Various example embodiments relate to a foldable electronic device including a shape memory alloy, and/or a method for controlling the same.
As electronic devices visually display more information and support more functions, users who want displays having larger screens are increasing. There has been development of a new type of electronic devices for providing displays having large screens while maintaining portable sizes.
Development of display technologies has made it possible to implement foldable displays. Electronic devices using such displays such that the information display area can be varied by folding are also available.
Foldable electronic devices including foldable displays may have increased portability in a folded state, and may have an increased information display area in an unfolded state. Accordingly, new device use environments may be provided to users.
A foldable electronic device may be folded or unfolded by an external force provided by the user. The force necessary in the process of unfolding or folding the electronic device may be increased by the structural stability of the foldable electronic device and the force for maintaining the folded state while no external force is provided.
The increased force necessary to fold or unfold the foldable electronic device may be a burden on the user. For this reason, some users may use the electronic device held in the same state (for example, folded state or unfolded state).
This may have a disadvantageous effect when the user wants to use the new device use environment provided by the foldable electronic device.
Various example embodiments disclosed herein may provide various structures capable of assisting folding and unfolding operations of a foldable electronic device by using a shape memory alloy which memories a specific shape.
An electronic device according to various example embodiments may include a first housing, a second housing, a hinge device configured to connect the first housing and the second housing such that the electronic device is switched from a folded state into an unfolded state, a first alloy member, at least a part of which is fixed to the first housing, the second housing, and the hinge device and which is made of a shape memory alloy material, a second alloy member, at least a part of which is fixed to the first housing and the second housing at a position different from the first alloy member and which is made of a shape memory alloy material, and a driving circuit configured to apply power to at least one of the first alloy member and the second alloy member such that at least one of the first alloy member and the second alloy member is restored.
A method of controlling an electronic device according to various example embodiments may include identifying, by at least one processor, separation of a first magnet in a first housing and a second magnet disposed in a second housing foldably connected, directly or indirectly, to the first housing detected using a least a hall sensor or a motion sensor, controlling, by the at least one processor, a driving circuit, such that at least a part thereof is fixed to the first housing and the second housing and power is applied to an alloy member made of a shape memory alloy material restored to a predetermined shape, based on the identification, identifying, by the at least one processor, a folded state of the first housing and the second housing detected using at least a folding sensor, and controlling, by the at least one processor, the driving circuit such that the power application to the alloy member is stopped, based on arrival of the folded state at a predetermined state.
According to various example embodiments, a shape memory alloy may be used such that unfolding or folding operations of an electronic device are performed automatically, or the unfolding or folding operations are assisted, thereby reducing the force necessary therefor.
Accordingly, user convenience may be improved, and the user may thus freely unfold or fold the electronic device, thereby conveniently using user experience provided by the foldable electronic device.
In connection with description of drawings, identical or similar components may be given similar or identical reference numerals.
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 coupled with the processor 120, and may perform various data processing or computation. According to an embodiment, as at least part of the data processing or computation, the processor 120 may store a command or data received from another component (e.g., the sensor module 176 or the communication module 190) in volatile memory 132, process the command or the data stored in the volatile memory 132, and store resulting data in 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 from, 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 as separate from, or as part of the main processor 121.
The auxiliary processor 123 may control at least some of functions or states related to at least one component (e.g., the display module 160, the sensor module 176, or the communication module 190) among 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 together with the main processor 121 while the main processor 121 is in an active state (e.g., executing an application). According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module 180 or the communication module 190) functionally related to the auxiliary processor 123. According to an embodiment, the auxiliary processor 123 (e.g., the neural processing unit) 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, e.g., by the electronic device 101 where the artificial intelligence is performed or via a separate server (e.g., the server 108). Learning algorithms may include, but are not limited to, e.g., supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), 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 in the memory 130 as software, 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 sound signals 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 for receiving incoming calls. According to an embodiment, the receiver may be implemented as separate from, or as part of the speaker.
The display module 160 may visually provide information to the outside (e.g., a user) of the electronic device 101. The display module 160 may include, for example, a display, a hologram device, or a projector and control circuitry to control a corresponding one of the display, hologram device, and projector. According to an embodiment, the display module 160 may include a touch sensor adapted to detect a touch, or a pressure sensor adapted to measure the intensity of force incurred by the touch.
The audio module 170 may convert a sound into an electrical signal and 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 a headphone of an external electronic device (e.g., an electronic device 102) directly (e.g., wiredly) or wirelessly coupled with 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 then generate an electrical 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.
A connecting terminal 178 may include a connector via which the electronic device 101 may be physically connected with the external electronic device (e.g., the electronic device 102). According to an embodiment, the connecting terminal 178 may include, for example, a HDMI connector, a USB connector, a SD card connector, or an audio connector (e.g., a headphone connector).
The haptic module 179 may convert an electrical signal into a mechanical stimulus (e.g., a vibration or a movement) or electrical stimulus which may be recognized by a user via his 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 or 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 at least part of, for example, 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 from the processor 120 (e.g., the application processor (AP)) and supports 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 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., LAN or 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 subscriber identification module 196.
The wireless communication module 192 may support a 5G network, after a 4G network, and next-generation communication technology, e.g., 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., the millimeter (mm) Wave 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 (massive MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or 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 composed of 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 the communication network, such as the first network 198 or the second network 199, may be selected, for example, by the communication module 190 (e.g., the wireless communication module 192) from the plurality of antennas. The signal or the power may then be transmitted or received between the communication module 190 and the external electronic device via the selected at least one 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 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 printed circuit board, a RFIC disposed on a first surface (e.g., the bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a designated high-frequency band (e.g., the mmWave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., the top or a side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the designated high-frequency band.
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 electronic devices 102 or 104 may be a device of a same type as, or a different type, from the electronic device 101. According to an embodiment, all or some of operations to be executed at the electronic device 101 may be executed at one or more of the external electronic devices 102, 104, or 108. For example, if the electronic device 101 should 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 the 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 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 another 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.
Referring to
According to various embodiments, the pair of housings 210 and 220 may include the first housing 210 and the second housing 220 foldably disposed to each other through the hinge device (e.g., hinge device 320 of
According to various embodiments, in the unfolded state of the electronic device 200, the first housing 210 may be connected to the hinge device (e.g., hinge device 320 of
According to an embodiment, the electronic device 200 may include a recess 201 formed to accommodate the first display 230 through structural combination of the first housing 210 and the second housing 220. According to an embodiment, the recess 201 may have substantially the same size as that of the first display 230.
According to various embodiments, the hinge housing 310 (e.g., a hinge cover) may be disposed between at least the first housing 210 and the second housing 220 so as to hide the hinge device (e.g., hinge device 320 of
According to various embodiments, in case that the electronic device 200 is in the unfolded state (e.g., state of
According to various embodiments, in case that the electronic device 200 is in the folded state (e.g., state of
According to various embodiments, the electronic device 200 may include at least one of displays 230 and 251 disposed on the first housing 210 and/or the second housing 220, an input device 215, sound output devices 227 and 228, sensor modules 217a, 217b, and 226, camera modules 216a, 216b, and 225, a key input device 219, an indicator (not illustrated), or a connector port 229. In a certain embodiment, the electronic device 200 may omit at least one of constituent elements, or may additionally include at least one of other constituent elements.
According to various embodiments, the at least one display 230 and 251 may include the first display 230 (e.g., flexible display) disposed to be supported by the third side 221 of the second housing 220 through the hinge device (e.g., hinge device 320 of
According to various embodiments, the first display 230 may be disposed in a space formed by the pair of housings 210 and 220. For example, the first display 200 may be seated in a recess 201 formed by the pair of housings 210 and 220, and may be disposed to occupy substantially most of the front side of the electronic device 200. According to an embodiment, the first display 230 may include the flexible display of which at least a partial area can be transformed into a planar or curved side. According to an embodiment, the first display 230 may include the first area 230a facing the first housing 210, the second area 230b facing the second housing 220, and the folding area 230c connecting the first area 230a and the second area 230b, and facing the hinge device (e.g., hinge device 320 of
According to various embodiments, the electronic device 200 may include a first rear cover 240 disposed on the second side 212 of the first housing 210, and a second rear cover 250 disposed on the fourth side 222 of the second housing 220. In a certain embodiment, at least a part of the first rear cover 240 may be formed in a body with the first side member 213. In a certain embodiment, at least a part of the second rear cover 250 may be formed in a body with the second side member 223. According to an embodiment, at least one of the first rear cover 240 and the second rear cover 250 may be formed through a substantially transparent plate (e.g., glass plate including various coating layers or polymer plate) or an opaque plate. According to an embodiment, the first rear cover 240 may be formed through the opaque plate, such as coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the above materials. According to an embodiment, the second rear cover 250 may be formed through a substantially transparent plate, such as glass or polymer. Accordingly, the second display 400 may be disposed to be seen from the outside through the second rear cover 250 in the inner space of the second housing 220.
According to various embodiments, the input device 215 may include a microphone 215. In a certain embodiment, the input device 215 may include a plurality of microphones 215 disposed to be able to detect the direction of sound. According to an embodiment, the sound output devices 227 and 228 may include speakers 227 and 228. According to an embodiment, the speakers 227 and 228 may include a call receiver 227 disposed through the fourth side 222 of the second housing 220 and an external speaker 228 disposed through the side member of the second housing 220. In a certain embodiment, the microphone 215, the speakers 227 and 228, and the connector 229 may be disposed in the spaces of the first housing 210 and/or the second housing 220, and may be exposed to an external environment through at least one hole formed on the first housing 210 and/or the second housing 220. In a certain embodiment, the holes formed on the first housing 210 and/or the second housing 220 may be commonly used for the microphone 215 and the speakers 227 and 228. In a certain embodiment, the sound output devices 227 and 228 may include a speaker (e.g., piezo-electric speaker) operating in a state where the holes formed on the first housing 210 and/or the second housing 220 are excluded.
According to various embodiments, the camera modules 216a, 216b, and 225 may include the first camera device 216a disposed on the first side 211 of the first housing 210, the second camera device 216b disposed on the second side 212 of the first housing 210, and/or the third camera device 225 disposed on the fourth side 222 of the second housing 220. According to an embodiment, the electronic device 200 may include a flash 218 disposed near the second camera device 216b. According to an embodiment, the flash 218 may include, for example, a light emitting diode or a xenon lamp. According to an embodiment, the camera devices 216a, 216b, and 225 may include one or a plurality of lenses, an image sensor, and/or an image signal processor. In a certain embodiment, at least one of the camera devices 216a, 216b, and 225 may include two or more lenses (wide-angle lens and telephoto lens) and image sensors, and may be disposed together on any one side of the first housing 210 and/or the second housing 220.
According to various embodiments, the sensor modules 217a, 217b, and 226 may generate electrical signals or data values corresponding to an internal operation state of the electronic device 200 or an external environment state. According to an embodiment, the sensor modules 217a, 217b, and 226 may include the first sensor module 217a disposed on the first side 211 of the first housing 210, the second sensor module 217b disposed on the second side 212 of the first housing 210, and/or the third sensor module 226 disposed on the fourth side 222 of the second housing 220. In a certain embodiment, the sensor modules 217a, 217b, and 226 may include at least one of a gesture sensor, a grip sensor, a color sensor, an infrared (IR) sensor, an illuminance sensor, an ultrasonic sensor, an iris recognition sensor, or a distance detection sensor (TOF sensor or RiDAR scanner).
According to various embodiments, the electronic device 200 may further include at least one of non-illustrated sensor modules, for example, a barometric pressure sensor, a magnetic sensor, a biosensor, a temperature sensor, a humidity sensor, or a fingerprint recognition sensor. In a certain embodiment, the fingerprint recognition sensor may be disposed through at least one of the first side member 213 of the first housing 210 and/or the second side member 223 of the second housing 220.
According to various embodiments, the key input device 219 may be disposed to be exposed to the outside through the first side member 213 of the first housing 210. In a certain embodiment, the key input device 219 may be disposed to be exposed to the outside through the second side member 223 of the second housing 220. In a certain embodiment, the electronic device 200 may not include parts or all of the above-mentioned key input devices 219, and the key input device 219 that is not included may be implemented in other forms, such as a soft key, on the at least one display 230 and 251. As another embodiment, the key input device 219 may be implemented using a pressure sensor included in the at least one display 230 and 251.
According to various embodiments, the connector port 229 may accommodate connectors (e.g., USB connector or interface connector port (IF) module) for transmitting or receiving a power and/or data to or from an external electronic device. In a certain embodiment, the connector port 229 may perform a function for transmitting or receiving an audio signal to or from the external electronic device together, or may further include a separate connector port (e.g., ear-jack hole) for performing audio signal transmission/reception.
According to various embodiments, at least one camera module 216a and 225 of the camera modules 216a, 216b, and 225, at least one sensor module 217a and 226 of the sensor modules 217a, 217b, and 226, and/or the indicator may be disposed to be exposed through at least one display 230 and 251. For example, the at least one camera module 216a and 225, the at least one sensor module 217a and 226, and/or the indicator may be disposed under a display area of the displays 230 and 251 in an interior space of the at least one housing 210 and 220 and be disposed to contact an external environment through an opening or transparent area perforated to a cover member (e.g., a window layer (not illustrated) of the first display 230 and/or the second rear cover 250). According to an embodiment, an area in which the displays 230 and 251 and the at least one camera module 216a and 225 face each other is a part of an area displaying contents and may be formed as a transmission area having predetermined transmittance. According to an embodiment, the transmission area may be formed to have transmittance in a range of about 5% to about 20%. Such a transmission area may include an area overlapped with an effective area (e.g., view angle area) of the at least one camera module 216a and 225 through which light for generating an image by an image sensor passes. For example, the transmission area of the displays 230 and 251 may include an area having a lower pixel density than that of a peripheral area thereof. For example, the transmission area may replace the opening. For example, the at least one camera module 216a and 225 may include an under display camera (UDC). In another embodiment, some camera modules or sensor modules 217a and 226 may be disposed to perform functions thereof without being visually exposed through the display. For example, an area facing the camera modules 216a and 225 and/or the sensor modules 217a and 226 disposed under the displays 230 and 251 (e.g., display panel) has an under display camera (UDC) structure; thus, a perforated opening may be unnecessary.
Referring to
According to various embodiments, the first display 230 may include a display panel 231 (e.g., flexible display panel), and one or more plates 232 or layers on which the display panel 231 is seated. According to an embodiment, the display panel 231 may include a first panel area 231a corresponding to the first area (e.g., the first area 230a of
According to various embodiments, the second display 251 may be disposed in a space between the second housing 220 and the second rear cover 250. According to an embodiment, the second display 251 may be disposed to be seen from the outside through substantially the total area of the second rear cover 250 in the space between the second housing 220 and the second rear cover 250.
According to various embodiments, a hinge module 300 may include a hinge housing 310 and a hinge device 320. At least part of the hinge device 320 is accommodated in the hinge housing 310.
According to various embodiments, the support member assembly 260 may include a first support member 261 (e.g., first support plate), a second support member 262 (e.g., second support plate), the hinge device 320 disposed between the first support member 261 and the second support member 262, the hinge housing 310 covering the hinge device 320 as seen from the outside of the hinge device 320, and at least one wiring member 263 (e.g., flexible printed circuit board (FPCB)) crossing the first support member 261 and the second support member 262. According to an embodiment, the support member assembly 260 may be disposed between the one or more plates 232 and the at least one printed circuit board 270. According to an embodiment, the first support member 261 may be disposed between the first area 230a of the first display 230 and the first printed circuit board 271. According to an embodiment, the second support member 262 may be disposed between the second area 231b of the first display 230 and the second printed circuit board 272. According to an embodiment, inside the support member assembly 260, the at least one wiring member 263 and at least a part of the hinge device 320 may be disposed. The at least one wiring member 263 may be disposed in a direction (e.g., x-axis direction) crossing the first support member 261 and the second support member 262. According to an embodiment, the at least one wiring member 263 may be disposed in a direction (e.g., x-axis direction) that is vertical to the folding axis (e.g., y axis or folding axis A of
According to various embodiments, the at least one printed circuit board 270 may include a first printed circuit board 271 disposed to face the first support member 261 and a second printed circuit board 272 disposed to face the second support member 262. According to an embodiment, the first printed circuit board 271 and the second printed circuit board 272 may be disposed in the inner space that is formed by the support member assembly 260, the first housing 210, the second housing 220, the first rear cover 240, and/or the second rear cover 250. According to an embodiment, the first printed circuit board 271 and the second printed circuit board 272 may include a plurality of electronic components disposed to implement various functions of the electronic device 200. According to an embodiment, the first support member 261 may be included in the first housing 210. The first support member 261 may extend at least partially toward a first space (e.g., a first inner space). According to an embodiment, the second support member 262 may be included in the second housing 220. The second support member 262 may extend at least partially toward a second space (e.g., a second inner space).
According to various embodiments, the electronic device may include the first printed circuit board 271 disposed in the space formed through the first support member 261 in the first space of the first housing 210, a first battery 291 disposed at a location facing a first swelling hole 2611 of the first support member 261, at least one camera device 282 (e.g., first camera device 216a of
According to various embodiments, the first housing 210 may include a first rotation support side 214, and the second housing 220 may include a second rotation support side 224 corresponding to the first rotation support side 214. According to an embodiment, the first rotation support side 214 and the second rotation support side 224 may include a curved side corresponding (naturally connected) to a curved side included in the hinge housing 310. According to an embodiment, in the unfolded state of the electronic device 200, the first rotation support side 214 and the second rotation support side 224 may cover the hinge housing 310, and may not expose the hinge housing 310 to the rear side of the electronic device 200, or for example may minimally expose the hinge housing 310. According to an embodiment, in the folded state of the electronic device 200, the first rotation support side 214 and the second rotation support side 224 may be rotated along the curved side included in the hinge housing 310, and may expose the hinge housing 310 to the rear side of the electronic device 200.
In the following description, the same or similar reference numeral may be used for the same or similar components if a specific mention does not exist.
An electronic device illustrated in
Referring to
In an embodiment, at least a part of the hinge device may be accommodated in a hinge housing 430 (e.g., the hinge hosing of
In an embodiment, at least a part of a flexible display module 410 of the electronic device 400 may be configured to be transformable. The flexible display module 410, comprising a flexible display, may be transformed and folded as the first housing 421 and second housing 422 are folded. The flexible display module 410 may be supported by the first housing 421 and the second housing 422.
In an embodiment, with respect to an operation of the electronic device 400, electrical objects of various types may be disposed in the first housing 421 and the second housing 422. For example, printed circuit boards 441, 442 may be disposed in the first housing 421 and the second housing 422, respectively, and electronic components of various types may be disposed in the printed circuit boards 441, 442. Referring to
In an embodiment, a first rear cover 451 may be disposed on the first housing 421. A second rear cover 452 may be disposed on the second housing 422. The rear covers 451, 452 may be disposed on the first housing 421 and the second housing 422 to configure a rear surface appearance of the electronic device 400.
Referring to
According to an embodiment, the alloy member 500 may be manufactured in various types. For example, as illustrated in
In various embodiments, at least a part of the alloy member 500 may be fixed to the first housing 421 and the second housing 422, respectively. The alloy member 500 may be fixed to the first housing 421 and/or the second housing 422 by various methods.
For example, as illustrated in
According to an embodiment, the hinge device 431 of the electronic device 400 may include a rotation interworking structure (e.g., a gear interworking structure). The electronic device including the hinge device 431 may be configured such that the first housing 421 and the second housing 422 may be folded or unfolded. A structure of fixing the alloy member 500 to the first housing 421, the second housing 422 and the hinge device 431 or the hinge housing 430 may be effective in case that the hinge device 431 includes the rotation interworking structure as above. In case of fixing the alloy member 500 to the first housing 421, the second housing 422 and the hinge device 431 or the hinge housing 430, the restoration force of the alloy member 500 may participate in folding or unfolding operation of first housing 421 and the second housing 422.
In addition, as illustrated in
As illustrated in
For another example, as illustrated in
In an embodiment, as illustrated in
According to various embodiments, the alloy member 500 may be accommodated in a flexible carrier 580. The flexible carrier 580 may be made of a flexible material so that the flexible carrier 580 can be transformed together according to transformation and restoration of the alloy member 500. For example, the flexible carrier 580 may be made of a synthetic resins material. The flexible carrier 580 may include a space capable of accommodating the alloy member 500 therein.
In an embodiment, the flexible carrier 580 may be made of an insulating material. By power applied to the alloy member 500, an operation characteristic of an electronic component adjacent to the alloy member 500 may be changed. In order to prevent or reduce the change, the flexible carrier 580 surrounding the alloy member 500 may be made of an insulating material.
In an embodiment, the flexible carrier 580 may be made of an adiabatic material. In a process of increasing the temperature of the alloy member 500, in order to prevent or reduce a chance of the temperature of the surrounding electronic components from being unintentionally increased, the flexible carrier 580 may be made of an adiabatic material. In addition, when the flexible carrier 580 is made of an adiabatic material, the heat fails to easily escape to the outside of the flexible carrier 580 so that the temperature of the alloy member 500 may more promptly increase to induce more rapid restoration of the alloy member 500.
In an embodiment, the flexible carrier 580 may include a carrier fixing part 570 supporting the flexible carrier 580. A plurality of the carrier fixing parts 570 may support several parts of the flexible carrier 580. As illustrated in
According to various embodiments, the carrier fixing part 570 may include a terminal 571. The terminal 571 may be electrically connected to the alloy member 500. In an embodiment, the carrier fixing part 570 may be fixed, directly or indirectly, to an electronical object (e.g., the printed circuit board 441, 442 of
The force mainly relating to a process in which the electronic device 400 is unfolded may include the friction force of a hinge device (e.g., the hinge device 431 of
Referring to
According to various embodiments, the alloy member 500 may memorize the shape of the alloy member 500 in the unfolded state of the electronic device 400 as illustrated in
In another embodiment, the first alloy member storing the shape in the unfolded state of the electronic device 400 and the second alloy member storing the shape in the folded state of the electronic device 400 may be used. When the temperature of the first alloy member increases, the electronic device 400 may be switched from the folded state into the unfolded state by the restoration force of the first alloy member. When the temperature of the second alloy member increases, the electronic device 400 may be switched from the unfolded state into the folded state by the restoration force of the second alloy member.
According to various embodiments, the alloy member 500 may be disposed in various positions of the electronic device 400. The number, the disposition, and the shape of the alloy member 500 may be variously changed according to design elements of the electronic device 400.
In an embodiment, the alloy member 500 may be arranged and disposed in a center C of the electronic device 400, as illustrated in
In an embodiment, a plurality of alloy members 500 may be provided. In case that the plurality of the alloy member 500 are provided, the alloy member 500 may be disposed symmetrically to each other with reference to the center C of the electronic device 400, as illustrated in
In an embodiment, as illustrated in
According to various embodiments, the plurality of the alloy members 500 may be configured as one unit. For example, the plurality of the alloy members 500 may be disposed in the flexible member by various methods, to allow the flexible member to be transformed by restoring the alloy member 500. For example, the flexible member may be a plate member.
According to various embodiments, the electronic device may include the plurality of alloy members 500 restored to the shape memorized at each different temperature. For example, the electronic device may include a first alloy member 500A restored at the first temperature and a second alloy member 500B restored at the second temperature higher than the first temperature.
According to an embodiment, the driving circuit 1410 applying power to the alloy member 500 may be configured to individually supply power to the plurality of alloy members 500. For example, referring to
According to an embodiment, in case that there is the plurality of alloy members 500 restored at each different temperature, power may be applied to a part of the plurality of the alloy members 500, based on the current temperature. Hereinafter, for convenience of explanation, the plurality of alloy members 500 include only the first alloy member 500A restored at a first temperature and the second alloy member 500B restored at a second temperature.
In an embodiment, since the alloy member 500 is transformed, an electrical connection for applying power to the alloy member 500 may be configured in a structure capable of maintaining the connection with the alloy member 500 even if the alloy member 500 is transformed. For example, the alloy member 500 may be connected, directly or indirectly, through a circuit to which power is applied, a contact pin structure having elasticity, or compressed wire.
In an embodiment, the electronic device may include a temperature sensor (e.g., a temperature sensor 1700 of
According to various embodiments, a plurality of the first alloy members 500A may be provided to be disposed symmetrically to each other with reference to the center of the electronic device, and a plurality of the second alloy members 500B may be provided to be disposed symmetrically to each other with reference to the center of the electronic device. Through the disposition, the restoration force of the alloy member 500 may be evenly dispersed over the electronic device in the operations by which the first alloy member 500A or the first alloy member 500A and the second alloy member 500B are restored.
In an embodiment, both the temperature value measured by the temperature sensor and the repulsive force of the flexible display module at the temperature thereof may be considered in a process of applying power to the alloy member 500.
Hereinafter, a case that the restoration temperatures of the first alloy member to the fifth alloy member are all the same temperature will be described by the first embodiment, and a case that that the restoration temperatures of the first alloy member to the fifth alloy member are different will be described by the second embodiment.
Hereinafter, for convenience of explanation, one restoration force among the alloy members 500 is described as having a value of 70 gf, and the sum of the restoration force of the alloy member 500 is described as being directly proportional to the number of the restored alloy member 500. In addition, force for unfolding the electronic device is described having a value of 350 gf.
Referring to Table 1, the first embodiment will be described. The number “1” in Table 1 may be understood as indicating that the alloy member has reached the restoration temperature and has been restored.
The Table 1 is to explain a case of using the first alloy member to the fifth alloy member having the same restoration temperature of 70 degrees. The repulsive force of the flexible display module (e.g., the flexible display module 410 of
For example, in case that the current temperature is 20 degrees, the repulsive force of the flexible display module is 290 gf and force for unfolding the electronic device is 350 gf, so that a force of at least 60 gf may be further necessary in order to unfold the electronic device. Since the restoration force of one alloy member 500 is 70 gf, the sum of the repulsive force of the flexible display module and the restoration force of the alloy member 500 becomes 360 gf to enable the electronic device to be unfolded when power is applied to enable one of the alloy members 500 to be reached at the restoration temperature.
For example, in case that the current temperature is 60 degrees, the repulsive force of the flexible display module is 10 gf, and the force of at least 340 gf may be further necessary in order to unfold the electronic device. Since the restoration force of one alloy member 500 is 70 gf, the sum of the repulsive force of the flexible display module and the restoration force of five alloy members 500 becomes 360 gf to enable the electronic device to be unfolded when power is applied to all of the five alloy members 500.
As above, in case of using the plurality of the alloy members 500 having the same restoration temperature, power may be applied to the plurality of the alloy member 500 according to the repulsive force of the flexible display module changed according to the temperature.
Referring to Table 2, the second embodiment will be described. The number “1” in Table 2 may be understood indicating that the alloy member has reached the restoration temperature and has been restored.
The alloy member 500 of the second embodiment may include the plurality of the alloy members 500 having each different restoration temperature, differently from the alloy member 500 of the first embodiment. Referring to Table 2, the alloy member 500 may include the first alloy member 500A restored at 30 degrees, the second alloy member 500B restored at 40 degrees, a third alloy member 500C restored at 50 degrees, a fourth alloy member 500D restored at 60 degrees, and a fifth alloy member 500E restored at 70 degrees.
In an embodiment, even though a part of the alloy member 500 is restored, the plurality of the first alloy member 500A to the fifth alloy member 500E may be individually provided to be disposed symmetrically to each other with reference to the center of the electronic device so that force can be evenly dispersed to the electronic device. In another embodiment, one of the first alloy member 500A to the fifth alloy member 500E may be disposed in the center of the electronic device, and the remaining alloy members 500 may be disposed symmetrically to each other with reference to the center of the electronic device. For example, as described in
In another embodiment, as illustrated in
For convenience of explanation, in case of the plurality of the first alloy member 500A to the fifth alloy member 500E, the sum of the restoration force of each alloy member 500 is described having a value of 70 gf. In an embodiment, the sum of the restoration force may be controlled to be substantially equal to each other, by controlling the thickness of each allow member 500. For example, in case of
In case of the temperature at 20 degrees, the repulsive force of the flexible display module may be 290 gf. At this temperature, power may be applied to only the first alloy member 500A. When the first alloy member 500A is reached at the restoration temperature, the sum of the restoration force of the first alloy member 500A and the repulsive force of the flexible display module may be 360 gf. The force for unfolding the electronic device is 350 gf, so that the electronic device may be unfolded.
In case of the temperature at 30 degrees, the repulsive force of the flexible display module may be 220 gf. At 30 degrees, the first alloy member 500A may be restored even if the power is not applied. Therefore, the sum of the restoration force of the first alloy member 500A and the second alloy member 500B becomes 140 gf when power is applied to only the second alloy member 500B to enable the second alloy member 500B to be reached at the restoration temperature, so that the sum of the restoration force and the repulsive force of the flexible display module may become 360 gf. The force for unfolding the electronic device is 350 gf, so that the electronic device may be unfolded.
In case of the temperature at 40 degrees, the repulsive force of the flexible display module may be 150 gf. At 40 degrees, the first alloy member 500A and the second alloy member 500B may be restored even if power is not applied. Therefore, the sum of the restoration force of the first alloy member 500A to the third alloy member 500C becomes 210 gf when the power is applied to only the third alloy member 500C to enable the third alloy member 500C to be reached at the restoration temperature, so that the sum of the restoration force and the repulsive force of the flexible display module may become 360 gf. The force for unfolding the electronic device is 350 gf, so that the electronic device may be unfolded.
In case of the temperature at 50 degrees, the repulsive force of the flexible display module may be 80 gf. At 50 degrees, the first alloy member 500A to the third alloy member 500C may be restored even if the power is not applied. Therefore, the sum of the restoration force of the first alloy member 500A to the fourth alloy member 500D becomes 280 gf when the power is applied to only the fourth alloy member 500D to enable the fourth alloy member 500D to be reached at the restoration temperature, so that the sum of the restoration force and the repulsive force of the flexible display module may become 360 gf. The force for unfolding the electronic device is 350 gf, so that the electronic device may be unfolded.
In case of the temperature at 60 degrees, the repulsive force of the flexible display module may be 10 gf. At 60 degrees, the first alloy member 500A to the fourth alloy member 500D may be restored even if the power is not applied. Therefore, the sum of the restoration force of the first alloy member 500A to the fifth alloy member 500E becomes 350 gf when the power is applied to only the fifth alloy member 500E to enable the fifth alloy member 500E to be reached at the restoration temperature, so that the sum of the restoration force and the repulsive force of the flexible display module may become 360 gf. The force for unfolding the electronic device is 350 gf, so that the electronic device may be unfolded.
In the second embodiment, in the temperature range of 20 degrees to 60 degrees, the sum of the restoration force and the repulsive force exceeds the force necessary to unfold the electronic device when the power is applied to only one among the first alloy member 500A to the fifth alloy member 500E, so that the electronic device may be unfolded. Therefore, differently from the first embodiment, the amount of power applied for restoring the alloy member 500 may be reduced.
The first embodiment and the second embodiment, described through Table 1 and Table 2, may be merely the examples, and the design elements such as the restoration temperature, the number or the thickness of the alloy member 500 may be variously changed in consideration of the repulsive force of the flexible display module according to the change of the temperature.
According to various embodiments, the alloy member 500 may be used as a heat transfer medium. The alloy member 500 includes alloy materials, so that thermal conductivity thereof may be high. The heat of a heating component 1600 may be transferred to a heat dissipation member 1500 by using the alloy member 500.
As illustrated in
In an embodiment, in case that the alloy member 500 and the heat dissipation member 1500 are disposed to be in contact with each other, when the temperature of a part of the alloy member 500 increases by power applied to a part of the plurality of the alloy member 500, the temperature of the adjacent alloy members 500 may also increase by the heat dissipation member 1500. Through this, the power necessary to increase the temperature of the plurality of the alloy members 500 may be decreased.
In an embodiment, in case that the alloy member 500 is adjacent to the heating component 1600, the temperature of the alloy member 500 may increase by the temperature of the heating component 1600. Through this, the alloy member 500 may be easily reached at the restoration temperature, without supply of the separate power. In addition, the temperature of the flexible display module (e.g., the flexible display module 410 of
In an embodiment, the heat of the alloy member 500 may be dispersed through the heat dissipation member 1500. The heat of the alloy member 500 is dispersed through the heat dissipation member 1500 in a state in which the power is not applied to the alloy member 500, so that the temperature of the alloy member 500 may be rapidly reduced. The temperature of the alloy member 500 is rapidly decreased at the restoration temperature, so that immediacy of the folded or unfolded assistance operation control may be improved through the alloy member 500.
According to various embodiments, a first magnet 1710 may be disposed in the first housing 421, and a second magnet 1720 may be disposed in the second housing 422. The first magnet 1710 and the second magnet 1720 may be disposed at positions facing each other when the electronic device 400 is in the folded state. The folded state of the electronic device 400 may be maintained by attractive force of the first magnet 1710 and the second magnet 1720.
In an embodiment, a power application of the alloy member 500 through the driving circuit (e.g., the driving circuit 1410 of
Referring to
In addition, a situation in which the electronic device 400 is to be switchable into the unfolded state may be identified by various methods, so that power may be applied to the alloy member 500. For example, the power may be applied to the alloy member 500 by sensing a fixing release operation corresponding to various methods (e.g., a clip, a ring, a button, or a driving power of a motor, etc.) for fixing the first housing 421 and the second housing 422 in the folded state. For another example, the power may be applied to the alloy member 500, based on a grip state of the electronic device 400. The grip state of the electronic device 400 may be identified by using a sensor capable of recognizing a contact of the electronic device 400 with the skin of a user (e.g., a grip sensor or a touch sensor of the display). In addition, the power may be applied to the alloy member 500, based on an angle made by the first housing 421 and the second housing 422 or various triggers for the unfolding or folding operation (e.g., a button input, a touch input through a display, or an operation start point recognition of a motor, etc.).
In an embodiment, the processor may identify the folded state of the electronic device 400 detected using a folding sensor (not illustrate). The folding sensor may be a sensor capable of identifying how much the electronic device 400 has been folded or unfolded. The folding sensor may sense the folded state by identifying a relative distance between a part of the first housing 421 (e.g., one edge of the first housing 421) and a part of the second housing 422 (e.g., one edge of the second housing 422). An angle made by the first housing 421 and the second housing 422 may be identified when a disposition position of the folding sensor and the relative distance of the first housing 421 and the second housing 422 are known. The folding state of the electronic device 400 may be identified through the angle. The folding sensor may include, for example, a hall sensor which detects the change of a magnetic field or a motion sensor capable of sensing an operation of the first housing 421 and the second housing 422 (e.g., an acceleration sensor, a geomagnetic sensor, or a gyro sensor, etc.).
In an embodiment, the processor may identify that the folded state has reached the predetermined state in operation 1830. When the folded state is reached into the predetermined state, the driving circuit may be controlled to stop a power application of the alloy member 500. For example, the predetermined state may be a state in which the angle made by the first housing 421 and the second housing 422 is 170 degrees or more.
In another embodiment, the power applied to the alloy member 500 may be determined based on the temperature value sensed by the temperature sensor 1700 disposed adjacent to the alloy member 500. The speed of the operation of unfolding the electronic device 400 by the alloy member 500 may be determined by the surrounding temperature of the alloy member 500. For example, the speed of unfolding the electronic device 400 by the alloy member 500 may be slow in a state of the low temperature. In an embodiment, in the low temperature circumstance, more power is applied to rapidly increase the temperature of the alloy member 500.
In an embodiment, the processor may identify a temperature value measured by the temperature sensor 1700, so that the driving circuit may control the amount of power applied to the alloy member 500 according to the temperature value. For example, in case that the temperature value is lower than the predetermined temperature value (e.g., about 20 degrees), the driving circuit may be controlled so that the amount of power higher than that of the general case is to be applied to the alloy member 500.
Referring to
In case that the measured temperature is higher than the predetermined temperature, a first power is applied to the alloy member 500 in operation 1930. On the other hand, in case that the temperature is equal to or lower than the determined temperature, a second power may be applied to the alloy member 500 in operation 1940. Herein, the second power may have an amount of power higher than that of the first power. In case that the temperature measured by the temperature sensor 1700 is equal to or lower than the predetermined temperature, the amount of power relatively higher than a case that the measured temperature is higher than the determined temperature may be applied to the alloy member 500, so that the alloy member 500 may be controlled to be rapidly reached at the restoration temperature.
The processor may identify that the folded state is reached into the predetermined state in operation 1950. In case that the folded state is reached into the predetermined state, the driving circuit may be controlled to stop a power application of the alloy member 500.
In an embodiment, the alloy member 500 may be contracted or expanded according to the temperature. The alloy member 500 may be configured in a wire shape. In case that the alloy member 500 is used, the electronic device may be switched into the folded or the unfolded state according to a fixing method of the alloy member 500.
For example, as illustrated in
For example, as illustrated in
An electronic device (e.g., the electronic device 101 of
In addition, the electronic device may further include a temperature sensor (e.g., the temperature sensor 1700 of
In addition, the electronic device may further include a folding sensor configured to sense a folded state of the electronic device, wherein the driving circuit is configured to control an amount of the power applied to at least one of the first alloy member and the second alloy member, based on a folded state sensed by the folding sensor.
In addition, the electronic device may further include a temperature sensor disposed adjacent to the first alloy member and the second alloy member, wherein the first alloy member is configured to be restored at a first temperature, the second alloy member is configured to be restored at a second temperature higher than the first temperature, and the driving circuit may be configured to apply power so that the first alloy member reaches the first temperature or to apply power so that the second alloy member reaches the second temperature, based on the temperature value measured by the temperature sensor.
In addition, the first alloy member and the second alloy member may be disposed symmetrically to each other with reference to a center of the electronic device.
In addition, a plurality of the first alloy members may be provided to be disposed symmetrically to each other with reference to the center of the electronic device, and a plurality of the second alloy members are provided to be disposed symmetrically to each other with reference to the center of the electronic device.
In addition, the electronic device may further include a flexible display module (e.g., the flexible display module 410 of
In addition, the thickness of the first alloy member and the thickness of the second alloy member may be configured to be different from each other.
In addition, the first alloy member may be configured to memorize a shape of the first alloy member in an unfolded state of the electronic device, and the second alloy member may be configured to memorize a shape of the second alloy member in a folded state of the electronic device.
In addition, the electronic device may further include a flexible carrier (e.g., the flexible carrier 580 of
In addition, the electronic device may further include a heat dissipation member (e.g., the heat dissipation member 1500 of
In addition, at least one of the first alloy member and the second alloy member may be disposed to be in contact with the heating component of the electronic device.
A method of controlling an electronic device (e.g., the electronic device 101 of
In addition, the controlling of the driving circuit such that power is applied to the alloy member may include identifying, by at least one processor, a temperature value measured by a temperature sensor (e.g., the temperature sensor 1700 of
In addition, the plurality of the alloy members may be provided and disposed symmetrically to each other with reference to the center of the electronic device.
In addition, the plurality of the alloy members may include the alloy member having the different thickness.
In addition, the plurality of the alloy members may include the first alloy member restored at the first temperature and the second alloy member restored at the second temperature higher than the first temperature.
In addition, the controlling of the driving circuit such that an amount of power applied to at least one of the first alloy member and the second alloy member is controlled may include controlling, by the at least one processor, the driving circuit such that power of the first temperature is applied to the first alloy member or power of the second temperature is applied to the second alloy member, based on the identified temperature value.
In addition, the controlling of the driving circuit such that power is applied to the alloy member may include identifying, by the at least one processor, a temperature value measured by a temperature sensor disposed adjacent to the alloy member, and controlling, by the at least one processor, the driving circuit such that an amount of power applied to at least one of the first alloy member and the second alloy member is controlled, based on the identified temperature value. “Based on” as used herein covers based at least on.
An electronic device (e.g., the electronic device 101 of
Embodiments disclosed in this specification and drawings merely present specific examples in order to easily describe the technical features according to the embodiments and to help understanding of the embodiments, and are not intended to limit the scope of the embodiments. Accordingly, the scope of the various embodiments of the disclosure should be construed in such a manner that, in addition to the embodiments disclosed herein, all changes or modifications derived from the technical idea of the various embodiments of the disclosure are included in the scope of the various embodiments of the disclosure. While the disclosure has been illustrated and described with reference to various embodiments, it will be understood that the various embodiments are intended to be illustrative, not limiting. It will further be understood by those skilled in the art that various changes in form and detail may be made without departing from the true spirit and full scope of the disclosure, including the appended claims and their equivalents. It will also be understood that any of the embodiment(s) described herein may be used in conjunction with any other embodiment(s) described herein.
Number | Date | Country | Kind |
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10-2021-0140546 | Oct 2021 | KR | national |
This application is a continuation of International Application No. PCT/KR2022/095138, designating the United States, filed on Oct. 19, 2022, in the Korean Intellectual Property Receiving Office, and claiming priority to KR Patent Application No. 10-2021-0140546 filed on Oct. 20, 2021, in the Korean Intellectual Property Office, the disclosures of all of which are hereby incorporated by reference herein in their entireties.
Number | Date | Country | |
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Parent | PCT/KR2022/095138 | Oct 2022 | US |
Child | 18521358 | US |