Patent Publication Number: US-2023147784-A1

Title: Electronic device with hinge unit

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a PCT-Bypass Continuation application of International Application No. PCT/KR2022/016771 designating the United States, filed on Oct. 30, 2022, in the Korean Intellectual Property Receiving Office and claiming priority to Korean Patent Application No. 10-2021-0151235, filed on Nov. 5, 2021, and Korean Patent Application No. 10-2021-0187131, filed on Dec. 24, 2021, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties. 
    
    
     BACKGROUND 
     1. Field 
     The disclosure relates to an electronic device including a hinge unit and a method of controlling the same. 
     2. Description of Related Art 
     Electronic devices have been developed to be usable in various forms. As technology develops, portable electronic devices, such as a smartphone, a laptop, and a tablet personal computer (PC), have been distributed. A hinge unit is a component to which a housing of an electronic device is rotatably connected. An electronic device may be used for various purposes by changing a shape of the hinge unit according to a usage environment. 
     For example, an electronic device, such as a laptop, may include an upper housing in which there is a display, and a lower housing in which there may be a keyboard or an input device. According to an angle between the upper housing and the lower housing, the electronic device may be foldable and unfoldable between transformed into a folded state that is convenient to carry and an unfolded state in which a display screen is exposed to the outside (e.g., outside of the electronic device). An electronic device, such as a convertible PC or a 2-in-1 PC, that has a clamshell mode where the electronic device is supported by an external support and a tablet mode where the electronic device is rotated 360 degrees from the folded state, has been launched. 
     SUMMARY 
     To increase portability of an electronic device, a thickness of the electronic device has been reduced by decreasing the width of the electronic device. However, for an implementation of a slim electronic device, a gap including internal components of the electronic device may become smaller, an area occupied by a means for dissipating heat (e.g., heat dissipating member) from the internal components may decrease, the electronic device may generate the heat, and the performance of the electronic device may decrease, thereby inconveniencing a user. 
     It may be difficult for an electronic device to secure heat dissipation performance for cooling the internal components and to implement a slim electronic device at the same time. 
     Various embodiments of the disclosure may provide an electronic device that includes a plurality of doors openable and closable (e.g., opened and closed) based on a rotation angle of a housing. Accordingly, a cooling path of internal components of the electronic device may be formed and a slim electronic device may be implemented. 
     The tasks to be solved by various embodiments of the disclosure are not limited to the foregoing, and other tasks not mentioned herein will be clearly understood by those skilled in the art from the following description. 
     According to an embodiment of the disclosure, an electronic device may include a first housing including a display module that displays a screen; a second housing including a first door provided on one surface and a second door provided on a surface opposite to the first door; a hinge unit configured to rotatably connect the first housing to the second housing; and a driving module configured to open and close the first door and the second door by interoperating with the hinge unit, where the driving module is configured to open the first door when a rotation angle that is an angle formed between the first housing and the second housing based on the hinge unit is less than a set first angle and to open the second door when the rotation angle is greater than a set second angle. 
     According to an embodiment of the disclosure, an electronic device may include a housing including a first housing including a first surface and a second surface opposite to the first surface, a second housing including a third surface and a fourth surface opposite to the third surface, a first door provided on the third surface and a second door provided on the fourth surface; a hinge unit configured to connect the first housing to the second housing and adjust a rotation angle, which is an angle formed between the first housing and the second housing, from a start angle at which the first surface and the fourth surface face each other to an end angle at which the second surface and the third surface face each other; and a driving module configured to open the first door when the rotation angle is less than a set first angle and to open the second door when the rotation angle is greater than a second angle, the second angle being equal to or greater than the first angle. 
     According to various embodiments, an electronic device may open and close at least one of a first door and a second door according to user’s usage environment, based on a rotation angle of a housing that rotates by interoperating with a hinge unit, and accordingly, an internal component of the electronic device may be efficiently cooled. 
     Alternatively, according to various embodiments, the electronic device may provide a fluid path based on opening and closing of the first door and the second door, thereby decreasing the total width of the electronic device in a folded state and implementing a slim electronic device to improve portability. 
     Effects of the electronic device according to various embodiments are not limited to the foregoing, and other effects not mentioned herein will be clearly understood by those skilled in the art from the following description. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspects, features, and advantages of certain embodiments of the present disclosure will be more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which: 
         FIG.  1    is a block diagram illustrating an example electronic device in a network environment according to an embodiment; 
         FIG.  2 A  is a perspective view illustrating an electronic device according to an embodiment; 
         FIG.  2 B  is a perspective view illustrating an electronic device according to an embodiment; 
         FIG.  3    is a perspective view illustrating a hinge unit according to an embodiment; 
         FIG.  4 A  illustrates a state of an electronic device according to an embodiment; 
         FIG.  4 B  illustrates a state of an electronic device according to an embodiment; 
         FIG.  4 C  illustrates a state of an electronic device according to an embodiment; 
         FIG.  4 D  illustrates a state of an electronic device according to an embodiment; 
         FIG.  4 E  illustrates a state of an electronic device according to an embodiment; 
         FIG.  5 A  is a side view illustrating a hinge unit and a first door according to an embodiment; 
         FIG.  5 B  is a side view illustrating a hinge unit and a second door according to an embodiment; 
         FIG.  6 A  illustrates a state of an electronic device according to an embodiment; 
         FIG.  6 B  illustrates a state of an electronic device according to an embodiment; 
         FIG.  6 C  illustrates a state of an electronic device according to an embodiment; 
         FIG.  6 D  illustrates a state of an electronic device according to an embodiment; 
         FIG.  6 E  illustrates a state of an electronic device according to an embodiment; 
         FIG.  7 A  illustrates a state of an electronic device according to an embodiment; 
         FIG.  7 B  illustrates a state of an electronic device according to an embodiment; and 
         FIG.  7 C  illustrates a state of an electronic device according to an embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, various embodiments will be described in greater detail with reference to the accompanying drawings. When describing the embodiments with reference to the accompanying drawings, like reference numerals refer to like elements and a repeated description related thereto will be omitted. As used herein, a reference number may indicate a singular element or a plurality of the element. For example, a reference number labeling a singular form of an element within the drawing figures may be used to reference a plurality of the singular element within the text of specification. 
     It should be appreciated that various embodiments of the present disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. In connection with the description of the drawings, like reference numerals may be used for similar or related components. 
     It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, “a”, “an,” “the,” and “at least one” do not denote a limitation of quantity, and are intended to include both the singular and plural, unless the context clearly indicates otherwise. For example, “an element” has the same meaning as “at least one element,” unless the context clearly indicates otherwise. “At least one” is not to be construed as limiting “a” or “an.” “Or” means “and/or.” 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 “at least one of A, B, or C,” each of which may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms “comprises” and/or “comprising,” or “includes” and/or “including” when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof. 
     Terms such as “first”, “second”, or “first” or “second” may simply be used to distinguish the component from other components in question, and do not limit the components in other aspects (e.g., importance or order). 
     It is to be understood that if an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively”, as “coupled with,” “coupled to,” “connected with,” or “connected to” another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element. In contrast, if an element (e.g., a first element) is referred to as being “directly coupled with,” “directly coupled to,” “directly connected with,” or “directly connected to” another element (e.g., a second element), it means that the element may be coupled with the other element without a third (intervening) element therebetween. 
     Furthermore, relative terms, such as “lower” or “bottom” and “upper” or “top,” may be used herein to describe one element’s relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on “upper” sides of the other elements. The term “lower,” can therefore, encompasses both an orientation of “lower” and “upper,” depending on the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The terms “below” or “beneath” can, therefore, encompass both an orientation of above and below. 
     “About” or “approximately” as used herein is inclusive of the stated value and means within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, considering the measurement in question and the error associated with measurement of the particular quantity (i.e., the limitations of the measurement system). For example, “about” can mean within one or more standard deviations, or within ± 30%, 20%, 10% or 5% of the stated value. 
     Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     Embodiments are described herein with reference to cross section illustrations that are schematic illustrations of idealized embodiments. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments described herein should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, a region illustrated or described as flat may, typically, have rough and/or nonlinear features. Moreover, sharp angles that are illustrated may be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the present claims. 
     As used in connection with various embodiments of the disclosure, the term “module” may include a unit implemented in hardware, software, or firmware, and may interchangeably be used with other terms, for example, “logic,” “logic block,” “part,” or “circuitry”. A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment, the module may be implemented in a form of an application-specific integrated circuit (ASIC). 
     Various embodiments as set forth herein may be implemented as software (e.g., the program  140 ) including one or more instructions that are stored in a storage medium (e.g., an internal memory  136  or an external memory  138 ) that is readable by a machine (e.g., the electronic device  101 ). For example, a processor (e.g., the processor  120 ) of the machine (e.g., the electronic device  101 ) may invoke at least one of the one or more instructions stored in the storage medium, and execute it. This allows the machine to be operated to perform at least one function according to the at least one instruction invoked. The one or more instructions may include a code generated by a complier or a code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, the term “non-transitory” simply means that the storage medium is a tangible device, and does not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium. 
     According to an embodiment, a method according to various embodiments of the disclosure may be included and provided in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or be distributed (e.g., downloaded or uploaded) online via an application store (e.g., PlayStore™), or between two user devices (e.g., smart phones) directly. If distributed online, at least part of the computer program product may be temporarily generated or at least temporarily stored in the machine-readable storage medium, such as memory of the manufacturer’s server, a server of the application store, or a relay server. 
     According to various embodiments, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added. 
     Hereinafter, a hinge unit  310  and an electronic device  201  including the hinge unit  310  according to various embodiments of the disclosure are described with reference to  FIG.  1  through  7 C . 
       FIG.  1    is a block diagram illustrating an electronic device  101  in a network environment  100  according to various embodiments. Referring to  FIG.  1   , the electronic device  101  in the network environment  100  may communicate with an electronic device  102   via a first network  198  (e.g., a short-range wireless communication network), or communicate with at least one of an electronic device  104  or a server  108  via a second network  199  (e.g., a long-range wireless communication network). According to an embodiment, the electronic device  101  may communicate with the electronic device  104  via the server  108 . According to an embodiment, the electronic device  101  may include any one or any combination of 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 , an interface  177 , a connecting terminal  178 , a haptic module  179 , a camera module  180 , a power management module  188 , a battery  189 , a communication module  190 , a subscriber identification module (SIM)  196 , and an antenna module  197 . In some embodiments, at least one (e.g., the connecting terminal  178 ) of the above components may be omitted from the electronic device  101 , or one or more other components may be added in the electronic device  101 . In some embodiments, some (e.g., the sensor module  176 , the camera module  180 , or the antenna module  197 ) of the components may be integrated as a single component (e.g., the display module  160 ). 
     The processor  120  may execute, for example, software (e.g., a program  140 ) to control at least one other component (e.g., a hardware or software component) of the electronic device  101  connected to the processor  120 , and may perform various data processing or computation. According to an embodiment, as at least a part of data processing or computation, the processor  120  may store a command or data received from another components (e.g., the sensor module  176  or the communication module  190 ) in a volatile memory  132 , process the command or the data stored in the volatile memory  132 , and store resulting data in a non-volatile memory  134 . According to an embodiment, the processor  120  may include a main processor  121  (e.g., a central processing unit (CPU) or an application processor (AP)) or an auxiliary processor  123  (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently of, or in conjunction with the main processor  121 . For example, when the electronic device  101  includes the main processor  121  and the auxiliary processor  123 , the auxiliary processor  123  may be adapted to consume less power than the main processor  121  or to be specific to a specified function. The auxiliary processor  123  may be implemented separately from the main processor  121  or as a part of the main processor  121 . 
     The auxiliary processor  123  may control at least some of functions or states related to at least one (e.g., the display module  160 , the sensor module  176 , or the communication module  190 ) of the components of the electronic device  101 , instead of the main processor  121  while the main processor  121  is in an inactive (e.g., sleep) state or along with the main processor  121  while the main processor  121  is an active state (e.g., executing an application). According to an embodiment, the auxiliary processor  123  (e.g., an ISP or a CP) may be implemented as a portion of another component (e.g., the camera module  180  or the communication module  190 ) that is functionally related to the auxiliary processor  123 . According to an embodiment, the auxiliary processor  123  (e.g., an NPU) may include a hardware structure specified for artificial intelligence model processing. An artificial intelligence model may be generated by machine learning. Such learning may be performed by, for example, the electronic device  101  in which artificial intelligence is performed, or performed via a separate server (e.g., the server  108 ). Learning algorithms may include, but are not limited to, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. An artificial neural network may include, for example, a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), and a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more thereof, but is not limited thereto. The artificial intelligence model may additionally or alternatively, include a software structure other than the hardware structure. 
     The memory  130  may store various data used by at least one component (e.g., the processor  120  or the sensor module  176 ) of the electronic device  101 . The various data may include, for example, software (e.g., the program  140 ) and input data or output data for a command related thereto. The memory  130  may include the volatile memory  132  or the non-volatile memory  134 . 
     The program  140  may be stored as software in the memory  130 , and may include, for example, an operating system (OS)  142 , middleware  144 , or an application  146 . 
     The input module  150  may receive a command or data to be used by another component (e.g., the processor  120 ) of the electronic device  101 , from the outside (e.g., a user) of the electronic device  101 . The input module  150  may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., 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 may be used for general purposes, such as playing multimedia or playing record. The receiver may be used to receive an incoming call. According to an embodiment, the receiver may be implemented separately from the speaker or as a part of the speaker. 
     The display module  160  may visually provide information to the outside (e.g., a user) of the electronic device  101  (e.g., a user). The display module  160  may include, for example, a control circuit for controlling a display, a hologram device, or a projector and control circuitry to control a corresponding one of the display, the hologram device, and the projector. According to an embodiment, the display module  160  may include a touch sensor adapted to sense a touch, or a pressure sensor adapted to measure an intensity of a force incurred by the touch. 
     The audio module  170  may convert a sound into an electric signal or vice versa. According to an embodiment, the audio module  170  may obtain the sound via the input module  150  or output the sound via the sound output module  155  or an external electronic device (e.g., an electronic device  102  such as a speaker or a headphone) directly or wirelessly connected to the electronic device  101 . 
     The sensor module  176  may detect an operational state (e.g., power or temperature) of the electronic device  101  or an environmental state (e.g., a state of a user) external to the electronic device  101 , and generate an electric signal or data value corresponding to the detected state. According to an embodiment, the sensor module  176  may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor. 
     The interface  177  may support one or more specified protocols to be used for the electronic device  101  to be coupled with the external electronic device (e.g., the electronic device  102 ) directly (e.g., wiredly) or wirelessly. According to an embodiment, the interface  177  may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface. 
     The connecting terminal  178  may include a connector via which the electronic device  101  may be physically connected to an external electronic device (e.g., the electronic device  102 ). According to an embodiment, the connecting terminal  178  may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector). 
     The haptic module  179  may convert an electric signal into a mechanical stimulus (e.g., a vibration or a movement) or an electrical stimulus which may be recognized by a user via his or her tactile sensation or kinesthetic sensation. According to an embodiment, the haptic module  179  may include, for example, a motor, a piezoelectric element, or an electric stimulator. 
     The camera module  180  may capture a still image 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 an embodiment, the battery  189  may include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell. 
     The communication module  190  may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device  101  and the external electronic device (e.g., the electronic device  102 , the electronic device  104 , or the server  108 ) and performing communication via the established communication channel. The communication module  190  may include one or more communication processors that are operable independently of the processor  120  (e.g., an AP) and that support a direct (e.g., wired) communication or a wireless communication. According to an embodiment, the communication module  190  may include a wireless communication module  192  (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module  194  (e.g., a local area network (LAN) communication module, or a power line communication (PLC) module). A corresponding one of these communication modules may communicate with the external electronic device  104  via the first network  198  (e.g., a short-range communication network, such as Bluetooth™, wireless-fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or the second network  199  (e.g., a long-range communication network, such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multi components (e.g., multi chips) separate from each other. The wireless communication module  192  may identify and authenticate the electronic device  101  in a communication network, such as the first network  198  or the second network  199 , using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the SIM  196 . 
     The wireless communication module  192  may support a 5G network after a 4G network, and a next-generation communication technology, e.g., a new radio (NR) access technology. The NR access technology may support enhanced mobile broadband (eMBB), massive machine type communications (mMTC), or ultra-reliable and low-latency communications (URLLC). The wireless communication module  192  may support a high-frequency band (e.g., a mmWave band) to achieve, e.g., a high data transmission rate. The wireless communication module  192  may support various technologies for securing performance on a high-frequency band, such as, e.g., beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna. The wireless communication module  192  may support various requirements specified in the electronic device  101 , an external electronic device (e.g., the electronic device  104 ), or a network system (e.g., the second network  199 ). According to an embodiment, the wireless communication module  192  may support a peak data rate (e.g., 20 Gbps or more) for implementing eMBB, loss coverage (e.g., 164 dB or less) for implementing mMTC, or U-plane latency (e.g., 0.5 ms or less for each of downlink (DL) and uplink (UL), or a round trip of 1 ms or less) for implementing URLLC. 
     The antenna module  197  may transmit or receive a signal or power to or from the outside (e.g., the external electronic device) of the electronic device  101 . According to an embodiment, the antenna module  197  may include an antenna including a radiating element including a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module  197  may include a plurality of antennas (e.g., array antennas). In such a case, at least one antenna appropriate for a communication scheme used in a communication network, such as the first network  198  or the second network  199 , may be selected by, for example, the communication module  190  from the plurality of antennas. The signal or the power may be transmitted or received between the communication module  190  and the external electronic device via the at least one selected antenna. According to an embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element 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 an embodiment, the mmWave antenna module may include a PCB, an RFIC disposed on a first surface (e.g., a bottom surface) of the PCB or adjacent to the first surface and capable of supporting a designated a high-frequency band (e.g., the mmWave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., a top or a side surface) of the PCB, or adjacent to the second surface and capable of transmitting or receiving signals in the designated high-frequency band. As being ‘adjacent to,’ an element may be close in physical proximity, etc., without being limited thereto. 
     At least some of the above-described components may be coupled mutually and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)). 
     According to an embodiment, commands or data may be transmitted or received between the electronic device  101  and the external electronic device  104  via the server  108  coupled with the second network  199 . Each of the external electronic devices  102  and  104  may be a device of the same type as or a different type from the electronic device  101 . According to an embodiment, all or some of operations to be executed by the electronic device  101  may be executed at one or more of the external electronic devices  102 ,  104 , and  108 . For example, if the electronic device  101  needs to perform a function or a service automatically, or in response to a request from a user or another device, the electronic device  101 , instead of, or in addition to, executing the function or the service, may request one or more external electronic devices to perform at least part of the function or the service. The one or more external electronic devices receiving the request may perform the at least part of the function or the service requested, or an additional function or an additional service related to the request, and may transfer an outcome of the performing to the electronic device  101 . The electronic device  101  may provide the outcome, with or without further processing of the outcome, as at least part of a reply to the request. To that end, a cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device  101  may provide ultra low-latency services using, e.g., distributed computing or mobile edge computing. In an embodiment, the external electronic device  104  may include an Internet-of-things (IoT) device. The server  108  may be an intelligent server using machine learning and/or a neural network. 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 intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology or IoT-related technology. 
       FIG.  2 A  is a perspective view illustrating the electronic device  201  according to an embodiment, and  FIG.  2 B  is a perspective view illustrating the electronic device  201  according to an embodiment. 
     Referring to  FIGS.  2 A and  2 B , the electronic device  201  (e.g., the electronic device  101  of  FIG.  1   ) according to various embodiments may include at least some of a first housing  210 , a second housing  220 , and a display module  211 . 
     In an embodiment, the electronic device  201  may be a wireless communication device, a display device, a laptop computer, or a tablet personal computer (PC). For ease of description, although  FIGS.  2 A and  2 B  illustrate a notebook computer, which is a laptop PC, as an embodiment of the electronic device  201 , the electronic device  201  is not limited thereto in the implementation and the electronic device  201  may be implemented as various types of electronic devices. 
     In an embodiment, the first housing  210  may form an external appearance of the electronic device  201 . In an embodiment, the first housing  210  may include a first surface  215  that is one surface in a direction (e.g., -Y direction) and a second surface  218  opposite to the first surface  215 . The first surface  215  may be formed where most regions are opened such that the display module  211  is exposed to the outside, and the display module  211  may define a display screen in a direction of the first surface  215 . 
     In an embodiment, the second housing  220  may be rotatably connected with and foldable with respect to the first housing  210 , via the hinge unit  310 . The second housing  220  may include a third surface  228  that is one surface in a direction (e.g., -Z direction) and a fourth surface  225  opposite to the third surface  228 . The second housing  220  may be formed to comprise a shape corresponding to the first housing  210 , for example, the size and area (e.g. planar area) of the fourth surface  225  of the second housing  220  may correspond to the size and area (e.g., planar area) of the first surface  215  of the first housing  210 . 
     In an embodiment, the second housing  220  may include a first door  301  provided on (or at) the third surface  228  and a second door  302  provided on (or at) the fourth surface  225 . For example, the second door  302  may be formed to be connected to an input device  221  or formed as a single body with the input device  221 , and the first door  301  may be disposed on a rear surface of the electronic device  201  opposite to the second door  302  of the second housing  220  which is at the front surface of the electronic device  201 . The first door  301  and the second door  302  may be openable and closable relative to a remainder of the electronic device  201 . In various embodiments, the first door  301  and the second door  302  may be opened and closed by interoperating with a rotation state of the first housing  210  and the second housing  220  relative to each other. That is ,the first door  301  and the second door  302  may be variously openable and closeable together with rotation of the first housing  210  and the second housing  220  relative to each other. An opening and closing structure of the first door  301  and the second door  302  is described in detail with reference to  FIG.  4 A  and thereafter. 
     In an embodiment, the second housing  220  may include the input device  221  and a touch pad  222  that are disposed on the fourth surface  225 . In an embodiment, the input device  221  may be a keyboard or may be an input device including a touch recognition function and/or a display function. The fourth surface  225  of the second housing  220  may be formed such that the input device  221  and the touch pad  222  are exposed to the outside (e.g., outside of the electronic device  201 ). The input device  221  and the touch pad  222  may be exposed to the outside via the fourth surface  225  and may be manipulated the outside, such as by a user. The input device  221  and the touch pad  222  may be exposed to outside the fourth surface  225  via a groove defined in the second housing  220  by portions of the fourth surface  225 . User manipulation information input via the input device  221  and the touch pad  222  may be provided to a processor (e.g., the processor  120  of  FIG.  1   ). 
     In an embodiment, in the electronic device  201 , a connection state between the first housing  210  and the second housing  220  may be changed according to a user’s use state of the hinge unit  310 . In various embodiments, a single hinge unit  310  may be at the center of a connection region between the first housing  210  and the second housing  220 , or a plurality of hinge units  310  may be spaced apart from one another at the connection region between the first housing  210  and the second housing  220 . The hinge unit  310  may rotatably connect the first housing  210  to the second housing  220 . In an embodiment, the hinge unit  310  may be connected to or include a driving module  350  (of  FIG.  3   ), The driving module  350  may open and close the first door  301  and the second door  302  by interoperating the various doors together with the hinge unit  310 . The driving module  310  and the plurality of doors  301  and  302  are described in detail with reference to  FIG.  3    and thereafter. 
     In an embodiment, in the electronic device  201 , a relative connection state between the first housing  210  and the second housing  220  may change to be an “unfolded state” in which the electronic device  201  is unfolded to dispose the display module  211 , the input device  221 , and the touch pad  222  visually exposed to the outside, and a “folded state” in which the electronic device  201  is folded to dispose the first surface  215  of the first housing  210  and the fourth surface  225  of the second housing  220  facing each other such that the display module  211 , the input device  221 , and the touch pad  222  are not visible from outside the electronic device  201  which is folded. In various embodiments, the electronic device  201  may be driven in a plurality of use modes according to an angle between the first housing  210  and the second housing  220  in the unfolded state and may be a convertible PC or a 2-in-1 PC according to the use modes, the angles between the various housings, etc. 
     For example, in the electronic device  201  which is the convertible PC, the first housing  210  may rotate about a rotation axis of the electronic device  202  substantially up to a range of 360 degrees, based on the second housing  220 . For example, the hinge unit  310  may adjust a rotation angle (e.g., a rotation angle θ of  FIG.  4 A ), which is an angle between the first housing  210  and the second housing  220 , from a start angle at which the first surface  215  and the fourth surface  225  face each other to an end angle at which the second surface  218  and the third surface  228  face each other (e.g., the first surface  215  and the fourth surface  225  face away each other). For example, the electronic device  201  may be driven in a clamshell mode or a laptop mode in which the rotation angle is in a range from the start angle (e.g., 0 degrees) to a set angle (e.g., 180 degrees), or the electronic device  201  may be driven in a tablet mode in which the rotation angle is in a range from the set angle to the end angle (e.g., 360 degrees). The user may use a single electronic device by transforming the single electronic device to various forms to meet a usage environment, and a usability of the electronic device  201  may be expanded. 
     In an embodiment, the first housing  210  and the second housing  220  may be separable from one another. For example, the first housing  210  and the second housing  220  may be integrally connected and rotatable with respect to each other via the hinge unit  310  that connects the first housing  210  to the second housing  220 , or may be implemented as individual display devices capable of being combined with each other and separated from each other into the respective independent display elements. 
     In various embodiments, the display module  211  may generate and/or display visual information (e.g., text, video, and/or images) to outside the electronic device  201  (e.g., to the user). In an embodiment, the display module  211  may be connected to the first housing  210  and may be visually exposed to the outside of the electronic device  201  via the first surface  215  of the first housing  210 . For example, the display module  211  may be seated on a recess formed in (or defined by portions of) the first surface  215  of the first housing  210  and may form most of the first surface  215 . 
     In an embodiment, the display module  211  (e.g., the display module  160  of  FIG.  1   ) may include a display panel and a protective glass (or a protective film or a window) which is stacked on the outer surface of the display panel to face the display panel. In an embodiment, the protective film is a thin film layer formed of (or including) a transparent material and may include a plastic film (e.g., a polyimide film) or thin film glass (e.g., ultra-thin glass (UTG)). In an embodiment, the display panel may include an unbreakable (UB)-type organic light-emitting diode (OLED) display (e.g., a curved display) that includes an OLED or a micro light-emitting diode (LED). 
     In an embodiment, a touch panel (not illustrated) may be formed at least a part of the display panel and the display panel may include an on-cell touch active matrix OLED (AMOLED) (OCTA)-type display. However, the types of the display panel are not limited thereto, and the display panel may be formed in various types (e.g., add-on type and in-cell type). In an embodiment, the display module  211  may include a digitizer panel (not illustrated) for detecting an input (e.g., a touch input or a hovering input) of an input device (e.g., a stylus pen). A digitizer may convert an analog coordinate of an input device (e.g., a stylus pen) into digital data to transfer the digital data to the processor (e.g., the processor  120  of  FIG.  1   ). The processor  120  may detect the input (e.g., the touch input or the hovering input) of an input device (e.g., a stylus pen), based on the digital data input from a digitizer  260 . Various components or layers of the electronic device  201  may be foldable, unfoldable, rotatable, etc. together with each other. 
     In an embodiment, when the display module  211  is visually exposed to outside the electronic device  201  via the first surface  215 , an operation state of the display module  211  may change depending on the relative connection state of the second housing  220  to the first housing  210 . For example, in the unfolded state, the display module  211  may display visual information to the user by being visually exposed to the outside. Conversely, in the folded state, the display module  211  may not be visible via the fourth surface  225  so as not to be visually exposed to the outside. 
     In an embodiment, the display module  211  may control the screen (e.g., display screen) to be turned on and off according to the unfolded state or the folded state of the electronic device  201  and/or the display module  211 . For example, the display module  211  may control the screen to be turned off in the folded state to prevent unnecessary power consumption. Furthermore, the display module  211  may control a screen display direction according to a driving mode of the electronic device  201 . That is, the screen of the display module  211  may be controlled together with unfolding and folding of the of the electronic device  201  and/or the display module  211 . In an embodiment, the screen of the display module  211  may be automatically turned off and/or turned on by a state of the electronic device  201  and/or the display module  211  (e.g., folding and unfolding). 
     In an embodiment, the electronic device  201  may set a region connected to the second housing  220  as a lower part and display the screen based on an up direction (e.g., +Z direction) and a down direction (e.g., -Z direction). For example, in the tablet mode, the electronic device  201  may use a gyro sensor (not illustrated) of a sensor module (e.g., the sensor module  176  of  FIG.  1   ) to detect the user’s usage environment and the display module  211  may re-set the up and down directions based on the detected user’s usage environment. 
     In an embodiment, a camera module  216  (e.g., the camera module  180  of  FIG.  1   ) and a sensor module  217  (e.g., the sensor module  176  of  FIG.  1   ) may be disposed in a space provided by the first housing  210 , and at least a part of the regions of the camera module  216   and the sensor module  217  may be visually exposed via the first surface  215  of the first housing  210 . 
     For example, the camera module  216  and the sensor module  217  may be visually exposed, together with the display module  211 , to the user in the unfolded state of the first housing  210  and the second housing  220  and may not be visible from the electronic device  201  in the folded state in which the first surface  215  of the first housing  210  and the fourth surface  225  of the second housing  220  face each other. 
     In an embodiment, a microphone and a sensor device may be disposed in a space provided by the first housing  210 . For example, a dual microphone may be disposed in the space provided by the first housing  210 . For example, the sensor device may include a proximity sensor, a time of flight (TOF) sensor, or a light detection and ranging (LiDAR) sensor for identifying a position of the user. 
       FIG.  3    is a perspective view illustrating the hinge unit  310  according to an embodiment. 
     Referring to  FIG.  3   , the hinge unit  310  according to various embodiments may include a pair of plates  313  and  314 , a pair of hinge axes  311  and  312 , a plurality of gears  315  and  317 , and the driving module  350 . 
     In an embodiment, the pair of plates  313  and  314  may include a first plate  313  connected to the first housing  210  and a second plate  314  connected to the second housing  220 , and the pair of hinge axes  311  and  312  may include a first hinge axis  311  connected to the first housing  210  and a second hinge axis  312  connected to the second housing  220 . 
     For example, the first plate  313  may rotate (e.g., be rotatable) based on the first hinge axis  311  and the second plate  314  may rotate based on the second hinge axis  312 . Each of the first plate  313  and the second plate  314  may rotate by interoperating with a hinge gear  315 . 
     In an embodiment, the driving module  350  may open and close a first door (e.g., the first door  301  of  FIG.  2 B ) and a second door (e.g., the second door  302  of  FIG.  2 A ) by interoperating with the hinge unit  310 . In an embodiment, the respective doors of the electronic device  201  may be automatically (or simultaneously) opened or closed by a state of the electronic device  201  and/or the display module  211  (e.g., folding and unfolding). The driving module  350  may be connected to the hinge unit  310  via an intermediate gear  317  of the hinge unit  310 . In various embodiments, the driving module  350  may be inside the second housing  220 , which includes the plurality of doors  301  and  302 , and may open and close the plurality of doors  301  and  302  by interoperating with the hinge unit  310 . In an embodiment, the driving module  350  may be moveable together with rotation of the second housing  220  with respect to the first housing  210 , to open and close the first door  301  and the second door  302 . Here, the rotation angle which is less than a first angle may open the first door  301 , and the rotation angle which is greater than a second angle may open the second door. 
     In an embodiment, the driving module  350  may include a first gear  351  and a second gear  352  that rotate by interoperating with the intermediate gear  317  of the hinge unit  310 . 
     In an embodiment, the first gear  351  may rotate by engaging with the second gear  352  and may be connected to a first shaft  353 . The first shaft  353  may extend in one direction (e.g., +X direction) from the rotation axis of the first gear  351  and may include a first shaft arm  356 . The first shaft  353  (and the first shaft arm  356 ) may rotate about the rotation axis, together with rotation of the first gear  351 . In an embodiment, a respective gear may be rotatable by interoperating with the hinge unit  310 , a respective shaft may include a shaft arm offset from a rotation axis of the gear, and a respective support member may include a slot along which the shaft arm moves together with rotation of the gear, where the support member may be connected to the first door  301  and the second door  302 . 
     In an embodiment, the second gear  352  may rotate by engaging with the intermediate gear  317  and may be connected to a second shaft  354 . The second shaft  354  may extend in one direction (e.g., +X direction) from the rotation axis of the second gear  352  and may include a second shaft arm  357 . 
     In an embodiment, a gear ratio of at least some of the first gear  351  and the second gear  352  may differ from a gear ratio of the hinge gear  315 , and a rotation angle of at least one of the first gear  351  and the second gear  352  may differ from a rotation angle of the hinge gear  315 . For example, if the rotation angle between the first gear  351  and the second gear  352  is less than the rotation angle of the hinge gear  315 , the electronic device  201  may implement a structure in which the plurality of doors  301  and  302  is interoperated to be opened and closed in a limited internal space of the second housing  220 . In various embodiments, the gear ratios of the first gear  351  and the second gear  352  may differ from one another. 
     The hinge unit  310  and the driving module  350  illustrated in  FIG.  3    may be illustrations for describing the hinge unit  310  that opens and closes the plurality of doors  301  and  302  by interoperating with a rotation of the first housing  210  and the second housing  220 . However, the structure of the hinge unit  310  and the driving module  350  is not limited thereto in the implementation, and the hinge unit  310  and the driving module  350  may be implemented in various structures. 
     For example, the driving module  350  according to another embodiment may include a single gear (not illustrated) connected to the plurality of shaft arms  356  and  357 , and the plurality of shaft arms  356  and  357  may engage with the plurality of doors  301  and  302  to open and close the plurality of doors  301  and  302  based on a rotation of the single gear (not illustrated). 
     The driving module  350  according to another embodiment may include a cam member (not illustrated) that opens and closes the plurality of doors  301  and  302 , and the cam member (not illustrated) may open and close the plurality of doors  301  and  302  while moving in a vertical direction (e.g., +/-Z direction) by interoperating with the rotation of the hinge unit  310 . 
     The driving module  350  according to another embodiment may include a power device (not illustrated), such as a motor, and the power device (not illustrated) may open and close the plurality of doors  301  and  302 . The driving module  350  according to an embodiment may be controlled by electrical connection to the processor (e.g., the processor  120  of  FIG.  1   ) or a memory (e.g., the memory  130  of  FIG.  1   ). 
     The driving module  350  according to another embodiment may include an elastic member (not illustrated), and the driving module  350  may open and close the plurality of doors  301  and  302  by controlling an elastic force and an elastic direction of the elastic member (not illustrated). 
     The driving module  350  according to another embodiment may include a magnetic body (not illustrated) comprising magnetic force, or an electromagnetic unit (not illustrated) generating electromagnetic force. The magnetic body (not illustrated) or the electromagnetic unit (not illustrated) may be controlled by the hinge unit  310  or the processor and may open and close the plurality of doors  301  and  302  comprising magnetism by pushing or pulling the plurality of doors  301  and  302 . 
     In various embodiments, other than the structures of the driving module  350  described above, the driving module  350  according to various embodiments of the disclosure may be implemented in various structures in which the plurality of doors  301  and  302  is opened and closed in response to a rotation angle θ of a housing, and other configurations of the driving module  350  may be added or changed within a range that can be easily derived or modified by those skilled in the art. 
       FIGS.  4 A through  4 E  illustrate various states of the electronic device  201  according to an embodiment. 
     Referring to  FIGS.  4 A through  4 E , the electronic device  201  according to various embodiments may transform into a plurality of states A1, A2, A3, A4, and A5 based on the rotation angle θ between the first housing  210  and the second housing  220 , and the plurality of doors  301  and  302  may be open and closed based on the plurality of states A1, A2, A3, A4, and A5 of the electronic device  201 . 
     In an embodiment, the electronic device  201  may open and close the first door  301  and the second door  302  by interoperating with the rotation angle θ, which is an angle between the first housing  210  and the second housing  220 . For example, the rotation angle θ may be an angle at which a virtual surface substantially parallel to one surface (e.g., the first surface  215  or the second surface  218 ) of the first housing  210  is formed, based on a virtual surface substantially parallel to one surface (e.g., the third surface  228  or the fourth surface  225 ) of the second housing  220 . Alternatively, the rotation angle θ may be an angle formed between the first housing  210  and the second housing  220 , based on the hinge unit  310 . 
     In an embodiment, the first door  301  may be connected to a first support member  361  and the second door  302  may be connected to a second support member  362 . The first support member  361  and the second support member  362  may be an element of a driving module (e.g., the driving module  350  of  FIG.  3   ). The first support member  361  and the second support member  362  may be pressed or engaged by interoperating with the rotation of the hinge unit  310  and may open and close the first door  301  and/or the second door  302 . An embodiment of specific driving of the first support member  361  and the second support member  362  is described in detail starting with reference to  FIG.  5 A  and thereafter. 
     In an embodiment, referring to  FIG.  4 A , a first state A1 of the electronic device  201  may be a state in which the first surface  215  of the first housing  210  and the fourth surface  225  of the second housing  220  face each other. In an embodiment, a state in which the rotation angle θ of the electronic device  201  is a start angle (e.g., 0 degrees) may be the first state A1. The first state A1 may be a folded state (e.g., completely folded or in folded) of the electronic device  201  or may be a state in which the display module  211  and the input device  221  of the electronic device  201  are not visible. In an embodiment, the first state A1 may be a state in which the driving of all or a part of the electronic device  201  has temporarily stopped or finished or may be a state in which power consumption is minimized. In the first state A1, the pair of plates (e.g., the pair of plates  313  and  314  of  FIG.  3   ) of the hinge unit  310  may be substantially parallel to each other and the first door  301  and the second door  302  may be in a closed state. As being in a closed state, a respective door may be coplanar with an outer surface of the electronic device  201 , without being limited thereto. 
     In an embodiment, referring to  FIG.  4 B , a second state A2 of the electronic device  201  may be a state in which the rotation angle θ is between the start angle (e.g., 0 degrees) and an intermediate angle (e.g., 180 degrees) or may be a state in which the first surface  215  of the first housing  210  and the fourth surface  225  of the second housing  220  are substantially perpendicular or adjacent thereto. For example, the second state A2 of the electronic device  201  may be an unfolded state in a clamshell mode. In an embodiment, the second state A2 may be a state in which the electronic device  201  is on an external support (not illustrated) or may be, for example, a state in which the third surface  228  of the electronic device  201  is supported on a top surface of an external support (not illustrated), such as a desk or a table. In an embodiment, the electronic device  201  which is supported by an external support, may dispose a surface (e.g., rear surface opposite to the front surface) facing the external support, and movement of the driving module  350  may dispose the first door  301  protruded out of the second housing  220  and contacting the external support. 
     In an embodiment, in the electronic device  201  that is in the second state A2, the first door  301  may be open. The first door  301  may be open and spaced apart from the third surface  228  of the second housing  220 , and via the first door  301  which is open, external air may be introduced into the second housing  220 , or internal air may discharge to the outside. For example, the first door  301  may be open in the clamshell mode and form a cooling path of a component of the electronic device  201 , which is inside the second housing  220 . 
     In an embodiment, referring to  FIG.  4 C , a third state A3 of the electronic device  201  may be an unfolded state in a horizontal mode (e.g., flat). For example, the third state A3 of the electronic device  201  may be a state in which the rotation angle θ is an intermediate angle (e.g., 180 degrees) or adjacent thereto, or may be a state in which the first surface  215  of the first housing  210  and the fourth surface  225  of the second housing  220  are substantially horizontal or adjacent thereto. As being ‘adjacent to,’ an element may be close or substantially equal to a value, etc., without being limited thereto. In an embodiment, the first surface  215  of the first housing  210  and the fourth surface  225  of the second housing  220  may be coplanar with each other. In an embodiment, the third state A3 may be a state in which the electronic device  201  is on the external support (not illustrated) or may be, for example, a state in which the second surface  218  and the third surface  228  of the electronic device  201  are supported on the top surface of an external support (not illustrated), such as a desk or a table. 
     In an embodiment, in the electronic device  201  that is in the third state A3, the first door  301  may be open. The electronic device  201  that is in the third state A3 may be in a state in which the unfolded state of the first door  301  (e.g., open state of the first door  301 ) is maintained as the rotation angle θ increases. The third state A3 may include the first door  301  is a maximally open state, such as being maximum at the intermediate angle (e.g.,  180  degrees). Alternatively, the electronic device  201  that is in the third state A3 may be in a state in which the first door  301  is opened as the rotation angle θ decreases from the electronic device  201  that is in a fourth state A4. Although not illustrated, in various embodiments, the degree of the opening of the first door  301  of the electronic device  201  may change as the rotation angle θ between the second state A2 and the third state A3 changes. That is, the first door  301  which is open may expose the inside of the second housing  220  to outside the electronic device  201 . 
     In an embodiment, referring to  FIG.  4 D , the fourth state A4 of the electronic device  201  may be a state in which the second surface  218  of the first housing  210  and the third surface  228  of the second housing  220  are close to each other (or closest to each other with a minimal internal angle therebetween). In an embodiment, the fourth state A4 of the electronic device  201  may be a state in which the rotation angle θ is between the intermediate angle (e.g.,  180  degrees) and a set angle (e.g., 270 degrees) or may be a state in which the second surface  218  of the first housing  210  and the third surface  228  of the second housing  220  are substantially vertical or adjacent thereto. For example, the fourth state A4 may be an intermediate stage in which the electronic device  201  changes from the clamshell mode to the tablet mode. 
     The fourth state A4 may be a stage in which both the first door  301  and the second door  302  are closed as the rotation angle θ changes from a previous state (e.g., the third state A3 or a fifth state A5). Although  FIG.  4 D  illustrates that the first door  301  and the second door  302  are both in a closed state, an embodiment is not limited thereto and at least one of the first door  301  and the second door  302  may be open or the doors  301  and  302  may be both open. 
     In an embodiment, referring to  FIG.  4 E , the fifth state A5 of the electronic device  201  may be a state in which the rotation angle θ is within the end angle (e.g., 360 degrees) or may be a state in which the first surface  215  of the first housing  210  and the fourth surface  225  of the second housing  220  are substantially parallel or adjacent thereto (e.g., completely outfolded). For example, the fifth state A5 of the electronic device  201  may be a state in the tablet mode. In an embodiment, the fifth state A5 may be a state in which the electronic device  201  is on an external support (not illustrated) or may be, for example, a state in which the fourth surface  225  of the electronic device  201  is supported on the top surface of the external support (not illustrated), such as a desk or a table. 
     In an embodiment, in the electronic device  201  that is in the fifth state A5, the second door  302  may be open. The second door  302  may be open and spaced apart from the fourth surface  225  of the second housing  220 , and via the second door  302 , external air may be introduced into the second housing  220  or internal air may discharge to the outside. For example, the second door  302  may be open in the tablet mode to form a cooling path of a component of the electronic device  201 , which is inside the second housing  220 . That is, the second door  302  which is open may expose the inside of the second housing  220  to outside the electronic device  201 . 
     For example, the electronic device  201  needs to form a separate fluid path (not illustrated) or a cooling means for discharging heat in a direction of the fourth surface  225  in the tablet mode, and the width of the second housing  220  may increase. For example, since the tablet mode is in a state in which rear surfaces of the first housing  210  and the second housing  220  substantially contact each other, the electronic device  201  may overheat compared to other states. The electronic device  201  according to various embodiments of the disclosure may control the second door  302  to effectively dissipate heat from a front of the electronic device  201  in various rotation ranges of the first housing  210  and the second housing  220 . In addition, the electronic device  201  may be designed to be slim to secure portability. 
     For example, the second door  302  may supplement a structure in which the first door  301  is closed in the tablet mode of the electronic device  201 . In the tablet mode, the display module  211  and the input device  221  may be in opposite directions and the user may mainly use the electronic device  201  in a direction facing the display module  211 . In this case, the first door  301  on the third surface  228  of the second housing  220  may be closed by the first housing  210 , and accordingly, the second door  302  may be open and discharge heat from an internal component of the second housing  220  to the outside. In various embodiments, the fifth state A5 may limit power supply such that the driving of the input device  221  of the electronic device  201  is limited or may restrict an input recognition of the input device  221  in a process manner. 
     In various embodiments, the driving module  350  may open and close the first door  301  and the second door  302  by pressing a first support member (e.g., the first support member  361   of  FIG.  5 A ) and a second support member (e.g., the second support member  362  of  FIG.  5 B ). For example, when the rotation angle θ is less than a set first angle (e.g., a first reference angle), the driving module  350  may press the first support member  361  to open the first door  301 , and when the rotation angle θ is greater than a set second angle (e.g., a second reference angle), the driving module  350  may press the second support member  362  to open the second door  302 . A structure and an operation of the first support member  361  and the second support member  362  are described with reference to  FIG.  5 A  and thereafter. 
     In an embodiment, in a state (e.g., the second state A2 or the third state A3) in which the rotation angle is less than the first angle (e.g., 270 degrees), the driving module  350  may open the first door  301 . For example, the first angle may be an angle at which the electronic device  201  is in the clamshell mode or may be an angle of a state in which the tablet mode is excluded from the unfolded state (e.g., except for the unfolded state). For example, the first angle may be a predetermined angle set to a range less than 180 degrees or 270 degrees. 
     In an embodiment, in a state (e.g., the fifth state A5) in which the rotation angle is greater than the second angle (e.g., 270 degrees), the driving module  350  may open the second door  302 . For example, the second angle may be an angle at which the electronic device  201  is in the tablet mode or may be an angle of a state in which the clamshell mode is excluded from the unfolded state. For example, the second angle may be a predetermined angle set to a range less than 270 degrees. 
     In various embodiments, the driving module  350  may selectively open the plurality of doors  301  and  302 , based on the rotation angle θ of the electronic device  201 , and may form a fluid path for dissipating heat from the electronic device  201  considering the usage environment of the electronic device  201 . 
     For example, a plurality of components controlling the driving of the electronic device  201  may be inside the second housing  220 , and as the electronic device  201  is driven, the inside of the second housing  220  may overheat. When the internal temperature of a housing increases, the internal components of the electronic device  201  may be damaged or performance of the electronic device  201  deteriorates, which may inconvenience the user and accordingly, cooling means may be required. 
     In various embodiments, the second housing  220  may include a heat dissipating module (not illustrated), such as a heat plate (not illustrated), a heat pipe (not illustrated), or a vacuum chamber (not illustrated). The heat dissipating module (not illustrated) may disperse heat from a component generating a large amount of heat among the internal components of the electronic device  201 . The heat dissipating module (not illustrated) according to various embodiments may require a predetermined amount of installation area inside the second housing  220  to discharge heat from a predetermined component. 
     In various embodiments, the second housing  220  may include a fan (not illustrated) and a cooling path (not illustrated). The cooling path (not illustrated) may communicate from the inside of the electronic device  201  to the outside to discharge hot air from the inside of the electronic device  201  to the outside and to introduce cool air from the outside into the inside of the electronic device  201 . The cooling path (not illustrated) may be provided as an empty space inside the second housing  220 . 
     Although the heat dissipating module (not illustrated) and the cooling path (not illustrated) may be installed in the electronic device  201  according to various embodiments, spaces for them need to be provided and the size of the electronic device  201  increases, which may cause low portability. 
     In the electronic device  201  according to an embodiment, the first door  301  or the second door  302  may be open in some states (e.g., the second state A2, the third state A3, or the fifth state A5) in which the electronic device  201  is actively driven, the inside of the second housing  220  may be in fluid communication with the outside of the second housing  220  via the plurality of doors  301  and  302 , and heat may dissipate from the internal components. The plurality of doors  301  and  302  may interoperate with the driving of the hinge unit  310  to be opened and closed automatically, and the first door  301  and the second door  302  may be open and closed considering the driving state of the electronic device  201 . 
     The electronic device  201  according to various embodiments of the disclosure may reduce an additional component for heat dissipation, the portability may improve through an implementation of the electronic device  201  to be slim, a heat dissipation performance of the electronic device  201  may improve, and the internal components may be effectively cooled. 
     Referring to  FIG.  4 D , the first angle may be substantially the same as the second angle (e.g., 270 degrees) and the driving module  350  may close the first door  301  and the second door  302  when the rotation angle θ is the first angle (or the second angle). For example, the fourth state A4 may be a state in which the electronic device  201  is used in the clamshell mode and the tablet mode at the same time. The fourth state A4 may be a state in which the plurality of doors  301  and  302  is closed and the heat dissipation performance deteriorates, and a system of the electronic device  201  may inform the user of the state. 
     In an embodiment, the first angle may be less than the second angle. The driving module  350  may close the second door  302  when the rotation angle θ is less than the first angle and may close the first door  301  when the rotation angle θ is greater than the second angle. For example, in a state less than the first angle, the first door  301  may be opened and the second door  302  may be closed and in a state greater than the second angle, the first door  301  may be closed and the second door  302  may be opened. 
     In an embodiment, although not illustrated, the driving module  350  may open both of the first door  301  and the second door  302  at an angle between the first angle and the second angle. A state in which the first door  301  and the second door  302  are both opened may be, for example, a state in which the first door  301  and the second door  302  are both opened in the fourth state A4 of  FIG.  4 D . For example, the electronic device  201  may open both of the doors  301  and  302  in the intermediate stage between the clamshell mode and the tablet mode to maximize the heat dissipation performance. In another embodiment, as illustrated in  FIG.  4 D , the driving module  350  may close both of the first door  301  and the second door  302  at an angle between the first angle and the second angle. In this case, the electronic device  201  may be in the intermediate state between the clamshell mode and the tablet mode. 
     In an embodiment, as illustrated in  FIGS.  4 A through  4 E , the hinge unit  310  may rotate the first housing  210  and the second housing  220  in a range from the start angle (e.g., 0 degrees) at which the second surface  218  and the first door  301  face each other to the end angle (e.g., 360 degrees) at which the first surface  215  and the second door  302  face each other. For example, the electronic device  201  of which a housing is rotatable by 360 degrees may be a convertible PC. 
     For example, the first state A1 may be a state of the start angle and the driving module  350  may be in the folded state in which the first door  301  and the second door  302  both are closed. For example, the fifth state A5 may be a state of the end angle and the driving module  350  may be in a driving state in the tablet mode in which the first door  301  is closed and the second door  302  is open. 
     In another embodiment, the end angle of the electronic device  201  may be an angle between 90 degrees and 270 degrees and may be 180 degrees. In this case, the electronic device  201  may be used in the clamshell mode and the first door  301  and the second door  302  may be alternately opened and closed to dissipate heat from the electronic device  201 . 
     The driving module  350  according to an embodiment may open and close the first door  301  and the second door  302  such that the first door  301  and the second door  302  are alternately opened as the rotation angle θ increases or decreases. For example, as the rotation angle θ increases, the driving module  350  may open the first door  301  in some regions (e.g., a region between the first state A1 and the fourth state A4) and may open the second door  302  in the other regions (e.g., a region between the fourth state A4 and the fifth state A5). In various embodiments, when the first angle and the second angle are substantially the same or similar, the second door  302  may be opened after the first door  301  is closed, or the first door  301  may be opened after the second door  302  is closed. For example, the first door  301  and the second door  302  of the electronic device  201  may be alternately opened. 
       FIG.  5 A  is a side view illustrating the hinge unit  310  and the first door  301  according to an embodiment, and  FIG.  5 B  is a side view illustrating the hinge unit  310  and the second door  302  according to an embodiment. For convenience of illustration, the view of  FIG.  5 A  omits the second support member  362  which is in front of the first support member  361  in the +Z direction, and the view of  FIG.  5 B  omits the first support member  361  which is behind the second support member  362  in the -Z direction. 
     Referring to  FIGS.  5 A and  5 B , the electronic device  201  according to various embodiments may include the first support member  361 , the second support member  362 , a first slot  363 , and a second slot  364 . 
     When describing the electronic device  201  with reference to  FIG.  5 A  and thereafter, repeated descriptions already provided above of the electronic device  201 , the hinge unit  310 , and the driving module  350  are omitted, and an opening and closing structure of the first door  301  and the second door  302  is described. 
     In an embodiment, the support members  361  and  362  may be respectively connected to the first door  301  and the second door  302  and may include the slots  363  and  364  that respectively are paths along which a shaft arm moves by interoperating with a rotation of a respective shaft. For example, the first support member  361  may include the first slot  363  in which (or along which) the first shaft arm  356  moves and the second support member  362  may include the second slot  364  in which (or along which) the second shaft arm  357  moves. That is, a shaft arm may be movable along a respective slot. 
     In an embodiment, in the driving module  350 , the shaft arms  356  and  357  may press or be engaged with the slots  363  and  364  by interoperating with the rotation of the shafts  353  and  354  to push the support members  361  and  362  (e.g., apply a force to a respective support member). However, the driving module  350  is not limited thereto, and the driving module  350  according to various embodiments may open and close the first door  301  and the second door  302  based on a position of a shaft arm within a slot. 
     In an embodiment, the electronic device  201  may be used by being supported by an external support (not illustrated). The third surface  228  of the second housing  220  may contact the external support (not illustrated), and the first door  301  may be supported in a direction facing the external support (not illustrated). The driving module  350  may open the first door  301  by pushing the first door  301  in an outer direction (e.g., -Z direction) of the second housing  220 . In an embodiment, the pushing of the first door  301  in an outer direction (e.g., -Z direction) may provide a force in a +Z direction to essentially lift portions of the electronic device  201  and separate a portion of the third surface  228  from the external support to provide an open heat flow path. In an embodiment, in the electronic device  201 , air may enter into and exit from a clearance between the first door  301  and the second housing  220  formed when the first door  301  is open and the electronic device  201  may discharge the heat from the internal components. 
     In an embodiment, the second housing  220  may include the input device  221  provided on the fourth surface  225  and the second door  302  may be connected to the input device  221 . In the tablet mode, the input device  221  may be in a direction opposite to the display module  211  and the driving of the input device  221  may be stopped or limited. The driving module  350  may open and close the second door  302  by pushing the second door  302  and the input device  221  together with the second door  302 , from the second housing  220 . 
     Hereinafter, a structure is described in detail in which the shaft arms  356  and  357  of the driving module  350  push against the support members  361  and  362  at the respective slots, and the support members  361  and  362  respectively support the first door  301  and the second door  302  such that the driving module  350  opens and closes the first door  301  and the second door  302  based on the rotation of the shafts  353  and  354 . Where the support members  361  and  362  respectively support the first door  301  and the second door  302 , a respective door may be movable together with movement of a respective support member. However, the structure is not limited thereto in the implementation, and the driving module  350  may open and close the first door  301  and the second door  302  in various manners. 
     In an embodiment, the driving module  350  may include the first gear  351  and the first shaft arm  356  which is connected to the first gear  351  via the first shaft  353 , where the first gear  351  rotates in one direction by interoperating with the hinge unit  310 . The driving module  350  may include the second gear  352  and the second shaft arm  357  which is connected to the second gear  352  via the second shaft  354 , where the second gear  352  rotates in a direction opposite to the first gear  351  by interoperating with the hinge unit  310 . In various embodiments, the first shaft arm  356  and the second shaft arm  357  of the driving module  350  may move by interoperating with the hinge unit  310  and may open and close the first door  301  and the second door  302  by pushing the first support member  361  and the second support member  362  respectively connected to the first door  301  and the second door  302 . 
     In an embodiment, the first shaft arm  356  may move in the first slot  363  according to the rotation of the first gear  351  and press the first support member  361  at a predetermined position. The first support member  361  may be fixed at the first door  301  and may move in a direction (e.g., +/-Z direction) by movement of the first shaft arm  356  along the first slot  363 . The first support member  361  may open the first door  301  by pushing the first door  301  in a down direction (e.g., -Z direction) from the second housing  220 . That is, the first door  301  is movable relative to the second housing  220 , to be protruded therefrom and disposed outside of the second housing  220 . 
     Rotation of (or angle between) the first housing  210  relative to the second housing  220  may correspond to various positions along the first slot  363 . In an embodiment, the first housing  210  and the second housing  220  may rotate from a first position θ 1  corresponding to the start angle to a sixth position θ 6  corresponding to the end angle. That is, the first housing  210  and the second housing  220  may rotate from the start angle corresponding to a first position θ 1  along the first slot  363 , to the end angle corresponding a sixth position θ 6  along the first slot  363 . The first slot  363  may include a first start region P 1  in which the first shaft arm  356  is at the first position θ 1  to a first end region P 2  in which the first shaft arm  356  is at the sixth position θ 6 . In an embodiment, the fourth position θ 4  may be substantially the same position as or a mutually adjacent position to the fifth position θ 5  may be substantially the same position or mutually adjacent positions. 
     In an embodiment, the first slot  363  may define different movement directions of the first shaft arm  356  among paths in which the first shaft arm  356  moves from the first start region P 1  to the first end region P 2  and may include inflection regions V 1-1 , V 1-2 , and V 1-3  in which the rotation angle θ of the electronic device  201  corresponds to a second position θ 2 , a third position θ 3 , and a fourth position θ 4 , respectively. At a respective inflection region, a direction of the first slot  363  changes to a different direction. A structure in which the first door  301  is opened and closed while the first shaft arm  356  moves in the first slot  363  is described in detail with reference to  FIGS.  6 A through  6 E . 
     In an embodiment, the second shaft arm  357  may move in the second slot  364  according to the rotation of the second gear  352  and press the second support member  362  at a predetermined position. The second support member  362  may be fixed at the second door  302  and may move in a direction (e.g., +/-Z direction) being pressed. The second support member  362  may open the second door  302  by pushing the second door  302  in an up direction (e.g., +Z direction) from the second housing  220 . 
     In an embodiment, the first housing  210  and the second housing  220  may rotate from a seventh position θ 7  at which the rotation angle θ is the start angle to a ninth position θ 9  at which the rotation angle θ is the end angle. That is, the first housing  210  and the second housing  220  may rotate from the start angle corresponding to a seventh position θ 7  along the second slot  364 , to the end angle corresponding a ninth position θ 9  along the second slot  364 . The second slot  364  may include a second start region P 3  in which the second shaft arm  357  is at the seventh position θ 7  to a second end region P 4  in which the second shaft arm  357  is at the ninth position θ 9  and may include a second inflection region V 2  that changes a movement direction of the second shaft arm  357  among paths in which the second shaft arm  357  moves from the second start region P 3  to the second end region P 4 . A structure in which the second door  302  is opened and closed while the second shaft arm  357  moves in the second slot  364  is described in detail with reference to  FIGS.  7 A through  7 C . 
     In various embodiments,  FIGS.  5 A and  5 B  illustrate an embodiment for describing an opening and closing structure of the electronic device  201  according to various embodiments of the disclosure. Via a structure design of the first slot  363  and the second slot  364 , an angle between the first housing  210  and the second housing  220  for the driving module  350  to open and close the first door  301  and the second  302  may be variously combined. 
       FIGS.  6 A through  6 E  illustrate various states of the electronic device  201  according to an embodiment. For convenience of illustration, the views of  FIGS.  6 A through  6 E  omit the second support member  362  which is in front of the first support member  361  in the +Z direction. 
     Referring to  FIGS.  6 A through  6 E , the electronic device  201  according to various embodiments may transform into a plurality of states S 1 , S 2 , S 3 , S 4 , and S 5 , based on a rotation angle θ between the first housing  210  and the second housing  220 , and the first door  301  may be opened and closed based on the plurality of states S 1 , S 2 , S 3 , S 4 , and S 5  of the electronic device  201 . In various embodiments, each of the plurality of states S 1 , S 2 , S 3 , S 4 , and S 5  of the electronic device  201  of  FIGS.  6 A through  6 E  may be a state corresponding to each of the plurality of states A1, A2, A3, A4, and A5 of the electronic device  201  of  FIGS.  4 A through  4 E , but is not limited thereto, and each of the plurality of states S 1 , S 2 , S 3 , S 4 , and S 5  may differ from each of the plurality of states A1, A2, A3, A4, and A5. 
     In various embodiments, the first state S 1  may be a folded state of the electronic device  201  and may be a state in which the display module  211  and the input device  221  of the electronic device  201  are not visible. For example, the first state S 1  through the third state S 3  may be states in which the electronic device  201  is used in the clamshell mode and the fourth state S 4  and the fifth state S 5  may be states in which the electronic device  201  is used in the tablet mode. 
     Referring to  FIG.  5 A  when describing the plurality of states S 1 , S 2 , S 3 , S 4 , and S 5 , the first state S 1  may be a state in which the rotation angle θ is at the first position θ 1 , the second state S 2  may be a state in which the rotation angle θ is at the second position θ 2 , the third state S 3  may be a state in which the rotation angle θ is at the third position θ 3 , the fourth state S 4  may be a state in which the rotation angle θ is at the fourth position θ 4  or the fifth position θ 5 , and the fifth state S 5  may be a state in which the rotation angle θ is at the sixth position θ 6 . 
     In an embodiment, referring to  FIGS.  6 A and  6 B , the electronic device  201  which defines the rotation angle θ between the first position θ 1  and the second position θ 2  may open and close the first door  301 . The first shaft arm  356  may move between the first start region P 1  and a 1-1 inflection region V 1-1  and for example, the first shaft arm  356  may open the first door  301  by interoperating with the first slot  363 , while moving from the first start region P 1  and the 1-1 inflection region V 1-1 . As shown in  FIG.  6 A , the electronic device  201  which defines the rotation angle θ at substantially the first position θ 1  may dispose the first door  301  coplanar with an outer surface of the second housing  220  (e.g., the third surface  228 ). Taking  FIGS.  6 A and  6 B  together, the electronic device  201  which defines the rotation angle θ between the first position θ 1  and the second position θ 2  may dispose the first door  301  protruding out of the second housing  220  to extend further than the outer surface of the second housing  220 . That is, the first door  310  is movable together with the first shaft arm  356  along the first slot  363 . 
     In an embodiment, referring to  FIGS.  6 B and  6 C , the electronic device  201  may maintain an unfolded state of the first door  301  between the second position θ 2  and the third position θ 3 . The first shaft arm  356  may move between the 1-1 inflection region V 1-1  and a 1-2 inflection region V 1-2  and support the first door  301  in the open state. A path of the first slot  363  from the 1-1 inflection region V 1-1  to the 1-2 inflection region V 1-2  may be substantially the same as a rotation path of the first shaft  353 . Since the path of the first slot  363  from the 1-1 inflection region V 1 - 1  to the 1-2 inflection region V 1 - 2  may be substantially the same as a rotation path of the first shaft  353 , the electronic device  201  which defines the rotation angle θ between the second position θ2 and the third position θ3 may dispose the first door  301  protruded at a same distance from the outer surface of the second housing  220 , without being limited thereto. 
     In an embodiment, referring to  FIGS.  6 C and  6 D , the electronic device  201  may open and close the first door  301  between the third position θ 3  and the fourth position θ 4 . The first shaft arm  356  may move between the 1-2 inflection region V 1-2  and a 1-3 inflection region V 1-   3  and for example, the first shaft arm  356  may close the first door  301  by interoperating with the first slot  363 , while moving from the 1-2 inflection region V 1-2  to the 1-3 inflection region V 1-3 , or may open the first door  301  by interoperating with the first slot  363 , while moving from the 1-3 inflection region V 1-3  to the 1-2 inflection region V 1-2 . 
     In an embodiment, referring to  FIGS.  6 D and  6 E , the electronic device  201  may maintain the folded state of the first door  301  (e.g., closed state) between the fifth position θ 5  and the sixth position θ 6 . In an embodiment, the fourth position θ 4  and the fifth position θ 5  may be mutually adjacent positions, or substantially the same position. The first shaft arm  356  may move between the 1-3 inflection region V 1-3  and the first end region P 2  and support the first door  301 . A path of the first slot  363  from the 1-3 inflection region V 1-3  to the first end region P 2  may be the same as the rotation path of the first shaft  353 . 
     In an embodiment, the fourth state S 4  of the electronic device  201  may be a state in which the rotation angle θ of the electronic device  201  is adjacent to the set first angle. From the fourth state S 4  to the third state S 3 , the rotation angle θ of the electronic device  201  may decrease and the driving module  350  may open the first door  301 . 
       FIGS.  7 A through  7 C  illustrate various states of the electronic device  201  according to an embodiment. The views in  FIGS.  7 A through  7 C  show portions of the first support member  361  which is behind the second support member  362  in the -Z direction. 
     Referring to  FIGS.  7 A through  7 C , the electronic device  201  according to various embodiments may transform into a plurality of states S 6 , S 7 , and S 8 , based on a rotation angle θ between the first housing  210  and the second housing  220 , and the second door  302  may be opened and closed based on the plurality of states S 6 , S 7 , and S 8  of the electronic device  201 . In various embodiments, each of the plurality of states S 6 , S 7 , and S 8  of the electronic device  201  of  FIGS.  7 A through  7 C  may be a state corresponding to each of the plurality of states A1, A4 and A5 of the electronic device  201  of  FIGS.  4 A,  4 D and  4 E , or corresponding to each of the plurality of states S 1 , S 4  and S 5  of the electronic device  201  of  FIGS.  6 A,  6 D and  6 E , but is not limited thereto. In an embodiment, each of the plurality of states S 6 , S 7 , and S 8  may differ from each of the plurality of states A1, A4 and A5, or each of the plurality of states S 1 , S 4  and S 5 . 
     In various embodiments, the sixth state S 6  may be the folded state of the electronic device  201  and may be the state in which the display module  211  and the input device  221  of the electronic device  201  are not visible. The input device  221  may be coplanar with the second housing  220 , without being limited thereto. For example, at least some sections between the seventh state S 7  and the eighth state S 8  may be states in which the electronic device  201  is used in the clamshell mode and the eighth state S 8  may be a state in which the electronic device  201  is used in the tablet mode. 
     Referring to  FIG.  5 B  when describing the plurality of states S 7 , S 8  and S9, the sixth state S 6  may be a state in which the rotation angle θ is at the seventh position θ 7 , the seventh state S 7  may be a state in which the rotation angle θ is at the eighth position θ 8 , and the eighth state S 8  may be a state in which the rotation angle θ is at the ninth position θ 9 . 
     In an embodiment, referring to  FIGS.  7 A and  7 B , the electronic device  201  may maintain a folded state of the second door  302  (e.g., closed state) when the rotation angle θ is between the seventh position θ 7  and the eighth position θ 8 . The second shaft arm  357  may move between the second start region P 3  and the second inflection region V 2  and support the second door  302 . A path of the second slot  364  from the second start region P 3  to the second inflection region V 2  may be the same as a rotation path of the second shaft  354 . 
     In an embodiment, referring to  FIGS.  7 B and  7 C , the electronic device  201  may open and close the second door  302  when the rotation angle θ is between the eighth position θ 8  and the ninth position θ 9 . The second shaft arm  357  may move between the second inflection region V 2  and the second end region P 4  and for example, the second shaft arm  357  may open the second door  302  by interoperating with the second slot  364 , while moving from the second inflection region V 2  to the second end region P 4 . Alternatively, the second shaft arm  357  may close the second door  302  by interoperating with the second slot  364 , while moving from the second end region P 4  to the second inflection region V 2 . 
     In an embodiment, the seventh state S 7  of the electronic device  201  may be a state in which the rotation angle θ of the electronic device  201  is adjacent to the set second angle. From the seventh state S 7  to the eighth state S 8 , the rotation angle θ of the electronic device  201  may increase and the driving module  350  may open the second door  302 . Opening of the second door  302  may protrude the input device  221  from the second housing  220 , as shown in  FIG.  7 C . 
     Referring to  FIGS.  6 A through  7 C , the electronic device  201  may alternately open and close the first door  301  and the second door  302  as the rotation angle θ increases or decreases. 
     For example, when the rotation angle θ is between the start angle (e.g., an angle of the first position θ 1  of  FIG.  6 A  or an angle of the seventh position θ 7  of  FIG.  7 A ) and the first angle (e.g., an angle of the fourth position θ 4  of  FIG.  6 D  or an angle of the eighth angle θ 8  of  FIG.  7 B ), at least some regions of the first door  301  may be opened and the second door  302  may be closed. 
     For example, when the rotation angle θ is between the second angle (e.g., an angle of the seventh position θ 7  of  FIG.  7 B  or an angle of the fourth position θ 4  of  FIG.  6 D ) and the end angle (e.g., an angle of the eighth position θ 8  of  FIG.  7 C  or an angle of the fifth position θ 5  of  FIG.  6 E ), the first door  301  may be closed and at least some regions of the second door  302  may be opened. 
     The electronic device  201  according to various embodiments may include the first housing  210  that includes the display module  211  providing a display screen, the second housing  220  that includes the first door  301  provided on one surface  228  and the second door  302  provided on another surface  225  opposite to the first door  301 , the hinge unit  310  that rotatably connects the first housing  210  to the second housing  220 , and the driving module  350  that opens and closes the first door  301  and the second door  302  by interoperating with the hinge unit  310 . The driving module  350  may open the first door  301  when the rotation angle θ (e.g., an angle formed between the first housing  210  and the second housing  220  based on the hinge unit  310 ) is less than the set first angle (e.g., first reference angle) and may open the second door  302  when the rotation angle θ is greater than the set second angle (e.g., second reference angle). 
     In an embodiment, the first angle may be substantially the same as the second angle and the driving module  350  may close the first door  301  and the second door  302  when the rotation angle θ is the first angle. 
     In an embodiment, the first angle may be less than the second angle and the driving module  350  may close the second door  302  when the rotation angle θ is less than the first angle and may close the first door  301  when the rotation angle θ is greater than the second angle. 
     In an embodiment, the driving module  350  may open the first door  301  and the second door  302  when the rotation angle θ is between the first angle and the second angle. 
     In an embodiment, the driving module  350  may open and close the first door  301  and the second door  302  such that the first door  301  and the second door  302  are alternately opened as the rotation angle θ increases. 
     In an embodiment, the hinge unit  310  may rotate the first housing  210  and the second housing  220  such that an angle at which the first housing  210  and the first door  301  face each other (e.g., completely infolded) is the start angle and an angle at which the first housing  210  and the second door  302  face each other (e.g., completely outfolded) is the end angle. 
     In an embodiment, the driving module  350  may close the first door  301  and the second door  302  at the start angle and may close the first door  301  and open the second door  302  at the end angle. 
     In an embodiment, the second housing  220  may include the input device  221  connected to the second door  302  and the driving module  350  may open and close the second door  302  by pushing the second door  302  and the input device  221  from the second housing  220 . 
     In an embodiment, the electronic device  201  may be supported in a direction in which the first door  301  and an external support (not illustrated) face each other and the driving module  350  may open the first door  301  by pushing the second housing  220  from the first door  301  in a state in which the first door  301  contacts the external support (not illustrated). The pushing of the second housing  220  by the first door  301  which is open, may dispose the second housing  220  spaced apart from the external support and define a heat dissipation path adjacent to the external support, without being limited thereto. 
     In an embodiment, the driving module  350  may include the gears  351  and  352  that rotate by interoperating with the hinge unit  310 , the shafts  353  and  354  that extend from the rotation axis of the gears  351  and  352  and include the shaft arms  356  and  357 , and the slots  363  and  364  in which the shaft arms  356  and  357  move by interoperating with the rotation of the shafts  353  and  354 . Also, the driving module  350  may include the support members  361  and  362  connected to the first door  301  and the second door  302 , respectively. 
     In an embodiment, in the driving module  350 , the shaft arms  356  and  357  may press the slots  363  and  364 , to be moveable along the slots  363  and  364 , by interoperating with the rotation of the shafts  353  and  354  to push the support members  361  and  362 . 
     In an embodiment, the driving module  350  may include the first gear  351  that rotates in one direction by interoperating with the hinge unit  310  and the second gear  352  that rotates in a direction opposite to the first gear  351  by engaging with the first gear  351 . 
     In an embodiment, the driving module  350  may include the first shaft arm  356  and the second shaft arm  357  that move by interoperating with the hinge unit  310 , the first support member  361  that includes the first slot  363  being a path in which the first shaft arm  356  moves and is pressed by the first shaft arm  356  to push the first door  301  from the second housing  220 , and the second support member  362  that includes the second slot  364  being a path in which the second shaft arm  357  moves and is pressed by the second shaft arm  357  to push the second door  302  from the second housing  220 . 
     In an embodiment, the first slot  363  may include the first inflection regions V 1-1 , V 1-2 , and V 1-3  in which a movement direction of the first shaft arm  356  changes at a position at which the rotation angle θ is adjacent to the first angle. 
     In an embodiment, the second slot  364  may include the second inflection region V 2  in which a movement displacement of the second shaft arm  357  changes at a position at which the rotation angle θ is adjacent to the second angle. 
     In an embodiment, the electronic device  201  may include the housings  210  and  220  that include the first housing  210  including the first surface  215  and the second surface  218  opposite to the first surface  215 , the second housing  220  including the third surface  228  and the fourth surface  225  opposite to the third surface  228 , the first door  301  provided on the third surface  228 , and the second door  302  provided on the fourth surface  225 , the hinge unit  310  configured to connect the first housing  210  to the second housing  220  and adjust a rotation angle θ, which is an angle between the first housing  210  and the second housing  220 , from a start angle at which the first surface  215  and the fourth surface  225  face each other to an end angle at which the second surface  218  and the third surface  228  face each other, and the driving module  350  configured to open the first door  301  when the rotation angle θ is less than a set first angle and open the second door  302  when the rotation angle θ is greater than a second angle, the second angle being equal to or greater than the first angle. 
     In an embodiment, the driving module  350  may close the first door  301  and the second door  302  at the start angle and may close the first door  301  and open the second door  302  at the end angle. 
     In an embodiment, the driving module  350  may open the first door  301  and close the second door  302  when the rotation angle θ is between the start angle and the first angle and may close the first door  301  and the open the second door  302  when the rotation angle θ is between the second angle and the end angle. 
     In an embodiment, the first angle may be substantially the same as the second angle and the driving module  350  may close the first door  301  and the second door  302  when the rotation angle θ is the first angle. 
     In an embodiment, the driving module  350  may open and close the first door  301  and the second door  302  such that the first door  301  and the second door  302  are alternately opened as the rotation angle θ increases. 
     Although embodiments have been illustrated and described hereinabove, the disclosure is not limited to the abovementioned specific embodiments, but may be variously modified by those skilled in the art without departing from the gist of the disclosure as disclosed in the accompanying claims. These modifications should also be understood to fall within the scope and spirit of the disclosure.