KR20220040632A - Foldable electronic device - Google Patents

Abstract

The present invention relates to a foldable electronic device capable of reducing a memory access delay of a service module. According to an embodiment of the present invention, the electronic device includes: a foldable housing including a first surface of the electronic device and a second surface of the electronic device, which faces in an opposite direction of a direction of the first surface, and folded out of the first surface based on a folding axis; a flexible display positioned in the housing, visually exposed through the first surface, and including a first region, a second region, and a folding region between the first region and the second region; and a display support assembly disposed on the rear surface of the flexible display, wherein the display support assembly includes a folding support structure including a first support plate corresponding to the first region, a second support plate corresponding to the second region, and a plurality of joints arranged to be sequentially engaged along the folding region from the first support plate to the second support plate and parallel to the folding axis. One of the plurality of joints may be coupled to a hinge structure forming the folding axis. Various embodiments are possible.

Description

FOLDABLE ELECTRONIC DEVICE

Various embodiments of the present invention relate to a foldable electronic device.

With the development of electronic communication technology, electronic devices having various functions are emerging. These electronic devices may have a convergence function that complexly performs one or more functions. Recently, as the functional gap between manufacturers is remarkably reduced, electronic devices are being provided in various form factors while strengthening design aspects to satisfy consumers' purchasing desires. For example, there is a foldable electronic device in which a screen can be folded.

The foldable electronic device may include a flexible display. When the foldable electronic device is switched from an unfolded state to a folded state, stress may occur in the folding area of the flexible display. Stress may decrease or lose elasticity of the folding area, and even if the foldable electronic device is switched from a folded state to an unfolded state, the folding area may not be restored to its original state but may be deformed into an extended form. The folding area in which elasticity is reduced or lost may cause a wrinkle phenomenon in the unfolded state of the foldable electronic device.

Various embodiments of the present disclosure may provide a foldable electronic device for reducing wrinkles on a folding area of a flexible display.

The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

According to an embodiment of the present invention, the electronic device includes a first surface of the electronic device and a second surface of the electronic device facing in a direction opposite to the first surface, and the first surface of the electronic device is based on a folding axis. a housing that is foldable out of the face, positioned within the housing, visually exposed through the first face, and flexible comprising a first area, a second area, and a foldable area between the first area and the second area a display and a display support assembly disposed on a rear surface of the flexible display, wherein a first support plate corresponding to the first area, a second support plate corresponding to the second area, and the second support plate from the first support plate a display support assembly comprising a folding support structure arranged in sequential engagement along the folding area with a support plate, the folding support structure including a plurality of joints parallel to the folding axis, one of the plurality of joints; of the joint may be combined with a hinge structure forming the folding shaft.

The foldable electronic device according to an embodiment of the present invention can reduce the wrinkle phenomenon of the folding area of the flexible display, so that the quality reliability of the foldable electronic device can be improved.

In addition, effects obtainable or predicted by various embodiments of the present invention will be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. For example, various effects predicted according to various embodiments of the present invention will be disclosed in the detailed description to be described later.

1 is a block diagram of an electronic device in a network environment, according to various embodiments of the present disclosure;
2 is a perspective view of an electronic device in an unfolded state according to an exemplary embodiment;
3 is a perspective view of an electronic device according to an exemplary embodiment.
4 is an exploded view of an electronic device according to an exemplary embodiment.
5 and 6 are perspective views of a display support assembly in an unfolded state according to an exemplary embodiment.
7 and 8 are perspective views of a folding support structure in an unfolded state according to an exemplary embodiment.
9 and 10 are perspective views of a fifth joint included in the folding support structure according to an exemplary embodiment.
11 illustrates a cross-sectional structure of a line AA′ in the fifth joint of FIG. 10 according to an embodiment.
12 illustrates a cross-sectional structure of a line BB′ in the fifth joint of FIG. 10 according to an exemplary embodiment.
FIG. 13 illustrates a cross-sectional structure of a line DD′ in the display support assembly in an unfolded state shown in FIG. 6 according to an exemplary embodiment.
14 illustrates a partial cross-sectional structure of an electronic device in an unfolded state according to an exemplary embodiment.
15, 16, 17, 18, or 19 illustrate a cross-sectional structure of a flexible display and a display support assembly when the electronic device is in an intermediate state when the electronic device is folded at various angles, according to an embodiment.
20 illustrates a cross-sectional structure of a flexible display and a display support assembly in a fully folded state of an electronic device according to an exemplary embodiment.
21 is an exploded view of the hinge assembly of FIG. 4 according to an embodiment.
22 shows a first hinge plate, a second hinge plate, and a first conical gear according to an embodiment.
23 illustrates a partial cross-sectional structure of an unfolded state of an electronic device according to an exemplary embodiment.
24 illustrates a partial cross-sectional structure of an electronic device in a fully folded state according to an exemplary embodiment.
25 illustrates a cross-sectional structure of a part of an electronic device in an unfolded state according to an exemplary embodiment.
26 is a plan view of a part of an electronic device in an unfolded state according to an exemplary embodiment.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings.

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments.

Referring to FIG. 1 , in a network environment 100 , the electronic device 101 communicates with the electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 may be included. In some embodiments, at least one of these components (eg, the connection terminal 178 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, the program 140 ) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 uses less power than the main processor 121 or is set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The secondary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the coprocessor 123 (eg, image signal processor or communication processor) may be implemented as part of another functionally related component (eg, camera module 180 or communication module 190). there is. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but the above-described example is not limited to The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks, or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176 ). The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134 .

The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .

The input module 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may output a sound signal to the outside of the electronic device 101 . The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. The receiver may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device. According to an embodiment, the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 . Sound may be output through the electronic device 102 (eg, a speaker or headphones).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, 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, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more designated protocols that may be used for the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses the subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified or authenticated.

The wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. The wireless communication module 192 includes various technologies for securing performance in a high frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. Technologies such as input/output (full dimensional MIMO (FD-MIMO)), array antenna, analog beam-forming, or large scale antenna may be supported. The wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ). According to an embodiment, the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) may be supported.

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (eg, a PCB). According to an embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be chosen. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving a signal of the designated high frequency band. can

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( eg commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or part of the operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 is to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 . The electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, but it should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, "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 "A , B, or C" each may include any one of, or all possible combinations of, items listed together in the corresponding one of the phrases. Terms such as “first”, “second”, or “first” or “second” may be used simply to distinguish the component from other such components, and may refer to the component in another aspect (e.g., importance or order) is not limited. It is said that one (eg, first) component is "coupled" or "connected" to another (eg, second) component, with or without the terms "functionally" or "communicatively". When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term “module” used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit. can be used as A module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

According to various embodiments of the present document, one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101) may be implemented as software (eg, the program 140) including For example, the processor (eg, the processor 120 ) of the device (eg, the electronic device 101 ) may call at least one command among one or more commands stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term refers to the case where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be included in a computer program product (computer program product) and provided. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store™) or on two user devices ( It can be distributed online (eg download or upload), directly between smartphones (eg smartphones). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, a module or a program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

2 is a perspective view of the electronic device 2 in a flat or unfolded state according to an embodiment.

Referring to FIG. 2 , the electronic device 2 may include a foldable housing 20 . The foldable housing 20 may form a first surface 20A of the electronic device 2 and a second surface 20B of the electronic device 2 facing in a direction opposite to the first surface 20A. . The foldable housing 20 may form a first side 20C and a second side 20D of the electronic device 2 that at least partially enclose the space between the first side 20A and the second side 20B. can The first surface 20A may include a first cover area (①), a second cover area (②), and a folding cover area (F) between the first cover area (①) and the second cover area (②). can In the unfolded state of the foldable housing 20 , the first surface 20A is flatly disposed, and the first cover area ①, the second cover area ②, and the folding cover area F are substantially the same direction can be directed. For example, in the unfolded state of the foldable housing 20, the first cover area (①) and the second cover area (②) may form an angle of about 180 degrees. The second surface 20B may include a third cover area (③) and a fourth cover area (④). The third cover area (③) is located on the opposite side to the first cover area (①) of the first surface 20A, and may face in the opposite direction to the first cover area (①). The fourth cover area (④) is located on the opposite side to the second cover area (②) of the first surface 20A, and may face in the opposite direction to the second cover area (②). According to an embodiment, the foldable housing 20 may be implemented as an out-folding structure in which the first surface 20A is folded outward. In the unfolded state of the foldable housing 20 (see FIG. 2 ), the folding cover area F is arranged in a plane, and the first cover area ① and the second cover area ② form an angle of about 180 degrees. can When the foldable housing 20 is switched from the unfolded state to the folded state, the folding cover area F is arranged in a curved surface, and the first cover area ① and the second cover area ② are at an angle of about 180 degrees. Different angles can be achieved. The folded state may include a fully folded state or an intermediate state. The fully folded state is a fully folded state in which the third cover region ③ and the fourth cover region ④ of the second surface 20B are no longer close, for example, the third cover region ③ and The fourth cover area (④) may form an angle of about 0 degrees to about 10 degrees. In a fully folded state, the second surface 20B may not be substantially exposed to the outside. The intermediate state may refer to a state between an unfolded state and a fully collapsed state. The folding cover area F of the first surface 20A may be more bent in the fully folded state than in the intermediate state.

According to an embodiment, the foldable housing 20 may include a front cover (eg, a window) 201 forming at least a part of the first surface 20A. The front cover 201 may be substantially transparent, for example. The flexible display 30 may be located in the internal space of the electronic device 2 and may be visually exposed at least partially through the first surface 20A. For example, the flexible display 30 may be positioned in the internal space of the electronic device 2 by overlapping at least partially with the front cover 201 , and the light output from the flexible display 30 may cover the front cover 201 . You can go through it and go outside. The flexible display 30 may be, for example, a first display area overlapping the first cover area ① of the first surface 20A, and a second cover area ② overlapping the first surface 20A. It may include a second display area and a third display area overlapping the folding cover area (F). The front cover 201 may protect the flexible display 30 from the outside. In some embodiments, the front cover 201 may be integrally formed with the flexible display 30 as a component included in the flexible display 30 . The front cover 201 may be implemented in the form of a thin film such as a film to have flexibility. The front cover 201 may include, for example, a plastic film (eg, polyimide film) or thin glass (eg, ultra-thin glass (UTG)). In various embodiments, the front The cover 201 may include a plurality of layers, for example, the front cover 201 may be formed of a plastic film or thin glass with various polymer materials (eg, PET (polyester), PI (polyimide), or TPU (thermoplastic). It may be in a form in which a coating layer or a protective layer of polyurethane)) is disposed.

According to one embodiment, the foldable housing 20 includes a first housing portion (or first housing structure) 210 , a second housing portion (or second housing structure) 220 , and/or a hinge assembly. assembly) (or a hinge structure) 230 . The first housing unit 210 and the second housing unit 220 are connected to each other by a hinge assembly 230 , and the folding axis C of the foldable housing 20 (eg, the rotation axis of the hinge assembly 230 ) is connected to the first housing unit 210 and the second housing unit 220 . It may be mutually rotatable with respect to the reference. The first housing unit 210 may include a first rear cover 211 that forms at least a part of the third cover area (③) of the second surface 20B. The first housing unit 210 may include a first side member (or a first side bezel structure) 212 . The first side member 212 may form, for example, a first side surface 20C that at least partially surrounds the space between the first surface 20A and the third cover area ③. The second housing 220 may include a second rear cover 221 forming at least a part of the fourth cover area ④ of the second surface 20B. The second housing unit 220 may include a second side member (or a second side bezel structure) 222 . The second side member 222 may form, for example, a second side surface 20D that at least partially surrounds the space between the first surface 20A and the fourth cover area ④. In the fully folded state of the foldable housing 20 , the first side member 212 and the second side member 222 may be overlapped and aligned. The first side member 212 and/or the second side member 222 may be formed of, for example, ceramic, polymer, metal (eg, aluminum, stainless steel, or magnesium), or a combination of at least two of the foregoing. can be formed by The first back cover 211 and/or the second back cover 221 may be substantially opaque. The first back cover 211 and/or the second back cover 221 may be, for example, coated or colored glass, ceramic, polymer, metal (eg, aluminum, stainless steel, or magnesium), or materials thereof. It may be formed by a combination of at least two of them. In some embodiments, the first back cover 211 and the first side member 212 may be integrally formed and may include the same material. In some embodiments, the second back cover 221 and the second side member 222 may be integrally formed and may include the same material.

The first housing part 210 is defined including a partial area of the front cover 201 forming the first folding cover area F1 positioned on one side with respect to the folding axis C among the folding cover areas F. can be The second housing part 220 is defined including a partial area of the front cover 201 forming the second folding cover area F2 located on the other side with respect to the folding axis C among the folding cover areas F. can be

According to various embodiments, the electronic device 2 may be the electronic device 101 of FIG. 1 or may include at least one of components included in the electronic device 101 of FIG. 1 . The electronic device 2 includes, for example, an input module (eg, the input module 150 of FIG. 1 ), a sound output module (eg, the sound output module 155 of FIG. 1 ), and a camera module (eg, FIG. 1 ) of the camera module 180), a sensor module (eg, the sensor module 176 of FIG. 1), or a connection terminal (eg, the connection terminal 178 of FIG. 1). In various embodiments, the electronic device 2 may omit at least one of components included in the electronic device 101 of FIG. 1 or may additionally include other components.

The input module may include, for example, a microphone positioned inside the electronic device 2 , and a first side 20A, a second side 20B, a first side 20C, or a second side corresponding to the microphone It may include a microphone hole formed in (20D). In various embodiments, the electronic device 2 may include a plurality of microphones capable of detecting the direction of sound.

The input module may include, for example, a key input device. In one embodiment, the key input device may be located on the first side 20C or the second side 20D. In some embodiments, the key input device may include at least one sensor module.

The sound output module may include, for example, a speaker located inside the electronic device 2 , and a first side 20A, a second side 20B, a first side 20C, or a second side corresponding to the speaker A speaker hole formed in the side surface 20D may be included. In various embodiments, the speaker may be a receiver for calls. In various embodiments, the microphone hole and the speaker hole may be implemented as one hole. In some embodiments, when a piezo speaker is included, the speaker hole may be omitted.

The camera module may be, for example, a first camera module (or front camera module) located inside the electronic device 2 corresponding to the first side 20A, and/or corresponding to the second side 20B It may include a second camera module (or a rear camera module) located inside the electronic device 2 . The first camera module may photograph a subject positioned toward the first surface 20A, and the second camera module may photograph a subject positioned toward the second surface 20B. The camera module may include a flash (eg, a light emitting diode or a xenon lamp), and the flash may output, for example, light necessary for photographing the second camera module. The first camera module and/or the second camera module may include one or a plurality of lenses, an image sensor, and/or an image signal processor.

According to an embodiment, the first camera module may be aligned with an opening (eg, a through hole or a notch) formed in the flexible display 30 and positioned inside the electronic device 2 . In this case, external light may pass through the opening and a partial area of the front cover 201 overlapping the opening to reach the first camera module. According to some embodiments, the first camera module may be disposed at the bottom of the flexible display 30, and the position of the first camera module is not visually differentiated (or exposed) and a related function (eg, image taking) is performed. can do. For example, the first camera module may be located on the rear surface of the flexible display 30 , or below or beneath the flexible display 30 . In various embodiments, the first camera module may be aligned and positioned in a recess formed on the rear surface of the flexible display 30 . The first camera module may be disposed to overlap at least a portion of the screen, and may acquire an image of an external subject without being exposed to the outside. In this case, a portion of the flexible display 30 overlapping at least partially with the first camera module may include a pixel structure and/or a wiring structure different from that of the other areas. For example, a portion of the flexible display 30 that is at least partially overlapped with the first camera module may have a different pixel density than other areas. A pixel structure and/or a wiring structure formed in a portion of the flexible display 30 overlapping at least partially with the first camera module may reduce light loss between the outside and the first camera module. According to some embodiments, pixels may not be disposed in a portion of the flexible display 30 that at least partially overlaps the first camera module.

According to an embodiment, the second camera module (eg, dual camera or triple camera) may have different properties (eg, angle of view) or functions. For example, the second camera module may include lenses having different angles of view, and the electronic device 2 changes the angle of view of the camera module performed by the electronic device 2 based on a user's selection. can be controlled For another example, the second camera module includes at least one of a wide-angle camera, a telephoto camera, a color camera, a monochrome camera, or an IR (infrared) camera (eg, a time of flight (TOF) camera, a structured light camera). may include In various embodiments, the IR camera may be operated as at least a part of a sensor module (not shown).

The sensor module may generate an electrical signal or data value corresponding to an internal operating state of the electronic device 2 or an external environmental state. The sensor module may include, for example, a proximity sensor, 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 biometric sensor (eg, a fingerprint sensor, an HRM sensor); It may include at least one of a temperature sensor, a humidity sensor, and an illuminance sensor.

According to an embodiment, the sensor module may include an optical sensor, aligned with an opening (eg, a through hole, or a notch) formed in the flexible display 30 to be positioned inside the electronic device 2 . can In this case, external light may pass through the opening and a partial region of the front cover 201 overlapping the opening to be introduced into the optical sensor.

According to some embodiments, the sensor module may be disposed at the lower end of the flexible display 30 , and the position of the sensor module may not be visually distinguished (or exposed), and a related function may be performed. For example, the sensor module may be located on the rear surface of the flexible display 30 , or below or beneath the flexible display 30 . According to various embodiments, the sensor module may be aligned and positioned in a recess formed on the rear surface of the flexible display 30 . The sensor module may be disposed to overlap at least a portion of a screen (eg, an active area or display area of the flexible display 30 ), and may perform a corresponding function without being exposed to the outside. In this case, a portion of the flexible display 30 overlapping at least partially with the sensor module may include a pixel structure and/or a wiring structure different from that of the other areas. For example, some areas of the flexible display 30 overlapping the sensor module at least partially may have different pixel densities compared to other areas. A pixel structure and/or a wiring structure formed in a partial region of the flexible display 30 overlapping at least in part with the sensor module allows various types of signals (eg, light or ultrasound) related to the sensor module to pass between the outside and the sensor module. when that loss can be reduced. According to some embodiments, a plurality of pixels may not be disposed in a partial area of the flexible display 30 that at least partially overlaps the sensor module.

The connection terminal includes, for example, a connector (eg, a USB connector) located inside the electronic device 2 , and a connector hole formed on the first side 20C or the second side 20D corresponding to the connector can do. The electronic device 2 may transmit and/or receive power and/or data with an external electronic device electrically connected to the connector through the connector hole.

3 is a perspective view of an electronic device 2 according to an embodiment. 4 is an exploded view of the electronic device 2 according to an embodiment.

3 and 4 , the electronic device 2 includes a flexible display 30 , a first side member 212 , a second side member 222 , a first supporting member 411 , and a second supporting member 412 . ), a display support assembly 500 , a hinge assembly 230 , a first back cover 211 , or a second back cover 221 .

According to an embodiment, the first support member 411 (eg, a first bracket) is disposed inside the electronic device 2 and may be connected to the first side member 212 or the first side member 411 . It may be formed integrally with the member 212 . The second support member 412 (eg, a second bracket) is disposed inside the electronic device 2 , and may be connected to the second side member 222 , or may be integrally formed with the second side member 222 . can The first supporting member 411 and/or the second supporting member 412 may be formed of, for example, a metallic material and/or a non-metallic (eg, polymer) material. The first support member 411 and the second support member 412 are frame structures capable of withstanding a load, and may contribute to durability or rigidity of the electronic device 2 .

The flexible display 30 includes a first area 31 (eg, a first display area), a second area 32 (eg, a second display area), and/or a folding area 33 (eg, a third display area). area or folding display area). The first area 31 may be positioned to overlap the first cover area ① of the first surface 20A formed by the front cover 201 . The second region 32 may be positioned to overlap the second cover region ② of the first surface 20A. The folding area 33 may be positioned to overlap the folding cover area F of the first surface 20A.

The display support assembly 500 may be coupled to the rear surface of the flexible display 30 , for example. The rear surface of the flexible display 30 may refer to, for example, a surface positioned opposite to a surface from which light is emitted from a display panel including a plurality of pixels.

5 and 6 are perspective views of the display support assembly 500 in an unfolded state according to an exemplary embodiment.

4 , 5 , and 6 , the display support assembly 500 may include a first support surface 501 , a second support surface 502 , and a third support surface 503 . The first support surface 501 may be coupled to face the first area 31 of the flexible display 30 . The second support surface 502 may be coupled to face the second area 32 of the flexible display 30 . The third support surface 503 may be coupled to face the folding area 33 of the flexible display 30 . According to one embodiment, the display support assembly 500 includes a first support plate 510 including a first support surface 501 , a second support plate 520 including a second support surface 502 , and /or a folding support structure 530 including a third support surface 503 may be included. The first support plate 510 may be positioned at least partially between the first support member 411 and the flexible display 30 , and may be coupled to the first area 31 of the flexible display 30 . The second support plate 520 may be positioned at least partially between the second support member 412 and the flexible display 30 , and may be coupled to the second region 32 of the flexible display 30 . The folding support structure 530 may be coupled to the folding area 33 of the flexible display 30 . Between the first support plate 510 and the first area 31 , between the second support plate 520 and the second area 32 , and/or between the folding support structure 530 and the folding area 33 . An adhesive member of various polymers may be disposed. The adhesive member may include, for example, a thermally responsive adhesive member, a photoreactive adhesive member, a general adhesive, and/or a double-sided tape. According to various embodiments, the first region 31 may be disposed or coupled to a first recess formed in the first support plate 510 , and the second region 32 may be connected to the second support plate 520 . ) may be disposed or coupled to the second recess formed in the . The first area 31 of the flexible display 30 may be supported by, for example, the first support plate 510 to be disposed in a substantially flat state. The second area 32 of the flexible display 30 may be supported by, for example, the second support plate 520 to be disposed in a substantially flat state. The folding area 33 of the flexible display 30 is supported by, for example, the folding support structure 530 to be smoothly disposed with respect to the first area 31 and the second area 32 of the flexible display 30 . can be The first support plate 510 , the second support plate 520 , and/or the folding support structure 530 may be formed of, for example, a polymer or a metal.

7 and 8 are perspective views of the folding support structure 530 in an unfolded state according to an exemplary embodiment.

4, 5, 6, 7, and 8, in one embodiment, the folding support structure 530 includes a plurality of joints 71, 72, 73, 74, 75, 76, 77, 78 , 79) may be included. The plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 are parallel to the folding axis C of the foldable housing 20 (eg, see FIGS. 2 , 3 , or 4 ). can do. The plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 are, for example, in the form of a bar extending in the direction of the folding axis C of the foldable housing 20 . can be The plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 may be arranged from the first support plate 510 to the second support plate 520 . Since mutual rotation between adjacent joints is possible, the folding support structure 530 may have a bending characteristic corresponding to the folding area 33 of the flexible display 30 .

According to an embodiment, the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 may be sequentially disposed in an engaged state including a plurality of gear structures. . The first support plate 510 adjacent to the first joint 71 may include a plurality of gear structures (not shown) engaged with the first joint 71 . The second support plate 520 adjacent to the ninth joint 72 may include a plurality of gear structures (not shown) engaged with the ninth joint 79 . A state in which the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , the first support plate 510 , and the second support plate 520 are meshed with a plurality of gear structures may maintain the supporting force for the folding area 33 of the flexible display 30 and reduce folding stress on the folding area 33 . The third support surface 503 of the display support assembly 500 coupled to the folding area 33 of the flexible display 30 is, for example, one surface 811 included in the first joint 71, the second One surface 821 included in the joint 72, one surface 831 included in the third joint 73, one surface 841 included in the fourth joint 74, and one surface included in the fifth joint 75 851, one surface 861 included in the sixth joint 76, one surface 871 included in the seventh joint 77, one surface 881 included in the eighth joint 78, and the ninth joint It may include one surface 891 included in (79). The number of joints is not limited to the illustrated embodiment and may vary.

9 and 10 are perspective views of the fifth joint 75 included in the folding support structure 530 according to an exemplary embodiment. FIG. 11 shows a cross-sectional structure 1100 along the line A-A′ in the fifth joint 75 of FIG. 10 according to an embodiment. FIG. 12 shows a cross-sectional structure 1200 along the line B-B′ in the fifth joint 75 of FIG. 10 according to an embodiment.

9 , 10 , 11 , and 12 , the fifth joint 75 has a first face 851 , a second face 852 , a third face 853 , and/or a fourth face 854 . may include The first surface 851 may be coupled to face the folding area 33 (refer to FIG. 4 ) of the flexible display 30 . The second surface 852 may be positioned opposite to the first surface 851 . The third surface 853 may be a side connecting the first surface 851 and the second surface 822 . The fourth surface 854 may be the other side connecting the first surface 851 and the second surface 852 , and may be located on the opposite side to the third surface 853 . The fifth joint 75 includes a first gear structure 1151 including a first tooth 1151a and a first tooth space 1151b, and a second tooth, according to one embodiment. 1152a) and a second gear structure 1152 including a second tooth groove 1152b. The fifth joint 75 includes a third gear structure 1153 including a third tooth 1153a and a third tooth groove 1153b, and a fourth tooth structure 1153 including a fourth tooth 1154a and a fourth tooth groove 1154b. gear structure 1154 . The first gear structure 1151 , the second gear structure 1152 , the third gear structure 1153 , and/or the fourth gear structure 1154 , the folding axis C of the foldable housing 20 (eg: 2, 3, or 4) may be arranged in plurality. Although the first gear structure 1151 , the second gear structure 1152 , the third gear structure 1153 , and the fourth gear structure 1154 are described in singular terms, unless the context dictates otherwise, a plurality of It can be understood as including The third face 853 may include a surface of the first gear structure 1151 and a surface of the second gear structure 1152 . The fourth face 854 may include a surface of the third gear structure 1153 and a surface of the fourth gear structure 1154 . The first tooth 1151a of the first gear structure 1151 and the third tooth groove 1153b of the third gear structure 1153 may be meshable with each other. The third tooth 1153a of the third gear structure 1153 and the first tooth groove 1151b of the first gear structure 1151 may be meshable with each other. The second tooth 1152a of the second gear structure 1152 and the fourth tooth groove 1154b of the fourth gear structure 1154 may be meshable with each other. The fourth tooth 1154a of the fourth gear structure 1154 and the second tooth groove 1152b of the second gear structure 1152 may be meshable with each other. When viewed from above the first face 851 , the first gear structure 1151 and the third gear structure 1153 can be positioned aligned with each other, and the second gear structure 1152 and the fourth gear structure 1154 . may be positioned aligned with each other. In some embodiments, when viewed from above the first face 851 , the first gear structure 1151 and the third gear structure 1153 , or the second gear structure 1152 and the fourth gear structure 1154 , are mutually exclusive. It may not be sorted.

According to an embodiment, in at least a portion of the third surface 853 and/or at least a portion of the fourth surface 854 , two gear structures adjacent to each other may be different from each other. According to an embodiment, in at least a portion of the third surface 853 and/or at least a portion of the fourth surface 854 , the plurality of gear structures may be arranged at regular intervals. The first gear structure 1151 , the second gear structure 1152 , the third gear structure 1153 , and the fourth gear structure 1154 may be arranged differently from the illustrated embodiment.

first joint 71 , second joint 72 , third joint 73 , fourth joint 74 , sixth joint 76 , seventh joint 77 , eighth joint 78 , or Although not shown, the ninth joint 79 includes a first surface 851 , a second surface 852 , a third surface 853 , and a fourth surface 854 of the fifth joint 75 . It has the same shape and may include a plurality of gear structures capable of meshing with a plurality of gear structures included in a neighboring joint. The first support plate 510 includes a plurality of gear structures (eg, the first gear structure 1151 and the second gear structure 1152 ) included in the adjacent first joint 71 . gear structures (eg, a third gear structure 1153 and a fourth gear structure 1154 ). The second support plate 520 includes a plurality of gear structures (eg, the third gear structure 1153 and the fourth gear structure 1153 ) included in the neighboring ninth joint 79 . gear structures (eg, first gear structure 1151 and second gear structure 1152 ). For example, in the fully folded state of the electronic device 2 , two adjacent joints are disposed to be rotated to each other at a maximum angle, and gear structures facing each other may be completely fitted. For example, in the fully folded state of the electronic device 2 , the first joint 71 and the first support plate 510 adjacent to each other are rotated to each other at a maximum angle, and the gear structures facing each other are completely fitted can be tailored For example, in the fully folded state of the electronic device 2 , the ninth joint 79 and the second support plate 520 adjacent to each other are rotated to each other at a maximum angle, and the gear structures facing each other are completely fitted. can be tailored

According to an embodiment, the folding support structure 530 includes an odd number of joints, and includes a fifth center located among the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 . The joint 75 may be coupled to the hinge assembly 230 . The fifth joint 75 may further include a plurality of supports 752 (see FIGS. 4 , 6 , 8 , 9 , and 10 ) disposed on the second surface 902 , compared to other joints. The plurality of support parts 752 may be coupled to the hinge assembly 230 using, for example, bolts. The plurality of support parts 752 may include, for example, a nut structure capable of fastening with bolts. The plurality of support parts 752 may be inserted into recesses included in the hinge assembly 230 . When viewed from above the flexible display 30 in the unfolded state of the electronic device 2 , the fifth joint 75 may overlap the folding axis C (eg, refer to FIGS. 2 , 3 , or 4 ). When the electronic device 2 is switched from an unfolded state to a folded state, the folding support structure 530 and the folding area 33 of the flexible display 30 coupled thereto are connected to the fifth joint ( 75) can be bent.

According to various embodiments, the fifth joint 75 has, relative to the other joints, a first extension 753 and a second extension 754 disposed on the second face 902 ( FIGS. 4 , 5 , 6 ). , 7, 8, 9, and 10) may further include. The first extension 753 and the second extension 754 are arranged, for example, in the direction of the folding axis C of the foldable housing 20 (see, for example, FIGS. 2 , 3 or 4 ), and , may be located at one end and the other end of the fifth joint 75, respectively. The first extension 753 and the second extension 754 may be respectively inserted into the first recess and the second recess formed in the hinge assembly 230 , and the fifth joint 75 and the hinge It may contribute to the coupling between the assemblies 230 .

FIG. 13 illustrates a cross-sectional structure 1300 along the line D-D′ in the display support assembly 500 in the unfolded state shown in FIG. 6 according to an embodiment. 14 illustrates a partial cross-sectional structure 1400 of the electronic device 2 in an unfolded state according to an embodiment. 15, 16, 17, 18, or 19 is a cross-sectional structure 1500 of a flexible display 30 and a display support assembly 500 when the electronic device 2 is in an intermediate state when the electronic device 2 is folded at various angles according to an embodiment. 1600, 1700, 1800, or 1900). 20 shows a cross-sectional structure 2000 of the flexible display 30 and the display support assembly 500 in the fully collapsed state of the electronic device 2 according to one embodiment.

13 and 14 , in one embodiment, the first support plate 510 includes a first support surface 501 coupled to the first area 31 (see FIG. 4 ) of the flexible display 30 . can do. The second support plate 520 may include a second support surface 502 coupled to the second area 32 (see FIG. 4 ) of the flexible display 30 . The first face 811 of the first joint 71 , the first face 821 of the second joint 72 , the first face 831 of the third joint 73 , the fourth joint 74 1st face 841, the first face 851 of the fifth joint 75, the first face 861 of the sixth joint 76, the first face 871 of the seventh joint 77, the eighth The first surface 881 of the joint 78, and the first surface 891 of the ninth joint 79 are a third support surface coupled with the folding area 33 (see FIG. 4) of the flexible display 30 (see FIG. 4). (503) can be formed. When the display support assembly 500 is in an unfolded state, the first support surface 501 , the second support surface 502 , and the third support surface 503 may be positioned on substantially the same plane.

According to an embodiment, two adjacent joints of the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , and 79 may be meshed with each other by gear structures. The first joint 71 and the first support plate 510 adjacent to each other may be engaged with each other by gear structures. The ninth joint 79 and the second support plate 520 adjacent to each other may be meshed with gear structures. Two adjacent joints, a first joint 71 and a first support plate 510 adjacent to each other, and a ninth joint 79 and a second support plate 520 adjacent to each other are formed in the electronic device 2 . In a state change of , rotation may be performed based on a bending center point on the bending center line C4 positioned on the flexible display 30 . The state change of the electronic device 2 may refer to, for example, a transition between an unfolded state (see FIGS. 13 or 14 ) and a folded state (see FIGS. 15 , 16 , 17 , 18 , 19 or 20 ).

For example, when the electronic device 2 is switched from an unfolded state to a folded state, two adjacent joints, a first joint 71 and a first support plate 510 adjacent to each other, and a second adjacent joint Mutual rotation of the ninth joint 79 and the second support plate 520 will be described with reference to the eighth joint 78 and the ninth joint 79 as follows. The eighth joint 78 is rotated in a clockwise direction (CW) with respect to the bending center point (P) on the bending center line (C4), and the ninth joint 79 is rotated in a counterclockwise direction ( CCW) can be rotated. 15 , 16 , 17 , 18 , 19 , or 20 , according to the folded state of FIG. 15 , the first tooth 1191a included in the first gear structure 1191 of the ninth joint 79 is the eighth joint 78 . The degree to which it is fitted to the third tooth groove 1183b included in the third gear structure 1183, and the third tooth 1183a included in the third gear structure 1183 of the eighth joint 78 is the ninth joint ( 79), the degree of fitting to the first tooth groove 1191b included in the first gear structure 1191 may be different. The third tooth 1183a of the third gear structure 1183 and the corresponding first tooth groove 1191b of the first gear structure 1191 have, for example, a first circle with respect to the bending center point P. It may be in the form of extending in the circumferential direction of (C1). The first tooth 1191a of the first gear structure 1191 and the third tooth groove 1183b of the third gear structure 1183 corresponding thereto are, for example, a second circle with respect to the bending center point P as a reference. It may be in the form of extending in the circumferential direction of (C2). The first circle C1 and the second circle C2 are concentric circles, and the second circle C2 may have a larger diameter than the first circle C1 . When the eighth joint 78 and the ninth joint 79 are mutually rotated in opposite directions with respect to the bending center point P, the third gear structure 1183 of the eighth joint 78 and the ninth joint ( There may be sliding between the first gear structures 1191 of 79 . For example, between the third tooth 1183a of the third gear structure 1183 and the first tooth groove 1191b of the first gear structure 1191 corresponding thereto is a first circle based on the bending center point P. There may be a sliding in the circumferential direction of (C1). For example, between the first tooth 1191a of the first gear structure 1191 and the third tooth groove 1183b of the third gear structure 1183 corresponding thereto is a second circle based on the bending center point P. There may be a sliding in the circumferential direction of (C2). The first gear structure 1191 and the third gear structure 1183 are extended in the circumferential direction of a circle with respect to the bending center point P. The first gear structure 1191 and the third gear move while rubbing each other. By reducing the frictional force between the structures 1183, it can contribute to smooth sliding and durability (or breakage prevention) of the gear structure. The shape in which the first gear structure 1191 and the third gear structure 1183 extend in the circumferential direction of a circle with respect to the bending center point P is between the first gear structure 1191 and the third gear structure 1183 . It may contribute to support or clamping force. For example, when the electronic device 2 is switched from an unfolded state (see FIG. 14 ) to a fully folded state (see FIG. 20 ), the ninth joint 79 including the surface of the first gear structure 1191 is The fourth face 884 of the eighth joint 78, including the third face 893 and the surface of the third gear structure 1183, may be disposed facing each other in a fit that can no longer be brought closer ( Example: Full fit condition). The third surface 893 and the fourth surface 884 may form a first angle A1 with respect to the bending center point P in the unfolded state of the electronic device 2 . For example, the top of tooth (not shown) of the first tooth 1191a included in the first gear structure 1191 and the groove end of the third tooth groove 1183b included in the third gear structure 1183 (not shown) may form a first angle A1 with respect to the bending center point P in the unfolded state of the electronic device 2 . According to one embodiment, the eighth joint 78 may include a support end 885 positioned corresponding to the third circle C3 with respect to the bending center point P. The third circle C3 may have a larger diameter than the second circle C2 . The support end 885 may be positioned closer to the second face 882 than the first face 881 (see FIG. 13 ). Gear structures included in the eighth joint 78 may be located closer to the first surface 881 (see FIG. 13 ) than to the second surface 882 . The support end 885 may be located closer to the second face 882 than the gear structures included in the eighth joint 78 . The support end 885 of the eighth joint 78 may have a cross-sectional shape that is narrowed in a direction from the first face 881 (see FIG. 13 ) to the second face 882 of the eighth joint 78 . . The ninth joint 79 may include a support end 895 positioned to correspond to the third circle C3 with respect to the bending center point P. The support end 895 of the ninth joint 79 may be formed substantially the same as the support end 885 of the eighth joint 78 . For example, the support end 895 of the ninth joint 79 has a cross-sectional shape that narrows in a direction from the first face 891 (see FIG. 13 ) to the second face 892 of the ninth joint 79 . may have, and may be located closer to the second surface 892 than the gear structures included in the ninth joint 79 . The support end 885 of the eighth joint 78 may include an inclined surface 886 included in the fourth surface 884 , corresponding to the support end 895 of the ninth joint 79 . The support end 895 of the ninth joint 79 may include an inclined surface 896 included in the third surface 893 corresponding to the support end 885 of the eighth joint 78 . The inclined surface 886 of the eighth joint 78 may, for example, form an acute angle with the first surface 881 (see FIG. 13 ) of the eighth joint 78 . The inclined surface 896 of the ninth joint 79 may, for example, form an acute angle with the first surface 891 (see FIG. 13 ) of the ninth joint 79 . The inclined surface 886 included in the support end 885 of the eighth joint 78 and the inclined surface 896 included in the support end 895 of the ninth joint 79 are in the unfolded state of the electronic device 2 . , a first angle A1 may be formed with respect to the bending center point P. According to one embodiment, the inclined surface 886 of the eighth joint 78 and the groove end of the third tooth groove 1183b may have a first angle ( A second angle A2 greater than A1) may be formed. In the unfolded state of the electronic device 2, the first tooth 1191a of the first gear structure 1191 is extended to be partially inserted into the third tooth groove 1183b of the third gear structure 1183, thereby, The second angle A2 may be formed to be larger than the first angle A1 . In the unfolded state of the electronic device 2, the groove end of the inclined surface 886 of the eighth joint 78 and the third tooth groove 1183b is a second angle greater than the first angle A1 with respect to the bending center point P. When A2) is achieved, the supporting force or fastening force between the first gear structure 1191 and the third gear structure 1183 may be secured. The other two adjacent joints, the first joint 71 and the first support plate 510 adjacent to each other, and the ninth joint 79 and the second support plate 520 adjacent to each other are the eighth joint 78 ) and the ninth joint 79 and substantially the same gear structures, and the same mutual operation based thereon is possible. In the illustrated embodiment, nine joints may be included between the first support plate 510 and the second support plate 520 , so that the first angle A1 may be about 18 degrees. The second angle A2 greater than the first angle A1 may be, for example, about 25.6 degrees. The folding area 33 of the flexible display 30 is supported by the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 to support the first area 31 of the flexible display 30 . ) and the second region 32 may be smoothly disposed.

When the electronic device 2 is switched from an unfolded state (see FIG. 13 or 14 ) to a folded state (see FIGS. 15, 16, 17, 18, 19, or 20 ), in the folding area 33 of the flexible display 30 , Stress may occur. Stress may decrease or lose elasticity of the folding region 33 , and due to this, even when the electronic device 2 is converted from a folded state to an unfolded state, the folding region 33 is not restored to its original state but returns to an extended form. can be deformed. When the transition between the folded state and the unfolded state is repeated, there may be deformation of the folding region 33 due to a decrease or loss of elasticity due to fatigue accumulation. According to one embodiment, a plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , a first support plate 510 and a first joint 71 , and a second support plate Since the 520 and the ninth joint 79 are meshed with each other by gear structures, the supporting force or fastening force between each other affects the folding area 33 in which elasticity is reduced or lost, thereby reducing the wrinkle phenomenon of the folding area 33 . can The wrinkle phenomenon is, for example, a phenomenon in which the folding region 33 with reduced or lost elasticity is raised or unevenly protruded with respect to the first region 31 and the second region 32 in the unfolded state of the electronic device 2 . can point to First faces 811 , 821 , 831 , 841 , 851 , 861 , 871 , 881 , 891 of the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 (see FIG. 13 ) ) is coupled to a plurality of regions of the folding region 33 , and a supporting force or fastening force between the gear structures may affect the plurality of regions of the folding region 33 . Due to this, the wrinkle phenomenon of the folding area 33 in the unfolded state of the electronic device 2 can be reduced, or even if there is a wrinkle phenomenon, it is difficult to visually or tactilely recognize the user and/or the quality can be improved. can In various embodiments, the folding support structure 530 is not limited to the illustrated embodiment and is implemented in a larger number while reducing the size of the joint, so that the wrinkle phenomenon of the folding area 33 can be more precisely reduced. In various embodiments, the folding support structure 530 may be implemented so that a portion of the folding area 33 to which the plurality of joints are not coupled is substantially eliminated or minimized. In various embodiments, a gear structure included in a plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , a first support plate 510 , and a second support plate 520 . The gears are not limited to the gear structures shown in FIG. 11 or 12 and may be implemented in various other forms. In various embodiments, the folding support structure 530 may be referred to by various other terms, such as a 'multi-segment support connection structure'.

According to an embodiment, some of the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , and 79 may be coupled to the hinge assembly 230 . For example, when viewed from above (eg, in the -z axis direction) of the flexible display 30 in the unfolded state of the electronic device 2 , the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 . , 77 , 78 , and 79 , the fifth joint 75 located in the middle may overlap the folding axis C (eg, refer to FIGS. 2 , 3 , or 4 ). The fifth joint 75 may be coupled to the hinge assembly 230 forming the folding axis C. A plurality of supports 752 (see FIGS. 4, 5, 6, 7, 8, 9, or 10) included in the fifth joint 75 is, for example, a hinge assembly ( It may be coupled to the hinge shaft 2110 included in the 230 . The plurality of support parts 752 may be inserted into recesses (not shown) included in the hinge shaft 2110 . A portion of the folding area 33 of the flexible display 30 coupled to the fifth joint 75 may be coupled to the hinge shaft 2110 through the fifth joint 75 . In the unfolded state of the electronic device 2 due to the decrease or loss of elasticity of the folding area 33 , the portion where the wrinkle phenomenon may occur is substantially the first support plate 510 and the fifth joint ( 510 ) of the folding area 33 . 75 ), and/or a second portion 1402 corresponding to between the second support plate 520 and the fifth joint 75 of the folding area 33 . a plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , a first support plate 510 and a first joint 71 , and a second support plate 520 and a ninth joint Since the joint 79 is meshed with each other with gear structures, the support or fastening force between each other affects the first portion 1401 and the second portion 1402 so that the first portion 1401 and the second portion 1402 . can reduce wrinkles.

A first display support assembly 500 including a plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 is coupled to a rear surface of the flexible display 30 , according to an embodiment. The layer structure may reduce folding stress compared to, for example, a second layer structure in which an integral flexible support member is coupled to the rear surface of the flexible display 30 instead of the display support assembly 500 . When the first layer structure and the second layer structure are folded with the same curvature (or radius of curvature) in the folding area 33 of the flexible display 30 , the folding stress generated in the second layer structure is greater than that in the first layer structure. can When the second layer structure is folded, an increasing force (eg, tensile stress) is applied to the front surface of the folding region 33 , and a decreasing force (eg, compressive stress) is applied to the rear surface of the flexible support member. may occur, and the impact (eg, folding stress) on the folding region 33 while the opposing forces collide may cause breakage of the folding region 33. A plurality of joints 71, 72, 73, 74 , 75 , 76 , 77 , 78 , and 79 including the display support assembly 500 has a bending characteristic corresponding to the folding area 33 of the flexible display 30 , and the effect of stress on the folding area 33 . Folding stress may be reduced by reducing the thickness of the flexible support member included in the second layer structure, but it may be difficult to secure support for the flexible display 30 .

The cross-sectional structure of the line E-E' shown in FIG. 14 may include, for example, the flexible display 30 , the front cover 201 , and/or the optically transparent adhesive member 145 . The flexible display 30 may be coupled to the front cover 201 using an optically transparent adhesive member 145 (eg, optical clear adhesive (OCA), optical clear resin (OCR), or super view resin (SVR)). can The front cover 201 (eg, a window) may cover the flexible display 30 to protect the flexible display 30 from the outside. The front cover 201 may be in the form of a thin film having flexibility (eg, a polyimide film or thin glass (eg, ultra thin glass), or a form in which various coating layers are disposed on a plastic film or thin glass). The flexible display 30 may include a display panel 141 , a base film 142 , a lower panel 143 , or an optical layer 144 . According to various embodiments, the front cover 201 and the optically transparent adhesive member 145 are components included in the flexible display 30 and may be integrally implemented with the flexible display 30 . The display panel 141 may be positioned between the optical layer 144 and the base film 142 . The base film 142 may be positioned between the display panel 141 and the lower panel 143 . The optical layer 144 may be positioned between the optically transparent adhesive member 145 and the display panel 141 . An adhesive member of various polymers between the display panel 141 and the base film 142 , between the base film 142 and the lower panel 143 , and/or between the display panel 141 and the optical layer 46 . (not shown) may be disposed. The display panel 141 may include an emission layer 141a and a thin film transistor (TFT) film 141b. The light emitting layer 141a may include, for example, a plurality of pixels implemented as light emitting devices such as OLEDs or micro LEDs. The emission layer 141a may be disposed on the TFT film 141b through organic material evaporation. The TFT film 141b may be positioned between the light emitting layer 141a and the base film 142 . The TFT film 141b may refer to a structure in which at least one TFT is disposed on a flexible substrate (eg, a PI film) through a series of processes such as deposition, patterning, and etching. The at least one TFT may control the current to the light emitting device of the light emitting layer 141a to turn on or off the pixel or adjust the brightness of the pixel. The at least one TFT may be implemented as, for example, an amorphous silicon (a-Si) TFT, a liquid crystalline polymer (LCP) TFT, a low-temperature polycrystalline oxide (LTPO) TFT, or a low-temperature polycrystalline silicon (LTPS) TFT. can The display panel 141 may include a storage capacitor, and the storage capacitor maintains a voltage signal to the pixel, maintains the voltage applied to the pixel within one frame, or changes the gate voltage of the TFT due to leakage during the light emission time can reduce By a routine (eg, initialization, data write) controlling at least one TFT, the storage capacitor may maintain the voltage applied to the pixel at a predetermined time interval. According to an embodiment, the display panel 141 may be implemented based on OLED, and includes an encapsulation (eg, thin-film encapsulation (TFE)) 141c covering the light emitting layer 141a. can do. Organic materials and electrodes that emit light in OLEDs are very sensitive to oxygen and/or moisture and may lose their luminescent properties. The encapsulation layer 141c may seal the light emitting layer 141a so that oxygen and/or moisture do not penetrate into the OLED. The encapsulation layer 141c may serve as a pixel protection layer for protecting the plurality of pixels of the emission layer 141a. The base film 142 may include a flexible film formed of a material such as polyimide or polyester (PET). The base film 142 may serve to support and protect the display panel 141 . According to some embodiments, the base film 142 may be referred to by various terms such as a protective film, a back film, or a back plate. The lower panel 143 may include a plurality of layers for various functions. An adhesive member (not shown) of various polymers may be disposed between the plurality of layers included in the lower panel 143 . According to an embodiment, the lower panel 143 may include a light blocking layer 143a, a buffer layer 143b, or a lower layer 143c. The light blocking layer 143a may be positioned between the base film 142 and the buffer layer 143b. The buffer layer 143b may be positioned between the light blocking layer 143a and the lower layer 143c. The light blocking layer 143a may block at least a portion of light incident from the outside. For example, the light blocking layer 143a may include an emboss layer. The embossed layer may be a black layer comprising an uneven pattern. The buffer layer 143b may alleviate an external shock applied to the flexible display 30 . For example, the buffer layer 143b may include a sponge layer or a cushion layer. The lower layer 143c may diffuse, disperse, or dissipate heat generated in the electronic device 2 or the flexible display 30 . The lower layer 143c may absorb or shield electromagnetic waves. The lower layer 143c may mitigate an external shock applied to the electronic device 2 or the flexible display 30 . For example, the lower layer 143c may include a composite sheet 143d or a copper sheet 143e. The composite sheet 143d may be a sheet processed by combining layers or sheets having different properties. For example, the composite sheet 143d may include at least one of polyimide and graphite. The composite sheet 143d may be replaced with a single sheet including one material (eg, polyimide, or graphite). A composite sheet 143d may be positioned between the buffer layer 143b and the copper sheet 143e. The copper sheet 143e may be replaced with various other metal sheets. According to various embodiments, at least a portion of the lower layer 143c is a conductive member (eg, a metal plate), which may help to reinforce rigidity of the electronic device 2 , shield ambient noise, and dissipate ambient heat. It can be used to dissipate heat emitted from components (eg display driving circuits (eg DDI)). The conductive member is, for example, at least one of copper (Cu (copper)), aluminum (Al (aluminum)), SUS (stainless steel), or CLAD (eg, a stacked member in which SUS and Al are alternately disposed) may include The lower layer 143c may include various layers for various other functions. The optical layer 144 may include, for example, a polarizing layer (or polarizer), or a retardation layer (or retarder). The polarization layer and the phase delay layer can improve the outdoor visibility of the screen. The optical layer 144 may selectively pass light that is generated from a light source of the display panel 141 and vibrates in a predetermined direction, for example. According to various embodiments, a single layer in which the polarization layer and the retardation layer are combined may be provided, and this layer may be defined as a 'circularly polarization layer'. According to various embodiments, the polarization layer (or the circular polarization layer) may be omitted, and in this case, a black pixel define layer (PDL) and/or a color filter may be provided to replace the polarization layer. According to various embodiments (not shown), at least one additional polymer layer (eg, a layer including PI, PET, or TPU) other than the base film 142 may be further disposed on the rear surface of the display panel 141 . According to various embodiments, at least one of the plurality of layers included in the lower panel 143 (eg, the light blocking layer 143a, the buffer layer 143b, the composite sheet 143d, and the copper sheet 143e) is omitted. it might be According to various embodiments, the arrangement order of the plurality of layers included in the lower panel 143 is not limited to the embodiment of FIG. 14 and may be variously changed. According to an embodiment (not shown), the flexible display 30 may include a touch sensing circuit (eg, a touch sensor). The touch sensing circuit may be implemented as a transparent conductive layer (or film) based on various conductive materials such as indium tin oxide (ITO). According to an embodiment, the touch sensing circuit may be disposed between the front cover 201 and the optical layer 144 (eg, an add-on type). According to another embodiment, the touch sensing circuit may be disposed between the optical layer 144 and the display panel 141 (eg, on-cell type). According to another embodiment, the display panel 141 may include a touch sensing circuit or a touch sensing function (eg, in-cell type). According to various embodiments, the display panel 141 may be based on an OLED, and may include an encapsulation layer 141c disposed between the light emitting layer 141a and the optical layer 144 . According to various embodiments, the flexible display 30 is a metal mesh (eg, aluminum metal mesh) as a touch sensing circuit disposed in the encapsulation layer 141c between the encapsulation layer 141c and the optical layer 144 . It may include a conductive pattern such as According to various embodiments (not shown), the flexible display 130 may further include a pressure sensor capable of measuring the intensity (pressure) of the touch. According to various embodiments, a plurality of layers included in the display panel 141 or the lower panel 143, a stacking structure thereof, or a stacking order may vary. According to various embodiments, the flexible display 30 may be implemented by omitting some of the components or adding other components according to its provision form or convergence trend. According to an embodiment, the bending center line C4 is switched from an unfolded state (FIG. 13 or 14) to a folded state (refer to FIGS. 15, 16, 17, 18, 19, or 20) of the electronic device 2 or When maintained in the folded state, it may correspond to a position where damage to the folding area 33 can be reduced by minimizing the stress effect on the folding area 33 of the flexible display 30 . For example, the bending center line C4 may be located at an interface between any one of a plurality of layers or any two layers included in the cross-sectional structure for the E-E′ line, for example. The bending center line C4 may be selected in consideration of the thickness and/or medium characteristics of the plurality of layers included in the cross-sectional structure of the line E-E'. The folding support structure 530 may be designed in consideration of the location of the bending center line C4 in the flexible display 30 . The shape and/or number of joints may be designed in consideration of the bending center line C4. In various embodiments, in order to reduce the folding stress applied to the folding area 33 of the flexible display 30 , the stacked structure included in the flexible display 30 may be designed to buffer stress during bending.

According to an embodiment, in a fully folded state (see FIG. 20 ) of the electronic device 2 , the second surfaces 812 of the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 . , 822 , 832 , 842 , 852 , 862 , 872 , 882 , 892 (see FIGS. 13 and 14 ) are curved regions S1 , S2 , S3 , S4 of the curved part 2111 included in the hinge assembly 230 . , S5, S6, S7, S8, S9) may be disposed to face each other. In the fully folded state of the electronic device 2 , the first support plate 510 and the second support plate 520 may be substantially parallel. The curved portion 2111 may include a curved surface having a corresponding radius from the center point of the curved surface. According to one embodiment, second faces 812, 822, 832, 842, 852, 862, 872, 882, 892 may be formed as a curved surface corresponding to the curved areas S1 , S2 , S3 , S4 , S5 , S6 , S7 , S8 , and S9 . The curved portion 2111 may be at least partially formed by, for example, the hinge shaft 2110 included in the hinge assembly 230 .

According to various embodiments, the first support plate 510 , the second support plate 520 , and the folding support structure 530 do not substantially deform in response to a force acting in a state change of the electronic device 2 . It may be formed of a material having a rigid or load-bearing strength (eg, a metal or engineering plastic).

According to various embodiments, in order to reduce the loss of motion transmission or loss of force transmission, between two adjacent joints, between the first joint 71 and the first support plate 510, and/or the ninth joint ( 79) and a lubricant (eg, grease) may be interposed between the second support plate 520 . A lubricant may be interposed in a friction part between the two elements moving while rubbing against each other to contribute to smooth movement and durability. According to some embodiments, the two elements moving while rubbing each other may be coated with a lubricant to reduce frictional force.

21 is an exploded view of the hinge assembly 230 of FIG. 4 according to an embodiment.

4 and 21 , the hinge assembly 230 includes a hinge shaft 2110 , a first hinge plate 2121 , a second hinge plate 2122 , a third hinge plate 2123 , and a fourth hinge plate 2124 . ), a first conical gear 2131 , and/or a second conical gear 2132 . The hinge assembly 230 may include a first sliding support plate 2141 , a second sliding support plate 2142 , a third sliding support plate 2143 , and/or a fourth sliding support plate 2144 . The hinge assembly 230 includes a first elastic member 2151 , a second elastic member 2152 , a third elastic member 2153 , a fourth elastic member 2154 , a fifth elastic member 2155 , and a sixth elastic member 2156 , a seventh elastic member 2157 , and/or an eighth elastic member 2158 . Hinge assembly 230 can include a first tension member 2161 , a second tension member 2162 , a third tension member 2163 , and/or a fourth tension member 2164 . The hinge assembly 230 may include a third support plate 2181 and a fourth support plate 2182 .

According to an embodiment, the first hinge plate 2121 and the second hinge plate 2122 may be rotatably connected to each other. The third hinge plate 2123 and the fourth hinge plate 2124 may be rotatably connected to each other. The first hinge plate 2121 and the third hinge plate 2123 are positioned inside the electronic device 2 corresponding to the first support member 411, and the second hinge plate 2122 and the fourth hinge plate ( 2124 may be located inside the electronic device 2 corresponding to the second support member 412 . The first hinge part 2210 to which the first hinge plate 2121 and the second hinge plate 2122 are connected, and the second hinge part 2220 to which the third hinge plate 2123 and the fourth hinge plate 2124 are connected. may form the folding axis C of the electronic device 2 .

According to an embodiment, the first sliding support plate 2141 and the third sliding support plate 2143 may be coupled to the first support member 411 . The first sliding support plate 2141 and the third sliding support plate 2143 are, for example, between the first support member 411 and the first back cover 211 using a bolt to connect the first support member 411 ) can be combined with The second sliding support plate 2142 and the fourth sliding support plate 2144 may be coupled to the second support member 412 . The second sliding support plate 2142 and the fourth sliding support plate 2144 are, for example, between the second support member 412 and the second rear cover 212 using a bolt to connect the second support member 412 ) can be combined with The first sliding support plate 2141 and the second sliding support plate 2142 may be symmetrically disposed with respect to the folding axis C. The third sliding support plate 2143 and the fourth sliding support plate 2144 may be symmetrically disposed with respect to the folding axis C.

According to an embodiment, the first hinge plate 2121 may extend between the first support member 411 and the first sliding support plate 2141 . The second hinge plate 2122 may extend between the second support member 412 and the second sliding support plate 2142 . The third hinge plate 2123 may extend between the first support member 411 and the third sliding support plate 2143 . The fourth hinge plate 2124 may extend between the second support member 412 and the fourth sliding support plate 2144 . In the transition between the unfolded state and the folded state of the electronic device 2 , due to the difference in the radius of curvature (or curvature), the first hinge plate 2121 , the second hinge plate 2122 , and the third hinge plate 2123 ) , and the fourth hinge plate 2124 may be slid with respect to the display support assembly 500 and the flexible display 30 coupled thereto. The first sliding support plate 2141 may include a first guide rail 2141a provided to correspond to the sliding of the first hinge plate 2121 . The first hinge plate 2121 may be slid while being guided by the first guide rail 2141a. The second sliding support plate 2142 may include a second guide rail 2142a provided to correspond to the sliding of the second hinge plate 2122 . The third sliding support plate 2143 may include a third guide rail 2143a provided to correspond to the sliding of the third hinge plate 2123 . The fourth sliding support plate 2144 may include a fourth guide rail 2144a provided to correspond to the sliding of the fourth hinge plate 2124 .

According to one embodiment, the first elastic member 2151 is disposed on the first sliding support plate 2141, the side surface of the first hinge plate 2121 (eg, a surface facing in a direction perpendicular to the sliding direction) elastically can be pressurized. The first elastic member 2151 is disposed in the groove 2141b formed in the first sliding support plate 2141, and the side surface of the first hinge plate 2121 through the groove 2141b and the first guide rail 2141a. can be pressurized. The first hinge plate 2121 may include, for example, a first recess 2121a and a second recess 2121b provided on a side surface corresponding to the first elastic member 2151 . The first elastic member 2151 may be a spring in the form of a line as shown, but is not limited thereto and may be implemented in various other forms. When the electronic device 2 is switched from the folded state to the unfolded state, the first elastic member 2151 is inserted into the first recess 2121a due to the slid position of the first hinge plate 2121 and the first hinge plate (2121) can be pressurized. A state in which the first elastic member 2151 is inserted into the first recess 2121a to press the first hinge plate 2121 may contribute to maintaining the unfolded state. When the electronic device 2 is converted from an unfolded state to a fully folded state, the first elastic member 2151 is inserted into the second recess 2121b due to the slid position of the first hinge plate 2121 to the first hinge The plate 2121 may be pressed. A state in which the first elastic member 2151 is inserted into the second recess 2121b to press the first hinge plate 2121 may contribute to maintaining the fully folded state. The second elastic member 2152 may be positioned on the first sliding support plate 2141 on the opposite side of the first elastic member 2151 to press the other side of the first hinge plate 2121 . A structure including the first elastic member 2151 and the corresponding first recesses 2121a and 2121b may be substantially the same for the second elastic member 2152 . The structure including the first elastic member 2151 and the corresponding first recesses 2121a and 2121b corresponds to the second hinge plate 2122 and the second sliding support plate 2142 . The third elastic member 2153 and the fourth elastic member 2154 may also be applied in substantially the same manner. The structure including the first elastic member 2151 and the corresponding first recesses 2121a and 2121b corresponds to the third hinge plate 2123 and the third sliding support plate 2143 . The fifth elastic member 2155 and the sixth elastic member 2156 may be applied in substantially the same manner. The structure including the first elastic member 2151 and the corresponding first recesses 2121a and 2121b corresponds to the fourth hinge plate 2124 and the fourth sliding support plate 2144 . The seventh elastic member 2157 and the eighth elastic member 2158 may be applied in substantially the same manner.

22 shows a first hinge plate 2121 , a second hinge plate 2122 , and a first conical gear 2131 according to an embodiment.

21 and 22 , the first hinge plate 2121 may include a first hinge arm 2201 and a third hinge arm 2203 positioned on the first hinge part 2210 . . The second hinge plate 2122 may include a second hinge arm 2202 and a fourth hinge arm 2204 positioned on the first hinge part 2210 . The first hinge arm 2201 , the second hinge arm 2202 , the third hinge arm 2203 , and the fourth hinge arm 2204 may be arranged in the direction of the folding axis C of the hinge assembly 230 . there is. The first hinge arm 2201 of the first hinge plate 2121 may be positioned between the second hinge arm 2202 and the fourth hinge arm 2204 of the second hinge plate 2122 . The second hinge arm 2202 of the second hinge plate 2122 may be positioned between the first hinge arm 2201 and the third hinge arm 2203 of the first hinge plate 2121 . In some embodiments, the third hinge arm 2203 and the fourth hinge arm 2204 may be omitted. The first hinge arm 2201 may include a first gear 2201a meshed corresponding to the first conical gear 2131 . The second hinge arm 2202 may include a second gear 2202a meshed corresponding to the first conical gear 2131 . The first conical gear 2131 may be disposed between the first gear 2201a and the second gear 2202a in meshing with the first gear 2201a and the second gear 2202a. The first gear 2201a and the second gear 2202a are rotatable based on the folding shaft C, and the first conical gear 2131 has a first rotational shaft C5 orthogonal to the folding shaft C. It may be rotatable with respect to the base. When the electronic device 2 is switched between the unfolded state and the collapsed state, the first gear 2201a of the first hinge plate 2121 and the second gear 2202a of the second hinge plate 2122 engage the folding shaft ( The first conical gear 2131 that is rotated in opposite directions based on C) and meshed with the first gear 2201a and the second gear 2202a may be rotated based on the first rotation axis C5. . The second hinge part 2220 connecting the third hinge plate 2123 and the fourth hinge plate 2124 may be implemented in substantially the same manner as the first hinge part 2210 . The second hinge part 2220 is, for example, a second conical gear 2132 that is rotatable based on a second rotation axis C6 that is parallel to the first rotation axis C5 and orthogonal to the folding axis C. , The second conical gear 2132 and meshed with and rotatably based on the folding axis (C), the hinge arm of the third plate 2123 and the hinge arm of the fourth plate 2124 It can include gears respectively positioned there is. The hinge shaft 2110 may be coupled to the first hinge part 2210 , and elements included in the first hinge part 2210 may be maintained in a drivingly connected state by the hinge shaft 2210 . The hinge shaft 2110 may be coupled to the second hinge part 2220 , and elements included in the second hinge part 2220 may be maintained in a drivingly connected state by the hinge shaft 2210 . For example, the hinge shaft 2110 may be connected to the first hinge part 2210 and the second hinge part 2220 to contribute to the formation of the first rotation shaft C5 and the second rotation shaft C6 . The hinge shaft 2110 may include a first shaft inserted into the shaft hole 2131a of the first conical gear 2131 , and the first conical gear 2131 is a first shaft forming a first rotation axis C5 . 1 may be rotatable about a shaft. The hinge shaft 2110 may include a second shaft inserted into the shaft hole 2132a of the second conical gear 2132 , and the second conical gear 2132 is a second shaft forming a second rotation axis C6 . 2 may be rotatable about a shaft.

According to an embodiment, when viewed from above (eg, in the -z axis direction) of the flexible display 30 in the unfolded state of the electronic device 2 , the fifth joint 75 is parallel to the folding axis C and can be nested. When viewed from above the flexible display 30 in the unfolded state of the electronic device 2 , the fifth joint 75 may be positioned to correspond to the first rotation axis C5 and the sixth rotation axis C6 . The first surface 851 (refer to FIG. 13 ) of the fifth joint 75 faces the folding area 33 of the flexible display 30 in the directions of the first rotation axis C5 and the second rotation axis C6 . can be directed to When the electronic device 2 is switched from the unfolded state to the folded state, the folding support structure 530 and the folding area 33 of the flexible display 30 coupled thereto are connected to the fifth joint ( 75) can be bent.

According to an embodiment, the first hinge plate 2121 and the second hinge plate 2122 of the hinge assembly 230 rotate in opposite directions with respect to the folding axis C in the state change of the electronic device 2 . and, due to the first hinge part 2210 , it is possible to achieve substantially the same angle with respect to the first rotation axis C5 of the first conical gear 2131 . The third hinge plate 2123 and the fourth hinge plate 2124 of the hinge assembly 230 are rotated in opposite directions with respect to the folding axis C in the state change of the electronic device 2 , and the second hinge part 2220 allows for substantially the same angle with respect to the second axis of rotation C6 of the second conical gear 2132 . The first support plate 510 and the second support plate 520 of the display support assembly 500 and the corresponding first area 31 and the second area 32 of the flexible display 30 are formed by a hinge assembly. Due to (230), the same angle can be achieved with respect to the first axis of rotation C5 (or the second axis of rotation C6). The first hinge portion 2210 and the second hinge portion 2220 of the hinge assembly 230 are in a state in which the display support assembly 500 coupled with the flexible display 30 is engaged between the gear structures, according to an embodiment. It can contribute to be bendable based on the fifth joint 75 fixed to the hinge shaft 2110 without releasing the .

23 illustrates a partial cross-sectional structure 2300 of an unfolded state of the electronic device 2 according to an exemplary embodiment. 24 shows a partial cross-sectional structure 2400 of the fully folded state of the electronic device 2 according to an embodiment.

The cross-sectional structure 2300 of FIG. 23 or the cross-sectional structure 2400 of FIG. 24 includes, for example, a first hinge plate 2121 and a second hinge plate 2122 connected by a first hinge part 2210. may be part of Although not shown, substantially the same cross-sectional structure may be formed with respect to a portion including the third hinge plate 2123 and the fourth hinge plate 2124 connected by the second hinge part 2220 . 4 , 21 , 23 , and 24 , the third support plate 2181 may be coupled to the first hinge plate 2121 and the third hinge plate 2123 . The fourth support plate 2182 may be coupled to the second hinge plate 2122 and the fourth hinge plate 2124 . In a state change of the electronic device 2 , the third support plate 2181 is moved together with the first hinge plate 2121 and the third hinge plate 2123 , and the fourth support plate 2182 is the second hinge plate (2122) and the fourth hinge plate (2124) can be moved together.

According to an embodiment, in the unfolded state (refer to FIG. 23 ) of the electronic device 2 , the third support plate 2181 and the fourth support plate 2182 may be positioned to face the folding support structure 530 . . The third support plate 2181 and the fourth support plate 2182 are formed in a space 413 between the first support member 411 and the second support member 412 of FIG. 4 in the unfolded state of the electronic device 2 . ) through the folding support structure 530 can be supported. The third support plate 2181 includes the first, second, third, and fourth joints 71 and 72 between the first support plate 510 and the fifth joint 75 in the unfolded state of the electronic device 2 . , 73, 74) can be supported. The fourth support plate 2182 includes the sixth, seventh, eighth, and ninth joints 76 and 77 between the second support plate 520 and the fifth joint 75 in the unfolded state of the electronic device 2 . , 78, 79) can be supported. In response to the external force applied to the folding area 33 of the flexible display 30 , the third support plate 2181 is formed by connecting the first, second, third, and fourth joints 71 , 72 , 73 and 74 to the fifth It may contribute not to be separated between the joint 75 and the first support plate 510 . In response to an external force applied to the folding area 33 of the flexible display 30 , the fourth support plate 2182 includes the sixth, seventh, eighth, and ninth joints 76 , 77 , 78 , and 79 to form a fifth It may contribute not to be separated between the joint 75 and the second support plate 520 .

According to an embodiment, in the fully folded state of the electronic device 2 (refer to FIG. 24 ), the third support plate 2181 and the fourth support plate 2182 are the first area 31 of the flexible display 30 . and the second region 32 . Second faces 812 , 822 , 832 , 842 , 852 , 862 , 872 , 882 , 892 of the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 (see FIG. 13 ). ) may be disposed to face the curved portion 2111 of the hinge shaft 2110 .

According to some embodiments, the third support plate 2181 may be integrally formed with the first hinge plate 2121 and/or the third hinge plate 2123 to include the same material. The fourth support plate 2182 may be integrally formed with the second hinge plate 2122 and/or the fourth hinge plate 2124 and include the same material.

25 illustrates a cross-sectional structure 2500 of a portion of the electronic device 2 in an unfolded state according to an embodiment. 26 illustrates a plan view 2600 of a portion of the electronic device 2 in an unfolded state according to an embodiment.

25 and 26 , in an embodiment, the electronic device 2 includes a flexible display 30 , a second support plate 520 , a folding support structure 530 , a second support member 412 , and a first It may include a hinge plate 2121 , a second hinge plate 2122 , a third support plate 2181 , a fourth support plate 2182 , and/or a second tension member 2162 .

4 , 21 , 25 , and 26 , the second tension member 2162 may be positioned in an opening 2122c formed in the second hinge plate 2122 . One end 2162a of the second tension member 2162 may be coupled to the second hinge plate 2122 using a fastening means such as a bolt. The other end 2162b of the second tension member 2162 may be coupled to the second support member 412 using a fastening means such as a bolt. The second tension member 2162 may provide a tension force between the second hinge plate 2122 and the second support member 412 . The second tension member 2162 can provide a force T to move the second support member 412 away from the folding axis C for the second hinge plate 2122 supported on the hinge shaft 2110. there is. For example, a force T in a direction perpendicular to the folding axis C and the first rotation axis C5 and away from the folding axis C may act on the second support member 421 . The second tension member 2162 may include various elastic members capable of resiliently providing a force, such as a tension spring. Since the second support member 421 is coupled to the second support plate 520 of the display support assembly 500 , and the display support assembly 500 is coupled to the flexible display 30 , the force T is flexible. may be applied to the display 30 . The force T is a second portion corresponding to the folding area 33 of the flexible display 30 (eg, in FIG. 14 , between the second support plate 520 and the fifth joint 75 of the folding area 33 ). (1402)) can contribute to reducing the wrinkle phenomenon. According to some embodiments, the end 2162b of the second tension member 2162 may be coupled to the second support plate 520 of the display support assembly 500 .

The fourth tension member 2164 may, for example, provide a tensile force between the fourth hinge plate 2124 and the second support member 412 in substantially the same manner as the second tension member 2162 . The force acting on the second support member 412 due to the fourth tension member 2164 is applied to the folding area 33 (eg, in FIG. 14 , the second support plate 520 and the fifth joint of the folding area 33 in FIG. 14 ). It may contribute to reducing the wrinkling phenomenon of the second portion 1402 corresponding to the space between the 75 .

The first tension member 2161 may, for example, provide a tension force between the first hinge plate 2121 and the first support member 411 in substantially the same manner as the second tension member 2162 . The force acting on the first support member 411 due to the first tension member 2161 is the folding area 33 (eg, in FIG. 14 , the first support plate 510 and the fifth joint of the folding area 33 in FIG. 14 ). It can contribute to reducing the wrinkle phenomenon of the first part 1401 corresponding to the space between 75 and 1401).

The third tension member 2163 may, for example, provide a tension force between the third hinge plate 2123 and the first support member 411 in substantially the same manner as the second tension member 2162 . The force acting on the first support member 411 due to the third tension member 2163 is applied to the first support plate 510 and the fifth joint of the folding area 33 (eg, in FIG. 14 , in the folding area 33 ). It can contribute to reducing the wrinkle phenomenon of the first part 1401 corresponding to the space between 75 and 1401).

Referring to FIG. 23 , for example, when viewed from the top of the flexible display 30 in the unfolded state of the electronic device 2 , the first material point P1 and the second hinge included in the second support plate 520 . The second material points P2 included in the plate 2122 may be aligned. When the unfolded state of FIG. 23 is switched to the folded state of FIG. 24 , when viewed from above of the second area 32 of the flexible display 30 , the first material point P1 and the second material point P2 due to the difference in the radius of curvature ) may not be aligned. This phenomenon may also occur in the first support plate 510 and the first hinge plate 2121 . 23, 24, 25, and 26, using tension members, the second support member 412 is moved from the folding axis C with respect to the second hinge plate 2122 and the fourth hinge plate 2124. The force to move away and the force to move the first support member 411 away from the folding axis C with respect to the first hinge plate 2121 and the third hinge plate 2123 may reduce the above phenomenon.

According to various embodiments (not shown), the second support member 412 is moved away from the folding axis C with respect to the second hinge plate 2122 and the fourth hinge plate 2124 supported on the hinge shaft 2110 . The force to be loaded may be provided by a variety of other resilient members, such as compression springs. Depending on the shape of the elastic member, the elastic member may be located at various positions between the second hinge plate 2122 and the second support member 412 , and/or between the fourth hinge plate 2124 and the second support member 412 . can be placed.

According to various embodiments (not shown), the first support member 411 is moved away from the folding axis C with respect to the first hinge plate 2121 and the third hinge plate 2123 supported on the hinge shaft 2110 . The force to be loaded may be provided by a variety of other resilient members, such as compression springs. Depending on the shape of the elastic member, the elastic member may be located at various positions between the first hinge plate 2121 and the first support member 411 and/or between the third hinge plate 2123 and the first support member 411 . can be placed.

According to an embodiment of the present invention, the electronic device (eg, the electronic device 2 of FIG. 2 ) may include a housing (eg, the foldable housing 20 of FIG. 2 ). The foldable housing may include a first surface of the electronic device (eg, the first surface 20A of FIG. 2 ), and a second surface of the electronic device (eg, FIG. 2 ) facing in a direction opposite to the first surface. of the second surface 20B). The housing may be foldable from the first surface with respect to a folding axis (eg, the folding axis C of FIG. 2 ). The electronic device may include a flexible display (eg, the flexible display 30 of FIG. 2 ) positioned in the housing. The flexible display may be visually exposed through the first surface. The flexible display includes a first area (eg, the first area 31 of FIG. 3 ), a second area (eg, the second area 32 of FIG. 3 ), and between the first area and the second area. may include a folding area (eg, the folding area 33 of FIG. 3 ). The electronic device may include a display support assembly (eg, the display support assembly 500 of FIG. 4 ) disposed on a rear surface of the flexible display. The display support assembly may include a first support plate (eg, the first support plate 510 of FIG. 4 ) corresponding to the first area. The display support assembly may include a second support plate (eg, the second support plate 520 of FIG. 4 ) corresponding to the second area. The display support assembly may include a folding support structure (eg, the folding support structure 530 of FIG. 3 ). The folding support structure may include a plurality of joints (eg, the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 of FIG. 4 ). The plurality of joints may be sequentially engaged from the first support plate to the second support plate along the folding area, and may be parallel to the folding axis. One of the plurality of joints (eg, the fifth joint 75 of FIG. 4 ) may be coupled to a hinge structure (eg, the hinge assembly 230 of FIG. 4 ) forming the folding axis.

According to an embodiment of the present invention, the plurality of joints (eg, the plurality of joints 71, 72, 73, 74, 75, 76, 77, 78, 79 of FIG. 4) is a tooth and It may be engaged with a gear structure comprising a tooth space.

According to an embodiment of the present invention, the plurality of joints (eg, the plurality of joints 71, 72, 73, 74, 75, 76, 77, 78, 79 of FIG. 4 ) is the folding area (eg, : One surface coupled to the folding area 33 of FIG. 4 (eg, the first surface 811, 821, 831, 841, 851, 861, 871, 881, or 891) of FIG. 13), and the one surface The other surface positioned on the opposite side (eg, the second surface 812, 822, 832, 842, 852, 862, 872, 882, or 892 of FIG. 13), and one side connecting the one surface and the other surface (eg, : the third surface 853 of FIG. 11 or 12), and the other side connecting the one surface and the other surface and located on the opposite side to the one surface (eg, the fourth surface 854 of FIG. 11 or 12)) may include The gear structure may be formed on the one side and the other side.

According to an embodiment of the present invention, the gear structure includes a first gear structure (eg, the first gear structure 1151 of FIG. 11 ) formed on the one side (eg, the third surface 853 of FIG. 11 ). may include The first gear structure may include a first tooth (eg, a first tooth 1151a in FIG. 11 ) and a first tooth groove (eg, a first tooth groove 1151b in FIG. 11 ). The gear structure is a second gear structure (eg, the third gear structure 1153 of FIG. 11 ) formed on the other side surface (eg, the fourth surface 854 of FIG. 11 ) on the opposite side to the first gear structure may include The second gear structure may include a second tooth (eg, the third tooth 1153a of FIG. 11 ) and a second tooth groove (eg, the third tooth groove 1153b of FIG. 11 ). The first tooth and the second tooth groove may be engaged with each other. The second tooth and the first tooth groove may be engaged with each other.

According to an embodiment of the present invention, the plurality of joints (eg, the plurality of joints 71, 72, 73, 74, 75, 76, 77, 78, 79 of FIG. 4) is a support end (eg: support end 885 or support end 895 of FIG. 14 ). The support end may be located closer to the other surface (eg, the second surface 812 , 822 , 832 , 842 , 852 , 862 , 872 , 882 , or 892 of FIG. 13 ) than the gear structure. The support end may form the other surface, a part of the one side, and a part of the other side.

According to an embodiment of the present invention, the supporting end (eg, the supporting end 885 or the supporting end 895 of FIG. 14 ) is connected from the one surface (eg, the first side 851 of FIG. 11 ) to the other side ( Example: between the one side (eg, the third side 853 of FIG. 11 ) and the other side (eg, the fourth side 854 of FIG. 11 ) in a direction toward the second side 852 of FIG. 11 ) may be in a narrowed form.

According to an embodiment of the present invention, the other surface of the plurality of joints (eg, the second surface 812 , 822 , 832 , 842 , 852 , 862 , 872 , 882 , or 892 of FIG. 13 ) may include the housing When folded, the hinge structure (eg, the hinge assembly 230 of FIG. 14 ) may come into contact with a curved portion (eg, the curved portion 2111 of FIG. 14 ).

According to an embodiment of the present invention, the other surface of the plurality of joints (eg, the second surface 812, 822, 832, 842, 852, 862, 872, 882, or 892 of FIG. 13) is the curved portion A curved surface corresponding to (eg, the curved portion 2111 of FIG. 14 ) may be included.

According to an embodiment of the present invention, the first support plate (eg, the first support plate 510 of FIG. 4 ) or the second support plate (eg, the second support plate of FIG. 4 ) among the plurality of joints 520) and one adjacent joint (eg, the first joint 71 or the ninth joint 79 in FIG. 4 ) includes the first or second support plate and teeth and tooth grooves. It may be engaged in a gear structure.

According to an embodiment of the present invention, when viewed from above of the flexible display in a state in which the housing is not folded, a joint coupled to the hinge structure among the plurality of joints (eg, the fifth joint 75 in FIG. 4 ) )) may overlap the folding axis (eg, the folding axis (C) of FIG. 4 ).

According to an embodiment of the present invention, the plurality of joints (eg, the plurality of joints 71, 72, 73, 74, 75, 76, 77, 78, 79 of FIG. 4 ) may be an odd number. Among the plurality of joints, a centrally located joint (eg, the fifth joint 750 of FIG. 4 ) may be coupled to the hinge structure (eg, the hinge assembly 230 of FIG. 4 ).

According to an embodiment of the present invention, the joint coupled to the hinge structure among the plurality of joints (eg, the fifth joint 75 of FIG. 14 ) is the hinge structure (eg, the hinge assembly 230 of FIG. 14 ). ) may include a support (eg, the support 752 of FIG. 14 ) inserted into the recess formed in the hinge structure and coupled to the support.

According to an embodiment of the present invention, the electronic device (eg, the electronic device 2 of FIG. 2 ) includes the first support plate (eg, the first support plate 510 of FIG. 21 ) or the second support plate (eg, the second support plate 520 of FIG. 21 ) and a third support plate (eg, the third support plate 2181 or the fourth support plate 2182 of FIG. 21 ) may be further included. The third support plate may support a rear surface of the folding support structure (eg, the folding support structure 530 of FIG. 23 ) when the housing is folded.

According to an embodiment of the present invention, the hinge structure (eg, the hinge assembly 230 of FIG. 21 ) includes the first support plate (eg, the first support plate 510 of FIG. 4 ) and the second surface ( For example, a first hinge plate (eg, the first hinge plate 2121 of FIG. 21 or 22 ) extending between the second surfaces 20B of FIG. 2 ) may be included. The hinge structure includes a second hinge plate (eg, the second support plate 520 of FIG. 4 ) and a second hinge plate (eg, the second surface 20B of FIG. 2 ) extending between the second surface (eg, the second surface 20B of FIG. 2 ). : The second hinge plate 2122 of FIG. 21 or 22) may be included. The hinge structure may include a hinge part (eg, the first hinge part 2210 of FIG. 22 ) connecting the first hinge plate and the second hinge plate. The hinge part is a conical gear rotatable with respect to a rotation axis (eg, FIG. 21 or the first rotation axis C5) orthogonal to the folding axis (eg, the folding axis C in FIG. 21 or 22) (eg: first conical gear 2131 of FIG. 21 or 22 ). A first hinge arm of the first hinge plate (eg, in FIG. 22) including a first gear (eg, the first gear 2201a in FIG. 22 ) meshed with the conical gear rotatably based on the folding axis 22 of the first hinge arm 2201). The second hinge plate includes a second gear (eg, a second gear 2202a of FIG. 22 ) that is rotatably engaged with the conical gear on the opposite side of the hinge portion with respect to the folding axis on the opposite side to the first gear of the second hinge arm (eg, the second hinge arm 2202 of FIG. 22 ).

According to an embodiment of the present disclosure, the electronic device (eg, the electronic device 2 of FIG. 4 ) includes the folding shaft (eg, the folding shaft C of FIG. 21 ) and the rotation shaft (eg, the electronic device 2 of FIG. 21 ). A force in a direction perpendicular to the first rotation axis C5 or the second rotation axis C6 and away from the folding axis is applied to the first support plate (eg, the first support plate 510 in FIG. 4 ) or the An elastic member (eg, a first tension member 2161, a second tension member 2162, a third tension member 2163), or a fourth tension member 2164).

According to an embodiment of the present invention, the first support plate or the second support plate may include an opening (eg, the opening 2122c of FIG. 21 , 25 , or 26 ). The elastic member (eg, the second tension member 2162 of FIGS. 21 , 25 , or 26 ) may be disposed in the opening.

According to an embodiment of the present invention, the electronic device (eg, the electronic device 2 of FIG. 2 ) may include a housing (eg, the foldable housing 20 of FIG. 2 ). The foldable housing may include a first surface of the electronic device (eg, the first surface 20A of FIG. 2 ), and a second surface of the electronic device (eg, FIG. 2 ) facing in a direction opposite to the first surface. of the second surface 20B). The housing may be foldable from the first surface with respect to a folding axis (eg, the folding axis C of FIG. 2 ). The electronic device may include a flexible display (eg, the flexible display 30 of FIG. 2 ) positioned in the housing. The flexible display may be visually exposed through the first surface. The flexible display includes a first area (eg, the first area 31 of FIG. 3 ), a second area (eg, the second area 32 of FIG. 3 ), and between the first area and the second area. may include a folding area (eg, the folding area 33 of FIG. 3 ). The electronic device may include a folding support structure (eg, the folding support structure 530 of FIG. 3 ). The folding support structure may include a plurality of joints (eg, the plurality of joints 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 of FIG. 4 ). The plurality of joints may be arranged to be sequentially engaged with the rear surface of the folding area, and may be parallel to the folding axis. One of the plurality of joints (eg, the fifth joint 75 of FIG. 4 ) may be coupled to a hinge structure (eg, the hinge assembly 230 of FIG. 4 ) forming the folding axis.

According to an embodiment of the present invention, when viewed from above of the flexible display in a state in which the housing is not folded, a joint coupled to the hinge structure among the plurality of joints (eg, the fifth joint 75 in FIG. 4 ) )) may overlap the folding axis (eg, the folding axis (C) of FIG. 4 ).

According to an embodiment of the present invention, the plurality of joints (eg, the plurality of joints 71, 72, 73, 74, 75, 76, 77, 78, 79 of FIG. 4) is a tooth and It may be engaged with a gear structure comprising a tooth space. The plurality of joints are connected to one surface (eg, the first surfaces 811, 821, 831, 841, 851, 861, 871, 881, or 891)), and the other surface (eg, the second surface 812, 822, 832, 842, 852, 862, 872, 882, or 892 of FIG. 13) positioned opposite to the one surface, and the one surface and one side connecting the other surface (eg, the third surface 853 of FIG. 11 or 12), and the other side connecting the one surface and the other surface and located opposite to the one side (eg, FIG. 11 ) or the fourth face 854 of 12). The gear structure may be formed on the one side and the other side.

According to an embodiment of the present invention, the gear structure includes a first gear structure (eg, the first gear structure 1151 of FIG. 11 ) formed on the one side surface (eg, the third surface 853 of FIG. 11 ). may include The first gear structure may include a first tooth (eg, a first tooth 1151a in FIG. 11 ) and a first tooth groove (eg, a first tooth groove 1151b in FIG. 11 ). The gear structure is a second gear structure (eg, the third gear structure 1153 of FIG. 11 ) formed on the other side surface (eg, the fourth surface 854 of FIG. 11 ) on the opposite side to the first gear structure may include The second gear structure may include a second tooth (eg, the third tooth 1153a of FIG. 11 ) and a second tooth groove (eg, the third tooth groove 1153b of FIG. 11 ). The first tooth and the second tooth groove may be engaged with each other. The second tooth and the first tooth groove may be engaged with each other.

According to an embodiment of the present invention, the electronic device (eg, the electronic device 2 of FIG. 2 ) includes the first support plate (eg, the first support plate 510 of FIG. 21 ) or the second support plate (eg, the second support plate 520 of FIG. 21 ) and a third support plate (eg, the third support plate 2181 or the fourth support plate 2182 of FIG. 21 ) may be further included. The third support plate may support a rear surface of the folding support structure (eg, the folding support structure 530 of FIG. 23 ) when the housing is folded.

The embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples in order to easily explain the technical contents according to the embodiments of the present invention and help the understanding of the embodiments of the present invention, and limit the scope of the embodiments of the present invention It's not what you want to do. Therefore, in the scope of various embodiments of the present invention, in addition to the embodiments disclosed herein, all changes or modifications derived from the technical ideas of various embodiments of the present invention should be interpreted as being included in the scope of various embodiments of the present invention. .

2: Electronic device
212: first side member
222: second side member
411: first support member
412: second support member
211: first back cover
221: second rear cover
30: flexible display
500: display support assembly
510: first support plate
520: second support plate
530: folding support structure
71, 72, 73, 74, 75, 76, 77, 78, 78: a plurality of joints
230: hinge assembly

Claims (20)

In an electronic device,
a housing including a first surface of the electronic device and a second surface of the electronic device facing in a direction opposite to the first surface, wherein the first surface is foldable outwardly based on a folding axis;
a flexible display positioned within the housing, visually exposed through the first surface, and including a first area, a second area, and a folding area between the first area and the second area; and
A display support assembly disposed on a rear surface of the flexible display, comprising:
a first support plate corresponding to the first area;
a second support plate corresponding to the second region; and
a display support assembly including a folding support structure arranged in sequential engagement from the first support plate to the second support plate along the folding area and including a plurality of joints parallel to the folding axis; and,
One joint of the plurality of joints,
An electronic device coupled with a hinge structure forming the folding axis.
The method of claim 1,
The plurality of joints,
An electronic device meshed with a gear structure comprising a tooth and a tooth space.
3. The method of claim 2,
The plurality of joints,
one surface coupled to the folding area, and the other surface positioned opposite to the one surface; and
One side connecting the one side and the other side, and the other side connecting the one side and the other side and located on the opposite side to the one side,
The gear structure is
An electronic device formed on the one side and the other side.
4. The method of claim 3,
The gear structure is
a first gear structure formed on the one side and including a first tooth and a first tooth groove; and
and a second gear structure formed on the other side opposite to the first gear structure and including second teeth and a second tooth groove,
The first tooth and the second tooth groove are in a form that can be engaged with each other,
The second tooth and the first tooth groove may be engaged with each other.
4. The method of claim 3,
The plurality of joints,
It is located closer to the other surface than the gear structure, and includes a support end forming the other surface, a part of the one side, and a part of the other side,
The support end has a shape in which the distance between the one side and the other side is narrowed in a direction from the one side to the other side.
4. The method of claim 3,
The other surface of the plurality of joints,
When the housing is folded, the electronic device is in contact with the curved portion of the hinge structure.
7. The method of claim 6,
The other surface of the plurality of joints,
An electronic device including a curved surface corresponding to the curved portion.
The method of claim 1,
One joint adjacent to the first support plate or the second support plate among the plurality of joints,
An electronic device meshed with the first support plate or the second support plate with a gear structure including teeth and tooth grooves.
The method of claim 1,
When viewed from the top of the flexible display in a state in which the housing is not folded, a joint coupled to the hinge structure among the plurality of joints overlaps the folding axis.
The method of claim 1,
The plurality of joints is an odd number,
An electronic device in which a joint positioned at a center among the plurality of joints is coupled to the hinge structure.
The method of claim 1,
A joint coupled to the hinge structure among the plurality of joints,
and a support part inserted into a recess formed in the hinge structure and coupled to the hinge structure.
The method of claim 1,
Further comprising a third support plate coupled to the first support plate or the second support plate,
The third support plate,
An electronic device supporting a rear surface of the folding support structure when the housing is folded.
The method of claim 1,
The hinge structure is
a first hinge plate extending between the first support plate and the second surface;
a second hinge plate extending between the second support plate and the second surface; and
a hinge portion connecting the first hinge plate and the second hinge plate;
The hinge part,
a conical gear rotatable based on a rotation axis orthogonal to the folding axis;
a first hinge arm of the first hinge plate including a first gear meshed with the conical gear rotatably with respect to the folding axis; and
and a second hinge arm of the second hinge plate including a second gear that is rotatably engaged with the conical gear on an opposite side to the first gear with respect to the folding shaft.
14. The method of claim 13,
and an elastic member that applies a force in a direction perpendicular to the folding axis and the rotation axis and away from the folding axis on the first support plate or the second support plate.
15. The method of claim 14,
The first support plate or the second support plate includes an opening,
The elastic member is located in the opening.
In an electronic device,
a housing including a first surface of the electronic device and a second surface of the electronic device facing in a direction opposite to the first surface, wherein the first surface is foldable with respect to a folding axis;
a flexible display positioned within the housing, visually exposed through the first surface, and including a first area, a second area, and a folding area between the first area and the second area; and
and a folding support structure arranged to be sequentially engaged with the rear surface of the folding area and including a plurality of joints parallel to the folding axis,
One joint of the plurality of joints,
An electronic device coupled with a hinge structure forming the folding axis.
17. The method of claim 16,
When viewed from the top of the flexible display in a state in which the housing is not folded, a joint coupled to the hinge structure among the plurality of joints overlaps the folding axis.
17. The method of claim 16,
The plurality of joints,
It is meshed with a gear structure including a tooth and a tooth space,
one surface coupled to the folding area, and the other surface positioned opposite to the one surface; and
One side connecting the one side and the other side, and the other side connecting the one side and the other side and located on the opposite side to the one side,
The gear structure is
An electronic device formed on the one side and the other side.
19. The method of claim 18,
The gear structure is
a first gear structure formed on the one side and including a first tooth and a first tooth groove; and
and a second gear structure formed on the other side opposite to the first gear structure and including second teeth and a second tooth groove,
The first tooth and the second tooth groove are in a form that can be engaged with each other,
The second tooth and the first tooth groove may be engaged with each other.
17. The method of claim 16,
The electronic device further comprising a support plate for supporting a rear surface of the folding support structure when the housing is folded.

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