Electronic device comprising waveguide for speaker

Abstract

A portable communication device according to an embodiment may comprise: a housing including a speaker hole; and a speaker in the housing, configured to output audio. The portable communication device may include a waveguide extending from the speaker to the speaker hole to transmit the audio to the outside of the electronic device. The waveguide may include a first surface that is at least partially bent, and a second surface that faces the first surface and is spaced apart from the first surface. The second surface may be at least partially spaced apart from an imaginary line parallel to the first surface according to the ratio between the length of the second surface and the distance from a first point on the second surface to a second point spaced apart along the second surface.

Description

Electronic device including a waveguide for a speaker

[0001] The various embodiments described below relate to electronic devices including waveguides for speakers.

[0002] An electronic device may include a speaker to provide auditory information to a user or to provide various user experiences to the user. The electronic device may include a waveguide to transmit audio output from the speaker to the outside of the electronic device. The waveguide may require a structure to improve the sound quality of sound emitted from the speaker to the outside of the electronic device through the waveguide to meet the user's needs.

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above-described matters constitute prior art related to the present disclosure.

[0004] In one embodiment, a portable communication device may include a housing including a speaker hole, and a speaker within the housing configured to output audio. The portable communication device may include a waveguide extending from the speaker to the speaker hole to transmit the audio to an exterior of the electronic device. The waveguide may include a first surface that is at least partially curved, and a second surface facing the first surface and spaced apart from the first surface. The second surface may be spaced at least partially from an imaginary line parallel to the first surface according to a ratio of a length of the second surface and a distance from a first point on the second surface to a second point spaced apart along the second surface.

[0005] In one embodiment, a portable communication device may include a housing including a speaker hole, a display coupled to the housing, and a speaker within the housing configured to output audio toward the display. The portable communication device may include a waveguide extending from the speaker to the speaker hole to transmit the audio to an exterior of the electronic device. The waveguide may include a first surface that is at least partially curved, and a second surface facing the first surface and spaced apart from the first surface. The speaker hole may be formed along the display. The second surface may be spaced at least partially from an imaginary line parallel to the first surface according to a ratio of a length of the second surface and a distance from a first point on the second surface to a second point spaced apart along the second surface.

[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 electronic device according to one embodiment.

[0008] FIG. 2b is an exploded perspective view of an electronic device according to one embodiment.

[0009] Figure 3a illustrates a portion of an exemplary electronic device.

[0010] FIG. 3b is a partial cross-sectional view of an exemplary electronic device taken along line A-A' of FIG. 2a.

[0011] Figures 4a and 4b illustrate portions of exemplary electronic devices.

[0012] Figure 5 is a graph showing the sound pressure level according to the shape of the waveguide and the frequency of the sound.

[0013] FIG. 1 is a block diagram of an electronic device within a network environment, according to one embodiment.

[0014] 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). In 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). According to one embodiment, at least one of these components (e.g., the connection terminal (178)) may be omitted, or one or more other components may be added to the electronic device (101). According to one embodiment, 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)).

[0015] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result 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 an auxiliary 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 with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0016] The auxiliary processor (123) may control at least a portion 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.

[0017] 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).

[0018] 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).

[0019] 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).

[0020] 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. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0021] 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. In 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.

[0022] 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).

[0023] 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.

[0024] 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.

[0025] 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).

[0026] 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. In one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0027] 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.

[0028] 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, for example, as at least a part of a power management integrated circuit (PMIC).

[0029] 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.

[0030] 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).

[0031] 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) can 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.

[0032] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In 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). In 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 by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. In one embodiment, 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).

[0033] 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 to one surface (e.g., a bottom surface) 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 to another surface (e.g., a top surface or a side surface) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0034] 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)).

[0035] 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 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. According to one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server using machine learning and / or a neural network. According to 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.

[0036] FIG. 2A is a diagram illustrating an electronic device according to one embodiment.

[0037] Referring to FIG. 2A, an electronic device (101) according to one embodiment may include a housing (210) forming an exterior of the electronic device (101). For example, the housing (210) may include a front surface (200A), a rear surface (200B), and a side surface (200C) surrounding a space between the front surface (200A) and the rear surface (200B). According to one embodiment, the housing (210) may also refer to a structure forming at least a portion of the front surface (200A), the rear surface (200B), and / or the side surface (200C).

[0038] An electronic device (101) according to one embodiment may include a substantially transparent front plate (202). According to one embodiment, the front plate (202) may form at least a portion of the front surface (200A). According to one embodiment, the front plate (202) may include, but is not limited to, a glass plate including various coating layers or a polymer plate.

[0039] An electronic device (101) according to one embodiment may include a substantially opaque back plate (211). According to one embodiment, the back plate (211) may form at least a portion of the back surface (200B). According to one embodiment, the back plate (211) may be formed of coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the foregoing materials.

[0040] An electronic device (101) according to one embodiment may include a side bezel structure (or side member) (218). According to one embodiment, the side bezel structure (218) may be combined with a front plate (202) and / or a back plate (211) to form at least a portion of a side surface (200C) of the electronic device (101). For example, the side bezel structure (218) may form the entire side surface (200C) of the electronic device (101), or, for another example, the side bezel structure (218) may form the side surface (200C) of the electronic device (101) together with the front plate (202) and / or the back plate (211).

[0041] Unlike the illustrated embodiment, when the side surface (200C) of the electronic device (101) is partially formed by the front plate (202) and / or the rear plate (211), the front plate (202) and / or the rear plate (211) may include a region that extends seamlessly from its edge toward the rear plate (211) and / or the front plate (202). The extending region of the front plate (202) and / or the rear plate (211) may be located at both ends of a long edge of the electronic device (101), for example, but is not limited to the above-described example.

[0042] In one embodiment, the side bezel structure (218) may include a metal and / or a polymer. In one embodiment, the back plate (211) and the side bezel structure (218) may be formed integrally and may include the same material (e.g., a metal material such as aluminum), but is not limited thereto. For example, the back plate (211) and the side bezel structure (218) may be formed as separate components and / or may include different materials.

[0043] According to one embodiment, the electronic device (101) may include at least one of a display (201), an audio module (203, 204, 207), a sensor module (not shown), a camera module (205, 212, 213), a key input device (217), a light emitting element (not shown), and / or a connector hole (208). According to one embodiment, the electronic device (101) may omit at least one of the above components (e.g., the key input device (217) or the light emitting element (not shown)) or may additionally include other components.

[0044] In one embodiment, the display (201) may be visually exposed through a substantial portion of the front plate (202). For example, at least a portion of the display (201) may be visible through the front plate (202) forming the front surface (200A). In one embodiment, the display (201) may be disposed on the back surface of the front plate (202).

[0045] According to one embodiment, the outer shape of the display (201) may be formed to be substantially the same as the outer shape of the front plate (202) adjacent to the display (201). According to one embodiment, in order to expand the area where the display (201) is visually exposed, the gap between the outer shape of the display (201) and the outer shape of the front plate (202) may be formed to be substantially the same.

[0046] According to one embodiment, the display (201) (or the front surface (200A) of the electronic device (101)) may include a screen display area (201A). According to one embodiment, the display (201) may provide visual information to a user through the screen display area (201A). In the illustrated embodiment, when the front surface (200A) is viewed straight ahead, the screen display area (201A) is depicted as being positioned on the inside of the front surface (200A) and spaced apart from the outer edge of the front surface (200A), but is not limited thereto. In another embodiment, when the front surface (200A) is viewed straight ahead, at least a portion of an edge of the screen display area (201A) may substantially coincide with an edge of the front surface (200A) (or the front plate (202)).

[0047] In one embodiment, the screen display area (201A) may include a sensing area (201B) configured to acquire biometric information of the user. Here, the meaning of "the screen display area (201A) includes the sensing area (201B)" may be understood to mean that at least a portion of the sensing area (201B) may overlap the screen display area (201A). For example, the sensing area (201B) may be an area capable of displaying visual information by the display (201) like other areas of the screen display area (201A) and additionally capable of acquiring biometric information of the user (e.g., a fingerprint). In one embodiment, the sensing area (201B) may also be formed in the key input device (217).

[0048] In one embodiment, the display (201) may include an area where a first camera (205) is positioned. In one embodiment, an opening is formed in the area of ​​the display (201), and the first camera (205) (e.g., a punch hole camera) may be at least partially positioned within the opening so as to face the front (200A). In this case, the screen display area (201A) may surround at least a portion of an edge of the opening. In one embodiment, the first camera (205) (e.g., an under display camera (UDC)) may be positioned below the display (201) so as to overlap the area of ​​the display (201). In this case, the display (201) may provide visual information to the user through the area, and additionally, the first camera (205) may acquire an image corresponding to a direction facing the front (200A) through the area of ​​the display (201).

[0049] According to one embodiment, the display (201) may be coupled to or disposed adjacent to a touch sensing circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a digitizer capable of detecting a magnetic field-type stylus pen.

[0050] According to one embodiment, the audio module (203, 204, 207) may include a microphone hole (203, 204) and a speaker hole (207).

[0051] According to one embodiment, the microphone holes (203, 204) may include a first microphone hole (203) formed in a portion of the side (200C) and a second microphone hole (204) formed in a portion of the rear (200B). A microphone (not shown) for acquiring external sound may be placed inside the microphone holes (203, 204). The microphone may include multiple microphones to detect the direction of the sound.

[0052] According to one embodiment, the second microphone hole (204) formed in a portion of the rear surface (200B) may be positioned adjacent to the camera module (205, 212, 213). For example, the second microphone hole (204) may acquire sound according to the operation of the camera module (205, 212, 213). However, the present invention is not limited thereto.

[0053] According to one embodiment, the speaker hole (207) may include an external speaker hole (207) and a call receiver hole (not shown). The external speaker hole (207) may be formed in a part of the side surface (200C) of the electronic device (101). According to one embodiment, the external speaker hole (207) may be implemented as a single hole with the microphone hole (203). Although not shown, the call receiver hole (not shown) may be formed in another part of the side surface (200C). For example, the call receiver hole may be formed on the opposite side of the external speaker hole (207) in the side surface (200C). For example, with reference to the illustration in FIG. 2A, the external speaker hole (207) may be formed in the side surface (200C) corresponding to the lower portion of the electronic device (101), and the call receiver hole may be formed in the side surface (200C) corresponding to the upper portion of the electronic device (101). However, this is not limited thereto, and in one embodiment, the call receiver hole may be formed at a location other than the side (200C). For example, the call receiver hole may be formed by a spaced space between the front plate (202) (or display (201)) and the side bezel structure (218).

[0054] According to one embodiment, the electronic device (101) may include at least one speaker (not shown) configured to output sound to the outside of the housing through an external speaker hole (207) and / or a call receiver hole (not shown).

[0055] According to one embodiment, a sensor module (not shown) may generate an electrical signal or data value corresponding to an internal operating state of the electronic device (101) or an external environmental state. For example, the sensor module may include at least one of a proximity sensor, an HRM sensor, a fingerprint sensor, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0056] According to one embodiment, the camera module (205, 212, 213) may include a first camera (205) positioned to face the front (200A) of the electronic device (101), a second camera (212) positioned to face the rear (200B), and a flash (213).

[0057] In one embodiment, the second camera (212) may include multiple cameras (e.g., dual cameras, triple cameras, or quad cameras). However, the second camera (212) is not necessarily limited to including multiple cameras and may include a single camera.

[0058] According to one embodiment, the first camera (205) and the second camera (212) may include one or more lenses, image sensors, and / or image signal processors.

[0059] In one embodiment, the flash (213) may include, for example, a light-emitting diode or a xenon lamp. In one embodiment, two or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be arranged on one side of the electronic device (101).

[0060] According to one embodiment, the key input device (217) may be positioned on a side (200C) of the electronic device (101). According to one embodiment, the electronic device (101) may not include some or all of the key input devices (217), and the key input devices (217) that are not included may be implemented in another form, such as a soft key, on the display (201).

[0061] According to one embodiment, a connector hole (208) may be formed on a side surface (200C) of the electronic device (101) so that a connector of an external device may be accommodated. A connection terminal electrically connected to the connector of the external device may be arranged within the connector hole (208). The electronic device (101) according to one embodiment may include an interface module for processing electrical signals transmitted and received through the connection terminal.

[0062] According to one embodiment, the electronic device (101) may include a light-emitting element (not shown). For example, the light-emitting element (not shown) may be disposed on the front surface (200A) of the housing. The light-emitting element (not shown) may provide status information of the electronic device (101) in the form of light. According to one embodiment, the light-emitting element (not shown) may provide a light source that is linked to the operation of the first camera (205). For example, the light-emitting element (not shown) may include an LED, an IR LED, and / or a xenon lamp.

[0063] FIG. 2b is an exploded perspective view of an electronic device according to one embodiment.

[0064] In the following, redundant descriptions of configurations having the same reference numerals as the configurations described above are omitted.

[0065] According to one embodiment, the electronic device (101) may be referred to as a portable communication device for communicating with an external electronic device (e.g., the electronic device (102) of FIG. 1).

[0066] Referring to FIG. 2b, an electronic device (101) according to one embodiment may include a frame structure (240), a first printed circuit board (250), a second printed circuit board (252), a cover plate (260), and a battery (270).

[0067] According to one embodiment, the frame structure (240) may include a side bezel structure (218) forming an exterior of the electronic device (101) (e.g., side surface (200C) of FIG. 2A) and a support portion (243) extending inwardly from the side bezel structure (218). According to one embodiment, the frame structure (240) may be disposed between the display (201) and the back plate (211). According to one embodiment, the side bezel structure (218) of the frame structure (240) may surround a space between the back plate (211) and the front plate (202) (and / or the display (201)), and the support portion (243) of the frame structure (240) may extend from the side bezel structure (218) within the space.

[0068] In one embodiment, the frame structure (240) may support or accommodate other components included in the electronic device (101). For example, a display (201) may be disposed on one side of the frame structure (240) facing one direction (e.g., +z direction), and the display (201) may be supported by a support portion (243) of the frame structure (240). For example, a first printed circuit board (250), a second printed circuit board (252), a battery (270), and a second camera (212) may be disposed on the other side of the frame structure (240) facing the opposite direction (e.g., -z direction). The first printed circuit board (250), the second printed circuit board (252), the battery (270), and the second camera (212) may each be mounted in a recess defined by the side bezel structure (218) and / or the support portion (243) of the frame structure (240).

[0069] According to one embodiment, the first printed circuit board (250), the second printed circuit board (252), and the battery (270) may be respectively coupled to the frame structure (240). For example, the first printed circuit board (250) and the second printed circuit board (252) may be fixedly disposed to the frame structure (240) through a coupling member such as a screw. For example, the battery (270) may be fixedly disposed to the frame structure (240) through an adhesive member (e.g., double-sided tape). However, the present invention is not limited to the above-described examples.

[0070] According to one embodiment, the cover plate (260) may be disposed between the support portion (243) and the back plate (211). According to one embodiment, the cover plate (260) may be disposed on the first printed circuit board (250). For example, the cover plate (260) may be disposed on a surface of the first printed circuit board (250) facing the -z direction.

[0071] According to one embodiment, the cover plate (260) may at least partially overlap the first printed circuit board (250) with respect to the z-axis. According to one embodiment, the cover plate (260) may cover at least a portion of the first printed circuit board (250). Through this, the cover plate (260) may protect the first printed circuit board (250) from physical impact or prevent detachment of a connector coupled to the first printed circuit board (250).

[0072] According to one embodiment, the cover plate (260) may be fixedly positioned to the frame structure (240) via a joining member (e.g., a screw), or may be joined to the frame structure (240) together with the first printed circuit board (250) via the joining member.

[0073] In one embodiment, the display (201) may be positioned between a frame structure (240) and a front plate (202). For example, the front plate (202) may be positioned on one side (e.g., in the +z direction) of the display (201), and the frame structure (240) may be positioned on the other side (e.g., in the -z direction).

[0074] According to one embodiment, the front plate (202) can be coupled with the display (201). For example, the front plate (202) and the display (201) can be adhered to each other through an optical adhesive member (e.g., optically clear adhesive (OCA) or optically clear resin (OCR)) interposed therebetween.

[0075] According to one embodiment, the front plate (202) may be coupled with the frame structure (240). For example, the front plate (202) may include an outer portion extending outside the display (201) when viewed in the z-axis direction, and may be adhered to the frame structure (240) through an adhesive member (e.g., double-sided tape) disposed between the outer portion of the front plate (202) and the frame structure (240) (e.g., side bezel structure (218)). However, the present invention is not limited to the above-described example.

[0076] According to one embodiment, a processor, a memory, and / or an interface may be disposed on the first printed circuit board (250) and / or the second printed circuit board (252). The processor may include, for example, one or more of a central processing unit, an application processor, a graphics processing unit, an image signal processor, a sensor hub processor, or a communication processor. The memory may include, for example, volatile memory or non-volatile memory. The interface may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, and / or an audio interface. The interface may electrically or physically connect the electronic device (101) to an external electronic device, and may include a USB connector, an SD card / MMC connector, or an audio connector. According to one embodiment, the first printed circuit board (250) and the second printed circuit board (252) may be operatively or electrically connected to each other via a connecting member (e.g., a flexible printed circuit board).

[0077] In one embodiment, the battery (270) may power at least one component of the electronic device (101). For example, the battery (270) may include a rechargeable secondary battery or a fuel cell. At least a portion of the battery (270) may be disposed substantially coplanar with the first printed circuit board (250) and / or the second printed circuit board (252).

[0078] An electronic device (101) according to one embodiment may include an antenna module (not shown). According to one embodiment, the antenna module may be disposed between the rear plate (211) and the battery (270). The antenna module may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and / or a magnetic secure transmission (MST) antenna. The antenna module may, for example, perform short-range communication with an external device or wirelessly transmit and receive power with an external device.

[0079] According to one embodiment, a first camera (205) (e.g., a front camera) may be positioned on at least a portion of a frame structure (240) (e.g., a support portion (243)) such that the lens can receive external light through a portion of the front plate (202) (e.g., the camera area (237)) (e.g., the front (200A) of FIG. 1).

[0080] In one embodiment, the second camera (212) (e.g., a rear camera) may be disposed between the frame structure (240) and the rear plate (211). In one embodiment, the second camera (212) may be electrically connected to the first printed circuit board (250) via a connecting member (e.g., a connector). In one embodiment, the second camera (212) may be disposed such that the lens can receive external light through the camera area (284) of the rear plate (211) of the electronic device (101).

[0081] According to one embodiment, the camera area (284) may be formed on a surface of the rear plate (211) (e.g., the rear surface (200B) of FIG. 1). According to one embodiment, the camera area (284) may be formed to be at least partially transparent so that external light may be incident on the lens of the second camera (212). According to one embodiment, at least a portion of the camera area (284) may protrude from the surface of the rear plate (211) by a predetermined height. However, the present invention is not limited thereto, and in another embodiment, the camera area (284) may form a plane substantially coextensive with the surface of the rear plate (211).

[0082] According to one embodiment, the housing (e.g., the housing (210) of FIG. 2A) of the electronic device (101) may refer to a configuration or structure that forms at least a portion of the exterior of the electronic device (101). In this regard, at least a portion of the front plate (202), the frame structure (240), and / or the rear plate (211) that form the exterior of the electronic device (101) may be included in the housing (210) of the electronic device (101).

[0083] Fig. 3a illustrates a portion of an exemplary electronic device. Fig. 3b is a partial cross-sectional view of the exemplary electronic device taken along line A-A' of Fig. 2a.

[0084] Referring to FIGS. 3A and 3B, the electronic device (101) may include a housing (210) including a speaker hole (301), a speaker (310), and a waveguide (320).

[0085] In one embodiment, a speaker (310) may be disposed within a housing (210). The speaker (310) may be configured to output audio. For example, the housing (210) may include a front surface (e.g., a front surface (200A) of FIG. 2A), a rear surface opposite the front surface (200A) (e.g., a rear surface (200B) of FIG. 2A), and a side surface (e.g., a side surface (200C) of FIG. 2A) surrounding a space between the front surface (200A) and the rear surface (200B). The speaker (310) may be disposed within the space between the front surface (200A) and the rear surface (200B). The speaker (310) may be surrounded by the front surface (200A), the rear surface (200B), and the side surface (200C).

[0086] For example, the speaker hole (301) may be arranged toward the front side (200A) of the housing (210). The speaker hole (301) may be formed between a structure (e.g., a display (201)) arranged on the front side (200A) and a structure (e.g., a side bezel structure (218)) forming at least a portion of the side side (200C). The speaker (310) may be arranged around the front side (200A) and / or the side side (200C) to emit audio to the outside of the electronic device (101) through the speaker hole (301). The speaker (310) may be arranged to output the audio toward the speaker hole (301).

[0087] In one embodiment, the electronic device (101) may include a display (201). The speaker (310) may include a diaphragm (311) configured to output audio. For example, the display (201) may be attached to a frame structure (240). The display (201) may be at least partially exposed to the exterior of the electronic device (101). The display (201) may provide visual information to a user. For example, the speaker (310) may at least partially face the display (201). For example, the speaker (310) may overlap a portion of the display (201) when viewing the display (201) from above (e.g., when viewing in the +z direction).

[0088] For example, the speaker hole (301) may be formed at least partially between the display (201) and the side bezel structure (218) of the housing (210). The speaker hole (301) may be referred to as a gap between the display (201) and the side bezel structure (218), but is not limited thereto. For example, the diaphragm (311) may be positioned to face the display (201).

[0089] For example, although not shown, the speaker (310) may include at least one voice coil that provides vibration to a diaphragm (311) within the speaker (310), and a magnet that forms a magnetic field. When current flows through the at least one voice coil, a magnetic field formed by the voice coil may interact with a magnetic field formed by the magnet to vibrate the voice coil. Based on the vibration of the voice coil, the diaphragm (311) connected to the voice coil may be configured to vibrate. The speaker (310) may be configured to output audio based on the vibration of the diaphragm (311) caused by the vibration of the voice coil. The speaker (310) may include, but is not limited to, a yoke that forms a magnetic field together with the magnet. The electronic device (101) may include a structure for transmitting the audio output from the speaker (310) to the outside of the electronic device (101) through the speaker hole (301).

[0090] According to one embodiment, the waveguide (320) may extend from the speaker (310) to the speaker hole (301) of the housing (210) to transmit audio output from the speaker (310) to the outside of the electronic device (101). For example, the waveguide (320) may extend from the diaphragm (311) of the speaker (310) to the speaker hole (301). For example, the waveguide (320) may connect the speaker (310) and the speaker hole (301). For example, the waveguide (320) may provide a path for audio output from the speaker (310). For example, the waveguide (320) may be a passage through which audio output from the diaphragm (311) of the speaker (310) is emitted toward the outside of the electronic device (101). The waveguide (320) may be referred to as an acoustic duct in that it provides a path for the audio, but is not limited thereto. For example, the waveguide (320) may be a conduit formed in a component of the housing (210), such as the frame structure (240) of FIG. 2B or the side bezel structure (218).

[0091] In one embodiment, the electronic device (101) may include an electronic component (350) positioned adjacent to the waveguide (320). For example, the electronic component (350) may include a camera. The electronic component (350) may be positioned toward the front side (200A) of the housing (210) and / or the display (201). For example, the electronic component (350) may be at least partially exposed to the outside of the electronic device (101) through a hole for the electronic component (350) (e.g., the camera area (237) of FIG. 2B). For example, the electronic component (350) may be referred to as, but is not limited to, a front camera (e.g., the first camera (205) of FIG. 2A) positioned toward the front side (200A) of the housing (210). The above electronic component (350) may include at least one of an under display camera (UDC) and a punch hole camera.

[0092] In one embodiment, the waveguide (320) may be at least partially bent. For example, the electronic device (101) may require a structure for improving the sound quality of audio output from the speaker (310). The structure of the waveguide (320) for improving the sound quality of the audio is described below in FIG. 4A.

[0093] According to one embodiment, the waveguide (320) may include a first surface (321) and a second surface (322) facing and spaced apart from the first surface (321). For example, the first surface (321) may be at least partially bent or include a curved surface depending on the position or shape of the electronic component (350). For example, the second surface (322) may extend along the first surface (321). The second surface (322) may be spaced apart from the first surface (321) to form a path for audio output from the speaker (310). For example, the second surface (322) may be at least partially bent or include a curved surface along the first surface (321).

[0094] For example, the first side (321) and the second side (322) may be sides extending in the longitudinal direction and / or the length direction of the waveguide (320) extending from the speaker (310) to the speaker hole (301). For example, since the waveguide (320) has an at least partially curved shape, the length of the second side (322) may be longer than the length of the first side (321). The first side (321) may be referred to as the shortest side of the waveguide (320) in that it has a relatively short length with respect to the second side (322), but is not limited thereto. The second side (322) may be referred to as the longest side of the waveguide (320) in that it has a relatively long length with respect to the first side (321), but is not limited thereto. For example, the first side (321) and the second side (322) may at least partially surround the periphery of the speaker (310) when viewed from above (e.g., when viewed in the +z direction).

[0095] According to one embodiment, the waveguide (320) can include a third face (323) extending from the first face (321) to the second face (322), and a fourth face (324) facing the third face (323) and spaced apart from the third face (323). The fourth face (324) can be parallel to the third face (323). For example, the third face (323) can connect the first face (321) and the second face (322). The fourth face (324) can be spaced apart from the third face (323) to provide a path for audio output from the speaker (310) together with the first face (321) and the second face (322). The fourth surface (324) may, together with the third surface (323), connect the first surface (321) and the second surface (322). For example, the fourth surface (324) may extend from the first surface (324) to the second surface (322). For example, the fourth surface (324) may be a surface adjacent to the display (201) among the surfaces (321, 322, 323, 324) of the waveguide (320). The third surface (323) may be a surface adjacent to the speaker (310) among the surfaces (321, 322, 323, 324) of the waveguide (320). The third surface (323) may include an opening (323a) for allowing audio output from the speaker (310) to pass into the interior of the waveguide (320). The opening (323a) may overlap with the diaphragm (311) of the speaker (310) when viewed from above (e.g., when viewed in the +z direction). The fourth surface (324) may be, for example, parallel to the display (201), but is not limited thereto. For example, the third surface (323) and the fourth surface (324) may have at least a partially flat shape.

[0096] According to one embodiment, the third surface (323) may include at least one step portion (330). For example, the at least one step portion (330) may be a portion of the third surface (323) in which a curved surface is formed. For example, the at least one step portion (330) may change the volume of the waveguide (320) according to the length of the waveguide (320). For example, the at least one step portion (330) may change the cross-sectional area of ​​the waveguide (320) according to the length of the waveguide (320). The third surface (323) may provide additional space for the waveguide (320) by including the at least one step portion (330). The at least one step portion (330) can affect the sound quality of audio output from the speaker (310) to the waveguide (320) by changing the cross-sectional area along the length of the waveguide (320).

[0097] According to one embodiment, audio output from the speaker (310) to the inside of the waveguide (320) may experience resonance or deteriorate in sound quality while passing through the waveguide (320). The waveguide (320) can improve the sound quality of the audio by changing the shape of the inner surface of the waveguide (320). For example, the waveguide (320) can improve the sound quality of the audio by changing the shape of the waveguide (320) without arranging a separate resonator for improving the sound quality of the audio passing through the waveguide (320). The internal structure of the waveguide (320) for improving the sound quality of the audio is described below in FIG. 4A. According to the above-described embodiment, the electronic device (101) may provide various user experiences to the user by including a waveguide (320) for transmitting audio output from the speaker (310) to the outside of the electronic device (101). For example, the waveguide (320) may be at least partially bent to provide additional space for electronic components (e.g., a camera) within the electronic device (101).

[0098] Figures 4a and 4b illustrate portions of exemplary electronic devices.

[0099] Referring to FIGS. 4A and 4B, an electronic device (101) may include a speaker hole (301), a housing (210), a speaker (310) configured to output audio, and a waveguide (320) extending from the speaker (310) to the speaker hole (301) to transmit the audio to the outside of the electronic device (101). The waveguide (320) may include a first surface (321) and a second surface (322) facing the first surface (321) and spaced apart from the first surface (321). According to one embodiment, the waveguide (320) may include a third surface (323) extending from the first surface (321) to the second surface (322), and a fourth surface (324) facing the third surface (323). The third surface (323) may include at least one step portion (330). In one embodiment, the electronic device (101) may include an electronic component (350) that is at least partially surrounded by the waveguide (320). In one embodiment, the electronic device (101) may include a display (e.g., the display (201) of FIG. 2A) coupled to the frame structure (240). The speaker (310) may include a diaphragm (311) configured to output audio.

[0100] Hereinafter, redundant descriptions of the configurations having the same reference numerals as those described above in FIGS. 3a and 3b are omitted.

[0101] According to one embodiment, the second surface (322) may be spaced, at least partially, from a virtual line (401) parallel to the first surface (321) according to a ratio of a length (L) of the second surface (322) to a distance (x) from a first point (p1) on the second surface (322) to a second point (p2) spaced along the second surface (322).

[0102] The virtual line (401) may extend along the first surface (321) in a direction in which the first surface (321) extends. The virtual line (401) may be defined as a line that at least partially contacts the second surface (322) and is parallel to the first surface (321). According to one embodiment, the first surface (321) may include a first bending portion (321a) that is bent. The virtual line (401) parallel to the first surface may include a second bending portion (401a) that faces the first bending portion (321a) and corresponds to the first bending portion (321a).

[0103] The first point (p1) and the second point (p2) may be points located on the second surface (322) and facing the virtual line (401). The first point (p1) may be defined as a point that is located on the same plane (e.g., xy plane) as the second point (p2) and whose position is fixed on the second surface (322). The second point (p2) may be defined as a point that is located on the same plane (e.g., xy plane) as the first point (p1) and whose position is changeable on the second surface (322).

[0104] For example, the virtual line (401) can provide a reference axis for the second surface (322). The second surface (322) can have a shape spaced apart from the virtual line (401) depending on the ratio of the length (L) of the second surface (322) and the distance (x) between the first point (p1) and the second point (p2) on the second surface (322). For example, depending on the ratio of the distance (x) between the first point (p1) and the second point (p2) and the length (L) of the second surface (322), the second surface (322) can be dented in a direction away from the first surface (321) with respect to the virtual line (401) or can be protruded toward the first surface (321) with respect to the virtual line (401). For example, depending on the ratio of the distance (x) between the first point (p1) and the second point (p2) and the length (L) of the second surface (322), the second surface (322) may have a positive curvature or a negative curvature as the second surface (322) extends. For example, the second surface (322) may have a trigonometric function graph shape with the virtual line (401) as a reference axis by being spaced apart from the virtual line (401) depending on the ratio of the distance (x) between the first point (p1) and the second point (p2) and the length (L) of the second surface (322), but is not limited thereto. The second surface (322) is spaced apart from an imaginary line (401) parallel to the first surface (321) according to the ratio of the distance (x) between the first point (p1) and the second point (p2) and the length (L) of the second surface (322), thereby improving the sound quality of audio output from the waveguide (320) to the speaker (310).

[0105] For example, the waveguide (320) can change the resonance frequency of audio output from the speaker (310). The waveguide (320) can be configured to be adjustable in that the second surface (322) is spaced apart from an imaginary line (401) that is at least partially parallel to the first surface (321) according to a ratio of the distance (x) between the first point (p1) and the second point (p2) and the length (L) of the second surface (322). Since the resonance frequency can be adjusted through the waveguide (320), the waveguide (320) can improve the acoustic radiation efficiency of the audio.

[0106] According to one embodiment, the distance (d) at which the second surface (322) is spaced from an imaginary line (401) parallel to the first surface (321) according to the ratio of the length (L) of the second surface (322) and the distance (x) from a first point (p1) on the second surface (322) to a second point (p2) spaced along the second surface (322) can be determined by the following mathematical expression 1.

[0107]

[0108] In the above mathematical expression 1, d represents the distance that the second surface (322) is spaced from the virtual line (401). Cm represents an amplitude constant. M represents a composite coefficient. R represents the ratio of the length (L) of the second surface (322) and the distance (x) from the first point (p1) on the second surface (322) to the second point (p2) spaced along the second surface (322).

[0109] For example, in mathematical expression 1, a portion of the second surface (322) (e.g., the first peak (421) or the second peak (422)) where the distance (d) from the virtual line (401) of the second surface (322) has a positive value may be a portion that is bent in a direction away from the virtual line (401) and the first surface (321). For example, in mathematical expression 1, a portion of the second surface (322) (e.g., the first valley (411) or the second valley (412)) where the distance (d) from the virtual line (401) of the second surface (322) has a negative value may be a portion that protrudes from the virtual line (401) in a direction closer to the first surface (321). For example, in mathematical expression 1, the point at which the distance (d) from the virtual line (401) of the second surface (322) becomes 0 may be the point at which the virtual line and the second surface (322) intersect.

[0110] For example, in mathematical expression 1, the distance (d) at which the second surface (322) is spaced from the virtual line (401) can be expressed as a function of the distance (x) between the first point (p1) and the second point (p2) through the ratio (R) of the length (L) of the second surface (322) and the distance (x) between the first point (p1) and the second point (p2). The function and the ratio (R) can be determined by mathematical expression 2 below.

[0111]

[0112] In mathematical expression 2, the distance (d) at which the second surface (322) is spaced from the virtual line (401) can be determined by the distance (x) from the first point (p1) to the second point (p2) spaced along the second surface (322) from the first point (p1). The second point (p2) can be located at any point between the first point (p1) whose position is fixed on the second surface (322) and the point at which the second surface (322) is in contact with the speaker hole (301). According to the distance (x) between the first point (p1) and the second point (p2), the second surface (322) has a shape corresponding to the mathematical expression 2 based on the imaginary line (401), thereby improving the sound quality of audio output from the speaker (310) to the outside of the electronic device (101) through the waveguide (320) and the speaker hole (301).

[0113] According to one embodiment, the composite coefficient (M) in mathematical expression 1 and / or mathematical expression 2 may have a range of 1 or more and 3 or less. For example, as the composite coefficient (M) has a range of 1 or more and 3 or less, the distance (d) at which the second surface (322) is spaced from the virtual line (401) may be determined by the mathematical expressions below.

[0114]

[0115]

[0116]

[0117] In mathematical expression 1, when the synthesis coefficient (M) is 1, referring to mathematical expression 3 together, the distance (d) at which the second surface (322) is spaced from the virtual line (401) can be determined by a single sine function. In mathematical expression 1, when the synthesis coefficient (M) is 2, referring to mathematical expression 4 together, the distance (d) at which the second surface (322) is spaced from the virtual line (401) can be determined by a synthesis of two sine functions. In mathematical expression 1, when the synthesis coefficient (M) is 3, referring to mathematical expression 5 together, the distance (d) at which the second surface (322) is spaced from the virtual line (401) can be determined by a synthesis of three sine functions. The second surface (322) of the waveguide (320) has a shape of a graph according to a synthesis of a sine function and / or a plurality of sine functions based on the virtual line (401) parallel to the first surface (321) facing the second surface (322), thereby improving the sound quality of audio output from the speaker (310) to the outside of the electronic device (101) through the waveguide (320) and the speaker hole (301).

[0118] For example, since the second surface (322) of the waveguide (320) has a shape of a graph according to a synthesis of a sine function and / or a plurality of sine functions based on an imaginary line (401) parallel to the first surface (321) facing the second surface (322), the internal volume of the waveguide (320) can be changed within a range of about 10%. Instead of arranging a resonator to improve the sound quality of the audio, the waveguide (320) can improve the sound quality of the audio through the changed internal volume within a range of about 10%, thereby increasing the spatial efficiency of the waveguide (320).

[0119] According to one embodiment, the second surface (322) may include at least one valley portion (410) and at least one peak portion (420) connected to the at least one valley portion (410). The at least one valley portion (410) may protrude toward the first surface (321) based on an imaginary line (401). The at least one peak portion (420) may have a curvature.

[0120] For example, at least one of the valleys (410) may be a portion in which the distance (d) from the virtual line (401) of the second surface (322) to the virtual line (401) in mathematical formula 1 has a negative value. For example, at least one of the peaks (420) may be a portion in which the distance (d) from the virtual line (401) of the second surface (322) to the virtual line (401) in mathematical formula 1 has a positive value. For example, at least one of the valleys (410) may be a portion of the second surface (322) that protrudes from the virtual line (401) toward the first surface (321). For example, at least one of the peaks (420) may extend from at least one valley (410). The waveguide (320) can be configured to have a cross-sectional area of ​​the waveguide (320) that varies according to the length (L) of the waveguide (320) by including at least one groove (410) and at least one peak (420). By having the cross-sectional area of ​​the waveguide (320) varied, the sound quality of audio output from the speaker (310) to the outside of the electronic device (101) through the waveguide (320) and the speaker hole (301) can be improved.

[0121] According to one embodiment, at least one groove (410) may include a first groove (411) and a second groove (412) spaced apart from the first groove (411). At least one ridge (420) may include a first ridge (421) having a radius of curvature (r1) within a first reference range, and a second ridge (422) spaced apart from the first ridge (421) by the second groove (412) and having a radius of curvature (r2) within a second reference range smaller than the first reference range. A cross-sectional area of ​​the waveguide (320) may have a minimum value at a position corresponding to the second groove (412).

[0122] For example, the first rib (411) may be a portion of at least one rib (410) adjacent to the speaker (310). The second rib (412) may be a portion of at least one rib (410) adjacent to the speaker hole (301). The second rib (412) may be a portion disposed between the ribs (421, 422). For example, the first rib (421) may be a portion extending from the first rib (411) to the second rib (412). The second rib (422) may be a portion extending from the second rib (412) to the speaker hole (301).

[0123] For example, the vertices (421, 422) may have a positive curvature with respect to the virtual line (401) (or the internal space of the waveguide (320)). Since the first vertices (421) have a radius of curvature (r1) within a first reference range and the second vertices (422) have a radius of curvature (r2) within a second reference range smaller than the first reference range, the shape of the first vertices (421) may be different from the shape of the second vertices (422). For example, when referring to Equation 4 or Equation 5 together, since the synthesis coefficient (M) has a value of 2 or 3, the second surface (322) may have a shape of a graph according to the synthesis of a plurality of sine functions with respect to the virtual line (401). Since the second surface (322) has the shape of the graph according to the synthesis of the plurality of sine functions, the shape of the first peak portion (421) can be different from the shape of the second peak portion (422). Since the shape of the first peak portion (421) is different from the shape of the second peak portion (422), the waveguide (320) can improve the sound quality of audio output from the speaker (310) to the waveguide (320).

[0124] For example, the cross-sectional area of ​​the waveguide (320) cut with respect to the xz plane can be changed by the shape of the second surface (322). The cross-sectional area can have a minimum value at a position corresponding to the second groove (412). The second groove (412) can be referred to as a neck portion of the waveguide (320) in that it is a portion where the cross-sectional area has a minimum value, but is not limited thereto. The waveguide (320) can improve the sound quality of audio output from the speaker (310) to the waveguide (320) by including the second groove (412) where the cross-sectional area of ​​the waveguide (320) is minimum.

[0125] According to one embodiment, the waveguide (320) may include a first region (320a) surrounding the speaker (310) when viewed from above the display (201) (e.g., when viewed in the +z direction), and a second region (320b) extending from the first region (320a) to the speaker hole (301) and at least partially curved. For example, the first region (320a) may be a portion of the waveguide (320) that at least partially covers the speaker (310). For example, the first region (320a) may be a portion from which audio is output from the speaker (310). For example, the first region (320a) may be a region in which the shape of the second surface (322) does not have a shape according to mathematical expression 1. For example, the second region (320b) may be a region that is connected to the first region (320a) and is at least partially curved. For example, the second region (320b) may be a region that surrounds the electronic component (350). For example, the second region (320b) may be a region in which the shape of the second surface (322) changes according to mathematical expression 1. The waveguide (320) may improve the sound quality of audio output from the speaker (310) to the waveguide (320) by including the second region (320b) in which the shape of the second surface (322) changes according to mathematical expression 1.

[0126] According to one embodiment, the electronic device (101) may include a speaker housing (450) that is partially disposed between the waveguide (320) and the speaker (310) and includes at least one through-hole (451) for transmitting audio output from the speaker (310) to the waveguide (320). For example, the speaker housing (450) may surround at least a portion of the speaker (310). For example, the speaker housing (450) may be referred to as a speaker housing in that it reduces damage to the speaker (310) due to external impact. For example, the speaker housing (450) may be at least partially disposed on the diaphragm (311) of the speaker (310). For example, audio output from the speaker (310) may be transmitted to the waveguide (320) through at least one through-hole (451) of the speaker housing (450).

[0127] According to one embodiment, the waveguide (320) may be arranged to be connected to the diaphragm (311) of the speaker (310) for audio output from the speaker (310) within the electronic device (101). For example, one end of the waveguide (310) may be arranged toward the diaphragm (311) of the speaker (310). For example, one end of the waveguide (310) may be arranged in a direction corresponding to the direction in which the diaphragm (311) of the speaker (310) faces. For example, the speaker (310) may be arranged to output audio in a direction toward the display (201) on the waveguide (320) (e.g., +z direction). The speaker hole (301) may extend from the waveguide (320) in a direction in which the waveguide (320) faces the display (201) (e.g., +z direction). For example, the direction in which the diaphragm (311) of the speaker (310) configured to output audio faces may correspond to the direction in which the speaker hole (301) extends from the waveguide (320) to the outside of the electronic device (101). Since the direction in which audio is output from the speaker (310) to the waveguide (320) corresponds to the direction in which the audio is emitted from the waveguide (320) to the outside of the electronic device (101) through the speaker hole (301), the electronic device (101) can provide additional space for the waveguide having a shape according to mathematical expression 1.

[0128] According to one embodiment, the second surface (322) may include a first portion (322a) in which a distance (a) between the first surface (321) and the second surface (322) is constant along the second surface (322), and a second portion (322b) in which a second point (p2) is disposed such that the distance (a) between the first surface (321) and the second surface varies along the second surface (322). The first point (p1) may be located between the first portion (322a) and the second portion (322b). For example, the first portion (322a) may be a portion of the second surface (322) disposed within the first region (320a) of the waveguide (320). For example, the first portion (322a) may be a portion in which the vertical distance (a) from the first surface (321) to the second surface (322) is constant. For example, the first portion (322a) may be a portion that at least partially surrounds the speaker (310). For example, the second portion (322b) may be a portion that is disposed within the second region (320b) of the waveguide (320). For example, the second portion (322b) may be a portion in which the vertical distance (a) from the first surface (321) to the second surface (322) changes along the second surface (322). For example, the second portion (322b) may be a portion that extends from the first portion (322a) to the speaker hole (301). For example, the second portion (322b) may be a portion in which the shape of the second surface (322) changes according to mathematical expression 1. The waveguide (320) may improve the sound quality of audio output from the speaker (310) to the waveguide (320) by including the second portion (322b) in which the distance (a) between the first surface (321) and the second surface changes along the second surface (322).

[0129] According to the above-described embodiment, the electronic device (101) can improve the sound quality of audio output from the speaker (310) by including a waveguide (320) that extends from the speaker (310) to the speaker hole (301) and includes a second surface (322) having a changed shape. The second surface (322) can improve the sound quality of audio by being spaced apart from an imaginary line (401) parallel to the first surface (321) at least partially according to a ratio of a length (L) of the second surface (322) and a distance (x) from a first point (p1) on the second surface (322) to a second point (p2) spaced apart along the second surface (322).

[0130] Figure 5 is a graph showing the sound pressure level according to the shape of the waveguide and the frequency of the sound.

[0131] Referring to FIG. 5, the vertical axis of the graph (500) represents the sound pressure level (SPL) of audio when audio is emitted from a speaker (e.g., speaker (310) of FIG. 3A) of an electronic device (e.g., electronic device (101) of FIG. 1) to the outside of the electronic device (101) through a waveguide (e.g., waveguide (320) of FIG. 3A). The horizontal axis of the graph (500) represents the frequency of the audio output from the speaker (310). The graph (510) represents the sound pressure level of audio output through the waveguide (320) when a second surface (e.g., second surface (322) of FIG. 3A) of the waveguide (320) is formed along the imaginary line (401) of FIGS. 4A and 4B. The graph (520) represents the sound pressure level of audio output through the waveguide (320) when the second surface (322) of the waveguide (320) is spaced apart from the imaginary line (401) according to the ratio of the length (L) of the second surface (322) and the distance (x) from a first point (p1) on the second surface (322) to a second point (p2) spaced along the second surface (322) according to the mathematical expression 1 of FIGS. 4a and 4b.

[0132] Referring to the graph (510), when the second surface (322) is formed along the imaginary line (401) within the audio band between the first frequency (f1) and the second frequency (f2), the sound pressure level of audio output from the speaker (310) through the waveguide (320) may be relatively low. Referring to the graph (520), in the audio band between the first frequency (f1) and the second frequency (f2), when the second surface (322) is spaced apart from the imaginary line (401) according to a ratio of the length (L) of the second surface (322) and the distance (x) from a first point (p1) on the second surface (322) to a second point (p2) spaced along the second surface (322), the sound pressure level of audio output from the speaker (310) through the waveguide (320) may be higher than in the case of the graph (510).

[0133] Referring to the graph (510), in the audio band between the second frequency (f2) and the third frequency (f3), when the second surface (322) is formed along the imaginary line (401), the sound pressure level of audio output from the speaker (310) through the waveguide (320) may be relatively high. Referring to the graph (520), in the audio band between the second frequency (f2) and the third frequency (f3), when the second surface (322) is spaced from the imaginary line (401) according to the ratio of the length (L) of the second surface (322) and the distance (x) from the first point (p1) on the second surface (322) to the second point (p2) spaced along the second surface (322), the sound pressure level of audio output from the speaker (310) through the waveguide (320) may be lower than in the case of the graph (510).

[0134] Referring to graph (510) and graph (520), when the second surface (322) is spaced apart from the virtual line (401) by a ratio of a length (L) of the second surface (322) from the virtual line (401) to a distance (x) from a first point (p1) on the second surface (322) to a second point (p2) spaced apart along the second surface (322), within the audio band between the first frequency (f1) and the third frequency (f3), the sound pressure level of the audio output through the waveguide (320) can be flattened. Through the flattened sound pressure level of the audio, the waveguide (320) can provide the user with improved sound quality of the audio.

[0135] According to the above-described embodiment, the waveguide (320) of the electronic device (101) can provide the user with improved sound quality of the audio by flattening the sound pressure level of the audio.

[0136] According to the above-described embodiment, a portable communication device (e.g., an electronic device (101) of FIG. 1) may include a housing (e.g., a housing (210) of FIG. 2A) including a speaker hole (e.g., a speaker hole (301) of FIG. 3A), and a speaker (e.g., a speaker (310) of FIG. 3A) within the housing configured to output audio. The portable communication device may include a waveguide (e.g., a waveguide (320) of FIG. 3A) extending from the speaker to the speaker hole to transmit the audio to the outside of the portable communication device. The waveguide may include a first surface (e.g., a first surface (321) of FIG. 3A) and a second surface (e.g., a second surface (322) of FIG. 3A) facing the first surface and spaced apart from the first surface. The second surface may be spaced apart, at least partially, from an imaginary line parallel to the first surface (e.g., imaginary line (401) in FIG. 4A) according to a ratio of a length of the second surface (e.g., L in FIG. 4A) and a distance from a first point on the second surface (e.g., the first point (p1) in FIG. 4A) to a second point (e.g., the second point (p2) in FIG. 4A) spaced apart along the second surface. According to the above-mentioned embodiment, the portable communication device may provide a path for the audio by including the waveguide. The second surface of the waveguide may be spaced apart from the imaginary line at least partially according to a ratio of the length of the second surface and the distance between the first point and the second point, thereby improving the sound quality of the audio. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0137] According to one embodiment, the distance at which the second surface is spaced from the virtual line according to the ratio can be determined by the following mathematical formula:

[0138] d represents the distance that the second surface is spaced from the virtual line, Cm represents an amplitude constant, M represents a composite coefficient, and R represents the ratio of the length of the second surface and the distance from the first point on the second surface to the second point spaced along the second surface. According to the above-mentioned embodiment, the second surface of the waveguide can improve the sound quality of the audio by being spaced from the virtual line at least partially according to the ratio of the length of the second surface and the distance between the first point and the second point. The above-mentioned embodiment can have various effects including the above-mentioned effects.

[0139] According to one embodiment, the synthesis coefficient may have a range of 1 or more and 3 or less. According to the above-mentioned embodiment, the second side of the waveguide may be spaced apart from the virtual line at least partially according to a ratio of the length of the second side and the distance between the first point and the second point, thereby improving the sound quality of the audio. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0140] According to one embodiment, the waveguide may further include a third surface extending from the first surface to the second surface (e.g., the third surface (323) of FIG. 3A), and a fourth surface facing the third surface and spaced apart from the third surface (e.g., the fourth surface (324) of FIG. 3B). The fourth surface may be parallel to the third surface. According to the above-mentioned embodiment, the waveguide may provide additional space for electronic components within the portable communication device by including the third surface and the fourth surface. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0141] According to one embodiment, the third surface may include at least one step portion (e.g., at least one step portion (330) of FIG. 3A). According to the above-mentioned embodiment, the third surface may improve the sound quality of the audio by including the at least one step portion. The above-mentioned embodiment may have various effects, including the effects mentioned above.

[0142] According to one embodiment, the first surface may include a first bending portion that is bent (e.g., the first bending portion (321a) of FIG. 4A). The virtual line may include a second bending portion (e.g., the second bending portion (401a) of FIG. 4A) that faces the first bending portion and corresponds to the first bending portion. According to the above-mentioned embodiment, the second surface of the waveguide may be spaced apart from the virtual line at least partially according to a ratio of the length of the second surface and the distance between the first point and the second point, thereby improving the sound quality of the audio. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0143] According to one embodiment, the second surface may include a valley portion (e.g., the second valley portion (412) of FIG. 4A) protruding toward the first surface based on the virtual line, and at least one peak portion (e.g., at least one peak portion (420) of FIG. 4A) extending from the valley portion and having a curvature. According to the above-mentioned embodiment, the waveguide may improve the sound quality of the audio by including the valley portion and the at least one peak portion. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0144] According to one embodiment, the at least one peak portion may include a first peak portion (e.g., the first peak portion (421) of FIG. 4A) having a radius of curvature within a first reference range (e.g., r1 of FIG. 4B), and a second peak portion (e.g., the second peak portion (422) of FIG. 4A) spaced apart from the first peak portion by the valley portion and having a radius of curvature within a second reference range smaller than the first reference range (e.g., r2 of FIG. 4B). A cross-sectional area of ​​the waveguide may have a minimum value at a position corresponding to the valley portion. According to the above-mentioned embodiment, the waveguide may improve the sound quality of the audio by including the first peak portion and the second peak portion. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0145] According to one embodiment, the portable communication device may further include a display (e.g., display (201) of FIG. 2A) coupled to the housing. The speaker may include a diaphragm (e.g., diaphragm (311) of FIG. 3A) configured to output the audio toward the display. According to the above-mentioned embodiment, the speaker may provide a variety of user experiences to the user by including the diaphragm. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0146] According to one embodiment, the waveguide may further include a first region (e.g., the first region (320a) of FIG. 4A) surrounding the speaker when the display is viewed from above, and a second region (e.g., the second region (320b) of FIG. 4A) extending from the first region to the speaker hole and at least partially curved. According to the above-mentioned embodiment, the waveguide may improve the sound quality of the audio by including the second region that is at least partially curved. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0147] According to one embodiment, the second surface may include a first portion (e.g., the first portion (322a) of FIG. 4A) in which the distance between the first surface and the second surface (e.g., a of FIG. 4A) is constant along the second surface, and a second portion (e.g., the second portion (322b) of FIG. 4A) in which the distance between the first surface and the second surface varies along the second surface by disposing the second point. According to the above-mentioned embodiment, the second surface may improve the sound quality of the audio by including the second portion in which the distance between the first surface and the second surface varies along the second surface. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0148] In one embodiment, the first point may be located between the first portion and the second portion. In the above-mentioned embodiment, the second side of the waveguide may be spaced apart from the imaginary line at least partially in proportion to the length of the second side and the distance between the first point and the second point, thereby improving the sound quality of the audio. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0149] According to one embodiment, the direction in which the audio is output from the speaker to the waveguide may correspond to the direction in which the audio is emitted from the waveguide to the outside of the portable communication device through the speaker hole. According to the above-mentioned embodiment, the direction in which the audio is output from the speaker to the waveguide may correspond to the direction in which the audio is emitted from the waveguide to the outside of the portable communication device through the speaker hole, so that the portable communication device may provide additional space for the waveguide. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0150] According to one embodiment, the portable communication device may further include a frame (e.g., a speaker housing (450) of FIG. 4A) partially disposed between the waveguide and the speaker and including at least one through-hole for transmitting the audio output from the speaker to the waveguide. According to the above-mentioned embodiment, the portable communication device may reduce damage to the speaker due to external impact by including the frame. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0151] According to one embodiment, the portable communication device may further include a camera (e.g., the first camera (205) of FIG. 2A, the electronic component (350) of FIG. 3A) at least partially surrounded by the waveguide. According to the aforementioned embodiment, the waveguide may at least partially surround the camera, thereby providing additional space within the portable communication device for the camera. The aforementioned embodiment may have various effects, including the effects mentioned above.

[0152] In one embodiment, a portable communication device may include a housing including a speaker hole, a display coupled to the housing, and a speaker within the housing configured to output audio toward the display. The portable communication device may include a waveguide extending from the speaker to the speaker hole to transmit the audio to an exterior of the portable communication device. The waveguide may include a first surface and a second surface facing the first surface and spaced apart from the first surface. The speaker hole may be formed along the display. The second surface may be spaced, at least partially, from an imaginary line parallel to the first surface according to a ratio of a length of the second surface and a distance from a first point on the second surface to a second point spaced apart along the second surface. In the aforementioned embodiment, the portable communication device may provide a path for the audio by including the waveguide. The second side of the waveguide may be spaced from the imaginary line at least partially in proportion to the length of the second side and the distance between the first point and the second point, thereby improving the sound quality of the audio. The above-mentioned embodiment may have various effects, including the above-mentioned effects.

[0153] According to one embodiment, the distance at which the second surface is spaced from the virtual line according to the ratio can be determined by the following mathematical formula:

[0154] d represents the distance that the second surface is spaced from the virtual line, Cm represents an amplitude constant, M represents a synthesis coefficient, and R represents the ratio of the length of the second surface and the distance from the first point on the second surface to the second point spaced along the second surface. According to the above-mentioned embodiment, the second surface of the waveguide can improve the sound quality of the audio by being spaced from the virtual line at least partially according to the ratio of the length of the second surface and the distance between the first point and the second point. The above-mentioned embodiment can have various effects including the above-mentioned effect.

[0155] According to one embodiment, the synthesis coefficient may have a range of 1 or more and 3 or less. According to the above-mentioned embodiment, the second side of the waveguide may be spaced apart from the virtual line at least partially according to a ratio of the length of the second side and the distance between the first point and the second point, thereby improving the sound quality of the audio. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0156] According to one embodiment, the second surface may include a groove portion protruding toward the first surface based on the virtual line, and at least one peak portion extending from the groove portion and having a curvature. According to the above-mentioned embodiment, the waveguide may improve the sound quality of the audio by including the groove portion and the at least one peak portion. The above-mentioned embodiment may have various effects including the above-mentioned effects.

[0157] According to one embodiment, the second surface may include a first portion, in which the distance between the first surface and the second surface is constant along the second surface, and a second portion, in which the second point is arranged such that the distance between the first surface and the second surface varies along the second surface. According to the above-mentioned embodiment, the second surface may improve the sound quality of the audio by including the second portion, in which the distance between the first surface and the second surface varies along the second surface. The above-mentioned embodiment may have various effects, including the above-mentioned effects.

[0158] Electronic devices according to the various embodiments disclosed in this document 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, electronic devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0159] The various embodiments of this document and the terminology used therein 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 of the 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.

[0160] The term "module" used in various embodiments 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 such 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).

[0161] Various embodiments 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.

[0162] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. The computer program product may be traded as a commodity 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.

[0163] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, 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 the integration. According to various embodiments, 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.

Claims

1. In a portable communication device (101), A housing (210) including a speaker hole (301); A display (201) coupled to the housing (210) and extending in a second direction perpendicular to the first direction in which the speaker hole (301) extends; A speaker (310) within the housing (210) configured to output audio toward the display (201); and In order to transmit the above audio to the outside of the portable communication device (101), a waveguide (320) extending from the speaker (310) to the speaker hole (301) is included; The above waveguide (320) is a first surface (321) that is at least partially bent; and A second surface (322) facing the first surface (321) and spaced apart from the first surface (321); The above speaker hole (301) is It is formed along the edge of the display (201) and is configured to emit the audio transmitted in the second direction through the first surface (321) and the second surface (322) toward the outside in the first direction, The above second side (322) is, At least partially, spaced apart from an imaginary line (401) parallel to the first surface (321), according to a ratio of the length of the second surface (322) and the distance from a first point (p1) on the second surface (322) to a second point (p2) spaced along the second surface (322), Portable communication device (101).

2. In paragraph 1, According to the above ratio, the distance that the second surface (322) is separated from the above virtual line (401) is, Determined by the mathematical formula below, Portable communication device (101): d represents the distance that the second surface (322) is spaced from the virtual line (401), Cm represents an amplitude constant, M represents a composite coefficient, and R represents the ratio of the length (L) of the second surface (322) and the distance (x) from the first point (p1) on the second surface (322) to the second point (p2) spaced along the second surface (322).

3. In paragraph 2, The above synthesis coefficient is, Having a range of 1 to 3, Portable communication device (101).

4. In any one of paragraphs 1 to 3, The above waveguide (320) is A third surface (323) extending from the first surface (321) to the second surface (322); and Further comprising a fourth surface (324) facing the third surface (323) and spaced apart from the third surface (323); The above fourth side (324) is, Parallel to the third surface (323) above, Portable communication device (101).

5. In paragraph 4, The third side (323) above is, comprising at least one step portion (330), Portable communication device (101).

6. In any one of paragraphs 1 to 5, The above first side (321) is, Including a first bending portion (321a) that is bent; The above virtual line (401) is A second bending portion (401a) facing the first bending portion (321a) and corresponding to the first bending portion (321a); Portable communication device (101).

7. In any one of paragraphs 1 to 6, The above second side (322) is, Based on the above virtual line (401), a valley portion (412) protruding toward the first surface (321); and At least one peak portion (420) extending from the above-mentioned bone portion (412) and having a curvature; Portable communication device (101).

8. In paragraph 7, At least one of the above floor portions (420) is A first floor portion (421) having a radius of curvature (r1) within a first reference range; and A second floor portion (422) separated from the first floor portion (421) by the above-mentioned bone portion (412) and having a radius of curvature (r2) within a second reference range smaller than the first reference range; The cross-sectional area of ​​the above waveguide (320) is Having a minimum value at a position corresponding to the above bone (412), Portable communication device (101).

9. In any one of paragraphs 1 to 8, Further comprising a display (201) coupled to the housing (210); The above speaker (310) including a diaphragm (311) configured to output the audio toward the display (201); Portable communication device (101).

10. In paragraph 9, The above waveguide (320) is When looking at the above display (201) from above, a first area (320a) surrounding the speaker (310); and Further comprising a second region (320b) extending from the first region (320a) to the speaker hole (301) and at least partially curved; Portable communication device (101).

11. In any one of paragraphs 1 to 10, The above second side (322) is, A first portion (322a) in which the distance (a) between the first surface (321) and the second surface (322) is constant along the second surface (322); and A second portion (322b) including the second point (p2) arranged such that the distance (a) between the first surface (321) and the second surface (322) varies along the second surface (322); Portable communication device (101).

12. In paragraph 11, The above first point (p1) is, Located between the first part (322a) and the second part (322b), Portable communication device (101).

13. In any one of paragraphs 1 to 12, The direction in which the audio is output from the speaker (310) to the waveguide (320) is Corresponding to the first direction in which the audio is emitted from the waveguide (320) to the outside of the portable communication device (101) through the speaker hole (301), Portable communication device (101).

14. In any one of paragraphs 1 to 13, A speaker housing (450) partially disposed between the waveguide (320) and the speaker (310) and including at least one through hole (451) for transmitting the audio output from the speaker (310) to the waveguide (320); Portable communication device (101).

15. In any one of paragraphs 1 to 14, Further comprising an electronic component (350) at least partially surrounded by the waveguide (320); Portable communication device (101).

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