Foldable electronic devices

Abstract

According to an exemplary embodiment of the present invention, an electronic device includes a first housing and a second housing, and a hinge module connecting the first housing and the second housing. The hinge module includes a first portion configured to be rotatable about a first rotation axis, a second portion parallel to the first rotation axis and configured to be rotatable about a second rotation axis spaced apart from the first rotation axis, and a first bracket connected to the first portion and the second portion and fixed to the first housing. The first portion and the first bracket are connected to be slidable relative to each other in a first linear direction, and the second portion and the first bracket are connected to be slidable relative to each other in a second linear direction different from the first linear direction. When the angle between the first housing and the second housing changes, the first portion and the first bracket slide relative to each other, and the second portion and the first bracket slide relative to each other.

Description

[Technical Field]

[0001] The present invention relates to a foldable electronic device. [Background technology]

[0002] When the foldable electronic device switches from an unfolded state to a folded state, a region of the flexible display module corresponding to the folding portion of the foldable electronic device is deformed and positioned from an unfolded state to a bent state.

[0003] The preceding information is provided as background information intended to aid in understanding the present invention. No assertion or determination is made as to the applicability of any of the foregoing as prior art with respect to the present invention. Summary of the Invention [Problem to be solved by the invention]

[0004] A structure capable of reducing bending stress in a region of a flexible display module corresponding to a folding portion of the foldable electronic device is required for the foldable electronic device. The present invention provides a foldable electronic device that can reduce bending stress in a region of a flexible display module that corresponds to a folding portion of the foldable electronic device.

[0005] The technical problems to be solved by the present invention are not limited to those mentioned above, and other technical problems not mentioned will be apparent to those skilled in the art from the following description. [Means for solving the problem]

[0006] According to an exemplary embodiment of the present invention, an electronic device includes a first housing, a second housing, and a hinge module connecting the first and second housings. The hinge module includes a first portion, a second portion, and a first bracket. The first portion is rotatable about a first rotation axis. The second portion is rotatable about a second rotation axis parallel to the first rotation axis and spaced apart from the first rotation axis. The first bracket is connected to the first and second portions and fixed to the first housing. The first portion and the first bracket are connected to be slidable relative to each other in a first linear direction, and the second portion and the first bracket are connected to be slidable relative to each other in a second linear direction different from the first linear direction. When the angle between the first housing and the second housing changes, the first portion and the first bracket slide relative to each other, and the second portion and the first bracket slide relative to each other.

[0007] According to an exemplary embodiment of the present invention, an electronic device includes a first housing, a second housing, and a hinge module connecting the first and second housings. The hinge module includes a first portion, a second portion, a first bracket, a third portion, a fourth portion, and a second bracket. The first portion is configured to be rotatable about a first rotation axis. The second portion is configured to be rotatable about a second rotation axis parallel to the first rotation axis and spaced apart from the first rotation axis. The first bracket is connected to the first and second portions and fixed to the first housing. The third portion is configured to be rotatable about the third rotation axis. The fourth portion is configured to be rotatable about the fourth rotation axis. The second bracket is connected to the third and fourth portions and fixed to the second housing. The third rotation axis is disposed symmetrically to the first rotation axis with respect to a center line of the electronic device. The third portion is disposed symmetrically to the first portion with respect to the center line of the electronic device. The fourth rotation axis is disposed symmetrically with the second rotation axis with respect to the center line of the electronic device. The fourth portion is provided symmetrically with the second portion with respect to the center line of the electronic device. The first portion and the first bracket are connected to each other so as to be slidable relative to each other in a first linear direction. The second portion and the first bracket are connected to each other so as to be slidable relative to each other in a second linear direction different from the first linear direction. The third portion and the second bracket are connected to each other so as to be slidable relative to each other in a third linear direction symmetrical to the first linear direction with respect to a center line of the electronic device. The fourth portion and the second bracket are connected to be slidable relative to each other in a fourth linear direction symmetrical to the second linear direction with respect to the center line of the electronic device. When the angle between the first housing and the second housing changes, the first portion and the second portion slide relative to the first bracket, and the third portion and the fourth portion slide relative to the second bracket. [Effects of the Invention]

[0008] According to the foldable electronic device of the present invention, it is possible to reduce bending stress in the area of ​​the flexible display module corresponding to the hinge portion. When the foldable electronic device is switched from an unfolded state to a folded state, the buckling phenomenon in the area of ​​the flexible display module corresponding to the hinge portion can be reduced.

[0009] Other advantages that are obtained or are expected to be obtained by various embodiments of the present invention may be directly or implicitly disclosed in the detailed description of the embodiments of the present disclosure. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a block diagram illustrating a schematic configuration of an electronic device in a network environment according to an embodiment of the present invention. [Figure 2] FIG. 1 illustrates an electronic device in an unfolded state according to one embodiment of the present invention. [Figure 3] FIG. 1 illustrates an electronic device in a folded state according to one embodiment of the present invention. [Figure 4] FIG. 1 is a partially exploded perspective view of an electronic device in an unfolded state according to one embodiment of the present invention. [Figure 5] 1 illustrates a foldable housing for an electronic device in an unfolded state according to an embodiment of the present invention. [Figure 6] 1A and 1B are cross-sectional views showing an electronic device in an unfolded state and a folded state, respectively, according to an embodiment of the present invention; [Figure 7] 1A-1C are cross-sectional views illustrating a foldable housing in an unfolded electronic device according to various embodiments of the present invention. [Figure 8] FIG. 2 is an exploded perspective view of a first hinge module according to an embodiment of the present invention. [Figure 9] FIG. 2 is a perspective view of a first hinge module according to an embodiment of the present invention. [Figure 10] FIG. 2 illustrates a first portion of a first hinge module according to one embodiment of the present invention. [Figure 11] FIG. 10 illustrates a third portion of the first hinge module according to an embodiment of the present invention. [Figure 12] FIG. 10 illustrates a second portion of the first hinge module according to one embodiment of the present invention. [Figure 13] FIG. 10 illustrates a fourth portion of the first hinge module according to an embodiment of the present invention. [Figure 14] FIG. 10 shows a fifth portion of the first bracket according to one embodiment of the present invention. [Figure 15] FIG. 10 shows a seventh portion of the second bracket according to one embodiment of the present invention. [Figure 16] 3 is a cross-sectional view showing a first circular gear, a second circular gear, a third circular gear, and a fourth circular gear according to an embodiment of the present invention. FIG. [Figure 17] 1A and 1B are perspective views of a hinge portion in an unfolded state of an electronic device according to an embodiment of the present invention, and a diagram illustrating the hinge portion. [Figure 18] A diagram showing a first hinge module in an unfolded state of an electronic device according to one embodiment of the present invention, a cross-sectional view of the first hinge module taken along line DD', and a cross-sectional view of the first hinge module taken along line EE'. [Figure 19] 1A and 1B are perspective views of a hinge portion in a closed state of an electronic device according to an embodiment of the present invention, and a diagram illustrating the hinge portion. [Figure 20]A diagram showing a first hinge module in a closed state of an electronic device according to one embodiment of the present invention, a cross-sectional view of the first hinge module taken along line F-F', and a cross-sectional view of the first hinge module taken along line E-E'. [Figure 21] A diagram showing a first hinge module in an intermediate state of an electronic device according to one embodiment of the present invention, a cross-sectional view of the first hinge module taken along line H-H', and a cross-sectional view of the first hinge module taken along line II'. [Figure 22] 1A and 1B show an electronic device in an unfolded state, an intermediate state, and a folded state according to an embodiment of the present invention. [Figure 23] 1A and 1B are diagrams illustrating a first hinge module in an unfolded state of an electronic device according to various embodiments of the present invention, and a cross-sectional view of the first hinge module taken along line J-J'. [Figure 24] 1A and 1B are diagrams showing a hinge portion of an electronic device in an unfolded state according to various embodiments of the present invention, and a cross-sectional view of the hinge portion taken along line KK'. [Figure 25] 1A and 1B are diagrams illustrating a first hinge module in a folded state of an electronic device according to various embodiments of the present invention, and a cross-sectional view of the first hinge module taken along line LL'. [Figure 26] 1A and 1B are diagrams illustrating an unfolded state and a folded state of an electronic device according to various embodiments of the present invention;

[0011] The above and other aspects, features, and advantages of particular embodiments of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. DETAILED DESCRIPTION OF THE INVENTION

[0012] Various exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0013] FIG. 1 is a block diagram showing a schematic configuration of an electronic device 101 in a network environment 100 according to an embodiment of the present invention. Referring to FIG. 1, in a network environment 100, an electronic device 101 can communicate with an external electronic device 102 via a first network 198 (e.g., a short-range wireless communication network) or with at least one of an external electronic device 104 or a server 108 via a second network 199 (e.g., a long-range wireless communication network).

[0014] The electronic device 101 communicates with the external electronic device 104 via the server 108 . The electronic device 101 includes a processor 120, a memory 130, an input module 150, an acoustic output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connection terminal 178, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a subscriber identity module 196, and / or an antenna module 197. In some embodiments herein, electronic device 101 may omit at least one of these components (eg, connection terminal 178) or may add one or more other components. In one embodiment herein, some of these components are embodied in a single integrated circuit. For example, the sensor module 176, the camera module 180, or the antenna module 197 may be embodied as a single component (e.g., embedded in the display module 160).

[0015] The processor 120 may, for example, execute software (e.g., program 140) to control at least one other component (e.g., hardware or software component) of the electronic device 101 connected to the processor 120 and perform various data processing or calculations. As at least part of the data processing or calculation, the processor 120 loads instructions or data received from other components (e.g., the sensor module 176 or the communication module 190) into the volatile memory 132, processes the instructions or data stored in the volatile memory 132, and stores the resulting data in the non-volatile memory 134. The processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or application processor (AP)), or an auxiliary processor 123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that can operate independently or together. Additionally or alternatively, auxiliary processor 123 may be configured to use less power than main processor 121 or to be specialized for designated functions. The auxiliary processor 123 may be embodied separately from the main processor 121 or as part of it.

[0016] The auxiliary processor 123 controls at least a portion of the functions or states associated with at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190), for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (e.g., sleep) state, or together with the main processor 121 while the main processor 121 is in an active (e.g., running an application) state. The auxiliary processor 123 (eg, an image signal processor (ISP) or a communication processor CP)) may be embodied as part of another functionally related component (eg, the camera module 180 or the communication module 190). According to one embodiment herein, auxiliary processor 123 (eg, neural network processing device) includes specialized hardware structures for processing artificial intelligence models.

[0017] Artificial intelligence models are generated through machine learning. Such learning may take place, for example, on the electronic device 101 itself, where the artificial intelligence model is executed, or via a separate server (eg, server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the foregoing examples. The artificial intelligence model includes multiple artificial neural network layers. The artificial neural network may be one of, but is not limited to, a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above. The artificial intelligence model may include software structures in addition to or instead of hardware structures.

[0018] The memory 130 stores various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176). Data includes, for example, input data or output data for software (eg, program 140) and associated instructions. The memory 130 includes a volatile memory 132 or a non-volatile memory 134 . The program 140 is stored as software in the memory 130 and includes, for example, an OS 142 , a middleware 144 , or an application 146 .

[0019] The input module 150 receives instructions or data from outside the electronic device 101 (eg, from a user) for use by components of the electronic device 101 (eg, the processor 120). The input module 150 may include, for example, a microphone, a mouse, a keyboard, keys (eg, buttons), or a digital pen (eg, a stylus pen). The audio output module 155 outputs an audio signal to the outside of the electronic device 101 . The audio output module 155 includes, for example, a speaker or a receiver. The speakers are used for general purposes such as multimedia playback or recording playback. The receiver is used to receive an incoming call. The receiver may be embodied separately from or as part of the speaker.

[0020] Display module 160 visually presents information external to electronic device 101 (eg, to a user). Display module 160 may include, for example, a display, a holographic device, or a projector, and control circuitry for controlling the device. Display module 160 may include touch circuitry (e.g., a touch sensor) configured to detect a touch or sensor circuitry (e.g., a pressure sensor) configured to measure the intensity of a force generated by a touch.

[0021] The audio module 170 converts sound into an electrical signal and vice versa. The audio module 170 acquires sound via the input module 150 or outputs sound via the sound output module 155 or an external electronic device (e.g., electronic device 102) connected directly or wirelessly to the electronic device 101 (e.g., a speaker or headphones).

[0022] The sensor module 176 detects an operating condition of the electronic device 101 (eg, power or temperature) or an external environmental condition (eg, user condition) and generates an electrical signal or data value corresponding to the detected condition. The sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0023] Interface 177 supports one or more specified protocols by which electronic device 101 can connect directly or wirelessly with external electronic devices (eg, electronic device 102). The interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, and / or an audio interface.

[0024] The connection terminal 178 includes a connector through which the electronic device 101 is physically connected to an external electronic device (eg, the external electronic device 102). The connection terminal 178 may include, for example, an HDMI (registered trademark) connector, a USB connector, an SD card connector, and / or an audio connector (eg, a headphone connector). Haptic module 179 converts the electrical signals into mechanical (eg, vibration or movement) or electrical stimuli that can be perceived by the user via touch or kinesthetic sensations. Haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device. The camera module 180 captures still and video images. Camera module 180 may include one or more lenses, an image sensor, an image signal processor (ISP), or a flash.

[0025] The power management module 188 manages the power supplied to or consumed by the electronic device 101 . The power management module 188 may be embodied, for example, as at least part of a power management integrated circuit (PMIC). The battery 189 provides power to at least one component of the electronic device 101 . Battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, and / or a fuel battery.

[0026] The communication module 190 supports the establishment of a direct (e.g., wired) or wireless communication channel between the electronic device 101 and an external electronic device (e.g., the electronic device 102, the electronic device 104, or the server 108) and the execution of communication over the established communication channel. The communications module 190 may include one or more communications processors (CPs) that operate independently of the processor 120 (eg, application processor (Ap)) and support direct (eg, wired) or wireless communications. The communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., a local area network (LAN) communication module, or a power line communication module).

[0027] The appropriate one of these communication modules may be a first network 198 (e.g., a short-range communication network such as BLUETOOTH (registered trademark), WiFi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network 199 (e.g., a legacy cellular network, 5G5 th The network communicates with external electronic devices 104 via a telecommunications network such as a next generation network, a next generation communication network, the Internet, or a computer network (e.g., a LAN or WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as multiple separate components (eg, multiple chips). The wireless communication module 192 uses subscriber information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in a subscriber identity module (SIM) 196 to identify or authenticate the electronic device 101 within a communication network, such as a first network 198 or a second network 199.

[0028] The wireless communication module 192 is 4G (4 th It supports 5G networks and next-generation communication technologies, such as NR (new radio access) technology, beyond the 5G (5G generation) network. NR connection technologies support high-speed transmission of high-capacity data (i.e., enhanced mobile broadband (eMBB)), terminal power minimization and connection of multiple terminals (massive machine-type communications (mMTC)), or high reliability and low latency (ultra-reliable and low-latency communications (URLLC)). The wireless communication module 192 supports, for example, a high frequency band (eg, mmWave band) to achieve a high data transmission rate.

[0029] The wireless communication module 192 may support various technologies for ensuring performance in high frequency bands, such as beamforming, massive MIMO (multiple-input and multiple-output), full dimensional MIMO (FD-MIMO), array antenna, analog beamforming, or large scale antenna. The wireless communication module 192 supports various requirements defined by the electronic device 101, an external electronic device (eg, the electronic device 104), or a network system (eg, the second network 199). According to one embodiment of the present invention, the wireless communication module 192 supports a peak data rate (e.g., 20 Gbps or more) for implementing eMBB, loss coverage (e.g., 164 dB or less) for implementing mMTC, or U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for implementing URLLC.

[0030] The antenna module 197 transmits or receives signals or power to or from the outside (eg, an external electronic device). The antenna module 197 includes an antenna that includes a radiator that includes electrical conductors or conductive patterns formed on a substrate (eg, a printed circuit board (PCB)). The antenna module 197 includes multiple antennas (eg, an antenna array). In such a case, at least one antenna compatible with the communication method used in a communication network such as the first network 198 or the second network 199 is selected from the plurality of antennas by, for example, the communication module 190 . Signals or power are transmitted or received between the communication module 190 and an external electronic device via the selected at least one antenna. In addition to the radiator, other components (e.g., a radio frequency integrated circuit (RFIC)) may additionally be formed as part of the antenna module 197.

[0031] According to various embodiments of the present invention, the antenna module 197 forms an mmWave antenna module. According to one embodiment of the present invention, an mmWave antenna module includes a printed circuit board (PCB), an RFIC disposed on or adjacent to a first surface (e.g., a bottom surface) of the printed circuit board and capable of supporting a specified high frequency band (e.g., an mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent to a second surface (e.g., a top surface or a side surface) of the printed circuit board and capable of transmitting or receiving signals in the specified high frequency band.

[0032] At least some of the above components are connected to each other via a peripheral communication method (e.g., a bus, a general purpose input and output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and exchange signals (e.g., commands or data) between them.

[0033] Commands or data are sent or received between the electronic device 101 and the external electronic device 104 via a server 108 connected to a second network 199 . Each of the external electronic devices (102 or 104) can be the same or a different type of device as the electronic device 101. All or part of the operations performed by electronic device 101 may be performed by one or more of external electronic devices (102, 104, or 108). For example, when electronic device 101 must perform a function or service automatically or in response to a request from a user or another device, electronic device 101 may request one or more external electronic devices to perform at least a portion of the function or service instead of, or in addition to, performing the function or service itself. The one or more external electronic devices that receive the request perform at least a portion of the requested function or service, or additional functions or services related to the request, and communicate the results of that performance to the electronic device 101. The electronic device 101 processes the results directly or additionally and provides them as at least part of a response to the request.

[0034] For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technologies are used. The electronic device 101 provides ultra-low delay services using, for example, distributed computing or mobile edge computing (MEC). In other embodiments of the present invention, the external electronic device 104 may include an Internet of Things (IoT) device. The server 108 may be an intelligent server using machine learning and / or neural networks. According to one embodiment of the present invention, the external electronic device 104 or server 108 is included within a second network 199 . The electronic device 101 is based on 5G communication technology and IoT-related technology and is applied to intelligent services (e.g., smart homes, smart cities, smart cars, or healthcare).

[0035] The electronic devices according to the various embodiments disclosed herein may take various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computing device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a consumer electronic device. However, the electronic device is not limited to the above-mentioned devices.

[0036] The various embodiments of the present invention and the terms used therein are not intended to limit the technical features described in the present invention to any particular embodiment. When describing the drawings, like reference numerals are used for like or related components. The singular form of a noun referring to an item may include one or more of the item, unless the relevant context clearly dictates otherwise. In the present invention, each of the phrases such as "A or B," "at least one of A and B," "at least one of A or B," "A, B or C," "at least one of A, B and C," and "at least one of A, B, or C" may include any one of the items listed in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," or "primary" or "secondary" are used simply to distinguish one element from another, and do not limit the element in any other respect (e.g., importance or order). When one element (e.g., a first component) is referred to as "coupled" or "connected" to another element (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the one component is connected to the other component directly (e.g., by wire), wirelessly, or through a third component.

[0037] The term "module" may include a unit implemented in hardware, software, or firmware, and is used interchangeably with terms such as logic, logic block, component, or circuit. A module can be an integrally constructed part or the smallest unit of such a part that performs one or more functions, or a part thereof. For example, according to one embodiment of the present invention, the module is embodied in the form of an application-specific integrated circuit (ASIC).

[0038] Various embodiments of the present invention may be embodied as software (e.g., program 140) including one or more instructions stored on a storage medium (e.g., internal memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). For example, a processor (eg, processor 120) of an apparatus (eg, electronic device 101) retrieves and executes at least one instruction from one or more stored instructions from a storage medium. This allows the device to be operated to perform at least one function in accordance with at least one command word invoked. The one or more instructions may include code generated by a compiler or code executed by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, "non-transitory" simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term does not distinguish between data being stored semi-permanently on the storage medium and data being stored temporarily.

[0039] A method according to an embodiment of the present invention may be provided in a computer program product. Computer program products can be traded as goods between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory, CD-ROM) or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store®) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product is at least temporarily stored or temporarily generated on a machine-readable storage medium, such as the memory of a manufacturer's server, an application store server, or a relay server.

[0040] Each component (eg, module or program) of the aforementioned components includes one or more individuals. One or more of the components or operations described above may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (eg, modules or programs) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the multiple components in the same or similar manner as those performed by that component among the multiple components before the integration. The operations performed by a module, program, or other component may be performed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be performed in a different order, omitted, or one or more other operations may be added.

[0041] FIG. 2 is a diagram illustrating an electronic device 2 in a flat or unfolded state, or unfolding state, according to one embodiment of the present invention. FIG. 3 is a diagram illustrating an electronic device 2 in a folded state according to an embodiment of the present invention. Referring to FIGS. 2 and 3, the electronic device 2 includes a foldable housing 20 and a flexible display module 24 disposed in the foldable housing 20 .

[0042] According to one embodiment, the foldable housing 20 includes a first housing (or a first housing portion or a first housing structure) 21, a second housing (or a second housing portion or a second housing structure) 22, a hinge housing 23, and / or a hinge portion. The first housing 21 and the second housing 22 are connected via a hinge portion and can rotate relative to each other based on the hinge portion. The hinge portion includes one or more hinge modules (or hinge assemblies) (eg, first hinge module 5A, second hinge module 5B, or third hinge module 5C in FIG. 4).

[0043] According to one embodiment, the display area 24A of the flexible display module 24 includes a first display area (or first active area or first screen area) (circled number 1), a second display area (or second active area or second screen area) (circled number 2), and a third display area (or third active area or third screen area) (circled number 3) connecting the first display area (circled number 1) and the second display area (circled number 2), as active areas within the flexible display module 24 that can display images. The first display area (circled number 1) is disposed corresponding to the first housing 21. The second display area (circled number 2) is disposed corresponding to the second housing 22. The third display area (circled number 3) is positioned corresponding to the hinge portion.

[0044] The first display area (circled number 1) is disposed on the first housing 21, and the shape of the first display area (circled number 1) is maintained by the support of the first housing 21. The second display area (circled number 2) is disposed on the second housing 22, and the shape of the second display area (circled number 2) is maintained by the support of the second housing 22. The first display area (circled number 1) and the second display area (circled number 2) may, for example, be provided substantially flat. The unfolded state of the electronic device 2 (see FIG. 2) is where the third display area (circled number 3) is positioned substantially flat. In the unfolded state of the electronic device 2, the first display area (circled number 1) and the second display area (circled number 2) form an angle of approximately 180 degrees, and the display area 24A, including the first display area (circled number 1), the second display area (circled number 2), and the third display area (circled number 3), is provided substantially planar.

[0045] When the electronic device 2 is unfolded, the relative positions between the first display area (circled number 1) arranged in the first housing 21 and the second display area (circled number 2) arranged in the second housing 22 cause the third display area (circled number 3) connecting the first display area (circled number 1) and the second display area (circled number 2) to be positioned flat. In the unfolded state of the electronic device 2, the third display area (circled number 3) is pulled from both the first display area (circled number 1) and the second display area (circled number 2), and the pulling force is provided to reduce damage to the third display area (circled number 3) while positioning the third display area (circled number 3) flat. The third display area (circled number 3) may be provided with an extended width that allows it to lie flat in the unfolded state of the electronic device 2 while relieving tension and stress from the first display area (circled number 1) and the second display area (circled number 2).

[0046] In the unfolded state of the electronic device 2, the hinge portion supports a third display area (circled number 3). When the electronic device 2 is unfolded, even if an external force (e.g., external pressure such as touch input using a user's finger or touch input using an electronic pen) is applied to the third display area (circled number 3), the support of the hinge portion allows the third display area (circled number 3) to remain flat without sagging. The coordinate axes shown in the figure are based on the first housing 21, and for example, the +z axis direction is interpreted as the direction in which the plane provided by the flat first display area (circled number 1) faces. According to one embodiment, the electronic device 2 may be provided in an infolding manner in which the display area 24A of the flexible display module 24 is folded inward.

[0047] FIG. 3 shows the fully folded state of the electronic device 2 in which the first housing 21 and the second housing 22 are no longer positioned close to each other. In the fully folded state of the electronic device 2, the first display area (circled number 1) and the second display area (circled number 2) are arranged facing each other, and the third area (circled number 3) can be arranged in a bent shape. When electronic device 2 is fully folded, the angle between first housing 21 and second housing 22 (or the angle between first display area (circled number 1) and second display area (circled number)) may be between about 0 degrees and about 10 degrees, and display area 24A may be substantially invisible. Although not shown in the figures, the intermediate state of the electronic device 2 may be a state between the unfolded state and the fully folded state, or may be an incompletely folded state compared to the fully folded state. When the angle between the first housing 21 and the second housing 22 is in an intermediate state of any angle or more, a usage environment is provided in which the user has no substantial difficulty in using the display area 24A. Hereinafter, in the disclosure, 'the folded state of the electronic device 2' may refer to the fully folded state as opposed to an intermediate state of an incompletely folded state.

[0048] According to one embodiment, when the electronic device 2 is viewed in an unfolded state (see FIG. 2), the display area 24A of the flexible display module 24 is provided symmetrically with respect to the center line (A) of the electronic device 2. When viewing the electronic device 2 in its unfolded state, the center line (A) corresponds to the center of the width of the third display area (circled number 3) extending from the first boundary between the first display area (circled number 1) and the third display area (circled number 3) to the second boundary between the second display area (circled number 2) and the third display area (circled number 3). When the electronic device 2 is in a folded state (see FIG. 3), the third display area (circled number 3) arranged in a bent shape is substantially symmetrical with respect to the center line (A) of the electronic device 2. When viewing the electronic device 2 in its unfolded state, the display area 24A is substantially rectangular.

[0049] The display area 24A includes a first edge (E1), a second edge (E2), a third edge (E3), and a fourth edge (E4). The first edge (E1) and the second edge (E2) are substantially parallel to the center line (A). The third edge (E3) connects one end of the first edge (E1) and one end of the second edge (E2), and the fourth edge (E4) connects the other end of the first edge (E1) and the other end of the second edge (E2). The first display area (circled number 1) includes the first edge (E1), part of the third edge (E3), and part of the fourth edge (E4). The second display area (circled number 2) includes the second edge (E2), part of the third edge (E3), and part of the fourth edge (E4). The third display area (circled number 3) includes a part of the third edge (E3) and a part of the fourth end (E4). In the folded state of the electronic device 2, the first edge (E1) and the second edge (E2) are aligned and overlap each other. When the electronic device 2 is folded, the portion of the third edge (E3) included in the first display area (circled number 1) and the portion of the third edge (E3) included in the second display area (circled number 2) are aligned and overlap each other. When the electronic device 2 is folded, a portion of the fourth end (E4) included in the first display area (circled number 1) and a portion of the fourth end (E4) included in the second display area (circled number 2) are aligned and overlapping.

[0050] According to one embodiment, the first housing 21 includes a first frame (or a first frame structure or a first framework) 211 and / or a first cover 212 arranged on the first frame 211. The first frame 211 includes a first side (or a first side member, a first side structure, or a first side bezel structure) (for example, the first side 412 in FIG. 4). The first side is disposed along the edge of the first display area (circled number 1) of the flexible display module 24. The first side provides a first side of the electronic device 2 that corresponds to a first display area (circled number 1) within the electronic device 2. The first frame 211 includes a first support (for example, the first support 411 in FIG. 4) that extends from or is connected to the first side.

[0051] The first display area (circled number 1) is disposed on the first support portion, and the first support portion supports the first display area (circled number 1). The first display area (circled number 1) and the first cover 212 are arranged on opposite sides of each other with the first support portion of the first frame 211 in between. The first side of the first frame 211 is disposed so as to surround at least a portion of the space between the first display area (circled number 1) and the first cover 212. The first display area (circled number 1) provides one side of the exterior of the electronic device 2, and the first cover 212 provides the other side of the exterior of the electronic device 2 facing substantially opposite the first display area (circled number 1). Various electrical components (or electronic parts), such as a printed circuit board or a battery, may be disposed on the first support between the first support of the first frame 211 and the first cover 212 .

[0052] According to one embodiment, the second housing 22 includes a second frame (or a second frame structure or a second framework) 221 and / or a second cover 222 disposed on the second frame 221 . The second frame 221 includes a second side (or a second side member, a second side structure, or a second side bezel structure) (for example, the second side 422 in FIG. 4). The second side is disposed along the edge of the second display area (circled number 2) of the flexible display module 24. The second side provides a second side of the electronic device 2 that corresponds to a second display area (circled number 2) within the electronic device 2. When the electronic device 2 is in a folded state (see FIG. 3), the first side of the first frame 211 and the second side of the second frame 221 are aligned and overlap each other. The second frame 221 includes a second support (for example, the second support 421 in FIG. 4) extending from or connected to the second side.

[0053] The second display area (circled number 2) is disposed on the second support portion, and the second support portion supports the second display area (circled number 2). The second display area (circled number 2) and the second cover 222 are arranged on opposite sides of each other with the first support portion of the second frame 221 in between. The second side of the second frame 221 is disposed so as to surround at least a portion of the space between the second display area (circled number 2) and the second cover 222. The second display area (circled number 2) provides one side of the exterior of the electronic device 2, and the second cover 222 provides the other side of the exterior of the electronic device 2 facing substantially opposite the second display area (circled number 2). Various electrical components (or electronic parts), such as a printed circuit board or a battery, are supported by the second support portion and the second cover of the second frame 221. 222 The second support portion is disposed between the first support portion and the second support portion.

[0054] According to one embodiment, the hinge housing (or hinge cover) 23 is coupled to a hinge portion that connects the first frame 211 and the second frame 221. When the electronic device 2 switches from an unfolded state (see FIG. 2) to a folded state (see FIG. 3), a gap opens between the first housing 21 and the second housing 22 on the opposite side of the third display area (circled number 3) due to a change in the relative position between the first housing 21 and the second housing 22, which are connected to each other via a hinge portion, and a change in the state of the hinge portion connected to the hinge housing 23, and the hinge housing 23 is exposed to the outside through the opened gap. When the electronic device 2 is in the folded state, the hinge housing 23 becomes part of the exterior covering the inside of the electronic device 2 through the open gap between the first housing 21 and the second housing 22 . The hinge housing 23 is more exposed in the folded state of FIG. 3 than in the intermediate state. When the electronic device 2 switches from a folded state to an unfolded state, the relative position between the first housing 21 and the second housing 22, which are connected to each other via a hinge portion, changes, and the state of the hinge portion coupled to the hinge housing 23 changes, closing the gap between the first housing 21 and the second housing 22 on the opposite side of the third display area (circled number 3), and the hinge housing 23 is located in the internal space formed by the combination of the first housing 21 and the second housing 22 and is not exposed to the outside.

[0055] According to one embodiment, the electronic device 2 includes a display 25 disposed between the second frame 221 and the second cover 222 . The flexible display included in flexible display module 24 may be interpreted as a 'first display', and display 25 as a 'second display'. The second cover 222 is substantially transparent, and the display 25 is visible through the second cover 222 . In the folded state, the electronic device 2 may be configured to display images via the display 25 instead of the flexible display module 24 .

[0056] According to one embodiment, the first cover 212 includes a first curved area 212a that extends seamlessly toward the first display area (circled number 1) corresponding to the first edge (E1) of the display area 24A. The second cover 222 includes a second curved area 222a that extends seamlessly and flexes toward the second display area (circled number 2) in correspondence with the second edge (E2) of the display area 24A. The first curved area 212a and the second curved area 222a are provided symmetrically on opposite sides of the electronic device 2 when the electronic device 2 is unfolded (see FIG. 2) or folded (see FIG. 3), contributing to an elegant exterior. In one embodiment, the display 25 is a flexible display that is arranged to bend toward the second cover 222 in correspondence with the second curved area 222a. In various embodiments, the first cover 212 may be provided substantially flat without the first curved region 212a. In various embodiments, the second cover 222 may be provided substantially flat without the second curved region 222a. In this case, the display 25 is a substantially rigid display.

[0057] According to one embodiment, the electronic device 2 may include at least one of one or more audio modules (e.g., audio module 170 in FIG. 1 ), one or more sensor modules (e.g., sensor module 176 in FIG. 1 ), one or more camera modules (e.g., camera module 180 in FIG. 1 ), one or more light-emitting modules, one or more input modules (e.g., input module 150 in FIG. 1 ), and / or one or more connection terminal modules (e.g., interface 177 or connection terminal 178 in FIG. 1 ). In various embodiments, electronic device 2 may omit at least one of the components or may additionally include other components. The locations and numbers of components included in the electronic device 2 are not limited to the examples shown in the drawings and may vary.

[0058] Any one of the one or more audio modules includes, for example, a microphone disposed inside the electronic device 2 corresponding to a microphone hole 301 provided on the exterior of the electronic device 2 . In the illustrated example, a microphone hole 301 is provided on the first side of the first frame 211 , and a microphone is disposed in the internal space of the first housing 21 . The positions and numbers of microphones and microphone holes are not limited to the examples shown in the drawings and may vary. In various embodiments, the electronic device 2 may include multiple microphones that are used to detect the direction of sound.

[0059] Any one of the one or more audio modules may include, for example, a first speaker for multimedia playback (or recording and playback) that is arranged inside the electronic device 2 corresponding to a first speaker hole 302 provided on the exterior of the electronic device 2. In the illustrated example, a first speaker hole 302 is provided on the second side of the second frame 221 , and a first speaker is disposed in the inner space of the second housing 22 . Any one of the one or more audio modules may include, for example, a second speaker for calls (e.g., a receiver for calls) arranged inside the electronic device 2 corresponding to a second speaker hole (e.g., a receiver hole) 303 provided on the exterior of the electronic device 2. In the illustrated example, the second speaker hole 303 is provided in the second frame 221 adjacent to the second cover 222 , and the second speaker is disposed in the internal space of the second housing 22 . The positions and numbers of the speakers and speaker holes are not limited to the examples shown in the drawings and may vary. In various embodiments, the microphone hole and the speaker hole may be implemented as a single hole. In various embodiments, a piezo speaker without a speaker hole may be provided.

[0060] The one or more sensor modules generate electrical signals or data values ​​that correspond, for example, to internal operating conditions of the electronic device 2 or external environmental conditions. In one embodiment, any one of the one or more sensor modules includes a second cover. 222 The optical sensor 304 is disposed in the internal space of the second housing 22 corresponding to the optical sensor 304. The optical sensor 304 may be aligned with an opening provided in the display 25 or may be at least partially inserted into the opening. External light reaches the optical sensor through the openings provided in the second cover 222 and the display 25 . The optical sensor 304 may include, for example, a proximity sensor or an illuminance sensor. The number or location of the optical sensors is not limited to the examples shown in the figures and may vary.

[0061] According to various embodiments, the optical sensor 304 is disposed in the internal space of the second housing 22 so as to overlap at least a portion of the display area of ​​the display 25 when viewed from above the second cover 222 . In this case, the sensing function of the optical sensor 304 is performed without the optical sensor 304 or the location of the optical sensor 304 being visually distinct (or exposed) or visible. In one embodiment, the optical sensor 304 is positioned behind or below or beneath the display 25 such that the optical sensor 304 or the location of the optical sensor 304 is not visually distinguishable (or exposed). In various embodiments, the optical sensor 304 may be provided on the back surface of the display 25, aligned with a recess, or at least partially inserted into a recess. Some areas of the display 25 that overlap at least partially with the optical sensor 304 may include a different pixel structure and / or wiring structure than other areas. For example, some areas of the display 25 that overlap at least partially with the optical sensor 304 have a different pixel density than other areas. The pixel structure and / or wiring structure formed in a region of the display 25 that at least partially overlaps with the optical sensor 304 reduces the loss of light between the outside and the optical sensor 304 . As another example, some areas of the display 25 that at least partially overlap with the optical sensor 304 may not have multiple pixels arranged therein.

[0062] According to various embodiments, various other sensors, including but not limited to optical sensors 304 such as proximity sensors or illuminance sensors, may be positioned corresponding to openings provided in the display 25, behind the display 25, or below the display 25. For example, an optical, electrostatic, or ultrasonic biometric sensor (e.g., a fingerprint sensor) may be positioned corresponding to an opening provided in the display 25, behind the display 25, or below the display 25. According to various embodiments, various sensors may be positioned corresponding to openings provided in the flexible display module 24, behind the flexible display module 24, or below the flexible display module 24.

[0063] According to various embodiments, the electronic device 2 may include various other sensors (e.g., a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a temperature sensor, or a humidity sensor), the locations of which may vary.

[0064] According to one embodiment, one or more camera modules may include one or more lenses, an image sensor, and / or an image signal processor. The one or more camera modules may include, for example, a first camera module 305, a second camera module 306, a third camera module 307, and / or a fourth camera module 308. According to one embodiment, the first camera module 305 is disposed in the interior space of the second housing 22 corresponding to the second cover 222 . The first camera module 305 may be aligned with or at least partially inserted into an opening provided in the display 25 . External light reaches the first camera module 305 through the opening in the second cover 222 and the display 25 . The opening in the display 25 that is aligned with or overlaps the first camera module 305 is provided in the form of a through hole, as exemplified in the figure. In various embodiments, the opening in the display 25 that aligns with or overlaps with the first camera module 305 is provided in the form of a notch.

[0065] According to various embodiments, the first camera module 305 is disposed in the internal space of the second housing 22 so as to overlap at least a portion of the display area of ​​the display 25 when viewed from above the second cover 222 . In this case, the first camera module 305 or the position of the first camera module 305 is not visually distinguished (or exposed) or visible, and the photographing function of the first camera module 305 is performed. In one embodiment, the first camera module 305 is positioned behind or below or beneath the display 25, and the first camera module 305 or the position of the first camera module 305 may not be visually distinct (or exposed) or visible. In various embodiments, the first camera module 305 may be aligned with or at least partially inserted into a recess provided in the rear surface of the display 25 .

[0066] The first camera module 305 may include, for example, a hidden behind-the-display camera (eg, an under-display camera (UDC)). A region of the display 25 that overlaps at least a portion with the first camera module 305 may include a pixel structure and / or wiring structure that is different from other regions. For example, a region of the display 25 that at least partially overlaps the first camera module 305 has a different pixel density than other regions. The pixel structure and / or wiring structure formed in a region of the display 25 that at least partially overlaps with the first camera module 305 reduces light loss between the outside and the optical sensor. As another example, a region of the display 25 that at least partially overlaps with the first camera module 305 may not have a plurality of pixels arranged therein.

[0067] According to an embodiment, the second camera module 306 , the third camera module 307 , or the fourth camera module 308 is disposed in the interior space of the first housing 21 corresponding to the first cover 212 . First cover 212 includes camera cover portions (for example, camera decoration portions) arranged corresponding to second camera module 306, third camera module 307, and fourth camera module 308. The camera cover portion includes a camera hole (or light-transmitting area) provided corresponding to the second camera module 306, a camera hole (or light-transmitting area) provided corresponding to the third camera module 307, and a camera hole (or light-transmitting area) provided corresponding to the fourth camera module 308. The number and positions of the camera modules provided corresponding to the first cover 213 are not limited to the examples shown in the drawings, and may vary.

[0068] A second camera module 306, a third camera module 307, and Fourth The camera modules 308 may have different attributes (eg, angle of view) or capabilities. A second camera module 306, a third camera module 307, and Fourth The camera modules 308 may provide different angles of view (or lenses with different angles of view), and the electronic device 2 selectively uses the camera modules based on a user selection of the angle of view. A second camera module 306, a third camera module 307, and Fourth Camera Module 30 of 8Any one of them may include a wide-angle camera module, a telephoto camera module, a color camera module, a monochrome camera module, or an IR (infrared) camera (e.g., a TOF (time of flight) camera, a structured light camera) module. In various embodiments, the IR camera module may operate as at least a part of the sensor module.

[0069] According to one embodiment, any one of the one or more light emitting modules includes a flash 309 arranged in the internal space of the first housing 21 corresponding to a flash hole (or light transmitting area) provided in the camera cover portion of the first cover 212. Flash 309 includes a light source for second camera module 306, third camera module 307, and / or fourth camera module 308. The flash 309 may include, for example, a light emitting diode (LED) or a xenon lamp. According to various embodiments, any one of the one or more light emitting modules (e.g., an LED, an IR LED, or a Zenon lamp) may be configured to provide status information of the electronic device 2 in the form of light. In various embodiments, the light emitting module can provide a light source that is coordinated with the operation of the first camera module 305 .

[0070] According to one embodiment, the one or more input modules may include a first key input device 310 or a second key input device 311 . In the illustrated example, the first key input device 310 or the second key input device 311 is disposed in an opening provided on a first side of the first frame 211 . The location or number of input modules is not limited to the example shown in the figure and may vary. In various embodiments, the electronic device 2 may not include some or all of the key input devices, and the key input devices that are not included may be embodied as soft keys via the flexible display module 24 or the display 25. In various embodiments, the input module or key input device may include at least one sensor module.

[0071] Any one of the one or more connection terminal modules (or connector modules or interface terminal modules) includes, for example, a connector (or interface terminal) arranged inside the electronic device 2 corresponding to a connector hole 312 formed on the exterior of the electronic device 2. In the illustrated example, the connector hole 312 is provided on the first side of the first frame 211 . The position or number of the connection terminal modules is not limited to the example shown in the drawings, and may vary. The electronic device 2 transmits and / or receives power and / or data to and from an external electronic device electrically connected to the connector. In one embodiment, the connector may include a USB connector or an HDMI connector. In various embodiments, any one of the one or more connection terminal modules includes an audio connector (e.g., a headphone connector or an iPod connector) and a connector hole provided on the exterior of the electronic device 2 corresponding to the audio connector. In various embodiments, any one of the one or more connection terminal modules may include a memory card connector disposed inside the electronic device 2 and a connector hole formed on the exterior of the electronic device 2 corresponding to the memory card connector.

[0072] According to various embodiments, electronic device 2 may include a detachable pen input device (eg, an electronic pen, digital pen, or stylus pen) (not shown). The pen input device may be implemented so as to be insertable into the internal space of the first housing 21 or the second housing 22, for example. As another example, the pen input device may be detachably attached to the hinge housing 23 . The hinge housing 23 may include a recess into which the pen input device may be sandwiched.

[0073] The electronic device 2 may further include various components depending on the form in which it is provided. These components may vary depending on the convergence trend of the electronic device 2, and it is not possible to list them all, but the electronic device 2 may further include additional components of a similar level to the components mentioned above. In various embodiments, certain components may be omitted or replaced with other components, depending on the implementation.

[0074] FIG. 4 is a partially exploded perspective view of an electronic device 2 in an unfolded state according to one embodiment of the present invention, FIG. 5 is a diagram showing a foldable housing 20 in an electronic device 2 in an unfolded state according to one embodiment of the present invention, and FIG. 6 is a cross-sectional view 601 showing an unfolded state of the electronic device 2 according to one embodiment of the present invention, and a cross-sectional view 602 showing a folded state of the electronic device 2.

[0075] 4 and 5, the electronic device 2 includes a flexible display module 24 and a foldable housing 20. According to one embodiment, the foldable housing 20 includes a first frame 211, a second frame 221, a first hinge module (or first hinge assembly) 5A, a second hinge module (or second hinge assembly) 5B, a third hinge module (or third hinge assembly) 5C, a hinge housing 23, a first plate 61, and / or a second plate 62.

[0076] According to one embodiment, the first frame 211 includes a first support portion 411 and a first side 412 . The first frame 211 is provided in an integrated form including a first support portion 411 and a first side 412 . The first support portion 411 is an internal structure located inside the electronic device 2 corresponding to the first housing 21, and in various embodiments, may be referred to by various other terms such as 'first bracket', 'first support', 'first support member', or 'first support structure'. The second frame 221 includes a second support portion 421 and a second side 422 . The second frame 221 is provided in an integrated form including a second support portion 421 and a second side 422 . The second support portion 421 is an internal structure located inside the electronic device 2 corresponding to the second housing 22, and in various embodiments may be referred to by various other terms such as 'second bracket', 'second support', 'second support member', or 'second support structure'. At least a portion of the first frame 211 and / or at least a portion of the second frame 221 is made of a metallic material and / or a non-metallic material (eg, a polymer). Electrical components (or electronic parts) or various members related to the electrical components are disposed on the first frame 211 or the first support portion 411 or are supported by the first frame 211 or the first support portion 411 .

[0077] The first support portion 411 includes, for example, a first support region 411A facing the first display region (circled number 1), and a third support region (not shown) facing in a direction substantially opposite to the first support region 411A. The first display area (circled number 1) of the flexible display module 24 is disposed in the first support area (411A) of the first support part 411. The second support portion 421 includes, for example, a second support region 421A facing the second display region (circled number 2) and a fourth support region (not shown) facing in a direction substantially opposite to the second support region 421A. The second display area (circled number 2) of the flexible display module 24 is disposed in the second support area 421A of the second support part 421. The first display area (circled number 1) is disposed on the first support part 411, and the second display area (circled number 2) is disposed on the second support part 421 via various adhesive materials (or adhesive substances) such as a heat-reactive adhesive material (or heat-reactive adhesive material), a light-reactive adhesive material (or light-reactive adhesive material), a general adhesive (or general adhesive), and / or double-sided tape.

[0078] According to one embodiment, the 'hinge portion' referred to in the description with reference to Figures 2 and 3 includes a first plate 61, a second plate 62, a first hinge module 5A, a second hinge module 5B, and / or a third hinge module 5C. The hinge portion supports a third display area (circled number 3) of the flexible display module 24 when the electronic device 2 is in the unfolded state.

[0079] According to various embodiments, the electronic device 2 includes a first internal support disposed in the internal space of the first housing 21 (see FIG. 2) corresponding to (or facing) the first cover 212 (see FIG. 2). The first internal support covers and protects components, such as a printed circuit board, disposed between the first support portion 411 and the first cover 212 . In various embodiments, the first internal support may include a non-metallic material, and the first internal support may have a conductive pattern disposed thereon that is used as an antenna radiator. The first frame 211 may be referred to as a 'first front case', and the first internal support may be referred to as a 'first rear case'.

[0080] According to various embodiments, the electronic device 2 includes a second internal support disposed in the internal space of the second housing 22 (see FIG. 2) corresponding to (or facing) the second cover 222 (see FIG. 2). The second internal support may be, for example, a second support 421. No. 2 It covers and protects components such as a printed circuit board disposed between the cover 222. The second frame 221 may be referred to as a 'second front case', and the second inner support may be referred to as a 'second rear case'.

[0081] According to one embodiment, looking at a cross-sectional view 24S of the flexible display module 24, the flexible display module 24 includes a flexible display 240, a transparent cover 245, an optically transparent adhesive member (or an optically transparent adhesive member) 246, and / or a support sheet 247. For example, the flexible display 240 may be coupled to the transparent cover 245 via an optically clear adhesive member 246 (for example, an optical clear adhesive (OCA), an optical clear resin (OCR), or a super view resin (SVR)). The transparent cover 245 (eg, a window) covers the flexible display 240 to protect the flexible display 240 from the outside. The transparent cover 245 is provided in the form of a flexible thin film (for example, a thin film layer). The transparent cover 245 may include, for example, a plastic film (e.g., a polyimide (PI) film) or thin-film glass (e.g., ultra-thin glass (UTG)). In one embodiment, the crystal cover 245 may include multiple layers. For example, the transparent cover 245 may be in the form of a plastic film or thin glass with various coating layers disposed thereon.

[0082] The transparent cover 245 may be in the form of, for example, at least one protective or coating layer comprising a polymer material (e.g., PET (polyester), PI (polyimide), or TPU (thermoplastic polyurethane)) disposed on a plastic film or thin glass. In one embodiment, the transparent cover 245 and the optically transparent adhesive member 246 may be defined or interpreted as part of the flexible display 240 . In one embodiment, the transparent cover 246 may be construed as part of the foldable housing 20 (see FIG. 2) that is not the flexible display module 24. The flexible display 240 includes, for example, a display panel 241, a base film 242, a bottom panel 243, and / or an optical layer 244. The display panel 241 is disposed between the optical layer 244 and the base film 242 . The base film 242 is disposed between the display panel 241 and the lower panel 243 . The optical layer 244 is disposed between the optical transparent adhesive member 246 and the display panel 241 . Various polymer adhesive materials (or adhesive members) or bonding materials (or adhesive members) may be disposed between the display panel 241 and the base film 242, between the base film 242 and the lower panel 243, and / or between the display panel 241 and the optical layer 244.

[0083] The display panel 241 includes, for example, a light-emitting layer 241a, a thin film transistor (TFT) film (or TFT substrate) 241b, and / or an encapsulation layer (for example, thin-film encapsulation (TFE)) 241c. The light-emitting layer 241a includes a plurality of pixels implemented with light-emitting elements such as organic light-emitting diodes (OLEDs) or micro LEDs. The light-emitting layer 241a is disposed on the TFT film 241b via organic evaporation. The TFT film 241b is disposed between the light-emitting layer 241a and the base film 242. The TFT film 241b indicates a film structure in which at least one TFT is disposed on a flexible substrate (for example, a PI film) through a series of processes such as deposition, patterning, and / or etching. At least one TFT controls the current to the light emitting element in the light emitting layer 241a to turn the pixel on or off or adjust the brightness of the pixel. At least one TFT may be implemented, for example, as an a-Si (amorphous silicon) TFT, an LCP (liquid crystalline polymer) TFT, an LTPO (low-temperature polycrystalline oxide) TFT, or an LTPS (low-temperature polycrystalline silicon) TFT.

[0084] In one embodiment, the display panel 241 may include a storage capacitor that can maintain a voltage signal to the pixel, maintain the voltage applied to the pixel within one frame, or reduce the change in the gate voltage of the TFT due to leakage current during the light-emitting time. Depending on the routine (eg, initialization, data write) that controls at least one TFT, the storage capacitor maintains the voltage applied to the pixel for a certain period of time. In one embodiment, the display panel 241 is implemented based on an OLED, and an encapsulating layer 241c covers the light-emitting layer 241a. The light-emitting organic materials and electrodes in an OLED are highly sensitive to oxygen and / or moisture and may lose their luminescent properties, so to reduce or prevent this, the encapsulation layer 241c seals the emitting layer 241a to prevent oxygen and / or moisture from penetrating into the OLED.

[0085] The base film 242 includes a flexible film formed from a polymer or plastic such as polyimide or polyester (PET). The base film 242 serves to support and protect the display panel 241 . In one embodiment, the base film 242 may be referred to as a protective film, a back film, or a back plate. The bottom panel 243 may include multiple layers for various functions. Various polymeric adhesive members (or bonding members) (not shown) may be disposed between the multiple layers included in the lower panel 243 .

[0086] The lower panel 243 includes, for example, a light-shielding layer 243a, a buffer layer 243b, and / or a lower layer 243c. The light-shielding layer 243a is disposed between the base film 242 and the buffer layer 243b. The buffer layer 243b is disposed between the light-shielding layer 243a and the lower layer 243c. The light-shielding layer 243a blocks at least a portion of the light incident from the outside. For example, the light-shielding layer 243a includes an embossed layer. The embossed layer can be a black layer containing a pattern of depressions and protrusions. The buffer layer 243b absorbs external shocks applied to the flexible display 240. For example, the buffer layer 243b may include a sponge layer or a cushion layer. The lower layer 243c diffuses, distributes, or dissipates heat generated by the electronic device 2 or the flexible display 240. The lower layer 243c absorbs or blocks electromagnetic waves. The lower layer 243c cushions the electronic device 2 or the flexible display 240 from external impact.

[0087] For example, the bottom layer 243c includes a composite sheet 243d or a copper sheet 243e. In one embodiment, the composite sheet 243d may be a sheet made by combining layers or sheets having different properties. For example, the composite sheet 243d may include at least one of polyimide or graphite. Composite sheet 243d can also be replaced with a single sheet comprising one material (eg, polyimide or graphite). The composite sheet 243d is disposed between the buffer layer 243b and the copper sheet 243e. The copper sheet 243e can also be replaced with a variety of other metal sheets. In one embodiment, at least a portion of the lower layer 243c is a conductive member (e.g., a metal plate) that can help reinforce the rigidity of the electronic device 2, shield ambient noise, and dissipate heat emitted from surrounding heat-emitting components (e.g., display drive integrated circuits) (e.g., DDIs). The conductive member may include, for example, at least one of copper (Cu), aluminum (Al), stainless steel (SUS), or CLAD (for example, a laminated member in which SUS and Al are alternately arranged).

[0088] The lower layer 243c may include a variety of other layers for a variety of functions. In one embodiment (not shown), at least one additional polymer layer (eg, a layer including PI, PET, or TPU) may be disposed on the rear surface of the display panel 241 in addition to the base film 242 . In one embodiment, at least one of the layers included in the lower panel 243 (eg, the light-shielding layer 243a, the buffer layer 243b, the composite sheet 243d, and the copper sheet 243e) may be omitted. In one embodiment, the arrangement order of the layers included in the lower panel 243 is not limited to the illustrated embodiment and may be variously changed.

[0089] The optical layer 244 includes, for example, a polarizing layer (or polarizer) or a retardation layer (or retarder). The polarizing layer and the phase retardation layer can improve the outdoor viewability of the screen. The optical layer 244 selectively transmits light that is generated from a light source of the display panel 241 and vibrates in a certain direction. In one embodiment, a single layer may be provided that combines the polarizing layer and the phase retardation layer, and such a layer may be interpreted as a 'circular polarizing layer'. The optically transparent adhesive member 246 is disposed between the transparent cover 245 and the optical layer 244 . In one embodiment, the polarizing layer (or circular polarizing layer) can be omitted, in which case a black pixel defining layer (PDL) and / or a color filter is provided to replace the polarizing layer.

[0090] The electronic device 2 may include touch detection circuitry (eg, a touch sensor) (not shown). The touch detection circuitry is implemented as a transparent conductive layer (or film) based on various conductive materials such as indium tin oxide (ITO). In one embodiment, the touch detection circuitry is disposed between the transparent cover 245 and the optical layer 244 (eg, add-on type). In other embodiments, the touch detection circuitry may be disposed between the optical layer 244 and the display panel 241 (eg, on-cell type). In other embodiments, the display panel 241 may include touch detection circuitry or functionality (eg, in-cell type).

[0091] In one embodiment, the display panel 241 is OLED-based and includes an encapsulating layer 241c disposed between the light-emitting layer 241a and the optical layer 244. The sealing layer 241c serves as a pixel protection layer for protecting the pixels of the light-emitting layer 241a. In one embodiment (not shown), the flexible display 240 may include a conductive pattern such as a metal mesh (e.g., aluminum metal mesh) as a touch detection circuit disposed in the encapsulation layer 241c between the encapsulation layer 241c and the optical layer 244. For example, in response to the bending of the flexible display 240, a metal mesh may have greater durability than a transparent conductive layer embodied in ITO. In one embodiment, the flexible display 240 may further include a pressure sensor (not shown) capable of measuring the strength (pressure) of a touch. The layers included in the display panel 241 or the lower panel 243, their stacking structure or stacking order may vary. The flexible display 240 may be implemented by omitting some of its components or adding other components depending on its implementation form or the trend of convergence.

[0092] According to one embodiment, a support sheet (or support plate or support layer) 247 may be disposed on the back of the flexible display 240 . The rear surface of the flexible display 240 is the surface located opposite to the surface from which light is emitted from the display panel 241 including a plurality of pixels. The support sheet 247 covers at least a portion of the lower panel 243 of the flexible display 240 and is disposed (eg, attached) to the rear surface of the lower panel 243 . The support sheet 247 is connected to the lower panel 243 via an adhesive or bonding material. The adhesive material (or bonding material) between the flexible display 240 and the support sheet 247 may include, for example, a heat-reactive adhesive material (or heat-reactive adhesive material), a light-reactive adhesive material (or light-reactive adhesive material), a general adhesive (or general adhesive), or double-sided tape. As another example, the adhesive may include organic adhesives such as various polymers or sealants, such as triazine thiols, dithiopyrimidines, or silane-based compounds.

[0093] The support sheet 247 contributes to the durability (for example, stiffness reinforcement) of the flexible display module 24. The support sheet 247 can reduce the influence of the load or stress generated when the foldable housing 20 (see FIG. 2) is folded on the flexible display module 24. The support sheet 247 can reduce or prevent damage to the flexible display module 24 due to the force transmitted when the foldable housing 20 is folded. In one embodiment, the support sheet 247 comprises a metallic material. The support sheet 247 comprises, for example, stainless steel. Support sheet 247 may also include a variety of other metallic materials. In various embodiments, the support sheet 247 can include an engineering plastic.

[0094] According to one embodiment, the support sheet 247 includes a lattice structure (not shown) that at least partially overlaps the third display area (circled number 3) of the flexible display module 24 . The lattice structure may, for example, include a plurality of openings (or slits) provided in the support sheet 247 . The lattice structure refers to a pattern structure in which a plurality of openings are regularly arranged. The plurality of openings are periodically formed, have substantially the same shape, and are repeatedly arranged at regular intervals. The lattice structure can reduce the bending degradation in the third display area (circled number 3). In various embodiments, a lattice structure including a plurality of openings may be referred to by other terms such as an 'opening pattern', a 'hole pattern', or a 'lattice pattern'.

[0095] In various embodiments, the support sheet 247 may include a recess pattern (not shown) that replaces the lattice structure and includes a plurality of recesses. The recess pattern refers to a pattern structure in which a plurality of recesses having a regular arrangement are provided, for example, on a first surface of the support sheet 247 facing the lower panel 243 of the flexible display 240, or on a second surface of the support sheet 247 arranged on the opposite side to the first surface. In various embodiments, the lattice structure or recess pattern extends to portions of the support sheet 247 corresponding to the first region (circled number 1) and / or the second region (circled number 2) of the flexible display module 24. In various embodiments, the support sheet 247, including the lattice structure or recess pattern, or the corresponding conductive member thereto, may be provided in multiple layers.

[0096] According to various embodiments, the support sheet 247 can reduce electro magnetic interference (EMI) associated with the flexible display 240 . In one embodiment, the support sheet 247 can diffuse or dissipate heat emitted from heat-dissipating components (eg, display drive integrated circuits (DDIs) or display drive circuits such as DDI chips). According to various embodiments, the support sheet 247 can be omitted. According to various embodiments, the support sheet 247 can be construed as a separate element from the flexible display module 24 .

[0097] According to one embodiment, the first hinge module 5A, the second hinge module 5B, and the third hinge module 5C connect the first frame 211 and the second frame 221. The first frame 211 and the second frame 221 are connected to each other so as to be rotatable with respect to each other via a first hinge module 5A, a second hinge module 5B, and a third hinge module 5C. The first hinge module 5A, the second hinge module 5B, and the third hinge module 5C are arranged along the center line (A) of the electronic device 2, and the third hinge module 5C is arranged between the first hinge module 5A and the second hinge module 5B. In one embodiment, the third hinge module 5C is positioned corresponding to the center between the first hinge module 5A and the second hinge module 5B (e.g., at a point on the center line (A) that is substantially the same distance as the first hinge module 5A and the second hinge module 5B). In various embodiments, the number or positions of the hinge modules arranged corresponding to the center line (A) of the electronic device 2 are not limited to the examples shown in the drawings, and may vary.

[0098] According to one embodiment, the first hinge module 5A includes, for example, a first bracket 51A, a second bracket 52A, and / or a bracket connector 53A. The first bracket 51A can be disposed or coupled to the first support region 411A of the first frame 211 via screw fastening. For screw fastening, the first bracket 51A includes one or more screw holes, and in the first support region 411A, the first bracket 51A includes one or more screw fastening portions aligned in one-to-one correspondence with the one or more screw holes. The screw fastener may be a boss that includes a female thread that corresponds to the male thread of the screw.

[0099] The first bracket 51A of the first hinge module 5A and the first support region 411A of the first frame 211 are provided in a mating manner so as to be stably coupled to each other. The second bracket 52A is disposed on or coupled to the second support region 421A of the second frame 221 via screw fastening. For screw fastening, the second bracket 52A includes one or more screw holes, and in the second support region 421A, the second bracket 52A includes one or more screw fastening portions aligned in one-to-one correspondence with the one or more screw holes. The second bracket 52A of the first hinge module 5A and the second support region 421A of the second frame 221 are provided in a mating manner so as to be stably coupled to each other. The bracket connecting portion 53A connects the first bracket 51A and the second bracket 52A. The first bracket 51A and the second bracket 52A rotate relative to the bracket connecting portion 53A.

[0100] According to one embodiment, the bracket connection portion 53A may be configured so that the first frame 211 to which the first bracket 51A is fixed and the second frame 221 to which the second bracket 52A is fixed are rotated in opposite directions to each other at the same angle. The bracket connection portion 53A may be configured so that the first frame 211 to which the first bracket 51A is fixed and the second frame 221 to which the second bracket 52A is fixed can be rotated at at least one specified angle and maintained. The bracket connecting portion 53A can have, for example, a free-stop function. The bracket connector 53A may be configured to provide a force that rotates the first frame 211 to which the first bracket 51A is fixed and the second frame 221 to which the second bracket 52A is fixed relative to each other.

[0101] The second hinge module 5B may be provided substantially identical to the first hinge module 5A and may include, for example, a first bracket 51B, a second bracket 52B, and / or a bracket linkage 53B. In one embodiment, the second hinge module 5B is provided in the electronic device 2 in an orientation opposite to that of the first hinge module 5A. The first bracket 51B of the second hinge module 5B is disposed on or coupled to the second support region 421A of the second frame 221, and the second bracket 52B of the second hinge module 5B is disposed on or coupled to the second support region 421A of the first frame 221. 211 The first support region 411A is disposed on or coupled to the first support region 411A.

[0102] The third hinge module 5C may be provided substantially identical to the first hinge module 5A and may include, for example, a first bracket 51C, a second bracket 52C, and / or a bracket linkage portion 53C. In one embodiment, the third hinge module 5C is provided in the electronic device 2 in the same orientation as the second hinge module 5B. The first bracket 51C of the third hinge module 5C is disposed on or coupled to the second support area 421A of the second frame 221, and the second bracket 52C of the third hinge module 5C is disposed on or coupled to the first support area 411A of the first frame 211. In one embodiment, the third hinge module 5C is provided in the electronic device 2 in the same orientation as the first hinge module 5A.

[0103] According to one embodiment, the first hinge module 5A, the second hinge module 5B, and the third hinge module 5C are coupled to the hinge housing 23 via screws. The hinge housing 23 is connected to the first frame 211 and the second frame 221 via the first hinge module 5A, the second hinge module 5B, and the third hinge module 5C. For screw fastening, the bracket connection portion 53A of the first hinge module 5A includes one or more screw holes, and the hinge housing 23 includes one or more screw fastening portions aligned in one-to-one correspondence with the one or more screw holes of the bracket connection portion 53A. For screw fastening, the bracket connection portion 53B of the second hinge module 5B includes one or more screw holes, and the hinge housing 23 includes one or more screw fastening portions aligned in one-to-one correspondence with the one or more screw holes of the bracket connection portion 53B. For screw fastening, the bracket connection portion 53C of the third hinge module 5C includes one or more screw holes, and the hinge housing 23 includes one or more screw fastening portions aligned in one-to-one correspondence with the one or more screw holes of the bracket connection portion 53C.

[0104] According to one embodiment, the first plate 61 is disposed corresponding to the first frame 211 , and the second plate 62 is disposed corresponding to the second frame 221 . The first plate 61 and the second plate 62 may have a shape in which the first width in the direction of the center line (A) (e.g., the y-axis direction) is relatively larger than the second width in a direction perpendicular to the above direction, and overlap with the first hinge module 5A, the second hinge module 5B, and the third hinge module 5C. The first plate 61 and the second plate 62 can be coupled to the first hinge module 5A, the second hinge module 5B, and the third hinge module 5C via screw fastening.

[0105] According to an embodiment, the first plate 61 corresponds to the first bracket 51A of the first hinge module 5A and is coupled to the bracket connecting portion 53A of the first hinge module 5A via a screw. For screw fastening, the first plate 61 includes a first screw hole SH11, and the bracket connecting portion 53A includes a first screw fastening portion B11 aligned to correspond to the first screw hole SH11. The portion of the first plate 61 that corresponds to the bracket connecting portion 53A of the first hinge module 5A and the bracket connecting portion 53A are provided in a mating shape that allows them to be stably coupled to each other. The second plate 62 corresponds to the second bracket 52A of the first hinge module 5A and is coupled to the bracket connecting portion 53A of the first hinge module 5A via a screw. For screw fastening, the second plate 62 includes second screw holes SH12, and the bracket connecting portion 53A includes second screw fastening portions B12 aligned to correspond to the second screw holes SH12. The portion of the second plate 62 that corresponds to the bracket connecting portion 53A of the first hinge module 5A and the bracket connecting portion 53A are provided in a mating shape that allows them to be stably coupled to each other.

[0106] According to one embodiment, the first plate 61 is coupled to the second hinge module 5B in substantially the same manner as the coupling between the first plate 61 and the first hinge module 5A. The second plate 62 is coupled to the second hinge module 5B in substantially the same manner as the coupling between the second plate 62 and the first hinge module 5A. The first plate 61 corresponds to the second bracket 52B of the second hinge module 5B and is coupled to the bracket connecting portion 53B of the second hinge module 5B. The second plate 62 corresponds to the first bracket 51B of the second hinge module 5B and is coupled to the bracket connecting portion 53B of the second hinge module 5B.

[0107] According to one embodiment, the first plate 61 is coupled to the third hinge module 5C in substantially the same manner as the coupling between the first plate 61 and the first hinge module 5A. The second plate 62 is coupled to the third hinge module 5C in substantially the same manner as the coupling between the second plate 62 and the first hinge module 5A. The first plate 61 corresponds to the second bracket 52C of the third hinge module 5C and is coupled to the bracket connecting portion 53C of the third hinge module 5C. The second plate 62 corresponds to the first bracket 51C of the third hinge module 5C and is coupled to the bracket connecting portion 53C of the third hinge module 5C. In one embodiment, the third hinge module 5C is the first hinge module 5A When the electronic device 2 is provided in the same orientation as the first bracket 51C of the third hinge module 5C, the first plate 61 corresponds to the first bracket 51C of the third hinge module 5C. Third Hinge Module 5CThe second plate 62 corresponds to the second bracket 52C of the third hinge module 5C and is coupled to the bracket coupling portion 53C of the third hinge module 5C.

[0108] According to one embodiment, the first plate 61 includes a first surface 61A and a third surface (not shown) facing in the opposite direction from the first surface 61A. The second plate 62 includes a second surface 62A and a fourth surface (not shown) facing in the opposite direction to the second surface 62A. The first surface 61A and the second surface 62A are located corresponding to the third display area (circled number 3) of the flexible display module 24. In the unfolded state of the electronic device 2 (see FIG. 2), the first surface 61A of the first plate 61 and the second surface 62B of the second plate 62 support a third display area (circled number 3). The first surface 61A of the first plate 61 includes a plane that supports one side area of ​​the third display area (circled number 3) based on the center line (A) of the electronic device 2 when the electronic device 2 is in the unfolded state. The second surface 62A of the second plate 62 includes a plane that supports the other side area of ​​the third display area (circled number 3) based on the center line (A) of the electronic device 2 when the electronic device 2 is in the unfolded state. When the electronic device 2 is unfolded, the first surface 61A of the first plate 61 and the second surface 62A of the second plate 62 form an angle of substantially 180 degrees and are arranged with no substantial height difference. When the electronic device 2 is in an unfolded state, even if an external force (e.g., external pressure such as touch input using a user's finger or touch input using an electronic pen) is applied to the third display area (circled number 3), the third display area (circled number 3) is maintained flat without sagging due to the support of the first plate 61 and the second plate 62.

[0109] According to one embodiment, when the electronic device 2 is switched from the unfolded state (see FIG. 2) to the folded state (see FIG. 3), the hinge portion may be configured to provide a space in which the third display area (circled number 3) of the flexible display module 24 is positioned in a bent shape that can reduce bending stress. When the electronic device 2 is switched from the unfolded state to the folded state, the hinge portion may be configured to provide a space in which the third display area (circled number 3) is positioned in a bent shape that can reduce the buckling phenomenon. In one embodiment, when the electronic device 2 is switched from the unfolded state to the folded state, the third display area (circled number 3) is arranged in a drop or dumbbell shape, which can reduce breakage or permanent deformation. When the electronic device 2 is folded, the third display area (circled number 3) is arranged in a bent shape that can reduce the collision (e.g., bending stress) between the compressive stress generated in one side area of ​​the third display area (circled number 3) and the tensile stress generated in one side area of ​​the third display area (circled number 3) based on the neutral plane 613 (see Figure 6).

[0110] 4 and 6, the electronic device 2 includes a flexible display module 24, a first frame 211, a second frame 221, a first hinge module 5A, a first plate 61, and / or a second plate 62. In one embodiment, the first hinge module 5A includes a first bracket 51A, a second bracket 52A, a first portion 810, a second portion 820, a third portion 830, and a fourth portion 840. The bracket connector 53A (see FIG. 4) includes a first portion 810, a second portion 820, a third portion 830, and / or a fourth portion 840.

[0111] According to one embodiment, the first hinge module 5A includes a first axis of rotation C1 and a second axis of rotation C2 for relative rotational movement between the first bracket 51A and the bracket connector 53A. The first rotation axis C1 and the second rotation axis C2 are substantially parallel to the center line (A) of the electronic device 2 and are spaced apart from each other. The first portion 810 of the bracket connecting portion 53A is connected to the first bracket 51A so as to be rotatable about a first rotation axis C1. The first portion 810 of the bracket connecting portion 53A may be slidably connected to the first bracket 51A so as to be capable of linear movement in a first linear direction (LD1) relative to the first bracket 51A. The second portion 820 of the bracket connecting portion 53A can be connected to the first bracket 51A rotatably about the second rotation axis C2. The second portion 820 of the bracket connecting portion 53A is slidably connected to the first bracket 51A so as to be capable of linear movement relative to the first bracket 51A in a second linear direction (LD2) different from the first linear direction (LD1). The first linear direction (LD1) is perpendicular to the first rotation axis C1 or the center line (A) of the electronic device 2, and the second linear direction (LD2) is perpendicular to the second rotation axis C2 or the center line (A) of the electronic device 2. In one embodiment, when viewed from the direction of the center line (A) of the electronic device 2 (e.g., when viewed from the y-axis direction), the second linear direction (LD2) is substantially parallel to the direction in which the first display area (circled number 1) of the flexible display module 24 extends flat, and forms an acute angle with the first linear direction (LD1).

[0112] According to one embodiment, the first hinge module 5A includes a third rotation axis C3 and a fourth rotation axis C4 for mutual rotational movement between the second bracket 52A and the bracket connector 53A. The third rotation axis C3 and the fourth rotation axis C4 are substantially parallel to the center line (A) (see FIG. 4) of the electronic device 2 and are positioned apart from each other. The third portion 830 of the bracket connecting portion 53A is connected to the second bracket 52A so as to be rotatable about a third rotation axis C3. The third portion 830 of the bracket connecting portion 53A is slidably connected to the second bracket 52A so as to be capable of linear movement in the third linear direction (LD3) relative to the second bracket 52A. The fourth portion 840 of the bracket connecting portion 53A is connected to the second bracket 52A so as to be rotatable about a fourth rotation axis C4. The fourth portion 840 of the bracket connecting portion 53A is slidably connected to the first bracket 52A so as to be capable of linear movement relative to the second bracket 52A in a fourth linear direction (LD4) different from the third linear direction (LD3). The third linear direction (LD3) is perpendicular to the third rotation axis C3 or the center line (A) of the electronic device 2, and the fourth linear direction (LD4) is perpendicular to the fourth rotation axis C4 or the center line (A) of the electronic device 2. In one embodiment, when viewed from the direction of the center line (A) of the electronic device 2 (e.g., when viewed from the y-axis direction), the fourth linear direction (LD4) is substantially parallel to the direction in which the second display area (circled number 2) of the flexible display module 24 extends flat, and forms an acute angle with the third linear direction (LD3).

[0113] According to one embodiment, the first hinge module 5A includes a first linear motion guide LMG1 that enables the first portion 810 and the first bracket 51A to slide relative to each other (e.g., move linearly relative to each other) in a first linear direction (LD1). The first linear motion guide (LMG1) includes, for example, a first linear motion guide rail provided on the first bracket 51A, and a part of the first part 810 (e.g., a first linear motion slider) slidably arranged on the first linear motion guide rail. The first portion 810 and the first bracket 51A are connected by a first linear motion guide LMG1 so as to be slidable relative to each other in a first linear direction LD1. The first hinge module 5A includes a second linear motion guide (LMG2) that allows the second portion 820 and the first bracket 51A to slide relative to each other (eg, move linearly relative to each other) in a second linear direction (LD2). The second linear motion guide (LMG2) includes, for example, a second linear motion guide rail provided on the first bracket 51A and a part of the second part 820 (e.g., a second linear motion slider) slidably arranged on the second linear motion guide rail. The second portion 820 and the first bracket 51A are connected by a second linear motion guide LMG2 so as to be slidable relative to each other in a stable manner in a second linear direction LD2.

[0114] According to one embodiment, the first hinge module 5A includes a third linear motion guide (LMG3) that enables the third portion 830 and the second bracket 52A to slide relative to each other (e.g., move linearly relative to each other) in a third linear direction (LD3). The third portion 830 and the second bracket 52A are connected to each other by a third linear motion guide LMG3 so as to be slidable relative to each other stably in a third linear direction LD3. The first portion 810 and the third portion 830, and the first linear motion guide (LMG1) and the third linear motion guide (LMG3) may be provided substantially symmetrically with respect to the center line (A) of the electronic device 2. The first hinge module 5A includes a fourth linear motion guide (LMG4) that allows the fourth portion 840 and the second bracket 52A to slide relative to each other (eg, move linearly relative to each other) in a fourth linear direction (LD4). The fourth portion 840 and the second bracket 52A are connected to each other by a fourth linear motion guide LMG4 so as to be slidable relative to each other in a fourth linear direction LD4. The second portion 820 and the fourth portion 840, and the second linear motion guide (LMG2) and the fourth linear motion guide LMG4 may be provided substantially symmetrically with respect to the center line (A) of the electronic device 2. According to one embodiment, the first plate 61 is disposed or coupled to a first portion 810 of the bracket coupling portion 53A, and the second plate 62 is disposed or coupled to a third portion 830 of the bracket coupling portion 53A.

[0115] According to one embodiment, when the electronic device 2 switches between the unfolded state (see reference numeral '601') and the folded state (see reference numeral '602'), there may be a rotational movement of the first part 810 based on the first rotation axis C1, a first mutual linear movement (or first mutual sliding) between the first part 810 and the first bracket 51A via the first linear motion guide (LMG1), a rotational movement of the second part 820 based on the second rotation axis C2, and a second mutual linear movement (or second mutual sliding) between the second part 820 and the first bracket 51A via the second linear motion guide (LMG2). When the electronic device 2 is transformed between the unfolded state and the folded state, there may be a rotational movement of the third part 830 based on the third rotation axis C3, a third mutual linear movement (or third mutual sliding) between the third part 830 and the second bracket 52A via the third linear motion guide (LMG3), a rotational movement of the fourth part 840 based on the fourth rotation axis C4, and a fourth mutual linear movement (or fourth mutual sliding) between the fourth part 840 and the second bracket 52A via the fourth linear motion guide (LMG4).

[0116] According to one embodiment, when the electronic device 2 is switched from an unfolded state (see reference numeral '601') to a folded state (see reference numeral '602'), the first rotation axis C1 and the second rotation axis C2 are positioned farther away from the first frame 211 to which the first bracket 51A is fixed compared to the unfolded state of the electronic device 2. When the electronic device 2 is switched from the unfolded state to the folded state, the first portion 810 to which the first plate 61 is fixed is positioned backward relative to the first bracket 51A in the direction opposite to the direction toward the third display area (circled number 3) of the flexible display module 24. When the electronic device 2 is switched from the unfolded state to the folded state, the third rotation axis C3 and the fourth rotation axis C4 are positioned farther away from the second frame 221 to which the second bracket 52A is fixed compared to when the electronic device 2 is unfolded. When the electronic device 2 is switched from the unfolded state to the folded state, the third portion 830 to which the second plate 62 is fixed is positioned backward relative to the second bracket 52A in a direction opposite to the direction toward the third display area (circled number 3) of the flexible display module 24.

[0117] When the electronic device 2 is switched from the unfolded state to the folded state, the first surface 61A of the first plate 61 and the second surface 62A of the second plate 62 are positioned facing each other and spaced apart from each other. When the electronic device 2 is switched from the unfolded state to the folded state, the first part 810 retracts relative to the first bracket 51A and the third part 830 retracts relative to the second bracket 52A, so that the first plate 61 coupled to the first part 810 and the second plate 62 coupled to the third part 830 are positioned so as not to interfere with the third display area (circled number 3) of the flexible display module 24. When the electronic device 2 is switched from the unfolded state to the folded state, the retraction of the first part 810 relative to the first bracket 51A and the retraction of the third part 830 relative to the second bracket 52A provides a space width in the first direction 611 between the first surface 61A of the first plate 61 and the second surface 62A of the second plate 62 such that the third display area (circled number 3) can be arranged in a bent shape that can reduce bending stress and / or buckling phenomenon. When the electronic device 2 is switched from the unfolded state to the folded state, the first rotation axis C1 and the second rotation axis C2 move away from the first frame 211 in which the first display area (circled number 1) is located, and the third rotation axis C3 and the fourth rotation axis C4 move away from the second frame 221 in which the second display area (circled number 2) is located, which may result in the bracket connection portion 53A being positioned away in a second direction 612 perpendicular to the first direction 611 from the structure in which the first frame 211 and the second frame 221 face each other. When the electronic device 2 is switched from the unfolded state to the folded state, the bracket connection portion 53A is positioned away from the structure in which the first frame 211 and the second frame 221 face each other in the second direction 612, thereby providing a space width in the second direction 612 so that the third display area (circled number 3) can be arranged in a bent shape that can reduce bending stress and / or buckling phenomenon.

[0118] According to one embodiment, when the electronic device 2 is switched from the unfolded state to the folded state, the bracket connection portion 53A is positioned away from the first frame 211 and the second frame 221 in a structure in which they face each other, so that the hinge housing 23 connected to the bracket connection portion 53A is exposed to the outside through the open gap between the first housing 21 and the second housing 22, as shown in FIG. 3, while reducing the gap between the first housing 21 and the second housing 22. According to one embodiment, when the electronic device 2 is switched from a folded state (see reference numeral '602') to an unfolded state (see reference numeral '601'), the relative position change between the first frame 211 and the second frame 221, and the correspondingly operating first hinge module 5A, second hinge module 5B, and third hinge module 5C position the first surface 61A of the first plate 61 and the second surface 62A of the second plate 62 to support the third display area (circled number 3) of the flexible display module 24. According to one embodiment, a structure in which the third hinge module 5C between the first hinge module 5A and the second hinge module 5B is coupled to the first plate 61 and the second plate 62 can reduce or prevent the phenomenon of the first plate 61 and the second plate 62 lifting up. In various embodiments, the third hinge module 5C may be replaced by a guide rail assembly 6D (see FIG. 7).

[0119] FIG. 7 is a cross-sectional view (701, 702) showing the foldable housing 20 with the electronic device 2 in an unfolded state according to an embodiment of the present invention. Referring to FIG. 7, the foldable housing 20 includes a first support portion 411, a second support portion 421, a first plate 61, a second plate 62, a guide rail assembly 5D, a first hinge housing cover 711, and / or a second hinge housing cover 712. The first hinge housing cover 711 is a part of the first housing 21 (see FIG. 2), and the second hinge housing cover 712 is a part of the second housing 22 (see FIG. 2).

[0120] According to one embodiment, the guide rail assembly 5D is disposed on or coupled to the hinge housing 23. The hinge housing 23 includes a recess provided on the other side opposite to one side that is exposed to the outside when the electronic device 2 is in the folded state (see Figure 3), and the guide rail assembly 5D is disposed in or coupled to the recess of the hinge housing 23. In one embodiment, the guide rail assembly 5D includes a guide rail 51D, a first slider 52D, and / or a second slider 53D. The first slider 52D and the second slider 53D are slidably disposed on the guide rail 51D. The guide rail 51D is coupled to the hinge housing 23 via screw fastening. The first slider 52D is coupled to the first plate 61 via screw fastening. The second slider 53D is coupled to the second plate 62 via screw fastening.

[0121] The guide rail 51D includes a first guide rail and a second guide rail. The first guide rail may be a space formed along a path corresponding to the rotational movement of the first plate 61 to which the first slider 52D is coupled. The second guide rail may be a space formed along a path corresponding to the rotational movement of the second plate 62 to which the second slider 53D is coupled. The first slider 52D includes a movable first slider that is inserted into the first guide rail of the guide rail 51D and guided by the first guide rail. The second slider 53D includes a movable second slider that is inserted into and guided by the second guide rail of the guide rail structure 51D. The guide rail assembly 5D reduces the phenomenon of the first plate 61 and the second plate 62 lifting up.

[0122] According to an embodiment, the first hinge housing cover 711 is connected to the first support portion 411 . In various embodiments, the first support portion 411 may be provided in a form that further includes a portion corresponding to the first hinge housing cover 711, and in this case, the first hinge housing cover 711 may be omitted. The second hinge housing cover 712 is connected to the second support portion 421 . In various embodiments, the second support portion 421 may be provided in a form that further includes a portion corresponding to the second hinge housing cover 712, in which case the second hinge housing cover 712 may be omitted. When the electronic device 2 is in a folded state (see FIG. 3), one surface of the hinge housing 23 that is exposed to the outside includes a curved surface, and the first hinge housing cover 711 and the second hinge housing cover 712 are provided in a curved shape that includes a curved portion corresponding to the curved surface.

[0123] In various embodiments, the first hinge housing cover 711 may be referred to by various other terms such as 'first curved cover', and the second hinge housing cover 712 may be referred to by various other terms such as 'second curved cover'. When the electronic device 2 is in an unfolded state (see FIG. 2), the first hinge housing cover 711 and the second hinge housing cover 712 can each cover both of the hinge housings 23, and the hinge housings 23 may not be substantially exposed to the outside. When the electronic device 2 is in the folded state, the hinge housing 23 is exposed to the outside between the first hinge housing cover 711 and the second hinge housing cover 712.

[0124] FIG. 8 is an exploded perspective view of a first hinge module 5A according to one embodiment of the present invention, FIG. 9 is an oblique view of a first hinge module 5A according to one embodiment of the present invention, FIG. 10 is a diagram showing a first part 810 of a first hinge module 5A according to one embodiment of the present invention, FIG. 11 is a diagram showing a third part 830 of a first hinge module 5A according to one embodiment of the present invention, FIG. 12 is a diagram showing a second part 820 of a first hinge module 5A according to one embodiment of the present invention, FIG. 13 is a diagram showing a fourth part 840 of a first hinge module 5A according to one embodiment of the present invention, FIG. 14 is a diagram showing a fifth part 1010 of a first bracket 51A according to one embodiment of the present invention, FIG. 15 is a diagram showing a seventh part 1110 of a second bracket 52A according to one embodiment of the present invention, and FIG. 16 is a cross-sectional view 1600 showing a first circular gear 931, a second circular gear 941, a third circular gear 951, and a fourth circular gear 961 according to one embodiment of the present invention.

[0125] Referring to Figures 8, 9, 10, 11, 12, 13, 14, 15, and 16, the first hinge module 5A includes a first portion 810, a second portion 820, a third portion 830, a fourth portion 840, an actuator 900, a first bracket 51A, and / or a second bracket 52A. The bracket connection portion 53A in FIG. 4 is an assembly including a first portion 810, a second portion 820, a third portion 830, a fourth portion 840, and an actuator 900.

[0126] According to one embodiment, the first portion 810 is rotatably coupled to the actuator 900 about a first axis of rotation C1 relative to the actuator 900. The first rotation axis C1 is a central axis (eg, a straight line that is the center of rotation) about which the first portion 810 rotates, and is provided by a portion where the first portion 810 and the actuator 900 are rotatably connected. The second portion 820 is coupled to the actuator 900 so as to be rotatable about a second rotation axis C2 relative to the actuator 900. The second rotation axis C2 is a central axis around which the second portion 820 rotates, and is provided by a portion where the second portion 810 and the actuator 900 are rotatably connected. The first rotation axis C1 and the second rotation axis C2 are substantially parallel to the center line (A) (see FIG. 2) of the electronic device 2 and are positioned apart from each other. The first portion 810 and the second portion 820 are disposed apart from each other in the direction of the center line (A) of the electronic device 2 (see FIG. 2) (for example, the y-axis direction).

[0127] According to one embodiment, the third portion 830 is rotatably coupled to the actuator 900 about a third rotation axis C3 relative to the actuator 900. The third rotation axis C3 is a central axis (eg, a straight line at the center of the gyroscope) about which the rotation of the third portion 830 occurs, and is provided by a portion where the third portion 830 and the actuator 900 are rotatably connected. The fourth portion 840 is connected to the actuator 900 so as to be rotatable about a fourth rotation axis C4 relative to the actuator 900. The fourth rotation axis C4 is a central axis around which the fourth portion 840 rotates and is provided by a portion where the fourth portion 840 and the actuator 900 are rotatably connected. The third rotation axis C3 and the fourth rotation axis C4 are substantially parallel to the center line (A) (see FIG. 2) of the electronic device 2 and are spaced apart from each other. The third portion 830 and the fourth portion 840 are disposed apart from each other in the direction of the center line (A) of the electronic device 2 (see FIG. 2) (for example, the y-axis direction).

[0128] The first portion 810 and the third portion 830 are provided substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). The second portion 820 and the fourth portion 840 are provided substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). The first rotation axis C1 of the first portion 810 and the third rotation axis C3 of the third portion 830 are positioned substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). The second rotation axis C2 of the second portion 820 and the fourth rotation axis C4 of the fourth portion 840 are positioned substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2).

[0129] According to an embodiment, the first bracket 51A is coupled to the first support portion 411 (see FIG. 4) of the first frame 211 via screw fastening. The first hinge module 5A is connected to the first support portion 411 (see FIG. 4) via a first bracket 51A. Because the first bracket 51A is fixed to the first support portion 411 (see FIG. 4), when the state of the electronic device 2 changes (for example, between the unfolded state of FIG. 2 and the folded state of FIG. 3), the first frame 211 (see FIG. 4) moves together with the first bracket 51A. The first portion 810 and the second portion 820 are connected to the first bracket 51A so as to be slidable relative to the first bracket 51A.

[0130] According to an embodiment, the second bracket 52A is coupled to the second support portion 421 (see FIG. 4) of the second frame 221 via screw fastening. The first hinge module 5A is connected to the second support portion 421 (see FIG. 4) via the second bracket 52A. Because the second bracket 52A is fixed to the second support portion 421 (see FIG. 4), when the state of the electronic device 2 changes (for example, when transitioning between the unfolded state of FIG. 2 and the folded state of FIG. 3), the second frame 221 (see FIG. 4) moves together with the second bracket 52A. In one embodiment, the first bracket 51A and the second bracket 52A are provided substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). The third portion 830 and the fourth portion 840 are connected to the second bracket 52A so as to be slidable relative to the second bracket 52A.

[0131] According to one embodiment, the actuator 900 includes a first rotary support (or first rotary support assembly) 901 and a second rotary support (or second rotary support assembly) 902 . According to one embodiment, the first rotating support 901 is coupled to the first portion 810 and the third portion 830 . The first hinge module 5A includes a first rotational motion guide for mutual rotational movement between the first rotational support 901 and the first portion 810. Via the first rotational movement guide, the first portion 810 can rotate softly and smoothly relative to the first rotation support 901 . The first hinge module 5A includes a second rotational movement guide for mutual rotational movement between the first rotational support 901 and the third portion 830. Through the second rotational movement guide, the third portion 830 can rotate softly and smoothly relative to the first rotational support 901 .

[0132] According to one embodiment, the first rotational motion guide for mutual rotational motion between the first rotational support 901 and the first part 810 includes a first rotational motion guide rail included in the first rotational support 901, and a first rotational motion slider 810A included in the first part 810 corresponding to the first rotational motion guide rail. The first rotary movement slider 810A is disposed on the first rotary movement guide rail. The first portion 810 rotates relative to the first rotation support 901 as the first rotational movement slider 810A moves while being guided by the first rotational movement guide rail. The second rotational movement guide for mutual rotational movement between the first rotational support 901 and the third part 830 includes a second rotational movement guide rail included in the first rotational support 901 and a second rotational movement slider 830A included in the third part 830 corresponding to the second rotational movement guide rail. The second rotary movement slider 830A is disposed on the second rotary movement guide rail. The second rotational movement slider 830A moves while being guided by the second rotational movement guide rail, whereby the third portion 810 rotates relative to the first rotation support 901.

[0133] According to one embodiment, the first rotation support 901 includes a rotation support bracket 910 and a bracket cover 920 coupled to the rotation support bracket 910 . At least a portion of the rotation support bracket 910 is located between the hinge housing 23 (see FIG. 4) and the bracket cover 920. The rotation support bracket 910 is coupled to the hinge housing 23 via screw fastening. For screw fastening, the rotation support bracket 910 includes a screw hole 918 provided in a center corresponding to the center line (A) of the electronic device 2 (see FIG. 2), and the hinge housing 23 (see FIG. 4) includes a screw fastening portion aligned to correspond to the screw hole 918. The first rotation support 901, the rotation support bracket 910, or the bracket cover 920 may be provided in a substantially symmetrical form based on the center line (A) of the electronic device 2 (see FIG. 2).

[0134] According to one embodiment, the rotation support bracket 910 and the bracket cover 920 are coupled via a snap-fit ​​fastening. For snap-fit ​​fastening, the rotation support bracket 910 includes a first hook 913 and a second hook 914 positioned on opposite sides of the center line (A) of the electronic device 2 (see FIG. 2), and the bracket cover 920 includes a first hook fastening portion (e.g., a first locking portion 923) corresponding to the first hook 913 and a first hook fastening portion (e.g., a second locking portion) 924 corresponding to the second hook 914.

[0135] According to one embodiment, the rotation support bracket 910 and the bracket cover 920 are coupled via screw fastening. For screw fastening, the bracket cover 920 includes screw holes (925, 926) arranged spaced apart from each other in the direction of the center line (A) (e.g., the y-axis direction) at a center corresponding to the center line (A) of the electronic device 2 (see FIG. 2), and the rotation support bracket 910 includes screw fastening portions (915, 916) aligned in a one-to-one correspondence with the screw holes (925, 926). The screw fastening portions (915, 916) and the screw fastening portions (915, 916) are provided at the center of the first rotating support 901 corresponding to the center line (A) (see FIG. 2) of the electronic device 2 of the first hinge module 5A, and are arranged spaced apart from each other in the direction of the center line (A).

[0136] The rotation support bracket 910 includes a first rail surface 911 and a second rail surface 912 provided on the other surface opposite to one surface facing the hinge housing 23 (see FIG. 4). The first rotational motion slider 810A of the first part 810 is slidably arranged in a first space between the first rail surface 911 and the bracket cover 920, and the first space becomes a first rotational motion guide rail that guides the movement of the first rotational motion slider 810A. The first rotary movement slider 810A and the first rotary movement guide rail are provided in a curved shape extending in the circumferential direction for mutually stable rotary movement between the first part 810 and the first rotary support 901. The second rotational movement slider 830A of the third part 830 is slidably arranged in the second space between the second rail surface 912 and the bracket cover 920, and the second space becomes a second rotational movement guide rail that guides the movement of the second rotational movement slider 830A. The second rotational movement slider 830A and the second rotational movement guide rail are provided in a curved shape extending in the circumferential direction for mutually stable rotational movement between the third part 830 and the first rotation support 901.

[0137] The first and second rotary movement guide rails, and the first and second rotary movement sliders 810A and 830A are provided substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). The first rotation axis C1 of the first portion 810 is substantially provided by a sliding pair including a first rotational movement slider 810A and a first rotational movement guide rail. The first part 810 can rotate relative to the first rotating support 901 based on the first rotation axis C1, and the degree to which the first rotational motion slider 810A of the first part 810 is pulled into (or overlaps with) the first rotating support 901 varies depending on the angle between the first frame 211 (see Figure 4) and the second frame 221 (see Figure 4). The third rotation axis C3 of the third portion 830 is substantially provided by a sliding pair including a second rotational movement slider 830A and a second rotational movement guide rail. The third part 830 can rotate relative to the first rotating support 901 based on the third rotation axis C3, and the degree to which the second rotational motion slider 830A of the third part 830 is pulled into (or overlaps with) the first rotating support 901 varies depending on the angle between the first frame 211 (see Figure 4) and the second frame 221 (see Figure 4).

[0138] According to one embodiment, the combination of the rotational support bracket 910, bracket cover 920, and first rotational movement slider 810A of the first part 810 is provided to prevent the first rotational movement slider 810A from detaching from the first rotational support 901 while allowing the first rotational movement slider 810A to move within a specified path range of the first rotational movement guide rail. The combination of the rotational support bracket 910, the bracket cover 920, and the second rotational movement slider 830A of the third part 830 is provided to prevent the second rotational movement slider 830A from detaching from the first rotational support 901 while allowing it to move within a specified path range of the second rotational movement guide rail.

[0139] According to one embodiment, the first rotary movement slider 810A of the first portion 810 includes an opening 811 provided to accommodate the first hook 913. The first hook 913 is inserted into the opening 811 . The opening 811 extends along the path of movement of the first rotary motion slider 810 A relative to the first rotary support 901 . Upon mutual rotational movement between the first portion 810 and the first rotational support 901, the relative position between the first hook 913 and the opening 811 changes. The opening 811 prevents the first hook 913 and the first rotary movement slider 810A from interfering with each other during the relative rotary movement between the first part 810 and the first rotary support 901. The second rotary slider 830A of the third portion 830 includes an opening 831 provided to correspond to the second hook 914. The second hook 914 is inserted into the opening 831 . The opening 831 extends along the path of movement of the second rotary motion slider 830A relative to the first rotary support 901. Upon mutual rotational movement between the third portion 830 and the first rotational support 901, the relative position between the second hook 914 and the opening 831 changes. The opening 831 prevents the second hook 914 and the second rotary movement slider 830A from interfering with each other during the relative rotary movement between the third portion 830 and the first rotary support 901.

[0140] According to various embodiments, interference between the first hook 913 and the inner surface of one side of the opening 811 limits the distance that the first rotational movement slider 810A of the first part 810 moves in the direction of being pulled out from the first rotational support 901, thereby maintaining the connection between the first part 810 and the first rotational support 901. Due to interference between the second hook 914 and the inner surface of one side of the opening 831, the distance that the second rotational movement slider 830A of the third part 830 is moved in the direction of being pulled out from the first rotational support 901 is limited, and the connection between the third part 830 and the first rotational support 901 is maintained.

[0141] According to various embodiments, the first rotary movement guide for mutual rotational movement between the first rotary support 901 and the first part 810 may be replaced, and the first part 810 may be configured to be rotatable relative to the first rotary support 901 via a shaft or pin. The second rotary movement guide for mutual rotary movement between the first rotary support 901 and the third part 830 may be replaced, and the third part 830 may be configured to be rotatable relative to the first rotary support 901 via a shaft or pin.

[0142] According to one embodiment, the second rotating support 902 is coupled to the second portion 820 and the fourth portion 840 . The second portion 820 includes a first shaft connecting portion (or a first shaft connecting arm or a first shaft arm) 821 and a second shaft connecting portion (or a second shaft connecting arm or a second shaft arm) 822. The first shaft coupling portion 821 and the second shaft coupling portion 822 are disposed apart from each other in the direction of the second rotation axis C2 (for example, the y-axis direction). The first shaft connecting portion 821 and the second shaft connecting portion 822 are connected to the second rotation support 902 and rotate around the second rotation axis C2. The fourth portion 840 includes a third sapt connector (or a third shaft connector arm or a third shaft arm) 841 and a fourth shaft connector (or a fourth shaft connector arm or a fourth shaft arm) 842. The third shaft coupling portion 841 and the fourth shaft coupling portion 842 are disposed apart from each other in the direction of the fourth rotation axis C4 (for example, the y-axis direction). The third shaft connector 841 and the fourth shaft connector 842 are connected to the second rotation support 902 and rotate about a fourth rotation axis C4.

[0143] According to one embodiment, the second rotational support 902 includes a first shaft 930, a second shaft 940, a third shaft 950, a fourth shaft 960, a gear bracket 970, a cam (or cam gear) 980, and / or a plurality of springs 990. According to one embodiment, the first shaft 930 is coupled to the first shaft coupling portion 821 and the second shaft coupling portion 822 of the second portion 820 . The first shaft 930 is disposed through a shaft hole provided in the first shaft connecting portion 821 and a shaft hole provided in the second shaft connecting portion 822 . The second rotation axis C2 of the second portion 820 is the central axis of the first shaft 930. The first shaft coupling portion 821 and the second shaft coupling portion 822 are fixed to the first shaft 930, and the second portion 820 rotates together with the first shaft 930 about the second rotation axis C2.

[0144] According to one embodiment, the second shaft 940 is coupled to the third shaft coupling portion 841 and the fourth shaft coupling portion 842 of the fourth portion 840 . The second shaft 940 is disposed through a shaft hole provided in the third shaft connecting portion 841 and a shaft hole provided in the fourth shaft connecting portion 842 . The fourth rotation axis C4 of the fourth portion 840 is the central axis of the second shaft 940. The third shaft coupling portion 841 and the fourth shaft coupling portion 842 are fixed to the second shaft 940, and the fourth portion 840 rotates together with the second shaft 940 about a fourth rotation axis C4. According to one embodiment, the first shaft 930 and the second shaft 940 are rotatably disposed in a gear bracket 970 . The gear bracket 970 stably supports the rotation of the first shaft 930 and the second shaft 940 . The gear bracket 970 is coupled to the hinge housing 23 (see FIG. 4). The gear bracket 970 includes, for example, a first shaft support portion 971, a second shaft support portion 972, and / or a connecting portion 973.

[0145] The first shaft support portion 971 and the second shaft support portion 972 are arranged spaced apart from each other in the direction of the second rotation axis C2 and the fourth rotation axis C4 (e.g., the y-axis direction), and the connecting portion 973 is a portion of the gear bracket 970 that connects the first shaft support portion 971 and the second shaft support portion 972. The first shaft 930 is disposed through a first shaft hole 971 a provided in the first shaft support portion 971 and a third shaft hole 972 a provided in the second shaft support portion 972 . The second shaft 940 is disposed through a second shaft hole 971 b provided in the first shaft support portion 971 and a fourth shaft hole 972 b provided in the second shaft support portion 972 . The connecting portion 973 is coupled to the hinge housing 23 via screw fastening. For screw fastening, the connecting portion 973 includes screw holes (973a, 973b) arranged spaced apart from each other in the direction of the center line (A) (e.g., the y-axis direction) at a center corresponding to the center line (A) of the electronic device 2 (see FIG. 2), and the hinge housing 23 includes screw fastening portions (e.g., bosses) aligned in one-to-one correspondence with the screw holes (973a, 973b). The gear bracket 970 is provided in a substantially symmetrical form with respect to the center line (A) of the electronic device 2 (see FIG. 2).

[0146] According to one embodiment, the first shaft 930 includes a first circular gear 931 disposed between the first rotary support 901 and a first shaft support portion 971 of the gear bracket 970 . The second shaft 940 includes a second circular gear 941 disposed between the first rotary support 901 and a first shaft support portion 971 of a gear bracket 971 . The first shaft 930 and the second shaft 940 may be of substantially the same configuration. The rotation support bracket 910 of the first rotation support 901 includes a first mounting portion (or a first shaft mounting portion) 917a and a second mounting portion (or a second shaft mounting portion) 917b. The first and second mounting portions 917a and 917b may be provided in a recessed form. One end of the first shaft 930 is disposed (or inserted) in the first seating portion 917a. One end of the second shaft 940 is disposed (or inserted) in the second seating portion 917b. One end of the first shaft 930 located at the first seating portion 917 a between the rotation support bracket 910 and the bracket cover 920 is rotatably supported by the first rotation support member 901 .

[0147] The first mounting portion 917a between the rotation support bracket 910 and the bracket cover 920, the first shaft hole 971a of the gear bracket 970, and the third shaft hole 972a of the gear bracket 970 support the first shaft 930 so that the first shaft 930 can rotate based on the second rotation axis C2. One end of the second shaft 940 disposed in the second seating portion 917 b between the rotation support bracket 910 and the bracket cover 920 is rotatably supported by the first rotation support member 901 . The second mounting portion 917b between the rotation support bracket 910 and the bracket cover 920, the second shaft hole 971b of the gear bracket 970, and the fourth shaft hole 972b of the gear bracket 970 support the second shaft 940 so that the second shaft 940 can rotate based on the fourth rotation axis C4.

[0148] According to one embodiment, one end of the third shaft 950 is rotatably arranged in a third mounting portion (or third shaft mounting portion) 917c provided on the rotation support bracket 910 of the first rotation support 901, and the other end of the third shaft 950 is rotatably arranged in a fifth shaft hole 971c provided on the first shaft support portion 971 of the gear bracket 970. One end of the third shaft 950 located at the third seating portion 917 c between the rotation support bracket 910 and the bracket cover 920 is rotatably supported by the first rotation support member 901 . A third mounting portion 917c between the rotation support bracket 910 and the bracket cover 920 and a fifth shaft hole 971c of the gear bracket 970 support the third shaft 950 so that the third shaft 950 can rotate about a fifth rotation axis. One end of the fourth shaft 960 is rotatably arranged in the fourth mounting portion (or fourth shaft mounting portion) 917d provided on the rotation support bracket 910 of the first rotation support body 901, and the other end of the fourth shaft 960 is rotatably arranged in the sixth shaft hole 971d provided on the first shaft support portion 971 of the gear bracket 970. One end of the fourth shaft 960 located at the fourth seating portion 917 d between the rotation support bracket 910 and the bracket cover 920 is rotatably supported by the first rotation support member 901 . A fourth mounting portion 917d between the rotation support bracket 910 and the bracket cover 920 and a sixth shaft hole 971d of the gear bracket 970 support the fourth shaft 960 so that the fourth shaft 960 can rotate about a sixth rotation axis. The fifth rotation axis of the third shaft 950 and the sixth rotation axis of the fourth shaft 960 may be parallel to the second rotation axis C2 of the first shaft 930 and the fourth rotation axis C4 of the second shaft 940.

[0149] According to one embodiment, the third shaft 950 includes a third circular gear 951 . The third circular gear 951 is disposed between the first rotary support 901 and the first shaft support portion 971 of the gear bracket 970 . The fourth shaft 960 includes a fourth circular gear 961 . The fourth circular gear 961 is disposed between the first rotary support 901 and the first shaft support portion 971 of the gear bracket 970 . The third shaft 950 and the fourth shaft 960 may be provided in substantially the same configuration. The third circular gear 951 meshes with the first circular gear 931 of the first shaft 930 . The fourth circular gear 961 meshes with the second circular gear 941 of the second shaft 940 . The third circular gear 951 and the fourth circular gear 961 mesh with each other.

[0150] The first circular gear 931, the second circular gear 941, the third circular gear 951, and the fourth circular gear 961 may be, for example, spur gears. When the second portion 820 rotates around the rotation axis of the first shaft 930 (for example, the second rotation axis C2), the first circular gear 931 of the first shaft 930 rotates in the same direction as the second portion 820. When the fourth portion 840 rotates around the rotation axis of the second shaft 940 (for example, the fourth rotation axis C4), the second circular gear 941 of the second shaft 940 rotates in the same direction as the fourth portion 840. When the first circular gear 931 rotates in a first direction and the second circular gear 941 rotates in a second direction opposite to the first direction, the third circular gear 951 and the fourth circular gear 961 contribute to the transmission of force (e.g., rotational force) and balance of force between the first circular gear 931 and the second circular gear 941.

[0151] Referring to FIG. 16, the second rotation axis C2 of the first circular gear 931 and the fourth rotation axis C4 of the second circular gear 941 are disposed substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). The first circular gear 931 and the second circular gear 941 may have substantially the same configuration. The first circular gear 931 and the second circular gear 941 have, for example, the same number of teeth. The fifth rotation axis C5 of the third circular gear 951 and the sixth rotation axis C6 of the fourth circular gear 961 are positioned substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). The third circular gear 951 and the fourth circular gear 961 may have substantially the same configuration. The third circular gear 951 and the fourth circular gear 961 have, for example, the same number of teeth. According to one embodiment, the third circular gear 951 and the fourth circular gear 961 may have substantially the same configuration as the first circular gear 931 and the second circular gear 941 . The first circular gear 931, the second circular gear 941, the third circular gear 951, and the fourth circular gear 961 have, for example, the same number of teeth.

[0152] According to various embodiments, the third circular gear 951 and the fourth circular gear 961 may be gears of different sizes than the first circular gear 931 and the second circular gear 941. The third circular gear 951 and the fourth circular gear 961 may be smaller gears than the first circular gear 9311 and the second circular gear 941, for example, and may have fewer teeth than the first circular gear 9311 and the second circular gear 941. As another example, the third circular gear 951 and the fourth circular gear 961 may be larger gears than the first circular gear 931 and the second circular gear 941 and may have a larger number of teeth than the first circular gear 931 and the second circular gear 941. According to one embodiment, a virtual first line 1601 passing through the second rotation axis C2 of the first circular gear 931 and the fourth rotation axis C4 of the second circular gear 941 is located apart from a virtual second line 1602 passing through the fifth rotation axis C5 of the third circular gear 951 and the sixth rotation axis C6 of the fourth circular gear 941 and is substantially parallel to the virtual second line 1602. The second straight line 1602 is located closer to the hinge housing 23 (see FIG. 4) than the first straight line 1601. In various embodiments, the first circular gear 931, the second circular gear 941, the third circular gear 951, and the fourth circular gear 961 may be arranged so that the first straight line 1601 and the second straight line 1602 substantially coincide with each other.

[0153] According to one embodiment, the first circular gear 931, the second circular gear 941, the third circular gear 951, and the fourth circular gear 961 may be covered by the bracket cover 920 of the first rotating support 901 and may be substantially invisible. According to various embodiments, the bracket cover 920 includes an opening in which a portion of the first circular gear 931 is positioned (or inserted) and an opening in which a portion of the second circular gear 941 is positioned (or inserted). The opening of the bracket cover 920 prevents the bracket cover 920 from interfering with the first circular gear 931 and the second circular gear 941 . The opening of the bracket cover 920 contributes to slimming down the first hinge module 5A.

[0154] According to various embodiments, some of the teeth included in the first circular gear 931 that do not mesh with the third circular gear 951 in response to a change in state of the electronic device 2 (e.g., a transition between the unfolded state of FIG. 2 and the folded state of FIG. 3) can be omitted. Some of the teeth included in the second circular gear 941 that do not mesh with the fourth circular gear 961 in response to a change in the state of the electronic device 2 can be omitted.

[0155] According to one embodiment, the cam 980 includes a first cam (or first cam gear) 981 corresponding to the first shaft connection portion 821 of the second part 820 and a second cam (or second cam gear) 982 corresponding to the second shaft connection portion 822 of the second part 820. The first cam 981 and the second cam 982 include a shaft hole through which the first shaft 930 is disposed, and are disposed between the first shaft connecting portion 821 and the second shaft connecting portion 822. The first cam 981 includes a concave-convex first tooth surface facing the first shaft connecting portion 821, and the first shaft connecting portion 821 includes a concave-convex second tooth surface 821a facing the first tooth surface. The second cam 982 includes a concave-convex third tooth surface facing the second shaft connecting portion 822, and the second shaft connecting portion 822 includes a concave-convex fourth tooth surface 822a facing the third tooth surface.

[0156] According to one embodiment, the cam 980 includes a third cam (or third cam gear) 983 corresponding to the third shaft connection portion 841 of the fourth portion 840 and a fourth cam (or fourth cam gear) 94 corresponding to the fourth shaft connection portion 842 of the fourth portion 840. The third cam 983 and the fourth cam 984 include a shaft hole through which the second shaft 940 is disposed, and are disposed between the third shaft connecting portion 841 and the fourth shaft connecting portion 842. The third cam 983 includes a concave-convex fifth tooth surface facing the third shaft connecting portion 841, and the third shaft connecting portion 841 includes a concave-convex sixth tooth surface 841a facing the fifth tooth surface. The fourth cam 984 includes a concave-convex seventh tooth surface facing the fourth shaft coupling portion 842, and the fourth shaft coupling portion 842 includes a concave-convex eighth tooth surface 842A facing the seventh tooth surface.

[0157] According to one embodiment, the cam 980 includes a first cam structure (or first cam portion) including a first cam 981 and a third cam 983, and a second cam structure (or second cam portion) including a second cam 982 and a fourth cam 984. A first shaft 930 and a second shaft 940 are disposed through the first cam structure and the second cam structure. A plurality of springs (eg, compression springs) 990 are disposed between the first cam structure and the second cam structure. Cam 980 includes a connecting structure (or connecting portion) that connects the first cam structure and the second cam structure. The connecting structure connects the first cam structure and the second cam structure while allowing a relative position change between the first cam structure and the second cam structure in the direction of the center line (A) of the electronic device 2. A plurality of springs 990 are supported by a connecting structure between the first cam structure and the second cam structure, and are stably disposed on the first cam structure and the second cam structure.

[0158] By means of a plurality of springs 990, the first cam 981 elastically presses the first shaft connecting portion 821 of the second section 820, and the second cam 982 elastically presses the second shaft connecting portion 822 of the second section 820. By means of a plurality of springs 990, the third cam 983 elastically presses the third shaft connecting portion 841 of the fourth section 840, and the fourth cam 984 elastically presses the fourth shaft connecting portion 842 of the fourth section 840. According to one embodiment, the plurality of springs 990 includes a first spring, a second spring, a third spring, and / or a fourth spring. The first shaft 930 is disposed through the first spring. The second shaft 940 is disposed through the second spring. The third spring and the fourth spring are disposed between the first spring and the second spring.

[0159] According to one embodiment, the actuator 900 functions to provide a force that allows the second portion 820 and the fourth portion 840 to rotate relative to one another. The actuator 900 has a function of allowing the second portion 820 and the fourth portion 840 to rotate in opposite directions to each other by the same angle. The actuator 900 has a function (for example, a free stop function) that allows the second portion 820 and the fourth portion 840 to rotate to at least one designated angle and maintain that rotation.

[0160] The above-mentioned functions of the actuator 900 are provided through interactions between the multiple circular gears (931, 941, 951, 961), interactions between the first tooth flank of the first cam 981 and the second tooth flank 821a of the first shaft connecting portion 821 using the elastic force of the multiple springs 990, interactions between the third tooth flank of the second cam 982 and the fourth tooth flank 822a of the second shaft connecting portion 822 using the elastic force of the multiple springs 990, interactions between the fifth tooth flank of the third cam 983 and the sixth tooth flank 841a of the third shaft connecting portion 841 using the elastic force of the multiple springs 990, and interactions between the seventh tooth flank of the fourth cam 984 and the eighth tooth flank 842a of the fourth shaft connecting portion 842 using the elastic force of the multiple springs 990. The first part 810 and the second part 820 are slidably connected to the first bracket 51A fixed to the first frame 211 (see Figure 4), and the third part 830 and the fourth part 840 are slidably connected to the second bracket 52A fixed to the second frame 221 (see Figure 4), so that the above-mentioned function of the actuator 900 is substantially provided for mutual rotational movement between the first frame 211 and the second frame 221.

[0161] According to one embodiment, when viewed from the direction of the first rotation axis C1 of the first part 810 (e.g., the y-axis direction), the first part 810 and the first bracket 51A are connected to each other so as to be slidable relative to each other in a first linear direction (LD1). When viewed from the direction of the second rotation axis C2 of the second part 820 (e.g., the y-axis direction), the second part 820 and the first bracket 51A are slidably connected to each other in a second linear direction (LD2) different from the first linear direction (LD1). According to one embodiment, when viewed from the direction of the third rotation axis C3 of the third part 830 (e.g., the y-axis direction), the third part 830 and the second bracket 52A are slidably connected to each other in the third linear direction (LD3). When viewed from the direction of the fourth rotation axis C4 of the fourth part 840 (e.g., the y-axis direction), the fourth part 840 and the second bracket 52A are slidably connected to each other in a fourth linear direction (LD4) different from the third linear direction (LD3).

[0162] The first linear direction (LD1) in which the first portion 810 slides relative to the first bracket 51A and the third linear direction (LD3) in which the third portion 830 slides relative to the second bracket 52A are provided substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). The second linear direction (LD2) in which the second part 820 slides relative to the first bracket 51A and the fourth linear direction (LD4) in which the fourth part 840 slides relative to the second bracket 52A are provided substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). When the angle between the first frame 211 (see FIG. 4) and the second frame 221 (see FIG. 4) changes depending on the combination of the first rotation axis C1, the second rotation axis C2, the third rotation axis C3, and the fourth rotation axis C4, the first part 810 and the second part 820 move linearly relative to the first bracket 51A while rotating relative to the actuator 900, and the third part 830 and the fourth part 840 move linearly relative to the second bracket 52A while rotating relative to the actuator 900.

[0163] According to one embodiment, the first linear direction (LD1) in which the first bracket 51A and the first part 810 slide relative to each other is provided so that when the angle between the first frame 211 (see FIG. 4) and the second frame 221 (see FIG. 4) changes and the first part 810 rotates based on the first rotation axis C1, the first bracket 51A and the first part 810 can slide relative to each other smoothly while reducing mutual interference (e.g., frictional resistance). Frictional resistance is the force that opposes movement at the contact surface, for example, when two objects slide against each other. The third linear direction (LD3) in which the second bracket 52A and the third part 830 slide relative to each other is provided so that when the angle between the first frame 211 (see FIG. 4) and the second frame 221 (see FIG. 4) changes and the third part 830 rotates based on the third rotation axis C3, the second bracket 52A and the third part 830 can slide relative to each other smoothly while reducing mutual interference (e.g., frictional resistance).

[0164] According to one embodiment, the second linear direction (LD2) in which the first bracket 51A and the second part 820 slide relative to each other is provided so that when the angle between the first frame 211 (see FIG. 4) and the second frame 221 (see FIG. 4) changes and the second part 820 rotates based on the second rotation axis C2, the first bracket 51A and the second part 820 can slide relative to each other smoothly while reducing mutual interference (e.g., frictional resistance). The fourth linear direction (LD4) in which the second bracket 52A and the fourth part 840 slide relative to each other is provided so that when the angle between the first frame 211 (see FIG. 4) and the second frame 221 (see FIG. 4) changes and the fourth part 840 rotates based on the fourth rotation axis C4, the second bracket 52A and the fourth part 840 can slide relative to each other smoothly while reducing mutual interference (e.g., frictional resistance).

[0165] According to one embodiment, the first hinge module 5A includes a first linear motion guide (e.g., the first linear motion guide (LMG1) in FIG. 6) so that the first portion 810 and the first bracket 51A can slide relative to each other (e.g., move linearly relative to each other) in a first linear direction (LD1). Through the first linear motion guide, the first portion 810 and the first bracket 51A can slide relative to each other softly and smoothly in the first linear direction (LD1). The first hinge module 5A includes a third linear motion guide (e.g., the third linear motion guide (LMG3) in FIG. 6) so that the third portion 830 and the second bracket 52A can slide relative to each other (e.g., move linearly relative to each other) in a third linear direction (LD3). Through the third linear motion guide, the third portion 830 and the second bracket 52A can slide relative to each other softly and smoothly in the third linear direction (LD3).

[0166] According to one embodiment, a first linear motion guide (e.g., first linear motion guide (LMG1) in FIG. 6) for mutual linear motion between first portion 810 and first bracket 51A includes a first linear motion guide rail 1001 included in first bracket 51A, and a first linear motion slider 810B included in first portion 810 corresponding to first linear motion guide rail 1001. The first portion 810 is provided in a unitary form including a first rotational motion slider 810A and a first linear motion slider 810B. The first linear motion slider 810B is disposed on the first linear motion guide rail 1001. As the first linear motion slider 810B moves while being guided by the first linear motion guide rail 1001, the first portion 810 moves in the first linear direction (LD1) relative to the first bracket 51A.

[0167] The third linear motion guide for mutual linear motion between the third part 830 and the second bracket 52A includes a third linear motion guide rail 1101 included in the second bracket 52A, and a third linear motion slider 830B included in the third part 830 corresponding to the third linear motion guide rail 1101. The third portion 830 is provided in a unitary form including a second rotational motion slider 830A and a third linear motion slider 830B. The third linear motion slider 830B is disposed on the third linear motion guide rail 1101. As the third linear motion slider 830B moves while being guided by the third linear motion guide rail 1101, the third portion 830 moves in the third linear direction (LD3) relative to the second bracket 52A.

[0168] According to one embodiment, a first linear motion guide (e.g., first linear motion guide (LMG1) in FIG. 6) including a first linear motion slider 810B and a first linear motion guide rail 1001 provides linear movement of the first portion 810 relative to a first bracket 51A fixed to a first frame 211 (see FIG. 4), but may substantially complicate rotational movement of the first portion 810 relative to the first bracket 51A. The third linear motion guide (e.g., the third linear motion guide (LMG3) in FIG. 6) including the third linear motion slider 830B and the third linear motion guide rail 1101 allows linear movement of the third part 830 relative to the second bracket 52A fixed to the second frame 221 (see FIG. 4), but may substantially complicate rotational movement of the third part 830 relative to the second bracket 52A. The first linear motion guide and the third linear motion guide are provided substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2).

[0169] According to one embodiment, the first linear motion guide rail 1001 of the first bracket 51A includes a first opening 1001A. The first linear motion slider 810B of the first portion 810 is disposed in the first opening 1001A. The degree to which the first linear motion slider 810B is inserted into the first opening 1001A varies depending on the position to which the first portion 810 and the first bracket 51A slide relative to each other in the first linear direction (LD1). The first linear motion slider 810B is provided in a mating manner in the first opening 1001A. The first portion 810 and the first bracket 51A can be stably slid relative to each other in the first linear direction (LD1) by the combination of the first linear motion slider 810B and the first opening 1001A. The combination of the first linear motion slider 810B and the first opening 1001A provides mutual linear motion between the first portion 810 and the first bracket 51A, but may make mutual rotational motion between the first portion 810 and the first bracket 51A substantially difficult.

[0170] According to one embodiment, the first linear motion slider 810B of the first portion 810 includes a plurality of first recessed grooves (R11, R12, R13, R14). The first linear motion guide rail 1001 of the first bracket 51A includes a plurality of first inserts (I11, I12, I13, I14) arranged (or inserted) in one-to-one correspondence with a plurality of first recess dolls (R11, R12, R13, R14). The first recesses (R11, R12, R13, R14) provide a path extending in a first linear direction (LD1) along which the first portion 810 and the first bracket 51A slide relative to each other when viewed from the direction of the first rotation axis C1 of the first portion 810 (e.g., the y-axis direction). The first inserts (I11, I12, I13, I14) are extended in a first linear direction (LD1) in which the first part 810 and the first bracket 51A slide relative to each other when viewed from the direction of the first rotation axis C1 of the first part 810 (e.g., the y-axis direction).

[0171] When the angle between the first frame 211 (see FIG. 4) to which the first bracket 51A is fixed and the second frame 221 (see FIG. 4) to which the second bracket 52A is fixed changes, the first inserts (I11, I12, I13, I14) and the first recesses (R11, R12, R13, R14) are mutually guided in the first linear direction (LD1), and the relative positions between the first inserts (I11, I12, I13, I14) and the first recesses (R11, R12, R13, R14) change. The first linear motion slider 810B and the first linear motion guide rail 1001 of the first bracket 51A can be stably connected to each other so as to slide relative to each other in the first linear direction (LD1) by a combination (e.g., sliding pair) of a plurality of first recesses (R11, R12, R13, R14) and a plurality of first inserts (I11, I12, I13, I14). The combination of the multiple first recesses (R11, R12, R13, R14) and the multiple first inserts (I11, I12, I13, I14) allows for mutual linear movement between the first part 810 and the first bracket 51A, but may make mutual rotational movement between the first part 810 and the first bracket 51A substantially difficult. In one embodiment, the first linear motion guide rail 1001 of the first bracket 51A includes at least one recess, and the first linear motion slider 810B of the first portion 810 includes at least one insert positioned (or inserted) corresponding to the at least one recess.

[0172] According to one embodiment, the third linear motion guide (e.g., the third linear motion guide (LMG3) in FIG. 6) including the third linear motion slider 830B of the third portion 830 and the third linear motion guide rail 1101 of the second bracket 52A is provided substantially symmetrically to the first linear motion guide (e.g., the first linear motion guide LMG1 in FIG. 6) including the first linear motion slider 810B of the first portion 810 and the first linear motion guide rail 1001 of the first bracket 51A, with respect to the center line (A) of the electronic device 2 (see FIG. 2). The third linear motion guide includes, for example, a third linear motion slider 830B included in the third portion 830 and a third linear motion guide rail 1101 included in the second bracket 52A. The third linear motion guide rail 1101 includes a second opening 1101A, and the third linear motion slider 830B is disposed in the second opening 1101A. The third linear motion slider 830B includes a plurality of second recesses (R31, R32, R33, R34). The third linear motion guide rail 1101 includes a plurality of second inserts (I31, I32, I33, I34) arranged (or inserted) in one-to-one correspondence with the plurality of second recesses (R31, R32, R33, R34).

[0173] According to one embodiment, a second linear motion guide (e.g., second linear motion guide (LMG2) in FIG. 6) that enables the second part 820 and the first bracket 51A to move linearly relative to each other in the second linear direction (LD2) includes a pair of second linear motion sliders (820A, 820B) included in the second part 820 and a second linear motion guide rail 1002 included in the first bracket 51A. The second portion 820 is provided in an integrated form including a first shaft connecting portion 821, a second shaft connecting portion 822, and a pair of second linear motion sliders (820A, 820B). The pair of second linear motion sliders (820A, 820B) and the second linear motion guide rail 1002 are connected to each other so as to be slidable relative to each other in the second linear direction (LD2). The second linear motion guide, including a pair of second linear motion sliders (820A, 820B) and a second linear motion guide rail 1002, allows linear movement of the second part 820 relative to the first bracket 51A fixed to the first frame 211 (see Figure 4), but may make rotational movement of the second part 820 relative to the first bracket 51A substantially difficult.

[0174] According to one embodiment, the first bracket 51A includes a fifth portion 1010 including the first linear motion guide rail 1001 and a sixth portion 1020 coupled to the fifth portion 1010. The fifth section 1010 includes a support portion 1011 that extends from the first linear motion guide rail 1001 in correspondence with the second section 820 . The second linear motion guide rail 1002 of the first bracket 51A is provided by a combination of the support portion 1011 of the fifth portion 1010 and the sixth portion 1020. The support portion 1011 of the fifth portion 1010 is coupled to the sixth portion 1020 via screw fastening. According to an embodiment, the support portion 1011 of the fifth portion 1010 is coupled to the first support portion 411 (see FIG. 4) of the first frame 211 via screw fastening. For screw fastening, the support portion 1011 of the fifth part 1010 includes screw holes (1012, 1013), and the first support portion 411 of the first frame 211 (see FIG. 4) includes screw fastening portions (e.g., bosses) aligned in one-to-one correspondence with the screw holes (1012, 1013).

[0175] According to one embodiment, the sixth portion 1020 is at least partially located between the support portion 1011 of the fifth portion 1010 and the first support portion 411 of the first frame 211 (see FIG. 4). The sixth portion 1020 is coupled to the support portion 1011 of the fifth portion 1010 via screw fastening. For screw fastening, the support portion 1011 of the fifth portion 1010 includes a screw hole 1014 , and the sixth portion 1020 includes a screw fastening portion 1024 aligned with the screw hole 1014 . The support portion 1011 of the fifth portion 1010 and the sixth portion 1020 are coupled to the first support portion 411 (see FIG. 4) of the first frame 211 by screw fastening. For screw fastening, the support portion 411 of the fifth part 1010 (see FIG. 4) includes screw holes (1015, 1016), and the sixth part 1020 includes screw holes (1025, 1026) aligned in a one-to-one correspondence with the screw holes (1015, 1016). The first support portion 411 (see FIG. 4) of the first frame 211 includes screw fastening portions aligned in one-to-one correspondence with the screw holes (1025, 1026) of the sixth portion 1020.

[0176] According to one embodiment, the pair of second linear motion sliders (820A, 820B) of the second portion 820 are inserted between the support portion 1011 of the fifth portion 1010 and the sixth portion 1020. By combining the support portion 1011 of the fifth portion 1010 and the sixth portion 1020, the space provided between the support portion 1011 of the fifth portion 1010 and the sixth portion 1020 is configured to guide the movement of the pair of second linear motion sliders (820A, 820B) relative to the first bracket 51A. The degree to which the pair of second linear motion sliders (820A, 820B) are inserted into the space between the support portion 1011 of the fifth portion 1010 and the sixth portion 1020 varies depending on the position at which the second portion 820 and the first bracket 51A are slid relative to each other in the second linear direction (LD2). The second part 820 and the first bracket 51A are configured to be able to slide stably relative to each other in the second linear direction (LD2) by a combination of a pair of second linear motion sliders (820A, 820B), the support part 1011 of the fifth part 1010, and the sixth part 1020. The combination of the pair of second linear motion sliders (820A, 820B), the support portion 1011 of the fifth portion 1010, and the sixth portion 1020 allows for mutual linear motion between the second portion 820 and the first bracket 51A, but may make mutual rotational motion between the second portion 820 and the first bracket 51A substantially difficult.

[0177] According to one embodiment, the space between the support portion 1011 of the fifth portion 1010 and the sixth portion 1020, when viewed from the direction of the second rotation axis C2 of the second portion 820, provides a path extending in a second linear direction (LD2) along which the second portion 820 and the first bracket 51A can slide relative to each other. The pair of second linear motion sliders (820A, 820B) are extended in a second linear direction (LD2) when viewed from the direction of the second rotation axis C2 of the second part 820, so that the second part 820 and the first bracket 51A can slide relative to each other. In one embodiment, the sixth portion 1020 includes a first side 1020a, a second side 1020b, and / or a bottom 1020c. The first side 1020a and the second side 1020b are spaced apart in the direction of the second rotation axis C2, and the bottom 1020c is a portion of the sixth portion 1020 that connects the first side 1020a and the second side 1020b.

[0178] The bottom 1020c may be plate-shaped and faces the support portion 1011 of the fifth portion 1010. The bottom 1020c includes a screw fastening portion 1024 and screw holes (1025, 1026). The first side 1020a and the second side 1020b support the support portion 1011 of the fifth portion 1010 and the bottom 1020c to provide a spaced apart space between the bottom 1020c and the support portion 1011 of the fifth portion 1010. In one embodiment, the screw fastening portion 1023 corresponds to the screw hole 1014 included in the support portion 1011 of the fifth portion 1010 and is provided in a protruding form to support the support portion 1011 of the fifth portion 1010, and together with the first side 1020a and the second side 1020b, contributes to stably positioning the sixth portion 1020 on the fifth portion 1010.

[0179] According to one embodiment, the support portion 1011 of the fifth portion 1010 includes a first protrusion P1 and a second protrusion P2 that protrude toward the bottom 1020c of the sixth portion 1020. The bottom 1020c of the sixth portion 1020 includes a first hole H1 provided corresponding to the first protrusion P1 and a second hole H2 provided corresponding to the second protrusion P1. The end of the first protrusion P1 fits into the first hole H1, and the end of the second protrusion P2 fits into the second hole H2. The second linear motion slider 820A included in the second portion 820 includes a first slit SL1 through which the first protrusion P1 is disposed. The remaining second linear motion slider 820B included in the second portion 820 includes a second slit SL2 through which the second protrusion P2 is disposed.

[0180] The first slit SL1 and the second slit SL2 extend in a second linear direction (LD2) in which the second portion 820 and the first bracket 51A slide relative to each other. The relative position of the first protrusion P1 with respect to the first slit SL1 and the relative position of the second protrusion P2 with respect to the second slit SL2 change depending on the position to which the second part 820 and the first bracket 51A slide relative to each other in the second linear direction (LD2). According to one embodiment, interference between the first protrusion P1 and one side inner surface of the first slit SL1, and interference between the second protrusion P2 and one side inner surface of the second slit SL2, limits the distance that the pair of second linear motion sliders (820A, 820B) of the second part 820 move in the direction of being pulled out from the first bracket 51A, thereby maintaining the connection between the second part 820 and the first bracket 51A.

[0181] According to one embodiment, a fourth linear motion guide (e.g., the fourth linear motion guide (LMG4) in FIG. 6) that enables the fourth portion 840 and the second bracket 52A to move linearly relative to each other in a fourth linear direction (LD4) is provided substantially symmetrically to a second linear motion guide (e.g., the second linear motion guide (LMG2) in FIG. 6) that enables the second portion 820 and the first bracket 51A to move linearly relative to each other in a second linear direction (LD2) with respect to the center line (A) of the electronic device 2 (see FIG. 2). The fourth linear motion guide includes, for example, a pair of fourth linear motion sliders (840A, 840B) included in the fourth portion 840, and a fourth linear motion guide rail 1102 included in the second bracket 52A. The second bracket 52A includes a seventh portion 1110 including the second linear motion guide rail 1101, and an eighth portion 1120 coupled to the seventh portion 1110. The seventh portion 1110 includes a support portion 1111 extending from the third linear motion guide rail 1101 in correspondence with the fourth portion 840 .

[0182] The fourth linear motion guide rail 1102 of the second bracket 52A is provided by a combination of the support portion 1111 of the seventh portion 1110 and the eighth portion 1120. The seventh portion 1110 includes a plurality of screw holes (1112, 1113, 1114, 1115, 1116). The eighth portion 1120 includes a screw fastening portion 1124 and screw holes (1125, 1126). Each of the pair of fourth linear motion sliders (840A, 840B) of the fourth portion 840 includes a third slit SL3 and a fourth slit SL4, and the support portion 1111 of the seventh portion 1110 includes a third protrusion P3 corresponding to the third slit SL3 and a fourth protrusion P4 corresponding to the fourth slit SL4. The eighth portion 11120 includes a third hole H3 corresponding to the third protrusion P3 and a fourth hole H4 corresponding to the fourth protrusion P4.

[0183] According to one embodiment, the first plate 61 (see FIG. 4) is coupled to the first linear motion slider 810B of the first part 810 via screw fastening. The first linear motion slider 810B includes a first screw fastening portion B11 aligned to correspond to the first screw hole SH11 of the first plate 61 (see FIG. 4). The second plate 62 (see FIG. 4) is coupled to the third linear motion slider 830B of the third portion 830 via screw fastening. The third linear motion slider 830B includes a second screw fastening portion B12 aligned to correspond to the second screw hole SH12 of the second plate 62 (see FIG. 4).

[0184] According to various embodiments, the first portion 810 may be referred to as a 'first rotator' and the third portion 830 may be referred to as a 'second rotator'. The second portion 820 may be referred to as a 'first hinge arm' or 'first arm', and the fourth portion 840 may be referred to as a 'second hinge arm' or 'second arm'.

[0185] According to various embodiments, a lubricant (e.g., grease) may be disposed (e.g., applied) between any two components included in the first hinge module 5A to reduce friction, loss of motion transmission, or loss of force transmission between the components. In various embodiments, to reduce frictional forces, loss of motion transmission, or loss of force transmission between components, the surfaces of the components may be provided with a lubricating coating (e.g., a coating using various lubricating substances such as Teflon). According to various embodiments, the components included in the first hinge module 5A may be formed from a material (e.g., metal or engineering plastic) that has rigidity or strength that is not substantially deformed in response to forces acting on the relative rotational movement between the first housing 21 and the second housing 22.

[0186] 17 is a perspective view 1701 of a hinge unit 1700 and a diagram 1702 showing the hinge unit 1700 in an unfolded state (see FIG. 2) of the electronic device 2 according to one embodiment of the present invention; FIG. 18 is a diagram 1801 showing a first hinge module 5A in an unfolded state (see FIG. 2) of the electronic device 2 according to one embodiment of the present invention; a cross-sectional view 1802 of the first hinge module 5A taken along line D-D'; and a cross-sectional view 1803 of the first hinge module 5A taken along line E-E'; FIG. 19 is a perspective view 1901 of the hinge unit 1700 and a diagram 1902 showing the hinge unit 1700 in a closed state (see FIG. 3) of the electronic device 2 according to one embodiment of the present invention; and FIG. 20 is a diagram 1801 showing a first hinge module 5A in an unfolded state (see FIG. 2) of the electronic device 2 according to one embodiment of the present invention; 20 shows a diagram 2001 showing the first hinge module 5A in an unfolded state (see FIG. 3), a cross-sectional view 2002 of the first hinge module 5A taken along line F-F', and a cross-sectional view 2003 of the first hinge module 5A taken along line E-E'; FIG. 21 shows a diagram 2101 showing the first hinge module 5A in an intermediate state of an electronic device 2 according to one embodiment of the present invention, a cross-sectional view 2102 of the first hinge module 5A taken along line H-H', and a cross-sectional view 2103 of the first hinge module 5A taken along line I-I'; FIG. 22 shows a diagram 2201 showing the electronic device 2 in an unfolded state according to one embodiment of the present invention, a diagram 2202 showing the electronic device 2 in an intermediate state, and a diagram 2203 showing the electronic device 2 in a folded state.

[0187] 17, 18, 19, 20, 21, and 22, when the electronic device 2 is transformed between the unfolded state and the folded state, there is a rotational movement of the first part 810 about the first rotation axis C1, a linear movement between the first part 810 and the first bracket 51A, a rotational movement of the second part 820 about the second rotation axis C2, and a linear movement between the second part 820 and the first bracket 51A. When the electronic device 2 is transformed between the unfolded state and the folded state, there is a rotational movement of the third part 830 about the third rotation axis C3, a linear movement between the third part 830 and the second bracket 52A, a rotational movement of the fourth part 840 about the fourth rotation axis C4, and a linear movement between the fourth part 840 and the second bracket 52A.

[0188] According to one embodiment, when the electronic device 2 is switched from the unfolded state to the folded state, the first rotation axis C1 and the second rotation axis C2 are positioned farther away from the first frame 211 (see FIG. 4) to which the first bracket 51A is fixed compared to when the electronic device 2 is in the unfolded state. When the electronic device 2 is switched from the unfolded state to the folded state, the first portion 810 to which the first plate 61 is fixed is positioned retracted relative to the first bracket 51A in the direction opposite to the direction toward the third display area (circled number 3) of the flexible display module 24. When the electronic device 2 is switched from the unfolded state to the folded state, the third rotation axis C3 and the fourth rotation axis C4 are positioned farther away from the second frame 221 (see Figure 4) to which the second bracket 52A is fixed compared to when the electronic device 2 is unfolded. When the electronic device 2 is switched from the unfolded state to the folded state, the third portion 830 to which the second plate 62 is fixed is positioned retracted relative to the second bracket 52A in the direction opposite to the direction toward the third display area (circled number 3) of the flexible display module 24. When the electronic device 2 is switched from the unfolded state to the folded state, the first surface 61A of the first plate 61 and the second surface 62A of the second plate 62 are positioned facing each other and spaced apart from each other.

[0189] When the electronic device 2 is switched from the unfolded state to the folded state, the retraction of the first part 810 relative to the first bracket 51A and the retraction of the third part 830 relative to the second bracket 52A provides a space width in the first direction 2311 (e.g., the first direction 611 in FIG. 6 ) between the first surface 61A of the first plate 61 and the second surface 62A of the second plate 62 such that the third display area (circled number 3) can be arranged in a bent shape that can reduce bending stress and / or buckling phenomenon. When the electronic device 2 is switched from the unfolded state to the folded state, the first rotation axis C1 and the second rotation axis C2 move away from the first frame 211 in which the first display area (circled number 1) is arranged, and the third rotation axis C3 and the fourth rotation axis C4 move away from the second frame 221 in which the second display area (circled number 2) is arranged, which means that the bracket connection portion 53A is positioned away from the structure in which the first frame 211 and the second frame 221 face each other in a second direction 2312 (e.g., second direction 612 in Figure 6) perpendicular to the first direction 2311. When the electronic device 2 is switched from the unfolded state to the folded state, the actuator 900 is positioned away from the structure in which the first frame 211 and the second frame 221 face each other in the second direction 2312, so that the spatial width in the second direction 2312 is such that the third display area (circled number 3) is arranged in a bent shape that can reduce bending stress and / or buckling phenomenon.

[0190] According to one embodiment, when the electronic device 2 is switched from the unfolded state to the folded state, the actuator 900 is positioned away in the second direction 2312 due to the structure in which the first frame 211 and the second frame 221 face each other. As a result, the hinge housing 23 coupled to the actuator 900 reduces the gap between the first housing 21 and the second housing 22, and is exposed to the outside through the open gap between the first housing 21 and the second housing 22, as shown in FIG. 3. According to one embodiment, when the electronic device 2 is switched from a folded state to an unfolded state, the relative position change between the first frame 211 and the second frame 221, and the correspondingly operating first hinge module 5A, positions the first surface 61A of the first plate 61 and the second surface 62A of the second plate 62 to support the third display area (circled number 3) of the flexible display module 24.

[0191] FIG. 23 is a diagram 2301 showing a first hinge module 245A in an unfolded state of an electronic device 2 according to various embodiments of the present invention (see FIG. 2), and a cross-sectional view 2302 of the first hinge module 245A taken along line J-J'; FIG. 24 is a diagram 2401 showing a hinge section 2500 in an unfolded state of an electronic device 2 according to various embodiments of the present invention, and a cross-sectional view 2402 of the hinge section 2500 taken along line K-K'; FIG. 25 is a diagram 2501 showing a first hinge module 245A in a folded state of an electronic device 2 according to various embodiments of the present invention (see FIG. 2), and a cross-sectional view 2502 of the first hinge module 245A taken along line L-L'; and FIG. 26 is a diagram 2601 showing an unfolded state of an electronic device 2 according to various embodiments of the present invention, and a diagram 2602 showing a folded state of the electronic device 2.

[0192] 23, 24, 25, and 26, the first hinge module 245A includes a first portion 24810, a second portion 820, a third portion 24830, a fourth portion 840, an actuator 900, a first bracket 2451A, a second bracket 2452A, a first link 2410, and / or a second link 2420. The first hinge module 5A according to the embodiment of FIG. 4 may be replaced with the first hinge module 245A according to the embodiment of FIG. The second hinge module 5B or the third hinge module 5C according to the embodiment of FIG. 4 may be provided substantially the same as the first hinge module 245A according to the embodiment of FIG.

[0193] Compared with the first hinge module 5A according to the embodiment of FIG. 8, the first hinge module 245A further includes a first connecting portion 2410 and a second connecting portion 2420. The first portion 24810 and the first bracket 2451A of the first hinge module 245A correspond to the first connecting portion 2410 and may be modified from the first portion 810 and the first bracket 51A according to the embodiment of FIG. The third portion 24830 and the second bracket 2452A of the first hinge module 245A correspond to the second connecting portion 2420 and may be a modified version of the third portion 830 and the second bracket 52A according to the embodiment of FIG. The first portion 24810 and the third portion 2843 are provided substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2). The first bracket 2451A and the second bracket 2452A are provided substantially symmetrically with respect to the center line (A) of the electronic device 2 (see FIG. 2).

[0194] According to one embodiment, the first portion 24810 is rotatably coupled to the actuator 900 about a first axis of rotation C1. The third portion 24830 is coupled to the actuator 900 so as to be rotatable about a third rotation axis C3. The second portion 820 is connected to the actuator 900 so as to be rotatable about a second rotation axis C2. The fourth portion 840 is connected to the actuator 900 so as to be rotatable about a fourth rotation axis C4. The first bracket 2451A is coupled to the first support portion 411 (see FIG. 4) of the first frame 211 via screw fastening. The second bracket 2451B is coupled to the second support portion 421 (see FIG. 4) of the second frame 221 via screw fastening.

[0195] The first portion 24810 is slidably connected to the first bracket 2451A and is linearly movable in a first linear direction relative to the first bracket 2451A. The second portion 820 is slidably connected to the first bracket 2451A so as to be linearly movable in a second linear direction relative to the first bracket 2451A. The third portion 24830 is coupled to the second bracket 2452A so as to be linearly movable in a third linear direction relative to the second bracket 2452A. The fourth portion 840 is slidably connected to the second bracket 2452A so as to be linearly movable in a fourth linear direction relative to the second bracket 2452A.

[0196] According to one embodiment, the first connector 2410 connects the first bracket 2451A and the first portion 24810. The first connecting portion 2410 includes a pinhole, and the first pin 2411 is disposed through the pinhole. One end of the first pin 2411 is disposed on a first pin support portion provided on the first bracket 2451A, and the other end of the first pin 2411 is disposed on a second pin support portion provided on the first bracket 2451A. The first connecting portion 2410 rotates relative to the first bracket 2451A with the first pin 2411 as the reference. The rotation axis of the first pin 2411 that connects the first connecting portion 2410 and the first bracket 2451A is substantially parallel to the first rotation axis C1. The first connecting portion 2410 includes a second pin 2412 that is parallel to the first pin 2411 and spaced apart from the first pin 2411 . The first portion 810 includes a recessed first pin rail PR12 corresponding to the second pin 2412. The second pin 2412 is inserted into the first pin rail PR12.

[0197] When the electronic device 2 is transformed between the unfolded state (see FIG. 2) and the folded state (see FIG. 3), the first portion 24810 moves in a first linear direction relative to the first bracket 2451A, and the first connecting portion 24810 rotates relative to the first pin 2411 due to the interaction between the second pin 2412 and the first pin rail PR12. When the electronic device 2 is transformed between the unfolded state and the folded state, the position of the second pin 2412 relative to the first pin rail PR12 changes corresponding to the linear movement of the first portion 24810 relative to the first bracket 2451A.

[0198] According to one embodiment, the second connector 2420 connects the second bracket 2452A and the second portion 24820. The second connecting portion 2420 is provided substantially symmetrically to the first connecting portion 2410 with respect to the center line (A) of the electronic device 2 (see FIG. 2). The second connecting portion 2420 includes a pinhole, and the third pin 2421 is disposed through the pinhole. One end of the third pin 2421 is placed on a third pin support portion provided on the second bracket 2452A, and the other end of the third pin 2421 is placed on a fourth pin support portion provided on the second bracket 2452A. The second connecting portion 2420 rotates relative to the second bracket 2452A with the third pin 2421 as the reference. The rotation axis of the third pin 2421 that connects the second connecting portion 2420 and the second bracket 2452A is substantially parallel to the third rotation axis C3. The second connecting portion 2420 includes a fourth pin 2422 that is parallel to the third pin 2421 and spaced apart from the third pin 2421 . The second portion 820 includes a recessed second pin rail PR22 corresponding to the fourth pin 2422. The fourth pin 2422 is inserted into the second pin rail PR22.

[0199] When the electronic device 2 is transformed between the unfolded state (see FIG. 2) and the folded state (see FIG. 3), the third portion 24830 moves in a third linear direction relative to the second bracket 2452A, and the second connecting portion 24820 rotates relative to the third pin 2421 due to the interaction between the fourth pin 2422 and the second pin rail PR22. When the electronic device 2 is transformed between the unfolded state and the folded state, the position of the fourth pin 2422 relative to the second pin rail PR22 changes corresponding to the linear movement of the third portion 24830 relative to the second bracket 2452A.

[0200] According to one embodiment, the first plate 2561 is coupled to the first connector 2410 via screw fastening. For screw fastening, the first plate 2561 includes screw holes 2561a, and the first connecting portion 2410 includes screw fastening portions 2415 aligned to correspond to the screw holes 2561a. According to one embodiment, the second plate 2562 is coupled to the second coupling portion 2420 via a screw fastening. For screw fastening, the second plate 2562 includes screw holes 2562a, and the second connecting portion 2420 includes screw fastening portions 2425 aligned to correspond to the screw holes 2562a.

[0201] According to one embodiment, when the electronic device 2 is transformed between the unfolded state (see FIG. 2) and the folded state (see FIG. 3), there is a rotational movement of the first part 24810 based on the first rotation axis C1, a linear movement between the first part 24810 and the first bracket 2451A, a rotational movement of the second part 820 based on the second rotation axis C2, a linear movement between the second part 820 and the first bracket 2451A, and a movement of the first connecting part 2410 connecting the first part 24810 and the first bracket 2451A. When the electronic device 2 is transformed between the unfolded state and the folded state, there is a rotational movement of the third part 24830 based on the third rotation axis C3, a linear movement between the third part 24830 and the second bracket 2452A, a rotational movement of the fourth part 840 based on the fourth rotation axis C4, a linear movement between the fourth part 840 and the second bracket 2452A, and a movement of the second connecting part 2420 connecting the third part 24830 and the second bracket 2452A.

[0202] According to one embodiment, when the electronic device 2 is switched from the unfolded state to the folded state, the first rotation axis C1 and the second rotation axis C2 are positioned farther away from the first frame 211 (see FIG. 4) to which the first bracket 2451A is fixed compared to when the electronic device 2 is in the unfolded state. When the electronic device 2 is switched from the unfolded state to the folded state, the first portion 24810 to which the first plate 2561 is fixed is positioned retracted relative to the first bracket 2451A in the direction opposite to the direction toward the third display area (circled number 3) of the flexible display module 24. When the electronic device 2 is switched from the unfolded state to the folded state, the third rotation axis C3 and the fourth rotation axis C4 are positioned farther away from the second frame 221 (see FIG. 4) to which the second bracket 2452A is fixed compared to when the electronic device 2 is in the unfolded state. When the electronic device 2 is switched from the unfolded state to the folded state, the third portion 24830 to which the second plate 2562 is fixed is positioned backward relative to the second bracket 2452A in the direction opposite to the direction toward the third display area (circled number 3) of the flexible display module 24. When the electronic device 2 is switched from the unfolded state to the folded state, the first plate 2561 and the second plate 62 are positioned facing each other and spaced apart.

[0203] When the electronic device 2 is switched from the unfolded state to the folded state, the first part 24810 retracts relative to the first bracket 2451A, and the first connecting part 2410 connecting the first part 24810 and the first bracket 2451A moves, causing the first plate 2561 coupled to the first connecting part 2410 to be tilted relative to the first bracket 2451A so as not to interfere with the third display area (circled number 3) of the flexible display module 24, compared to the unfolded state of the electronic device 2. When the electronic device 2 is switched from the unfolded state to the folded state, the third part 24830 retracts relative to the second bracket 2452A, and the second connecting part 2420 connecting the third part 24830 and the second bracket 2452A moves, causing the second plate 2562 coupled to the second connecting part 2420 to be tilted relative to the second bracket 2452A so as not to interfere with the third display area (circled number 3) of the flexible display module 24, compared to the unfolded state of the electronic device 2. When the electronic device 2 is switched from the unfolded state to the folded state, a space width in the first direction 2711 between the first plate 2561 and the second plate 2562 is provided so that the third display area (circled number 3) can be arranged in a bent shape that can reduce bending stress and / or buckling phenomenon.

[0204] When the electronic device 2 is in the folded state, the space between the first plate 2561 and the second plate 2562 is provided in a form that expands toward the actuator 900. When the electronic device 2 is switched from the unfolded state to the folded state, the first rotation axis C1 and the second rotation axis C2 move away from the first frame 211 in which the first display area (circled number 1) is arranged, and the third rotation axis C3 and the fourth rotation axis C4 move away from the second frame 221 in which the second display area (circled number 2) is arranged, which means that the actuator 900 is positioned away in a second direction 2712 perpendicular to the first direction 2711 from the structure in which the first frame 211 and the second frame 221 face each other. When the electronic device 2 is switched from the unfolded state to the folded state, the actuator 900 is positioned away from the structure in which the first frame 211 and the second frame 221 face each other in the second direction 2712, thereby providing a space width in the second direction 2712 so that the third display area (circled number 3) is arranged in a bent shape that can reduce bending stress and / or buckling phenomenon.

[0205] According to one embodiment, when the electronic device 2 is switched from the unfolded state to the folded state, the actuator 900 is positioned away in the second direction 2712 from the structure in which the first frame 211 and the second frame 221 face each other, so that the hinge housing 23 connected to the actuator 900 reduces the gap between the first housing 21 and the second housing 22, and is exposed to the outside through the open gap between the first housing 21 and the second housing 22, as shown in FIG. 3. According to one embodiment, when the electronic device 2 is switched from a folded state to an unfolded state, the relative position change between the first frame 211 and the second frame 221, and the correspondingly operating first hinge module 245A, positions the first plate 2561 and the second plate 2562 to support the third display area (circled number 3) of the flexible display module 24.

[0206] According to an exemplary embodiment of the present invention, an electronic device (e.g., electronic device 2 of FIG. 2) includes a first housing (e.g., first housing 21 of FIG. 2) and a second housing (e.g., second housing 22 of FIG. 2). The electronic device includes a hinge module (eg, first hinge module 5A in FIG. 8) that connects the first housing and the second housing. The hinge module includes a first portion (for example, the first portion 810 in FIG. 8) configured to be rotatable about a first rotation axis (for example, the first rotation axis C1 in FIG. 9). The hinge module includes a second portion (for example, the second portion 820 in FIG. 8) configured to be rotatable about a second rotation axis (for example, the second rotation axis C2 in FIG. 9). The second rotation axis is parallel to the first rotation axis and is spaced apart from the first rotation axis.

[0207] The hinge module includes a first bracket (eg, first bracket 51A in FIG. 8) coupled to a first portion and a second portion. The first bracket is fixed to the first housing. The first portion and the first bracket are continuous and slidable relative to each other in a first linear direction. The second portion and the first bracket are continuous and slidable relative to each other in a second linear direction different from the first linear direction. When the angle between the first housing and the second housing changes, the first portion and the first bracket slide relative to one another, and the second portion and the first bracket slide relative to one another.

[0208] According to an exemplary embodiment of the present invention, the electronic device further includes a flexible display module 24 . The flexible display module includes a third display area disposed corresponding to the hinge module, a first display area extending from the third display area and disposed in the first housing, and a second display area extending from the third display area and disposed in the second housing. According to an exemplary embodiment of the present invention, the electronic device further includes a first plate coupled to the first portion corresponding to one side area of ​​the third display area with respect to a center line of the electronic device.

[0209] According to an exemplary embodiment of the present invention, the hinge module further includes a first connecting portion connecting the first bracket and the first portion. The electronic device further includes a first plate that corresponds to one side area of ​​the third display area based on a center line of the electronic device and is coupled to the first connecting part. The first connecting portion is rotatably connected to the first bracket via a first pin that is parallel to the first rotation axis. The first connector includes a second pin that is parallel to the first pin. The second pin is disposed on a first pin rail provided on the first portion.

[0210] According to an exemplary embodiment of the present invention, the first linear direction and the second linear direction are perpendicular to the first axis of rotation and form an acute angle with each other. According to an exemplary embodiment of the present invention, the first portion includes a rotational movement slider disposed on a rotational movement guide rail included in the hinge module. The second rotation axis is provided by a combination of a rotary motion guide rail and a rotary motion slider. According to an exemplary embodiment of the present invention, the second portion is coupled to a shaft included in the hinge module, and the second axis of rotation is provided by the shaft. According to an exemplary embodiment of the present invention, the hinge module includes a resiliently supported cam gear, and the second portion is coupled to the corresponding cam gear with the first rotation axis.

[0211] According to an exemplary embodiment of the present invention, the hinge module further includes a third portion configured to be rotatable about a third axis of rotation. The hinge module further includes a fourth portion configured to be rotatable about a fourth rotation axis. The hinge module further includes a second bracket fixed to the second housing. The second bracket is connected to the third and fourth portions. The third rotation axis is positioned symmetrically to the first rotation axis with respect to the center line of the electronic device. The third portion is provided symmetrically to the first portion with respect to a centerline of the electronic device. The fourth rotation axis is positioned symmetrically to the second rotation axis with respect to the center line of the electronic device. The fourth portion is provided symmetrically to the second portion with respect to the centerline of the electronic device. The third portion and the second bracket are connected to each other so as to be slidable relative to each other in a third linear direction symmetrical to the first linear direction with respect to the center line of the electronic device. The fourth portion and the second bracket are connected to each other so as to be slidable relative to each other in a fourth linear direction symmetrical to the second linear direction with respect to the center line of the electronic device. When the angle between the first housing and the second housing changes, the third portion and the second bracket slide relative to one another, and the fourth portion and the second bracket slide relative to one another.

[0212] According to an exemplary embodiment of the present invention, the electronic device further includes a flexible display module. The flexible display module includes a third display area disposed corresponding to the hinge module, a first display area extending from the third display area and disposed in the first housing, and a second display area extending from the third display area and disposed in the second housing. The electronic device further includes a first plate coupled to the first portion in a position corresponding to one side area of ​​the third display area with respect to a center line of the electronic device. The electronic device further includes a second plate coupled to the third portion in a position corresponding to an area on the other side of the second display area relative to a center line of the electronic device.

[0213] According to an exemplary embodiment of the present invention, the electronic device further includes a flexible display module. The flexible display module includes a third display area disposed corresponding to the hinge module, a first display area extending from the third display area and disposed in the first housing, and a second display area extending from the third display area and disposed in the second housing. The hinge module further includes a first connecting portion connecting the first bracket and the first portion, and a second connecting portion connecting the second bracket and the third portion. The electronic device further includes a first plate coupled to the first connecting portion in a position corresponding to one side of the third display area based on a center line of the electronic device, and a second plate coupled to the second connecting portion in a position corresponding to the other side of the third display area based on the center line of the electronic device. The first connecting portion is rotatably connected to the first bracket via a first pin that is parallel to the first rotation axis. The first coupling portion includes a second pin parallel to the first pin, the second pin being disposed on a first pin rail provided on the first portion. The second connecting portion is rotatably connected to the second bracket via a third pin that is parallel to the third rotation axis. The second connecting portion includes a fourth pin that is parallel to the third pin. The fourth pin is disposed on a second pin rail provided on the third portion.

[0214] In accordance with an exemplary embodiment of the present invention, the hinge module further includes an actuator positioned corresponding to a centerline of the electronic device. The first portion is coupled to the actuator so as to be rotatable relative to the actuator about a first rotation axis. The second portion is coupled to the actuator so as to be rotatable relative to the actuator about a second axis of rotation. The third portion is coupled to the actuator so as to be rotatable relative to the actuator about a third rotation axis. The fourth portion is coupled to the actuator so as to be rotatable relative to the actuator about a fourth rotation axis. The actuator includes a first shaft coupled to the second portion and providing a second axis of rotation. The actuator includes a second shaft coupled to the fourth portion and providing a fourth axis of rotation. The actuator includes a third circular gear that meshes with a first circular gear included on the first shaft. The actuator includes a fourth circular gear that meshes with the second and third circular gears included on the second shaft.

[0215] According to an exemplary embodiment of the present invention, the actuator includes a resiliently supported cam gear, and the first shaft and the second shaft are coupled to the cam gear. In accordance with an exemplary embodiment of the present invention, the electronic device further includes a hinge housing coupled with the actuator. When the electronic device is switched from the unfolded state to the folded state, the hinge housing is exposed to the outside through the gap between the first housing and the second housing, providing a part of the outer surface of the electronic device.

[0216] According to an exemplary embodiment of the present invention, an electronic device includes a first housing and a second housing. The electronic device includes a hinge module connecting a first housing and a second housing. The hinge module includes a first portion configured to be rotatable about a first axis of rotation. The hinge module includes a second portion configured to be rotatable about a second axis of rotation. The second rotation axis is parallel to the first rotation axis and is spaced apart from the first rotation axis. The hinge module includes a first bracket fixed to the first housing. The first bracket is coupled to the first portion and the second portion. The hinge module includes a third portion configured to be rotatable about a third rotation axis. The hinge module includes a fourth portion configured to be rotatable about a fourth rotation axis. The hinge module includes a second bracket fixed to the second housing. The second bracket is connected to the third and fourth portions.

[0217] The third rotation axis is positioned symmetrically to the first rotation axis with respect to the center line of the electronic device. The third portion is provided symmetrically to the first portion with respect to a centerline of the electronic device. The fourth rotation axis is positioned symmetrically to the second rotation axis with respect to the center line of the electronic device. The fourth portion is provided symmetrically to the second portion with respect to the centerline of the electronic device. The first portion and the first bracket are connected to each other so as to be slidable relative to each other in a first linear direction. The second portion and the first bracket are connected to each other so as to be slidable relative to each other in a second linear direction different from the first linear direction. The third portion and the second bracket are connected to each other so as to be slidable relative to each other in a third linear direction symmetrical to the first linear direction with respect to a center line of the electronic device. The fourth portion and the second bracket are connected to each other so as to be slidable relative to each other in a fourth linear direction symmetrical to the second linear direction with respect to the center line of the electronic device. When the angle between the first housing and the second housing changes, the first and second portions slide relative to the first bracket, and the third and fourth portions slide relative to the second bracket.

[0218] According to an exemplary embodiment of the present invention, the electronic device further includes a flexible display module. The flexible display module includes a third display area disposed corresponding to the hinge module, a first display area extending from the third display area and disposed in the first housing, and a second display area extending from the third display area and disposed in the second housing. According to an exemplary embodiment of the present invention, the electronic device further includes a first plate coupled to the first portion and corresponding to one side area of ​​the third display area with respect to a center line of the electronic device. The electronic device further includes a second plate coupled to the third portion, the second plate corresponding to an area on the other side of the third display area relative to a center line of the electronic device.

[0219] According to an exemplary embodiment of the present invention, the hinge module further includes a first coupling portion connecting the first portion and the first bracket, and a second coupling portion connecting the third portion and the second bracket. The electronic device further includes a first plate coupled to the first connecting portion, the first plate corresponding to one side area of ​​the third display area with respect to a center line of the electronic device. The electronic device further includes a second plate coupled to the second connecting portion in a position corresponding to an area on the other side of the third display area with respect to a center line of the electronic device. The first connecting portion is rotatably connected to the first bracket via a first pin that is parallel to the first rotation axis. The first coupling portion includes a second pin parallel to the first pin, the second pin being disposed on a first pin rail provided on the first portion. The second connecting portion is rotatably connected to the second bracket via a third pin that is parallel to the third rotation axis. The second connecting portion includes a fourth pin that is parallel to the third pin. The fourth pin is disposed on a second pin rail provided on the third portion.

[0220] In accordance with an exemplary embodiment of the present invention, the hinge module further includes an actuator positioned corresponding to a centerline of the electronic device. The first portion is coupled to the actuator so as to be rotatable about a first rotation axis. The second portion is coupled to the actuator so as to be rotatable about a second rotation axis. The first portion is coupled to the actuator so as to be rotatable about a first rotation axis. The third portion is coupled to the actuator so as to be rotatable about a third rotation axis. The fourth portion is coupled to the actuator so as to be rotatable about a fourth rotation axis. The actuator includes a first shaft. The first shaft is coupled to the second portion and provides a second axis of rotation. The actuator includes a second shaft. The second shaft is coupled to the fourth portion and provides a fourth axis of rotation. The actuator includes a third circular gear that meshes with a first circular gear included on the first shaft. The actuator includes a fourth circular gear that meshes with the second and third circular gears included on the second shaft. According to an exemplary embodiment of the present invention, the actuator includes a resiliently supported cam gear. The first shaft and the second shaft are coupled to a cam gear.

[0221] The embodiments disclosed in the specification and drawings are merely specific examples presented to more easily explain the technical contents and facilitate understanding of the present invention, and are not intended to limit the scope of the present invention. Therefore, the scope of the various embodiments of the present invention should be interpreted as including modifications and variations in addition to the embodiments disclosed herein. Additionally, it will be understood that any embodiment described herein may be used in conjunction with any other embodiment described herein. [Explanation of symbols]

[0222] 2. Foldable electronic devices 5A 1st Hinge Module 5B Second hinge module 5C 3rd hinge module 5D, 6D guide rail assembly 20 Foldable housing 21, 22 (1st and 2nd) Housing 23 Hinge housing 24 Flexible Display Module 25 Display 51A, 51B, 51C First bracket 51D guide rail 52A, 52B, 52C Second bracket 52D 1st slider 53A, 53B, 53C bracket connection parts 53D 2nd slider 61, 62 (1st and 2nd) plates 100 Network Environment 101, 102, 104, 201, 301 Electronic equipment 108 servers 120 processors 121 Main Processor 123 Auxiliary Processor 130 memory 132 Volatile Memory 134 Non-volatile memory 136 Internal memory 138 External Memory 140 Programs 142 O.S. 144 Middleware 146 Applications 150 Input Module 155 Acoustic Output Module 160 Display Module 170 Audio Module 176 Sensor Module 177 Interface 178 connection terminal 179 Haptic Module 180 camera module 188 Power Management Module 189 Battery 190 Communication Module 192 Wireless Communication Module 194 Wired Communication Module 196 Subscriber Identity Module 197 Antenna Module 198 Network 1 199 Second Network 211, 221 (1st, 2nd) frames 212, 222 (1st, 2nd) Cover 240 Flexible Display 241 Display Panel 241a Light-emitting layer 241b TFT film 241c Sealing layer 242 Base Film 243 Lower Panel 243a Light blocking layer 243b Buffer layer 243c lower layer 243d composite sheet 243e Copper Sheet 244 Optical layer 245 Transparent Cover 246 Optical transparent adhesive materials 247 Support Sheet 301 Mike Hall 302, 303 (1st, 2nd) speaker holes 304 Optical Sensor 305~308 (1st~4th) Camera Modules 309 Flash 310, 311 (1st, 2nd) key input device 312 Connector hole 411, 421 (1st, 2nd) support part 411A 1st support area 412, 422 (1st, 2nd) Side 421A 2nd support area 711, 712 (1st, 2nd) Hinge Housing Cover 810, 820, 830, 840 (1st to 4th) parts B11, B12 (1st, 2nd) screw fastening parts LMG1, LMG2, LMG3, LMG4 (1st to 4th) linear motion guides SH11, SH12 (1st, 2nd) screw holes

Claims

1. An electronic device (2), A first housing (21) and a second housing (22), a hinge module (5A) connecting the first housing (21) and the second housing (22); a flexible display (24) housed in the first housing (21) and the second housing (22); The hinge module (5A) comprises: a rotational support bracket (910) including a first rotational movement guide rail; a first portion (810) including a first rotary motion slider (810A) configured to rotate about a first rotation axis (C1) relative to the first rotary motion guide rail; a second part (820) configured to rotate about a second axis of rotation (C2) parallel to and spaced from the first axis of rotation (C1); a first bracket (51A) fixed to the first housing (21); The first bracket (51A) is a fifth portion 1010 slidably connected to the first portion 810 in a first linear direction LD1; a sixth portion (1020) slidably connected to the second portion (820) in a second linear direction (LD2) different from the first linear direction (LD1); When the angle between the first housing (21) and the second housing (22) changes, the first part (810) and the fifth part (1010) of the first bracket (51A) slide relative to each other, The second portion (820) and the sixth portion (1020) of the first bracket (51A) slide relative to each other, The electronic device is characterized in that, when in a folded state, the first part (810) is configured to be pulled into the fifth part (1010) of the first bracket (51A) in a direction opposite to the flexible display (24).

2. The first portion (810) includes at least one first recess (R11, R12, R13, R14) formed in the first linear direction (LD1), 2. The electronic device of claim 1, wherein the first bracket (51A) includes at least one first insert (I11, I12, I13, I14) accommodated in the at least one first recess (R11, R12, R13, R14) and extending in the first linear direction (LD1).

3. An electronic device as described in claim 1, characterized in that the first linear direction (LD1) and the second linear direction (LD2) form an acute angle with each other.

4. The hinge module (5A) comprises: a second rotational movement guide rail formed on the rotation support bracket (910); a third portion (830) including a second rotary motion slider (830A) configured to rotate about a third rotation axis (C3) relative to the second rotary motion guide rail; a fourth portion (840) configured to rotate about a fourth axis of rotation (C4); a second bracket (52A) fixed to the second housing (22); The second bracket (52A) is a seventh portion 1110 slidably connected to the third portion 830 in a third linear direction LD3; an eighth portion (1120) slidably connected to the fourth portion (840) in a fourth linear direction (LD4) different from the third linear direction (LD3); When the angle between the first housing (21) and the second housing (22) changes, the third portion (830) and the seventh portion (1110) of the second bracket (52A) slide relative to each other, The fourth portion (840) and the eighth portion (1120) of the second bracket (52A) slide relative to each other, 2. The electronic device of claim 1, wherein, in a folded state, the third portion (830) is configured to be pulled in a direction opposite to the flexible display (24) relative to the seventh portion (1110) of the second bracket (52A).

5. The third rotation axis (C3) is disposed symmetrically with respect to the first rotation axis (C1), The third portion (830) is disposed symmetrically with the first portion (810), The fourth rotation axis (C4) is disposed symmetrically with respect to the second rotation axis (C2), The fourth portion (840) is disposed symmetrically with the second portion (820), The third portion 830 and the seventh portion 1110 of the second bracket 52A are connected to each other so as to be slidable relative to each other in the third linear direction LD3 symmetrical to the first linear direction LD1, The electronic device of claim 4, wherein the fourth portion (840) and the eighth portion (1120) of the second bracket (52A) are connected to each other so as to be slidable in the fourth linear direction (LD4) symmetrical to the second linear direction (LD2).

6. The upper surface of the rotation support bracket (910) is provided with an arc-shaped recess having an open end, 2. The electronic device of claim 1, wherein the first rotational movement slider (810A) slides along the arc-shaped recess, allowing the first portion (810) to rotate relative to the rotational support bracket (910).

7. The electronic device described in claim 1, characterized in that the second part (820) and the first bracket (51A) are configured so that as the angle between the first housing (21) and the second housing (22) decreases, the second part (820) and the sixth part (1020) of the first bracket (51A) slide relative to each other, and the distance between the sixth part (1020) of the first bracket (51A) and the second rotation axis (C2) increases.

8. The electronic device described in Claim 2, characterized in that the first part (810) further includes a first linear motion slider (810B) connected to the fifth part (1010) of the first bracket (51A) and including at least one first recess (R11, R12, R13, R14).

9. An electronic device (2), A first housing (21) and a second housing (22), a hinge module (5A) that rotatably connects the first housing (21) and the second housing (22) to each other and changes the angle between the first housing (21) and the second housing (22); a flexible display (24) housed in the first housing (21) and the second housing (22); The hinge module (5A) comprises: a rotational support bracket (910) including a first rotational movement guide rail; a first portion (810) including a first rotary motion slider (810A) configured to rotate relative to the first rotary motion guide rail about a first rotation axis (C1); a second part (820) configured to rotate about a second axis of rotation (C2) parallel to and spaced apart from said first axis of rotation (C1); a first bracket (51A) fixed to the first housing (21) and at least partially disposed between the flexible display (24) and a part of the first housing (21) to which the first bracket (51A) is fixed; The first bracket (51A) includes a fifth portion (1010) and a sixth portion (1020), The first portion 810 and the fifth portion 1010 of the first bracket 51A are connected to each other so as to be slidable relative to each other along a first linear direction LD1 relative to the first bracket 51A, The second portion 820 and the sixth portion 1020 of the first bracket 51A are connected to each other so as to be slidable relative to each other along a second linear direction LD2 different from the first linear direction LD1 relative to the first bracket 51A, The first portion (810), the second portion (820), and the first bracket (51A) are configured such that, when an angle between the first housing (21) and the second housing (22) changes, the first portion (810) and the fifth portion (1010) of the first bracket (51A) slide relative to each other, and the second portion (820) and the sixth portion (1020) of the first bracket (51A) slide relative to each other; The first portion (810) and the first bracket (51A) are configured such that as the angle between the first housing (21) and the second housing (22) decreases, the first portion (810) and the fifth portion (1010) of the first bracket (51A) slide relative to each other, and the distance between the first portion (810) and a portion of the first housing (21) decreases.

10. The first portion (810) includes at least one first recess (R11, R12, R13, R14) formed in the first linear direction (LD1), 10. The electronic device of claim 9, wherein the first bracket (51A) includes at least one first insert (I11, I12, I13, I14) accommodated in the at least one first recess (R11, R12, R13, R14) and extending in the first linear direction (LD1).

11. An electronic device as described in Claim 9, characterized in that the first linear direction (LD1) and the second linear direction (LD2) form an acute angle with each other.

12. The hinge module (5A) comprises: a second rotational movement guide rail formed on the rotation support bracket (910); a third portion (830) including a second rotary motion slider (830A) configured to rotate about a third rotation axis (C3) relative to the second rotary motion guide rail; a fourth portion (840) configured to rotate about a fourth axis of rotation (C4); a second bracket (52A) fixed to the second housing (22) and including a seventh portion (1110) and an eighth portion (1120); The third portion (830) and the seventh portion (1110) of the second bracket (52A) are slidably connected to each other along a third linear direction (LD3) relative to the second bracket (52A), The fourth portion 840 and the eighth portion 1120 of the second bracket 52A are connected to each other so as to be slidable relative to each other along a fourth linear direction LD4 relative to the second bracket 52A, which is different from the third linear direction LD3; the third portion (830), the fourth portion (840), and the second bracket (52A) are configured such that, when the angle between the first housing (21) and the second housing (22) changes, the third portion (830) and the seventh portion (1110) of the second bracket (52A) slide relative to each other, and the fourth portion (840) and the eighth portion (1120) of the second bracket (52A) slide relative to each other; The electronic device of claim 9, characterized in that the third portion (830) and the second bracket (52A) are configured such that as the angle between the first housing (21) and the second housing (22) decreases, the third portion (830) and the seventh portion (1110) of the second bracket (52A) slide relative to each other, and the distance between the third portion (830) and a portion of the second housing (22) decreases.

13. The third rotation axis (C3) is disposed symmetrically with respect to the first rotation axis (C1), The third portion (830) is disposed symmetrically with the first portion (810), The fourth rotation axis (C4) is disposed symmetrically with respect to the second rotation axis (C2), The fourth portion (840) is disposed symmetrically with the second portion (820), The third linear direction (LD3) is symmetrical to the first linear direction (LD1), The electronic device according to claim 12, wherein the fourth linear direction (LD4) is symmetrical to the second linear direction (LD2).

14. The upper surface of the rotation support bracket (910) is provided with an arc-shaped recess having an open end, 10. The electronic device of claim 9, wherein the first rotational movement slider (810A) slides along the arc-shaped recess to allow the first portion (810) to rotate relative to the rotational support bracket (910).

15. The electronic device described in Claim 10, characterized in that the first part (810) includes a first linear motion slider (810B) connected to the fifth part (1010) of the first bracket (51A) and including at least one first recess (R11, R12, R13, R14).

16. An electronic device (2), A first housing (21) and a second housing (22), a hinge module (5A) that rotatably connects the first housing (21) and the second housing (22) to each other and changes the angle between the first housing (21) and the second housing (22); a flexible display (24) housed in the first housing (21) and the second housing (22); The hinge module (5A) comprises: a first shaft (930); a rotational support bracket (910) including a first rotational movement guide rail; a first portion (810) including a first rotational movement slider (810A) and a first linear movement slider (810B) configured to rotate about a first rotation axis (C1) relative to a first rotational movement guide rail; a second part (820) configured to rotate about a second axis of rotation (C2) parallel to and spaced apart from the first axis of rotation (C1), and including second linear motion sliders (820A, 820B); a first bracket (51A) fixed to the first housing (21); The first bracket (51A) includes a fifth portion (1010) and a sixth portion (1020), The first linear motion slider 810B of the first portion 810 and the fifth portion 1010 of the first bracket 51A are connected to each other so as to be slidable relative to each other along a first linear direction LD1 relative to the first bracket 51A, The second linear motion sliders (820A, 820B) of the second portion (820) and the sixth portion (1020) of the first bracket (51A) are connected to each other so as to be slidable along a second linear direction (LD2) different from the first linear direction (LD1) relative to the first bracket (51A), The first part (810), the second part (820), and the first bracket (51A) are configured such that, when the angle between the first housing (21) and the second housing (22) changes, the first part (810) and the fifth part (1010) of the first bracket (51A) slide relative to each other, and the second part (820) and the sixth part (1020) of the first bracket (51A) slide relative to each other.

17. An electronic device as described in Claim 16, characterized in that the first linear direction (LD1) and the second linear direction (LD2) form an acute angle with each other.

18. The first bracket (51A) is at least partially disposed between the flexible display (24) and a portion of the first housing (21) fixed to the first bracket (51A), The electronic device of claim 16, characterized in that the first part (810) and the first bracket (51A) are configured such that as the angle between the first housing (21) and the second housing (22) decreases, the first part (810) and the fifth part (1010) of the first bracket (51A) slide relative to each other, resulting in a decrease in the distance between the first part (810) and the part of the first housing (21) and the first part (810) moving laterally relative to each other.

19. The hinge module (5A) comprises: a second rotational movement guide rail formed on the rotation support bracket (910); a third portion (830) including a second rotary motion slider (830A) configured to rotate about a third rotation axis (C3) relative to the second rotary motion guide rail; a fourth portion (840) configured to rotate about a fourth axis of rotation (C4); a second bracket (52A) fixed to the second housing (22); The second bracket (52A) includes a seventh portion (1110) and an eighth portion (1120), The third portion 830 and the seventh portion 1110 of the second bracket 52A are connected to each other so as to be slidable relative to each other along a third linear direction LD3 relative to the second bracket 52A, The fourth portion 840 and the eighth portion 1120 of the second bracket 52A are connected to each other so as to be slidable relative to each other along a fourth linear direction LD4 relative to the second bracket 52A, which is different from the third linear direction LD3, The electronic device of claim 16, characterized in that the third part (830), the fourth part (840), and the second bracket (52A) are configured such that when the angle between the first housing (21) and the second housing (22) changes, the third part (830) and the seventh part (1110) of the second bracket (52A) slide relative to each other, and the fourth part (840) and the eighth part (1120) of the second bracket (52A) slide relative to each other.

20. The third rotation axis (C3) is arranged symmetrically with the first rotation axis (C1), The third portion (830) is disposed symmetrically with the first portion (810), The fourth rotation axis (C4) is disposed symmetrically with respect to the second rotation axis (C2), The fourth portion (840) is disposed symmetrically with the second portion (820), The third linear direction (LD3) is symmetrical to the first linear direction (LD1), 20. The electronic device of claim 19, wherein the fourth linear direction (LD4) is symmetrical to the second linear direction (LD2).

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