Electronic device comprising wing plate, and manufacturing method of wing plate

Abstract

This electronic device may comprise: a display assembly including a first area, a second area and a folding area between the first area and the second area; a first housing for supporting the first area; a second housing for supporting the second area; a hinge unit connecting the first housing to the second housing, and operating between a folded state in which the first area and the second area face each other and an unfolded state in which the first area and the second area do not face each other; and a wing plate which is disposed between the hinge unit and the display assembly and which supports the display assembly. The wing plate can be formed by stacking a plurality of sheets.

Description

Electronic device including wing plate and method for manufacturing wing plate

[0001] One embodiment of the present invention relates to an electronic device including a wing plate and a method for manufacturing the wing plate.

[0002] With the advancement of display-related technology, electronic devices equipped with flexible displays are being developed. Flexible displays can be used not only in a flat form but also in a specific form. For example, an electronic device including a flexible display can be implemented in a foldable form, capable of folding or unfolding along at least one folding axis.

[0003] However, the above-described content should not be construed as the applicant's recognition of the content described in this document as prior art, but should only be construed as technology (related art) related to the invention described in this document.

[0004] An electronic device according to one embodiment of the present document may include a display assembly including a first region, a second region, and a folding region between the first region and the second region, a first housing supporting the first region, a second housing supporting the second region, and a hinge unit connecting the first housing and the second housing and operating between a folded state in which the first region and the second region face each other and an unfolded state in which the first region and the second region do not face each other, and a wing plate disposed between the hinge unit and the display assembly and supporting the display assembly. In one embodiment, the wing plate may be formed by stacking a plurality of sheets.

[0005] In addition, a method for manufacturing a wing plate according to an embodiment of the present document may include an operation of stacking a plurality of sheets, an operation of positioning the plurality of sheets in a mold and thermoforming them, an operation of cutting the plurality of thermoformed sheets to form a wing plate, and an operation of washing the wing plate.

[0006] FIG. 1 is a block diagram of an electronic device within a network environment according to one embodiment.

[0007] FIG. 2A is a diagram illustrating an unfolded state of an electronic device according to an embodiment of the present disclosure.

[0008] FIG. 2b is a diagram illustrating a folded state of an electronic device according to an embodiment of the present disclosure.

[0009] FIG. 2c is a perspective view showing a fully unfolded state of an electronic device according to one embodiment of the present disclosure.

[0010] FIG. 2D is a perspective view illustrating an example of a partially unfolded intermediate state of an electronic device according to one embodiment of the present disclosure.

[0011] FIG. 3a is an exploded perspective view of an electronic device according to one embodiment.

[0012] FIG. 3b is a plan view of a portion of an electronic device according to one embodiment.

[0013] FIG. 3c is a cross-sectional view of an electronic device according to one embodiment.

[0014] FIG. 4a is an exploded perspective view of a plurality of sheets according to one embodiment.

[0015] FIG. 4b is a plan view of a plurality of sheets according to one embodiment.

[0016] FIG. 5a is a perspective view of a wing plate according to one embodiment.

[0017] Figure 5b is a plan view of a wing plate according to one embodiment.

[0018] Figure 5c is a rear view of a wing plate according to one embodiment.

[0019] FIG. 6A is a cross-sectional view of a portion of a wing plate according to one embodiment.

[0020] FIG. 6b is a cross-sectional view of a portion of a wing plate according to one embodiment.

[0021] FIG. 6c is a cross-sectional view of a portion of a wing plate according to one embodiment.

[0022] Figure 7 is a cross-sectional view of a portion of a wing plate according to one embodiment.

[0023] Figure 8a is a perspective view of a wing plate according to one embodiment.

[0024] FIG. 8b is a perspective view of a wing plate and a joining member according to one embodiment.

[0025] FIG. 8c is an exploded perspective view of a wing plate and a connecting member according to one embodiment.

[0026] Figure 9 is a flowchart of a method for manufacturing a wing plate according to one embodiment.

[0027] Figure 10 is a flowchart of a method for manufacturing a wing plate according to one embodiment.

[0028] Hereinafter, embodiments will be described in detail with reference to the attached drawings. In the description with reference to the attached drawings, identical components are assigned the same reference numerals regardless of the drawing numbers, and redundant descriptions thereof will be omitted.

[0029] Electronic devices according to embodiments disclosed herein may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments disclosed herein are not limited to the aforementioned devices.

[0030] The embodiments of this document and the terminology used herein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more items, unless the context clearly indicates otherwise. In this document, each of the phrases "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" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0031] The term "module" used in one embodiment of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0032] An embodiment of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0033] According to one embodiment, the method according to one embodiment disclosed in the present document may be provided as included 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 may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0034] According to one embodiment, each component (e.g., a module or a program) of the described components may include one or more entities, and some of the entities may be separated and placed in other components. According to one embodiment, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to integration. According to one embodiment, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0035] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment.

[0036] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0037] The processor (120) may control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) by executing, for example, software (e.g., a program (140)), and may perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculation, the processor (120) may store a command or data received from another component (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the command or data stored in the volatile memory (132), and store the resulting data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or a secondary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0038] The auxiliary processor (123) may control at least a part of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, in the electronic device (101) itself where artificial intelligence is performed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0039] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0040] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0041] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0042] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0043] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0044] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0045] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0046] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0047] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection 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).

[0048] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0049] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0050] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0051] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0052] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one 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 module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a 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 WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0053] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can 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 one embodiment, the wireless communication module (192) may support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0054] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). According to one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the selected at least one antenna. According to some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0055] In one embodiment, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0056] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0057] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service by itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0058] FIG. 2A is a diagram illustrating an unfolded state of an electronic device (200) according to an embodiment of the present disclosure, FIG. 2B is a diagram illustrating a folded state of an electronic device (200) according to an embodiment of the present disclosure, FIG. 2C is a perspective view illustrating a fully unfolded state of an electronic device (200) according to an embodiment of the present disclosure, and FIG. 2D is a perspective view illustrating an example of a partially unfolded intermediate state of an electronic device (200) according to embodiments of the present disclosure.

[0059] The electronic device (200) of FIGS. 2A to 2D may be a foldable or bendable electronic device, as an example of the electronic device (101) illustrated in FIG. 1.

[0060] The drawings below, including FIG. 2c, illustrate a spatial coordinate system defined by an X-axis, a Y-axis, and a Z-axis that are orthogonal to each other. Here, the X-axis may represent the width direction of the electronic device, the Y-axis may represent the length direction of the electronic device, and the Z-axis may represent the height (or thickness) direction of the electronic device. In the following description, the term "first direction" may mean a direction parallel to the Z-axis.

[0061] Referring to FIGS. 2A and 2B, in one embodiment, an electronic device (200) may include a foldable housing (201) and a flexible or foldable display (250) (hereinafter, simply “display” (250)) disposed within a space formed by the foldable housing (201) (e.g., a display module (160) of FIG. 1).

[0062] According to one embodiment, the surface on which the display (250) is arranged (or the surface on which the display (250) is visible from the outside of the electronic device (200)) may be defined as the front surface of the electronic device (200). In addition, the surface opposite to the front surface may be defined as the back surface of the electronic device (200). In addition, the surface surrounding the space between the front surface and the back surface may be defined as the side surface of the electronic device (200).

[0063] According to one embodiment, the foldable housing (201) may include a first housing structure (210), a second housing structure (220) including a sensor area (222), a first rear cover (215), a second rear cover (225), and a hinge structure (230). Here, the hinge structure (230) may include a hinge cover that covers a foldable portion of the foldable housing (201). The foldable housing (201) of the electronic device (200) is not limited to the shape and combination shown in FIGS. 2A and 2B, and may be implemented by a combination and / or combination of other shapes or parts. For example, in another embodiment, the first housing structure (210) and the first rear cover (215) may be formed integrally, and the second housing structure (220) and the second rear cover (225) may be formed integrally.

[0064] According to one embodiment, the first housing structure (210) is connected to the hinge structure (230) and may include a first side facing a first direction and a second side facing a second direction opposite to the first direction. The second housing structure (220) is connected to the hinge structure (230) and may include a third side facing a third direction and a fourth side facing a fourth direction opposite to the third direction. The second housing structure (220) may rotate about the hinge structure (230) with respect to the first housing structure (210). The electronic device (200) may be variable between a folded state and an unfolded state.

[0065] According to one embodiment, the electronic device (200) may have the first side facing the third side in a fully folded state, and the third direction may be the same as the first direction in a fully unfolded state.

[0066] According to one embodiment, the first housing structure (210) and the second housing structure (220) are arranged on both sides with respect to the folding axis (A) as the center, and may have an overall symmetrical shape with respect to the folding axis A. As described below, the angle or distance between the first housing structure (210) and the second housing structure (220) may vary depending on whether the state of the electronic device (200) is an unfolded state, a folded state, or a partially unfolded (or partially folded) intermediate state. According to one embodiment, unlike the first housing structure (210), the second housing structure (220) additionally includes a sensor area (222) in which various sensors are arranged, but may have a mutually symmetrical shape in other areas.

[0067] According to one embodiment, as illustrated in FIG. 2A, the first housing structure (210) and the second housing structure (220) may together form a recess that accommodates the display (250).

[0068] According to one embodiment, due to the sensor area (222), the recess may have two or more different widths in a direction perpendicular to the folding axis (A). According to one embodiment, the recess may have a first width (W1) between a first portion (210a) of the first housing structure (210) that is parallel to the folding axis (A) and a first portion (220a) formed at an edge of the sensor area (222) of the second housing structure (220), and the recess may have a second width (W2) formed by a second portion (210b) of the first housing structure (210) and a second portion (220b) of the second housing structure (220) that is parallel to the folding axis A and does not correspond to the sensor area (222). In this case, the second width (W2) may be formed to be longer than the first width (W1). According to one embodiment, the first part (220a) and the second part (220b) of the second housing structure (220) may have different distances from the folding axis A. The width of the recess is not limited to the illustrated example.

[0069] In one embodiment, the recess may have multiple widths due to the shape of the sensor area (222) or the asymmetrical shape of the first housing structure (210) and the second housing structure (220). According to one embodiment, the sensor area (222) may be formed to have a predetermined area adjacent to one corner of the second housing structure (220). However, the arrangement, shape, and size of the sensor area (222) are not limited to the illustrated example. For example, in another embodiment, the sensor area (222) may be provided in another corner of the second housing structure (220) or in any area between the upper corner and the lower corner.

[0070] In one embodiment, components for performing various functions built into the electronic device (200) may be exposed on the front of the electronic device (200) through the sensor area (222) or through one or more openings provided in the sensor area (222). In one embodiment, the components may include various types of sensors. The sensors may include, for example, at least one of a front camera, a receiver, or a proximity sensor. According to one embodiment, the sensor area (222) in the second housing structure (220) may be omitted or formed in a position different from that shown in the drawing.

[0071] According to one embodiment, at least a portion of the first housing structure (210) and the second housing structure (220) may be formed of a metallic or non-metallic material having a rigidity of a size selected to support the display (250). At least a portion formed of the metallic material may provide a ground plane of the electronic device (200) and may be electrically connected to a ground line formed on a printed circuit board disposed inside the foldable housing (201).

[0072] According to one embodiment, the first rear cover (215) is disposed on one side of the folding axis (A) on the rear surface of the electronic device (200) and may have, for example, a substantially rectangular periphery, the periphery of which may be wrapped by the first housing structure (210). Similarly, the second rear cover (225) is disposed on the other side of the folding axis (A) on the rear surface of the electronic device (200) and the periphery of which may be wrapped by the second housing structure (220).

[0073] According to one embodiment, the first rear cover (215) and the second rear cover (225) may have substantially symmetrical shapes with respect to the folding axis (A). However, the first rear cover (215) and the second rear cover (225) do not necessarily have mutually symmetrical shapes, and in another embodiment, the electronic device (200) may include the first rear cover (215) and the second rear cover (225) of various shapes. In another embodiment, the first rear cover (215) may be formed integrally with the first housing structure (210), and the second rear cover (225) may be formed integrally with the second housing structure (220).

[0074] According to one embodiment, the first rear cover (215), the second rear cover (225), the first housing structure (210), and the second housing structure (220) may form a space in which various components of the electronic device (200) (e.g., a printed circuit board or a battery) may be placed. According to one embodiment, one or more components may be placed or visually exposed on the rear surface of the electronic device (200). For example, at least a portion of the sub-display may be visually exposed through the first rear area (216) of the first rear cover (215). In another embodiment, one or more components or sensors may be visually exposed through the second rear area (226) of the second rear cover (225). In one embodiment, the sensors may include a proximity sensor and / or a rear camera.

[0075] According to one embodiment, a front camera exposed on the front side of the electronic device (200) through one or more openings provided in the sensor area (222) or a rear camera exposed through the second rear area (226) of the second rear cover (225) may include one or more lenses, an image sensor, and / or an image signal processor. A flash may include, for example, a light emitting diode or a xenon lamp. In some embodiments, two or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be arranged on one side of the electronic device (200).

[0076] Referring to FIG. 2B, the hinge cover may be configured to be disposed between the first housing structure (210) and the second housing structure (220) so as to cover an internal component (e.g., the hinge structure (230)). According to one embodiment, the hinge structure (230) may be covered by a portion of the first housing structure (210) and the second housing structure (220) or exposed to the outside depending on the state of the electronic device (200) (unfolded state, intermediate state, or folded state).

[0077] According to one embodiment, as illustrated in FIG. 2a, when the electronic device (200) is in an unfolded state (e.g., a fully unfolded state), the hinge structure (230) may be covered by the first housing structure (210) and the second housing structure (220) and not exposed. As another example, as illustrated in FIG. 2b, when the electronic device (200) is in a folded state (e.g., a fully folded state), the hinge structure (230) may be exposed to the outside between the first housing structure (210) and the second housing structure (220). As another example, when the first housing structure (210) and the second housing structure (220) are in an intermediate state where they are folded at a certain angle, the hinge structure (230) may be partially exposed to the outside between the first housing structure (210) and the second housing structure (220). However, in this case, the exposed area may be less than that in the completely folded state. In one embodiment, the hinge structure (230) may include a curved surface.

[0078] According to one embodiment, the display (250) may be placed on a space formed by the foldable housing (201). For example, the display (250) may be mounted on a recess formed by the foldable housing (201) and may be visible from the outside through the front of the electronic device (200). For example, the display (250) may constitute most of the front of the electronic device (200). Accordingly, the front of the electronic device (200) may include the display (250) and a portion of the first housing structure (210) adjacent to the display (250) and a portion of the second housing structure (220). And, the back of the electronic device (200) may include a first back cover (215), a portion of a first housing structure (210) adjacent to the first back cover (215), a second back cover (225), and a portion of a second housing structure (220) adjacent to the second back cover (225).

[0079] According to one embodiment, the display (250) may refer to a display in which at least a portion of the display can be transformed into a flat or curved surface. According to one embodiment, the display (250) may include a folding area (253), a first area (251) arranged on one side (e.g., the left side of the folding area (253) illustrated in FIG. 2A) with respect to the folding area (253), and a second area (252) arranged on the other side (e.g., the right side of the folding area (253) illustrated in FIG. 2A).

[0080] However, the division of the regions of the display (250) illustrated in FIG. 2A is exemplary, and the display (250) may be divided into a plurality of regions (for example, four or more or two) depending on the structure or function. For example, in the embodiment illustrated in FIG. 2A, the regions of the display (250) may be divided by a folding region (203) extending parallel to the folding axis (A), but in other embodiments, the regions of the display (250) may be divided based on another folding axis (for example, a folding axis parallel to the width direction of the electronic device).

[0081] According to one embodiment of the present disclosure, the display (250) may be coupled with or disposed adjacent to a touch panel equipped with a touch detection circuit and a pressure sensor capable of measuring the intensity (pressure) of a touch. For example, the display (250) may be coupled with or disposed adjacent to a touch panel that detects an electromagnetic resonance (EMR) stylus pen, as an example of a touch panel.

[0082] According to one embodiment, the first region (251) and the second region (252) may have an overall symmetrical shape centered on the folding region (253). However, unlike the first region (251), the second region (252) may include a cut notch depending on the presence of the sensor region (222), but may have a shape symmetrical with respect to the first region (251) in other regions. For example, the first region (251) and the second region (252) may include a portion having a symmetrical shape and a portion having an asymmetrical shape.

[0083] According to one embodiment, the edge thicknesses of the first region (251) and the second region (252) may be formed to be different from the edge thickness of the folding region (253). The edge thickness of the folding region (253) may be formed to be thinner than the thicknesses of the first region (251) and the second region (252). In terms of thickness, the first region (251) and the second region (252) may have an asymmetrical shape when the first region (251) and the second region (252) are viewed in cross-section. For example, the edge of the first region (251) may be formed to have a first radius of curvature, and the edge of the second region (252) may be formed to have a second radius of curvature that is different from the first radius of curvature. In another embodiment, the first region (251) and the second region (252) in terms of thickness may have a symmetrical shape when the first region (251) and the second region (252) are viewed in cross section.

[0084] Hereinafter, the operation of the first housing structure (210) and the second housing structure (220) and each area of ​​the display (250) according to the state of the electronic device (200) (e.g., folded state, unfolded state, or intermediate state) will be described.

[0085] According to one embodiment, when the electronic device (200) is in an unfolded state (e.g., FIG. 2a), the first housing structure (210) and the second housing structure (220) may be arranged to form an angle of 180 degrees and face the same direction. The surface of the first region (251) and the surface of the second region (252) of the display (250) may form an angle of 180 degrees with each other and face the same direction (e.g., toward the front of the electronic device). The folding region (253) may form the same plane as the first region (251) and the second region (252).

[0086] According to one embodiment, when the electronic device (200) is in a folded state (e.g., FIG. 2b), the first housing structure (210) and the second housing structure (220) may be arranged to face each other. The surface of the first region (251) and the surface of the second region (252) of the display (250) may form a narrow angle (e.g., between 0 and 10 degrees) with each other and may face each other. The folding region (253) may be formed as a curved surface having at least a portion of a predetermined curvature.

[0087] According to one embodiment, when the electronic device (200) is in an intermediate state, the first housing structure (210) and the second housing structure (220) may be arranged at a certain angle with respect to each other. The surface of the first region (251) and the surface of the second region (252) of the display (250) may form an angle that is larger than an angle in a folded state and smaller than an angle in an unfolded state. The folding region (253) may be formed as a curved surface having at least a certain curvature, and the curvature at this time may be smaller than that in a folded state.

[0088] FIG. 2c illustrates a fully unfolded state of the electronic device (200), and FIG. 2d may illustrate an intermediate state in which the electronic device (200) is partially unfolded. As described above, the electronic device (200) may be variable between a folded state and an unfolded state. According to one embodiment, the electronic device (200) may be folded in two ways: 'in-folding' in which the front surface of the electronic device (200) is folded to form an acute angle when viewed in the folding axis direction (e.g., the A-axis in FIG. 2a), and 'out-folding' in which the front surface of the electronic device (200) is folded to form an obtuse angle. For example, in the electronic device (200), in a folded state in an in-folding manner, a first side of the first housing structure (210) may face a third side of the second housing structure (220), and in a fully unfolded state, the first side of the first housing structure (210) and the third side of the second housing structure (220) may face the same direction (e.g., a direction parallel to the Z-axis).

[0089] Also, for example, the electronic device (200) may be folded in an out-folding manner so that the second side of the first housing structure (210) faces the fourth side of the second housing structure (220).

[0090] Additionally, the electronic device (200) may include multiple hinge axes (e.g., two mutually parallel hinge axes including the A-axis of FIG. 2A and another axis parallel to the A-axis), although not shown in the drawing, in which case the electronic device (200) may be folded in a 'multi-folding' manner that combines the in-folding and out-folding manners.

[0091] The above-mentioned in-folding type may refer to a state in which the display (250) is not exposed to the outside in a fully folded state. The above-mentioned out-folding type may refer to a state in which the display (250) is exposed to the outside in a fully folded state.

[0092] For convenience, the following description focuses on a state in which the electronic device (200) is folded in an in-folding manner, but it should be noted that these descriptions can also be applied to a state in which the electronic device (200) is folded in an out-folding manner.

[0093] FIG. 3a is an exploded perspective view of an electronic device (300) according to one embodiment, FIG. 3b is a plan view of a part of the electronic device (300) according to one embodiment, and FIG. 3c is a cross-sectional view of the electronic device (300) according to one embodiment.

[0094] Specifically, FIG. 3b is a plan view of the display assembly (350) in the electronic device (300) of FIG. 3a in an exploded state, and FIG. 3c is a cross-sectional view looking inside the electronic device (300) along the line BB' shown in FIG. 2b.

[0095] Referring to FIGS. 3A, 3B, and 3C, an electronic device (300) according to one embodiment (e.g., the electronic device (101) of FIG. 1 or the electronic device (200) of FIGS. 2A, 2B, 2C, and 2D) may be a foldable electronic device (300). For example, the electronic device (300) may be folded or unfolded about a folding axis (A).

[0096] However, the electronic device (300) of FIGS. 3A, 3B, and 3C is merely an example, and the size, shape, structure, and hinge axis of the electronic device (300) are not limited thereto. For example, the electronic device (300) illustrated in the drawings includes a folding axis (A) in the long-side direction (e.g., Y-axis direction) of the electronic device (300), but the electronic device (300) according to one embodiment may include a folding axis in the short-side direction (e.g., X-axis direction).

[0097] Hereinafter, any content overlapping with the above will be omitted for explanation, and it is to be understood that, in the electronic device (300), some components and structures may be replaced, added, or omitted within a range easily understandable to those skilled in the art by referring to the drawings and descriptions below. In addition, at least one component or feature of the embodiments described above may be combined in the electronic device (300) unless it is technically clearly impossible.

[0098] In one embodiment, the electronic device (300) may include at least a portion of a foldable housing (310) (e.g., the foldable housing (201) of FIGS. 2A, 2B, 2C, and 2D), a display assembly (350) (e.g., the display module (160) of FIG. 1 or the display (250) of FIGS. 2A to 2D), a hinge unit (370), and a wing plate (400).

[0099] In one embodiment, the foldable housing (310) may form at least a portion of the exterior of the electronic device (300). The foldable housing (310) may include a first housing (301) (e.g., the first housing structure (210) of FIGS. 2a, 2b, 2c, and 2d) and a second housing (302) (e.g., the second housing structure (220) of FIGS. 2a, 2b, 2c, and 2d).

[0100] In one embodiment, a hinge unit (370) may be arranged between the first housing (301) and the second housing (302). The first housing (301) and the second housing (302) may be foldably connected to each other by the hinge unit (370).

[0101] In one embodiment, the angle or distance between the first housing (301) and the second housing (302) may vary depending on whether the electronic device (300) is in a flat state (or unfolding state), a folded state, or an intermediate state. For example, the intermediate state may include all states between the unfolded state and the folded state.

[0102] In one embodiment, the first housing (301) and the second housing (302) may provide a space in which a display assembly (350) is placed. The display assembly (350) may be a foldable flexible display assembly (350).

[0103] In one embodiment, the display assembly (350) may be composed of multiple layers (350a, 350b, 350c). For example, the second layer (350b) may be a display panel, and the first layer (350a) and the third layer (350c) may collectively refer to multiple components arranged on the front and back surfaces of the display panel, respectively.

[0104] For example, the first layer (350a) may include at least a portion of a protective film, a glass layer made of foldable glass, and a polarizing layer such as a polarizing film. In addition, the third layer (350c) may include at least a portion of a polymer layer made of a polymer polymer, and a metal sheet layer or reinforcing layer for reinforcing the rigidity of the second layer (350b).

[0105] However, the above-described multiple layers (350a, 350b, 350c) are merely a schematic description of some of the multiple components of the display assay (350), and the actual implementation of the display assay (350) is not limited thereto, and the display assay (350) may further include various components and additional layers.

[0106] For example, the display assembly (350) may include a first region (351) (e.g., the first region (251) of FIG. 2C), a second region (352) (e.g., the second region (252) of FIG. 2C), and a folding region (353) between the first region (351) and the second region (352) (e.g., the folding region (253) of FIG. 2C).

[0107] In one embodiment, the first housing (301) may be positioned facing the first area (351) of the display assembly (350) to support the first area (351) of the display assembly (350). The second housing (302) may be positioned facing the second area (352) of the display assembly (350) to support the second area (352) of the display assembly (350).

[0108] In one embodiment, the hinge unit (370) may be disposed between the first housing (301) and the second housing (302) to connect the first housing (301) and the second housing (302). For example, a hinge structure constituting one electronic device (300) may include a plurality of hinge units (370a, 370b). The plurality of hinge units (370a, 370b) may be disposed spaced apart from each other on both sides in the direction of the folding axis (A) (e.g., the Y-axis direction).

[0109] For example, as shown in FIG. 3A, two hinge units (370a, 370b) may be respectively arranged at opposite ends (e.g., an end in the +Y direction and an end in the -Y direction) of the electronic device (300) along the folding axis (A). However, the number and arrangement of the hinge units (370) are not limited thereto.

[0110] In one embodiment, the hinge unit (370) can implement a folding or unfolding operation of the electronic device (300). The hinge unit (370) can operate between a folded state in which the first region (351) and the second region (352) face each other, and an unfolded state in which the first region (351) and the second region (352) do not face each other. The hinge unit (370) can generate a force to maintain a specific folding state of the electronic device (300).

[0111] For example, when the electronic device (300) is in a folded state, the hinge unit (370) can generate a force (e.g., a closing detent force) to maintain the electronic device (300) in the folded state.

[0112] For example, when the electronic device (300) is in an unfolded state, the hinge unit (370) can generate a force (e.g., open detent force) that maintains the electronic device (300) in the unfolded state.

[0113] For example, when the electronic device (300) is in an intermediate state, the hinge unit (370) can generate a force (e.g., a free stop force) to maintain the electronic device (300) in the intermediate state.

[0114] In one embodiment, the wing plate (400) can support the display assembly (350). The wing plate (400) can be positioned between the hinge unit (370) and the display assembly (350). The wing plate (400) can prevent the display assembly (350) from sagging due to its own weight. Alternatively, the wing plate (400) can absorb the weight and / or external force acting on the display assembly (350), thereby preventing the display assembly (350) from being damaged.

[0115] In one embodiment, the wing plate (400) may be provided as a pair. For example, the wing plate (400) may include a first wing plate (400a) and a second wing plate (400b). The first wing plate (400a) may support a first region (351) of the display assembly (350), and the second wing plate (400b) may support a second region (352) of the display assembly (350).

[0116] In one embodiment, the wing plate (400) may be fixed to the hinge unit (370) via a fixing member (390). The wing plate (400) may move in conjunction with the operation of the hinge unit (370) and may assist the foldable operation of the foldable housing (310) and / or the display assembly (350).

[0117] FIG. 4a is an exploded perspective view of a plurality of sheets (410) according to one embodiment, and FIG. 4b is a plan view of a plurality of sheets (410) according to one embodiment.

[0118] Referring to FIGS. 4A and 4B, a wing plate according to one embodiment (e.g., wing plate (400) of FIGS. 3A, 3B, and 3C) may be formed by stacking a plurality of sheets (410).

[0119] The plurality of sheets (410) illustrated in FIGS. 4a and 4b are exemplary of the raw materials or pre-processing state that constitute the wing plate (400), and the size, shape, structure, arrangement, number, and material of the plurality of sheets (410) that constitute the wing plate (400) in one embodiment of the present document are not limited thereto.

[0120] Hereinafter, referring to the drawings, a plurality of sheets (410) and a wing plate (400) are described based on a plurality of sheets (410) composed of nine sheets and having uniform thickness. However, this is merely an example, and the number, structure, shape, material, or thickness of the plurality of sheets (410) actually implemented are not limited thereto. For example, the thickness of at least one sheet may be thicker or thinner than that of the other sheets.

[0121] Hereinafter, descriptions will be omitted of overlapping contents with those described above, and it will be understood that some configurations and structures may be replaced, added, or omitted within a range that can be easily understood by those skilled in the art with reference to the drawings and descriptions below in the wing plate (400) and the electronic device including the same (e.g., the electronic device (101) of FIG. 1, the electronic device (200) of FIGS. 2A, 2B, 2C, and 2D, or the electronic device (300) of FIGS. 3A, 3B, and 3C). In addition, at least one configuration or feature of the embodiments described above may be combined in the wing plate (400) and the electronic device (300) including the same, unless it is technically clearly impossible.

[0122] In one embodiment, the plurality of sheets (410) may include an outer sheet (410a) and an inner sheet (410b), for example, a plurality of outer sheets (410a) and at least one inner sheet (410b).

[0123] In one embodiment, the outer sheet (410a) may be a sheet that is positioned at the outermost side with respect to the center of the wing plate (400), or may be a sheet that is visually exposed to the outside of the wing plate (400). The inner sheet (410b) may be a sheet that is positioned on the inside of the outer sheet (410a), and may be a sheet that is not visually exposed to the outside of the wing plate (400), or may be a sheet that is only partially exposed.

[0124] In one embodiment, the plurality of outer sheets (410a) may include a first outer sheet (411) and a second outer sheet (419). The first outer sheet (411) and the second outer sheet (419) may face opposite directions.

[0125] For example, based on the state in which the wing plate (400) is assembled to the electronic device (300) (e.g., the state in FIG. 3c), the first outer sheet (411) may be a sheet facing a display (e.g., the display assembly (350) in FIG. 3c). In addition, for example, based on the state in which the wing plate (400) is assembled to the electronic device (300) (e.g., the state in FIG. 3c), the second outer sheet (419) may be a sheet facing a hinge unit (e.g., the hinge unit (370) in FIG. 3c).

[0126] In one embodiment, the first outer sheet (411) may have a center-line average surface roughness (CLA) of between 1.0 Ra and 5.0 Ra. Since the first outer sheet (411) is a sheet facing the display assay (350), bonding strength with other components (e.g., tape) placed on the front side of the wing plate (400) may be required. The first outer sheet (411) may be subjected to a physical, optical, or chemical surface treatment (e.g., sand blasting treatment) to improve surface bonding strength.

[0127] For example, if the surface roughness of the first outer sheet (411) is greater than 5.0 Ra, the synthetic resin surface protecting the carbon fibers of the plurality of sheets (410) may be damaged, the carbon fibers may be exposed to the outside, and the carbon fibers may be damaged or come into contact with other components, causing a circuit short.

[0128] For example, if the surface roughness of the first outer sheet (411) is less than 1.0 Ra, the surface bonding force for bonding the wing plate (400) to another part may be reduced.

[0129] In one embodiment of the present document, the first outer sheet (411) has a centerline average surface roughness of between 1.0 Ra and 5.0 Ra, thereby preventing carbon fibers of the plurality of sheets (410) from being exposed to the outside and providing surface bonding strength.

[0130] In one embodiment, the inner sheet (410b) may be provided in multiples, for example, may be composed of a total of seven sheets. The inner sheet (410b) may include at least some of the first inner sheet (412), the second inner sheet (413), the third inner sheet (414), the fourth inner sheet (415), the fifth inner sheet (416), the sixth inner sheet (417), and the seventh inner sheet (418). The first inner sheet (412), the second inner sheet (413), the third inner sheet (414), the fourth inner sheet (415), the fifth inner sheet (416), the sixth inner sheet (417), and the seventh inner sheet (418) may be sequentially arranged and laminated between the first outer sheet (411) and the second outer sheet (419).

[0131] In one embodiment, each of the plurality of sheets (410) may be formed of unidirectional (UD) fibers that are oriented in a single direction and have relatively higher stiffness in that single direction than in the other directions. The UD fibers may be unidirectional fibers or unidirectionally oriented fibers.

[0132] In one embodiment of the present document, a wing plate (400) formed of a plurality of sheets (410) made of UD fibers is relatively light in weight, easy to process, and can easily implement a target shape compared to a case made of a metal material.

[0133] In addition, in one embodiment of the present document, a wing plate (400) having a laminated structure of a plurality of sheets (410) may be advantageous in implementing a wing plate (400) with a relatively thin thickness, and may be easy to control the thickness.

[0134] In one embodiment, any one of the plurality of sheets (410) may be oriented in a different direction from other adjacent sheets stacked among the plurality of sheets (410). When the directions in which each of the plurality of sheets (410) is oriented are different, the directions in which each sheet is rigid may also be different. Therefore, the wing plate (400) formed by stacking the plurality of sheets (410) may provide high rigidity in a plurality of directions.

[0135] In one embodiment, any one of the plurality of sheets (410) may be oriented in a direction perpendicular to another sheet that is adjacently stacked among the plurality of sheets (410). For example, as illustrated in FIG. 4A, the first outer sheet (411), the second inner sheet (413), the fourth inner sheet (415), the sixth inner sheet (417), and the second outer sheet (419) may be oriented in a direction parallel to the Y-axis. Additionally, for example, the first inner sheet (412), the third inner sheet (414), the fifth inner sheet (416), and the seventh inner sheet (418) may be oriented in a direction parallel to the X-axis.

[0136] In one embodiment of the present document, since the directions in which each of the plurality of sheets (410) is oriented are different or perpendicular, the wing plate (400) can provide high rigidity in the transverse and longitudinal directions, and can also implement uniform tensile strength in the transverse and longitudinal directions, and can provide stable durability and rigidity.

[0137] In one embodiment, the plurality of sheets (410) may be prepreg sheets. For example, each of the plurality of sheets (410) may be manufactured by impregnating carbon fibers in a unidirectional liquid synthetic resin (e.g., epoxy), and the wing plate (400) may be formed by thermally processing the plurality of laminated sheets (410).

[0138] In one embodiment of the present document, a wing plate (400) composed of a plurality of sheets (410) which are prepreg sheets made of UD fibers may have relatively fewer or no uneven structures on the surface compared to a general woven fabric, and may form a smoother and softer surface, so that it may be advantageous in managing the smoothness and roughness (e.g., uneven structure ratio) of the surface of the wing plate (400).

[0139] For example, if the wing plate (400) has many uneven structures and thus has high illuminance, the uneven structures of the wing plate (400) may press the display assembly (350) and deteriorate the image quality. In one embodiment of the present document, the wing plate (400) composed of a plurality of sheets (410) which are prepreg sheets made of UD fibers can reduce the uneven structures and improve illuminance, thereby improving the performance of the display assembly (350) of the electronic device (300).

[0140] In one embodiment, each of the plurality of sheets (410) may be made of any one of carbon fiber, glass fiber, and aramid fiber. Alternatively, each of the plurality of sheets (410) may be made of a blended fabric of at least two of carbon fiber, glass fiber, and aramid fiber. The material of the plurality of sheets (410) may be selected in consideration of the required physical properties, production cost, and / or performance of the wing plate (400).

[0141] In one embodiment, the plurality of sheets (410) may be formed of a plurality of fiber sheets and a liquid synthetic resin. For example, each of the plurality of sheets (410) may be formed by impregnating a plurality of fiber sheets as raw materials with a liquid synthetic resin. The liquid synthetic resin may have a content of 30 to 60% of the weight of the plurality of fiber sheets. As described later in FIG. 9, during the process of thermoforming the plurality of sheets (410), the liquid synthetic resin may harden and bond the plurality of fiber sheets to form a laminated wing plate (400).

[0142] In one embodiment, the inner sheet (410b) may include a punching hole (410c) provided in at least a portion of the inner sheet. The punching hole (410c) may form a structure and a height difference of the wing plate (400). If a portion of the inner sheet (410b) is formed open, the wing plate (400) including it may have a step formed in the corresponding portion, and as a result, the three-dimensional structure and step shape of the wing plate (400) may be implemented.

[0143] For example, as illustrated in FIG. 4b, the first inner sheet (412) may include a first punching hole (412a), the second inner sheet (413) may include a second punching hole (413a), the third inner sheet (414) may include a third punching hole (414a), the fourth inner sheet (415) may include a fourth punching hole (415a), the fifth inner sheet (416) may include a fifth punching hole (416a), the sixth inner sheet (417) may include a sixth punching hole (417a), and / or the seventh inner sheet (418) may include a seventh punching hole (418a).

[0144] In one embodiment, the configuration included within the C region of FIG. 4B may form a single wing plate (400). A plurality of sheets (410) may be laminated, thermoformed, and cut and / or punched. Accordingly, the configurations of the plurality of sheets (410) within the C region may be laminated to form a single wing plate (400).

[0145] In one embodiment, the positions, shapes, and sizes of at least some of the plurality of punching holes (410c) may be different from each other. By designing the shapes and sizes of the plurality of punching holes (410c), the plurality of sheets (410) can implement a complex structure of the wing plate (400).

[0146] In one embodiment, the first outer sheet (411) and / or the second outer sheet (419) may be continuous over the entire area of ​​the wing plate (400). Alternatively, the first outer sheet (411) and / or the second outer sheet (419) may not include a punching hole (410c) or an opening.

[0147] For example, when a punching hole (410c) is formed in the first outer sheet (411) and / or the second outer sheet (419), fibers may clump at the edge of the punching hole (410c), the edge may protrude and appear emphasized, or an error may occur in the step height.

[0148] In one embodiment of the present document, the first outer sheet (411) and / or the second outer sheet (419) are continuous over the entire area of ​​the wing plate (400), thereby improving the smoothness and roughness of the surface of the wing plate (400) and providing improved product surface quality.

[0149] FIG. 5a is a perspective view of a wing plate (400) according to one embodiment, FIG. 5b is a plan view of a wing plate (400) according to one embodiment, and FIG. 5c is a rear view of a wing plate (400) according to one embodiment.

[0150] Specifically, FIGS. 5b and 5c are plan views and rear views that emphasize the step structure of the wing plate (400) of FIG. 5a.

[0151] Referring to FIGS. 5a, 5b and 5c, a wing plate (400) according to one embodiment may include at least a portion of a step region (420), an open region (425) and a protruding region (427).

[0152] Hereinafter, any content that overlaps with the above-described content will be omitted for explanation, and it is to be understood that some components and structures of the wing plate (400) may be replaced, added, or omitted within a range easily understandable to those skilled in the art by referring to the drawings and descriptions below. In addition, at least one component or feature of the embodiments described above may be combined with the wing plate (400) unless it is technically clearly impossible.

[0153] In one embodiment, the wing plate (400) may include an arbitrary reference area (421). The reference area (421) may be any area where no step is formed. Alternatively, as illustrated in FIG. 6A described below, the reference area (421) may be an area where no punching hole (e.g., the punching hole (410c) of FIG. 4B) is formed.

[0154] In one embodiment, the step region (420) may be a region having a different thickness compared to another region of the wing plate (400) (e.g., the reference region (421)). For example, as illustrated in FIGS. 5b and 5c, the step region (420) may be a region having a lower height or a thinner thickness than the reference region (421).

[0155] In one embodiment, the wing plate (400) may include a plurality of step regions (420). Alternatively, the wing plate (400) may include a plurality of step regions (420) having different thicknesses.

[0156] In one embodiment, the plurality of step regions (420) may include a first step region (422) and a second step region (423) that is thinner than the first step region (422). For example, the first step region (422) may be a region in which the step region (420) is formed on the back surface of the wing plate (400) and the step region (420) is not formed on the front surface, and the second step region (423) may be a region in which step regions are formed on both the back surface and the front surface of the wing plate (400). Alternatively, the second step region (423) may be a region in which the number of stacked plurality of sheets (e.g., the plurality of sheets (410) of FIGS. 4A and 4B) is relatively smaller than the first step region (422).

[0157] However, this is merely an exemplary description, and the structure and thickness of the multiple step regions (420) are not limited thereto. For example, the first step region (422) and the second step region (423) may be two regions having different height differences from the reference region (421) on one surface of the wing plate (400). Exemplary structures of the reference region (421), the first step region (422), and the second step region (423) are described with reference to FIGS. 6A, 6B, and 6C.

[0158] In one embodiment of the present invention, the step area (420) can reduce or eliminate interference or contact between the wing plate (400) and the hinge unit (e.g., the hinge unit (370) of FIGS. 3A, 3B, and 3C) and / or the display (e.g., the display assembly (350) of FIGS. 3A, 3B, and 3C). Alternatively, the step area (420) can be a structure for fastening a fixing member (e.g., the fixing member (390) of FIG. 3C).

[0159] In one embodiment, the open area (425) may be an area that opens from the front to the back of the wing plate (400). The open area (425) may be an area for a part of the hinge unit (370) to pass through, and may be an area for the fixing member (390) to be fastened. Alternatively, the open area (425) may be an area for reducing the weight of the wing plate (400), and the open area (425) may prevent or reduce interference with other parts of the wing plate (400). The open area (425) may be formed by punching through a CNC or cutting process after the thermal forming of the wing plate (400).

[0160] In one embodiment, the protruding region (427) may be a region that protrudes forward (e.g., in the +Z direction or in the direction toward the display assembly (350)) or backward (e.g., in the -Z direction or in the direction toward the hinge unit (370)) relative to another adjacent region (e.g., the reference region (421)) of the wing plate (400). The protruding region (427) may be a region to which a fixing member (390) for fixing the wing plate (400) to the hinge unit (370) or the foldable housing (310) is fastened.

[0161] FIG. 6a is a cross-sectional view of a portion of a wing plate (400) according to one embodiment, FIG. 6b is a cross-sectional view of a portion of a wing plate (400) according to one embodiment, and FIG. 6c is a cross-sectional view of a portion of a wing plate (400) according to one embodiment.

[0162] Specifically, FIGS. 6A, 6B, and 6C are cross-sectional views for explaining the laminated structure of the reference region (421), the first step region (422), and the second step region (423) of FIG. 5A. In addition, FIGS. 6A, 6B, and 6C may be schematic drawings for convenience of understanding showing a state before a plurality of sheets (410) are thermally processed or compressed. The plurality of punching holes of FIGS. 6A, 6B, and 6C (e.g., the punching hole (410c) of FIG. 4B) may be thermally processed thereafter to be filled by adjacent sheets, and a step may be formed in the corresponding region.

[0163] Referring to FIGS. 6a, 6b and 6c, the wing plate (400) according to one embodiment may have a different number of sheets (410) stacked in a plurality of regions (e.g., a reference region (421), a first step region (422) and a second step region (423)).

[0164] In one embodiment, referring to FIG. 6A, the reference area (421) of the wing plate (400) may be an area where all of the plurality of sheets (410) are stacked. Alternatively, the reference area (421) may refer to any other area adjacent to the first step area (422) or the second step area (423). Alternatively, the reference area (421) of the wing plate (400) may be an area where no punching hole (e.g., the punching hole (410c) of FIG. 4B) is formed in the plurality of sheets (410).

[0165] However, the reference area (421) of FIG. 6A is only an example, and the reference area (421) may be arbitrarily set for comparison with the first step area (422) or the second step area (423). For example, the reference area (421) may be an area thicker than the first step area (422) or the second step area (423). Alternatively, the reference area (421) may be an area that occupies a majority of the area of ​​the wing plate (400).

[0166] In one embodiment, referring to FIGS. 6B and 6C, the first step region (422) and the second step region (423) may have different numbers of stacked sheets (410) compared to the reference region (421). For example, in the wing plate (400), the step region (420) that is thinner than other regions may have a smaller number of stacked sheets (410) compared to other regions.

[0167] In one embodiment, referring to FIG. 6b, in the first step region (422), the plurality of sheets (410) may have at least some (412a, 413a, 414a, 415a) of the plurality of punching holes (410c) formed therein. For example, the first step region (422) may be a region in which the first punching hole (412a), the second punching hole (413a), the third punching hole (414a), and the fourth punching hole (415a) are formed.

[0168] In one embodiment, the first inner sheet (412), the second inner sheet (413), the third inner sheet (414), and the fourth inner sheet (415), in which at least some (412a, 413a, 414a, 415a) of the plurality of punching holes (410c) are formed, may not be laminated in the first step region (422). Accordingly, the first step region (422) may be composed of the first outer sheet (411), the fifth inner sheet (416), the sixth inner sheet (417), the seventh inner sheet (418), and the second outer sheet (419).

[0169] In one embodiment, referring to FIG. 6c, in the second step region (423), a plurality of sheets (410) may have some (413a, 414a, 415a, 416a, 418a) of the plurality of punching holes (410c) formed therein. For example, the second step region (423) may be a region in which the second punching hole (413a), the third punching hole (414a), the fourth punching hole (415a), the fifth punching hole (416a), and the seventh punching hole (418a) are formed.

[0170] In one embodiment, the second inner sheet (413), the third inner sheet (414), the fourth inner sheet (415), the fifth inner sheet (416), and the seventh inner sheet (418), in which some of the plurality of punching holes (410c) (413a, 414a, 415a, 416a, 418a) are formed, may not be laminated in the second step region (423). Accordingly, the second step region (423) may be composed of the first outer sheet (411), the first inner sheet (412), the sixth inner sheet (417), and the second outer sheet (419).

[0171] In one embodiment, in an area where the number of stacked plurality of sheets (410) is small, the wing plate (400) may be thin and a relatively step may be formed. For example, in a second step area (423) that is thinner than the first step area (422), the number of stacked plurality of sheets (410) may be smaller than that in the first step area (422). Referring to FIGS. 6b and 6c, the first step area (422) may be composed of a total of five plurality of sheets (410), and the second step area (423) may be composed of a total of four plurality of sheets (410). However, this is merely an exemplary description, and the number and arrangement of the plurality of sheets (410) constituting the step area (420) are not limited thereto and may be implemented in various ways.

[0172] In one embodiment, the wing plate (400) may form a step area (420) through at least one punching hole (410c) formed in each of the plurality of sheets (410). If the step area (420) is formed by performing a cutting process or CNC (computer numerical control) on the wing plate (400), the continuity of the wing plate (400) may be lost, the rigidity and durability may be reduced, and burrs may be formed. In addition, precise height implementation of the wing plate (400) may be limited, expensive cutting equipment may be required, or errors may occur during the cutting process.

[0173] According to one embodiment of the present document, a wing plate (400) can easily and simply form a step area (420) by forming punching holes (410c) in a plurality of sheets (410), can precisely implement a step at a target location, and can reduce or suppress the formation of burrs. In addition, the wing plate (400) according to one embodiment of the present document can reduce the difficulty of processing, secure economic feasibility in manufacturing, and reduce or prevent deterioration in the durability and rigidity of the wing plate (400).

[0174] Figure 7 is a cross-sectional view of a portion of a wing plate (400) according to one embodiment.

[0175] Referring to FIG. 7, a protruding area (427) according to one embodiment may be a plurality of sheets (410) in which at least some of the plurality of sheets (410) are continuous from another area.

[0176] In one embodiment, the protruding region (427) may be a region that protrudes forward (e.g., in the +Z direction) or backward (e.g., in the -Z direction) relative to another adjacent region (e.g., the reference region (421)) of the wing plate (400). A fastening hole (428) may be provided at the center of the protruding region (427). A fastening member (e.g., the fastening member (390) of FIG. 3C) may be positioned to penetrate the fastening hole (428) to fasten the wing plate (400) to another structure. The fastening hole (428) may be formed by punching through a CNC or cutting process after the wing plate (400) is thermally formed.

[0177] In one embodiment, the protruding region (427) may be continuous and extend from at least a portion of the plurality of sheets (410) from adjacent other regions of the wing plate (400). For example, as illustrated in FIG. 7, the protruding region (427) may be continuous from the reference region (421) to the first outer sheet (411), the fifth inner sheet (416), the sixth inner sheet (417), the seventh inner sheet (418), and the second outer sheet (419).

[0178] In one embodiment, since the plurality of sheets (410) extend continuously from adjacent other areas to the protruding area (427), the wing plate (400) can reduce or prevent a decrease in rigidity and durability in the protruding area (427).

[0179] In one embodiment, if a cutting process, a CNC (computer numerical control) process, and / or a thermal processing process are performed on the wing plate (400) to form the protruding area (427), the continuity of the wing plate (400) may be lost, durability may be reduced, and burrs may be formed. In addition, precise height implementation of the wing plate (400) may be limited, expensive cutting equipment may be required, or errors may occur during the cutting process. In addition, the protruding area (427) may be at risk of being damaged by the torque and pressure of the fixing member (390) during the process of fixing the fixing member (390).

[0180] A wing plate (400) according to an embodiment of the present document can form a protruding area (427) while maintaining the continuity of at least a portion of a plurality of sheets (410), and can reduce or suppress the formation of burrs. In addition, the wing plate (400) according to an embodiment of the present document can reduce the difficulty of processing, secure economic feasibility in manufacturing, and reduce or prevent the deterioration of durability and rigidity. In addition, the wing plate (400) can reduce or prevent the risk of damage to the protruding area (427) during the process of fixing the fixing member (390).

[0181] In one embodiment, the protruding region (427) may be included in a step region (e.g., the step region (420) of FIGS. 5A, 5B, and 5C). As illustrated in FIG. 7, the protruding region (427) may be thinner than another adjacent region (e.g., the reference region (421)), and the number of sheets (410) to be stacked may be different.

[0182] For example, when developing from the reference area (421) to the protruding area (427), the first inner sheet (412), the second inner sheet (413), the third inner sheet (414), and the fourth inner sheet (415) may be omitted by punching holes (e.g., the punching hole (410c) in FIG. 4B), and the first outer sheet (411), the fifth inner sheet (416), the sixth inner sheet (417), the seventh inner sheet (418), and the second outer sheet (419) may constitute the protruding area (427).

[0183] In one embodiment, by reducing the number of sheets (410) forming the protruding area (427), the wing plate (400) can form a step in the protruding area (427), and the forming of the protruding area (427) can be made simple and easy.

[0184] FIG. 8a is a perspective view of a wing plate (400) according to one embodiment, FIG. 8b is a perspective view of a wing plate (400) and a connecting member (461) according to one embodiment, and FIG. 8c is an exploded perspective view of a wing plate (400) and a connecting member (461) according to one embodiment.

[0185] Referring to FIGS. 8a, 8b and 8c, a wing plate (400) according to one embodiment may include a joining region (450) and a joining member (461).

[0186] Hereinafter, any content that overlaps with the above-described content will be omitted for explanation, and it is to be understood that some components and structures of the wing plate (400) may be replaced, added, or omitted within a range easily understandable to those skilled in the art by referring to the drawings and descriptions below. In addition, at least one component or feature of the embodiments described above may be combined with the wing plate (400) unless it is technically clearly impossible.

[0187] In one embodiment, the bonding region (450) may be a region having a different thickness than adjacent other regions of the wing plate (400). For example, the bonding region (450) may be an example of a step region (e.g., step region (420) of FIGS. 5A, 5B, and 5C) and / or an open region (e.g., open region (425) of FIGS. 5A, 5B, and 5C).

[0188] In one embodiment, a joining member (461) may be joined to a joining region (450). The joining member (461) may be joined to a wing plate (400) to form a countergradient structure or an undercut structure. Since a wing plate (400) composed of a plurality of sheets (410) may have limitations in forming a countergradient or undercut structure, a separate joining member (461) may be joined to the wing plate (400) so that the wing plate (400) may include various non-limiting structures and shapes.

[0189] In one embodiment, referring to FIG. 8A, the bonding region (450) may include at least one of a first fastening structure (451) and a second fastening structure (452). The first fastening structure (451) and the second fastening structure (452) may secure and / or support the bonding member (461).

[0190] In one embodiment, the first fastening structure (451) may be an area that is open from one side of the wing plate (400) to the other side so that the fastening member (461) may be positioned therethrough. The second fastening structure (452) may be a step or groove that is grooved inward from the outer surface of the wing plate (400) so that the fastening member (461) may be secured therein.

[0191] In one embodiment, referring to FIG. 8b, the wing plate (400) may include a plurality of connecting members (461), and the plurality of connecting members (461) may include a first connecting member (461a) and a second connecting member (461b). The first connecting member (461a) and the second connecting member (461b) may have different shapes.

[0192] In one embodiment, the joining member (461) may be joined to the wing plate (400) by an insert injection method. For example, the wing plate (400) may be placed in a mold, and the joining member (461) may be injected into the wing plate (400) through an insert injection process of injecting synthetic resin. When the insert injection method is used, the joining member (461) may reduce or eliminate the risk of being separated or detached from the joining area (450), and the joining member (461) may be stably joined to the wing plate (400).

[0193] In one embodiment, referring to FIG. 8c, the first coupling member (461a) can be separated into a first coupling portion (461a-1) and a second coupling portion (461a-2). The first coupling portion (461a-1) and the second coupling portion (461a-2) are structures for being fixed by penetrating the first fastening structure (451) of the coupling area (450), and are respectively arranged to face each other on both sides of the wing plate (400) so as to be mutually coupled and assembled to the wing plate (400). The first coupling portion (461a-1) and the second coupling portion (461a-2) can be mutually structurally coupled, and / or can be coupled by an adhesive material.

[0194] In one embodiment, the joining member (461) may be separately injected or manufactured from the wing plate (400) and joined and / or bonded to the joining area (450) of the wing plate (400). For example, the joining member (461) may be separately injected or molded to have a shape corresponding to the first joining structure (451) and the second joining structure (452) of the wing plate (400). When the joining member (461) is formed separately, the material of the joining member (461) may be set in various ways, and the rigidity or elasticity may be implemented in various ways.

[0195] For example, the bonding member (461) may be made of a synthetic resin. For example, the bonding member (461) may be made of at least one of polycarbonate (PC), polycarbonate containing glass fiber, polycarbonate containing carbon fiber, polyamide, polyamide containing glass fiber, polyamide containing carbon fiber, polyetheretherketone, polyetheretherketone containing glass fiber, or polyetheretherketone containing carbon fiber. The bonding member (461) may improve rigidity by including glass fiber and carbon fiber in the synthetic fiber, and the content may not be limited.

[0196] Figure 9 is a flowchart for a method (500) for manufacturing a wing plate (400) according to one embodiment.

[0197] Referring to FIG. 9, a method (500) for manufacturing a wing plate (400) according to one embodiment may include at least some of an operation (510) of stacking a plurality of sheets (410), a thermoforming operation (530), a wing plate (400) forming operation (550), and a wing plate (400) washing operation (570).

[0198] Hereinafter, the overlapping content with the above-described content will be omitted and described, and the manufacturing target of the manufacturing method (500) of the wing plate (400) may be the above-described wing plate (400), or may be a different wing plate (400). In addition, in the wing plate (400) that is the manufacturing target of the manufacturing method (500), it goes without saying that some components and structures may be replaced, added, or omitted within a range that can be easily understood by those skilled in the art with reference to the drawings and descriptions below. In addition, in the wing plate (400) that is the manufacturing target of the manufacturing method (500) of the wing plate (400), at least one component or feature of the embodiments described above may be combined, unless it is technically clearly impossible.

[0199] In one embodiment, the operation (510) of stacking a plurality of sheets (410) may be performed by stacking and arranging a plurality of fiber sheets in a prepreg state. The operation (510) of stacking a plurality of sheets (410) may be performed by removing a release paper attached to a plurality of sheets (410) in a prepreg state and sequentially placing them on a jig.

[0200] In one embodiment, each of the plurality of sheets (410) may be made of uni-directional (UD) fibers that are oriented in a single direction and have relatively higher stiffness in that single direction than in the other directions.

[0201] In one embodiment, the operation (510) of stacking a plurality of sheets (410) may be performed such that any one of the plurality of sheets (410) is oriented in a different direction (e.g., vertical direction) from another adjacent sheet of the plurality of sheets (410).

[0202] In one embodiment, the thermoforming operation (530) may position and thermoform a plurality of laminated sheets (410) in a mold. The plurality of sheets (410) may be formed by being impregnated with a synthetic resin, and since the synthetic resin exhibits a curing reaction upon exposure to high temperatures for a certain period of time, the plurality of sheets (410) may be thermoformed.

[0203] For example, the thermoforming operation (530) may be performed at a temperature of 145 to 155 degrees Celsius, under a pressure of 180 to 200 bar, with a preheating time of 10 to 20 seconds, for about 400 seconds. Alternatively, the thermoforming operation (530) may be performed at a temperature of 150 to 180 degrees Celsius, for 400 to 1800 seconds. For example, the thickness of the plurality of sheets (410) after thermoforming may be 0.85 mm.

[0204] In one embodiment, the wing plate (400) forming operation (550) may form the wing plate (400) by cutting and / or punching a plurality of thermoformed sheets (410). The wing plate (400) forming operation (550) may form the shape of the product by processing the outer surface and opening shape of the product by rough machining and / or finishing machining.

[0205] For example, the wing plate (400) forming operation (550) can form the wing plate (400) by cutting the exterior and open structure of the wing plate (400) to a certain depth (e.g., 0.3 mm) through CNC (computer numerical control) processing.

[0206] In one embodiment, the wing plate (400) cleaning operation (570) can remove fine carbon fibers generated in the wing plate (400) forming operation (550) and remove foreign substances from the surface of the wing plate (400).

[0207] Figure 10 is a flowchart for a method (500) for manufacturing a wing plate (400) according to one embodiment.

[0208] Referring to FIG. 10, a method (500) for manufacturing a wing plate (400) according to one embodiment may further include at least some of a raw material fiber impregnation operation (501), a punching hole (410c) forming operation (505), and a sand blasting process operation (560).

[0209] Hereinafter, the overlapping content with the above-described content will be omitted and described, and the manufacturing target of the manufacturing method (500) of the wing plate (400) may be the above-described wing plate (400), or may be a different wing plate (400). In addition, in the wing plate (400) that is the manufacturing target of the manufacturing method (500), it goes without saying that some components and structures may be replaced, added, or omitted within a range that can be easily understood by those skilled in the art with reference to the drawings and descriptions below. In addition, in the wing plate (400) that is the manufacturing target of the manufacturing method (500) of the wing plate (400), at least one component or feature of the embodiments described above may be combined, unless it is technically clearly impossible.

[0210] In one embodiment, the raw material fiber impregnation operation (501) and the punching hole (410c) forming operation (505) may be performed before the operation (510) of stacking the plurality of sheets (410). The raw material fiber impregnation operation (501) may form a sheet in a prepreg state by impregnating each of the plurality of fiber sheets, which are the raw material of the plurality of sheets (410), with a liquid synthetic resin, such as an epoxy resin. The liquid synthetic resin to be impregnated may have a content of 30 to 60% of the weight of the plurality of fiber sheets.

[0211] In one embodiment, the punching hole (410c) forming operation (505) may form a punching hole (410c) in at least some of the impregnated plurality of raw material fibers. The punching hole (410c) may implement a step of the wing plate (400). The position, shape, and size of the punching hole (410c) of each of the plurality of sheets (410) may be different from each other. In the punching hole (410c) forming operation (505), the two sheets that are laminated at the outermost end among the plurality of sheets (410) may not form a punching hole (410c).

[0212] In one embodiment, the sand blasting process operation (560) may perform a sand blasting process on at least one surface of the wing plate (400) prior to the operation (570) of cleaning the wing plate (400).

[0213] In one embodiment, since the wing plate (400) must go through multiple processes, a release agent and other contaminants may remain on the surface of the wing plate (400) made of a carbon composite material. The release agent is a chemical used to prevent adhesion between the wing plate (400) and the surface of other materials, and may interfere with the adhesion between the adhesive and the wing plate (400). The release agent is difficult to remove with alcohol and other organic solvents, and other contaminants remaining on the surface of the wing plate (400) reduce the bonding strength between the wing plate (400) and other components. Therefore, the sandblasting process can treat the surface of the wing plate (400) to improve the surface bonding strength. In addition, the sandblasting process can remove fine carbon fiber burrs generated during the operation (550) of forming the wing plate (400). Through the sandblasting process, at least one surface of the wing plate (400) can be made to have a center-line average surface roughness (CLA) between 1.0 Ra and 5.0 Ra.

[0214] Although not shown in the drawing, the manufacturing method (500) of the wing plate (400) may further include a forming operation (not shown) of a joining member (461).

[0215] In one embodiment, the forming operation (not shown) of the joining member (461) may form a countergradient structure or an undercut structure in the wing plate (400) by insert-molding a joining member (461) made of synthetic resin into a joining area (450) formed in the wing plate (400). However, the present invention is not limited thereto, and the forming operation (not shown) of the joining member (461) may be formed by assembling and / or bonding a joining member (461) formed separately from the wing plate (400) to the wing plate (400).

[0216] An electronic device (300) according to one embodiment of the present document may include a display assembly (350) including a first region (351), a second region (352), and a folding region (353) between the first region (351) and the second region (352), a first housing (301) supporting the first region (351), a second housing (302) supporting the second region (352), and a hinge unit (370) connecting the first housing (301) and the second housing (302) and operating between a folded state in which the first region (351) and the second region (352) face each other and an unfolded state in which the first region (351) and the second region (352) do not face each other, and a wing plate (400) disposed between the hinge unit (370) and the display assembly (350) and supporting the display assembly (350). In one embodiment, the wing plate (400) may be formed by stacking a plurality of sheets (410).

[0217] In one embodiment, each of the plurality of sheets (410) may be made of uni-directional (UD) fibers that are oriented in a single direction and have relatively higher stiffness in that single direction than in the other direction.

[0218] In one embodiment, any one of the plurality of sheets (410) may be oriented in a different direction than other adjacent sheets stacked among the plurality of sheets (410).

[0219] In one embodiment, any one of the plurality of sheets (410) may be oriented in a direction mutually perpendicular to another sheet that is stacked adjacent to the plurality of sheets (410).

[0220] In one embodiment, the wing plate (400) may include a stepped region (420) having a different thickness compared to other adjacent regions of the wing plate (400). In one embodiment, in the stepped region (420), the number of sheets (410) stacked may be different from other adjacent regions of the wing plate (400).

[0221] In one embodiment, the wing plate (400) may include a plurality of step regions (420). In one embodiment, the plurality of step regions (420) may include a first step region (422) and a second step region (423) that is thinner than the first step region (422) and has a smaller number of stacked sheets (410) than the first step region (422).

[0222] In one embodiment, the wing plate (400) may include a protruding region (427) that protrudes toward the display assembly (350) or hinge unit (370) from other adjacent regions of the wing plate (400). In one embodiment, the protruding region (427) may extend from at least a portion of the plurality of sheets (410) from other adjacent regions of the wing plate (400).

[0223] In one embodiment, the plurality of sheets (410) may include a first outer sheet (411) facing the display assembly (350), a second outer sheet (419) provided in an opposite direction to the first outer sheet (411) and facing the hinge unit (370), and an inner sheet (410b) laminated between the first outer sheet (411) and the second outer sheet (419).

[0224] In one embodiment, the inner sheet (410b) may include a punching hole (410c) provided in at least a portion of the area.

[0225] In one embodiment, the first outer sheet (411) may be continuous over the entire area of ​​the wing plate (400).

[0226] In one embodiment, the second outer sheet (419) may be continuous across the entire area of ​​the wing plate (400).

[0227] In one embodiment, the first outer sheet (411) may have a center-line average surface roughness (CLA) of between 1.0 Ra and 5.0 Ra.

[0228] In one embodiment, the wing plate (400) may include a joining region (450) having a different thickness than an adjacent region of the wing plate (400) and a joining member (461) joined to the joining region (450).

[0229] In one embodiment, the bonding area (450) may include a first fastening structure (451) that opens from one side of the wing plate (400) to the other side so that a bonding member (461) is positioned therethrough.

[0230] In one embodiment, the joining area (450) may include a second fastening structure (452) that is grooved inward from the outer surface of the wing plate (400) to allow the joining member (461) to be secured thereto.

[0231] In one embodiment, each of the plurality of sheets (410) may be made of one or a blend of at least two of carbon fiber, glass fiber, and aramid fiber.

[0232] In one embodiment, the plurality of sheets (410) are made of a plurality of fiber sheets and a liquid synthetic resin, and the liquid synthetic resin may have a content of 30 to 60% of the weight of the plurality of fiber sheets.

[0233] In addition, a method (500) for manufacturing a wing plate (400) according to an embodiment of the present document may include an operation (510) of stacking a plurality of sheets (410), an operation (530) of positioning the plurality of sheets (410) in a mold and thermoforming them, an operation (550) of cutting the thermoformed plurality of sheets (410) to form a wing plate (400), and an operation (570) of washing the wing plate (400).

[0234] In one embodiment, the method (500) for manufacturing a wing plate (400) may further include an operation (560) of performing a sand blasting process on at least one surface of the wing plate (400) prior to an operation (570) of washing the wing plate (400).

[0235] In one embodiment, the method (500) for manufacturing a wing plate (400) may further include, prior to the operation (510) of stacking the plurality of sheets (410), the operation (501) of impregnating each of the plurality of fiber sheets with a liquid synthetic resin and the operation (505) of forming a punching hole (410c) in at least some of the plurality of impregnated raw material fibers.

[0236] Although the preferred embodiments have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person having ordinary skill in the art to which the present disclosure pertains without departing from the scope of the claims. Furthermore, such modifications should not be individually understood from the technical idea or perspective.

Claims

1. In an electronic device (300), A display assay (350) comprising a first region (351), a second region (352), and a folding region (353) between the first region (351) and the second region (352); A first housing (301) supporting the first region (351); A second housing (302) supporting the second region (352); A hinge unit (370) that connects the first housing (301) and the second housing (302) and operates between a folded state in which the first region (351) and the second region (352) face each other and an unfolded state in which the first region (351) and the second region (352) do not face each other; and A wing plate (400) is disposed between the hinge unit (370) and the display assembly (350) and supports the display assembly (350). The above wing plate (400) is An electronic device (300) formed by stacking a plurality of sheets (410).

2. In paragraph 1, Each of the above plurality of sheets (410) An electronic device (300) made of UD (uni-direction) fibers that are oriented in a single direction and have relatively higher stiffness in that single direction than in other directions.

3. In either of paragraphs 1 and 2, Any one of the above plurality of sheets (410) An electronic device (300) which is oriented in a different direction from other sheets that are laminated adjacently among the plurality of sheets (410).

4. In any one of paragraphs 1 to 3, Any one of the above plurality of sheets (410) An electronic device (300) oriented in a direction perpendicular to another sheet that is laminated adjacently among the plurality of sheets (410).

5. In any one of paragraphs 1 to 4, The above wing plate (400) is It includes a step region (420) having a different thickness compared to other adjacent regions of the wing plate (400), In the above step area (420), An electronic device (300) in which the number of the plurality of sheets (410) stacked is different from that of adjacent other areas of the wing plate (400).

6. In any one of paragraphs 1 to 5, The above wing plate (400) includes a plurality of step areas (420), The multiple step areas (420) are: First step area (422) and An electronic device (300) including a second step region (423) that is thinner than the first step region (422) and has a smaller number of stacked sheets (410) than the first step region (422).

7. In any one of paragraphs 1 to 6, The above wing plate (400) is Includes a protruding area (427) that protrudes toward the display assembly (350) or the hinge unit (370) more than the adjacent other areas of the wing plate (400), The above protruding area (427) is An electronic device (300), wherein at least some of the plurality of sheets (410) extend from adjacent other areas of the wing plate (400).

8. In any one of paragraphs 1 to 7, The above plurality of sheets (410) are, A first outer sheet (411) facing the above display assay (350), A second outer sheet (419) provided in the opposite direction to the first outer sheet (411) and facing the hinge unit (370) and An electronic device (300) comprising an inner sheet (410b) laminated between the first outer sheet (411) and the second outer sheet (419).

9. In any one of paragraphs 1 to 8, The above inner sheet (410b) is An electronic device (300) comprising a punching hole (410c) provided in at least some area.

10. In any one of paragraphs 1 to 9, The above first outer sheet (411) is An electronic device (300) that is continuous over the entire area of ​​the wing plate (400).

11. In any one of paragraphs 1 to 10, The above second outer sheet (419) is An electronic device (300) that is continuous over the entire area of ​​the wing plate (400).

12. In any one of paragraphs 1 to 11, The above first outer sheet (411) is An electronic device (300) having a center-line average (CLA) surface roughness between Ra and 5.0 Ra.

13. In any one of paragraphs 1 to 12, The above wing plate (400) is A joining area (450) having a different thickness from the adjacent other areas of the wing plate (400) and An electronic device (300) comprising a bonding member (461) bonded to the above bonding area (450).

14. In any one of paragraphs 1 to 13, The above bonding area (450) is An electronic device (300) comprising a first fastening structure (451) that is opened from one side of the wing plate (400) to the other side so that the connecting member (461) is positioned to penetrate therethrough.

15. In any one of paragraphs 1 to 14, The above bonding area (450) is An electronic device (300) including a second fastening structure (452) that is grooved inward from the outer surface of the wing plate (400) so that the above-mentioned joining member (461) is secured.

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