case where the same application is displayed in the first mode and the third mode. Here, it should be noted that since the area of the second uncovered part of the display in the second mode is smaller than the area of the third uncovered part of the display in the third mode, thus even if the same application is displayed in the second mode and third mode, the contents of the same application will be slightly different. Therefore, above, the two are differentiated with the fifth content of the first application and the seventh content of the first application. When the detection unit detects that the electronic device 1 having the second type switches from the third mode to the first mode, the processor controls the display 70 to switch from the display of the seventh content of the first application to the display of an eighth content of a non-first application, the eighth content of a non-first application being irrelevant to the seventh content of the first application. For example, the eighth content of a non-first application may be a screen lock interface.In this way, when the user switches from the second mode to the first mode with the first manner, there is a high possibility that the user wants to further operate the electronic device, and when the user switches from the third mode to the first mode with the second manner, there is a high possibility that the user wants to no longer operate the electronic device, thus the processor is configured to switch the display content from the fifth content of the first application to the sixth content when switching from the second mode to the first mode with the first manner, the sixth content and the fifth content being relevant so that further operation is facilitated for the user, and the processor is configured to switch the display content from the seventh content of the first application to the eighth content of a non-first application, when switching from the third mode to the first mode with the second manner, so that reduction in power consumption is effectively facilitated.The sixth content of the first application can subsequently be generated in two ways. Similar to the first example described above, the sixth content of the first application may be a part of the fifth content of the first application, but unlike a first partial content of the fifth content, the first partial content is content displayed in the second mode in the region where the fifth content is located. That is, the sixth content of the first application may be partially the same as the fifth content of the first application.In addition, the sixth content of the first application can alternatively be generated on the basis of the fifth content of the first application, wherein the sixth content differs from the fifth content. For example, the first application is a shopping application, and the fifth content of the first application in the second mode is commodity information. When the electronic device switches from the second mode to the first mode with the first manner, the displayed sixth content of the first application is bar codes corresponding to the commodity.Thus, it can be seen that after changing with the first type, the sixth content can be the same as or completely different from the fifth content. However, the sixth content and the fifth content are relevant regardless of whether the two are the same or not. In contrast, after switching with the second type, the eighth content and the seventh content are not the same and are irrelevant.As a fourth example, it is assumed that in the second mode, the display 70 displays the fifth content of the first application. The processor is further configured to determine a type of the first application, and based on the type of the first application, the processor controls content displayed after a transition.Specifically, when the sensor detects that the electronic device 1 switches from the second mode to the first mode, when the processor further determines that the type of the first application is a continuous type such as music player, navigation, and other applications, the processor controls the display 70 to display a sixth content of the first application, the sixth content is a part of the fifth content, and is different from a first partial content of the fifth content, the first partial content is content displayed in the second mode in the region where the fifth content is located. For example, the processor further determines that the type of the first application is a continuous type, then the processor controls to display a simplified interface of the first application, and a portion of the complete content is selected for display in the simplified interface. For example, the first application is a music player, after changing from the second mode to the first mode, the first content changes to a part of the content selected from a complete content of the reproduction control keys (including reproduction, pause, forward travel, etc.), a reproduction history bar, texts, album covers, etc., such as reproduction control keys and reproduction history bars. Alternatively, the processor may also control the display 70 to display sixth content of the first application, the sixth content is generated from the first content, and is different from the fifth content. For example, if the processor determines that the type of the first application is a continuous type, the processor may also generate a simplified interface of the first application again. For example, the first application is a navigation application, after a change from the second mode to the first mode, the first content changes to arrow navigation, the arrow navigation here being completely different than a previously displayed full navigation content.On the other hand, when the processor determines that the type of the first application is a non-continuous type, the processor controls the display 70 to display an eighth content of a non-first application, wherein the eighth content of a non-first application is irrelevant to the fifth content of the first application. For example, if the processor determines that the type of the first application is a discontinuous type, the processor controls the display 70 to display a screen lock interface.In this way, when the user changes the second mode to the first mode in a case where the currently running application is a continuous type application, there is a high possibility that the user wants to continue operating the electronic device 1, and when the user changes the second mode to the first mode in a case where the currently running application is not a continuous type application, there is a high possibility that the user wants to no longer operate the electronic device, so that the processor is configured to change the display content from the fifth content of the first application to the sixth content when the currently running application is a continuous type application, the sixth content and the fifth content being relevant, so that further operation is facilitated for the user, The processor is configured to switch the display content from the fifth content of the first application to the eighth content of a non-first application when switching from the second mode to the first mode in the case where the currently running application is not a continuous type application, so that a reduction in power consumption is effectively facilitated.As a fifth example, it is assumed that in the second mode, the display 70 displays the fifth content of the first application. Unlike the processor further configured to determine a type of the first application in the fourth example, in the fifth example, the processor is configured to determine a type of an operation currently being executed, and based on the type of an operation currently being executed, the processor controls content displayed after a transition. That is, even if the type of application that is currently running is a continuous type application but no continuous type operation (such as playing music, performing navigation, and other operations) is currently being executed, the display is still switched to the eighth content of a non-first application.Specifically, when the sensor detects that the electronic device 1 switches from the second mode to the first mode, when the processor further determines that the operation mode is a continuous type such as reproduction of music, execution of navigation, and other operations, the processor controls the display 70 to display a sixth content of the first application, the sixth content is a part of the fifth content, and is different from a first partial content of the fifth content, the first partial content is a displayed content in the second mode in the region where the fifth content is located. For example, the processor further determines that the mode of operation is a continuous type, then controls the processor to display a simplified interface of the first application. Alternatively, the processor may also control the display 70 to display a sixth content of the first application, the sixth content is generated from the fifth content, and is different from the fifth content. For example, if the processor determines that the type of first operation is a continuous type, the processor may also generate a simplified interface of the first application again.On the other hand, if the processor determines that the mode is a non-continuous type, the processor controls the display 70 to display eighth content of a non-first application, where the eighth content of a non-first application is irrelevant to the fifth content of the first application. For example, if the processor determines that the mode is a non-continuous type, the processor controls the display 70 to display a screen lock interface.In this way, when the user changes the second mode to the first mode, when the type of operation currently being executed is a continuous type, there is a high possibility that the user wants to continue operating the electronic device 1, and when the user changes the second mode to the first mode, when the type of operation currently being executed is a non-continuous type, there is a high possibility that the user wants to stop operating the electronic device, and thus the processor is configured to change the fifth content of the first application to the sixth content, when the type of operation currently being executed is a continuous type, the sixth content and the fifth content are relevant, so that another operation is facilitated for the user, The processor is configured to switch the fifth content of the first application to the eighth content of a non-first application when the second mode is switched to the first mode when the type of operation currently being executed is a non-continuous type, so that a reduction in power consumption is effectively facilitated.FIG. 15 is a first flowchart illustrating a mode switching method according to an embodiment of the present disclosure. As illustrated in FIG. 15, a first example of the mode switching method according to an embodiment of the present disclosure includes the steps listed below.In step S 1501, a mode of the electronic device is detected. As above, the electronic device comprises: a first body having a first end and a second end; a connection body having a third end and a fourth end, the third end being connected to the second end; a second body having a fifth end and a sixth end, the fifth end being connected to the fourth end, the second body being movable relative to the first body by means of the connection body; wherein the electronic device has at least a first rotation mode and a second rotation mode: in the first rotation mode, the electronic device is capable of performing a relative rotation between a first part and a second part, a rotation axis being located at a first position of the connection body, the first part comprising the first body and a first connection part body; the second part comprising the second body and a second connection part body; the first connection part body and the second connection part body are formed by dividing the connection body at the first position; and in the second rotation mode, the electronic device is capable of performing relative rotation between a third part and a fourth part with a rotation axis at a second position of the connection body, the third part including the first body and a third connection part body; the fourth part including the second body and a fourth connection part body; the third connection part body and the fourth connection part body are formed by dividing the connection body at the second position. The electronic device has a first mode and a second mode, in the first mode, the electronic device rotates in the first rotation mode, and a maximum distance between corresponding points of the first body and the second body is less than a first predetermined threshold; in the second mode, the electronic device rotates in the second rotation mode, and a maximum distance between corresponding points of the first body and the second body is less than a first predetermined threshold.The mode of the electronic device may be detected by a sensor arranged in the first body and / or in the connection body and / or in the second body. Thereafter, the process proceeds to step S 1502.In step S 1502, a mode change of the electronic device is controlled according to a detected mode. Thereafter, the process proceeds to step S 1503.In step S 1503, a display content on a display of the electronic device is changed according to a mode change of the electronic device.FIG. 16 is a second flowchart illustrating a mode switching method according to an embodiment of the present disclosure. As illustrated in FIG. 16, a first example of the mode switching method according to an embodiment of the present disclosure includes the following steps.In step S 1601, a mode change and / or a mode change mode of an electronic device is detected. As described above, the electronic device includes: a first body; a connection body; and a second body connected to the first body through the connection body; the electronic device has at least three modes due to the connection body, in a first mode, the first body and the second body have a first relative positional relationship, in a second mode, the first body and the second body have a second relative positional relationship, and in a third mode, the first body and the second body have a third relative positional relationship, wherein the first relative positional relationship, the second relative positional relationship, and the third positional relationship are different from each other; and the electronic device can switch from the second mode to the first mode with a first type and switch from the third mode to the first mode with a second type. The first type and the second type are different. The mode of the electronic device may be detected by a sensor arranged in the first body and / or in the connection body and / or in the second body. Thereafter, the process proceeds to step S 1602.In step S 1602, a mode change of the electronic device is controlled according to a detected mode change or a detected mode change mode. Thereafter, the process proceeds to step S 1603.In step S 1603, a display content on a display of the electronic device is changed according to a mode change of the electronic device.As a first example, it is assumed that in the second mode, the display 70 displays the third content. When it is detected that the electronic device 1 switches from the second mode to the first mode with the first manner as described above, the display 70 is controlled to switch from the display of the third content to display a first content.Thus, as described above, since the area of a first uncovered portion of the display in the first mode is smaller than an area of a second uncovered portion of the display in the second mode, the first content that can be displayed in the first mode is certainly smaller than the third content that can be displayed in the second mode. Here, the first content is a part of the third content, and the first content is different from a first partial content of the third content, the first partial content is a content displayed in the second mode in the region where the first content is located. That is, although the first content is part of the third content, it is not simply a portion of the third content as such, but is a simplified recombination of corresponding points in the third content.On the other hand, it is assumed that in the first mode, the display 70 displays the first content. When it is detected that the electronic device 1 switches from the first mode to the second mode with the first manner as described above, the display 70 is controlled to switch from the display of the first content to the display of the third content.As a second example, it is assumed that in the third mode, the display 70 displays fourth content when it is detected that the electronic device 1 switches from the third mode to the first mode with the second manner as described above, the display 70 is controlled to switch from the display of the fourth content to the display of the second content.Unlike the first content and the third content are relevant in the first example, in the second embodiment, the second content is a predetermined content and the second content is irrelevant to the fourth content.On the other hand, it is assumed that in the first mode, the display 70 displays the second content. When it is detected that the electronic device 1 switches from the first mode to the third mode with the second manner as described above, the display 70 is controlled to switch from the display of the second content to the display of the fourth content.As a third example, it is assumed that in the second mode, the display 70 displays the fifth content. When it is detected that the electronic device 1 switches from the second mode to the first mode with the first manner as described above, the display 70 is controlled to switch from a display of the fifth content to a display of a sixth content of the first application. And it is assumed that in the third mode, the display 70 displays a seventh content of the first application. In the third example, the focus should be on the display content differing when switching to the first mode in different ways (the first way or the second way) in a case where the same application is displayed in the second mode and the third mode. Here, it should be noted that since the area of the second uncovered part of the display in the second mode is smaller than the area of the third uncovered part of the display in the third mode, the content of the same application is slightly different even if the same application is displayed in the second mode and the third mode. Therefore, the two with the fifth content of the first application and the seventh content of the first application are distinguished above. When it is detected that the electronic device 1 switches from the third mode to the first mode with the second manner as described above, the display 70 is controlled to switch from a display of the seventh content of the first application to a display of the eighth content of a non-first application, the eighth content of a non-first application being irrelevant to the seventh content of the first application. For example, the eighth content of a non-first application may be a screen lock interface.As a fourth example, it is assumed that in the second mode, the display 70 displays the fifth content of the first application. The mode switching method further includes determining a type of the first application, and content displayed after switching is controlled based on the type of the first application.On the other hand, when it is determined that the type of the first application is a non-continuous type, the display 70 is controlled to display eighth content of a non-first application, the eighth content of a non-first application being irrelevant to the fifth content of the first application. For example, when it is determined that the type of the first application is a discontinuous type, the display 70 is controlled to display a screen lock interface.As a fifth example, it is assumed that in the second mode, the display 70 displays the fifth content of the first application. Unlike further determining a kind of the first application in the fourth example, in the fifth example, the mode switching method further includes determining a kind of an operation currently being executed, and content displayed after switching is controlled based on the kind of an operation currently being executed.On the other hand, when it is determined that the operation mode is a non-continuous type, the display 70 is controlled to display an eighth content of a non-first application, the eighth content of a non-first application being irrelevant to the fifth content of the first application. For example, when it is determined that the operation mode is a non-continuous type, the display 70 is controlled to display a screen lock interface.Hereinafter, an electronic device and an information processing method thereof according to a third embodiment of the present disclosure will be further described in detail with reference to FIGS. 17, 18 to 19.As illustrated in FIG. 17, the electronic device according to the third embodiment of the present disclosure includes: a first body 10 having a first surface and a second surface that are opposite to each other; a connection body 30 having a first surface and a second surface that are opposite to each other; and a second body 20 having a first surface and a second surface that are opposite to each other and connected to the first body through the connection body; wherein the electronic device has a first outer surface and a second outer surface, the first outer surface includes a first surface of the first body, a first surface of the connection body, and a first surface of the second body, the second outer surface includes a second surface of the first body, a second surface of the connection body, and a second surface of the second body.In addition, as illustrated in FIG. 17, the electronic device according to the third embodiment of the present disclosure further includes: a first display 40 disposed at least in a part of the region of the first outer surface of the electronic device, illustrated in solid line in FIG. 17.Specifically, in the first example, the first display may be disposed in the entire first outer surface, that is, over three parts: the first surface of the first body, the first surface of the connection body, and the first surface of the second body. In a second example, the first display may be disposed in a portion of the region of the first outer surface, for example, over at least a portion of the first surface of the first body and the first surface of the connection body. Of course, as will be apparent to those skilled in the art, the first display may be disposed only on the first surface of the first body.It should be noted that in a case where the first display is arranged over two bodies or three bodies, in the first example, the first display may include two or three display screens, respectively, with the respective display screens arranged closely to each other. In the second example, the first display may include only an entire piece of display screen.In addition, the electronic device in this embodiment of the present disclosure has at least two modes, which will be described as a second mode and a third mode, respectively. In the second mode, a second region of the first display may be perceived by a viewer. In the third mode, a third region of the first display may be perceived by a viewer. The third region is larger than the second region.Specifically, a surface composed of the first surface of the first body and the first surface of the connection body is covered by the second body in the second mode, and a second uncovered part of the first body corresponds to the second region. That is, the second region that can be perceived by a viewer is an exposed region of the first display in this case. In the third mode, the first surface of the first body is uncovered. An angle between the first body and the second body is larger than a threshold, the threshold can be arbitrarily set as necessary by those skilled in the art, and the present disclosure does not impose any limitation. For example, the threshold is greater than 120 degrees. As another example, the threshold is greater than 150 degrees. That is, in the third mode, an obtuse angle is formed between the first body and the second body, which is even approximately 180 degrees, that is, the plane formed by the first body and the second body is approximately flat. In addition, the first outer surface corresponds to the third region. Also, the third region that can be perceived by the viewer is, in this case, an exposed region of the first display.In addition, the electronic device may further have a first mode. In the first mode, a first region of the first display may be perceived by a viewer, and a surface comprised of the first surface of the first body and the first surface of the connection body is covered by the second body, and a first uncovered part of the first body corresponds to the first region. The display control unit described below is for controlling display of a first interface in the first region in the first mode.In addition, the first mode and the second mode may be switched by a manner that keeps a distance between the sixth end and the first surface below the first predetermined threshold.In addition, as illustrated in FIG. 17, the electronic device in this embodiment of the present disclosure further includes a display control unit (not illustrated). The display control unit may be disposed in each of the first body, the second body, and the connection body. Specifically, the display control unit is for controlling to display a third interface in a third region in the third mode. The third interface comprises at least a first partial interface and a second partial interface. In addition, the display control unit is further for controlling to display a second interface in the second region in the second mode, the second interface includes only a third sub-interface. In other words, unlike the third interface, which comprises at least two sub-interfaces, the second interface consists of a single sub-interface. The second interface and the third interface will be described in detail later with reference to specific examples.In addition, in this embodiment of the present disclosure, the electronic device may further include a first sensor (not illustrated). The first sensor is for sensing a parameter indicative of a mode of the electronic device so that a corresponding trigger signal is generated. Specifically, in the first example, the first sensor includes a light-sensitive sensor, the light-sensitive sensor includes a light detection array disposed corresponding to a lighting array of the display, and is configured to determine an exposed region of the display according to a region satisfying a predetermined illuminance threshold in the light detection array as a parameter indicating a mode of the electronic device. In a second example, the first sensor includes a bending detection unit disposed in the connection body and configured to determine a bending state of the connection body as a parameter indicating a mode of the electronic device.Therefore, in response to a trigger signal generated by the first sensor and indicating that the electronic device changes from the second mode to the third mode, the display control unit changes from the second interface to the third interface, or in response to a trigger signal indicating that the electronic device changes from the third mode to the second mode, the display control unit changes from the third interface to the second interface.Hereinafter, various scenarios of the electronic device in the third embodiment of the present disclosure will be described in detail.In a first scenario, the electronic device is in the second mode and the second interface is displayed in the second region of the first display. The second interface is a chat interface of a chat application. Accordingly, when the first sensor detects that the electronic device switches from the second mode to the third mode, the display control unit switches the second interface to the third interface. The third interface is another interface of the chat application different from the chat interface, such as a sharing interface that displays a map and a sharing position. The sharing interface can have a first partial interface and a second partial interface. The first sub-interface is, for example, an operating region for participating and leaving a sharing. The second sub-interface is, for example, a common region where common content is displayed. That is, in the first scenario, a first invoked interface of a certain application is displayed in the second mode. When the electronic device switches from the second mode to the third mode, a second invoked interface of the same application different from that of the first invoked interface is displayed. Therefore, the user can practically switch between multiple interfaces of an application, thereby fully utilizing various functions of the application, improving the user's experience.In a second scenario, the electronic device is in the second mode and the second interface is displayed in the second region of the first display. The second interface is a chat interface of a chat application. Accordingly, when the first sensor detects that the electronic device switches from the second mode to the third mode, the display control unit switches the second interface to the third interface. The third interface is another interface of the chat application, such as an extended chat interface. The enhanced chat interface may have a first sub-interface and a second sub-interface. The first sub-interface corresponds to a chat interface in the second mode, for example. The second sub-interface is, for example, a common interface for sharing. That is, in the second scenario, a first invoked interface of a certain application is displayed in the second mode. When the electronic device switches from the second mode to the third mode, a second invoked interface of the same application is displayed and the first sub-interface in the second invoked interface corresponds to the first invoked interface. Therefore, the user can practically switch between multiple interfaces of an application, the interfaces before and after the switching have functional continuity, thereby improving the user's experience.In a third scenario, the electronic device is in the second mode and the second interface is displayed in the second region of the first display. The second interface is a chat interface of a chat application. Accordingly, when the first sensor detects that the electronic device switches from the second mode to the third mode, the display control unit switches the second interface to the third interface. The third interface is an interface of another application different from that of the chat application, such as an interface of a navigation application. The interface of the navigation application may have a first sub-interface and a second sub-interface. The first sub-interface is, for example, a real-view navigation interface. The second partial interface is, for example, a planar map navigation interface. That is, in the third scenario, a first invoked interface of a certain application is displayed in the second mode. When the electronic device switches from the second mode to the third mode, a second invoked interface of another application is displayed. Therefore, the user can practically switch between multiple applications without leaving one application, thereby improving the user's experience.In a fourth scenario, the electronic device is in the second mode and the second interface is displayed in the second region of the first display. The second interface is a chat interface of a chat application. Accordingly, when the first sensor detects that the electronic device switches from the second mode to the third mode, the display control unit switches the second interface to the third interface. The third interface has a first sub-interface and a second sub-interface. The first sub-interface is, for example, an interface of another application different from the chat application, such as a navigation interface. The second sub-interface is, for example, an interface of another application different from the chat application, such as a memo interface. That is, in the fourth scenario, a first invoked interface of a certain application is displayed in the second mode. When the electronic device switches from the second mode to the third mode, a second invoked interface is displayed that includes application interfaces of two applications that are different from the above application. Therefore, the user can practically switch between multiple applications without leaving one application, thereby improving the user's experience.It should be noted that the above-mentioned multiple scenarios involving a change from the second mode to the third mode have been described above as an example. As will be apparent to those skilled in the art, the above scenarios may also be applied in the case of a transition from the third mode to the second mode.Additionally, it should be noted that in the various scenarios, layout, display direction, and size of corresponding interfaces described above, may be configured in various ways.In the first example, a layout between the first sub-interface and the second sub-interface may be configured as follows. Specifically, when the electronic device switches from the second mode to the third mode, the display control unit may control to display the first sub-interface in the second region corresponding to the second mode and display the second sub-interface in the region other than the second region in the third region. This is advantageous in particular in the second scenario described above. That is, the interfaces before and after the switching have not only functional continuity but the interfaces before and after the switching have display continuity, which further improves the user's experience.In the second example, a display direction of the display interface may be determined with reference to a mode of the electronic device. That is, even when the electronic device includes a sensor such as a gravity sensor and has a function for adaptively changing a display direction, it is also possible to determine whether this function is enabled according to a mode of the electronic device. Specifically, in this example, the electronic device may further include a second sensor configured to detect a space movement parameter of the electronic device. The second sensor is, for example, a gravity sensor, an acceleration sensor, and other sensors. The space movement parameter is, for example, an acceleration of the electronic device and other parameters. When the electronic device is in the second mode, the display control unit does not respond to the space movement parameter to change the direction of the second interface. On the other hand, when the electronic device is in the third mode, the display control unit responds to the space movement parameter to change the display direction of the third interface. That is, in this example, when the electronic device is in the second mode, the display direction of the electronic device is "locked", and it can also be understood that the function that the electronic device adaptively changes the display direction according to the space motion parameter is disabled. When the electronic device is in the third mode, the display direction of the electronic device is not "locked", and it can also be understood that the function that the electronic device adaptively changes the display direction according to the space motion parameter is enabled.In a third example, based on the second example described above, the electronic device may further determine a layout of the first sub-interface and the second sub-interface in the third mode according to the space motion parameters. Specifically, in this example, in the third mode, the processor displays the first sub-interface and the second sub-interface vertically arranged in response to a first space movement parameter indicating that the electronic device is horizontal; the processor displays the first sub-interface and the second sub-interface horizontally arranged in response to a first space movement parameter indicating that the electronic device is horizontal. Therefore, a layout of the first sub-interface and the second sub-interface in the third mode can be controlled according to the space movement parameter of the electronic device to better conform to the user's habits, thereby improving the user's experience.In addition, the electronic device further includes: a first input unit disposed at least in a second surface of the second part; a second display disposed at least in a second surface of the second body; wherein the first input unit and the second display disposed at least in a second surface of the second part are stacked. In the second mode, a character string (e.g., a virtual keyboard) is displayed on the second display, each position of the character string displays a corresponding input character when the user performs a touch input, the processor determines a corresponding character in response to a click input operation at the first input unit, and the character is displayed in the second interface. Therefore, in the second mode, the user can easily execute a character input operation in a case where the display direction of the electronic device is "locked", thereby increasing input efficiency, thereby improving the user's experience.FIGS. 18A and 18B are schematic diagrams illustrating a display of the electronic device according to the third embodiment of the present disclosure.As shown in FIG. 18A, the electronic device is in a second mode. In the second mode, a surface comprised of the first surface of the first body and the first surface of the connection body is covered by the second body in the second mode, and a second uncovered part of the first body corresponds to the second region. A chat interface of a chat application is displayed in the second region.In addition, when a second display is also disposed in the second surface of the second body to form a touch display, as illustrated in FIG. 18B, a character string (e.g., a virtual keyboard) is displayed on the touch display, each position of the character string indicates a corresponding input character when the user performs a touch input. In this case, when a click input operation is received on the virtual keyboard through the touch display, the processor may determine a corresponding character and the character is displayed in the first display. That is, in the second mode, the user can execute an input operation such as editing characters.In this case, when the first sensor detects that the electronic device switches from the second mode to the third mode and generates a corresponding trigger signal, the display control unit switches the second interface to the third interface in response to the trigger signal, as illustrated in FIG. 18B. In FIG. 18B, the electronic device not only switches from the second mode to the third mode, but also switches from the vertical direction to the horizontal direction. Thus, the display interface comprising the first sub-interface and the second sub-interface is displayed in the third region and the third region is displayed horizontally, wherein the first sub-interface and the second sub-interface are displayed horizontally arranged.The electronic device according to the third embodiment of the present disclosure is described above with reference to FIGS. 17 and 18. The electronic device includes the first body and the second body connected by the connection body, a display is disposed on the first surface of the first body, and another region of the display is perceived by a viewer in another mode of the electronic device, thereby providing a new product form including at least two modes, thereby enriching a selection for a user and improving the experience of the user.Further, in the electronic device according to the third embodiment of the present disclosure, a corresponding interface may be displayed according to a mode in which the electronic device is located, so that the display content of the electronic device matches its mode, thereby facilitating observation and use by the user, increasing operation efficiency, and further improving experience of the user.Next, a display processing method according to the third embodiment of the present disclosure will be described with reference to FIG. 19. The display processing method according to the third embodiment of the present disclosure may be applied to an electronic device. The electronic device comprises: a first body 10 having a first surface and a second surface that are opposite to each other; a connection body 30 having a first surface and a second surface that are opposite to each other; and a second body 20 having a first surface and a second surface that are opposite to each other and connected to the first body through the connection body; wherein the electronic device has a first outer surface and a second outer surface, the first outer surface comprises a first surface of the first body, a first surface of the connection body, and a first surface of the second body, the second outer surface comprises a second surface of the first body, a second surface of the connection body, and a second surface of the second body; a first display is disposed at least in a portion of a region of the first exterior surface of the electronic device, the electronic device having at least two modes, a second mode and a third mode, respectively. In the second mode, a second region of the first display may be perceived by a viewer. In the third mode, a third region of the first display may be perceived by a viewer. The third region is larger than the second region.As illustrated in FIG. 19, first, in step S 1910, a parameter indicating a mode of the electronic device is acquired.Thereafter, in step S 1920, it is determined whether the electronic device is in the second mode or the third mode based on the parameter.When it is determined that the electronic device is in the third mode, the process proceeds to step S 1930, a third interface is displayed in the third region, the third interface has a first sub-interface and a second sub-interface.In an embodiment, the display processing method further includes: when it is determined that the electronic device is in the second mode, a second interface is displayed in the second region, the second interface has only a third sub-interface; a first trigger signal indicating that the electronic device switches from the second mode to the third mode is received; a first display switching signal is generated in response to the first trigger signal; and a second interface is displayed in the second region, the second interface includes only the third sub-interface in response to the first display switching signal.In another embodiment, the display processing method further includes: when it is determined that the electronic device is in the third mode, a third interface is displayed; a second trigger signal indicating that the electronic device switches from the third mode to the second mode is received; a second display switching signal is generated in response to the second trigger signal; and a second interface is displayed in the second region, the second interface includes only the third sub-interface in response to the second display switching signal.In another embodiment, when it is determined that the electronic device is in the second mode, the second interface is displayed in the second region, the second interface includes only the third sub-interface, the display processing method further includes: acquiring a space motion parameter of the electronic device; in the second mode, the direction of the second interface is not changed in response to the space motion parameter; in the third mode, the direction of the second interface is changed in response to the space motion parameter.In another embodiment, the electronic device further has a first mode. In the first mode, a first region of the first display may be perceived by a viewer, and a surface comprised of the first surface of the first body and the first surface of the connection body is covered by the second body, and a second uncovered part of the first body corresponds to the first region. The display processing method further includes: determining whether the electronic device is in the first mode, the second mode, or the third mode based on the above-mentioned parameter; and when the electronic device is in the first mode, controlling the first interface to be displayed in the first region.The display processing method according to the third embodiment of the present disclosure is described above with reference to FIG. 19. In the display processing method according to the third embodiment of the present disclosure, a corresponding interface may be displayed according to a mode in which the electronic device is located, so that the display content of the electronic device matches its mode, thereby facilitating viewing and use by the user, increasing operation efficiency, and further improving experience of the user.Hereinafter, the electronic device according to a fourth embodiment of the present disclosure of an information processing method thereof will be described with reference to FIGS. 20, 21 to 22.FIG. 20 is a block diagram schematically showing a structure of the electronic device according to a fourth embodiment of the present disclosure. As illustrated in FIG. 20, the electronic device according to the fourth embodiment of the present disclosure includes: a first body 10 having a first surface and a second surface that are opposite to each other; a connection body 30; and a second body 20 having a first surface and a second surface that are opposite to each other and connected to the first body through the connection body; a first display 40 disposed at least in the first surface of the first body; a first input unit 25 disposed at least in the second surface of the second body; wherein the electronic device has a first outer surface and a second outer surface, the first outer surface includes the first surface of the first body and the first surface of the second body, the second outer surface includes the second surface of the first body and the second surface of the second body.Optionally, the first body has a first end and a second end; the connecting body has a third end and a fourth end, the third end is connected to the second end; the second body has a fifth end and a sixth end, the fifth end is connected to the fourth end, the second body is capable of rotating relative to the first body at least due to the connecting body.In addition, the electronic device may have at least a first mode in which a first surface of the first body is covered by the connection body and the second body, and a second mode in which a surface consisting of the first surface of the first body and a first surface of the connection body is covered by the second body.In addition, the electronic device may further have a third mode. In the third mode, the first surface of the first body is uncovered. An angle between the first body and the second body is larger than a threshold value that can be arbitrarily set as necessary by those skilled in the art, and the present disclosure is not limited. For example, the threshold is greater than 120 degrees. As another example, the threshold is greater than 150 degrees. That is, in the third mode, an obtuse angle is formed between the first body and the second body, which may even be approximately 180 degrees, that is, the plane formed by the first body and the second body is approximately flat.In addition, as illustrated in FIG. 20, the electronic device according to the fourth embodiment of the present disclosure further includes: a first display 40 disposed at least in the first surface of the first body illustrated in full lines in FIG. 20. The first display is disposed at least in the first surface of the first body. It should be noted that although in FIG. 20 the first display is shown disposed in a part of the region of the first surface of the first body, it may actually be disposed in the entire region of the first surface of the first body. In addition, in the first example, the first display may be disposed in only the first surface of the first body. In the second example as described above, the connection body also has a first body and a second body that are opposed to each other, and the first display may be disposed at least in a part of the first surface of the first body and the first surface of the connection body. In other words, the first display may be disposed over two bodies: the first body and the connection body. In the third example, the first display may be disposed in the first surface of the first body, the first surface of the connection body, and the first surface of the second body. In other words, the first display may be disposed over three bodies: the first body, the connection body, and the second body.It should be noted that in the case where the first display is arranged over two bodies or three bodies, in the first example, the first display may include corresponding two or three display screens, the corresponding display screens being arranged closely adjacent to each other. In the second example, the first display may include only an entire piece of display screen.In addition, as illustrated in FIG. 20, the electronic device according to the fourth embodiment of the present disclosure further includes: a first input unit 25 disposed at least in the second surface of the second body, illustrated in broken line in FIG. 20 ; it should be noted that although in FIG. 20, the first input unit is illustrated disposed in a part of the region of the second surface of the second body, it may be actually disposed in the entire region of the second surface of the second body. The first input unit may be, for example, a touch control unit such as a touch panel. Specifically, in the first example, the first input unit may be disposed only in the second surface of the second body. In the second example, the first input unit may be disposed at least in a part of the second surface of the second body and the second surface of the connection body. In other words, the first input unit may be disposed over two bodies: the first body and the connection body. In the third example, the first input unit may be disposed in the second surface of the first body, the second surface of the connection body, and the second surface of the second body. In other words, the first input unit may be disposed over three bodies: the first body, the connection body, and the second body.Also, it should be noted that in the case where the first input unit is disposed over two bodies or three bodies, the first input unit may include corresponding two or three touch panels, or the first input unit may include only an entire piece of a touch panel.In addition, the electronic device may optionally further include: a second display disposed at least in the second surface of the second body. Likewise, the second display may be disposed only in the second surface of the second body, or disposed in the second surface of the first body and the second surface of the first connection body, or disposed in the second body of the first body, the second surface of the connection body, and the second surface of the second body.It should be noted that, regardless of the arrangement, the first input unit and the second display disposed on the second surface of the body may be configured in a stack shape. That is, in the case that the first input unit is a touch control unit, it is possible to establish a touch display on the second surface of the second body.In addition, the electronic device may optionally further include: a second input unit disposed at least in the first surface of the first body. Likewise, the second input unit may be arranged only in the first surface of the first body, or may be arranged only in the first surface of the first body and the first surface of the connection body, or may be arranged in the first surface of the first body, the first surface of the connection body, and the first surface of the second body.It should also be noted that, regardless of the arrangement, the second input unit and the first display disposed on the first surface of the body may be configured in a stack shape. That is, in the case that the second input unit is a touch control unit, it is possible to establish a touch display on the first surface of the first body. And it should be noted that, when the second input unit and the first display are configured in a stack shape, the first display does not interfere with the acceptance and input of the second input unit, the second input unit does not influence the perception of the first display by a viewer.In addition, in the fourth embodiment of the present disclosure, as described above, the electronic device may have at least a first mode and a second mode. In the first mode, the first body and the second body have a first relative positional relationship. In a second mode, the first body and the second body have a second relative positional relationship. In the first mode, a first covered part of the first display and the first input unit face in the same direction. In the second mode, a second uncovered part of the first display and the first input unit point in the same direction. An area of a first uncovered portion of the display is different from the area of a second uncovered portion of the display. For example, the area of the first uncovered part is smaller than the area of the second uncovered part.In addition, the electronic device according to the fourth embodiment of the present disclosure may further include a processor. Therefore, in the first mode, the processor may respond to an input of the first input unit by an instruction in a first instruction set. In the second mode, the processor may be responsive to an input of the first input unit by an instruction in a second instruction set. The first instruction set and the second instruction set are at least partially different.Specifically, the processor may include a display control unit configured to control a change in display content on the first display in response to an input to the first input unit.Specifically, in the first mode, the display control unit may change the display content on the first display in response to a swiping input operation on the first input unit. On the other hand, in the second mode, the display control unit may change a corresponding character in response to a click input operation on the first input unit and display the character on the first display.In addition, the electronic device according to the fourth embodiment of the present disclosure may further include a first sensor. The first sensor is configured to sense a parameter indicative of a mode of the electronic device and generate a corresponding trigger signal. The processor is responsive to an input at the first input unit by an instruction in a second instruction set in response to a first trigger signal indicating that the electronic device switches from the first mode to the second mode; and responsive to an input at the first input unit by an instruction in a first instruction set in response to a second trigger signal indicating that the electronic device switches from the second mode to the first mode.Specifically, in the first example, the first sensor may include a light-sensitive sensor, the light-sensitive sensor includes a light detection array disposed corresponding to a lighting array of the display and configured to determine an exposed region of the display according to a region satisfying a predetermined illuminance threshold in the light detection array as a parameter indicating a mode of the electronic device.In a second example, the first sensor may include a bending detection unit disposed in the connection body and configured to determine a bending state of the connection body as a parameter indicating a mode of the electronic device.FIGS. 21A and 21B are schematic diagrams illustrating operations and display contents of the electronic device according to the fourth embodiment of the present disclosure in various modes.As illustrated in FIG. 21A, the electronic device is in a first mode. In the first mode, a first uncovered part of the first display and the first input unit point in the same direction. And the first uncovered part has a relatively small area. In this first mode, the display content is displayed on the first display. In this case, when an operation of a first mode (such as a swiping input operation) is received by the first input unit, the display control unit changes the display of the first display accordingly by an instruction in the first instruction set in response to the swiping input operation. For example, when the display content is a first notification message, the display control unit may change the first notification message to a second notification message in response to the swiping input operation.In addition, in the first mode illustrated in FIG. 21A, when an operation of a second mode (such as a click input operation) different from the first mode is received by the first input unit, the processor may optionally perform no processing.As illustrated in FIG. 21B, the electronic device is in the second mode. In the second mode, a second uncovered part of the first display and the first input unit point in the same direction. And the second uncovered part has a relatively large area. In this second mode, the display content displayed on the first display is more than that displayed on the first display in the first mode as in FIG. 21A, the information amount is larger. In this case, when an operation of a second mode (such as a click input operation) is received by the first input unit, the processor changes the display of the second display accordingly by an instruction in the second instruction set in response to the click input operation.In addition, in the case that a second display is also disposed in the second surface of the second body to form a touch display, a character string may be displayed on the touch display, each position of the character string indicates a corresponding input character when the user performs a touch input. Specifically, in FIG. 21B, there is a representation of the character string as an example, which is a virtual keyboard. In this case, when a click input operation is received on the virtual keyboard through the touch display, the processor may determine a corresponding character and the character is displayed in the first display. That is, in the second mode, the user can perform an input operation such as editing a character.In addition, optionally, in the second mode illustrated in FIG. 21B, when an operation of a first mode (such as a swiping input operation) different from the second mode is received by the first input unit, the processor may not perform processing because the second instruction set may not include an instruction corresponding to the first mode.As will be apparent to those skilled in the art, although a description with operations in two different ways, the swiping input operation and clicking input operation, is given above as examples, the present disclosure is not limited thereto. Instead, in the electronic device according to the fourth embodiment of the present disclosure, the first input unit may receive various types of input operations in various modes, and the processor may react by instructions in various instruction sets. In addition, in the case that the first input unit and the optional second display stack-form a touch display, in the first mode, the second display may be disabled so that the touch display serves only as a touch panel, thereby saving power of the electronic device. In the second mode, the second display may display content corresponding to a second mode operation mode such as a virtual keyboard, etc., so as to assist the user in input. That is, the touch display supports another function in another mode.Specifically, in the first example, as described above, the first sensor detects a parameter indicating a mode of the electronic device. As long as the first sensor detects that the mode of the electronic device changes, the processor accordingly changes an appealing manner to an input of the first input unit. For example, as long as the first sensor detects that the electronic device shifts to the second mode, the processor accordingly changes a responding manner to an input of the first input unit, for example, responds by an instruction in the second instruction set. Further, if the second indicator is locked in the prior mode, the processor may trigger the release of the second indicator.In the second example, as described above, the electronic device may have the first mode, the second mode, and the third mode. When the first sensor detects that the mode of the electronic device changes, the processor determines whether the mode before the change is in a specific mode. Only when the electronic device switches from a specific mode to another mode does the processor change an appealing manner according to an input of the first input unit. For example, only when the electronic device switches from the first mode to the second mode, the processor changes a responding manner according to an input of the first input unit, for example, responds by an instruction in the second instruction set. Further, if the second indicator is locked in the prior mode, the processor may trigger the release of the second indicator.In the third example, when the first sensor detects that the mode of the electronic device is changing, the processor further determines whether a particular application is running on the electronic device in the mode before a change occurs. Only when a specific application runs on the electronic device in the mode before a change occurs does the processor change an appealing manner according to an input of the first input unit. For example, only when the electronic device switches from a certain mode to the second mode and an application supporting character input runs in the mode before a change occurs, the processor changes a responding manner according to an input of the first input unit, for example, responds by an instruction in the second instruction set. Further, if the second indicator is locked in the prior mode, the processor may trigger the release of the second indicator.Therefore, the electronic device according to the fourth embodiment of the present disclosure includes the first body and the second body connected by the connection body, a display is disposed on the first surface of the first body, and an input unit is disposed in the second surface of the second body, thereby providing a new product form including a display and input unit, which thereby makes selection for a user richer and improves the experience of the user.Further, in the electronic device according to the fourth embodiment of the present disclosure, when an input signal is received, a response may be made by instructions in different instruction sets according to a current mode of the electronic device, so that the operation mode of the multiple mode electronic device matches its mode, so that the user can control the electronic device with a simple operation corresponding to the user's perception habits, thereby increasing the operation efficiency and further improving the user's experience.Next, an information processing method according to the fourth embodiment of the present disclosure will be described with reference to FIG. 20.The display processing method according to the fourth embodiment of the present disclosure may be applied to an electronic device. The electronic device comprises: a first body having a first surface and a second surface that are opposite to each other; a connection body; and a second body having a first surface and a second surface that are opposite to each other and that is connected to the first body through the connection body; a first display disposed at least in the first surface of the first body; a first input unit disposed at least in the second surface of the second body; wherein the electronic device has a first outer surface and a second outer surface, the first outer surface comprises the first surface of the first body and the first surface of the second body, the second outer surface comprises the second surface of the first body and the second surface of the second body.In addition, the electronic device may have at least a first mode and a second mode. In the first mode, the first body and the second body have a first relative positional relationship. In the second mode, the first body and the second body have a second relative positional relationship.As shown in FIG. 22, an input signal is first received in step S2210. Next, in step S220, it is determined whether the electronic device is in the first mode or the second mode based on the parameter. When the electronic device is in the first mode, the process proceeds to step S230, a response to the input signal is made by an instruction in a first instruction set; when the electronic device is in the second mode, the process proceeds to step S2240, a response to the input signal is made by an instruction in a second instruction set. The first instruction set and the second instruction set are at least partially different.In one embodiment, specifically in the first mode, in response to an input signal indicating a swiping input operation, a display content on the first display is changed. In the second mode, a corresponding character is determined in response to an input signal indicating a click input operation, and the character is displayed on the first display.In another embodiment, when it is determined that the electronic device is in the first mode, a parameter indicative of a mode of the electronic device is detected to generate a corresponding trigger signal. A response to the input signal is performed by an instruction in a second instruction set in response to a first trigger signal indicating that the electronic device is transitioning from the first mode to the second mode.In another embodiment, when it is determined that the electronic device is in the second mode, a parameter indicative of a mode of the electronic device is detected to generate a corresponding trigger signal. A response to the input signal is performed by an instruction in a first instruction set in response to a second trigger signal indicating that the electronic device is transitioning from the second mode to the first mode.Specific embodiments of respective steps of the information processing method have already been described in the detailed description for the electronic device with reference to FIGS. 20 and 21, and repetition thereof is omitted.Further, in the information processing method according to the fourth embodiment of the present disclosure, when an input signal is received, a response may be made to instructions in different instruction sets according to a current mode of the electronic device, so that the operation mode of the electronic device having multiple modes is matched to its mode, so that the user can control the electronic device with a simple operation corresponding to the perception habits of the user, thereby increasing the operation efficiency and further improving the experience of the user.FIG. 23 is a perspective view of the first mode of the electronic device according to a fifth embodiment of the present disclosure. As illustrated in FIG. 23, in the first mode, the first surface 100 of the first body 10 is covered by the connection body and the second body 20.FIG. 24 is a perspective view of the second mode of the electronic device according to the fifth embodiment of the present disclosure. As illustrated in FIG. 24, in the second mode, a surface composed of the first surface 100 of the first body 10 and the first surface 300 of the connection body 30 is covered by the second body 20.FIG. 25 is a perspective view of the third mode of the electronic device according to the fifth embodiment of the present disclosure. As illustrated in FIG. 25, when the electronic device 1 is in the third mode, the first surface 100 of the first body 10, and the first surface 300 of the connection body 30 and the first surface 200 of the second body 20 form approximately a single plane.FIG. 26 is a perspective view of the fourth mode of the electronic device according to the fifth embodiment of the present disclosure. As illustrated in FIG. 26, in the fourth mode, the first surface 100 of the first body 10 and the first surface 200 of the second body 20 are opposed to each other. Specifically, the fourth mode may be that the second surface 201 of the second body 20 and the second surface 101 of the first body 10 are in contact, and may also be that a distance between the second surface 201 of the second body 20 and the second surface 101 of the first body 10 is less than a predetermined threshold.Hereinafter, respective input units of the electronic device according to the fifth embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. FIG. 27 is a perspective view of partial input units of respective bodies of the electronic device according to the fifth embodiment of the present disclosure. As illustrated in FIG. 27, the connection body 30 includes a connection part input unit 230 configured to acquire an input operation by the user. For example, the second body 20 and the first body 10 may also have a first partial input unit 210 and a second partial input unit 220, respectively. In this way, the processor (not illustrated) of the electronic device 1 can perform corresponding processing according to the input operation obtained from the respective partial input units. For example, these partial input units are a touch sensor, but may be a physical button or another form of input units as long as they can acquire the input operation of the user. Typically, the first partial input unit 210, the second partial input unit 220, and the connection part input unit 230 may be disposed on the same outer surface of the electronic device 1. FIG. 27 shows an example that the respective partial input units are arranged on the first outer surface of the electronic device, that is, the first partial input unit 210 is arranged on the first surface 100 of the first body 10, the second partial input unit 220 is arranged on the first surface 200 of the second body 20, and the connection part input unit 230 is arranged on the first surface 300 of the connection body 30. However, the present disclosure is not limited to the above-described case, at least one partial input unit may be disposed on the second surfaces of respective bodies, for example, the connection part input unit 230 is disposed on the second surface of the connection body 30. In addition, at least one partial input unit may also be arranged on the first and second surfaces of respective bodies, for example, the second partial input unit 220 is arranged on the first surface 201 and the second surface 202 of the second body.Next, the embodiments of the electronic device will be described in detail with reference to the accompanying drawings. FIG. 28 is a perspective view of a second input unit of the electronic device according to the fifth embodiment of the present disclosure. As illustrated in FIG. 28, the electronic device 1 may also have a second input unit 200 on the first outer surface for acquiring an input operation on the entire first outer surface. In this case, the first partial input unit 210, the connection part input unit 230, and the second input unit 220 respectively form the first region, the second region, and the third region on the second input unit. With the above-described structure, it is possible to acquire input from a user integrated on the first outer surface, so that the user can input instructions in a larger space, can achieve stronger functions.In addition to the function of obtaining user input, the electronic device 1 according to this embodiment of the present disclosure may also simultaneously have a display function. FIG. 29 is a perspective view of partial displays of respective bodies of the electronic device according to the fifth embodiment of the present disclosure. As illustrated in FIG. 29, the first surface 100 of the first body 10 may include the first partial display 310, the first surface 300 of the connection body 30 may include the connection part display 330, the first surface 201 of the second body 20 may include the second partial display 320. In this way, corresponding partial displays may display content associated with processing performed by the processor of the electronic device 1. However, the present disclosure is not limited to the above-described case, at least one partial display may also be disposed on the second surfaces of respective bodies, for example, the second partial display 320 is disposed on the first surface 201 and the second surface 202 of the second body. In addition, at least one partial input unit may also be disposed on the first and second surfaces of respective bodies, for example, the second partial display 320 is disposed on the first surface 201 and the second surface 202 of the second body, respectively. On the other hand, the electronic device 1 according to the fifth embodiment of the present disclosure may also include one or two of the first partial display, the connection part display, and the second partial display. For example, the electronic device 1 according to the fifth embodiment of the present disclosure may not have a second partial display disposed on the first surface of the second body.In an embodiment, the first partial display 310, the second partial display 320, and the connection part display 330 may overlap with at least a part of the first partial input unit 210, the second partial input unit 220, and the connection input unit 230, respectively, to obtain a touch screen function of the first body 10, the second body 20, and the connection body 30.For example, it is possible to establish a deformable display on the first outer surface of the electronic device. FIG. 30 is a perspective view of a first display of the electronic device according to the fifth embodiment of the present disclosure. As illustrated in FIG. 30, the first partial display 310, the connection part display 330, and the second partial display 320 respectively form the first region, the second region, and the third region of the first display 300. It should be noted that the present disclosure is not limited thereto, the first display 300 may cover only one or two of the corresponding partial displays, for example, the first partial display 310 and the connection part display 330 serve as the first region, and the second region of the first display 300 and the second partial display 320 are independent of the first display 300. In this case, the first display 300 may have deformation together with the connection body 30, thereby being able to adapt to different modes of the electronic device 1. By arranging the first display on the first outer surface, content associated therewith can be displayed in a large area in the first outer surface of the electronic device 1, such as a reproduction of a video, etc. In addition, the first display 300 can overlap with at least a part of the second input unit 200, and this can achieve the touch screen function entirely on the first outer surface of the electronic device 1.The electronic device 1 may store various instruction sets in a storage unit (not illustrated), and instructions in each instruction set indicate an imaging ratio between user input and corresponding processing executed by the processor (not illustrated). In an embodiment of the present disclosure, the processor may respond to an input operation obtained from the first sub input unit 210, the second sub input unit 220, and the connection part input unit 230, respectively (or completely obtained from the second input unit 220) according to another mode of the electronic device 1 and depending on instructions in another instruction set. This will be shown below with the third mode and the fourth mode as an example.Hereinafter, measures of the processor of the electronic device 1 will be described in detail with reference to the accompanying drawings, these steps represent a control method for the electronic device in the present disclosure. It should be noted that, below, illustration with the third mode and the fourth mode of the electronic device 1 is given as an example, but is not actually limited, the present disclosure may be applied to other modes of the electronic device 1. FIG. 31 is a flowchart of a control method of the electronic device according to the fifth embodiment of the present disclosure as illustrated in FIG. 31 :First, a mode in which the electronic device 1 is currently located is determined (step S 3110). As described above, since the connection body 30 is deformable, the second body 20 can rotate relative to the first body due to at least the connection body, whereby the electronic device 1 can switch between different modes. Therefore, it is possible to set a sensor on the connection body 30 of the electronic device 1, and a mode in which the electronic device 1 is currently located may be determined according to a deformation state of the connection body 30.When the electronic device is in the third mode, an input obtained from the connection part input unit is responsive to an instruction in a third instruction set (step S 3120). In this case, the electronic device 1 presents the user with an entire first outer surface, so that the third instruction set may make the connection part input unit, the first part input unit, and the second part input unit a common input (or make the second input unit an input) to execute corresponding processing. In this way, an input from the user can be obtained on the entire first outer surface, thereby achieving various functions requiring a wide range.When the electronic device is in the fourth mode, an input obtained from the connection part input unit is responsive to an instruction in the fourth instruction set (step S 3130). The fourth instruction set may be instructions that allow the connection part input unit 230 to acquire independently of the first part input unit 210 and the second part input unit 220. For example, a display of the first sub-display 310 and / or the second sub-display 329 may be controlled in response to an input obtained from the connection part input unit 230. For example, during a video playback function of the electronic device 1, it is possible to shift the connection part input unit 230 for adjusting volume; during an image display function, it is possible to shift the connection part input unit 230 for enlarging and reducing an image; during an electronic book reading function, it is possible to shift the connection part input unit 230 for controlling page turning, etc.FIG. 32 is a perspective view of a connecting sub input unit of the electronic device according to the fifth embodiment of the present disclosure. As illustrated in FIG. 32, when the electronic device 1 is in the fourth mode, the connection part is bent so that a first surface facing the user forms a thin stripe region along the direction of the rotation shaft. In this case, for example, the connection input unit 230 includes a touch sensor, and the processor of the electronic device determines an input of the touch sensor, when a determination result indicates that the input is a swiping input along the direction of the rotating shaft, various processes described above are to be executed. In this way, identification of a swiping input along the direction of the rotating shaft is possible, thereby avoiding an erroneous operation.In view of the foregoing, the electronic device and the mode switching method according to the present disclosure may implement at least two different operation modes, thus providing different display regions in different operation modes, and perform display of the corresponding content in the different display regions based on the operation modes.It should be noted that in the specification, the terms "comprise", "comprise" and all variations thereof are intended to cover a non-exclusive inclusion, such that the procedure, method, product or device comprising a series of elements comprises not only those elements but also other elements not expressly enumerated or even inherent elements of that procedure, method, product or device. Unless further limited, elements defined by the term "comprises a... " do not exclude that there are additional identity elements in the procedure, method, product, or device of the elements.Finally, it should be noted that the above-described series of processes includes not only processes that are executed chronologically in the order mentioned here, but also processes that are executed in parallel or individually, but not chronologically.From the above description of the implementations, it is fully understood by those skilled in the art that the present disclosure may be implemented in some kind of software plus a necessary hardware platform, and of course, the present disclosure may also be fully implemented by hardware. Based on this finding, the technical solution of the present disclosure contributing to the prior art may be implemented in whole or in part in the form of a software product. The computer software product may be stored in a storage medium such as ROM / RAM, floppy disk, CD-ROM, and include a plurality of instructions that cause a computing device (which may be a personal computer, server, or network device) to perform the method described in the various embodiments of the present disclosure, or certain portions thereof.Although the present disclosure has been described in detail above, specific examples are applied in this text to illustrate the principles and implementations of the present disclosure, these descriptions of the above embodiments are only for understanding the method of the present disclosure and its core concept. Incidentally, modifications may be made to the specific implementations and applications by one of ordinary skill in the art depending on the concepts of the present disclosure. In summary, the content of this specification should not be construed as limiting the present disclosure.

Claims

An electronic device comprising: a first body (10) having a first end and a second end, the first end being a free end; a connection body (30) having a third end and a fourth end, the third end being connected to the second end; a second body (20) having a fifth end and a sixth end, the fifth end being connected to the fourth end, the sixth end being a free end, the second body (20) being movable relative to the first body (10) due to the connection body (30); wherein the electronic device has at least a first rotation mode and a second rotation mode, wherein in the first rotation mode the electronic device is capable of performing a relative rotation between a first part and a second part, wherein a rotation axis is at a first position of the connection body (30), the first part comprises the first body (10) and a first connection part body, the second part comprises the second body (20) and a second connection part body, the first connection part body and the second connection part body are formed by dividing the connection body (30) at the first position, and in the second rotation mode, the electronic device is capable of performing relative rotation between a third part and a fourth part, wherein a rotation axis is at a second position of the connection body (30), the third part comprises the first body (10) and a third connection part body, the fourth part comprises the second body (20) and a fourth connection part body, the third connection part body and the fourth connection part body are formed by dividing the connection body (30) at the second position; wherein the electronic device has a first mode and a second mode, in the first mode, the electronic device rotates in the first rotation mode and a maximum distance between corresponding points of the first body (10) and the second body (20) is less than a first predetermined threshold, in the second mode, the electronic device rotates in the second rotation mode and a maximum distance between corresponding points of the first body (10) and the second body (20) is less than the first predetermined threshold, and the electronic device performs a mode change such that the second body (20) slides relative to the first body (10); wherein the electronic device further comprises: a sensor disposed in the first body and / or the connection body and / or the second body and configured to detect a mode of the electronic device, wherein the sensor comprises a bending detection unit (90) disposed in the connection body (30) and configured to determine a mode of the electronic device according to a state of the connection body (30), wherein the bending detection unit (90) comprises an angle sensor that detects a bending angle of the connection body (30); a processor disposed in the first body (10) and / or the connection body (30) and / or the second body (20) and configured to control a mode switching of the electronic device according to a mode detected by the sensor, the processor configured to switch a display content on a display (70) according to a mode switching of the electronic device, the display (70) being disposed at least on a first surface (100) of the first body (10); When the sensor detects that the mode of the electronic device changes due to a detected change in the bending angle of the connection body (30), each time the sensor detects that an exposed region of the display (70) on the first surface (100) of the first body (10) has been changed by a predetermined area, the processor controls the display (70) on the first surface (100) of the first body (10) to change its display content according to the area change of the exposed region of the display (70) on the first surface (100) of the first body (10).The electronic device according to claim 1, wherein switching between the first mode and the second mode is implemented in a manner that a distance between the sixth end and the first body (10) is kept smaller than the first predetermined threshold.The electronic device of claim 2, wherein, upon a transition between the first mode and the second mode, a distance between the first surface (100) of the first body (10) and a first surface of the second body (20) is less than the first predetermined threshold.The electronic device according to claim 3, wherein in the first mode, when an external force having a component acts on the second body (20) in a direction from the sixth end to the fifth end and a magnitude of the component of the external force reaches a first predetermined value, the electronic device switches from the first mode to the second mode, and in the second mode, when the second body (20) is subjected to an external force having a component in a direction from the fifth end to the sixth end and a magnitude of the component of the external force reaches a first predetermined value, the electronic device switches from the second mode to the first mode.The electronic device according to any one of claims 1-4, wherein the electronic device further has a third mode in which the first surface (100) of the first body (10), a first surface of the connection body (30), and a first surface of the second body (20) form a first outer surface, and the first outer surface is flat or approximately flat in the third mode.The electronic device according to any one of claims 1-5, wherein the connection body (30) comprises at least three rotating elements (30n), each of the at least three rotating elements (30n) has a self-rotating shaft (31n), the corresponding self-rotating shafts (31n) of the at least three rotating elements (30n) are parallel to each other, and when an external force acting on a rotating element (30n) is vertical to the self-rotating shaft (31n), and a magnitude of a component in a direction tangential to an outer surface of the one rotating element (30n) reaches a second predetermined value, the one rotating element (30n) is capable of rotating the self-rotating shaft (31n), and when the one rotating element (30n) rotates, the other rotating elements (30n) rotate accordingly; or when the one rotating member (30n) rotates, at least one of the other rotating members (30n) does not rotate.The electronic device according to claim 6, wherein the connection body (30) is composed of the at least three rotating elements (30n); or the connection body (30) comprises two rotating element groups and at least one non-rotating element between the two rotating element groups, each rotating element group comprising at least two rotating elements (30n).The electronic device of any of claims 1-7, wherein an area of a first uncovered portion of the display (70) in the first mode is different than an area of a second uncovered portion of the display (70) in the second mode.The electronic device of any one of claims 1-8, wherein the display (70) is a deformable display, wherein the display (70) is disposed at least in a region formed by the first surface (100) of the first body (10) and a first surface of the connection body (30); or the display (70) is formed in a region formed by the first surface (100) of the first body (10), the first surface of the connection body (30), and the first surface of the second body (20); and in the first mode and the second mode, a part of the display (70) covers another part of the display (70).The electronic device according to any one of claims 1-9, wherein the sensor further comprises a photosensitive unit (80), the photosensitive unit (80) comprises a light detection array arranged corresponding to a lighting array of the display (70), and an exposed region of the display (70) is determined such that an array region satisfying a predetermined illuminance threshold in a light detection array is detected to determine a mode of the electronic device.The electronic device according to any one of claims 1 to 10, wherein the first surface (100) of the first body (10) and a first surface of the second body (20) are parallel to each other in both the first mode and the second mode, and the first surface (100) of the first body (10) and the first surface of the second body (20) move parallel to each other in switching between the first mode and the second mode.A mode switching method applied to an electronic device, the mode switching method comprising: detecting (S1601) a mode of the electronic device; and controlling (S1602) a mode switching of the electronic device according to a detected mode; wherein the electronic device comprises: a first body having a first end and a second end; a connection body having a third end and a fourth end, the third end being connected to the second end; a second body having a fifth end and a sixth end, the fifth end being connected to the fourth end, the second body being capable of moving relative to the first body due to the connection body; wherein the electronic device has at least a first rotation mode and a second rotation mode, wherein in the first rotation mode, the electronic device is capable of performing relative rotation between a first part and a second part, a rotation axis being located at a first position of the connection body, the first part comprises the first body and a first connection part body, the second part comprises the second body and a second connection part body, the first connection part body and the second connection part body are formed by dividing the connection body at the first position, and in the second rotation mode, the electronic device is capable of performing relative rotation between a third part and a fourth part, a rotation axis being located at a second position of the connection body, the third part comprises the first body and a third connection part body, the fourth part comprises the second body and a fourth connection part body, the third connection part body and the fourth connection part body are formed by dividing the connection body at the second position; wherein the electronic device has a first mode and a second mode, in the first mode, the electronic device rotates in the first rotation mode and a maximum distance between corresponding points of the first body and the second body is less than a first predetermined threshold, in the second mode, the electronic device rotates in the second rotation mode and a maximum distance between corresponding points of the first body and the second body is less than the first predetermined threshold, and the electronic device performs a mode switching such that the second body slides relative to the first body; wherein the electronic device further comprises: a sensor disposed in the first body and / or the connection body and / or the second body and configured to detect a mode of the electronic device, the sensor comprising a bending detection unit disposed in a connection body and configured to determine a mode of the electronic device according to a state of the connection body, the bending detection unit comprising an angle sensor that detects a bending angle of the connection body; and a processor disposed in the first body and / or the connection body and / or the second body and configured to control a mode change of the electronic device according to a mode detected by the sensor; wherein the method further comprises switching (S 1603) a display content on a display according to a mode switching of the electronic device, wherein the display is disposed on at least a first surface of the first body; and wherein the switching a display content on the display according to a mode switching of the electronic device further comprises: when the sensor detects that the mode of the electronic device changes based on a detected change in the bending angle of the connection body, the processor controls, every time the sensor detects that an exposed region of the display on the first surface of the first body has been changed by a predetermined area, the display on the first surface of the first body to change its display content according to the area change of the exposed region of the display on the first surface of the first body.The mode switching method according to claim 12, wherein a first surface of the first body and a first surface of the second body are parallel to each other in both the first mode and the second mode, and the first surface of the first body and the first surface of the second body move parallel to each other in switching between the first mode and the second mode.

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